Datasets:

jcarbonnell

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structTuningNEAR

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near_abomonation_derive

.github ISSUE_TEMPLATE BOUNTY.yml .travis.yml Cargo.toml src lib.rs tests test.rs

Learn-NEAR_NCD--near-idea

.eslintrc.js .gitpod.yml README.md contract README.md as-pect.config.js asconfig.json assembly __tests__ as-pect.d.ts main.spec.ts as_types.d.ts index.ts model.ts tsconfig.json compile.js neardev dev-account.env package-lock.json package.json package.json postcss.config.js src __mocks__ fileMock.js assets idea.svg logo-black.svg logo-white.svg config.ts global.css helper index.ts index.css index.html jest.init.js main.test.js react-app-env.d.ts utils.ts wallet login index.html tailwind.config.js tsconfig.json

near-idea Smart Contract ================== A [smart contract] written in [AssemblyScript] for an app initialized with [create-near-app] Quick Start =========== Before you compile this code, you will need to install [Node.js] ≥ 12 Exploring The Code ================== 1. The main smart contract code lives in `assembly/index.ts`. You can compile it with the `./compile` script. 2. Tests: You can run smart contract tests with the `./test` script. This runs standard AssemblyScript tests using [as-pect]. [smart contract]: https://docs.near.org/docs/develop/contracts/overview [AssemblyScript]: https://www.assemblyscript.org/ [create-near-app]: https://github.com/near/create-near-app [Node.js]: https://nodejs.org/en/download/package-manager/ [as-pect]: https://www.npmjs.com/package/@as-pect/cli near-idea ================== This app was initialized with [create-near-app] Quick Start =========== To run this project locally: 1. Prerequisites: Make sure you've installed [Node.js] ≥ 12 2. Install dependencies: `yarn install` 3. Run the local development server: `yarn dev` (see `package.json` for a full list of `scripts` you can run with `yarn`) Now you'll have a local development environment backed by the NEAR TestNet! Go ahead and play with the app and the code. As you make code changes, the app will automatically reload. Exploring The Code ================== 1. The "backend" code lives in the `/contract` folder. See the README there for more info. 2. The frontend code lives in the `/src` folder. `/src/index.html` is a great place to start exploring. Note that it loads in `/src/index.js`, where you can learn how the frontend connects to the NEAR blockchain. 3. Tests: there are different kinds of tests for the frontend and the smart contract. See `contract/README` for info about how it's tested. The frontend code gets tested with [jest]. You can run both of these at once with `yarn run test`. Deploy ====== Every smart contract in NEAR has its [own associated account][NEAR accounts]. When you run `yarn dev`, your smart contract gets deployed to the live NEAR TestNet with a throwaway account. When you're ready to make it permanent, here's how. Step 0: Install near-cli (optional) ------------------------------------- [near-cli] is a command line interface (CLI) for interacting with the NEAR blockchain. It was installed to the local `node_modules` folder when you ran `yarn install`, but for best ergonomics you may want to install it globally: yarn install --global near-cli Or, if you'd rather use the locally-installed version, you can prefix all `near` commands with `npx` Ensure that it's installed with `near --version` (or `npx near --version`) Step 1: Create an account for the contract ------------------------------------------ Each account on NEAR can have at most one contract deployed to it. If you've already created an account such as `your-name.testnet`, you can deploy your contract to `near-idea.your-name.testnet`. Assuming you've already created an account on [NEAR Wallet], here's how to create `near-idea.your-name.testnet`: 1. Authorize NEAR CLI, following the commands it gives you: near login 2. Create a subaccount (replace `YOUR-NAME` below with your actual account name): near create-account near-idea.YOUR-NAME.testnet --masterAccount YOUR-NAME.testnet Step 2: set contract name in code --------------------------------- Modify the line in `src/config.js` that sets the account name of the contract. Set it to the account id you used above. const CONTRACT_NAME = process.env.CONTRACT_NAME || 'near-idea.YOUR-NAME.testnet' Step 3: deploy! --------------- One command: yarn deploy As you can see in `package.json`, this does two things: 1. builds & deploys smart contract to NEAR TestNet 2. builds & deploys frontend code to GitHub using [gh-pages]. This will only work if the project already has a repository set up on GitHub. Feel free to modify the `deploy` script in `package.json` to deploy elsewhere. Troubleshooting =============== On Windows, if you're seeing an error containing `EPERM` it may be related to spaces in your path. Please see [this issue](https://github.com/zkat/npx/issues/209) for more details. [create-near-app]: https://github.com/near/create-near-app [Node.js]: https://nodejs.org/en/download/package-manager/ [jest]: https://jestjs.io/ [NEAR accounts]: https://docs.near.org/docs/concepts/account [NEAR Wallet]: https://wallet.testnet.near.org/ [near-cli]: https://github.com/near/near-cli [gh-pages]: https://github.com/tschaub/gh-pages

lamtran8401_ts-contract

.gitpod.yml README.md contract README.md babel.config.json build.sh build builder.c code.h contract.js methods.h deploy.sh neardev dev-account.env package.json src contract.ts token.ts type.ts tsconfig.json frontend .parcel-cache c515a02e28e10b32.txt App.js assets global.css logo-black.svg logo-white.svg dist index.bc0daea6.css index.html logo-black.4514ed42.svg logo-white.a7716062.svg index.html index.js near-wallet.js package.json start.sh ui-components.js integration-tests package.json src main.ava.ts package.json

near-blank-project ================== This app was initialized with [create-near-app] Quick Start =========== If you haven't installed dependencies during setup: npm install Build and deploy your contract to TestNet with a temporary dev account: npm run deploy Test your contract: npm test If you have a frontend, run `npm start`. This will run a dev server. Exploring The Code ================== 1. The smart-contract code lives in the `/contract` folder. See the README there for more info. In blockchain apps the smart contract is the "backend" of your app. 2. The frontend code lives in the `/frontend` folder. `/frontend/index.html` is a great place to start exploring. Note that it loads in `/frontend/index.js`, this is your entrypoint to learn how the frontend connects to the NEAR blockchain. 3. Test your contract: `npm test`, this will run the tests in `integration-tests` directory. Deploy ====== Every smart contract in NEAR has its [own associated account][NEAR accounts]. When you run `npm run deploy`, your smart contract gets deployed to the live NEAR TestNet with a temporary dev account. When you're ready to make it permanent, here's how: Step 0: Install near-cli (optional) ------------------------------------- [near-cli] is a command line interface (CLI) for interacting with the NEAR blockchain. It was installed to the local `node_modules` folder when you ran `npm install`, but for best ergonomics you may want to install it globally: npm install --global near-cli Or, if you'd rather use the locally-installed version, you can prefix all `near` commands with `npx` Ensure that it's installed with `near --version` (or `npx near --version`) Step 1: Create an account for the contract ------------------------------------------ Each account on NEAR can have at most one contract deployed to it. If you've already created an account such as `your-name.testnet`, you can deploy your contract to `near-blank-project.your-name.testnet`. Assuming you've already created an account on [NEAR Wallet], here's how to create `near-blank-project.your-name.testnet`: 1. Authorize NEAR CLI, following the commands it gives you: near login 2. Create a subaccount (replace `YOUR-NAME` below with your actual account name): near create-account near-blank-project.YOUR-NAME.testnet --masterAccount YOUR-NAME.testnet Step 2: deploy the contract --------------------------- Use the CLI to deploy the contract to TestNet with your account ID. Replace `PATH_TO_WASM_FILE` with the `wasm` that was generated in `contract` build directory. near deploy --accountId near-blank-project.YOUR-NAME.testnet --wasmFile PATH_TO_WASM_FILE Step 3: set contract name in your frontend code ----------------------------------------------- Modify the line in `src/config.js` that sets the account name of the contract. Set it to the account id you used above. const CONTRACT_NAME = process.env.CONTRACT_NAME || 'near-blank-project.YOUR-NAME.testnet' Troubleshooting =============== On Windows, if you're seeing an error containing `EPERM` it may be related to spaces in your path. Please see [this issue](https://github.com/zkat/npx/issues/209) for more details. [create-near-app]: https://github.com/near/create-near-app [Node.js]: https://nodejs.org/en/download/package-manager/ [jest]: https://jestjs.io/ [NEAR accounts]: https://docs.near.org/concepts/basics/account [NEAR Wallet]: https://wallet.testnet.near.org/ [near-cli]: https://github.com/near/near-cli [gh-pages]: https://github.com/tschaub/gh-pages # Hello NEAR Contract The smart contract exposes two methods to enable storing and retrieving a greeting in the NEAR network. ```ts @NearBindgen({}) class HelloNear { greeting: string = "Hello"; @view // This method is read-only and can be called for free get_greeting(): string { return this.greeting; } @call // This method changes the state, for which it cost gas set_greeting({ greeting }: { greeting: string }): void { // Record a log permanently to the blockchain! near.log(`Saving greeting ${greeting}`); this.greeting = greeting; } } ``` <br /> # Quickstart 1. Make sure you have installed [node.js](https://nodejs.org/en/download/package-manager/) >= 16. 2. Install the [`NEAR CLI`](https://github.com/near/near-cli#setup) <br /> ## 1. Build and Deploy the Contract You can automatically compile and deploy the contract in the NEAR testnet by running: ```bash npm run deploy ``` Once finished, check the `neardev/dev-account` file to find the address in which the contract was deployed: ```bash cat ./neardev/dev-account # e.g. dev-1659899566943-21539992274727 ``` <br /> ## 2. Retrieve the Greeting `get_greeting` is a read-only method (aka `view` method). `View` methods can be called for **free** by anyone, even people **without a NEAR account**! ```bash # Use near-cli to get the greeting near view <dev-account> get_greeting ``` <br /> ## 3. Store a New Greeting `set_greeting` changes the contract's state, for which it is a `call` method. `Call` methods can only be invoked using a NEAR account, since the account needs to pay GAS for the transaction. ```bash # Use near-cli to set a new greeting near call <dev-account> set_greeting '{"greeting":"howdy"}' --accountId <dev-account> ``` **Tip:** If you would like to call `set_greeting` using your own account, first login into NEAR using: ```bash # Use near-cli to login your NEAR account near login ``` and then use the logged account to sign the transaction: `--accountId <your-account>`.

NearDeFi_wrapped-ft

Cargo.toml README.md build.sh src lib.rs

## Example with wNEAR on testnet * `$CONTRACT_ID` - the account ID of the new token fNEAR * `$OWNER_ID` - the account ID of the controller/owner. * `wrap.testnet` - the token ID that is being wrapped/locked. wNEAR is used for the example. * `$ACCOUNT_ID` - the account ID of a test account. #### Init ```bash near call $CONTRACT_ID --accountId=$OWNER_ID new '{ "locked_token_account_id": "wrap.testnet", "meta": {"spec": "ft-1.0.0", "name": "Future NEAR", "symbol": "fNEAR", "decimals": 24}, "owner_id": "'$OWNER_ID'" }' ``` #### Wrap 20 NEAR into wNEAR (optional) ```bash near call wrap.testnet --accountId=$OWNER_ID storage_deposit '' --amount=0.00125 near call wrap.testnet --accountId=$OWNER_ID near_deposit --amount=20 ``` #### Storage deposit ```bash near call wrap.testnet --accountId=$OWNER_ID storage_deposit '{"account_id": "'$CONTRACT_ID'"}' --amount=0.00125 ``` #### Lock 10 wNEAR into fNEAR ```bash near call wrap.testnet --accountId=$OWNER_ID --depositYocto=1 --gas=100000000000000 ft_transfer_call '{ "receiver_id": "'$CONTRACT_ID'", "amount": "10000000000000000000000000", "msg": "" }' ``` #### View methods ```bash near view $CONTRACT_ID get_info near view $CONTRACT_ID ft_metadata near view $CONTRACT_ID ft_total_supply near view $CONTRACT_ID ft_balance_of '{"account_id": "'$OWNER_ID'"}' ``` #### Storage for the new account ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID storage_deposit '' --amount=0.00125 ``` #### Transfer 1 fNEAR from the owner ```bash near call $CONTRACT_ID --accountId=$OWNER_ID --depositYocto=1 ft_transfer '{ "receiver_id": "'$ACCOUNT_ID'", "amount": "1000000000000000000000000" }' ``` #### Check balance ```bash near view $CONTRACT_ID ft_balance_of '{"account_id": "'$OWNER_ID'"}' near view $CONTRACT_ID ft_balance_of '{"account_id": "'$ACCOUNT_ID'"}' ``` #### Attempt to transfer back (should fail, because not whitelisted) ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --depositYocto=1 ft_transfer '{ "receiver_id": "'$OWNER_ID'", "amount": "1000000000000000000000000" }' ``` Expected error: ``` 'Not whitelisted for transfers' ``` #### Attempt to unwrap (should fail, still locked) ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --depositYocto=1 --gas=100000000000000 unwrap '' ``` Expected error: ``` 'The token is still locked' ``` #### Whitelist transfers for the account ```bash near call $CONTRACT_ID --accountId=$OWNER_ID --depositYocto=1 add_transfer_whitelist '{ "account_id": "'$ACCOUNT_ID'" }' ``` #### Transfer of 0.1 by the account to the owner ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --depositYocto=1 ft_transfer '{ "receiver_id": "'$OWNER_ID'", "amount": "100000000000000000000000" }' ``` #### Unlock the unwrapping by the owner ```bash near call $CONTRACT_ID --accountId=$OWNER_ID --depositYocto=1 unlock '' ``` #### Attempt to unwrap the token (should fail, no wNEAR storage) ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --depositYocto=1 --gas=100000000000000 unwrap '' ``` Expected error: ``` 'The account is not registered' ``` #### Verify balances didn't change ```bash near view $CONTRACT_ID ft_balance_of '{"account_id": "'$OWNER_ID'"}' near view $CONTRACT_ID ft_balance_of '{"account_id": "'$ACCOUNT_ID'"}' ``` #### Storage deposit for wNEAR ```bash near call wrap.testnet --accountId=$ACCOUNT_ID storage_deposit '' --amount=0.00125 ``` #### Unwrap the token ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --depositYocto=1 --gas=100000000000000 unwrap '' ``` #### Verify balances of the account for fNEAR and wNEAR ```bash near view $CONTRACT_ID ft_balance_of '{"account_id": "'$ACCOUNT_ID'"}' near view wrap.testnet ft_balance_of '{"account_id": "'$ACCOUNT_ID'"}' ```

liamvwood_zero-to-hero_near

Cargo.toml README.md build.bat build.sh src lib.rs test.sh

# Rust Smart Contract Template ## Getting started To get started with this template: 1. Click the "Use this template" button to create a new repo based on this template 2. Update line 2 of `Cargo.toml` with your project name 3. Update line 4 of `Cargo.toml` with your project author names 4. Set up the [prerequisites](https://github.com/near/near-sdk-rs#pre-requisites) 5. Begin writing your smart contract in `src/lib.rs` 6. Test the contract `cargo test -- --nocapture` 8. Build the contract `RUSTFLAGS='-C link-arg=-s' cargo build --target wasm32-unknown-unknown --release` **Get more info at:** * [Rust Smart Contract Quick Start](https://docs.near.org/docs/develop/contracts/rust/intro) * [Rust SDK Book](https://www.near-sdk.io/)

Learn-NEAR-Hispano_NCD4L1-OpinionTrust

1.dapp.init.sh README.md as-pect.config.js asconfig.json assembly __tests__ as-pect.d.ts index.spec.ts as_types.d.ts index.ts models Category.ts Comment.ts Opinion.ts Product.ts User.ts tsconfig.json index.js neardev dev-account.env node_modules .bin sha.js @as-covers assembly CONTRIBUTING.md README.md index.ts package.json tsconfig.json core CONTRIBUTING.md README.md package.json glue README.md lib index.d.ts index.js package.json transform README.md lib index.d.ts index.js util.d.ts util.js package.json @as-pect assembly README.md assembly index.ts internal Actual.ts Expectation.ts Expected.ts Reflect.ts ReflectedValueType.ts Test.ts assert.ts call.ts comparison toIncludeComparison.ts toIncludeEqualComparison.ts log.ts noOp.ts package.json types as-pect.d.ts as-pect.portable.d.ts env.d.ts cli README.md init as-pect.config.js env.d.ts example.spec.ts init-types.d.ts portable-types.d.ts lib as-pect.cli.amd.d.ts as-pect.cli.amd.js help.d.ts help.js index.d.ts index.js init.d.ts init.js portable.d.ts portable.js run.d.ts run.js test.d.ts test.js types.d.ts types.js util CommandLineArg.d.ts CommandLineArg.js IConfiguration.d.ts IConfiguration.js asciiArt.d.ts asciiArt.js collectReporter.d.ts collectReporter.js getTestEntryFiles.d.ts getTestEntryFiles.js removeFile.d.ts removeFile.js strings.d.ts strings.js writeFile.d.ts writeFile.js worklets ICommand.d.ts ICommand.js compiler.d.ts compiler.js package.json core README.md lib as-pect.core.amd.d.ts as-pect.core.amd.js index.d.ts index.js reporter CombinationReporter.d.ts CombinationReporter.js EmptyReporter.d.ts EmptyReporter.js IReporter.d.ts IReporter.js SummaryReporter.d.ts SummaryReporter.js VerboseReporter.d.ts VerboseReporter.js test IWarning.d.ts IWarning.js TestContext.d.ts TestContext.js TestNode.d.ts TestNode.js transform assemblyscript.d.ts assemblyscript.js createAddReflectedValueKeyValuePairsMember.d.ts createAddReflectedValueKeyValuePairsMember.js createGenericTypeParameter.d.ts 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grammar.js package.json src Snapshot.ts SnapshotDiff.ts SnapshotDiffResult.ts index.ts parser grammar.ts tsconfig.json @assemblyscript loader README.md index.d.ts index.js package.json umd index.d.ts index.js package.json @babel code-frame README.md lib index.js package.json helper-validator-identifier README.md lib identifier.js index.js keyword.js package.json scripts generate-identifier-regex.js highlight README.md lib index.js node_modules ansi-styles index.js package.json readme.md chalk index.js package.json readme.md templates.js types index.d.ts color-convert CHANGELOG.md README.md conversions.js index.js package.json route.js color-name .eslintrc.json README.md index.js package.json test.js escape-string-regexp index.js package.json readme.md has-flag index.js package.json readme.md supports-color browser.js index.js package.json readme.md package.json @eslint eslintrc CHANGELOG.md README.md conf config-schema.js environments.js eslint-all.js eslint-recommended.js lib cascading-config-array-factory.js config-array-factory.js config-array config-array.js config-dependency.js extracted-config.js ignore-pattern.js index.js override-tester.js flat-compat.js index.js shared ajv.js config-ops.js config-validator.js deprecation-warnings.js naming.js relative-module-resolver.js types.js node_modules ajv .tonic_example.js README.md dist ajv.bundle.js ajv.min.js lib ajv.d.ts ajv.js cache.js compile async.js equal.js error_classes.js formats.js index.js resolve.js rules.js schema_obj.js ucs2length.js util.js data.js definition_schema.js dotjs README.md _limit.js _limitItems.js _limitLength.js _limitProperties.js allOf.js anyOf.js comment.js const.js contains.js custom.js dependencies.js enum.js format.js if.js index.js items.js multipleOf.js not.js oneOf.js pattern.js properties.js propertyNames.js ref.js required.js uniqueItems.js validate.js keyword.js refs data.json json-schema-draft-04.json json-schema-draft-06.json json-schema-draft-07.json 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README.md lib-es TransportU2F.js lib TransportU2F.js node_modules @ledgerhq devices README.md lib-es ble receiveAPDU.js sendAPDU.js hid-framing.js index.js scrambling.js lib ble receiveAPDU.js sendAPDU.js hid-framing.js index.js scrambling.js package.json src ble receiveAPDU.js sendAPDU.js hid-framing.js index.js scrambling.js errors README.md dist helpers.d.ts index.cjs.js index.d.ts index.js package.json src helpers.ts index.ts hw-transport README.md lib-es Transport.js lib Transport.js package.json src Transport.js logs README.md lib-es index.js lib index.js package.json src index.js package.json src TransportU2F.js hw-transport-webhid README.md flow webhid.js lib-es TransportWebHID.js lib TransportWebHID.js node_modules @ledgerhq devices README.md lib-es ble receiveAPDU.js sendAPDU.js hid-framing.js index.js scrambling.js lib ble receiveAPDU.js sendAPDU.js hid-framing.js index.js scrambling.js package.json src ble receiveAPDU.js sendAPDU.js hid-framing.js index.js scrambling.js 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[![NPM version][npm-image]][npm-url] [![build status][travis-image]][travis-url] [![Test coverage][coveralls-image]][coveralls-url] [![Downloads][downloads-image]][downloads-url] [](https://gitter.im/eslint/doctrine?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) # Doctrine Doctrine is a [JSDoc](http://usejsdoc.org) parser that parses documentation comments from JavaScript (you need to pass in the comment, not a whole JavaScript file). ## Installation You can install Doctrine using [npm](https://npmjs.com): ``` $ npm install doctrine --save-dev ``` Doctrine can also be used in web browsers using [Browserify](http://browserify.org). ## Usage Require doctrine inside of your JavaScript: ```js var doctrine = require("doctrine"); ``` ### parse() The primary method is `parse()`, which accepts two arguments: the JSDoc comment to parse and an optional options object. The available options are: * `unwrap` - set to `true` to delete the leading `/**`, any `*` that begins a line, and the trailing `*/` from the source text. Default: `false`. * `tags` - an array of tags to return. When specified, Doctrine returns only tags in this array. For example, if `tags` is `["param"]`, then only `@param` tags will be returned. Default: `null`. * `recoverable` - set to `true` to keep parsing even when syntax errors occur. Default: `false`. * `sloppy` - set to `true` to allow optional parameters to be specified in brackets (`@param {string} [foo]`). Default: `false`. * `lineNumbers` - set to `true` to add `lineNumber` to each node, specifying the line on which the node is found in the source. Default: `false`. * `range` - set to `true` to add `range` to each node, specifying the start and end index of the node in the original comment. Default: `false`. Here's a simple example: ```js var ast = doctrine.parse( [ "/**", " * This function comment is parsed by doctrine", " * @param {{ok:String}} userName", "*/" ].join('\n'), { unwrap: true }); ``` This example returns the following AST: { "description": "This function comment is parsed by doctrine", "tags": [ { "title": "param", "description": null, "type": { "type": "RecordType", "fields": [ { "type": "FieldType", "key": "ok", "value": { "type": "NameExpression", "name": "String" } } ] }, "name": "userName" } ] } See the [demo page](http://eslint.org/doctrine/demo/) more detail. ## Team These folks keep the project moving and are resources for help: * Nicholas C. Zakas ([@nzakas](https://github.com/nzakas)) - project lead * Yusuke Suzuki ([@constellation](https://github.com/constellation)) - reviewer ## Contributing Issues and pull requests will be triaged and responded to as quickly as possible. We operate under the [ESLint Contributor Guidelines](http://eslint.org/docs/developer-guide/contributing), so please be sure to read them before contributing. If you're not sure where to dig in, check out the [issues](https://github.com/eslint/doctrine/issues). ## Frequently Asked Questions ### Can I pass a whole JavaScript file to Doctrine? No. Doctrine can only parse JSDoc comments, so you'll need to pass just the JSDoc comment to Doctrine in order to work. ### License #### doctrine Copyright JS Foundation and other contributors, https://js.foundation Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. #### esprima some of functions is derived from esprima Copyright (C) 2012, 2011 [Ariya Hidayat](http://ariya.ofilabs.com/about) (twitter: [@ariyahidayat](http://twitter.com/ariyahidayat)) and other contributors. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #### closure-compiler some of extensions is derived from closure-compiler Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ ### Where to ask for help? Join our [Chatroom](https://gitter.im/eslint/doctrine) [npm-image]: https://img.shields.io/npm/v/doctrine.svg?style=flat-square [npm-url]: https://www.npmjs.com/package/doctrine [travis-image]: https://img.shields.io/travis/eslint/doctrine/master.svg?style=flat-square [travis-url]: https://travis-ci.org/eslint/doctrine [coveralls-image]: https://img.shields.io/coveralls/eslint/doctrine/master.svg?style=flat-square [coveralls-url]: https://coveralls.io/r/eslint/doctrine?branch=master [downloads-image]: http://img.shields.io/npm/dm/doctrine.svg?style=flat-square [downloads-url]: https://www.npmjs.com/package/doctrine # braces [](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W8YFZ425KND68) [](https://www.npmjs.com/package/braces) [](https://npmjs.org/package/braces) [](https://npmjs.org/package/braces) [](https://travis-ci.org/micromatch/braces) > Bash-like brace expansion, implemented in JavaScript. Safer than other brace expansion libs, with complete support for the Bash 4.3 braces specification, without sacrificing speed. Please consider following this project's author, [Jon Schlinkert](https://github.com/jonschlinkert), and consider starring the project to show your :heart: and support. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save braces ``` ## v3.0.0 Released!! See the [changelog](CHANGELOG.md) for details. ## Why use braces? Brace patterns make globs more powerful by adding the ability to match specific ranges and sequences of characters. * **Accurate** - complete support for the [Bash 4.3 Brace Expansion](www.gnu.org/software/bash/) specification (passes all of the Bash braces tests) * **[fast and performant](#benchmarks)** - Starts fast, runs fast and [scales well](#performance) as patterns increase in complexity. * **Organized code base** - The parser and compiler are easy to maintain and update when edge cases crop up. * **Well-tested** - Thousands of test assertions, and passes all of the Bash, minimatch, and [brace-expansion](https://github.com/juliangruber/brace-expansion) unit tests (as of the date this was written). * **Safer** - You shouldn't have to worry about users defining aggressive or malicious brace patterns that can break your application. Braces takes measures to prevent malicious regex that can be used for DDoS attacks (see [catastrophic backtracking](https://www.regular-expressions.info/catastrophic.html)). * [Supports lists](#lists) - (aka "sets") `a/{b,c}/d` => `['a/b/d', 'a/c/d']` * [Supports sequences](#sequences) - (aka "ranges") `{01..03}` => `['01', '02', '03']` * [Supports steps](#steps) - (aka "increments") `{2..10..2}` => `['2', '4', '6', '8', '10']` * [Supports escaping](#escaping) - To prevent evaluation of special characters. ## Usage The main export is a function that takes one or more brace `patterns` and `options`. ```js const braces = require('braces'); // braces(patterns[, options]); console.log(braces(['{01..05}', '{a..e}'])); //=> ['(0[1-5])', '([a-e])'] console.log(braces(['{01..05}', '{a..e}'], { expand: true })); //=> ['01', '02', '03', '04', '05', 'a', 'b', 'c', 'd', 'e'] ``` ### Brace Expansion vs. Compilation By default, brace patterns are compiled into strings that are optimized for creating regular expressions and matching. **Compiled** ```js console.log(braces('a/{x,y,z}/b')); //=> ['a/(x|y|z)/b'] console.log(braces(['a/{01..20}/b', 'a/{1..5}/b'])); //=> [ 'a/(0[1-9]|1[0-9]|20)/b', 'a/([1-5])/b' ] ``` **Expanded** Enable brace expansion by setting the `expand` option to true, or by using [braces.expand()](#expand) (returns an array similar to what you'd expect from Bash, or `echo {1..5}`, or [minimatch](https://github.com/isaacs/minimatch)): ```js console.log(braces('a/{x,y,z}/b', { expand: true })); //=> ['a/x/b', 'a/y/b', 'a/z/b'] console.log(braces.expand('{01..10}')); //=> ['01','02','03','04','05','06','07','08','09','10'] ``` ### Lists Expand lists (like Bash "sets"): ```js console.log(braces('a/{foo,bar,baz}/*.js')); //=> ['a/(foo|bar|baz)/*.js'] console.log(braces.expand('a/{foo,bar,baz}/*.js')); //=> ['a/foo/*.js', 'a/bar/*.js', 'a/baz/*.js'] ``` ### Sequences Expand ranges of characters (like Bash "sequences"): ```js console.log(braces.expand('{1..3}')); // ['1', '2', '3'] console.log(braces.expand('a/{1..3}/b')); // ['a/1/b', 'a/2/b', 'a/3/b'] console.log(braces('{a..c}', { expand: true })); // ['a', 'b', 'c'] console.log(braces('foo/{a..c}', { expand: true })); // ['foo/a', 'foo/b', 'foo/c'] // supports zero-padded ranges console.log(braces('a/{01..03}/b')); //=> ['a/(0[1-3])/b'] console.log(braces('a/{001..300}/b')); //=> ['a/(0{2}[1-9]|0[1-9][0-9]|[12][0-9]{2}|300)/b'] ``` See [fill-range](https://github.com/jonschlinkert/fill-range) for all available range-expansion options. ### Steppped ranges Steps, or increments, may be used with ranges: ```js console.log(braces.expand('{2..10..2}')); //=> ['2', '4', '6', '8', '10'] console.log(braces('{2..10..2}')); //=> ['(2|4|6|8|10)'] ``` When the [.optimize](#optimize) method is used, or [options.optimize](#optionsoptimize) is set to true, sequences are passed to [to-regex-range](https://github.com/jonschlinkert/to-regex-range) for expansion. ### Nesting Brace patterns may be nested. The results of each expanded string are not sorted, and left to right order is preserved. **"Expanded" braces** ```js console.log(braces.expand('a{b,c,/{x,y}}/e')); //=> ['ab/e', 'ac/e', 'a/x/e', 'a/y/e'] console.log(braces.expand('a/{x,{1..5},y}/c')); //=> ['a/x/c', 'a/1/c', 'a/2/c', 'a/3/c', 'a/4/c', 'a/5/c', 'a/y/c'] ``` **"Optimized" braces** ```js console.log(braces('a{b,c,/{x,y}}/e')); //=> ['a(b|c|/(x|y))/e'] console.log(braces('a/{x,{1..5},y}/c')); //=> ['a/(x|([1-5])|y)/c'] ``` ### Escaping **Escaping braces** A brace pattern will not be expanded or evaluted if _either the opening or closing brace is escaped_: ```js console.log(braces.expand('a\\{d,c,b}e')); //=> ['a{d,c,b}e'] console.log(braces.expand('a{d,c,b\\}e')); //=> ['a{d,c,b}e'] ``` **Escaping commas** Commas inside braces may also be escaped: ```js console.log(braces.expand('a{b\\,c}d')); //=> ['a{b,c}d'] console.log(braces.expand('a{d\\,c,b}e')); //=> ['ad,ce', 'abe'] ``` **Single items** Following bash conventions, a brace pattern is also not expanded when it contains a single character: ```js console.log(braces.expand('a{b}c')); //=> ['a{b}c'] ``` ## Options ### options.maxLength **Type**: `Number` **Default**: `65,536` **Description**: Limit the length of the input string. Useful when the input string is generated or your application allows users to pass a string, et cetera. ```js console.log(braces('a/{b,c}/d', { maxLength: 3 })); //=> throws an error ``` ### options.expand **Type**: `Boolean` **Default**: `undefined` **Description**: Generate an "expanded" brace pattern (alternatively you can use the `braces.expand()` method, which does the same thing). ```js console.log(braces('a/{b,c}/d', { expand: true })); //=> [ 'a/b/d', 'a/c/d' ] ``` ### options.nodupes **Type**: `Boolean` **Default**: `undefined` **Description**: Remove duplicates from the returned array. ### options.rangeLimit **Type**: `Number` **Default**: `1000` **Description**: To prevent malicious patterns from being passed by users, an error is thrown when `braces.expand()` is used or `options.expand` is true and the generated range will exceed the `rangeLimit`. You can customize `options.rangeLimit` or set it to `Inifinity` to disable this altogether. **Examples** ```js // pattern exceeds the "rangeLimit", so it's optimized automatically console.log(braces.expand('{1..1000}')); //=> ['([1-9]|[1-9][0-9]{1,2}|1000)'] // pattern does not exceed "rangeLimit", so it's NOT optimized console.log(braces.expand('{1..100}')); //=> ['1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12', '13', '14', '15', '16', '17', '18', '19', '20', '21', '22', '23', '24', '25', '26', '27', '28', '29', '30', '31', '32', '33', '34', '35', '36', '37', '38', '39', '40', '41', '42', '43', '44', '45', '46', '47', '48', '49', '50', '51', '52', '53', '54', '55', '56', '57', '58', '59', '60', '61', '62', '63', '64', '65', '66', '67', '68', '69', '70', '71', '72', '73', '74', '75', '76', '77', '78', '79', '80', '81', '82', '83', '84', '85', '86', '87', '88', '89', '90', '91', '92', '93', '94', '95', '96', '97', '98', '99', '100'] ``` ### options.transform **Type**: `Function` **Default**: `undefined` **Description**: Customize range expansion. **Example: Transforming non-numeric values** ```js const alpha = braces.expand('x/{a..e}/y', { transform(value, index) { // When non-numeric values are passed, "value" is a character code. return 'foo/' + String.fromCharCode(value) + '-' + index; } }); console.log(alpha); //=> [ 'x/foo/a-0/y', 'x/foo/b-1/y', 'x/foo/c-2/y', 'x/foo/d-3/y', 'x/foo/e-4/y' ] ``` **Example: Transforming numeric values** ```js const numeric = braces.expand('{1..5}', { transform(value) { // when numeric values are passed, "value" is a number return 'foo/' + value * 2; } }); console.log(numeric); //=> [ 'foo/2', 'foo/4', 'foo/6', 'foo/8', 'foo/10' ] ``` ### options.quantifiers **Type**: `Boolean` **Default**: `undefined` **Description**: In regular expressions, quanitifiers can be used to specify how many times a token can be repeated. For example, `a{1,3}` will match the letter `a` one to three times. Unfortunately, regex quantifiers happen to share the same syntax as [Bash lists](#lists) The `quantifiers` option tells braces to detect when [regex quantifiers](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp#quantifiers) are defined in the given pattern, and not to try to expand them as lists. **Examples** ```js const braces = require('braces'); console.log(braces('a/b{1,3}/{x,y,z}')); //=> [ 'a/b(1|3)/(x|y|z)' ] console.log(braces('a/b{1,3}/{x,y,z}', {quantifiers: true})); //=> [ 'a/b{1,3}/(x|y|z)' ] console.log(braces('a/b{1,3}/{x,y,z}', {quantifiers: true, expand: true})); //=> [ 'a/b{1,3}/x', 'a/b{1,3}/y', 'a/b{1,3}/z' ] ``` ### options.unescape **Type**: `Boolean` **Default**: `undefined` **Description**: Strip backslashes that were used for escaping from the result. ## What is "brace expansion"? Brace expansion is a type of parameter expansion that was made popular by unix shells for generating lists of strings, as well as regex-like matching when used alongside wildcards (globs). In addition to "expansion", braces are also used for matching. In other words: * [brace expansion](#brace-expansion) is for generating new lists * [brace matching](#brace-matching) is for filtering existing lists <details> <summary><strong>More about brace expansion</strong> (click to expand)</summary> There are two main types of brace expansion: 1. **lists**: which are defined using comma-separated values inside curly braces: `{a,b,c}` 2. **sequences**: which are defined using a starting value and an ending value, separated by two dots: `a{1..3}b`. Optionally, a third argument may be passed to define a "step" or increment to use: `a{1..100..10}b`. These are also sometimes referred to as "ranges". Here are some example brace patterns to illustrate how they work: **Sets** ``` {a,b,c} => a b c {a,b,c}{1,2} => a1 a2 b1 b2 c1 c2 ``` **Sequences** ``` {1..9} => 1 2 3 4 5 6 7 8 9 {4..-4} => 4 3 2 1 0 -1 -2 -3 -4 {1..20..3} => 1 4 7 10 13 16 19 {a..j} => a b c d e f g h i j {j..a} => j i h g f e d c b a {a..z..3} => a d g j m p s v y ``` **Combination** Sets and sequences can be mixed together or used along with any other strings. ``` {a,b,c}{1..3} => a1 a2 a3 b1 b2 b3 c1 c2 c3 foo/{a,b,c}/bar => foo/a/bar foo/b/bar foo/c/bar ``` The fact that braces can be "expanded" from relatively simple patterns makes them ideal for quickly generating test fixtures, file paths, and similar use cases. ## Brace matching In addition to _expansion_, brace patterns are also useful for performing regular-expression-like matching. For example, the pattern `foo/{1..3}/bar` would match any of following strings: ``` foo/1/bar foo/2/bar foo/3/bar ``` But not: ``` baz/1/qux baz/2/qux baz/3/qux ``` Braces can also be combined with [glob patterns](https://github.com/jonschlinkert/micromatch) to perform more advanced wildcard matching. For example, the pattern `*/{1..3}/*` would match any of following strings: ``` foo/1/bar foo/2/bar foo/3/bar baz/1/qux baz/2/qux baz/3/qux ``` ## Brace matching pitfalls Although brace patterns offer a user-friendly way of matching ranges or sets of strings, there are also some major disadvantages and potential risks you should be aware of. ### tldr **"brace bombs"** * brace expansion can eat up a huge amount of processing resources * as brace patterns increase _linearly in size_, the system resources required to expand the pattern increase exponentially * users can accidentally (or intentially) exhaust your system's resources resulting in the equivalent of a DoS attack (bonus: no programming knowledge is required!) For a more detailed explanation with examples, see the [geometric complexity](#geometric-complexity) section. ### The solution Jump to the [performance section](#performance) to see how Braces solves this problem in comparison to other libraries. ### Geometric complexity At minimum, brace patterns with sets limited to two elements have quadradic or `O(n^2)` complexity. But the complexity of the algorithm increases exponentially as the number of sets, _and elements per set_, increases, which is `O(n^c)`. For example, the following sets demonstrate quadratic (`O(n^2)`) complexity: ``` {1,2}{3,4} => (2X2) => 13 14 23 24 {1,2}{3,4}{5,6} => (2X2X2) => 135 136 145 146 235 236 245 246 ``` But add an element to a set, and we get a n-fold Cartesian product with `O(n^c)` complexity: ``` {1,2,3}{4,5,6}{7,8,9} => (3X3X3) => 147 148 149 157 158 159 167 168 169 247 248 249 257 258 259 267 268 269 347 348 349 357 358 359 367 368 369 ``` Now, imagine how this complexity grows given that each element is a n-tuple: ``` {1..100}{1..100} => (100X100) => 10,000 elements (38.4 kB) {1..100}{1..100}{1..100} => (100X100X100) => 1,000,000 elements (5.76 MB) ``` Although these examples are clearly contrived, they demonstrate how brace patterns can quickly grow out of control. **More information** Interested in learning more about brace expansion? * [linuxjournal/bash-brace-expansion](http://www.linuxjournal.com/content/bash-brace-expansion) * [rosettacode/Brace_expansion](https://rosettacode.org/wiki/Brace_expansion) * [cartesian product](https://en.wikipedia.org/wiki/Cartesian_product) </details> ## Performance Braces is not only screaming fast, it's also more accurate the other brace expansion libraries. ### Better algorithms Fortunately there is a solution to the ["brace bomb" problem](#brace-matching-pitfalls): _don't expand brace patterns into an array when they're used for matching_. Instead, convert the pattern into an optimized regular expression. This is easier said than done, and braces is the only library that does this currently. **The proof is in the numbers** Minimatch gets exponentially slower as patterns increase in complexity, braces does not. The following results were generated using `braces()` and `minimatch.braceExpand()`, respectively. | **Pattern** | **braces** | **[minimatch][]** | | --- | --- | --- | | `{1..9007199254740991}`[^1] | `298 B` (5ms 459μs)| N/A (freezes) | | `{1..1000000000000000}` | `41 B` (1ms 15μs) | N/A (freezes) | | `{1..100000000000000}` | `40 B` (890μs) | N/A (freezes) | | `{1..10000000000000}` | `39 B` (2ms 49μs) | N/A (freezes) | | `{1..1000000000000}` | `38 B` (608μs) | N/A (freezes) | | `{1..100000000000}` | `37 B` (397μs) | N/A (freezes) | | `{1..10000000000}` | `35 B` (983μs) | N/A (freezes) | | `{1..1000000000}` | `34 B` (798μs) | N/A (freezes) | | `{1..100000000}` | `33 B` (733μs) | N/A (freezes) | | `{1..10000000}` | `32 B` (5ms 632μs) | `78.89 MB` (16s 388ms 569μs) | | `{1..1000000}` | `31 B` (1ms 381μs) | `6.89 MB` (1s 496ms 887μs) | | `{1..100000}` | `30 B` (950μs) | `588.89 kB` (146ms 921μs) | | `{1..10000}` | `29 B` (1ms 114μs) | `48.89 kB` (14ms 187μs) | | `{1..1000}` | `28 B` (760μs) | `3.89 kB` (1ms 453μs) | | `{1..100}` | `22 B` (345μs) | `291 B` (196μs) | | `{1..10}` | `10 B` (533μs) | `20 B` (37μs) | | `{1..3}` | `7 B` (190μs) | `5 B` (27μs) | ### Faster algorithms When you need expansion, braces is still much faster. _(the following results were generated using `braces.expand()` and `minimatch.braceExpand()`, respectively)_ | **Pattern** | **braces** | **[minimatch][]** | | --- | --- | --- | | `{1..10000000}` | `78.89 MB` (2s 698ms 642μs) | `78.89 MB` (18s 601ms 974μs) | | `{1..1000000}` | `6.89 MB` (458ms 576μs) | `6.89 MB` (1s 491ms 621μs) | | `{1..100000}` | `588.89 kB` (20ms 728μs) | `588.89 kB` (156ms 919μs) | | `{1..10000}` | `48.89 kB` (2ms 202μs) | `48.89 kB` (13ms 641μs) | | `{1..1000}` | `3.89 kB` (1ms 796μs) | `3.89 kB` (1ms 958μs) | | `{1..100}` | `291 B` (424μs) | `291 B` (211μs) | | `{1..10}` | `20 B` (487μs) | `20 B` (72μs) | | `{1..3}` | `5 B` (166μs) | `5 B` (27μs) | If you'd like to run these comparisons yourself, see [test/support/generate.js](test/support/generate.js). ## Benchmarks ### Running benchmarks Install dev dependencies: ```bash npm i -d && npm benchmark ``` ### Latest results Braces is more accurate, without sacrificing performance. ```bash # range (expanded) braces x 29,040 ops/sec ±3.69% (91 runs sampled)) minimatch x 4,735 ops/sec ±1.28% (90 runs sampled) # range (optimized for regex) braces x 382,878 ops/sec ±0.56% (94 runs sampled) minimatch x 1,040 ops/sec ±0.44% (93 runs sampled) # nested ranges (expanded) braces x 19,744 ops/sec ±2.27% (92 runs sampled)) minimatch x 4,579 ops/sec ±0.50% (93 runs sampled) # nested ranges (optimized for regex) braces x 246,019 ops/sec ±2.02% (93 runs sampled) minimatch x 1,028 ops/sec ±0.39% (94 runs sampled) # set (expanded) braces x 138,641 ops/sec ±0.53% (95 runs sampled) minimatch x 219,582 ops/sec ±0.98% (94 runs sampled) # set (optimized for regex) braces x 388,408 ops/sec ±0.41% (95 runs sampled) minimatch x 44,724 ops/sec ±0.91% (89 runs sampled) # nested sets (expanded) braces x 84,966 ops/sec ±0.48% (94 runs sampled) minimatch x 140,720 ops/sec ±0.37% (95 runs sampled) # nested sets (optimized for regex) braces x 263,340 ops/sec ±2.06% (92 runs sampled) minimatch x 28,714 ops/sec ±0.40% (90 runs sampled) ``` ## About <details> <summary><strong>Contributing</strong></summary> Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). </details> <details> <summary><strong>Running Tests</strong></summary> Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` </details> <details> <summary><strong>Building docs</strong></summary> _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` </details> ### Contributors | **Commits** | **Contributor** | | --- | --- | | 197 | [jonschlinkert](https://github.com/jonschlinkert) | | 4 | [doowb](https://github.com/doowb) | | 1 | [es128](https://github.com/es128) | | 1 | [eush77](https://github.com/eush77) | | 1 | [hemanth](https://github.com/hemanth) | | 1 | [wtgtybhertgeghgtwtg](https://github.com/wtgtybhertgeghgtwtg) | ### Author **Jon Schlinkert** * [GitHub Profile](https://github.com/jonschlinkert) * [Twitter Profile](https://twitter.com/jonschlinkert) * [LinkedIn Profile](https://linkedin.com/in/jonschlinkert) ### License Copyright © 2019, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT License](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.8.0, on April 08, 2019._ <table><thead> <tr> <th>Linux</th> <th>OS X</th> <th>Windows</th> <th>Coverage</th> <th>Downloads</th> </tr> </thead><tbody><tr> <td colspan="2" align="center"> <a href="https://travis-ci.org/kaelzhang/node-ignore"> <img src="https://travis-ci.org/kaelzhang/node-ignore.svg?branch=master" alt="Build Status" /></a> </td> <td align="center"> <a href="https://ci.appveyor.com/project/kaelzhang/node-ignore"> <img src="https://ci.appveyor.com/api/projects/status/github/kaelzhang/node-ignore?branch=master&svg=true" alt="Windows Build Status" /></a> </td> <td align="center"> <a href="https://codecov.io/gh/kaelzhang/node-ignore"> <img src="https://codecov.io/gh/kaelzhang/node-ignore/branch/master/graph/badge.svg" alt="Coverage Status" /></a> </td> <td align="center"> <a href="https://www.npmjs.org/package/ignore"> <img src="http://img.shields.io/npm/dm/ignore.svg" alt="npm module downloads per month" /></a> </td> </tr></tbody></table> # ignore `ignore` is a manager, filter and parser which implemented in pure JavaScript according to the .gitignore [spec](http://git-scm.com/docs/gitignore). Pay attention that [`minimatch`](https://www.npmjs.org/package/minimatch) does not work in the gitignore way. To filter filenames according to .gitignore file, I recommend this module. ##### Tested on - Linux + Node: `0.8` - `7.x` - Windows + Node: `0.10` - `7.x`, node < `0.10` is not tested due to the lack of support of appveyor. Actually, `ignore` does not rely on any versions of node specially. Since `4.0.0`, ignore will no longer support `node < 6` by default, to use in node < 6, `require('ignore/legacy')`. For details, see [CHANGELOG](https://github.com/kaelzhang/node-ignore/blob/master/CHANGELOG.md). ## Table Of Main Contents - [Usage](#usage) - [`Pathname` Conventions](#pathname-conventions) - [Guide for 2.x -> 3.x](#upgrade-2x---3x) - [Guide for 3.x -> 4.x](#upgrade-3x---4x) - See Also: - [`glob-gitignore`](https://www.npmjs.com/package/glob-gitignore) matches files using patterns and filters them according to gitignore rules. ## Usage ```js import ignore from 'ignore' const ig = ignore().add(['.abc/*', '!.abc/d/']) ``` ### Filter the given paths ```js const paths = [ '.abc/a.js', // filtered out '.abc/d/e.js' // included ] ig.filter(paths) // ['.abc/d/e.js'] ig.ignores('.abc/a.js') // true ``` ### As the filter function ```js paths.filter(ig.createFilter()); // ['.abc/d/e.js'] ``` ### Win32 paths will be handled ```js ig.filter(['.abc\\a.js', '.abc\\d\\e.js']) // if the code above runs on windows, the result will be // ['.abc\\d\\e.js'] ``` ## Why another ignore? - `ignore` is a standalone module, and is much simpler so that it could easy work with other programs, unlike [isaacs](https://npmjs.org/~isaacs)'s [fstream-ignore](https://npmjs.org/package/fstream-ignore) which must work with the modules of the fstream family. - `ignore` only contains utility methods to filter paths according to the specified ignore rules, so - `ignore` never try to find out ignore rules by traversing directories or fetching from git configurations. - `ignore` don't cares about sub-modules of git projects. - Exactly according to [gitignore man page](http://git-scm.com/docs/gitignore), fixes some known matching issues of fstream-ignore, such as: - '`/*.js`' should only match '`a.js`', but not '`abc/a.js`'. - '`**/foo`' should match '`foo`' anywhere. - Prevent re-including a file if a parent directory of that file is excluded. - Handle trailing whitespaces: - `'a '`(one space) should not match `'a '`(two spaces). - `'a \ '` matches `'a '` - All test cases are verified with the result of `git check-ignore`. # Methods ## .add(pattern: string | Ignore): this ## .add(patterns: Array<string | Ignore>): this - **pattern** `String | Ignore` An ignore pattern string, or the `Ignore` instance - **patterns** `Array<String | Ignore>` Array of ignore patterns. Adds a rule or several rules to the current manager. Returns `this` Notice that a line starting with `'#'`(hash) is treated as a comment. Put a backslash (`'\'`) in front of the first hash for patterns that begin with a hash, if you want to ignore a file with a hash at the beginning of the filename. ```js ignore().add('#abc').ignores('#abc') // false ignore().add('\#abc').ignores('#abc') // true ``` `pattern` could either be a line of ignore pattern or a string of multiple ignore patterns, which means we could just `ignore().add()` the content of a ignore file: ```js ignore() .add(fs.readFileSync(filenameOfGitignore).toString()) .filter(filenames) ``` `pattern` could also be an `ignore` instance, so that we could easily inherit the rules of another `Ignore` instance. ## <strike>.addIgnoreFile(path)</strike> REMOVED in `3.x` for now. To upgrade `ignore@2.x` up to `3.x`, use ```js import fs from 'fs' if (fs.existsSync(filename)) { ignore().add(fs.readFileSync(filename).toString()) } ``` instead. ## .filter(paths: Array<Pathname>): Array<Pathname> ```ts type Pathname = string ``` Filters the given array of pathnames, and returns the filtered array. - **paths** `Array.<Pathname>` The array of `pathname`s to be filtered. ### `Pathname` Conventions: #### 1. `Pathname` should be a `path.relative()`d pathname `Pathname` should be a string that have been `path.join()`ed, or the return value of `path.relative()` to the current directory. ```js // WRONG ig.ignores('./abc') // WRONG, for it will never happen. // If the gitignore rule locates at the root directory, // `'/abc'` should be changed to `'abc'`. // ``` // path.relative('/', '/abc') -> 'abc' // ``` ig.ignores('/abc') // Right ig.ignores('abc') // Right ig.ignores(path.join('./abc')) // path.join('./abc') -> 'abc' ``` In other words, each `Pathname` here should be a relative path to the directory of the gitignore rules. Suppose the dir structure is: ``` /path/to/your/repo |-- a | |-- a.js | |-- .b | |-- .c |-- .DS_store ``` Then the `paths` might be like this: ```js [ 'a/a.js' '.b', '.c/.DS_store' ] ``` Usually, you could use [`glob`](http://npmjs.org/package/glob) with `option.mark = true` to fetch the structure of the current directory: ```js import glob from 'glob' glob('**', { // Adds a / character to directory matches. mark: true }, (err, files) => { if (err) { return console.error(err) } let filtered = ignore().add(patterns).filter(files) console.log(filtered) }) ``` #### 2. filenames and dirnames `node-ignore` does NO `fs.stat` during path matching, so for the example below: ```js ig.add('config/') // `ig` does NOT know if 'config' is a normal file, directory or something ig.ignores('config') // And it returns `false` ig.ignores('config/') // returns `true` ``` Specially for people who develop some library based on `node-ignore`, it is important to understand that. ## .ignores(pathname: Pathname): boolean > new in 3.2.0 Returns `Boolean` whether `pathname` should be ignored. ```js ig.ignores('.abc/a.js') // true ``` ## .createFilter() Creates a filter function which could filter an array of paths with `Array.prototype.filter`. Returns `function(path)` the filter function. ## `options.ignorecase` since 4.0.0 Similar as the `core.ignorecase` option of [git-config](https://git-scm.com/docs/git-config), `node-ignore` will be case insensitive if `options.ignorecase` is set to `true` (default value), otherwise case sensitive. ```js const ig = ignore({ ignorecase: false }) ig.add('*.png') ig.ignores('*.PNG') // false ``` **** # Upgrade Guide ## Upgrade 2.x -> 3.x - All `options` of 2.x are unnecessary and removed, so just remove them. - `ignore()` instance is no longer an [`EventEmitter`](nodejs.org/api/events.html), and all events are unnecessary and removed. - `.addIgnoreFile()` is removed, see the [.addIgnoreFile](#addignorefilepath) section for details. ## Upgrade 3.x -> 4.x Since `4.0.0`, `ignore` will no longer support node < 6, to use `ignore` in node < 6: ```js var ignore = require('ignore/legacy') ``` **** # Collaborators - [@whitecolor](https://github.com/whitecolor) *Alex* - [@SamyPesse](https://github.com/SamyPesse) *Samy Pessé* - [@azproduction](https://github.com/azproduction) *Mikhail Davydov* - [@TrySound](https://github.com/TrySound) *Bogdan Chadkin* - [@JanMattner](https://github.com/JanMattner) *Jan Mattner* - [@ntwb](https://github.com/ntwb) *Stephen Edgar* - [@kasperisager](https://github.com/kasperisager) *Kasper Isager* - [@sandersn](https://github.com/sandersn) *Nathan Shively-Sanders* # Glob Match files using the patterns the shell uses, like stars and stuff. [](https://travis-ci.org/isaacs/node-glob/) [](https://ci.appveyor.com/project/isaacs/node-glob) [](https://coveralls.io/github/isaacs/node-glob?branch=master) This is a glob implementation in JavaScript. It uses the `minimatch` library to do its matching.  ## Usage Install with npm ``` npm i glob ``` ```javascript var glob = require("glob") // options is optional glob("**/*.js", options, function (er, files) { // files is an array of filenames. // If the `nonull` option is set, and nothing // was found, then files is ["**/*.js"] // er is an error object or null. }) ``` ## Glob Primer "Globs" are the patterns you type when you do stuff like `ls *.js` on the command line, or put `build/*` in a `.gitignore` file. Before parsing the path part patterns, braced sections are expanded into a set. Braced sections start with `{` and end with `}`, with any number of comma-delimited sections within. Braced sections may contain slash characters, so `a{/b/c,bcd}` would expand into `a/b/c` and `abcd`. The following characters have special magic meaning when used in a path portion: * `*` Matches 0 or more characters in a single path portion * `?` Matches 1 character * `[...]` Matches a range of characters, similar to a RegExp range. If the first character of the range is `!` or `^` then it matches any character not in the range. * `!(pattern|pattern|pattern)` Matches anything that does not match any of the patterns provided. * `?(pattern|pattern|pattern)` Matches zero or one occurrence of the patterns provided. * `+(pattern|pattern|pattern)` Matches one or more occurrences of the patterns provided. * `*(a|b|c)` Matches zero or more occurrences of the patterns provided * `@(pattern|pat*|pat?erN)` Matches exactly one of the patterns provided * `**` If a "globstar" is alone in a path portion, then it matches zero or more directories and subdirectories searching for matches. It does not crawl symlinked directories. ### Dots If a file or directory path portion has a `.` as the first character, then it will not match any glob pattern unless that pattern's corresponding path part also has a `.` as its first character. For example, the pattern `a/.*/c` would match the file at `a/.b/c`. However the pattern `a/*/c` would not, because `*` does not start with a dot character. You can make glob treat dots as normal characters by setting `dot:true` in the options. ### Basename Matching If you set `matchBase:true` in the options, and the pattern has no slashes in it, then it will seek for any file anywhere in the tree with a matching basename. For example, `*.js` would match `test/simple/basic.js`. ### Empty Sets If no matching files are found, then an empty array is returned. This differs from the shell, where the pattern itself is returned. For example: $ echo a*s*d*f a*s*d*f To get the bash-style behavior, set the `nonull:true` in the options. ### See Also: * `man sh` * `man bash` (Search for "Pattern Matching") * `man 3 fnmatch` * `man 5 gitignore` * [minimatch documentation](https://github.com/isaacs/minimatch) ## glob.hasMagic(pattern, [options]) Returns `true` if there are any special characters in the pattern, and `false` otherwise. Note that the options affect the results. If `noext:true` is set in the options object, then `+(a|b)` will not be considered a magic pattern. If the pattern has a brace expansion, like `a/{b/c,x/y}` then that is considered magical, unless `nobrace:true` is set in the options. ## glob(pattern, [options], cb) * `pattern` `{String}` Pattern to be matched * `options` `{Object}` * `cb` `{Function}` * `err` `{Error | null}` * `matches` `{Array<String>}` filenames found matching the pattern Perform an asynchronous glob search. ## glob.sync(pattern, [options]) * `pattern` `{String}` Pattern to be matched * `options` `{Object}` * return: `{Array<String>}` filenames found matching the pattern Perform a synchronous glob search. ## Class: glob.Glob Create a Glob object by instantiating the `glob.Glob` class. ```javascript var Glob = require("glob").Glob var mg = new Glob(pattern, options, cb) ``` It's an EventEmitter, and starts walking the filesystem to find matches immediately. ### new glob.Glob(pattern, [options], [cb]) * `pattern` `{String}` pattern to search for * `options` `{Object}` * `cb` `{Function}` Called when an error occurs, or matches are found * `err` `{Error | null}` * `matches` `{Array<String>}` filenames found matching the pattern Note that if the `sync` flag is set in the options, then matches will be immediately available on the `g.found` member. ### Properties * `minimatch` The minimatch object that the glob uses. * `options` The options object passed in. * `aborted` Boolean which is set to true when calling `abort()`. There is no way at this time to continue a glob search after aborting, but you can re-use the statCache to avoid having to duplicate syscalls. * `cache` Convenience object. Each field has the following possible values: * `false` - Path does not exist * `true` - Path exists * `'FILE'` - Path exists, and is not a directory * `'DIR'` - Path exists, and is a directory * `[file, entries, ...]` - Path exists, is a directory, and the array value is the results of `fs.readdir` * `statCache` Cache of `fs.stat` results, to prevent statting the same path multiple times. * `symlinks` A record of which paths are symbolic links, which is relevant in resolving `**` patterns. * `realpathCache` An optional object which is passed to `fs.realpath` to minimize unnecessary syscalls. It is stored on the instantiated Glob object, and may be re-used. ### Events * `end` When the matching is finished, this is emitted with all the matches found. If the `nonull` option is set, and no match was found, then the `matches` list contains the original pattern. The matches are sorted, unless the `nosort` flag is set. * `match` Every time a match is found, this is emitted with the specific thing that matched. It is not deduplicated or resolved to a realpath. * `error` Emitted when an unexpected error is encountered, or whenever any fs error occurs if `options.strict` is set. * `abort` When `abort()` is called, this event is raised. ### Methods * `pause` Temporarily stop the search * `resume` Resume the search * `abort` Stop the search forever ### Options All the options that can be passed to Minimatch can also be passed to Glob to change pattern matching behavior. Also, some have been added, or have glob-specific ramifications. All options are false by default, unless otherwise noted. All options are added to the Glob object, as well. If you are running many `glob` operations, you can pass a Glob object as the `options` argument to a subsequent operation to shortcut some `stat` and `readdir` calls. At the very least, you may pass in shared `symlinks`, `statCache`, `realpathCache`, and `cache` options, so that parallel glob operations will be sped up by sharing information about the filesystem. * `cwd` The current working directory in which to search. Defaults to `process.cwd()`. * `root` The place where patterns starting with `/` will be mounted onto. Defaults to `path.resolve(options.cwd, "/")` (`/` on Unix systems, and `C:\` or some such on Windows.) * `dot` Include `.dot` files in normal matches and `globstar` matches. Note that an explicit dot in a portion of the pattern will always match dot files. * `nomount` By default, a pattern starting with a forward-slash will be "mounted" onto the root setting, so that a valid filesystem path is returned. Set this flag to disable that behavior. * `mark` Add a `/` character to directory matches. Note that this requires additional stat calls. * `nosort` Don't sort the results. * `stat` Set to true to stat *all* results. This reduces performance somewhat, and is completely unnecessary, unless `readdir` is presumed to be an untrustworthy indicator of file existence. * `silent` When an unusual error is encountered when attempting to read a directory, a warning will be printed to stderr. Set the `silent` option to true to suppress these warnings. * `strict` When an unusual error is encountered when attempting to read a directory, the process will just continue on in search of other matches. Set the `strict` option to raise an error in these cases. * `cache` See `cache` property above. Pass in a previously generated cache object to save some fs calls. * `statCache` A cache of results of filesystem information, to prevent unnecessary stat calls. While it should not normally be necessary to set this, you may pass the statCache from one glob() call to the options object of another, if you know that the filesystem will not change between calls. (See "Race Conditions" below.) * `symlinks` A cache of known symbolic links. You may pass in a previously generated `symlinks` object to save `lstat` calls when resolving `**` matches. * `sync` DEPRECATED: use `glob.sync(pattern, opts)` instead. * `nounique` In some cases, brace-expanded patterns can result in the same file showing up multiple times in the result set. By default, this implementation prevents duplicates in the result set. Set this flag to disable that behavior. * `nonull` Set to never return an empty set, instead returning a set containing the pattern itself. This is the default in glob(3). * `debug` Set to enable debug logging in minimatch and glob. * `nobrace` Do not expand `{a,b}` and `{1..3}` brace sets. * `noglobstar` Do not match `**` against multiple filenames. (Ie, treat it as a normal `*` instead.) * `noext` Do not match `+(a|b)` "extglob" patterns. * `nocase` Perform a case-insensitive match. Note: on case-insensitive filesystems, non-magic patterns will match by default, since `stat` and `readdir` will not raise errors. * `matchBase` Perform a basename-only match if the pattern does not contain any slash characters. That is, `*.js` would be treated as equivalent to `**/*.js`, matching all js files in all directories. * `nodir` Do not match directories, only files. (Note: to match *only* directories, simply put a `/` at the end of the pattern.) * `ignore` Add a pattern or an array of glob patterns to exclude matches. Note: `ignore` patterns are *always* in `dot:true` mode, regardless of any other settings. * `follow` Follow symlinked directories when expanding `**` patterns. Note that this can result in a lot of duplicate references in the presence of cyclic links. * `realpath` Set to true to call `fs.realpath` on all of the results. In the case of a symlink that cannot be resolved, the full absolute path to the matched entry is returned (though it will usually be a broken symlink) * `absolute` Set to true to always receive absolute paths for matched files. Unlike `realpath`, this also affects the values returned in the `match` event. * `fs` File-system object with Node's `fs` API. By default, the built-in `fs` module will be used. Set to a volume provided by a library like `memfs` to avoid using the "real" file-system. ## Comparisons to other fnmatch/glob implementations While strict compliance with the existing standards is a worthwhile goal, some discrepancies exist between node-glob and other implementations, and are intentional. The double-star character `**` is supported by default, unless the `noglobstar` flag is set. This is supported in the manner of bsdglob and bash 4.3, where `**` only has special significance if it is the only thing in a path part. That is, `a/**/b` will match `a/x/y/b`, but `a/**b` will not. Note that symlinked directories are not crawled as part of a `**`, though their contents may match against subsequent portions of the pattern. This prevents infinite loops and duplicates and the like. If an escaped pattern has no matches, and the `nonull` flag is set, then glob returns the pattern as-provided, rather than interpreting the character escapes. For example, `glob.match([], "\\*a\\?")` will return `"\\*a\\?"` rather than `"*a?"`. This is akin to setting the `nullglob` option in bash, except that it does not resolve escaped pattern characters. If brace expansion is not disabled, then it is performed before any other interpretation of the glob pattern. Thus, a pattern like `+(a|{b),c)}`, which would not be valid in bash or zsh, is expanded **first** into the set of `+(a|b)` and `+(a|c)`, and those patterns are checked for validity. Since those two are valid, matching proceeds. ### Comments and Negation Previously, this module let you mark a pattern as a "comment" if it started with a `#` character, or a "negated" pattern if it started with a `!` character. These options were deprecated in version 5, and removed in version 6. To specify things that should not match, use the `ignore` option. ## Windows **Please only use forward-slashes in glob expressions.** Though windows uses either `/` or `\` as its path separator, only `/` characters are used by this glob implementation. You must use forward-slashes **only** in glob expressions. Back-slashes will always be interpreted as escape characters, not path separators. Results from absolute patterns such as `/foo/*` are mounted onto the root setting using `path.join`. On windows, this will by default result in `/foo/*` matching `C:\foo\bar.txt`. ## Race Conditions Glob searching, by its very nature, is susceptible to race conditions, since it relies on directory walking and such. As a result, it is possible that a file that exists when glob looks for it may have been deleted or modified by the time it returns the result. As part of its internal implementation, this program caches all stat and readdir calls that it makes, in order to cut down on system overhead. However, this also makes it even more susceptible to races, especially if the cache or statCache objects are reused between glob calls. Users are thus advised not to use a glob result as a guarantee of filesystem state in the face of rapid changes. For the vast majority of operations, this is never a problem. ## Glob Logo Glob's logo was created by [Tanya Brassie](http://tanyabrassie.com/). Logo files can be found [here](https://github.com/isaacs/node-glob/tree/master/logo). The logo is licensed under a [Creative Commons Attribution-ShareAlike 4.0 International License](https://creativecommons.org/licenses/by-sa/4.0/). ## Contributing Any change to behavior (including bugfixes) must come with a test. Patches that fail tests or reduce performance will be rejected. ``` # to run tests npm test # to re-generate test fixtures npm run test-regen # to benchmark against bash/zsh npm run bench # to profile javascript npm run prof ```  # NEAR CLI (command line interface) [](https://travis-ci.com/near/near-cli) [](https://gitpod.io/#https://github.com/near/near-cli) NEAR CLI is a Node.js application that relies on [`near-api-js`](https://github.com/near/near-api-js) to connect to and interact with the NEAR blockchain. Create accounts, access keys, sign & send transactions with this versatile command line interface tool. **Note:** Node.js version 10+ is required to run NEAR CLI. ## Overview _Click on a command for more information and examples._ | Command | Description | | ----------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------- | | **ACCESS KEYS** | | | [`near login`](#near-login) | stores a full access key locally using [NEAR Wallet](https://wallet.testnet.near.org/) | | [`near keys`](#near-keys) | displays all access keys and their details for a given account | | [`near generate-key`](#near-generate-key) | generates a local key pair **or** shows public key & [implicit account](http://docs.near.org/docs/roles/integrator/implicit-accounts) | | [`near add-key`](#near-add-key) | adds a new access key to an account | | [`near delete-key`](#near-delete-key) | deletes an access key from an account | | **ACCOUNTS** | | | [`near create-account`](#near-create-account) | creates an account | | [`near state`](#near-state) | shows general details of an account | | [`near keys`](#near-keys) | displays all access keys for a given account | | [`near send`](#near-send) | sends tokens from one account to another | | [`near delete`](#near-delete) | deletes an account and transfers remaining balance to a beneficiary account | | **CONTRACTS** | | | [`near deploy`](#near-deploy) | deploys a smart contract to the NEAR blockchain | | [`near dev-deploy`](#near-dev-deploy) | creates a development account and deploys a contract to it _(`testnet` only)_ | | [`near call`](#near-call) | makes a contract call which can invoke `change` _or_ `view` methods | | [`near view`](#near-view) | makes a contract call which can **only** invoke a `view` method | | **TRANSACTIONS** | | | [`near tx-status`](#near-tx-status) | queries a transaction's status by `txHash` | | **VALIDATORS** | | | [`near validators current`](#near-validators-current) | displays current [epoch](http://docs.near.org/docs/concepts/epoch) validator pool details | | [`near validators next`](#near-validators-next) | displays validator details for the next [epoch](http://docs.near.org/docs/concepts/epoch) | | [`near proposals`](#near-proposals) | displays validator proposals for the [epoch](http://docs.near.org/docs/concepts/epoch) _after_ next | | **REPL** | | | [`near repl`](#near-repl) | launches an interactive connection to the NEAR blockchain ([REPL](https://en.wikipedia.org/wiki/Read%E2%80%93eval%E2%80%93print_loop)) | [ [**OPTIONS**](#options) ] > For EVM support see [Project Aurora's](https://aurora.dev) [`aurora-cli`](https://github.com/aurora-is-near/aurora-cli). --- ## Setup ### Installation > Make sure you have a current version of `npm` and `NodeJS` installed. #### Mac and Linux 1. Install `npm` and `node` using a package manager like `nvm` as sometimes there are issues using Ledger due to how OS X handles node packages related to USB devices. [[click here]](https://nodejs.org/en/download/package-manager/) 2. Ensure you have installed Node version 12 or above. 3. Install `near-cli` globally by running: ```bash npm install -g near-cli ``` #### Windows > For Windows users, we recommend using Windows Subsystem for Linux (`WSL`). 1. Install `WSL` [[click here]](https://docs.microsoft.com/en-us/windows/wsl/install-manual#downloading-distros) 2. Install `npm` [[click here]](https://www.npmjs.com/get-npm) 3. Install ` Node.js` [ [ click here ]](https://nodejs.org/en/download/package-manager/) 4. Change `npm` default directory [ [ click here ] ](https://docs.npmjs.com/resolving-eacces-permissions-errors-when-installing-packages-globally#manually-change-npms-default-directory) - This is to avoid any permission issues with `WSL` 5. Open `WSL` and install `near-cli` globally by running: ```bash npm install -g near-cli ``` --- ### Network selection > The default network for `near-cli` is `testnet`. - You can change the network by prepending an environment variable to your command. ```bash NEAR_ENV=betanet near send ... ``` - Alternatively, you can set up a global environment variable by running: ```bash export NEAR_ENV=mainnet ``` --- ## Access Keys ### `near login` > locally stores a full access key of an account you created with [NEAR Wallet](https://wallet.testnet.near.org/). - arguments: `none` - options: `default` **Example:** ```bash near login ``` #### Access Key Location: - Once complete you will now have your Access Key stored locally in a hidden directory called `.near-credentials` - This directory is located at the root of your `HOME` directory: - `~/.near-credentials` _(MAC / Linux)_ - `C:\Users\YOUR_ACCOUNT\.near-credentials` _(Windows)_ - Inside `.near-credentials`, access keys are organized in network subdirectories: - `default` _for `testnet`_ - `betanet` - `mainnet` - These network subdirectories contain `.JSON` objects with an: - `account_id` - `private_key` - `public_key` **Example:** ```json { "account_id": "example-acct.testnet", "public_key": "ed25519:7ns2AZVaG8XZrFrgRw7g8qhgddNTN64Zkz7Eo8JBnV5g", "private_key": "ed25519:4Ijd3vNUmdWJ4L922BxcsGN1aDrdpvUHEgqLQAUSLmL7S2qE9tYR9fqL6DqabGGDxCSHkKwdaAGNcHJ2Sfd" } ``` --- ### `near keys` > Displays all access keys for a given account. - arguments: `accountId` - options: `default` **Example:** ```bash near keys client.chainlink.testnet ``` <details> <summary> <strong>Example Response</strong> </summary> <p> ``` Keys for account client.chainlink.testnet [ { public_key: 'ed25519:4wrVrZbHrurMYgkcyusfvSJGLburmaw7m3gmCApxgvY4', access_key: { nonce: 97, permission: 'FullAccess' } }, { public_key: 'ed25519:H9k5eiU4xXS3M4z8HzKJSLaZdqGdGwBG49o7orNC4eZW', access_key: { nonce: 88, permission: { FunctionCall: { allowance: '18483247987345065500000000', receiver_id: 'client.chainlink.testnet', method_names: [ 'get_token_price', [length]: 1 ] } } } }, [length]: 2 ] ``` </p> </details> --- ### `near generate-key` > Creates a key pair locally in `.near-credentials` **or** displays public key from Ledger or seed phrase. - arguments: `accountId` or `none` - options: `--useLedgerKey`, `--seedPhrase`, or `--seedPath` **Note:** There are several ways to use `generate-key` that return very different results. Please reference the examples below for further details. --- #### 1) `near generate-key` > Creates a key pair locally in `.near-credentials` with an [implicit account](http://docs.near.org/docs/roles/integrator/implicit-accounts) as the accountId. _(hash representation of the public key)_ ```bash near generate-key ``` <details> <summary><strong>Example Response</strong></summary> <p> ```bash Key pair with ed25519:33Vn9VtNEtWQPPd1f4jf5HzJ5weLcvGHU8oz7o5UnPqy public key for an account "1e5b1346bdb4fc5ccd465f6757a9082a84bcacfd396e7d80b0c726252fe8b3e8" ``` </p> </details> --- #### 2) `near generate-key accountId` > Creates a key pair locally in `.near-credentials` with an `accountId` that you specify. **Note:** This does NOT create an account with this name, and will overwrite an existing `.json` file with the same name. ```bash near generate-key example.testnet ``` <details> <summary><strong>Example Response</strong></summary> <p> ```bash Key pair with ed25519:CcH3oMEFg8tpJLekyvF7Wp49G81K3QLhGbaWEFwtCjht public key for an account "example.testnet" ``` </p> </details> --- #### 3a) `near generate-key --useLedgerKey` > Uses a connected Ledger device to display a public key and [implicit account](http://docs.near.org/docs/roles/integrator/implicit-accounts) using the default HD path (`"44'/397'/0'/0'/1'"`) ```bash near generate-key --useLedgerKey ``` You should then see the following prompt to confirm this request on your Ledger device: Make sure to connect your Ledger and open NEAR app Waiting for confirmation on Ledger... After confirming the request on your Ledger device, a public key and implicit accountId will be displayed. <details> <summary><strong>Example Response</strong></summary> <p> ```bash Using public key: ed25519:B22RP10g695wyeRvKIWv61NjmQZEkWTMzAYgdfx6oSeB2 Implicit account: 42c320xc20739fd9a6bqf2f89z61rd14efe5d3de234199bc771235a4bb8b0e1 ``` </p> </details> --- #### 3b) `near generate-key --useLedgerKey="HD path you specify"` > Uses a connected Ledger device to display a public key and [implicit account](http://docs.near.org/docs/roles/integrator/implicit-accounts) using a custom HD path. ```bash near generate-key --useLedgerKey="44'/397'/0'/0'/2'" ``` You should then see the following prompt to confirm this request on your Ledger device: Make sure to connect your Ledger and open NEAR app Waiting for confirmation on Ledger... After confirming the request on your Ledger device, a public key and implicit accountId will be displayed. <details> <summary><strong>Example Response</strong></summary> <p> ```bash Using public key: ed25519:B22RP10g695wye3dfa32rDjmQZEkWTMzAYgCX6oSeB2 Implicit account: 42c320xc20739ASD9a6bqf2Dsaf289z61rd14efe5d3de23213789009afDsd5bb8b0e1 ``` </p> </details> --- #### 4a) `near generate-key --seedPhrase="your seed phrase"` > Uses a seed phrase to display a public key and [implicit account](http://docs.near.org/docs/roles/integrator/implicit-accounts) ```bash near generate-key --seedPhrase="cow moon right send now cool dense quark pretty see light after" ``` <details> <summary><strong>Example Response</strong></summary> <p> Key pair with ed25519:GkMNfc92fwM1AmwH1MTjF4b7UZuceamsq96XPkHsQ9vi public key for an account "e9fa50ac20522987a87e566fcd6febdc97bd35c8c489999ca8aff465c56969c3" </p> </details> --- #### 4b) `near generate-key accountId --seedPhrase="your seed phrase"` > Uses a seed phrase to display a public key **without** the [implicit account](http://docs.near.org/docs/roles/integrator/implicit-accounts). ```bash near generate-key example.testnet --seedPhrase="cow moon right send now cool dense quark pretty see light after" ``` <details> <summary><strong>Example Response</strong></summary> <p> Key pair with ed25519:GkMNfc92fwM1AmwH1MTjF4b7UZuceamsq96XPkHsQ9vi public key for an account "example.testnet" </p> </details> --- ### `near add-key` > Adds an either a **full access** or **function access** key to a given account. **Note:** You will use an _existing_ full access key for the account you would like to add a _new_ key to. ([`near login`](http://docs.near.org/docs/tools/near-cli#near-login)) #### 1) add a `full access` key - arguments: `accountId` `publicKey` **Example:** ```bash near add-key example-acct.testnet Cxg2wgFYrdLTEkMu6j5D6aEZqTb3kXbmJygS48ZKbo1S ``` <details> <summary><strong>Example Response</strong></summary> <p> Adding full access key = Cxg2wgFYrdLTEkMu6j5D6aEZqTb3kXbmJygS48ZKbo1S to example-acct.testnet. Transaction Id EwU1ooEvkR42HvGoJHu5ou3xLYT3JcgQwFV3fAwevGJg To see the transaction in the transaction explorer, please open this url in your browser https://explorer.testnet.near.org/transactions/EwU1ooEvkR42HvGoJHu5ou3xLYT3JcgQwFV3fAwevGJg </p> </details> #### 2) add a `function access` key - arguments: `accountId` `publicKey` `--contract-id` - options: `--method-names` `--allowance` > `accountId` is the account you are adding the key to > > `--contract-id` is the contract you are allowing methods to be called on > > `--method-names` are optional and if omitted, all methods of the `--contract-id` can be called. > > `--allowance` is the amount of Ⓝ the key is allowed to spend on gas fees _only_. If omitted then key will only be able to call view methods. **Note:** Each transaction made with this key will have gas fees deducted from the initial allowance and once it runs out a new key must be issued. **Example:** ```bash near add-key example-acct.testnet GkMNfc92fwM1AmwH1MTjF4b7UZuceamsq96XPkHsQ9vi --contract-id example-contract.testnet --method-names example_method --allowance 30000000000 ``` <details> <summary><strong>Example Response</strong></summary> <p> Adding function call access key = GkMNfc92fwM1AmwH1MTjF4b7UZuceamsq96XPkHsQ9vi to example-acct.testnet. Transaction Id H2BQL9fXVmdTbwkXcMFfZ7qhZqC8fFhsA8KDHFdT9q2r To see the transaction in the transaction explorer, please open this url in your browser https://explorer.testnet.near.org/transactions/H2BQL9fXVmdTbwkXcMFfZ7qhZqC8fFhsA8KDHFdT9q2r </p> </details> --- ### `near delete-key` > Deletes an existing key for a given account. - arguments: `accountId` `publicKey` - options: `default` **Note:** You will need separate full access key for the account you would like to delete a key from. ([`near login`](http://docs.near.org/docs/tools/near-cli#near-login)) **Example:** ```bash near delete-key example-acct.testnet Cxg2wgFYrdLTEkMu6j5D6aEZqTb3kXbmJygS48ZKbo1S ``` <details> <summary><strong>Example Response</strong></summary> <p> Transaction Id 4PwW7vjzTCno7W433nu4ieA6FvsAjp7zNFwicNLKjQFT To see the transaction in the transaction explorer, please open this url in your browser https://explorer.testnet.near.org/transactions/4PwW7vjzTCno7W433nu4ieA6FvsAjp7zNFwicNLKjQFT </p> </details> --- ## Accounts ### `near create-account` > Creates an account using a `--masterAccount` that will pay for the account's creation and any initial balance. - arguments: `accountId` `--masterAccount` - options: `--initialBalance` **Note:** You will only be able to create subaccounts of the `--masterAccount` unless the name of the new account is ≥ 32 characters. **Example**: ```bash near create-account 12345678901234567890123456789012 --masterAccount example-acct.testnet ``` **Subaccount example:** ```bash near create-account sub-acct.example-acct.testnet --masterAccount example-acct.testnet ``` **Example using `--initialBalance`:** ```bash near create-account sub-acct2.example-acct.testnet --masterAccount example-acct.testnet --initialBalance 10 ``` <details> <summary><strong>Example Response</strong></summary> <p> Saving key to '/HOME_DIR/.near-credentials/default/sub-acct2.example-acct.testnet.json' Account sub-acct2.example-acct.testnet for network "default" was created. </p> </details> --- ### `near state` > Shows details of an account's state. - arguments: `accountId` - options: `default` **Example:** ```bash near state example.testnet ``` <details> <summary><strong>Example Response</strong></summary> <p> ```json { "amount": "99999999303364037168535000", "locked": "0", "code_hash": "G1PCjeQbvbUsJ8piXNb7Yg6dn3mfivDQN7QkvsVuMt4e", "storage_usage": 53528, "storage_paid_at": 0, "block_height": 21577354, "block_hash": "AWu1mrT3eMJLjqyhNHvMKrrbahN6DqcNxXanB5UH1RjB", "formattedAmount": "99.999999303364037168535" } ``` </p> </details> --- ### `near send` > Sends NEAR tokens (Ⓝ) from one account to another. - arguments: `senderId` `receiverId` `amount` - options: `default` **Note:** You will need a full access key for the sending account. ([`near login`](http://docs.near.org/docs/tools/near-cli#near-login)) **Example:** ```bash near send sender.testnet receiver.testnet 10 ``` <details> <summary><strong>Example Response</strong></summary> <p> Sending 10 NEAR to receiver.testnet from sender.testnet Transaction Id BYTr6WNyaEy2ykAiQB9P5VvTyrJcFk6Yw95HPhXC6KfN To see the transaction in the transaction explorer, please open this url in your browser https://explorer.testnet.near.org/transactions/BYTr6WNyaEy2ykAiQB9P5VvTyrJcFk6Yw95HPhXC6KfN </p> </details> --- ### `near delete` > Deletes an account and transfers remaining balance to a beneficiary account. - arguments: `accountId` `beneficiaryId` - options: `default` **Example:** ```bash near delete sub-acct2.example-acct.testnet example-acct.testnet ``` <details> <summary><strong>Example Response</strong></summary> <p> Deleting account. Account id: sub-acct2.example-acct.testnet, node: https://rpc.testnet.near.org, helper: https://helper.testnet.near.org, beneficiary: example-acct.testnet Transaction Id 4x8xohER1E3yxeYdXPfG8GvXin1ShiaroqE5GdCd5YxX To see the transaction in the transaction explorer, please open this url in your browser https://explorer.testnet.near.org/transactions/4x8xohER1E3yxeYdXPfG8GvXin1ShiaroqE5GdCd5YxX Account sub-acct2.example-acct.testnet for network "default" was deleted. </p> </details> --- ## Contracts ### `near deploy` > Deploys a smart contract to a given accountId. - arguments: `accountId` `.wasmFile` - options: `initFunction` `initArgs` `initGas` `initDeposit` **Note:** You will need a full access key for the account you are deploying the contract to. ([`near login`](http://docs.near.org/docs/tools/near-cli#near-login)) **Example:** ```bash near deploy --accountId example-contract.testnet --wasmFile out/example.wasm ``` **Initialize Example:** ```bash near deploy --accountId example-contract.testnet --wasmFile out/example.wasm --initFunction new --initArgs '{"owner_id": "example-contract.testnet", "total_supply": "10000000"}' ``` <details> <summary><strong>Example Response</strong></summary> <p> Starting deployment. Account id: example-contract.testnet, node: https://rpc.testnet.near.org, helper: https://helper.testnet.near.org, file: main.wasm Transaction Id G8GhhPuujMHTRnwursPXE1Lv5iUZ8WUecwiST1PcKWMt To see the transaction in the transaction explorer, please open this url in your browser https://explorer.testnet.near.org/transactions/G8GhhPuujMHTRnwursPXE1Lv5iUZ8WUecwiST1PcKWMt Done deploying to example-contract.testnet </p> </details> ### `near dev-deploy` > Creates a development account and deploys a smart contract to it. No access keys needed. **_(`testnet` only)_** - arguments: `.wasmFile` - options: `default` **Example:** ```bash near dev-deploy out/main.wasm ``` <details> <summary><strong>Example Response</strong></summary> <p> Starting deployment. Account id: dev-1603749005325-6432576, node: https://rpc.testnet.near.org, helper: https://helper.testnet.near.org, file: out/main.wasm Transaction Id 5nixQT87KeN3eZFX7zwBLUAKSY4nyjhwzLF27SWWKkAp To see the transaction in the transaction explorer, please open this url in your browser https://explorer.testnet.near.org/transactions/5nixQT87KeN3eZFX7zwBLUAKSY4nyjhwzLF27SWWKkAp Done deploying to dev-1603749005325-6432576 </p> </details> --- ### `near call` > makes a contract call which can modify _or_ view state. **Note:** Contract calls require a transaction fee (gas) so you will need an access key for the `--accountId` that will be charged. ([`near login`](http://docs.near.org/docs/tools/near-cli#near-login)) - arguments: `contractName` `method_name` `{ args }` `--accountId` - options: `--gas` `--deposit` **Example:** ```bash near call guest-book.testnet addMessage '{"text": "Aloha"}' --account-id example-acct.testnet ``` <details> <summary><strong>Example Response</strong></summary> <p> Scheduling a call: guest-book.testnet.addMessage({"text": "Aloha"}) Transaction Id FY8hBam2iyQfdHkdR1dp6w5XEPJzJSosX1wUeVPyUvVK To see the transaction in the transaction explorer, please open this url in your browser https://explorer.testnet.near.org/transactions/FY8hBam2iyQfdHkdR1dp6w5XEPJzJSosX1wUeVPyUvVK '' </p> </details> --- ### `near view` > Makes a contract call which can **only** view state. _(Call is free of charge)_ - arguments: `contractName` `method_name` `{ args }` - options: `default` **Example:** ```bash near view guest-book.testnet getMessages '{}' ``` <details> <summary><strong>Example Response</strong></summary> <p> View call: guest-book.testnet.getMessages({}) [ { premium: false, sender: 'waverlymaven.testnet', text: 'TGIF' }, { premium: true, sender: 'waverlymaven.testnet', text: 'Hello from New York 🌈' }, { premium: false, sender: 'fhr.testnet', text: 'Hi' }, { premium: true, sender: 'eugenethedream', text: 'test' }, { premium: false, sender: 'dongri.testnet', text: 'test' }, { premium: false, sender: 'dongri.testnet', text: 'hello' }, { premium: true, sender: 'dongri.testnet', text: 'hey' }, { premium: false, sender: 'hirokihori.testnet', text: 'hello' }, { premium: true, sender: 'eugenethedream', text: 'hello' }, { premium: false, sender: 'example-acct.testnet', text: 'Aloha' }, [length]: 10 ] </p> </details> --- ## NEAR EVM Contracts ### `near evm-view` > Makes an EVM contract call which can **only** view state. _(Call is free of charge)_ - arguments: `evmAccount` `contractName` `methodName` `[arguments]` `--abi` `--accountId` - options: `default` **Example:** ```bash near evm-view evm 0x89dfB1Cd61F05ad3971EC1f83056Fd9793c2D521 getAdopters '[]' --abi /path/to/contract/abi/Adoption.json --accountId test.near ``` <details> <summary><strong>Example Response</strong></summary> <p> ```json [ "0x0000000000000000000000000000000000000000", "0x0000000000000000000000000000000000000000", "0x0000000000000000000000000000000000000000", "0x0000000000000000000000000000000000000000", "0x0000000000000000000000000000000000000000", "0x0000000000000000000000000000000000000000", "0xCBdA96B3F2B8eb962f97AE50C3852CA976740e2B", "0x0000000000000000000000000000000000000000", "0x0000000000000000000000000000000000000000", "0x0000000000000000000000000000000000000000", "0x0000000000000000000000000000000000000000", "0x0000000000000000000000000000000000000000", "0x0000000000000000000000000000000000000000", "0x0000000000000000000000000000000000000000", "0x0000000000000000000000000000000000000000", "0x0000000000000000000000000000000000000000" ] ``` </p> </details> --- ### `near evm-call (deprecated)` > makes an EVM contract call which can modify _or_ view state. **Note:** Contract calls require a transaction fee (gas) so you will need an access key for the `--accountId` that will be charged. ([`near login`](http://docs.near.org/docs/tools/near-cli#near-login)) - arguments: `evmAccount` `contractName` `methodName` `[arguments]` `--abi` `--accountId` - options: `default` (`--gas` and `--deposit` coming soon…) **Example:** ```bash near evm-call evm 0x89dfB1Cd61F05ad3971EC1f83056Fd9793c2D521 adopt '["6"]' --abi /path/to/contract/abi/Adoption.json --accountId test.near ``` <details> <summary><strong>Example Response</strong></summary> <p> Scheduling a call inside evm EVM: 0x89dfB1Cd61F05ad3971EC1f83056Fd9793c2D521.adopt() with args [ '6' ] </p> </details> --- ### `near evm-dev-init` > Used for running EVM tests — creates a given number of test accounts on the desired network using a master NEAR account - arguments: `accountId` - options: `numAccounts` ```bash NEAR_ENV=betanet near evm-dev-init you.betanet 3 ``` The above will create 3 subaccounts of `you.betanet`. This is useful for tests that require multiple accounts, for instance, sending fungible tokens back and forth. If the `3` value were to be omitted, it would use the default of 5. --- ## Transactions ### `near tx-status` > Queries transaction status by hash and accountId. - arguments: `txHash` `--accountId` - options: `default` **Example:** ```bash near tx-status FY8hBam2iyQfdHkdR1dp6w5XEPJzJSosX1wUeVPyUvVK --accountId guest-book.testnet ``` <details> <summary><strong>Example Response</strong></summary> <p> ```json Transaction guest-book.testnet:FY8hBam2iyQfdHkdR1dp6w5XEPJzJSosX1wUeVPyUvVK { status: { SuccessValue: '' }, transaction: { signer_id: 'example-acct.testnet', public_key: 'ed25519:AXZZKnp6ZcWXyRNdy8FztYrniKf1qt6YZw6mCCReXrDB', nonce: 20, receiver_id: 'guest-book.testnet', actions: [ { FunctionCall: { method_name: 'addMessage', args: 'eyJ0ZXh0IjoiQWxvaGEifQ==', gas: 300000000000000, deposit: '0' } }, [length]: 1 ], signature: 'ed25519:5S6nZXPU72nzgAsTQLmAFfdVSykdKHWhtPMb5U7duacfPdUjrj8ipJxuRiWkZ4yDodvDNt92wcHLJxGLsyNEsZNB', hash: 'FY8hBam2iyQfdHkdR1dp6w5XEPJzJSosX1wUeVPyUvVK' }, transaction_outcome: { proof: [ [length]: 0 ], block_hash: '6nsjvzt6C52SSuJ8UvfaXTsdrUwcx8JtHfnUj8XjdKy1', id: 'FY8hBam2iyQfdHkdR1dp6w5XEPJzJSosX1wUeVPyUvVK', outcome: { logs: [ [length]: 0 ], receipt_ids: [ '7n6wjMgpoBTp22ScLHxeMLzcCvN8Vf5FUuC9PMmCX6yU', [length]: 1 ], gas_burnt: 2427979134284, tokens_burnt: '242797913428400000000', executor_id: 'example-acct.testnet', status: { SuccessReceiptId: '7n6wjMgpoBTp22ScLHxeMLzcCvN8Vf5FUuC9PMmCX6yU' } } }, receipts_outcome: [ { proof: [ [length]: 0 ], block_hash: 'At6QMrBuFQYgEPAh6fuRBmrTAe9hXTY1NzAB5VxTH1J2', id: '7n6wjMgpoBTp22ScLHxeMLzcCvN8Vf5FUuC9PMmCX6yU', outcome: { logs: [ [length]: 0 ], receipt_ids: [ 'FUttfoM2odAhKNQrJ8F4tiBpQJPYu66NzFbxRKii294e', [length]: 1 ], gas_burnt: 3559403233496, tokens_burnt: '355940323349600000000', executor_id: 'guest-book.testnet', status: { SuccessValue: '' } } }, { proof: [ [length]: 0 ], block_hash: 'J7KjpMPzAqE7iX82FAQT3qERDs6UR1EAqBLPJXBzoLCk', id: 'FUttfoM2odAhKNQrJ8F4tiBpQJPYu66NzFbxRKii294e', outcome: { logs: [ [length]: 0 ], receipt_ids: [ [length]: 0 ], gas_burnt: 0, tokens_burnt: '0', executor_id: 'example-acct.testnet', status: { SuccessValue: '' } } }, [length]: 2 ] } ``` </p> </details> --- ## Validators ### `near validators current` > Displays details of current validators. > > - amount staked > - number of seats > - percentage of uptime > - expected block production > - blocks actually produced - arguments: `current` - options: `default` **Example:** ```bash near validators current ``` **Example for `mainnet`:** ```bash NEAR_ENV=mainnet near validators current ``` <details> <summary><strong>Example Response</strong></summary> <p> ```bash Validators (total: 49, seat price: 1,976,588): .--------------------------------------------------------------------------------------------------------------------. | Validator Id | Stake | Seats | % Online | Blocks produced | Blocks expected | |----------------------------------------------|------------|---------|----------|-----------------|-----------------| | cryptium.poolv1.near | 13,945,727 | 7 | 100% | 1143 | 1143 | | astro-stakers.poolv1.near | 11,660,189 | 5 | 100% | 817 | 817 | | blockdaemon.poolv1.near | 11,542,867 | 5 | 76.74% | 627 | 817 | | zavodil.poolv1.near | 11,183,187 | 5 | 100% | 818 | 818 | | bisontrails.poolv1.near | 10,291,696 | 5 | 99.38% | 810 | 815 | | dokiacapital.poolv1.near | 7,906,352 | 3 | 99.54% | 650 | 653 | | chorusone.poolv1.near | 7,480,508 | 3 | 100% | 490 | 490 | | figment.poolv1.near | 6,931,070 | 3 | 100% | 489 | 489 | | stardust.poolv1.near | 6,401,678 | 3 | 100% | 491 | 491 | | anonymous.poolv1.near | 6,291,821 | 3 | 97.55% | 479 | 491 | | d1.poolv1.near | 6,265,109 | 3 | 100% | 491 | 491 | | near8888.poolv1.near | 6,202,968 | 3 | 99.38% | 486 | 489 | | rekt.poolv1.near | 5,950,212 | 3 | 100% | 490 | 490 | | epic.poolv1.near | 5,639,256 | 2 | 100% | 326 | 326 | | fresh.poolv1.near | 5,460,410 | 2 | 100% | 327 | 327 | | buildlinks.poolv1.near | 4,838,398 | 2 | 99.38% | 325 | 327 | | jubi.poolv1.near | 4,805,921 | 2 | 100% | 326 | 326 | | openshards.poolv1.near | 4,644,553 | 2 | 100% | 326 | 326 | | jazza.poolv1.near | 4,563,432 | 2 | 100% | 327 | 327 | | northernlights.poolv1.near | 4,467,978 | 2 | 99.39% | 326 | 328 | | inotel.poolv1.near | 4,427,152 | 2 | 100% | 327 | 327 | | baziliknear.poolv1.near | 4,261,142 | 2 | 100% | 328 | 328 | | stakesabai.poolv1.near | 4,242,618 | 2 | 100% | 326 | 326 | | everstake.poolv1.near | 4,234,552 | 2 | 100% | 327 | 327 | | stakin.poolv1.near | 4,071,704 | 2 | 100% | 327 | 327 | | certusone.poolv1.near | 3,734,505 | 1 | 100% | 164 | 164 | | lux.poolv1.near | 3,705,394 | 1 | 100% | 163 | 163 | | staked.poolv1.near | 3,683,365 | 1 | 100% | 164 | 164 | | lunanova.poolv1.near | 3,597,231 | 1 | 100% | 163 | 163 | | appload.poolv1.near | 3,133,163 | 1 | 100% | 163 | 163 | | smart-stake.poolv1.near | 3,095,711 | 1 | 100% | 164 | 164 | | artemis.poolv1.near | 3,009,462 | 1 | 99.39% | 163 | 164 | | moonlet.poolv1.near | 2,790,296 | 1 | 100% | 163 | 163 | | nearfans.poolv1.near | 2,771,137 | 1 | 100% | 163 | 163 | | nodeasy.poolv1.near | 2,692,745 | 1 | 99.39% | 163 | 164 | | erm.poolv1.near | 2,653,524 | 1 | 100% | 164 | 164 | | zkv_staketosupportprivacy.poolv1.near | 2,548,343 | 1 | 99.39% | 163 | 164 | | dsrvlabs.poolv1.near | 2,542,925 | 1 | 100% | 164 | 164 | | 08investinwomen_runbybisontrails.poolv1.near | 2,493,123 | 1 | 100% | 163 | 163 | | electric.poolv1.near | 2,400,532 | 1 | 99.39% | 163 | 164 | | sparkpool.poolv1.near | 2,378,191 | 1 | 100% | 163 | 163 | | hashquark.poolv1.near | 2,376,424 | 1 | 100% | 164 | 164 | | masternode24.poolv1.near | 2,355,634 | 1 | 100% | 164 | 164 | | sharpdarts.poolv1.near | 2,332,398 | 1 | 99.38% | 162 | 163 | | fish.poolv1.near | 2,315,249 | 1 | 100% | 163 | 163 | | ashert.poolv1.near | 2,103,327 | 1 | 97.56% | 160 | 164 | | 01node.poolv1.near | 2,058,200 | 1 | 100% | 163 | 163 | | finoa.poolv1.near | 2,012,304 | 1 | 100% | 163 | 163 | | majlovesreg.poolv1.near | 2,005,032 | 1 | 100% | 164 | 164 | '--------------------------------------------------------------------------------------------------------------------' ``` </p> </details> --- ### `near validators next` > Displays details for the next round of validators. > > - total number of seats available > - seat price > - amount staked > - number of seats assigned per validator - arguments: `next` - options: `default` **Example:** ```bash near validators next ``` **Example for `mainnet`:** ```bash NEAR_ENV=mainnet near validators next ``` <details> <summary><strong>Example Response</strong></summary> <p> ```bash Next validators (total: 49, seat price: 1,983,932): .----------------------------------------------------------------------------------------------. | Status | Validator | Stake | Seats | |----------|----------------------------------------------|--------------------------|---------| | Rewarded | cryptium.poolv1.near | 13,945,727 -> 14,048,816 | 7 | | Rewarded | astro-stakers.poolv1.near | 11,660,189 -> 11,704,904 | 5 | | Rewarded | blockdaemon.poolv1.near | 11,542,867 -> 11,545,942 | 5 | | Rewarded | zavodil.poolv1.near | 11,183,187 -> 11,204,123 | 5 | | Rewarded | bisontrails.poolv1.near | 10,291,696 -> 10,297,923 | 5 | | Rewarded | dokiacapital.poolv1.near | 7,906,352 -> 8,097,275 | 4 | | Rewarded | chorusone.poolv1.near | 7,480,508 -> 7,500,576 | 3 | | Rewarded | figment.poolv1.near | 6,931,070 -> 6,932,916 | 3 | | Rewarded | stardust.poolv1.near | 6,401,678 -> 6,449,363 | 3 | | Rewarded | anonymous.poolv1.near | 6,291,821 -> 6,293,497 | 3 | | Rewarded | d1.poolv1.near | 6,265,109 -> 6,266,777 | 3 | | Rewarded | near8888.poolv1.near | 6,202,968 -> 6,204,620 | 3 | | Rewarded | rekt.poolv1.near | 5,950,212 -> 5,951,797 | 2 | | Rewarded | epic.poolv1.near | 5,639,256 -> 5,640,758 | 2 | | Rewarded | fresh.poolv1.near | 5,460,410 -> 5,461,811 | 2 | | Rewarded | buildlinks.poolv1.near | 4,838,398 -> 4,839,686 | 2 | | Rewarded | jubi.poolv1.near | 4,805,921 -> 4,807,201 | 2 | | Rewarded | openshards.poolv1.near | 4,644,553 -> 4,776,692 | 2 | | Rewarded | jazza.poolv1.near | 4,563,432 -> 4,564,648 | 2 | | Rewarded | northernlights.poolv1.near | 4,467,978 -> 4,469,168 | 2 | | Rewarded | inotel.poolv1.near | 4,427,152 -> 4,428,331 | 2 | | Rewarded | baziliknear.poolv1.near | 4,261,142 -> 4,290,338 | 2 | | Rewarded | stakesabai.poolv1.near | 4,242,618 -> 4,243,748 | 2 | | Rewarded | everstake.poolv1.near | 4,234,552 -> 4,235,679 | 2 | | Rewarded | stakin.poolv1.near | 4,071,704 -> 4,072,773 | 2 | | Rewarded | certusone.poolv1.near | 3,734,505 -> 3,735,500 | 1 | | Rewarded | lux.poolv1.near | 3,705,394 -> 3,716,381 | 1 | | Rewarded | staked.poolv1.near | 3,683,365 -> 3,684,346 | 1 | | Rewarded | lunanova.poolv1.near | 3,597,231 -> 3,597,836 | 1 | | Rewarded | appload.poolv1.near | 3,133,163 -> 3,152,302 | 1 | | Rewarded | smart-stake.poolv1.near | 3,095,711 -> 3,096,509 | 1 | | Rewarded | artemis.poolv1.near | 3,009,462 -> 3,010,265 | 1 | | Rewarded | moonlet.poolv1.near | 2,790,296 -> 2,948,565 | 1 | | Rewarded | nearfans.poolv1.near | 2,771,137 -> 2,771,875 | 1 | | Rewarded | nodeasy.poolv1.near | 2,692,745 -> 2,693,463 | 1 | | Rewarded | erm.poolv1.near | 2,653,524 -> 2,654,231 | 1 | | Rewarded | dsrvlabs.poolv1.near | 2,542,925 -> 2,571,865 | 1 | | Rewarded | zkv_staketosupportprivacy.poolv1.near | 2,548,343 -> 2,549,022 | 1 | | Rewarded | 08investinwomen_runbybisontrails.poolv1.near | 2,493,123 -> 2,493,787 | 1 | | Rewarded | masternode24.poolv1.near | 2,355,634 -> 2,456,226 | 1 | | Rewarded | fish.poolv1.near | 2,315,249 -> 2,415,831 | 1 | | Rewarded | electric.poolv1.near | 2,400,532 -> 2,401,172 | 1 | | Rewarded | sparkpool.poolv1.near | 2,378,191 -> 2,378,824 | 1 | | Rewarded | hashquark.poolv1.near | 2,376,424 -> 2,377,057 | 1 | | Rewarded | sharpdarts.poolv1.near | 2,332,398 -> 2,332,948 | 1 | | Rewarded | ashert.poolv1.near | 2,103,327 -> 2,103,887 | 1 | | Rewarded | 01node.poolv1.near | 2,058,200 -> 2,058,760 | 1 | | Rewarded | finoa.poolv1.near | 2,012,304 -> 2,015,808 | 1 | | Rewarded | majlovesreg.poolv1.near | 2,005,032 -> 2,005,566 | 1 | '----------------------------------------------------------------------------------------------' ``` </p> </details> --- ### `near proposals` > Displays validator proposals for [epoch](http://docs.near.org/docs/concepts/epoch) after next. > > - expected seat price > - status of proposals > - previous amount staked and new amount that _will_ be staked > - amount of seats assigned per validator - arguments: `none` - options: `default` **Example:** ```bash near proposals ``` **Example for `mainnet`:** ```bash NEAR_ENV=mainnet near proposals ``` <details> <summary><strong>Example Response</strong></summary> <p> ```bash Proposals for the epoch after next (new: 51, passing: 49, expected seat price = 1,983,932) .--------------------------------------------------------------------------------------------------------. | Status | Validator | Stake => New Stake | Seats | |--------------------|----------------------------------------------|--------------------------|---------| | Proposal(Accepted) | cryptium.poolv1.near | 13,945,727 => 14,041,766 | 7 | | Proposal(Accepted) | astro-stakers.poolv1.near | 11,660,189 => 11,705,673 | 5 | | Proposal(Accepted) | blockdaemon.poolv1.near | 11,542,867 => 11,545,942 | 5 | | Proposal(Accepted) | zavodil.poolv1.near | 11,183,187 => 11,207,805 | 5 | | Proposal(Accepted) | bisontrails.poolv1.near | 10,291,696 => 10,300,978 | 5 | | Proposal(Accepted) | dokiacapital.poolv1.near | 7,906,352 => 8,097,275 | 4 | | Proposal(Accepted) | chorusone.poolv1.near | 7,480,508 => 7,568,268 | 3 | | Proposal(Accepted) | figment.poolv1.near | 6,931,070 => 6,932,916 | 3 | | Proposal(Accepted) | stardust.poolv1.near | 6,401,678 => 6,449,363 | 3 | | Proposal(Accepted) | anonymous.poolv1.near | 6,291,821 => 6,293,497 | 3 | | Proposal(Accepted) | d1.poolv1.near | 6,265,109 => 6,266,777 | 3 | | Proposal(Accepted) | near8888.poolv1.near | 6,202,968 => 6,204,620 | 3 | | Proposal(Accepted) | rekt.poolv1.near | 5,950,212 => 5,951,797 | 2 | | Proposal(Accepted) | epic.poolv1.near | 5,639,256 => 5,640,758 | 2 | | Proposal(Accepted) | fresh.poolv1.near | 5,460,410 => 5,461,811 | 2 | | Proposal(Accepted) | buildlinks.poolv1.near | 4,838,398 => 4,839,686 | 2 | | Proposal(Accepted) | jubi.poolv1.near | 4,805,921 => 4,807,201 | 2 | | Proposal(Accepted) | openshards.poolv1.near | 4,644,553 => 4,776,692 | 2 | | Proposal(Accepted) | jazza.poolv1.near | 4,563,432 => 4,564,648 | 2 | | Proposal(Accepted) | northernlights.poolv1.near | 4,467,978 => 4,469,168 | 2 | | Proposal(Accepted) | inotel.poolv1.near | 4,427,152 => 4,428,331 | 2 | | Proposal(Accepted) | baziliknear.poolv1.near | 4,261,142 => 4,290,891 | 2 | | Proposal(Accepted) | stakesabai.poolv1.near | 4,242,618 => 4,243,748 | 2 | | Proposal(Accepted) | everstake.poolv1.near | 4,234,552 => 4,235,679 | 2 | | Proposal(Accepted) | stakin.poolv1.near | 4,071,704 => 4,072,773 | 2 | | Proposal(Accepted) | certusone.poolv1.near | 3,734,505 => 3,735,500 | 1 | | Proposal(Accepted) | lux.poolv1.near | 3,705,394 => 3,716,381 | 1 | | Proposal(Accepted) | staked.poolv1.near | 3,683,365 => 3,684,346 | 1 | | Proposal(Accepted) | lunanova.poolv1.near | 3,597,231 => 3,597,836 | 1 | | Proposal(Accepted) | appload.poolv1.near | 3,133,163 => 3,152,302 | 1 | | Proposal(Accepted) | smart-stake.poolv1.near | 3,095,711 => 3,096,509 | 1 | | Proposal(Accepted) | artemis.poolv1.near | 3,009,462 => 3,010,265 | 1 | | Proposal(Accepted) | moonlet.poolv1.near | 2,790,296 => 2,948,565 | 1 | | Proposal(Accepted) | nearfans.poolv1.near | 2,771,137 => 2,771,875 | 1 | | Proposal(Accepted) | nodeasy.poolv1.near | 2,692,745 => 2,693,463 | 1 | | Proposal(Accepted) | erm.poolv1.near | 2,653,524 => 2,654,231 | 1 | | Proposal(Accepted) | dsrvlabs.poolv1.near | 2,542,925 => 2,571,865 | 1 | | Proposal(Accepted) | zkv_staketosupportprivacy.poolv1.near | 2,548,343 => 2,549,022 | 1 | | Proposal(Accepted) | 08investinwomen_runbybisontrails.poolv1.near | 2,493,123 => 2,493,787 | 1 | | Proposal(Accepted) | masternode24.poolv1.near | 2,355,634 => 2,456,226 | 1 | | Proposal(Accepted) | fish.poolv1.near | 2,315,249 => 2,415,831 | 1 | | Proposal(Accepted) | electric.poolv1.near | 2,400,532 => 2,401,172 | 1 | | Proposal(Accepted) | sparkpool.poolv1.near | 2,378,191 => 2,378,824 | 1 | | Proposal(Accepted) | hashquark.poolv1.near | 2,376,424 => 2,377,057 | 1 | | Proposal(Accepted) | sharpdarts.poolv1.near | 2,332,398 => 2,332,948 | 1 | | Proposal(Accepted) | ashert.poolv1.near | 2,103,327 => 2,103,887 | 1 | | Proposal(Accepted) | 01node.poolv1.near | 2,058,200 => 2,059,314 | 1 | | Proposal(Accepted) | finoa.poolv1.near | 2,012,304 => 2,015,808 | 1 | | Proposal(Accepted) | majlovesreg.poolv1.near | 2,005,032 => 2,005,566 | 1 | | Proposal(Declined) | huobipool.poolv1.near | 1,666,976 | 0 | | Proposal(Declined) | hb436_pool.poolv1.near | 500,030 | 0 | '--------------------------------------------------------------------------------------------------------' ``` </p> </details> --- ## REPL ### `near repl` > Launches NEAR [REPL](https://en.wikipedia.org/wiki/Read%E2%80%93eval%E2%80%93print_loop) _(an interactive JavaScript programming invironment)_ connected to NEAR. - arguments: `none` - options: `--accountId` To launch, run: ```bash near repl ``` - You will then be shown a prompt `>` and can begin interacting with NEAR. - Try typing the following into your prompt that converts NEAR (Ⓝ) into yoctoNEAR (10^-24): ```bash nearAPI.utils.format.parseNearAmount('1000') ``` > You can also use an `--accountId` with `near repl`. **Example:** ```bash near repl --accountId example-acct.testnet ``` - Then try console logging `account` after the `>` prompt. ```bash console.log(account) ``` <details> <summary><strong>Example Response</strong></summary> <p> ```json Account { accessKeyByPublicKeyCache: {}, connection: Connection { networkId: 'default', provider: JsonRpcProvider { connection: [Object] }, signer: InMemorySigner { keyStore: [MergeKeyStore] } }, accountId: 'example-acct.testnet', _ready: Promise { undefined }, _state: { amount: '98786165075093615800000000', locked: '0', code_hash: '11111111111111111111111111111111', storage_usage: 741, storage_paid_at: 0, block_height: 21661252, block_hash: 'HbAj25dTzP3ssYjNRHov9BQ72UxpHGVqZK1mZwGdGNbo' } } ``` </p> </details> > You can also get a private key's public key. - First, declare a `privateKey` variable: ```js const myPrivateKey = "3fKM9Rr7LHyzhhzmmedXLvc59rayfh1oUYS3VfUcxwpAFQZtdx1G9aTY6i8hG9mQtYoycTEFTBtatgNKHRtYamrS"; ``` - Then run: ```js nearAPI.KeyPair.fromString(myPrivateKey).publicKey.toString(); ``` With NEAR REPL you have complete access to [`near-api-js`](https://github.com/near/near-api-js) to help you develop on the NEAR platform. --- ## Options | Option | Description | | -------------------------- | -------------------------------------------------------------------------------------------------------------------------------------- | | `--help` | Show help [boolean] | | `--version` | Show version number [boolean] | | `--nodeUrl, --node_url` | NEAR node URL [string] [default: "https://rpc.testnet.near.org"] | | `--networkId, --network_id`| NEAR network ID, allows using different keys based on network [string] [default: "testnet"] | | `--helperUrl` | NEAR contract helper URL [string] | | `--keyPath` | Path to master account key [string] | | `--accountId, --account_id`| Unique identifier for the account [string] | | `--useLedgerKey` | Use Ledger for signing with given HD key path [string] [default: "44'/397'/0'/0'/1'"] | | `--seedPhrase` | Seed phrase mnemonic [string] | | `--seedPath` | HD path derivation [string] [default: "m/44'/397'/0'"] | | `--walletUrl` | Website for NEAR Wallet [string] | | `--contractName` | Account name of contract [string] | | `--masterAccount` | Master account used when creating new accounts [string] | | `--helperAccount` | Expected top-level account for a network [string] | | `-v, --verbose` | Prints out verbose output [boolean] [default: false] | > Got a question? <a href="https://stackoverflow.com/questions/tagged/nearprotocol"> <h8>Ask it on StackOverflow!</h8></a> ## License This repository is distributed under the terms of both the MIT license and the Apache License (Version 2.0). See [LICENSE](LICENSE) and [LICENSE-APACHE](LICENSE-APACHE) for details. # readable-stream ***Node.js core streams for userland*** [](https://travis-ci.com/nodejs/readable-stream) [](https://nodei.co/npm/readable-stream/) [](https://nodei.co/npm/readable-stream/) [](https://saucelabs.com/u/readabe-stream) ```bash npm install --save readable-stream ``` This package is a mirror of the streams implementations in Node.js. Full documentation may be found on the [Node.js website](https://nodejs.org/dist/v10.19.0/docs/api/stream.html). If you want to guarantee a stable streams base, regardless of what version of Node you, or the users of your libraries are using, use **readable-stream** *only* and avoid the *"stream"* module in Node-core, for background see [this blogpost](http://r.va.gg/2014/06/why-i-dont-use-nodes-core-stream-module.html). As of version 2.0.0 **readable-stream** uses semantic versioning. ## Version 3.x.x v3.x.x of `readable-stream` is a cut from Node 10. This version supports Node 6, 8, and 10, as well as evergreen browsers, IE 11 and latest Safari. The breaking changes introduced by v3 are composed by the combined breaking changes in [Node v9](https://nodejs.org/en/blog/release/v9.0.0/) and [Node v10](https://nodejs.org/en/blog/release/v10.0.0/), as follows: 1. Error codes: https://github.com/nodejs/node/pull/13310, https://github.com/nodejs/node/pull/13291, https://github.com/nodejs/node/pull/16589, https://github.com/nodejs/node/pull/15042, https://github.com/nodejs/node/pull/15665, https://github.com/nodejs/readable-stream/pull/344 2. 'readable' have precedence over flowing https://github.com/nodejs/node/pull/18994 3. make virtual methods errors consistent https://github.com/nodejs/node/pull/18813 4. updated streams error handling https://github.com/nodejs/node/pull/18438 5. writable.end should return this. https://github.com/nodejs/node/pull/18780 6. readable continues to read when push('') https://github.com/nodejs/node/pull/18211 7. add custom inspect to BufferList https://github.com/nodejs/node/pull/17907 8. always defer 'readable' with nextTick https://github.com/nodejs/node/pull/17979 ## Version 2.x.x v2.x.x of `readable-stream` is a cut of the stream module from Node 8 (there have been no semver-major changes from Node 4 to 8). This version supports all Node.js versions from 0.8, as well as evergreen browsers and IE 10 & 11. ### Big Thanks Cross-browser Testing Platform and Open Source <3 Provided by [Sauce Labs][sauce] # Usage You can swap your `require('stream')` with `require('readable-stream')` without any changes, if you are just using one of the main classes and functions. ```js const { Readable, Writable, Transform, Duplex, pipeline, finished } = require('readable-stream') ```` Note that `require('stream')` will return `Stream`, while `require('readable-stream')` will return `Readable`. We discourage using whatever is exported directly, but rather use one of the properties as shown in the example above. # Streams Working Group `readable-stream` is maintained by the Streams Working Group, which oversees the development and maintenance of the Streams API within Node.js. The responsibilities of the Streams Working Group include: * Addressing stream issues on the Node.js issue tracker. * Authoring and editing stream documentation within the Node.js project. * Reviewing changes to stream subclasses within the Node.js project. * Redirecting changes to streams from the Node.js project to this project. * Assisting in the implementation of stream providers within Node.js. * Recommending versions of `readable-stream` to be included in Node.js. * Messaging about the future of streams to give the community advance notice of changes. <a name="members"></a> ## Team Members * **Calvin Metcalf** ([@calvinmetcalf](https://github.com/calvinmetcalf)) &lt;calvin.metcalf@gmail.com&gt; - Release GPG key: F3EF5F62A87FC27A22E643F714CE4FF5015AA242 * **Mathias Buus** ([@mafintosh](https://github.com/mafintosh)) &lt;mathiasbuus@gmail.com&gt; * **Matteo Collina** ([@mcollina](https://github.com/mcollina)) &lt;matteo.collina@gmail.com&gt; - Release GPG key: 3ABC01543F22DD2239285CDD818674489FBC127E * **Irina Shestak** ([@lrlna](https://github.com/lrlna)) &lt;shestak.irina@gmail.com&gt; * **Yoshua Wyuts** ([@yoshuawuyts](https://github.com/yoshuawuyts)) &lt;yoshuawuyts@gmail.com&gt; [sauce]: https://saucelabs.com # Console Control Strings A library of cross-platform tested terminal/console command strings for doing things like color and cursor positioning. This is a subset of both ansi and vt100. All control codes included work on both Windows & Unix-like OSes, except where noted. ## Usage ```js var consoleControl = require('console-control-strings') console.log(consoleControl.color('blue','bgRed', 'bold') + 'hi there' + consoleControl.color('reset')) process.stdout.write(consoleControl.goto(75, 10)) ``` ## Why Another? There are tons of libraries similar to this one. I wanted one that was: 1. Very clear about compatibility goals. 2. Could emit, for instance, a start color code without an end one. 3. Returned strings w/o writing to streams. 4. Was not weighed down with other unrelated baggage. ## Functions ### var code = consoleControl.up(_num = 1_) Returns the escape sequence to move _num_ lines up. ### var code = consoleControl.down(_num = 1_) Returns the escape sequence to move _num_ lines down. ### var code = consoleControl.forward(_num = 1_) Returns the escape sequence to move _num_ lines righ. ### var code = consoleControl.back(_num = 1_) Returns the escape sequence to move _num_ lines left. ### var code = consoleControl.nextLine(_num = 1_) Returns the escape sequence to move _num_ lines down and to the beginning of the line. ### var code = consoleControl.previousLine(_num = 1_) Returns the escape sequence to move _num_ lines up and to the beginning of the line. ### var code = consoleControl.eraseData() Returns the escape sequence to erase everything from the current cursor position to the bottom right of the screen. This is line based, so it erases the remainder of the current line and all following lines. ### var code = consoleControl.eraseLine() Returns the escape sequence to erase to the end of the current line. ### var code = consoleControl.goto(_x_, _y_) Returns the escape sequence to move the cursor to the designated position. Note that the origin is _1, 1_ not _0, 0_. ### var code = consoleControl.gotoSOL() Returns the escape sequence to move the cursor to the beginning of the current line. (That is, it returns a carriage return, `\r`.) ### var code = consoleControl.beep() Returns the escape sequence to cause the termianl to beep. (That is, it returns unicode character `\x0007`, a Control-G.) ### var code = consoleControl.hideCursor() Returns the escape sequence to hide the cursor. ### var code = consoleControl.showCursor() Returns the escape sequence to show the cursor. ### var code = consoleControl.color(_colors = []_) ### var code = consoleControl.color(_color1_, _color2_, _…_, _colorn_) Returns the escape sequence to set the current terminal display attributes (mostly colors). Arguments can either be a list of attributes or an array of attributes. The difference between passing in an array or list of colors and calling `.color` separately for each one, is that in the former case a single escape sequence will be produced where as in the latter each change will have its own distinct escape sequence. Each attribute can be one of: * Reset: * **reset** – Reset all attributes to the terminal default. * Styles: * **bold** – Display text as bold. In some terminals this means using a bold font, in others this means changing the color. In some it means both. * **italic** – Display text as italic. This is not available in most Windows terminals. * **underline** – Underline text. This is not available in most Windows Terminals. * **inverse** – Invert the foreground and background colors. * **stopBold** – Do not display text as bold. * **stopItalic** – Do not display text as italic. * **stopUnderline** – Do not underline text. * **stopInverse** – Do not invert foreground and background. * Colors: * **white** * **black** * **blue** * **cyan** * **green** * **magenta** * **red** * **yellow** * **grey** / **brightBlack** * **brightRed** * **brightGreen** * **brightYellow** * **brightBlue** * **brightMagenta** * **brightCyan** * **brightWhite** * Background Colors: * **bgWhite** * **bgBlack** * **bgBlue** * **bgCyan** * **bgGreen** * **bgMagenta** * **bgRed** * **bgYellow** * **bgGrey** / **bgBrightBlack** * **bgBrightRed** * **bgBrightGreen** * **bgBrightYellow** * **bgBrightBlue** * **bgBrightMagenta** * **bgBrightCyan** * **bgBrightWhite** # bip39-light A lightweight fork of [bitcoinjs/bip39](https://github.com/bitcoinjs/bip39). Only english wordlist and removed some dependendecies. JavaScript implementation of [Bitcoin BIP39](https://github.com/bitcoin/bips/blob/master/bip-0039.mediawiki): Mnemonic code for generating deterministic keys ## Reminder for developers ***Please remember to allow recovery from mnemonic phrases that have invalid checksums (or that you don't have the wordlist)*** When a checksum is invalid, warn the user that the phrase is not something generated by your app, and ask if they would like to use it anyway. This way, your app only needs to hold the wordlists for your supported languages, but you can recover phrases made by other apps in other languages. However, there should be other checks in place, such as checking to make sure the user is inputting 12 words or more separated by a space. ie. `phrase.trim().split(/\s+/g).length >= 12` ## Examples ``` js // Generate a random mnemonic (uses crypto.randomBytes under the hood), defaults to 128-bits of entropy var mnemonic = bip39.generateMnemonic() // => 'seed sock milk update focus rotate barely fade car face mechanic mercy' bip39.mnemonicToSeedHex('basket actual') // => '5cf2d4a8b0355e90295bdfc565a022a409af063d5365bb57bf74d9528f494bfa4400f53d8349b80fdae44082d7f9541e1dba2b003bcfec9d0d53781ca676651f' bip39.mnemonicToSeed('basket actual') // => <Buffer 5c f2 d4 a8 b0 35 5e 90 29 5b df c5 65 a0 22 a4 09 af 06 3d 53 65 bb 57 bf 74 d9 52 8f 49 4b fa 44 00 f5 3d 83 49 b8 0f da e4 40 82 d7 f9 54 1e 1d ba 2b ...> bip39.validateMnemonic(mnemonic) // => true bip39.validateMnemonic('basket actual') // => false ``` ``` js var bip39 = require('bip39-light') // defaults to BIP39 English word list // uses HEX strings for entropy var mnemonic = bip39.entropyToMnemonic('00000000000000000000000000000000') // => abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about // reversible bip39.mnemonicToEntropy(mnemonic) // => '00000000000000000000000000000000' ``` # clone-response > Clone a Node.js HTTP response stream [](https://travis-ci.org/lukechilds/clone-response) [](https://coveralls.io/github/lukechilds/clone-response?branch=master) [](https://www.npmjs.com/package/clone-response) [](https://www.npmjs.com/package/clone-response) Returns a new stream and copies over all properties and methods from the original response giving you a complete duplicate. This is useful in situations where you need to consume the response stream but also want to pass an unconsumed stream somewhere else to be consumed later. ## Install ```shell npm install --save clone-response ``` ## Usage ```js const http = require('http'); const cloneResponse = require('clone-response'); http.get('http://example.com', response => { const clonedResponse = cloneResponse(response); response.pipe(process.stdout); setImmediate(() => { // The response stream has already been consumed by the time this executes, // however the cloned response stream is still available. doSomethingWithResponse(clonedResponse); }); }); ``` Please bear in mind that the process of cloning a stream consumes it. However, you can consume a stream multiple times in the same tick, therefore allowing you to create multiple clones. e.g: ```js const clone1 = cloneResponse(response); const clone2 = cloneResponse(response); // response can still be consumed in this tick but cannot be consumed if passed // into any async callbacks. clone1 and clone2 can be passed around and be // consumed in the future. ``` ## API ### cloneResponse(response) Returns a clone of the passed in response. #### response Type: `stream` A [Node.js HTTP response stream](https://nodejs.org/api/http.html#http_class_http_incomingmessage) to clone. ## License MIT © Luke Childs file-uri-to-path ================ ### Convert a `file:` URI to a file path [](https://travis-ci.org/TooTallNate/file-uri-to-path) Accepts a `file:` URI and returns a regular file path suitable for use with the `fs` module functions. Installation ------------ Install with `npm`: ``` bash $ npm install file-uri-to-path ``` Example ------- ``` js var uri2path = require('file-uri-to-path'); uri2path('file://localhost/c|/WINDOWS/clock.avi'); // "c:\\WINDOWS\\clock.avi" uri2path('file:///c|/WINDOWS/clock.avi'); // "c:\\WINDOWS\\clock.avi" uri2path('file://localhost/c:/WINDOWS/clock.avi'); // "c:\\WINDOWS\\clock.avi" uri2path('file://hostname/path/to/the%20file.txt'); // "\\\\hostname\\path\\to\\the file.txt" uri2path('file:///c:/path/to/the%20file.txt'); // "c:\\path\\to\\the file.txt" ``` API --- ### fileUriToPath(String uri) → String License ------- (The MIT License) Copyright (c) 2014 Nathan Rajlich &lt;nathan@tootallnate.net&gt; Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. aproba ====== A ridiculously light-weight function argument validator ``` var validate = require("aproba") function myfunc(a, b, c) { // `a` must be a string, `b` a number, `c` a function validate('SNF', arguments) // [a,b,c] is also valid } myfunc('test', 23, function () {}) // ok myfunc(123, 23, function () {}) // type error myfunc('test', 23) // missing arg error myfunc('test', 23, function () {}, true) // too many args error ``` Valid types are: | type | description | :--: | :---------- | * | matches any type | A | `Array.isArray` OR an `arguments` object | S | typeof == string | N | typeof == number | F | typeof == function | O | typeof == object and not type A and not type E | B | typeof == boolean | E | `instanceof Error` OR `null` **(special: see below)** | Z | == `null` Validation failures throw one of three exception types, distinguished by a `code` property of `EMISSINGARG`, `EINVALIDTYPE` or `ETOOMANYARGS`. If you pass in an invalid type then it will throw with a code of `EUNKNOWNTYPE`. If an **error** argument is found and is not null then the remaining arguments are optional. That is, if you say `ESO` then that's like using a non-magical `E` in: `E|ESO|ZSO`. ### But I have optional arguments?! You can provide more than one signature by separating them with pipes `|`. If any signature matches the arguments then they'll be considered valid. So for example, say you wanted to write a signature for `fs.createWriteStream`. The docs for it describe it thusly: ``` fs.createWriteStream(path[, options]) ``` This would be a signature of `SO|S`. That is, a string and and object, or just a string. Now, if you read the full `fs` docs, you'll see that actually path can ALSO be a buffer. And options can be a string, that is: ``` path <String> | <Buffer> options <String> | <Object> ``` To reproduce this you have to fully enumerate all of the possible combinations and that implies a signature of `SO|SS|OO|OS|S|O`. The awkwardness is a feature: It reminds you of the complexity you're adding to your API when you do this sort of thing. ### Browser support This has no dependencies and should work in browsers, though you'll have noisier stack traces. ### Why this exists I wanted a very simple argument validator. It needed to do two things: 1. Be more concise and easier to use than assertions 2. Not encourage an infinite bikeshed of DSLs This is why types are specified by a single character and there's no such thing as an optional argument. This is not intended to validate user data. This is specifically about asserting the interface of your functions. If you need greater validation, I encourage you to write them by hand or look elsewhere. # BIP39 [](https://travis-ci.org/bitcoinjs/bip39) [](https://www.npmjs.org/package/bip39) [](https://github.com/feross/standard) JavaScript implementation of [Bitcoin BIP39](https://github.com/bitcoin/bips/blob/master/bip-0039.mediawiki): Mnemonic code for generating deterministic keys ## Reminder for developers ***Please remember to allow recovery from mnemonic phrases that have invalid checksums (or that you don't have the wordlist)*** When a checksum is invalid, warn the user that the phrase is not something generated by your app, and ask if they would like to use it anyway. This way, your app only needs to hold the wordlists for your supported languages, but you can recover phrases made by other apps in other languages. However, there should be other checks in place, such as checking to make sure the user is inputting 12 words or more separated by a space. ie. `phrase.trim().split(/\s+/g).length >= 12` ## Removing wordlists from webpack/browserify Browserify/Webpack bundles can get very large if you include all the wordlists, so you can now exclude wordlists to make your bundle lighter. For example, if we want to exclude all wordlists besides chinese_simplified, you could build using the browserify command below. ```bash $ browserify -r bip39 -s bip39 \ --exclude=./wordlists/english.json \ --exclude=./wordlists/japanese.json \ --exclude=./wordlists/spanish.json \ --exclude=./wordlists/italian.json \ --exclude=./wordlists/french.json \ --exclude=./wordlists/korean.json \ --exclude=./wordlists/chinese_traditional.json \ > bip39.browser.js ``` This will create a bundle that only contains the chinese_simplified wordlist, and it will be the default wordlist for all calls without explicit wordlists. You can also do this in Webpack using the `IgnorePlugin`. Here is an example of excluding all non-English wordlists ```javascript ... plugins: [ new webpack.IgnorePlugin(/^\.\/(?!english)/, /bip39\/src\/wordlists$/), ], ... ``` This is how it will look in the browser console. ```javascript > bip39.entropyToMnemonic('00000000000000000000000000000000') "的 的 的 的 的 的 的 的 的 的 的 在" > bip39.wordlists.chinese_simplified Array(2048) [ "的", "一", "是", "在", "不", "了", "有", "和", "人", "这", … ] > bip39.wordlists.english undefined > bip39.wordlists.japanese undefined > bip39.wordlists.spanish undefined > bip39.wordlists.italian undefined > bip39.wordlists.french undefined > bip39.wordlists.korean undefined > bip39.wordlists.chinese_traditional undefined ``` For a list of supported wordlists check the wordlists folder. The name of the json file (minus the extension) is the name of the key to access the wordlist. You can also change the default wordlist at runtime if you dislike the wordlist you were given as default. ```javascript > bip39.entropyToMnemonic('00000000000000000000000000000fff') "あいこくしん　あいこくしん　あいこくしん　あいこくしん　あいこくしん　あいこくしん　あいこくしん　あいこくしん　あいこくしん　あいこくしん　あまい　ろんり" > bip39.setDefaultWordlist('italian') undefined > bip39.entropyToMnemonic('00000000000000000000000000000fff') "abaco abaco abaco abaco abaco abaco abaco abaco abaco abaco aforisma zibetto" ``` ## Installation ``` bash npm install bip39 ``` ## Examples ``` js // Generate a random mnemonic (uses crypto.randomBytes under the hood), defaults to 128-bits of entropy const mnemonic = bip39.generateMnemonic() // => 'seed sock milk update focus rotate barely fade car face mechanic mercy' bip39.mnemonicToSeedSync('basket actual').toString('hex') // => '5cf2d4a8b0355e90295bdfc565a022a409af063d5365bb57bf74d9528f494bfa4400f53d8349b80fdae44082d7f9541e1dba2b003bcfec9d0d53781ca676651f' bip39.mnemonicToSeedSync('basket actual') // => <Buffer 5c f2 d4 a8 b0 35 5e 90 29 5b df c5 65 a0 22 a4 09 af 06 3d 53 65 bb 57 bf 74 d9 52 8f 49 4b fa 44 00 f5 3d 83 49 b8 0f da e4 40 82 d7 f9 54 1e 1d ba 2b ...> // mnemonicToSeed has an synchronous version // mnemonicToSeedSync is less performance oriented bip39.mnemonicToSeed('basket actual').then(console.log) // => <Buffer 5c f2 d4 a8 b0 35 5e 90 29 5b df c5 65 a0 22 a4 09 af 06 3d 53 65 bb 57 bf 74 d9 52 8f 49 4b fa 44 00 f5 3d 83 49 b8 0f da e4 40 82 d7 f9 54 1e 1d ba 2b ...> bip39.mnemonicToSeed('basket actual').then(bytes => bytes.toString('hex')).then(console.log) // => '5cf2d4a8b0355e90295bdfc565a022a409af063d5365bb57bf74d9528f494bfa4400f53d8349b80fdae44082d7f9541e1dba2b003bcfec9d0d53781ca676651f' bip39.mnemonicToSeedSync('basket actual', 'a password') // => <Buffer 46 16 a4 4f 2c 90 b9 69 02 14 b8 fd 43 5b b4 14 62 43 de 10 7b 30 87 59 0a 3b b8 d3 1b 2f 3a ef ab 1d 4b 52 6d 21 e5 0a 04 02 3d 7a d0 66 43 ea 68 3b ... > bip39.validateMnemonic(mnemonic) // => true bip39.validateMnemonic('basket actual') // => false ``` ``` js const bip39 = require('bip39') // defaults to BIP39 English word list // uses HEX strings for entropy const mnemonic = bip39.entropyToMnemonic('00000000000000000000000000000000') // => abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about // reversible bip39.mnemonicToEntropy(mnemonic) // => '00000000000000000000000000000000' ``` # responselike > A response-like object for mocking a Node.js HTTP response stream [](https://travis-ci.org/lukechilds/responselike) [](https://coveralls.io/github/lukechilds/responselike?branch=master) [](https://www.npmjs.com/package/responselike) [](https://www.npmjs.com/package/responselike) Returns a streamable response object similar to a [Node.js HTTP response stream](https://nodejs.org/api/http.html#http_class_http_incomingmessage). Useful for formatting cached responses so they can be consumed by code expecting a real response. ## Install ```shell npm install --save responselike ``` Or if you're just using for testing you'll want: ```shell npm install --save-dev responselike ``` ## Usage ```js const Response = require('responselike'); const response = new Response(200, { foo: 'bar' }, Buffer.from('Hi!'), 'https://example.com'); response.statusCode; // 200 response.headers; // { foo: 'bar' } response.body; // <Buffer 48 69 21> response.url; // 'https://example.com' response.pipe(process.stdout); // Hi! ``` ## API ### new Response(statusCode, headers, body, url) Returns a streamable response object similar to a [Node.js HTTP response stream](https://nodejs.org/api/http.html#http_class_http_incomingmessage). #### statusCode Type: `number` HTTP response status code. #### headers Type: `object` HTTP headers object. Keys will be automatically lowercased. #### body Type: `buffer` A Buffer containing the response body. The Buffer contents will be streamable but is also exposed directly as `response.body`. #### url Type: `string` Request URL string. ## License MIT © Luke Childs # end-of-stream A node module that calls a callback when a readable/writable/duplex stream has completed or failed. npm install end-of-stream [](https://travis-ci.org/mafintosh/end-of-stream) ## Usage Simply pass a stream and a callback to the `eos`. Both legacy streams, streams2 and stream3 are supported. ``` js var eos = require('end-of-stream'); eos(readableStream, function(err) { // this will be set to the stream instance if (err) return console.log('stream had an error or closed early'); console.log('stream has ended', this === readableStream); }); eos(writableStream, function(err) { if (err) return console.log('stream had an error or closed early'); console.log('stream has finished', this === writableStream); }); eos(duplexStream, function(err) { if (err) return console.log('stream had an error or closed early'); console.log('stream has ended and finished', this === duplexStream); }); eos(duplexStream, {readable:false}, function(err) { if (err) return console.log('stream had an error or closed early'); console.log('stream has finished but might still be readable'); }); eos(duplexStream, {writable:false}, function(err) { if (err) return console.log('stream had an error or closed early'); console.log('stream has ended but might still be writable'); }); eos(readableStream, {error:false}, function(err) { // do not treat emit('error', err) as a end-of-stream }); ``` ## License MIT ## Related `end-of-stream` is part of the [mississippi stream utility collection](https://github.com/maxogden/mississippi) which includes more useful stream modules similar to this one. # Platform.js v1.3.5 A platform detection library that works on nearly all JavaScript platforms. ## Disclaimer Platform.js is for informational purposes only & **not** intended as a substitution for feature detection/inference checks. ## Documentation * [doc/README.md](https://github.com/bestiejs/platform.js/blob/master/doc/README.md#readme) * [wiki/Changelog](https://github.com/bestiejs/platform.js/wiki/Changelog) * [wiki/Roadmap](https://github.com/bestiejs/platform.js/wiki/Roadmap) * [platform.js demo](https://bestiejs.github.io/platform.js/) (See also [whatsmyua.info](https://www.whatsmyua.info/) for comparisons between platform.js and other platform detection libraries) ## Installation In a browser: ```html <script src="platform.js"></script> ``` In an AMD loader: ```js require(['platform'], function(platform) {/*…*/}); ``` Using npm: ```shell $ npm i --save platform ``` In Node.js: ```js var platform = require('platform'); ``` Usage example: ```js // on IE10 x86 platform preview running in IE7 compatibility mode on Windows 7 64 bit edition platform.name; // 'IE' platform.version; // '10.0' platform.layout; // 'Trident' platform.os; // 'Windows Server 2008 R2 / 7 x64' platform.description; // 'IE 10.0 x86 (platform preview; running in IE 7 mode) on Windows Server 2008 R2 / 7 x64' // or on an iPad platform.name; // 'Safari' platform.version; // '5.1' platform.product; // 'iPad' platform.manufacturer; // 'Apple' platform.layout; // 'WebKit' platform.os; // 'iOS 5.0' platform.description; // 'Safari 5.1 on Apple iPad (iOS 5.0)' // or parsing a given UA string var info = platform.parse('Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7.2; en; rv:2.0) Gecko/20100101 Firefox/4.0 Opera 11.52'); info.name; // 'Opera' info.version; // '11.52' info.layout; // 'Presto' info.os; // 'Mac OS X 10.7.2' info.description; // 'Opera 11.52 (identifying as Firefox 4.0) on Mac OS X 10.7.2' ``` ## Support Tested in Chrome 82-83, Firefox 77-78, IE 11, Edge 82-83, Safari 12-13, Node.js 4-14, & PhantomJS 2.1.1. ## BestieJS Platform.js is part of the BestieJS *“Best in Class”* module collection. This means we promote solid browser/environment support, ES5+ precedents, unit testing, & plenty of documentation. # simple-concat [![travis][travis-image]][travis-url] [![npm][npm-image]][npm-url] [![downloads][downloads-image]][downloads-url] [![javascript style guide][standard-image]][standard-url] [travis-image]: https://img.shields.io/travis/feross/simple-concat/master.svg [travis-url]: https://travis-ci.org/feross/simple-concat [npm-image]: https://img.shields.io/npm/v/simple-concat.svg [npm-url]: https://npmjs.org/package/simple-concat [downloads-image]: https://img.shields.io/npm/dm/simple-concat.svg [downloads-url]: https://npmjs.org/package/simple-concat [standard-image]: https://img.shields.io/badge/code_style-standard-brightgreen.svg [standard-url]: https://standardjs.com ### Super-minimalist version of [`concat-stream`](https://github.com/maxogden/concat-stream). Less than 15 lines! ## install ``` npm install simple-concat ``` ## usage This example is longer than the implementation. ```js var s = new stream.PassThrough() concat(s, function (err, buf) { if (err) throw err console.error(buf) }) s.write('abc') setTimeout(function () { s.write('123') }, 10) setTimeout(function () { s.write('456') }, 20) setTimeout(function () { s.end('789') }, 30) ``` ## license MIT. Copyright (c) [Feross Aboukhadijeh](http://feross.org). # WebIDL Type Conversions on JavaScript Values This package implements, in JavaScript, the algorithms to convert a given JavaScript value according to a given [WebIDL](http://heycam.github.io/webidl/) [type](http://heycam.github.io/webidl/#idl-types). The goal is that you should be able to write code like ```js const conversions = require("webidl-conversions"); function doStuff(x, y) { x = conversions["boolean"](x); y = conversions["unsigned long"](y); // actual algorithm code here } ``` and your function `doStuff` will behave the same as a WebIDL operation declared as ```webidl void doStuff(boolean x, unsigned long y); ``` ## API This package's main module's default export is an object with a variety of methods, each corresponding to a different WebIDL type. Each method, when invoked on a JavaScript value, will give back the new JavaScript value that results after passing through the WebIDL conversion rules. (See below for more details on what that means.) Alternately, the method could throw an error, if the WebIDL algorithm is specified to do so: for example `conversions["float"](NaN)` [will throw a `TypeError`](http://heycam.github.io/webidl/#es-float). ## Status All of the numeric types are implemented (float being implemented as double) and some others are as well - check the source for all of them. This list will grow over time in service of the [HTML as Custom Elements](https://github.com/dglazkov/html-as-custom-elements) project, but in the meantime, pull requests welcome! I'm not sure yet what the strategy will be for modifiers, e.g. [`[Clamp]`](http://heycam.github.io/webidl/#Clamp). Maybe something like `conversions["unsigned long"](x, { clamp: true })`? We'll see. We might also want to extend the API to give better error messages, e.g. "Argument 1 of HTMLMediaElement.fastSeek is not a finite floating-point value" instead of "Argument is not a finite floating-point value." This would require passing in more information to the conversion functions than we currently do. ## Background What's actually going on here, conceptually, is pretty weird. Let's try to explain. WebIDL, as part of its madness-inducing design, has its own type system. When people write algorithms in web platform specs, they usually operate on WebIDL values, i.e. instances of WebIDL types. For example, if they were specifying the algorithm for our `doStuff` operation above, they would treat `x` as a WebIDL value of [WebIDL type `boolean`](http://heycam.github.io/webidl/#idl-boolean). Crucially, they would _not_ treat `x` as a JavaScript variable whose value is either the JavaScript `true` or `false`. They're instead working in a different type system altogether, with its own rules. Separately from its type system, WebIDL defines a ["binding"](http://heycam.github.io/webidl/#ecmascript-binding) of the type system into JavaScript. This contains rules like: when you pass a JavaScript value to the JavaScript method that manifests a given WebIDL operation, how does that get converted into a WebIDL value? For example, a JavaScript `true` passed in the position of a WebIDL `boolean` argument becomes a WebIDL `true`. But, a JavaScript `true` passed in the position of a [WebIDL `unsigned long`](http://heycam.github.io/webidl/#idl-unsigned-long) becomes a WebIDL `1`. And so on. Finally, we have the actual implementation code. This is usually C++, although these days [some smart people are using Rust](https://github.com/servo/servo). The implementation, of course, has its own type system. So when they implement the WebIDL algorithms, they don't actually use WebIDL values, since those aren't "real" outside of specs. Instead, implementations apply the WebIDL binding rules in such a way as to convert incoming JavaScript values into C++ values. For example, if code in the browser called `doStuff(true, true)`, then the implementation code would eventually receive a C++ `bool` containing `true` and a C++ `uint32_t` containing `1`. The upside of all this is that implementations can abstract all the conversion logic away, letting WebIDL handle it, and focus on implementing the relevant methods in C++ with values of the correct type already provided. That is payoff of WebIDL, in a nutshell. And getting to that payoff is the goal of _this_ project—but for JavaScript implementations, instead of C++ ones. That is, this library is designed to make it easier for JavaScript developers to write functions that behave like a given WebIDL operation. So conceptually, the conversion pipeline, which in its general form is JavaScript values ↦ WebIDL values ↦ implementation-language values, in this case becomes JavaScript values ↦ WebIDL values ↦ JavaScript values. And that intermediate step is where all the logic is performed: a JavaScript `true` becomes a WebIDL `1` in an unsigned long context, which then becomes a JavaScript `1`. ## Don't Use This Seriously, why would you ever use this? You really shouldn't. WebIDL is … not great, and you shouldn't be emulating its semantics. If you're looking for a generic argument-processing library, you should find one with better rules than those from WebIDL. In general, your JavaScript should not be trying to become more like WebIDL; if anything, we should fix WebIDL to make it more like JavaScript. The _only_ people who should use this are those trying to create faithful implementations (or polyfills) of web platform interfaces defined in WebIDL. is2 === is2 is a type-checking module for JavaScript to test values. Is does not throw exceptions and every function only returns true or false. Use is2 to validate types in your node.js code. Every function in is2 returns either true of false. ## Installation To install is2, type: $ npm install is2 ## Usage const is = require('is2'); console.log(`1===1 is: ${is.equal(true, 1===1)}`); console.log(`10 is a positive number: ${is.positiveNumber(10)}`); console.log(`11 is an odd number: ${is.oddNumber(11)}`); ## API Each function returns true or false. The names after the '-' are aliases, which provide brevity. Environment: * is.browser() * is.defined(val) - is.def * is.nodejs() - is.node() * is.undefined(val) - is.udef, is.undef Types: * is.array(val) - is.ary, is.arry * is.arrayLike(val) - is.arryLike, is.aryLike, is.arrLike * is.arguments(val) - is.args * is.boolean(val) - is.bool * is.buffer(val) - is.buf, is.buff * is.date(val) * is.error(val) - is.err * is.false(val) * is.function(val) - is.funct, is.fun * is.mongoId - is.objectId, is.objId * is.null(val) * is.nullOrUndefined(val) - is.nullOrUndef * is.number(val) - is.num * is.object(val) - is.obj * is.regExp(val) - is.regexp, is.re * is.string(val) - is.str * is.true(val) * is.uuid(val) Relationships: * is.equal(val, other) - is.eq, is.objEquals * is.hosted(val, host) * is.instanceOf(val, constructor) - is.instOf, is.instanceof * is.matching(val1, val2 [, val3, ...]) - is.match : true if the first arument is strictly equal to any of the subsequent args. * is.objectInstanceof(obj, objType) - is.instOf, is.instanceOf, is.objInstOf, is.objectInstanceOf * is.type(val, type) - is.a * is.enumerator(val, array) - is.enum, is.inArray Object State: * is.empty(val) * is.emptyArguments(val) - is.emptyArgs, is.noArgs * is.emptyArray(val) - is.emptyArry, is.emptyAry, is.emptyArray * is.emptyArrayLike(val) - is.emptyArrLike * is.emptyString(val) - is.emptyStr * is.nonEmptyArray(val) - is.nonEmptyArry, is.nonEmptyAry * is.nonEmptyObject(val) - is.nonEmptyObj * is.emptyObject(val) - is.emptyObj * is.nonEmptyString(val) - is.nonEmptyStr Numeric Types within Number: * is.even(val) - is.evenNum, is.evenNumber * is.decimal(val) - is.decNum, is.dec * is.integer(val) - is.int * is.notANumber(val) - is.nan, is.notANum * is.odd(val) - is.oddNum, is.oddNumber Numeric Type and State: * is.positiveNumber(val) - is.pos, is.positive, is.posNum, is.positiveNum * is.negativeNumber(val) - is.neg, is.negNum, is.negativeNum, is.negativeNumber * is.negativeInteger(val) - is.negativeInt, is.negInt * is.positiveInteger(val) - is.posInt, is.positiveInt Numeric Relationship: * is.divisibleBy(val, other) - is.divisBy, is.divBy * is.greaterOrEqualTo(val, other) - is.ge, is.greaterOrEqual * is.greaterThan(val, other) - is.gt * is.lessThanOrEqualTo(val, other) - is.lessThanOrEq, is.lessThanOrEqual, is.le * is.lessThan(val, other) - is.lt * is.maximum(val, array) - is.max * is.minimum(val, array) - is.min * is.withIn(val, start, finish) - is.within * is.prettyClose(val, comp, precision) - is.closish, is.near Networking: * is.dnsAddress(val) - is.dnsAddr, is.dns * is.emailAddress(val) - is.email, is.emailAddr * is.ipv4Address(val) - is.ipv4, is.ipv4Addr * is.ipv6Address(val) - is.ipv6, is.ipv6Addr * is.ipAddress(val) - is.ip, is.ipAddr * is.hostAddress(val) - is.host = is.hostIp = is.hostAddr * is.port(val) * is.systemPort(val) - is.sysPort * is.url(val) - is.uri * is.userPort(val) Credit Cards: * is.creditCardNumber(str) - is.creditCard, is.creditCardNum * is.americanExpressCardNumber(str) - is.amexCardNum, is.amexCard * is.chinaUnionPayCardNumber(str) - is.chinaUnionPayCard, is.chinaUnion * is.dankortCardNumber(str) - is.dankortCard, is.dankort * is.dinersClubCarteBlancheCardNumber(str) - is.dinersClubCarteBlancheCard, is.dinersClubCB * is.dinersClubInternationalCardNumber(str) - is.dinersClubInternationalCard, is.dinersClubInt * is.dinersClubUSACanadaCardNumber(str) - is.dinersClubUSACanCard, is.dinersClub * is.discoverCardNumber(str) - is.discoverCard, is.discover * is.instaPaymentCardNumber(str) - is.instaPayment * is.jcbCardNumber(str) - is.jcbCard, is.jcb * is.laserCardNumber(str) - is.laserCard, is.laser * is.maestroCardNumber(str) - is.maestroCard, is.maestro * is.masterCardCardNumber - is.masterCardCard, is.masterCard * is.visaCardNumber(str) - is.visaCard, is.visa * is.visaElectronCardNumber(str) - is.visaElectronCard, is.visaElectron Personal information: * is.streetAddress(str) - is.street, is.address * is.zipCode(str) - is.zip * is.phoneNumber(str) - is.phone ## License The MIT License (MIT) Copyright (c) 2013,2014 Edmond Meinfelder Copyright (c) 2011 Enrico Marino Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ### Estraverse [](http://travis-ci.org/estools/estraverse) Estraverse ([estraverse](http://github.com/estools/estraverse)) is [ECMAScript](http://www.ecma-international.org/publications/standards/Ecma-262.htm) traversal functions from [esmangle project](http://github.com/estools/esmangle). ### Documentation You can find usage docs at [wiki page](https://github.com/estools/estraverse/wiki/Usage). ### Example Usage The following code will output all variables declared at the root of a file. ```javascript estraverse.traverse(ast, { enter: function (node, parent) { if (node.type == 'FunctionExpression' || node.type == 'FunctionDeclaration') return estraverse.VisitorOption.Skip; }, leave: function (node, parent) { if (node.type == 'VariableDeclarator') console.log(node.id.name); } }); ``` We can use `this.skip`, `this.remove` and `this.break` functions instead of using Skip, Remove and Break. ```javascript estraverse.traverse(ast, { enter: function (node) { this.break(); } }); ``` And estraverse provides `estraverse.replace` function. When returning node from `enter`/`leave`, current node is replaced with it. ```javascript result = estraverse.replace(tree, { enter: function (node) { // Replace it with replaced. if (node.type === 'Literal') return replaced; } }); ``` By passing `visitor.keys` mapping, we can extend estraverse traversing functionality. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Extending the existing traversing rules. keys: { // TargetNodeName: [ 'keys', 'containing', 'the', 'other', '**node**' ] TestExpression: ['argument'] } }); ``` By passing `visitor.fallback` option, we can control the behavior when encountering unknown nodes. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Iterating the child **nodes** of unknown nodes. fallback: 'iteration' }); ``` When `visitor.fallback` is a function, we can determine which keys to visit on each node. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Skip the `argument` property of each node fallback: function(node) { return Object.keys(node).filter(function(key) { return key !== 'argument'; }); } }); ``` ### License Copyright (C) 2012-2016 [Yusuke Suzuki](http://github.com/Constellation) (twitter: [@Constellation](http://twitter.com/Constellation)) and other contributors. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # yargs-parser [](https://travis-ci.org/yargs/yargs-parser) [](https://www.npmjs.com/package/yargs-parser) [](https://github.com/conventional-changelog/standard-version) The mighty option parser used by [yargs](https://github.com/yargs/yargs). visit the [yargs website](http://yargs.js.org/) for more examples, and thorough usage instructions. <img width="250" src="https://raw.githubusercontent.com/yargs/yargs-parser/master/yargs-logo.png"> ## Example ```sh npm i yargs-parser --save ``` ```js var argv = require('yargs-parser')(process.argv.slice(2)) console.log(argv) ``` ```sh node example.js --foo=33 --bar hello { _: [], foo: 33, bar: 'hello' } ``` _or parse a string!_ ```js var argv = require('yargs-parser')('--foo=99 --bar=33') console.log(argv) ``` ```sh { _: [], foo: 99, bar: 33 } ``` Convert an array of mixed types before passing to `yargs-parser`: ```js var parse = require('yargs-parser') parse(['-f', 11, '--zoom', 55].join(' ')) // <-- array to string parse(['-f', 11, '--zoom', 55].map(String)) // <-- array of strings ``` ## API ### require('yargs-parser')(args, opts={}) Parses command line arguments returning a simple mapping of keys and values. **expects:** * `args`: a string or array of strings representing the options to parse. * `opts`: provide a set of hints indicating how `args` should be parsed: * `opts.alias`: an object representing the set of aliases for a key: `{alias: {foo: ['f']}}`. * `opts.array`: indicate that keys should be parsed as an array: `{array: ['foo', 'bar']}`.<br> Indicate that keys should be parsed as an array and coerced to booleans / numbers:<br> `{array: [{ key: 'foo', boolean: true }, {key: 'bar', number: true}]}`. * `opts.boolean`: arguments should be parsed as booleans: `{boolean: ['x', 'y']}`. * `opts.coerce`: provide a custom synchronous function that returns a coerced value from the argument provided (or throws an error). For arrays the function is called only once for the entire array:<br> `{coerce: {foo: function (arg) {return modifiedArg}}}`. * `opts.config`: indicate a key that represents a path to a configuration file (this file will be loaded and parsed). * `opts.configObjects`: configuration objects to parse, their properties will be set as arguments:<br> `{configObjects: [{'x': 5, 'y': 33}, {'z': 44}]}`. * `opts.configuration`: provide configuration options to the yargs-parser (see: [configuration](#configuration)). * `opts.count`: indicate a key that should be used as a counter, e.g., `-vvv` = `{v: 3}`. * `opts.default`: provide default values for keys: `{default: {x: 33, y: 'hello world!'}}`. * `opts.envPrefix`: environment variables (`process.env`) with the prefix provided should be parsed. * `opts.narg`: specify that a key requires `n` arguments: `{narg: {x: 2}}`. * `opts.normalize`: `path.normalize()` will be applied to values set to this key. * `opts.number`: keys should be treated as numbers. * `opts.string`: keys should be treated as strings (even if they resemble a number `-x 33`). **returns:** * `obj`: an object representing the parsed value of `args` * `key/value`: key value pairs for each argument and their aliases. * `_`: an array representing the positional arguments. * [optional] `--`: an array with arguments after the end-of-options flag `--`. ### require('yargs-parser').detailed(args, opts={}) Parses a command line string, returning detailed information required by the yargs engine. **expects:** * `args`: a string or array of strings representing options to parse. * `opts`: provide a set of hints indicating how `args`, inputs are identical to `require('yargs-parser')(args, opts={})`. **returns:** * `argv`: an object representing the parsed value of `args` * `key/value`: key value pairs for each argument and their aliases. * `_`: an array representing the positional arguments. * [optional] `--`: an array with arguments after the end-of-options flag `--`. * `error`: populated with an error object if an exception occurred during parsing. * `aliases`: the inferred list of aliases built by combining lists in `opts.alias`. * `newAliases`: any new aliases added via camel-case expansion: * `boolean`: `{ fooBar: true }` * `defaulted`: any new argument created by `opts.default`, no aliases included. * `boolean`: `{ foo: true }` * `configuration`: given by default settings and `opts.configuration`. <a name="configuration"></a> ### Configuration The yargs-parser applies several automated transformations on the keys provided in `args`. These features can be turned on and off using the `configuration` field of `opts`. ```js var parsed = parser(['--no-dice'], { configuration: { 'boolean-negation': false } }) ``` ### short option groups * default: `true`. * key: `short-option-groups`. Should a group of short-options be treated as boolean flags? ```sh node example.js -abc { _: [], a: true, b: true, c: true } ``` _if disabled:_ ```sh node example.js -abc { _: [], abc: true } ``` ### camel-case expansion * default: `true`. * key: `camel-case-expansion`. Should hyphenated arguments be expanded into camel-case aliases? ```sh node example.js --foo-bar { _: [], 'foo-bar': true, fooBar: true } ``` _if disabled:_ ```sh node example.js --foo-bar { _: [], 'foo-bar': true } ``` ### dot-notation * default: `true` * key: `dot-notation` Should keys that contain `.` be treated as objects? ```sh node example.js --foo.bar { _: [], foo: { bar: true } } ``` _if disabled:_ ```sh node example.js --foo.bar { _: [], "foo.bar": true } ``` ### parse numbers * default: `true` * key: `parse-numbers` Should keys that look like numbers be treated as such? ```sh node example.js --foo=99.3 { _: [], foo: 99.3 } ``` _if disabled:_ ```sh node example.js --foo=99.3 { _: [], foo: "99.3" } ``` ### boolean negation * default: `true` * key: `boolean-negation` Should variables prefixed with `--no` be treated as negations? ```sh node example.js --no-foo { _: [], foo: false } ``` _if disabled:_ ```sh node example.js --no-foo { _: [], "no-foo": true } ``` ### combine arrays * default: `false` * key: `combine-arrays` Should arrays be combined when provided by both command line arguments and a configuration file. ### duplicate arguments array * default: `true` * key: `duplicate-arguments-array` Should arguments be coerced into an array when duplicated: ```sh node example.js -x 1 -x 2 { _: [], x: [1, 2] } ``` _if disabled:_ ```sh node example.js -x 1 -x 2 { _: [], x: 2 } ``` ### flatten duplicate arrays * default: `true` * key: `flatten-duplicate-arrays` Should array arguments be coerced into a single array when duplicated: ```sh node example.js -x 1 2 -x 3 4 { _: [], x: [1, 2, 3, 4] } ``` _if disabled:_ ```sh node example.js -x 1 2 -x 3 4 { _: [], x: [[1, 2], [3, 4]] } ``` ### greedy arrays * default: `true` * key: `greedy-arrays` Should arrays consume more than one positional argument following their flag. ```sh node example --arr 1 2 { _[], arr: [1, 2] } ``` _if disabled:_ ```sh node example --arr 1 2 { _[2], arr: [1] } ``` **Note: in `v18.0.0` we are considering defaulting greedy arrays to `false`.** ### nargs eats options * default: `false` * key: `nargs-eats-options` Should nargs consume dash options as well as positional arguments. ### negation prefix * default: `no-` * key: `negation-prefix` The prefix to use for negated boolean variables. ```sh node example.js --no-foo { _: [], foo: false } ``` _if set to `quux`:_ ```sh node example.js --quuxfoo { _: [], foo: false } ``` ### populate -- * default: `false`. * key: `populate--` Should unparsed flags be stored in `--` or `_`. _If disabled:_ ```sh node example.js a -b -- x y { _: [ 'a', 'x', 'y' ], b: true } ``` _If enabled:_ ```sh node example.js a -b -- x y { _: [ 'a' ], '--': [ 'x', 'y' ], b: true } ``` ### set placeholder key * default: `false`. * key: `set-placeholder-key`. Should a placeholder be added for keys not set via the corresponding CLI argument? _If disabled:_ ```sh node example.js -a 1 -c 2 { _: [], a: 1, c: 2 } ``` _If enabled:_ ```sh node example.js -a 1 -c 2 { _: [], a: 1, b: undefined, c: 2 } ``` ### halt at non-option * default: `false`. * key: `halt-at-non-option`. Should parsing stop at the first positional argument? This is similar to how e.g. `ssh` parses its command line. _If disabled:_ ```sh node example.js -a run b -x y { _: [ 'b' ], a: 'run', x: 'y' } ``` _If enabled:_ ```sh node example.js -a run b -x y { _: [ 'b', '-x', 'y' ], a: 'run' } ``` ### strip aliased * default: `false` * key: `strip-aliased` Should aliases be removed before returning results? _If disabled:_ ```sh node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1, 'test-alias': 1, testAlias: 1 } ``` _If enabled:_ ```sh node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1 } ``` ### strip dashed * default: `false` * key: `strip-dashed` Should dashed keys be removed before returning results? This option has no effect if `camel-case-expansion` is disabled. _If disabled:_ ```sh node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1 } ``` _If enabled:_ ```sh node example.js --test-field 1 { _: [], testField: 1 } ``` ### unknown options as args * default: `false` * key: `unknown-options-as-args` Should unknown options be treated like regular arguments? An unknown option is one that is not configured in `opts`. _If disabled_ ```sh node example.js --unknown-option --known-option 2 --string-option --unknown-option2 { _: [], unknownOption: true, knownOption: 2, stringOption: '', unknownOption2: true } ``` _If enabled_ ```sh node example.js --unknown-option --known-option 2 --string-option --unknown-option2 { _: ['--unknown-option'], knownOption: 2, stringOption: '--unknown-option2' } ``` ## Special Thanks The yargs project evolves from optimist and minimist. It owes its existence to a lot of James Halliday's hard work. Thanks [substack](https://github.com/substack) **beep** **boop** \o/ ## License ISC # y18n [![NPM version][npm-image]][npm-url] [![js-standard-style][standard-image]][standard-url] [](https://conventionalcommits.org) The bare-bones internationalization library used by yargs. Inspired by [i18n](https://www.npmjs.com/package/i18n). ## Examples _simple string translation:_ ```js const __ = require('y18n')().__; console.log(__('my awesome string %s', 'foo')); ``` output: `my awesome string foo` _using tagged template literals_ ```js const __ = require('y18n')().__; const str = 'foo'; console.log(__`my awesome string ${str}`); ``` output: `my awesome string foo` _pluralization support:_ ```js const __n = require('y18n')().__n; console.log(__n('one fish %s', '%d fishes %s', 2, 'foo')); ``` output: `2 fishes foo` ## Deno Example As of `v5` `y18n` supports [Deno](https://github.com/denoland/deno): ```typescript import y18n from "https://deno.land/x/y18n/deno.ts"; const __ = y18n({ locale: 'pirate', directory: './test/locales' }).__ console.info(__`Hi, ${'Ben'} ${'Coe'}!`) ``` You will need to run with `--allow-read` to load alternative locales. ## JSON Language Files The JSON language files should be stored in a `./locales` folder. File names correspond to locales, e.g., `en.json`, `pirate.json`. When strings are observed for the first time they will be added to the JSON file corresponding to the current locale. ## Methods ### require('y18n')(config) Create an instance of y18n with the config provided, options include: * `directory`: the locale directory, default `./locales`. * `updateFiles`: should newly observed strings be updated in file, default `true`. * `locale`: what locale should be used. * `fallbackToLanguage`: should fallback to a language-only file (e.g. `en.json`) be allowed if a file matching the locale does not exist (e.g. `en_US.json`), default `true`. ### y18n.\_\_(str, arg, arg, arg) Print a localized string, `%s` will be replaced with `arg`s. This function can also be used as a tag for a template literal. You can use it like this: <code>__&#96;hello ${'world'}&#96;</code>. This will be equivalent to `__('hello %s', 'world')`. ### y18n.\_\_n(singularString, pluralString, count, arg, arg, arg) Print a localized string with appropriate pluralization. If `%d` is provided in the string, the `count` will replace this placeholder. ### y18n.setLocale(str) Set the current locale being used. ### y18n.getLocale() What locale is currently being used? ### y18n.updateLocale(obj) Update the current locale with the key value pairs in `obj`. ## Supported Node.js Versions Libraries in this ecosystem make a best effort to track [Node.js' release schedule](https://nodejs.org/en/about/releases/). Here's [a post on why we think this is important](https://medium.com/the-node-js-collection/maintainers-should-consider-following-node-js-release-schedule-ab08ed4de71a). ## License ISC [npm-url]: https://npmjs.org/package/y18n [npm-image]: https://img.shields.io/npm/v/y18n.svg [standard-image]: https://img.shields.io/badge/code%20style-standard-brightgreen.svg [standard-url]: https://github.com/feross/standard long.js ======= A Long class for representing a 64 bit two's-complement integer value derived from the [Closure Library](https://github.com/google/closure-library) for stand-alone use and extended with unsigned support. [](https://github.com/dcodeIO/long.js/actions?query=workflow%3ATest) [](https://github.com/dcodeIO/long.js/actions?query=workflow%3APublish) [](https://www.npmjs.com/package/long) Background ---------- As of [ECMA-262 5th Edition](http://ecma262-5.com/ELS5_HTML.htm#Section_8.5), "all the positive and negative integers whose magnitude is no greater than 2<sup>53</sup> are representable in the Number type", which is "representing the doubleprecision 64-bit format IEEE 754 values as specified in the IEEE Standard for Binary Floating-Point Arithmetic". The [maximum safe integer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER) in JavaScript is 2<sup>53</sup>-1. Example: 2<sup>64</sup>-1 is 1844674407370955**1615** but in JavaScript it evaluates to 1844674407370955**2000**. Furthermore, bitwise operators in JavaScript "deal only with integers in the range −2<sup>31</sup> through 2<sup>31</sup>−1, inclusive, or in the range 0 through 2<sup>32</sup>−1, inclusive. These operators accept any value of the Number type but first convert each such value to one of 2<sup>32</sup> integer values." In some use cases, however, it is required to be able to reliably work with and perform bitwise operations on the full 64 bits. This is where long.js comes into play. Usage ----- The package exports an ECMAScript module with an UMD fallback. ```js import Long from "long"; var longVal = new Long(0xFFFFFFFF, 0x7FFFFFFF); console.log(longVal.toString()); ... ``` Note that mixing ESM and CommonJS is not recommended as it yield different classes with the same functionality. API --- ### Constructor * new **Long**(low: `number`, high?: `number`, unsigned?: `boolean`)<br /> Constructs a 64 bit two's-complement integer, given its low and high 32 bit values as *signed* integers. See the from* functions below for more convenient ways of constructing Longs. ### Fields * Long#**low**: `number`<br /> The low 32 bits as a signed value. * Long#**high**: `number`<br /> The high 32 bits as a signed value. * Long#**unsigned**: `boolean`<br /> Whether unsigned or not. ### Constants * Long.**ZERO**: `Long`<br /> Signed zero. * Long.**ONE**: `Long`<br /> Signed one. * Long.**NEG_ONE**: `Long`<br /> Signed negative one. * Long.**UZERO**: `Long`<br /> Unsigned zero. * Long.**UONE**: `Long`<br /> Unsigned one. * Long.**MAX_VALUE**: `Long`<br /> Maximum signed value. * Long.**MIN_VALUE**: `Long`<br /> Minimum signed value. * Long.**MAX_UNSIGNED_VALUE**: `Long`<br /> Maximum unsigned value. ### Utility * Long.**isLong**(obj: `*`): `boolean`<br /> Tests if the specified object is a Long. * Long.**fromBits**(lowBits: `number`, highBits: `number`, unsigned?: `boolean`): `Long`<br /> Returns a Long representing the 64 bit integer that comes by concatenating the given low and high bits. Each is assumed to use 32 bits. * Long.**fromBytes**(bytes: `number[]`, unsigned?: `boolean`, le?: `boolean`): `Long`<br /> Creates a Long from its byte representation. * Long.**fromBytesLE**(bytes: `number[]`, unsigned?: `boolean`): `Long`<br /> Creates a Long from its little endian byte representation. * Long.**fromBytesBE**(bytes: `number[]`, unsigned?: `boolean`): `Long`<br /> Creates a Long from its big endian byte representation. * Long.**fromInt**(value: `number`, unsigned?: `boolean`): `Long`<br /> Returns a Long representing the given 32 bit integer value. * Long.**fromNumber**(value: `number`, unsigned?: `boolean`): `Long`<br /> Returns a Long representing the given value, provided that it is a finite number. Otherwise, zero is returned. * Long.**fromString**(str: `string`, unsigned?: `boolean`, radix?: `number`)<br /> Long.**fromString**(str: `string`, radix: `number`)<br /> Returns a Long representation of the given string, written using the specified radix. * Long.**fromValue**(val: `*`, unsigned?: `boolean`): `Long`<br /> Converts the specified value to a Long using the appropriate from* function for its type. ### Methods * Long#**add**(addend: `Long | number | string`): `Long`<br /> Returns the sum of this and the specified Long. * Long#**and**(other: `Long | number | string`): `Long`<br /> Returns the bitwise AND of this Long and the specified. * Long#**compare**/**comp**(other: `Long | number | string`): `number`<br /> Compares this Long's value with the specified's. Returns `0` if they are the same, `1` if the this is greater and `-1` if the given one is greater. * Long#**divide**/**div**(divisor: `Long | number | string`): `Long`<br /> Returns this Long divided by the specified. * Long#**equals**/**eq**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value equals the specified's. * Long#**getHighBits**(): `number`<br /> Gets the high 32 bits as a signed integer. * Long#**getHighBitsUnsigned**(): `number`<br /> Gets the high 32 bits as an unsigned integer. * Long#**getLowBits**(): `number`<br /> Gets the low 32 bits as a signed integer. * Long#**getLowBitsUnsigned**(): `number`<br /> Gets the low 32 bits as an unsigned integer. * Long#**getNumBitsAbs**(): `number`<br /> Gets the number of bits needed to represent the absolute value of this Long. * Long#**greaterThan**/**gt**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value is greater than the specified's. * Long#**greaterThanOrEqual**/**gte**/**ge**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value is greater than or equal the specified's. * Long#**isEven**(): `boolean`<br /> Tests if this Long's value is even. * Long#**isNegative**(): `boolean`<br /> Tests if this Long's value is negative. * Long#**isOdd**(): `boolean`<br /> Tests if this Long's value is odd. * Long#**isPositive**(): `boolean`<br /> Tests if this Long's value is positive. * Long#**isZero**/**eqz**(): `boolean`<br /> Tests if this Long's value equals zero. * Long#**lessThan**/**lt**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value is less than the specified's. * Long#**lessThanOrEqual**/**lte**/**le**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value is less than or equal the specified's. * Long#**modulo**/**mod**/**rem**(divisor: `Long | number | string`): `Long`<br /> Returns this Long modulo the specified. * Long#**multiply**/**mul**(multiplier: `Long | number | string`): `Long`<br /> Returns the product of this and the specified Long. * Long#**negate**/**neg**(): `Long`<br /> Negates this Long's value. * Long#**not**(): `Long`<br /> Returns the bitwise NOT of this Long. * Long#**notEquals**/**neq**/**ne**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value differs from the specified's. * Long#**or**(other: `Long | number | string`): `Long`<br /> Returns the bitwise OR of this Long and the specified. * Long#**shiftLeft**/**shl**(numBits: `Long | number | string`): `Long`<br /> Returns this Long with bits shifted to the left by the given amount. * Long#**shiftRight**/**shr**(numBits: `Long | number | string`): `Long`<br /> Returns this Long with bits arithmetically shifted to the right by the given amount. * Long#**shiftRightUnsigned**/**shru**/**shr_u**(numBits: `Long | number | string`): `Long`<br /> Returns this Long with bits logically shifted to the right by the given amount. * Long#**rotateLeft**/**rotl**(numBits: `Long | number | string`): `Long`<br /> Returns this Long with bits rotated to the left by the given amount. * Long#**rotateRight**/**rotr**(numBits: `Long | number | string`): `Long`<br /> Returns this Long with bits rotated to the right by the given amount. * Long#**subtract**/**sub**(subtrahend: `Long | number | string`): `Long`<br /> Returns the difference of this and the specified Long. * Long#**toBytes**(le?: `boolean`): `number[]`<br /> Converts this Long to its byte representation. * Long#**toBytesLE**(): `number[]`<br /> Converts this Long to its little endian byte representation. * Long#**toBytesBE**(): `number[]`<br /> Converts this Long to its big endian byte representation. * Long#**toInt**(): `number`<br /> Converts the Long to a 32 bit integer, assuming it is a 32 bit integer. * Long#**toNumber**(): `number`<br /> Converts the Long to a the nearest floating-point representation of this value (double, 53 bit mantissa). * Long#**toSigned**(): `Long`<br /> Converts this Long to signed. * Long#**toString**(radix?: `number`): `string`<br /> Converts the Long to a string written in the specified radix. * Long#**toUnsigned**(): `Long`<br /> Converts this Long to unsigned. * Long#**xor**(other: `Long | number | string`): `Long`<br /> Returns the bitwise XOR of this Long and the given one. WebAssembly support ------------------- [WebAssembly](http://webassembly.org) supports 64-bit integer arithmetic out of the box, hence a [tiny WebAssembly module](./wasm.wat) is used to compute operations like multiplication, division and remainder more efficiently (slow operations like division are around twice as fast), falling back to floating point based computations in JavaScript where WebAssembly is not yet supported, e.g., in older versions of node. Building -------- Running the [tests](./tests): ``` $> npm test ``` # Punycode.js [](https://travis-ci.org/bestiejs/punycode.js) [](https://codecov.io/gh/bestiejs/punycode.js) [](https://gemnasium.com/bestiejs/punycode.js) Punycode.js is a robust Punycode converter that fully complies to [RFC 3492](https://tools.ietf.org/html/rfc3492) and [RFC 5891](https://tools.ietf.org/html/rfc5891). This JavaScript library is the result of comparing, optimizing and documenting different open-source implementations of the Punycode algorithm: * [The C example code from RFC 3492](https://tools.ietf.org/html/rfc3492#appendix-C) * [`punycode.c` by _Markus W. Scherer_ (IBM)](http://opensource.apple.com/source/ICU/ICU-400.42/icuSources/common/punycode.c) * [`punycode.c` by _Ben Noordhuis_](https://github.com/bnoordhuis/punycode/blob/master/punycode.c) * [JavaScript implementation by _some_](http://stackoverflow.com/questions/183485/can-anyone-recommend-a-good-free-javascript-for-punycode-to-unicode-conversion/301287#301287) * [`punycode.js` by _Ben Noordhuis_](https://github.com/joyent/node/blob/426298c8c1c0d5b5224ac3658c41e7c2a3fe9377/lib/punycode.js) (note: [not fully compliant](https://github.com/joyent/node/issues/2072)) This project was [bundled](https://github.com/joyent/node/blob/master/lib/punycode.js) with Node.js from [v0.6.2+](https://github.com/joyent/node/compare/975f1930b1...61e796decc) until [v7](https://github.com/nodejs/node/pull/7941) (soft-deprecated). The current version supports recent versions of Node.js only. It provides a CommonJS module and an ES6 module. For the old version that offers the same functionality with broader support, including Rhino, Ringo, Narwhal, and web browsers, see [v1.4.1](https://github.com/bestiejs/punycode.js/releases/tag/v1.4.1). ## Installation Via [npm](https://www.npmjs.com/): ```bash npm install punycode --save ``` In [Node.js](https://nodejs.org/): ```js const punycode = require('punycode'); ``` ## API ### `punycode.decode(string)` Converts a Punycode string of ASCII symbols to a string of Unicode symbols. ```js // decode domain name parts punycode.decode('maana-pta'); // 'mañana' punycode.decode('--dqo34k'); // '☃-⌘' ``` ### `punycode.encode(string)` Converts a string of Unicode symbols to a Punycode string of ASCII symbols. ```js // encode domain name parts punycode.encode('mañana'); // 'maana-pta' punycode.encode('☃-⌘'); // '--dqo34k' ``` ### `punycode.toUnicode(input)` Converts a Punycode string representing a domain name or an email address to Unicode. Only the Punycoded parts of the input will be converted, i.e. it doesn’t matter if you call it on a string that has already been converted to Unicode. ```js // decode domain names punycode.toUnicode('xn--maana-pta.com'); // → 'mañana.com' punycode.toUnicode('xn----dqo34k.com'); // → '☃-⌘.com' // decode email addresses punycode.toUnicode('джумла@xn--p-8sbkgc5ag7bhce.xn--ba-lmcq'); // → 'джумла@джpумлатест.bрфa' ``` ### `punycode.toASCII(input)` Converts a lowercased Unicode string representing a domain name or an email address to Punycode. Only the non-ASCII parts of the input will be converted, i.e. it doesn’t matter if you call it with a domain that’s already in ASCII. ```js // encode domain names punycode.toASCII('mañana.com'); // → 'xn--maana-pta.com' punycode.toASCII('☃-⌘.com'); // → 'xn----dqo34k.com' // encode email addresses punycode.toASCII('джумла@джpумлатест.bрфa'); // → 'джумла@xn--p-8sbkgc5ag7bhce.xn--ba-lmcq' ``` ### `punycode.ucs2` #### `punycode.ucs2.decode(string)` Creates an array containing the numeric code point values of each Unicode symbol in the string. While [JavaScript uses UCS-2 internally](https://mathiasbynens.be/notes/javascript-encoding), this function will convert a pair of surrogate halves (each of which UCS-2 exposes as separate characters) into a single code point, matching UTF-16. ```js punycode.ucs2.decode('abc'); // → [0x61, 0x62, 0x63] // surrogate pair for U+1D306 TETRAGRAM FOR CENTRE: punycode.ucs2.decode('\uD834\uDF06'); // → [0x1D306] ``` #### `punycode.ucs2.encode(codePoints)` Creates a string based on an array of numeric code point values. ```js punycode.ucs2.encode([0x61, 0x62, 0x63]); // → 'abc' punycode.ucs2.encode([0x1D306]); // → '\uD834\uDF06' ``` ### `punycode.version` A string representing the current Punycode.js version number. ## Author | [](https://twitter.com/mathias "Follow @mathias on Twitter") | |---| | [Mathias Bynens](https://mathiasbynens.be/) | ## License Punycode.js is available under the [MIT](https://mths.be/mit) license. # defer-to-connect > The safe way to handle the `connect` socket event [](https://coveralls.io/github/szmarczak/defer-to-connect?branch=master) Once you receive the socket, it may be already connected (or disconnected).<br> To avoid checking that, use `defer-to-connect`. It'll do that for you. ## Usage ```js const deferToConnect = require('defer-to-connect'); deferToConnect(socket, () => { console.log('Connected!'); }); ``` ## API ### deferToConnect(socket, connectListener) Calls `connectListener()` when connected. ### deferToConnect(socket, listeners) #### listeners An object representing `connect`, `secureConnect` and `close` properties. Calls `connect()` when the socket is connected.<br> Calls `secureConnect()` when the socket is securely connected.<br> Calls `close()` when the socket is destroyed. ## License MIT # fast-json-stable-stringify Deterministic `JSON.stringify()` - a faster version of [@substack](https://github.com/substack)'s json-stable-strigify without [jsonify](https://github.com/substack/jsonify). You can also pass in a custom comparison function. [](https://travis-ci.org/epoberezkin/fast-json-stable-stringify) [](https://coveralls.io/github/epoberezkin/fast-json-stable-stringify?branch=master) # example ``` js var stringify = require('fast-json-stable-stringify'); var obj = { c: 8, b: [{z:6,y:5,x:4},7], a: 3 }; console.log(stringify(obj)); ``` output: ``` {"a":3,"b":[{"x":4,"y":5,"z":6},7],"c":8} ``` # methods ``` js var stringify = require('fast-json-stable-stringify') ``` ## var str = stringify(obj, opts) Return a deterministic stringified string `str` from the object `obj`. ## options ### cmp If `opts` is given, you can supply an `opts.cmp` to have a custom comparison function for object keys. Your function `opts.cmp` is called with these parameters: ``` js opts.cmp({ key: akey, value: avalue }, { key: bkey, value: bvalue }) ``` For example, to sort on the object key names in reverse order you could write: ``` js var stringify = require('fast-json-stable-stringify'); var obj = { c: 8, b: [{z:6,y:5,x:4},7], a: 3 }; var s = stringify(obj, function (a, b) { return a.key < b.key ? 1 : -1; }); console.log(s); ``` which results in the output string: ``` {"c":8,"b":[{"z":6,"y":5,"x":4},7],"a":3} ``` Or if you wanted to sort on the object values in reverse order, you could write: ``` var stringify = require('fast-json-stable-stringify'); var obj = { d: 6, c: 5, b: [{z:3,y:2,x:1},9], a: 10 }; var s = stringify(obj, function (a, b) { return a.value < b.value ? 1 : -1; }); console.log(s); ``` which outputs: ``` {"d":6,"c":5,"b":[{"z":3,"y":2,"x":1},9],"a":10} ``` ### cycles Pass `true` in `opts.cycles` to stringify circular property as `__cycle__` - the result will not be a valid JSON string in this case. TypeError will be thrown in case of circular object without this option. # install With [npm](https://npmjs.org) do: ``` npm install fast-json-stable-stringify ``` # benchmark To run benchmark (requires Node.js 6+): ``` node benchmark ``` Results: ``` fast-json-stable-stringify x 17,189 ops/sec ±1.43% (83 runs sampled) json-stable-stringify x 13,634 ops/sec ±1.39% (85 runs sampled) fast-stable-stringify x 20,212 ops/sec ±1.20% (84 runs sampled) faster-stable-stringify x 15,549 ops/sec ±1.12% (84 runs sampled) The fastest is fast-stable-stringify ``` ## Enterprise support fast-json-stable-stringify package is a part of [Tidelift enterprise subscription](https://tidelift.com/subscription/pkg/npm-fast-json-stable-stringify?utm_source=npm-fast-json-stable-stringify&utm_medium=referral&utm_campaign=enterprise&utm_term=repo) - it provides a centralised commercial support to open-source software users, in addition to the support provided by software maintainers. ## Security contact To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. Please do NOT report security vulnerability via GitHub issues. # license [MIT](https://github.com/epoberezkin/fast-json-stable-stringify/blob/master/LICENSE) # eslint-visitor-keys [](https://www.npmjs.com/package/eslint-visitor-keys) [](http://www.npmtrends.com/eslint-visitor-keys) [](https://travis-ci.org/eslint/eslint-visitor-keys) [](https://david-dm.org/eslint/eslint-visitor-keys) Constants and utilities about visitor keys to traverse AST. ## 💿 Installation Use [npm] to install. ```bash $ npm install eslint-visitor-keys ``` ### Requirements - [Node.js] 4.0.0 or later. ## 📖 Usage ```js const evk = require("eslint-visitor-keys") ``` ### evk.KEYS > type: `{ [type: string]: string[] | undefined }` Visitor keys. This keys are frozen. This is an object. Keys are the type of [ESTree] nodes. Their values are an array of property names which have child nodes. For example: ``` console.log(evk.KEYS.AssignmentExpression) // → ["left", "right"] ``` ### evk.getKeys(node) > type: `(node: object) => string[]` Get the visitor keys of a given AST node. This is similar to `Object.keys(node)` of ES Standard, but some keys are excluded: `parent`, `leadingComments`, `trailingComments`, and names which start with `_`. This will be used to traverse unknown nodes. For example: ``` const node = { type: "AssignmentExpression", left: { type: "Identifier", name: "foo" }, right: { type: "Literal", value: 0 } } console.log(evk.getKeys(node)) // → ["type", "left", "right"] ``` ### evk.unionWith(additionalKeys) > type: `(additionalKeys: object) => { [type: string]: string[] | undefined }` Make the union set with `evk.KEYS` and the given keys. - The order of keys is, `additionalKeys` is at first, then `evk.KEYS` is concatenated after that. - It removes duplicated keys as keeping the first one. For example: ``` console.log(evk.unionWith({ MethodDefinition: ["decorators"] })) // → { ..., MethodDefinition: ["decorators", "key", "value"], ... } ``` ## 📰 Change log See [GitHub releases](https://github.com/eslint/eslint-visitor-keys/releases). ## 🍻 Contributing Welcome. See [ESLint contribution guidelines](https://eslint.org/docs/developer-guide/contributing/). ### Development commands - `npm test` runs tests and measures code coverage. - `npm run lint` checks source codes with ESLint. - `npm run coverage` opens the code coverage report of the previous test with your default browser. - `npm run release` publishes this package to [npm] registory. [npm]: https://www.npmjs.com/ [Node.js]: https://nodejs.org/en/ [ESTree]: https://github.com/estree/estree # pretty-format Stringify any JavaScript value. - Serialize built-in JavaScript types. - Serialize application-specific data types with built-in or user-defined plugins. ## Installation ```sh $ yarn add pretty-format ``` ## Usage ```js const {format: prettyFormat} = require('pretty-format'); // CommonJS ``` ```js import {format as prettyFormat} from 'pretty-format'; // ES2015 modules ``` ```js const val = {object: {}}; val.circularReference = val; val[Symbol('foo')] = 'foo'; val.map = new Map([['prop', 'value']]); val.array = [-0, Infinity, NaN]; console.log(prettyFormat(val)); /* Object { "array": Array [ -0, Infinity, NaN, ], "circularReference": [Circular], "map": Map { "prop" => "value", }, "object": Object {}, Symbol(foo): "foo", } */ ``` ## Usage with options ```js function onClick() {} console.log(prettyFormat(onClick)); /* [Function onClick] */ const options = { printFunctionName: false, }; console.log(prettyFormat(onClick, options)); /* [Function] */ ``` <!-- prettier-ignore --> | key | type | default | description | | :-------------------- | :-------- | :--------- | :------------------------------------------------------ | | `callToJSON` | `boolean` | `true` | call `toJSON` method (if it exists) on objects | | `escapeRegex` | `boolean` | `false` | escape special characters in regular expressions | | `escapeString` | `boolean` | `true` | escape special characters in strings | | `highlight` | `boolean` | `false` | highlight syntax with colors in terminal (some plugins) | | `indent` | `number` | `2` | spaces in each level of indentation | | `maxDepth` | `number` | `Infinity` | levels to print in arrays, objects, elements, and so on | | `min` | `boolean` | `false` | minimize added space: no indentation nor line breaks | | `plugins` | `array` | `[]` | plugins to serialize application-specific data types | | `printBasicPrototype` | `boolean` | `false` | print the prototype for plain objects and arrays | | `printFunctionName` | `boolean` | `true` | include or omit the name of a function | | `theme` | `object` | | colors to highlight syntax in terminal | Property values of `theme` are from [ansi-styles colors](https://github.com/chalk/ansi-styles#colors) ```js const DEFAULT_THEME = { comment: 'gray', content: 'reset', prop: 'yellow', tag: 'cyan', value: 'green', }; ``` ## Usage with plugins The `pretty-format` package provides some built-in plugins, including: - `ReactElement` for elements from `react` - `ReactTestComponent` for test objects from `react-test-renderer` ```js // CommonJS const React = require('react'); const renderer = require('react-test-renderer'); const {format: prettyFormat, plugins} = require('pretty-format'); const {ReactElement, ReactTestComponent} = plugins; ``` ```js // ES2015 modules and destructuring assignment import React from 'react'; import renderer from 'react-test-renderer'; import {plugins, format as prettyFormat} from 'pretty-format'; const {ReactElement, ReactTestComponent} = plugins; ``` ```js const onClick = () => {}; const element = React.createElement('button', {onClick}, 'Hello World'); const formatted1 = prettyFormat(element, { plugins: [ReactElement], printFunctionName: false, }); const formatted2 = prettyFormat(renderer.create(element).toJSON(), { plugins: [ReactTestComponent], printFunctionName: false, }); /* <button onClick=[Function] > Hello World </button> */ ``` ## Usage in Jest For snapshot tests, Jest uses `pretty-format` with options that include some of its built-in plugins. For this purpose, plugins are also known as **snapshot serializers**. To serialize application-specific data types, you can add modules to `devDependencies` of a project, and then: In an **individual** test file, you can add a module as follows. It precedes any modules from Jest configuration. ```js import serializer from 'my-serializer-module'; expect.addSnapshotSerializer(serializer); // tests which have `expect(value).toMatchSnapshot()` assertions ``` For **all** test files, you can specify modules in Jest configuration. They precede built-in plugins for React, HTML, and Immutable.js data types. For example, in a `package.json` file: ```json { "jest": { "snapshotSerializers": ["my-serializer-module"] } } ``` ## Writing plugins A plugin is a JavaScript object. If `options` has a `plugins` array: for the first plugin whose `test(val)` method returns a truthy value, then `prettyFormat(val, options)` returns the result from either: - `serialize(val, …)` method of the **improved** interface (available in **version 21** or later) - `print(val, …)` method of the **original** interface (if plugin does not have `serialize` method) ### test Write `test` so it can receive `val` argument of any type. To serialize **objects** which have certain properties, then a guarded expression like `val != null && …` or more concise `val && …` prevents the following errors: - `TypeError: Cannot read property 'whatever' of null` - `TypeError: Cannot read property 'whatever' of undefined` For example, `test` method of built-in `ReactElement` plugin: ```js const elementSymbol = Symbol.for('react.element'); const test = val => val && val.$$typeof === elementSymbol; ``` Pay attention to efficiency in `test` because `pretty-format` calls it often. ### serialize The **improved** interface is available in **version 21** or later. Write `serialize` to return a string, given the arguments: - `val` which “passed the test” - unchanging `config` object: derived from `options` - current `indentation` string: concatenate to `indent` from `config` - current `depth` number: compare to `maxDepth` from `config` - current `refs` array: find circular references in objects - `printer` callback function: serialize children ### config <!-- prettier-ignore --> | key | type | description | | :------------------ | :-------- | :------------------------------------------------------ | | `callToJSON` | `boolean` | call `toJSON` method (if it exists) on objects | | `colors` | `Object` | escape codes for colors to highlight syntax | | `escapeRegex` | `boolean` | escape special characters in regular expressions | | `escapeString` | `boolean` | escape special characters in strings | | `indent` | `string` | spaces in each level of indentation | | `maxDepth` | `number` | levels to print in arrays, objects, elements, and so on | | `min` | `boolean` | minimize added space: no indentation nor line breaks | | `plugins` | `array` | plugins to serialize application-specific data types | | `printFunctionName` | `boolean` | include or omit the name of a function | | `spacingInner` | `strong` | spacing to separate items in a list | | `spacingOuter` | `strong` | spacing to enclose a list of items | Each property of `colors` in `config` corresponds to a property of `theme` in `options`: - the key is the same (for example, `tag`) - the value in `colors` is a object with `open` and `close` properties whose values are escape codes from [ansi-styles](https://github.com/chalk/ansi-styles) for the color value in `theme` (for example, `'cyan'`) Some properties in `config` are derived from `min` in `options`: - `spacingInner` and `spacingOuter` are **newline** if `min` is `false` - `spacingInner` is **space** and `spacingOuter` is **empty string** if `min` is `true` ### Example of serialize and test This plugin is a pattern you can apply to serialize composite data types. Side note: `pretty-format` does not need a plugin to serialize arrays. ```js // We reused more code when we factored out a function for child items // that is independent of depth, name, and enclosing punctuation (see below). const SEPARATOR = ','; function serializeItems(items, config, indentation, depth, refs, printer) { if (items.length === 0) { return ''; } const indentationItems = indentation + config.indent; return ( config.spacingOuter + items .map( item => indentationItems + printer(item, config, indentationItems, depth, refs), // callback ) .join(SEPARATOR + config.spacingInner) + (config.min ? '' : SEPARATOR) + // following the last item config.spacingOuter + indentation ); } const plugin = { test(val) { return Array.isArray(val); }, serialize(array, config, indentation, depth, refs, printer) { const name = array.constructor.name; return ++depth > config.maxDepth ? '[' + name + ']' : (config.min ? '' : name + ' ') + '[' + serializeItems(array, config, indentation, depth, refs, printer) + ']'; }, }; ``` ```js const val = { filter: 'completed', items: [ { text: 'Write test', completed: true, }, { text: 'Write serialize', completed: true, }, ], }; ``` ```js console.log( prettyFormat(val, { plugins: [plugin], }), ); /* Object { "filter": "completed", "items": Array [ Object { "completed": true, "text": "Write test", }, Object { "completed": true, "text": "Write serialize", }, ], } */ ``` ```js console.log( prettyFormat(val, { indent: 4, plugins: [plugin], }), ); /* Object { "filter": "completed", "items": Array [ Object { "completed": true, "text": "Write test", }, Object { "completed": true, "text": "Write serialize", }, ], } */ ``` ```js console.log( prettyFormat(val, { maxDepth: 1, plugins: [plugin], }), ); /* Object { "filter": "completed", "items": [Array], } */ ``` ```js console.log( prettyFormat(val, { min: true, plugins: [plugin], }), ); /* {"filter": "completed", "items": [{"completed": true, "text": "Write test"}, {"completed": true, "text": "Write serialize"}]} */ ``` ### print The **original** interface is adequate for plugins: - that **do not** depend on options other than `highlight` or `min` - that **do not** depend on `depth` or `refs` in recursive traversal, and - if values either - do **not** require indentation, or - do **not** occur as children of JavaScript data structures (for example, array) Write `print` to return a string, given the arguments: - `val` which “passed the test” - current `printer(valChild)` callback function: serialize children - current `indenter(lines)` callback function: indent lines at the next level - unchanging `config` object: derived from `options` - unchanging `colors` object: derived from `options` The 3 properties of `config` are `min` in `options` and: - `spacing` and `edgeSpacing` are **newline** if `min` is `false` - `spacing` is **space** and `edgeSpacing` is **empty string** if `min` is `true` Each property of `colors` corresponds to a property of `theme` in `options`: - the key is the same (for example, `tag`) - the value in `colors` is a object with `open` and `close` properties whose values are escape codes from [ansi-styles](https://github.com/chalk/ansi-styles) for the color value in `theme` (for example, `'cyan'`) ### Example of print and test This plugin prints functions with the **number of named arguments** excluding rest argument. ```js const plugin = { print(val) { return `[Function ${val.name || 'anonymous'} ${val.length}]`; }, test(val) { return typeof val === 'function'; }, }; ``` ```js const val = { onClick(event) {}, render() {}, }; prettyFormat(val, { plugins: [plugin], }); /* Object { "onClick": [Function onClick 1], "render": [Function render 0], } */ prettyFormat(val); /* Object { "onClick": [Function onClick], "render": [Function render], } */ ``` This plugin **ignores** the `printFunctionName` option. That limitation of the original `print` interface is a reason to use the improved `serialize` interface, described above. ```js prettyFormat(val, { plugins: [pluginOld], printFunctionName: false, }); /* Object { "onClick": [Function onClick 1], "render": [Function render 0], } */ prettyFormat(val, { printFunctionName: false, }); /* Object { "onClick": [Function], "render": [Function], } */ ``` # brace-expansion [Brace expansion](https://www.gnu.org/software/bash/manual/html_node/Brace-Expansion.html), as known from sh/bash, in JavaScript. [](http://travis-ci.org/juliangruber/brace-expansion) [](https://www.npmjs.org/package/brace-expansion) [](https://greenkeeper.io/) [](https://ci.testling.com/juliangruber/brace-expansion) ## Example ```js var expand = require('brace-expansion'); expand('file-{a,b,c}.jpg') // => ['file-a.jpg', 'file-b.jpg', 'file-c.jpg'] expand('-v{,,}') // => ['-v', '-v', '-v'] expand('file{0..2}.jpg') // => ['file0.jpg', 'file1.jpg', 'file2.jpg'] expand('file-{a..c}.jpg') // => ['file-a.jpg', 'file-b.jpg', 'file-c.jpg'] expand('file{2..0}.jpg') // => ['file2.jpg', 'file1.jpg', 'file0.jpg'] expand('file{0..4..2}.jpg') // => ['file0.jpg', 'file2.jpg', 'file4.jpg'] expand('file-{a..e..2}.jpg') // => ['file-a.jpg', 'file-c.jpg', 'file-e.jpg'] expand('file{00..10..5}.jpg') // => ['file00.jpg', 'file05.jpg', 'file10.jpg'] expand('{{A..C},{a..c}}') // => ['A', 'B', 'C', 'a', 'b', 'c'] expand('ppp{,config,oe{,conf}}') // => ['ppp', 'pppconfig', 'pppoe', 'pppoeconf'] ``` ## API ```js var expand = require('brace-expansion'); ``` ### var expanded = expand(str) Return an array of all possible and valid expansions of `str`. If none are found, `[str]` is returned. Valid expansions are: ```js /^(.*,)+(.+)?$/ // {a,b,...} ``` A comma separated list of options, like `{a,b}` or `{a,{b,c}}` or `{,a,}`. ```js /^-?\d+\.\.-?\d+(\.\.-?\d+)?$/ // {x..y[..incr]} ``` A numeric sequence from `x` to `y` inclusive, with optional increment. If `x` or `y` start with a leading `0`, all the numbers will be padded to have equal length. Negative numbers and backwards iteration work too. ```js /^-?\d+\.\.-?\d+(\.\.-?\d+)?$/ // {x..y[..incr]} ``` An alphabetic sequence from `x` to `y` inclusive, with optional increment. `x` and `y` must be exactly one character, and if given, `incr` must be a number. For compatibility reasons, the string `${` is not eligible for brace expansion. ## Installation With [npm](https://npmjs.org) do: ```bash npm install brace-expansion ``` ## Contributors - [Julian Gruber](https://github.com/juliangruber) - [Isaac Z. Schlueter](https://github.com/isaacs) ## Sponsors This module is proudly supported by my [Sponsors](https://github.com/juliangruber/sponsors)! Do you want to support modules like this to improve their quality, stability and weigh in on new features? Then please consider donating to my [Patreon](https://www.patreon.com/juliangruber). Not sure how much of my modules you're using? Try [feross/thanks](https://github.com/feross/thanks)! ## License (MIT) Copyright (c) 2013 Julian Gruber &lt;julian@juliangruber.com&gt; Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # tar-stream tar-stream is a streaming tar parser and generator and nothing else. It is streams2 and operates purely using streams which means you can easily extract/parse tarballs without ever hitting the file system. Note that you still need to gunzip your data if you have a `.tar.gz`. We recommend using [gunzip-maybe](https://github.com/mafintosh/gunzip-maybe) in conjunction with this. ``` npm install tar-stream ``` [](http://travis-ci.org/mafintosh/tar-stream) [](http://opensource.org/licenses/MIT) ## Usage tar-stream exposes two streams, [pack](https://github.com/mafintosh/tar-stream#packing) which creates tarballs and [extract](https://github.com/mafintosh/tar-stream#extracting) which extracts tarballs. To [modify an existing tarball](https://github.com/mafintosh/tar-stream#modifying-existing-tarballs) use both. It implementes USTAR with additional support for pax extended headers. It should be compatible with all popular tar distributions out there (gnutar, bsdtar etc) ## Related If you want to pack/unpack directories on the file system check out [tar-fs](https://github.com/mafintosh/tar-fs) which provides file system bindings to this module. ## Packing To create a pack stream use `tar.pack()` and call `pack.entry(header, [callback])` to add tar entries. ``` js var tar = require('tar-stream') var pack = tar.pack() // pack is a streams2 stream // add a file called my-test.txt with the content "Hello World!" pack.entry({ name: 'my-test.txt' }, 'Hello World!') // add a file called my-stream-test.txt from a stream var entry = pack.entry({ name: 'my-stream-test.txt', size: 11 }, function(err) { // the stream was added // no more entries pack.finalize() }) entry.write('hello') entry.write(' ') entry.write('world') entry.end() // pipe the pack stream somewhere pack.pipe(process.stdout) ``` ## Extracting To extract a stream use `tar.extract()` and listen for `extract.on('entry', (header, stream, next) )` ``` js var extract = tar.extract() extract.on('entry', function(header, stream, next) { // header is the tar header // stream is the content body (might be an empty stream) // call next when you are done with this entry stream.on('end', function() { next() // ready for next entry }) stream.resume() // just auto drain the stream }) extract.on('finish', function() { // all entries read }) pack.pipe(extract) ``` The tar archive is streamed sequentially, meaning you **must** drain each entry's stream as you get them or else the main extract stream will receive backpressure and stop reading. ## Headers The header object using in `entry` should contain the following properties. Most of these values can be found by stat'ing a file. ``` js { name: 'path/to/this/entry.txt', size: 1314, // entry size. defaults to 0 mode: 0o644, // entry mode. defaults to to 0o755 for dirs and 0o644 otherwise mtime: new Date(), // last modified date for entry. defaults to now. type: 'file', // type of entry. defaults to file. can be: // file | link | symlink | directory | block-device // character-device | fifo | contiguous-file linkname: 'path', // linked file name uid: 0, // uid of entry owner. defaults to 0 gid: 0, // gid of entry owner. defaults to 0 uname: 'maf', // uname of entry owner. defaults to null gname: 'staff', // gname of entry owner. defaults to null devmajor: 0, // device major version. defaults to 0 devminor: 0 // device minor version. defaults to 0 } ``` ## Modifying existing tarballs Using tar-stream it is easy to rewrite paths / change modes etc in an existing tarball. ``` js var extract = tar.extract() var pack = tar.pack() var path = require('path') extract.on('entry', function(header, stream, callback) { // let's prefix all names with 'tmp' header.name = path.join('tmp', header.name) // write the new entry to the pack stream stream.pipe(pack.entry(header, callback)) }) extract.on('finish', function() { // all entries done - lets finalize it pack.finalize() }) // pipe the old tarball to the extractor oldTarballStream.pipe(extract) // pipe the new tarball the another stream pack.pipe(newTarballStream) ``` ## Saving tarball to fs ``` js var fs = require('fs') var tar = require('tar-stream') var pack = tar.pack() // pack is a streams2 stream var path = 'YourTarBall.tar' var yourTarball = fs.createWriteStream(path) // add a file called YourFile.txt with the content "Hello World!" pack.entry({name: 'YourFile.txt'}, 'Hello World!', function (err) { if (err) throw err pack.finalize() }) // pipe the pack stream to your file pack.pipe(yourTarball) yourTarball.on('close', function () { console.log(path + ' has been written') fs.stat(path, function(err, stats) { if (err) throw err console.log(stats) console.log('Got file info successfully!') }) }) ``` ## Performance [See tar-fs for a performance comparison with node-tar](https://github.com/mafintosh/tar-fs/blob/master/README.md#performance) # License MIT # Can I cache this? [](https://travis-ci.org/kornelski/http-cache-semantics) `CachePolicy` tells when responses can be reused from a cache, taking into account [HTTP RFC 7234](http://httpwg.org/specs/rfc7234.html) rules for user agents and shared caches. It also implements [RFC 5861](https://tools.ietf.org/html/rfc5861), implementing `stale-if-error` and `stale-while-revalidate`. It's aware of many tricky details such as the `Vary` header, proxy revalidation, and authenticated responses. ## Usage Cacheability of an HTTP response depends on how it was requested, so both `request` and `response` are required to create the policy. ```js const policy = new CachePolicy(request, response, options); if (!policy.storable()) { // throw the response away, it's not usable at all return; } // Cache the data AND the policy object in your cache // (this is pseudocode, roll your own cache (lru-cache package works)) letsPretendThisIsSomeCache.set( request.url, { policy, response }, policy.timeToLive() ); ``` ```js // And later, when you receive a new request: const { policy, response } = letsPretendThisIsSomeCache.get(newRequest.url); // It's not enough that it exists in the cache, it has to match the new request, too: if (policy && policy.satisfiesWithoutRevalidation(newRequest)) { // OK, the previous response can be used to respond to the `newRequest`. // Response headers have to be updated, e.g. to add Age and remove uncacheable headers. response.headers = policy.responseHeaders(); return response; } ``` It may be surprising, but it's not enough for an HTTP response to be [fresh](#yo-fresh) to satisfy a request. It may need to match request headers specified in `Vary`. Even a matching fresh response may still not be usable if the new request restricted cacheability, etc. The key method is `satisfiesWithoutRevalidation(newRequest)`, which checks whether the `newRequest` is compatible with the original request and whether all caching conditions are met. ### Constructor options Request and response must have a `headers` property with all header names in lower case. `url`, `status` and `method` are optional (defaults are any URL, status `200`, and `GET` method). ```js const request = { url: '/', method: 'GET', headers: { accept: '*/*', }, }; const response = { status: 200, headers: { 'cache-control': 'public, max-age=7234', }, }; const options = { shared: true, cacheHeuristic: 0.1, immutableMinTimeToLive: 24 * 3600 * 1000, // 24h ignoreCargoCult: false, }; ``` If `options.shared` is `true` (default), then the response is evaluated from a perspective of a shared cache (i.e. `private` is not cacheable and `s-maxage` is respected). If `options.shared` is `false`, then the response is evaluated from a perspective of a single-user cache (i.e. `private` is cacheable and `s-maxage` is ignored). `shared: true` is recommended for HTTP clients. `options.cacheHeuristic` is a fraction of response's age that is used as a fallback cache duration. The default is 0.1 (10%), e.g. if a file hasn't been modified for 100 days, it'll be cached for 100\*0.1 = 10 days. `options.immutableMinTimeToLive` is a number of milliseconds to assume as the default time to cache responses with `Cache-Control: immutable`. Note that [per RFC](http://httpwg.org/http-extensions/immutable.html) these can become stale, so `max-age` still overrides the default. If `options.ignoreCargoCult` is true, common anti-cache directives will be completely ignored if the non-standard `pre-check` and `post-check` directives are present. These two useless directives are most commonly found in bad StackOverflow answers and PHP's "session limiter" defaults. ### `storable()` Returns `true` if the response can be stored in a cache. If it's `false` then you MUST NOT store either the request or the response. ### `satisfiesWithoutRevalidation(newRequest)` This is the most important method. Use this method to check whether the cached response is still fresh in the context of the new request. If it returns `true`, then the given `request` matches the original response this cache policy has been created with, and the response can be reused without contacting the server. Note that the old response can't be returned without being updated, see `responseHeaders()`. If it returns `false`, then the response may not be matching at all (e.g. it's for a different URL or method), or may require to be refreshed first (see `revalidationHeaders()`). ### `responseHeaders()` Returns updated, filtered set of response headers to return to clients receiving the cached response. This function is necessary, because proxies MUST always remove hop-by-hop headers (such as `TE` and `Connection`) and update response's `Age` to avoid doubling cache time. ```js cachedResponse.headers = cachePolicy.responseHeaders(cachedResponse); ``` ### `timeToLive()` Returns approximate time in _milliseconds_ until the response becomes stale (i.e. not fresh). After that time (when `timeToLive() <= 0`) the response might not be usable without revalidation. However, there are exceptions, e.g. a client can explicitly allow stale responses, so always check with `satisfiesWithoutRevalidation()`. `stale-if-error` and `stale-while-revalidate` extend the time to live of the cache, that can still be used if stale. ### `toObject()`/`fromObject(json)` Chances are you'll want to store the `CachePolicy` object along with the cached response. `obj = policy.toObject()` gives a plain JSON-serializable object. `policy = CachePolicy.fromObject(obj)` creates an instance from it. ### Refreshing stale cache (revalidation) When a cached response has expired, it can be made fresh again by making a request to the origin server. The server may respond with status 304 (Not Modified) without sending the response body again, saving bandwidth. The following methods help perform the update efficiently and correctly. #### `revalidationHeaders(newRequest)` Returns updated, filtered set of request headers to send to the origin server to check if the cached response can be reused. These headers allow the origin server to return status 304 indicating the response is still fresh. All headers unrelated to caching are passed through as-is. Use this method when updating cache from the origin server. ```js updateRequest.headers = cachePolicy.revalidationHeaders(updateRequest); ``` #### `revalidatedPolicy(revalidationRequest, revalidationResponse)` Use this method to update the cache after receiving a new response from the origin server. It returns an object with two keys: - `policy` — A new `CachePolicy` with HTTP headers updated from `revalidationResponse`. You can always replace the old cached `CachePolicy` with the new one. - `modified` — Boolean indicating whether the response body has changed. - If `false`, then a valid 304 Not Modified response has been received, and you can reuse the old cached response body. This is also affected by `stale-if-error`. - If `true`, you should use new response's body (if present), or make another request to the origin server without any conditional headers (i.e. don't use `revalidationHeaders()` this time) to get the new resource. ```js // When serving requests from cache: const { oldPolicy, oldResponse } = letsPretendThisIsSomeCache.get( newRequest.url ); if (!oldPolicy.satisfiesWithoutRevalidation(newRequest)) { // Change the request to ask the origin server if the cached response can be used newRequest.headers = oldPolicy.revalidationHeaders(newRequest); // Send request to the origin server. The server may respond with status 304 const newResponse = await makeRequest(newRequest); // Create updated policy and combined response from the old and new data const { policy, modified } = oldPolicy.revalidatedPolicy( newRequest, newResponse ); const response = modified ? newResponse : oldResponse; // Update the cache with the newer/fresher response letsPretendThisIsSomeCache.set( newRequest.url, { policy, response }, policy.timeToLive() ); // And proceed returning cached response as usual response.headers = policy.responseHeaders(); return response; } ``` # Yo, FRESH  ## Used by - [ImageOptim API](https://imageoptim.com/api), [make-fetch-happen](https://github.com/zkat/make-fetch-happen), [cacheable-request](https://www.npmjs.com/package/cacheable-request) ([got](https://www.npmjs.com/package/got)), [npm/registry-fetch](https://github.com/npm/registry-fetch), [etc.](https://github.com/kornelski/http-cache-semantics/network/dependents) ## Implemented - `Cache-Control` response header with all the quirks. - `Expires` with check for bad clocks. - `Pragma` response header. - `Age` response header. - `Vary` response header. - Default cacheability of statuses and methods. - Requests for stale data. - Filtering of hop-by-hop headers. - Basic revalidation request - `stale-if-error` ## Unimplemented - Merging of range requests, `If-Range` (but correctly supports them as non-cacheable) - Revalidation of multiple representations ### Trusting server `Date` Per the RFC, the cache should take into account the time between server-supplied `Date` and the time it received the response. The RFC-mandated behavior creates two problems: * Servers with incorrectly set timezone may add several hours to cache age (or more, if the clock is completely wrong). * Even reasonably correct clocks may be off by a couple of seconds, breaking `max-age=1` trick (which is useful for reverse proxies on high-traffic servers). Previous versions of this library had an option to ignore the server date if it was "too inaccurate". To support the `max-age=1` trick the library also has to ignore dates that pretty accurate. There's no point of having an option to trust dates that are only a bit inaccurate, so this library won't trust any server dates. `max-age` will be interpreted from the time the response has been received, not from when it has been sent. This will affect only [RFC 1149 networks](https://tools.ietf.org/html/rfc1149). # Node.js ABI [](https://travis-ci.org/lgeiger/node-abi) [](https://greenkeeper.io/) Get the Node ABI for a given target and runtime, and vice versa. ## Installation ``` npm install node-abi ``` ## Usage ```javascript const nodeAbi = require('node-abi') nodeAbi.getAbi('7.2.0', 'node') // '51' nodeAbi.getAbi('1.4.10', 'electron') // '50' nodeAbi.getTarget('51', 'node') // '7.2.0' nodeAbi.getTarget('50', 'electron') // '1.4.15' nodeAbi.allTargets // [ // { runtime: 'node', target: '0.10.48', abi: '11', lts: false }, // { runtime: 'node', target: '0.12.17', abi: '14', lts: false }, // { runtime: 'node', target: '4.6.1', abi: '46', lts: true }, // { runtime: 'node', target: '5.12.0', abi: '47', lts: false }, // { runtime: 'node', target: '6.9.4', abi: '48', lts: true }, // { runtime: 'node', target: '7.4.0', abi: '51', lts: false }, // { runtime: 'electron', target: '1.0.2', abi: '47', lts: false }, // { runtime: 'electron', target: '1.2.8', abi: '48', lts: false }, // { runtime: 'electron', target: '1.3.13', abi: '49', lts: false }, // { runtime: 'electron', target: '1.4.15', abi: '50', lts: false } // ] nodeAbi.deprecatedTargets nodeAbi.supportedTargets nodeAbi.additionalTargets nodeAbi.futureTargets // ... ``` ## References - https://github.com/lgeiger/electron-abi - https://nodejs.org/en/download/releases/ - https://github.com/nodejs/Release # prebuild-install > **A command line tool to easily install prebuilt binaries for multiple versions of Node.js & Electron on a specific platform.** > By default it downloads prebuilt binaries from a GitHub release. [](https://www.npmjs.com/package/prebuild-install)  [](https://github.com/prebuild/prebuild-install/actions/workflows/test.yml) [](https://david-dm.org/prebuild/prebuild-install) [](http://standardjs.com/) ## Note **Instead of [`prebuild`](https://github.com/prebuild/prebuild) paired with [`prebuild-install`](https://github.com/prebuild/prebuild-install), we recommend [`prebuildify`](https://github.com/prebuild/prebuildify) paired with [`node-gyp-build`](https://github.com/prebuild/node-gyp-build).** With `prebuildify`, all prebuilt binaries are shipped inside the package that is published to npm, which means there's no need for a separate download step like you find in `prebuild`. The irony of this approach is that it is faster to download all prebuilt binaries for every platform when they are bundled than it is to download a single prebuilt binary as an install script. Upsides: 1. No extra download step, making it more reliable and faster to install. 2. Supports changing runtime versions locally and using the same install between Node.js and Electron. Reinstalling or rebuilding is not necessary, as all prebuilt binaries are in the npm tarball and the correct one is simply picked on runtime. 3. The `node-gyp-build` runtime dependency is dependency-free and will remain so out of principle, because introducing dependencies would negate the shorter install time. 4. Prebuilt binaries work even if npm install scripts are disabled. 5. The npm package checksum covers prebuilt binaries too. Downsides: 1. The installed npm package is larger on disk. Using [Node-API](https://nodejs.org/api/n-api.html) alleviates this because Node-API binaries are runtime-agnostic and forward-compatible. 2. Publishing is mildly more complicated, because `npm publish` must be done after compiling and fetching prebuilt binaries (typically in CI). ## Usage Use [`prebuild`](https://github.com/prebuild/prebuild) to create and upload prebuilt binaries. Then change your package.json install script to: ```json { "scripts": { "install": "prebuild-install || node-gyp rebuild" } } ``` ### Help ``` prebuild-install [options] --download -d [url] (download prebuilds, no url means github) --target -t version (version to install for) --runtime -r runtime (Node runtime [node, napi or electron] to build or install for, default is node) --path -p path (make a prebuild-install here) --token -T gh-token (github token for private repos) --arch arch (target CPU architecture, see Node OS module docs, default is current arch) --platform platform (target platform, see Node OS module docs, default is current platform) --tag-prefix <prefix> (github tag prefix, default is "v") --build-from-source (skip prebuild download) --verbose (log verbosely) --libc (use provided libc rather than system default) --debug (set Debug or Release configuration) --version (print prebuild-install version and exit) ``` When `prebuild-install` is run via an `npm` script, options `--build-from-source`, `--debug`, `--download`, `--target`, `--runtime`, `--arch` and `--platform` may be passed through via arguments given to the `npm` command. Alternatively you can set environment variables `npm_config_build_from_source=true`, `npm_config_platform`, `npm_config_arch`, `npm_config_target` and `npm_config_runtime`. ### Private Repositories `prebuild-install` supports downloading prebuilds from private GitHub repositories using the `-T <github-token>`: ``` $ prebuild-install -T <github-token> ``` If you don't want to use the token on cli you can put it in `~/.prebuild-installrc`: ``` token=<github-token> ``` Alternatively you can specify it in the `prebuild-install_token` environment variable. Note that using a GitHub token uses the API to resolve the correct release meaning that you are subject to the ([GitHub Rate Limit](https://developer.github.com/v3/rate_limit/)). ### Create GitHub Token To create a token: - Go to [this page](https://github.com/settings/tokens) - Click the `Generate new token` button - Give the token a name and click the `Generate token` button, see below  The default scopes should be fine. ### Custom binaries The end user can override binary download location through environment variables in their .npmrc file. The variable needs to meet the mask `% your package name %_binary_host` or `% your package name %_binary_host_mirror`. For example: ``` leveldown_binary_host=http://overriden-host.com/overriden-path ``` Note that the package version subpath and file name will still be appended. So if you are installing `leveldown@1.2.3` the resulting url will be: ``` http://overriden-host.com/overriden-path/v1.2.3/leveldown-v1.2.3-node-v57-win32-x64.tar.gz ``` #### Local prebuilds If you want to use prebuilds from your local filesystem, you can use the `% your package name %_local_prebuilds` .npmrc variable to set a path to the folder containing prebuilds. For example: ``` leveldown_local_prebuilds=/path/to/prebuilds ``` This option will look directly in that folder for bundles created with `prebuild`, for example: ``` /path/to/prebuilds/leveldown-v1.2.3-node-v57-win32-x64.tar.gz ``` Non-absolute paths resolve relative to the directory of the package invoking prebuild-install, e.g. for nested dependencies. ### Cache All prebuilt binaries are cached to minimize traffic. So first `prebuild-install` picks binaries from the cache and if no binary could be found, it will be downloaded. Depending on the environment, the cache folder is determined in the following order: - `${npm_config_cache}/_prebuilds` - `${APP_DATA}/npm-cache/_prebuilds` - `${HOME}/.npm/_prebuilds` ## License MIT # simple-get [![travis][travis-image]][travis-url] [![npm][npm-image]][npm-url] [![downloads][downloads-image]][downloads-url] [![javascript style guide][standard-image]][standard-url] [travis-image]: https://img.shields.io/travis/feross/simple-get/master.svg [travis-url]: https://travis-ci.org/feross/simple-get [npm-image]: https://img.shields.io/npm/v/simple-get.svg [npm-url]: https://npmjs.org/package/simple-get [downloads-image]: https://img.shields.io/npm/dm/simple-get.svg [downloads-url]: https://npmjs.org/package/simple-get [standard-image]: https://img.shields.io/badge/code_style-standard-brightgreen.svg [standard-url]: https://standardjs.com ### Simplest way to make http get requests ## features This module is the lightest possible wrapper on top of node.js `http`, but supporting these essential features: - follows redirects - automatically handles gzip/deflate responses - supports HTTPS - supports specifying a timeout - supports convenience `url` key so there's no need to use `url.parse` on the url when specifying options - composes well with npm packages for features like cookies, proxies, form data, & OAuth All this in < 100 lines of code. ## install ``` npm install simple-get ``` ## usage Note, all these examples also work in the browser with [browserify](http://browserify.org/). ### simple GET request Doesn't get easier than this: ```js const get = require('simple-get') get('http://example.com', function (err, res) { if (err) throw err console.log(res.statusCode) // 200 res.pipe(process.stdout) // `res` is a stream }) ``` ### even simpler GET request If you just want the data, and don't want to deal with streams: ```js const get = require('simple-get') get.concat('http://example.com', function (err, res, data) { if (err) throw err console.log(res.statusCode) // 200 console.log(data) // Buffer('this is the server response') }) ``` ### POST, PUT, PATCH, HEAD, DELETE support For `POST`, call `get.post` or use option `{ method: 'POST' }`. ```js const get = require('simple-get') const opts = { url: 'http://example.com', body: 'this is the POST body' } get.post(opts, function (err, res) { if (err) throw err res.pipe(process.stdout) // `res` is a stream }) ``` #### A more complex example: ```js const get = require('simple-get') get({ url: 'http://example.com', method: 'POST', body: 'this is the POST body', // simple-get accepts all options that node.js `http` accepts // See: http://nodejs.org/api/http.html#http_http_request_options_callback headers: { 'user-agent': 'my cool app' } }, function (err, res) { if (err) throw err // All properties/methods from http.IncomingResponse are available, // even if a gunzip/inflate transform stream was returned. // See: http://nodejs.org/api/http.html#http_http_incomingmessage res.setTimeout(10000) console.log(res.headers) res.on('data', function (chunk) { // `chunk` is the decoded response, after it's been gunzipped or inflated // (if applicable) console.log('got a chunk of the response: ' + chunk) })) }) ``` ### JSON You can serialize/deserialize request and response with JSON: ```js const get = require('simple-get') const opts = { method: 'POST', url: 'http://example.com', body: { key: 'value' }, json: true } get.concat(opts, function (err, res, data) { if (err) throw err console.log(data.key) // `data` is an object }) ``` ### Timeout You can set a timeout (in milliseconds) on the request with the `timeout` option. If the request takes longer than `timeout` to complete, then the entire request will fail with an `Error`. ```js const get = require('simple-get') const opts = { url: 'http://example.com', timeout: 2000 // 2 second timeout } get(opts, function (err, res) {}) ``` ### One Quick Tip It's a good idea to set the `'user-agent'` header so the provider can more easily see how their resource is used. ```js const get = require('simple-get') const pkg = require('./package.json') get('http://example.com', { headers: { 'user-agent': `my-module/${pkg.version} (https://github.com/username/my-module)` } }) ``` ### Proxies You can use the [`tunnel`](https://github.com/koichik/node-tunnel) module with the `agent` option to work with proxies: ```js const get = require('simple-get') const tunnel = require('tunnel') const opts = { url: 'http://example.com', agent: tunnel.httpOverHttp({ proxy: { host: 'localhost' } }) } get(opts, function (err, res) {}) ``` ### Cookies You can use the [`cookie`](https://github.com/jshttp/cookie) module to include cookies in a request: ```js const get = require('simple-get') const cookie = require('cookie') const opts = { url: 'http://example.com', headers: { cookie: cookie.serialize('foo', 'bar') } } get(opts, function (err, res) {}) ``` ### Form data You can use the [`form-data`](https://github.com/form-data/form-data) module to create POST request with form data: ```js const fs = require('fs') const get = require('simple-get') const FormData = require('form-data') const form = new FormData() form.append('my_file', fs.createReadStream('/foo/bar.jpg')) const opts = { url: 'http://example.com', body: form } get.post(opts, function (err, res) {}) ``` #### Or, include `application/x-www-form-urlencoded` form data manually: ```js const get = require('simple-get') const opts = { url: 'http://example.com', form: { key: 'value' } } get.post(opts, function (err, res) {}) ``` ### Specifically disallowing redirects ```js const get = require('simple-get') const opts = { url: 'http://example.com/will-redirect-elsewhere', followRedirects: false } // res.statusCode will be 301, no error thrown get(opts, function (err, res) {}) ``` ### OAuth You can use the [`oauth-1.0a`](https://github.com/ddo/oauth-1.0a) module to create a signed OAuth request: ```js const get = require('simple-get') const crypto = require('crypto') const OAuth = require('oauth-1.0a') const oauth = OAuth({ consumer: { key: process.env.CONSUMER_KEY, secret: process.env.CONSUMER_SECRET }, signature_method: 'HMAC-SHA1', hash_function: (baseString, key) => crypto.createHmac('sha1', key).update(baseString).digest('base64') }) const token = { key: process.env.ACCESS_TOKEN, secret: process.env.ACCESS_TOKEN_SECRET } const url = 'https://api.twitter.com/1.1/statuses/home_timeline.json' const opts = { url: url, headers: oauth.toHeader(oauth.authorize({url, method: 'GET'}, token)), json: true } get(opts, function (err, res) {}) ``` ### Throttle requests You can use [limiter](https://github.com/jhurliman/node-rate-limiter) to throttle requests. This is useful when calling an API that is rate limited. ```js const simpleGet = require('simple-get') const RateLimiter = require('limiter').RateLimiter const limiter = new RateLimiter(1, 'second') const get = (opts, cb) => limiter.removeTokens(1, () => simpleGet(opts, cb)) get.concat = (opts, cb) => limiter.removeTokens(1, () => simpleGet.concat(opts, cb)) var opts = { url: 'http://example.com' } get.concat(opts, processResult) get.concat(opts, processResult) function processResult (err, res, data) { if (err) throw err console.log(data.toString()) } ``` ## license MIT. Copyright (c) [Feross Aboukhadijeh](http://feross.org). tcp-port-used ============= A simple Node.js module to check if a TCP port is currently in use. It returns a deferred promise from the q library. ## Installation npm install tcp-port-used ## Examples To check a port's state: var tcpPortUsed = require('tcp-port-used'); tcpPortUsed.check(44201, '127.0.0.1') .then(function(inUse) { console.log('Port 44201 usage: '+inUse); }, function(err) { console.error('Error on check:', err.message); }); To wait until a port on localhost is available: tcpPortUsed.waitUntilFree(44203, 500, 4000) .then(function() { console.log('Port 44203 is now free.'); }, function(err) { console.log('Error:', err.message); }); To wait until a port on a host is available: tcpPortUsed.waitUntilFreeOnHost(44203, 'some.host.com', 500, 4000) .then(function() { console.log('Port 44203 on some.host.com is now free.'); }, function(err) { console.log('Error:', err.message); }); To wait until a port on localhost is accepting connections: tcpPortUsed.waitUntilUsed(44204, 500, 4000) .then(function() { console.log('Port 44204 is now in use.'); }, function(err) { console.log('Error:', err.message); }); To wait until a port on a host is accepting connections: tcpPortUsed.waitUntilUsedOnHost(44204, 'some.host.com', 500, 4000) .then(function() { console.log('Port 44204 on some.host.com is now in use.'); }, function(err) { console.log('Error:', err.message); }); To wait until a port on a host is in specific state: var inUse = true; // wait until the port is in use tcpPortUsed.waitForStatus(44204, 'some.host.com', inUse, 500, 4000) .then(function() { console.log('Port 44204 on some.host.com is now in use.'); }, function(err) { console.log('Error:', err.message); }); ## API ### check(port [, host]) Checks if a TCP port is in use by attempting to connect to the port on host. If no host is specified, the module uses '127.0.0.1' (localhost). When the promise is resolved, there is a parameter `inUse`, when true means the port is in use and false means the port is free. **Parameters:** * **Number|Object** *port* The port you are curious to see if available. If an object, must contain all the parameters as properties. * **String** *host* The host name or IP address of the host. Default, if not defined: '127.0.0.1' **Returns:** **Object** A deferred promise from the q module. ### waitUntilFree(port [, retryTimeMs] [, timeOutMs]) Returns a deferred promise and fulfills it only when the localhost socket is free. Will retry on an interval specified in retryTimeMs until the timeout. If not defined the retryTime is 200 ms and the timeout is 2000 ms. **Parameters:** * **Number|Object** *port* a valid TCP port number. If an object must contain all the parameters as properties. * **Number** *[retryTimeMs]* the retry interval in milliseconds - defaultis is 100ms. * **Number** *[timeOutMs]* the amount of time to wait until port is free. Default 300ms. **Returns:** **Object** A deferred promise from the q module. ### waitUntilFreeOnHost(port [, host] [, retryTimeMs] [, timeOutMs]) Returns a deferred promise and fulfills it only when the localhost socket is free. Will retry on an interval specified in retryTimeMs until the timeout. If not defined the retryTime is 200 ms and the timeout is 2000 ms. If the host is not defined, the modules uses the default '127.0.0.1'. **Parameters:** * **Number|Object** *port* a valid TCP port number. If an object, must contain all the parameters as properties. * **String** *host* The host name or IP address of the host. Default, if not defined: '127.0.0.1' * **Number** *[retryTimeMs]* the retry interval in milliseconds - defaultis is 100ms. * **Number** *[timeOutMs]* the amount of time to wait until port is free. Default 300ms. **Returns:** **Object** A deferred promise from the q module. ### waitUntilUsed(port [, retryTimeMs] [, timeOutMs]) Returns a deferred promise and fulfills it only when the socket is accepting connections. Will retry on an interval specified in retryTimeMs until the timeout. If the host is not defined the retryTime is 200 ms and the timeout is 2000 ms. **Parameters:** * **Number|Object** *port* a valid TCP port number. If an object, must contain all the parameters as properties. * **Number** *[retryTimeMs]* the retry interval in milliseconds - defaultis is 100ms. * **Number** *[timeOutMs]* the amount of time to wait until port is free. Default 300ms. **Returns:** **Object** A deferred promise from the q module. ### waitUntilUsedOnHost(port [, host] [, retryTimeMs] [, timeOutMs]) Returns a deferred promise and fulfills it only when the socket is accepting connections. Will retry on an interval specified in retryTimeMs until the timeout. If not defined the retryTime is 200 ms and the timeout is 2000 ms. If the host is not defined the module uses the default '127.0.0.1'. **Parameters:** * **Number|Object** *port* a valid TCP port number. If an object, must contain all the parameters as properties. * **String** *host* The host name or IP address of the host. Default, if not defined: '127.0.0.1' * **Number** *[retryTimeMs]* the retry interval in milliseconds - defaultis is 100ms. * **Number** *[timeOutMs]* the amount of time to wait until port is free. Default 300ms. **Returns:** **Object** A deferred promise from the q module. ### waitForStatus(port, host, status [, retryTimeMs] [, timeOutMs]) Waits until the port on host matches the boolean status in terms of use. If the status is true, the promise defers until the port is in use. If the status is false the promise defers until the port is free. If the host is undefined or null, the module uses the default '127.0.0.1'. Also, if not defined the retryTime is 200 ms and the timeout is 2000 ms. **Parameters:** * **Number** *port* a valid TCP port number. If an object, must contain all the parameters as properties. * **String** *host* The host name or IP address of the host. Default, if not defined: '127.0.0.1' * **Boolean** *status* A boolean describing the condition to wait for in terms of "in use." True indicates wait until the port is in use. False indicates wait until the port is free. * **Number** *[retryTimeMs]* the retry interval in milliseconds - defaultis is 100ms. * **Number** *[timeOutMs]* the amount of time to wait until port is free. Default 300ms. **Returns:** **Object** A deferred promise from the q module. ## License The MIT License (MIT) Copyright (c) 2013 jut-io Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # once Only call a function once. ## usage ```javascript var once = require('once') function load (file, cb) { cb = once(cb) loader.load('file') loader.once('load', cb) loader.once('error', cb) } ``` Or add to the Function.prototype in a responsible way: ```javascript // only has to be done once require('once').proto() function load (file, cb) { cb = cb.once() loader.load('file') loader.once('load', cb) loader.once('error', cb) } ``` Ironically, the prototype feature makes this module twice as complicated as necessary. To check whether you function has been called, use `fn.called`. Once the function is called for the first time the return value of the original function is saved in `fn.value` and subsequent calls will continue to return this value. ```javascript var once = require('once') function load (cb) { cb = once(cb) var stream = createStream() stream.once('data', cb) stream.once('end', function () { if (!cb.called) cb(new Error('not found')) }) } ``` ## `once.strict(func)` Throw an error if the function is called twice. Some functions are expected to be called only once. Using `once` for them would potentially hide logical errors. In the example below, the `greet` function has to call the callback only once: ```javascript function greet (name, cb) { // return is missing from the if statement // when no name is passed, the callback is called twice if (!name) cb('Hello anonymous') cb('Hello ' + name) } function log (msg) { console.log(msg) } // this will print 'Hello anonymous' but the logical error will be missed greet(null, once(msg)) // once.strict will print 'Hello anonymous' and throw an error when the callback will be called the second time greet(null, once.strict(msg)) ``` # inflight Add callbacks to requests in flight to avoid async duplication ## USAGE ```javascript var inflight = require('inflight') // some request that does some stuff function req(key, callback) { // key is any random string. like a url or filename or whatever. // // will return either a falsey value, indicating that the // request for this key is already in flight, or a new callback // which when called will call all callbacks passed to inflightk // with the same key callback = inflight(key, callback) // If we got a falsey value back, then there's already a req going if (!callback) return // this is where you'd fetch the url or whatever // callback is also once()-ified, so it can safely be assigned // to multiple events etc. First call wins. setTimeout(function() { callback(null, key) }, 100) } // only assigns a single setTimeout // when it dings, all cbs get called req('foo', cb1) req('foo', cb2) req('foo', cb3) req('foo', cb4) ``` <p align="center"> <a href="https://assemblyscript.org" target="_blank" rel="noopener"><img width="100" src="https://avatars1.githubusercontent.com/u/28916798?s=200&v=4" alt="AssemblyScript logo"></a> </p> <p align="center"> <a href="https://github.com/AssemblyScript/assemblyscript/actions?query=workflow%3ATest"><img src="https://img.shields.io/github/workflow/status/AssemblyScript/assemblyscript/Test/master?label=test&logo=github" alt="Test status" /></a> <a href="https://github.com/AssemblyScript/assemblyscript/actions?query=workflow%3APublish"><img src="https://img.shields.io/github/workflow/status/AssemblyScript/assemblyscript/Publish/master?label=publish&logo=github" alt="Publish status" /></a> <a href="https://www.npmjs.com/package/assemblyscript"><img src="https://img.shields.io/npm/v/assemblyscript.svg?label=compiler&color=007acc&logo=npm" alt="npm compiler version" /></a> <a href="https://www.npmjs.com/package/@assemblyscript/loader"><img src="https://img.shields.io/npm/v/@assemblyscript/loader.svg?label=loader&color=007acc&logo=npm" alt="npm loader version" /></a> <a href="https://discord.gg/assemblyscript"><img src="https://img.shields.io/discord/721472913886281818.svg?label=&logo=discord&logoColor=ffffff&color=7389D8&labelColor=6A7EC2" alt="Discord online" /></a> </p> <p align="justify"><strong>AssemblyScript</strong> compiles a strict variant of <a href="http://www.typescriptlang.org">TypeScript</a> (basically JavaScript with types) to <a href="http://webassembly.org">WebAssembly</a> using <a href="https://github.com/WebAssembly/binaryen">Binaryen</a>. It generates lean and mean WebAssembly modules while being just an <code>npm install</code> away.</p> <h3 align="center"> <a href="https://assemblyscript.org">About</a> &nbsp;·&nbsp; <a href="https://assemblyscript.org/introduction.html">Introduction</a> &nbsp;·&nbsp; <a href="https://assemblyscript.org/quick-start.html">Quick&nbsp;start</a> &nbsp;·&nbsp; <a href="https://assemblyscript.org/examples.html">Examples</a> &nbsp;·&nbsp; <a href="https://assemblyscript.org/development.html">Development&nbsp;instructions</a> </h3> <br> <h2 align="center">Contributors</h2> <p align="center"> <a href="https://assemblyscript.org/#contributors"><img src="https://assemblyscript.org/contributors.svg" alt="Contributor logos" width="720" /></a> </p> <h2 align="center">Thanks to our sponsors!</h2> <p align="justify">Most of the core team members and most contributors do this open source work in their free time. If you use AssemblyScript for a serious task or plan to do so, and you'd like us to invest more time on it, <a href="https://opencollective.com/assemblyscript/donate" target="_blank" rel="noopener">please donate</a> to our <a href="https://opencollective.com/assemblyscript" target="_blank" rel="noopener">OpenCollective</a>. By sponsoring this project, your logo will show up below. Thank you so much for your support!</p> <p align="center"> <a href="https://assemblyscript.org/#sponsors"><img src="https://assemblyscript.org/sponsors.svg" alt="Sponsor logos" width="720" /></a> </p> node-fetch ========== [![npm version][npm-image]][npm-url] [![build status][travis-image]][travis-url] [![coverage status][codecov-image]][codecov-url] [![install size][install-size-image]][install-size-url] [![Discord][discord-image]][discord-url] A light-weight module that brings `window.fetch` to Node.js (We are looking for [v2 maintainers and collaborators](https://github.com/bitinn/node-fetch/issues/567)) [![Backers][opencollective-image]][opencollective-url] <!-- TOC --> - [Motivation](#motivation) - [Features](#features) - [Difference from client-side fetch](#difference-from-client-side-fetch) - [Installation](#installation) - [Loading and configuring the module](#loading-and-configuring-the-module) - [Common Usage](#common-usage) - [Plain text or HTML](#plain-text-or-html) - [JSON](#json) - [Simple Post](#simple-post) - [Post with JSON](#post-with-json) - [Post with form parameters](#post-with-form-parameters) - [Handling exceptions](#handling-exceptions) - [Handling client and server errors](#handling-client-and-server-errors) - [Advanced Usage](#advanced-usage) - [Streams](#streams) - [Buffer](#buffer) - [Accessing Headers and other Meta data](#accessing-headers-and-other-meta-data) - [Extract Set-Cookie Header](#extract-set-cookie-header) - [Post data using a file stream](#post-data-using-a-file-stream) - [Post with form-data (detect multipart)](#post-with-form-data-detect-multipart) - [Request cancellation with AbortSignal](#request-cancellation-with-abortsignal) - [API](#api) - [fetch(url[, options])](#fetchurl-options) - [Options](#options) - [Class: Request](#class-request) - [Class: Response](#class-response) - [Class: Headers](#class-headers) - [Interface: Body](#interface-body) - [Class: FetchError](#class-fetcherror) - [License](#license) - [Acknowledgement](#acknowledgement) <!-- /TOC --> ## Motivation Instead of implementing `XMLHttpRequest` in Node.js to run browser-specific [Fetch polyfill](https://github.com/github/fetch), why not go from native `http` to `fetch` API directly? Hence, `node-fetch`, minimal code for a `window.fetch` compatible API on Node.js runtime. See Matt Andrews' [isomorphic-fetch](https://github.com/matthew-andrews/isomorphic-fetch) or Leonardo Quixada's [cross-fetch](https://github.com/lquixada/cross-fetch) for isomorphic usage (exports `node-fetch` for server-side, `whatwg-fetch` for client-side). ## Features - Stay consistent with `window.fetch` API. - Make conscious trade-off when following [WHATWG fetch spec][whatwg-fetch] and [stream spec](https://streams.spec.whatwg.org/) implementation details, document known differences. - Use native promise but allow substituting it with [insert your favorite promise library]. - Use native Node streams for body on both request and response. - Decode content encoding (gzip/deflate) properly and convert string output (such as `res.text()` and `res.json()`) to UTF-8 automatically. - Useful extensions such as timeout, redirect limit, response size limit, [explicit errors](ERROR-HANDLING.md) for troubleshooting. ## Difference from client-side fetch - See [Known Differences](LIMITS.md) for details. - If you happen to use a missing feature that `window.fetch` offers, feel free to open an issue. - Pull requests are welcomed too! ## Installation Current stable release (`2.x`) ```sh $ npm install node-fetch ``` ## Loading and configuring the module We suggest you load the module via `require` until the stabilization of ES modules in node: ```js const fetch = require('node-fetch'); ``` If you are using a Promise library other than native, set it through `fetch.Promise`: ```js const Bluebird = require('bluebird'); fetch.Promise = Bluebird; ``` ## Common Usage NOTE: The documentation below is up-to-date with `2.x` releases; see the [`1.x` readme](https://github.com/bitinn/node-fetch/blob/1.x/README.md), [changelog](https://github.com/bitinn/node-fetch/blob/1.x/CHANGELOG.md) and [2.x upgrade guide](UPGRADE-GUIDE.md) for the differences. #### Plain text or HTML ```js fetch('https://github.com/') .then(res => res.text()) .then(body => console.log(body)); ``` #### JSON ```js fetch('https://api.github.com/users/github') .then(res => res.json()) .then(json => console.log(json)); ``` #### Simple Post ```js fetch('https://httpbin.org/post', { method: 'POST', body: 'a=1' }) .then(res => res.json()) // expecting a json response .then(json => console.log(json)); ``` #### Post with JSON ```js const body = { a: 1 }; fetch('https://httpbin.org/post', { method: 'post', body: JSON.stringify(body), headers: { 'Content-Type': 'application/json' }, }) .then(res => res.json()) .then(json => console.log(json)); ``` #### Post with form parameters `URLSearchParams` is available in Node.js as of v7.5.0. See [official documentation](https://nodejs.org/api/url.html#url_class_urlsearchparams) for more usage methods. NOTE: The `Content-Type` header is only set automatically to `x-www-form-urlencoded` when an instance of `URLSearchParams` is given as such: ```js const { URLSearchParams } = require('url'); const params = new URLSearchParams(); params.append('a', 1); fetch('https://httpbin.org/post', { method: 'POST', body: params }) .then(res => res.json()) .then(json => console.log(json)); ``` #### Handling exceptions NOTE: 3xx-5xx responses are *NOT* exceptions and should be handled in `then()`; see the next section for more information. Adding a catch to the fetch promise chain will catch *all* exceptions, such as errors originating from node core libraries, network errors and operational errors, which are instances of FetchError. See the [error handling document](ERROR-HANDLING.md) for more details. ```js fetch('https://domain.invalid/') .catch(err => console.error(err)); ``` #### Handling client and server errors It is common to create a helper function to check that the response contains no client (4xx) or server (5xx) error responses: ```js function checkStatus(res) { if (res.ok) { // res.status >= 200 && res.status < 300 return res; } else { throw MyCustomError(res.statusText); } } fetch('https://httpbin.org/status/400') .then(checkStatus) .then(res => console.log('will not get here...')) ``` ## Advanced Usage #### Streams The "Node.js way" is to use streams when possible: ```js fetch('https://assets-cdn.github.com/images/modules/logos_page/Octocat.png') .then(res => { const dest = fs.createWriteStream('./octocat.png'); res.body.pipe(dest); }); ``` #### Buffer If you prefer to cache binary data in full, use buffer(). (NOTE: `buffer()` is a `node-fetch`-only API) ```js const fileType = require('file-type'); fetch('https://assets-cdn.github.com/images/modules/logos_page/Octocat.png') .then(res => res.buffer()) .then(buffer => fileType(buffer)) .then(type => { /* ... */ }); ``` #### Accessing Headers and other Meta data ```js fetch('https://github.com/') .then(res => { console.log(res.ok); console.log(res.status); console.log(res.statusText); console.log(res.headers.raw()); console.log(res.headers.get('content-type')); }); ``` #### Extract Set-Cookie Header Unlike browsers, you can access raw `Set-Cookie` headers manually using `Headers.raw()`. This is a `node-fetch` only API. ```js fetch(url).then(res => { // returns an array of values, instead of a string of comma-separated values console.log(res.headers.raw()['set-cookie']); }); ``` #### Post data using a file stream ```js const { createReadStream } = require('fs'); const stream = createReadStream('input.txt'); fetch('https://httpbin.org/post', { method: 'POST', body: stream }) .then(res => res.json()) .then(json => console.log(json)); ``` #### Post with form-data (detect multipart) ```js const FormData = require('form-data'); const form = new FormData(); form.append('a', 1); fetch('https://httpbin.org/post', { method: 'POST', body: form }) .then(res => res.json()) .then(json => console.log(json)); // OR, using custom headers // NOTE: getHeaders() is non-standard API const form = new FormData(); form.append('a', 1); const options = { method: 'POST', body: form, headers: form.getHeaders() } fetch('https://httpbin.org/post', options) .then(res => res.json()) .then(json => console.log(json)); ``` #### Request cancellation with AbortSignal > NOTE: You may cancel streamed requests only on Node >= v8.0.0 You may cancel requests with `AbortController`. A suggested implementation is [`abort-controller`](https://www.npmjs.com/package/abort-controller). An example of timing out a request after 150ms could be achieved as the following: ```js import AbortController from 'abort-controller'; const controller = new AbortController(); const timeout = setTimeout( () => { controller.abort(); }, 150, ); fetch(url, { signal: controller.signal }) .then(res => res.json()) .then( data => { useData(data) }, err => { if (err.name === 'AbortError') { // request was aborted } }, ) .finally(() => { clearTimeout(timeout); }); ``` See [test cases](https://github.com/bitinn/node-fetch/blob/master/test/test.js) for more examples. ## API ### fetch(url[, options]) - `url` A string representing the URL for fetching - `options` [Options](#fetch-options) for the HTTP(S) request - Returns: <code>Promise&lt;[Response](#class-response)&gt;</code> Perform an HTTP(S) fetch. `url` should be an absolute url, such as `https://example.com/`. A path-relative URL (`/file/under/root`) or protocol-relative URL (`//can-be-http-or-https.com/`) will result in a rejected `Promise`. <a id="fetch-options"></a> ### Options The default values are shown after each option key. ```js { // These properties are part of the Fetch Standard method: 'GET', headers: {}, // request headers. format is the identical to that accepted by the Headers constructor (see below) body: null, // request body. can be null, a string, a Buffer, a Blob, or a Node.js Readable stream redirect: 'follow', // set to `manual` to extract redirect headers, `error` to reject redirect signal: null, // pass an instance of AbortSignal to optionally abort requests // The following properties are node-fetch extensions follow: 20, // maximum redirect count. 0 to not follow redirect timeout: 0, // req/res timeout in ms, it resets on redirect. 0 to disable (OS limit applies). Signal is recommended instead. compress: true, // support gzip/deflate content encoding. false to disable size: 0, // maximum response body size in bytes. 0 to disable agent: null // http(s).Agent instance or function that returns an instance (see below) } ``` ##### Default Headers If no values are set, the following request headers will be sent automatically: Header | Value ------------------- | -------------------------------------------------------- `Accept-Encoding` | `gzip,deflate` _(when `options.compress === true`)_ `Accept` | `*/*` `Connection` | `close` _(when no `options.agent` is present)_ `Content-Length` | _(automatically calculated, if possible)_ `Transfer-Encoding` | `chunked` _(when `req.body` is a stream)_ `User-Agent` | `node-fetch/1.0 (+https://github.com/bitinn/node-fetch)` Note: when `body` is a `Stream`, `Content-Length` is not set automatically. ##### Custom Agent The `agent` option allows you to specify networking related options which are out of the scope of Fetch, including and not limited to the following: - Support self-signed certificate - Use only IPv4 or IPv6 - Custom DNS Lookup See [`http.Agent`](https://nodejs.org/api/http.html#http_new_agent_options) for more information. In addition, the `agent` option accepts a function that returns `http`(s)`.Agent` instance given current [URL](https://nodejs.org/api/url.html), this is useful during a redirection chain across HTTP and HTTPS protocol. ```js const httpAgent = new http.Agent({ keepAlive: true }); const httpsAgent = new https.Agent({ keepAlive: true }); const options = { agent: function (_parsedURL) { if (_parsedURL.protocol == 'http:') { return httpAgent; } else { return httpsAgent; } } } ``` <a id="class-request"></a> ### Class: Request An HTTP(S) request containing information about URL, method, headers, and the body. This class implements the [Body](#iface-body) interface. Due to the nature of Node.js, the following properties are not implemented at this moment: - `type` - `destination` - `referrer` - `referrerPolicy` - `mode` - `credentials` - `cache` - `integrity` - `keepalive` The following node-fetch extension properties are provided: - `follow` - `compress` - `counter` - `agent` See [options](#fetch-options) for exact meaning of these extensions. #### new Request(input[, options]) <small>*(spec-compliant)*</small> - `input` A string representing a URL, or another `Request` (which will be cloned) - `options` [Options][#fetch-options] for the HTTP(S) request Constructs a new `Request` object. The constructor is identical to that in the [browser](https://developer.mozilla.org/en-US/docs/Web/API/Request/Request). In most cases, directly `fetch(url, options)` is simpler than creating a `Request` object. <a id="class-response"></a> ### Class: Response An HTTP(S) response. This class implements the [Body](#iface-body) interface. The following properties are not implemented in node-fetch at this moment: - `Response.error()` - `Response.redirect()` - `type` - `trailer` #### new Response([body[, options]]) <small>*(spec-compliant)*</small> - `body` A `String` or [`Readable` stream][node-readable] - `options` A [`ResponseInit`][response-init] options dictionary Constructs a new `Response` object. The constructor is identical to that in the [browser](https://developer.mozilla.org/en-US/docs/Web/API/Response/Response). Because Node.js does not implement service workers (for which this class was designed), one rarely has to construct a `Response` directly. #### response.ok <small>*(spec-compliant)*</small> Convenience property representing if the request ended normally. Will evaluate to true if the response status was greater than or equal to 200 but smaller than 300. #### response.redirected <small>*(spec-compliant)*</small> Convenience property representing if the request has been redirected at least once. Will evaluate to true if the internal redirect counter is greater than 0. <a id="class-headers"></a> ### Class: Headers This class allows manipulating and iterating over a set of HTTP headers. All methods specified in the [Fetch Standard][whatwg-fetch] are implemented. #### new Headers([init]) <small>*(spec-compliant)*</small> - `init` Optional argument to pre-fill the `Headers` object Construct a new `Headers` object. `init` can be either `null`, a `Headers` object, an key-value map object or any iterable object. ```js // Example adapted from https://fetch.spec.whatwg.org/#example-headers-class const meta = { 'Content-Type': 'text/xml', 'Breaking-Bad': '<3' }; const headers = new Headers(meta); // The above is equivalent to const meta = [ [ 'Content-Type', 'text/xml' ], [ 'Breaking-Bad', '<3' ] ]; const headers = new Headers(meta); // You can in fact use any iterable objects, like a Map or even another Headers const meta = new Map(); meta.set('Content-Type', 'text/xml'); meta.set('Breaking-Bad', '<3'); const headers = new Headers(meta); const copyOfHeaders = new Headers(headers); ``` <a id="iface-body"></a> ### Interface: Body `Body` is an abstract interface with methods that are applicable to both `Request` and `Response` classes. The following methods are not yet implemented in node-fetch at this moment: - `formData()` #### body.body <small>*(deviation from spec)*</small> * Node.js [`Readable` stream][node-readable] Data are encapsulated in the `Body` object. Note that while the [Fetch Standard][whatwg-fetch] requires the property to always be a WHATWG `ReadableStream`, in node-fetch it is a Node.js [`Readable` stream][node-readable]. #### body.bodyUsed <small>*(spec-compliant)*</small> * `Boolean` A boolean property for if this body has been consumed. Per the specs, a consumed body cannot be used again. #### body.arrayBuffer() #### body.blob() #### body.json() #### body.text() <small>*(spec-compliant)*</small> * Returns: <code>Promise</code> Consume the body and return a promise that will resolve to one of these formats. #### body.buffer() <small>*(node-fetch extension)*</small> * Returns: <code>Promise&lt;Buffer&gt;</code> Consume the body and return a promise that will resolve to a Buffer. #### body.textConverted() <small>*(node-fetch extension)*</small> * Returns: <code>Promise&lt;String&gt;</code> Identical to `body.text()`, except instead of always converting to UTF-8, encoding sniffing will be performed and text converted to UTF-8 if possible. (This API requires an optional dependency of the npm package [encoding](https://www.npmjs.com/package/encoding), which you need to install manually. `webpack` users may see [a warning message](https://github.com/bitinn/node-fetch/issues/412#issuecomment-379007792) due to this optional dependency.) <a id="class-fetcherror"></a> ### Class: FetchError <small>*(node-fetch extension)*</small> An operational error in the fetching process. See [ERROR-HANDLING.md][] for more info. <a id="class-aborterror"></a> ### Class: AbortError <small>*(node-fetch extension)*</small> An Error thrown when the request is aborted in response to an `AbortSignal`'s `abort` event. It has a `name` property of `AbortError`. See [ERROR-HANDLING.MD][] for more info. ## Acknowledgement Thanks to [github/fetch](https://github.com/github/fetch) for providing a solid implementation reference. `node-fetch` v1 was maintained by [@bitinn](https://github.com/bitinn); v2 was maintained by [@TimothyGu](https://github.com/timothygu), [@bitinn](https://github.com/bitinn) and [@jimmywarting](https://github.com/jimmywarting); v2 readme is written by [@jkantr](https://github.com/jkantr). ## License MIT [npm-image]: https://flat.badgen.net/npm/v/node-fetch [npm-url]: https://www.npmjs.com/package/node-fetch [travis-image]: https://flat.badgen.net/travis/bitinn/node-fetch [travis-url]: https://travis-ci.org/bitinn/node-fetch [codecov-image]: https://flat.badgen.net/codecov/c/github/bitinn/node-fetch/master [codecov-url]: https://codecov.io/gh/bitinn/node-fetch [install-size-image]: https://flat.badgen.net/packagephobia/install/node-fetch [install-size-url]: https://packagephobia.now.sh/result?p=node-fetch [discord-image]: https://img.shields.io/discord/619915844268326952?color=%237289DA&label=Discord&style=flat-square [discord-url]: https://discord.gg/Zxbndcm [opencollective-image]: https://opencollective.com/node-fetch/backers.svg [opencollective-url]: https://opencollective.com/node-fetch [whatwg-fetch]: https://fetch.spec.whatwg.org/ [response-init]: https://fetch.spec.whatwg.org/#responseinit [node-readable]: https://nodejs.org/api/stream.html#stream_readable_streams [mdn-headers]: https://developer.mozilla.org/en-US/docs/Web/API/Headers [LIMITS.md]: https://github.com/bitinn/node-fetch/blob/master/LIMITS.md [ERROR-HANDLING.md]: https://github.com/bitinn/node-fetch/blob/master/ERROR-HANDLING.md [UPGRADE-GUIDE.md]: https://github.com/bitinn/node-fetch/blob/master/UPGRADE-GUIDE.md # whatwg-url whatwg-url is a full implementation of the WHATWG [URL Standard](https://url.spec.whatwg.org/). It can be used standalone, but it also exposes a lot of the internal algorithms that are useful for integrating a URL parser into a project like [jsdom](https://github.com/tmpvar/jsdom). ## Current Status whatwg-url is currently up to date with the URL spec up to commit [a62223](https://github.com/whatwg/url/commit/a622235308342c9adc7fc2fd1659ff059f7d5e2a). ## API ### The `URL` Constructor The main API is the [`URL`](https://url.spec.whatwg.org/#url) export, which follows the spec's behavior in all ways (including e.g. `USVString` conversion). Most consumers of this library will want to use this. ### Low-level URL Standard API The following methods are exported for use by places like jsdom that need to implement things like [`HTMLHyperlinkElementUtils`](https://html.spec.whatwg.org/#htmlhyperlinkelementutils). They operate on or return an "internal URL" or ["URL record"](https://url.spec.whatwg.org/#concept-url) type. - [URL parser](https://url.spec.whatwg.org/#concept-url-parser): `parseURL(input, { baseURL, encodingOverride })` - [Basic URL parser](https://url.spec.whatwg.org/#concept-basic-url-parser): `basicURLParse(input, { baseURL, encodingOverride, url, stateOverride })` - [URL serializer](https://url.spec.whatwg.org/#concept-url-serializer): `serializeURL(urlRecord, excludeFragment)` - [Host serializer](https://url.spec.whatwg.org/#concept-host-serializer): `serializeHost(hostFromURLRecord)` - [Serialize an integer](https://url.spec.whatwg.org/#serialize-an-integer): `serializeInteger(number)` - [Origin](https://url.spec.whatwg.org/#concept-url-origin) [serializer](https://html.spec.whatwg.org/multipage/browsers.html#serialization-of-an-origin): `serializeURLOrigin(urlRecord)` - [Set the username](https://url.spec.whatwg.org/#set-the-username): `setTheUsername(urlRecord, usernameString)` - [Set the password](https://url.spec.whatwg.org/#set-the-password): `setThePassword(urlRecord, passwordString)` - [Cannot have a username/password/port](https://url.spec.whatwg.org/#cannot-have-a-username-password-port): `cannotHaveAUsernamePasswordPort(urlRecord)` The `stateOverride` parameter is one of the following strings: - [`"scheme start"`](https://url.spec.whatwg.org/#scheme-start-state) - [`"scheme"`](https://url.spec.whatwg.org/#scheme-state) - [`"no scheme"`](https://url.spec.whatwg.org/#no-scheme-state) - [`"special relative or authority"`](https://url.spec.whatwg.org/#special-relative-or-authority-state) - [`"path or authority"`](https://url.spec.whatwg.org/#path-or-authority-state) - [`"relative"`](https://url.spec.whatwg.org/#relative-state) - [`"relative slash"`](https://url.spec.whatwg.org/#relative-slash-state) - [`"special authority slashes"`](https://url.spec.whatwg.org/#special-authority-slashes-state) - [`"special authority ignore slashes"`](https://url.spec.whatwg.org/#special-authority-ignore-slashes-state) - [`"authority"`](https://url.spec.whatwg.org/#authority-state) - [`"host"`](https://url.spec.whatwg.org/#host-state) - [`"hostname"`](https://url.spec.whatwg.org/#hostname-state) - [`"port"`](https://url.spec.whatwg.org/#port-state) - [`"file"`](https://url.spec.whatwg.org/#file-state) - [`"file slash"`](https://url.spec.whatwg.org/#file-slash-state) - [`"file host"`](https://url.spec.whatwg.org/#file-host-state) - [`"path start"`](https://url.spec.whatwg.org/#path-start-state) - [`"path"`](https://url.spec.whatwg.org/#path-state) - [`"cannot-be-a-base-URL path"`](https://url.spec.whatwg.org/#cannot-be-a-base-url-path-state) - [`"query"`](https://url.spec.whatwg.org/#query-state) - [`"fragment"`](https://url.spec.whatwg.org/#fragment-state) The URL record type has the following API: - [`scheme`](https://url.spec.whatwg.org/#concept-url-scheme) - [`username`](https://url.spec.whatwg.org/#concept-url-username) - [`password`](https://url.spec.whatwg.org/#concept-url-password) - [`host`](https://url.spec.whatwg.org/#concept-url-host) - [`port`](https://url.spec.whatwg.org/#concept-url-port) - [`path`](https://url.spec.whatwg.org/#concept-url-path) (as an array) - [`query`](https://url.spec.whatwg.org/#concept-url-query) - [`fragment`](https://url.spec.whatwg.org/#concept-url-fragment) - [`cannotBeABaseURL`](https://url.spec.whatwg.org/#url-cannot-be-a-base-url-flag) (as a boolean) These properties should be treated with care, as in general changing them will cause the URL record to be in an inconsistent state until the appropriate invocation of `basicURLParse` is used to fix it up. You can see examples of this in the URL Standard, where there are many step sequences like "4. Set context object’s url’s fragment to the empty string. 5. Basic URL parse _input_ with context object’s url as _url_ and fragment state as _state override_." In between those two steps, a URL record is in an unusable state. The return value of "failure" in the spec is represented by the string `"failure"`. That is, functions like `parseURL` and `basicURLParse` can return _either_ a URL record _or_ the string `"failure"`. NOTE: The default branch has been renamed! master is now named main If you have a local clone, you can update it by running: ```shell git branch -m master main git fetch origin git branch -u origin/main main ``` # **node-addon-api module** This module contains **header-only C++ wrapper classes** which simplify the use of the C based [Node-API](https://nodejs.org/dist/latest/docs/api/n-api.html) provided by Node.js when using C++. It provides a C++ object model and exception handling semantics with low overhead. There are three options for implementing addons: Node-API, nan, or direct use of internal V8, libuv and Node.js libraries. Unless there is a need for direct access to functionality which is not exposed by Node-API as outlined in [C/C++ addons](https://nodejs.org/dist/latest/docs/api/addons.html) in Node.js core, use Node-API. Refer to [C/C++ addons with Node-API](https://nodejs.org/dist/latest/docs/api/n-api.html) for more information on Node-API. Node-API is an ABI stable C interface provided by Node.js for building native addons. It is independent from the underlying JavaScript runtime (e.g. V8 or ChakraCore) and is maintained as part of Node.js itself. It is intended to insulate native addons from changes in the underlying JavaScript engine and allow modules compiled for one version to run on later versions of Node.js without recompilation. The `node-addon-api` module, which is not part of Node.js, preserves the benefits of the Node-API as it consists only of inline code that depends only on the stable API provided by Node-API. As such, modules built against one version of Node.js using node-addon-api should run without having to be rebuilt with newer versions of Node.js. It is important to remember that *other* Node.js interfaces such as `libuv` (included in a project via `#include <uv.h>`) are not ABI-stable across Node.js major versions. Thus, an addon must use Node-API and/or `node-addon-api` exclusively and build against a version of Node.js that includes an implementation of Node-API (meaning an active LTS version of Node.js) in order to benefit from ABI stability across Node.js major versions. Node.js provides an [ABI stability guide][] containing a detailed explanation of ABI stability in general, and the Node-API ABI stability guarantee in particular. As new APIs are added to Node-API, node-addon-api must be updated to provide wrappers for those new APIs. For this reason node-addon-api provides methods that allow callers to obtain the underlying Node-API handles so direct calls to Node-API and the use of the objects/methods provided by node-addon-api can be used together. For example, in order to be able to use an API for which the node-addon-api does not yet provide a wrapper. APIs exposed by node-addon-api are generally used to create and manipulate JavaScript values. Concepts and operations generally map to ideas specified in the **ECMA262 Language Specification**. The [Node-API Resource](https://nodejs.github.io/node-addon-examples/) offers an excellent orientation and tips for developers just getting started with Node-API and node-addon-api. - **[Setup](#setup)** - **[API Documentation](#api)** - **[Examples](#examples)** - **[Tests](#tests)** - **[More resource and info about native Addons](#resources)** - **[Badges](#badges)** - **[Code of Conduct](CODE_OF_CONDUCT.md)** - **[Contributors](#contributors)** - **[License](#license)** ## **Current version: 4.2.0** (See [CHANGELOG.md](CHANGELOG.md) for complete Changelog) [](https://nodei.co/npm/node-addon-api/) [](https://nodei.co/npm/node-addon-api/) <a name="setup"></a> node-addon-api is based on [Node-API](https://nodejs.org/api/n-api.html) and supports using different Node-API versions. This allows addons built with it to run with Node.js versions which support the targeted Node-API version. **However** the node-addon-api support model is to support only the active LTS Node.js versions. This means that every year there will be a new major which drops support for the Node.js LTS version which has gone out of service. The oldest Node.js version supported by the current version of node-addon-api is Node.js 12.x. ## Setup - [Installation and usage](doc/setup.md) - [node-gyp](doc/node-gyp.md) - [cmake-js](doc/cmake-js.md) - [Conversion tool](doc/conversion-tool.md) - [Checker tool](doc/checker-tool.md) - [Generator](doc/generator.md) - [Prebuild tools](doc/prebuild_tools.md) <a name="api"></a> ### **API Documentation** The following is the documentation for node-addon-api. - [Full Class Hierarchy](doc/hierarchy.md) - [Addon Structure](doc/addon.md) - Data Types: - [Env](doc/env.md) - [CallbackInfo](doc/callbackinfo.md) - [Reference](doc/reference.md) - [Value](doc/value.md) - [Name](doc/name.md) - [Symbol](doc/symbol.md) - [String](doc/string.md) - [Number](doc/number.md) - [Date](doc/date.md) - [BigInt](doc/bigint.md) - [Boolean](doc/boolean.md) - [External](doc/external.md) - [Object](doc/object.md) - [Array](doc/array.md) - [ObjectReference](doc/object_reference.md) - [PropertyDescriptor](doc/property_descriptor.md) - [Function](doc/function.md) - [FunctionReference](doc/function_reference.md) - [ObjectWrap](doc/object_wrap.md) - [ClassPropertyDescriptor](doc/class_property_descriptor.md) - [Buffer](doc/buffer.md) - [ArrayBuffer](doc/array_buffer.md) - [TypedArray](doc/typed_array.md) - [TypedArrayOf](doc/typed_array_of.md) - [DataView](doc/dataview.md) - [Error Handling](doc/error_handling.md) - [Error](doc/error.md) - [TypeError](doc/type_error.md) - [RangeError](doc/range_error.md) - [Object Lifetime Management](doc/object_lifetime_management.md) - [HandleScope](doc/handle_scope.md) - [EscapableHandleScope](doc/escapable_handle_scope.md) - [Memory Management](doc/memory_management.md) - [Async Operations](doc/async_operations.md) - [AsyncWorker](doc/async_worker.md) - [AsyncContext](doc/async_context.md) - [AsyncWorker Variants](doc/async_worker_variants.md) - [Thread-safe Functions](doc/threadsafe.md) - [ThreadSafeFunction](doc/threadsafe_function.md) - [TypedThreadSafeFunction](doc/typed_threadsafe_function.md) - [Promises](doc/promises.md) - [Version management](doc/version_management.md) <a name="examples"></a> ### **Examples** Are you new to **node-addon-api**? Take a look at our **[examples](https://github.com/nodejs/node-addon-examples)** - **[Hello World](https://github.com/nodejs/node-addon-examples/tree/HEAD/1_hello_world/node-addon-api)** - **[Pass arguments to a function](https://github.com/nodejs/node-addon-examples/tree/HEAD/2_function_arguments/node-addon-api)** - **[Callbacks](https://github.com/nodejs/node-addon-examples/tree/HEAD/3_callbacks/node-addon-api)** - **[Object factory](https://github.com/nodejs/node-addon-examples/tree/HEAD/4_object_factory/node-addon-api)** - **[Function factory](https://github.com/nodejs/node-addon-examples/tree/HEAD/5_function_factory/node-addon-api)** - **[Wrapping C++ Object](https://github.com/nodejs/node-addon-examples/tree/HEAD/6_object_wrap/node-addon-api)** - **[Factory of wrapped object](https://github.com/nodejs/node-addon-examples/tree/HEAD/7_factory_wrap/node-addon-api)** - **[Passing wrapped object around](https://github.com/nodejs/node-addon-examples/tree/HEAD/8_passing_wrapped/node-addon-api)** <a name="tests"></a> ### **Tests** To run the **node-addon-api** tests do: ``` npm install npm test ``` To avoid testing the deprecated portions of the API run ``` npm install npm test --disable-deprecated ``` To run the tests targeting a specific version of Node-API run ``` npm install export NAPI_VERSION=X npm test --NAPI_VERSION=X ``` where X is the version of Node-API you want to target. ### **Debug** To run the **node-addon-api** tests with `--debug` option: ``` npm run-script dev ``` If you want faster build, you might use the following option: ``` npm run-script dev:incremental ``` Take a look and get inspired by our **[test suite](https://github.com/nodejs/node-addon-api/tree/HEAD/test)** ### **Benchmarks** You can run the available benchmarks using the following command: ``` npm run-script benchmark ``` See [benchmark/README.md](benchmark/README.md) for more details about running and adding benchmarks. <a name="resources"></a> ### **More resource and info about native Addons** - **[C++ Addons](https://nodejs.org/dist/latest/docs/api/addons.html)** - **[Node-API](https://nodejs.org/dist/latest/docs/api/n-api.html)** - **[Node-API - Next Generation Node API for Native Modules](https://youtu.be/-Oniup60Afs)** - **[How We Migrated Realm JavaScript From NAN to Node-API](https://developer.mongodb.com/article/realm-javascript-nan-to-n-api)** As node-addon-api's core mission is to expose the plain C Node-API as C++ wrappers, tools that facilitate n-api/node-addon-api providing more convenient patterns on developing a Node.js add-ons with n-api/node-addon-api can be published to NPM as standalone packages. It is also recommended to tag such packages with `node-addon-api` to provide more visibility to the community. Quick links to NPM searches: [keywords:node-addon-api](https://www.npmjs.com/search?q=keywords%3Anode-addon-api). <a name="other-bindings"></a> ### **Other bindings** - **[napi-rs](https://napi.rs)** - (`Rust`) <a name="badges"></a> ### **Badges** The use of badges is recommended to indicate the minimum version of Node-API required for the module. This helps to determine which Node.js major versions are supported. Addon maintainers can consult the [Node-API support matrix][] to determine which Node.js versions provide a given Node-API version. The following badges are available:          ## **Contributing** We love contributions from the community to **node-addon-api**! See [CONTRIBUTING.md](CONTRIBUTING.md) for more details on our philosophy around extending this module. <a name="contributors"></a> ## Team members ### Active | Name | GitHub Link | | ------------------- | ----------------------------------------------------- | | Anna Henningsen | [addaleax](https://github.com/addaleax) | | Chengzhong Wu | [legendecas](https://github.com/legendecas) | | Gabriel Schulhof | [gabrielschulhof](https://github.com/gabrielschulhof) | | Jim Schlight | [jschlight](https://github.com/jschlight) | | Michael Dawson | [mhdawson](https://github.com/mhdawson) | | Kevin Eady | [KevinEady](https://github.com/KevinEady) | Nicola Del Gobbo | [NickNaso](https://github.com/NickNaso) | ### Emeritus | Name | GitHub Link | | ------------------- | ----------------------------------------------------- | | Arunesh Chandra | [aruneshchandra](https://github.com/aruneshchandra) | | Benjamin Byholm | [kkoopa](https://github.com/kkoopa) | | Jason Ginchereau | [jasongin](https://github.com/jasongin) | | Hitesh Kanwathirtha | [digitalinfinity](https://github.com/digitalinfinity) | | Sampson Gao | [sampsongao](https://github.com/sampsongao) | | Taylor Woll | [boingoing](https://github.com/boingoing) | <a name="license"></a> Licensed under [MIT](./LICENSE.md) [ABI stability guide]: https://nodejs.org/en/docs/guides/abi-stability/ [Node-API support matrix]: https://nodejs.org/dist/latest/docs/api/n-api.html#n_api_n_api_version_matrix Standard library ================ Standard library components for use with `tsc` (portable) and `asc` (assembly). Base configurations (.json) and definition files (.d.ts) are relevant to `tsc` only and not used by `asc`. # Regular Expression Tokenizer Tokenizes strings that represent a regular expressions. [](http://travis-ci.org/fent/ret.js) [](https://david-dm.org/fent/ret.js) [](https://codecov.io/gh/fent/ret.js) # Usage ```js var ret = require('ret'); var tokens = ret(/foo|bar/.source); ``` `tokens` will contain the following object ```js { "type": ret.types.ROOT "options": [ [ { "type": ret.types.CHAR, "value", 102 }, { "type": ret.types.CHAR, "value", 111 }, { "type": ret.types.CHAR, "value", 111 } ], [ { "type": ret.types.CHAR, "value", 98 }, { "type": ret.types.CHAR, "value", 97 }, { "type": ret.types.CHAR, "value", 114 } ] ] } ``` # Token Types `ret.types` is a collection of the various token types exported by ret. ### ROOT Only used in the root of the regexp. This is needed due to the posibility of the root containing a pipe `|` character. In that case, the token will have an `options` key that will be an array of arrays of tokens. If not, it will contain a `stack` key that is an array of tokens. ```js { "type": ret.types.ROOT, "stack": [token1, token2...], } ``` ```js { "type": ret.types.ROOT, "options" [ [token1, token2...], [othertoken1, othertoken2...] ... ], } ``` ### GROUP Groups contain tokens that are inside of a parenthesis. If the group begins with `?` followed by another character, it's a special type of group. A ':' tells the group not to be remembered when `exec` is used. '=' means the previous token matches only if followed by this group, and '!' means the previous token matches only if NOT followed. Like root, it can contain an `options` key instead of `stack` if there is a pipe. ```js { "type": ret.types.GROUP, "remember" true, "followedBy": false, "notFollowedBy": false, "stack": [token1, token2...], } ``` ```js { "type": ret.types.GROUP, "remember" true, "followedBy": false, "notFollowedBy": false, "options" [ [token1, token2...], [othertoken1, othertoken2...] ... ], } ``` ### POSITION `\b`, `\B`, `^`, and `$` specify positions in the regexp. ```js { "type": ret.types.POSITION, "value": "^", } ``` ### SET Contains a key `set` specifying what tokens are allowed and a key `not` specifying if the set should be negated. A set can contain other sets, ranges, and characters. ```js { "type": ret.types.SET, "set": [token1, token2...], "not": false, } ``` ### RANGE Used in set tokens to specify a character range. `from` and `to` are character codes. ```js { "type": ret.types.RANGE, "from": 97, "to": 122, } ``` ### REPETITION ```js { "type": ret.types.REPETITION, "min": 0, "max": Infinity, "value": token, } ``` ### REFERENCE References a group token. `value` is 1-9. ```js { "type": ret.types.REFERENCE, "value": 1, } ``` ### CHAR Represents a single character token. `value` is the character code. This might seem a bit cluttering instead of concatenating characters together. But since repetition tokens only repeat the last token and not the last clause like the pipe, it's simpler to do it this way. ```js { "type": ret.types.CHAR, "value": 123, } ``` ## Errors ret.js will throw errors if given a string with an invalid regular expression. All possible errors are * Invalid group. When a group with an immediate `?` character is followed by an invalid character. It can only be followed by `!`, `=`, or `:`. Example: `/(?_abc)/` * Nothing to repeat. Thrown when a repetitional token is used as the first token in the current clause, as in right in the beginning of the regexp or group, or right after a pipe. Example: `/foo|?bar/`, `/{1,3}foo|bar/`, `/foo(+bar)/` * Unmatched ). A group was not opened, but was closed. Example: `/hello)2u/` * Unterminated group. A group was not closed. Example: `/(1(23)4/` * Unterminated character class. A custom character set was not closed. Example: `/[abc/` # Install npm install ret # Tests Tests are written with [vows](http://vowsjs.org/) ```bash npm test ``` # License MIT # ncp - Asynchronous recursive file & directory copying [](http://travis-ci.org/AvianFlu/ncp) Think `cp -r`, but pure node, and asynchronous. `ncp` can be used both as a CLI tool and programmatically. ## Command Line usage Usage is simple: `ncp [source] [dest] [--limit=concurrency limit] [--filter=filter] --stopOnErr` The 'filter' is a Regular Expression - matched files will be copied. The 'concurrency limit' is an integer that represents how many pending file system requests `ncp` has at a time. 'stoponerr' is a boolean flag that will tell `ncp` to stop immediately if any errors arise, rather than attempting to continue while logging errors. The default behavior is to complete as many copies as possible, logging errors along the way. If there are no errors, `ncp` will output `done.` when complete. If there are errors, the error messages will be logged to `stdout` and to `./ncp-debug.log`, and the copy operation will attempt to continue. ## Programmatic usage Programmatic usage of `ncp` is just as simple. The only argument to the completion callback is a possible error. ```javascript var ncp = require('ncp').ncp; ncp.limit = 16; ncp(source, destination, function (err) { if (err) { return console.error(err); } console.log('done!'); }); ``` You can also call ncp like `ncp(source, destination, options, callback)`. `options` should be a dictionary. Currently, such options are available: * `options.filter` - a `RegExp` instance, against which each file name is tested to determine whether to copy it or not, or a function taking single parameter: copied file name, returning `true` or `false`, determining whether to copy file or not. * `options.transform` - a function: `function (read, write) { read.pipe(write) }` used to apply streaming transforms while copying. * `options.clobber` - boolean=true. if set to false, `ncp` will not overwrite destination files that already exist. * `options.dereference` - boolean=false. If set to true, `ncp` will follow symbolic links. For example, a symlink in the source tree pointing to a regular file will become a regular file in the destination tree. Broken symlinks will result in errors. * `options.stopOnErr` - boolean=false. If set to true, `ncp` will behave like `cp -r`, and stop on the first error it encounters. By default, `ncp` continues copying, logging all errors and returning an array. * `options.errs` - stream. If `options.stopOnErr` is `false`, a stream can be provided, and errors will be written to this stream. Please open an issue if any bugs arise. As always, I accept (working) pull requests, and refunds are available at `/dev/null`. # yargs-parser  [](https://www.npmjs.com/package/yargs-parser) [](https://conventionalcommits.org)  The mighty option parser used by [yargs](https://github.com/yargs/yargs). visit the [yargs website](http://yargs.js.org/) for more examples, and thorough usage instructions. <img width="250" src="https://raw.githubusercontent.com/yargs/yargs-parser/main/yargs-logo.png"> ## Example ```sh npm i yargs-parser --save ``` ```js const argv = require('yargs-parser')(process.argv.slice(2)) console.log(argv) ``` ```console $ node example.js --foo=33 --bar hello { _: [], foo: 33, bar: 'hello' } ``` _or parse a string!_ ```js const argv = require('yargs-parser')('--foo=99 --bar=33') console.log(argv) ``` ```console { _: [], foo: 99, bar: 33 } ``` Convert an array of mixed types before passing to `yargs-parser`: ```js const parse = require('yargs-parser') parse(['-f', 11, '--zoom', 55].join(' ')) // <-- array to string parse(['-f', 11, '--zoom', 55].map(String)) // <-- array of strings ``` ## Deno Example As of `v19` `yargs-parser` supports [Deno](https://github.com/denoland/deno): ```typescript import parser from "https://deno.land/x/yargs_parser/deno.ts"; const argv = parser('--foo=99 --bar=9987930', { string: ['bar'] }) console.log(argv) ``` ## ESM Example As of `v19` `yargs-parser` supports ESM (_both in Node.js and in the browser_): **Node.js:** ```js import parser from 'yargs-parser' const argv = parser('--foo=99 --bar=9987930', { string: ['bar'] }) console.log(argv) ``` **Browsers:** ```html <!doctype html> <body> <script type="module"> import parser from "https://unpkg.com/yargs-parser@19.0.0/browser.js"; const argv = parser('--foo=99 --bar=9987930', { string: ['bar'] }) console.log(argv) </script> </body> ``` ## API ### parser(args, opts={}) Parses command line arguments returning a simple mapping of keys and values. **expects:** * `args`: a string or array of strings representing the options to parse. * `opts`: provide a set of hints indicating how `args` should be parsed: * `opts.alias`: an object representing the set of aliases for a key: `{alias: {foo: ['f']}}`. * `opts.array`: indicate that keys should be parsed as an array: `{array: ['foo', 'bar']}`.<br> Indicate that keys should be parsed as an array and coerced to booleans / numbers:<br> `{array: [{ key: 'foo', boolean: true }, {key: 'bar', number: true}]}`. * `opts.boolean`: arguments should be parsed as booleans: `{boolean: ['x', 'y']}`. * `opts.coerce`: provide a custom synchronous function that returns a coerced value from the argument provided (or throws an error). For arrays the function is called only once for the entire array:<br> `{coerce: {foo: function (arg) {return modifiedArg}}}`. * `opts.config`: indicate a key that represents a path to a configuration file (this file will be loaded and parsed). * `opts.configObjects`: configuration objects to parse, their properties will be set as arguments:<br> `{configObjects: [{'x': 5, 'y': 33}, {'z': 44}]}`. * `opts.configuration`: provide configuration options to the yargs-parser (see: [configuration](#configuration)). * `opts.count`: indicate a key that should be used as a counter, e.g., `-vvv` = `{v: 3}`. * `opts.default`: provide default values for keys: `{default: {x: 33, y: 'hello world!'}}`. * `opts.envPrefix`: environment variables (`process.env`) with the prefix provided should be parsed. * `opts.narg`: specify that a key requires `n` arguments: `{narg: {x: 2}}`. * `opts.normalize`: `path.normalize()` will be applied to values set to this key. * `opts.number`: keys should be treated as numbers. * `opts.string`: keys should be treated as strings (even if they resemble a number `-x 33`). **returns:** * `obj`: an object representing the parsed value of `args` * `key/value`: key value pairs for each argument and their aliases. * `_`: an array representing the positional arguments. * [optional] `--`: an array with arguments after the end-of-options flag `--`. ### require('yargs-parser').detailed(args, opts={}) Parses a command line string, returning detailed information required by the yargs engine. **expects:** * `args`: a string or array of strings representing options to parse. * `opts`: provide a set of hints indicating how `args`, inputs are identical to `require('yargs-parser')(args, opts={})`. **returns:** * `argv`: an object representing the parsed value of `args` * `key/value`: key value pairs for each argument and their aliases. * `_`: an array representing the positional arguments. * [optional] `--`: an array with arguments after the end-of-options flag `--`. * `error`: populated with an error object if an exception occurred during parsing. * `aliases`: the inferred list of aliases built by combining lists in `opts.alias`. * `newAliases`: any new aliases added via camel-case expansion: * `boolean`: `{ fooBar: true }` * `defaulted`: any new argument created by `opts.default`, no aliases included. * `boolean`: `{ foo: true }` * `configuration`: given by default settings and `opts.configuration`. <a name="configuration"></a> ### Configuration The yargs-parser applies several automated transformations on the keys provided in `args`. These features can be turned on and off using the `configuration` field of `opts`. ```js var parsed = parser(['--no-dice'], { configuration: { 'boolean-negation': false } }) ``` ### short option groups * default: `true`. * key: `short-option-groups`. Should a group of short-options be treated as boolean flags? ```console $ node example.js -abc { _: [], a: true, b: true, c: true } ``` _if disabled:_ ```console $ node example.js -abc { _: [], abc: true } ``` ### camel-case expansion * default: `true`. * key: `camel-case-expansion`. Should hyphenated arguments be expanded into camel-case aliases? ```console $ node example.js --foo-bar { _: [], 'foo-bar': true, fooBar: true } ``` _if disabled:_ ```console $ node example.js --foo-bar { _: [], 'foo-bar': true } ``` ### dot-notation * default: `true` * key: `dot-notation` Should keys that contain `.` be treated as objects? ```console $ node example.js --foo.bar { _: [], foo: { bar: true } } ``` _if disabled:_ ```console $ node example.js --foo.bar { _: [], "foo.bar": true } ``` ### parse numbers * default: `true` * key: `parse-numbers` Should keys that look like numbers be treated as such? ```console $ node example.js --foo=99.3 { _: [], foo: 99.3 } ``` _if disabled:_ ```console $ node example.js --foo=99.3 { _: [], foo: "99.3" } ``` ### parse positional numbers * default: `true` * key: `parse-positional-numbers` Should positional keys that look like numbers be treated as such. ```console $ node example.js 99.3 { _: [99.3] } ``` _if disabled:_ ```console $ node example.js 99.3 { _: ['99.3'] } ``` ### boolean negation * default: `true` * key: `boolean-negation` Should variables prefixed with `--no` be treated as negations? ```console $ node example.js --no-foo { _: [], foo: false } ``` _if disabled:_ ```console $ node example.js --no-foo { _: [], "no-foo": true } ``` ### combine arrays * default: `false` * key: `combine-arrays` Should arrays be combined when provided by both command line arguments and a configuration file. ### duplicate arguments array * default: `true` * key: `duplicate-arguments-array` Should arguments be coerced into an array when duplicated: ```console $ node example.js -x 1 -x 2 { _: [], x: [1, 2] } ``` _if disabled:_ ```console $ node example.js -x 1 -x 2 { _: [], x: 2 } ``` ### flatten duplicate arrays * default: `true` * key: `flatten-duplicate-arrays` Should array arguments be coerced into a single array when duplicated: ```console $ node example.js -x 1 2 -x 3 4 { _: [], x: [1, 2, 3, 4] } ``` _if disabled:_ ```console $ node example.js -x 1 2 -x 3 4 { _: [], x: [[1, 2], [3, 4]] } ``` ### greedy arrays * default: `true` * key: `greedy-arrays` Should arrays consume more than one positional argument following their flag. ```console $ node example --arr 1 2 { _: [], arr: [1, 2] } ``` _if disabled:_ ```console $ node example --arr 1 2 { _: [2], arr: [1] } ``` **Note: in `v18.0.0` we are considering defaulting greedy arrays to `false`.** ### nargs eats options * default: `false` * key: `nargs-eats-options` Should nargs consume dash options as well as positional arguments. ### negation prefix * default: `no-` * key: `negation-prefix` The prefix to use for negated boolean variables. ```console $ node example.js --no-foo { _: [], foo: false } ``` _if set to `quux`:_ ```console $ node example.js --quuxfoo { _: [], foo: false } ``` ### populate -- * default: `false`. * key: `populate--` Should unparsed flags be stored in `--` or `_`. _If disabled:_ ```console $ node example.js a -b -- x y { _: [ 'a', 'x', 'y' ], b: true } ``` _If enabled:_ ```console $ node example.js a -b -- x y { _: [ 'a' ], '--': [ 'x', 'y' ], b: true } ``` ### set placeholder key * default: `false`. * key: `set-placeholder-key`. Should a placeholder be added for keys not set via the corresponding CLI argument? _If disabled:_ ```console $ node example.js -a 1 -c 2 { _: [], a: 1, c: 2 } ``` _If enabled:_ ```console $ node example.js -a 1 -c 2 { _: [], a: 1, b: undefined, c: 2 } ``` ### halt at non-option * default: `false`. * key: `halt-at-non-option`. Should parsing stop at the first positional argument? This is similar to how e.g. `ssh` parses its command line. _If disabled:_ ```console $ node example.js -a run b -x y { _: [ 'b' ], a: 'run', x: 'y' } ``` _If enabled:_ ```console $ node example.js -a run b -x y { _: [ 'b', '-x', 'y' ], a: 'run' } ``` ### strip aliased * default: `false` * key: `strip-aliased` Should aliases be removed before returning results? _If disabled:_ ```console $ node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1, 'test-alias': 1, testAlias: 1 } ``` _If enabled:_ ```console $ node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1 } ``` ### strip dashed * default: `false` * key: `strip-dashed` Should dashed keys be removed before returning results? This option has no effect if `camel-case-expansion` is disabled. _If disabled:_ ```console $ node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1 } ``` _If enabled:_ ```console $ node example.js --test-field 1 { _: [], testField: 1 } ``` ### unknown options as args * default: `false` * key: `unknown-options-as-args` Should unknown options be treated like regular arguments? An unknown option is one that is not configured in `opts`. _If disabled_ ```console $ node example.js --unknown-option --known-option 2 --string-option --unknown-option2 { _: [], unknownOption: true, knownOption: 2, stringOption: '', unknownOption2: true } ``` _If enabled_ ```console $ node example.js --unknown-option --known-option 2 --string-option --unknown-option2 { _: ['--unknown-option'], knownOption: 2, stringOption: '--unknown-option2' } ``` ## Supported Node.js Versions Libraries in this ecosystem make a best effort to track [Node.js' release schedule](https://nodejs.org/en/about/releases/). Here's [a post on why we think this is important](https://medium.com/the-node-js-collection/maintainers-should-consider-following-node-js-release-schedule-ab08ed4de71a). ## Special Thanks The yargs project evolves from optimist and minimist. It owes its existence to a lot of James Halliday's hard work. Thanks [substack](https://github.com/substack) **beep** **boop** \o/ ## License ISC # Tools ## clang-format The clang-format checking tools is designed to check changed lines of code compared to given git-refs. ## Migration Script The migration tool is designed to reduce repetitive work in the migration process. However, the script is not aiming to convert every thing for you. There are usually some small fixes and major reconstruction required. ### How To Use To run the conversion script, first make sure you have the latest `node-addon-api` in your `node_modules` directory. ``` npm install node-addon-api ``` Then run the script passing your project directory ``` node ./node_modules/node-addon-api/tools/conversion.js ./ ``` After finish, recompile and debug things that are missed by the script. ### Quick Fixes Here is the list of things that can be fixed easily. 1. Change your methods' return value to void if it doesn't return value to JavaScript. 2. Use `.` to access attribute or to invoke member function in Napi::Object instead of `->`. 3. `Napi::New(env, value);` to `Napi::[Type]::New(env, value); ### Major Reconstructions The implementation of `Napi::ObjectWrap` is significantly different from NAN's. `Napi::ObjectWrap` takes a pointer to the wrapped object and creates a reference to the wrapped object inside ObjectWrap constructor. `Napi::ObjectWrap` also associates wrapped object's instance methods to Javascript module instead of static methods like NAN. So if you use Nan::ObjectWrap in your module, you will need to execute the following steps. 1. Convert your [ClassName]::New function to a constructor function that takes a `Napi::CallbackInfo`. Declare it as ``` [ClassName](const Napi::CallbackInfo& info); ``` and define it as ``` [ClassName]::[ClassName](const Napi::CallbackInfo& info) : Napi::ObjectWrap<[ClassName]>(info){ ... } ``` This way, the `Napi::ObjectWrap` constructor will be invoked after the object has been instantiated and `Napi::ObjectWrap` can use the `this` pointer to create a reference to the wrapped object. 2. Move your original constructor code into the new constructor. Delete your original constructor. 3. In your class initialization function, associate native methods in the following way. ``` Napi::FunctionReference constructor; void [ClassName]::Init(Napi::Env env, Napi::Object exports, Napi::Object module) { Napi::HandleScope scope(env); Napi::Function ctor = DefineClass(env, "Canvas", { InstanceMethod<&[ClassName]::Func1>("Func1"), InstanceMethod<&[ClassName]::Func2>("Func2"), InstanceAccessor<&[ClassName]::ValueGetter>("Value"), StaticMethod<&[ClassName]::StaticMethod>("MethodName"), InstanceValue("Value", Napi::[Type]::New(env, value)), }); constructor = Napi::Persistent(ctor); constructor .SuppressDestruct(); exports.Set("[ClassName]", ctor); } ``` 4. In function where you need to Unwrap the ObjectWrap in NAN like `[ClassName]* native = Nan::ObjectWrap::Unwrap<[ClassName]>(info.This());`, use `this` pointer directly as the unwrapped object as each ObjectWrap instance is associated with a unique object instance. If you still find issues after following this guide, please leave us an issue describing your problem and we will try to resolve it. # parse-passwd [](https://www.npmjs.com/package/parse-passwd) [](https://npmjs.org/package/parse-passwd) [](https://travis-ci.org/doowb/parse-passwd) [](https://ci.appveyor.com/project/doowb/parse-passwd) > Parse a passwd file into a list of users. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save parse-passwd ``` ## Usage ```js var parse = require('parse-passwd'); ``` ## API **Example** ```js // assuming '/etc/passwd' contains: // doowb:*:123:123:Brian Woodward:/Users/doowb:/bin/bash console.log(parse(fs.readFileSync('/etc/passwd', 'utf8'))); //=> [ //=> { //=> username: 'doowb', //=> password: '*', //=> uid: '123', //=> gid: '123', //=> gecos: 'Brian Woodward', //=> homedir: '/Users/doowb', //=> shell: '/bin/bash' //=> } //=> ] ``` **Params** * `content` **{String}**: Content of a passwd file to parse. * `returns` **{Array}**: Array of user objects parsed from the content. ## About ### Contributing Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). Please read the [contributing guide](contributing.md) for avice on opening issues, pull requests, and coding standards. ### Building docs _(This document was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme) (a [verb](https://github.com/verbose/verb) generator), please don't edit the readme directly. Any changes to the readme must be made in [.verb.md](.verb.md).)_ To generate the readme and API documentation with [verb](https://github.com/verbose/verb): ```sh $ npm install -g verb verb-generate-readme && verb ``` ### Running tests Install dev dependencies: ```sh $ npm install -d && npm test ``` ### Author **Brian Woodward** * [github/doowb](https://github.com/doowb) * [twitter/doowb](http://twitter.com/doowb) ### License Copyright © 2016, [Brian Woodward](https://github.com/doowb). Released under the [MIT license](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.2.0, on October 19, 2016._ are-we-there-yet ---------------- Track complex hiearchies of asynchronous task completion statuses. This is intended to give you a way of recording and reporting the progress of the big recursive fan-out and gather type workflows that are so common in async. What you do with this completion data is up to you, but the most common use case is to feed it to one of the many progress bar modules. Most progress bar modules include a rudamentary version of this, but my needs were more complex. Usage ===== ```javascript var TrackerGroup = require("are-we-there-yet").TrackerGroup var top = new TrackerGroup("program") var single = top.newItem("one thing", 100) single.completeWork(20) console.log(top.completed()) // 0.2 fs.stat("file", function(er, stat) { if (er) throw er var stream = top.newStream("file", stat.size) console.log(top.completed()) // now 0.1 as single is 50% of the job and is 20% complete // and 50% * 20% == 10% fs.createReadStream("file").pipe(stream).on("data", function (chunk) { // do stuff with chunk }) top.on("change", function (name) { // called each time a chunk is read from "file" // top.completed() will start at 0.1 and fill up to 0.6 as the file is read }) }) ``` Shared Methods ============== * var completed = tracker.completed() Implemented in: `Tracker`, `TrackerGroup`, `TrackerStream` Returns the ratio of completed work to work to be done. Range of 0 to 1. * tracker.finish() Implemented in: `Tracker`, `TrackerGroup` Marks the tracker as completed. With a TrackerGroup this marks all of its components as completed. Marks all of the components of this tracker as finished, which in turn means that `tracker.completed()` for this will now be 1. This will result in one or more `change` events being emitted. Events ====== All tracker objects emit `change` events with the following arguments: ``` function (name, completed, tracker) ``` `name` is the name of the tracker that originally emitted the event, or if it didn't have one, the first containing tracker group that had one. `completed` is the percent complete (as returned by `tracker.completed()` method). `tracker` is the tracker object that you are listening for events on. TrackerGroup ============ * var tracker = new TrackerGroup(**name**) * **name** *(optional)* - The name of this tracker group, used in change notifications if the component updating didn't have a name. Defaults to undefined. Creates a new empty tracker aggregation group. These are trackers whose completion status is determined by the completion status of other trackers. * tracker.addUnit(**otherTracker**, **weight**) * **otherTracker** - Any of the other are-we-there-yet tracker objects * **weight** *(optional)* - The weight to give the tracker, defaults to 1. Adds the **otherTracker** to this aggregation group. The weight determines how long you expect this tracker to take to complete in proportion to other units. So for instance, if you add one tracker with a weight of 1 and another with a weight of 2, you're saying the second will take twice as long to complete as the first. As such, the first will account for 33% of the completion of this tracker and the second will account for the other 67%. Returns **otherTracker**. * var subGroup = tracker.newGroup(**name**, **weight**) The above is exactly equivalent to: ```javascript var subGroup = tracker.addUnit(new TrackerGroup(name), weight) ``` * var subItem = tracker.newItem(**name**, **todo**, **weight**) The above is exactly equivalent to: ```javascript var subItem = tracker.addUnit(new Tracker(name, todo), weight) ``` * var subStream = tracker.newStream(**name**, **todo**, **weight**) The above is exactly equivalent to: ```javascript var subStream = tracker.addUnit(new TrackerStream(name, todo), weight) ``` * console.log( tracker.debug() ) Returns a tree showing the completion of this tracker group and all of its children, including recursively entering all of the children. Tracker ======= * var tracker = new Tracker(**name**, **todo**) * **name** *(optional)* The name of this counter to report in change events. Defaults to undefined. * **todo** *(optional)* The amount of work todo (a number). Defaults to 0. Ordinarily these are constructed as a part of a tracker group (via `newItem`). * var completed = tracker.completed() Returns the ratio of completed work to work to be done. Range of 0 to 1. If total work to be done is 0 then it will return 0. * tracker.addWork(**todo**) * **todo** A number to add to the amount of work to be done. Increases the amount of work to be done, thus decreasing the completion percentage. Triggers a `change` event. * tracker.completeWork(**completed**) * **completed** A number to add to the work complete Increase the amount of work complete, thus increasing the completion percentage. Will never increase the work completed past the amount of work todo. That is, percentages > 100% are not allowed. Triggers a `change` event. * tracker.finish() Marks this tracker as finished, tracker.completed() will now be 1. Triggers a `change` event. TrackerStream ============= * var tracker = new TrackerStream(**name**, **size**, **options**) * **name** *(optional)* The name of this counter to report in change events. Defaults to undefined. * **size** *(optional)* The number of bytes being sent through this stream. * **options** *(optional)* A hash of stream options The tracker stream object is a pass through stream that updates an internal tracker object each time a block passes through. It's intended to track downloads, file extraction and other related activities. You use it by piping your data source into it and then using it as your data source. If your data has a length attribute then that's used as the amount of work completed when the chunk is passed through. If it does not (eg, object streams) then each chunk counts as completing 1 unit of work, so your size should be the total number of objects being streamed. * tracker.addWork(**todo**) * **todo** Increase the expected overall size by **todo** bytes. Increases the amount of work to be done, thus decreasing the completion percentage. Triggers a `change` event. # AssemblyScript Rtrace A tiny utility to sanitize the AssemblyScript runtime. Records allocations and frees performed by the runtime and emits an error if something is off. Also checks for leaks. Instructions ------------ Compile your module that uses the full or half runtime with `-use ASC_RTRACE=1 --explicitStart` and include an instance of this module as the import named `rtrace`. ```js const rtrace = new Rtrace({ onerror(err, info) { // handle error }, oninfo(msg) { // print message, optional }, getMemory() { // obtain the module's memory, // e.g. with --explicitStart: return instance.exports.memory; } }); const { module, instance } = await WebAssembly.instantiate(..., rtrace.install({ ...imports... }) ); instance.exports._start(); ... if (rtrace.active) { let leakCount = rtr.check(); if (leakCount) { // handle error } } ``` Note that references in globals which are not cleared before collection is performed appear as leaks, including their inner members. A TypedArray would leak itself and its backing ArrayBuffer in this case for example. This is perfectly normal and clearing all globals avoids this. JS-YAML - YAML 1.2 parser / writer for JavaScript ================================================= [](https://travis-ci.org/nodeca/js-yaml) [](https://www.npmjs.org/package/js-yaml) __[Online Demo](http://nodeca.github.com/js-yaml/)__ This is an implementation of [YAML](http://yaml.org/), a human-friendly data serialization language. Started as [PyYAML](http://pyyaml.org/) port, it was completely rewritten from scratch. Now it's very fast, and supports 1.2 spec. Installation ------------ ### YAML module for node.js ``` npm install js-yaml ``` ### CLI executable If you want to inspect your YAML files from CLI, install js-yaml globally: ``` npm install -g js-yaml ``` #### Usage ``` usage: js-yaml [-h] [-v] [-c] [-t] file Positional arguments: file File with YAML document(s) Optional arguments: -h, --help Show this help message and exit. -v, --version Show program's version number and exit. -c, --compact Display errors in compact mode -t, --trace Show stack trace on error ``` ### Bundled YAML library for browsers ``` html <!-- esprima required only for !!js/function --> <script src="esprima.js"></script> <script src="js-yaml.min.js"></script> <script type="text/javascript"> var doc = jsyaml.load('greeting: hello\nname: world'); </script> ``` Browser support was done mostly for the online demo. If you find any errors - feel free to send pull requests with fixes. Also note, that IE and other old browsers needs [es5-shims](https://github.com/kriskowal/es5-shim) to operate. Notes: 1. We have no resources to support browserified version. Don't expect it to be well tested. Don't expect fast fixes if something goes wrong there. 2. `!!js/function` in browser bundle will not work by default. If you really need it - load `esprima` parser first (via amd or directly). 3. `!!bin` in browser will return `Array`, because browsers do not support node.js `Buffer` and adding Buffer shims is completely useless on practice. API --- Here we cover the most 'useful' methods. If you need advanced details (creating your own tags), see [wiki](https://github.com/nodeca/js-yaml/wiki) and [examples](https://github.com/nodeca/js-yaml/tree/master/examples) for more info. ``` javascript const yaml = require('js-yaml'); const fs = require('fs'); // Get document, or throw exception on error try { const doc = yaml.safeLoad(fs.readFileSync('/home/ixti/example.yml', 'utf8')); console.log(doc); } catch (e) { console.log(e); } ``` ### safeLoad (string [ , options ]) **Recommended loading way.** Parses `string` as single YAML document. Returns either a plain object, a string or `undefined`, or throws `YAMLException` on error. By default, does not support regexps, functions and undefined. This method is safe for untrusted data. options: - `filename` _(default: null)_ - string to be used as a file path in error/warning messages. - `onWarning` _(default: null)_ - function to call on warning messages. Loader will call this function with an instance of `YAMLException` for each warning. - `schema` _(default: `DEFAULT_SAFE_SCHEMA`)_ - specifies a schema to use. - `FAILSAFE_SCHEMA` - only strings, arrays and plain objects: http://www.yaml.org/spec/1.2/spec.html#id2802346 - `JSON_SCHEMA` - all JSON-supported types: http://www.yaml.org/spec/1.2/spec.html#id2803231 - `CORE_SCHEMA` - same as `JSON_SCHEMA`: http://www.yaml.org/spec/1.2/spec.html#id2804923 - `DEFAULT_SAFE_SCHEMA` - all supported YAML types, without unsafe ones (`!!js/undefined`, `!!js/regexp` and `!!js/function`): http://yaml.org/type/ - `DEFAULT_FULL_SCHEMA` - all supported YAML types. - `json` _(default: false)_ - compatibility with JSON.parse behaviour. If true, then duplicate keys in a mapping will override values rather than throwing an error. NOTE: This function **does not** understand multi-document sources, it throws exception on those. NOTE: JS-YAML **does not** support schema-specific tag resolution restrictions. So, the JSON schema is not as strictly defined in the YAML specification. It allows numbers in any notation, use `Null` and `NULL` as `null`, etc. The core schema also has no such restrictions. It allows binary notation for integers. ### load (string [ , options ]) **Use with care with untrusted sources**. The same as `safeLoad()` but uses `DEFAULT_FULL_SCHEMA` by default - adds some JavaScript-specific types: `!!js/function`, `!!js/regexp` and `!!js/undefined`. For untrusted sources, you must additionally validate object structure to avoid injections: ``` javascript const untrusted_code = '"toString": !<tag:yaml.org,2002:js/function> "function (){very_evil_thing();}"'; // I'm just converting that string, what could possibly go wrong? require('js-yaml').load(untrusted_code) + '' ``` ### safeLoadAll (string [, iterator] [, options ]) Same as `safeLoad()`, but understands multi-document sources. Applies `iterator` to each document if specified, or returns array of documents. ``` javascript const yaml = require('js-yaml'); yaml.safeLoadAll(data, function (doc) { console.log(doc); }); ``` ### loadAll (string [, iterator] [ , options ]) Same as `safeLoadAll()` but uses `DEFAULT_FULL_SCHEMA` by default. ### safeDump (object [ , options ]) Serializes `object` as a YAML document. Uses `DEFAULT_SAFE_SCHEMA`, so it will throw an exception if you try to dump regexps or functions. However, you can disable exceptions by setting the `skipInvalid` option to `true`. options: - `indent` _(default: 2)_ - indentation width to use (in spaces). - `noArrayIndent` _(default: false)_ - when true, will not add an indentation level to array elements - `skipInvalid` _(default: false)_ - do not throw on invalid types (like function in the safe schema) and skip pairs and single values with such types. - `flowLevel` (default: -1) - specifies level of nesting, when to switch from block to flow style for collections. -1 means block style everwhere - `styles` - "tag" => "style" map. Each tag may have own set of styles. - `schema` _(default: `DEFAULT_SAFE_SCHEMA`)_ specifies a schema to use. - `sortKeys` _(default: `false`)_ - if `true`, sort keys when dumping YAML. If a function, use the function to sort the keys. - `lineWidth` _(default: `80`)_ - set max line width. - `noRefs` _(default: `false`)_ - if `true`, don't convert duplicate objects into references - `noCompatMode` _(default: `false`)_ - if `true` don't try to be compatible with older yaml versions. Currently: don't quote "yes", "no" and so on, as required for YAML 1.1 - `condenseFlow` _(default: `false`)_ - if `true` flow sequences will be condensed, omitting the space between `a, b`. Eg. `'[a,b]'`, and omitting the space between `key: value` and quoting the key. Eg. `'{"a":b}'` Can be useful when using yaml for pretty URL query params as spaces are %-encoded. The following table show availlable styles (e.g. "canonical", "binary"...) available for each tag (.e.g. !!null, !!int ...). Yaml output is shown on the right side after `=>` (default setting) or `->`: ``` none !!null "canonical" -> "~" "lowercase" => "null" "uppercase" -> "NULL" "camelcase" -> "Null" !!int "binary" -> "0b1", "0b101010", "0b1110001111010" "octal" -> "01", "052", "016172" "decimal" => "1", "42", "7290" "hexadecimal" -> "0x1", "0x2A", "0x1C7A" !!bool "lowercase" => "true", "false" "uppercase" -> "TRUE", "FALSE" "camelcase" -> "True", "False" !!float "lowercase" => ".nan", '.inf' "uppercase" -> ".NAN", '.INF' "camelcase" -> ".NaN", '.Inf' ``` Example: ``` javascript safeDump (object, { 'styles': { '!!null': 'canonical' // dump null as ~ }, 'sortKeys': true // sort object keys }); ``` ### dump (object [ , options ]) Same as `safeDump()` but without limits (uses `DEFAULT_FULL_SCHEMA` by default). Supported YAML types -------------------- The list of standard YAML tags and corresponding JavaScipt types. See also [YAML tag discussion](http://pyyaml.org/wiki/YAMLTagDiscussion) and [YAML types repository](http://yaml.org/type/). ``` !!null '' # null !!bool 'yes' # bool !!int '3...' # number !!float '3.14...' # number !!binary '...base64...' # buffer !!timestamp 'YYYY-...' # date !!omap [ ... ] # array of key-value pairs !!pairs [ ... ] # array or array pairs !!set { ... } # array of objects with given keys and null values !!str '...' # string !!seq [ ... ] # array !!map { ... } # object ``` **JavaScript-specific tags** ``` !!js/regexp /pattern/gim # RegExp !!js/undefined '' # Undefined !!js/function 'function () {...}' # Function ``` Caveats ------- Note, that you use arrays or objects as key in JS-YAML. JS does not allow objects or arrays as keys, and stringifies (by calling `toString()` method) them at the moment of adding them. ``` yaml --- ? [ foo, bar ] : - baz ? { foo: bar } : - baz - baz ``` ``` javascript { "foo,bar": ["baz"], "[object Object]": ["baz", "baz"] } ``` Also, reading of properties on implicit block mapping keys is not supported yet. So, the following YAML document cannot be loaded. ``` yaml &anchor foo: foo: bar *anchor: duplicate key baz: bat *anchor: duplicate key ``` js-yaml for enterprise ---------------------- Available as part of the Tidelift Subscription The maintainers of js-yaml and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. [Learn more.](https://tidelift.com/subscription/pkg/npm-js-yaml?utm_source=npm-js-yaml&utm_medium=referral&utm_campaign=enterprise&utm_term=repo) <p align="center"> <a href="https://gulpjs.com"> <img height="257" width="114" src="https://raw.githubusercontent.com/gulpjs/artwork/master/gulp-2x.png"> </a> </p> # glob-parent [![NPM version][npm-image]][npm-url] [![Downloads][downloads-image]][npm-url] [![Azure Pipelines Build Status][azure-pipelines-image]][azure-pipelines-url] [![Travis Build Status][travis-image]][travis-url] [![AppVeyor Build Status][appveyor-image]][appveyor-url] [![Coveralls Status][coveralls-image]][coveralls-url] [![Gitter chat][gitter-image]][gitter-url] Extract the non-magic parent path from a glob string. ## Usage ```js var globParent = require('glob-parent'); globParent('path/to/*.js'); // 'path/to' globParent('/root/path/to/*.js'); // '/root/path/to' globParent('/*.js'); // '/' globParent('*.js'); // '.' globParent('**/*.js'); // '.' globParent('path/{to,from}'); // 'path' globParent('path/!(to|from)'); // 'path' globParent('path/?(to|from)'); // 'path' globParent('path/+(to|from)'); // 'path' globParent('path/*(to|from)'); // 'path' globParent('path/@(to|from)'); // 'path' globParent('path/**/*'); // 'path' // if provided a non-glob path, returns the nearest dir globParent('path/foo/bar.js'); // 'path/foo' globParent('path/foo/'); // 'path/foo' globParent('path/foo'); // 'path' (see issue #3 for details) ``` ## API ### `globParent(maybeGlobString, [options])` Takes a string and returns the part of the path before the glob begins. Be aware of Escaping rules and Limitations below. #### options ```js { // Disables the automatic conversion of slashes for Windows flipBackslashes: true } ``` ## Escaping The following characters have special significance in glob patterns and must be escaped if you want them to be treated as regular path characters: - `?` (question mark) unless used as a path segment alone - `*` (asterisk) - `|` (pipe) - `(` (opening parenthesis) - `)` (closing parenthesis) - `{` (opening curly brace) - `}` (closing curly brace) - `[` (opening bracket) - `]` (closing bracket) **Example** ```js globParent('foo/[bar]/') // 'foo' globParent('foo/\\[bar]/') // 'foo/[bar]' ``` ## Limitations ### Braces & Brackets This library attempts a quick and imperfect method of determining which path parts have glob magic without fully parsing/lexing the pattern. There are some advanced use cases that can trip it up, such as nested braces where the outer pair is escaped and the inner one contains a path separator. If you find yourself in the unlikely circumstance of being affected by this or need to ensure higher-fidelity glob handling in your library, it is recommended that you pre-process your input with [expand-braces] and/or [expand-brackets]. ### Windows Backslashes are not valid path separators for globs. If a path with backslashes is provided anyway, for simple cases, glob-parent will replace the path separator for you and return the non-glob parent path (now with forward-slashes, which are still valid as Windows path separators). This cannot be used in conjunction with escape characters. ```js // BAD globParent('C:\\Program Files \\(x86\\)\\*.ext') // 'C:/Program Files /(x86/)' // GOOD globParent('C:/Program Files\\(x86\\)/*.ext') // 'C:/Program Files (x86)' ``` If you are using escape characters for a pattern without path parts (i.e. relative to `cwd`), prefix with `./` to avoid confusing glob-parent. ```js // BAD globParent('foo \\[bar]') // 'foo ' globParent('foo \\[bar]*') // 'foo ' // GOOD globParent('./foo \\[bar]') // 'foo [bar]' globParent('./foo \\[bar]*') // '.' ``` ## License ISC [expand-braces]: https://github.com/jonschlinkert/expand-braces [expand-brackets]: https://github.com/jonschlinkert/expand-brackets [downloads-image]: https://img.shields.io/npm/dm/glob-parent.svg [npm-url]: https://www.npmjs.com/package/glob-parent [npm-image]: https://img.shields.io/npm/v/glob-parent.svg [azure-pipelines-url]: https://dev.azure.com/gulpjs/gulp/_build/latest?definitionId=2&branchName=master [azure-pipelines-image]: https://dev.azure.com/gulpjs/gulp/_apis/build/status/glob-parent?branchName=master [travis-url]: https://travis-ci.org/gulpjs/glob-parent [travis-image]: https://img.shields.io/travis/gulpjs/glob-parent.svg?label=travis-ci [appveyor-url]: https://ci.appveyor.com/project/gulpjs/glob-parent [appveyor-image]: https://img.shields.io/appveyor/ci/gulpjs/glob-parent.svg?label=appveyor [coveralls-url]: https://coveralls.io/r/gulpjs/glob-parent [coveralls-image]: https://img.shields.io/coveralls/gulpjs/glob-parent/master.svg [gitter-url]: https://gitter.im/gulpjs/gulp [gitter-image]: https://badges.gitter.im/gulpjs/gulp.svg # napi-build-utils [](https://www.npmjs.com/package/napi-build-utils)  [](https://travis-ci.org/inspiredware/napi-build-utils) [](http://standardjs.com/) [](https://opensource.org/licenses/MIT) A set of utilities to assist developers of tools that build [N-API](https://nodejs.org/api/n-api.html#n_api_n_api) native add-ons. ## Background This module is targeted to developers creating tools that build N-API native add-ons. It implements a set of functions that aid in determining the N-API version supported by the currently running Node instance and the set of N-API versions against which the N-API native add-on is designed to be built. Other functions determine whether a particular N-API version can be built and can issue console warnings for unsupported N-API versions. Unlike the modules this code is designed to facilitate building, this module is written entirely in JavaScript. ## Quick start ```bash $ npm install napi-build-utils ``` The module exports a set of functions documented [here](./index.md). For example: ```javascript var napiBuildUtils = require('napi-build-utils'); var napiVersion = napiBuildUtils.getNapiVersion(); // N-API version supported by Node, or undefined. ``` ## Declaring supported N-API versions Native modules that are designed to work with [N-API](https://nodejs.org/api/n-api.html#n_api_n_api) must explicitly declare the N-API version(s) against which they are coded to build. This is accomplished by including a `binary.napi_versions` property in the module's `package.json` file. For example: ```json "binary": { "napi_versions": [2,3] } ``` In the absence of a need to compile against a specific N-API version, the value `3` is a good choice as this is the N-API version that was supported when N-API left experimental status. Modules that are built against a specific N-API version will continue to operate indefinitely, even as later versions of N-API are introduced. ## Support If you run into problems or limitations, please file an issue and we'll take a look. Pull requests are also welcome. # minimatch A minimal matching utility. [](http://travis-ci.org/isaacs/minimatch) This is the matching library used internally by npm. It works by converting glob expressions into JavaScript `RegExp` objects. ## Usage ```javascript var minimatch = require("minimatch") minimatch("bar.foo", "*.foo") // true! minimatch("bar.foo", "*.bar") // false! minimatch("bar.foo", "*.+(bar|foo)", { debug: true }) // true, and noisy! ``` ## Features Supports these glob features: * Brace Expansion * Extended glob matching * "Globstar" `**` matching See: * `man sh` * `man bash` * `man 3 fnmatch` * `man 5 gitignore` ## Minimatch Class Create a minimatch object by instantiating the `minimatch.Minimatch` class. ```javascript var Minimatch = require("minimatch").Minimatch var mm = new Minimatch(pattern, options) ``` ### Properties * `pattern` The original pattern the minimatch object represents. * `options` The options supplied to the constructor. * `set` A 2-dimensional array of regexp or string expressions. Each row in the array corresponds to a brace-expanded pattern. Each item in the row corresponds to a single path-part. For example, the pattern `{a,b/c}/d` would expand to a set of patterns like: [ [ a, d ] , [ b, c, d ] ] If a portion of the pattern doesn't have any "magic" in it (that is, it's something like `"foo"` rather than `fo*o?`), then it will be left as a string rather than converted to a regular expression. * `regexp` Created by the `makeRe` method. A single regular expression expressing the entire pattern. This is useful in cases where you wish to use the pattern somewhat like `fnmatch(3)` with `FNM_PATH` enabled. * `negate` True if the pattern is negated. * `comment` True if the pattern is a comment. * `empty` True if the pattern is `""`. ### Methods * `makeRe` Generate the `regexp` member if necessary, and return it. Will return `false` if the pattern is invalid. * `match(fname)` Return true if the filename matches the pattern, or false otherwise. * `matchOne(fileArray, patternArray, partial)` Take a `/`-split filename, and match it against a single row in the `regExpSet`. This method is mainly for internal use, but is exposed so that it can be used by a glob-walker that needs to avoid excessive filesystem calls. All other methods are internal, and will be called as necessary. ### minimatch(path, pattern, options) Main export. Tests a path against the pattern using the options. ```javascript var isJS = minimatch(file, "*.js", { matchBase: true }) ``` ### minimatch.filter(pattern, options) Returns a function that tests its supplied argument, suitable for use with `Array.filter`. Example: ```javascript var javascripts = fileList.filter(minimatch.filter("*.js", {matchBase: true})) ``` ### minimatch.match(list, pattern, options) Match against the list of files, in the style of fnmatch or glob. If nothing is matched, and options.nonull is set, then return a list containing the pattern itself. ```javascript var javascripts = minimatch.match(fileList, "*.js", {matchBase: true})) ``` ### minimatch.makeRe(pattern, options) Make a regular expression object from the pattern. ## Options All options are `false` by default. ### debug Dump a ton of stuff to stderr. ### nobrace Do not expand `{a,b}` and `{1..3}` brace sets. ### noglobstar Disable `**` matching against multiple folder names. ### dot Allow patterns to match filenames starting with a period, even if the pattern does not explicitly have a period in that spot. Note that by default, `a/**/b` will **not** match `a/.d/b`, unless `dot` is set. ### noext Disable "extglob" style patterns like `+(a|b)`. ### nocase Perform a case-insensitive match. ### nonull When a match is not found by `minimatch.match`, return a list containing the pattern itself if this option is set. When not set, an empty list is returned if there are no matches. ### matchBase If set, then patterns without slashes will be matched against the basename of the path if it contains slashes. For example, `a?b` would match the path `/xyz/123/acb`, but not `/xyz/acb/123`. ### nocomment Suppress the behavior of treating `#` at the start of a pattern as a comment. ### nonegate Suppress the behavior of treating a leading `!` character as negation. ### flipNegate Returns from negate expressions the same as if they were not negated. (Ie, true on a hit, false on a miss.) ## Comparisons to other fnmatch/glob implementations While strict compliance with the existing standards is a worthwhile goal, some discrepancies exist between minimatch and other implementations, and are intentional. If the pattern starts with a `!` character, then it is negated. Set the `nonegate` flag to suppress this behavior, and treat leading `!` characters normally. This is perhaps relevant if you wish to start the pattern with a negative extglob pattern like `!(a|B)`. Multiple `!` characters at the start of a pattern will negate the pattern multiple times. If a pattern starts with `#`, then it is treated as a comment, and will not match anything. Use `\#` to match a literal `#` at the start of a line, or set the `nocomment` flag to suppress this behavior. The double-star character `**` is supported by default, unless the `noglobstar` flag is set. This is supported in the manner of bsdglob and bash 4.1, where `**` only has special significance if it is the only thing in a path part. That is, `a/**/b` will match `a/x/y/b`, but `a/**b` will not. If an escaped pattern has no matches, and the `nonull` flag is set, then minimatch.match returns the pattern as-provided, rather than interpreting the character escapes. For example, `minimatch.match([], "\\*a\\?")` will return `"\\*a\\?"` rather than `"*a?"`. This is akin to setting the `nullglob` option in bash, except that it does not resolve escaped pattern characters. If brace expansion is not disabled, then it is performed before any other interpretation of the glob pattern. Thus, a pattern like `+(a|{b),c)}`, which would not be valid in bash or zsh, is expanded **first** into the set of `+(a|b)` and `+(a|c)`, and those patterns are checked for validity. Since those two are valid, matching proceeds. # ts-mixer [version-badge]: https://badgen.net/npm/v/ts-mixer [version-link]: https://npmjs.com/package/ts-mixer [build-badge]: https://img.shields.io/github/workflow/status/tannerntannern/ts-mixer/ts-mixer%20CI [build-link]: https://github.com/tannerntannern/ts-mixer/actions [ts-versions]: https://badgen.net/badge/icon/3.8,3.9,4.0,4.1,4.2?icon=typescript&label&list=| [node-versions]: https://badgen.net/badge/node/10%2C12%2C14/blue/?list=| [![npm version][version-badge]][version-link] [![github actions][build-badge]][build-link] [![TS Versions][ts-versions]][build-link] [![Node.js Versions][node-versions]][build-link] [](https://bundlephobia.com/result?p=ts-mixer) [](https://conventionalcommits.org) ## Overview `ts-mixer` brings mixins to TypeScript. "Mixins" to `ts-mixer` are just classes, so you already know how to write them, and you can probably mix classes from your favorite library without trouble. The mixin problem is more nuanced than it appears. I've seen countless code snippets that work for certain situations, but fail in others. `ts-mixer` tries to take the best from all these solutions while accounting for the situations you might not have considered. [Quick start guide](#quick-start) ### Features * mixes plain classes * mixes classes that extend other classes * mixes classes that were mixed with `ts-mixer` * supports static properties * supports protected/private properties (the popular function-that-returns-a-class solution does not) * mixes abstract classes (with caveats [[1](#caveats)]) * mixes generic classes (with caveats [[2](#caveats)]) * supports class, method, and property decorators (with caveats [[3, 6](#caveats)]) * mostly supports the complexity presented by constructor functions (with caveats [[4](#caveats)]) * comes with an `instanceof`-like replacement (with caveats [[5, 6](#caveats)]) * [multiple mixing strategies](#settings) (ES6 proxies vs hard copy) ### Caveats 1. Mixing abstract classes requires a bit of a hack that may break in future versions of TypeScript. See [mixing abstract classes](#mixing-abstract-classes) below. 2. Mixing generic classes requires a more cumbersome notation, but it's still possible. See [mixing generic classes](#mixing-generic-classes) below. 3. Using decorators in mixed classes also requires a more cumbersome notation. See [mixing with decorators](#mixing-with-decorators) below. 4. ES6 made it impossible to use `.apply(...)` on class constructors (or any means of calling them without `new`), which makes it impossible for `ts-mixer` to pass the proper `this` to your constructors. This may or may not be an issue for your code, but there are options to work around it. See [dealing with constructors](#dealing-with-constructors) below. 5. `ts-mixer` does not support `instanceof` for mixins, but it does offer a replacement. See the [hasMixin function](#hasmixin) for more details. 6. Certain features (specifically, `@decorator` and `hasMixin`) make use of ES6 `Map`s, which means you must either use ES6+ or polyfill `Map` to use them. If you don't need these features, you should be fine without. ## Quick Start ### Installation ``` $ npm install ts-mixer ``` or if you prefer [Yarn](https://yarnpkg.com): ``` $ yarn add ts-mixer ``` ### Basic Example ```typescript import { Mixin } from 'ts-mixer'; class Foo { protected makeFoo() { return 'foo'; } } class Bar { protected makeBar() { return 'bar'; } } class FooBar extends Mixin(Foo, Bar) { public makeFooBar() { return this.makeFoo() + this.makeBar(); } } const fooBar = new FooBar(); console.log(fooBar.makeFooBar()); // "foobar" ``` ## Special Cases ### Mixing Abstract Classes Abstract classes, by definition, cannot be constructed, which means they cannot take on the type, `new(...args) => any`, and by extension, are incompatible with `ts-mixer`. BUT, you can "trick" TypeScript into giving you all the benefits of an abstract class without making it technically abstract. The trick is just some strategic `// @ts-ignore`'s: ```typescript import { Mixin } from 'ts-mixer'; // note that Foo is not marked as an abstract class class Foo { // @ts-ignore: "Abstract methods can only appear within an abstract class" public abstract makeFoo(): string; } class Bar { public makeBar() { return 'bar'; } } class FooBar extends Mixin(Foo, Bar) { // we still get all the benefits of abstract classes here, because TypeScript // will still complain if this method isn't implemented public makeFoo() { return 'foo'; } } ``` Do note that while this does work quite well, it is a bit of a hack and I can't promise that it will continue to work in future TypeScript versions. ### Mixing Generic Classes Frustratingly, it is _impossible_ for generic parameters to be referenced in base class expressions. No matter what, you will eventually run into `Base class expressions cannot reference class type parameters.` The way to get around this is to leverage [declaration merging](https://www.typescriptlang.org/docs/handbook/declaration-merging.html), and a slightly different mixing function from ts-mixer: `mix`. It works exactly like `Mixin`, except it's a decorator, which means it doesn't affect the type information of the class being decorated. See it in action below: ```typescript import { mix } from 'ts-mixer'; class Foo<T> { public fooMethod(input: T): T { return input; } } class Bar<T> { public barMethod(input: T): T { return input; } } interface FooBar<T1, T2> extends Foo<T1>, Bar<T2> { } @mix(Foo, Bar) class FooBar<T1, T2> { public fooBarMethod(input1: T1, input2: T2) { return [this.fooMethod(input1), this.barMethod(input2)]; } } ``` Key takeaways from this example: * `interface FooBar<T1, T2> extends Foo<T1>, Bar<T2> { }` makes sure `FooBar` has the typing we want, thanks to declaration merging * `@mix(Foo, Bar)` wires things up "on the JavaScript side", since the interface declaration has nothing to do with runtime behavior. * The reason we have to use the `mix` decorator is that the typing produced by `Mixin(Foo, Bar)` would conflict with the typing of the interface. `mix` has no effect "on the TypeScript side," thus avoiding type conflicts. ### Mixing with Decorators Popular libraries such as [class-validator](https://github.com/typestack/class-validator) and [TypeORM](https://github.com/typeorm/typeorm) use decorators to add functionality. Unfortunately, `ts-mixer` has no way of knowing what these libraries do with the decorators behind the scenes. So if you want these decorators to be "inherited" with classes you plan to mix, you first have to wrap them with a special `decorate` function exported by `ts-mixer`. Here's an example using `class-validator`: ```typescript import { IsBoolean, IsIn, validate } from 'class-validator'; import { Mixin, decorate } from 'ts-mixer'; class Disposable { @decorate(IsBoolean()) // instead of @IsBoolean() isDisposed: boolean = false; } class Statusable { @decorate(IsIn(['red', 'green'])) // instead of @IsIn(['red', 'green']) status: string = 'green'; } class ExtendedObject extends Mixin(Disposable, Statusable) {} const extendedObject = new ExtendedObject(); extendedObject.status = 'blue'; validate(extendedObject).then(errors => { console.log(errors); }); ``` ### Dealing with Constructors As mentioned in the [caveats section](#caveats), ES6 disallowed calling constructor functions without `new`. This means that the only way for `ts-mixer` to mix instance properties is to instantiate each base class separately, then copy the instance properties into a common object. The consequence of this is that constructors mixed by `ts-mixer` will _not_ receive the proper `this`. **This very well may not be an issue for you!** It only means that your constructors need to be "mostly pure" in terms of how they handle `this`. Specifically, your constructors cannot produce [side effects](https://en.wikipedia.org/wiki/Side_effect_%28computer_science%29) involving `this`, _other than adding properties to `this`_ (the most common side effect in JavaScript constructors). If you simply cannot eliminate `this` side effects from your constructor, there is a workaround available: `ts-mixer` will automatically forward constructor parameters to a predesignated init function (`settings.initFunction`) if it's present on the class. Unlike constructors, functions can be called with an arbitrary `this`, so this predesignated init function _will_ have the proper `this`. Here's a basic example: ```typescript import { Mixin, settings } from 'ts-mixer'; settings.initFunction = 'init'; class Person { public static allPeople: Set<Person> = new Set(); protected init() { Person.allPeople.add(this); } } type PartyAffiliation = 'democrat' | 'republican'; class PoliticalParticipant { public static democrats: Set<PoliticalParticipant> = new Set(); public static republicans: Set<PoliticalParticipant> = new Set(); public party: PartyAffiliation; // note that these same args will also be passed to init function public constructor(party: PartyAffiliation) { this.party = party; } protected init(party: PartyAffiliation) { if (party === 'democrat') PoliticalParticipant.democrats.add(this); else PoliticalParticipant.republicans.add(this); } } class Voter extends Mixin(Person, PoliticalParticipant) {} const v1 = new Voter('democrat'); const v2 = new Voter('democrat'); const v3 = new Voter('republican'); const v4 = new Voter('republican'); ``` Note the above `.add(this)` statements. These would not work as expected if they were placed in the constructor instead, since `this` is not the same between the constructor and `init`, as explained above. ## Other Features ### hasMixin As mentioned above, `ts-mixer` does not support `instanceof` for mixins. While it is possible to implement [custom `instanceof` behavior](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol/hasInstance), this library does not do so because it would require modifying the source classes, which is deliberately avoided. You can fill this missing functionality with `hasMixin(instance, mixinClass)` instead. See the below example: ```typescript import { Mixin, hasMixin } from 'ts-mixer'; class Foo {} class Bar {} class FooBar extends Mixin(Foo, Bar) {} const instance = new FooBar(); // doesn't work with instanceof... console.log(instance instanceof FooBar) // true console.log(instance instanceof Foo) // false console.log(instance instanceof Bar) // false // but everything works nicely with hasMixin! console.log(hasMixin(instance, FooBar)) // true console.log(hasMixin(instance, Foo)) // true console.log(hasMixin(instance, Bar)) // true ``` `hasMixin(instance, mixinClass)` will work anywhere that `instance instanceof mixinClass` works. Additionally, like `instanceof`, you get the same [type narrowing benefits](https://www.typescriptlang.org/docs/handbook/advanced-types.html#instanceof-type-guards): ```typescript if (hasMixin(instance, Foo)) { // inferred type of instance is "Foo" } if (hasMixin(instance, Bar)) { // inferred type of instance of "Bar" } ``` ## Settings ts-mixer has multiple strategies for mixing classes which can be configured by modifying `settings` from ts-mixer. For example: ```typescript import { settings, Mixin } from 'ts-mixer'; settings.prototypeStrategy = 'proxy'; // then use `Mixin` as normal... ``` ### `settings.prototypeStrategy` * Determines how ts-mixer will mix class prototypes together * Possible values: - `'copy'` (default) - Copies all methods from the classes being mixed into a new prototype object. (This will include all methods up the prototype chains as well.) This is the default for ES5 compatibility, but it has the downside of stale references. For example, if you mix `Foo` and `Bar` to make `FooBar`, then redefine a method on `Foo`, `FooBar` will not have the latest methods from `Foo`. If this is not a concern for you, `'copy'` is the best value for this setting. - `'proxy'` - Uses an ES6 Proxy to "soft mix" prototypes. Unlike `'copy'`, updates to the base classes _will_ be reflected in the mixed class, which may be desirable. The downside is that method access is not as performant, nor is it ES5 compatible. ### `settings.staticsStrategy` * Determines how static properties are inherited * Possible values: - `'copy'` (default) - Simply copies all properties (minus `prototype`) from the base classes/constructor functions onto the mixed class. Like `settings.prototypeStrategy = 'copy'`, this strategy also suffers from stale references, but shouldn't be a concern if you don't redefine static methods after mixing. - `'proxy'` - Similar to `settings.prototypeStrategy`, proxy's static method access to base classes. Has the same benefits/downsides. ### `settings.initFunction` * If set, `ts-mixer` will automatically call the function with this name upon construction * Possible values: - `null` (default) - disables the behavior - a string - function name to call upon construction * Read more about why you would want this in [dealing with constructors](#dealing-with-constructors) ### `settings.decoratorInheritance` * Determines how decorators are inherited from classes passed to `Mixin(...)` * Possible values: - `'deep'` (default) - Deeply inherits decorators from all given classes and their ancestors - `'direct'` - Only inherits decorators defined directly on the given classes - `'none'` - Skips decorator inheritance # Author Tanner Nielsen <tannerntannern@gmail.com> * Website - [tannernielsen.com](http://tannernielsen.com) * Github - [tannerntannern](https://github.com/tannerntannern) USB Library for Node.JS =============================== [](https://github.com/node-usb/node-usb/actions) Node.JS library for communicating with USB devices in JavaScript / CoffeeScript. This is a refactoring / rewrite of Christopher Klein's [node-usb](https://github.com/schakko/node-usb). The API is not compatible (hopefully you find it an improvement). It's based entirely on libusb's asynchronous API for better efficiency, and provides a stream API for continuously streaming data or events. Installation ============ Libusb is included as a submodule. On Linux, you'll need libudev to build libusb. On Ubuntu/Debian: `sudo apt-get install build-essential libudev-dev` Then, just run npm install usb to install from npm. See the bottom of this page for instructions for building from a git checkout. ### Windows Use [Zadig](http://zadig.akeo.ie/) to install the WinUSB driver for your USB device. Otherwise you will get `LIBUSB_ERROR_NOT_SUPPORTED` when attempting to open devices. API === var usb = require('usb') usb --- Top-level object. ### usb.getDeviceList() Return a list of `Device` objects for the USB devices attached to the system. ### usb.findByIds(vid, pid) Convenience method to get the first device with the specified VID and PID, or `undefined` if no such device is present. ### usb.LIBUSB_* Constant properties from libusb ### usb.setDebugLevel(level : int) Set the libusb debug level (between 0 and 4) Device ------ Represents a USB device. ### .busNumber Integer USB device number ### .deviceAddress Integer USB device address ### .portNumbers Array containing the USB device port numbers, or `undefined` if not supported on this platform. ### .deviceDescriptor Object with properties for the fields of the device descriptor: - bLength - bDescriptorType - bcdUSB - bDeviceClass - bDeviceSubClass - bDeviceProtocol - bMaxPacketSize0 - idVendor - idProduct - bcdDevice - iManufacturer - iProduct - iSerialNumber - bNumConfigurations ### .configDescriptor Object with properties for the fields of the configuration descriptor: - bLength - bDescriptorType - wTotalLength - bNumInterfaces - bConfigurationValue - iConfiguration - bmAttributes - bMaxPower - extra (Buffer containing any extra data or additional descriptors) ### .allConfigDescriptors Contains all config descriptors of the device (same structure as .configDescriptor above) ### .parent Contains the parent of the device, such as a hub. If there is no parent this property is set to `null`. ### .open() Open the device. All methods below require the device to be open before use. ### .close() Close the device. ### .controlTransfer(bmRequestType, bRequest, wValue, wIndex, data_or_length, callback(error, data)) Perform a control transfer with `libusb_control_transfer`. Parameter `data_or_length` can be a integer length for an IN transfer, or a Buffer for an out transfer. The type must match the direction specified in the MSB of bmRequestType. The `data` parameter of the callback is always undefined for OUT transfers, or will be passed a Buffer for IN transfers. A [package is available to calculate bmRequestType](https://www.npmjs.com/package/bmrequesttype) if needed. ### .setConfiguration(id, callback(error)) Set the device configuration to something other than the default (0). To use this, first call `.open(false)` (which tells it not to auto configure), then before claiming an interface, call this method. ### .getStringDescriptor(index, callback(error, data)) Perform a control transfer to retrieve a string descriptor ### .getBosDescriptor(callback(error, bosDescriptor)) Perform a control transfer to retrieve an object with properties for the fields of the Binary Object Store descriptor: - bLength - bDescriptorType - wTotalLength - bNumDeviceCaps ### .getCapabilities(callback(error, capabilities)) Retrieve a list of Capability objects for the Binary Object Store capabilities of the device. ### .interface(interface) Return the interface with the specified interface number. ### .interfaces List of Interface objects for the interfaces of the default configuration of the device. ### .timeout Timeout in milliseconds to use for control transfers. ### .reset(callback(error)) Performs a reset of the device. Callback is called when complete. Interface --------- ### .endpoint(address) Return the InEndpoint or OutEndpoint with the specified address. ### .endpoints List of endpoints on this interface: InEndpoint and OutEndpoint objects. ### .interface Integer interface number. ### .altSetting Integer alternate setting number. ### .setAltSetting(altSetting, callback(error)) Sets the alternate setting. It updates the `interface.endpoints` array to reflect the endpoints found in the alternate setting. ### .claim() Claims the interface. This method must be called before using any endpoints of this interface. ### .release([closeEndpoints], callback(error)) Releases the interface and resets the alternate setting. Calls callback when complete. It is an error to release an interface with pending transfers. If the optional closeEndpoints parameter is true, any active endpoint streams are stopped (see `Endpoint.stopStream`), and the interface is released after the stream transfers are cancelled. Transfers submitted individually with `Endpoint.transfer` are not affected by this parameter. ### .isKernelDriverActive() Returns `false` if a kernel driver is not active; `true` if active. ### .detachKernelDriver() Detaches the kernel driver from the interface. ### .attachKernelDriver() Re-attaches the kernel driver for the interface. ### .descriptor Object with fields from the interface descriptor -- see libusb documentation or USB spec. - bLength - bDescriptorType - bInterfaceNumber - bAlternateSetting - bNumEndpoints - bInterfaceClass - bInterfaceSubClass - bInterfaceProtocol - iInterface - extra (Buffer containing any extra data or additional descriptors) Capability --------- ### .type Integer capability type. ### .data Buffer capability data. ### .descriptor Object with fields from the capability descriptor -- see libusb documentation or USB spec. - bLength - bDescriptorType - bDevCapabilityType Endpoint -------- Common base for InEndpoint and OutEndpoint, see below. ### .direction Endpoint direction: `"in"` or `"out"`. ### .transferType Endpoint type: `usb.LIBUSB_TRANSFER_TYPE_BULK`, `usb.LIBUSB_TRANSFER_TYPE_INTERRUPT`, or `usb.LIBUSB_TRANSFER_TYPE_ISOCHRONOUS`. ### .descriptor Object with fields from the endpoint descriptor -- see libusb documentation or USB spec. - bLength - bDescriptorType - bEndpointAddress - bmAttributes - wMaxPacketSize - bInterval - bRefresh - bSynchAddress - extra (Buffer containing any extra data or additional descriptors) ### .timeout Sets the timeout in milliseconds for transfers on this endpoint. The default, `0`, is infinite timeout. ### .clearHalt(callback(error)) Clear the halt/stall condition for this endpoint. InEndpoint ---------- Endpoints in the IN direction (device->PC) have this type. ### .transfer(length, callback(error, data)) Perform a transfer to read data from the endpoint. If length is greater than maxPacketSize, libusb will automatically split the transfer in multiple packets, and you will receive one callback with all data once all packets are complete. `this` in the callback is the InEndpoint object. ### .startPoll(nTransfers=3, transferSize=maxPacketSize) Start polling the endpoint. The library will keep `nTransfers` transfers of size `transferSize` pending in the kernel at all times to ensure continuous data flow. This is handled by the libusb event thread, so it continues even if the Node v8 thread is busy. The `data` and `error` events are emitted as transfers complete. ### .stopPoll(cb) Stop polling. Further data may still be received. The `end` event is emitted and the callback is called once all transfers have completed or canceled. ### Event: data(data : Buffer) Emitted with data received by the polling transfers ### Event: error(error) Emitted when polling encounters an error. All in flight transfers will be automatically canceled and no further polling will be done. You have to wait for the `end` event before you can start polling again. ### Event: end Emitted when polling has been canceled OutEndpoint ----------- Endpoints in the OUT direction (PC->device) have this type. ### .transfer(data, callback(error)) Perform a transfer to write `data` to the endpoint. If length is greater than maxPacketSize, libusb will automatically split the transfer in multiple packets, and you will receive one callback once all packets are complete. `this` in the callback is the OutEndpoint object. ### Event: error(error) Emitted when the stream encounters an error. ### Event: end Emitted when the stream has been stopped and all pending requests have been completed. UsbDetection ------------ ### usb.on('attach', function(device) { ... }); Attaches a callback to plugging in a `device`. ### usb.on('detach', function(device) { ... }); Attaches a callback to unplugging a `device`. ### usb.refHotplugEvents(); Restore (re-reference) the hotplug events unreferenced by `unrefHotplugEvents()` ### usb.unrefHotplugEvents(); Listening to events will prevent the process to exit. By calling this function, hotplug events will be unreferenced by the event loop, allowing the process to exit even when listening for the `attach` and `detach` events. Development and testing ======================= To build from git: git clone --recursive https://github.com/node-usb/node-usb.git cd node-usb npm install To execute the unit tests, [CoffeeScript](http://coffeescript.org) is required. Run npm test Some tests require an [attached STM32F103 Microprocessor USB device with specific firmware](https://github.com/thegecko/node-usb-test-firmware). npm run --silent full-test npm run --silent valgrind Limitations =========== Does not support: - Configurations other than the default one - Isochronous transfers License ======= MIT Note that the compiled Node extension includes Libusb, and is thus subject to the LGPL. # Near Bindings Generator Transforms the Assembyscript AST to serialize exported functions and add `encode` and `decode` functions for generating and parsing JSON strings. ## Using via CLI After installling, `npm install nearprotocol/near-bindgen-as`, it can be added to the cli arguments of the assemblyscript compiler you must add the following: ```bash asc <file> --transform near-bindgen-as ... ``` This module also adds a binary `near-asc` which adds the default arguments required to build near contracts as well as the transformer. ```bash near-asc <input file> <output file> ``` ## Using a script to compile Another way is to add a file such as `asconfig.js` such as: ```js const compile = require("near-bindgen-as/compiler").compile; compile("assembly/index.ts", // input file "out/index.wasm", // output file [ // "-O1", // Optional arguments "--debug", "--measure" ], // Prints out the final cli arguments passed to compiler. {verbose: true} ); ``` It can then be built with `node asconfig.js`. There is an example of this in the test directory. # Statuses [![NPM Version][npm-image]][npm-url] [![NPM Downloads][downloads-image]][downloads-url] [![Node.js Version][node-version-image]][node-version-url] [![Build Status][travis-image]][travis-url] [![Test Coverage][coveralls-image]][coveralls-url] HTTP status utility for node. This module provides a list of status codes and messages sourced from a few different projects: * The [IANA Status Code Registry](https://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml) * The [Node.js project](https://nodejs.org/) * The [NGINX project](https://www.nginx.com/) * The [Apache HTTP Server project](https://httpd.apache.org/) ## Installation This is a [Node.js](https://nodejs.org/en/) module available through the [npm registry](https://www.npmjs.com/). Installation is done using the [`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally): ```sh $ npm install statuses ``` ## API <!-- eslint-disable no-unused-vars --> ```js var status = require('statuses') ``` ### var code = status(Integer || String) If `Integer` or `String` is a valid HTTP code or status message, then the appropriate `code` will be returned. Otherwise, an error will be thrown. <!-- eslint-disable no-undef --> ```js status(403) // => 403 status('403') // => 403 status('forbidden') // => 403 status('Forbidden') // => 403 status(306) // throws, as it's not supported by node.js ``` ### status.STATUS_CODES Returns an object which maps status codes to status messages, in the same format as the [Node.js http module](https://nodejs.org/dist/latest/docs/api/http.html#http_http_status_codes). ### status.codes Returns an array of all the status codes as `Integer`s. ### var msg = status[code] Map of `code` to `status message`. `undefined` for invalid `code`s. <!-- eslint-disable no-undef, no-unused-expressions --> ```js status[404] // => 'Not Found' ``` ### var code = status[msg] Map of `status message` to `code`. `msg` can either be title-cased or lower-cased. `undefined` for invalid `status message`s. <!-- eslint-disable no-undef, no-unused-expressions --> ```js status['not found'] // => 404 status['Not Found'] // => 404 ``` ### status.redirect[code] Returns `true` if a status code is a valid redirect status. <!-- eslint-disable no-undef, no-unused-expressions --> ```js status.redirect[200] // => undefined status.redirect[301] // => true ``` ### status.empty[code] Returns `true` if a status code expects an empty body. <!-- eslint-disable no-undef, no-unused-expressions --> ```js status.empty[200] // => undefined status.empty[204] // => true status.empty[304] // => true ``` ### status.retry[code] Returns `true` if you should retry the rest. <!-- eslint-disable no-undef, no-unused-expressions --> ```js status.retry[501] // => undefined status.retry[503] // => true ``` [npm-image]: https://img.shields.io/npm/v/statuses.svg [npm-url]: https://npmjs.org/package/statuses [node-version-image]: https://img.shields.io/node/v/statuses.svg [node-version-url]: https://nodejs.org/en/download [travis-image]: https://img.shields.io/travis/jshttp/statuses.svg [travis-url]: https://travis-ci.org/jshttp/statuses [coveralls-image]: https://img.shields.io/coveralls/jshttp/statuses.svg [coveralls-url]: https://coveralls.io/r/jshttp/statuses?branch=master [downloads-image]: https://img.shields.io/npm/dm/statuses.svg [downloads-url]: https://npmjs.org/package/statuses # v8-compile-cache [](https://travis-ci.org/zertosh/v8-compile-cache) `v8-compile-cache` attaches a `require` hook to use [V8's code cache](https://v8project.blogspot.com/2015/07/code-caching.html) to speed up instantiation time. The "code cache" is the work of parsing and compiling done by V8. The ability to tap into V8 to produce/consume this cache was introduced in [Node v5.7.0](https://nodejs.org/en/blog/release/v5.7.0/). ## Usage 1. Add the dependency: ```sh $ npm install --save v8-compile-cache ``` 2. Then, in your entry module add: ```js require('v8-compile-cache'); ``` **Requiring `v8-compile-cache` in Node <5.7.0 is a noop – but you need at least Node 4.0.0 to support the ES2015 syntax used by `v8-compile-cache`.** ## Options Set the environment variable `DISABLE_V8_COMPILE_CACHE=1` to disable the cache. Cache directory is defined by environment variable `V8_COMPILE_CACHE_CACHE_DIR` or defaults to `<os.tmpdir()>/v8-compile-cache-<V8_VERSION>`. ## Internals Cache files are suffixed `.BLOB` and `.MAP` corresponding to the entry module that required `v8-compile-cache`. The cache is _entry module specific_ because it is faster to load the entire code cache into memory at once, than it is to read it from disk on a file-by-file basis. ## Benchmarks See https://github.com/zertosh/v8-compile-cache/tree/master/bench. **Load Times:** | Module | Without Cache | With Cache | | ---------------- | -------------:| ----------:| | `babel-core` | `218ms` | `185ms` | | `yarn` | `153ms` | `113ms` | | `yarn` (bundled) | `228ms` | `105ms` | _^ Includes the overhead of loading the cache itself._ ## Acknowledgements * `FileSystemBlobStore` and `NativeCompileCache` are based on Atom's implementation of their v8 compile cache: - https://github.com/atom/atom/blob/b0d7a8a/src/file-system-blob-store.js - https://github.com/atom/atom/blob/b0d7a8a/src/native-compile-cache.js * `mkdirpSync` is based on: - https://github.com/substack/node-mkdirp/blob/f2003bb/index.js#L55-L98 # tslib This is a runtime library for [TypeScript](http://www.typescriptlang.org/) that contains all of the TypeScript helper functions. This library is primarily used by the `--importHelpers` flag in TypeScript. When using `--importHelpers`, a module that uses helper functions like `__extends` and `__assign` in the following emitted file: ```ts var __assign = (this && this.__assign) || Object.assign || function(t) { for (var s, i = 1, n = arguments.length; i < n; i++) { s = arguments[i]; for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p]; } return t; }; exports.x = {}; exports.y = __assign({}, exports.x); ``` will instead be emitted as something like the following: ```ts var tslib_1 = require("tslib"); exports.x = {}; exports.y = tslib_1.__assign({}, exports.x); ``` Because this can avoid duplicate declarations of things like `__extends`, `__assign`, etc., this means delivering users smaller files on average, as well as less runtime overhead. For optimized bundles with TypeScript, you should absolutely consider using `tslib` and `--importHelpers`. # Installing For the latest stable version, run: ## npm ```sh # TypeScript 2.3.3 or later npm install tslib # TypeScript 2.3.2 or earlier npm install tslib@1.6.1 ``` ## yarn ```sh # TypeScript 2.3.3 or later yarn add tslib # TypeScript 2.3.2 or earlier yarn add tslib@1.6.1 ``` ## bower ```sh # TypeScript 2.3.3 or later bower install tslib # TypeScript 2.3.2 or earlier bower install tslib@1.6.1 ``` ## JSPM ```sh # TypeScript 2.3.3 or later jspm install tslib # TypeScript 2.3.2 or earlier jspm install tslib@1.6.1 ``` # Usage Set the `importHelpers` compiler option on the command line: ``` tsc --importHelpers file.ts ``` or in your tsconfig.json: ```json { "compilerOptions": { "importHelpers": true } } ``` #### For bower and JSPM users You will need to add a `paths` mapping for `tslib`, e.g. For Bower users: ```json { "compilerOptions": { "module": "amd", "importHelpers": true, "baseUrl": "./", "paths": { "tslib" : ["bower_components/tslib/tslib.d.ts"] } } } ``` For JSPM users: ```json { "compilerOptions": { "module": "system", "importHelpers": true, "baseUrl": "./", "paths": { "tslib" : ["jspm_packages/npm/tslib@1.[version].0/tslib.d.ts"] } } } ``` # Contribute There are many ways to [contribute](https://github.com/Microsoft/TypeScript/blob/master/CONTRIBUTING.md) to TypeScript. * [Submit bugs](https://github.com/Microsoft/TypeScript/issues) and help us verify fixes as they are checked in. * Review the [source code changes](https://github.com/Microsoft/TypeScript/pulls). * Engage with other TypeScript users and developers on [StackOverflow](http://stackoverflow.com/questions/tagged/typescript). * Join the [#typescript](http://twitter.com/#!/search/realtime/%23typescript) discussion on Twitter. * [Contribute bug fixes](https://github.com/Microsoft/TypeScript/blob/master/CONTRIBUTING.md). # Documentation * [Quick tutorial](http://www.typescriptlang.org/Tutorial) * [Programming handbook](http://www.typescriptlang.org/Handbook) * [Homepage](http://www.typescriptlang.org/) # near-sdk-core This package contain a convenient interface for interacting with NEAR's host runtime. To see the functions that are provided by the host node see [`env.ts`](./assembly/env/env.ts). # yallist Yet Another Linked List There are many doubly-linked list implementations like it, but this one is mine. For when an array would be too big, and a Map can't be iterated in reverse order. [](https://travis-ci.org/isaacs/yallist) [](https://coveralls.io/github/isaacs/yallist) ## basic usage ```javascript var yallist = require('yallist') var myList = yallist.create([1, 2, 3]) myList.push('foo') myList.unshift('bar') // of course pop() and shift() are there, too console.log(myList.toArray()) // ['bar', 1, 2, 3, 'foo'] myList.forEach(function (k) { // walk the list head to tail }) myList.forEachReverse(function (k, index, list) { // walk the list tail to head }) var myDoubledList = myList.map(function (k) { return k + k }) // now myDoubledList contains ['barbar', 2, 4, 6, 'foofoo'] // mapReverse is also a thing var myDoubledListReverse = myList.mapReverse(function (k) { return k + k }) // ['foofoo', 6, 4, 2, 'barbar'] var reduced = myList.reduce(function (set, entry) { set += entry return set }, 'start') console.log(reduced) // 'startfoo123bar' ``` ## api The whole API is considered "public". Functions with the same name as an Array method work more or less the same way. There's reverse versions of most things because that's the point. ### Yallist Default export, the class that holds and manages a list. Call it with either a forEach-able (like an array) or a set of arguments, to initialize the list. The Array-ish methods all act like you'd expect. No magic length, though, so if you change that it won't automatically prune or add empty spots. ### Yallist.create(..) Alias for Yallist function. Some people like factories. #### yallist.head The first node in the list #### yallist.tail The last node in the list #### yallist.length The number of nodes in the list. (Change this at your peril. It is not magic like Array length.) #### yallist.toArray() Convert the list to an array. #### yallist.forEach(fn, [thisp]) Call a function on each item in the list. #### yallist.forEachReverse(fn, [thisp]) Call a function on each item in the list, in reverse order. #### yallist.get(n) Get the data at position `n` in the list. If you use this a lot, probably better off just using an Array. #### yallist.getReverse(n) Get the data at position `n`, counting from the tail. #### yallist.map(fn, thisp) Create a new Yallist with the result of calling the function on each item. #### yallist.mapReverse(fn, thisp) Same as `map`, but in reverse. #### yallist.pop() Get the data from the list tail, and remove the tail from the list. #### yallist.push(item, ...) Insert one or more items to the tail of the list. #### yallist.reduce(fn, initialValue) Like Array.reduce. #### yallist.reduceReverse Like Array.reduce, but in reverse. #### yallist.reverse Reverse the list in place. #### yallist.shift() Get the data from the list head, and remove the head from the list. #### yallist.slice([from], [to]) Just like Array.slice, but returns a new Yallist. #### yallist.sliceReverse([from], [to]) Just like yallist.slice, but the result is returned in reverse. #### yallist.toArray() Create an array representation of the list. #### yallist.toArrayReverse() Create a reversed array representation of the list. #### yallist.unshift(item, ...) Insert one or more items to the head of the list. #### yallist.unshiftNode(node) Move a Node object to the front of the list. (That is, pull it out of wherever it lives, and make it the new head.) If the node belongs to a different list, then that list will remove it first. #### yallist.pushNode(node) Move a Node object to the end of the list. (That is, pull it out of wherever it lives, and make it the new tail.) If the node belongs to a list already, then that list will remove it first. #### yallist.removeNode(node) Remove a node from the list, preserving referential integrity of head and tail and other nodes. Will throw an error if you try to have a list remove a node that doesn't belong to it. ### Yallist.Node The class that holds the data and is actually the list. Call with `var n = new Node(value, previousNode, nextNode)` Note that if you do direct operations on Nodes themselves, it's very easy to get into weird states where the list is broken. Be careful :) #### node.next The next node in the list. #### node.prev The previous node in the list. #### node.value The data the node contains. #### node.list The list to which this node belongs. (Null if it does not belong to any list.) # <img src="./logo.png" alt="bn.js" width="160" height="160" /> > BigNum in pure javascript [](http://travis-ci.org/indutny/bn.js) ## Install `npm install --save bn.js` ## Usage ```js const BN = require('bn.js'); var a = new BN('dead', 16); var b = new BN('101010', 2); var res = a.add(b); console.log(res.toString(10)); // 57047 ``` **Note**: decimals are not supported in this library. ## Notation ### Prefixes There are several prefixes to instructions that affect the way the work. Here is the list of them in the order of appearance in the function name: * `i` - perform operation in-place, storing the result in the host object (on which the method was invoked). Might be used to avoid number allocation costs * `u` - unsigned, ignore the sign of operands when performing operation, or always return positive value. Second case applies to reduction operations like `mod()`. In such cases if the result will be negative - modulo will be added to the result to make it positive ### Postfixes * `n` - the argument of the function must be a plain JavaScript Number. Decimals are not supported. * `rn` - both argument and return value of the function are plain JavaScript Numbers. Decimals are not supported. ### Examples * `a.iadd(b)` - perform addition on `a` and `b`, storing the result in `a` * `a.umod(b)` - reduce `a` modulo `b`, returning positive value * `a.iushln(13)` - shift bits of `a` left by 13 ## Instructions Prefixes/postfixes are put in parens at the of the line. `endian` - could be either `le` (little-endian) or `be` (big-endian). ### Utilities * `a.clone()` - clone number * `a.toString(base, length)` - convert to base-string and pad with zeroes * `a.toNumber()` - convert to Javascript Number (limited to 53 bits) * `a.toJSON()` - convert to JSON compatible hex string (alias of `toString(16)`) * `a.toArray(endian, length)` - convert to byte `Array`, and optionally zero pad to length, throwing if already exceeding * `a.toArrayLike(type, endian, length)` - convert to an instance of `type`, which must behave like an `Array` * `a.toBuffer(endian, length)` - convert to Node.js Buffer (if available). For compatibility with browserify and similar tools, use this instead: `a.toArrayLike(Buffer, endian, length)` * `a.bitLength()` - get number of bits occupied * `a.zeroBits()` - return number of less-significant consequent zero bits (example: `1010000` has 4 zero bits) * `a.byteLength()` - return number of bytes occupied * `a.isNeg()` - true if the number is negative * `a.isEven()` - no comments * `a.isOdd()` - no comments * `a.isZero()` - no comments * `a.cmp(b)` - compare numbers and return `-1` (a `<` b), `0` (a `==` b), or `1` (a `>` b) depending on the comparison result (`ucmp`, `cmpn`) * `a.lt(b)` - `a` less than `b` (`n`) * `a.lte(b)` - `a` less than or equals `b` (`n`) * `a.gt(b)` - `a` greater than `b` (`n`) * `a.gte(b)` - `a` greater than or equals `b` (`n`) * `a.eq(b)` - `a` equals `b` (`n`) * `a.toTwos(width)` - convert to two's complement representation, where `width` is bit width * `a.fromTwos(width)` - convert from two's complement representation, where `width` is the bit width * `BN.isBN(object)` - returns true if the supplied `object` is a BN.js instance * `BN.max(a, b)` - return `a` if `a` bigger than `b` * `BN.min(a, b)` - return `a` if `a` less than `b` ### Arithmetics * `a.neg()` - negate sign (`i`) * `a.abs()` - absolute value (`i`) * `a.add(b)` - addition (`i`, `n`, `in`) * `a.sub(b)` - subtraction (`i`, `n`, `in`) * `a.mul(b)` - multiply (`i`, `n`, `in`) * `a.sqr()` - square (`i`) * `a.pow(b)` - raise `a` to the power of `b` * `a.div(b)` - divide (`divn`, `idivn`) * `a.mod(b)` - reduct (`u`, `n`) (but no `umodn`) * `a.divmod(b)` - quotient and modulus obtained by dividing * `a.divRound(b)` - rounded division ### Bit operations * `a.or(b)` - or (`i`, `u`, `iu`) * `a.and(b)` - and (`i`, `u`, `iu`, `andln`) (NOTE: `andln` is going to be replaced with `andn` in future) * `a.xor(b)` - xor (`i`, `u`, `iu`) * `a.setn(b, value)` - set specified bit to `value` * `a.shln(b)` - shift left (`i`, `u`, `iu`) * `a.shrn(b)` - shift right (`i`, `u`, `iu`) * `a.testn(b)` - test if specified bit is set * `a.maskn(b)` - clear bits with indexes higher or equal to `b` (`i`) * `a.bincn(b)` - add `1 << b` to the number * `a.notn(w)` - not (for the width specified by `w`) (`i`) ### Reduction * `a.gcd(b)` - GCD * `a.egcd(b)` - Extended GCD results (`{ a: ..., b: ..., gcd: ... }`) * `a.invm(b)` - inverse `a` modulo `b` ## Fast reduction When doing lots of reductions using the same modulo, it might be beneficial to use some tricks: like [Montgomery multiplication][0], or using special algorithm for [Mersenne Prime][1]. ### Reduction context To enable this tricks one should create a reduction context: ```js var red = BN.red(num); ``` where `num` is just a BN instance. Or: ```js var red = BN.red(primeName); ``` Where `primeName` is either of these [Mersenne Primes][1]: * `'k256'` * `'p224'` * `'p192'` * `'p25519'` Or: ```js var red = BN.mont(num); ``` To reduce numbers with [Montgomery trick][0]. `.mont()` is generally faster than `.red(num)`, but slower than `BN.red(primeName)`. ### Converting numbers Before performing anything in reduction context - numbers should be converted to it. Usually, this means that one should: * Convert inputs to reducted ones * Operate on them in reduction context * Convert outputs back from the reduction context Here is how one may convert numbers to `red`: ```js var redA = a.toRed(red); ``` Where `red` is a reduction context created using instructions above Here is how to convert them back: ```js var a = redA.fromRed(); ``` ### Red instructions Most of the instructions from the very start of this readme have their counterparts in red context: * `a.redAdd(b)`, `a.redIAdd(b)` * `a.redSub(b)`, `a.redISub(b)` * `a.redShl(num)` * `a.redMul(b)`, `a.redIMul(b)` * `a.redSqr()`, `a.redISqr()` * `a.redSqrt()` - square root modulo reduction context's prime * `a.redInvm()` - modular inverse of the number * `a.redNeg()` * `a.redPow(b)` - modular exponentiation ### Number Size Optimized for elliptic curves that work with 256-bit numbers. There is no limitation on the size of the numbers. ## LICENSE This software is licensed under the MIT License. [0]: https://en.wikipedia.org/wiki/Montgomery_modular_multiplication [1]: https://en.wikipedia.org/wiki/Mersenne_prime # signal-exit [](https://travis-ci.org/tapjs/signal-exit) [](https://coveralls.io/r/tapjs/signal-exit?branch=master) [](https://www.npmjs.com/package/signal-exit) [](https://github.com/conventional-changelog/standard-version) When you want to fire an event no matter how a process exits: * reaching the end of execution. * explicitly having `process.exit(code)` called. * having `process.kill(pid, sig)` called. * receiving a fatal signal from outside the process Use `signal-exit`. ```js var onExit = require('signal-exit') onExit(function (code, signal) { console.log('process exited!') }) ``` ## API `var remove = onExit(function (code, signal) {}, options)` The return value of the function is a function that will remove the handler. Note that the function *only* fires for signals if the signal would cause the process to exit. That is, there are no other listeners, and it is a fatal signal. ## Options * `alwaysLast`: Run this handler after any other signal or exit handlers. This causes `process.emit` to be monkeypatched. # lru cache A cache object that deletes the least-recently-used items. [](https://travis-ci.org/isaacs/node-lru-cache) [](https://coveralls.io/github/isaacs/node-lru-cache) ## Installation: ```javascript npm install lru-cache --save ``` ## Usage: ```javascript var LRU = require("lru-cache") , options = { max: 500 , length: function (n, key) { return n * 2 + key.length } , dispose: function (key, n) { n.close() } , maxAge: 1000 * 60 * 60 } , cache = new LRU(options) , otherCache = new LRU(50) // sets just the max size cache.set("key", "value") cache.get("key") // "value" // non-string keys ARE fully supported // but note that it must be THE SAME object, not // just a JSON-equivalent object. var someObject = { a: 1 } cache.set(someObject, 'a value') // Object keys are not toString()-ed cache.set('[object Object]', 'a different value') assert.equal(cache.get(someObject), 'a value') // A similar object with same keys/values won't work, // because it's a different object identity assert.equal(cache.get({ a: 1 }), undefined) cache.reset() // empty the cache ``` If you put more stuff in it, then items will fall out. If you try to put an oversized thing in it, then it'll fall out right away. ## Options * `max` The maximum size of the cache, checked by applying the length function to all values in the cache. Not setting this is kind of silly, since that's the whole purpose of this lib, but it defaults to `Infinity`. Setting it to a non-number or negative number will throw a `TypeError`. Setting it to 0 makes it be `Infinity`. * `maxAge` Maximum age in ms. Items are not pro-actively pruned out as they age, but if you try to get an item that is too old, it'll drop it and return undefined instead of giving it to you. Setting this to a negative value will make everything seem old! Setting it to a non-number will throw a `TypeError`. * `length` Function that is used to calculate the length of stored items. If you're storing strings or buffers, then you probably want to do something like `function(n, key){return n.length}`. The default is `function(){return 1}`, which is fine if you want to store `max` like-sized things. The item is passed as the first argument, and the key is passed as the second argumnet. * `dispose` Function that is called on items when they are dropped from the cache. This can be handy if you want to close file descriptors or do other cleanup tasks when items are no longer accessible. Called with `key, value`. It's called *before* actually removing the item from the internal cache, so if you want to immediately put it back in, you'll have to do that in a `nextTick` or `setTimeout` callback or it won't do anything. * `stale` By default, if you set a `maxAge`, it'll only actually pull stale items out of the cache when you `get(key)`. (That is, it's not pre-emptively doing a `setTimeout` or anything.) If you set `stale:true`, it'll return the stale value before deleting it. If you don't set this, then it'll return `undefined` when you try to get a stale entry, as if it had already been deleted. * `noDisposeOnSet` By default, if you set a `dispose()` method, then it'll be called whenever a `set()` operation overwrites an existing key. If you set this option, `dispose()` will only be called when a key falls out of the cache, not when it is overwritten. * `updateAgeOnGet` When using time-expiring entries with `maxAge`, setting this to `true` will make each item's effective time update to the current time whenever it is retrieved from cache, causing it to not expire. (It can still fall out of cache based on recency of use, of course.) ## API * `set(key, value, maxAge)` * `get(key) => value` Both of these will update the "recently used"-ness of the key. They do what you think. `maxAge` is optional and overrides the cache `maxAge` option if provided. If the key is not found, `get()` will return `undefined`. The key and val can be any value. * `peek(key)` Returns the key value (or `undefined` if not found) without updating the "recently used"-ness of the key. (If you find yourself using this a lot, you *might* be using the wrong sort of data structure, but there are some use cases where it's handy.) * `del(key)` Deletes a key out of the cache. * `reset()` Clear the cache entirely, throwing away all values. * `has(key)` Check if a key is in the cache, without updating the recent-ness or deleting it for being stale. * `forEach(function(value,key,cache), [thisp])` Just like `Array.prototype.forEach`. Iterates over all the keys in the cache, in order of recent-ness. (Ie, more recently used items are iterated over first.) * `rforEach(function(value,key,cache), [thisp])` The same as `cache.forEach(...)` but items are iterated over in reverse order. (ie, less recently used items are iterated over first.) * `keys()` Return an array of the keys in the cache. * `values()` Return an array of the values in the cache. * `length` Return total length of objects in cache taking into account `length` options function. * `itemCount` Return total quantity of objects currently in cache. Note, that `stale` (see options) items are returned as part of this item count. * `dump()` Return an array of the cache entries ready for serialization and usage with 'destinationCache.load(arr)`. * `load(cacheEntriesArray)` Loads another cache entries array, obtained with `sourceCache.dump()`, into the cache. The destination cache is reset before loading new entries * `prune()` Manually iterates over the entire cache proactively pruning old entries # pbkdf2 [](https://www.npmjs.org/package/pbkdf2) [](https://travis-ci.org/crypto-browserify/pbkdf2) [](https://david-dm.org/crypto-browserify/pbkdf2#info=dependencies) [](https://github.com/feross/standard) This library provides the functionality of PBKDF2 with the ability to use any supported hashing algorithm returned from `crypto.getHashes()` ## Usage ```js var pbkdf2 = require('pbkdf2') var derivedKey = pbkdf2.pbkdf2Sync('password', 'salt', 1, 32, 'sha512') ... ``` For more information on the API, please see the relevant [Node documentation](https://nodejs.org/api/crypto.html#crypto_crypto_pbkdf2_password_salt_iterations_keylen_digest_callback). For high performance, use the `async` variant (`pbkdf2.pbkdf2`), not `pbkdf2.pbkdf2Sync`, this variant has the oppurtunity to use `window.crypto.subtle` when browserified. ## Credits This module is a derivative of [cryptocoinjs/pbkdf2-sha256](https://github.com/cryptocoinjs/pbkdf2-sha256/), so thanks to [JP Richardson](https://github.com/jprichardson/) for laying the ground work. Thank you to [FangDun Cai](https://github.com/fundon) for donating the package name on npm, if you're looking for his previous module it is located at [fundon/pbkdf2](https://github.com/fundon/pbkdf2). # flat-cache > A stupidly simple key/value storage using files to persist the data [](https://npmjs.org/package/flat-cache) [](https://travis-ci.org/royriojas/flat-cache) ## install ```bash npm i --save flat-cache ``` ## Usage ```js var flatCache = require('flat-cache') // loads the cache, if one does not exists for the given // Id a new one will be prepared to be created var cache = flatCache.load('cacheId'); // sets a key on the cache cache.setKey('key', { foo: 'var' }); // get a key from the cache cache.getKey('key') // { foo: 'var' } // fetch the entire persisted object cache.all() // { 'key': { foo: 'var' } } // remove a key cache.removeKey('key'); // removes a key from the cache // save it to disk cache.save(); // very important, if you don't save no changes will be persisted. // cache.save( true /* noPrune */) // can be used to prevent the removal of non visited keys // loads the cache from a given directory, if one does // not exists for the given Id a new one will be prepared to be created var cache = flatCache.load('cacheId', path.resolve('./path/to/folder')); // The following methods are useful to clear the cache // delete a given cache flatCache.clearCacheById('cacheId') // removes the cacheId document if one exists. // delete all cache flatCache.clearAll(); // remove the cache directory ``` ## Motivation for this module I needed a super simple and dumb **in-memory cache** with optional disk persistance in order to make a script that will beutify files with `esformatter` only execute on the files that were changed since the last run. To make that possible we need to store the `fileSize` and `modificationTime` of the files. So a simple `key/value` storage was needed and Bam! this module was born. ## Important notes - If no directory is especified when the `load` method is called, a folder named `.cache` will be created inside the module directory when `cache.save` is called. If you're committing your `node_modules` to any vcs, you might want to ignore the default `.cache` folder, or specify a custom directory. - The values set on the keys of the cache should be `stringify-able` ones, meaning no circular references - All the changes to the cache state are done to memory - I could have used a timer or `Object.observe` to deliver the changes to disk, but I wanted to keep this module intentionally dumb and simple - Non visited keys are removed when `cache.save()` is called. If this is not desired, you can pass `true` to the save call like: `cache.save( true /* noPrune */ )`. ## License MIT ## Changelog [changelog](./changelog.md) # <img src="docs_app/assets/Rx_Logo_S.png" alt="RxJS Logo" width="86" height="86"> RxJS: Reactive Extensions For JavaScript [](https://circleci.com/gh/ReactiveX/rxjs/tree/6.x) [](http://badge.fury.io/js/%40reactivex%2Frxjs) [](https://gitter.im/Reactive-Extensions/RxJS?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) # RxJS 6 Stable ### MIGRATION AND RELEASE INFORMATION: Find out how to update to v6, **automatically update your TypeScript code**, and more! - [Current home is MIGRATION.md](./docs_app/content/guide/v6/migration.md) ### FOR V 5.X PLEASE GO TO [THE 5.0 BRANCH](https://github.com/ReactiveX/rxjs/tree/5.x) Reactive Extensions Library for JavaScript. This is a rewrite of [Reactive-Extensions/RxJS](https://github.com/Reactive-Extensions/RxJS) and is the latest production-ready version of RxJS. This rewrite is meant to have better performance, better modularity, better debuggable call stacks, while staying mostly backwards compatible, with some breaking changes that reduce the API surface. [Apache 2.0 License](LICENSE.txt) - [Code of Conduct](CODE_OF_CONDUCT.md) - [Contribution Guidelines](CONTRIBUTING.md) - [Maintainer Guidelines](doc_app/content/maintainer-guidelines.md) - [API Documentation](https://rxjs.dev/) ## Versions In This Repository - [master](https://github.com/ReactiveX/rxjs/commits/master) - This is all of the current, unreleased work, which is against v6 of RxJS right now - [stable](https://github.com/ReactiveX/rxjs/commits/stable) - This is the branch for the latest version you'd get if you do `npm install rxjs` ## Important By contributing or commenting on issues in this repository, whether you've read them or not, you're agreeing to the [Contributor Code of Conduct](CODE_OF_CONDUCT.md). Much like traffic laws, ignorance doesn't grant you immunity. ## Installation and Usage ### ES6 via npm ```sh npm install rxjs ``` It's recommended to pull in the Observable creation methods you need directly from `'rxjs'` as shown below with `range`. And you can pull in any operator you need from one spot, under `'rxjs/operators'`. ```ts import { range } from "rxjs"; import { map, filter } from "rxjs/operators"; range(1, 200) .pipe( filter(x => x % 2 === 1), map(x => x + x) ) .subscribe(x => console.log(x)); ``` Here, we're using the built-in `pipe` method on Observables to combine operators. See [pipeable operators](https://github.com/ReactiveX/rxjs/blob/master/doc/pipeable-operators.md) for more information. ### CommonJS via npm To install this library for CommonJS (CJS) usage, use the following command: ```sh npm install rxjs ``` (Note: destructuring available in Node 8+) ```js const { range } = require('rxjs'); const { map, filter } = require('rxjs/operators'); range(1, 200).pipe( filter(x => x % 2 === 1), map(x => x + x) ).subscribe(x => console.log(x)); ``` ### CDN For CDN, you can use [unpkg](https://unpkg.com/): https://unpkg.com/rxjs/bundles/rxjs.umd.min.js The global namespace for rxjs is `rxjs`: ```js const { range } = rxjs; const { map, filter } = rxjs.operators; range(1, 200) .pipe( filter(x => x % 2 === 1), map(x => x + x) ) .subscribe(x => console.log(x)); ``` ## Goals - Smaller overall bundles sizes - Provide better performance than preceding versions of RxJS - To model/follow the [Observable Spec Proposal](https://github.com/zenparsing/es-observable) to the observable - Provide more modular file structure in a variety of formats - Provide more debuggable call stacks than preceding versions of RxJS ## Building/Testing - `npm run build_all` - builds everything - `npm test` - runs tests - `npm run test_no_cache` - run test with `ts-node` set to false ## Performance Tests Run `npm run build_perf` or `npm run perf` to run the performance tests with `protractor`. Run `npm run perf_micro [operator]` to run micro performance test benchmarking operator. ## Adding documentation We appreciate all contributions to the documentation of any type. All of the information needed to get the docs app up and running locally as well as how to contribute can be found in the [documentation directory](./docs_app). ## Generating PNG marble diagrams The script `npm run tests2png` requires some native packages installed locally: `imagemagick`, `graphicsmagick`, and `ghostscript`. For Mac OS X with [Homebrew](http://brew.sh/): - `brew install imagemagick` - `brew install graphicsmagick` - `brew install ghostscript` - You may need to install the Ghostscript fonts manually: - Download the tarball from the [gs-fonts project](https://sourceforge.net/projects/gs-fonts) - `mkdir -p /usr/local/share/ghostscript && tar zxvf /path/to/ghostscript-fonts.tar.gz -C /usr/local/share/ghostscript` For Debian Linux: - `sudo add-apt-repository ppa:dhor/myway` - `apt-get install imagemagick` - `apt-get install graphicsmagick` - `apt-get install ghostscript` For Windows and other Operating Systems, check the download instructions here: - http://imagemagick.org - http://www.graphicsmagick.org - http://www.ghostscript.com/ # typedarray-to-buffer [![travis][travis-image]][travis-url] [![npm][npm-image]][npm-url] [![downloads][downloads-image]][downloads-url] [![javascript style guide][standard-image]][standard-url] [travis-image]: https://img.shields.io/travis/feross/typedarray-to-buffer/master.svg [travis-url]: https://travis-ci.org/feross/typedarray-to-buffer [npm-image]: https://img.shields.io/npm/v/typedarray-to-buffer.svg [npm-url]: https://npmjs.org/package/typedarray-to-buffer [downloads-image]: https://img.shields.io/npm/dm/typedarray-to-buffer.svg [downloads-url]: https://npmjs.org/package/typedarray-to-buffer [standard-image]: https://img.shields.io/badge/code_style-standard-brightgreen.svg [standard-url]: https://standardjs.com #### Convert a typed array to a [Buffer](https://github.com/feross/buffer) without a copy. [![saucelabs][saucelabs-image]][saucelabs-url] [saucelabs-image]: https://saucelabs.com/browser-matrix/typedarray-to-buffer.svg [saucelabs-url]: https://saucelabs.com/u/typedarray-to-buffer Say you're using the ['buffer'](https://github.com/feross/buffer) module on npm, or [browserify](http://browserify.org/) and you're working with lots of binary data. Unfortunately, sometimes the browser or someone else's API gives you a typed array like `Uint8Array` to work with and you need to convert it to a `Buffer`. What do you do? Of course: `Buffer.from(uint8array)` But, alas, every time you do `Buffer.from(uint8array)` **the entire array gets copied**. The `Buffer` constructor does a copy; this is defined by the [node docs](http://nodejs.org/api/buffer.html) and the 'buffer' module matches the node API exactly. So, how can we avoid this expensive copy in [performance critical applications](https://github.com/feross/buffer/issues/22)? ***Simply use this module, of course!*** If you have an `ArrayBuffer`, you don't need this module, because `Buffer.from(arrayBuffer)` [is already efficient](https://nodejs.org/api/buffer.html#buffer_class_method_buffer_from_arraybuffer_byteoffset_length). ## install ```bash npm install typedarray-to-buffer ``` ## usage To convert a typed array to a `Buffer` **without a copy**, do this: ```js var toBuffer = require('typedarray-to-buffer') var arr = new Uint8Array([1, 2, 3]) arr = toBuffer(arr) // arr is a buffer now! arr.toString() // '\u0001\u0002\u0003' arr.readUInt16BE(0) // 258 ``` ## how it works If the browser supports typed arrays, then `toBuffer` will **augment the typed array** you pass in with the `Buffer` methods and return it. See [how does Buffer work?](https://github.com/feross/buffer#how-does-it-work) for more about how augmentation works. This module uses the typed array's underlying `ArrayBuffer` to back the new `Buffer`. This respects the "view" on the `ArrayBuffer`, i.e. `byteOffset` and `byteLength`. In other words, if you do `toBuffer(new Uint32Array([1, 2, 3]))`, then the new `Buffer` will contain `[1, 0, 0, 0, 2, 0, 0, 0, 3, 0, 0, 0]`, **not** `[1, 2, 3]`. And it still doesn't require a copy. If the browser doesn't support typed arrays, then `toBuffer` will create a new `Buffer` object, copy the data into it, and return it. There's no simple performance optimization we can do for old browsers. Oh well. If this module is used in node, then it will just call `Buffer.from`. This is just for the convenience of modules that work in both node and the browser. ## license MIT. Copyright (C) [Feross Aboukhadijeh](http://feross.org). # OPINIONTRUST ## Descripción - OpinionTrust es un smart contract que permite mirar las opinions de los usuarios para poder comprar un determinado producto y poder generar confianza en los usuarios a la hora de comprar un producto. El producto es creado por el usuario y los usuasrios hacen comentarios negativos o positivos del producto y determinar si el producto es buena inversion para la necesidad del usuario. OpinionTrust te permite: 1. Crear, obtener usuarios 2. Crear, borrar, obtener, actualizar y obtener todos los productos 3. Atar el producto con el usuario 4. Contar los like y dislike que tiene cada producto 5. Crear, encontrar, eleminar y obtener todas las categorias ## Stack - assemblyscript 6.14.4 - near-cli 12.16.2 - near-sdk-as 3.2.3 - npm v7.7.6 - node v15.14.0 - @assemblyscript/loader 17.0.2 ### Prerequisitos - Asegúrese de haber instalado [Node.js] ≥ 15 (recomendamos usar [nvm]) - nvm use 15 - Asegúrese de haber instalado yarn: `npm install -g yarn` - Instalar dependencias: `yarn install` - Cree una cuenta de prueba NEAR [https://wallet.testnet.near.org/] - Instale NEAR CLI globalmente: [near-cli] es una interfaz de línea de comandos (CLI) para interactuar con NEAR blockchain ```bash # Install near-cli $ yarn install --global near-cli ``` ### Configuración de NEAR CLI - Configure su near-cli para autorizar su cuenta de prueba creada recientemente: near login ```bash $ near login ``` ### Clonar repositorio ```bash # clonar repositorio $ git https://github.com/WilliamPerezBeltran/back-end-near # Ir al directorio del app $ cd back-end-near ``` ### Instalar dependencias ```bash # instalar con npm $ npm install # Instalar con yarn $ yarn o yarn install ``` ### Ejecutar aplicación ```bash # Ejecutar app con npm $ npm run build ``` ### Ejecutar tests ```bash # Ejecutar test $ npm run test ``` ### Deploy app ```bash # Deploy app con npm $ npm run dev ``` ### Ejecutar build, test, deploy ```bash # Deploy app con npm $ npm run all ``` ## Qué incluye ``` ├───assembly/ │ ├───__tests__/ │ │ ├───as-pect.d.ts │ │ └───index.spec.ts │ ├───models/ │ │ ├───Category.ts │ │ ├───Comment.ts │ │ ├───Opinion.ts │ │ ├───Product.ts │ │ └───User.ts │ ├───as_types.d.ts │ ├───index.ts │ └───tsconfig.json ├───build/ │ └───release/ │ └───back-end.wasm ├───neardev/ │ ├───dev-account │ └───dev-account.env ├───scripts/ │ ├───1.build-proyect.sh │ ├───2.setup-proyect.sh │ └───3.clean-proyect.sh ├───tests/ │ └───index.js ├───README.md ├───as-pect.config.js ├───asconfig.json ├───index.js ├───package-lock.json └───package.json ``` ## Explicación de las carpetas - assembly: Código donde se encuentra todo lo relacionado al smart contract. - assembly/test: Código donde se encuentra todo lo relacionado a los test del smart contract. - assembly/models: Código donde se encuentra los modelos del smart contract. - build: Build el smart contractArchivos javascript en donde cada uno es un componente. - neardev: Cuenta y nombre del contrato actual. - scripts: Ejecucion de comando de bash para borrar el codigo y actualizarlo. ## Agregar varialbe OWNER a env - Asegurese de ejecutar en la consola la variable con la cual se va logear en near para que quede guardado en las variables de la consola env ```bash $ OWNER=<near_user> # ejemplo $ OWNER=williamfpb.testnet ``` ## Ejecutar scripts ```bash # ejecutar proyecto $ ./scripts/1.build-proyect.sh # Configurar proyecot $ ./scripts/2.setup-proyect.sh # limpiar y crear carpetas del proyeco de near $ ./scripts/3.clean-proyect.sh ``` ## Ejecutar metodos del contrato - Los siguientes comandos le permiten interactuar con el smart contract OpinionTrust utilizando NEAR CLI. ### User ```bash # registrar usuario $ near call $(cat neardev/dev-account) registerUser '{"userName":"william","userEmail":"william@gmail.com"}' --account_id $OWNER # Obtener el usuario por el id $ near call $(cat neardev/dev-account) getUserbyId '{"creator":"williamfpb.testnet"}' --account_id $OWNER ``` ### Product ```bash # Crear producto $ near call $(cat neardev/dev-account) createProduct '{"productName":"nombre producto","productPrice":0.01,"productDescription":"description producto","productQuantity":2}' --account_id $OWNER # Obtener producto by id $ near call $(cat neardev/dev-account) getproductById '{"productId":<productById>}' --account_id $OWNER # Borrar producto by id $ near call $(cat neardev/dev-account) deleteProductbyId '{"productId":<productById>}' --account_id $OWNER # Update producto $ near call $(cat neardev/dev-account) updateProduct '{"productId":<productId>, "updateProduct":{ "productName":<updateProduct>","productPrice":<productPrice>,"productDescription":<productDescription>,"productQuantity":<productQuantity>} }' --account_id $OWNER # Obtener todos los productos $ near call $(cat neardev/dev-account) getAllProducts --account_id $OWNER ``` ### Product User ```bash # Registrar producto y atarlo al usuario $ near call $(cat neardev/dev-account) registerProductUser '{"productName":<productName>,"productPrice":<productPrice>,"productDescription":<productDescription>,"productQuantity":<productQuantity>}' --account_id $OWNER ``` ### Comment ```bash # Registrar producto y atarlo al usuario $ near call $(cat neardev/dev-account) createComment '{"commentId":<commentId>,"creator":<creator>,"productId":<productId>}' --account_id $OWNER # Agregar comentario relacionado con el producto $ near call $(cat neardev/dev-account) addComment '{"productId":<productId>,"descripcion":<descripcion>}' --account_id $OWNER # Obtener todos los comentarios $ near call $(cat neardev/dev-account) getAllComments --account_id $OWNER ``` ### Buy Product ```bash # Registrar producto y atarlo al usuario $ near call $(cat neardev/dev-account) buyProduct '{"productId":<productId>}' --account_id $OWNER ``` ### Opinion ```bash # Agregarle opinion like o dislike al producto $ near call $(cat neardev/dev-account) opinionProduct '{"opinion":<opinion>,"opinionValue":<opinionValue>,"productId":<productId>' --account_id $OWNER # Sumar todos los likes de un producto $ near call $(cat neardev/dev-account) sumOpinionLiken '{"owner":<owner>,"productId":<productId>' --account_id $OWNER # Sumar todos los dislikes de un producto $ near call $(cat neardev/dev-account) sumOpinionDisLiken '{"owner":<owner>,"productId":<productId>' --account_id $OWNER ``` ### Category ```bash # Agregarle opinion like o dislike al producto $ near call $(cat neardev/dev-account) insertcategory '{"category":<category>' --account_id $OWNER # Agregarle opinion like o dislike al producto $ near call $(cat neardev/dev-account) findcategory '{"category":<category>' --account_id $OWNER # Agregarle opinion like o dislike al producto $ near call $(cat neardev/dev-account) findIndexcategory '{"category":<category>' --account_id $OWNER # Agregarle opinion like o dislike al producto $ near call $(cat neardev/dev-account) removecategory '{"category":<category>' --account_id $OWNER # Agregarle opinion like o dislike al producto $ near call $(cat neardev/dev-account) getAllCategories '{"category":<category>' --account_id $OWNER ``` ## Creador **William Pérez** - <https://github.com/WilliamPerezBeltran> # fast-deep-equal The fastest deep equal with ES6 Map, Set and Typed arrays support. [](https://travis-ci.org/epoberezkin/fast-deep-equal) [](https://www.npmjs.com/package/fast-deep-equal) [](https://coveralls.io/github/epoberezkin/fast-deep-equal?branch=master) ## Install ```bash npm install fast-deep-equal ``` ## Features - ES5 compatible - works in node.js (8+) and browsers (IE9+) - checks equality of Date and RegExp objects by value. ES6 equal (`require('fast-deep-equal/es6')`) also supports: - Maps - Sets - Typed arrays ## Usage ```javascript var equal = require('fast-deep-equal'); console.log(equal({foo: 'bar'}, {foo: 'bar'})); // true ``` To support ES6 Maps, Sets and Typed arrays equality use: ```javascript var equal = require('fast-deep-equal/es6'); console.log(equal(Int16Array([1, 2]), Int16Array([1, 2]))); // true ``` To use with React (avoiding the traversal of React elements' _owner property that contains circular references and is not needed when comparing the elements - borrowed from [react-fast-compare](https://github.com/FormidableLabs/react-fast-compare)): ```javascript var equal = require('fast-deep-equal/react'); var equal = require('fast-deep-equal/es6/react'); ``` ## Performance benchmark Node.js v12.6.0: ``` fast-deep-equal x 261,950 ops/sec ±0.52% (89 runs sampled) fast-deep-equal/es6 x 212,991 ops/sec ±0.34% (92 runs sampled) fast-equals x 230,957 ops/sec ±0.83% (85 runs sampled) nano-equal x 187,995 ops/sec ±0.53% (88 runs sampled) shallow-equal-fuzzy x 138,302 ops/sec ±0.49% (90 runs sampled) underscore.isEqual x 74,423 ops/sec ±0.38% (89 runs sampled) lodash.isEqual x 36,637 ops/sec ±0.72% (90 runs sampled) deep-equal x 2,310 ops/sec ±0.37% (90 runs sampled) deep-eql x 35,312 ops/sec ±0.67% (91 runs sampled) ramda.equals x 12,054 ops/sec ±0.40% (91 runs sampled) util.isDeepStrictEqual x 46,440 ops/sec ±0.43% (90 runs sampled) assert.deepStrictEqual x 456 ops/sec ±0.71% (88 runs sampled) The fastest is fast-deep-equal ``` To run benchmark (requires node.js 6+): ```bash npm run benchmark ``` __Please note__: this benchmark runs against the available test cases. To choose the most performant library for your application, it is recommended to benchmark against your data and to NOT expect this benchmark to reflect the performance difference in your application. ## Enterprise support fast-deep-equal package is a part of [Tidelift enterprise subscription](https://tidelift.com/subscription/pkg/npm-fast-deep-equal?utm_source=npm-fast-deep-equal&utm_medium=referral&utm_campaign=enterprise&utm_term=repo) - it provides a centralised commercial support to open-source software users, in addition to the support provided by software maintainers. ## Security contact To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. Please do NOT report security vulnerability via GitHub issues. ## License [MIT](https://github.com/epoberezkin/fast-deep-equal/blob/master/LICENSE) # AssemblyScript Rtrace A tiny utility to sanitize the AssemblyScript runtime. Records allocations and frees performed by the runtime and emits an error if something is off. Also checks for leaks. Instructions ------------ Compile your module that uses the full or half runtime with `-use ASC_RTRACE=1 --explicitStart` and include an instance of this module as the import named `rtrace`. ```js const rtrace = new Rtrace({ onerror(err, info) { // handle error }, oninfo(msg) { // print message, optional }, getMemory() { // obtain the module's memory, // e.g. with --explicitStart: return instance.exports.memory; } }); const { module, instance } = await WebAssembly.instantiate(..., rtrace.install({ ...imports... }) ); instance.exports._start(); ... if (rtrace.active) { let leakCount = rtr.check(); if (leakCount) { // handle error } } ``` Note that references in globals which are not cleared before collection is performed appear as leaks, including their inner members. A TypedArray would leak itself and its backing ArrayBuffer in this case for example. This is perfectly normal and clearing all globals avoids this. semver(1) -- The semantic versioner for npm =========================================== ## Install ```bash npm install semver ```` ## Usage As a node module: ```js const semver = require('semver') semver.valid('1.2.3') // '1.2.3' semver.valid('a.b.c') // null semver.clean(' =v1.2.3 ') // '1.2.3' semver.satisfies('1.2.3', '1.x || >=2.5.0 || 5.0.0 - 7.2.3') // true semver.gt('1.2.3', '9.8.7') // false semver.lt('1.2.3', '9.8.7') // true semver.minVersion('>=1.0.0') // '1.0.0' semver.valid(semver.coerce('v2')) // '2.0.0' semver.valid(semver.coerce('42.6.7.9.3-alpha')) // '42.6.7' ``` As a command-line utility: ``` $ semver -h A JavaScript implementation of the https://semver.org/ specification Copyright Isaac Z. Schlueter Usage: semver [options] <version> [<version> [...]] Prints valid versions sorted by SemVer precedence Options: -r --range <range> Print versions that match the specified range. -i --increment [<level>] Increment a version by the specified level. Level can be one of: major, minor, patch, premajor, preminor, prepatch, or prerelease. Default level is 'patch'. Only one version may be specified. --preid <identifier> Identifier to be used to prefix premajor, preminor, prepatch or prerelease version increments. -l --loose Interpret versions and ranges loosely -p --include-prerelease Always include prerelease versions in range matching -c --coerce Coerce a string into SemVer if possible (does not imply --loose) --rtl Coerce version strings right to left --ltr Coerce version strings left to right (default) Program exits successfully if any valid version satisfies all supplied ranges, and prints all satisfying versions. If no satisfying versions are found, then exits failure. Versions are printed in ascending order, so supplying multiple versions to the utility will just sort them. ``` ## Versions A "version" is described by the `v2.0.0` specification found at <https://semver.org/>. A leading `"="` or `"v"` character is stripped off and ignored. ## Ranges A `version range` is a set of `comparators` which specify versions that satisfy the range. A `comparator` is composed of an `operator` and a `version`. The set of primitive `operators` is: * `<` Less than * `<=` Less than or equal to * `>` Greater than * `>=` Greater than or equal to * `=` Equal. If no operator is specified, then equality is assumed, so this operator is optional, but MAY be included. For example, the comparator `>=1.2.7` would match the versions `1.2.7`, `1.2.8`, `2.5.3`, and `1.3.9`, but not the versions `1.2.6` or `1.1.0`. Comparators can be joined by whitespace to form a `comparator set`, which is satisfied by the **intersection** of all of the comparators it includes. A range is composed of one or more comparator sets, joined by `||`. A version matches a range if and only if every comparator in at least one of the `||`-separated comparator sets is satisfied by the version. For example, the range `>=1.2.7 <1.3.0` would match the versions `1.2.7`, `1.2.8`, and `1.2.99`, but not the versions `1.2.6`, `1.3.0`, or `1.1.0`. The range `1.2.7 || >=1.2.9 <2.0.0` would match the versions `1.2.7`, `1.2.9`, and `1.4.6`, but not the versions `1.2.8` or `2.0.0`. ### Prerelease Tags If a version has a prerelease tag (for example, `1.2.3-alpha.3`) then it will only be allowed to satisfy comparator sets if at least one comparator with the same `[major, minor, patch]` tuple also has a prerelease tag. For example, the range `>1.2.3-alpha.3` would be allowed to match the version `1.2.3-alpha.7`, but it would *not* be satisfied by `3.4.5-alpha.9`, even though `3.4.5-alpha.9` is technically "greater than" `1.2.3-alpha.3` according to the SemVer sort rules. The version range only accepts prerelease tags on the `1.2.3` version. The version `3.4.5` *would* satisfy the range, because it does not have a prerelease flag, and `3.4.5` is greater than `1.2.3-alpha.7`. The purpose for this behavior is twofold. First, prerelease versions frequently are updated very quickly, and contain many breaking changes that are (by the author's design) not yet fit for public consumption. Therefore, by default, they are excluded from range matching semantics. Second, a user who has opted into using a prerelease version has clearly indicated the intent to use *that specific* set of alpha/beta/rc versions. By including a prerelease tag in the range, the user is indicating that they are aware of the risk. However, it is still not appropriate to assume that they have opted into taking a similar risk on the *next* set of prerelease versions. Note that this behavior can be suppressed (treating all prerelease versions as if they were normal versions, for the purpose of range matching) by setting the `includePrerelease` flag on the options object to any [functions](https://github.com/npm/node-semver#functions) that do range matching. #### Prerelease Identifiers The method `.inc` takes an additional `identifier` string argument that will append the value of the string as a prerelease identifier: ```javascript semver.inc('1.2.3', 'prerelease', 'beta') // '1.2.4-beta.0' ``` command-line example: ```bash $ semver 1.2.3 -i prerelease --preid beta 1.2.4-beta.0 ``` Which then can be used to increment further: ```bash $ semver 1.2.4-beta.0 -i prerelease 1.2.4-beta.1 ``` ### Advanced Range Syntax Advanced range syntax desugars to primitive comparators in deterministic ways. Advanced ranges may be combined in the same way as primitive comparators using white space or `||`. #### Hyphen Ranges `X.Y.Z - A.B.C` Specifies an inclusive set. * `1.2.3 - 2.3.4` := `>=1.2.3 <=2.3.4` If a partial version is provided as the first version in the inclusive range, then the missing pieces are replaced with zeroes. * `1.2 - 2.3.4` := `>=1.2.0 <=2.3.4` If a partial version is provided as the second version in the inclusive range, then all versions that start with the supplied parts of the tuple are accepted, but nothing that would be greater than the provided tuple parts. * `1.2.3 - 2.3` := `>=1.2.3 <2.4.0` * `1.2.3 - 2` := `>=1.2.3 <3.0.0` #### X-Ranges `1.2.x` `1.X` `1.2.*` `*` Any of `X`, `x`, or `*` may be used to "stand in" for one of the numeric values in the `[major, minor, patch]` tuple. * `*` := `>=0.0.0` (Any version satisfies) * `1.x` := `>=1.0.0 <2.0.0` (Matching major version) * `1.2.x` := `>=1.2.0 <1.3.0` (Matching major and minor versions) A partial version range is treated as an X-Range, so the special character is in fact optional. * `""` (empty string) := `*` := `>=0.0.0` * `1` := `1.x.x` := `>=1.0.0 <2.0.0` * `1.2` := `1.2.x` := `>=1.2.0 <1.3.0` #### Tilde Ranges `~1.2.3` `~1.2` `~1` Allows patch-level changes if a minor version is specified on the comparator. Allows minor-level changes if not. * `~1.2.3` := `>=1.2.3 <1.(2+1).0` := `>=1.2.3 <1.3.0` * `~1.2` := `>=1.2.0 <1.(2+1).0` := `>=1.2.0 <1.3.0` (Same as `1.2.x`) * `~1` := `>=1.0.0 <(1+1).0.0` := `>=1.0.0 <2.0.0` (Same as `1.x`) * `~0.2.3` := `>=0.2.3 <0.(2+1).0` := `>=0.2.3 <0.3.0` * `~0.2` := `>=0.2.0 <0.(2+1).0` := `>=0.2.0 <0.3.0` (Same as `0.2.x`) * `~0` := `>=0.0.0 <(0+1).0.0` := `>=0.0.0 <1.0.0` (Same as `0.x`) * `~1.2.3-beta.2` := `>=1.2.3-beta.2 <1.3.0` Note that prereleases in the `1.2.3` version will be allowed, if they are greater than or equal to `beta.2`. So, `1.2.3-beta.4` would be allowed, but `1.2.4-beta.2` would not, because it is a prerelease of a different `[major, minor, patch]` tuple. #### Caret Ranges `^1.2.3` `^0.2.5` `^0.0.4` Allows changes that do not modify the left-most non-zero element in the `[major, minor, patch]` tuple. In other words, this allows patch and minor updates for versions `1.0.0` and above, patch updates for versions `0.X >=0.1.0`, and *no* updates for versions `0.0.X`. Many authors treat a `0.x` version as if the `x` were the major "breaking-change" indicator. Caret ranges are ideal when an author may make breaking changes between `0.2.4` and `0.3.0` releases, which is a common practice. However, it presumes that there will *not* be breaking changes between `0.2.4` and `0.2.5`. It allows for changes that are presumed to be additive (but non-breaking), according to commonly observed practices. * `^1.2.3` := `>=1.2.3 <2.0.0` * `^0.2.3` := `>=0.2.3 <0.3.0` * `^0.0.3` := `>=0.0.3 <0.0.4` * `^1.2.3-beta.2` := `>=1.2.3-beta.2 <2.0.0` Note that prereleases in the `1.2.3` version will be allowed, if they are greater than or equal to `beta.2`. So, `1.2.3-beta.4` would be allowed, but `1.2.4-beta.2` would not, because it is a prerelease of a different `[major, minor, patch]` tuple. * `^0.0.3-beta` := `>=0.0.3-beta <0.0.4` Note that prereleases in the `0.0.3` version *only* will be allowed, if they are greater than or equal to `beta`. So, `0.0.3-pr.2` would be allowed. When parsing caret ranges, a missing `patch` value desugars to the number `0`, but will allow flexibility within that value, even if the major and minor versions are both `0`. * `^1.2.x` := `>=1.2.0 <2.0.0` * `^0.0.x` := `>=0.0.0 <0.1.0` * `^0.0` := `>=0.0.0 <0.1.0` A missing `minor` and `patch` values will desugar to zero, but also allow flexibility within those values, even if the major version is zero. * `^1.x` := `>=1.0.0 <2.0.0` * `^0.x` := `>=0.0.0 <1.0.0` ### Range Grammar Putting all this together, here is a Backus-Naur grammar for ranges, for the benefit of parser authors: ```bnf range-set ::= range ( logical-or range ) * logical-or ::= ( ' ' ) * '||' ( ' ' ) * range ::= hyphen | simple ( ' ' simple ) * | '' hyphen ::= partial ' - ' partial simple ::= primitive | partial | tilde | caret primitive ::= ( '<' | '>' | '>=' | '<=' | '=' ) partial partial ::= xr ( '.' xr ( '.' xr qualifier ? )? )? xr ::= 'x' | 'X' | '*' | nr nr ::= '0' | ['1'-'9'] ( ['0'-'9'] ) * tilde ::= '~' partial caret ::= '^' partial qualifier ::= ( '-' pre )? ( '+' build )? pre ::= parts build ::= parts parts ::= part ( '.' part ) * part ::= nr | [-0-9A-Za-z]+ ``` ## Functions All methods and classes take a final `options` object argument. All options in this object are `false` by default. The options supported are: - `loose` Be more forgiving about not-quite-valid semver strings. (Any resulting output will always be 100% strict compliant, of course.) For backwards compatibility reasons, if the `options` argument is a boolean value instead of an object, it is interpreted to be the `loose` param. - `includePrerelease` Set to suppress the [default behavior](https://github.com/npm/node-semver#prerelease-tags) of excluding prerelease tagged versions from ranges unless they are explicitly opted into. Strict-mode Comparators and Ranges will be strict about the SemVer strings that they parse. * `valid(v)`: Return the parsed version, or null if it's not valid. * `inc(v, release)`: Return the version incremented by the release type (`major`, `premajor`, `minor`, `preminor`, `patch`, `prepatch`, or `prerelease`), or null if it's not valid * `premajor` in one call will bump the version up to the next major version and down to a prerelease of that major version. `preminor`, and `prepatch` work the same way. * If called from a non-prerelease version, the `prerelease` will work the same as `prepatch`. It increments the patch version, then makes a prerelease. If the input version is already a prerelease it simply increments it. * `prerelease(v)`: Returns an array of prerelease components, or null if none exist. Example: `prerelease('1.2.3-alpha.1') -> ['alpha', 1]` * `major(v)`: Return the major version number. * `minor(v)`: Return the minor version number. * `patch(v)`: Return the patch version number. * `intersects(r1, r2, loose)`: Return true if the two supplied ranges or comparators intersect. * `parse(v)`: Attempt to parse a string as a semantic version, returning either a `SemVer` object or `null`. ### Comparison * `gt(v1, v2)`: `v1 > v2` * `gte(v1, v2)`: `v1 >= v2` * `lt(v1, v2)`: `v1 < v2` * `lte(v1, v2)`: `v1 <= v2` * `eq(v1, v2)`: `v1 == v2` This is true if they're logically equivalent, even if they're not the exact same string. You already know how to compare strings. * `neq(v1, v2)`: `v1 != v2` The opposite of `eq`. * `cmp(v1, comparator, v2)`: Pass in a comparison string, and it'll call the corresponding function above. `"==="` and `"!=="` do simple string comparison, but are included for completeness. Throws if an invalid comparison string is provided. * `compare(v1, v2)`: Return `0` if `v1 == v2`, or `1` if `v1` is greater, or `-1` if `v2` is greater. Sorts in ascending order if passed to `Array.sort()`. * `rcompare(v1, v2)`: The reverse of compare. Sorts an array of versions in descending order when passed to `Array.sort()`. * `compareBuild(v1, v2)`: The same as `compare` but considers `build` when two versions are equal. Sorts in ascending order if passed to `Array.sort()`. `v2` is greater. Sorts in ascending order if passed to `Array.sort()`. * `diff(v1, v2)`: Returns difference between two versions by the release type (`major`, `premajor`, `minor`, `preminor`, `patch`, `prepatch`, or `prerelease`), or null if the versions are the same. ### Comparators * `intersects(comparator)`: Return true if the comparators intersect ### Ranges * `validRange(range)`: Return the valid range or null if it's not valid * `satisfies(version, range)`: Return true if the version satisfies the range. * `maxSatisfying(versions, range)`: Return the highest version in the list that satisfies the range, or `null` if none of them do. * `minSatisfying(versions, range)`: Return the lowest version in the list that satisfies the range, or `null` if none of them do. * `minVersion(range)`: Return the lowest version that can possibly match the given range. * `gtr(version, range)`: Return `true` if version is greater than all the versions possible in the range. * `ltr(version, range)`: Return `true` if version is less than all the versions possible in the range. * `outside(version, range, hilo)`: Return true if the version is outside the bounds of the range in either the high or low direction. The `hilo` argument must be either the string `'>'` or `'<'`. (This is the function called by `gtr` and `ltr`.) * `intersects(range)`: Return true if any of the ranges comparators intersect Note that, since ranges may be non-contiguous, a version might not be greater than a range, less than a range, *or* satisfy a range! For example, the range `1.2 <1.2.9 || >2.0.0` would have a hole from `1.2.9` until `2.0.0`, so the version `1.2.10` would not be greater than the range (because `2.0.1` satisfies, which is higher), nor less than the range (since `1.2.8` satisfies, which is lower), and it also does not satisfy the range. If you want to know if a version satisfies or does not satisfy a range, use the `satisfies(version, range)` function. ### Coercion * `coerce(version, options)`: Coerces a string to semver if possible This aims to provide a very forgiving translation of a non-semver string to semver. It looks for the first digit in a string, and consumes all remaining characters which satisfy at least a partial semver (e.g., `1`, `1.2`, `1.2.3`) up to the max permitted length (256 characters). Longer versions are simply truncated (`4.6.3.9.2-alpha2` becomes `4.6.3`). All surrounding text is simply ignored (`v3.4 replaces v3.3.1` becomes `3.4.0`). Only text which lacks digits will fail coercion (`version one` is not valid). The maximum length for any semver component considered for coercion is 16 characters; longer components will be ignored (`10000000000000000.4.7.4` becomes `4.7.4`). The maximum value for any semver component is `Integer.MAX_SAFE_INTEGER || (2**53 - 1)`; higher value components are invalid (`9999999999999999.4.7.4` is likely invalid). If the `options.rtl` flag is set, then `coerce` will return the right-most coercible tuple that does not share an ending index with a longer coercible tuple. For example, `1.2.3.4` will return `2.3.4` in rtl mode, not `4.0.0`. `1.2.3/4` will return `4.0.0`, because the `4` is not a part of any other overlapping SemVer tuple. ### Clean * `clean(version)`: Clean a string to be a valid semver if possible This will return a cleaned and trimmed semver version. If the provided version is not valid a null will be returned. This does not work for ranges. ex. * `s.clean(' = v 2.1.5foo')`: `null` * `s.clean(' = v 2.1.5foo', { loose: true })`: `'2.1.5-foo'` * `s.clean(' = v 2.1.5-foo')`: `null` * `s.clean(' = v 2.1.5-foo', { loose: true })`: `'2.1.5-foo'` * `s.clean('=v2.1.5')`: `'2.1.5'` * `s.clean(' =v2.1.5')`: `2.1.5` * `s.clean(' 2.1.5 ')`: `'2.1.5'` * `s.clean('~1.0.0')`: `null` # is-glob [](https://www.npmjs.com/package/is-glob) [](https://npmjs.org/package/is-glob) [](https://npmjs.org/package/is-glob) [](https://github.com/micromatch/is-glob/actions) > Returns `true` if the given string looks like a glob pattern or an extglob pattern. This makes it easy to create code that only uses external modules like node-glob when necessary, resulting in much faster code execution and initialization time, and a better user experience. Please consider following this project's author, [Jon Schlinkert](https://github.com/jonschlinkert), and consider starring the project to show your :heart: and support. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save is-glob ``` You might also be interested in [is-valid-glob](https://github.com/jonschlinkert/is-valid-glob) and [has-glob](https://github.com/jonschlinkert/has-glob). ## Usage ```js var isGlob = require('is-glob'); ``` ### Default behavior **True** Patterns that have glob characters or regex patterns will return `true`: ```js isGlob('!foo.js'); isGlob('*.js'); isGlob('**/abc.js'); isGlob('abc/*.js'); isGlob('abc/(aaa|bbb).js'); isGlob('abc/[a-z].js'); isGlob('abc/{a,b}.js'); //=> true ``` Extglobs ```js isGlob('abc/@(a).js'); isGlob('abc/!(a).js'); isGlob('abc/+(a).js'); isGlob('abc/*(a).js'); isGlob('abc/?(a).js'); //=> true ``` **False** Escaped globs or extglobs return `false`: ```js isGlob('abc/\\@(a).js'); isGlob('abc/\\!(a).js'); isGlob('abc/\\+(a).js'); isGlob('abc/\\*(a).js'); isGlob('abc/\\?(a).js'); isGlob('\\!foo.js'); isGlob('\\*.js'); isGlob('\\*\\*/abc.js'); isGlob('abc/\\*.js'); isGlob('abc/\\(aaa|bbb).js'); isGlob('abc/\\[a-z].js'); isGlob('abc/\\{a,b}.js'); //=> false ``` Patterns that do not have glob patterns return `false`: ```js isGlob('abc.js'); isGlob('abc/def/ghi.js'); isGlob('foo.js'); isGlob('abc/@.js'); isGlob('abc/+.js'); isGlob('abc/?.js'); isGlob(); isGlob(null); //=> false ``` Arrays are also `false` (If you want to check if an array has a glob pattern, use [has-glob](https://github.com/jonschlinkert/has-glob)): ```js isGlob(['**/*.js']); isGlob(['foo.js']); //=> false ``` ### Option strict When `options.strict === false` the behavior is less strict in determining if a pattern is a glob. Meaning that some patterns that would return `false` may return `true`. This is done so that matching libraries like [micromatch](https://github.com/micromatch/micromatch) have a chance at determining if the pattern is a glob or not. **True** Patterns that have glob characters or regex patterns will return `true`: ```js isGlob('!foo.js', {strict: false}); isGlob('*.js', {strict: false}); isGlob('**/abc.js', {strict: false}); isGlob('abc/*.js', {strict: false}); isGlob('abc/(aaa|bbb).js', {strict: false}); isGlob('abc/[a-z].js', {strict: false}); isGlob('abc/{a,b}.js', {strict: false}); //=> true ``` Extglobs ```js isGlob('abc/@(a).js', {strict: false}); isGlob('abc/!(a).js', {strict: false}); isGlob('abc/+(a).js', {strict: false}); isGlob('abc/*(a).js', {strict: false}); isGlob('abc/?(a).js', {strict: false}); //=> true ``` **False** Escaped globs or extglobs return `false`: ```js isGlob('\\!foo.js', {strict: false}); isGlob('\\*.js', {strict: false}); isGlob('\\*\\*/abc.js', {strict: false}); isGlob('abc/\\*.js', {strict: false}); isGlob('abc/\\(aaa|bbb).js', {strict: false}); isGlob('abc/\\[a-z].js', {strict: false}); isGlob('abc/\\{a,b}.js', {strict: false}); //=> false ``` ## About <details> <summary><strong>Contributing</strong></summary> Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). </details> <details> <summary><strong>Running Tests</strong></summary> Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` </details> <details> <summary><strong>Building docs</strong></summary> _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` </details> ### Related projects You might also be interested in these projects: * [assemble](https://www.npmjs.com/package/assemble): Get the rocks out of your socks! Assemble makes you fast at creating web projects… [more](https://github.com/assemble/assemble) | [homepage](https://github.com/assemble/assemble "Get the rocks out of your socks! Assemble makes you fast at creating web projects. Assemble is used by thousands of projects for rapid prototyping, creating themes, scaffolds, boilerplates, e-books, UI components, API documentation, blogs, building websit") * [base](https://www.npmjs.com/package/base): Framework for rapidly creating high quality, server-side node.js applications, using plugins like building blocks | [homepage](https://github.com/node-base/base "Framework for rapidly creating high quality, server-side node.js applications, using plugins like building blocks") * [update](https://www.npmjs.com/package/update): Be scalable! Update is a new, open source developer framework and CLI for automating updates… [more](https://github.com/update/update) | [homepage](https://github.com/update/update "Be scalable! Update is a new, open source developer framework and CLI for automating updates of any kind in code projects.") * [verb](https://www.npmjs.com/package/verb): Documentation generator for GitHub projects. Verb is extremely powerful, easy to use, and is used… [more](https://github.com/verbose/verb) | [homepage](https://github.com/verbose/verb "Documentation generator for GitHub projects. Verb is extremely powerful, easy to use, and is used on hundreds of projects of all sizes to generate everything from API docs to readmes.") ### Contributors | **Commits** | **Contributor** | | --- | --- | | 47 | [jonschlinkert](https://github.com/jonschlinkert) | | 5 | [doowb](https://github.com/doowb) | | 1 | [phated](https://github.com/phated) | | 1 | [danhper](https://github.com/danhper) | | 1 | [paulmillr](https://github.com/paulmillr) | ### Author **Jon Schlinkert** * [GitHub Profile](https://github.com/jonschlinkert) * [Twitter Profile](https://twitter.com/jonschlinkert) * [LinkedIn Profile](https://linkedin.com/in/jonschlinkert) ### License Copyright © 2019, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT License](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.8.0, on March 27, 2019._ # ripemd160 [](https://www.npmjs.org/package/ripemd160) [](https://travis-ci.org/crypto-browserify/ripemd160) [](https://david-dm.org/crypto-browserify/ripemd160#info=dependencies) [](https://github.com/feross/standard) Node style `ripemd160` on pure JavaScript. ## Example ```js var RIPEMD160 = require('ripemd160') console.log(new RIPEMD160().update('42').digest('hex')) // => 0df020ba32aa9b8b904471ff582ce6b579bf8bc8 var ripemd160stream = new RIPEMD160() ripemd160stream.end('42') console.log(ripemd160stream.read().toString('hex')) // => 0df020ba32aa9b8b904471ff582ce6b579bf8bc8 ``` ## LICENSE MIT # Visitor utilities for AssemblyScript Compiler transformers ## Example ### List Fields The transformer: ```ts import { ClassDeclaration, FieldDeclaration, MethodDeclaration, } from "../../as"; import { ClassDecorator, registerDecorator } from "../decorator"; import { toString } from "../utils"; class ListMembers extends ClassDecorator { visitFieldDeclaration(node: FieldDeclaration): void { if (!node.name) console.log(toString(node) + "\n"); const name = toString(node.name); const _type = toString(node.type!); this.stdout.write(name + ": " + _type + "\n"); } visitMethodDeclaration(node: MethodDeclaration): void { const name = toString(node.name); if (name == "constructor") { return; } const sig = toString(node.signature); this.stdout.write(name + ": " + sig + "\n"); } visitClassDeclaration(node: ClassDeclaration): void { this.visit(node.members); } get name(): string { return "list"; } } export = registerDecorator(new ListMembers()); ``` assembly/foo.ts: ```ts @list class Foo { a: u8; b: bool; i: i32; } ``` And then compile with `--transform` flag: ``` asc assembly/foo.ts --transform ./dist/examples/list --noEmit ``` Which prints the following to the console: ``` a: u8 b: bool i: i32 ``` # file-entry-cache > Super simple cache for file metadata, useful for process that work o a given series of files > and that only need to repeat the job on the changed ones since the previous run of the process — Edit [](https://npmjs.org/package/file-entry-cache) [](https://travis-ci.org/royriojas/file-entry-cache) ## install ```bash npm i --save file-entry-cache ``` ## Usage The module exposes two functions `create` and `createFromFile`. ## `create(cacheName, [directory, useCheckSum])` - **cacheName**: the name of the cache to be created - **directory**: Optional the directory to load the cache from - **usecheckSum**: Whether to use md5 checksum to verify if file changed. If false the default will be to use the mtime and size of the file. ## `createFromFile(pathToCache, [useCheckSum])` - **pathToCache**: the path to the cache file (this combines the cache name and directory) - **useCheckSum**: Whether to use md5 checksum to verify if file changed. If false the default will be to use the mtime and size of the file. ```js // loads the cache, if one does not exists for the given // Id a new one will be prepared to be created var fileEntryCache = require('file-entry-cache'); var cache = fileEntryCache.create('testCache'); var files = expand('../fixtures/*.txt'); // the first time this method is called, will return all the files var oFiles = cache.getUpdatedFiles(files); // this will persist this to disk checking each file stats and // updating the meta attributes `size` and `mtime`. // custom fields could also be added to the meta object and will be persisted // in order to retrieve them later cache.reconcile(); // use this if you want the non visited file entries to be kept in the cache // for more than one execution // // cache.reconcile( true /* noPrune */) // on a second run var cache2 = fileEntryCache.create('testCache'); // will return now only the files that were modified or none // if no files were modified previous to the execution of this function var oFiles = cache.getUpdatedFiles(files); // if you want to prevent a file from being considered non modified // something useful if a file failed some sort of validation // you can then remove the entry from the cache doing cache.removeEntry('path/to/file'); // path to file should be the same path of the file received on `getUpdatedFiles` // that will effectively make the file to appear again as modified until the validation is passed. In that // case you should not remove it from the cache // if you need all the files, so you can determine what to do with the changed ones // you can call var oFiles = cache.normalizeEntries(files); // oFiles will be an array of objects like the following entry = { key: 'some/name/file', the path to the file changed: true, // if the file was changed since previous run meta: { size: 3242, // the size of the file mtime: 231231231, // the modification time of the file data: {} // some extra field stored for this file (useful to save the result of a transformation on the file } } ``` ## Motivation for this module I needed a super simple and dumb **in-memory cache** with optional disk persistence (write-back cache) in order to make a script that will beautify files with `esformatter` to execute only on the files that were changed since the last run. In doing so the process of beautifying files was reduced from several seconds to a small fraction of a second. This module uses [flat-cache](https://www.npmjs.com/package/flat-cache) a super simple `key/value` cache storage with optional file persistance. The main idea is to read the files when the task begins, apply the transforms required, and if the process succeed, then store the new state of the files. The next time this module request for `getChangedFiles` will return only the files that were modified. Making the process to end faster. This module could also be used by processes that modify the files applying a transform, in that case the result of the transform could be stored in the `meta` field, of the entries. Anything added to the meta field will be persisted. Those processes won't need to call `getChangedFiles` they will instead call `normalizeEntries` that will return the entries with a `changed` field that can be used to determine if the file was changed or not. If it was not changed the transformed stored data could be used instead of actually applying the transformation, saving time in case of only a few files changed. In the worst case scenario all the files will be processed. In the best case scenario only a few of them will be processed. ## Important notes - The values set on the meta attribute of the entries should be `stringify-able` ones if possible, flat-cache uses `circular-json` to try to persist circular structures, but this should be considered experimental. The best results are always obtained with non circular values - All the changes to the cache state are done to memory first and only persisted after reconcile. ## License MIT # near-sdk-as Collection of packages used in developing NEAR smart contracts in AssemblyScript including: - [`runtime library`](https://github.com/near/near-sdk-as/tree/master/sdk-core) - AssemblyScript near runtime library - [`bindgen`](https://github.com/near/near-sdk-as/tree/master/bindgen) - AssemblyScript transformer that adds the bindings needed to (de)serialize input and outputs. - [`near-mock-vm`](https://github.com/near/near-sdk-as/tree/master/near-mock-vm) - Core of the NEAR VM compiled to WebAssembly used for running unit tests. - [`@as-pect/cli`](https://github.com/jtenner/as-pect) - AssemblyScript testing framework similar to jest. ## To Install ```sh yarn add -D near-sdk-as ``` ## Project Setup To set up a AS project to compile with the sdk add the following `asconfig.json` file to the root: ```json { "extends": "near-sdk-as/asconfig.json" } ``` Then if your main file is `assembly/index.ts`, then the project can be build with [`asbuild`](https://github.com/willemneal/asbuild): ```sh yarn asb ``` will create a release build and place it `./build/release/<name-in-package.json>.wasm` ```sh yarn asb --target debug ``` will create a debug build and place it in `./build/debug/..` ## Testing ### Unit Testing See the [sdk's as-pect tests for an example](./sdk/assembly/__tests__) of creating unit tests. Must be ending in `.spec.ts` in a `assembly/__tests__`. ## License `near-sdk-as` is distributed under the terms of both the MIT license and the Apache License (Version 2.0). See [LICENSE-MIT](LICENSE-MIT) and [LICENSE-APACHE](LICENSE-APACHE) for details. # AssemblyScript Loader A convenient loader for [AssemblyScript](https://assemblyscript.org) modules. Demangles module exports to a friendly object structure compatible with TypeScript definitions and provides useful utility to read/write data from/to memory. [Documentation](https://assemblyscript.org/loader.html) # micromatch [](https://www.npmjs.com/package/micromatch) [](https://npmjs.org/package/micromatch) [](https://npmjs.org/package/micromatch) [](https://travis-ci.org/micromatch/micromatch) > Glob matching for javascript/node.js. A replacement and faster alternative to minimatch and multimatch. Please consider following this project's author, [Jon Schlinkert](https://github.com/jonschlinkert), and consider starring the project to show your :heart: and support. ## Table of Contents <details> <summary><strong>Details</strong></summary> - [Install](#install) - [Quickstart](#quickstart) - [Why use micromatch?](#why-use-micromatch) * [Matching features](#matching-features) - [Switching to micromatch](#switching-to-micromatch) * [From minimatch](#from-minimatch) * [From multimatch](#from-multimatch) - [API](#api) - [Options](#options) - [Options Examples](#options-examples) * [options.basename](#optionsbasename) * [options.bash](#optionsbash) * [options.expandRange](#optionsexpandrange) * [options.format](#optionsformat) * [options.ignore](#optionsignore) * [options.matchBase](#optionsmatchbase) * [options.noextglob](#optionsnoextglob) * [options.nonegate](#optionsnonegate) * [options.noglobstar](#optionsnoglobstar) * [options.nonull](#optionsnonull) * [options.nullglob](#optionsnullglob) * [options.onIgnore](#optionsonignore) * [options.onMatch](#optionsonmatch) * [options.onResult](#optionsonresult) * [options.posixSlashes](#optionsposixslashes) * [options.unescape](#optionsunescape) - [Extended globbing](#extended-globbing) * [Extglobs](#extglobs) * [Braces](#braces) * [Regex character classes](#regex-character-classes) * [Regex groups](#regex-groups) * [POSIX bracket expressions](#posix-bracket-expressions) - [Notes](#notes) * [Bash 4.3 parity](#bash-43-parity) * [Backslashes](#backslashes) - [Benchmarks](#benchmarks) * [Running benchmarks](#running-benchmarks) * [Latest results](#latest-results) - [Contributing](#contributing) - [About](#about) </details> ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save micromatch ``` ## Quickstart ```js const micromatch = require('micromatch'); // micromatch(list, patterns[, options]); ``` The [main export](#micromatch) takes a list of strings and one or more glob patterns: ```js console.log(micromatch(['foo', 'bar', 'baz', 'qux'], ['f*', 'b*'])) //=> ['foo', 'bar', 'baz'] console.log(micromatch(['foo', 'bar', 'baz', 'qux'], ['*', '!b*'])) //=> ['foo', 'qux'] ``` Use [.isMatch()](#ismatch) to for boolean matching: ```js console.log(micromatch.isMatch('foo', 'f*')) //=> true console.log(micromatch.isMatch('foo', ['b*', 'f*'])) //=> true ``` [Switching](#switching-to-micromatch) from minimatch and multimatch is easy! <br> ## Why use micromatch? > micromatch is a [replacement](#switching-to-micromatch) for minimatch and multimatch * Supports all of the same matching features as [minimatch](https://github.com/isaacs/minimatch) and [multimatch](https://github.com/sindresorhus/multimatch) * More complete support for the Bash 4.3 specification than minimatch and multimatch. Micromatch passes _all of the spec tests_ from bash, including some that bash still fails. * **Fast & Performant** - Loads in about 5ms and performs [fast matches](#benchmarks). * **Glob matching** - Using wildcards (`*` and `?`), globstars (`**`) for nested directories * **[Advanced globbing](#extended-globbing)** - Supports [extglobs](#extglobs), [braces](#braces-1), and [POSIX brackets](#posix-bracket-expressions), and support for escaping special characters with `\` or quotes. * **Accurate** - Covers more scenarios [than minimatch](https://github.com/yarnpkg/yarn/pull/3339) * **Well tested** - More than 5,000 [test assertions](./test) * **Windows support** - More reliable windows support than minimatch and multimatch. * **[Safe](https://github.com/micromatch/braces#braces-is-safe)** - Micromatch is not subject to DoS with brace patterns like minimatch and multimatch. ### Matching features * Support for multiple glob patterns (no need for wrappers like multimatch) * Wildcards (`**`, `*.js`) * Negation (`'!a/*.js'`, `'*!(b).js']`) * [extglobs](#extglobs) (`+(x|y)`, `!(a|b)`) * [POSIX character classes](#posix-bracket-expressions) (`[[:alpha:][:digit:]]`) * [brace expansion](https://github.com/micromatch/braces) (`foo/{1..5}.md`, `bar/{a,b,c}.js`) * regex character classes (`foo-[1-5].js`) * regex logical "or" (`foo/(abc|xyz).js`) You can mix and match these features to create whatever patterns you need! ## Switching to micromatch _(There is one notable difference between micromatch and minimatch in regards to how backslashes are handled. See [the notes about backslashes](#backslashes) for more information.)_ ### From minimatch Use [micromatch.isMatch()](#ismatch) instead of `minimatch()`: ```js console.log(micromatch.isMatch('foo', 'b*')); //=> false ``` Use [micromatch.match()](#match) instead of `minimatch.match()`: ```js console.log(micromatch.match(['foo', 'bar'], 'b*')); //=> 'bar' ``` ### From multimatch Same signature: ```js console.log(micromatch(['foo', 'bar', 'baz'], ['f*', '*z'])); //=> ['foo', 'baz'] ``` ## API **Params** * `list` **{String|Array<string>}**: List of strings to match. * `patterns` **{String|Array<string>}**: One or more glob patterns to use for matching. * `options` **{Object}**: See available [options](#options) * `returns` **{Array}**: Returns an array of matches **Example** ```js const mm = require('micromatch'); // mm(list, patterns[, options]); console.log(mm(['a.js', 'a.txt'], ['*.js'])); //=> [ 'a.js' ] ``` ### [.matcher](index.js#L104) Returns a matcher function from the given glob `pattern` and `options`. The returned function takes a string to match as its only argument and returns true if the string is a match. **Params** * `pattern` **{String}**: Glob pattern * `options` **{Object}** * `returns` **{Function}**: Returns a matcher function. **Example** ```js const mm = require('micromatch'); // mm.matcher(pattern[, options]); const isMatch = mm.matcher('*.!(*a)'); console.log(isMatch('a.a')); //=> false console.log(isMatch('a.b')); //=> true ``` ### [.isMatch](index.js#L123) Returns true if **any** of the given glob `patterns` match the specified `string`. **Params** * `str` **{String}**: The string to test. * `patterns` **{String|Array}**: One or more glob patterns to use for matching. * `[options]` **{Object}**: See available [options](#options). * `returns` **{Boolean}**: Returns true if any patterns match `str` **Example** ```js const mm = require('micromatch'); // mm.isMatch(string, patterns[, options]); console.log(mm.isMatch('a.a', ['b.*', '*.a'])); //=> true console.log(mm.isMatch('a.a', 'b.*')); //=> false ``` ### [.not](index.js#L148) Returns a list of strings that _**do not match any**_ of the given `patterns`. **Params** * `list` **{Array}**: Array of strings to match. * `patterns` **{String|Array}**: One or more glob pattern to use for matching. * `options` **{Object}**: See available [options](#options) for changing how matches are performed * `returns` **{Array}**: Returns an array of strings that **do not match** the given patterns. **Example** ```js const mm = require('micromatch'); // mm.not(list, patterns[, options]); console.log(mm.not(['a.a', 'b.b', 'c.c'], '*.a')); //=> ['b.b', 'c.c'] ``` ### [.contains](index.js#L188) Returns true if the given `string` contains the given pattern. Similar to [.isMatch](#isMatch) but the pattern can match any part of the string. **Params** * `str` **{String}**: The string to match. * `patterns` **{String|Array}**: Glob pattern to use for matching. * `options` **{Object}**: See available [options](#options) for changing how matches are performed * `returns` **{Boolean}**: Returns true if any of the patterns matches any part of `str`. **Example** ```js var mm = require('micromatch'); // mm.contains(string, pattern[, options]); console.log(mm.contains('aa/bb/cc', '*b')); //=> true console.log(mm.contains('aa/bb/cc', '*d')); //=> false ``` ### [.matchKeys](index.js#L230) Filter the keys of the given object with the given `glob` pattern and `options`. Does not attempt to match nested keys. If you need this feature, use [glob-object](https://github.com/jonschlinkert/glob-object) instead. **Params** * `object` **{Object}**: The object with keys to filter. * `patterns` **{String|Array}**: One or more glob patterns to use for matching. * `options` **{Object}**: See available [options](#options) for changing how matches are performed * `returns` **{Object}**: Returns an object with only keys that match the given patterns. **Example** ```js const mm = require('micromatch'); // mm.matchKeys(object, patterns[, options]); const obj = { aa: 'a', ab: 'b', ac: 'c' }; console.log(mm.matchKeys(obj, '*b')); //=> { ab: 'b' } ``` ### [.some](index.js#L259) Returns true if some of the strings in the given `list` match any of the given glob `patterns`. **Params** * `list` **{String|Array}**: The string or array of strings to test. Returns as soon as the first match is found. * `patterns` **{String|Array}**: One or more glob patterns to use for matching. * `options` **{Object}**: See available [options](#options) for changing how matches are performed * `returns` **{Boolean}**: Returns true if any `patterns` matches any of the strings in `list` **Example** ```js const mm = require('micromatch'); // mm.some(list, patterns[, options]); console.log(mm.some(['foo.js', 'bar.js'], ['*.js', '!foo.js'])); // true console.log(mm.some(['foo.js'], ['*.js', '!foo.js'])); // false ``` ### [.every](index.js#L295) Returns true if every string in the given `list` matches any of the given glob `patterns`. **Params** * `list` **{String|Array}**: The string or array of strings to test. * `patterns` **{String|Array}**: One or more glob patterns to use for matching. * `options` **{Object}**: See available [options](#options) for changing how matches are performed * `returns` **{Boolean}**: Returns true if all `patterns` matches all of the strings in `list` **Example** ```js const mm = require('micromatch'); // mm.every(list, patterns[, options]); console.log(mm.every('foo.js', ['foo.js'])); // true console.log(mm.every(['foo.js', 'bar.js'], ['*.js'])); // true console.log(mm.every(['foo.js', 'bar.js'], ['*.js', '!foo.js'])); // false console.log(mm.every(['foo.js'], ['*.js', '!foo.js'])); // false ``` ### [.all](index.js#L334) Returns true if **all** of the given `patterns` match the specified string. **Params** * `str` **{String|Array}**: The string to test. * `patterns` **{String|Array}**: One or more glob patterns to use for matching. * `options` **{Object}**: See available [options](#options) for changing how matches are performed * `returns` **{Boolean}**: Returns true if any patterns match `str` **Example** ```js const mm = require('micromatch'); // mm.all(string, patterns[, options]); console.log(mm.all('foo.js', ['foo.js'])); // true console.log(mm.all('foo.js', ['*.js', '!foo.js'])); // false console.log(mm.all('foo.js', ['*.js', 'foo.js'])); // true console.log(mm.all('foo.js', ['*.js', 'f*', '*o*', '*o.js'])); // true ``` ### [.capture](index.js#L361) Returns an array of matches captured by `pattern` in `string, or`null` if the pattern did not match. **Params** * `glob` **{String}**: Glob pattern to use for matching. * `input` **{String}**: String to match * `options` **{Object}**: See available [options](#options) for changing how matches are performed * `returns` **{Array|null}**: Returns an array of captures if the input matches the glob pattern, otherwise `null`. **Example** ```js const mm = require('micromatch'); // mm.capture(pattern, string[, options]); console.log(mm.capture('test/*.js', 'test/foo.js')); //=> ['foo'] console.log(mm.capture('test/*.js', 'foo/bar.css')); //=> null ``` ### [.makeRe](index.js#L387) Create a regular expression from the given glob `pattern`. **Params** * `pattern` **{String}**: A glob pattern to convert to regex. * `options` **{Object}** * `returns` **{RegExp}**: Returns a regex created from the given pattern. **Example** ```js const mm = require('micromatch'); // mm.makeRe(pattern[, options]); console.log(mm.makeRe('*.js')); //=> /^(?:(\.[\\\/])?(?!\.)(?=.)[^\/]*?\.js)$/ ``` ### [.scan](index.js#L403) Scan a glob pattern to separate the pattern into segments. Used by the [split](#split) method. **Params** * `pattern` **{String}** * `options` **{Object}** * `returns` **{Object}**: Returns an object with **Example** ```js const mm = require('micromatch'); const state = mm.scan(pattern[, options]); ``` ### [.parse](index.js#L419) Parse a glob pattern to create the source string for a regular expression. **Params** * `glob` **{String}** * `options` **{Object}** * `returns` **{Object}**: Returns an object with useful properties and output to be used as regex source string. **Example** ```js const mm = require('micromatch'); const state = mm(pattern[, options]); ``` ### [.braces](index.js#L446) Process the given brace `pattern`. **Params** * `pattern` **{String}**: String with brace pattern to process. * `options` **{Object}**: Any [options](#options) to change how expansion is performed. See the [braces](https://github.com/micromatch/braces) library for all available options. * `returns` **{Array}** **Example** ```js const { braces } = require('micromatch'); console.log(braces('foo/{a,b,c}/bar')); //=> [ 'foo/(a|b|c)/bar' ] console.log(braces('foo/{a,b,c}/bar', { expand: true })); //=> [ 'foo/a/bar', 'foo/b/bar', 'foo/c/bar' ] ``` ## Options | **Option** | **Type** | **Default value** | **Description** | | --- | --- | --- | --- | | `basename` | `boolean` | `false` | If set, then patterns without slashes will be matched against the basename of the path if it contains slashes. For example, `a?b` would match the path `/xyz/123/acb`, but not `/xyz/acb/123`. | | `bash` | `boolean` | `false` | Follow bash matching rules more strictly - disallows backslashes as escape characters, and treats single stars as globstars (`**`). | | `capture` | `boolean` | `undefined` | Return regex matches in supporting methods. | | `contains` | `boolean` | `undefined` | Allows glob to match any part of the given string(s). | | `cwd` | `string` | `process.cwd()` | Current working directory. Used by `picomatch.split()` | | `debug` | `boolean` | `undefined` | Debug regular expressions when an error is thrown. | | `dot` | `boolean` | `false` | Match dotfiles. Otherwise dotfiles are ignored unless a `.` is explicitly defined in the pattern. | | `expandRange` | `function` | `undefined` | Custom function for expanding ranges in brace patterns, such as `{a..z}`. The function receives the range values as two arguments, and it must return a string to be used in the generated regex. It's recommended that returned strings be wrapped in parentheses. This option is overridden by the `expandBrace` option. | | `failglob` | `boolean` | `false` | Similar to the `failglob` behavior in Bash, throws an error when no matches are found. Based on the bash option of the same name. | | `fastpaths` | `boolean` | `true` | To speed up processing, full parsing is skipped for a handful common glob patterns. Disable this behavior by setting this option to `false`. | | `flags` | `boolean` | `undefined` | Regex flags to use in the generated regex. If defined, the `nocase` option will be overridden. | | [format](#optionsformat) | `function` | `undefined` | Custom function for formatting the returned string. This is useful for removing leading slashes, converting Windows paths to Posix paths, etc. | | `ignore` | `array\|string` | `undefined` | One or more glob patterns for excluding strings that should not be matched from the result. | | `keepQuotes` | `boolean` | `false` | Retain quotes in the generated regex, since quotes may also be used as an alternative to backslashes. | | `literalBrackets` | `boolean` | `undefined` | When `true`, brackets in the glob pattern will be escaped so that only literal brackets will be matched. | | `lookbehinds` | `boolean` | `true` | Support regex positive and negative lookbehinds. Note that you must be using Node 8.1.10 or higher to enable regex lookbehinds. | | `matchBase` | `boolean` | `false` | Alias for `basename` | | `maxLength` | `boolean` | `65536` | Limit the max length of the input string. An error is thrown if the input string is longer than this value. | | `nobrace` | `boolean` | `false` | Disable brace matching, so that `{a,b}` and `{1..3}` would be treated as literal characters. | | `nobracket` | `boolean` | `undefined` | Disable matching with regex brackets. | | `nocase` | `boolean` | `false` | Perform case-insensitive matching. Equivalent to the regex `i` flag. Note that this option is ignored when the `flags` option is defined. | | `nodupes` | `boolean` | `true` | Deprecated, use `nounique` instead. This option will be removed in a future major release. By default duplicates are removed. Disable uniquification by setting this option to false. | | `noext` | `boolean` | `false` | Alias for `noextglob` | | `noextglob` | `boolean` | `false` | Disable support for matching with [extglobs](#extglobs) (like `+(a\|b)`) | | `noglobstar` | `boolean` | `false` | Disable support for matching nested directories with globstars (`**`) | | `nonegate` | `boolean` | `false` | Disable support for negating with leading `!` | | `noquantifiers` | `boolean` | `false` | Disable support for regex quantifiers (like `a{1,2}`) and treat them as brace patterns to be expanded. | | [onIgnore](#optionsonIgnore) | `function` | `undefined` | Function to be called on ignored items. | | [onMatch](#optionsonMatch) | `function` | `undefined` | Function to be called on matched items. | | [onResult](#optionsonResult) | `function` | `undefined` | Function to be called on all items, regardless of whether or not they are matched or ignored. | | `posix` | `boolean` | `false` | Support [POSIX character classes](#posix-bracket-expressions) ("posix brackets"). | | `posixSlashes` | `boolean` | `undefined` | Convert all slashes in file paths to forward slashes. This does not convert slashes in the glob pattern itself | | `prepend` | `string` | `undefined` | String to prepend to the generated regex used for matching. | | `regex` | `boolean` | `false` | Use regular expression rules for `+` (instead of matching literal `+`), and for stars that follow closing parentheses or brackets (as in `)*` and `]*`). | | `strictBrackets` | `boolean` | `undefined` | Throw an error if brackets, braces, or parens are imbalanced. | | `strictSlashes` | `boolean` | `undefined` | When true, picomatch won't match trailing slashes with single stars. | | `unescape` | `boolean` | `undefined` | Remove preceding backslashes from escaped glob characters before creating the regular expression to perform matches. | | `unixify` | `boolean` | `undefined` | Alias for `posixSlashes`, for backwards compatitibility. | ## Options Examples ### options.basename Allow glob patterns without slashes to match a file path based on its basename. Same behavior as [minimatch](https://github.com/isaacs/minimatch) option `matchBase`. **Type**: `Boolean` **Default**: `false` **Example** ```js micromatch(['a/b.js', 'a/c.md'], '*.js'); //=> [] micromatch(['a/b.js', 'a/c.md'], '*.js', { basename: true }); //=> ['a/b.js'] ``` ### options.bash Enabled by default, this option enforces bash-like behavior with stars immediately following a bracket expression. Bash bracket expressions are similar to regex character classes, but unlike regex, a star following a bracket expression **does not repeat the bracketed characters**. Instead, the star is treated the same as any other star. **Type**: `Boolean` **Default**: `true` **Example** ```js const files = ['abc', 'ajz']; console.log(micromatch(files, '[a-c]*')); //=> ['abc', 'ajz'] console.log(micromatch(files, '[a-c]*', { bash: false })); ``` ### options.expandRange **Type**: `function` **Default**: `undefined` Custom function for expanding ranges in brace patterns. The [fill-range](https://github.com/jonschlinkert/fill-range) library is ideal for this purpose, or you can use custom code to do whatever you need. **Example** The following example shows how to create a glob that matches a numeric folder name between `01` and `25`, with leading zeros. ```js const fill = require('fill-range'); const regex = micromatch.makeRe('foo/{01..25}/bar', { expandRange(a, b) { return `(${fill(a, b, { toRegex: true })})`; } }); console.log(regex) //=> /^(?:foo\/((?:0[1-9]|1[0-9]|2[0-5]))\/bar)$/ console.log(regex.test('foo/00/bar')) // false console.log(regex.test('foo/01/bar')) // true console.log(regex.test('foo/10/bar')) // true console.log(regex.test('foo/22/bar')) // true console.log(regex.test('foo/25/bar')) // true console.log(regex.test('foo/26/bar')) // false ``` ### options.format **Type**: `function` **Default**: `undefined` Custom function for formatting strings before they're matched. **Example** ```js // strip leading './' from strings const format = str => str.replace(/^\.\//, ''); const isMatch = picomatch('foo/*.js', { format }); console.log(isMatch('./foo/bar.js')) //=> true ``` ### options.ignore String or array of glob patterns to match files to ignore. **Type**: `String|Array` **Default**: `undefined` ```js const isMatch = micromatch.matcher('*', { ignore: 'f*' }); console.log(isMatch('foo')) //=> false console.log(isMatch('bar')) //=> true console.log(isMatch('baz')) //=> true ``` ### options.matchBase Alias for [options.basename](#options-basename). ### options.noextglob Disable extglob support, so that [extglobs](#extglobs) are regarded as literal characters. **Type**: `Boolean` **Default**: `undefined` **Examples** ```js console.log(micromatch(['a/z', 'a/b', 'a/!(z)'], 'a/!(z)')); //=> ['a/b', 'a/!(z)'] console.log(micromatch(['a/z', 'a/b', 'a/!(z)'], 'a/!(z)', { noextglob: true })); //=> ['a/!(z)'] (matches only as literal characters) ``` ### options.nonegate Disallow negation (`!`) patterns, and treat leading `!` as a literal character to match. **Type**: `Boolean` **Default**: `undefined` ### options.noglobstar Disable matching with globstars (`**`). **Type**: `Boolean` **Default**: `undefined` ```js micromatch(['a/b', 'a/b/c', 'a/b/c/d'], 'a/**'); //=> ['a/b', 'a/b/c', 'a/b/c/d'] micromatch(['a/b', 'a/b/c', 'a/b/c/d'], 'a/**', {noglobstar: true}); //=> ['a/b'] ``` ### options.nonull Alias for [options.nullglob](#options-nullglob). ### options.nullglob If `true`, when no matches are found the actual (arrayified) glob pattern is returned instead of an empty array. Same behavior as [minimatch](https://github.com/isaacs/minimatch) option `nonull`. **Type**: `Boolean` **Default**: `undefined` ### options.onIgnore ```js const onIgnore = ({ glob, regex, input, output }) => { console.log({ glob, regex, input, output }); // { glob: '*', regex: /^(?:(?!\.)(?=.)[^\/]*?\/?)$/, input: 'foo', output: 'foo' } }; const isMatch = micromatch.matcher('*', { onIgnore, ignore: 'f*' }); isMatch('foo'); isMatch('bar'); isMatch('baz'); ``` ### options.onMatch ```js const onMatch = ({ glob, regex, input, output }) => { console.log({ input, output }); // { input: 'some\\path', output: 'some/path' } // { input: 'some\\path', output: 'some/path' } // { input: 'some\\path', output: 'some/path' } }; const isMatch = micromatch.matcher('**', { onMatch, posixSlashes: true }); isMatch('some\\path'); isMatch('some\\path'); isMatch('some\\path'); ``` ### options.onResult ```js const onResult = ({ glob, regex, input, output }) => { console.log({ glob, regex, input, output }); }; const isMatch = micromatch('*', { onResult, ignore: 'f*' }); isMatch('foo'); isMatch('bar'); isMatch('baz'); ``` ### options.posixSlashes Convert path separators on returned files to posix/unix-style forward slashes. Aliased as `unixify` for backwards compatibility. **Type**: `Boolean` **Default**: `true` on windows, `false` everywhere else. **Example** ```js console.log(micromatch.match(['a\\b\\c'], 'a/**')); //=> ['a/b/c'] console.log(micromatch.match(['a\\b\\c'], { posixSlashes: false })); //=> ['a\\b\\c'] ``` ### options.unescape Remove backslashes from escaped glob characters before creating the regular expression to perform matches. **Type**: `Boolean` **Default**: `undefined` **Example** In this example we want to match a literal `*`: ```js console.log(micromatch.match(['abc', 'a\\*c'], 'a\\*c')); //=> ['a\\*c'] console.log(micromatch.match(['abc', 'a\\*c'], 'a\\*c', { unescape: true })); //=> ['a*c'] ``` <br> <br> ## Extended globbing Micromatch supports the following extended globbing features. ### Extglobs Extended globbing, as described by the bash man page: | **pattern** | **regex equivalent** | **description** | | --- | --- | --- | | `?(pattern)` | `(pattern)?` | Matches zero or one occurrence of the given patterns | | `*(pattern)` | `(pattern)*` | Matches zero or more occurrences of the given patterns | | `+(pattern)` | `(pattern)+` | Matches one or more occurrences of the given patterns | | `@(pattern)` | `(pattern)` <sup>*</sup> | Matches one of the given patterns | | `!(pattern)` | N/A (equivalent regex is much more complicated) | Matches anything except one of the given patterns | <sup><strong>*</strong></sup> Note that `@` isn't a regex character. ### Braces Brace patterns can be used to match specific ranges or sets of characters. **Example** The pattern `{f,b}*/{1..3}/{b,q}*` would match any of following strings: ``` foo/1/bar foo/2/bar foo/3/bar baz/1/qux baz/2/qux baz/3/qux ``` Visit [braces](https://github.com/micromatch/braces) to see the full range of features and options related to brace expansion, or to create brace matching or expansion related issues. ### Regex character classes Given the list: `['a.js', 'b.js', 'c.js', 'd.js', 'E.js']`: * `[ac].js`: matches both `a` and `c`, returning `['a.js', 'c.js']` * `[b-d].js`: matches from `b` to `d`, returning `['b.js', 'c.js', 'd.js']` * `a/[A-Z].js`: matches and uppercase letter, returning `['a/E.md']` Learn about [regex character classes](http://www.regular-expressions.info/charclass.html). ### Regex groups Given `['a.js', 'b.js', 'c.js', 'd.js', 'E.js']`: * `(a|c).js`: would match either `a` or `c`, returning `['a.js', 'c.js']` * `(b|d).js`: would match either `b` or `d`, returning `['b.js', 'd.js']` * `(b|[A-Z]).js`: would match either `b` or an uppercase letter, returning `['b.js', 'E.js']` As with regex, parens can be nested, so patterns like `((a|b)|c)/b` will work. Although brace expansion might be friendlier to use, depending on preference. ### POSIX bracket expressions POSIX brackets are intended to be more user-friendly than regex character classes. This of course is in the eye of the beholder. **Example** ```js console.log(micromatch.isMatch('a1', '[[:alpha:][:digit:]]')) //=> true console.log(micromatch.isMatch('a1', '[[:alpha:][:alpha:]]')) //=> false ``` *** ## Notes ### Bash 4.3 parity Whenever possible matching behavior is based on behavior Bash 4.3, which is mostly consistent with minimatch. However, it's suprising how many edge cases and rabbit holes there are with glob matching, and since there is no real glob specification, and micromatch is more accurate than both Bash and minimatch, there are cases where best-guesses were made for behavior. In a few cases where Bash had no answers, we used wildmatch (used by git) as a fallback. ### Backslashes There is an important, notable difference between minimatch and micromatch _in regards to how backslashes are handled_ in glob patterns. * Micromatch exclusively and explicitly reserves backslashes for escaping characters in a glob pattern, even on windows, which is consistent with bash behavior. _More importantly, unescaping globs can result in unsafe regular expressions_. * Minimatch converts all backslashes to forward slashes, which means you can't use backslashes to escape any characters in your glob patterns. We made this decision for micromatch for a couple of reasons: * Consistency with bash conventions. * Glob patterns are not filepaths. They are a type of [regular language](https://en.wikipedia.org/wiki/Regular_language) that is converted to a JavaScript regular expression. Thus, when forward slashes are defined in a glob pattern, the resulting regular expression will match windows or POSIX path separators just fine. **A note about joining paths to globs** Note that when you pass something like `path.join('foo', '*')` to micromatch, you are creating a filepath and expecting it to still work as a glob pattern. This causes problems on windows, since the `path.sep` is `\\`. In other words, since `\\` is reserved as an escape character in globs, on windows `path.join('foo', '*')` would result in `foo\\*`, which tells micromatch to match `*` as a literal character. This is the same behavior as bash. To solve this, you might be inspired to do something like `'foo\\*'.replace(/\\/g, '/')`, but this causes another, potentially much more serious, problem. ## Benchmarks ### Running benchmarks Install dependencies for running benchmarks: ```sh $ cd bench && npm install ``` Run the benchmarks: ```sh $ npm run bench ``` ### Latest results As of April 10, 2021 (longer bars are better): ```sh # .makeRe star micromatch x 2,232,802 ops/sec ±2.34% (89 runs sampled)) minimatch x 781,018 ops/sec ±6.74% (92 runs sampled)) # .makeRe star; dot=true micromatch x 1,863,453 ops/sec ±0.74% (93 runs sampled) minimatch x 723,105 ops/sec ±0.75% (93 runs sampled) # .makeRe globstar micromatch x 1,624,179 ops/sec ±2.22% (91 runs sampled) minimatch x 1,117,230 ops/sec ±2.78% (86 runs sampled)) # .makeRe globstars micromatch x 1,658,642 ops/sec ±0.86% (92 runs sampled) minimatch x 741,224 ops/sec ±1.24% (89 runs sampled)) # .makeRe with leading star micromatch x 1,525,014 ops/sec ±1.63% (90 runs sampled) minimatch x 561,074 ops/sec ±3.07% (89 runs sampled) # .makeRe - braces micromatch x 172,478 ops/sec ±2.37% (78 runs sampled) minimatch x 96,087 ops/sec ±2.34% (88 runs sampled))) # .makeRe braces - range (expanded) micromatch x 26,973 ops/sec ±0.84% (89 runs sampled) minimatch x 3,023 ops/sec ±0.99% (90 runs sampled)) # .makeRe braces - range (compiled) micromatch x 152,892 ops/sec ±1.67% (83 runs sampled) minimatch x 992 ops/sec ±3.50% (89 runs sampled)d)) # .makeRe braces - nested ranges (expanded) micromatch x 15,816 ops/sec ±13.05% (80 runs sampled) minimatch x 2,953 ops/sec ±1.64% (91 runs sampled) # .makeRe braces - nested ranges (compiled) micromatch x 110,881 ops/sec ±1.85% (82 runs sampled) minimatch x 1,008 ops/sec ±1.51% (91 runs sampled) # .makeRe braces - set (compiled) micromatch x 134,930 ops/sec ±3.54% (63 runs sampled)) minimatch x 43,242 ops/sec ±0.60% (93 runs sampled) # .makeRe braces - nested sets (compiled) micromatch x 94,455 ops/sec ±1.74% (69 runs sampled)) minimatch x 27,720 ops/sec ±1.84% (93 runs sampled)) ``` ## Contributing All contributions are welcome! Please read [the contributing guide](.github/contributing.md) to get started. **Bug reports** Please create an issue if you encounter a bug or matching behavior that doesn't seem correct. If you find a matching-related issue, please: * [research existing issues first](../../issues) (open and closed) * visit the [GNU Bash documentation](https://www.gnu.org/software/bash/manual/) to see how Bash deals with the pattern * visit the [minimatch](https://github.com/isaacs/minimatch) documentation to cross-check expected behavior in node.js * if all else fails, since there is no real specification for globs we will probably need to discuss expected behavior and decide how to resolve it. which means any detail you can provide to help with this discussion would be greatly appreciated. **Platform issues** It's important to us that micromatch work consistently on all platforms. If you encounter any platform-specific matching or path related issues, please let us know (pull requests are also greatly appreciated). ## About <details> <summary><strong>Contributing</strong></summary> Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). Please read the [contributing guide](.github/contributing.md) for advice on opening issues, pull requests, and coding standards. </details> <details> <summary><strong>Running Tests</strong></summary> Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` </details> <details> <summary><strong>Building docs</strong></summary> _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` </details> ### Related projects You might also be interested in these projects: * [braces](https://www.npmjs.com/package/braces): Bash-like brace expansion, implemented in JavaScript. Safer than other brace expansion libs, with complete support… [more](https://github.com/micromatch/braces) | [homepage](https://github.com/micromatch/braces "Bash-like brace expansion, implemented in JavaScript. Safer than other brace expansion libs, with complete support for the Bash 4.3 braces specification, without sacrificing speed.") * [expand-brackets](https://www.npmjs.com/package/expand-brackets): Expand POSIX bracket expressions (character classes) in glob patterns. | [homepage](https://github.com/micromatch/expand-brackets "Expand POSIX bracket expressions (character classes) in glob patterns.") * [extglob](https://www.npmjs.com/package/extglob): Extended glob support for JavaScript. Adds (almost) the expressive power of regular expressions to glob… [more](https://github.com/micromatch/extglob) | [homepage](https://github.com/micromatch/extglob "Extended glob support for JavaScript. Adds (almost) the expressive power of regular expressions to glob patterns.") * [fill-range](https://www.npmjs.com/package/fill-range): Fill in a range of numbers or letters, optionally passing an increment or `step` to… [more](https://github.com/jonschlinkert/fill-range) | [homepage](https://github.com/jonschlinkert/fill-range "Fill in a range of numbers or letters, optionally passing an increment or `step` to use, or create a regex-compatible range with `options.toRegex`") * [nanomatch](https://www.npmjs.com/package/nanomatch): Fast, minimal glob matcher for node.js. Similar to micromatch, minimatch and multimatch, but complete Bash… [more](https://github.com/micromatch/nanomatch) | [homepage](https://github.com/micromatch/nanomatch "Fast, minimal glob matcher for node.js. Similar to micromatch, minimatch and multimatch, but complete Bash 4.3 wildcard support only (no support for exglobs, posix brackets or braces)") ### Contributors | **Commits** | **Contributor** | | --- | --- | | 508 | [jonschlinkert](https://github.com/jonschlinkert) | | 12 | [es128](https://github.com/es128) | | 8 | [doowb](https://github.com/doowb) | | 6 | [paulmillr](https://github.com/paulmillr) | | 5 | [mrmlnc](https://github.com/mrmlnc) | | 4 | [danez](https://github.com/danez) | | 3 | [DrPizza](https://github.com/DrPizza) | | 2 | [TrySound](https://github.com/TrySound) | | 2 | [mceIdo](https://github.com/mceIdo) | | 2 | [Glazy](https://github.com/Glazy) | | 2 | [MartinKolarik](https://github.com/MartinKolarik) | | 2 | [Tvrqvoise](https://github.com/Tvrqvoise) | | 1 | [amilajack](https://github.com/amilajack) | | 1 | [Cslove](https://github.com/Cslove) | | 1 | [devongovett](https://github.com/devongovett) | | 1 | [DianeLooney](https://github.com/DianeLooney) | | 1 | [UltCombo](https://github.com/UltCombo) | | 1 | [frangio](https://github.com/frangio) | | 1 | [juszczykjakub](https://github.com/juszczykjakub) | | 1 | [muescha](https://github.com/muescha) | | 1 | [sebdeckers](https://github.com/sebdeckers) | | 1 | [tomByrer](https://github.com/tomByrer) | | 1 | [fidian](https://github.com/fidian) | | 1 | [simlu](https://github.com/simlu) | | 1 | [wtgtybhertgeghgtwtg](https://github.com/wtgtybhertgeghgtwtg) | | 1 | [yvele](https://github.com/yvele) | ### Author **Jon Schlinkert** * [GitHub Profile](https://github.com/jonschlinkert) * [Twitter Profile](https://twitter.com/jonschlinkert) * [LinkedIn Profile](https://linkedin.com/in/jonschlinkert) ### License Copyright © 2021, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT License](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.8.0, on April 10, 2021._ # cacheable-request > Wrap native HTTP requests with RFC compliant cache support [](https://travis-ci.org/lukechilds/cacheable-request) [](https://coveralls.io/github/lukechilds/cacheable-request?branch=master) [](https://www.npmjs.com/package/cacheable-request) [](https://www.npmjs.com/package/cacheable-request) [RFC 7234](http://httpwg.org/specs/rfc7234.html) compliant HTTP caching for native Node.js HTTP/HTTPS requests. Caching works out of the box in memory or is easily pluggable with a wide range of storage adapters. **Note:** This is a low level wrapper around the core HTTP modules, it's not a high level request library. ## Features - Only stores cacheable responses as defined by RFC 7234 - Fresh cache entries are served directly from cache - Stale cache entries are revalidated with `If-None-Match`/`If-Modified-Since` headers - 304 responses from revalidation requests use cached body - Updates `Age` header on cached responses - Can completely bypass cache on a per request basis - In memory cache by default - Official support for Redis, MongoDB, SQLite, PostgreSQL and MySQL storage adapters - Easily plug in your own or third-party storage adapters - If DB connection fails, cache is automatically bypassed ([disabled by default](#optsautomaticfailover)) - Adds cache support to any existing HTTP code with minimal changes - Uses [http-cache-semantics](https://github.com/pornel/http-cache-semantics) internally for HTTP RFC 7234 compliance ## Install ```shell npm install cacheable-request ``` ## Usage ```js const http = require('http'); const CacheableRequest = require('cacheable-request'); // Then instead of const req = http.request('http://example.com', cb); req.end(); // You can do const cacheableRequest = new CacheableRequest(http.request); const cacheReq = cacheableRequest('http://example.com', cb); cacheReq.on('request', req => req.end()); // Future requests to 'example.com' will be returned from cache if still valid // You pass in any other http.request API compatible method to be wrapped with cache support: const cacheableRequest = new CacheableRequest(https.request); const cacheableRequest = new CacheableRequest(electron.net); ``` ## Storage Adapters `cacheable-request` uses [Keyv](https://github.com/lukechilds/keyv) to support a wide range of storage adapters. For example, to use Redis as a cache backend, you just need to install the official Redis Keyv storage adapter: ``` npm install @keyv/redis ``` And then you can pass `CacheableRequest` your connection string: ```js const cacheableRequest = new CacheableRequest(http.request, 'redis://user:pass@localhost:6379'); ``` [View all official Keyv storage adapters.](https://github.com/lukechilds/keyv#official-storage-adapters) Keyv also supports anything that follows the Map API so it's easy to write your own storage adapter or use a third-party solution. e.g The following are all valid storage adapters ```js const storageAdapter = new Map(); // or const storageAdapter = require('./my-storage-adapter'); // or const QuickLRU = require('quick-lru'); const storageAdapter = new QuickLRU({ maxSize: 1000 }); const cacheableRequest = new CacheableRequest(http.request, storageAdapter); ``` View the [Keyv docs](https://github.com/lukechilds/keyv) for more information on how to use storage adapters. ## API ### new cacheableRequest(request, [storageAdapter]) Returns the provided request function wrapped with cache support. #### request Type: `function` Request function to wrap with cache support. Should be [`http.request`](https://nodejs.org/api/http.html#http_http_request_options_callback) or a similar API compatible request function. #### storageAdapter Type: `Keyv storage adapter`<br> Default: `new Map()` A [Keyv](https://github.com/lukechilds/keyv) storage adapter instance, or connection string if using with an official Keyv storage adapter. ### Instance #### cacheableRequest(opts, [cb]) Returns an event emitter. ##### opts Type: `object`, `string` - Any of the default request functions options. - Any [`http-cache-semantics`](https://github.com/kornelski/http-cache-semantics#constructor-options) options. - Any of the following: ###### opts.cache Type: `boolean`<br> Default: `true` If the cache should be used. Setting this to false will completely bypass the cache for the current request. ###### opts.strictTtl Type: `boolean`<br> Default: `false` If set to `true` once a cached resource has expired it is deleted and will have to be re-requested. If set to `false` (default), after a cached resource's TTL expires it is kept in the cache and will be revalidated on the next request with `If-None-Match`/`If-Modified-Since` headers. ###### opts.maxTtl Type: `number`<br> Default: `undefined` Limits TTL. The `number` represents milliseconds. ###### opts.automaticFailover Type: `boolean`<br> Default: `false` When set to `true`, if the DB connection fails we will automatically fallback to a network request. DB errors will still be emitted to notify you of the problem even though the request callback may succeed. ###### opts.forceRefresh Type: `boolean`<br> Default: `false` Forces refreshing the cache. If the response could be retrieved from the cache, it will perform a new request and override the cache instead. ##### cb Type: `function` The callback function which will receive the response as an argument. The response can be either a [Node.js HTTP response stream](https://nodejs.org/api/http.html#http_class_http_incomingmessage) or a [responselike object](https://github.com/lukechilds/responselike). The response will also have a `fromCache` property set with a boolean value. ##### .on('request', request) `request` event to get the request object of the request. **Note:** This event will only fire if an HTTP request is actually made, not when a response is retrieved from cache. However, you should always handle the `request` event to end the request and handle any potential request errors. ##### .on('response', response) `response` event to get the response object from the HTTP request or cache. ##### .on('error', error) `error` event emitted in case of an error with the cache. Errors emitted here will be an instance of `CacheableRequest.RequestError` or `CacheableRequest.CacheError`. You will only ever receive a `RequestError` if the request function throws (normally caused by invalid user input). Normal request errors should be handled inside the `request` event. To properly handle all error scenarios you should use the following pattern: ```js cacheableRequest('example.com', cb) .on('error', err => { if (err instanceof CacheableRequest.CacheError) { handleCacheError(err); // Cache error } else if (err instanceof CacheableRequest.RequestError) { handleRequestError(err); // Request function thrown } }) .on('request', req => { req.on('error', handleRequestError); // Request error emitted req.end(); }); ``` **Note:** Database connection errors are emitted here, however `cacheable-request` will attempt to re-request the resource and bypass the cache on a connection error. Therefore a database connection error doesn't necessarily mean the request won't be fulfilled. ## License MIT © Luke Childs base64-js ========= `base64-js` does basic base64 encoding/decoding in pure JS. [](http://travis-ci.org/beatgammit/base64-js) Many browsers already have base64 encoding/decoding functionality, but it is for text data, not all-purpose binary data. Sometimes encoding/decoding binary data in the browser is useful, and that is what this module does. ## install With [npm](https://npmjs.org) do: `npm install base64-js` and `var base64js = require('base64-js')` For use in web browsers do: `<script src="base64js.min.js"></script>` [Get supported base64-js with the Tidelift Subscription](https://tidelift.com/subscription/pkg/npm-base64-js?utm_source=npm-base64-js&utm_medium=referral&utm_campaign=readme) ## methods `base64js` has three exposed functions, `byteLength`, `toByteArray` and `fromByteArray`, which both take a single argument. * `byteLength` - Takes a base64 string and returns length of byte array * `toByteArray` - Takes a base64 string and returns a byte array * `fromByteArray` - Takes a byte array and returns a base64 string ## license MIT # set-blocking [](https://travis-ci.org/yargs/set-blocking) [](https://www.npmjs.com/package/set-blocking) [](https://coveralls.io/r/yargs/set-blocking?branch=master) [](https://github.com/conventional-changelog/standard-version) set blocking `stdio` and `stderr` ensuring that terminal output does not truncate. ```js const setBlocking = require('set-blocking') setBlocking(true) console.log(someLargeStringToOutput) ``` ## Historical Context/Word of Warning This was created as a shim to address the bug discussed in [node #6456](https://github.com/nodejs/node/issues/6456). This bug crops up on newer versions of Node.js (`0.12+`), truncating terminal output. You should be mindful of the side-effects caused by using `set-blocking`: * if your module sets blocking to `true`, it will effect other modules consuming your library. In [yargs](https://github.com/yargs/yargs/blob/master/yargs.js#L653) we only call `setBlocking(true)` once we already know we are about to call `process.exit(code)`. * this patch will not apply to subprocesses spawned with `isTTY = true`, this is the [default `spawn()` behavior](https://nodejs.org/api/child_process.html#child_process_child_process_spawn_command_args_options). ## License ISC # yargs-parser  [](https://www.npmjs.com/package/yargs-parser) [](https://conventionalcommits.org)  The mighty option parser used by [yargs](https://github.com/yargs/yargs). visit the [yargs website](http://yargs.js.org/) for more examples, and thorough usage instructions. <img width="250" src="https://raw.githubusercontent.com/yargs/yargs-parser/main/yargs-logo.png"> ## Example ```sh npm i yargs-parser --save ``` ```js const argv = require('yargs-parser')(process.argv.slice(2)) console.log(argv) ``` ```console $ node example.js --foo=33 --bar hello { _: [], foo: 33, bar: 'hello' } ``` _or parse a string!_ ```js const argv = require('yargs-parser')('--foo=99 --bar=33') console.log(argv) ``` ```console { _: [], foo: 99, bar: 33 } ``` Convert an array of mixed types before passing to `yargs-parser`: ```js const parse = require('yargs-parser') parse(['-f', 11, '--zoom', 55].join(' ')) // <-- array to string parse(['-f', 11, '--zoom', 55].map(String)) // <-- array of strings ``` ## Deno Example As of `v19` `yargs-parser` supports [Deno](https://github.com/denoland/deno): ```typescript import parser from "https://deno.land/x/yargs_parser/deno.ts"; const argv = parser('--foo=99 --bar=9987930', { string: ['bar'] }) console.log(argv) ``` ## ESM Example As of `v19` `yargs-parser` supports ESM (_both in Node.js and in the browser_): **Node.js:** ```js import parser from 'yargs-parser' const argv = parser('--foo=99 --bar=9987930', { string: ['bar'] }) console.log(argv) ``` **Browsers:** ```html <!doctype html> <body> <script type="module"> import parser from "https://unpkg.com/yargs-parser@19.0.0/browser.js"; const argv = parser('--foo=99 --bar=9987930', { string: ['bar'] }) console.log(argv) </script> </body> ``` ## API ### parser(args, opts={}) Parses command line arguments returning a simple mapping of keys and values. **expects:** * `args`: a string or array of strings representing the options to parse. * `opts`: provide a set of hints indicating how `args` should be parsed: * `opts.alias`: an object representing the set of aliases for a key: `{alias: {foo: ['f']}}`. * `opts.array`: indicate that keys should be parsed as an array: `{array: ['foo', 'bar']}`.<br> Indicate that keys should be parsed as an array and coerced to booleans / numbers:<br> `{array: [{ key: 'foo', boolean: true }, {key: 'bar', number: true}]}`. * `opts.boolean`: arguments should be parsed as booleans: `{boolean: ['x', 'y']}`. * `opts.coerce`: provide a custom synchronous function that returns a coerced value from the argument provided (or throws an error). For arrays the function is called only once for the entire array:<br> `{coerce: {foo: function (arg) {return modifiedArg}}}`. * `opts.config`: indicate a key that represents a path to a configuration file (this file will be loaded and parsed). * `opts.configObjects`: configuration objects to parse, their properties will be set as arguments:<br> `{configObjects: [{'x': 5, 'y': 33}, {'z': 44}]}`. * `opts.configuration`: provide configuration options to the yargs-parser (see: [configuration](#configuration)). * `opts.count`: indicate a key that should be used as a counter, e.g., `-vvv` = `{v: 3}`. * `opts.default`: provide default values for keys: `{default: {x: 33, y: 'hello world!'}}`. * `opts.envPrefix`: environment variables (`process.env`) with the prefix provided should be parsed. * `opts.narg`: specify that a key requires `n` arguments: `{narg: {x: 2}}`. * `opts.normalize`: `path.normalize()` will be applied to values set to this key. * `opts.number`: keys should be treated as numbers. * `opts.string`: keys should be treated as strings (even if they resemble a number `-x 33`). **returns:** * `obj`: an object representing the parsed value of `args` * `key/value`: key value pairs for each argument and their aliases. * `_`: an array representing the positional arguments. * [optional] `--`: an array with arguments after the end-of-options flag `--`. ### require('yargs-parser').detailed(args, opts={}) Parses a command line string, returning detailed information required by the yargs engine. **expects:** * `args`: a string or array of strings representing options to parse. * `opts`: provide a set of hints indicating how `args`, inputs are identical to `require('yargs-parser')(args, opts={})`. **returns:** * `argv`: an object representing the parsed value of `args` * `key/value`: key value pairs for each argument and their aliases. * `_`: an array representing the positional arguments. * [optional] `--`: an array with arguments after the end-of-options flag `--`. * `error`: populated with an error object if an exception occurred during parsing. * `aliases`: the inferred list of aliases built by combining lists in `opts.alias`. * `newAliases`: any new aliases added via camel-case expansion: * `boolean`: `{ fooBar: true }` * `defaulted`: any new argument created by `opts.default`, no aliases included. * `boolean`: `{ foo: true }` * `configuration`: given by default settings and `opts.configuration`. <a name="configuration"></a> ### Configuration The yargs-parser applies several automated transformations on the keys provided in `args`. These features can be turned on and off using the `configuration` field of `opts`. ```js var parsed = parser(['--no-dice'], { configuration: { 'boolean-negation': false } }) ``` ### short option groups * default: `true`. * key: `short-option-groups`. Should a group of short-options be treated as boolean flags? ```console $ node example.js -abc { _: [], a: true, b: true, c: true } ``` _if disabled:_ ```console $ node example.js -abc { _: [], abc: true } ``` ### camel-case expansion * default: `true`. * key: `camel-case-expansion`. Should hyphenated arguments be expanded into camel-case aliases? ```console $ node example.js --foo-bar { _: [], 'foo-bar': true, fooBar: true } ``` _if disabled:_ ```console $ node example.js --foo-bar { _: [], 'foo-bar': true } ``` ### dot-notation * default: `true` * key: `dot-notation` Should keys that contain `.` be treated as objects? ```console $ node example.js --foo.bar { _: [], foo: { bar: true } } ``` _if disabled:_ ```console $ node example.js --foo.bar { _: [], "foo.bar": true } ``` ### parse numbers * default: `true` * key: `parse-numbers` Should keys that look like numbers be treated as such? ```console $ node example.js --foo=99.3 { _: [], foo: 99.3 } ``` _if disabled:_ ```console $ node example.js --foo=99.3 { _: [], foo: "99.3" } ``` ### parse positional numbers * default: `true` * key: `parse-positional-numbers` Should positional keys that look like numbers be treated as such. ```console $ node example.js 99.3 { _: [99.3] } ``` _if disabled:_ ```console $ node example.js 99.3 { _: ['99.3'] } ``` ### boolean negation * default: `true` * key: `boolean-negation` Should variables prefixed with `--no` be treated as negations? ```console $ node example.js --no-foo { _: [], foo: false } ``` _if disabled:_ ```console $ node example.js --no-foo { _: [], "no-foo": true } ``` ### combine arrays * default: `false` * key: `combine-arrays` Should arrays be combined when provided by both command line arguments and a configuration file. ### duplicate arguments array * default: `true` * key: `duplicate-arguments-array` Should arguments be coerced into an array when duplicated: ```console $ node example.js -x 1 -x 2 { _: [], x: [1, 2] } ``` _if disabled:_ ```console $ node example.js -x 1 -x 2 { _: [], x: 2 } ``` ### flatten duplicate arrays * default: `true` * key: `flatten-duplicate-arrays` Should array arguments be coerced into a single array when duplicated: ```console $ node example.js -x 1 2 -x 3 4 { _: [], x: [1, 2, 3, 4] } ``` _if disabled:_ ```console $ node example.js -x 1 2 -x 3 4 { _: [], x: [[1, 2], [3, 4]] } ``` ### greedy arrays * default: `true` * key: `greedy-arrays` Should arrays consume more than one positional argument following their flag. ```console $ node example --arr 1 2 { _: [], arr: [1, 2] } ``` _if disabled:_ ```console $ node example --arr 1 2 { _: [2], arr: [1] } ``` **Note: in `v18.0.0` we are considering defaulting greedy arrays to `false`.** ### nargs eats options * default: `false` * key: `nargs-eats-options` Should nargs consume dash options as well as positional arguments. ### negation prefix * default: `no-` * key: `negation-prefix` The prefix to use for negated boolean variables. ```console $ node example.js --no-foo { _: [], foo: false } ``` _if set to `quux`:_ ```console $ node example.js --quuxfoo { _: [], foo: false } ``` ### populate -- * default: `false`. * key: `populate--` Should unparsed flags be stored in `--` or `_`. _If disabled:_ ```console $ node example.js a -b -- x y { _: [ 'a', 'x', 'y' ], b: true } ``` _If enabled:_ ```console $ node example.js a -b -- x y { _: [ 'a' ], '--': [ 'x', 'y' ], b: true } ``` ### set placeholder key * default: `false`. * key: `set-placeholder-key`. Should a placeholder be added for keys not set via the corresponding CLI argument? _If disabled:_ ```console $ node example.js -a 1 -c 2 { _: [], a: 1, c: 2 } ``` _If enabled:_ ```console $ node example.js -a 1 -c 2 { _: [], a: 1, b: undefined, c: 2 } ``` ### halt at non-option * default: `false`. * key: `halt-at-non-option`. Should parsing stop at the first positional argument? This is similar to how e.g. `ssh` parses its command line. _If disabled:_ ```console $ node example.js -a run b -x y { _: [ 'b' ], a: 'run', x: 'y' } ``` _If enabled:_ ```console $ node example.js -a run b -x y { _: [ 'b', '-x', 'y' ], a: 'run' } ``` ### strip aliased * default: `false` * key: `strip-aliased` Should aliases be removed before returning results? _If disabled:_ ```console $ node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1, 'test-alias': 1, testAlias: 1 } ``` _If enabled:_ ```console $ node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1 } ``` ### strip dashed * default: `false` * key: `strip-dashed` Should dashed keys be removed before returning results? This option has no effect if `camel-case-expansion` is disabled. _If disabled:_ ```console $ node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1 } ``` _If enabled:_ ```console $ node example.js --test-field 1 { _: [], testField: 1 } ``` ### unknown options as args * default: `false` * key: `unknown-options-as-args` Should unknown options be treated like regular arguments? An unknown option is one that is not configured in `opts`. _If disabled_ ```console $ node example.js --unknown-option --known-option 2 --string-option --unknown-option2 { _: [], unknownOption: true, knownOption: 2, stringOption: '', unknownOption2: true } ``` _If enabled_ ```console $ node example.js --unknown-option --known-option 2 --string-option --unknown-option2 { _: ['--unknown-option'], knownOption: 2, stringOption: '--unknown-option2' } ``` ## Supported Node.js Versions Libraries in this ecosystem make a best effort to track [Node.js' release schedule](https://nodejs.org/en/about/releases/). Here's [a post on why we think this is important](https://medium.com/the-node-js-collection/maintainers-should-consider-following-node-js-release-schedule-ab08ed4de71a). ## Special Thanks The yargs project evolves from optimist and minimist. It owes its existence to a lot of James Halliday's hard work. Thanks [substack](https://github.com/substack) **beep** **boop** \o/ ## License ISC # expand-template > Expand placeholders in a template string. [](https://www.npmjs.com/package/expand-template)  [](https://travis-ci.org/ralphtheninja/expand-template) [](https://standardjs.com) ## Install ``` $ npm i expand-template -S ``` ## Usage Default functionality expands templates using `{}` as separators for string placeholders. ```js var expand = require('expand-template')() var template = '{foo}/{foo}/{bar}/{bar}' console.log(expand(template, { foo: 'BAR', bar: 'FOO' })) // -> BAR/BAR/FOO/FOO ``` Custom separators: ```js var expand = require('expand-template')({ sep: '[]' }) var template = '[foo]/[foo]/[bar]/[bar]' console.log(expand(template, { foo: 'BAR', bar: 'FOO' })) // -> BAR/BAR/FOO/FOO ``` ## License All code, unless stated otherwise, is dual-licensed under [`WTFPL`](http://www.wtfpl.net/txt/copying/) and [`MIT`](https://opensource.org/licenses/MIT). # lodash.sortby v4.7.0 The [lodash](https://lodash.com/) method `_.sortBy` exported as a [Node.js](https://nodejs.org/) module. ## Installation Using npm: ```bash $ {sudo -H} npm i -g npm $ npm i --save lodash.sortby ``` In Node.js: ```js var sortBy = require('lodash.sortby'); ``` See the [documentation](https://lodash.com/docs#sortBy) or [package source](https://github.com/lodash/lodash/blob/4.7.0-npm-packages/lodash.sortby) for more details. semver(1) -- The semantic versioner for npm =========================================== ## Install ```bash npm install semver ```` ## Usage As a node module: ```js const semver = require('semver') semver.valid('1.2.3') // '1.2.3' semver.valid('a.b.c') // null semver.clean(' =v1.2.3 ') // '1.2.3' semver.satisfies('1.2.3', '1.x || >=2.5.0 || 5.0.0 - 7.2.3') // true semver.gt('1.2.3', '9.8.7') // false semver.lt('1.2.3', '9.8.7') // true semver.minVersion('>=1.0.0') // '1.0.0' semver.valid(semver.coerce('v2')) // '2.0.0' semver.valid(semver.coerce('42.6.7.9.3-alpha')) // '42.6.7' ``` You can also just load the module for the function that you care about, if you'd like to minimize your footprint. ```js // load the whole API at once in a single object const semver = require('semver') // or just load the bits you need // all of them listed here, just pick and choose what you want // classes const SemVer = require('semver/classes/semver') const Comparator = require('semver/classes/comparator') const Range = require('semver/classes/range') // functions for working with versions const semverParse = require('semver/functions/parse') const semverValid = require('semver/functions/valid') const semverClean = require('semver/functions/clean') const semverInc = require('semver/functions/inc') const semverDiff = require('semver/functions/diff') const semverMajor = require('semver/functions/major') const semverMinor = require('semver/functions/minor') const semverPatch = require('semver/functions/patch') const semverPrerelease = require('semver/functions/prerelease') const semverCompare = require('semver/functions/compare') const semverRcompare = require('semver/functions/rcompare') const semverCompareLoose = require('semver/functions/compare-loose') const semverCompareBuild = require('semver/functions/compare-build') const semverSort = require('semver/functions/sort') const semverRsort = require('semver/functions/rsort') // low-level comparators between versions const semverGt = require('semver/functions/gt') const semverLt = require('semver/functions/lt') const semverEq = require('semver/functions/eq') const semverNeq = require('semver/functions/neq') const semverGte = require('semver/functions/gte') const semverLte = require('semver/functions/lte') const semverCmp = require('semver/functions/cmp') const semverCoerce = require('semver/functions/coerce') // working with ranges const semverSatisfies = require('semver/functions/satisfies') const semverMaxSatisfying = require('semver/ranges/max-satisfying') const semverMinSatisfying = require('semver/ranges/min-satisfying') const semverToComparators = require('semver/ranges/to-comparators') const semverMinVersion = require('semver/ranges/min-version') const semverValidRange = require('semver/ranges/valid') const semverOutside = require('semver/ranges/outside') const semverGtr = require('semver/ranges/gtr') const semverLtr = require('semver/ranges/ltr') const semverIntersects = require('semver/ranges/intersects') const simplifyRange = require('semver/ranges/simplify') const rangeSubset = require('semver/ranges/subset') ``` As a command-line utility: ``` $ semver -h A JavaScript implementation of the https://semver.org/ specification Copyright Isaac Z. Schlueter Usage: semver [options] <version> [<version> [...]] Prints valid versions sorted by SemVer precedence Options: -r --range <range> Print versions that match the specified range. -i --increment [<level>] Increment a version by the specified level. Level can be one of: major, minor, patch, premajor, preminor, prepatch, or prerelease. Default level is 'patch'. Only one version may be specified. --preid <identifier> Identifier to be used to prefix premajor, preminor, prepatch or prerelease version increments. -l --loose Interpret versions and ranges loosely -p --include-prerelease Always include prerelease versions in range matching -c --coerce Coerce a string into SemVer if possible (does not imply --loose) --rtl Coerce version strings right to left --ltr Coerce version strings left to right (default) Program exits successfully if any valid version satisfies all supplied ranges, and prints all satisfying versions. If no satisfying versions are found, then exits failure. Versions are printed in ascending order, so supplying multiple versions to the utility will just sort them. ``` ## Versions A "version" is described by the `v2.0.0` specification found at <https://semver.org/>. A leading `"="` or `"v"` character is stripped off and ignored. ## Ranges A `version range` is a set of `comparators` which specify versions that satisfy the range. A `comparator` is composed of an `operator` and a `version`. The set of primitive `operators` is: * `<` Less than * `<=` Less than or equal to * `>` Greater than * `>=` Greater than or equal to * `=` Equal. If no operator is specified, then equality is assumed, so this operator is optional, but MAY be included. For example, the comparator `>=1.2.7` would match the versions `1.2.7`, `1.2.8`, `2.5.3`, and `1.3.9`, but not the versions `1.2.6` or `1.1.0`. Comparators can be joined by whitespace to form a `comparator set`, which is satisfied by the **intersection** of all of the comparators it includes. A range is composed of one or more comparator sets, joined by `||`. A version matches a range if and only if every comparator in at least one of the `||`-separated comparator sets is satisfied by the version. For example, the range `>=1.2.7 <1.3.0` would match the versions `1.2.7`, `1.2.8`, and `1.2.99`, but not the versions `1.2.6`, `1.3.0`, or `1.1.0`. The range `1.2.7 || >=1.2.9 <2.0.0` would match the versions `1.2.7`, `1.2.9`, and `1.4.6`, but not the versions `1.2.8` or `2.0.0`. ### Prerelease Tags If a version has a prerelease tag (for example, `1.2.3-alpha.3`) then it will only be allowed to satisfy comparator sets if at least one comparator with the same `[major, minor, patch]` tuple also has a prerelease tag. For example, the range `>1.2.3-alpha.3` would be allowed to match the version `1.2.3-alpha.7`, but it would *not* be satisfied by `3.4.5-alpha.9`, even though `3.4.5-alpha.9` is technically "greater than" `1.2.3-alpha.3` according to the SemVer sort rules. The version range only accepts prerelease tags on the `1.2.3` version. The version `3.4.5` *would* satisfy the range, because it does not have a prerelease flag, and `3.4.5` is greater than `1.2.3-alpha.7`. The purpose for this behavior is twofold. First, prerelease versions frequently are updated very quickly, and contain many breaking changes that are (by the author's design) not yet fit for public consumption. Therefore, by default, they are excluded from range matching semantics. Second, a user who has opted into using a prerelease version has clearly indicated the intent to use *that specific* set of alpha/beta/rc versions. By including a prerelease tag in the range, the user is indicating that they are aware of the risk. However, it is still not appropriate to assume that they have opted into taking a similar risk on the *next* set of prerelease versions. Note that this behavior can be suppressed (treating all prerelease versions as if they were normal versions, for the purpose of range matching) by setting the `includePrerelease` flag on the options object to any [functions](https://github.com/npm/node-semver#functions) that do range matching. #### Prerelease Identifiers The method `.inc` takes an additional `identifier` string argument that will append the value of the string as a prerelease identifier: ```javascript semver.inc('1.2.3', 'prerelease', 'beta') // '1.2.4-beta.0' ``` command-line example: ```bash $ semver 1.2.3 -i prerelease --preid beta 1.2.4-beta.0 ``` Which then can be used to increment further: ```bash $ semver 1.2.4-beta.0 -i prerelease 1.2.4-beta.1 ``` ### Advanced Range Syntax Advanced range syntax desugars to primitive comparators in deterministic ways. Advanced ranges may be combined in the same way as primitive comparators using white space or `||`. #### Hyphen Ranges `X.Y.Z - A.B.C` Specifies an inclusive set. * `1.2.3 - 2.3.4` := `>=1.2.3 <=2.3.4` If a partial version is provided as the first version in the inclusive range, then the missing pieces are replaced with zeroes. * `1.2 - 2.3.4` := `>=1.2.0 <=2.3.4` If a partial version is provided as the second version in the inclusive range, then all versions that start with the supplied parts of the tuple are accepted, but nothing that would be greater than the provided tuple parts. * `1.2.3 - 2.3` := `>=1.2.3 <2.4.0-0` * `1.2.3 - 2` := `>=1.2.3 <3.0.0-0` #### X-Ranges `1.2.x` `1.X` `1.2.*` `*` Any of `X`, `x`, or `*` may be used to "stand in" for one of the numeric values in the `[major, minor, patch]` tuple. * `*` := `>=0.0.0` (Any version satisfies) * `1.x` := `>=1.0.0 <2.0.0-0` (Matching major version) * `1.2.x` := `>=1.2.0 <1.3.0-0` (Matching major and minor versions) A partial version range is treated as an X-Range, so the special character is in fact optional. * `""` (empty string) := `*` := `>=0.0.0` * `1` := `1.x.x` := `>=1.0.0 <2.0.0-0` * `1.2` := `1.2.x` := `>=1.2.0 <1.3.0-0` #### Tilde Ranges `~1.2.3` `~1.2` `~1` Allows patch-level changes if a minor version is specified on the comparator. Allows minor-level changes if not. * `~1.2.3` := `>=1.2.3 <1.(2+1).0` := `>=1.2.3 <1.3.0-0` * `~1.2` := `>=1.2.0 <1.(2+1).0` := `>=1.2.0 <1.3.0-0` (Same as `1.2.x`) * `~1` := `>=1.0.0 <(1+1).0.0` := `>=1.0.0 <2.0.0-0` (Same as `1.x`) * `~0.2.3` := `>=0.2.3 <0.(2+1).0` := `>=0.2.3 <0.3.0-0` * `~0.2` := `>=0.2.0 <0.(2+1).0` := `>=0.2.0 <0.3.0-0` (Same as `0.2.x`) * `~0` := `>=0.0.0 <(0+1).0.0` := `>=0.0.0 <1.0.0-0` (Same as `0.x`) * `~1.2.3-beta.2` := `>=1.2.3-beta.2 <1.3.0-0` Note that prereleases in the `1.2.3` version will be allowed, if they are greater than or equal to `beta.2`. So, `1.2.3-beta.4` would be allowed, but `1.2.4-beta.2` would not, because it is a prerelease of a different `[major, minor, patch]` tuple. #### Caret Ranges `^1.2.3` `^0.2.5` `^0.0.4` Allows changes that do not modify the left-most non-zero element in the `[major, minor, patch]` tuple. In other words, this allows patch and minor updates for versions `1.0.0` and above, patch updates for versions `0.X >=0.1.0`, and *no* updates for versions `0.0.X`. Many authors treat a `0.x` version as if the `x` were the major "breaking-change" indicator. Caret ranges are ideal when an author may make breaking changes between `0.2.4` and `0.3.0` releases, which is a common practice. However, it presumes that there will *not* be breaking changes between `0.2.4` and `0.2.5`. It allows for changes that are presumed to be additive (but non-breaking), according to commonly observed practices. * `^1.2.3` := `>=1.2.3 <2.0.0-0` * `^0.2.3` := `>=0.2.3 <0.3.0-0` * `^0.0.3` := `>=0.0.3 <0.0.4-0` * `^1.2.3-beta.2` := `>=1.2.3-beta.2 <2.0.0-0` Note that prereleases in the `1.2.3` version will be allowed, if they are greater than or equal to `beta.2`. So, `1.2.3-beta.4` would be allowed, but `1.2.4-beta.2` would not, because it is a prerelease of a different `[major, minor, patch]` tuple. * `^0.0.3-beta` := `>=0.0.3-beta <0.0.4-0` Note that prereleases in the `0.0.3` version *only* will be allowed, if they are greater than or equal to `beta`. So, `0.0.3-pr.2` would be allowed. When parsing caret ranges, a missing `patch` value desugars to the number `0`, but will allow flexibility within that value, even if the major and minor versions are both `0`. * `^1.2.x` := `>=1.2.0 <2.0.0-0` * `^0.0.x` := `>=0.0.0 <0.1.0-0` * `^0.0` := `>=0.0.0 <0.1.0-0` A missing `minor` and `patch` values will desugar to zero, but also allow flexibility within those values, even if the major version is zero. * `^1.x` := `>=1.0.0 <2.0.0-0` * `^0.x` := `>=0.0.0 <1.0.0-0` ### Range Grammar Putting all this together, here is a Backus-Naur grammar for ranges, for the benefit of parser authors: ```bnf range-set ::= range ( logical-or range ) * logical-or ::= ( ' ' ) * '||' ( ' ' ) * range ::= hyphen | simple ( ' ' simple ) * | '' hyphen ::= partial ' - ' partial simple ::= primitive | partial | tilde | caret primitive ::= ( '<' | '>' | '>=' | '<=' | '=' ) partial partial ::= xr ( '.' xr ( '.' xr qualifier ? )? )? xr ::= 'x' | 'X' | '*' | nr nr ::= '0' | ['1'-'9'] ( ['0'-'9'] ) * tilde ::= '~' partial caret ::= '^' partial qualifier ::= ( '-' pre )? ( '+' build )? pre ::= parts build ::= parts parts ::= part ( '.' part ) * part ::= nr | [-0-9A-Za-z]+ ``` ## Functions All methods and classes take a final `options` object argument. All options in this object are `false` by default. The options supported are: - `loose` Be more forgiving about not-quite-valid semver strings. (Any resulting output will always be 100% strict compliant, of course.) For backwards compatibility reasons, if the `options` argument is a boolean value instead of an object, it is interpreted to be the `loose` param. - `includePrerelease` Set to suppress the [default behavior](https://github.com/npm/node-semver#prerelease-tags) of excluding prerelease tagged versions from ranges unless they are explicitly opted into. Strict-mode Comparators and Ranges will be strict about the SemVer strings that they parse. * `valid(v)`: Return the parsed version, or null if it's not valid. * `inc(v, release)`: Return the version incremented by the release type (`major`, `premajor`, `minor`, `preminor`, `patch`, `prepatch`, or `prerelease`), or null if it's not valid * `premajor` in one call will bump the version up to the next major version and down to a prerelease of that major version. `preminor`, and `prepatch` work the same way. * If called from a non-prerelease version, the `prerelease` will work the same as `prepatch`. It increments the patch version, then makes a prerelease. If the input version is already a prerelease it simply increments it. * `prerelease(v)`: Returns an array of prerelease components, or null if none exist. Example: `prerelease('1.2.3-alpha.1') -> ['alpha', 1]` * `major(v)`: Return the major version number. * `minor(v)`: Return the minor version number. * `patch(v)`: Return the patch version number. * `intersects(r1, r2, loose)`: Return true if the two supplied ranges or comparators intersect. * `parse(v)`: Attempt to parse a string as a semantic version, returning either a `SemVer` object or `null`. ### Comparison * `gt(v1, v2)`: `v1 > v2` * `gte(v1, v2)`: `v1 >= v2` * `lt(v1, v2)`: `v1 < v2` * `lte(v1, v2)`: `v1 <= v2` * `eq(v1, v2)`: `v1 == v2` This is true if they're logically equivalent, even if they're not the exact same string. You already know how to compare strings. * `neq(v1, v2)`: `v1 != v2` The opposite of `eq`. * `cmp(v1, comparator, v2)`: Pass in a comparison string, and it'll call the corresponding function above. `"==="` and `"!=="` do simple string comparison, but are included for completeness. Throws if an invalid comparison string is provided. * `compare(v1, v2)`: Return `0` if `v1 == v2`, or `1` if `v1` is greater, or `-1` if `v2` is greater. Sorts in ascending order if passed to `Array.sort()`. * `rcompare(v1, v2)`: The reverse of compare. Sorts an array of versions in descending order when passed to `Array.sort()`. * `compareBuild(v1, v2)`: The same as `compare` but considers `build` when two versions are equal. Sorts in ascending order if passed to `Array.sort()`. `v2` is greater. Sorts in ascending order if passed to `Array.sort()`. * `diff(v1, v2)`: Returns difference between two versions by the release type (`major`, `premajor`, `minor`, `preminor`, `patch`, `prepatch`, or `prerelease`), or null if the versions are the same. ### Comparators * `intersects(comparator)`: Return true if the comparators intersect ### Ranges * `validRange(range)`: Return the valid range or null if it's not valid * `satisfies(version, range)`: Return true if the version satisfies the range. * `maxSatisfying(versions, range)`: Return the highest version in the list that satisfies the range, or `null` if none of them do. * `minSatisfying(versions, range)`: Return the lowest version in the list that satisfies the range, or `null` if none of them do. * `minVersion(range)`: Return the lowest version that can possibly match the given range. * `gtr(version, range)`: Return `true` if version is greater than all the versions possible in the range. * `ltr(version, range)`: Return `true` if version is less than all the versions possible in the range. * `outside(version, range, hilo)`: Return true if the version is outside the bounds of the range in either the high or low direction. The `hilo` argument must be either the string `'>'` or `'<'`. (This is the function called by `gtr` and `ltr`.) * `intersects(range)`: Return true if any of the ranges comparators intersect * `simplifyRange(versions, range)`: Return a "simplified" range that matches the same items in `versions` list as the range specified. Note that it does *not* guarantee that it would match the same versions in all cases, only for the set of versions provided. This is useful when generating ranges by joining together multiple versions with `||` programmatically, to provide the user with something a bit more ergonomic. If the provided range is shorter in string-length than the generated range, then that is returned. * `subset(subRange, superRange)`: Return `true` if the `subRange` range is entirely contained by the `superRange` range. Note that, since ranges may be non-contiguous, a version might not be greater than a range, less than a range, *or* satisfy a range! For example, the range `1.2 <1.2.9 || >2.0.0` would have a hole from `1.2.9` until `2.0.0`, so the version `1.2.10` would not be greater than the range (because `2.0.1` satisfies, which is higher), nor less than the range (since `1.2.8` satisfies, which is lower), and it also does not satisfy the range. If you want to know if a version satisfies or does not satisfy a range, use the `satisfies(version, range)` function. ### Coercion * `coerce(version, options)`: Coerces a string to semver if possible This aims to provide a very forgiving translation of a non-semver string to semver. It looks for the first digit in a string, and consumes all remaining characters which satisfy at least a partial semver (e.g., `1`, `1.2`, `1.2.3`) up to the max permitted length (256 characters). Longer versions are simply truncated (`4.6.3.9.2-alpha2` becomes `4.6.3`). All surrounding text is simply ignored (`v3.4 replaces v3.3.1` becomes `3.4.0`). Only text which lacks digits will fail coercion (`version one` is not valid). The maximum length for any semver component considered for coercion is 16 characters; longer components will be ignored (`10000000000000000.4.7.4` becomes `4.7.4`). The maximum value for any semver component is `Number.MAX_SAFE_INTEGER || (2**53 - 1)`; higher value components are invalid (`9999999999999999.4.7.4` is likely invalid). If the `options.rtl` flag is set, then `coerce` will return the right-most coercible tuple that does not share an ending index with a longer coercible tuple. For example, `1.2.3.4` will return `2.3.4` in rtl mode, not `4.0.0`. `1.2.3/4` will return `4.0.0`, because the `4` is not a part of any other overlapping SemVer tuple. ### Clean * `clean(version)`: Clean a string to be a valid semver if possible This will return a cleaned and trimmed semver version. If the provided version is not valid a null will be returned. This does not work for ranges. ex. * `s.clean(' = v 2.1.5foo')`: `null` * `s.clean(' = v 2.1.5foo', { loose: true })`: `'2.1.5-foo'` * `s.clean(' = v 2.1.5-foo')`: `null` * `s.clean(' = v 2.1.5-foo', { loose: true })`: `'2.1.5-foo'` * `s.clean('=v2.1.5')`: `'2.1.5'` * `s.clean(' =v2.1.5')`: `2.1.5` * `s.clean(' 2.1.5 ')`: `'2.1.5'` * `s.clean('~1.0.0')`: `null` ## Exported Modules <!-- TODO: Make sure that all of these items are documented (classes aren't, eg), and then pull the module name into the documentation for that specific thing. --> You may pull in just the part of this semver utility that you need, if you are sensitive to packing and tree-shaking concerns. The main `require('semver')` export uses getter functions to lazily load the parts of the API that are used. The following modules are available: * `require('semver')` * `require('semver/classes')` * `require('semver/classes/comparator')` * `require('semver/classes/range')` * `require('semver/classes/semver')` * `require('semver/functions/clean')` * `require('semver/functions/cmp')` * `require('semver/functions/coerce')` * `require('semver/functions/compare')` * `require('semver/functions/compare-build')` * `require('semver/functions/compare-loose')` * `require('semver/functions/diff')` * `require('semver/functions/eq')` * `require('semver/functions/gt')` * `require('semver/functions/gte')` * `require('semver/functions/inc')` * `require('semver/functions/lt')` * `require('semver/functions/lte')` * `require('semver/functions/major')` * `require('semver/functions/minor')` * `require('semver/functions/neq')` * `require('semver/functions/parse')` * `require('semver/functions/patch')` * `require('semver/functions/prerelease')` * `require('semver/functions/rcompare')` * `require('semver/functions/rsort')` * `require('semver/functions/satisfies')` * `require('semver/functions/sort')` * `require('semver/functions/valid')` * `require('semver/ranges/gtr')` * `require('semver/ranges/intersects')` * `require('semver/ranges/ltr')` * `require('semver/ranges/max-satisfying')` * `require('semver/ranges/min-satisfying')` * `require('semver/ranges/min-version')` * `require('semver/ranges/outside')` * `require('semver/ranges/to-comparators')` * `require('semver/ranges/valid')` # <img src="docs_app/assets/Rx_Logo_S.png" alt="RxJS Logo" width="86" height="86"> RxJS: Reactive Extensions For JavaScript [](https://circleci.com/gh/ReactiveX/rxjs/tree/6.x) [](http://badge.fury.io/js/%40reactivex%2Frxjs) [](https://gitter.im/Reactive-Extensions/RxJS?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) # RxJS 6 Stable ### MIGRATION AND RELEASE INFORMATION: Find out how to update to v6, **automatically update your TypeScript code**, and more! - [Current home is MIGRATION.md](./docs_app/content/guide/v6/migration.md) ### FOR V 5.X PLEASE GO TO [THE 5.0 BRANCH](https://github.com/ReactiveX/rxjs/tree/5.x) Reactive Extensions Library for JavaScript. This is a rewrite of [Reactive-Extensions/RxJS](https://github.com/Reactive-Extensions/RxJS) and is the latest production-ready version of RxJS. This rewrite is meant to have better performance, better modularity, better debuggable call stacks, while staying mostly backwards compatible, with some breaking changes that reduce the API surface. [Apache 2.0 License](LICENSE.txt) - [Code of Conduct](CODE_OF_CONDUCT.md) - [Contribution Guidelines](CONTRIBUTING.md) - [Maintainer Guidelines](doc_app/content/maintainer-guidelines.md) - [API Documentation](https://rxjs.dev/) ## Versions In This Repository - [master](https://github.com/ReactiveX/rxjs/commits/master) - This is all of the current, unreleased work, which is against v6 of RxJS right now - [stable](https://github.com/ReactiveX/rxjs/commits/stable) - This is the branch for the latest version you'd get if you do `npm install rxjs` ## Important By contributing or commenting on issues in this repository, whether you've read them or not, you're agreeing to the [Contributor Code of Conduct](CODE_OF_CONDUCT.md). Much like traffic laws, ignorance doesn't grant you immunity. ## Installation and Usage ### ES6 via npm ```sh npm install rxjs ``` It's recommended to pull in the Observable creation methods you need directly from `'rxjs'` as shown below with `range`. And you can pull in any operator you need from one spot, under `'rxjs/operators'`. ```ts import { range } from "rxjs"; import { map, filter } from "rxjs/operators"; range(1, 200) .pipe( filter(x => x % 2 === 1), map(x => x + x) ) .subscribe(x => console.log(x)); ``` Here, we're using the built-in `pipe` method on Observables to combine operators. See [pipeable operators](https://github.com/ReactiveX/rxjs/blob/master/doc/pipeable-operators.md) for more information. ### CommonJS via npm To install this library for CommonJS (CJS) usage, use the following command: ```sh npm install rxjs ``` (Note: destructuring available in Node 8+) ```js const { range } = require('rxjs'); const { map, filter } = require('rxjs/operators'); range(1, 200).pipe( filter(x => x % 2 === 1), map(x => x + x) ).subscribe(x => console.log(x)); ``` ### CDN For CDN, you can use [unpkg](https://unpkg.com/): https://unpkg.com/rxjs/bundles/rxjs.umd.min.js The global namespace for rxjs is `rxjs`: ```js const { range } = rxjs; const { map, filter } = rxjs.operators; range(1, 200) .pipe( filter(x => x % 2 === 1), map(x => x + x) ) .subscribe(x => console.log(x)); ``` ## Goals - Smaller overall bundles sizes - Provide better performance than preceding versions of RxJS - To model/follow the [Observable Spec Proposal](https://github.com/zenparsing/es-observable) to the observable - Provide more modular file structure in a variety of formats - Provide more debuggable call stacks than preceding versions of RxJS ## Building/Testing - `npm run build_all` - builds everything - `npm test` - runs tests - `npm run test_no_cache` - run test with `ts-node` set to false ## Performance Tests Run `npm run build_perf` or `npm run perf` to run the performance tests with `protractor`. Run `npm run perf_micro [operator]` to run micro performance test benchmarking operator. ## Adding documentation We appreciate all contributions to the documentation of any type. All of the information needed to get the docs app up and running locally as well as how to contribute can be found in the [documentation directory](./docs_app). ## Generating PNG marble diagrams The script `npm run tests2png` requires some native packages installed locally: `imagemagick`, `graphicsmagick`, and `ghostscript`. For Mac OS X with [Homebrew](http://brew.sh/): - `brew install imagemagick` - `brew install graphicsmagick` - `brew install ghostscript` - You may need to install the Ghostscript fonts manually: - Download the tarball from the [gs-fonts project](https://sourceforge.net/projects/gs-fonts) - `mkdir -p /usr/local/share/ghostscript && tar zxvf /path/to/ghostscript-fonts.tar.gz -C /usr/local/share/ghostscript` For Debian Linux: - `sudo add-apt-repository ppa:dhor/myway` - `apt-get install imagemagick` - `apt-get install graphicsmagick` - `apt-get install ghostscript` For Windows and other Operating Systems, check the download instructions here: - http://imagemagick.org - http://www.graphicsmagick.org - http://www.ghostscript.com/ randombytes === [](https://www.npmjs.org/package/randombytes) [](https://travis-ci.org/crypto-browserify/randombytes) randombytes from node that works in the browser. In node you just get crypto.randomBytes, but in the browser it uses .crypto/msCrypto.getRandomValues ```js var randomBytes = require('randombytes'); randomBytes(16);//get 16 random bytes randomBytes(16, function (err, resp) { // resp is 16 random bytes }); ``` # wrappy Callback wrapping utility ## USAGE ```javascript var wrappy = require("wrappy") // var wrapper = wrappy(wrapperFunction) // make sure a cb is called only once // See also: http://npm.im/once for this specific use case var once = wrappy(function (cb) { var called = false return function () { if (called) return called = true return cb.apply(this, arguments) } }) function printBoo () { console.log('boo') } // has some rando property printBoo.iAmBooPrinter = true var onlyPrintOnce = once(printBoo) onlyPrintOnce() // prints 'boo' onlyPrintOnce() // does nothing // random property is retained! assert.equal(onlyPrintOnce.iAmBooPrinter, true) ``` # hash-base [](https://www.npmjs.org/package/hash-base) [](https://travis-ci.org/crypto-browserify/hash-base) [](https://david-dm.org/crypto-browserify/hash-base#info=dependencies) [](https://github.com/feross/standard) Abstract base class to inherit from if you want to create streams implementing the same API as node crypto [Hash][1] (for [Cipher][2] / [Decipher][3] check [crypto-browserify/cipher-base][4]). ## Example ```js const HashBase = require('hash-base') const inherits = require('inherits') // our hash function is XOR sum of all bytes function MyHash () { HashBase.call(this, 1) // in bytes this._sum = 0x00 } inherits(MyHash, HashBase) MyHash.prototype._update = function () { for (let i = 0; i < this._block.length; ++i) this._sum ^= this._block[i] } MyHash.prototype._digest = function () { return this._sum } const data = Buffer.from([ 0x00, 0x42, 0x01 ]) const hash = new MyHash().update(data).digest() console.log(hash) // => 67 ``` You also can check [source code](index.js) or [crypto-browserify/md5.js][5] ## LICENSE MIT [1]: https://nodejs.org/api/crypto.html#crypto_class_hash [2]: https://nodejs.org/api/crypto.html#crypto_class_cipher [3]: https://nodejs.org/api/crypto.html#crypto_class_decipher [4]: https://github.com/crypto-browserify/cipher-base [5]: https://github.com/crypto-browserify/md5.js The AssemblyScript Runtime ========================== The runtime provides the functionality necessary to dynamically allocate and deallocate memory of objects, arrays and buffers, as well as collect garbage that is no longer used. The current implementation is either a Two-Color Mark & Sweep (TCMS) garbage collector that must be called manually when the execution stack is unwound or an Incremental Tri-Color Mark & Sweep (ITCMS) garbage collector that is fully automated with a shadow stack, implemented on top of a Two-Level Segregate Fit (TLSF) memory manager. It's not designed to be the fastest of its kind, but intentionally focuses on simplicity and ease of integration until we can replace it with the real deal, i.e. Wasm GC. Interface --------- ### Garbage collector / `--exportRuntime` * **__new**(size: `usize`, id: `u32` = 0): `usize`<br /> Dynamically allocates a GC object of at least the specified size and returns its address. Alignment is guaranteed to be 16 bytes to fit up to v128 values naturally. GC-allocated objects cannot be used with `__realloc` and `__free`. * **__pin**(ptr: `usize`): `usize`<br /> Pins the object pointed to by `ptr` externally so it and its directly reachable members and indirectly reachable objects do not become garbage collected. * **__unpin**(ptr: `usize`): `void`<br /> Unpins the object pointed to by `ptr` externally so it can become garbage collected. * **__collect**(): `void`<br /> Performs a full garbage collection. ### Internals * **__alloc**(size: `usize`): `usize`<br /> Dynamically allocates a chunk of memory of at least the specified size and returns its address. Alignment is guaranteed to be 16 bytes to fit up to v128 values naturally. * **__realloc**(ptr: `usize`, size: `usize`): `usize`<br /> Dynamically changes the size of a chunk of memory, possibly moving it to a new address. * **__free**(ptr: `usize`): `void`<br /> Frees a dynamically allocated chunk of memory by its address. * **__renew**(ptr: `usize`, size: `usize`): `usize`<br /> Like `__realloc`, but for `__new`ed GC objects. * **__link**(parentPtr: `usize`, childPtr: `usize`, expectMultiple: `bool`): `void`<br /> Introduces a link from a parent object to a child object, i.e. upon `parent.field = child`. * **__visit**(ptr: `usize`, cookie: `u32`): `void`<br /> Concrete visitor implementation called during traversal. Cookie can be used to indicate one of multiple operations. * **__visit_globals**(cookie: `u32`): `void`<br /> Calls `__visit` on each global that is of a managed type. * **__visit_members**(ptr: `usize`, cookie: `u32`): `void`<br /> Calls `__visit` on each member of the object pointed to by `ptr`. * **__typeinfo**(id: `u32`): `RTTIFlags`<br /> Obtains the runtime type information for objects with the specified runtime id. Runtime type information is a set of flags indicating whether a type is managed, an array or similar, and what the relevant alignments when creating an instance externally are etc. * **__instanceof**(ptr: `usize`, classId: `u32`): `bool`<br /> Tests if the object pointed to by `ptr` is an instance of the specified class id. ITCMS / `--runtime incremental` ----- The Incremental Tri-Color Mark & Sweep garbage collector maintains a separate shadow stack of managed values in the background to achieve full automation. Maintaining another stack introduces some overhead compared to the simpler Two-Color Mark & Sweep garbage collector, but makes it independent of whether the execution stack is unwound or not when it is invoked, so the garbage collector can run interleaved with the program. There are several constants one can experiment with to tweak ITCMS's automation: * `--use ASC_GC_GRANULARITY=1024`<br /> How often to interrupt. The default of 1024 means "interrupt each 1024 bytes allocated". * `--use ASC_GC_STEPFACTOR=200`<br /> How long to interrupt. The default of 200% means "run at double the speed of allocations". * `--use ASC_GC_IDLEFACTOR=200`<br /> How long to idle. The default of 200% means "wait for memory to double before kicking in again". * `--use ASC_GC_MARKCOST=1`<br /> How costly it is to mark one object. Budget per interrupt is `GRANULARITY * STEPFACTOR / 100`. * `--use ASC_GC_SWEEPCOST=10`<br /> How costly it is to sweep one object. Budget per interrupt is `GRANULARITY * STEPFACTOR / 100`. TCMS / `--runtime minimal` ---- If automation and low pause times aren't strictly necessary, using the Two-Color Mark & Sweep garbage collector instead by invoking collection manually at appropriate times when the execution stack is unwound may be more performant as it simpler and has less overhead. The execution stack is typically unwound when invoking the collector externally, at a place that is not indirectly called from Wasm. STUB / `--runtime stub` ---- The stub is a maximally minimal runtime substitute, consisting of a simple and fast bump allocator with no means of freeing up memory again, except when freeing the respective most recently allocated object on top of the bump. Useful where memory is not a concern, and/or where it is sufficient to destroy the whole module including any potential garbage after execution. See also: [Garbage collection](https://www.assemblyscript.org/garbage-collection.html) # type-check [](https://travis-ci.org/gkz/type-check) <a name="type-check" /> `type-check` is a library which allows you to check the types of JavaScript values at runtime with a Haskell like type syntax. It is great for checking external input, for testing, or even for adding a bit of safety to your internal code. It is a major component of [levn](https://github.com/gkz/levn). MIT license. Version 0.4.0. Check out the [demo](http://gkz.github.io/type-check/). For updates on `type-check`, [follow me on twitter](https://twitter.com/gkzahariev). npm install type-check ## Quick Examples ```js // Basic types: var typeCheck = require('type-check').typeCheck; typeCheck('Number', 1); // true typeCheck('Number', 'str'); // false typeCheck('Error', new Error); // true typeCheck('Undefined', undefined); // true // Comment typeCheck('count::Number', 1); // true // One type OR another type: typeCheck('Number | String', 2); // true typeCheck('Number | String', 'str'); // true // Wildcard, matches all types: typeCheck('*', 2) // true // Array, all elements of a single type: typeCheck('[Number]', [1, 2, 3]); // true typeCheck('[Number]', [1, 'str', 3]); // false // Tuples, or fixed length arrays with elements of different types: typeCheck('(String, Number)', ['str', 2]); // true typeCheck('(String, Number)', ['str']); // false typeCheck('(String, Number)', ['str', 2, 5]); // false // Object properties: typeCheck('{x: Number, y: Boolean}', {x: 2, y: false}); // true typeCheck('{x: Number, y: Boolean}', {x: 2}); // false typeCheck('{x: Number, y: Maybe Boolean}', {x: 2}); // true typeCheck('{x: Number, y: Boolean}', {x: 2, y: false, z: 3}); // false typeCheck('{x: Number, y: Boolean, ...}', {x: 2, y: false, z: 3}); // true // A particular type AND object properties: typeCheck('RegExp{source: String, ...}', /re/i); // true typeCheck('RegExp{source: String, ...}', {source: 're'}); // false // Custom types: var opt = {customTypes: {Even: { typeOf: 'Number', validate: function(x) { return x % 2 === 0; }}}}; typeCheck('Even', 2, opt); // true // Nested: var type = '{a: (String, [Number], {y: Array, ...}), b: Error{message: String, ...}}' typeCheck(type, {a: ['hi', [1, 2, 3], {y: [1, 'ms']}], b: new Error('oh no')}); // true ``` Check out the [type syntax format](#syntax) and [guide](#guide). ## Usage `require('type-check');` returns an object that exposes four properties. `VERSION` is the current version of the library as a string. `typeCheck`, `parseType`, and `parsedTypeCheck` are functions. ```js // typeCheck(type, input, options); typeCheck('Number', 2); // true // parseType(type); var parsedType = parseType('Number'); // object // parsedTypeCheck(parsedType, input, options); parsedTypeCheck(parsedType, 2); // true ``` ### typeCheck(type, input, options) `typeCheck` checks a JavaScript value `input` against `type` written in the [type format](#type-format) (and taking account the optional `options`) and returns whether the `input` matches the `type`. ##### arguments * type - `String` - the type written in the [type format](#type-format) which to check against * input - `*` - any JavaScript value, which is to be checked against the type * options - `Maybe Object` - an optional parameter specifying additional options, currently the only available option is specifying [custom types](#custom-types) ##### returns `Boolean` - whether the input matches the type ##### example ```js typeCheck('Number', 2); // true ``` ### parseType(type) `parseType` parses string `type` written in the [type format](#type-format) into an object representing the parsed type. ##### arguments * type - `String` - the type written in the [type format](#type-format) which to parse ##### returns `Object` - an object in the parsed type format representing the parsed type ##### example ```js parseType('Number'); // [{type: 'Number'}] ``` ### parsedTypeCheck(parsedType, input, options) `parsedTypeCheck` checks a JavaScript value `input` against parsed `type` in the parsed type format (and taking account the optional `options`) and returns whether the `input` matches the `type`. Use this in conjunction with `parseType` if you are going to use a type more than once. ##### arguments * type - `Object` - the type in the parsed type format which to check against * input - `*` - any JavaScript value, which is to be checked against the type * options - `Maybe Object` - an optional parameter specifying additional options, currently the only available option is specifying [custom types](#custom-types) ##### returns `Boolean` - whether the input matches the type ##### example ```js parsedTypeCheck([{type: 'Number'}], 2); // true var parsedType = parseType('String'); parsedTypeCheck(parsedType, 'str'); // true ``` <a name="type-format" /> ## Type Format ### Syntax White space is ignored. The root node is a __Types__. * __Identifier__ = `[\$\w]+` - a group of any lower or upper case letters, numbers, underscores, or dollar signs - eg. `String` * __Type__ = an `Identifier`, an `Identifier` followed by a `Structure`, just a `Structure`, or a wildcard `*` - eg. `String`, `Object{x: Number}`, `{x: Number}`, `Array{0: String, 1: Boolean, length: Number}`, `*` * __Types__ = optionally a comment (an `Identifier` followed by a `::`), optionally the identifier `Maybe`, one or more `Type`, separated by `|` - eg. `Number`, `String | Date`, `Maybe Number`, `Maybe Boolean | String` * __Structure__ = `Fields`, or a `Tuple`, or an `Array` - eg. `{x: Number}`, `(String, Number)`, `[Date]` * __Fields__ = a `{`, followed one or more `Field` separated by a comma `,` (trailing comma `,` is permitted), optionally an `...` (always preceded by a comma `,`), followed by a `}` - eg. `{x: Number, y: String}`, `{k: Function, ...}` * __Field__ = an `Identifier`, followed by a colon `:`, followed by `Types` - eg. `x: Date | String`, `y: Boolean` * __Tuple__ = a `(`, followed by one or more `Types` separated by a comma `,` (trailing comma `,` is permitted), followed by a `)` - eg `(Date)`, `(Number, Date)` * __Array__ = a `[` followed by exactly one `Types` followed by a `]` - eg. `[Boolean]`, `[Boolean | Null]` ### Guide `type-check` uses `Object.toString` to find out the basic type of a value. Specifically, ```js {}.toString.call(VALUE).slice(8, -1) {}.toString.call(true).slice(8, -1) // 'Boolean' ``` A basic type, eg. `Number`, uses this check. This is much more versatile than using `typeof` - for example, with `document`, `typeof` produces `'object'` which isn't that useful, and our technique produces `'HTMLDocument'`. You may check for multiple types by separating types with a `|`. The checker proceeds from left to right, and passes if the value is any of the types - eg. `String | Boolean` first checks if the value is a string, and then if it is a boolean. If it is none of those, then it returns false. Adding a `Maybe` in front of a list of multiple types is the same as also checking for `Null` and `Undefined` - eg. `Maybe String` is equivalent to `Undefined | Null | String`. You may add a comment to remind you of what the type is for by following an identifier with a `::` before a type (or multiple types). The comment is simply thrown out. The wildcard `*` matches all types. There are three types of structures for checking the contents of a value: 'fields', 'tuple', and 'array'. If used by itself, a 'fields' structure will pass with any type of object as long as it is an instance of `Object` and the properties pass - this allows for duck typing - eg. `{x: Boolean}`. To check if the properties pass, and the value is of a certain type, you can specify the type - eg. `Error{message: String}`. If you want to make a field optional, you can simply use `Maybe` - eg. `{x: Boolean, y: Maybe String}` will still pass if `y` is undefined (or null). If you don't care if the value has properties beyond what you have specified, you can use the 'etc' operator `...` - eg. `{x: Boolean, ...}` will match an object with an `x` property that is a boolean, and with zero or more other properties. For an array, you must specify one or more types (separated by `|`) - it will pass for something of any length as long as each element passes the types provided - eg. `[Number]`, `[Number | String]`. A tuple checks for a fixed number of elements, each of a potentially different type. Each element is separated by a comma - eg. `(String, Number)`. An array and tuple structure check that the value is of type `Array` by default, but if another type is specified, they will check for that instead - eg. `Int32Array[Number]`. You can use the wildcard `*` to search for any type at all. Check out the [type precedence](https://github.com/zaboco/type-precedence) library for type-check. ## Options Options is an object. It is an optional parameter to the `typeCheck` and `parsedTypeCheck` functions. The only current option is `customTypes`. <a name="custom-types" /> ### Custom Types __Example:__ ```js var options = { customTypes: { Even: { typeOf: 'Number', validate: function(x) { return x % 2 === 0; } } } }; typeCheck('Even', 2, options); // true typeCheck('Even', 3, options); // false ``` `customTypes` allows you to set up custom types for validation. The value of this is an object. The keys of the object are the types you will be matching. Each value of the object will be an object having a `typeOf` property - a string, and `validate` property - a function. The `typeOf` property is the type the value should be (optional - if not set only `validate` will be used), and `validate` is a function which should return true if the value is of that type. `validate` receives one parameter, which is the value that we are checking. ## Technical About `type-check` is written in [LiveScript](http://livescript.net/) - a language that compiles to JavaScript. It also uses the [prelude.ls](http://preludels.com/) library. # emoji-regex [](https://travis-ci.org/mathiasbynens/emoji-regex) _emoji-regex_ offers a regular expression to match all emoji symbols (including textual representations of emoji) as per the Unicode Standard. This repository contains a script that generates this regular expression based on [the data from Unicode v12](https://github.com/mathiasbynens/unicode-12.0.0). Because of this, the regular expression can easily be updated whenever new emoji are added to the Unicode standard. ## Installation Via [npm](https://www.npmjs.com/): ```bash npm install emoji-regex ``` In [Node.js](https://nodejs.org/): ```js const emojiRegex = require('emoji-regex'); // Note: because the regular expression has the global flag set, this module // exports a function that returns the regex rather than exporting the regular // expression itself, to make it impossible to (accidentally) mutate the // original regular expression. const text = ` \u{231A}: ⌚ default emoji presentation character (Emoji_Presentation) \u{2194}\u{FE0F}: ↔️ default text presentation character rendered as emoji \u{1F469}: 👩 emoji modifier base (Emoji_Modifier_Base) \u{1F469}\u{1F3FF}: 👩🏿 emoji modifier base followed by a modifier `; const regex = emojiRegex(); let match; while (match = regex.exec(text)) { const emoji = match[0]; console.log(`Matched sequence ${ emoji } — code points: ${ [...emoji].length }`); } ``` Console output: ``` Matched sequence ⌚ — code points: 1 Matched sequence ⌚ — code points: 1 Matched sequence ↔️ — code points: 2 Matched sequence ↔️ — code points: 2 Matched sequence 👩 — code points: 1 Matched sequence 👩 — code points: 1 Matched sequence 👩🏿 — code points: 2 Matched sequence 👩🏿 — code points: 2 ``` To match emoji in their textual representation as well (i.e. emoji that are not `Emoji_Presentation` symbols and that aren’t forced to render as emoji by a variation selector), `require` the other regex: ```js const emojiRegex = require('emoji-regex/text.js'); ``` Additionally, in environments which support ES2015 Unicode escapes, you may `require` ES2015-style versions of the regexes: ```js const emojiRegex = require('emoji-regex/es2015/index.js'); const emojiRegexText = require('emoji-regex/es2015/text.js'); ``` ## Author | [](https://twitter.com/mathias "Follow @mathias on Twitter") | |---| | [Mathias Bynens](https://mathiasbynens.be/) | ## License _emoji-regex_ is available under the [MIT](https://mths.be/mit) license. <img align="right" alt="Ajv logo" width="160" src="https://ajv.js.org/img/ajv.svg"> &nbsp; # Ajv JSON schema validator The fastest JSON validator for Node.js and browser. Supports JSON Schema draft-04/06/07/2019-09/2020-12 ([draft-04 support](https://ajv.js.org/json-schema.html#draft-04) requires ajv-draft-04 package) and JSON Type Definition [RFC8927](https://datatracker.ietf.org/doc/rfc8927/). 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We welcome implementing new features that will benefit many users and ideas to improve our documentation. Please review [Contributing guidelines](./CONTRIBUTING.md) and [Code components](https://ajv.js.org/components.html). ## Documentation All documentation is available on the [Ajv website](https://ajv.js.org). Some useful site links: - [Getting started](https://ajv.js.org/guide/getting-started.html) - [JSON Schema vs JSON Type Definition](https://ajv.js.org/guide/schema-language.html) - [API reference](https://ajv.js.org/api.html) - [Strict mode](https://ajv.js.org/strict-mode.html) - [Standalone validation code](https://ajv.js.org/standalone.html) - [Security considerations](https://ajv.js.org/security.html) - [Command line interface](https://ajv.js.org/packages/ajv-cli.html) - [Frequently Asked Questions](https://ajv.js.org/faq.html) ## <a name="sponsors"></a>Please [sponsor Ajv development](https://github.com/sponsors/epoberezkin) Since I asked to support Ajv development 40 people and 6 organizations contributed via GitHub and OpenCollective - this support helped receiving the MOSS grant! Your continuing support is very important - the funds will be used to develop and maintain Ajv once the next major version is released. Please sponsor Ajv via: - [GitHub sponsors page](https://github.com/sponsors/epoberezkin) (GitHub will match it) - [Ajv Open Collective️](https://opencollective.com/ajv) Thank you. #### Open Collective sponsors <a href="https://opencollective.com/ajv"><img src="https://opencollective.com/ajv/individuals.svg?width=890"></a> <a href="https://opencollective.com/ajv/organization/0/website"><img src="https://opencollective.com/ajv/organization/0/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/1/website"><img src="https://opencollective.com/ajv/organization/1/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/2/website"><img src="https://opencollective.com/ajv/organization/2/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/3/website"><img src="https://opencollective.com/ajv/organization/3/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/4/website"><img src="https://opencollective.com/ajv/organization/4/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/5/website"><img src="https://opencollective.com/ajv/organization/5/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/6/website"><img src="https://opencollective.com/ajv/organization/6/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/7/website"><img src="https://opencollective.com/ajv/organization/7/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/8/website"><img src="https://opencollective.com/ajv/organization/8/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/9/website"><img src="https://opencollective.com/ajv/organization/9/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/10/website"><img src="https://opencollective.com/ajv/organization/10/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/11/website"><img src="https://opencollective.com/ajv/organization/11/avatar.svg"></a> ## Performance Ajv generates code to turn JSON Schemas into super-fast validation functions that are efficient for v8 optimization. Currently Ajv is the fastest and the most standard compliant validator according to these benchmarks: - [json-schema-benchmark](https://github.com/ebdrup/json-schema-benchmark) - 50% faster than the second place - [jsck benchmark](https://github.com/pandastrike/jsck#benchmarks) - 20-190% faster - [z-schema benchmark](https://rawgit.com/zaggino/z-schema/master/benchmark/results.html) - [themis benchmark](https://cdn.rawgit.com/playlyfe/themis/master/benchmark/results.html) Performance of different validators by [json-schema-benchmark](https://github.com/ebdrup/json-schema-benchmark): [](https://github.com/ebdrup/json-schema-benchmark/blob/master/README.md#performance) ## Features - Ajv implements JSON Schema [draft-06/07/2019-09/2020-12](http://json-schema.org/) standards (draft-04 is supported in v6): - all validation keywords (see [JSON Schema validation keywords](https://ajv.js.org/json-schema.html)) - [OpenAPI](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.3.md) extensions: - NEW: keyword [discriminator](https://ajv.js.org/json-schema.html#discriminator). - keyword [nullable](https://ajv.js.org/json-schema.html#nullable). - full support of remote references (remote schemas have to be added with `addSchema` or compiled to be available) - support of recursive references between schemas - correct string lengths for strings with unicode pairs - JSON Schema [formats](https://ajv.js.org/guide/formats.html) (with [ajv-formats](https://github.com/ajv-validator/ajv-formats) plugin). - [validates schemas against meta-schema](https://ajv.js.org/api.html#api-validateschema) - NEW: supports [JSON Type Definition](https://datatracker.ietf.org/doc/rfc8927/): - all keywords (see [JSON Type Definition schema forms](https://ajv.js.org/json-type-definition.html)) - meta-schema for JTD schemas - "union" keyword and user-defined keywords (can be used inside "metadata" member of the schema) - supports [browsers](https://ajv.js.org/guide/environments.html#browsers) and Node.js 10.x - current - [asynchronous loading](https://ajv.js.org/guide/managing-schemas.html#asynchronous-schema-loading) of referenced schemas during compilation - "All errors" validation mode with [option allErrors](https://ajv.js.org/options.html#allerrors) - [error messages with parameters](https://ajv.js.org/api.html#validation-errors) describing error reasons to allow error message generation - i18n error messages support with [ajv-i18n](https://github.com/ajv-validator/ajv-i18n) package - [removing-additional-properties](https://ajv.js.org/guide/modifying-data.html#removing-additional-properties) - [assigning defaults](https://ajv.js.org/guide/modifying-data.html#assigning-defaults) to missing properties and items - [coercing data](https://ajv.js.org/guide/modifying-data.html#coercing-data-types) to the types specified in `type` keywords - [user-defined keywords](https://ajv.js.org/guide/user-keywords.html) - additional extension keywords with [ajv-keywords](https://github.com/ajv-validator/ajv-keywords) package - [\$data reference](https://ajv.js.org/guide/combining-schemas.html#data-reference) to use values from the validated data as values for the schema keywords - [asynchronous validation](https://ajv.js.org/guide/async-validation.html) of user-defined formats and keywords ## Install To install version 8: ``` npm install ajv ``` ## <a name="usage"></a>Getting started Try it in the Node.js REPL: https://runkit.com/npm/ajv In JavaScript: ```javascript // or ESM/TypeScript import import Ajv from "ajv" // Node.js require: const Ajv = require("ajv") const ajv = new Ajv() // options can be passed, e.g. {allErrors: true} const schema = { type: "object", properties: { foo: {type: "integer"}, bar: {type: "string"} }, required: ["foo"], additionalProperties: false, } const data = { foo: 1, bar: "abc" } const validate = ajv.compile(schema) const valid = validate(data) if (!valid) console.log(validate.errors) ``` Learn how to use Ajv and see more examples in the [Guide: getting started](https://ajv.js.org/guide/getting-started.html) ## Changes history See [https://github.com/ajv-validator/ajv/releases](https://github.com/ajv-validator/ajv/releases) **Please note**: [Changes in version 8.0.0](https://github.com/ajv-validator/ajv/releases/tag/v8.0.0) [Version 7.0.0](https://github.com/ajv-validator/ajv/releases/tag/v7.0.0) [Version 6.0.0](https://github.com/ajv-validator/ajv/releases/tag/v6.0.0). ## Code of conduct Please review and follow the [Code of conduct](./CODE_OF_CONDUCT.md). Please report any unacceptable behaviour to ajv.validator@gmail.com - it will be reviewed by the project team. ## Security contact To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. Please do NOT report security vulnerabilities via GitHub issues. ## Open-source software support Ajv is a part of [Tidelift subscription](https://tidelift.com/subscription/pkg/npm-ajv?utm_source=npm-ajv&utm_medium=referral&utm_campaign=readme) - it provides a centralised support to open-source software users, in addition to the support provided by software maintainers. ## License [MIT](./LICENSE) Deep Extend =========== Recursive object extending. [](https://travis-ci.org/unclechu/node-deep-extend) [](https://nodei.co/npm/deep-extend/) Install ------- ```bash $ npm install deep-extend ``` Usage ----- ```javascript var deepExtend = require('deep-extend'); var obj1 = { a: 1, b: 2, d: { a: 1, b: [], c: { test1: 123, test2: 321 } }, f: 5, g: 123, i: 321, j: [1, 2] }; var obj2 = { b: 3, c: 5, d: { b: { first: 'one', second: 'two' }, c: { test2: 222 } }, e: { one: 1, two: 2 }, f: [], g: (void 0), h: /abc/g, i: null, j: [3, 4] }; deepExtend(obj1, obj2); console.log(obj1); /* { a: 1, b: 3, d: { a: 1, b: { first: 'one', second: 'two' }, c: { test1: 123, test2: 222 } }, f: [], g: undefined, c: 5, e: { one: 1, two: 2 }, h: /abc/g, i: null, j: [3, 4] } */ ``` Unit testing ------------ ```bash $ npm test ``` Changelog --------- [CHANGELOG.md](./CHANGELOG.md) Any issues? ----------- Please, report about issues [here](https://github.com/unclechu/node-deep-extend/issues). License ------- [MIT](./LICENSE) TweetNaCl.js ============ Port of [TweetNaCl](http://tweetnacl.cr.yp.to) / [NaCl](http://nacl.cr.yp.to/) to JavaScript for modern browsers and Node.js. Public domain. [ ](https://travis-ci.org/dchest/tweetnacl-js) Demo: <https://dchest.github.io/tweetnacl-js/> Documentation ============= * [Overview](#overview) * [Audits](#audits) * [Installation](#installation) * [Examples](#examples) * [Usage](#usage) * [Public-key authenticated encryption (box)](#public-key-authenticated-encryption-box) * [Secret-key authenticated encryption (secretbox)](#secret-key-authenticated-encryption-secretbox) * [Scalar multiplication](#scalar-multiplication) * [Signatures](#signatures) * [Hashing](#hashing) * [Random bytes generation](#random-bytes-generation) * [Constant-time comparison](#constant-time-comparison) * [System requirements](#system-requirements) * [Development and testing](#development-and-testing) * [Benchmarks](#benchmarks) * [Contributors](#contributors) * [Who uses it](#who-uses-it) Overview -------- The primary goal of this project is to produce a translation of TweetNaCl to JavaScript which is as close as possible to the original C implementation, plus a thin layer of idiomatic high-level API on top of it. There are two versions, you can use either of them: * `nacl.js` is the port of TweetNaCl with minimum differences from the original + high-level API. * `nacl-fast.js` is like `nacl.js`, but with some functions replaced with faster versions. (Used by default when importing NPM package.) Audits ------ TweetNaCl.js has been audited by [Cure53](https://cure53.de/) in January-February 2017 (audit was sponsored by [Deletype](https://deletype.com)): > The overall outcome of this audit signals a particularly positive assessment > for TweetNaCl-js, as the testing team was unable to find any security > problems in the library. It has to be noted that this is an exceptionally > rare result of a source code audit for any project and must be seen as a true > testament to a development proceeding with security at its core. > > To reiterate, the TweetNaCl-js project, the source code was found to be > bug-free at this point. > > [...] > > In sum, the testing team is happy to recommend the TweetNaCl-js project as > likely one of the safer and more secure cryptographic tools among its > competition. [Read full audit report](https://cure53.de/tweetnacl.pdf) Installation ------------ You can install TweetNaCl.js via a package manager: [Yarn](https://yarnpkg.com/): $ yarn add tweetnacl [NPM](https://www.npmjs.org/): $ npm install tweetnacl or [download source code](https://github.com/dchest/tweetnacl-js/releases). Examples -------- You can find usage examples in our [wiki](https://github.com/dchest/tweetnacl-js/wiki/Examples). Usage ----- All API functions accept and return bytes as `Uint8Array`s. If you need to encode or decode strings, use functions from <https://github.com/dchest/tweetnacl-util-js> or one of the more robust codec packages. In Node.js v4 and later `Buffer` objects are backed by `Uint8Array`s, so you can freely pass them to TweetNaCl.js functions as arguments. The returned objects are still `Uint8Array`s, so if you need `Buffer`s, you'll have to convert them manually; make sure to convert using copying: `Buffer.from(array)` (or `new Buffer(array)` in Node.js v4 or earlier), instead of sharing: `Buffer.from(array.buffer)` (or `new Buffer(array.buffer)` Node 4 or earlier), because some functions return subarrays of their buffers. ### Public-key authenticated encryption (box) Implements *x25519-xsalsa20-poly1305*. #### nacl.box.keyPair() Generates a new random key pair for box and returns it as an object with `publicKey` and `secretKey` members: { publicKey: ..., // Uint8Array with 32-byte public key secretKey: ... // Uint8Array with 32-byte secret key } #### nacl.box.keyPair.fromSecretKey(secretKey) Returns a key pair for box with public key corresponding to the given secret key. #### nacl.box(message, nonce, theirPublicKey, mySecretKey) Encrypts and authenticates message using peer's public key, our secret key, and the given nonce, which must be unique for each distinct message for a key pair. Returns an encrypted and authenticated message, which is `nacl.box.overheadLength` longer than the original message. #### nacl.box.open(box, nonce, theirPublicKey, mySecretKey) Authenticates and decrypts the given box with peer's public key, our secret key, and the given nonce. Returns the original message, or `null` if authentication fails. #### nacl.box.before(theirPublicKey, mySecretKey) Returns a precomputed shared key which can be used in `nacl.box.after` and `nacl.box.open.after`. #### nacl.box.after(message, nonce, sharedKey) Same as `nacl.box`, but uses a shared key precomputed with `nacl.box.before`. #### nacl.box.open.after(box, nonce, sharedKey) Same as `nacl.box.open`, but uses a shared key precomputed with `nacl.box.before`. #### Constants ##### nacl.box.publicKeyLength = 32 Length of public key in bytes. ##### nacl.box.secretKeyLength = 32 Length of secret key in bytes. ##### nacl.box.sharedKeyLength = 32 Length of precomputed shared key in bytes. ##### nacl.box.nonceLength = 24 Length of nonce in bytes. ##### nacl.box.overheadLength = 16 Length of overhead added to box compared to original message. ### Secret-key authenticated encryption (secretbox) Implements *xsalsa20-poly1305*. #### nacl.secretbox(message, nonce, key) Encrypts and authenticates message using the key and the nonce. The nonce must be unique for each distinct message for this key. Returns an encrypted and authenticated message, which is `nacl.secretbox.overheadLength` longer than the original message. #### nacl.secretbox.open(box, nonce, key) Authenticates and decrypts the given secret box using the key and the nonce. Returns the original message, or `null` if authentication fails. #### Constants ##### nacl.secretbox.keyLength = 32 Length of key in bytes. ##### nacl.secretbox.nonceLength = 24 Length of nonce in bytes. ##### nacl.secretbox.overheadLength = 16 Length of overhead added to secret box compared to original message. ### Scalar multiplication Implements *x25519*. #### nacl.scalarMult(n, p) Multiplies an integer `n` by a group element `p` and returns the resulting group element. #### nacl.scalarMult.base(n) Multiplies an integer `n` by a standard group element and returns the resulting group element. #### Constants ##### nacl.scalarMult.scalarLength = 32 Length of scalar in bytes. ##### nacl.scalarMult.groupElementLength = 32 Length of group element in bytes. ### Signatures Implements [ed25519](http://ed25519.cr.yp.to). #### nacl.sign.keyPair() Generates new random key pair for signing and returns it as an object with `publicKey` and `secretKey` members: { publicKey: ..., // Uint8Array with 32-byte public key secretKey: ... // Uint8Array with 64-byte secret key } #### nacl.sign.keyPair.fromSecretKey(secretKey) Returns a signing key pair with public key corresponding to the given 64-byte secret key. The secret key must have been generated by `nacl.sign.keyPair` or `nacl.sign.keyPair.fromSeed`. #### nacl.sign.keyPair.fromSeed(seed) Returns a new signing key pair generated deterministically from a 32-byte seed. The seed must contain enough entropy to be secure. This method is not recommended for general use: instead, use `nacl.sign.keyPair` to generate a new key pair from a random seed. #### nacl.sign(message, secretKey) Signs the message using the secret key and returns a signed message. #### nacl.sign.open(signedMessage, publicKey) Verifies the signed message and returns the message without signature. Returns `null` if verification failed. #### nacl.sign.detached(message, secretKey) Signs the message using the secret key and returns a signature. #### nacl.sign.detached.verify(message, signature, publicKey) Verifies the signature for the message and returns `true` if verification succeeded or `false` if it failed. #### Constants ##### nacl.sign.publicKeyLength = 32 Length of signing public key in bytes. ##### nacl.sign.secretKeyLength = 64 Length of signing secret key in bytes. ##### nacl.sign.seedLength = 32 Length of seed for `nacl.sign.keyPair.fromSeed` in bytes. ##### nacl.sign.signatureLength = 64 Length of signature in bytes. ### Hashing Implements *SHA-512*. #### nacl.hash(message) Returns SHA-512 hash of the message. #### Constants ##### nacl.hash.hashLength = 64 Length of hash in bytes. ### Random bytes generation #### nacl.randomBytes(length) Returns a `Uint8Array` of the given length containing random bytes of cryptographic quality. **Implementation note** TweetNaCl.js uses the following methods to generate random bytes, depending on the platform it runs on: * `window.crypto.getRandomValues` (WebCrypto standard) * `window.msCrypto.getRandomValues` (Internet Explorer 11) * `crypto.randomBytes` (Node.js) If the platform doesn't provide a suitable PRNG, the following functions, which require random numbers, will throw exception: * `nacl.randomBytes` * `nacl.box.keyPair` * `nacl.sign.keyPair` Other functions are deterministic and will continue working. If a platform you are targeting doesn't implement secure random number generator, but you somehow have a cryptographically-strong source of entropy (not `Math.random`!), and you know what you are doing, you can plug it into TweetNaCl.js like this: nacl.setPRNG(function(x, n) { // ... copy n random bytes into x ... }); Note that `nacl.setPRNG` *completely replaces* internal random byte generator with the one provided. ### Constant-time comparison #### nacl.verify(x, y) Compares `x` and `y` in constant time and returns `true` if their lengths are non-zero and equal, and their contents are equal. Returns `false` if either of the arguments has zero length, or arguments have different lengths, or their contents differ. System requirements ------------------- TweetNaCl.js supports modern browsers that have a cryptographically secure pseudorandom number generator and typed arrays, including the latest versions of: * Chrome * Firefox * Safari (Mac, iOS) * Internet Explorer 11 Other systems: * Node.js Development and testing ------------------------ Install NPM modules needed for development: $ npm install To build minified versions: $ npm run build Tests use minified version, so make sure to rebuild it every time you change `nacl.js` or `nacl-fast.js`. ### Testing To run tests in Node.js: $ npm run test-node By default all tests described here work on `nacl.min.js`. To test other versions, set environment variable `NACL_SRC` to the file name you want to test. For example, the following command will test fast minified version: $ NACL_SRC=nacl-fast.min.js npm run test-node To run full suite of tests in Node.js, including comparing outputs of JavaScript port to outputs of the original C version: $ npm run test-node-all To prepare tests for browsers: $ npm run build-test-browser and then open `test/browser/test.html` (or `test/browser/test-fast.html`) to run them. To run tests in both Node and Electron: $ npm test ### Benchmarking To run benchmarks in Node.js: $ npm run bench $ NACL_SRC=nacl-fast.min.js npm run bench To run benchmarks in a browser, open `test/benchmark/bench.html` (or `test/benchmark/bench-fast.html`). Benchmarks ---------- For reference, here are benchmarks from MacBook Pro (Retina, 13-inch, Mid 2014) laptop with 2.6 GHz Intel Core i5 CPU (Intel) in Chrome 53/OS X and Xiaomi Redmi Note 3 smartphone with 1.8 GHz Qualcomm Snapdragon 650 64-bit CPU (ARM) in Chrome 52/Android: | | nacl.js Intel | nacl-fast.js Intel | nacl.js ARM | nacl-fast.js ARM | | ------------- |:-------------:|:-------------------:|:-------------:|:-----------------:| | salsa20 | 1.3 MB/s | 128 MB/s | 0.4 MB/s | 43 MB/s | | poly1305 | 13 MB/s | 171 MB/s | 4 MB/s | 52 MB/s | | hash | 4 MB/s | 34 MB/s | 0.9 MB/s | 12 MB/s | | secretbox 1K | 1113 op/s | 57583 op/s | 334 op/s | 14227 op/s | | box 1K | 145 op/s | 718 op/s | 37 op/s | 368 op/s | | scalarMult | 171 op/s | 733 op/s | 56 op/s | 380 op/s | | sign | 77 op/s | 200 op/s | 20 op/s | 61 op/s | | sign.open | 39 op/s | 102 op/s | 11 op/s | 31 op/s | (You can run benchmarks on your devices by clicking on the links at the bottom of the [home page](https://tweetnacl.js.org)). In short, with *nacl-fast.js* and 1024-byte messages you can expect to encrypt and authenticate more than 57000 messages per second on a typical laptop or more than 14000 messages per second on a $170 smartphone, sign about 200 and verify 100 messages per second on a laptop or 60 and 30 messages per second on a smartphone, per CPU core (with Web Workers you can do these operations in parallel), which is good enough for most applications. Contributors ------------ See AUTHORS.md file. Third-party libraries based on TweetNaCl.js ------------------------------------------- * [forward-secrecy](https://github.com/alax/forward-secrecy) — Axolotl ratchet implementation * [nacl-stream](https://github.com/dchest/nacl-stream-js) - streaming encryption * [tweetnacl-auth-js](https://github.com/dchest/tweetnacl-auth-js) — implementation of [`crypto_auth`](http://nacl.cr.yp.to/auth.html) * [tweetnacl-sealed-box](https://github.com/whs/tweetnacl-sealed-box) — implementation of [`sealed boxes`](https://download.libsodium.org/doc/public-key_cryptography/sealed_boxes.html) * [chloride](https://github.com/dominictarr/chloride) - unified API for various NaCl modules Who uses it ----------- Some notable users of TweetNaCl.js: * [GitHub](https://github.com) * [MEGA](https://github.com/meganz/webclient) * [Stellar](https://www.stellar.org/) * [miniLock](https://github.com/kaepora/miniLock) [](https://app.travis-ci.com/github/dankogai/js-base64) # base64.js Yet another [Base64] transcoder. [Base64]: http://en.wikipedia.org/wiki/Base64 ## Install ```shell $ npm install --save js-base64 ``` ## Usage ### In Browser Locally… ```html <script src="base64.js"></script> ``` … or Directly from CDN. In which case you don't even need to install. ```html <script src="https://cdn.jsdelivr.net/npm/js-base64@3.7.2/base64.min.js"></script> ``` This good old way loads `Base64` in the global context (`window`). Though `Base64.noConflict()` is made available, you should consider using ES6 Module to avoid tainting `window`. ### As an ES6 Module locally… ```javascript import { Base64 } from 'js-base64'; ``` ```javascript // or if you prefer no Base64 namespace import { encode, decode } from 'js-base64'; ``` or even remotely. ```html <script type="module"> // note jsdelivr.net does not automatically minify .mjs import { Base64 } from 'https://cdn.jsdelivr.net/npm/js-base64@3.7.2/base64.mjs'; </script> ``` ```html <script type="module"> // or if you prefer no Base64 namespace import { encode, decode } from 'https://cdn.jsdelivr.net/npm/js-base64@3.7.2/base64.mjs'; </script> ``` ### node.js (commonjs) ```javascript const {Base64} = require('js-base64'); ``` Unlike the case above, the global context is no longer modified. You can also use [esm] to `import` instead of `require`. [esm]: https://github.com/standard-things/esm ```javascript require=require('esm')(module); import {Base64} from 'js-base64'; ``` ## SYNOPSIS ```javascript let latin = 'dankogai'; let utf8 = '小飼弾' let u8s = new Uint8Array([100,97,110,107,111,103,97,105]); Base64.encode(latin); // ZGFua29nYWk= Base64.encode(latin, true)); // ZGFua29nYWk skips padding Base64.encodeURI(latin)); // ZGFua29nYWk Base64.btoa(latin); // ZGFua29nYWk= Base64.btoa(utf8); // raises exception Base64.fromUint8Array(u8s); // ZGFua29nYWk= Base64.fromUint8Array(u8s, true); // ZGFua29nYW which is URI safe Base64.encode(utf8); // 5bCP6aO85by+ Base64.encode(utf8, true) // 5bCP6aO85by- Base64.encodeURI(utf8); // 5bCP6aO85by- ``` ```javascript Base64.decode( 'ZGFua29nYWk=');// dankogai Base64.decode( 'ZGFua29nYWk'); // dankogai Base64.atob( 'ZGFua29nYWk=');// dankogai Base64.atob( '5bCP6aO85by+');// '小飼弾' which is nonsense Base64.toUint8Array('ZGFua29nYWk=');// u8s above Base64.decode( '5bCP6aO85by+');// 小飼弾 // note .decodeURI() is unnecessary since it accepts both flavors Base64.decode( '5bCP6aO85by-');// 小飼弾 ``` ```javascript Base64.isValid(0); // false: 0 is not string Base64.isValid(''); // true: a valid Base64-encoded empty byte Base64.isValid('ZA=='); // true: a valid Base64-encoded 'd' Base64.isValid('Z A='); // true: whitespaces are okay Base64.isValid('ZA'); // true: padding ='s can be omitted Base64.isValid('++'); // true: can be non URL-safe Base64.isValid('--'); // true: or URL-safe Base64.isValid('+-'); // false: can't mix both ``` ### Built-in Extensions By default `Base64` leaves built-in prototypes untouched. But you can extend them as below. ```javascript // you have to explicitly extend String.prototype Base64.extendString(); // once extended, you can do the following 'dankogai'.toBase64(); // ZGFua29nYWk= '小飼弾'.toBase64(); // 5bCP6aO85by+ '小飼弾'.toBase64(true); // 5bCP6aO85by- '小飼弾'.toBase64URI(); // 5bCP6aO85by- ab alias of .toBase64(true) '小飼弾'.toBase64URL(); // 5bCP6aO85by- an alias of .toBase64URI() 'ZGFua29nYWk='.fromBase64(); // dankogai '5bCP6aO85by+'.fromBase64(); // 小飼弾 '5bCP6aO85by-'.fromBase64(); // 小飼弾 '5bCP6aO85by-'.toUint8Array();// u8s above ``` ```javascript // you have to explicitly extend Uint8Array.prototype Base64.extendUint8Array(); // once extended, you can do the following u8s.toBase64(); // 'ZGFua29nYWk=' u8s.toBase64URI(); // 'ZGFua29nYWk' u8s.toBase64URL(); // 'ZGFua29nYWk' an alias of .toBase64URI() ``` ```javascript // extend all at once Base64.extendBuiltins() ``` ## `.decode()` vs `.atob` (and `.encode()` vs `btoa()`) Suppose you have: ``` var pngBase64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII="; ``` Which is a Base64-encoded 1x1 transparent PNG, **DO NOT USE** `Base64.decode(pngBase64)`.  Use `Base64.atob(pngBase64)` instead.  `Base64.decode()` decodes to UTF-8 string while `Base64.atob()` decodes to bytes, which is compatible to browser built-in `atob()` (Which is absent in node.js).  The same rule applies to the opposite direction. Or even better, `Base64.toUint8Array(pngBase64)`. ### If you really, really need an ES5 version You can transpiles to an ES5 that runs on IEs before 11. Do the following in your shell. ```shell $ make base64.es5.js ``` ## Brief History * Since version 3.3 it is written in TypeScript. Now `base64.mjs` is compiled from `base64.ts` then `base64.js` is generated from `base64.mjs`. * Since version 3.7 `base64.js` is ES5-compatible again (hence IE11-compabile). * Since 3.0 `js-base64` switch to ES2015 module so it is no longer compatible with legacy browsers like IE (see above) # Optionator <a name="optionator" /> Optionator is a JavaScript/Node.js option parsing and help generation library used by [eslint](http://eslint.org), [Grasp](http://graspjs.com), [LiveScript](http://livescript.net), [esmangle](https://github.com/estools/esmangle), [escodegen](https://github.com/estools/escodegen), and [many more](https://www.npmjs.com/browse/depended/optionator). For an online demo, check out the [Grasp online demo](http://www.graspjs.com/#demo). [About](#about) &middot; [Usage](#usage) &middot; [Settings Format](#settings-format) &middot; [Argument Format](#argument-format) ## Why? The problem with other option parsers, such as `yargs` or `minimist`, is they just accept all input, valid or not. With Optionator, if you mistype an option, it will give you an error (with a suggestion for what you meant). If you give the wrong type of argument for an option, it will give you an error rather than supplying the wrong input to your application. $ cmd --halp Invalid option '--halp' - perhaps you meant '--help'? $ cmd --count str Invalid value for option 'count' - expected type Int, received value: str. Other helpful features include reformatting the help text based on the size of the console, so that it fits even if the console is narrow, and accepting not just an array (eg. process.argv), but a string or object as well, making things like testing much easier. ## About Optionator uses [type-check](https://github.com/gkz/type-check) and [levn](https://github.com/gkz/levn) behind the scenes to cast and verify input according the specified types. MIT license. Version 0.9.1 npm install optionator For updates on Optionator, [follow me on twitter](https://twitter.com/gkzahariev). Optionator is a Node.js module, but can be used in the browser as well if packed with webpack/browserify. ## Usage `require('optionator');` returns a function. It has one property, `VERSION`, the current version of the library as a string. This function is called with an object specifying your options and other information, see the [settings format section](#settings-format). This in turn returns an object with three properties, `parse`, `parseArgv`, `generateHelp`, and `generateHelpForOption`, which are all functions. ```js var optionator = require('optionator')({ prepend: 'Usage: cmd [options]', append: 'Version 1.0.0', options: [{ option: 'help', alias: 'h', type: 'Boolean', description: 'displays help' }, { option: 'count', alias: 'c', type: 'Int', description: 'number of things', example: 'cmd --count 2' }] }); var options = optionator.parseArgv(process.argv); if (options.help) { console.log(optionator.generateHelp()); } ... ``` ### parse(input, parseOptions) `parse` processes the `input` according to your settings, and returns an object with the results. ##### arguments * input - `[String] | Object | String` - the input you wish to parse * parseOptions - `{slice: Int}` - all options optional - `slice` specifies how much to slice away from the beginning if the input is an array or string - by default `0` for string, `2` for array (works with `process.argv`) ##### returns `Object` - the parsed options, each key is a camelCase version of the option name (specified in dash-case), and each value is the processed value for that option. Positional values are in an array under the `_` key. ##### example ```js parse(['node', 't.js', '--count', '2', 'positional']); // {count: 2, _: ['positional']} parse('--count 2 positional'); // {count: 2, _: ['positional']} parse({count: 2, _:['positional']}); // {count: 2, _: ['positional']} ``` ### parseArgv(input) `parseArgv` works exactly like `parse`, but only for array input and it slices off the first two elements. ##### arguments * input - `[String]` - the input you wish to parse ##### returns See "returns" section in "parse" ##### example ```js parseArgv(process.argv); ``` ### generateHelp(helpOptions) `generateHelp` produces help text based on your settings. ##### arguments * helpOptions - `{showHidden: Boolean, interpolate: Object}` - all options optional - `showHidden` specifies whether to show options with `hidden: true` specified, by default it is `false` - `interpolate` specify data to be interpolated in `prepend` and `append` text, `{{key}}` is the format - eg. `generateHelp({interpolate:{version: '0.4.2'}})`, will change this `append` text: `Version {{version}}` to `Version 0.4.2` ##### returns `String` - the generated help text ##### example ```js generateHelp(); /* "Usage: cmd [options] positional -h, --help displays help -c, --count Int number of things Version 1.0.0 "*/ ``` ### generateHelpForOption(optionName) `generateHelpForOption` produces expanded help text for the specified with `optionName` option. If an `example` was specified for the option, it will be displayed, and if a `longDescription` was specified, it will display that instead of the `description`. ##### arguments * optionName - `String` - the name of the option to display ##### returns `String` - the generated help text for the option ##### example ```js generateHelpForOption('count'); /* "-c, --count Int description: number of things example: cmd --count 2 "*/ ``` ## Settings Format When your `require('optionator')`, you get a function that takes in a settings object. This object has the type: { prepend: String, append: String, options: [{heading: String} | { option: String, alias: [String] | String, type: String, enum: [String], default: String, restPositional: Boolean, required: Boolean, overrideRequired: Boolean, dependsOn: [String] | String, concatRepeatedArrays: Boolean | (Boolean, Object), mergeRepeatedObjects: Boolean, description: String, longDescription: String, example: [String] | String }], helpStyle: { aliasSeparator: String, typeSeparator: String, descriptionSeparator: String, initialIndent: Int, secondaryIndent: Int, maxPadFactor: Number }, mutuallyExclusive: [[String | [String]]], concatRepeatedArrays: Boolean | (Boolean, Object), // deprecated, set in defaults object mergeRepeatedObjects: Boolean, // deprecated, set in defaults object positionalAnywhere: Boolean, typeAliases: Object, defaults: Object } All of the properties are optional (the `Maybe` has been excluded for brevities sake), except for having either `heading: String` or `option: String` in each object in the `options` array. ### Top Level Properties * `prepend` is an optional string to be placed before the options in the help text * `append` is an optional string to be placed after the options in the help text * `options` is a required array specifying your options and headings, the options and headings will be displayed in the order specified * `helpStyle` is an optional object which enables you to change the default appearance of some aspects of the help text * `mutuallyExclusive` is an optional array of arrays of either strings or arrays of strings. The top level array is a list of rules, each rule is a list of elements - each element can be either a string (the name of an option), or a list of strings (a group of option names) - there will be an error if more than one element is present * `concatRepeatedArrays` see description under the "Option Properties" heading - use at the top level is deprecated, if you want to set this for all options, use the `defaults` property * `mergeRepeatedObjects` see description under the "Option Properties" heading - use at the top level is deprecated, if you want to set this for all options, use the `defaults` property * `positionalAnywhere` is an optional boolean (defaults to `true`) - when `true` it allows positional arguments anywhere, when `false`, all arguments after the first positional one are taken to be positional as well, even if they look like a flag. For example, with `positionalAnywhere: false`, the arguments `--flag --boom 12 --crack` would have two positional arguments: `12` and `--crack` * `typeAliases` is an optional object, it allows you to set aliases for types, eg. `{Path: 'String'}` would allow you to use the type `Path` as an alias for the type `String` * `defaults` is an optional object following the option properties format, which specifies default values for all options. A default will be overridden if manually set. For example, you can do `default: { type: "String" }` to set the default type of all options to `String`, and then override that default in an individual option by setting the `type` property #### Heading Properties * `heading` a required string, the name of the heading #### Option Properties * `option` the required name of the option - use dash-case, without the leading dashes * `alias` is an optional string or array of strings which specify any aliases for the option * `type` is a required string in the [type check](https://github.com/gkz/type-check) [format](https://github.com/gkz/type-check#type-format), this will be used to cast the inputted value and validate it * `enum` is an optional array of strings, each string will be parsed by [levn](https://github.com/gkz/levn) - the argument value must be one of the resulting values - each potential value must validate against the specified `type` * `default` is a optional string, which will be parsed by [levn](https://github.com/gkz/levn) and used as the default value if none is set - the value must validate against the specified `type` * `restPositional` is an optional boolean - if set to `true`, everything after the option will be taken to be a positional argument, even if it looks like a named argument * `required` is an optional boolean - if set to `true`, the option parsing will fail if the option is not defined * `overrideRequired` is a optional boolean - if set to `true` and the option is used, and there is another option which is required but not set, it will override the need for the required option and there will be no error - this is useful if you have required options and want to use `--help` or `--version` flags * `concatRepeatedArrays` is an optional boolean or tuple with boolean and options object (defaults to `false`) - when set to `true` and an option contains an array value and is repeated, the subsequent values for the flag will be appended rather than overwriting the original value - eg. option `g` of type `[String]`: `-g a -g b -g c,d` will result in `['a','b','c','d']` You can supply an options object by giving the following value: `[true, options]`. The one currently supported option is `oneValuePerFlag`, this only allows one array value per flag. This is useful if your potential values contain a comma. * `mergeRepeatedObjects` is an optional boolean (defaults to `false`) - when set to `true` and an option contains an object value and is repeated, the subsequent values for the flag will be merged rather than overwriting the original value - eg. option `g` of type `Object`: `-g a:1 -g b:2 -g c:3,d:4` will result in `{a: 1, b: 2, c: 3, d: 4}` * `dependsOn` is an optional string or array of strings - if simply a string (the name of another option), it will make sure that that other option is set, if an array of strings, depending on whether `'and'` or `'or'` is first, it will either check whether all (`['and', 'option-a', 'option-b']`), or at least one (`['or', 'option-a', 'option-b']`) other options are set * `description` is an optional string, which will be displayed next to the option in the help text * `longDescription` is an optional string, it will be displayed instead of the `description` when `generateHelpForOption` is used * `example` is an optional string or array of strings with example(s) for the option - these will be displayed when `generateHelpForOption` is used #### Help Style Properties * `aliasSeparator` is an optional string, separates multiple names from each other - default: ' ,' * `typeSeparator` is an optional string, separates the type from the names - default: ' ' * `descriptionSeparator` is an optional string , separates the description from the padded name and type - default: ' ' * `initialIndent` is an optional int - the amount of indent for options - default: 2 * `secondaryIndent` is an optional int - the amount of indent if wrapped fully (in addition to the initial indent) - default: 4 * `maxPadFactor` is an optional number - affects the default level of padding for the names/type, it is multiplied by the average of the length of the names/type - default: 1.5 ## Argument Format At the highest level there are two types of arguments: named, and positional. Name arguments of any length are prefixed with `--` (eg. `--go`), and those of one character may be prefixed with either `--` or `-` (eg. `-g`). There are two types of named arguments: boolean flags (eg. `--problemo`, `-p`) which take no value and result in a `true` if they are present, the falsey `undefined` if they are not present, or `false` if present and explicitly prefixed with `no` (eg. `--no-problemo`). Named arguments with values (eg. `--tseries 800`, `-t 800`) are the other type. If the option has a type `Boolean` it will automatically be made into a boolean flag. Any other type results in a named argument that takes a value. For more information about how to properly set types to get the value you want, take a look at the [type check](https://github.com/gkz/type-check) and [levn](https://github.com/gkz/levn) pages. You can group single character arguments that use a single `-`, however all except the last must be boolean flags (which take no value). The last may be a boolean flag, or an argument which takes a value - eg. `-ba 2` is equivalent to `-b -a 2`. Positional arguments are all those values which do not fall under the above - they can be anywhere, not just at the end. For example, in `cmd -b one -a 2 two` where `b` is a boolean flag, and `a` has the type `Number`, there are two positional arguments, `one` and `two`. Everything after an `--` is positional, even if it looks like a named argument. You may optionally use `=` to separate option names from values, for example: `--count=2`. If you specify the option `NUM`, then any argument using a single `-` followed by a number will be valid and will set the value of `NUM`. Eg. `-2` will be parsed into `NUM: 2`. If duplicate named arguments are present, the last one will be taken. ## Technical About `optionator` is written in [LiveScript](http://livescript.net/) - a language that compiles to JavaScript. It uses [levn](https://github.com/gkz/levn) to cast arguments to their specified type, and uses [type-check](https://github.com/gkz/type-check) to validate values. It also uses the [prelude.ls](http://preludels.com/) library. gauge ===== A nearly stateless terminal based horizontal gauge / progress bar. ```javascript var Gauge = require("gauge") var gauge = new Gauge() gauge.show("test", 0.20) gauge.pulse("this") gauge.hide() ```  ### CHANGES FROM 1.x Gauge 2.x is breaking release, please see the [changelog] for details on what's changed if you were previously a user of this module. [changelog]: CHANGELOG.md ### THE GAUGE CLASS This is the typical interface to the module– it provides a pretty fire-and-forget interface to displaying your status information. ``` var Gauge = require("gauge") var gauge = new Gauge([stream], [options]) ``` * **stream** – *(optional, default STDERR)* A stream that progress bar updates are to be written to. Gauge honors backpressure and will pause most writing if it is indicated. * **options** – *(optional)* An option object. Constructs a new gauge. Gauges are drawn on a single line, and are not drawn if **stream** isn't a tty and a tty isn't explicitly provided. If **stream** is a terminal or if you pass in **tty** to **options** then we will detect terminal resizes and redraw to fit. We do this by watching for `resize` events on the tty. (To work around a bug in verisons of Node prior to 2.5.0, we watch for them on stdout if the tty is stderr.) Resizes to larger window sizes will be clean, but shrinking the window will always result in some cruft. **IMPORTANT:** If you prevously were passing in a non-tty stream but you still want output (for example, a stream wrapped by the `ansi` module) then you need to pass in the **tty** option below, as `gauge` needs access to the underlying tty in order to do things like terminal resizes and terminal width detection. The **options** object can have the following properties, all of which are optional: * **updateInterval**: How often gauge updates should be drawn, in miliseconds. * **fixedFramerate**: Defaults to false on node 0.8, true on everything else. When this is true a timer is created to trigger once every `updateInterval` ms, when false, updates are printed as soon as they come in but updates more often than `updateInterval` are ignored. The reason 0.8 doesn't have this set to true is that it can't `unref` its timer and so it would stop your program from exiting– if you want to use this feature with 0.8 just make sure you call `gauge.disable()` before you expect your program to exit. * **themes**: A themeset to use when selecting the theme to use. Defaults to `gauge/themes`, see the [themes] documentation for details. * **theme**: Select a theme for use, it can be a: * Theme object, in which case the **themes** is not used. * The name of a theme, which will be looked up in the current *themes* object. * A configuration object with any of `hasUnicode`, `hasColor` or `platform` keys, which if wlll be used to override our guesses when making a default theme selection. If no theme is selected then a default is picked using a combination of our best guesses at your OS, color support and unicode support. * **template**: Describes what you want your gauge to look like. The default is what npm uses. Detailed [documentation] is later in this document. * **hideCursor**: Defaults to true. If true, then the cursor will be hidden while the gauge is displayed. * **tty**: The tty that you're ultimately writing to. Defaults to the same as **stream**. This is used for detecting the width of the terminal and resizes. The width used is `tty.columns - 1`. If no tty is available then a width of `79` is assumed. * **enabled**: Defaults to true if `tty` is a TTY, false otherwise. If true the gauge starts enabled. If disabled then all update commands are ignored and no gauge will be printed until you call `.enable()`. * **Plumbing**: The class to use to actually generate the gauge for printing. This defaults to `require('gauge/plumbing')` and ordinarly you shouldn't need to override this. * **cleanupOnExit**: Defaults to true. Ordinarily we register an exit handler to make sure your cursor is turned back on and the progress bar erased when your process exits, even if you Ctrl-C out or otherwise exit unexpectedly. You can disable this and it won't register the exit handler. [has-unicode]: https://www.npmjs.com/package/has-unicode [themes]: #themes [documentation]: #templates #### `gauge.show(section | status, [completed])` The first argument is either the section, the name of the current thing contributing to progress, or an object with keys like **section**, **subsection** & **completed** (or any others you have types for in a custom template). If you don't want to update or set any of these you can pass `null` and it will be ignored. The second argument is the percent completed as a value between 0 and 1. Without it, completion is just not updated. You'll also note that completion can be passed in as part of a status object as the first argument. If both it and the completed argument are passed in, the completed argument wins. #### `gauge.hide([cb])` Removes the gauge from the terminal. Optionally, callback `cb` after IO has had an opportunity to happen (currently this just means after `setImmediate` has called back.) It turns out this is important when you're pausing the progress bar on one filehandle and printing to another– otherwise (with a big enough print) node can end up printing the "end progress bar" bits to the progress bar filehandle while other stuff is printing to another filehandle. These getting interleaved can cause corruption in some terminals. #### `gauge.pulse([subsection])` * **subsection** – *(optional)* The specific thing that triggered this pulse Spins the spinner in the gauge to show output. If **subsection** is included then it will be combined with the last name passed to `gauge.show`. #### `gauge.disable()` Hides the gauge and ignores further calls to `show` or `pulse`. #### `gauge.enable()` Shows the gauge and resumes updating when `show` or `pulse` is called. #### `gauge.isEnabled()` Returns true if the gauge is enabled. #### `gauge.setThemeset(themes)` Change the themeset to select a theme from. The same as the `themes` option used in the constructor. The theme will be reselected from this themeset. #### `gauge.setTheme(theme)` Change the active theme, will be displayed with the next show or pulse. This can be: * Theme object, in which case the **themes** is not used. * The name of a theme, which will be looked up in the current *themes* object. * A configuration object with any of `hasUnicode`, `hasColor` or `platform` keys, which if wlll be used to override our guesses when making a default theme selection. If no theme is selected then a default is picked using a combination of our best guesses at your OS, color support and unicode support. #### `gauge.setTemplate(template)` Change the active template, will be displayed with the next show or pulse ### Tracking Completion If you have more than one thing going on that you want to track completion of, you may find the related [are-we-there-yet] helpful. It's `change` event can be wired up to the `show` method to get a more traditional progress bar interface. [are-we-there-yet]: https://www.npmjs.com/package/are-we-there-yet ### THEMES ``` var themes = require('gauge/themes') // fetch the default color unicode theme for this platform var ourTheme = themes({hasUnicode: true, hasColor: true}) // fetch the default non-color unicode theme for osx var ourTheme = themes({hasUnicode: true, hasColor: false, platform: 'darwin'}) // create a new theme based on the color ascii theme for this platform // that brackets the progress bar with arrows var ourTheme = themes.newTheme(theme(hasUnicode: false, hasColor: true}), { preProgressbar: '→', postProgressbar: '←' }) ``` The object returned by `gauge/themes` is an instance of the `ThemeSet` class. ``` var ThemeSet = require('gauge/theme-set') var themes = new ThemeSet() // or var themes = require('gauge/themes') var mythemes = themes.newThemeset() // creates a new themeset based on the default themes ``` #### themes(opts) #### themes.getDefault(opts) Theme objects are a function that fetches the default theme based on platform, unicode and color support. Options is an object with the following properties: * **hasUnicode** - If true, fetch a unicode theme, if no unicode theme is available then a non-unicode theme will be used. * **hasColor** - If true, fetch a color theme, if no color theme is available a non-color theme will be used. * **platform** (optional) - Defaults to `process.platform`. If no platform match is available then `fallback` is used instead. If no compatible theme can be found then an error will be thrown with a `code` of `EMISSINGTHEME`. #### themes.addTheme(themeName, themeObj) #### themes.addTheme(themeName, [parentTheme], newTheme) Adds a named theme to the themeset. You can pass in either a theme object, as returned by `themes.newTheme` or the arguments you'd pass to `themes.newTheme`. #### themes.getThemeNames() Return a list of all of the names of the themes in this themeset. Suitable for use in `themes.getTheme(…)`. #### themes.getTheme(name) Returns the theme object from this theme set named `name`. If `name` does not exist in this themeset an error will be thrown with a `code` of `EMISSINGTHEME`. #### themes.setDefault([opts], themeName) `opts` is an object with the following properties. * **platform** - Defaults to `'fallback'`. If your theme is platform specific, specify that here with the platform from `process.platform`, eg, `win32`, `darwin`, etc. * **hasUnicode** - Defaults to `false`. If your theme uses unicode you should set this to true. * **hasColor** - Defaults to `false`. If your theme uses color you should set this to true. `themeName` is the name of the theme (as given to `addTheme`) to use for this set of `opts`. #### themes.newTheme([parentTheme,] newTheme) Create a new theme object based on `parentTheme`. If no `parentTheme` is provided then a minimal parentTheme that defines functions for rendering the activity indicator (spinner) and progress bar will be defined. (This fallback parent is defined in `gauge/base-theme`.) newTheme should be a bare object– we'll start by discussing the properties defined by the default themes: * **preProgressbar** - displayed prior to the progress bar, if the progress bar is displayed. * **postProgressbar** - displayed after the progress bar, if the progress bar is displayed. * **progressBarTheme** - The subtheme passed through to the progress bar renderer, it's an object with `complete` and `remaining` properties that are the strings you want repeated for those sections of the progress bar. * **activityIndicatorTheme** - The theme for the activity indicator (spinner), this can either be a string, in which each character is a different step, or an array of strings. * **preSubsection** - Displayed as a separator between the `section` and `subsection` when the latter is printed. More generally, themes can have any value that would be a valid value when rendering templates. The properties in the theme are used when their name matches a type in the template. Their values can be: * **strings & numbers** - They'll be included as is * **function (values, theme, width)** - Should return what you want in your output. *values* is an object with values provided via `gauge.show`, *theme* is the theme specific to this item (see below) or this theme object, and *width* is the number of characters wide your result should be. There are a couple of special prefixes: * **pre** - Is shown prior to the property, if its displayed. * **post** - Is shown after the property, if its displayed. And one special suffix: * **Theme** - Its value is passed to a function-type item as the theme. #### themes.addToAllThemes(theme) This *mixes-in* `theme` into all themes currently defined. It also adds it to the default parent theme for this themeset, so future themes added to this themeset will get the values from `theme` by default. #### themes.newThemeset() Copy the current themeset into a new one. This allows you to easily inherit one themeset from another. ### TEMPLATES A template is an array of objects and strings that, after being evaluated, will be turned into the gauge line. The default template is: ```javascript [ {type: 'progressbar', length: 20}, {type: 'activityIndicator', kerning: 1, length: 1}, {type: 'section', kerning: 1, default: ''}, {type: 'subsection', kerning: 1, default: ''} ] ``` The various template elements can either be **plain strings**, in which case they will be be included verbatum in the output, or objects with the following properties: * *type* can be any of the following plus any keys you pass into `gauge.show` plus any keys you have on a custom theme. * `section` – What big thing you're working on now. * `subsection` – What component of that thing is currently working. * `activityIndicator` – Shows a spinner using the `activityIndicatorTheme` from your active theme. * `progressbar` – A progress bar representing your current `completed` using the `progressbarTheme` from your active theme. * *kerning* – Number of spaces that must be between this item and other items, if this item is displayed at all. * *maxLength* – The maximum length for this element. If its value is longer it will be truncated. * *minLength* – The minimum length for this element. If its value is shorter it will be padded according to the *align* value. * *align* – (Default: left) Possible values "left", "right" and "center". Works as you'd expect from word processors. * *length* – Provides a single value for both *minLength* and *maxLength*. If both *length* and *minLength or *maxLength* are specifed then the latter take precedence. * *value* – A literal value to use for this template item. * *default* – A default value to use for this template item if a value wasn't otherwise passed in. ### PLUMBING This is the super simple, assume nothing, do no magic internals used by gauge to implement its ordinary interface. ``` var Plumbing = require('gauge/plumbing') var gauge = new Plumbing(theme, template, width) ``` * **theme**: The theme to use. * **template**: The template to use. * **width**: How wide your gauge should be #### `gauge.setTheme(theme)` Change the active theme. #### `gauge.setTemplate(template)` Change the active template. #### `gauge.setWidth(width)` Change the width to render at. #### `gauge.hide()` Return the string necessary to hide the progress bar #### `gauge.hideCursor()` Return a string to hide the cursor. #### `gauge.showCursor()` Return a string to show the cursor. #### `gauge.show(status)` Using `status` for values, render the provided template with the theme and return a string that is suitable for printing to update the gauge. assemblyscript-json # assemblyscript-json ## Table of contents ### Namespaces - [JSON](modules/json.md) ### Classes - [DecoderState](classes/decoderstate.md) - [JSONDecoder](classes/jsondecoder.md) - [JSONEncoder](classes/jsonencoder.md) - [JSONHandler](classes/jsonhandler.md) - [ThrowingJSONHandler](classes/throwingjsonhandler.md) ## HIDAPI library for Windows, Linux, FreeBSD and macOS | CI instance | Status | |----------------------|--------| | `macOS master` | [](https://travis-ci.org/libusb/hidapi) | | `Windows master` | [](https://ci.appveyor.com/project/Youw/hidapi/branch/master) | | `Linux/BSD, last build (branch/PR)` | [](https://builds.sr.ht/~qbicz/hidapi?) | HIDAPI is a multi-platform library which allows an application to interface with USB and Bluetooth HID-Class devices on Windows, Linux, FreeBSD, and macOS. HIDAPI can be either built as a shared library (`.so`, `.dll` or `.dylib`) or can be embedded directly into a target application by adding a single source file (per platform) and a single header. HIDAPI library was originally developed by Alan Ott ([signal11](https://github.com/signal11)). It was moved to [libusb/hidapi](https://github.com/libusb/hidapi) on June 4th, 2019, in order to merge important bugfixes and continue development of the library. ## Table of Contents * [About](#about) * [What Does the API Look Like?](#what-does-the-api-look-like) * [License](#license) * [Download](#download) * [Build Instructions](#build-instructions) * [Prerequisites](#prerequisites) * [Linux](#linux) * [FreeBSD](#freebsd) * [Mac](#mac) * [Windows](#windows) * [Building HIDAPI into a shared library on Unix Platforms](#building-hidapi-into-a-shared-library-on-unix-platforms) * [Building the manual way on Unix platforms](#building-the-manual-way-on-unix-platforms) * [Building on Windows](#building-on-windows) * [Cross Compiling](#cross-compiling) * [Prerequisites](#prerequisites-1) * [Building HIDAPI](#building-hidapi) ## About HIDAPI has five back-ends: * Windows (using `hid.dll`) * Linux/hidraw (using the Kernel's hidraw driver) * Linux/libusb (using libusb-1.0) * FreeBSD (using libusb-1.0) * Mac (using IOHidManager) On Linux, either the hidraw or the libusb back-end can be used. There are tradeoffs, and the functionality supported is slightly different. __Linux/hidraw__ (`linux/hid.c`): This back-end uses the hidraw interface in the Linux kernel, and supports both USB and Bluetooth HID devices. It requires kernel version at least 2.6.39 to build. In addition, it will only communicate with devices which have hidraw nodes associated with them. Keyboards, mice, and some other devices which are blacklisted from having hidraw nodes will not work. Fortunately, for nearly all the uses of hidraw, this is not a problem. __Linux/FreeBSD/libusb__ (`libusb/hid.c`): This back-end uses libusb-1.0 to communicate directly to a USB device. This back-end will of course not work with Bluetooth devices. HIDAPI also comes with a Test GUI. The Test GUI is cross-platform and uses Fox Toolkit <http://www.fox-toolkit.org>. It will build on every platform which HIDAPI supports. Since it relies on a 3rd party library, building it is optional but recommended because it is so useful when debugging hardware. ## What Does the API Look Like? The API provides the most commonly used HID functions including sending and receiving of input, output, and feature reports. The sample program, which communicates with a heavily hacked up version of the Microchip USB Generic HID sample looks like this (with error checking removed for simplicity): **Warning: Only run the code you understand, and only when it conforms to the device spec. Writing data at random to your HID devices can break them.** ```c #ifdef WIN32 #include <windows.h> #endif #include <stdio.h> #include <stdlib.h> #include "hidapi.h" #define MAX_STR 255 int main(int argc, char* argv[]) { int res; unsigned char buf[65]; wchar_t wstr[MAX_STR]; hid_device *handle; int i; // Initialize the hidapi library res = hid_init(); // Open the device using the VID, PID, // and optionally the Serial number. handle = hid_open(0x4d8, 0x3f, NULL); // Read the Manufacturer String res = hid_get_manufacturer_string(handle, wstr, MAX_STR); wprintf(L"Manufacturer String: %s\n", wstr); // Read the Product String res = hid_get_product_string(handle, wstr, MAX_STR); wprintf(L"Product String: %s\n", wstr); // Read the Serial Number String res = hid_get_serial_number_string(handle, wstr, MAX_STR); wprintf(L"Serial Number String: (%d) %s\n", wstr[0], wstr); // Read Indexed String 1 res = hid_get_indexed_string(handle, 1, wstr, MAX_STR); wprintf(L"Indexed String 1: %s\n", wstr); // Toggle LED (cmd 0x80). The first byte is the report number (0x0). buf[0] = 0x0; buf[1] = 0x80; res = hid_write(handle, buf, 65); // Request state (cmd 0x81). The first byte is the report number (0x0). buf[0] = 0x0; buf[1] = 0x81; res = hid_write(handle, buf, 65); // Read requested state res = hid_read(handle, buf, 65); // Print out the returned buffer. for (i = 0; i < 4; i++) printf("buf[%d]: %d\n", i, buf[i]); // Close the device hid_close(handle); // Finalize the hidapi library res = hid_exit(); return 0; } ``` You can also use [hidtest/test.c](hidtest/test.c) as a starting point for your applications. ## License HIDAPI may be used by one of three licenses as outlined in [LICENSE.txt](LICENSE.txt). ## Download HIDAPI can be downloaded from GitHub ```sh git clone git://github.com/libusb/hidapi.git ``` ## Build Instructions This section is long. Don't be put off by this. It's not long because it's complicated to build HIDAPI; it's quite the opposite. This section is long because of the flexibility of HIDAPI and the large number of ways in which it can be built and used. You will likely pick a single build method. HIDAPI can be built in several different ways. If you elect to build a shared library, you will need to build it from the HIDAPI source distribution. If you choose instead to embed HIDAPI directly into your application, you can skip the building and look at the provided platform Makefiles for guidance. These platform Makefiles are located in `linux/`, `libusb/`, `mac/` and `windows/` and are called `Makefile-manual`. In addition, Visual Studio projects are provided. Even if you're going to embed HIDAPI into your project, it is still beneficial to build the example programs. ### Prerequisites: #### Linux: On Linux, you will need to install development packages for libudev, libusb and optionally Fox-toolkit (for the test GUI). On Debian/Ubuntu systems these can be installed by running: ```sh sudo apt-get install libudev-dev libusb-1.0-0-dev libfox-1.6-dev ``` If you downloaded the source directly from the git repository (using git clone), you'll need Autotools: ```sh sudo apt-get install autotools-dev autoconf automake libtool ``` #### FreeBSD: On FreeBSD you will need to install GNU make, libiconv, and optionally Fox-Toolkit (for the test GUI). This is done by running the following: ```sh pkg_add -r gmake libiconv fox16 ``` If you downloaded the source directly from the git repository (using git clone), you'll need Autotools: ```sh pkg_add -r autotools ``` #### Mac: On Mac, you will need to install Fox-Toolkit if you wish to build the Test GUI. There are two ways to do this, and each has a slight complication. Which method you use depends on your use case. If you wish to build the Test GUI just for your own testing on your own computer, then the easiest method is to install Fox-Toolkit using ports: ```sh sudo port install fox ``` If you wish to build the TestGUI app bundle to redistribute to others, you will need to install Fox-toolkit from source. This is because the version of fox that gets installed using ports uses the ports X11 libraries which are not compatible with the Apple X11 libraries. If you install Fox with ports and then try to distribute your built app bundle, it will simply fail to run on other systems. To install Fox-Toolkit manually, download the source package from <http://www.fox-toolkit.org>, extract it, and run the following from within the extracted source: ```sh ./configure && make && make install ``` #### Windows: On Windows, if you want to build the test GUI, you will need to get the `hidapi-externals.zip` package from the download site. This contains pre-built binaries for Fox-toolkit. Extract `hidapi-externals.zip` just outside of hidapi, so that hidapi-externals and hidapi are on the same level, as shown: ``` Parent_Folder | +hidapi +hidapi-externals ``` Again, this step is not required if you do not wish to build the test GUI. ### Building HIDAPI into a shared library on Unix Platforms: On Unix-like systems such as Linux, FreeBSD, macOS, and even Windows, using MinGW or Cygwin, the easiest way to build a standard system-installed shared library is to use the GNU Autotools build system. If you checked out the source from the git repository, run the following: ```sh ./bootstrap ./configure make make install # as root, or using sudo ``` If you downloaded a source package (i.e.: if you did not run git clone), you can skip the `./bootstrap` step. `./configure` can take several arguments which control the build. The two most likely to be used are: ```sh --enable-testgui Enable build of the Test GUI. This requires Fox toolkit to be installed. Instructions for installing Fox-Toolkit on each platform are in the Prerequisites section above. --prefix=/usr Specify where you want the output headers and libraries to be installed. The example above will put the headers in /usr/include and the binaries in /usr/lib. The default is to install into /usr/local which is fine on most systems. ``` ### Building the manual way on Unix platforms: Manual Makefiles are provided mostly to give the user and idea what it takes to build a program which embeds HIDAPI directly inside of it. These should really be used as examples only. If you want to build a system-wide shared library, use the Autotools method described above. To build HIDAPI using the manual Makefiles, change to the directory of your platform and run make. For example, on Linux run: ```sh cd linux/ make -f Makefile-manual ``` To build the Test GUI using the manual makefiles: ```sh cd testgui/ make -f Makefile-manual ``` ### Building on Windows: To build the HIDAPI DLL on Windows using Visual Studio, build the `.sln` file in the `windows/` directory. To build the Test GUI on windows using Visual Studio, build the `.sln` file in the `testgui/` directory. To build HIDAPI using MinGW or Cygwin using Autotools, use the instructions in the section [Building HIDAPI into a shared library on Unix Platforms](#building-hidapi-into-a-shared-library-on-unix-platforms) above. Note that building the Test GUI with MinGW or Cygwin will require the Windows procedure in the [Prerequisites](#prerequisites-1) section above (i.e.: `hidapi-externals.zip`). To build HIDAPI using MinGW using the Manual Makefiles, see the section [Building the manual way on Unix platforms](#building-the-manual-way-on-unix-platforms) above. HIDAPI can also be built using the Windows DDK (now also called the Windows Driver Kit or WDK). This method was originally required for the HIDAPI build but not anymore. However, some users still prefer this method. It is not as well supported anymore but should still work. Patches are welcome if it does not. To build using the DDK: 1. Install the Windows Driver Kit (WDK) from Microsoft. 2. From the Start menu, in the Windows Driver Kits folder, select Build Environments, then your operating system, then the x86 Free Build Environment (or one that is appropriate for your system). 3. From the console, change directory to the `windows/ddk_build/` directory, which is part of the HIDAPI distribution. 4. Type build. 5. You can find the output files (DLL and LIB) in a subdirectory created by the build system which is appropriate for your environment. On Windows XP, this directory is `objfre_wxp_x86/i386`. ## Cross Compiling This section talks about cross compiling HIDAPI for Linux using Autotools. This is useful for using HIDAPI on embedded Linux targets. These instructions assume the most raw kind of embedded Linux build, where all prerequisites will need to be built first. This process will of course vary based on your embedded Linux build system if you are using one, such as OpenEmbedded or Buildroot. For the purpose of this section, it will be assumed that the following environment variables are exported. ```sh $ export STAGING=$HOME/out $ export HOST=arm-linux ``` `STAGING` and `HOST` can be modified to suit your setup. ### Prerequisites Note that the build of libudev is the very basic configuration. Build libusb. From the libusb source directory, run: ```sh ./configure --host=$HOST --prefix=$STAGING make make install ``` Build libudev. From the libudev source directory, run: ```sh ./configure --disable-gudev --disable-introspection --disable-hwdb \ --host=$HOST --prefix=$STAGING make make install ``` ### Building HIDAPI Build HIDAPI: ``` PKG_CONFIG_DIR= \ PKG_CONFIG_LIBDIR=$STAGING/lib/pkgconfig:$STAGING/share/pkgconfig \ PKG_CONFIG_SYSROOT_DIR=$STAGING \ ./configure --host=$HOST --prefix=$STAGING ``` # create-hmac [](https://www.npmjs.org/package/create-hmac) [](https://travis-ci.org/crypto-browserify/createHmac) [](https://david-dm.org/crypto-browserify/createHmac#info=dependencies) [](https://github.com/feross/standard) Node style HMACs for use in the browser, with native HMAC functions in node. API is the same as HMACs in node: ```js var createHmac = require('create-hmac') var hmac = createHmac('sha224', Buffer.from('secret key')) hmac.update('synchronous write') //optional encoding parameter hmac.digest() // synchronously get result with optional encoding parameter hmac.write('write to it as a stream') hmac.end() //remember it's a stream hmac.read() //only if you ended it as a stream though ``` ESQuery is a library for querying the AST output by Esprima for patterns of syntax using a CSS style selector system. Check out the demo: [demo](https://estools.github.io/esquery/) The following selectors are supported: * AST node type: `ForStatement` * [wildcard](http://dev.w3.org/csswg/selectors4/#universal-selector): `*` * [attribute existence](http://dev.w3.org/csswg/selectors4/#attribute-selectors): `[attr]` * [attribute value](http://dev.w3.org/csswg/selectors4/#attribute-selectors): `[attr="foo"]` or `[attr=123]` * attribute regex: `[attr=/foo.*/]` or (with flags) `[attr=/foo.*/is]` * attribute conditions: `[attr!="foo"]`, `[attr>2]`, `[attr<3]`, `[attr>=2]`, or `[attr<=3]` * nested attribute: `[attr.level2="foo"]` * field: `FunctionDeclaration > Identifier.id` * [First](http://dev.w3.org/csswg/selectors4/#the-first-child-pseudo) or [last](http://dev.w3.org/csswg/selectors4/#the-last-child-pseudo) child: `:first-child` or `:last-child` * [nth-child](http://dev.w3.org/csswg/selectors4/#the-nth-child-pseudo) (no ax+b support): `:nth-child(2)` * [nth-last-child](http://dev.w3.org/csswg/selectors4/#the-nth-last-child-pseudo) (no ax+b support): `:nth-last-child(1)` * [descendant](http://dev.w3.org/csswg/selectors4/#descendant-combinators): `ancestor descendant` * [child](http://dev.w3.org/csswg/selectors4/#child-combinators): `parent > child` * [following sibling](http://dev.w3.org/csswg/selectors4/#general-sibling-combinators): `node ~ sibling` * [adjacent sibling](http://dev.w3.org/csswg/selectors4/#adjacent-sibling-combinators): `node + adjacent` * [negation](http://dev.w3.org/csswg/selectors4/#negation-pseudo): `:not(ForStatement)` * [has](https://drafts.csswg.org/selectors-4/#has-pseudo): `:has(ForStatement)` * [matches-any](http://dev.w3.org/csswg/selectors4/#matches): `:matches([attr] > :first-child, :last-child)` * [subject indicator](http://dev.w3.org/csswg/selectors4/#subject): `!IfStatement > [name="foo"]` * class of AST node: `:statement`, `:expression`, `:declaration`, `:function`, or `:pattern` [](https://travis-ci.org/estools/esquery) [](https://travis-ci.org/isaacs/rimraf) [](https://david-dm.org/isaacs/rimraf) [](https://david-dm.org/isaacs/rimraf#info=devDependencies) The [UNIX command](http://en.wikipedia.org/wiki/Rm_(Unix)) `rm -rf` for node. Install with `npm install rimraf`, or just drop rimraf.js somewhere. ## API `rimraf(f, [opts], callback)` The first parameter will be interpreted as a globbing pattern for files. If you want to disable globbing you can do so with `opts.disableGlob` (defaults to `false`). This might be handy, for instance, if you have filenames that contain globbing wildcard characters. The callback will be called with an error if there is one. Certain errors are handled for you: * Windows: `EBUSY` and `ENOTEMPTY` - rimraf will back off a maximum of `opts.maxBusyTries` times before giving up, adding 100ms of wait between each attempt. The default `maxBusyTries` is 3. * `ENOENT` - If the file doesn't exist, rimraf will return successfully, since your desired outcome is already the case. * `EMFILE` - Since `readdir` requires opening a file descriptor, it's possible to hit `EMFILE` if too many file descriptors are in use. In the sync case, there's nothing to be done for this. But in the async case, rimraf will gradually back off with timeouts up to `opts.emfileWait` ms, which defaults to 1000. ## options * unlink, chmod, stat, lstat, rmdir, readdir, unlinkSync, chmodSync, statSync, lstatSync, rmdirSync, readdirSync In order to use a custom file system library, you can override specific fs functions on the options object. If any of these functions are present on the options object, then the supplied function will be used instead of the default fs method. Sync methods are only relevant for `rimraf.sync()`, of course. For example: ```javascript var myCustomFS = require('some-custom-fs') rimraf('some-thing', myCustomFS, callback) ``` * maxBusyTries If an `EBUSY`, `ENOTEMPTY`, or `EPERM` error code is encountered on Windows systems, then rimraf will retry with a linear backoff wait of 100ms longer on each try. The default maxBusyTries is 3. Only relevant for async usage. * emfileWait If an `EMFILE` error is encountered, then rimraf will retry repeatedly with a linear backoff of 1ms longer on each try, until the timeout counter hits this max. The default limit is 1000. If you repeatedly encounter `EMFILE` errors, then consider using [graceful-fs](http://npm.im/graceful-fs) in your program. Only relevant for async usage. * glob Set to `false` to disable [glob](http://npm.im/glob) pattern matching. Set to an object to pass options to the glob module. The default glob options are `{ nosort: true, silent: true }`. Glob version 6 is used in this module. Relevant for both sync and async usage. * disableGlob Set to any non-falsey value to disable globbing entirely. (Equivalent to setting `glob: false`.) ## rimraf.sync It can remove stuff synchronously, too. But that's not so good. Use the async API. It's better. ## CLI If installed with `npm install rimraf -g` it can be used as a global command `rimraf <path> [<path> ...]` which is useful for cross platform support. ## mkdirp If you need to create a directory recursively, check out [mkdirp](https://github.com/substack/node-mkdirp). ## Timezone support In order to provide support for timezones, without relying on the JavaScript host or any other time-zone aware environment, this library makes use of teh IANA Timezone Database directly: https://www.iana.org/time-zones The database files are parsed by the scripts in this folder, which emit AssemblyScript code which is used to process the various rules at runtime. <h1 align="center">Picomatch</h1> <p align="center"> <a href="https://npmjs.org/package/picomatch"> <img src="https://img.shields.io/npm/v/picomatch.svg" alt="version"> </a> <a href="https://github.com/micromatch/picomatch/actions?workflow=Tests"> <img src="https://github.com/micromatch/picomatch/workflows/Tests/badge.svg" alt="test status"> </a> <a href="https://coveralls.io/github/micromatch/picomatch"> <img src="https://img.shields.io/coveralls/github/micromatch/picomatch/master.svg" alt="coverage status"> </a> <a href="https://npmjs.org/package/picomatch"> <img src="https://img.shields.io/npm/dm/picomatch.svg" alt="downloads"> </a> </p> <br> <br> <p align="center"> <strong>Blazing fast and accurate glob matcher written in JavaScript.</strong></br> <em>No dependencies and full support for standard and extended Bash glob features, including braces, extglobs, POSIX brackets, and regular expressions.</em> </p> <br> <br> ## Why picomatch? * **Lightweight** - No dependencies * **Minimal** - Tiny API surface. Main export is a function that takes a glob pattern and returns a matcher function. * **Fast** - Loads in about 2ms (that's several times faster than a [single frame of a HD movie](http://www.endmemo.com/sconvert/framespersecondframespermillisecond.php) at 60fps) * **Performant** - Use the returned matcher function to speed up repeat matching (like when watching files) * **Accurate matching** - Using wildcards (`*` and `?`), globstars (`**`) for nested directories, [advanced globbing](#advanced-globbing) with extglobs, braces, and POSIX brackets, and support for escaping special characters with `\` or quotes. * **Well tested** - Thousands of unit tests See the [library comparison](#library-comparisons) to other libraries. <br> <br> ## Table of Contents <details><summary> Click to expand </summary> - [Install](#install) - [Usage](#usage) - [API](#api) * [picomatch](#picomatch) * [.test](#test) * [.matchBase](#matchbase) * [.isMatch](#ismatch) * [.parse](#parse) * [.scan](#scan) * [.compileRe](#compilere) * [.makeRe](#makere) * [.toRegex](#toregex) - [Options](#options) * [Picomatch options](#picomatch-options) * [Scan Options](#scan-options) * [Options Examples](#options-examples) - [Globbing features](#globbing-features) * [Basic globbing](#basic-globbing) * [Advanced globbing](#advanced-globbing) * [Braces](#braces) * [Matching special characters as literals](#matching-special-characters-as-literals) - [Library Comparisons](#library-comparisons) - [Benchmarks](#benchmarks) - [Philosophies](#philosophies) - [About](#about) * [Author](#author) * [License](#license) _(TOC generated by [verb](https://github.com/verbose/verb) using [markdown-toc](https://github.com/jonschlinkert/markdown-toc))_ </details> <br> <br> ## Install Install with [npm](https://www.npmjs.com/): ```sh npm install --save picomatch ``` <br> ## Usage The main export is a function that takes a glob pattern and an options object and returns a function for matching strings. ```js const pm = require('picomatch'); const isMatch = pm('*.js'); console.log(isMatch('abcd')); //=> false console.log(isMatch('a.js')); //=> true console.log(isMatch('a.md')); //=> false console.log(isMatch('a/b.js')); //=> false ``` <br> ## API ### [picomatch](lib/picomatch.js#L32) Creates a matcher function from one or more glob patterns. The returned function takes a string to match as its first argument, and returns true if the string is a match. The returned matcher function also takes a boolean as the second argument that, when true, returns an object with additional information. **Params** * `globs` **{String|Array}**: One or more glob patterns. * `options` **{Object=}** * `returns` **{Function=}**: Returns a matcher function. **Example** ```js const picomatch = require('picomatch'); // picomatch(glob[, options]); const isMatch = picomatch('*.!(*a)'); console.log(isMatch('a.a')); //=> false console.log(isMatch('a.b')); //=> true ``` ### [.test](lib/picomatch.js#L117) Test `input` with the given `regex`. This is used by the main `picomatch()` function to test the input string. **Params** * `input` **{String}**: String to test. * `regex` **{RegExp}** * `returns` **{Object}**: Returns an object with matching info. **Example** ```js const picomatch = require('picomatch'); // picomatch.test(input, regex[, options]); console.log(picomatch.test('foo/bar', /^(?:([^/]*?)\/([^/]*?))$/)); // { isMatch: true, match: [ 'foo/', 'foo', 'bar' ], output: 'foo/bar' } ``` ### [.matchBase](lib/picomatch.js#L161) Match the basename of a filepath. **Params** * `input` **{String}**: String to test. * `glob` **{RegExp|String}**: Glob pattern or regex created by [.makeRe](#makeRe). * `returns` **{Boolean}** **Example** ```js const picomatch = require('picomatch'); // picomatch.matchBase(input, glob[, options]); console.log(picomatch.matchBase('foo/bar.js', '*.js'); // true ``` ### [.isMatch](lib/picomatch.js#L183) Returns true if **any** of the given glob `patterns` match the specified `string`. **Params** * **{String|Array}**: str The string to test. * **{String|Array}**: patterns One or more glob patterns to use for matching. * **{Object}**: See available [options](#options). * `returns` **{Boolean}**: Returns true if any patterns match `str` **Example** ```js const picomatch = require('picomatch'); // picomatch.isMatch(string, patterns[, options]); console.log(picomatch.isMatch('a.a', ['b.*', '*.a'])); //=> true console.log(picomatch.isMatch('a.a', 'b.*')); //=> false ``` ### [.parse](lib/picomatch.js#L199) Parse a glob pattern to create the source string for a regular expression. **Params** * `pattern` **{String}** * `options` **{Object}** * `returns` **{Object}**: Returns an object with useful properties and output to be used as a regex source string. **Example** ```js const picomatch = require('picomatch'); const result = picomatch.parse(pattern[, options]); ``` ### [.scan](lib/picomatch.js#L231) Scan a glob pattern to separate the pattern into segments. **Params** * `input` **{String}**: Glob pattern to scan. * `options` **{Object}** * `returns` **{Object}**: Returns an object with **Example** ```js const picomatch = require('picomatch'); // picomatch.scan(input[, options]); const result = picomatch.scan('!./foo/*.js'); console.log(result); { prefix: '!./', input: '!./foo/*.js', start: 3, base: 'foo', glob: '*.js', isBrace: false, isBracket: false, isGlob: true, isExtglob: false, isGlobstar: false, negated: true } ``` ### [.compileRe](lib/picomatch.js#L245) Compile a regular expression from the `state` object returned by the [parse()](#parse) method. **Params** * `state` **{Object}** * `options` **{Object}** * `returnOutput` **{Boolean}**: Intended for implementors, this argument allows you to return the raw output from the parser. * `returnState` **{Boolean}**: Adds the state to a `state` property on the returned regex. Useful for implementors and debugging. * `returns` **{RegExp}** ### [.makeRe](lib/picomatch.js#L286) Create a regular expression from a parsed glob pattern. **Params** * `state` **{String}**: The object returned from the `.parse` method. * `options` **{Object}** * `returnOutput` **{Boolean}**: Implementors may use this argument to return the compiled output, instead of a regular expression. This is not exposed on the options to prevent end-users from mutating the result. * `returnState` **{Boolean}**: Implementors may use this argument to return the state from the parsed glob with the returned regular expression. * `returns` **{RegExp}**: Returns a regex created from the given pattern. **Example** ```js const picomatch = require('picomatch'); const state = picomatch.parse('*.js'); // picomatch.compileRe(state[, options]); console.log(picomatch.compileRe(state)); //=> /^(?:(?!\.)(?=.)[^/]*?\.js)$/ ``` ### [.toRegex](lib/picomatch.js#L321) Create a regular expression from the given regex source string. **Params** * `source` **{String}**: Regular expression source string. * `options` **{Object}** * `returns` **{RegExp}** **Example** ```js const picomatch = require('picomatch'); // picomatch.toRegex(source[, options]); const { output } = picomatch.parse('*.js'); console.log(picomatch.toRegex(output)); //=> /^(?:(?!\.)(?=.)[^/]*?\.js)$/ ``` <br> ## Options ### Picomatch options The following options may be used with the main `picomatch()` function or any of the methods on the picomatch API. | **Option** | **Type** | **Default value** | **Description** | | --- | --- | --- | --- | | `basename` | `boolean` | `false` | If set, then patterns without slashes will be matched against the basename of the path if it contains slashes. For example, `a?b` would match the path `/xyz/123/acb`, but not `/xyz/acb/123`. | | `bash` | `boolean` | `false` | Follow bash matching rules more strictly - disallows backslashes as escape characters, and treats single stars as globstars (`**`). | | `capture` | `boolean` | `undefined` | Return regex matches in supporting methods. | | `contains` | `boolean` | `undefined` | Allows glob to match any part of the given string(s). | | `cwd` | `string` | `process.cwd()` | Current working directory. Used by `picomatch.split()` | | `debug` | `boolean` | `undefined` | Debug regular expressions when an error is thrown. | | `dot` | `boolean` | `false` | Enable dotfile matching. By default, dotfiles are ignored unless a `.` is explicitly defined in the pattern, or `options.dot` is true | | `expandRange` | `function` | `undefined` | Custom function for expanding ranges in brace patterns, such as `{a..z}`. The function receives the range values as two arguments, and it must return a string to be used in the generated regex. It's recommended that returned strings be wrapped in parentheses. | | `failglob` | `boolean` | `false` | Throws an error if no matches are found. Based on the bash option of the same name. | | `fastpaths` | `boolean` | `true` | To speed up processing, full parsing is skipped for a handful common glob patterns. Disable this behavior by setting this option to `false`. | | `flags` | `boolean` | `undefined` | Regex flags to use in the generated regex. If defined, the `nocase` option will be overridden. | | [format](#optionsformat) | `function` | `undefined` | Custom function for formatting the returned string. This is useful for removing leading slashes, converting Windows paths to Posix paths, etc. | | `ignore` | `array\|string` | `undefined` | One or more glob patterns for excluding strings that should not be matched from the result. | | `keepQuotes` | `boolean` | `false` | Retain quotes in the generated regex, since quotes may also be used as an alternative to backslashes. | | `literalBrackets` | `boolean` | `undefined` | When `true`, brackets in the glob pattern will be escaped so that only literal brackets will be matched. | | `lookbehinds` | `boolean` | `true` | Support regex positive and negative lookbehinds. Note that you must be using Node 8.1.10 or higher to enable regex lookbehinds. | | `matchBase` | `boolean` | `false` | Alias for `basename` | | `maxLength` | `boolean` | `65536` | Limit the max length of the input string. An error is thrown if the input string is longer than this value. | | `nobrace` | `boolean` | `false` | Disable brace matching, so that `{a,b}` and `{1..3}` would be treated as literal characters. | | `nobracket` | `boolean` | `undefined` | Disable matching with regex brackets. | | `nocase` | `boolean` | `false` | Make matching case-insensitive. Equivalent to the regex `i` flag. Note that this option is overridden by the `flags` option. | | `nodupes` | `boolean` | `true` | Deprecated, use `nounique` instead. This option will be removed in a future major release. By default duplicates are removed. Disable uniquification by setting this option to false. | | `noext` | `boolean` | `false` | Alias for `noextglob` | | `noextglob` | `boolean` | `false` | Disable support for matching with extglobs (like `+(a\|b)`) | | `noglobstar` | `boolean` | `false` | Disable support for matching nested directories with globstars (`**`) | | `nonegate` | `boolean` | `false` | Disable support for negating with leading `!` | | `noquantifiers` | `boolean` | `false` | Disable support for regex quantifiers (like `a{1,2}`) and treat them as brace patterns to be expanded. | | [onIgnore](#optionsonIgnore) | `function` | `undefined` | Function to be called on ignored items. | | [onMatch](#optionsonMatch) | `function` | `undefined` | Function to be called on matched items. | | [onResult](#optionsonResult) | `function` | `undefined` | Function to be called on all items, regardless of whether or not they are matched or ignored. | | `posix` | `boolean` | `false` | Support POSIX character classes ("posix brackets"). | | `posixSlashes` | `boolean` | `undefined` | Convert all slashes in file paths to forward slashes. This does not convert slashes in the glob pattern itself | | `prepend` | `boolean` | `undefined` | String to prepend to the generated regex used for matching. | | `regex` | `boolean` | `false` | Use regular expression rules for `+` (instead of matching literal `+`), and for stars that follow closing parentheses or brackets (as in `)*` and `]*`). | | `strictBrackets` | `boolean` | `undefined` | Throw an error if brackets, braces, or parens are imbalanced. | | `strictSlashes` | `boolean` | `undefined` | When true, picomatch won't match trailing slashes with single stars. | | `unescape` | `boolean` | `undefined` | Remove backslashes preceding escaped characters in the glob pattern. By default, backslashes are retained. | | `unixify` | `boolean` | `undefined` | Alias for `posixSlashes`, for backwards compatibility. | ### Scan Options In addition to the main [picomatch options](#picomatch-options), the following options may also be used with the [.scan](#scan) method. | **Option** | **Type** | **Default value** | **Description** | | --- | --- | --- | --- | | `tokens` | `boolean` | `false` | When `true`, the returned object will include an array of tokens (objects), representing each path "segment" in the scanned glob pattern | | `parts` | `boolean` | `false` | When `true`, the returned object will include an array of strings representing each path "segment" in the scanned glob pattern. This is automatically enabled when `options.tokens` is true | **Example** ```js const picomatch = require('picomatch'); const result = picomatch.scan('!./foo/*.js', { tokens: true }); console.log(result); // { // prefix: '!./', // input: '!./foo/*.js', // start: 3, // base: 'foo', // glob: '*.js', // isBrace: false, // isBracket: false, // isGlob: true, // isExtglob: false, // isGlobstar: false, // negated: true, // maxDepth: 2, // tokens: [ // { value: '!./', depth: 0, isGlob: false, negated: true, isPrefix: true }, // { value: 'foo', depth: 1, isGlob: false }, // { value: '*.js', depth: 1, isGlob: true } // ], // slashes: [ 2, 6 ], // parts: [ 'foo', '*.js' ] // } ``` <br> ### Options Examples #### options.expandRange **Type**: `function` **Default**: `undefined` Custom function for expanding ranges in brace patterns. The [fill-range](https://github.com/jonschlinkert/fill-range) library is ideal for this purpose, or you can use custom code to do whatever you need. **Example** The following example shows how to create a glob that matches a folder ```js const fill = require('fill-range'); const regex = pm.makeRe('foo/{01..25}/bar', { expandRange(a, b) { return `(${fill(a, b, { toRegex: true })})`; } }); console.log(regex); //=> /^(?:foo\/((?:0[1-9]|1[0-9]|2[0-5]))\/bar)$/ console.log(regex.test('foo/00/bar')) // false console.log(regex.test('foo/01/bar')) // true console.log(regex.test('foo/10/bar')) // true console.log(regex.test('foo/22/bar')) // true console.log(regex.test('foo/25/bar')) // true console.log(regex.test('foo/26/bar')) // false ``` #### options.format **Type**: `function` **Default**: `undefined` Custom function for formatting strings before they're matched. **Example** ```js // strip leading './' from strings const format = str => str.replace(/^\.\//, ''); const isMatch = picomatch('foo/*.js', { format }); console.log(isMatch('./foo/bar.js')); //=> true ``` #### options.onMatch ```js const onMatch = ({ glob, regex, input, output }) => { console.log({ glob, regex, input, output }); }; const isMatch = picomatch('*', { onMatch }); isMatch('foo'); isMatch('bar'); isMatch('baz'); ``` #### options.onIgnore ```js const onIgnore = ({ glob, regex, input, output }) => { console.log({ glob, regex, input, output }); }; const isMatch = picomatch('*', { onIgnore, ignore: 'f*' }); isMatch('foo'); isMatch('bar'); isMatch('baz'); ``` #### options.onResult ```js const onResult = ({ glob, regex, input, output }) => { console.log({ glob, regex, input, output }); }; const isMatch = picomatch('*', { onResult, ignore: 'f*' }); isMatch('foo'); isMatch('bar'); isMatch('baz'); ``` <br> <br> ## Globbing features * [Basic globbing](#basic-globbing) (Wildcard matching) * [Advanced globbing](#advanced-globbing) (extglobs, posix brackets, brace matching) ### Basic globbing | **Character** | **Description** | | --- | --- | | `*` | Matches any character zero or more times, excluding path separators. Does _not match_ path separators or hidden files or directories ("dotfiles"), unless explicitly enabled by setting the `dot` option to `true`. | | `**` | Matches any character zero or more times, including path separators. Note that `**` will only match path separators (`/`, and `\\` on Windows) when they are the only characters in a path segment. Thus, `foo**/bar` is equivalent to `foo*/bar`, and `foo/a**b/bar` is equivalent to `foo/a*b/bar`, and _more than two_ consecutive stars in a glob path segment are regarded as _a single star_. Thus, `foo/***/bar` is equivalent to `foo/*/bar`. | | `?` | Matches any character excluding path separators one time. Does _not match_ path separators or leading dots. | | `[abc]` | Matches any characters inside the brackets. For example, `[abc]` would match the characters `a`, `b` or `c`, and nothing else. | #### Matching behavior vs. Bash Picomatch's matching features and expected results in unit tests are based on Bash's unit tests and the Bash 4.3 specification, with the following exceptions: * Bash will match `foo/bar/baz` with `*`. Picomatch only matches nested directories with `**`. * Bash greedily matches with negated extglobs. For example, Bash 4.3 says that `!(foo)*` should match `foo` and `foobar`, since the trailing `*` bracktracks to match the preceding pattern. This is very memory-inefficient, and IMHO, also incorrect. Picomatch would return `false` for both `foo` and `foobar`. <br> ### Advanced globbing * [extglobs](#extglobs) * [POSIX brackets](#posix-brackets) * [Braces](#brace-expansion) #### Extglobs | **Pattern** | **Description** | | --- | --- | | `@(pattern)` | Match _only one_ consecutive occurrence of `pattern` | | `*(pattern)` | Match _zero or more_ consecutive occurrences of `pattern` | | `+(pattern)` | Match _one or more_ consecutive occurrences of `pattern` | | `?(pattern)` | Match _zero or **one**_ consecutive occurrences of `pattern` | | `!(pattern)` | Match _anything but_ `pattern` | **Examples** ```js const pm = require('picomatch'); // *(pattern) matches ZERO or more of "pattern" console.log(pm.isMatch('a', 'a*(z)')); // true console.log(pm.isMatch('az', 'a*(z)')); // true console.log(pm.isMatch('azzz', 'a*(z)')); // true // +(pattern) matches ONE or more of "pattern" console.log(pm.isMatch('a', 'a*(z)')); // true console.log(pm.isMatch('az', 'a*(z)')); // true console.log(pm.isMatch('azzz', 'a*(z)')); // true // supports multiple extglobs console.log(pm.isMatch('foo.bar', '!(foo).!(bar)')); // false // supports nested extglobs console.log(pm.isMatch('foo.bar', '!(!(foo)).!(!(bar))')); // true ``` #### POSIX brackets POSIX classes are disabled by default. Enable this feature by setting the `posix` option to true. **Enable POSIX bracket support** ```js console.log(pm.makeRe('[[:word:]]+', { posix: true })); //=> /^(?:(?=.)[A-Za-z0-9_]+\/?)$/ ``` **Supported POSIX classes** The following named POSIX bracket expressions are supported: * `[:alnum:]` - Alphanumeric characters, equ `[a-zA-Z0-9]` * `[:alpha:]` - Alphabetical characters, equivalent to `[a-zA-Z]`. * `[:ascii:]` - ASCII characters, equivalent to `[\\x00-\\x7F]`. * `[:blank:]` - Space and tab characters, equivalent to `[ \\t]`. * `[:cntrl:]` - Control characters, equivalent to `[\\x00-\\x1F\\x7F]`. * `[:digit:]` - Numerical digits, equivalent to `[0-9]`. * `[:graph:]` - Graph characters, equivalent to `[\\x21-\\x7E]`. * `[:lower:]` - Lowercase letters, equivalent to `[a-z]`. * `[:print:]` - Print characters, equivalent to `[\\x20-\\x7E ]`. * `[:punct:]` - Punctuation and symbols, equivalent to `[\\-!"#$%&\'()\\*+,./:;<=>?@[\\]^_`{|}~]`. * `[:space:]` - Extended space characters, equivalent to `[ \\t\\r\\n\\v\\f]`. * `[:upper:]` - Uppercase letters, equivalent to `[A-Z]`. * `[:word:]` - Word characters (letters, numbers and underscores), equivalent to `[A-Za-z0-9_]`. * `[:xdigit:]` - Hexadecimal digits, equivalent to `[A-Fa-f0-9]`. See the [Bash Reference Manual](https://www.gnu.org/software/bash/manual/html_node/Pattern-Matching.html) for more information. ### Braces Picomatch does not do brace expansion. For [brace expansion](https://www.gnu.org/software/bash/manual/html_node/Brace-Expansion.html) and advanced matching with braces, use [micromatch](https://github.com/micromatch/micromatch) instead. Picomatch has very basic support for braces. ### Matching special characters as literals If you wish to match the following special characters in a filepath, and you want to use these characters in your glob pattern, they must be escaped with backslashes or quotes: **Special Characters** Some characters that are used for matching in regular expressions are also regarded as valid file path characters on some platforms. To match any of the following characters as literals: `$^*+?()[] Examples: ```js console.log(pm.makeRe('foo/bar \\(1\\)')); console.log(pm.makeRe('foo/bar \\(1\\)')); ``` <br> <br> ## Library Comparisons The following table shows which features are supported by [minimatch](https://github.com/isaacs/minimatch), [micromatch](https://github.com/micromatch/micromatch), [picomatch](https://github.com/micromatch/picomatch), [nanomatch](https://github.com/micromatch/nanomatch), [extglob](https://github.com/micromatch/extglob), [braces](https://github.com/micromatch/braces), and [expand-brackets](https://github.com/micromatch/expand-brackets). | **Feature** | `minimatch` | `micromatch` | `picomatch` | `nanomatch` | `extglob` | `braces` | `expand-brackets` | | --- | --- | --- | --- | --- | --- | --- | --- | | Wildcard matching (`*?+`) | ✔ | ✔ | ✔ | ✔ | - | - | - | | Advancing globbing | ✔ | ✔ | ✔ | - | - | - | - | | Brace _matching_ | ✔ | ✔ | ✔ | - | - | ✔ | - | | Brace _expansion_ | ✔ | ✔ | - | - | - | ✔ | - | | Extglobs | partial | ✔ | ✔ | - | ✔ | - | - | | Posix brackets | - | ✔ | ✔ | - | - | - | ✔ | | Regular expression syntax | - | ✔ | ✔ | ✔ | ✔ | - | ✔ | | File system operations | - | - | - | - | - | - | - | <br> <br> ## Benchmarks Performance comparison of picomatch and minimatch. ``` # .makeRe star picomatch x 1,993,050 ops/sec ±0.51% (91 runs sampled) minimatch x 627,206 ops/sec ±1.96% (87 runs sampled)) # .makeRe star; dot=true picomatch x 1,436,640 ops/sec ±0.62% (91 runs sampled) minimatch x 525,876 ops/sec ±0.60% (88 runs sampled) # .makeRe globstar picomatch x 1,592,742 ops/sec ±0.42% (90 runs sampled) minimatch x 962,043 ops/sec ±1.76% (91 runs sampled)d) # .makeRe globstars picomatch x 1,615,199 ops/sec ±0.35% (94 runs sampled) minimatch x 477,179 ops/sec ±1.33% (91 runs sampled) # .makeRe with leading star picomatch x 1,220,856 ops/sec ±0.40% (92 runs sampled) minimatch x 453,564 ops/sec ±1.43% (94 runs sampled) # .makeRe - basic braces picomatch x 392,067 ops/sec ±0.70% (90 runs sampled) minimatch x 99,532 ops/sec ±2.03% (87 runs sampled)) ``` <br> <br> ## Philosophies The goal of this library is to be blazing fast, without compromising on accuracy. **Accuracy** The number one of goal of this library is accuracy. However, it's not unusual for different glob implementations to have different rules for matching behavior, even with simple wildcard matching. It gets increasingly more complicated when combinations of different features are combined, like when extglobs are combined with globstars, braces, slashes, and so on: `!(**/{a,b,*/c})`. Thus, given that there is no canonical glob specification to use as a single source of truth when differences of opinion arise regarding behavior, sometimes we have to implement our best judgement and rely on feedback from users to make improvements. **Performance** Although this library performs well in benchmarks, and in most cases it's faster than other popular libraries we benchmarked against, we will always choose accuracy over performance. It's not helpful to anyone if our library is faster at returning the wrong answer. <br> <br> ## About <details> <summary><strong>Contributing</strong></summary> Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). Please read the [contributing guide](.github/contributing.md) for advice on opening issues, pull requests, and coding standards. </details> <details> <summary><strong>Running Tests</strong></summary> Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh npm install && npm test ``` </details> <details> <summary><strong>Building docs</strong></summary> _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh npm install -g verbose/verb#dev verb-generate-readme && verb ``` </details> ### Author **Jon Schlinkert** * [GitHub Profile](https://github.com/jonschlinkert) * [Twitter Profile](https://twitter.com/jonschlinkert) * [LinkedIn Profile](https://linkedin.com/in/jonschlinkert) ### License Copyright © 2017-present, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT License](LICENSE). # jsdiff [](http://travis-ci.org/kpdecker/jsdiff) [](https://saucelabs.com/u/jsdiff) A javascript text differencing implementation. Based on the algorithm proposed in ["An O(ND) Difference Algorithm and its Variations" (Myers, 1986)](http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.4.6927). ## Installation ```bash npm install diff --save ``` ## API * `Diff.diffChars(oldStr, newStr[, options])` - diffs two blocks of text, comparing character by character. Returns a list of change objects (See below). Options * `ignoreCase`: `true` to ignore casing difference. Defaults to `false`. * `Diff.diffWords(oldStr, newStr[, options])` - diffs two blocks of text, comparing word by word, ignoring whitespace. Returns a list of change objects (See below). Options * `ignoreCase`: Same as in `diffChars`. * `Diff.diffWordsWithSpace(oldStr, newStr[, options])` - diffs two blocks of text, comparing word by word, treating whitespace as significant. Returns a list of change objects (See below). * `Diff.diffLines(oldStr, newStr[, options])` - diffs two blocks of text, comparing line by line. Options * `ignoreWhitespace`: `true` to ignore leading and trailing whitespace. This is the same as `diffTrimmedLines` * `newlineIsToken`: `true` to treat newline characters as separate tokens. This allows for changes to the newline structure to occur independently of the line content and to be treated as such. In general this is the more human friendly form of `diffLines` and `diffLines` is better suited for patches and other computer friendly output. Returns a list of change objects (See below). * `Diff.diffTrimmedLines(oldStr, newStr[, options])` - diffs two blocks of text, comparing line by line, ignoring leading and trailing whitespace. Returns a list of change objects (See below). * `Diff.diffSentences(oldStr, newStr[, options])` - diffs two blocks of text, comparing sentence by sentence. Returns a list of change objects (See below). * `Diff.diffCss(oldStr, newStr[, options])` - diffs two blocks of text, comparing CSS tokens. Returns a list of change objects (See below). * `Diff.diffJson(oldObj, newObj[, options])` - diffs two JSON objects, comparing the fields defined on each. The order of fields, etc does not matter in this comparison. Returns a list of change objects (See below). * `Diff.diffArrays(oldArr, newArr[, options])` - diffs two arrays, comparing each item for strict equality (===). Options * `comparator`: `function(left, right)` for custom equality checks Returns a list of change objects (See below). * `Diff.createTwoFilesPatch(oldFileName, newFileName, oldStr, newStr, oldHeader, newHeader)` - creates a unified diff patch. Parameters: * `oldFileName` : String to be output in the filename section of the patch for the removals * `newFileName` : String to be output in the filename section of the patch for the additions * `oldStr` : Original string value * `newStr` : New string value * `oldHeader` : Additional information to include in the old file header * `newHeader` : Additional information to include in the new file header * `options` : An object with options. Currently, only `context` is supported and describes how many lines of context should be included. * `Diff.createPatch(fileName, oldStr, newStr, oldHeader, newHeader)` - creates a unified diff patch. Just like Diff.createTwoFilesPatch, but with oldFileName being equal to newFileName. * `Diff.structuredPatch(oldFileName, newFileName, oldStr, newStr, oldHeader, newHeader, options)` - returns an object with an array of hunk objects. This method is similar to createTwoFilesPatch, but returns a data structure suitable for further processing. Parameters are the same as createTwoFilesPatch. The data structure returned may look like this: ```js { oldFileName: 'oldfile', newFileName: 'newfile', oldHeader: 'header1', newHeader: 'header2', hunks: [{ oldStart: 1, oldLines: 3, newStart: 1, newLines: 3, lines: [' line2', ' line3', '-line4', '+line5', '\\ No newline at end of file'], }] } ``` * `Diff.applyPatch(source, patch[, options])` - applies a unified diff patch. Return a string containing new version of provided data. `patch` may be a string diff or the output from the `parsePatch` or `structuredPatch` methods. The optional `options` object may have the following keys: - `fuzzFactor`: Number of lines that are allowed to differ before rejecting a patch. Defaults to 0. - `compareLine(lineNumber, line, operation, patchContent)`: Callback used to compare to given lines to determine if they should be considered equal when patching. Defaults to strict equality but may be overridden to provide fuzzier comparison. Should return false if the lines should be rejected. * `Diff.applyPatches(patch, options)` - applies one or more patches. This method will iterate over the contents of the patch and apply to data provided through callbacks. The general flow for each patch index is: - `options.loadFile(index, callback)` is called. The caller should then load the contents of the file and then pass that to the `callback(err, data)` callback. Passing an `err` will terminate further patch execution. - `options.patched(index, content, callback)` is called once the patch has been applied. `content` will be the return value from `applyPatch`. When it's ready, the caller should call `callback(err)` callback. Passing an `err` will terminate further patch execution. Once all patches have been applied or an error occurs, the `options.complete(err)` callback is made. * `Diff.parsePatch(diffStr)` - Parses a patch into structured data Return a JSON object representation of the a patch, suitable for use with the `applyPatch` method. This parses to the same structure returned by `Diff.structuredPatch`. * `convertChangesToXML(changes)` - converts a list of changes to a serialized XML format All methods above which accept the optional `callback` method will run in sync mode when that parameter is omitted and in async mode when supplied. This allows for larger diffs without blocking the event loop. This may be passed either directly as the final parameter or as the `callback` field in the `options` object. ### Change Objects Many of the methods above return change objects. These objects consist of the following fields: * `value`: Text content * `added`: True if the value was inserted into the new string * `removed`: True if the value was removed from the old string Note that some cases may omit a particular flag field. Comparison on the flag fields should always be done in a truthy or falsy manner. ## Examples Basic example in Node ```js require('colors'); const Diff = require('diff'); const one = 'beep boop'; const other = 'beep boob blah'; const diff = Diff.diffChars(one, other); diff.forEach((part) => { // green for additions, red for deletions // grey for common parts const color = part.added ? 'green' : part.removed ? 'red' : 'grey'; process.stderr.write(part.value[color]); }); console.log(); ``` Running the above program should yield <img src="images/node_example.png" alt="Node Example"> Basic example in a web page ```html <pre id="display"></pre> <script src="diff.js"></script> <script> const one = 'beep boop', other = 'beep boob blah', color = ''; let span = null; const diff = Diff.diffChars(one, other), display = document.getElementById('display'), fragment = document.createDocumentFragment(); diff.forEach((part) => { // green for additions, red for deletions // grey for common parts const color = part.added ? 'green' : part.removed ? 'red' : 'grey'; span = document.createElement('span'); span.style.color = color; span.appendChild(document .createTextNode(part.value)); fragment.appendChild(span); }); display.appendChild(fragment); </script> ``` Open the above .html file in a browser and you should see <img src="images/web_example.png" alt="Node Example"> **[Full online demo](http://kpdecker.github.com/jsdiff)** ## Compatibility [](https://saucelabs.com/u/jsdiff) jsdiff supports all ES3 environments with some known issues on IE8 and below. Under these browsers some diff algorithms such as word diff and others may fail due to lack of support for capturing groups in the `split` operation. ## License See [LICENSE](https://github.com/kpdecker/jsdiff/blob/master/LICENSE). binaryen.js =========== **binaryen.js** is a port of [Binaryen](https://github.com/WebAssembly/binaryen) to the Web, allowing you to generate [WebAssembly](https://webassembly.org) using a JavaScript API. <a href="https://github.com/AssemblyScript/binaryen.js/actions?query=workflow%3ABuild"><img src="https://img.shields.io/github/workflow/status/AssemblyScript/binaryen.js/Build/main?label=build&logo=github" alt="Build status" /></a> <a href="https://www.npmjs.com/package/binaryen"><img src="https://img.shields.io/npm/v/binaryen.svg?label=latest&color=007acc&logo=npm" alt="npm version" /></a> <a href="https://www.npmjs.com/package/binaryen"><img src="https://img.shields.io/npm/v/binaryen/nightly.svg?label=nightly&color=007acc&logo=npm" alt="npm nightly version" /></a> Usage ----- ``` $> npm install binaryen ``` ```js var binaryen = require("binaryen"); // Create a module with a single function var myModule = new binaryen.Module(); myModule.addFunction("add", binaryen.createType([ binaryen.i32, binaryen.i32 ]), binaryen.i32, [ binaryen.i32 ], myModule.block(null, [ myModule.local.set(2, myModule.i32.add( myModule.local.get(0, binaryen.i32), myModule.local.get(1, binaryen.i32) ) ), myModule.return( myModule.local.get(2, binaryen.i32) ) ]) ); myModule.addFunctionExport("add", "add"); // Optimize the module using default passes and levels myModule.optimize(); // Validate the module if (!myModule.validate()) throw new Error("validation error"); // Generate text format and binary var textData = myModule.emitText(); var wasmData = myModule.emitBinary(); // Example usage with the WebAssembly API var compiled = new WebAssembly.Module(wasmData); var instance = new WebAssembly.Instance(compiled, {}); console.log(instance.exports.add(41, 1)); ``` The buildbot also publishes nightly versions once a day if there have been changes. The latest nightly can be installed through ``` $> npm install binaryen@nightly ``` or you can use one of the [previous versions](https://github.com/AssemblyScript/binaryen.js/tags) instead if necessary. ### Usage with a CDN * From GitHub via [jsDelivr](https://www.jsdelivr.com):<br /> `https://cdn.jsdelivr.net/gh/AssemblyScript/binaryen.js@VERSION/index.js` * From npm via [jsDelivr](https://www.jsdelivr.com):<br /> `https://cdn.jsdelivr.net/npm/binaryen@VERSION/index.js` * From npm via [unpkg](https://unpkg.com):<br /> `https://unpkg.com/binaryen@VERSION/index.js` Replace `VERSION` with a [specific version](https://github.com/AssemblyScript/binaryen.js/releases) or omit it (not recommended in production) to use main/latest. API --- **Please note** that the Binaryen API is evolving fast and that definitions and documentation provided by the package tend to get out of sync despite our best efforts. It's a bot after all. If you rely on binaryen.js and spot an issue, please consider sending a PR our way by updating [index.d.ts](./index.d.ts) and [README.md](./README.md) to reflect the [current API](https://github.com/WebAssembly/binaryen/blob/main/src/js/binaryen.js-post.js). <!-- START doctoc generated TOC please keep comment here to allow auto update --> <!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE --> ### Contents - [Types](#types) - [Module construction](#module-construction) - [Module manipulation](#module-manipulation) - [Module validation](#module-validation) - [Module optimization](#module-optimization) - [Module creation](#module-creation) - [Expression construction](#expression-construction) - [Control flow](#control-flow) - [Variable accesses](#variable-accesses) - [Integer operations](#integer-operations) - [Floating point operations](#floating-point-operations) - [Datatype conversions](#datatype-conversions) - [Function calls](#function-calls) - [Linear memory accesses](#linear-memory-accesses) - [Host operations](#host-operations) - [Vector operations 🦄](#vector-operations-) - [Atomic memory accesses 🦄](#atomic-memory-accesses-) - [Atomic read-modify-write operations 🦄](#atomic-read-modify-write-operations-) - [Atomic wait and notify operations 🦄](#atomic-wait-and-notify-operations-) - [Sign extension operations 🦄](#sign-extension-operations-) - [Multi-value operations 🦄](#multi-value-operations-) - [Exception handling operations 🦄](#exception-handling-operations-) - [Reference types operations 🦄](#reference-types-operations-) - [Expression manipulation](#expression-manipulation) - [Relooper](#relooper) - [Source maps](#source-maps) - [Debugging](#debugging) <!-- END doctoc generated TOC please keep comment here to allow auto update --> [Future features](http://webassembly.org/docs/future-features/) 🦄 might not be supported by all runtimes. ### Types * **none**: `Type`<br /> The none type, e.g., `void`. * **i32**: `Type`<br /> 32-bit integer type. * **i64**: `Type`<br /> 64-bit integer type. * **f32**: `Type`<br /> 32-bit float type. * **f64**: `Type`<br /> 64-bit float (double) type. * **v128**: `Type`<br /> 128-bit vector type. 🦄 * **funcref**: `Type`<br /> A function reference. 🦄 * **anyref**: `Type`<br /> Any host reference. 🦄 * **nullref**: `Type`<br /> A null reference. 🦄 * **exnref**: `Type`<br /> An exception reference. 🦄 * **unreachable**: `Type`<br /> Special type indicating unreachable code when obtaining information about an expression. * **auto**: `Type`<br /> Special type used in **Module#block** exclusively. Lets the API figure out a block's result type automatically. * **createType**(types: `Type[]`): `Type`<br /> Creates a multi-value type from an array of types. * **expandType**(type: `Type`): `Type[]`<br /> Expands a multi-value type to an array of types. ### Module construction * new **Module**()<br /> Constructs a new module. * **parseText**(text: `string`): `Module`<br /> Creates a module from Binaryen's s-expression text format (not official stack-style text format). * **readBinary**(data: `Uint8Array`): `Module`<br /> Creates a module from binary data. ### Module manipulation * Module#**addFunction**(name: `string`, params: `Type`, results: `Type`, vars: `Type[]`, body: `ExpressionRef`): `FunctionRef`<br /> Adds a function. `vars` indicate additional locals, in the given order. * Module#**getFunction**(name: `string`): `FunctionRef`<br /> Gets a function, by name, * Module#**removeFunction**(name: `string`): `void`<br /> Removes a function, by name. * Module#**getNumFunctions**(): `number`<br /> Gets the number of functions within the module. * Module#**getFunctionByIndex**(index: `number`): `FunctionRef`<br /> Gets the function at the specified index. * Module#**addFunctionImport**(internalName: `string`, externalModuleName: `string`, externalBaseName: `string`, params: `Type`, results: `Type`): `void`<br /> Adds a function import. * Module#**addTableImport**(internalName: `string`, externalModuleName: `string`, externalBaseName: `string`): `void`<br /> Adds a table import. There's just one table for now, using name `"0"`. * Module#**addMemoryImport**(internalName: `string`, externalModuleName: `string`, externalBaseName: `string`): `void`<br /> Adds a memory import. There's just one memory for now, using name `"0"`. * Module#**addGlobalImport**(internalName: `string`, externalModuleName: `string`, externalBaseName: `string`, globalType: `Type`): `void`<br /> Adds a global variable import. Imported globals must be immutable. * Module#**addFunctionExport**(internalName: `string`, externalName: `string`): `ExportRef`<br /> Adds a function export. * Module#**addTableExport**(internalName: `string`, externalName: `string`): `ExportRef`<br /> Adds a table export. There's just one table for now, using name `"0"`. * Module#**addMemoryExport**(internalName: `string`, externalName: `string`): `ExportRef`<br /> Adds a memory export. There's just one memory for now, using name `"0"`. * Module#**addGlobalExport**(internalName: `string`, externalName: `string`): `ExportRef`<br /> Adds a global variable export. Exported globals must be immutable. * Module#**getNumExports**(): `number`<br /> Gets the number of exports witin the module. * Module#**getExportByIndex**(index: `number`): `ExportRef`<br /> Gets the export at the specified index. * Module#**removeExport**(externalName: `string`): `void`<br /> Removes an export, by external name. * Module#**addGlobal**(name: `string`, type: `Type`, mutable: `number`, value: `ExpressionRef`): `GlobalRef`<br /> Adds a global instance variable. * Module#**getGlobal**(name: `string`): `GlobalRef`<br /> Gets a global, by name, * Module#**removeGlobal**(name: `string`): `void`<br /> Removes a global, by name. * Module#**setFunctionTable**(initial: `number`, maximum: `number`, funcs: `string[]`, offset?: `ExpressionRef`): `void`<br /> Sets the contents of the function table. There's just one table for now, using name `"0"`. * Module#**getFunctionTable**(): `{ imported: boolean, segments: TableElement[] }`<br /> Gets the contents of the function table. * TableElement#**offset**: `ExpressionRef` * TableElement#**names**: `string[]` * Module#**setMemory**(initial: `number`, maximum: `number`, exportName: `string | null`, segments: `MemorySegment[]`, flags?: `number[]`, shared?: `boolean`): `void`<br /> Sets the memory. There's just one memory for now, using name `"0"`. Providing `exportName` also creates a memory export. * MemorySegment#**offset**: `ExpressionRef` * MemorySegment#**data**: `Uint8Array` * MemorySegment#**passive**: `boolean` * Module#**getNumMemorySegments**(): `number`<br /> Gets the number of memory segments within the module. * Module#**getMemorySegmentInfoByIndex**(index: `number`): `MemorySegmentInfo`<br /> Gets information about the memory segment at the specified index. * MemorySegmentInfo#**offset**: `number` * MemorySegmentInfo#**data**: `Uint8Array` * MemorySegmentInfo#**passive**: `boolean` * Module#**setStart**(start: `FunctionRef`): `void`<br /> Sets the start function. * Module#**getFeatures**(): `Features`<br /> Gets the WebAssembly features enabled for this module. Note that the return value may be a bitmask indicating multiple features. Possible feature flags are: * Features.**MVP**: `Features` * Features.**Atomics**: `Features` * Features.**BulkMemory**: `Features` * Features.**MutableGlobals**: `Features` * Features.**NontrappingFPToInt**: `Features` * Features.**SignExt**: `Features` * Features.**SIMD128**: `Features` * Features.**ExceptionHandling**: `Features` * Features.**TailCall**: `Features` * Features.**ReferenceTypes**: `Features` * Features.**Multivalue**: `Features` * Features.**All**: `Features` * Module#**setFeatures**(features: `Features`): `void`<br /> Sets the WebAssembly features enabled for this module. * Module#**addCustomSection**(name: `string`, contents: `Uint8Array`): `void`<br /> Adds a custom section to the binary. * Module#**autoDrop**(): `void`<br /> Enables automatic insertion of `drop` operations where needed. Lets you not worry about dropping when creating your code. * **getFunctionInfo**(ftype: `FunctionRef`: `FunctionInfo`<br /> Obtains information about a function. * FunctionInfo#**name**: `string` * FunctionInfo#**module**: `string | null` (if imported) * FunctionInfo#**base**: `string | null` (if imported) * FunctionInfo#**params**: `Type` * FunctionInfo#**results**: `Type` * FunctionInfo#**vars**: `Type` * FunctionInfo#**body**: `ExpressionRef` * **getGlobalInfo**(global: `GlobalRef`): `GlobalInfo`<br /> Obtains information about a global. * GlobalInfo#**name**: `string` * GlobalInfo#**module**: `string | null` (if imported) * GlobalInfo#**base**: `string | null` (if imported) * GlobalInfo#**type**: `Type` * GlobalInfo#**mutable**: `boolean` * GlobalInfo#**init**: `ExpressionRef` * **getExportInfo**(export_: `ExportRef`): `ExportInfo`<br /> Obtains information about an export. * ExportInfo#**kind**: `ExternalKind` * ExportInfo#**name**: `string` * ExportInfo#**value**: `string` Possible `ExternalKind` values are: * **ExternalFunction**: `ExternalKind` * **ExternalTable**: `ExternalKind` * **ExternalMemory**: `ExternalKind` * **ExternalGlobal**: `ExternalKind` * **ExternalEvent**: `ExternalKind` * **getEventInfo**(event: `EventRef`): `EventInfo`<br /> Obtains information about an event. * EventInfo#**name**: `string` * EventInfo#**module**: `string | null` (if imported) * EventInfo#**base**: `string | null` (if imported) * EventInfo#**attribute**: `number` * EventInfo#**params**: `Type` * EventInfo#**results**: `Type` * **getSideEffects**(expr: `ExpressionRef`, features: `FeatureFlags`): `SideEffects`<br /> Gets the side effects of the specified expression. * SideEffects.**None**: `SideEffects` * SideEffects.**Branches**: `SideEffects` * SideEffects.**Calls**: `SideEffects` * SideEffects.**ReadsLocal**: `SideEffects` * SideEffects.**WritesLocal**: `SideEffects` * SideEffects.**ReadsGlobal**: `SideEffects` * SideEffects.**WritesGlobal**: `SideEffects` * SideEffects.**ReadsMemory**: `SideEffects` * SideEffects.**WritesMemory**: `SideEffects` * SideEffects.**ImplicitTrap**: `SideEffects` * SideEffects.**IsAtomic**: `SideEffects` * SideEffects.**Throws**: `SideEffects` * SideEffects.**Any**: `SideEffects` ### Module validation * Module#**validate**(): `boolean`<br /> Validates the module. Returns `true` if valid, otherwise prints validation errors and returns `false`. ### Module optimization * Module#**optimize**(): `void`<br /> Optimizes the module using the default optimization passes. * Module#**optimizeFunction**(func: `FunctionRef | string`): `void`<br /> Optimizes a single function using the default optimization passes. * Module#**runPasses**(passes: `string[]`): `void`<br /> Runs the specified passes on the module. * Module#**runPassesOnFunction**(func: `FunctionRef | string`, passes: `string[]`): `void`<br /> Runs the specified passes on a single function. * **getOptimizeLevel**(): `number`<br /> Gets the currently set optimize level. `0`, `1`, `2` correspond to `-O0`, `-O1`, `-O2` (default), etc. * **setOptimizeLevel**(level: `number`): `void`<br /> Sets the optimization level to use. `0`, `1`, `2` correspond to `-O0`, `-O1`, `-O2` (default), etc. * **getShrinkLevel**(): `number`<br /> Gets the currently set shrink level. `0`, `1`, `2` correspond to `-O0`, `-Os` (default), `-Oz`. * **setShrinkLevel**(level: `number`): `void`<br /> Sets the shrink level to use. `0`, `1`, `2` correspond to `-O0`, `-Os` (default), `-Oz`. * **getDebugInfo**(): `boolean`<br /> Gets whether generating debug information is currently enabled or not. * **setDebugInfo**(on: `boolean`): `void`<br /> Enables or disables debug information in emitted binaries. * **getLowMemoryUnused**(): `boolean`<br /> Gets whether the low 1K of memory can be considered unused when optimizing. * **setLowMemoryUnused**(on: `boolean`): `void`<br /> Enables or disables whether the low 1K of memory can be considered unused when optimizing. * **getPassArgument**(key: `string`): `string | null`<br /> Gets the value of the specified arbitrary pass argument. * **setPassArgument**(key: `string`, value: `string | null`): `void`<br /> Sets the value of the specified arbitrary pass argument. Removes the respective argument if `value` is `null`. * **clearPassArguments**(): `void`<br /> Clears all arbitrary pass arguments. * **getAlwaysInlineMaxSize**(): `number`<br /> Gets the function size at which we always inline. * **setAlwaysInlineMaxSize**(size: `number`): `void`<br /> Sets the function size at which we always inline. * **getFlexibleInlineMaxSize**(): `number`<br /> Gets the function size which we inline when functions are lightweight. * **setFlexibleInlineMaxSize**(size: `number`): `void`<br /> Sets the function size which we inline when functions are lightweight. * **getOneCallerInlineMaxSize**(): `number`<br /> Gets the function size which we inline when there is only one caller. * **setOneCallerInlineMaxSize**(size: `number`): `void`<br /> Sets the function size which we inline when there is only one caller. ### Module creation * Module#**emitBinary**(): `Uint8Array`<br /> Returns the module in binary format. * Module#**emitBinary**(sourceMapUrl: `string | null`): `BinaryWithSourceMap`<br /> Returns the module in binary format with its source map. If `sourceMapUrl` is `null`, source map generation is skipped. * BinaryWithSourceMap#**binary**: `Uint8Array` * BinaryWithSourceMap#**sourceMap**: `string | null` * Module#**emitText**(): `string`<br /> Returns the module in Binaryen's s-expression text format (not official stack-style text format). * Module#**emitAsmjs**(): `string`<br /> Returns the [asm.js](http://asmjs.org/) representation of the module. * Module#**dispose**(): `void`<br /> Releases the resources held by the module once it isn't needed anymore. ### Expression construction #### [Control flow](http://webassembly.org/docs/semantics/#control-constructs-and-instructions) * Module#**block**(label: `string | null`, children: `ExpressionRef[]`, resultType?: `Type`): `ExpressionRef`<br /> Creates a block. `resultType` defaults to `none`. * Module#**if**(condition: `ExpressionRef`, ifTrue: `ExpressionRef`, ifFalse?: `ExpressionRef`): `ExpressionRef`<br /> Creates an if or if/else combination. * Module#**loop**(label: `string | null`, body: `ExpressionRef`): `ExpressionRef`<br /> Creates a loop. * Module#**br**(label: `string`, condition?: `ExpressionRef`, value?: `ExpressionRef`): `ExpressionRef`<br /> Creates a branch (br) to a label. * Module#**switch**(labels: `string[]`, defaultLabel: `string`, condition: `ExpressionRef`, value?: `ExpressionRef`): `ExpressionRef`<br /> Creates a switch (br_table). * Module#**nop**(): `ExpressionRef`<br /> Creates a no-operation (nop) instruction. * Module#**return**(value?: `ExpressionRef`): `ExpressionRef` Creates a return. * Module#**unreachable**(): `ExpressionRef`<br /> Creates an [unreachable](http://webassembly.org/docs/semantics/#unreachable) instruction that will always trap. * Module#**drop**(value: `ExpressionRef`): `ExpressionRef`<br /> Creates a [drop](http://webassembly.org/docs/semantics/#type-parametric-operators) of a value. * Module#**select**(condition: `ExpressionRef`, ifTrue: `ExpressionRef`, ifFalse: `ExpressionRef`, type?: `Type`): `ExpressionRef`<br /> Creates a [select](http://webassembly.org/docs/semantics/#type-parametric-operators) of one of two values. #### [Variable accesses](http://webassembly.org/docs/semantics/#local-variables) * Module#**local.get**(index: `number`, type: `Type`): `ExpressionRef`<br /> Creates a local.get for the local at the specified index. Note that we must specify the type here as we may not have created the local being accessed yet. * Module#**local.set**(index: `number`, value: `ExpressionRef`): `ExpressionRef`<br /> Creates a local.set for the local at the specified index. * Module#**local.tee**(index: `number`, value: `ExpressionRef`, type: `Type`): `ExpressionRef`<br /> Creates a local.tee for the local at the specified index. A tee differs from a set in that the value remains on the stack. Note that we must specify the type here as we may not have created the local being accessed yet. * Module#**global.get**(name: `string`, type: `Type`): `ExpressionRef`<br /> Creates a global.get for the global with the specified name. Note that we must specify the type here as we may not have created the global being accessed yet. * Module#**global.set**(name: `string`, value: `ExpressionRef`): `ExpressionRef`<br /> Creates a global.set for the global with the specified name. #### [Integer operations](http://webassembly.org/docs/semantics/#32-bit-integer-operators) * Module#i32.**const**(value: `number`): `ExpressionRef` * Module#i32.**clz**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**ctz**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**popcnt**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**eqz**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**div_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**div_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**rem_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**rem_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**and**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**or**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**xor**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**shl**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**shr_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**shr_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**rotl**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**rotr**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**lt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**le_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**le_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**gt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**gt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**ge_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**ge_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` > * Module#i64.**const**(low: `number`, high: `number`): `ExpressionRef` * Module#i64.**clz**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**ctz**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**popcnt**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**eqz**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**div_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**div_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**rem_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**rem_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**and**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**or**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**xor**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**shl**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**shr_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**shr_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**rotl**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**rotr**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**lt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**le_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**le_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**gt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**gt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**ge_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**ge_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` #### [Floating point operations](http://webassembly.org/docs/semantics/#floating-point-operators) * Module#f32.**const**(value: `number`): `ExpressionRef` * Module#f32.**const_bits**(value: `number`): `ExpressionRef` * Module#f32.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**abs**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**ceil**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**floor**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**trunc**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**nearest**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**sqrt**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**div**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**copysign**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**min**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**max**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**lt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**le**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**gt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**ge**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` > * Module#f64.**const**(value: `number`): `ExpressionRef` * Module#f64.**const_bits**(value: `number`): `ExpressionRef` * Module#f64.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**abs**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**ceil**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**floor**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**trunc**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**nearest**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**sqrt**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**div**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**copysign**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**min**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**max**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**lt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**le**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**gt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**ge**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` #### [Datatype conversions](http://webassembly.org/docs/semantics/#datatype-conversions-truncations-reinterpretations-promotions-and-demotions) * Module#i32.**trunc_s.f32**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**trunc_s.f64**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**trunc_u.f32**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**trunc_u.f64**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**reinterpret**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**wrap**(value: `ExpressionRef`): `ExpressionRef` > * Module#i64.**trunc_s.f32**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**trunc_s.f64**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**trunc_u.f32**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**trunc_u.f64**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**reinterpret**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**extend_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**extend_u**(value: `ExpressionRef`): `ExpressionRef` > * Module#f32.**reinterpret**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**convert_s.i32**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**convert_s.i64**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**convert_u.i32**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**convert_u.i64**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**demote**(value: `ExpressionRef`): `ExpressionRef` > * Module#f64.**reinterpret**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**convert_s.i32**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**convert_s.i64**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**convert_u.i32**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**convert_u.i64**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**promote**(value: `ExpressionRef`): `ExpressionRef` #### [Function calls](http://webassembly.org/docs/semantics/#calls) * Module#**call**(name: `string`, operands: `ExpressionRef[]`, returnType: `Type`): `ExpressionRef` Creates a call to a function. Note that we must specify the return type here as we may not have created the function being called yet. * Module#**return_call**(name: `string`, operands: `ExpressionRef[]`, returnType: `Type`): `ExpressionRef`<br /> Like **call**, but creates a tail-call. 🦄 * Module#**call_indirect**(target: `ExpressionRef`, operands: `ExpressionRef[]`, params: `Type`, results: `Type`): `ExpressionRef`<br /> Similar to **call**, but calls indirectly, i.e., via a function pointer, so an expression replaces the name as the called value. * Module#**return_call_indirect**(target: `ExpressionRef`, operands: `ExpressionRef[]`, params: `Type`, results: `Type`): `ExpressionRef`<br /> Like **call_indirect**, but creates a tail-call. 🦄 #### [Linear memory accesses](http://webassembly.org/docs/semantics/#linear-memory-accesses) * Module#i32.**load**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**load8_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**load8_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**load16_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**load16_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**store**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**store8**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**store16**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef`<br /> > * Module#i64.**load**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load8_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load8_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load16_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load16_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load32_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load32_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**store**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**store8**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**store16**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**store32**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` > * Module#f32.**load**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#f32.**store**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` > * Module#f64.**load**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#f64.**store**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` #### [Host operations](http://webassembly.org/docs/semantics/#resizing) * Module#**memory.size**(): `ExpressionRef` * Module#**memory.grow**(value: `number`): `ExpressionRef` #### [Vector operations](https://github.com/WebAssembly/simd/blob/main/proposals/simd/SIMD.md) 🦄 * Module#v128.**const**(bytes: `Uint8Array`): `ExpressionRef` * Module#v128.**load**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#v128.**store**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#v128.**not**(value: `ExpressionRef`): `ExpressionRef` * Module#v128.**and**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#v128.**or**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#v128.**xor**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#v128.**andnot**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#v128.**bitselect**(left: `ExpressionRef`, right: `ExpressionRef`, cond: `ExpressionRef`): `ExpressionRef` > * Module#i8x16.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**extract_lane_s**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i8x16.**extract_lane_u**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i8x16.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**lt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**gt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**gt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**le_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**ge_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**ge_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**any_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**all_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**shl**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**shr_s**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**shr_u**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**add_saturate_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**add_saturate_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**sub_saturate_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**sub_saturate_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**min_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**min_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**max_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**max_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**avgr_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**narrow_i16x8_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**narrow_i16x8_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` > * Module#i16x8.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**extract_lane_s**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i16x8.**extract_lane_u**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i16x8.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**lt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**gt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**gt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**le_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**ge_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**ge_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**any_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**all_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**shl**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**shr_s**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**shr_u**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**add_saturate_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**add_saturate_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**sub_saturate_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**sub_saturate_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**min_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**min_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**max_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**max_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**avgr_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**narrow_i32x4_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**narrow_i32x4_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**widen_low_i8x16_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**widen_high_i8x16_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**widen_low_i8x16_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**widen_high_i8x16_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**load8x8_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**load8x8_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#i32x4.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**extract_lane_s**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i32x4.**extract_lane_u**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i32x4.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**lt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**gt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**gt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**le_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**ge_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**ge_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**any_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**all_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**shl**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**shr_s**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**shr_u**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**min_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**min_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**max_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**max_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**dot_i16x8_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**trunc_sat_f32x4_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**trunc_sat_f32x4_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**widen_low_i16x8_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**widen_high_i16x8_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**widen_low_i16x8_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**widen_high_i16x8_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**load16x4_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**load16x4_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#i64x2.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**extract_lane_s**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i64x2.**extract_lane_u**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i64x2.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**any_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**all_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**shl**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**shr_s**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**shr_u**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**trunc_sat_f64x2_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**trunc_sat_f64x2_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**load32x2_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**load32x2_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#f32x4.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**extract_lane**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#f32x4.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**lt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**gt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**le**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**ge**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**abs**(value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**sqrt**(value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**qfma**(a: `ExpressionRef`, b: `ExpressionRef`, c: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**qfms**(a: `ExpressionRef`, b: `ExpressionRef`, c: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**div**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**min**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**max**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**convert_i32x4_s**(value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**convert_i32x4_u**(value: `ExpressionRef`): `ExpressionRef` > * Module#f64x2.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**extract_lane**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#f64x2.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**lt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**gt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**le**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**ge**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**abs**(value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**sqrt**(value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**qfma**(a: `ExpressionRef`, b: `ExpressionRef`, c: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**qfms**(a: `ExpressionRef`, b: `ExpressionRef`, c: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**div**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**min**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**max**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**convert_i64x2_s**(value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**convert_i64x2_u**(value: `ExpressionRef`): `ExpressionRef` > * Module#v8x16.**shuffle**(left: `ExpressionRef`, right: `ExpressionRef`, mask: `Uint8Array`): `ExpressionRef` * Module#v8x16.**swizzle**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#v8x16.**load_splat**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#v16x8.**load_splat**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#v32x4.**load_splat**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#v64x2.**load_splat**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` #### [Atomic memory accesses](https://github.com/WebAssembly/threads/blob/master/proposals/threads/Overview.md#atomic-memory-accesses) 🦄 * Module#i32.**atomic.load**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.load8_u**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.load16_u**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.store**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.store8**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.store16**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` > * Module#i64.**atomic.load**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.load8_u**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.load16_u**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.load32_u**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.store**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.store8**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.store16**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.store32**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` #### [Atomic read-modify-write operations](https://github.com/WebAssembly/threads/blob/master/proposals/threads/Overview.md#read-modify-write) 🦄 * Module#i32.**atomic.rmw.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` > * Module#i64.**atomic.rmw.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` #### [Atomic wait and notify operations](https://github.com/WebAssembly/threads/blob/master/proposals/threads/Overview.md#wait-and-notify-operators) 🦄 * Module#i32.**atomic.wait**(ptr: `ExpressionRef`, expected: `ExpressionRef`, timeout: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.wait**(ptr: `ExpressionRef`, expected: `ExpressionRef`, timeout: `ExpressionRef`): `ExpressionRef` * Module#**atomic.notify**(ptr: `ExpressionRef`, notifyCount: `ExpressionRef`): `ExpressionRef` * Module#**atomic.fence**(): `ExpressionRef` #### [Sign extension operations](https://github.com/WebAssembly/sign-extension-ops/blob/master/proposals/sign-extension-ops/Overview.md) 🦄 * Module#i32.**extend8_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**extend16_s**(value: `ExpressionRef`): `ExpressionRef` > * Module#i64.**extend8_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**extend16_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**extend32_s**(value: `ExpressionRef`): `ExpressionRef` #### [Multi-value operations](https://github.com/WebAssembly/multi-value/blob/master/proposals/multi-value/Overview.md) 🦄 Note that these are pseudo instructions enabling Binaryen to reason about multiple values on the stack. * Module#**push**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**pop**(): `ExpressionRef` * Module#i64.**pop**(): `ExpressionRef` * Module#f32.**pop**(): `ExpressionRef` * Module#f64.**pop**(): `ExpressionRef` * Module#v128.**pop**(): `ExpressionRef` * Module#funcref.**pop**(): `ExpressionRef` * Module#anyref.**pop**(): `ExpressionRef` * Module#nullref.**pop**(): `ExpressionRef` * Module#exnref.**pop**(): `ExpressionRef` * Module#tuple.**make**(elements: `ExpressionRef[]`): `ExpressionRef` * Module#tuple.**extract**(tuple: `ExpressionRef`, index: `number`): `ExpressionRef` #### [Exception handling operations](https://github.com/WebAssembly/exception-handling/blob/master/proposals/Exceptions.md) 🦄 * Module#**try**(body: `ExpressionRef`, catchBody: `ExpressionRef`): `ExpressionRef` * Module#**throw**(event: `string`, operands: `ExpressionRef[]`): `ExpressionRef` * Module#**rethrow**(exnref: `ExpressionRef`): `ExpressionRef` * Module#**br_on_exn**(label: `string`, event: `string`, exnref: `ExpressionRef`): `ExpressionRef` > * Module#**addEvent**(name: `string`, attribute: `number`, params: `Type`, results: `Type`): `Event` * Module#**getEvent**(name: `string`): `Event` * Module#**removeEvent**(name: `stirng`): `void` * Module#**addEventImport**(internalName: `string`, externalModuleName: `string`, externalBaseName: `string`, attribute: `number`, params: `Type`, results: `Type`): `void` * Module#**addEventExport**(internalName: `string`, externalName: `string`): `ExportRef` #### [Reference types operations](https://github.com/WebAssembly/reference-types/blob/master/proposals/reference-types/Overview.md) 🦄 * Module#ref.**null**(): `ExpressionRef` * Module#ref.**is_null**(value: `ExpressionRef`): `ExpressionRef` * Module#ref.**func**(name: `string`): `ExpressionRef` ### Expression manipulation * **getExpressionId**(expr: `ExpressionRef`): `ExpressionId`<br /> Gets the id (kind) of the specified expression. Possible values are: * **InvalidId**: `ExpressionId` * **BlockId**: `ExpressionId` * **IfId**: `ExpressionId` * **LoopId**: `ExpressionId` * **BreakId**: `ExpressionId` * **SwitchId**: `ExpressionId` * **CallId**: `ExpressionId` * **CallIndirectId**: `ExpressionId` * **LocalGetId**: `ExpressionId` * **LocalSetId**: `ExpressionId` * **GlobalGetId**: `ExpressionId` * **GlobalSetId**: `ExpressionId` * **LoadId**: `ExpressionId` * **StoreId**: `ExpressionId` * **ConstId**: `ExpressionId` * **UnaryId**: `ExpressionId` * **BinaryId**: `ExpressionId` * **SelectId**: `ExpressionId` * **DropId**: `ExpressionId` * **ReturnId**: `ExpressionId` * **HostId**: `ExpressionId` * **NopId**: `ExpressionId` * **UnreachableId**: `ExpressionId` * **AtomicCmpxchgId**: `ExpressionId` * **AtomicRMWId**: `ExpressionId` * **AtomicWaitId**: `ExpressionId` * **AtomicNotifyId**: `ExpressionId` * **AtomicFenceId**: `ExpressionId` * **SIMDExtractId**: `ExpressionId` * **SIMDReplaceId**: `ExpressionId` * **SIMDShuffleId**: `ExpressionId` * **SIMDTernaryId**: `ExpressionId` * **SIMDShiftId**: `ExpressionId` * **SIMDLoadId**: `ExpressionId` * **MemoryInitId**: `ExpressionId` * **DataDropId**: `ExpressionId` * **MemoryCopyId**: `ExpressionId` * **MemoryFillId**: `ExpressionId` * **RefNullId**: `ExpressionId` * **RefIsNullId**: `ExpressionId` * **RefFuncId**: `ExpressionId` * **TryId**: `ExpressionId` * **ThrowId**: `ExpressionId` * **RethrowId**: `ExpressionId` * **BrOnExnId**: `ExpressionId` * **PushId**: `ExpressionId` * **PopId**: `ExpressionId` * **getExpressionType**(expr: `ExpressionRef`): `Type`<br /> Gets the type of the specified expression. * **getExpressionInfo**(expr: `ExpressionRef`): `ExpressionInfo`<br /> Obtains information about an expression, always including: * Info#**id**: `ExpressionId` * Info#**type**: `Type` Additional properties depend on the expression's `id` and are usually equivalent to the respective parameters when creating such an expression: * BlockInfo#**name**: `string` * BlockInfo#**children**: `ExpressionRef[]` > * IfInfo#**condition**: `ExpressionRef` * IfInfo#**ifTrue**: `ExpressionRef` * IfInfo#**ifFalse**: `ExpressionRef | null` > * LoopInfo#**name**: `string` * LoopInfo#**body**: `ExpressionRef` > * BreakInfo#**name**: `string` * BreakInfo#**condition**: `ExpressionRef | null` * BreakInfo#**value**: `ExpressionRef | null` > * SwitchInfo#**names**: `string[]` * SwitchInfo#**defaultName**: `string | null` * SwitchInfo#**condition**: `ExpressionRef` * SwitchInfo#**value**: `ExpressionRef | null` > * CallInfo#**target**: `string` * CallInfo#**operands**: `ExpressionRef[]` > * CallImportInfo#**target**: `string` * CallImportInfo#**operands**: `ExpressionRef[]` > * CallIndirectInfo#**target**: `ExpressionRef` * CallIndirectInfo#**operands**: `ExpressionRef[]` > * LocalGetInfo#**index**: `number` > * LocalSetInfo#**isTee**: `boolean` * LocalSetInfo#**index**: `number` * LocalSetInfo#**value**: `ExpressionRef` > * GlobalGetInfo#**name**: `string` > * GlobalSetInfo#**name**: `string` * GlobalSetInfo#**value**: `ExpressionRef` > * LoadInfo#**isAtomic**: `boolean` * LoadInfo#**isSigned**: `boolean` * LoadInfo#**offset**: `number` * LoadInfo#**bytes**: `number` * LoadInfo#**align**: `number` * LoadInfo#**ptr**: `ExpressionRef` > * StoreInfo#**isAtomic**: `boolean` * StoreInfo#**offset**: `number` * StoreInfo#**bytes**: `number` * StoreInfo#**align**: `number` * StoreInfo#**ptr**: `ExpressionRef` * StoreInfo#**value**: `ExpressionRef` > * ConstInfo#**value**: `number | { low: number, high: number }` > * UnaryInfo#**op**: `number` * UnaryInfo#**value**: `ExpressionRef` > * BinaryInfo#**op**: `number` * BinaryInfo#**left**: `ExpressionRef` * BinaryInfo#**right**: `ExpressionRef` > * SelectInfo#**ifTrue**: `ExpressionRef` * SelectInfo#**ifFalse**: `ExpressionRef` * SelectInfo#**condition**: `ExpressionRef` > * DropInfo#**value**: `ExpressionRef` > * ReturnInfo#**value**: `ExpressionRef | null` > * NopInfo > * UnreachableInfo > * HostInfo#**op**: `number` * HostInfo#**nameOperand**: `string | null` * HostInfo#**operands**: `ExpressionRef[]` > * AtomicRMWInfo#**op**: `number` * AtomicRMWInfo#**bytes**: `number` * AtomicRMWInfo#**offset**: `number` * AtomicRMWInfo#**ptr**: `ExpressionRef` * AtomicRMWInfo#**value**: `ExpressionRef` > * AtomicCmpxchgInfo#**bytes**: `number` * AtomicCmpxchgInfo#**offset**: `number` * AtomicCmpxchgInfo#**ptr**: `ExpressionRef` * AtomicCmpxchgInfo#**expected**: `ExpressionRef` * AtomicCmpxchgInfo#**replacement**: `ExpressionRef` > * AtomicWaitInfo#**ptr**: `ExpressionRef` * AtomicWaitInfo#**expected**: `ExpressionRef` * AtomicWaitInfo#**timeout**: `ExpressionRef` * AtomicWaitInfo#**expectedType**: `Type` > * AtomicNotifyInfo#**ptr**: `ExpressionRef` * AtomicNotifyInfo#**notifyCount**: `ExpressionRef` > * AtomicFenceInfo > * SIMDExtractInfo#**op**: `Op` * SIMDExtractInfo#**vec**: `ExpressionRef` * SIMDExtractInfo#**index**: `ExpressionRef` > * SIMDReplaceInfo#**op**: `Op` * SIMDReplaceInfo#**vec**: `ExpressionRef` * SIMDReplaceInfo#**index**: `ExpressionRef` * SIMDReplaceInfo#**value**: `ExpressionRef` > * SIMDShuffleInfo#**left**: `ExpressionRef` * SIMDShuffleInfo#**right**: `ExpressionRef` * SIMDShuffleInfo#**mask**: `Uint8Array` > * SIMDTernaryInfo#**op**: `Op` * SIMDTernaryInfo#**a**: `ExpressionRef` * SIMDTernaryInfo#**b**: `ExpressionRef` * SIMDTernaryInfo#**c**: `ExpressionRef` > * SIMDShiftInfo#**op**: `Op` * SIMDShiftInfo#**vec**: `ExpressionRef` * SIMDShiftInfo#**shift**: `ExpressionRef` > * SIMDLoadInfo#**op**: `Op` * SIMDLoadInfo#**offset**: `number` * SIMDLoadInfo#**align**: `number` * SIMDLoadInfo#**ptr**: `ExpressionRef` > * MemoryInitInfo#**segment**: `number` * MemoryInitInfo#**dest**: `ExpressionRef` * MemoryInitInfo#**offset**: `ExpressionRef` * MemoryInitInfo#**size**: `ExpressionRef` > * MemoryDropInfo#**segment**: `number` > * MemoryCopyInfo#**dest**: `ExpressionRef` * MemoryCopyInfo#**source**: `ExpressionRef` * MemoryCopyInfo#**size**: `ExpressionRef` > * MemoryFillInfo#**dest**: `ExpressionRef` * MemoryFillInfo#**value**: `ExpressionRef` * MemoryFillInfo#**size**: `ExpressionRef` > * TryInfo#**body**: `ExpressionRef` * TryInfo#**catchBody**: `ExpressionRef` > * RefNullInfo > * RefIsNullInfo#**value**: `ExpressionRef` > * RefFuncInfo#**func**: `string` > * ThrowInfo#**event**: `string` * ThrowInfo#**operands**: `ExpressionRef[]` > * RethrowInfo#**exnref**: `ExpressionRef` > * BrOnExnInfo#**name**: `string` * BrOnExnInfo#**event**: `string` * BrOnExnInfo#**exnref**: `ExpressionRef` > * PopInfo > * PushInfo#**value**: `ExpressionRef` * **emitText**(expression: `ExpressionRef`): `string`<br /> Emits the expression in Binaryen's s-expression text format (not official stack-style text format). * **copyExpression**(expression: `ExpressionRef`): `ExpressionRef`<br /> Creates a deep copy of an expression. ### Relooper * new **Relooper**()<br /> Constructs a relooper instance. This lets you provide an arbitrary CFG, and the relooper will structure it for WebAssembly. * Relooper#**addBlock**(code: `ExpressionRef`): `RelooperBlockRef`<br /> Adds a new block to the CFG, containing the provided code as its body. * Relooper#**addBranch**(from: `RelooperBlockRef`, to: `RelooperBlockRef`, condition: `ExpressionRef`, code: `ExpressionRef`): `void`<br /> Adds a branch from a block to another block, with a condition (or nothing, if this is the default branch to take from the origin - each block must have one such branch), and optional code to execute on the branch (useful for phis). * Relooper#**addBlockWithSwitch**(code: `ExpressionRef`, condition: `ExpressionRef`): `RelooperBlockRef`<br /> Adds a new block, which ends with a switch/br_table, with provided code and condition (that determines where we go in the switch). * Relooper#**addBranchForSwitch**(from: `RelooperBlockRef`, to: `RelooperBlockRef`, indexes: `number[]`, code: `ExpressionRef`): `void`<br /> Adds a branch from a block ending in a switch, to another block, using an array of indexes that determine where to go, and optional code to execute on the branch. * Relooper#**renderAndDispose**(entry: `RelooperBlockRef`, labelHelper: `number`, module: `Module`): `ExpressionRef`<br /> Renders and cleans up the Relooper instance. Call this after you have created all the blocks and branches, giving it the entry block (where control flow begins), a label helper variable (an index of a local we can use, necessary for irreducible control flow), and the module. This returns an expression - normal WebAssembly code - that you can use normally anywhere. ### Source maps * Module#**addDebugInfoFileName**(filename: `string`): `number`<br /> Adds a debug info file name to the module and returns its index. * Module#**getDebugInfoFileName**(index: `number`): `string | null` <br /> Gets the name of the debug info file at the specified index. * Module#**setDebugLocation**(func: `FunctionRef`, expr: `ExpressionRef`, fileIndex: `number`, lineNumber: `number`, columnNumber: `number`): `void`<br /> Sets the debug location of the specified `ExpressionRef` within the specified `FunctionRef`. ### Debugging * Module#**interpret**(): `void`<br /> Runs the module in the interpreter, calling the start function. # create-hash [](https://travis-ci.org/crypto-browserify/createHash) Node style hashes for use in the browser, with native hash functions in node. API is the same as hashes in node: ```js var createHash = require('create-hash') var hash = createHash('sha224') hash.update('synchronous write') // optional encoding parameter hash.digest() // synchronously get result with optional encoding parameter hash.write('write to it as a stream') hash.end() // remember it's a stream hash.read() // only if you ended it as a stream though ``` To get the JavaScript version even in node do `require('create-hash/browser')` # word-wrap [](https://www.npmjs.com/package/word-wrap) [](https://npmjs.org/package/word-wrap) [](https://npmjs.org/package/word-wrap) [](https://travis-ci.org/jonschlinkert/word-wrap) > Wrap words to a specified length. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save word-wrap ``` ## Usage ```js var wrap = require('word-wrap'); wrap('Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.'); ``` Results in: ``` Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. ``` ## Options  ### options.width Type: `Number` Default: `50` The width of the text before wrapping to a new line. **Example:** ```js wrap(str, {width: 60}); ``` ### options.indent Type: `String` Default: `` (two spaces) The string to use at the beginning of each line. **Example:** ```js wrap(str, {indent: ' '}); ``` ### options.newline Type: `String` Default: `\n` The string to use at the end of each line. **Example:** ```js wrap(str, {newline: '\n\n'}); ``` ### options.escape Type: `function` Default: `function(str){return str;}` An escape function to run on each line after splitting them. **Example:** ```js var xmlescape = require('xml-escape'); wrap(str, { escape: function(string){ return xmlescape(string); } }); ``` ### options.trim Type: `Boolean` Default: `false` Trim trailing whitespace from the returned string. This option is included since `.trim()` would also strip the leading indentation from the first line. **Example:** ```js wrap(str, {trim: true}); ``` ### options.cut Type: `Boolean` Default: `false` Break a word between any two letters when the word is longer than the specified width. **Example:** ```js wrap(str, {cut: true}); ``` ## About ### Related projects * [common-words](https://www.npmjs.com/package/common-words): Updated list (JSON) of the 100 most common words in the English language. Useful for… [more](https://github.com/jonschlinkert/common-words) | [homepage](https://github.com/jonschlinkert/common-words "Updated list (JSON) of the 100 most common words in the English language. Useful for excluding these words from arrays.") * [shuffle-words](https://www.npmjs.com/package/shuffle-words): Shuffle the words in a string and optionally the letters in each word using the… [more](https://github.com/jonschlinkert/shuffle-words) | [homepage](https://github.com/jonschlinkert/shuffle-words "Shuffle the words in a string and optionally the letters in each word using the Fisher-Yates algorithm. Useful for creating test fixtures, benchmarking samples, etc.") * [unique-words](https://www.npmjs.com/package/unique-words): Return the unique words in a string or array. | [homepage](https://github.com/jonschlinkert/unique-words "Return the unique words in a string or array.") * [wordcount](https://www.npmjs.com/package/wordcount): Count the words in a string. Support for english, CJK and Cyrillic. | [homepage](https://github.com/jonschlinkert/wordcount "Count the words in a string. Support for english, CJK and Cyrillic.") ### Contributing Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). ### Contributors | **Commits** | **Contributor** | | --- | --- | | 43 | [jonschlinkert](https://github.com/jonschlinkert) | | 2 | [lordvlad](https://github.com/lordvlad) | | 2 | [hildjj](https://github.com/hildjj) | | 1 | [danilosampaio](https://github.com/danilosampaio) | | 1 | [2fd](https://github.com/2fd) | | 1 | [toddself](https://github.com/toddself) | | 1 | [wolfgang42](https://github.com/wolfgang42) | | 1 | [zachhale](https://github.com/zachhale) | ### Building docs _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` ### Running tests Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` ### Author **Jon Schlinkert** * [github/jonschlinkert](https://github.com/jonschlinkert) * [twitter/jonschlinkert](https://twitter.com/jonschlinkert) ### License Copyright © 2017, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT License](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.6.0, on June 02, 2017._ # readable-stream ***Node-core v8.11.1 streams for userland*** [](https://travis-ci.org/nodejs/readable-stream) [](https://nodei.co/npm/readable-stream/) [](https://nodei.co/npm/readable-stream/) [](https://saucelabs.com/u/readable-stream) ```bash npm install --save readable-stream ``` ***Node-core streams for userland*** This package is a mirror of the Streams2 and Streams3 implementations in Node-core. Full documentation may be found on the [Node.js website](https://nodejs.org/dist/v8.11.1/docs/api/stream.html). If you want to guarantee a stable streams base, regardless of what version of Node you, or the users of your libraries are using, use **readable-stream** *only* and avoid the *"stream"* module in Node-core, for background see [this blogpost](http://r.va.gg/2014/06/why-i-dont-use-nodes-core-stream-module.html). As of version 2.0.0 **readable-stream** uses semantic versioning. # Streams Working Group `readable-stream` is maintained by the Streams Working Group, which oversees the development and maintenance of the Streams API within Node.js. The responsibilities of the Streams Working Group include: * Addressing stream issues on the Node.js issue tracker. * Authoring and editing stream documentation within the Node.js project. * Reviewing changes to stream subclasses within the Node.js project. * Redirecting changes to streams from the Node.js project to this project. * Assisting in the implementation of stream providers within Node.js. * Recommending versions of `readable-stream` to be included in Node.js. * Messaging about the future of streams to give the community advance notice of changes. <a name="members"></a> ## Team Members * **Chris Dickinson** ([@chrisdickinson](https://github.com/chrisdickinson)) &lt;christopher.s.dickinson@gmail.com&gt; - Release GPG key: 9554F04D7259F04124DE6B476D5A82AC7E37093B * **Calvin Metcalf** ([@calvinmetcalf](https://github.com/calvinmetcalf)) &lt;calvin.metcalf@gmail.com&gt; - Release GPG key: F3EF5F62A87FC27A22E643F714CE4FF5015AA242 * **Rod Vagg** ([@rvagg](https://github.com/rvagg)) &lt;rod@vagg.org&gt; - Release GPG key: DD8F2338BAE7501E3DD5AC78C273792F7D83545D * **Sam Newman** ([@sonewman](https://github.com/sonewman)) &lt;newmansam@outlook.com&gt; * **Mathias Buus** ([@mafintosh](https://github.com/mafintosh)) &lt;mathiasbuus@gmail.com&gt; * **Domenic Denicola** ([@domenic](https://github.com/domenic)) &lt;d@domenic.me&gt; * **Matteo Collina** ([@mcollina](https://github.com/mcollina)) &lt;matteo.collina@gmail.com&gt; - Release GPG key: 3ABC01543F22DD2239285CDD818674489FBC127E * **Irina Shestak** ([@lrlna](https://github.com/lrlna)) &lt;shestak.irina@gmail.com&gt; # readable-stream ***Node.js core streams for userland*** [](https://travis-ci.com/nodejs/readable-stream) [](https://nodei.co/npm/readable-stream/) [](https://nodei.co/npm/readable-stream/) [](https://saucelabs.com/u/readabe-stream) ```bash npm install --save readable-stream ``` This package is a mirror of the streams implementations in Node.js. Full documentation may be found on the [Node.js website](https://nodejs.org/dist/v10.19.0/docs/api/stream.html). If you want to guarantee a stable streams base, regardless of what version of Node you, or the users of your libraries are using, use **readable-stream** *only* and avoid the *"stream"* module in Node-core, for background see [this blogpost](http://r.va.gg/2014/06/why-i-dont-use-nodes-core-stream-module.html). As of version 2.0.0 **readable-stream** uses semantic versioning. ## Version 3.x.x v3.x.x of `readable-stream` is a cut from Node 10. This version supports Node 6, 8, and 10, as well as evergreen browsers, IE 11 and latest Safari. The breaking changes introduced by v3 are composed by the combined breaking changes in [Node v9](https://nodejs.org/en/blog/release/v9.0.0/) and [Node v10](https://nodejs.org/en/blog/release/v10.0.0/), as follows: 1. Error codes: https://github.com/nodejs/node/pull/13310, https://github.com/nodejs/node/pull/13291, https://github.com/nodejs/node/pull/16589, https://github.com/nodejs/node/pull/15042, https://github.com/nodejs/node/pull/15665, https://github.com/nodejs/readable-stream/pull/344 2. 'readable' have precedence over flowing https://github.com/nodejs/node/pull/18994 3. make virtual methods errors consistent https://github.com/nodejs/node/pull/18813 4. updated streams error handling https://github.com/nodejs/node/pull/18438 5. writable.end should return this. https://github.com/nodejs/node/pull/18780 6. readable continues to read when push('') https://github.com/nodejs/node/pull/18211 7. add custom inspect to BufferList https://github.com/nodejs/node/pull/17907 8. always defer 'readable' with nextTick https://github.com/nodejs/node/pull/17979 ## Version 2.x.x v2.x.x of `readable-stream` is a cut of the stream module from Node 8 (there have been no semver-major changes from Node 4 to 8). This version supports all Node.js versions from 0.8, as well as evergreen browsers and IE 10 & 11. ### Big Thanks Cross-browser Testing Platform and Open Source <3 Provided by [Sauce Labs][sauce] # Usage You can swap your `require('stream')` with `require('readable-stream')` without any changes, if you are just using one of the main classes and functions. ```js const { Readable, Writable, Transform, Duplex, pipeline, finished } = require('readable-stream') ```` Note that `require('stream')` will return `Stream`, while `require('readable-stream')` will return `Readable`. We discourage using whatever is exported directly, but rather use one of the properties as shown in the example above. # Streams Working Group `readable-stream` is maintained by the Streams Working Group, which oversees the development and maintenance of the Streams API within Node.js. The responsibilities of the Streams Working Group include: * Addressing stream issues on the Node.js issue tracker. * Authoring and editing stream documentation within the Node.js project. * Reviewing changes to stream subclasses within the Node.js project. * Redirecting changes to streams from the Node.js project to this project. * Assisting in the implementation of stream providers within Node.js. * Recommending versions of `readable-stream` to be included in Node.js. * Messaging about the future of streams to give the community advance notice of changes. <a name="members"></a> ## Team Members * **Calvin Metcalf** ([@calvinmetcalf](https://github.com/calvinmetcalf)) &lt;calvin.metcalf@gmail.com&gt; - Release GPG key: F3EF5F62A87FC27A22E643F714CE4FF5015AA242 * **Mathias Buus** ([@mafintosh](https://github.com/mafintosh)) &lt;mathiasbuus@gmail.com&gt; * **Matteo Collina** ([@mcollina](https://github.com/mcollina)) &lt;matteo.collina@gmail.com&gt; - Release GPG key: 3ABC01543F22DD2239285CDD818674489FBC127E * **Irina Shestak** ([@lrlna](https://github.com/lrlna)) &lt;shestak.irina@gmail.com&gt; * **Yoshua Wyuts** ([@yoshuawuyts](https://github.com/yoshuawuyts)) &lt;yoshuawuyts@gmail.com&gt; [sauce]: https://saucelabs.com # cross-spawn [![NPM version][npm-image]][npm-url] [![Downloads][downloads-image]][npm-url] [![Build Status][travis-image]][travis-url] [![Build status][appveyor-image]][appveyor-url] [![Coverage Status][codecov-image]][codecov-url] [![Dependency status][david-dm-image]][david-dm-url] [![Dev Dependency status][david-dm-dev-image]][david-dm-dev-url] [npm-url]:https://npmjs.org/package/cross-spawn [downloads-image]:https://img.shields.io/npm/dm/cross-spawn.svg [npm-image]:https://img.shields.io/npm/v/cross-spawn.svg [travis-url]:https://travis-ci.org/moxystudio/node-cross-spawn [travis-image]:https://img.shields.io/travis/moxystudio/node-cross-spawn/master.svg [appveyor-url]:https://ci.appveyor.com/project/satazor/node-cross-spawn [appveyor-image]:https://img.shields.io/appveyor/ci/satazor/node-cross-spawn/master.svg [codecov-url]:https://codecov.io/gh/moxystudio/node-cross-spawn [codecov-image]:https://img.shields.io/codecov/c/github/moxystudio/node-cross-spawn/master.svg [david-dm-url]:https://david-dm.org/moxystudio/node-cross-spawn [david-dm-image]:https://img.shields.io/david/moxystudio/node-cross-spawn.svg [david-dm-dev-url]:https://david-dm.org/moxystudio/node-cross-spawn?type=dev [david-dm-dev-image]:https://img.shields.io/david/dev/moxystudio/node-cross-spawn.svg A cross platform solution to node's spawn and spawnSync. ## Installation Node.js version 8 and up: `$ npm install cross-spawn` Node.js version 7 and under: `$ npm install cross-spawn@6` ## Why Node has issues when using spawn on Windows: - It ignores [PATHEXT](https://github.com/joyent/node/issues/2318) - It does not support [shebangs](https://en.wikipedia.org/wiki/Shebang_(Unix)) - Has problems running commands with [spaces](https://github.com/nodejs/node/issues/7367) - Has problems running commands with posix relative paths (e.g.: `./my-folder/my-executable`) - Has an [issue](https://github.com/moxystudio/node-cross-spawn/issues/82) with command shims (files in `node_modules/.bin/`), where arguments with quotes and parenthesis would result in [invalid syntax error](https://github.com/moxystudio/node-cross-spawn/blob/e77b8f22a416db46b6196767bcd35601d7e11d54/test/index.test.js#L149) - No `options.shell` support on node `<v4.8` All these issues are handled correctly by `cross-spawn`. There are some known modules, such as [win-spawn](https://github.com/ForbesLindesay/win-spawn), that try to solve this but they are either broken or provide faulty escaping of shell arguments. ## Usage Exactly the same way as node's [`spawn`](https://nodejs.org/api/child_process.html#child_process_child_process_spawn_command_args_options) or [`spawnSync`](https://nodejs.org/api/child_process.html#child_process_child_process_spawnsync_command_args_options), so it's a drop in replacement. ```js const spawn = require('cross-spawn'); // Spawn NPM asynchronously const child = spawn('npm', ['list', '-g', '-depth', '0'], { stdio: 'inherit' }); // Spawn NPM synchronously const result = spawn.sync('npm', ['list', '-g', '-depth', '0'], { stdio: 'inherit' }); ``` ## Caveats ### Using `options.shell` as an alternative to `cross-spawn` Starting from node `v4.8`, `spawn` has a `shell` option that allows you run commands from within a shell. This new option solves the [PATHEXT](https://github.com/joyent/node/issues/2318) issue but: - It's not supported in node `<v4.8` - You must manually escape the command and arguments which is very error prone, specially when passing user input - There are a lot of other unresolved issues from the [Why](#why) section that you must take into account If you are using the `shell` option to spawn a command in a cross platform way, consider using `cross-spawn` instead. You have been warned. ### `options.shell` support While `cross-spawn` adds support for `options.shell` in node `<v4.8`, all of its enhancements are disabled. This mimics the Node.js behavior. More specifically, the command and its arguments will not be automatically escaped nor shebang support will be offered. This is by design because if you are using `options.shell` you are probably targeting a specific platform anyway and you don't want things to get into your way. ### Shebangs support While `cross-spawn` handles shebangs on Windows, its support is limited. More specifically, it just supports `#!/usr/bin/env <program>` where `<program>` must not contain any arguments. If you would like to have the shebang support improved, feel free to contribute via a pull-request. Remember to always test your code on Windows! ## Tests `$ npm test` `$ npm test -- --watch` during development ## License Released under the [MIT License](https://www.opensource.org/licenses/mit-license.php). # debug [](https://travis-ci.org/visionmedia/debug) [](https://coveralls.io/github/visionmedia/debug?branch=master) [](https://visionmedia-community-slackin.now.sh/) [](#backers) [](#sponsors) <img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png"> A tiny JavaScript debugging utility modelled after Node.js core's debugging technique. Works in Node.js and web browsers. ## Installation ```bash $ npm install debug ``` ## Usage `debug` exposes a function; simply pass this function the name of your module, and it will return a decorated version of `console.error` for you to pass debug statements to. This will allow you to toggle the debug output for different parts of your module as well as the module as a whole. Example [_app.js_](./examples/node/app.js): ```js var debug = require('debug')('http') , http = require('http') , name = 'My App'; // fake app debug('booting %o', name); http.createServer(function(req, res){ debug(req.method + ' ' + req.url); res.end('hello\n'); }).listen(3000, function(){ debug('listening'); }); // fake worker of some kind require('./worker'); ``` Example [_worker.js_](./examples/node/worker.js): ```js var a = require('debug')('worker:a') , b = require('debug')('worker:b'); function work() { a('doing lots of uninteresting work'); setTimeout(work, Math.random() * 1000); } work(); function workb() { b('doing some work'); setTimeout(workb, Math.random() * 2000); } workb(); ``` The `DEBUG` environment variable is then used to enable these based on space or comma-delimited names. Here are some examples: <img width="647" alt="screen shot 2017-08-08 at 12 53 04 pm" src="https://user-images.githubusercontent.com/71256/29091703-a6302cdc-7c38-11e7-8304-7c0b3bc600cd.png"> <img width="647" alt="screen shot 2017-08-08 at 12 53 38 pm" src="https://user-images.githubusercontent.com/71256/29091700-a62a6888-7c38-11e7-800b-db911291ca2b.png"> <img width="647" alt="screen shot 2017-08-08 at 12 53 25 pm" src="https://user-images.githubusercontent.com/71256/29091701-a62ea114-7c38-11e7-826a-2692bedca740.png"> #### Windows command prompt notes ##### CMD On Windows the environment variable is set using the `set` command. ```cmd set DEBUG=*,-not_this ``` Example: ```cmd set DEBUG=* & node app.js ``` ##### PowerShell (VS Code default) PowerShell uses different syntax to set environment variables. ```cmd $env:DEBUG = "*,-not_this" ``` Example: ```cmd $env:DEBUG='app';node app.js ``` Then, run the program to be debugged as usual. npm script example: ```js "windowsDebug": "@powershell -Command $env:DEBUG='*';node app.js", ``` ## Namespace Colors Every debug instance has a color generated for it based on its namespace name. This helps when visually parsing the debug output to identify which debug instance a debug line belongs to. #### Node.js In Node.js, colors are enabled when stderr is a TTY. You also _should_ install the [`supports-color`](https://npmjs.org/supports-color) module alongside debug, otherwise debug will only use a small handful of basic colors. <img width="521" src="https://user-images.githubusercontent.com/71256/29092181-47f6a9e6-7c3a-11e7-9a14-1928d8a711cd.png"> #### Web Browser Colors are also enabled on "Web Inspectors" that understand the `%c` formatting option. These are WebKit web inspectors, Firefox ([since version 31](https://hacks.mozilla.org/2014/05/editable-box-model-multiple-selection-sublime-text-keys-much-more-firefox-developer-tools-episode-31/)) and the Firebug plugin for Firefox (any version). <img width="524" src="https://user-images.githubusercontent.com/71256/29092033-b65f9f2e-7c39-11e7-8e32-f6f0d8e865c1.png"> ## Millisecond diff When actively developing an application it can be useful to see when the time spent between one `debug()` call and the next. Suppose for example you invoke `debug()` before requesting a resource, and after as well, the "+NNNms" will show you how much time was spent between calls. <img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png"> When stdout is not a TTY, `Date#toISOString()` is used, making it more useful for logging the debug information as shown below: <img width="647" src="https://user-images.githubusercontent.com/71256/29091956-6bd78372-7c39-11e7-8c55-c948396d6edd.png"> ## Conventions If you're using this in one or more of your libraries, you _should_ use the name of your library so that developers may toggle debugging as desired without guessing names. If you have more than one debuggers you _should_ prefix them with your library name and use ":" to separate features. For example "bodyParser" from Connect would then be "connect:bodyParser". If you append a "*" to the end of your name, it will always be enabled regardless of the setting of the DEBUG environment variable. You can then use it for normal output as well as debug output. ## Wildcards The `*` character may be used as a wildcard. Suppose for example your library has debuggers named "connect:bodyParser", "connect:compress", "connect:session", instead of listing all three with `DEBUG=connect:bodyParser,connect:compress,connect:session`, you may simply do `DEBUG=connect:*`, or to run everything using this module simply use `DEBUG=*`. You can also exclude specific debuggers by prefixing them with a "-" character. For example, `DEBUG=*,-connect:*` would include all debuggers except those starting with "connect:". ## Environment Variables When running through Node.js, you can set a few environment variables that will change the behavior of the debug logging: | Name | Purpose | |-----------|-------------------------------------------------| | `DEBUG` | Enables/disables specific debugging namespaces. | | `DEBUG_HIDE_DATE` | Hide date from debug output (non-TTY). | | `DEBUG_COLORS`| Whether or not to use colors in the debug output. | | `DEBUG_DEPTH` | Object inspection depth. | | `DEBUG_SHOW_HIDDEN` | Shows hidden properties on inspected objects. | __Note:__ The environment variables beginning with `DEBUG_` end up being converted into an Options object that gets used with `%o`/`%O` formatters. See the Node.js documentation for [`util.inspect()`](https://nodejs.org/api/util.html#util_util_inspect_object_options) for the complete list. ## Formatters Debug uses [printf-style](https://wikipedia.org/wiki/Printf_format_string) formatting. Below are the officially supported formatters: | Formatter | Representation | |-----------|----------------| | `%O` | Pretty-print an Object on multiple lines. | | `%o` | Pretty-print an Object all on a single line. | | `%s` | String. | | `%d` | Number (both integer and float). | | `%j` | JSON. Replaced with the string '[Circular]' if the argument contains circular references. | | `%%` | Single percent sign ('%'). This does not consume an argument. | ### Custom formatters You can add custom formatters by extending the `debug.formatters` object. For example, if you wanted to add support for rendering a Buffer as hex with `%h`, you could do something like: ```js const createDebug = require('debug') createDebug.formatters.h = (v) => { return v.toString('hex') } // …elsewhere const debug = createDebug('foo') debug('this is hex: %h', new Buffer('hello world')) // foo this is hex: 68656c6c6f20776f726c6421 +0ms ``` ## Browser Support You can build a browser-ready script using [browserify](https://github.com/substack/node-browserify), or just use the [browserify-as-a-service](https://wzrd.in/) [build](https://wzrd.in/standalone/debug@latest), if you don't want to build it yourself. Debug's enable state is currently persisted by `localStorage`. Consider the situation shown below where you have `worker:a` and `worker:b`, and wish to debug both. You can enable this using `localStorage.debug`: ```js localStorage.debug = 'worker:*' ``` And then refresh the page. ```js a = debug('worker:a'); b = debug('worker:b'); setInterval(function(){ a('doing some work'); }, 1000); setInterval(function(){ b('doing some work'); }, 1200); ``` ## Output streams By default `debug` will log to stderr, however this can be configured per-namespace by overriding the `log` method: Example [_stdout.js_](./examples/node/stdout.js): ```js var debug = require('debug'); var error = debug('app:error'); // by default stderr is used error('goes to stderr!'); var log = debug('app:log'); // set this namespace to log via console.log log.log = console.log.bind(console); // don't forget to bind to console! log('goes to stdout'); error('still goes to stderr!'); // set all output to go via console.info // overrides all per-namespace log settings debug.log = console.info.bind(console); error('now goes to stdout via console.info'); log('still goes to stdout, but via console.info now'); ``` ## Extend You can simply extend debugger ```js const log = require('debug')('auth'); //creates new debug instance with extended namespace const logSign = log.extend('sign'); const logLogin = log.extend('login'); log('hello'); // auth hello logSign('hello'); //auth:sign hello logLogin('hello'); //auth:login hello ``` ## Set dynamically You can also enable debug dynamically by calling the `enable()` method : ```js let debug = require('debug'); console.log(1, debug.enabled('test')); debug.enable('test'); console.log(2, debug.enabled('test')); debug.disable(); console.log(3, debug.enabled('test')); ``` print : ``` 1 false 2 true 3 false ``` Usage : `enable(namespaces)` `namespaces` can include modes separated by a colon and wildcards. Note that calling `enable()` completely overrides previously set DEBUG variable : ``` $ DEBUG=foo node -e 'var dbg = require("debug"); dbg.enable("bar"); console.log(dbg.enabled("foo"))' => false ``` `disable()` Will disable all namespaces. The functions returns the namespaces currently enabled (and skipped). This can be useful if you want to disable debugging temporarily without knowing what was enabled to begin with. For example: ```js let debug = require('debug'); debug.enable('foo:*,-foo:bar'); let namespaces = debug.disable(); debug.enable(namespaces); ``` Note: There is no guarantee that the string will be identical to the initial enable string, but semantically they will be identical. ## Checking whether a debug target is enabled After you've created a debug instance, you can determine whether or not it is enabled by checking the `enabled` property: ```javascript const debug = require('debug')('http'); if (debug.enabled) { // do stuff... } ``` You can also manually toggle this property to force the debug instance to be enabled or disabled. ## Authors - TJ Holowaychuk - Nathan Rajlich - Andrew Rhyne ## Backers Support us with a monthly donation and help us continue our activities. 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Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # Acorn-JSX [](https://travis-ci.org/acornjs/acorn-jsx) [](https://www.npmjs.org/package/acorn-jsx) This is plugin for [Acorn](http://marijnhaverbeke.nl/acorn/) - a tiny, fast JavaScript parser, written completely in JavaScript. It was created as an experimental alternative, faster [React.js JSX](http://facebook.github.io/react/docs/jsx-in-depth.html) parser. Later, it replaced the [official parser](https://github.com/facebookarchive/esprima) and these days is used by many prominent development tools. ## Transpiler Please note that this tool only parses source code to JSX AST, which is useful for various language tools and services. If you want to transpile your code to regular ES5-compliant JavaScript with source map, check out [Babel](https://babeljs.io/) and [Buble](https://buble.surge.sh/) transpilers which use `acorn-jsx` under the hood. ## Usage Requiring this module provides you with an Acorn plugin that you can use like this: ```javascript var acorn = require("acorn"); var jsx = require("acorn-jsx"); acorn.Parser.extend(jsx()).parse("my(<jsx/>, 'code');"); ``` Note that official spec doesn't support mix of XML namespaces and object-style access in tag names (#27) like in `<namespace:Object.Property />`, so it was deprecated in `acorn-jsx@3.0`. If you still want to opt-in to support of such constructions, you can pass the following option: ```javascript acorn.Parser.extend(jsx({ allowNamespacedObjects: true })) ``` Also, since most apps use pure React transformer, a new option was introduced that allows to prohibit namespaces completely: ```javascript acorn.Parser.extend(jsx({ allowNamespaces: false })) ``` Note that by default `allowNamespaces` is enabled for spec compliancy. ## License This plugin is issued under the [MIT license](./LICENSE).  Moo! ==== Moo is a highly-optimised tokenizer/lexer generator. Use it to tokenize your strings, before parsing 'em with a parser like [nearley](https://github.com/hardmath123/nearley) or whatever else you're into. * [Fast](#is-it-fast) * [Convenient](#usage) * uses [Regular Expressions](#on-regular-expressions) * tracks [Line Numbers](#line-numbers) * handles [Keywords](#keywords) * supports [States](#states) * custom [Errors](#errors) * is even [Iterable](#iteration) * has no dependencies * 4KB minified + gzipped * Moo! Is it fast? ----------- Yup! Flying-cows-and-singed-steak fast. Moo is the fastest JS tokenizer around. It's **~2–10x** faster than most other tokenizers; it's a **couple orders of magnitude** faster than some of the slower ones. Define your tokens **using regular expressions**. Moo will compile 'em down to a **single RegExp for performance**. It uses the new ES6 **sticky flag** where possible to make things faster; otherwise it falls back to an almost-as-efficient workaround. (For more than you ever wanted to know about this, read [adventures in the land of substrings and RegExps](http://mrale.ph/blog/2016/11/23/making-less-dart-faster.html).) You _might_ be able to go faster still by writing your lexer by hand rather than using RegExps, but that's icky. Oh, and it [avoids parsing RegExps by itself](https://hackernoon.com/the-madness-of-parsing-real-world-javascript-regexps-d9ee336df983#.2l8qu3l76). Because that would be horrible. Usage ----- First, you need to do the needful: `$ npm install moo`, or whatever will ship this code to your computer. Alternatively, grab the `moo.js` file by itself and slap it into your web page via a `<script>` tag; moo is completely standalone. Then you can start roasting your very own lexer/tokenizer: ```js const moo = require('moo') let lexer = moo.compile({ WS: /[ \t]+/, comment: /\/\/.*?$/, number: /0|[1-9][0-9]*/, string: /"(?:\\["\\]|[^\n"\\])*"/, lparen: '(', rparen: ')', keyword: ['while', 'if', 'else', 'moo', 'cows'], NL: { match: /\n/, lineBreaks: true }, }) ``` And now throw some text at it: ```js lexer.reset('while (10) cows\nmoo') lexer.next() // -> { type: 'keyword', value: 'while' } lexer.next() // -> { type: 'WS', value: ' ' } lexer.next() // -> { type: 'lparen', value: '(' } lexer.next() // -> { type: 'number', value: '10' } // ... ``` When you reach the end of Moo's internal buffer, next() will return `undefined`. You can always `reset()` it and feed it more data when that happens. On Regular Expressions ---------------------- RegExps are nifty for making tokenizers, but they can be a bit of a pain. Here are some things to be aware of: * You often want to use **non-greedy quantifiers**: e.g. `*?` instead of `*`. Otherwise your tokens will be longer than you expect: ```js let lexer = moo.compile({ string: /".*"/, // greedy quantifier * // ... }) lexer.reset('"foo" "bar"') lexer.next() // -> { type: 'string', value: 'foo" "bar' } ``` Better: ```js let lexer = moo.compile({ string: /".*?"/, // non-greedy quantifier *? // ... }) lexer.reset('"foo" "bar"') lexer.next() // -> { type: 'string', value: 'foo' } lexer.next() // -> { type: 'space', value: ' ' } lexer.next() // -> { type: 'string', value: 'bar' } ``` * The **order of your rules** matters. Earlier ones will take precedence. ```js moo.compile({ identifier: /[a-z0-9]+/, number: /[0-9]+/, }).reset('42').next() // -> { type: 'identifier', value: '42' } moo.compile({ number: /[0-9]+/, identifier: /[a-z0-9]+/, }).reset('42').next() // -> { type: 'number', value: '42' } ``` * Moo uses **multiline RegExps**. This has a few quirks: for example, the **dot `/./` doesn't include newlines**. Use `[^]` instead if you want to match newlines too. * Since an excluding character ranges like `/[^ ]/` (which matches anything but a space) _will_ include newlines, you have to be careful not to include them by accident! In particular, the whitespace metacharacter `\s` includes newlines. Line Numbers ------------ Moo tracks detailed information about the input for you. It will track line numbers, as long as you **apply the `lineBreaks: true` option to any rules which might contain newlines**. Moo will try to warn you if you forget to do this. Note that this is `false` by default, for performance reasons: counting the number of lines in a matched token has a small cost. For optimal performance, only match newlines inside a dedicated token: ```js newline: {match: '\n', lineBreaks: true}, ``` ### Token Info ### Token objects (returned from `next()`) have the following attributes: * **`type`**: the name of the group, as passed to compile. * **`text`**: the string that was matched. * **`value`**: the string that was matched, transformed by your `value` function (if any). * **`offset`**: the number of bytes from the start of the buffer where the match starts. * **`lineBreaks`**: the number of line breaks found in the match. (Always zero if this rule has `lineBreaks: false`.) * **`line`**: the line number of the beginning of the match, starting from 1. * **`col`**: the column where the match begins, starting from 1. ### Value vs. Text ### The `value` is the same as the `text`, unless you provide a [value transform](#transform). ```js const moo = require('moo') const lexer = moo.compile({ ws: /[ \t]+/, string: {match: /"(?:\\["\\]|[^\n"\\])*"/, value: s => s.slice(1, -1)}, }) lexer.reset('"test"') lexer.next() /* { value: 'test', text: '"test"', ... } */ ``` ### Reset ### Calling `reset()` on your lexer will empty its internal buffer, and set the line, column, and offset counts back to their initial value. If you don't want this, you can `save()` the state, and later pass it as the second argument to `reset()` to explicitly control the internal state of the lexer. ```js    lexer.reset('some line\n') let info = lexer.save() // -> { line: 10 } lexer.next() // -> { line: 10 } lexer.next() // -> { line: 11 } // ... lexer.reset('a different line\n', info) lexer.next() // -> { line: 10 } ``` Keywords -------- Moo makes it convenient to define literals. ```js moo.compile({ lparen: '(', rparen: ')', keyword: ['while', 'if', 'else', 'moo', 'cows'], }) ``` It'll automatically compile them into regular expressions, escaping them where necessary. **Keywords** should be written using the `keywords` transform. ```js moo.compile({ IDEN: {match: /[a-zA-Z]+/, type: moo.keywords({ KW: ['while', 'if', 'else', 'moo', 'cows'], })}, SPACE: {match: /\s+/, lineBreaks: true}, }) ``` ### Why? ### You need to do this to ensure the **longest match** principle applies, even in edge cases. Imagine trying to parse the input `className` with the following rules: ```js keyword: ['class'], identifier: /[a-zA-Z]+/, ``` You'll get _two_ tokens — `['class', 'Name']` -- which is _not_ what you want! If you swap the order of the rules, you'll fix this example; but now you'll lex `class` wrong (as an `identifier`). The keywords helper checks matches against the list of keywords; if any of them match, it uses the type `'keyword'` instead of `'identifier'` (for this example). ### Keyword Types ### Keywords can also have **individual types**. ```js let lexer = moo.compile({ name: {match: /[a-zA-Z]+/, type: moo.keywords({ 'kw-class': 'class', 'kw-def': 'def', 'kw-if': 'if', })}, // ... }) lexer.reset('def foo') lexer.next() // -> { type: 'kw-def', value: 'def' } lexer.next() // space lexer.next() // -> { type: 'name', value: 'foo' } ``` You can use [itt](https://github.com/nathan/itt)'s iterator adapters to make constructing keyword objects easier: ```js itt(['class', 'def', 'if']) .map(k => ['kw-' + k, k]) .toObject() ``` States ------ Moo allows you to define multiple lexer **states**. Each state defines its own separate set of token rules. Your lexer will start off in the first state given to `moo.states({})`. Rules can be annotated with `next`, `push`, and `pop`, to change the current state after that token is matched. A "stack" of past states is kept, which is used by `push` and `pop`. * **`next: 'bar'`** moves to the state named `bar`. (The stack is not changed.) * **`push: 'bar'`** moves to the state named `bar`, and pushes the old state onto the stack. * **`pop: 1`** removes one state from the top of the stack, and moves to that state. (Only `1` is supported.) Only rules from the current state can be matched. You need to copy your rule into all the states you want it to be matched in. For example, to tokenize JS-style string interpolation such as `a${{c: d}}e`, you might use: ```js let lexer = moo.states({ main: { strstart: {match: '`', push: 'lit'}, ident: /\w+/, lbrace: {match: '{', push: 'main'}, rbrace: {match: '}', pop: true}, colon: ':', space: {match: /\s+/, lineBreaks: true}, }, lit: { interp: {match: '${', push: 'main'}, escape: /\\./, strend: {match: '`', pop: true}, const: {match: /(?:[^$`]|\$(?!\{))+/, lineBreaks: true}, }, }) // <= `a${{c: d}}e` // => strstart const interp lbrace ident colon space ident rbrace rbrace const strend ``` The `rbrace` rule is annotated with `pop`, so it moves from the `main` state into either `lit` or `main`, depending on the stack. Errors ------ If none of your rules match, Moo will throw an Error; since it doesn't know what else to do. If you prefer, you can have moo return an error token instead of throwing an exception. The error token will contain the whole of the rest of the buffer. ```js moo.compile({ // ... myError: moo.error, }) moo.reset('invalid') moo.next() // -> { type: 'myError', value: 'invalid', text: 'invalid', offset: 0, lineBreaks: 0, line: 1, col: 1 } moo.next() // -> undefined ``` You can have a token type that both matches tokens _and_ contains error values. ```js moo.compile({ // ... myError: {match: /[\$?`]/, error: true}, }) ``` ### Formatting errors ### If you want to throw an error from your parser, you might find `formatError` helpful. Call it with the offending token: ```js throw new Error(lexer.formatError(token, "invalid syntax")) ``` It returns a string with a pretty error message. ``` Error: invalid syntax at line 2 col 15: totally valid `syntax` ^ ``` Iteration --------- Iterators: we got 'em. ```js for (let here of lexer) { // here = { type: 'number', value: '123', ... } } ``` Create an array of tokens. ```js let tokens = Array.from(lexer); ``` Use [itt](https://github.com/nathan/itt)'s iteration tools with Moo. ```js for (let [here, next] = itt(lexer).lookahead()) { // pass a number if you need more tokens // enjoy! } ``` Transform --------- Moo doesn't allow capturing groups, but you can supply a transform function, `value()`, which will be called on the value before storing it in the Token object. ```js moo.compile({ STRING: [ {match: /"""[^]*?"""/, lineBreaks: true, value: x => x.slice(3, -3)}, {match: /"(?:\\["\\rn]|[^"\\])*?"/, lineBreaks: true, value: x => x.slice(1, -1)}, {match: /'(?:\\['\\rn]|[^'\\])*?'/, lineBreaks: true, value: x => x.slice(1, -1)}, ], // ... }) ``` Contributing ------------ Do check the [FAQ](https://github.com/tjvr/moo/issues?q=label%3Aquestion). Before submitting an issue, [remember...](https://github.com/tjvr/moo/blob/master/.github/CONTRIBUTING.md) binaryen.js =========== **binaryen.js** is a port of [Binaryen](https://github.com/WebAssembly/binaryen) to the Web, allowing you to generate [WebAssembly](https://webassembly.org) using a JavaScript API. <a href="https://github.com/AssemblyScript/binaryen.js/actions?query=workflow%3ABuild"><img src="https://img.shields.io/github/workflow/status/AssemblyScript/binaryen.js/Build/master?label=build&logo=github" alt="Build status" /></a> <a href="https://www.npmjs.com/package/binaryen"><img src="https://img.shields.io/npm/v/binaryen.svg?label=latest&color=007acc&logo=npm" alt="npm version" /></a> <a href="https://www.npmjs.com/package/binaryen"><img src="https://img.shields.io/npm/v/binaryen/nightly.svg?label=nightly&color=007acc&logo=npm" alt="npm nightly version" /></a> Usage ----- ``` $> npm install binaryen ``` ```js var binaryen = require("binaryen"); // Create a module with a single function var myModule = new binaryen.Module(); myModule.addFunction("add", binaryen.createType([ binaryen.i32, binaryen.i32 ]), binaryen.i32, [ binaryen.i32 ], myModule.block(null, [ myModule.local.set(2, myModule.i32.add( myModule.local.get(0, binaryen.i32), myModule.local.get(1, binaryen.i32) ) ), myModule.return( myModule.local.get(2, binaryen.i32) ) ]) ); myModule.addFunctionExport("add", "add"); // Optimize the module using default passes and levels myModule.optimize(); // Validate the module if (!myModule.validate()) throw new Error("validation error"); // Generate text format and binary var textData = myModule.emitText(); var wasmData = myModule.emitBinary(); // Example usage with the WebAssembly API var compiled = new WebAssembly.Module(wasmData); var instance = new WebAssembly.Instance(compiled, {}); console.log(instance.exports.add(41, 1)); ``` The buildbot also publishes nightly versions once a day if there have been changes. The latest nightly can be installed through ``` $> npm install binaryen@nightly ``` or you can use one of the [previous versions](https://github.com/AssemblyScript/binaryen.js/tags) instead if necessary. ### Usage with a CDN * From GitHub via [jsDelivr](https://www.jsdelivr.com):<br /> `https://cdn.jsdelivr.net/gh/AssemblyScript/binaryen.js@VERSION/index.js` * From npm via [jsDelivr](https://www.jsdelivr.com):<br /> `https://cdn.jsdelivr.net/npm/binaryen@VERSION/index.js` * From npm via [unpkg](https://unpkg.com):<br /> `https://unpkg.com/binaryen@VERSION/index.js` Replace `VERSION` with a [specific version](https://github.com/AssemblyScript/binaryen.js/releases) or omit it (not recommended in production) to use master/latest. API --- **Please note** that the Binaryen API is evolving fast and that definitions and documentation provided by the package tend to get out of sync despite our best efforts. It's a bot after all. If you rely on binaryen.js and spot an issue, please consider sending a PR our way by updating [index.d.ts](./index.d.ts) and [README.md](./README.md) to reflect the [current API](https://github.com/WebAssembly/binaryen/blob/master/src/js/binaryen.js-post.js). <!-- START doctoc generated TOC please keep comment here to allow auto update --> <!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE --> ### Contents - [Types](#types) - [Module construction](#module-construction) - [Module manipulation](#module-manipulation) - [Module validation](#module-validation) - [Module optimization](#module-optimization) - [Module creation](#module-creation) - [Expression construction](#expression-construction) - [Control flow](#control-flow) - [Variable accesses](#variable-accesses) - [Integer operations](#integer-operations) - [Floating point operations](#floating-point-operations) - [Datatype conversions](#datatype-conversions) - [Function calls](#function-calls) - [Linear memory accesses](#linear-memory-accesses) - [Host operations](#host-operations) - [Vector operations 🦄](#vector-operations-) - [Atomic memory accesses 🦄](#atomic-memory-accesses-) - [Atomic read-modify-write operations 🦄](#atomic-read-modify-write-operations-) - [Atomic wait and notify operations 🦄](#atomic-wait-and-notify-operations-) - [Sign extension operations 🦄](#sign-extension-operations-) - [Multi-value operations 🦄](#multi-value-operations-) - [Exception handling operations 🦄](#exception-handling-operations-) - [Reference types operations 🦄](#reference-types-operations-) - [Expression manipulation](#expression-manipulation) - [Relooper](#relooper) - [Source maps](#source-maps) - [Debugging](#debugging) <!-- END doctoc generated TOC please keep comment here to allow auto update --> [Future features](http://webassembly.org/docs/future-features/) 🦄 might not be supported by all runtimes. ### Types * **none**: `Type`<br /> The none type, e.g., `void`. * **i32**: `Type`<br /> 32-bit integer type. * **i64**: `Type`<br /> 64-bit integer type. * **f32**: `Type`<br /> 32-bit float type. * **f64**: `Type`<br /> 64-bit float (double) type. * **v128**: `Type`<br /> 128-bit vector type. 🦄 * **funcref**: `Type`<br /> A function reference. 🦄 * **anyref**: `Type`<br /> Any host reference. 🦄 * **nullref**: `Type`<br /> A null reference. 🦄 * **exnref**: `Type`<br /> An exception reference. 🦄 * **unreachable**: `Type`<br /> Special type indicating unreachable code when obtaining information about an expression. * **auto**: `Type`<br /> Special type used in **Module#block** exclusively. Lets the API figure out a block's result type automatically. * **createType**(types: `Type[]`): `Type`<br /> Creates a multi-value type from an array of types. * **expandType**(type: `Type`): `Type[]`<br /> Expands a multi-value type to an array of types. ### Module construction * new **Module**()<br /> Constructs a new module. * **parseText**(text: `string`): `Module`<br /> Creates a module from Binaryen's s-expression text format (not official stack-style text format). * **readBinary**(data: `Uint8Array`): `Module`<br /> Creates a module from binary data. ### Module manipulation * Module#**addFunction**(name: `string`, params: `Type`, results: `Type`, vars: `Type[]`, body: `ExpressionRef`): `FunctionRef`<br /> Adds a function. `vars` indicate additional locals, in the given order. * Module#**getFunction**(name: `string`): `FunctionRef`<br /> Gets a function, by name, * Module#**removeFunction**(name: `string`): `void`<br /> Removes a function, by name. * Module#**getNumFunctions**(): `number`<br /> Gets the number of functions within the module. * Module#**getFunctionByIndex**(index: `number`): `FunctionRef`<br /> Gets the function at the specified index. * Module#**addFunctionImport**(internalName: `string`, externalModuleName: `string`, externalBaseName: `string`, params: `Type`, results: `Type`): `void`<br /> Adds a function import. * Module#**addTableImport**(internalName: `string`, externalModuleName: `string`, externalBaseName: `string`): `void`<br /> Adds a table import. There's just one table for now, using name `"0"`. * Module#**addMemoryImport**(internalName: `string`, externalModuleName: `string`, externalBaseName: `string`): `void`<br /> Adds a memory import. There's just one memory for now, using name `"0"`. * Module#**addGlobalImport**(internalName: `string`, externalModuleName: `string`, externalBaseName: `string`, globalType: `Type`): `void`<br /> Adds a global variable import. Imported globals must be immutable. * Module#**addFunctionExport**(internalName: `string`, externalName: `string`): `ExportRef`<br /> Adds a function export. * Module#**addTableExport**(internalName: `string`, externalName: `string`): `ExportRef`<br /> Adds a table export. There's just one table for now, using name `"0"`. * Module#**addMemoryExport**(internalName: `string`, externalName: `string`): `ExportRef`<br /> Adds a memory export. There's just one memory for now, using name `"0"`. * Module#**addGlobalExport**(internalName: `string`, externalName: `string`): `ExportRef`<br /> Adds a global variable export. Exported globals must be immutable. * Module#**getNumExports**(): `number`<br /> Gets the number of exports witin the module. * Module#**getExportByIndex**(index: `number`): `ExportRef`<br /> Gets the export at the specified index. * Module#**removeExport**(externalName: `string`): `void`<br /> Removes an export, by external name. * Module#**addGlobal**(name: `string`, type: `Type`, mutable: `number`, value: `ExpressionRef`): `GlobalRef`<br /> Adds a global instance variable. * Module#**getGlobal**(name: `string`): `GlobalRef`<br /> Gets a global, by name, * Module#**removeGlobal**(name: `string`): `void`<br /> Removes a global, by name. * Module#**setFunctionTable**(initial: `number`, maximum: `number`, funcs: `string[]`, offset?: `ExpressionRef`): `void`<br /> Sets the contents of the function table. There's just one table for now, using name `"0"`. * Module#**getFunctionTable**(): `{ imported: boolean, segments: TableElement[] }`<br /> Gets the contents of the function table. * TableElement#**offset**: `ExpressionRef` * TableElement#**names**: `string[]` * Module#**setMemory**(initial: `number`, maximum: `number`, exportName: `string | null`, segments: `MemorySegment[]`, flags?: `number[]`, shared?: `boolean`): `void`<br /> Sets the memory. There's just one memory for now, using name `"0"`. Providing `exportName` also creates a memory export. * MemorySegment#**offset**: `ExpressionRef` * MemorySegment#**data**: `Uint8Array` * MemorySegment#**passive**: `boolean` * Module#**getNumMemorySegments**(): `number`<br /> Gets the number of memory segments within the module. * Module#**getMemorySegmentInfoByIndex**(index: `number`): `MemorySegmentInfo`<br /> Gets information about the memory segment at the specified index. * MemorySegmentInfo#**offset**: `number` * MemorySegmentInfo#**data**: `Uint8Array` * MemorySegmentInfo#**passive**: `boolean` * Module#**setStart**(start: `FunctionRef`): `void`<br /> Sets the start function. * Module#**getFeatures**(): `Features`<br /> Gets the WebAssembly features enabled for this module. Note that the return value may be a bitmask indicating multiple features. Possible feature flags are: * Features.**MVP**: `Features` * Features.**Atomics**: `Features` * Features.**BulkMemory**: `Features` * Features.**MutableGlobals**: `Features` * Features.**NontrappingFPToInt**: `Features` * Features.**SignExt**: `Features` * Features.**SIMD128**: `Features` * Features.**ExceptionHandling**: `Features` * Features.**TailCall**: `Features` * Features.**ReferenceTypes**: `Features` * Features.**Multivalue**: `Features` * Features.**All**: `Features` * Module#**setFeatures**(features: `Features`): `void`<br /> Sets the WebAssembly features enabled for this module. * Module#**addCustomSection**(name: `string`, contents: `Uint8Array`): `void`<br /> Adds a custom section to the binary. * Module#**autoDrop**(): `void`<br /> Enables automatic insertion of `drop` operations where needed. Lets you not worry about dropping when creating your code. * **getFunctionInfo**(ftype: `FunctionRef`: `FunctionInfo`<br /> Obtains information about a function. * FunctionInfo#**name**: `string` * FunctionInfo#**module**: `string | null` (if imported) * FunctionInfo#**base**: `string | null` (if imported) * FunctionInfo#**params**: `Type` * FunctionInfo#**results**: `Type` * FunctionInfo#**vars**: `Type` * FunctionInfo#**body**: `ExpressionRef` * **getGlobalInfo**(global: `GlobalRef`): `GlobalInfo`<br /> Obtains information about a global. * GlobalInfo#**name**: `string` * GlobalInfo#**module**: `string | null` (if imported) * GlobalInfo#**base**: `string | null` (if imported) * GlobalInfo#**type**: `Type` * GlobalInfo#**mutable**: `boolean` * GlobalInfo#**init**: `ExpressionRef` * **getExportInfo**(export_: `ExportRef`): `ExportInfo`<br /> Obtains information about an export. * ExportInfo#**kind**: `ExternalKind` * ExportInfo#**name**: `string` * ExportInfo#**value**: `string` Possible `ExternalKind` values are: * **ExternalFunction**: `ExternalKind` * **ExternalTable**: `ExternalKind` * **ExternalMemory**: `ExternalKind` * **ExternalGlobal**: `ExternalKind` * **ExternalEvent**: `ExternalKind` * **getEventInfo**(event: `EventRef`): `EventInfo`<br /> Obtains information about an event. * EventInfo#**name**: `string` * EventInfo#**module**: `string | null` (if imported) * EventInfo#**base**: `string | null` (if imported) * EventInfo#**attribute**: `number` * EventInfo#**params**: `Type` * EventInfo#**results**: `Type` * **getSideEffects**(expr: `ExpressionRef`, features: `FeatureFlags`): `SideEffects`<br /> Gets the side effects of the specified expression. * SideEffects.**None**: `SideEffects` * SideEffects.**Branches**: `SideEffects` * SideEffects.**Calls**: `SideEffects` * SideEffects.**ReadsLocal**: `SideEffects` * SideEffects.**WritesLocal**: `SideEffects` * SideEffects.**ReadsGlobal**: `SideEffects` * SideEffects.**WritesGlobal**: `SideEffects` * SideEffects.**ReadsMemory**: `SideEffects` * SideEffects.**WritesMemory**: `SideEffects` * SideEffects.**ImplicitTrap**: `SideEffects` * SideEffects.**IsAtomic**: `SideEffects` * SideEffects.**Throws**: `SideEffects` * SideEffects.**Any**: `SideEffects` ### Module validation * Module#**validate**(): `boolean`<br /> Validates the module. Returns `true` if valid, otherwise prints validation errors and returns `false`. ### Module optimization * Module#**optimize**(): `void`<br /> Optimizes the module using the default optimization passes. * Module#**optimizeFunction**(func: `FunctionRef | string`): `void`<br /> Optimizes a single function using the default optimization passes. * Module#**runPasses**(passes: `string[]`): `void`<br /> Runs the specified passes on the module. * Module#**runPassesOnFunction**(func: `FunctionRef | string`, passes: `string[]`): `void`<br /> Runs the specified passes on a single function. * **getOptimizeLevel**(): `number`<br /> Gets the currently set optimize level. `0`, `1`, `2` correspond to `-O0`, `-O1`, `-O2` (default), etc. * **setOptimizeLevel**(level: `number`): `void`<br /> Sets the optimization level to use. `0`, `1`, `2` correspond to `-O0`, `-O1`, `-O2` (default), etc. * **getShrinkLevel**(): `number`<br /> Gets the currently set shrink level. `0`, `1`, `2` correspond to `-O0`, `-Os` (default), `-Oz`. * **setShrinkLevel**(level: `number`): `void`<br /> Sets the shrink level to use. `0`, `1`, `2` correspond to `-O0`, `-Os` (default), `-Oz`. * **getDebugInfo**(): `boolean`<br /> Gets whether generating debug information is currently enabled or not. * **setDebugInfo**(on: `boolean`): `void`<br /> Enables or disables debug information in emitted binaries. * **getLowMemoryUnused**(): `boolean`<br /> Gets whether the low 1K of memory can be considered unused when optimizing. * **setLowMemoryUnused**(on: `boolean`): `void`<br /> Enables or disables whether the low 1K of memory can be considered unused when optimizing. * **getPassArgument**(key: `string`): `string | null`<br /> Gets the value of the specified arbitrary pass argument. * **setPassArgument**(key: `string`, value: `string | null`): `void`<br /> Sets the value of the specified arbitrary pass argument. Removes the respective argument if `value` is `null`. * **clearPassArguments**(): `void`<br /> Clears all arbitrary pass arguments. * **getAlwaysInlineMaxSize**(): `number`<br /> Gets the function size at which we always inline. * **setAlwaysInlineMaxSize**(size: `number`): `void`<br /> Sets the function size at which we always inline. * **getFlexibleInlineMaxSize**(): `number`<br /> Gets the function size which we inline when functions are lightweight. * **setFlexibleInlineMaxSize**(size: `number`): `void`<br /> Sets the function size which we inline when functions are lightweight. * **getOneCallerInlineMaxSize**(): `number`<br /> Gets the function size which we inline when there is only one caller. * **setOneCallerInlineMaxSize**(size: `number`): `void`<br /> Sets the function size which we inline when there is only one caller. ### Module creation * Module#**emitBinary**(): `Uint8Array`<br /> Returns the module in binary format. * Module#**emitBinary**(sourceMapUrl: `string | null`): `BinaryWithSourceMap`<br /> Returns the module in binary format with its source map. If `sourceMapUrl` is `null`, source map generation is skipped. * BinaryWithSourceMap#**binary**: `Uint8Array` * BinaryWithSourceMap#**sourceMap**: `string | null` * Module#**emitText**(): `string`<br /> Returns the module in Binaryen's s-expression text format (not official stack-style text format). * Module#**emitAsmjs**(): `string`<br /> Returns the [asm.js](http://asmjs.org/) representation of the module. * Module#**dispose**(): `void`<br /> Releases the resources held by the module once it isn't needed anymore. ### Expression construction #### [Control flow](http://webassembly.org/docs/semantics/#control-constructs-and-instructions) * Module#**block**(label: `string | null`, children: `ExpressionRef[]`, resultType?: `Type`): `ExpressionRef`<br /> Creates a block. `resultType` defaults to `none`. * Module#**if**(condition: `ExpressionRef`, ifTrue: `ExpressionRef`, ifFalse?: `ExpressionRef`): `ExpressionRef`<br /> Creates an if or if/else combination. * Module#**loop**(label: `string | null`, body: `ExpressionRef`): `ExpressionRef`<br /> Creates a loop. * Module#**br**(label: `string`, condition?: `ExpressionRef`, value?: `ExpressionRef`): `ExpressionRef`<br /> Creates a branch (br) to a label. * Module#**switch**(labels: `string[]`, defaultLabel: `string`, condition: `ExpressionRef`, value?: `ExpressionRef`): `ExpressionRef`<br /> Creates a switch (br_table). * Module#**nop**(): `ExpressionRef`<br /> Creates a no-operation (nop) instruction. * Module#**return**(value?: `ExpressionRef`): `ExpressionRef` Creates a return. * Module#**unreachable**(): `ExpressionRef`<br /> Creates an [unreachable](http://webassembly.org/docs/semantics/#unreachable) instruction that will always trap. * Module#**drop**(value: `ExpressionRef`): `ExpressionRef`<br /> Creates a [drop](http://webassembly.org/docs/semantics/#type-parametric-operators) of a value. * Module#**select**(condition: `ExpressionRef`, ifTrue: `ExpressionRef`, ifFalse: `ExpressionRef`, type?: `Type`): `ExpressionRef`<br /> Creates a [select](http://webassembly.org/docs/semantics/#type-parametric-operators) of one of two values. #### [Variable accesses](http://webassembly.org/docs/semantics/#local-variables) * Module#**local.get**(index: `number`, type: `Type`): `ExpressionRef`<br /> Creates a local.get for the local at the specified index. Note that we must specify the type here as we may not have created the local being accessed yet. * Module#**local.set**(index: `number`, value: `ExpressionRef`): `ExpressionRef`<br /> Creates a local.set for the local at the specified index. * Module#**local.tee**(index: `number`, value: `ExpressionRef`, type: `Type`): `ExpressionRef`<br /> Creates a local.tee for the local at the specified index. A tee differs from a set in that the value remains on the stack. Note that we must specify the type here as we may not have created the local being accessed yet. * Module#**global.get**(name: `string`, type: `Type`): `ExpressionRef`<br /> Creates a global.get for the global with the specified name. Note that we must specify the type here as we may not have created the global being accessed yet. * Module#**global.set**(name: `string`, value: `ExpressionRef`): `ExpressionRef`<br /> Creates a global.set for the global with the specified name. #### [Integer operations](http://webassembly.org/docs/semantics/#32-bit-integer-operators) * Module#i32.**const**(value: `number`): `ExpressionRef` * Module#i32.**clz**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**ctz**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**popcnt**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**eqz**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**div_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**div_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**rem_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**rem_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**and**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**or**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**xor**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**shl**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**shr_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**shr_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**rotl**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**rotr**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**lt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**le_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**le_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**gt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**gt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**ge_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**ge_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` > * Module#i64.**const**(low: `number`, high: `number`): `ExpressionRef` * Module#i64.**clz**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**ctz**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**popcnt**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**eqz**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**div_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**div_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**rem_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**rem_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**and**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**or**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**xor**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**shl**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**shr_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**shr_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**rotl**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**rotr**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**lt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**le_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**le_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**gt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**gt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**ge_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**ge_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` #### [Floating point operations](http://webassembly.org/docs/semantics/#floating-point-operators) * Module#f32.**const**(value: `number`): `ExpressionRef` * Module#f32.**const_bits**(value: `number`): `ExpressionRef` * Module#f32.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**abs**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**ceil**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**floor**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**trunc**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**nearest**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**sqrt**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**div**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**copysign**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**min**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**max**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**lt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**le**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**gt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**ge**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` > * Module#f64.**const**(value: `number`): `ExpressionRef` * Module#f64.**const_bits**(value: `number`): `ExpressionRef` * Module#f64.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**abs**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**ceil**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**floor**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**trunc**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**nearest**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**sqrt**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**div**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**copysign**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**min**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**max**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**lt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**le**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**gt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**ge**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` #### [Datatype conversions](http://webassembly.org/docs/semantics/#datatype-conversions-truncations-reinterpretations-promotions-and-demotions) * Module#i32.**trunc_s.f32**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**trunc_s.f64**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**trunc_u.f32**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**trunc_u.f64**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**reinterpret**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**wrap**(value: `ExpressionRef`): `ExpressionRef` > * Module#i64.**trunc_s.f32**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**trunc_s.f64**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**trunc_u.f32**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**trunc_u.f64**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**reinterpret**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**extend_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**extend_u**(value: `ExpressionRef`): `ExpressionRef` > * Module#f32.**reinterpret**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**convert_s.i32**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**convert_s.i64**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**convert_u.i32**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**convert_u.i64**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**demote**(value: `ExpressionRef`): `ExpressionRef` > * Module#f64.**reinterpret**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**convert_s.i32**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**convert_s.i64**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**convert_u.i32**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**convert_u.i64**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**promote**(value: `ExpressionRef`): `ExpressionRef` #### [Function calls](http://webassembly.org/docs/semantics/#calls) * Module#**call**(name: `string`, operands: `ExpressionRef[]`, returnType: `Type`): `ExpressionRef` Creates a call to a function. Note that we must specify the return type here as we may not have created the function being called yet. * Module#**return_call**(name: `string`, operands: `ExpressionRef[]`, returnType: `Type`): `ExpressionRef`<br /> Like **call**, but creates a tail-call. 🦄 * Module#**call_indirect**(target: `ExpressionRef`, operands: `ExpressionRef[]`, params: `Type`, results: `Type`): `ExpressionRef`<br /> Similar to **call**, but calls indirectly, i.e., via a function pointer, so an expression replaces the name as the called value. * Module#**return_call_indirect**(target: `ExpressionRef`, operands: `ExpressionRef[]`, params: `Type`, results: `Type`): `ExpressionRef`<br /> Like **call_indirect**, but creates a tail-call. 🦄 #### [Linear memory accesses](http://webassembly.org/docs/semantics/#linear-memory-accesses) * Module#i32.**load**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**load8_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**load8_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**load16_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**load16_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**store**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**store8**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**store16**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef`<br /> > * Module#i64.**load**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load8_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load8_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load16_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load16_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load32_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load32_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**store**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**store8**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**store16**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**store32**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` > * Module#f32.**load**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#f32.**store**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` > * Module#f64.**load**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#f64.**store**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` #### [Host operations](http://webassembly.org/docs/semantics/#resizing) * Module#**memory.size**(): `ExpressionRef` * Module#**memory.grow**(value: `number`): `ExpressionRef` #### [Vector operations](https://github.com/WebAssembly/simd/blob/master/proposals/simd/SIMD.md) 🦄 * Module#v128.**const**(bytes: `Uint8Array`): `ExpressionRef` * Module#v128.**load**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#v128.**store**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#v128.**not**(value: `ExpressionRef`): `ExpressionRef` * Module#v128.**and**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#v128.**or**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#v128.**xor**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#v128.**andnot**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#v128.**bitselect**(left: `ExpressionRef`, right: `ExpressionRef`, cond: `ExpressionRef`): `ExpressionRef` > * Module#i8x16.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**extract_lane_s**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i8x16.**extract_lane_u**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i8x16.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**lt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**gt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**gt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**le_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**ge_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**ge_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**any_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**all_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**shl**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**shr_s**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**shr_u**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**add_saturate_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**add_saturate_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**sub_saturate_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**sub_saturate_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**min_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**min_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**max_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**max_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**avgr_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**narrow_i16x8_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**narrow_i16x8_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` > * Module#i16x8.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**extract_lane_s**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i16x8.**extract_lane_u**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i16x8.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**lt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**gt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**gt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**le_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**ge_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**ge_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**any_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**all_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**shl**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**shr_s**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**shr_u**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**add_saturate_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**add_saturate_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**sub_saturate_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**sub_saturate_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**min_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**min_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**max_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**max_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**avgr_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**narrow_i32x4_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**narrow_i32x4_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**widen_low_i8x16_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**widen_high_i8x16_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**widen_low_i8x16_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**widen_high_i8x16_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**load8x8_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**load8x8_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#i32x4.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**extract_lane_s**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i32x4.**extract_lane_u**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i32x4.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**lt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**gt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**gt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**le_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**ge_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**ge_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**any_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**all_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**shl**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**shr_s**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**shr_u**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**min_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**min_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**max_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**max_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**dot_i16x8_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**trunc_sat_f32x4_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**trunc_sat_f32x4_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**widen_low_i16x8_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**widen_high_i16x8_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**widen_low_i16x8_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**widen_high_i16x8_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**load16x4_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**load16x4_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#i64x2.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**extract_lane_s**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i64x2.**extract_lane_u**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i64x2.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**any_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**all_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**shl**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**shr_s**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**shr_u**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**trunc_sat_f64x2_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**trunc_sat_f64x2_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**load32x2_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**load32x2_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#f32x4.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**extract_lane**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#f32x4.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**lt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**gt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**le**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**ge**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**abs**(value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**sqrt**(value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**qfma**(a: `ExpressionRef`, b: `ExpressionRef`, c: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**qfms**(a: `ExpressionRef`, b: `ExpressionRef`, c: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**div**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**min**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**max**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**convert_i32x4_s**(value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**convert_i32x4_u**(value: `ExpressionRef`): `ExpressionRef` > * Module#f64x2.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**extract_lane**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#f64x2.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**lt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**gt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**le**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**ge**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**abs**(value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**sqrt**(value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**qfma**(a: `ExpressionRef`, b: `ExpressionRef`, c: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**qfms**(a: `ExpressionRef`, b: `ExpressionRef`, c: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**div**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**min**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**max**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**convert_i64x2_s**(value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**convert_i64x2_u**(value: `ExpressionRef`): `ExpressionRef` > * Module#v8x16.**shuffle**(left: `ExpressionRef`, right: `ExpressionRef`, mask: `Uint8Array`): `ExpressionRef` * Module#v8x16.**swizzle**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#v8x16.**load_splat**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#v16x8.**load_splat**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#v32x4.**load_splat**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#v64x2.**load_splat**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` #### [Atomic memory accesses](https://github.com/WebAssembly/threads/blob/master/proposals/threads/Overview.md#atomic-memory-accesses) 🦄 * Module#i32.**atomic.load**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.load8_u**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.load16_u**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.store**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.store8**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.store16**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` > * Module#i64.**atomic.load**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.load8_u**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.load16_u**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.load32_u**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.store**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.store8**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.store16**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.store32**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` #### [Atomic read-modify-write operations](https://github.com/WebAssembly/threads/blob/master/proposals/threads/Overview.md#read-modify-write) 🦄 * Module#i32.**atomic.rmw.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` > * Module#i64.**atomic.rmw.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` #### [Atomic wait and notify operations](https://github.com/WebAssembly/threads/blob/master/proposals/threads/Overview.md#wait-and-notify-operators) 🦄 * Module#i32.**atomic.wait**(ptr: `ExpressionRef`, expected: `ExpressionRef`, timeout: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.wait**(ptr: `ExpressionRef`, expected: `ExpressionRef`, timeout: `ExpressionRef`): `ExpressionRef` * Module#**atomic.notify**(ptr: `ExpressionRef`, notifyCount: `ExpressionRef`): `ExpressionRef` * Module#**atomic.fence**(): `ExpressionRef` #### [Sign extension operations](https://github.com/WebAssembly/sign-extension-ops/blob/master/proposals/sign-extension-ops/Overview.md) 🦄 * Module#i32.**extend8_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**extend16_s**(value: `ExpressionRef`): `ExpressionRef` > * Module#i64.**extend8_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**extend16_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**extend32_s**(value: `ExpressionRef`): `ExpressionRef` #### [Multi-value operations](https://github.com/WebAssembly/multi-value/blob/master/proposals/multi-value/Overview.md) 🦄 Note that these are pseudo instructions enabling Binaryen to reason about multiple values on the stack. * Module#**push**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**pop**(): `ExpressionRef` * Module#i64.**pop**(): `ExpressionRef` * Module#f32.**pop**(): `ExpressionRef` * Module#f64.**pop**(): `ExpressionRef` * Module#v128.**pop**(): `ExpressionRef` * Module#funcref.**pop**(): `ExpressionRef` * Module#anyref.**pop**(): `ExpressionRef` * Module#nullref.**pop**(): `ExpressionRef` * Module#exnref.**pop**(): `ExpressionRef` * Module#tuple.**make**(elements: `ExpressionRef[]`): `ExpressionRef` * Module#tuple.**extract**(tuple: `ExpressionRef`, index: `number`): `ExpressionRef` #### [Exception handling operations](https://github.com/WebAssembly/exception-handling/blob/master/proposals/Exceptions.md) 🦄 * Module#**try**(body: `ExpressionRef`, catchBody: `ExpressionRef`): `ExpressionRef` * Module#**throw**(event: `string`, operands: `ExpressionRef[]`): `ExpressionRef` * Module#**rethrow**(exnref: `ExpressionRef`): `ExpressionRef` * Module#**br_on_exn**(label: `string`, event: `string`, exnref: `ExpressionRef`): `ExpressionRef` > * Module#**addEvent**(name: `string`, attribute: `number`, params: `Type`, results: `Type`): `Event` * Module#**getEvent**(name: `string`): `Event` * Module#**removeEvent**(name: `stirng`): `void` * Module#**addEventImport**(internalName: `string`, externalModuleName: `string`, externalBaseName: `string`, attribute: `number`, params: `Type`, results: `Type`): `void` * Module#**addEventExport**(internalName: `string`, externalName: `string`): `ExportRef` #### [Reference types operations](https://github.com/WebAssembly/reference-types/blob/master/proposals/reference-types/Overview.md) 🦄 * Module#ref.**null**(): `ExpressionRef` * Module#ref.**is_null**(value: `ExpressionRef`): `ExpressionRef` * Module#ref.**func**(name: `string`): `ExpressionRef` ### Expression manipulation * **getExpressionId**(expr: `ExpressionRef`): `ExpressionId`<br /> Gets the id (kind) of the specified expression. Possible values are: * **InvalidId**: `ExpressionId` * **BlockId**: `ExpressionId` * **IfId**: `ExpressionId` * **LoopId**: `ExpressionId` * **BreakId**: `ExpressionId` * **SwitchId**: `ExpressionId` * **CallId**: `ExpressionId` * **CallIndirectId**: `ExpressionId` * **LocalGetId**: `ExpressionId` * **LocalSetId**: `ExpressionId` * **GlobalGetId**: `ExpressionId` * **GlobalSetId**: `ExpressionId` * **LoadId**: `ExpressionId` * **StoreId**: `ExpressionId` * **ConstId**: `ExpressionId` * **UnaryId**: `ExpressionId` * **BinaryId**: `ExpressionId` * **SelectId**: `ExpressionId` * **DropId**: `ExpressionId` * **ReturnId**: `ExpressionId` * **HostId**: `ExpressionId` * **NopId**: `ExpressionId` * **UnreachableId**: `ExpressionId` * **AtomicCmpxchgId**: `ExpressionId` * **AtomicRMWId**: `ExpressionId` * **AtomicWaitId**: `ExpressionId` * **AtomicNotifyId**: `ExpressionId` * **AtomicFenceId**: `ExpressionId` * **SIMDExtractId**: `ExpressionId` * **SIMDReplaceId**: `ExpressionId` * **SIMDShuffleId**: `ExpressionId` * **SIMDTernaryId**: `ExpressionId` * **SIMDShiftId**: `ExpressionId` * **SIMDLoadId**: `ExpressionId` * **MemoryInitId**: `ExpressionId` * **DataDropId**: `ExpressionId` * **MemoryCopyId**: `ExpressionId` * **MemoryFillId**: `ExpressionId` * **RefNullId**: `ExpressionId` * **RefIsNullId**: `ExpressionId` * **RefFuncId**: `ExpressionId` * **TryId**: `ExpressionId` * **ThrowId**: `ExpressionId` * **RethrowId**: `ExpressionId` * **BrOnExnId**: `ExpressionId` * **PushId**: `ExpressionId` * **PopId**: `ExpressionId` * **getExpressionType**(expr: `ExpressionRef`): `Type`<br /> Gets the type of the specified expression. * **getExpressionInfo**(expr: `ExpressionRef`): `ExpressionInfo`<br /> Obtains information about an expression, always including: * Info#**id**: `ExpressionId` * Info#**type**: `Type` Additional properties depend on the expression's `id` and are usually equivalent to the respective parameters when creating such an expression: * BlockInfo#**name**: `string` * BlockInfo#**children**: `ExpressionRef[]` > * IfInfo#**condition**: `ExpressionRef` * IfInfo#**ifTrue**: `ExpressionRef` * IfInfo#**ifFalse**: `ExpressionRef | null` > * LoopInfo#**name**: `string` * LoopInfo#**body**: `ExpressionRef` > * BreakInfo#**name**: `string` * BreakInfo#**condition**: `ExpressionRef | null` * BreakInfo#**value**: `ExpressionRef | null` > * SwitchInfo#**names**: `string[]` * SwitchInfo#**defaultName**: `string | null` * SwitchInfo#**condition**: `ExpressionRef` * SwitchInfo#**value**: `ExpressionRef | null` > * CallInfo#**target**: `string` * CallInfo#**operands**: `ExpressionRef[]` > * CallImportInfo#**target**: `string` * CallImportInfo#**operands**: `ExpressionRef[]` > * CallIndirectInfo#**target**: `ExpressionRef` * CallIndirectInfo#**operands**: `ExpressionRef[]` > * LocalGetInfo#**index**: `number` > * LocalSetInfo#**isTee**: `boolean` * LocalSetInfo#**index**: `number` * LocalSetInfo#**value**: `ExpressionRef` > * GlobalGetInfo#**name**: `string` > * GlobalSetInfo#**name**: `string` * GlobalSetInfo#**value**: `ExpressionRef` > * LoadInfo#**isAtomic**: `boolean` * LoadInfo#**isSigned**: `boolean` * LoadInfo#**offset**: `number` * LoadInfo#**bytes**: `number` * LoadInfo#**align**: `number` * LoadInfo#**ptr**: `ExpressionRef` > * StoreInfo#**isAtomic**: `boolean` * StoreInfo#**offset**: `number` * StoreInfo#**bytes**: `number` * StoreInfo#**align**: `number` * StoreInfo#**ptr**: `ExpressionRef` * StoreInfo#**value**: `ExpressionRef` > * ConstInfo#**value**: `number | { low: number, high: number }` > * UnaryInfo#**op**: `number` * UnaryInfo#**value**: `ExpressionRef` > * BinaryInfo#**op**: `number` * BinaryInfo#**left**: `ExpressionRef` * BinaryInfo#**right**: `ExpressionRef` > * SelectInfo#**ifTrue**: `ExpressionRef` * SelectInfo#**ifFalse**: `ExpressionRef` * SelectInfo#**condition**: `ExpressionRef` > * DropInfo#**value**: `ExpressionRef` > * ReturnInfo#**value**: `ExpressionRef | null` > * NopInfo > * UnreachableInfo > * HostInfo#**op**: `number` * HostInfo#**nameOperand**: `string | null` * HostInfo#**operands**: `ExpressionRef[]` > * AtomicRMWInfo#**op**: `number` * AtomicRMWInfo#**bytes**: `number` * AtomicRMWInfo#**offset**: `number` * AtomicRMWInfo#**ptr**: `ExpressionRef` * AtomicRMWInfo#**value**: `ExpressionRef` > * AtomicCmpxchgInfo#**bytes**: `number` * AtomicCmpxchgInfo#**offset**: `number` * AtomicCmpxchgInfo#**ptr**: `ExpressionRef` * AtomicCmpxchgInfo#**expected**: `ExpressionRef` * AtomicCmpxchgInfo#**replacement**: `ExpressionRef` > * AtomicWaitInfo#**ptr**: `ExpressionRef` * AtomicWaitInfo#**expected**: `ExpressionRef` * AtomicWaitInfo#**timeout**: `ExpressionRef` * AtomicWaitInfo#**expectedType**: `Type` > * AtomicNotifyInfo#**ptr**: `ExpressionRef` * AtomicNotifyInfo#**notifyCount**: `ExpressionRef` > * AtomicFenceInfo > * SIMDExtractInfo#**op**: `Op` * SIMDExtractInfo#**vec**: `ExpressionRef` * SIMDExtractInfo#**index**: `ExpressionRef` > * SIMDReplaceInfo#**op**: `Op` * SIMDReplaceInfo#**vec**: `ExpressionRef` * SIMDReplaceInfo#**index**: `ExpressionRef` * SIMDReplaceInfo#**value**: `ExpressionRef` > * SIMDShuffleInfo#**left**: `ExpressionRef` * SIMDShuffleInfo#**right**: `ExpressionRef` * SIMDShuffleInfo#**mask**: `Uint8Array` > * SIMDTernaryInfo#**op**: `Op` * SIMDTernaryInfo#**a**: `ExpressionRef` * SIMDTernaryInfo#**b**: `ExpressionRef` * SIMDTernaryInfo#**c**: `ExpressionRef` > * SIMDShiftInfo#**op**: `Op` * SIMDShiftInfo#**vec**: `ExpressionRef` * SIMDShiftInfo#**shift**: `ExpressionRef` > * SIMDLoadInfo#**op**: `Op` * SIMDLoadInfo#**offset**: `number` * SIMDLoadInfo#**align**: `number` * SIMDLoadInfo#**ptr**: `ExpressionRef` > * MemoryInitInfo#**segment**: `number` * MemoryInitInfo#**dest**: `ExpressionRef` * MemoryInitInfo#**offset**: `ExpressionRef` * MemoryInitInfo#**size**: `ExpressionRef` > * MemoryDropInfo#**segment**: `number` > * MemoryCopyInfo#**dest**: `ExpressionRef` * MemoryCopyInfo#**source**: `ExpressionRef` * MemoryCopyInfo#**size**: `ExpressionRef` > * MemoryFillInfo#**dest**: `ExpressionRef` * MemoryFillInfo#**value**: `ExpressionRef` * MemoryFillInfo#**size**: `ExpressionRef` > * TryInfo#**body**: `ExpressionRef` * TryInfo#**catchBody**: `ExpressionRef` > * RefNullInfo > * RefIsNullInfo#**value**: `ExpressionRef` > * RefFuncInfo#**func**: `string` > * ThrowInfo#**event**: `string` * ThrowInfo#**operands**: `ExpressionRef[]` > * RethrowInfo#**exnref**: `ExpressionRef` > * BrOnExnInfo#**name**: `string` * BrOnExnInfo#**event**: `string` * BrOnExnInfo#**exnref**: `ExpressionRef` > * PopInfo > * PushInfo#**value**: `ExpressionRef` * **emitText**(expression: `ExpressionRef`): `string`<br /> Emits the expression in Binaryen's s-expression text format (not official stack-style text format). * **copyExpression**(expression: `ExpressionRef`): `ExpressionRef`<br /> Creates a deep copy of an expression. ### Relooper * new **Relooper**()<br /> Constructs a relooper instance. This lets you provide an arbitrary CFG, and the relooper will structure it for WebAssembly. * Relooper#**addBlock**(code: `ExpressionRef`): `RelooperBlockRef`<br /> Adds a new block to the CFG, containing the provided code as its body. * Relooper#**addBranch**(from: `RelooperBlockRef`, to: `RelooperBlockRef`, condition: `ExpressionRef`, code: `ExpressionRef`): `void`<br /> Adds a branch from a block to another block, with a condition (or nothing, if this is the default branch to take from the origin - each block must have one such branch), and optional code to execute on the branch (useful for phis). * Relooper#**addBlockWithSwitch**(code: `ExpressionRef`, condition: `ExpressionRef`): `RelooperBlockRef`<br /> Adds a new block, which ends with a switch/br_table, with provided code and condition (that determines where we go in the switch). * Relooper#**addBranchForSwitch**(from: `RelooperBlockRef`, to: `RelooperBlockRef`, indexes: `number[]`, code: `ExpressionRef`): `void`<br /> Adds a branch from a block ending in a switch, to another block, using an array of indexes that determine where to go, and optional code to execute on the branch. * Relooper#**renderAndDispose**(entry: `RelooperBlockRef`, labelHelper: `number`, module: `Module`): `ExpressionRef`<br /> Renders and cleans up the Relooper instance. Call this after you have created all the blocks and branches, giving it the entry block (where control flow begins), a label helper variable (an index of a local we can use, necessary for irreducible control flow), and the module. This returns an expression - normal WebAssembly code - that you can use normally anywhere. ### Source maps * Module#**addDebugInfoFileName**(filename: `string`): `number`<br /> Adds a debug info file name to the module and returns its index. * Module#**getDebugInfoFileName**(index: `number`): `string | null` <br /> Gets the name of the debug info file at the specified index. * Module#**setDebugLocation**(func: `FunctionRef`, expr: `ExpressionRef`, fileIndex: `number`, lineNumber: `number`, columnNumber: `number`): `void`<br /> Sets the debug location of the specified `ExpressionRef` within the specified `FunctionRef`. ### Debugging * Module#**interpret**(): `void`<br /> Runs the module in the interpreter, calling the start function. [![npm version][npm-image]][npm-url] [![build status][travis-image]][travis-url] # u2f-api U2F API for browsers ## API ### Support U2F has for a long time been supported in Chrome, although not with the standard `window.u2f` methods, but through a built-in extension. Nowadays, browsers seem to use `window.u2f` to expose the functionality. Supported browsers are: * Chrome, using Chrome-specific hacks * Opera, using Chrome-specific hacks Firefox, Safari and other browsers still lack U2F support. Since 0.1.0, this library supports the standard `window.u2f` methods. The library should be complemented with server-side functionality, e.g. using the [`u2f`](https://www.npmjs.com/package/u2f) package. ### Basics `u2f-api` exports two main functions and an error "enum". The main functions are `register()` and `sign()`, although since U2F isn't widely supported, the functions `isSupported()` as well as `ensureSupport()` helps you build applications which can use U2F only when the client supports it. The `register()` and `sign()` functions return *cancellable promises*, i.e. promises you can cancel manually. This helps you to ensure your code doesn't continue in success flow and by mistake accept a registration or authentification request. The returned promise has a function `cancel()` which will immediately reject the promise. #### Check or ensure support ```ts import { isSupported } from 'u2f-api' isSupported(): Promise< Boolean > // Doesn't throw/reject ``` ```ts import { ensureSupport } from 'u2f-api' ensureSupport(): Promise< void > // Throws/rejects if not supported ``` #### Register ```ts import { register } from 'u2f-api' register( registerRequests: RegisterRequest[], signRequests: SignRequest[], // optional timeout: number // optional ): Promise< RegisterResponse > ``` The `registerRequests` can be either a RegisterRequest or an array of such. The optional `signRequests` must be, unless ignored, an array of SignRequests. The optional `timeout` is in seconds, and will default to an implementation specific value, e.g. 30. #### Sign ```ts import { sign } from 'u2f-api' sign( signRequests: SignRequest[], timeout: number // optional ): Promise< SignResponse > ``` The values and interpretation of the arguments are the same as with `register( )`. #### Errors `register()` and `sign()` can return rejected promises. The rejection error is an `Error` object with a `metaData` property containing `code` and `type`. The `code` is a numerical value describing the type of the error, and `type` is the name of the error, as defined by the `ErrorCodes` enum in the "FIDO U2F Javascript API" specification. They are: ```js OK = 0 // u2f-api will never throw errors with this code OTHER_ERROR = 1 BAD_REQUEST = 2 CONFIGURATION_UNSUPPORTED = 3 DEVICE_INELIGIBLE = 4 TIMEOUT = 5 CANCELLED = -1 // Added by this library ``` ## Usage ### Loading the library The library is promisified and will use the built-in native promises of the browser, unless another promise library is injected. The following are valid ways to load the library: ```js var u2fApi = require( 'u2f-api' ); // Will use the native Promise // ... or var u2fApi = require( 'u2f-api' )( require( 'bluebird' ) ); // Will use bluebird for promises ``` ### Registering a passkey With `registerRequestsFromServer` somehow received from the server, the client code becomes: ```js u2fApi.register( registerRequestsFromServer ) .then( sendRegisterResponseToServer ) .catch( ... ); ``` ### Signing a passkey With `signRequestsFromServer` also received from the server somehow: ```js u2fApi.sign( signRequestsFromServer ) .then( sendSignResponseToServer ) .catch( ... ); ``` ### Example with checks for client support ```js u2fApi.isSupported( ) .then( function( supported ) { if ( supported ) { return u2fApi.sign( signRequestsFromServer ) .then( sendSignResponseToServer ); } else { ... // Other authentication method } } ) .catch( ... ); ``` ### Canceling As mentioned in the API section above, the returned promises from `register()` and `sign()` have a method `cancel()` which will cancel the request. This is nothing more than a helper function. ## Example implementation U2F is a *challenge-response protocol*. The server sends a `challenge` to the client, which responds with a `response`. This library is intended to be used in the client (the browser). There is another package intended for server-side: https://www.npmjs.com/package/u2f ## Common problems If you get `BAD_REQUEST`, the most common situations are that you either don't use `https` (which you must), or that the AppID doesn't match the server URI. In fact, the AppID must be exactly the base URI to your server (such as `https://your-server.com`), including the port if it isn't 443. For more information, please see https://developers.yubico.com/U2F/Libraries/Client_error_codes.html and https://developers.yubico.com/U2F/App_ID.html [npm-image]: https://img.shields.io/npm/v/u2f-api.svg [npm-url]: https://npmjs.org/package/u2f-api [travis-image]: https://img.shields.io/travis/grantila/u2f-api.svg [travis-url]: https://travis-ci.org/grantila/u2f-api # graceful-fs graceful-fs functions as a drop-in replacement for the fs module, making various improvements. The improvements are meant to normalize behavior across different platforms and environments, and to make filesystem access more resilient to errors. ## Improvements over [fs module](https://nodejs.org/api/fs.html) * Queues up `open` and `readdir` calls, and retries them once something closes if there is an EMFILE error from too many file descriptors. * fixes `lchmod` for Node versions prior to 0.6.2. * implements `fs.lutimes` if possible. Otherwise it becomes a noop. * ignores `EINVAL` and `EPERM` errors in `chown`, `fchown` or `lchown` if the user isn't root. * makes `lchmod` and `lchown` become noops, if not available. * retries reading a file if `read` results in EAGAIN error. On Windows, it retries renaming a file for up to one second if `EACCESS` or `EPERM` error occurs, likely because antivirus software has locked the directory. ## USAGE ```javascript // use just like fs var fs = require('graceful-fs') // now go and do stuff with it... fs.readFile('some-file-or-whatever', (err, data) => { // Do stuff here. }) ``` ## Sync methods This module cannot intercept or handle `EMFILE` or `ENFILE` errors from sync methods. If you use sync methods which open file descriptors then you are responsible for dealing with any errors. This is a known limitation, not a bug. ## Global Patching If you want to patch the global fs module (or any other fs-like module) you can do this: ```javascript // Make sure to read the caveat below. var realFs = require('fs') var gracefulFs = require('graceful-fs') gracefulFs.gracefulify(realFs) ``` This should only ever be done at the top-level application layer, in order to delay on EMFILE errors from any fs-using dependencies. You should **not** do this in a library, because it can cause unexpected delays in other parts of the program. ## Changes This module is fairly stable at this point, and used by a lot of things. That being said, because it implements a subtle behavior change in a core part of the node API, even modest changes can be extremely breaking, and the versioning is thus biased towards bumping the major when in doubt. The main change between major versions has been switching between providing a fully-patched `fs` module vs monkey-patching the node core builtin, and the approach by which a non-monkey-patched `fs` was created. The goal is to trade `EMFILE` errors for slower fs operations. So, if you try to open a zillion files, rather than crashing, `open` operations will be queued up and wait for something else to `close`. There are advantages to each approach. Monkey-patching the fs means that no `EMFILE` errors can possibly occur anywhere in your application, because everything is using the same core `fs` module, which is patched. However, it can also obviously cause undesirable side-effects, especially if the module is loaded multiple times. Implementing a separate-but-identical patched `fs` module is more surgical (and doesn't run the risk of patching multiple times), but also imposes the challenge of keeping in sync with the core module. The current approach loads the `fs` module, and then creates a lookalike object that has all the same methods, except a few that are patched. It is safe to use in all versions of Node from 0.8 through 7.0. ### v4 * Do not monkey-patch the fs module. This module may now be used as a drop-in dep, and users can opt into monkey-patching the fs builtin if their app requires it. ### v3 * Monkey-patch fs, because the eval approach no longer works on recent node. * fixed possible type-error throw if rename fails on windows * verify that we *never* get EMFILE errors * Ignore ENOSYS from chmod/chown * clarify that graceful-fs must be used as a drop-in ### v2.1.0 * Use eval rather than monkey-patching fs. * readdir: Always sort the results * win32: requeue a file if error has an OK status ### v2.0 * A return to monkey patching * wrap process.cwd ### v1.1 * wrap readFile * Wrap fs.writeFile. * readdir protection * Don't clobber the fs builtin * Handle fs.read EAGAIN errors by trying again * Expose the curOpen counter * No-op lchown/lchmod if not implemented * fs.rename patch only for win32 * Patch fs.rename to handle AV software on Windows * Close #4 Chown should not fail on einval or eperm if non-root * Fix isaacs/fstream#1 Only wrap fs one time * Fix #3 Start at 1024 max files, then back off on EMFILE * lutimes that doens't blow up on Linux * A full on-rewrite using a queue instead of just swallowing the EMFILE error * Wrap Read/Write streams as well ### 1.0 * Update engines for node 0.6 * Be lstat-graceful on Windows * first # node-tar [](https://travis-ci.org/npm/node-tar) [Fast](./benchmarks) and full-featured Tar for Node.js The API is designed to mimic the behavior of `tar(1)` on unix systems. If you are familiar with how tar works, most of this will hopefully be straightforward for you. If not, then hopefully this module can teach you useful unix skills that may come in handy someday :) ## Background A "tar file" or "tarball" is an archive of file system entries (directories, files, links, etc.) The name comes from "tape archive". If you run `man tar` on almost any Unix command line, you'll learn quite a bit about what it can do, and its history. Tar has 5 main top-level commands: * `c` Create an archive * `r` Replace entries within an archive * `u` Update entries within an archive (ie, replace if they're newer) * `t` List out the contents of an archive * `x` Extract an archive to disk The other flags and options modify how this top level function works. ## High-Level API These 5 functions are the high-level API. All of them have a single-character name (for unix nerds familiar with `tar(1)`) as well as a long name (for everyone else). All the high-level functions take the following arguments, all three of which are optional and may be omitted. 1. `options` - An optional object specifying various options 2. `paths` - An array of paths to add or extract 3. `callback` - Called when the command is completed, if async. (If sync or no file specified, providing a callback throws a `TypeError`.) If the command is sync (ie, if `options.sync=true`), then the callback is not allowed, since the action will be completed immediately. If a `file` argument is specified, and the command is async, then a `Promise` is returned. In this case, if async, a callback may be provided which is called when the command is completed. If a `file` option is not specified, then a stream is returned. For `create`, this is a readable stream of the generated archive. For `list` and `extract` this is a writable stream that an archive should be written into. If a file is not specified, then a callback is not allowed, because you're already getting a stream to work with. `replace` and `update` only work on existing archives, and so require a `file` argument. Sync commands without a file argument return a stream that acts on its input immediately in the same tick. For readable streams, this means that all of the data is immediately available by calling `stream.read()`. For writable streams, it will be acted upon as soon as it is provided, but this can be at any time. ### Warnings and Errors Tar emits warnings and errors for recoverable and unrecoverable situations, respectively. In many cases, a warning only affects a single entry in an archive, or is simply informing you that it's modifying an entry to comply with the settings provided. Unrecoverable warnings will always raise an error (ie, emit `'error'` on streaming actions, throw for non-streaming sync actions, reject the returned Promise for non-streaming async operations, or call a provided callback with an `Error` as the first argument). Recoverable errors will raise an error only if `strict: true` is set in the options. Respond to (recoverable) warnings by listening to the `warn` event. Handlers receive 3 arguments: - `code` String. One of the error codes below. This may not match `data.code`, which preserves the original error code from fs and zlib. - `message` String. More details about the error. - `data` Metadata about the error. An `Error` object for errors raised by fs and zlib. All fields are attached to errors raisd by tar. Typically contains the following fields, as relevant: - `tarCode` The tar error code. - `code` Either the tar error code, or the error code set by the underlying system. - `file` The archive file being read or written. - `cwd` Working directory for creation and extraction operations. - `entry` The entry object (if it could be created) for `TAR_ENTRY_INFO`, `TAR_ENTRY_INVALID`, and `TAR_ENTRY_ERROR` warnings. - `header` The header object (if it could be created, and the entry could not be created) for `TAR_ENTRY_INFO` and `TAR_ENTRY_INVALID` warnings. - `recoverable` Boolean. If `false`, then the warning will emit an `error`, even in non-strict mode. #### Error Codes * `TAR_ENTRY_INFO` An informative error indicating that an entry is being modified, but otherwise processed normally. For example, removing `/` or `C:\` from absolute paths if `preservePaths` is not set. * `TAR_ENTRY_INVALID` An indication that a given entry is not a valid tar archive entry, and will be skipped. This occurs when: - a checksum fails, - a `linkpath` is missing for a link type, or - a `linkpath` is provided for a non-link type. If every entry in a parsed archive raises an `TAR_ENTRY_INVALID` error, then the archive is presumed to be unrecoverably broken, and `TAR_BAD_ARCHIVE` will be raised. * `TAR_ENTRY_ERROR` The entry appears to be a valid tar archive entry, but encountered an error which prevented it from being unpacked. This occurs when: - an unrecoverable fs error happens during unpacking, - an entry has `..` in the path and `preservePaths` is not set, or - an entry is extracting through a symbolic link, when `preservePaths` is not set. * `TAR_ENTRY_UNSUPPORTED` An indication that a given entry is a valid archive entry, but of a type that is unsupported, and so will be skipped in archive creation or extracting. * `TAR_ABORT` When parsing gzipped-encoded archives, the parser will abort the parse process raise a warning for any zlib errors encountered. Aborts are considered unrecoverable for both parsing and unpacking. * `TAR_BAD_ARCHIVE` The archive file is totally hosed. This can happen for a number of reasons, and always occurs at the end of a parse or extract: - An entry body was truncated before seeing the full number of bytes. - The archive contained only invalid entries, indicating that it is likely not an archive, or at least, not an archive this library can parse. `TAR_BAD_ARCHIVE` is considered informative for parse operations, but unrecoverable for extraction. Note that, if encountered at the end of an extraction, tar WILL still have extracted as much it could from the archive, so there may be some garbage files to clean up. Errors that occur deeper in the system (ie, either the filesystem or zlib) will have their error codes left intact, and a `tarCode` matching one of the above will be added to the warning metadata or the raised error object. Errors generated by tar will have one of the above codes set as the `error.code` field as well, but since errors originating in zlib or fs will have their original codes, it's better to read `error.tarCode` if you wish to see how tar is handling the issue. ### Examples The API mimics the `tar(1)` command line functionality, with aliases for more human-readable option and function names. The goal is that if you know how to use `tar(1)` in Unix, then you know how to use `require('tar')` in JavaScript. To replicate `tar czf my-tarball.tgz files and folders`, you'd do: ```js tar.c( { gzip: <true|gzip options>, file: 'my-tarball.tgz' }, ['some', 'files', 'and', 'folders'] ).then(_ => { .. tarball has been created .. }) ``` To replicate `tar cz files and folders > my-tarball.tgz`, you'd do: ```js tar.c( // or tar.create { gzip: <true|gzip options> }, ['some', 'files', 'and', 'folders'] ).pipe(fs.createWriteStream('my-tarball.tgz')) ``` To replicate `tar xf my-tarball.tgz` you'd do: ```js tar.x( // or tar.extract( { file: 'my-tarball.tgz' } ).then(_=> { .. tarball has been dumped in cwd .. }) ``` To replicate `cat my-tarball.tgz | tar x -C some-dir --strip=1`: ```js fs.createReadStream('my-tarball.tgz').pipe( tar.x({ strip: 1, C: 'some-dir' // alias for cwd:'some-dir', also ok }) ) ``` To replicate `tar tf my-tarball.tgz`, do this: ```js tar.t({ file: 'my-tarball.tgz', onentry: entry => { .. do whatever with it .. } }) ``` To replicate `cat my-tarball.tgz | tar t` do: ```js fs.createReadStream('my-tarball.tgz') .pipe(tar.t()) .on('entry', entry => { .. do whatever with it .. }) ``` To do anything synchronous, add `sync: true` to the options. Note that sync functions don't take a callback and don't return a promise. When the function returns, it's already done. Sync methods without a file argument return a sync stream, which flushes immediately. But, of course, it still won't be done until you `.end()` it. To filter entries, add `filter: <function>` to the options. Tar-creating methods call the filter with `filter(path, stat)`. Tar-reading methods (including extraction) call the filter with `filter(path, entry)`. The filter is called in the `this`-context of the `Pack` or `Unpack` stream object. The arguments list to `tar t` and `tar x` specify a list of filenames to extract or list, so they're equivalent to a filter that tests if the file is in the list. For those who _aren't_ fans of tar's single-character command names: ``` tar.c === tar.create tar.r === tar.replace (appends to archive, file is required) tar.u === tar.update (appends if newer, file is required) tar.x === tar.extract tar.t === tar.list ``` Keep reading for all the command descriptions and options, as well as the low-level API that they are built on. ### tar.c(options, fileList, callback) [alias: tar.create] Create a tarball archive. The `fileList` is an array of paths to add to the tarball. Adding a directory also adds its children recursively. An entry in `fileList` that starts with an `@` symbol is a tar archive whose entries will be added. To add a file that starts with `@`, prepend it with `./`. The following options are supported: - `file` Write the tarball archive to the specified filename. If this is specified, then the callback will be fired when the file has been written, and a promise will be returned that resolves when the file is written. If a filename is not specified, then a Readable Stream will be returned which will emit the file data. [Alias: `f`] - `sync` Act synchronously. If this is set, then any provided file will be fully written after the call to `tar.c`. If this is set, and a file is not provided, then the resulting stream will already have the data ready to `read` or `emit('data')` as soon as you request it. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `strict` Treat warnings as crash-worthy errors. Default false. - `cwd` The current working directory for creating the archive. Defaults to `process.cwd()`. [Alias: `C`] - `prefix` A path portion to prefix onto the entries in the archive. - `gzip` Set to any truthy value to create a gzipped archive, or an object with settings for `zlib.Gzip()` [Alias: `z`] - `filter` A function that gets called with `(path, stat)` for each entry being added. Return `true` to add the entry to the archive, or `false` to omit it. - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. [Alias: `P`] - `mode` The mode to set on the created file archive - `noDirRecurse` Do not recursively archive the contents of directories. [Alias: `n`] - `follow` Set to true to pack the targets of symbolic links. Without this option, symbolic links are archived as such. [Alias: `L`, `h`] - `noPax` Suppress pax extended headers. Note that this means that long paths and linkpaths will be truncated, and large or negative numeric values may be interpreted incorrectly. - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. [Alias: `m`, `no-mtime`] - `mtime` Set to a `Date` object to force a specific `mtime` for everything added to the archive. Overridden by `noMtime`. The following options are mostly internal, but can be modified in some advanced use cases, such as re-using caches between runs. - `linkCache` A Map object containing the device and inode value for any file whose nlink is > 1, to identify hard links. - `statCache` A Map object that caches calls `lstat`. - `readdirCache` A Map object that caches calls to `readdir`. - `jobs` A number specifying how many concurrent jobs to run. Defaults to 4. - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 16 MB. ### tar.x(options, fileList, callback) [alias: tar.extract] Extract a tarball archive. The `fileList` is an array of paths to extract from the tarball. If no paths are provided, then all the entries are extracted. If the archive is gzipped, then tar will detect this and unzip it. Note that all directories that are created will be forced to be writable, readable, and listable by their owner, to avoid cases where a directory prevents extraction of child entries by virtue of its mode. Most extraction errors will cause a `warn` event to be emitted. If the `cwd` is missing, or not a directory, then the extraction will fail completely. The following options are supported: - `cwd` Extract files relative to the specified directory. Defaults to `process.cwd()`. If provided, this must exist and must be a directory. [Alias: `C`] - `file` The archive file to extract. If not specified, then a Writable stream is returned where the archive data should be written. [Alias: `f`] - `sync` Create files and directories synchronously. - `strict` Treat warnings as crash-worthy errors. Default false. - `filter` A function that gets called with `(path, entry)` for each entry being unpacked. Return `true` to unpack the entry from the archive, or `false` to skip it. - `newer` Set to true to keep the existing file on disk if it's newer than the file in the archive. [Alias: `keep-newer`, `keep-newer-files`] - `keep` Do not overwrite existing files. In particular, if a file appears more than once in an archive, later copies will not overwrite earlier copies. [Alias: `k`, `keep-existing`] - `preservePaths` Allow absolute paths, paths containing `..`, and extracting through symbolic links. By default, `/` is stripped from absolute paths, `..` paths are not extracted, and any file whose location would be modified by a symbolic link is not extracted. [Alias: `P`] - `unlink` Unlink files before creating them. Without this option, tar overwrites existing files, which preserves existing hardlinks. With this option, existing hardlinks will be broken, as will any symlink that would affect the location of an extracted file. [Alias: `U`] - `strip` Remove the specified number of leading path elements. Pathnames with fewer elements will be silently skipped. Note that the pathname is edited after applying the filter, but before security checks. [Alias: `strip-components`, `stripComponents`] - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `preserveOwner` If true, tar will set the `uid` and `gid` of extracted entries to the `uid` and `gid` fields in the archive. This defaults to true when run as root, and false otherwise. If false, then files and directories will be set with the owner and group of the user running the process. This is similar to `-p` in `tar(1)`, but ACLs and other system-specific data is never unpacked in this implementation, and modes are set by default already. [Alias: `p`] - `uid` Set to a number to force ownership of all extracted files and folders, and all implicitly created directories, to be owned by the specified user id, regardless of the `uid` field in the archive. Cannot be used along with `preserveOwner`. Requires also setting a `gid` option. - `gid` Set to a number to force ownership of all extracted files and folders, and all implicitly created directories, to be owned by the specified group id, regardless of the `gid` field in the archive. Cannot be used along with `preserveOwner`. Requires also setting a `uid` option. - `noMtime` Set to true to omit writing `mtime` value for extracted entries. [Alias: `m`, `no-mtime`] - `transform` Provide a function that takes an `entry` object, and returns a stream, or any falsey value. If a stream is provided, then that stream's data will be written instead of the contents of the archive entry. If a falsey value is provided, then the entry is written to disk as normal. (To exclude items from extraction, use the `filter` option described above.) - `onentry` A function that gets called with `(entry)` for each entry that passes the filter. The following options are mostly internal, but can be modified in some advanced use cases, such as re-using caches between runs. - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 16 MB. - `umask` Filter the modes of entries like `process.umask()`. - `dmode` Default mode for directories - `fmode` Default mode for files - `dirCache` A Map object of which directories exist. - `maxMetaEntrySize` The maximum size of meta entries that is supported. Defaults to 1 MB. Note that using an asynchronous stream type with the `transform` option will cause undefined behavior in sync extractions. [MiniPass](http://npm.im/minipass)-based streams are designed for this use case. ### tar.t(options, fileList, callback) [alias: tar.list] List the contents of a tarball archive. The `fileList` is an array of paths to list from the tarball. If no paths are provided, then all the entries are listed. If the archive is gzipped, then tar will detect this and unzip it. Returns an event emitter that emits `entry` events with `tar.ReadEntry` objects. However, they don't emit `'data'` or `'end'` events. (If you want to get actual readable entries, use the `tar.Parse` class instead.) The following options are supported: - `cwd` Extract files relative to the specified directory. Defaults to `process.cwd()`. [Alias: `C`] - `file` The archive file to list. If not specified, then a Writable stream is returned where the archive data should be written. [Alias: `f`] - `sync` Read the specified file synchronously. (This has no effect when a file option isn't specified, because entries are emitted as fast as they are parsed from the stream anyway.) - `strict` Treat warnings as crash-worthy errors. Default false. - `filter` A function that gets called with `(path, entry)` for each entry being listed. Return `true` to emit the entry from the archive, or `false` to skip it. - `onentry` A function that gets called with `(entry)` for each entry that passes the filter. This is important for when both `file` and `sync` are set, because it will be called synchronously. - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 16 MB. - `noResume` By default, `entry` streams are resumed immediately after the call to `onentry`. Set `noResume: true` to suppress this behavior. Note that by opting into this, the stream will never complete until the entry data is consumed. ### tar.u(options, fileList, callback) [alias: tar.update] Add files to an archive if they are newer than the entry already in the tarball archive. The `fileList` is an array of paths to add to the tarball. Adding a directory also adds its children recursively. An entry in `fileList` that starts with an `@` symbol is a tar archive whose entries will be added. To add a file that starts with `@`, prepend it with `./`. The following options are supported: - `file` Required. Write the tarball archive to the specified filename. [Alias: `f`] - `sync` Act synchronously. If this is set, then any provided file will be fully written after the call to `tar.c`. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `strict` Treat warnings as crash-worthy errors. Default false. - `cwd` The current working directory for adding entries to the archive. Defaults to `process.cwd()`. [Alias: `C`] - `prefix` A path portion to prefix onto the entries in the archive. - `gzip` Set to any truthy value to create a gzipped archive, or an object with settings for `zlib.Gzip()` [Alias: `z`] - `filter` A function that gets called with `(path, stat)` for each entry being added. Return `true` to add the entry to the archive, or `false` to omit it. - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. [Alias: `P`] - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 16 MB. - `noDirRecurse` Do not recursively archive the contents of directories. [Alias: `n`] - `follow` Set to true to pack the targets of symbolic links. Without this option, symbolic links are archived as such. [Alias: `L`, `h`] - `noPax` Suppress pax extended headers. Note that this means that long paths and linkpaths will be truncated, and large or negative numeric values may be interpreted incorrectly. - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. [Alias: `m`, `no-mtime`] - `mtime` Set to a `Date` object to force a specific `mtime` for everything added to the archive. Overridden by `noMtime`. ### tar.r(options, fileList, callback) [alias: tar.replace] Add files to an existing archive. Because later entries override earlier entries, this effectively replaces any existing entries. The `fileList` is an array of paths to add to the tarball. Adding a directory also adds its children recursively. An entry in `fileList` that starts with an `@` symbol is a tar archive whose entries will be added. To add a file that starts with `@`, prepend it with `./`. The following options are supported: - `file` Required. Write the tarball archive to the specified filename. [Alias: `f`] - `sync` Act synchronously. If this is set, then any provided file will be fully written after the call to `tar.c`. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `strict` Treat warnings as crash-worthy errors. Default false. - `cwd` The current working directory for adding entries to the archive. Defaults to `process.cwd()`. [Alias: `C`] - `prefix` A path portion to prefix onto the entries in the archive. - `gzip` Set to any truthy value to create a gzipped archive, or an object with settings for `zlib.Gzip()` [Alias: `z`] - `filter` A function that gets called with `(path, stat)` for each entry being added. Return `true` to add the entry to the archive, or `false` to omit it. - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. [Alias: `P`] - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 16 MB. - `noDirRecurse` Do not recursively archive the contents of directories. [Alias: `n`] - `follow` Set to true to pack the targets of symbolic links. Without this option, symbolic links are archived as such. [Alias: `L`, `h`] - `noPax` Suppress pax extended headers. Note that this means that long paths and linkpaths will be truncated, and large or negative numeric values may be interpreted incorrectly. - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. [Alias: `m`, `no-mtime`] - `mtime` Set to a `Date` object to force a specific `mtime` for everything added to the archive. Overridden by `noMtime`. ## Low-Level API ### class tar.Pack A readable tar stream. Has all the standard readable stream interface stuff. `'data'` and `'end'` events, `read()` method, `pause()` and `resume()`, etc. #### constructor(options) The following options are supported: - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `strict` Treat warnings as crash-worthy errors. Default false. - `cwd` The current working directory for creating the archive. Defaults to `process.cwd()`. - `prefix` A path portion to prefix onto the entries in the archive. - `gzip` Set to any truthy value to create a gzipped archive, or an object with settings for `zlib.Gzip()` - `filter` A function that gets called with `(path, stat)` for each entry being added. Return `true` to add the entry to the archive, or `false` to omit it. - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. - `linkCache` A Map object containing the device and inode value for any file whose nlink is > 1, to identify hard links. - `statCache` A Map object that caches calls `lstat`. - `readdirCache` A Map object that caches calls to `readdir`. - `jobs` A number specifying how many concurrent jobs to run. Defaults to 4. - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 16 MB. - `noDirRecurse` Do not recursively archive the contents of directories. - `follow` Set to true to pack the targets of symbolic links. Without this option, symbolic links are archived as such. - `noPax` Suppress pax extended headers. Note that this means that long paths and linkpaths will be truncated, and large or negative numeric values may be interpreted incorrectly. - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. - `mtime` Set to a `Date` object to force a specific `mtime` for everything added to the archive. Overridden by `noMtime`. #### add(path) Adds an entry to the archive. Returns the Pack stream. #### write(path) Adds an entry to the archive. Returns true if flushed. #### end() Finishes the archive. ### class tar.Pack.Sync Synchronous version of `tar.Pack`. ### class tar.Unpack A writable stream that unpacks a tar archive onto the file system. All the normal writable stream stuff is supported. `write()` and `end()` methods, `'drain'` events, etc. Note that all directories that are created will be forced to be writable, readable, and listable by their owner, to avoid cases where a directory prevents extraction of child entries by virtue of its mode. `'close'` is emitted when it's done writing stuff to the file system. Most unpack errors will cause a `warn` event to be emitted. If the `cwd` is missing, or not a directory, then an error will be emitted. #### constructor(options) - `cwd` Extract files relative to the specified directory. Defaults to `process.cwd()`. If provided, this must exist and must be a directory. - `filter` A function that gets called with `(path, entry)` for each entry being unpacked. Return `true` to unpack the entry from the archive, or `false` to skip it. - `newer` Set to true to keep the existing file on disk if it's newer than the file in the archive. - `keep` Do not overwrite existing files. In particular, if a file appears more than once in an archive, later copies will not overwrite earlier copies. - `preservePaths` Allow absolute paths, paths containing `..`, and extracting through symbolic links. By default, `/` is stripped from absolute paths, `..` paths are not extracted, and any file whose location would be modified by a symbolic link is not extracted. - `unlink` Unlink files before creating them. Without this option, tar overwrites existing files, which preserves existing hardlinks. With this option, existing hardlinks will be broken, as will any symlink that would affect the location of an extracted file. - `strip` Remove the specified number of leading path elements. Pathnames with fewer elements will be silently skipped. Note that the pathname is edited after applying the filter, but before security checks. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `umask` Filter the modes of entries like `process.umask()`. - `dmode` Default mode for directories - `fmode` Default mode for files - `dirCache` A Map object of which directories exist. - `maxMetaEntrySize` The maximum size of meta entries that is supported. Defaults to 1 MB. - `preserveOwner` If true, tar will set the `uid` and `gid` of extracted entries to the `uid` and `gid` fields in the archive. This defaults to true when run as root, and false otherwise. If false, then files and directories will be set with the owner and group of the user running the process. This is similar to `-p` in `tar(1)`, but ACLs and other system-specific data is never unpacked in this implementation, and modes are set by default already. - `win32` True if on a windows platform. Causes behavior where filenames containing `<|>?` chars are converted to windows-compatible values while being unpacked. - `uid` Set to a number to force ownership of all extracted files and folders, and all implicitly created directories, to be owned by the specified user id, regardless of the `uid` field in the archive. Cannot be used along with `preserveOwner`. Requires also setting a `gid` option. - `gid` Set to a number to force ownership of all extracted files and folders, and all implicitly created directories, to be owned by the specified group id, regardless of the `gid` field in the archive. Cannot be used along with `preserveOwner`. Requires also setting a `uid` option. - `noMtime` Set to true to omit writing `mtime` value for extracted entries. - `transform` Provide a function that takes an `entry` object, and returns a stream, or any falsey value. If a stream is provided, then that stream's data will be written instead of the contents of the archive entry. If a falsey value is provided, then the entry is written to disk as normal. (To exclude items from extraction, use the `filter` option described above.) - `strict` Treat warnings as crash-worthy errors. Default false. - `onentry` A function that gets called with `(entry)` for each entry that passes the filter. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") ### class tar.Unpack.Sync Synchronous version of `tar.Unpack`. Note that using an asynchronous stream type with the `transform` option will cause undefined behavior in sync unpack streams. [MiniPass](http://npm.im/minipass)-based streams are designed for this use case. ### class tar.Parse A writable stream that parses a tar archive stream. All the standard writable stream stuff is supported. If the archive is gzipped, then tar will detect this and unzip it. Emits `'entry'` events with `tar.ReadEntry` objects, which are themselves readable streams that you can pipe wherever. Each `entry` will not emit until the one before it is flushed through, so make sure to either consume the data (with `on('data', ...)` or `.pipe(...)`) or throw it away with `.resume()` to keep the stream flowing. #### constructor(options) Returns an event emitter that emits `entry` events with `tar.ReadEntry` objects. The following options are supported: - `strict` Treat warnings as crash-worthy errors. Default false. - `filter` A function that gets called with `(path, entry)` for each entry being listed. Return `true` to emit the entry from the archive, or `false` to skip it. - `onentry` A function that gets called with `(entry)` for each entry that passes the filter. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") #### abort(error) Stop all parsing activities. This is called when there are zlib errors. It also emits an unrecoverable warning with the error provided. ### class tar.ReadEntry extends [MiniPass](http://npm.im/minipass) A representation of an entry that is being read out of a tar archive. It has the following fields: - `extended` The extended metadata object provided to the constructor. - `globalExtended` The global extended metadata object provided to the constructor. - `remain` The number of bytes remaining to be written into the stream. - `blockRemain` The number of 512-byte blocks remaining to be written into the stream. - `ignore` Whether this entry should be ignored. - `meta` True if this represents metadata about the next entry, false if it represents a filesystem object. - All the fields from the header, extended header, and global extended header are added to the ReadEntry object. So it has `path`, `type`, `size, `mode`, and so on. #### constructor(header, extended, globalExtended) Create a new ReadEntry object with the specified header, extended header, and global extended header values. ### class tar.WriteEntry extends [MiniPass](http://npm.im/minipass) A representation of an entry that is being written from the file system into a tar archive. Emits data for the Header, and for the Pax Extended Header if one is required, as well as any body data. Creating a WriteEntry for a directory does not also create WriteEntry objects for all of the directory contents. It has the following fields: - `path` The path field that will be written to the archive. By default, this is also the path from the cwd to the file system object. - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `myuid` If supported, the uid of the user running the current process. - `myuser` The `env.USER` string if set, or `''`. Set as the entry `uname` field if the file's `uid` matches `this.myuid`. - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 1 MB. - `linkCache` A Map object containing the device and inode value for any file whose nlink is > 1, to identify hard links. - `statCache` A Map object that caches calls `lstat`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. - `cwd` The current working directory for creating the archive. Defaults to `process.cwd()`. - `absolute` The absolute path to the entry on the filesystem. By default, this is `path.resolve(this.cwd, this.path)`, but it can be overridden explicitly. - `strict` Treat warnings as crash-worthy errors. Default false. - `win32` True if on a windows platform. Causes behavior where paths replace `\` with `/` and filenames containing the windows-compatible forms of `<|>?:` characters are converted to actual `<|>?:` characters in the archive. - `noPax` Suppress pax extended headers. Note that this means that long paths and linkpaths will be truncated, and large or negative numeric values may be interpreted incorrectly. - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. #### constructor(path, options) `path` is the path of the entry as it is written in the archive. The following options are supported: - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 1 MB. - `linkCache` A Map object containing the device and inode value for any file whose nlink is > 1, to identify hard links. - `statCache` A Map object that caches calls `lstat`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. - `cwd` The current working directory for creating the archive. Defaults to `process.cwd()`. - `absolute` The absolute path to the entry on the filesystem. By default, this is `path.resolve(this.cwd, this.path)`, but it can be overridden explicitly. - `strict` Treat warnings as crash-worthy errors. Default false. - `win32` True if on a windows platform. Causes behavior where paths replace `\` with `/`. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. - `umask` Set to restrict the modes on the entries in the archive, somewhat like how umask works on file creation. Defaults to `process.umask()` on unix systems, or `0o22` on Windows. #### warn(message, data) If strict, emit an error with the provided message. Othewise, emit a `'warn'` event with the provided message and data. ### class tar.WriteEntry.Sync Synchronous version of tar.WriteEntry ### class tar.WriteEntry.Tar A version of tar.WriteEntry that gets its data from a tar.ReadEntry instead of from the filesystem. #### constructor(readEntry, options) `readEntry` is the entry being read out of another archive. The following options are supported: - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. - `strict` Treat warnings as crash-worthy errors. Default false. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. ### class tar.Header A class for reading and writing header blocks. It has the following fields: - `nullBlock` True if decoding a block which is entirely composed of `0x00` null bytes. (Useful because tar files are terminated by at least 2 null blocks.) - `cksumValid` True if the checksum in the header is valid, false otherwise. - `needPax` True if the values, as encoded, will require a Pax extended header. - `path` The path of the entry. - `mode` The 4 lowest-order octal digits of the file mode. That is, read/write/execute permissions for world, group, and owner, and the setuid, setgid, and sticky bits. - `uid` Numeric user id of the file owner - `gid` Numeric group id of the file owner - `size` Size of the file in bytes - `mtime` Modified time of the file - `cksum` The checksum of the header. This is generated by adding all the bytes of the header block, treating the checksum field itself as all ascii space characters (that is, `0x20`). - `type` The human-readable name of the type of entry this represents, or the alphanumeric key if unknown. - `typeKey` The alphanumeric key for the type of entry this header represents. - `linkpath` The target of Link and SymbolicLink entries. - `uname` Human-readable user name of the file owner - `gname` Human-readable group name of the file owner - `devmaj` The major portion of the device number. Always `0` for files, directories, and links. - `devmin` The minor portion of the device number. Always `0` for files, directories, and links. - `atime` File access time. - `ctime` File change time. #### constructor(data, [offset=0]) `data` is optional. It is either a Buffer that should be interpreted as a tar Header starting at the specified offset and continuing for 512 bytes, or a data object of keys and values to set on the header object, and eventually encode as a tar Header. #### decode(block, offset) Decode the provided buffer starting at the specified offset. Buffer length must be greater than 512 bytes. #### set(data) Set the fields in the data object. #### encode(buffer, offset) Encode the header fields into the buffer at the specified offset. Returns `this.needPax` to indicate whether a Pax Extended Header is required to properly encode the specified data. ### class tar.Pax An object representing a set of key-value pairs in an Pax extended header entry. It has the following fields. Where the same name is used, they have the same semantics as the tar.Header field of the same name. - `global` True if this represents a global extended header, or false if it is for a single entry. - `atime` - `charset` - `comment` - `ctime` - `gid` - `gname` - `linkpath` - `mtime` - `path` - `size` - `uid` - `uname` - `dev` - `ino` - `nlink` #### constructor(object, global) Set the fields set in the object. `global` is a boolean that defaults to false. #### encode() Return a Buffer containing the header and body for the Pax extended header entry, or `null` if there is nothing to encode. #### encodeBody() Return a string representing the body of the pax extended header entry. #### encodeField(fieldName) Return a string representing the key/value encoding for the specified fieldName, or `''` if the field is unset. ### tar.Pax.parse(string, extended, global) Return a new Pax object created by parsing the contents of the string provided. If the `extended` object is set, then also add the fields from that object. (This is necessary because multiple metadata entries can occur in sequence.) ### tar.types A translation table for the `type` field in tar headers. #### tar.types.name.get(code) Get the human-readable name for a given alphanumeric code. #### tar.types.code.get(name) Get the alphanumeric code for a given human-readable name. # node-hid - Access USB HID devices from Node.js # [](http://npmjs.com/package/node-hid) [](https://github.com/node-hid/node-hid/actions?query=workflow%3Amacos) [](https://github.com/node-hid/node-hid/actions?query=workflow%3Awindows) [](https://github.com/node-hid/node-hid/actions?query=workflow%3Alinux) * [node-hid - Access USB HID devices from Node.js](#node-hid---access-usb-hid-devices-from-nodejs) * [Platform Support](#platform-support) * [Supported Platforms](#supported-platforms) * [Supported Node versions](#supported-node-versions) * [Supported Electron versions](#supported-electron-versions) * [Installation](#installation) * [Installation Special Cases](#installation-special-cases) * [Examples](#examples) * [Usage](#usage) * [List all HID devices connected](#list-all-hid-devices-connected) * [Cost of HID.devices() and <code>new HID.HID()</code> for detecting device plug/unplug](#cost-of-hiddevices-and-new-hidhid-for-detecting-device-plugunplug) * [Opening a device](#opening-a-device) * [Picking a device from the device list](#picking-a-device-from-the-device-list) * [Reading from a device](#reading-from-a-device) * [Writing to a device](#writing-to-a-device) * [Complete API](#complete-api) * [devices = HID.devices()](#devices--hiddevices) * [HID.setDriverType(type)](#hidsetdrivertypetype) * [device = new HID.HID(path)](#device--new-hidhidpath) * [device = new HID.HID(vid,pid)](#device--new-hidhidvidpid) * [device.on('data', function(data) {} )](#deviceondata-functiondata--) * [device.on('error, function(error) {} )](#deviceonerror-functionerror--) * [device.write(data)](#devicewritedata) * [device.close()](#deviceclose) * [device.pause()](#devicepause) * [device.resume()](#deviceresume) * [device.read(callback)](#devicereadcallback) * [device.readSync()](#devicereadsync) * [device.readTimeout(time_out)](#devicereadtimeouttime_out) * [device.sendFeatureReport(data)](#devicesendfeaturereportdata) * [device.getFeatureReport(report_id, report_length)](#devicegetfeaturereportreport_id-report_length) * [device.setNonBlocking(no_block)](#devicesetnonblockingno_block) * [General notes:](#general-notes) * [Thread safety, Worker threads, Context-aware modules](#thread-safety-worker-threads-context-aware-modules) * [Keyboards and Mice](#keyboards-and-mice) * [Mac notes](#mac-notes) * [Windows notes](#windows-notes) * [Xbox 360 Controller on Windows 10](#xbox-360-controller-on-windows-10) * [Linux notes](#linux-notes) * [Selecting driver type](#selecting-driver-type) * [udev device permissions](#udev-device-permissions) * [Compiling from source](#compiling-from-source) * [Linux (kernel 2.6 ) : (install examples shown for Debian/Ubuntu)](#linux-kernel-26--install-examples-shown-for-debianubuntu) * [FreeBSD](#freebsd) * [Mac OS X 10.8 ](#mac-os-x-108) * [Windows 7, 8, 10](#windows-7-8-10) * [Building node-hid from source, for your projects](#building-node-hid-from-source-for-your-projects) * [Build node-hid for <code>node-hid</code> development](#build-node-hid-for-node-hid-development) * [Building node-hid for cross-compiling](#building-node-hid-for-cross-compiling) * [Electron projects using node-hid](#electron-projects-using-node-hid) * [NW.js projects using node-hid](#nwjs-projects-using-node-hid) * [Support](#support) ## Platform Support `node-hid` supports Node.js v6 and upwards. For versions before that, you will need to build from source. The platforms, architectures and node versions `node-hid` supports are the following. In general we try to provide pre-built native library binaries for the most common platforms, Node and Electron versions. We strive to make `node-hid` cross-platform so there's a good chance any combination not listed here will compile and work. ### Supported Platforms ### - Windows x86 (32-bit) (¹) - Windows x64 (64-bit) - Mac OSX 10.9+ - Linux x64 (²) - Linux x86 (¹) - Linux ARM / Raspberry Pi (¹) - Linux MIPSel (¹) - Linux PPC64 (¹) ¹ prebuilt-binaries not provided for these platforms ² prebuilt binary built on Ubuntu 18.04 x64 ### Supported Node versions ### * Node v8 to * Node v14 ### Supported Electron versions ### * Electron v3 to * Electron v11 #### Any newer version of Electron or Node MAY NOT WORK Native modules like `node-hid` require upstream dependencies to be updated to work with newer Node and Electron versions. Unless you need the features in the most recent Electron or Node, use a supported version. ## Installation For most "standard" use cases (node v4.x on mac, linux, windows on a x86 or x64 processor), `node-hid` will install like a standard npm package: ``` npm install node-hid ``` If you install globally, the test program `src/show-devices.js` is installed as `hid-showdevices`. On Linux you can use it to try the difference between `hidraw` and `libusb` driverTypes: ``` $ npm install -g node-hid $ hid-showdevices libusb $ hid-showdevices hidraw ``` ### Installation Special Cases We are using [prebuild](https://github.com/mafintosh/prebuild) to compile and post binaries of the library for most common use cases (Linux, MacOS, Windows on standard processor platforms). If a prebuild is not available, `node-hid` will work, but `npm install node-hid` will compile the binary when you install. For more details on compiler setup, see [Compling from source](#compiling-from-source) below. ## Examples In the `src/` directory, various JavaScript programs can be found that talk to specific devices in some way. Some interesting ones: - [`show-devices.js`](./src/show-devices.js) - display all HID devices in the system - [`test-ps3-rumbleled.js`](./src/test-ps3-rumbleled.js) - Read PS3 joystick and control its LED & rumblers - [`test-powermate.js`](./src/test-powermate.js) - Read Griffin PowerMate knob and change its LED - [`test-blink1.js`](./src/test-blink1.js) - Fade colors on blink(1) RGB LED - [`test-bigredbutton.js`](./src/test-bigredbutton.js) - Read Dreamcheeky Big Red Button - [`test-teensyrawhid.js`](./src/test-teensyrawhid.js) - Read/write Teensy running RawHID "Basic" Arduino sketch To try them out, run them with `node src/showdevices.js` from within the node-hid directory. ---- ## Usage ### List all HID devices connected ```js var HID = require('node-hid'); var devices = HID.devices(); ``` `devices` will contain an array of objects, one for each HID device available. Of particular interest are the `vendorId` and `productId`, as they uniquely identify a device, and the `path`, which is needed to open a particular device. Sample output: ```js HID.devices(); { vendorId: 10168, productId: 493, path: 'IOService:/AppleACPIPl...HIDDevice@14210000,0', serialNumber: '20002E8C', manufacturer: 'ThingM', product: 'blink(1) mk2', release: 2, interface: -1, usagePage: 65280, usage: 1 }, { vendorId: 1452, productId: 610, path: 'IOService:/AppleACPIPl...Keyboard@14400000,0', serialNumber: '', manufacturer: 'Apple Inc.', product: 'Apple Internal Keyboard / Trackpad', release: 549, interface: -1, usagePage: 1, usage: 6 }, <and more> ``` #### Cost of `HID.devices()` and `new HID.HID()` for detecting device plug/unplug Both `HID.devices()` and `new HID.HID()` are relatively costly, each causing a USB (and potentially Bluetooth) enumeration. This takes time and OS resources. Doing either can slow down the read/write that you do in parallel with a device, and cause other USB devices to slow down too. This is how USB works. If you are polling `HID.devices()` or doing repeated `new HID.HID(vid,pid)` to detect device plug / unplug, consider instead using [node-usb-detection](https://github.com/MadLittleMods/node-usb-detection). `node-usb-detection` uses OS-specific, non-bus enumeration ways to detect device plug / unplug. ### Opening a device Before a device can be read from or written to, it must be opened. The `path` can be determined by a prior HID.devices() call. Use either the `path` from the list returned by a prior call to `HID.devices()`: ```js var device = new HID.HID(path); ``` or open the first device matching a VID/PID pair: ```js var device = new HID.HID(vid,pid); ``` The `device` variable will contain a handle to the device. If an error occurs opening the device, an exception will be thrown. A `node-hid` device is an `EventEmitter`. While it shares some method names and usage patterns with `Readable` and `Writable` streams, it is not a stream and the semantics vary. For example, `device.write` does not take encoding or callback args and `device.pause` does not do the same thing as `readable.pause`. There is also no `pipe` method. ### Picking a device from the device list If you need to filter down the `HID.devices()` list, you can use standard Javascript array techniques: ```js var devices = HID.devices(); var deviceInfo = devices.find( function(d) { var isTeensy = d.vendorId===0x16C0 && d.productId===0x0486; return isTeensy && d.usagePage===0xFFAB && d.usage===0x200; }); if( deviceInfo ) { var device = new HID.HID( deviceInfo.path ); // ... use device } ``` ### Reading from a device To receive FEATURE reports, use `device.getFeatureReport()`. To receive INPUT reports, use `device.on("data",...)`. A `node-hid` device is an EventEmitter. Reading from a device is performed by registering a "data" event handler: ```js device.on("data", function(data) {}); ``` You can also listen for errors like this: ```js device.on("error", function(err) {}); ``` For FEATURE reports: ```js var buf = device.getFeatureReport(reportId, reportLength) ``` Notes: - Reads via `device.on("data")` are asynchronous - Reads via `device.getFeatureReport()` are synchronous - To remove an event handler, close the device with `device.close()` - When there is not yet a data handler or no data handler exists, data is not read at all -- there is no buffer. ### Writing to a device To send FEATURE reports, use `device.sendFeatureReport()`. To send OUTPUT reports, use `device.write()`. All writing is synchronous. The ReportId is the first byte of the array sent to `device.sendFeatureReport()` or `device.write()`, meaning the array should be one byte bigger than your report. If your device does NOT use numbered reports, set the first byte of the 0x00. ```js device.write([0x00, 0x01, 0x01, 0x05, 0xff, 0xff]); ``` ```js device.sendFeatureReport( [0x01, 'c', 0, 0xff,0x33,0x00, 70,0, 0] ); ``` Notes: - You must send the exact number of bytes for your chosen OUTPUT or FEATURE report. - Both `device.write()` and `device.sendFeatureReport()` return number of bytes written + 1. - For devices using Report Ids, the first byte of the array to `write()` or `sendFeatureReport()` must be the Report Id. ## Complete API ### `devices = HID.devices()` - Return array listing all connected HID devices ### `HID.setDriverType(type)` - Linux only - Sets underlying HID driver type - `type` can be `"hidraw"` or `"libusb"`, defaults to `"hidraw"` ### `device = new HID.HID(path)` - Open a HID device at the specified platform-specific path ### `device = new HID.HID(vid,pid)` - Open first HID device with specific VendorId and ProductId ### `device.on('data', function(data) {} )` - `data` - Buffer - the data read from the device ### `device.on('error, function(error) {} )` - `error` - The error Object emitted ### `device.write(data)` - `data` - the data to be synchronously written to the device, first byte is Report Id or 0x00 if not using numbered reports. - Returns number of bytes actually written ### `device.close()` - Closes the device. Subsequent reads will raise an error. ### `device.pause()` - Pauses reading and the emission of `data` events. This means the underlying device is _silenced_ until resumption -- it is not like pausing a stream, where data continues to accumulate. ### `device.resume()` - This method will cause the HID device to resume emmitting `data` events. If no listeners are registered for the `data` event, data will be lost. - When a `data` event is registered for this HID device, this method will be automatically called. ### `device.read(callback)` - Low-level function call to initiate an asynchronous read from the device. - `callback` is of the form `callback(err, data)` ### `device.readSync()` - Return an array of numbers data. If an error occurs, an exception will be thrown. ### `device.readTimeout(time_out)` - `time_out` - timeout in milliseconds - Return an array of numbers data. If an error occurs, an exception will be thrown. ### `device.sendFeatureReport(data)` - `data` - data of HID feature report, with 0th byte being report_id (`[report_id,...]`) - Returns number of bytes actually written ### `device.getFeatureReport(report_id, report_length)` - `report_id` - HID feature report id to get - `report_length` - length of report ### `device.setNonBlocking(no_block)` - `no_block` - boolean. Set to `true` to enable non-blocking reads - exactly mirrors `hid_set_nonblocking()` in [`hidapi`](https://github.com/libusb/hidapi) ----- ## General notes: ### Thread safety, Worker threads, Context-aware modules In general `node-hid` is not thread-safe because the underlying C-library it wraps (`hidapi`) is not thread-safe. However, `node-hid` is now reporting as minimally Context Aware to allow use in Electron v9+. Until `node-hid` (or `hidapi`) is rewritten to be thread-safe, please constrain all accesses to it via a single thread. ### Keyboards and Mice Most OSes will prevent USB HID keyboards or mice, or devices that appear as a keyboard to the OS. This includes many RFID scanners, barcode readers, USB HID scales, and many other devices. This is a security precaution. Otherwise, it would be trivial to build keyloggers. There are non-standard work-arounds for this, but in general you cannot use `node-hid` to access keyboard-like devices. ## Mac notes See General notes above Keyboards ## Windows notes See General notes above about Keyboards ### Xbox 360 Controller on Windows 10 For reasons similar to mice & keyboards it appears you can't access this controller on Windows 10. ## Linux notes See General notes above about Keyboards ### udev device permissions Most Linux distros use `udev` to manage access to physical devices, and USB HID devices are normally owned by the `root` user. To allow non-root access, you must create a udev rule for the device, based on the devices vendorId and productId. This rule is a text file placed in `/etc/udev/rules.d`. For an example HID device (say a blink(1) light with vendorId = 0x27b8 and productId = 0x01ed, the rules file to support both `hidraw` and `libusb` would look like: ``` SUBSYSTEM=="input", GROUP="input", MODE="0666" SUBSYSTEM=="usb", ATTRS{idVendor}=="27b8", ATTRS{idProduct}=="01ed", MODE:="666", GROUP="plugdev" KERNEL=="hidraw*", ATTRS{idVendor}=="27b8", ATTRS{idProduct}=="01ed", MODE="0666", GROUP="plugdev" ``` Note that the values for idVendor and idProduct must be in hex and lower-case. Save this file as `/etc/udev/rules.d/51-blink1.rules`, unplug the HID device, and reload the rules with: ``` sudo udevadm control --reload-rules ``` For a complete example, see the [blink1 udev rules](https://github.com/todbot/blink1/blob/master/linux/51-blink1.rules). ### Selecting driver type By default as of `node-hid@0.7.0`, the [hidraw](https://www.kernel.org/doc/Documentation/hid/hidraw.txt) driver is used to talk to HID devices. Before `node-hid@0.7.0`, the more older but less capable [libusb](http://libusb.info/) driver was used. With `hidraw` Linux apps can now see `usage` and `usagePage` attributes of devices. If you would still like to use the `libusb` driver, then you can do either: During runtime, you can use `HID.setDriverType('libusb')` immediately after require()-ing `node-hid`: ```js var HID = require('node-hid'); HID.setDriverType('libusb'); ``` If you must have the libusb version and cannot use `setDriverType()`, you can install older node-hid or build from source: ``` npm install node-hid@0.5.7 ``` or: ``` npm install node-hid --build-from-source --driver=libusb ``` ## Compiling from source To compile & develop locally or if `prebuild` cannot download a pre-built binary for you, you will need the following compiler tools and libraries: ### Linux (kernel 2.6+) : (install examples shown for Debian/Ubuntu) * Compilation tools: `apt install build-essential git` * gcc-4.8+: `apt install gcc-4.8 g++-4.8 && export CXX=g++-4.8` * libusb-1.0-0 w/headers:`apt install libusb-1.0-0 libusb-1.0-0-dev` * libudev-dev: `apt install libudev-dev` (Debian/Ubuntu) / `yum install libusbx-devel` (Fedora) ### FreeBSD * Compilation tools: `pkg install git gcc gmake libiconv node npm` ### Mac OS X 10.8+ * [Xcode](https://itunes.apple.com/us/app/xcode/id497799835?mt=12) ### Windows 7, 8, 10 * Visual C++ compiler and Python 2.7 * either: * `npm install --global windows-build-tools` * add `%USERPROFILE%\.windows-build-tools\python27` to `PATH`, like PowerShell: `$env:Path += ";$env:USERPROFILE\.windows-build-tools\python27"` * or: * [Python 2.7](https://www.python.org/downloads/windows/) * [Visual Studio Express 2013 for Desktop](https://www.visualstudio.com/downloads/download-visual-studio-vs#d-2013-express) ### Building `node-hid` from source, for your projects ``` npm install node-hid --build-from-source ``` ### Build `node-hid` for `node-hid` development * check out a copy of this repo * change into its directory * update the submodules * build the node package For example: ``` git clone https://github.com/node-hid/node-hid.git cd node-hid # must change into node-hid directory npm install -g rimraf # just so it doesn't get 'clean'ed npm run prepublishOnly # get the needed hidapi submodule npm install --build-from-source # rebuilds the module with C code npm run showdevices # list connected HID devices node ./src/show-devices.js # same as above ``` You may see some warnings from the C compiler as it compiles [hidapi](https://github.com/libusb/hidapi) (the underlying C library `node-hid` uses). This is expected. For ease of development, there are also the scripts: ``` npm run gypclean # "node-gyp clean" clean gyp build directory npm run gypconfigure # "node-gyp configure" configure makefiles npm run gypbuild # "node-gyp build" build native code ``` ### Building `node-hid` for cross-compiling When cross-compiling you need to override `node-hid`'s normal behavior of using Linux `pkg-config` to determine CLFAGS and LDFLAGS for `libusb`. To do this, you can use the `node-gyp` variable `node_hid_no_pkg_config` and then invoke a `node-hid` rebuild with either: ``` node-gyp rebuild --node_hid_no_pkg_config=1 ``` or ``` npm gyprebuild --node_hid_no_pkg_config=1 ``` ## Electron projects using `node-hid` In your electron project, add `electron-rebuild` to your `devDependencies`. Then in your package.json `scripts` add: ``` "postinstall": "electron-rebuild" ``` This will cause `npm` to rebuild `node-hid` for the version of Node that is in Electron. If you get an error similar to `The module "HID.node" was compiled against a different version of Node.js` then `electron-rebuild` hasn't been run and Electron is trying to use `node-hid` compiled for Node.js and not for Electron. If using `node-hid` with `webpack` or similar bundler, you may need to exclude `node-hid` and other libraries with native code. In webpack, you say which `externals` you have in your `webpack-config.js`: ``` externals: { "node-hid": 'commonjs node-hid' } ``` Examples of `node-hid` in Electron: * [electron-hid-test](https://github.com/todbot/electron-hid-test) - Simple example of using `node-hid`, should track latest Electron release * [electron-hid-toy](https://github.com/todbot/electron-hid-toy) - Simple example of using `node-hid`, showing packaging and signing * [Blink1Control2](https://github.com/todbot/Blink1Control2/) - a complete application, using webpack (e.g. see its [webpack-config.js](https://github.com/todbot/Blink1Control2/blob/master/webpack.config.js)) ## NW.js projects using `node-hid` Without knowing much about NW.js, a quick hacky solution that works is: ``` cd my-nwjs-app npm install node-hid --save npm install -g nw-gyp cd node_modules/node-hid nw-gyp rebuild --target=0.42.3 --arch=x64 // or whatever NW.js version you have cd ../.. nwjs . ``` ## Support Please use the [node-hid github issues page](https://github.com/node-hid/node-hid/issues) for support questions and issues. # ansi-align > align-text with ANSI support for CLIs [](https://travis-ci.org/nexdrew/ansi-align) [](https://coveralls.io/github/nexdrew/ansi-align?branch=master) [](https://github.com/conventional-changelog/standard-version) [](https://greenkeeper.io/) Easily center- or right- align a block of text, carefully ignoring ANSI escape codes. E.g. turn this: <img width="281" alt="ansi text block no alignment :(" src="https://cloud.githubusercontent.com/assets/1929625/14937509/7c3076dc-0ed7-11e6-8c16-4f6a4ccc8346.png"> Into this: <img width="278" alt="ansi text block center aligned!" src="https://cloud.githubusercontent.com/assets/1929625/14937510/7c3ca0b0-0ed7-11e6-8f0a-541ca39b6e0a.png"> ## Install ```sh npm install --save ansi-align ``` ```js var ansiAlign = require('ansi-align') ``` ## API ### `ansiAlign(text, [opts])` Align the given text per the line with the greatest [`string-width`](https://github.com/sindresorhus/string-width), returning a new string (or array). #### Arguments - `text`: required, string or array The text to align. If a string is given, it will be split using either the `opts.split` value or `'\n'` by default. If an array is given, a different array of modified strings will be returned. - `opts`: optional, object Options to change behavior, see below. #### Options - `opts.align`: string, default `'center'` The alignment mode. Use `'center'` for center-alignment, `'right'` for right-alignment, or `'left'` for left-alignment. Note that the given `text` is assumed to be left-aligned already, so specifying `align: 'left'` just returns the `text` as is (no-op). - `opts.split`: string or RegExp, default `'\n'` The separator to use when splitting the text. Only used if text is given as a string. - `opts.pad`: string, default `' '` The value used to left-pad (prepend to) lines of lesser width. Will be repeated as necessary to adjust alignment to the line with the greatest width. ### `ansiAlign.center(text)` Alias for `ansiAlign(text, { align: 'center' })`. ### `ansiAlign.right(text)` Alias for `ansiAlign(text, { align: 'right' })`. ### `ansiAlign.left(text)` Alias for `ansiAlign(text, { align: 'left' })`, which is a no-op. ## Similar Packages - [`center-align`](https://github.com/jonschlinkert/center-align): Very close to this package, except it doesn't support ANSI codes. - [`left-pad`](https://github.com/camwest/left-pad): Great for left-padding but does not support center alignment or ANSI codes. - Pretty much anything by the [chalk](https://github.com/chalk) team ## License ISC © Contributors # [nearley](http://nearley.js.org) ↗️ [](http://js.org) [](https://badge.fury.io/js/nearley) nearley is a simple, fast and powerful parsing toolkit. It consists of: 1. [A powerful, modular DSL for describing languages](https://nearley.js.org/docs/grammar) 2. [An efficient, lightweight Earley parser](https://nearley.js.org/docs/parser) 3. [Loads of tools, editor plug-ins, and other goodies!](https://nearley.js.org/docs/tooling) nearley is a **streaming** parser with support for catching **errors** gracefully and providing _all_ parsings for **ambiguous** grammars. It is compatible with a variety of **lexers** (we recommend [moo](http://github.com/tjvr/moo)). It comes with tools for creating **tests**, **railroad diagrams** and **fuzzers** from your grammars, and has support for a variety of editors and platforms. It works in both node and the browser. Unlike most other parser generators, nearley can handle *any* grammar you can define in BNF (and more!). In particular, while most existing JS parsers such as PEGjs and Jison choke on certain grammars (e.g. [left recursive ones](http://en.wikipedia.org/wiki/Left_recursion)), nearley handles them easily and efficiently by using the [Earley parsing algorithm](https://en.wikipedia.org/wiki/Earley_parser). nearley is used by a wide variety of projects: - [artificial intelligence](https://github.com/ChalmersGU-AI-course/shrdlite-course-project) and - [computational linguistics](https://wiki.eecs.yorku.ca/course_archive/2014-15/W/6339/useful_handouts) classes at universities; - [file format parsers](https://github.com/raymond-h/node-dmi); - [data-driven markup languages](https://github.com/idyll-lang/idyll-compiler); - [compilers for real-world programming languages](https://github.com/sizigi/lp5562); - and nearley itself! The nearley compiler is bootstrapped. nearley is an npm [staff pick](https://www.npmjs.com/package/npm-collection-staff-picks). ## Documentation Please visit our website https://nearley.js.org to get started! You will find a tutorial, detailed reference documents, and links to several real-world examples to get inspired. ## Contributing Please read [this document](.github/CONTRIBUTING.md) *before* working on nearley. If you are interested in contributing but unsure where to start, take a look at the issues labeled "up for grabs" on the issue tracker, or message a maintainer (@kach or @tjvr on Github). nearley is MIT licensed. A big thanks to Nathan Dinsmore for teaching me how to Earley, Aria Stewart for helping structure nearley into a mature module, and Robin Windels for bootstrapping the grammar. Additionally, Jacob Edelman wrote an experimental JavaScript parser with nearley and contributed ideas for EBNF support. Joshua T. Corbin refactored the compiler to be much, much prettier. Bojidar Marinov implemented postprocessors-in-other-languages. Shachar Itzhaky fixed a subtle bug with nullables. ## Citing nearley If you are citing nearley in academic work, please use the following BibTeX entry. ```bibtex @misc{nearley, author = "Kartik Chandra and Tim Radvan", title = "{nearley}: a parsing toolkit for {JavaScript}", year = {2014}, doi = {10.5281/zenodo.3897993}, url = {https://github.com/kach/nearley} } ``` <h1 align="center"> <img width="250" src="https://rawgit.com/lukechilds/keyv/master/media/logo.svg" alt="keyv"> <br> <br> </h1> > Simple key-value storage with support for multiple backends [](https://travis-ci.org/lukechilds/keyv) [](https://coveralls.io/github/lukechilds/keyv?branch=master) [](https://www.npmjs.com/package/keyv) [](https://www.npmjs.com/package/keyv) Keyv provides a consistent interface for key-value storage across multiple backends via storage adapters. It supports TTL based expiry, making it suitable as a cache or a persistent key-value store. ## Features There are a few existing modules similar to Keyv, however Keyv is different because it: - Isn't bloated - Has a simple Promise based API - Suitable as a TTL based cache or persistent key-value store - [Easily embeddable](#add-cache-support-to-your-module) inside another module - Works with any storage that implements the [`Map`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map) API - Handles all JSON types plus `Buffer` - Supports namespaces - Wide range of [**efficient, well tested**](#official-storage-adapters) storage adapters - Connection errors are passed through (db failures won't kill your app) - Supports the current active LTS version of Node.js or higher ## Usage Install Keyv. ``` npm install --save keyv ``` By default everything is stored in memory, you can optionally also install a storage adapter. ``` npm install --save @keyv/redis npm install --save @keyv/mongo npm install --save @keyv/sqlite npm install --save @keyv/postgres npm install --save @keyv/mysql ``` Create a new Keyv instance, passing your connection string if applicable. Keyv will automatically load the correct storage adapter. ```js const Keyv = require('keyv'); // One of the following const keyv = new Keyv(); const keyv = new Keyv('redis://user:pass@localhost:6379'); const keyv = new Keyv('mongodb://user:pass@localhost:27017/dbname'); const keyv = new Keyv('sqlite://path/to/database.sqlite'); const keyv = new Keyv('postgresql://user:pass@localhost:5432/dbname'); const keyv = new Keyv('mysql://user:pass@localhost:3306/dbname'); // Handle DB connection errors keyv.on('error', err => console.log('Connection Error', err)); await keyv.set('foo', 'expires in 1 second', 1000); // true await keyv.set('foo', 'never expires'); // true await keyv.get('foo'); // 'never expires' await keyv.delete('foo'); // true await keyv.clear(); // undefined ``` ### Namespaces You can namespace your Keyv instance to avoid key collisions and allow you to clear only a certain namespace while using the same database. ```js const users = new Keyv('redis://user:pass@localhost:6379', { namespace: 'users' }); const cache = new Keyv('redis://user:pass@localhost:6379', { namespace: 'cache' }); await users.set('foo', 'users'); // true await cache.set('foo', 'cache'); // true await users.get('foo'); // 'users' await cache.get('foo'); // 'cache' await users.clear(); // undefined await users.get('foo'); // undefined await cache.get('foo'); // 'cache' ``` ### Custom Serializers Keyv uses [`json-buffer`](https://github.com/dominictarr/json-buffer) for data serialization to ensure consistency across different backends. You can optionally provide your own serialization functions to support extra data types or to serialize to something other than JSON. ```js const keyv = new Keyv({ serialize: JSON.stringify, deserialize: JSON.parse }); ``` **Warning:** Using custom serializers means you lose any guarantee of data consistency. You should do extensive testing with your serialisation functions and chosen storage engine. ## Official Storage Adapters The official storage adapters are covered by [over 150 integration tests](https://travis-ci.org/lukechilds/keyv/jobs/260418145) to guarantee consistent behaviour. They are lightweight, efficient wrappers over the DB clients making use of indexes and native TTLs where available. Database | Adapter | Native TTL | Status ---|---|---|--- Redis | [@keyv/redis](https://github.com/lukechilds/keyv-redis) | Yes | [](https://travis-ci.org/lukechilds/keyv-redis) [](https://coveralls.io/github/lukechilds/keyv-redis?branch=master) MongoDB | [@keyv/mongo](https://github.com/lukechilds/keyv-mongo) | Yes | [](https://travis-ci.org/lukechilds/keyv-mongo) [](https://coveralls.io/github/lukechilds/keyv-mongo?branch=master) SQLite | [@keyv/sqlite](https://github.com/lukechilds/keyv-sqlite) | No | [](https://travis-ci.org/lukechilds/keyv-sqlite) [](https://coveralls.io/github/lukechilds/keyv-sqlite?branch=master) PostgreSQL | [@keyv/postgres](https://github.com/lukechilds/keyv-postgres) | No | [](https://travis-ci.org/lukechildskeyv-postgreskeyv) [](https://coveralls.io/github/lukechilds/keyv-postgres?branch=master) MySQL | [@keyv/mysql](https://github.com/lukechilds/keyv-mysql) | No | [](https://travis-ci.org/lukechilds/keyv-mysql) [](https://coveralls.io/github/lukechilds/keyv-mysql?branch=master) ## Third-party Storage Adapters You can also use third-party storage adapters or build your own. Keyv will wrap these storage adapters in TTL functionality and handle complex types internally. ```js const Keyv = require('keyv'); const myAdapter = require('./my-storage-adapter'); const keyv = new Keyv({ store: myAdapter }); ``` Any store that follows the [`Map`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map) api will work. ```js new Keyv({ store: new Map() }); ``` For example, [`quick-lru`](https://github.com/sindresorhus/quick-lru) is a completely unrelated module that implements the Map API. ```js const Keyv = require('keyv'); const QuickLRU = require('quick-lru'); const lru = new QuickLRU({ maxSize: 1000 }); const keyv = new Keyv({ store: lru }); ``` The following are third-party storage adapters compatible with Keyv: - [quick-lru](https://github.com/sindresorhus/quick-lru) - Simple "Least Recently Used" (LRU) cache - [keyv-file](https://github.com/zaaack/keyv-file) - File system storage adapter for Keyv - [keyv-dynamodb](https://www.npmjs.com/package/keyv-dynamodb) - DynamoDB storage adapter for Keyv ## Add Cache Support to your Module Keyv is designed to be easily embedded into other modules to add cache support. The recommended pattern is to expose a `cache` option in your modules options which is passed through to Keyv. Caching will work in memory by default and users have the option to also install a Keyv storage adapter and pass in a connection string, or any other storage that implements the `Map` API. You should also set a namespace for your module so you can safely call `.clear()` without clearing unrelated app data. Inside your module: ```js class AwesomeModule { constructor(opts) { this.cache = new Keyv({ uri: typeof opts.cache === 'string' && opts.cache, store: typeof opts.cache !== 'string' && opts.cache, namespace: 'awesome-module' }); } } ``` Now it can be consumed like this: ```js const AwesomeModule = require('awesome-module'); // Caches stuff in memory by default const awesomeModule = new AwesomeModule(); // After npm install --save keyv-redis const awesomeModule = new AwesomeModule({ cache: 'redis://localhost' }); // Some third-party module that implements the Map API const awesomeModule = new AwesomeModule({ cache: some3rdPartyStore }); ``` ## API ### new Keyv([uri], [options]) Returns a new Keyv instance. The Keyv instance is also an `EventEmitter` that will emit an `'error'` event if the storage adapter connection fails. ### uri Type: `String`<br> Default: `undefined` The connection string URI. Merged into the options object as options.uri. ### options Type: `Object` The options object is also passed through to the storage adapter. Check your storage adapter docs for any extra options. #### options.namespace Type: `String`<br> Default: `'keyv'` Namespace for the current instance. #### options.ttl Type: `Number`<br> Default: `undefined` Default TTL. Can be overridden by specififying a TTL on `.set()`. #### options.serialize Type: `Function`<br> Default: `JSONB.stringify` A custom serialization function. #### options.deserialize Type: `Function`<br> Default: `JSONB.parse` A custom deserialization function. #### options.store Type: `Storage adapter instance`<br> Default: `new Map()` The storage adapter instance to be used by Keyv. #### options.adapter Type: `String`<br> Default: `undefined` Specify an adapter to use. e.g `'redis'` or `'mongodb'`. ### Instance Keys must always be strings. Values can be of any type. #### .set(key, value, [ttl]) Set a value. By default keys are persistent. You can set an expiry TTL in milliseconds. Returns `true`. #### .get(key) Returns the value. #### .delete(key) Deletes an entry. Returns `true` if the key existed, `false` if not. #### .clear() Delete all entries in the current namespace. Returns `undefined`. ## License MIT © Luke Childs # axios // adapters The modules under `adapters/` are modules that handle dispatching a request and settling a returned `Promise` once a response is received. ## Example ```js var settle = require('./../core/settle'); module.exports = function myAdapter(config) { // At this point: // - config has been merged with defaults // - request transformers have already run // - request interceptors have already run // Make the request using config provided // Upon response settle the Promise return new Promise(function(resolve, reject) { var response = { data: responseData, status: request.status, statusText: request.statusText, headers: responseHeaders, config: config, request: request }; settle(resolve, reject, response); // From here: // - response transformers will run // - response interceptors will run }); } ``` # core-util-is The `util.is*` functions introduced in Node v0.12. [](https://www.npmjs.com/package/as-bignum)[](https://travis-ci.com/MaxGraey/as-bignum)[](LICENSE.md) ## WebAssembly fixed length big numbers written on [AssemblyScript](https://github.com/AssemblyScript/assemblyscript) ### Status: Work in progress Provide wide numeric types such as `u128`, `u256`, `i128`, `i256` and fixed points and also its arithmetic operations. Namespace `safe` contain equivalents with overflow/underflow traps. All kind of types pretty useful for economical and cryptographic usages and provide deterministic behavior. ### Install > yarn add as-bignum or > npm i as-bignum ### Usage via AssemblyScript ```ts import { u128 } from "as-bignum"; declare function logF64(value: f64): void; declare function logU128(hi: u64, lo: u64): void; var a = u128.One; var b = u128.from(-32); // same as u128.from<i32>(-32) var c = new u128(0x1, -0xF); var d = u128.from(0x0123456789ABCDEF); // same as u128.from<i64>(0x0123456789ABCDEF) var e = u128.from('0x0123456789ABCDEF01234567'); var f = u128.fromString('11100010101100101', 2); // same as u128.from('0b11100010101100101') var r = d / c + (b << 5) + e; logF64(r.as<f64>()); logU128(r.hi, r.lo); ``` ### Usage via JavaScript/Typescript ```ts TODO ``` ### List of types - [x] [`u128`](https://github.com/MaxGraey/as-bignum/blob/master/assembly/integer/u128.ts) unsigned type (tested) - [ ] [`u256`](https://github.com/MaxGraey/as-bignum/blob/master/assembly/integer/u256.ts) unsigned type (very basic) - [ ] `i128` signed type - [ ] `i256` signed type --- - [x] [`safe.u128`](https://github.com/MaxGraey/as-bignum/blob/master/assembly/integer/safe/u128.ts) unsigned type (tested) - [ ] `safe.u256` unsigned type - [ ] `safe.i128` signed type - [ ] `safe.i256` signed type --- - [ ] [`fp128<Q>`](https://github.com/MaxGraey/as-bignum/blob/master/assembly/fixed/fp128.ts) generic fixed point signed type٭ (very basic for now) - [ ] `fp256<Q>` generic fixed point signed type٭ --- - [ ] `safe.fp128<Q>` generic fixed point signed type٭ - [ ] `safe.fp256<Q>` generic fixed point signed type٭ ٭ _typename_ `Q` _is a type representing count of fractional bits_ Shims used when bundling asc for browser usage. # jest-mock ## API ```js import {ModuleMocker} from 'jest-mock'; ``` ### `constructor(global)` Creates a new module mocker that generates mocks as if they were created in an environment with the given global object. ### `generateFromMetadata(metadata)` Generates a mock based on the given metadata (Metadata for the mock in the schema returned by the getMetadata method of this module). Mocks treat functions specially, and all mock functions have additional members, described in the documentation for `fn` in this module. One important note: function prototypes are handled specially by this mocking framework. For functions with prototypes, when called as a constructor, the mock will install mocked function members on the instance. This allows different instances of the same constructor to have different values for its mocks member and its return values. ### `getMetadata(component)` Inspects the argument and returns its schema in the following recursive format: ``` { type: ... members: {} } ``` Where type is one of `array`, `object`, `function`, or `ref`, and members is an optional dictionary where the keys are member names and the values are metadata objects. Function prototypes are defined by defining metadata for the `member.prototype` of the function. The type of a function prototype should always be `object`. For instance, a class might be defined like this: ```js const classDef = { type: 'function', members: { staticMethod: {type: 'function'}, prototype: { type: 'object', members: { instanceMethod: {type: 'function'}, }, }, }, }; ``` Metadata may also contain references to other objects defined within the same metadata object. The metadata for the referent must be marked with `refID` key and an arbitrary value. The referrer must be marked with a `ref` key that has the same value as object with refID that it refers to. For instance, this metadata blob: ```js const refID = { type: 'object', refID: 1, members: { self: {ref: 1}, }, }; ``` defines an object with a slot named `self` that refers back to the object. ### `fn` Generates a stand-alone function with members that help drive unit tests or confirm expectations. Specifically, functions returned by this method have the following members: ##### `.mock` An object with three members, `calls`, `instances` and `invocationCallOrder`, which are all lists. The items in the `calls` list are the arguments with which the function was called. The "instances" list stores the value of 'this' for each call to the function. This is useful for retrieving instances from a constructor. The `invocationCallOrder` lists the order in which the mock was called in relation to all mock calls, starting at 1. ##### `.mockReturnValueOnce(value)` Pushes the given value onto a FIFO queue of return values for the function. ##### `.mockReturnValue(value)` Sets the default return value for the function. ##### `.mockImplementationOnce(function)` Pushes the given mock implementation onto a FIFO queue of mock implementations for the function. ##### `.mockImplementation(function)` Sets the default mock implementation for the function. ##### `.mockReturnThis()` Syntactic sugar for .mockImplementation(function() {return this;}) In case both `mockImplementationOnce()/mockImplementation()` and `mockReturnValueOnce()/mockReturnValue()` are called. The priority of which to use is based on what is the last call: - if the last call is mockReturnValueOnce() or mockReturnValue(), use the specific return value or default return value. If specific return values are used up or no default return value is set, fall back to try mockImplementation(); - if the last call is mockImplementationOnce() or mockImplementation(), run the specific implementation and return the result or run default implementation and return the result. write-file-atomic ----------------- This is an extension for node's `fs.writeFile` that makes its operation atomic and allows you set ownership (uid/gid of the file). ### var writeFileAtomic = require('write-file-atomic')<br>writeFileAtomic(filename, data, [options], [callback]) * filename **String** * data **String** | **Buffer** * options **Object** | **String** * chown **Object** default, uid & gid of existing file, if any * uid **Number** * gid **Number** * encoding **String** | **Null** default = 'utf8' * fsync **Boolean** default = true * mode **Number** default, from existing file, if any * tmpfileCreated **Function** called when the tmpfile is created * callback **Function** Atomically and asynchronously writes data to a file, replacing the file if it already exists. data can be a string or a buffer. The file is initially named `filename + "." + murmurhex(__filename, process.pid, ++invocations)`. Note that `require('worker_threads').threadId` is used in addition to `process.pid` if running inside of a worker thread. If writeFile completes successfully then, if passed the **chown** option it will change the ownership of the file. Finally it renames the file back to the filename you specified. If it encounters errors at any of these steps it will attempt to unlink the temporary file and then pass the error back to the caller. If multiple writes are concurrently issued to the same file, the write operations are put into a queue and serialized in the order they were called, using Promises. Writes to different files are still executed in parallel. If provided, the **chown** option requires both **uid** and **gid** properties or else you'll get an error. If **chown** is not specified it will default to using the owner of the previous file. To prevent chown from being ran you can also pass `false`, in which case the file will be created with the current user's credentials. If **mode** is not specified, it will default to using the permissions from an existing file, if any. Expicitly setting this to `false` remove this default, resulting in a file created with the system default permissions. If options is a String, it's assumed to be the **encoding** option. The **encoding** option is ignored if **data** is a buffer. It defaults to 'utf8'. If the **fsync** option is **false**, writeFile will skip the final fsync call. If the **tmpfileCreated** option is specified it will be called with the name of the tmpfile when created. Example: ```javascript writeFileAtomic('message.txt', 'Hello Node', {chown:{uid:100,gid:50}}, function (err) { if (err) throw err; console.log('It\'s saved!'); }); ``` This function also supports async/await: ```javascript (async () => { try { await writeFileAtomic('message.txt', 'Hello Node', {chown:{uid:100,gid:50}}); console.log('It\'s saved!'); } catch (err) { console.error(err); process.exit(1); } })(); ``` ### var writeFileAtomicSync = require('write-file-atomic').sync<br>writeFileAtomicSync(filename, data, [options]) The synchronous version of **writeFileAtomic**. ### esutils [](http://travis-ci.org/estools/esutils) esutils ([esutils](http://github.com/estools/esutils)) is utility box for ECMAScript language tools. ### API ### ast #### ast.isExpression(node) Returns true if `node` is an Expression as defined in ECMA262 edition 5.1 section [11](https://es5.github.io/#x11). #### ast.isStatement(node) Returns true if `node` is a Statement as defined in ECMA262 edition 5.1 section [12](https://es5.github.io/#x12). #### ast.isIterationStatement(node) Returns true if `node` is an IterationStatement as defined in ECMA262 edition 5.1 section [12.6](https://es5.github.io/#x12.6). #### ast.isSourceElement(node) Returns true if `node` is a SourceElement as defined in ECMA262 edition 5.1 section [14](https://es5.github.io/#x14). #### ast.trailingStatement(node) Returns `Statement?` if `node` has trailing `Statement`. ```js if (cond) consequent; ``` When taking this `IfStatement`, returns `consequent;` statement. #### ast.isProblematicIfStatement(node) Returns true if `node` is a problematic IfStatement. If `node` is a problematic `IfStatement`, `node` cannot be represented as an one on one JavaScript code. ```js { type: 'IfStatement', consequent: { type: 'WithStatement', body: { type: 'IfStatement', consequent: {type: 'EmptyStatement'} } }, alternate: {type: 'EmptyStatement'} } ``` The above node cannot be represented as a JavaScript code, since the top level `else` alternate belongs to an inner `IfStatement`. ### code #### code.isDecimalDigit(code) Return true if provided code is decimal digit. #### code.isHexDigit(code) Return true if provided code is hexadecimal digit. #### code.isOctalDigit(code) Return true if provided code is octal digit. #### code.isWhiteSpace(code) Return true if provided code is white space. White space characters are formally defined in ECMA262. #### code.isLineTerminator(code) Return true if provided code is line terminator. Line terminator characters are formally defined in ECMA262. #### code.isIdentifierStart(code) Return true if provided code can be the first character of ECMA262 Identifier. They are formally defined in ECMA262. #### code.isIdentifierPart(code) Return true if provided code can be the trailing character of ECMA262 Identifier. They are formally defined in ECMA262. ### keyword #### keyword.isKeywordES5(id, strict) Returns `true` if provided identifier string is a Keyword or Future Reserved Word in ECMA262 edition 5.1. They are formally defined in ECMA262 sections [7.6.1.1](http://es5.github.io/#x7.6.1.1) and [7.6.1.2](http://es5.github.io/#x7.6.1.2), respectively. If the `strict` flag is truthy, this function additionally checks whether `id` is a Keyword or Future Reserved Word under strict mode. #### keyword.isKeywordES6(id, strict) Returns `true` if provided identifier string is a Keyword or Future Reserved Word in ECMA262 edition 6. They are formally defined in ECMA262 sections [11.6.2.1](http://ecma-international.org/ecma-262/6.0/#sec-keywords) and [11.6.2.2](http://ecma-international.org/ecma-262/6.0/#sec-future-reserved-words), respectively. If the `strict` flag is truthy, this function additionally checks whether `id` is a Keyword or Future Reserved Word under strict mode. #### keyword.isReservedWordES5(id, strict) Returns `true` if provided identifier string is a Reserved Word in ECMA262 edition 5.1. They are formally defined in ECMA262 section [7.6.1](http://es5.github.io/#x7.6.1). If the `strict` flag is truthy, this function additionally checks whether `id` is a Reserved Word under strict mode. #### keyword.isReservedWordES6(id, strict) Returns `true` if provided identifier string is a Reserved Word in ECMA262 edition 6. They are formally defined in ECMA262 section [11.6.2](http://ecma-international.org/ecma-262/6.0/#sec-reserved-words). If the `strict` flag is truthy, this function additionally checks whether `id` is a Reserved Word under strict mode. #### keyword.isRestrictedWord(id) Returns `true` if provided identifier string is one of `eval` or `arguments`. They are restricted in strict mode code throughout ECMA262 edition 5.1 and in ECMA262 edition 6 section [12.1.1](http://ecma-international.org/ecma-262/6.0/#sec-identifiers-static-semantics-early-errors). #### keyword.isIdentifierNameES5(id) Return true if provided identifier string is an IdentifierName as specified in ECMA262 edition 5.1 section [7.6](https://es5.github.io/#x7.6). #### keyword.isIdentifierNameES6(id) Return true if provided identifier string is an IdentifierName as specified in ECMA262 edition 6 section [11.6](http://ecma-international.org/ecma-262/6.0/#sec-names-and-keywords). #### keyword.isIdentifierES5(id, strict) Return true if provided identifier string is an Identifier as specified in ECMA262 edition 5.1 section [7.6](https://es5.github.io/#x7.6). If the `strict` flag is truthy, this function additionally checks whether `id` is an Identifier under strict mode. #### keyword.isIdentifierES6(id, strict) Return true if provided identifier string is an Identifier as specified in ECMA262 edition 6 section [12.1](http://ecma-international.org/ecma-262/6.0/#sec-identifiers). If the `strict` flag is truthy, this function additionally checks whether `id` is an Identifier under strict mode. ### License Copyright (C) 2013 [Yusuke Suzuki](http://github.com/Constellation) (twitter: [@Constellation](http://twitter.com/Constellation)) and other contributors. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # buffer [![travis][travis-image]][travis-url] [![npm][npm-image]][npm-url] [![downloads][downloads-image]][downloads-url] [![javascript style guide][standard-image]][standard-url] [travis-image]: https://img.shields.io/travis/feross/buffer/master.svg [travis-url]: https://travis-ci.org/feross/buffer [npm-image]: https://img.shields.io/npm/v/buffer.svg [npm-url]: https://npmjs.org/package/buffer [downloads-image]: https://img.shields.io/npm/dm/buffer.svg [downloads-url]: https://npmjs.org/package/buffer [standard-image]: https://img.shields.io/badge/code_style-standard-brightgreen.svg [standard-url]: https://standardjs.com #### The buffer module from [node.js](https://nodejs.org/), for the browser. [![saucelabs][saucelabs-image]][saucelabs-url] [saucelabs-image]: https://saucelabs.com/browser-matrix/buffer.svg [saucelabs-url]: https://saucelabs.com/u/buffer With [browserify](http://browserify.org), simply `require('buffer')` or use the `Buffer` global and you will get this module. The goal is to provide an API that is 100% identical to [node's Buffer API](https://nodejs.org/api/buffer.html). Read the [official docs](https://nodejs.org/api/buffer.html) for the full list of properties, instance methods, and class methods that are supported. ## features - Manipulate binary data like a boss, in all browsers! - Super fast. Backed by Typed Arrays (`Uint8Array`/`ArrayBuffer`, not `Object`) - Extremely small bundle size (**6.75KB minified + gzipped**, 51.9KB with comments) - Excellent browser support (Chrome, Firefox, Edge, Safari 9+, IE 11, iOS 9+, Android, etc.) - Preserves Node API exactly, with one minor difference (see below) - Square-bracket `buf[4]` notation works! - Does not modify any browser prototypes or put anything on `window` - Comprehensive test suite (including all buffer tests from node.js core) ## install To use this module directly (without browserify), install it: ```bash npm install buffer ``` This module was previously called **native-buffer-browserify**, but please use **buffer** from now on. If you do not use a bundler, you can use the [standalone script](https://bundle.run/buffer). ## usage The module's API is identical to node's `Buffer` API. Read the [official docs](https://nodejs.org/api/buffer.html) for the full list of properties, instance methods, and class methods that are supported. As mentioned above, `require('buffer')` or use the `Buffer` global with [browserify](http://browserify.org) and this module will automatically be included in your bundle. Almost any npm module will work in the browser, even if it assumes that the node `Buffer` API will be available. To depend on this module explicitly (without browserify), require it like this: ```js var Buffer = require('buffer/').Buffer // note: the trailing slash is important! ``` To require this module explicitly, use `require('buffer/')` which tells the node.js module lookup algorithm (also used by browserify) to use the **npm module** named `buffer` instead of the **node.js core** module named `buffer`! ## how does it work? The Buffer constructor returns instances of `Uint8Array` that have their prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of `Uint8Array`, so the returned instances will have all the node `Buffer` methods and the `Uint8Array` methods. Square bracket notation works as expected -- it returns a single octet. The `Uint8Array` prototype remains unmodified. ## tracking the latest node api This module tracks the Buffer API in the latest (unstable) version of node.js. The Buffer API is considered **stable** in the [node stability index](https://nodejs.org/docs/latest/api/documentation.html#documentation_stability_index), so it is unlikely that there will ever be breaking changes. Nonetheless, when/if the Buffer API changes in node, this module's API will change accordingly. ## related packages - [`buffer-reverse`](https://www.npmjs.com/package/buffer-reverse) - Reverse a buffer - [`buffer-xor`](https://www.npmjs.com/package/buffer-xor) - Bitwise xor a buffer - [`is-buffer`](https://www.npmjs.com/package/is-buffer) - Determine if an object is a Buffer without including the whole `Buffer` package ## conversion packages ### convert typed array to buffer Use [`typedarray-to-buffer`](https://www.npmjs.com/package/typedarray-to-buffer) to convert any kind of typed array to a `Buffer`. Does not perform a copy, so it's super fast. ### convert buffer to typed array `Buffer` is a subclass of `Uint8Array` (which is a typed array). So there is no need to explicitly convert to typed array. Just use the buffer as a `Uint8Array`. ### convert blob to buffer Use [`blob-to-buffer`](https://www.npmjs.com/package/blob-to-buffer) to convert a `Blob` to a `Buffer`. ### convert buffer to blob To convert a `Buffer` to a `Blob`, use the `Blob` constructor: ```js var blob = new Blob([ buffer ]) ``` Optionally, specify a mimetype: ```js var blob = new Blob([ buffer ], { type: 'text/html' }) ``` ### convert arraybuffer to buffer To convert an `ArrayBuffer` to a `Buffer`, use the `Buffer.from` function. Does not perform a copy, so it's super fast. ```js var buffer = Buffer.from(arrayBuffer) ``` ### convert buffer to arraybuffer To convert a `Buffer` to an `ArrayBuffer`, use the `.buffer` property (which is present on all `Uint8Array` objects): ```js var arrayBuffer = buffer.buffer.slice( buffer.byteOffset, buffer.byteOffset + buffer.byteLength ) ``` Alternatively, use the [`to-arraybuffer`](https://www.npmjs.com/package/to-arraybuffer) module. ## performance See perf tests in `/perf`. `BrowserBuffer` is the browser `buffer` module (this repo). `Uint8Array` is included as a sanity check (since `BrowserBuffer` uses `Uint8Array` under the hood, `Uint8Array` will always be at least a bit faster). Finally, `NodeBuffer` is the node.js buffer module, which is included to compare against. NOTE: Performance has improved since these benchmarks were taken. PR welcome to update the README. ### Chrome 38 | Method | Operations | Accuracy | Sampled | Fastest | |:-------|:-----------|:---------|:--------|:-------:| | BrowserBuffer#bracket-notation | 11,457,464 ops/sec | ±0.86% | 66 | ✓ | | Uint8Array#bracket-notation | 10,824,332 ops/sec | ±0.74% | 65 | | | | | | | | BrowserBuffer#concat | 450,532 ops/sec | ±0.76% | 68 | | | Uint8Array#concat | 1,368,911 ops/sec | ±1.50% | 62 | ✓ | | | | | | | BrowserBuffer#copy(16000) | 903,001 ops/sec | ±0.96% | 67 | | | Uint8Array#copy(16000) | 1,422,441 ops/sec | ±1.04% | 66 | ✓ | | | | | | | BrowserBuffer#copy(16) | 11,431,358 ops/sec | ±0.46% | 69 | | | Uint8Array#copy(16) | 13,944,163 ops/sec | ±1.12% | 68 | ✓ | | | | | | | BrowserBuffer#new(16000) | 106,329 ops/sec | ±6.70% | 44 | | | Uint8Array#new(16000) | 131,001 ops/sec | ±2.85% | 31 | ✓ | | | | | | | BrowserBuffer#new(16) | 1,554,491 ops/sec | ±1.60% | 65 | | | Uint8Array#new(16) | 6,623,930 ops/sec | ±1.66% | 65 | ✓ | | | | | | | BrowserBuffer#readDoubleBE | 112,830 ops/sec | ±0.51% | 69 | ✓ | | DataView#getFloat64 | 93,500 ops/sec | ±0.57% | 68 | | | | | | | | BrowserBuffer#readFloatBE | 146,678 ops/sec | ±0.95% | 68 | ✓ | | DataView#getFloat32 | 99,311 ops/sec | ±0.41% | 67 | | | | | | | | BrowserBuffer#readUInt32LE | 843,214 ops/sec | ±0.70% | 69 | ✓ | | DataView#getUint32 | 103,024 ops/sec | ±0.64% | 67 | | | | | | | | BrowserBuffer#slice | 1,013,941 ops/sec | ±0.75% | 67 | | | Uint8Array#subarray | 1,903,928 ops/sec | ±0.53% | 67 | ✓ | | | | | | | BrowserBuffer#writeFloatBE | 61,387 ops/sec | ±0.90% | 67 | | | DataView#setFloat32 | 141,249 ops/sec | ±0.40% | 66 | ✓ | ### Firefox 33 | Method | Operations | Accuracy | Sampled | Fastest | |:-------|:-----------|:---------|:--------|:-------:| | BrowserBuffer#bracket-notation | 20,800,421 ops/sec | ±1.84% | 60 | | | Uint8Array#bracket-notation | 20,826,235 ops/sec | ±2.02% | 61 | ✓ | | | | | | | BrowserBuffer#concat | 153,076 ops/sec | ±2.32% | 61 | | | Uint8Array#concat | 1,255,674 ops/sec | ±8.65% | 52 | ✓ | | | | | | | BrowserBuffer#copy(16000) | 1,105,312 ops/sec | ±1.16% | 63 | | | Uint8Array#copy(16000) | 1,615,911 ops/sec | ±0.55% | 66 | ✓ | | | | | | | BrowserBuffer#copy(16) | 16,357,599 ops/sec | ±0.73% | 68 | | | Uint8Array#copy(16) | 31,436,281 ops/sec | ±1.05% | 68 | ✓ | | | | | | | BrowserBuffer#new(16000) | 52,995 ops/sec | ±6.01% | 35 | | | Uint8Array#new(16000) | 87,686 ops/sec | ±5.68% | 45 | ✓ | | | | | | | BrowserBuffer#new(16) | 252,031 ops/sec | ±1.61% | 66 | | | Uint8Array#new(16) | 8,477,026 ops/sec | ±0.49% | 68 | ✓ | | | | | | | BrowserBuffer#readDoubleBE | 99,871 ops/sec | ±0.41% | 69 | | | DataView#getFloat64 | 285,663 ops/sec | ±0.70% | 68 | ✓ | | | | | | | BrowserBuffer#readFloatBE | 115,540 ops/sec | ±0.42% | 69 | | | DataView#getFloat32 | 288,722 ops/sec | ±0.82% | 68 | ✓ | | | | | | | BrowserBuffer#readUInt32LE | 633,926 ops/sec | ±1.08% | 67 | ✓ | | DataView#getUint32 | 294,808 ops/sec | ±0.79% | 64 | | | | | | | | BrowserBuffer#slice | 349,425 ops/sec | ±0.46% | 69 | | | Uint8Array#subarray | 5,965,819 ops/sec | ±0.60% | 65 | ✓ | | | | | | | BrowserBuffer#writeFloatBE | 59,980 ops/sec | ±0.41% | 67 | | | DataView#setFloat32 | 317,634 ops/sec | ±0.63% | 68 | ✓ | ### Safari 8 | Method | Operations | Accuracy | Sampled | Fastest | |:-------|:-----------|:---------|:--------|:-------:| | BrowserBuffer#bracket-notation | 10,279,729 ops/sec | ±2.25% | 56 | ✓ | | Uint8Array#bracket-notation | 10,030,767 ops/sec | ±2.23% | 59 | | | | | | | | BrowserBuffer#concat | 144,138 ops/sec | ±1.38% | 65 | | | Uint8Array#concat | 4,950,764 ops/sec | ±1.70% | 63 | ✓ | | | | | | | BrowserBuffer#copy(16000) | 1,058,548 ops/sec | ±1.51% | 64 | | | Uint8Array#copy(16000) | 1,409,666 ops/sec | ±1.17% | 65 | ✓ | | | | | | | BrowserBuffer#copy(16) | 6,282,529 ops/sec | ±1.88% | 58 | | | Uint8Array#copy(16) | 11,907,128 ops/sec | ±2.87% | 58 | ✓ | | | | | | | BrowserBuffer#new(16000) | 101,663 ops/sec | ±3.89% | 57 | | | Uint8Array#new(16000) | 22,050,818 ops/sec | ±6.51% | 46 | ✓ | | | | | | | BrowserBuffer#new(16) | 176,072 ops/sec | ±2.13% | 64 | | | Uint8Array#new(16) | 24,385,731 ops/sec | ±5.01% | 51 | ✓ | | | | | | | BrowserBuffer#readDoubleBE | 41,341 ops/sec | ±1.06% | 67 | | | DataView#getFloat64 | 322,280 ops/sec | ±0.84% | 68 | ✓ | | | | | | | BrowserBuffer#readFloatBE | 46,141 ops/sec | ±1.06% | 65 | | | DataView#getFloat32 | 337,025 ops/sec | ±0.43% | 69 | ✓ | | | | | | | BrowserBuffer#readUInt32LE | 151,551 ops/sec | ±1.02% | 66 | | | DataView#getUint32 | 308,278 ops/sec | ±0.94% | 67 | ✓ | | | | | | | BrowserBuffer#slice | 197,365 ops/sec | ±0.95% | 66 | | | Uint8Array#subarray | 9,558,024 ops/sec | ±3.08% | 58 | ✓ | | | | | | | BrowserBuffer#writeFloatBE | 17,518 ops/sec | ±1.03% | 63 | | | DataView#setFloat32 | 319,751 ops/sec | ±0.48% | 68 | ✓ | ### Node 0.11.14 | Method | Operations | Accuracy | Sampled | Fastest | |:-------|:-----------|:---------|:--------|:-------:| | BrowserBuffer#bracket-notation | 10,489,828 ops/sec | ±3.25% | 90 | | | Uint8Array#bracket-notation | 10,534,884 ops/sec | ±0.81% | 92 | ✓ | | NodeBuffer#bracket-notation | 10,389,910 ops/sec | ±0.97% | 87 | | | | | | | | BrowserBuffer#concat | 487,830 ops/sec | ±2.58% | 88 | | | Uint8Array#concat | 1,814,327 ops/sec | ±1.28% | 88 | ✓ | | NodeBuffer#concat | 1,636,523 ops/sec | ±1.88% | 73 | | | | | | | | BrowserBuffer#copy(16000) | 1,073,665 ops/sec | ±0.77% | 90 | | | Uint8Array#copy(16000) | 1,348,517 ops/sec | ±0.84% | 89 | ✓ | | NodeBuffer#copy(16000) | 1,289,533 ops/sec | ±0.82% | 93 | | | | | | | | BrowserBuffer#copy(16) | 12,782,706 ops/sec | ±0.74% | 85 | | | Uint8Array#copy(16) | 14,180,427 ops/sec | ±0.93% | 92 | ✓ | | NodeBuffer#copy(16) | 11,083,134 ops/sec | ±1.06% | 89 | | | | | | | | BrowserBuffer#new(16000) | 141,678 ops/sec | ±3.30% | 67 | | | Uint8Array#new(16000) | 161,491 ops/sec | ±2.96% | 60 | | | NodeBuffer#new(16000) | 292,699 ops/sec | ±3.20% | 55 | ✓ | | | | | | | BrowserBuffer#new(16) | 1,655,466 ops/sec | ±2.41% | 82 | | | Uint8Array#new(16) | 14,399,926 ops/sec | ±0.91% | 94 | ✓ | | NodeBuffer#new(16) | 3,894,696 ops/sec | ±0.88% | 92 | | | | | | | | BrowserBuffer#readDoubleBE | 109,582 ops/sec | ±0.75% | 93 | ✓ | | DataView#getFloat64 | 91,235 ops/sec | ±0.81% | 90 | | | NodeBuffer#readDoubleBE | 88,593 ops/sec | ±0.96% | 81 | | | | | | | | BrowserBuffer#readFloatBE | 139,854 ops/sec | ±1.03% | 85 | ✓ | | DataView#getFloat32 | 98,744 ops/sec | ±0.80% | 89 | | | NodeBuffer#readFloatBE | 92,769 ops/sec | ±0.94% | 93 | | | | | | | | BrowserBuffer#readUInt32LE | 710,861 ops/sec | ±0.82% | 92 | | | DataView#getUint32 | 117,893 ops/sec | ±0.84% | 91 | | | NodeBuffer#readUInt32LE | 851,412 ops/sec | ±0.72% | 93 | ✓ | | | | | | | BrowserBuffer#slice | 1,673,877 ops/sec | ±0.73% | 94 | | | Uint8Array#subarray | 6,919,243 ops/sec | ±0.67% | 90 | ✓ | | NodeBuffer#slice | 4,617,604 ops/sec | ±0.79% | 93 | | | | | | | | BrowserBuffer#writeFloatBE | 66,011 ops/sec | ±0.75% | 93 | | | DataView#setFloat32 | 127,760 ops/sec | ±0.72% | 93 | ✓ | | NodeBuffer#writeFloatBE | 103,352 ops/sec | ±0.83% | 93 | | ### iojs 1.8.1 | Method | Operations | Accuracy | Sampled | Fastest | |:-------|:-----------|:---------|:--------|:-------:| | BrowserBuffer#bracket-notation | 10,990,488 ops/sec | ±1.11% | 91 | | | Uint8Array#bracket-notation | 11,268,757 ops/sec | ±0.65% | 97 | | | NodeBuffer#bracket-notation | 11,353,260 ops/sec | ±0.83% | 94 | ✓ | | | | | | | BrowserBuffer#concat | 378,954 ops/sec | ±0.74% | 94 | | | Uint8Array#concat | 1,358,288 ops/sec | ±0.97% | 87 | | | NodeBuffer#concat | 1,934,050 ops/sec | ±1.11% | 78 | ✓ | | | | | | | BrowserBuffer#copy(16000) | 894,538 ops/sec | ±0.56% | 84 | | | Uint8Array#copy(16000) | 1,442,656 ops/sec | ±0.71% | 96 | | | NodeBuffer#copy(16000) | 1,457,898 ops/sec | ±0.53% | 92 | ✓ | | | | | | | BrowserBuffer#copy(16) | 12,870,457 ops/sec | ±0.67% | 95 | | | Uint8Array#copy(16) | 16,643,989 ops/sec | ±0.61% | 93 | ✓ | | NodeBuffer#copy(16) | 14,885,848 ops/sec | ±0.74% | 94 | | | | | | | | BrowserBuffer#new(16000) | 109,264 ops/sec | ±4.21% | 63 | | | Uint8Array#new(16000) | 138,916 ops/sec | ±1.87% | 61 | | | NodeBuffer#new(16000) | 281,449 ops/sec | ±3.58% | 51 | ✓ | | | | | | | BrowserBuffer#new(16) | 1,362,935 ops/sec | ±0.56% | 99 | | | Uint8Array#new(16) | 6,193,090 ops/sec | ±0.64% | 95 | ✓ | | NodeBuffer#new(16) | 4,745,425 ops/sec | ±1.56% | 90 | | | | | | | | BrowserBuffer#readDoubleBE | 118,127 ops/sec | ±0.59% | 93 | ✓ | | DataView#getFloat64 | 107,332 ops/sec | ±0.65% | 91 | | | NodeBuffer#readDoubleBE | 116,274 ops/sec | ±0.94% | 95 | | | | | | | | BrowserBuffer#readFloatBE | 150,326 ops/sec | ±0.58% | 95 | ✓ | | DataView#getFloat32 | 110,541 ops/sec | ±0.57% | 98 | | | NodeBuffer#readFloatBE | 121,599 ops/sec | ±0.60% | 87 | | | | | | | | BrowserBuffer#readUInt32LE | 814,147 ops/sec | ±0.62% | 93 | | | DataView#getUint32 | 137,592 ops/sec | ±0.64% | 90 | | | NodeBuffer#readUInt32LE | 931,650 ops/sec | ±0.71% | 96 | ✓ | | | | | | | BrowserBuffer#slice | 878,590 ops/sec | ±0.68% | 93 | | | Uint8Array#subarray | 2,843,308 ops/sec | ±1.02% | 90 | | | NodeBuffer#slice | 4,998,316 ops/sec | ±0.68% | 90 | ✓ | | | | | | | BrowserBuffer#writeFloatBE | 65,927 ops/sec | ±0.74% | 93 | | | DataView#setFloat32 | 139,823 ops/sec | ±0.97% | 89 | ✓ | | NodeBuffer#writeFloatBE | 135,763 ops/sec | ±0.65% | 96 | | | | | | | ## Testing the project First, install the project: npm install Then, to run tests in Node.js, run: npm run test-node To test locally in a browser, you can run: npm run test-browser-es5-local # For ES5 browsers that don't support ES6 npm run test-browser-es6-local # For ES6 compliant browsers This will print out a URL that you can then open in a browser to run the tests, using [airtap](https://www.npmjs.com/package/airtap). To run automated browser tests using Saucelabs, ensure that your `SAUCE_USERNAME` and `SAUCE_ACCESS_KEY` environment variables are set, then run: npm test This is what's run in Travis, to check against various browsers. The list of browsers is kept in the `bin/airtap-es5.yml` and `bin/airtap-es6.yml` files. ## JavaScript Standard Style This module uses [JavaScript Standard Style](https://github.com/feross/standard). [](https://github.com/feross/standard) To test that the code conforms to the style, `npm install` and run: ./node_modules/.bin/standard ## credit This was originally forked from [buffer-browserify](https://github.com/toots/buffer-browserify). ## Security Policies and Procedures The `buffer` team and community take all security bugs in `buffer` seriously. Please see our [security policies and procedures](https://github.com/feross/security) document to learn how to report issues. ## license MIT. Copyright (C) [Feross Aboukhadijeh](http://feross.org), and other contributors. Originally forked from an MIT-licensed module by Romain Beauxis. # tr46.js > An implementation of the [Unicode TR46 specification](http://unicode.org/reports/tr46/). ## Installation [Node.js](http://nodejs.org) `>= 6` is required. To install, type this at the command line: ```shell npm install tr46 ``` ## API ### `toASCII(domainName[, options])` Converts a string of Unicode symbols to a case-folded Punycode string of ASCII symbols. Available options: * [`checkBidi`](#checkBidi) * [`checkHyphens`](#checkHyphens) * [`checkJoiners`](#checkJoiners) * [`processingOption`](#processingOption) * [`useSTD3ASCIIRules`](#useSTD3ASCIIRules) * [`verifyDNSLength`](#verifyDNSLength) ### `toUnicode(domainName[, options])` Converts a case-folded Punycode string of ASCII symbols to a string of Unicode symbols. Available options: * [`checkBidi`](#checkBidi) * [`checkHyphens`](#checkHyphens) * [`checkJoiners`](#checkJoiners) * [`useSTD3ASCIIRules`](#useSTD3ASCIIRules) ## Options ### `checkBidi` Type: `Boolean` Default value: `false` When set to `true`, any bi-directional text within the input will be checked for validation. ### `checkHyphens` Type: `Boolean` Default value: `false` When set to `true`, the positions of any hyphen characters within the input will be checked for validation. ### `checkJoiners` Type: `Boolean` Default value: `false` When set to `true`, any word joiner characters within the input will be checked for validation. ### `processingOption` Type: `String` Default value: `"nontransitional"` When set to `"transitional"`, symbols within the input will be validated according to the older IDNA2003 protocol. When set to `"nontransitional"`, the current IDNA2008 protocol will be used. ### `useSTD3ASCIIRules` Type: `Boolean` Default value: `false` When set to `true`, input will be validated according to [STD3 Rules](http://unicode.org/reports/tr46/#STD3_Rules). ### `verifyDNSLength` Type: `Boolean` Default value: `false` When set to `true`, the length of each DNS label within the input will be checked for validation. Railroad-diagram Generator ========================== This is a small js library for generating railroad diagrams (like what [JSON.org](http://json.org) uses) using SVG. Railroad diagrams are a way of visually representing a grammar in a form that is more readable than using regular expressions or BNF. I think (though I haven't given it a lot of thought yet) that if it's easy to write a context-free grammar for the language, the corresponding railroad diagram will be easy as well. There are several railroad-diagram generators out there, but none of them had the visual appeal I wanted. [Here's an example of how they look!](http://www.xanthir.com/etc/railroad-diagrams/example.html) And [here's an online generator for you to play with and get SVG code from!](http://www.xanthir.com/etc/railroad-diagrams/generator.html) The library now exists in a Python port as well! See the information further down. Details ------- To use the library, just include the js and css files, and then call the Diagram() function. Its arguments are the components of the diagram (Diagram is a special form of Sequence). An alternative to Diagram() is ComplexDiagram() which is used to describe a complex type diagram. Components are either leaves or containers. The leaves: * Terminal(text) or a bare string - represents literal text * NonTerminal(text) - represents an instruction or another production * Comment(text) - a comment * Skip() - an empty line The containers: * Sequence(children) - like simple concatenation in a regex * Choice(index, children) - like | in a regex. The index argument specifies which child is the "normal" choice and should go in the middle * Optional(child, skip) - like ? in a regex. A shorthand for `Choice(1, [Skip(), child])`. If the optional `skip` parameter has the value `"skip"`, it instead puts the Skip() in the straight-line path, for when the "normal" behavior is to omit the item. * OneOrMore(child, repeat) - like + in a regex. The 'repeat' argument is optional, and specifies something that must go between the repetitions. * ZeroOrMore(child, repeat, skip) - like * in a regex. A shorthand for `Optional(OneOrMore(child, repeat))`. The optional `skip` parameter is identical to Optional(). For convenience, each component can be called with or without `new`. If called without `new`, the container components become n-ary; that is, you can say either `new Sequence([A, B])` or just `Sequence(A,B)`. After constructing a Diagram, call `.format(...padding)` on it, specifying 0-4 padding values (just like CSS) for some additional "breathing space" around the diagram (the paddings default to 20px). The result can either be `.toString()`'d for the markup, or `.toSVG()`'d for an `<svg>` element, which can then be immediately inserted to the document. As a convenience, Diagram also has an `.addTo(element)` method, which immediately converts it to SVG and appends it to the referenced element with default paddings. `element` defaults to `document.body`. Options ------- There are a few options you can tweak, at the bottom of the file. Just tweak either until the diagram looks like what you want. You can also change the CSS file - feel free to tweak to your heart's content. Note, though, that if you change the text sizes in the CSS, you'll have to go adjust the metrics for the leaf nodes as well. * VERTICAL_SEPARATION - sets the minimum amount of vertical separation between two items. Note that the stroke width isn't counted when computing the separation; this shouldn't be relevant unless you have a very small separation or very large stroke width. * ARC_RADIUS - the radius of the arcs used in the branching containers like Choice. This has a relatively large effect on the size of non-trivial diagrams. Both tight and loose values look good, depending on what you're going for. * DIAGRAM_CLASS - the class set on the root `<svg>` element of each diagram, for use in the CSS stylesheet. * STROKE_ODD_PIXEL_LENGTH - the default stylesheet uses odd pixel lengths for 'stroke'. Due to rasterization artifacts, they look best when the item has been translated half a pixel in both directions. If you change the styling to use a stroke with even pixel lengths, you'll want to set this variable to `false`. * INTERNAL_ALIGNMENT - when some branches of a container are narrower than others, this determines how they're aligned in the extra space. Defaults to "center", but can be set to "left" or "right". Caveats ------- At this early stage, the generator is feature-complete and works as intended, but still has several TODOs: * The font-sizes are hard-coded right now, and the font handling in general is very dumb - I'm just guessing at some metrics that are probably "good enough" rather than measuring things properly. Python Port ----------- In addition to the canonical JS version, the library now exists as a Python library as well. Using it is basically identical. The config variables are globals in the file, and so may be adjusted either manually or via tweaking from inside your program. The main difference from the JS port is how you extract the string from the Diagram. You'll find a `writeSvg(writerFunc)` method on `Diagram`, which takes a callback of one argument and passes it the string form of the diagram. For example, it can be used like `Diagram(...).writeSvg(sys.stdout.write)` to write to stdout. **Note**: the callback will be called multiple times as it builds up the string, not just once with the whole thing. If you need it all at once, consider something like a `StringIO` as an easy way to collect it into a single string. License ------- This document and all associated files in the github project are licensed under [CC0](http://creativecommons.org/publicdomain/zero/1.0/) . This means you can reuse, remix, or otherwise appropriate this project for your own use **without restriction**. (The actual legal meaning can be found at the above link.) Don't ask me for permission to use any part of this project, **just use it**. I would appreciate attribution, but that is not required by the license. # line-column [](https://travis-ci.org/io-monad/line-column) [](https://coveralls.io/github/io-monad/line-column?branch=master) [](https://badge.fury.io/js/line-column) Node module to convert efficiently index to/from line-column in a string. ## Install npm install line-column ## Usage ### lineColumn(str, options = {}) Returns a `LineColumnFinder` instance for given string `str`. #### Options | Key | Description | Default | | ------- | ----------- | ------- | | `origin` | The origin value of line number and column number | `1` | ### lineColumn(str, index) This is just a shorthand for `lineColumn(str).fromIndex(index)`. ### LineColumnFinder#fromIndex(index) Find line and column from index in the string. Parameters: - `index` - `number` Index in the string. (0-origin) Returns: - `{ line: x, col: y }` Found line number and column number. - `null` if the given index is out of range. ### LineColumnFinder#toIndex(line, column) Find index from line and column in the string. Parameters: - `line` - `number` Line number in the string. - `column` - `number` Column number in the string. or - `{ line: x, col: y }` - `Object` line and column numbers in the string.<br>A key name `column` can be used instead of `col`. or - `[ line, col ]` - `Array` line and column numbers in the string. Returns: - `number` Found index in the string. - `-1` if the given line or column is out of range. ## Example ```js var lineColumn = require("line-column"); var testString = [ "ABCDEFG\n", // line:0, index:0 "HIJKLMNOPQRSTU\n", // line:1, index:8 "VWXYZ\n", // line:2, index:23 "日本語の文字\n", // line:3, index:29 "English words" // line:4, index:36 ].join(""); // length:49 lineColumn(testString).fromIndex(3) // { line: 1, col: 4 } lineColumn(testString).fromIndex(33) // { line: 4, col: 5 } lineColumn(testString).toIndex(1, 4) // 3 lineColumn(testString).toIndex(4, 5) // 33 // Shorthand of .fromIndex (compatible with find-line-column) lineColumn(testString, 33) // { line:4, col: 5 } // Object or Array is also acceptable lineColumn(testString).toIndex({ line: 4, col: 5 }) // 33 lineColumn(testString).toIndex({ line: 4, column: 5 }) // 33 lineColumn(testString).toIndex([4, 5]) // 33 // You can cache it for the same string. It is so efficient. (See benchmark) var finder = lineColumn(testString); finder.fromIndex(33) // { line: 4, column: 5 } finder.toIndex(4, 5) // 33 // For 0-origin line and column numbers var oneOrigin = lineColumn(testString, { origin: 0 }); oneOrigin.fromIndex(33) // { line: 3, column: 4 } oneOrigin.toIndex(3, 4) // 33 ``` ## Testing npm test ## Benchmark The popular package [find-line-column](https://www.npmjs.com/package/find-line-column) provides the same "index to line-column" feature. Here is some benchmarking on `line-column` vs `find-line-column`. You can run this benchmark by `npm run benchmark`. See [benchmark/](benchmark/) for the source code. ``` long text + line-column (not cached) x 72,989 ops/sec ±0.83% (89 runs sampled) long text + line-column (cached) x 13,074,242 ops/sec ±0.32% (89 runs sampled) long text + find-line-column x 33,887 ops/sec ±0.54% (84 runs sampled) short text + line-column (not cached) x 1,636,766 ops/sec ±0.77% (82 runs sampled) short text + line-column (cached) x 21,699,686 ops/sec ±1.04% (82 runs sampled) short text + find-line-column x 382,145 ops/sec ±1.04% (85 runs sampled) ``` As you might have noticed, even not cached version of `line-column` is 2x - 4x faster than `find-line-column`, and cached version of `line-column` is remarkable 50x - 380x faster. ## Contributing 1. Fork it! 2. Create your feature branch: `git checkout -b my-new-feature` 3. Commit your changes: `git commit -am 'Add some feature'` 4. Push to the branch: `git push origin my-new-feature` 5. Submit a pull request :D ## License MIT (See LICENSE) # y18n [![Build Status][travis-image]][travis-url] [![Coverage Status][coveralls-image]][coveralls-url] [![NPM version][npm-image]][npm-url] [![js-standard-style][standard-image]][standard-url] [](https://conventionalcommits.org) The bare-bones internationalization library used by yargs. Inspired by [i18n](https://www.npmjs.com/package/i18n). ## Examples _simple string translation:_ ```js var __ = require('y18n').__ console.log(__('my awesome string %s', 'foo')) ``` output: `my awesome string foo` _using tagged template literals_ ```js var __ = require('y18n').__ var str = 'foo' console.log(__`my awesome string ${str}`) ``` output: `my awesome string foo` _pluralization support:_ ```js var __n = require('y18n').__n console.log(__n('one fish %s', '%d fishes %s', 2, 'foo')) ``` output: `2 fishes foo` ## JSON Language Files The JSON language files should be stored in a `./locales` folder. File names correspond to locales, e.g., `en.json`, `pirate.json`. When strings are observed for the first time they will be added to the JSON file corresponding to the current locale. ## Methods ### require('y18n')(config) Create an instance of y18n with the config provided, options include: * `directory`: the locale directory, default `./locales`. * `updateFiles`: should newly observed strings be updated in file, default `true`. * `locale`: what locale should be used. * `fallbackToLanguage`: should fallback to a language-only file (e.g. `en.json`) be allowed if a file matching the locale does not exist (e.g. `en_US.json`), default `true`. ### y18n.\_\_(str, arg, arg, arg) Print a localized string, `%s` will be replaced with `arg`s. This function can also be used as a tag for a template literal. You can use it like this: <code>__&#96;hello ${'world'}&#96;</code>. This will be equivalent to `__('hello %s', 'world')`. ### y18n.\_\_n(singularString, pluralString, count, arg, arg, arg) Print a localized string with appropriate pluralization. If `%d` is provided in the string, the `count` will replace this placeholder. ### y18n.setLocale(str) Set the current locale being used. ### y18n.getLocale() What locale is currently being used? ### y18n.updateLocale(obj) Update the current locale with the key value pairs in `obj`. ## License ISC [travis-url]: https://travis-ci.org/yargs/y18n [travis-image]: https://img.shields.io/travis/yargs/y18n.svg [coveralls-url]: https://coveralls.io/github/yargs/y18n [coveralls-image]: https://img.shields.io/coveralls/yargs/y18n.svg [npm-url]: https://npmjs.org/package/y18n [npm-image]: https://img.shields.io/npm/v/y18n.svg [standard-image]: https://img.shields.io/badge/code%20style-standard-brightgreen.svg [standard-url]: https://github.com/feross/standard has-unicode =========== Try to guess if your terminal supports unicode ```javascript var hasUnicode = require("has-unicode") if (hasUnicode()) { // the terminal probably has unicode support } ``` ```javascript var hasUnicode = require("has-unicode").tryHarder hasUnicode(function(unicodeSupported) { if (unicodeSupported) { // the terminal probably has unicode support } }) ``` ## Detecting Unicode What we actually detect is UTF-8 support, as that's what Node itself supports. If you have a UTF-16 locale then you won't be detected as unicode capable. ### Windows Since at least Windows 7, `cmd` and `powershell` have been unicode capable, but unfortunately even then it's not guaranteed. In many localizations it still uses legacy code pages and there's no facility short of running programs or linking C++ that will let us detect this. As such, we report any Windows installation as NOT unicode capable, and recommend that you encourage your users to override this via config. ### Unix Like Operating Systems We look at the environment variables `LC_ALL`, `LC_CTYPE`, and `LANG` in that order. For `LC_ALL` and `LANG`, it looks for `.UTF-8` in the value. For `LC_CTYPE` it looks to see if the value is `UTF-8`. This is sufficient for most POSIX systems. While locale data can be put in `/etc/locale.conf` as well, AFAIK it's always copied into the environment. ### Estraverse [](http://travis-ci.org/estools/estraverse) Estraverse ([estraverse](http://github.com/estools/estraverse)) is [ECMAScript](http://www.ecma-international.org/publications/standards/Ecma-262.htm) traversal functions from [esmangle project](http://github.com/estools/esmangle). ### Documentation You can find usage docs at [wiki page](https://github.com/estools/estraverse/wiki/Usage). ### Example Usage The following code will output all variables declared at the root of a file. ```javascript estraverse.traverse(ast, { enter: function (node, parent) { if (node.type == 'FunctionExpression' || node.type == 'FunctionDeclaration') return estraverse.VisitorOption.Skip; }, leave: function (node, parent) { if (node.type == 'VariableDeclarator') console.log(node.id.name); } }); ``` We can use `this.skip`, `this.remove` and `this.break` functions instead of using Skip, Remove and Break. ```javascript estraverse.traverse(ast, { enter: function (node) { this.break(); } }); ``` And estraverse provides `estraverse.replace` function. When returning node from `enter`/`leave`, current node is replaced with it. ```javascript result = estraverse.replace(tree, { enter: function (node) { // Replace it with replaced. if (node.type === 'Literal') return replaced; } }); ``` By passing `visitor.keys` mapping, we can extend estraverse traversing functionality. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Extending the existing traversing rules. keys: { // TargetNodeName: [ 'keys', 'containing', 'the', 'other', '**node**' ] TestExpression: ['argument'] } }); ``` By passing `visitor.fallback` option, we can control the behavior when encountering unknown nodes. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Iterating the child **nodes** of unknown nodes. fallback: 'iteration' }); ``` When `visitor.fallback` is a function, we can determine which keys to visit on each node. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Skip the `argument` property of each node fallback: function(node) { return Object.keys(node).filter(function(key) { return key !== 'argument'; }); } }); ``` ### License Copyright (C) 2012-2016 [Yusuke Suzuki](http://github.com/Constellation) (twitter: [@Constellation](http://twitter.com/Constellation)) and other contributors. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. semver(1) -- The semantic versioner for npm =========================================== ## Install ```bash npm install --save semver ```` ## Usage As a node module: ```js const semver = require('semver') semver.valid('1.2.3') // '1.2.3' semver.valid('a.b.c') // null semver.clean(' =v1.2.3 ') // '1.2.3' semver.satisfies('1.2.3', '1.x || >=2.5.0 || 5.0.0 - 7.2.3') // true semver.gt('1.2.3', '9.8.7') // false semver.lt('1.2.3', '9.8.7') // true semver.minVersion('>=1.0.0') // '1.0.0' semver.valid(semver.coerce('v2')) // '2.0.0' semver.valid(semver.coerce('42.6.7.9.3-alpha')) // '42.6.7' ``` As a command-line utility: ``` $ semver -h A JavaScript implementation of the https://semver.org/ specification Copyright Isaac Z. Schlueter Usage: semver [options] <version> [<version> [...]] Prints valid versions sorted by SemVer precedence Options: -r --range <range> Print versions that match the specified range. -i --increment [<level>] Increment a version by the specified level. Level can be one of: major, minor, patch, premajor, preminor, prepatch, or prerelease. Default level is 'patch'. Only one version may be specified. --preid <identifier> Identifier to be used to prefix premajor, preminor, prepatch or prerelease version increments. -l --loose Interpret versions and ranges loosely -p --include-prerelease Always include prerelease versions in range matching -c --coerce Coerce a string into SemVer if possible (does not imply --loose) Program exits successfully if any valid version satisfies all supplied ranges, and prints all satisfying versions. If no satisfying versions are found, then exits failure. Versions are printed in ascending order, so supplying multiple versions to the utility will just sort them. ``` ## Versions A "version" is described by the `v2.0.0` specification found at <https://semver.org/>. A leading `"="` or `"v"` character is stripped off and ignored. ## Ranges A `version range` is a set of `comparators` which specify versions that satisfy the range. A `comparator` is composed of an `operator` and a `version`. The set of primitive `operators` is: * `<` Less than * `<=` Less than or equal to * `>` Greater than * `>=` Greater than or equal to * `=` Equal. If no operator is specified, then equality is assumed, so this operator is optional, but MAY be included. For example, the comparator `>=1.2.7` would match the versions `1.2.7`, `1.2.8`, `2.5.3`, and `1.3.9`, but not the versions `1.2.6` or `1.1.0`. Comparators can be joined by whitespace to form a `comparator set`, which is satisfied by the **intersection** of all of the comparators it includes. A range is composed of one or more comparator sets, joined by `||`. A version matches a range if and only if every comparator in at least one of the `||`-separated comparator sets is satisfied by the version. For example, the range `>=1.2.7 <1.3.0` would match the versions `1.2.7`, `1.2.8`, and `1.2.99`, but not the versions `1.2.6`, `1.3.0`, or `1.1.0`. The range `1.2.7 || >=1.2.9 <2.0.0` would match the versions `1.2.7`, `1.2.9`, and `1.4.6`, but not the versions `1.2.8` or `2.0.0`. ### Prerelease Tags If a version has a prerelease tag (for example, `1.2.3-alpha.3`) then it will only be allowed to satisfy comparator sets if at least one comparator with the same `[major, minor, patch]` tuple also has a prerelease tag. For example, the range `>1.2.3-alpha.3` would be allowed to match the version `1.2.3-alpha.7`, but it would *not* be satisfied by `3.4.5-alpha.9`, even though `3.4.5-alpha.9` is technically "greater than" `1.2.3-alpha.3` according to the SemVer sort rules. The version range only accepts prerelease tags on the `1.2.3` version. The version `3.4.5` *would* satisfy the range, because it does not have a prerelease flag, and `3.4.5` is greater than `1.2.3-alpha.7`. The purpose for this behavior is twofold. First, prerelease versions frequently are updated very quickly, and contain many breaking changes that are (by the author's design) not yet fit for public consumption. Therefore, by default, they are excluded from range matching semantics. Second, a user who has opted into using a prerelease version has clearly indicated the intent to use *that specific* set of alpha/beta/rc versions. By including a prerelease tag in the range, the user is indicating that they are aware of the risk. However, it is still not appropriate to assume that they have opted into taking a similar risk on the *next* set of prerelease versions. Note that this behavior can be suppressed (treating all prerelease versions as if they were normal versions, for the purpose of range matching) by setting the `includePrerelease` flag on the options object to any [functions](https://github.com/npm/node-semver#functions) that do range matching. #### Prerelease Identifiers The method `.inc` takes an additional `identifier` string argument that will append the value of the string as a prerelease identifier: ```javascript semver.inc('1.2.3', 'prerelease', 'beta') // '1.2.4-beta.0' ``` command-line example: ```bash $ semver 1.2.3 -i prerelease --preid beta 1.2.4-beta.0 ``` Which then can be used to increment further: ```bash $ semver 1.2.4-beta.0 -i prerelease 1.2.4-beta.1 ``` ### Advanced Range Syntax Advanced range syntax desugars to primitive comparators in deterministic ways. Advanced ranges may be combined in the same way as primitive comparators using white space or `||`. #### Hyphen Ranges `X.Y.Z - A.B.C` Specifies an inclusive set. * `1.2.3 - 2.3.4` := `>=1.2.3 <=2.3.4` If a partial version is provided as the first version in the inclusive range, then the missing pieces are replaced with zeroes. * `1.2 - 2.3.4` := `>=1.2.0 <=2.3.4` If a partial version is provided as the second version in the inclusive range, then all versions that start with the supplied parts of the tuple are accepted, but nothing that would be greater than the provided tuple parts. * `1.2.3 - 2.3` := `>=1.2.3 <2.4.0` * `1.2.3 - 2` := `>=1.2.3 <3.0.0` #### X-Ranges `1.2.x` `1.X` `1.2.*` `*` Any of `X`, `x`, or `*` may be used to "stand in" for one of the numeric values in the `[major, minor, patch]` tuple. * `*` := `>=0.0.0` (Any version satisfies) * `1.x` := `>=1.0.0 <2.0.0` (Matching major version) * `1.2.x` := `>=1.2.0 <1.3.0` (Matching major and minor versions) A partial version range is treated as an X-Range, so the special character is in fact optional. * `""` (empty string) := `*` := `>=0.0.0` * `1` := `1.x.x` := `>=1.0.0 <2.0.0` * `1.2` := `1.2.x` := `>=1.2.0 <1.3.0` #### Tilde Ranges `~1.2.3` `~1.2` `~1` Allows patch-level changes if a minor version is specified on the comparator. Allows minor-level changes if not. * `~1.2.3` := `>=1.2.3 <1.(2+1).0` := `>=1.2.3 <1.3.0` * `~1.2` := `>=1.2.0 <1.(2+1).0` := `>=1.2.0 <1.3.0` (Same as `1.2.x`) * `~1` := `>=1.0.0 <(1+1).0.0` := `>=1.0.0 <2.0.0` (Same as `1.x`) * `~0.2.3` := `>=0.2.3 <0.(2+1).0` := `>=0.2.3 <0.3.0` * `~0.2` := `>=0.2.0 <0.(2+1).0` := `>=0.2.0 <0.3.0` (Same as `0.2.x`) * `~0` := `>=0.0.0 <(0+1).0.0` := `>=0.0.0 <1.0.0` (Same as `0.x`) * `~1.2.3-beta.2` := `>=1.2.3-beta.2 <1.3.0` Note that prereleases in the `1.2.3` version will be allowed, if they are greater than or equal to `beta.2`. So, `1.2.3-beta.4` would be allowed, but `1.2.4-beta.2` would not, because it is a prerelease of a different `[major, minor, patch]` tuple. #### Caret Ranges `^1.2.3` `^0.2.5` `^0.0.4` Allows changes that do not modify the left-most non-zero digit in the `[major, minor, patch]` tuple. In other words, this allows patch and minor updates for versions `1.0.0` and above, patch updates for versions `0.X >=0.1.0`, and *no* updates for versions `0.0.X`. Many authors treat a `0.x` version as if the `x` were the major "breaking-change" indicator. Caret ranges are ideal when an author may make breaking changes between `0.2.4` and `0.3.0` releases, which is a common practice. However, it presumes that there will *not* be breaking changes between `0.2.4` and `0.2.5`. It allows for changes that are presumed to be additive (but non-breaking), according to commonly observed practices. * `^1.2.3` := `>=1.2.3 <2.0.0` * `^0.2.3` := `>=0.2.3 <0.3.0` * `^0.0.3` := `>=0.0.3 <0.0.4` * `^1.2.3-beta.2` := `>=1.2.3-beta.2 <2.0.0` Note that prereleases in the `1.2.3` version will be allowed, if they are greater than or equal to `beta.2`. So, `1.2.3-beta.4` would be allowed, but `1.2.4-beta.2` would not, because it is a prerelease of a different `[major, minor, patch]` tuple. * `^0.0.3-beta` := `>=0.0.3-beta <0.0.4` Note that prereleases in the `0.0.3` version *only* will be allowed, if they are greater than or equal to `beta`. So, `0.0.3-pr.2` would be allowed. When parsing caret ranges, a missing `patch` value desugars to the number `0`, but will allow flexibility within that value, even if the major and minor versions are both `0`. * `^1.2.x` := `>=1.2.0 <2.0.0` * `^0.0.x` := `>=0.0.0 <0.1.0` * `^0.0` := `>=0.0.0 <0.1.0` A missing `minor` and `patch` values will desugar to zero, but also allow flexibility within those values, even if the major version is zero. * `^1.x` := `>=1.0.0 <2.0.0` * `^0.x` := `>=0.0.0 <1.0.0` ### Range Grammar Putting all this together, here is a Backus-Naur grammar for ranges, for the benefit of parser authors: ```bnf range-set ::= range ( logical-or range ) * logical-or ::= ( ' ' ) * '||' ( ' ' ) * range ::= hyphen | simple ( ' ' simple ) * | '' hyphen ::= partial ' - ' partial simple ::= primitive | partial | tilde | caret primitive ::= ( '<' | '>' | '>=' | '<=' | '=' ) partial partial ::= xr ( '.' xr ( '.' xr qualifier ? )? )? xr ::= 'x' | 'X' | '*' | nr nr ::= '0' | ['1'-'9'] ( ['0'-'9'] ) * tilde ::= '~' partial caret ::= '^' partial qualifier ::= ( '-' pre )? ( '+' build )? pre ::= parts build ::= parts parts ::= part ( '.' part ) * part ::= nr | [-0-9A-Za-z]+ ``` ## Functions All methods and classes take a final `options` object argument. All options in this object are `false` by default. The options supported are: - `loose` Be more forgiving about not-quite-valid semver strings. (Any resulting output will always be 100% strict compliant, of course.) For backwards compatibility reasons, if the `options` argument is a boolean value instead of an object, it is interpreted to be the `loose` param. - `includePrerelease` Set to suppress the [default behavior](https://github.com/npm/node-semver#prerelease-tags) of excluding prerelease tagged versions from ranges unless they are explicitly opted into. Strict-mode Comparators and Ranges will be strict about the SemVer strings that they parse. * `valid(v)`: Return the parsed version, or null if it's not valid. * `inc(v, release)`: Return the version incremented by the release type (`major`, `premajor`, `minor`, `preminor`, `patch`, `prepatch`, or `prerelease`), or null if it's not valid * `premajor` in one call will bump the version up to the next major version and down to a prerelease of that major version. `preminor`, and `prepatch` work the same way. * If called from a non-prerelease version, the `prerelease` will work the same as `prepatch`. It increments the patch version, then makes a prerelease. If the input version is already a prerelease it simply increments it. * `prerelease(v)`: Returns an array of prerelease components, or null if none exist. Example: `prerelease('1.2.3-alpha.1') -> ['alpha', 1]` * `major(v)`: Return the major version number. * `minor(v)`: Return the minor version number. * `patch(v)`: Return the patch version number. * `intersects(r1, r2, loose)`: Return true if the two supplied ranges or comparators intersect. * `parse(v)`: Attempt to parse a string as a semantic version, returning either a `SemVer` object or `null`. ### Comparison * `gt(v1, v2)`: `v1 > v2` * `gte(v1, v2)`: `v1 >= v2` * `lt(v1, v2)`: `v1 < v2` * `lte(v1, v2)`: `v1 <= v2` * `eq(v1, v2)`: `v1 == v2` This is true if they're logically equivalent, even if they're not the exact same string. You already know how to compare strings. * `neq(v1, v2)`: `v1 != v2` The opposite of `eq`. * `cmp(v1, comparator, v2)`: Pass in a comparison string, and it'll call the corresponding function above. `"==="` and `"!=="` do simple string comparison, but are included for completeness. Throws if an invalid comparison string is provided. * `compare(v1, v2)`: Return `0` if `v1 == v2`, or `1` if `v1` is greater, or `-1` if `v2` is greater. Sorts in ascending order if passed to `Array.sort()`. * `rcompare(v1, v2)`: The reverse of compare. Sorts an array of versions in descending order when passed to `Array.sort()`. * `diff(v1, v2)`: Returns difference between two versions by the release type (`major`, `premajor`, `minor`, `preminor`, `patch`, `prepatch`, or `prerelease`), or null if the versions are the same. ### Comparators * `intersects(comparator)`: Return true if the comparators intersect ### Ranges * `validRange(range)`: Return the valid range or null if it's not valid * `satisfies(version, range)`: Return true if the version satisfies the range. * `maxSatisfying(versions, range)`: Return the highest version in the list that satisfies the range, or `null` if none of them do. * `minSatisfying(versions, range)`: Return the lowest version in the list that satisfies the range, or `null` if none of them do. * `minVersion(range)`: Return the lowest version that can possibly match the given range. * `gtr(version, range)`: Return `true` if version is greater than all the versions possible in the range. * `ltr(version, range)`: Return `true` if version is less than all the versions possible in the range. * `outside(version, range, hilo)`: Return true if the version is outside the bounds of the range in either the high or low direction. The `hilo` argument must be either the string `'>'` or `'<'`. (This is the function called by `gtr` and `ltr`.) * `intersects(range)`: Return true if any of the ranges comparators intersect Note that, since ranges may be non-contiguous, a version might not be greater than a range, less than a range, *or* satisfy a range! For example, the range `1.2 <1.2.9 || >2.0.0` would have a hole from `1.2.9` until `2.0.0`, so the version `1.2.10` would not be greater than the range (because `2.0.1` satisfies, which is higher), nor less than the range (since `1.2.8` satisfies, which is lower), and it also does not satisfy the range. If you want to know if a version satisfies or does not satisfy a range, use the `satisfies(version, range)` function. ### Coercion * `coerce(version)`: Coerces a string to semver if possible This aims to provide a very forgiving translation of a non-semver string to semver. It looks for the first digit in a string, and consumes all remaining characters which satisfy at least a partial semver (e.g., `1`, `1.2`, `1.2.3`) up to the max permitted length (256 characters). Longer versions are simply truncated (`4.6.3.9.2-alpha2` becomes `4.6.3`). All surrounding text is simply ignored (`v3.4 replaces v3.3.1` becomes `3.4.0`). Only text which lacks digits will fail coercion (`version one` is not valid). The maximum length for any semver component considered for coercion is 16 characters; longer components will be ignored (`10000000000000000.4.7.4` becomes `4.7.4`). The maximum value for any semver component is `Number.MAX_SAFE_INTEGER || (2**53 - 1)`; higher value components are invalid (`9999999999999999.4.7.4` is likely invalid). # axios // helpers The modules found in `helpers/` should be generic modules that are _not_ specific to the domain logic of axios. These modules could theoretically be published to npm on their own and consumed by other modules or apps. Some examples of generic modules are things like: - Browser polyfills - Managing cookies - Parsing HTTP headers # eslint-utils [](https://www.npmjs.com/package/eslint-utils) [](http://www.npmtrends.com/eslint-utils) [](https://github.com/mysticatea/eslint-utils/actions) [](https://codecov.io/gh/mysticatea/eslint-utils) [](https://david-dm.org/mysticatea/eslint-utils) ## 🏁 Goal This package provides utility functions and classes for make ESLint custom rules. For examples: - [getStaticValue](https://eslint-utils.mysticatea.dev/api/ast-utils.html#getstaticvalue) evaluates static value on AST. - [ReferenceTracker](https://eslint-utils.mysticatea.dev/api/scope-utils.html#referencetracker-class) checks the members of modules/globals as handling assignments and destructuring. ## 📖 Usage See [documentation](https://eslint-utils.mysticatea.dev/). ## 📰 Changelog See [releases](https://github.com/mysticatea/eslint-utils/releases). ## ❤️ Contributing Welcome contributing! Please use GitHub's Issues/PRs. ### Development Tools - `npm test` runs tests and measures coverage. - `npm run clean` removes the coverage result of `npm test` command. - `npm run coverage` shows the coverage result of the last `npm test` command. - `npm run lint` runs ESLint. - `npm run watch` runs tests on each file change. # detect-libc Node.js module to detect the C standard library (libc) implementation family and version in use on a given Linux system. Provides a value suitable for use with the `LIBC` option of [prebuild](https://www.npmjs.com/package/prebuild), [prebuild-ci](https://www.npmjs.com/package/prebuild-ci) and [prebuild-install](https://www.npmjs.com/package/prebuild-install), therefore allowing build and provision of pre-compiled binaries for musl-based Linux e.g. Alpine as well as glibc-based. Currently supports libc detection of `glibc` and `musl`. ## Install ```sh npm install detect-libc ``` ## Usage ### API ```js const { GLIBC, MUSL, family, version, isNonGlibcLinux } = require('detect-libc'); ``` * `GLIBC` is a String containing the value "glibc" for comparison with `family`. * `MUSL` is a String containing the value "musl" for comparison with `family`. * `family` is a String representing the system libc family. * `version` is a String representing the system libc version number. * `isNonGlibcLinux` is a Boolean representing whether the system is a non-glibc Linux, e.g. Alpine. ### detect-libc command line tool When run on a Linux system with a non-glibc libc, the child command will be run with the `LIBC` environment variable set to the relevant value. On all other platforms will run the child command as-is. The command line feature requires `spawnSync` provided by Node v0.12+. ```sh detect-libc child-command ``` ## Integrating with prebuild ```json "scripts": { "install": "detect-libc prebuild-install || node-gyp rebuild", "test": "mocha && detect-libc prebuild-ci" }, "dependencies": { "detect-libc": "^1.0.2", "prebuild-install": "^2.2.0" }, "devDependencies": { "prebuild": "^6.2.1", "prebuild-ci": "^2.2.3" } ``` ## Licence Copyright 2017 Lovell Fuller Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at [http://www.apache.org/licenses/LICENSE-2.0](http://www.apache.org/licenses/LICENSE-2.0.html) Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. ## Test Strategy - tests are copied from the [polyfill implementation](https://github.com/tc39/proposal-temporal/tree/main/polyfill/test) - tests should be removed if they relate to features that do not make sense for TS/AS, i.e. tests that validate the shape of an object do not make sense in a language with compile-time type checking - tests that fail because a feature has not been implemented yet should be left as failures. # json-schema-traverse Traverse JSON Schema passing each schema object to callback [](https://github.com/epoberezkin/json-schema-traverse/actions?query=workflow%3Abuild) [](https://www.npmjs.com/package/json-schema-traverse) [](https://coveralls.io/github/epoberezkin/json-schema-traverse?branch=master) ## Install ``` npm install json-schema-traverse ``` ## Usage ```javascript const traverse = require('json-schema-traverse'); const schema = { properties: { foo: {type: 'string'}, bar: {type: 'integer'} } }; traverse(schema, {cb}); // cb is called 3 times with: // 1. root schema // 2. {type: 'string'} // 3. {type: 'integer'} // Or: traverse(schema, {cb: {pre, post}}); // pre is called 3 times with: // 1. root schema // 2. {type: 'string'} // 3. {type: 'integer'} // // post is called 3 times with: // 1. {type: 'string'} // 2. {type: 'integer'} // 3. root schema ``` Callback function `cb` is called for each schema object (not including draft-06 boolean schemas), including the root schema, in pre-order traversal. Schema references ($ref) are not resolved, they are passed as is. Alternatively, you can pass a `{pre, post}` object as `cb`, and then `pre` will be called before traversing child elements, and `post` will be called after all child elements have been traversed. Callback is passed these parameters: - _schema_: the current schema object - _JSON pointer_: from the root schema to the current schema object - _root schema_: the schema passed to `traverse` object - _parent JSON pointer_: from the root schema to the parent schema object (see below) - _parent keyword_: the keyword inside which this schema appears (e.g. `properties`, `anyOf`, etc.) - _parent schema_: not necessarily parent object/array; in the example above the parent schema for `{type: 'string'}` is the root schema - _index/property_: index or property name in the array/object containing multiple schemas; in the example above for `{type: 'string'}` the property name is `'foo'` ## Traverse objects in all unknown keywords ```javascript const traverse = require('json-schema-traverse'); const schema = { mySchema: { minimum: 1, maximum: 2 } }; traverse(schema, {allKeys: true, cb}); // cb is called 2 times with: // 1. root schema // 2. mySchema ``` Without option `allKeys: true` callback will be called only with root schema. ## Enterprise support json-schema-traverse package is a part of [Tidelift enterprise subscription](https://tidelift.com/subscription/pkg/npm-json-schema-traverse?utm_source=npm-json-schema-traverse&utm_medium=referral&utm_campaign=enterprise&utm_term=repo) - it provides a centralised commercial support to open-source software users, in addition to the support provided by software maintainers. ## Security contact To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. Please do NOT report security vulnerability via GitHub issues. ## License [MIT](https://github.com/epoberezkin/json-schema-traverse/blob/master/LICENSE) # safe-buffer [![travis][travis-image]][travis-url] [![npm][npm-image]][npm-url] [![downloads][downloads-image]][downloads-url] [![javascript style guide][standard-image]][standard-url] [travis-image]: https://img.shields.io/travis/feross/safe-buffer/master.svg [travis-url]: https://travis-ci.org/feross/safe-buffer [npm-image]: https://img.shields.io/npm/v/safe-buffer.svg [npm-url]: https://npmjs.org/package/safe-buffer [downloads-image]: https://img.shields.io/npm/dm/safe-buffer.svg [downloads-url]: https://npmjs.org/package/safe-buffer [standard-image]: https://img.shields.io/badge/code_style-standard-brightgreen.svg [standard-url]: https://standardjs.com #### Safer Node.js Buffer API **Use the new Node.js Buffer APIs (`Buffer.from`, `Buffer.alloc`, `Buffer.allocUnsafe`, `Buffer.allocUnsafeSlow`) in all versions of Node.js.** **Uses the built-in implementation when available.** ## install ``` npm install safe-buffer ``` ## usage The goal of this package is to provide a safe replacement for the node.js `Buffer`. It's a drop-in replacement for `Buffer`. You can use it by adding one `require` line to the top of your node.js modules: ```js var Buffer = require('safe-buffer').Buffer // Existing buffer code will continue to work without issues: new Buffer('hey', 'utf8') new Buffer([1, 2, 3], 'utf8') new Buffer(obj) new Buffer(16) // create an uninitialized buffer (potentially unsafe) // But you can use these new explicit APIs to make clear what you want: Buffer.from('hey', 'utf8') // convert from many types to a Buffer Buffer.alloc(16) // create a zero-filled buffer (safe) Buffer.allocUnsafe(16) // create an uninitialized buffer (potentially unsafe) ``` ## api ### Class Method: Buffer.from(array) <!-- YAML added: v3.0.0 --> * `array` {Array} Allocates a new `Buffer` using an `array` of octets. ```js const buf = Buffer.from([0x62,0x75,0x66,0x66,0x65,0x72]); // creates a new Buffer containing ASCII bytes // ['b','u','f','f','e','r'] ``` A `TypeError` will be thrown if `array` is not an `Array`. ### Class Method: Buffer.from(arrayBuffer[, byteOffset[, length]]) <!-- YAML added: v5.10.0 --> * `arrayBuffer` {ArrayBuffer} The `.buffer` property of a `TypedArray` or a `new ArrayBuffer()` * `byteOffset` {Number} Default: `0` * `length` {Number} Default: `arrayBuffer.length - byteOffset` When passed a reference to the `.buffer` property of a `TypedArray` instance, the newly created `Buffer` will share the same allocated memory as the TypedArray. ```js const arr = new Uint16Array(2); arr[0] = 5000; arr[1] = 4000; const buf = Buffer.from(arr.buffer); // shares the memory with arr; console.log(buf); // Prints: <Buffer 88 13 a0 0f> // changing the TypedArray changes the Buffer also arr[1] = 6000; console.log(buf); // Prints: <Buffer 88 13 70 17> ``` The optional `byteOffset` and `length` arguments specify a memory range within the `arrayBuffer` that will be shared by the `Buffer`. ```js const ab = new ArrayBuffer(10); const buf = Buffer.from(ab, 0, 2); console.log(buf.length); // Prints: 2 ``` A `TypeError` will be thrown if `arrayBuffer` is not an `ArrayBuffer`. ### Class Method: Buffer.from(buffer) <!-- YAML added: v3.0.0 --> * `buffer` {Buffer} Copies the passed `buffer` data onto a new `Buffer` instance. ```js const buf1 = Buffer.from('buffer'); const buf2 = Buffer.from(buf1); buf1[0] = 0x61; console.log(buf1.toString()); // 'auffer' console.log(buf2.toString()); // 'buffer' (copy is not changed) ``` A `TypeError` will be thrown if `buffer` is not a `Buffer`. ### Class Method: Buffer.from(str[, encoding]) <!-- YAML added: v5.10.0 --> * `str` {String} String to encode. * `encoding` {String} Encoding to use, Default: `'utf8'` Creates a new `Buffer` containing the given JavaScript string `str`. If provided, the `encoding` parameter identifies the character encoding. If not provided, `encoding` defaults to `'utf8'`. ```js const buf1 = Buffer.from('this is a tést'); console.log(buf1.toString()); // prints: this is a tést console.log(buf1.toString('ascii')); // prints: this is a tC)st const buf2 = Buffer.from('7468697320697320612074c3a97374', 'hex'); console.log(buf2.toString()); // prints: this is a tést ``` A `TypeError` will be thrown if `str` is not a string. ### Class Method: Buffer.alloc(size[, fill[, encoding]]) <!-- YAML added: v5.10.0 --> * `size` {Number} * `fill` {Value} Default: `undefined` * `encoding` {String} Default: `utf8` Allocates a new `Buffer` of `size` bytes. If `fill` is `undefined`, the `Buffer` will be *zero-filled*. ```js const buf = Buffer.alloc(5); console.log(buf); // <Buffer 00 00 00 00 00> ``` The `size` must be less than or equal to the value of `require('buffer').kMaxLength` (on 64-bit architectures, `kMaxLength` is `(2^31)-1`). Otherwise, a [`RangeError`][] is thrown. A zero-length Buffer will be created if a `size` less than or equal to 0 is specified. If `fill` is specified, the allocated `Buffer` will be initialized by calling `buf.fill(fill)`. See [`buf.fill()`][] for more information. ```js const buf = Buffer.alloc(5, 'a'); console.log(buf); // <Buffer 61 61 61 61 61> ``` If both `fill` and `encoding` are specified, the allocated `Buffer` will be initialized by calling `buf.fill(fill, encoding)`. For example: ```js const buf = Buffer.alloc(11, 'aGVsbG8gd29ybGQ=', 'base64'); console.log(buf); // <Buffer 68 65 6c 6c 6f 20 77 6f 72 6c 64> ``` Calling `Buffer.alloc(size)` can be significantly slower than the alternative `Buffer.allocUnsafe(size)` but ensures that the newly created `Buffer` instance contents will *never contain sensitive data*. A `TypeError` will be thrown if `size` is not a number. ### Class Method: Buffer.allocUnsafe(size) <!-- YAML added: v5.10.0 --> * `size` {Number} Allocates a new *non-zero-filled* `Buffer` of `size` bytes. The `size` must be less than or equal to the value of `require('buffer').kMaxLength` (on 64-bit architectures, `kMaxLength` is `(2^31)-1`). Otherwise, a [`RangeError`][] is thrown. A zero-length Buffer will be created if a `size` less than or equal to 0 is specified. The underlying memory for `Buffer` instances created in this way is *not initialized*. The contents of the newly created `Buffer` are unknown and *may contain sensitive data*. Use [`buf.fill(0)`][] to initialize such `Buffer` instances to zeroes. ```js const buf = Buffer.allocUnsafe(5); console.log(buf); // <Buffer 78 e0 82 02 01> // (octets will be different, every time) buf.fill(0); console.log(buf); // <Buffer 00 00 00 00 00> ``` A `TypeError` will be thrown if `size` is not a number. Note that the `Buffer` module pre-allocates an internal `Buffer` instance of size `Buffer.poolSize` that is used as a pool for the fast allocation of new `Buffer` instances created using `Buffer.allocUnsafe(size)` (and the deprecated `new Buffer(size)` constructor) only when `size` is less than or equal to `Buffer.poolSize >> 1` (floor of `Buffer.poolSize` divided by two). The default value of `Buffer.poolSize` is `8192` but can be modified. Use of this pre-allocated internal memory pool is a key difference between calling `Buffer.alloc(size, fill)` vs. `Buffer.allocUnsafe(size).fill(fill)`. Specifically, `Buffer.alloc(size, fill)` will *never* use the internal Buffer pool, while `Buffer.allocUnsafe(size).fill(fill)` *will* use the internal Buffer pool if `size` is less than or equal to half `Buffer.poolSize`. The difference is subtle but can be important when an application requires the additional performance that `Buffer.allocUnsafe(size)` provides. ### Class Method: Buffer.allocUnsafeSlow(size) <!-- YAML added: v5.10.0 --> * `size` {Number} Allocates a new *non-zero-filled* and non-pooled `Buffer` of `size` bytes. The `size` must be less than or equal to the value of `require('buffer').kMaxLength` (on 64-bit architectures, `kMaxLength` is `(2^31)-1`). Otherwise, a [`RangeError`][] is thrown. A zero-length Buffer will be created if a `size` less than or equal to 0 is specified. The underlying memory for `Buffer` instances created in this way is *not initialized*. The contents of the newly created `Buffer` are unknown and *may contain sensitive data*. Use [`buf.fill(0)`][] to initialize such `Buffer` instances to zeroes. When using `Buffer.allocUnsafe()` to allocate new `Buffer` instances, allocations under 4KB are, by default, sliced from a single pre-allocated `Buffer`. This allows applications to avoid the garbage collection overhead of creating many individually allocated Buffers. This approach improves both performance and memory usage by eliminating the need to track and cleanup as many `Persistent` objects. However, in the case where a developer may need to retain a small chunk of memory from a pool for an indeterminate amount of time, it may be appropriate to create an un-pooled Buffer instance using `Buffer.allocUnsafeSlow()` then copy out the relevant bits. ```js // need to keep around a few small chunks of memory const store = []; socket.on('readable', () => { const data = socket.read(); // allocate for retained data const sb = Buffer.allocUnsafeSlow(10); // copy the data into the new allocation data.copy(sb, 0, 0, 10); store.push(sb); }); ``` Use of `Buffer.allocUnsafeSlow()` should be used only as a last resort *after* a developer has observed undue memory retention in their applications. A `TypeError` will be thrown if `size` is not a number. ### All the Rest The rest of the `Buffer` API is exactly the same as in node.js. [See the docs](https://nodejs.org/api/buffer.html). ## Related links - [Node.js issue: Buffer(number) is unsafe](https://github.com/nodejs/node/issues/4660) - [Node.js Enhancement Proposal: Buffer.from/Buffer.alloc/Buffer.zalloc/Buffer() soft-deprecate](https://github.com/nodejs/node-eps/pull/4) ## Why is `Buffer` unsafe? Today, the node.js `Buffer` constructor is overloaded to handle many different argument types like `String`, `Array`, `Object`, `TypedArrayView` (`Uint8Array`, etc.), `ArrayBuffer`, and also `Number`. The API is optimized for convenience: you can throw any type at it, and it will try to do what you want. Because the Buffer constructor is so powerful, you often see code like this: ```js // Convert UTF-8 strings to hex function toHex (str) { return new Buffer(str).toString('hex') } ``` ***But what happens if `toHex` is called with a `Number` argument?*** ### Remote Memory Disclosure If an attacker can make your program call the `Buffer` constructor with a `Number` argument, then they can make it allocate uninitialized memory from the node.js process. This could potentially disclose TLS private keys, user data, or database passwords. When the `Buffer` constructor is passed a `Number` argument, it returns an **UNINITIALIZED** block of memory of the specified `size`. When you create a `Buffer` like this, you **MUST** overwrite the contents before returning it to the user. From the [node.js docs](https://nodejs.org/api/buffer.html#buffer_new_buffer_size): > `new Buffer(size)` > > - `size` Number > > The underlying memory for `Buffer` instances created in this way is not initialized. > **The contents of a newly created `Buffer` are unknown and could contain sensitive > data.** Use `buf.fill(0)` to initialize a Buffer to zeroes. (Emphasis our own.) Whenever the programmer intended to create an uninitialized `Buffer` you often see code like this: ```js var buf = new Buffer(16) // Immediately overwrite the uninitialized buffer with data from another buffer for (var i = 0; i < buf.length; i++) { buf[i] = otherBuf[i] } ``` ### Would this ever be a problem in real code? Yes. It's surprisingly common to forget to check the type of your variables in a dynamically-typed language like JavaScript. Usually the consequences of assuming the wrong type is that your program crashes with an uncaught exception. But the failure mode for forgetting to check the type of arguments to the `Buffer` constructor is more catastrophic. Here's an example of a vulnerable service that takes a JSON payload and converts it to hex: ```js // Take a JSON payload {str: "some string"} and convert it to hex var server = http.createServer(function (req, res) { var data = '' req.setEncoding('utf8') req.on('data', function (chunk) { data += chunk }) req.on('end', function () { var body = JSON.parse(data) res.end(new Buffer(body.str).toString('hex')) }) }) server.listen(8080) ``` In this example, an http client just has to send: ```json { "str": 1000 } ``` and it will get back 1,000 bytes of uninitialized memory from the server. This is a very serious bug. It's similar in severity to the [the Heartbleed bug](http://heartbleed.com/) that allowed disclosure of OpenSSL process memory by remote attackers. ### Which real-world packages were vulnerable? #### [`bittorrent-dht`](https://www.npmjs.com/package/bittorrent-dht) [Mathias Buus](https://github.com/mafintosh) and I ([Feross Aboukhadijeh](http://feross.org/)) found this issue in one of our own packages, [`bittorrent-dht`](https://www.npmjs.com/package/bittorrent-dht). The bug would allow anyone on the internet to send a series of messages to a user of `bittorrent-dht` and get them to reveal 20 bytes at a time of uninitialized memory from the node.js process. Here's [the commit](https://github.com/feross/bittorrent-dht/commit/6c7da04025d5633699800a99ec3fbadf70ad35b8) that fixed it. We released a new fixed version, created a [Node Security Project disclosure](https://nodesecurity.io/advisories/68), and deprecated all vulnerable versions on npm so users will get a warning to upgrade to a newer version. #### [`ws`](https://www.npmjs.com/package/ws) That got us wondering if there were other vulnerable packages. Sure enough, within a short period of time, we found the same issue in [`ws`](https://www.npmjs.com/package/ws), the most popular WebSocket implementation in node.js. If certain APIs were called with `Number` parameters instead of `String` or `Buffer` as expected, then uninitialized server memory would be disclosed to the remote peer. These were the vulnerable methods: ```js socket.send(number) socket.ping(number) socket.pong(number) ``` Here's a vulnerable socket server with some echo functionality: ```js server.on('connection', function (socket) { socket.on('message', function (message) { message = JSON.parse(message) if (message.type === 'echo') { socket.send(message.data) // send back the user's message } }) }) ``` `socket.send(number)` called on the server, will disclose server memory. Here's [the release](https://github.com/websockets/ws/releases/tag/1.0.1) where the issue was fixed, with a more detailed explanation. Props to [Arnout Kazemier](https://github.com/3rd-Eden) for the quick fix. Here's the [Node Security Project disclosure](https://nodesecurity.io/advisories/67). ### What's the solution? It's important that node.js offers a fast way to get memory otherwise performance-critical applications would needlessly get a lot slower. But we need a better way to *signal our intent* as programmers. **When we want uninitialized memory, we should request it explicitly.** Sensitive functionality should not be packed into a developer-friendly API that loosely accepts many different types. This type of API encourages the lazy practice of passing variables in without checking the type very carefully. #### A new API: `Buffer.allocUnsafe(number)` The functionality of creating buffers with uninitialized memory should be part of another API. We propose `Buffer.allocUnsafe(number)`. This way, it's not part of an API that frequently gets user input of all sorts of different types passed into it. ```js var buf = Buffer.allocUnsafe(16) // careful, uninitialized memory! // Immediately overwrite the uninitialized buffer with data from another buffer for (var i = 0; i < buf.length; i++) { buf[i] = otherBuf[i] } ``` ### How do we fix node.js core? We sent [a PR to node.js core](https://github.com/nodejs/node/pull/4514) (merged as `semver-major`) which defends against one case: ```js var str = 16 new Buffer(str, 'utf8') ``` In this situation, it's implied that the programmer intended the first argument to be a string, since they passed an encoding as a second argument. Today, node.js will allocate uninitialized memory in the case of `new Buffer(number, encoding)`, which is probably not what the programmer intended. But this is only a partial solution, since if the programmer does `new Buffer(variable)` (without an `encoding` parameter) there's no way to know what they intended. If `variable` is sometimes a number, then uninitialized memory will sometimes be returned. ### What's the real long-term fix? We could deprecate and remove `new Buffer(number)` and use `Buffer.allocUnsafe(number)` when we need uninitialized memory. But that would break 1000s of packages. ~~We believe the best solution is to:~~ ~~1. Change `new Buffer(number)` to return safe, zeroed-out memory~~ ~~2. Create a new API for creating uninitialized Buffers. We propose: `Buffer.allocUnsafe(number)`~~ #### Update We now support adding three new APIs: - `Buffer.from(value)` - convert from any type to a buffer - `Buffer.alloc(size)` - create a zero-filled buffer - `Buffer.allocUnsafe(size)` - create an uninitialized buffer with given size This solves the core problem that affected `ws` and `bittorrent-dht` which is `Buffer(variable)` getting tricked into taking a number argument. This way, existing code continues working and the impact on the npm ecosystem will be minimal. Over time, npm maintainers can migrate performance-critical code to use `Buffer.allocUnsafe(number)` instead of `new Buffer(number)`. ### Conclusion We think there's a serious design issue with the `Buffer` API as it exists today. It promotes insecure software by putting high-risk functionality into a convenient API with friendly "developer ergonomics". This wasn't merely a theoretical exercise because we found the issue in some of the most popular npm packages. Fortunately, there's an easy fix that can be applied today. Use `safe-buffer` in place of `buffer`. ```js var Buffer = require('safe-buffer').Buffer ``` Eventually, we hope that node.js core can switch to this new, safer behavior. We believe the impact on the ecosystem would be minimal since it's not a breaking change. Well-maintained, popular packages would be updated to use `Buffer.alloc` quickly, while older, insecure packages would magically become safe from this attack vector. ## links - [Node.js PR: buffer: throw if both length and enc are passed](https://github.com/nodejs/node/pull/4514) - [Node Security Project disclosure for `ws`](https://nodesecurity.io/advisories/67) - [Node Security Project disclosure for`bittorrent-dht`](https://nodesecurity.io/advisories/68) ## credit The original issues in `bittorrent-dht` ([disclosure](https://nodesecurity.io/advisories/68)) and `ws` ([disclosure](https://nodesecurity.io/advisories/67)) were discovered by [Mathias Buus](https://github.com/mafintosh) and [Feross Aboukhadijeh](http://feross.org/). Thanks to [Adam Baldwin](https://github.com/evilpacket) for helping disclose these issues and for his work running the [Node Security Project](https://nodesecurity.io/). Thanks to [John Hiesey](https://github.com/jhiesey) for proofreading this README and auditing the code. ## license MIT. Copyright (C) [Feross Aboukhadijeh](http://feross.org) # is-yarn-global [](https://travis-ci.org/LitoMore/is-yarn-global) [](https://www.npmjs.com/package/is-yarn-global) [](https://github.com/LitoMore/is-yarn-global/blob/master/LICENSE) [](https://github.com/sindresorhus/xo) Check if installed by yarn globally without any `fs` calls ## Install ```bash $ npm install is-yarn-global ``` ## Usage Just require it in your package. ```javascript const isYarnGlobal = require('is-yarn-global'); console.log(isYarnGlobal()); ``` ## License MIT © [LitoMore](https://github.com/LitoMore) semver(1) -- The semantic versioner for npm =========================================== ## Install ```bash npm install semver ```` ## Usage As a node module: ```js const semver = require('semver') semver.valid('1.2.3') // '1.2.3' semver.valid('a.b.c') // null semver.clean(' =v1.2.3 ') // '1.2.3' semver.satisfies('1.2.3', '1.x || >=2.5.0 || 5.0.0 - 7.2.3') // true semver.gt('1.2.3', '9.8.7') // false semver.lt('1.2.3', '9.8.7') // true semver.minVersion('>=1.0.0') // '1.0.0' semver.valid(semver.coerce('v2')) // '2.0.0' semver.valid(semver.coerce('42.6.7.9.3-alpha')) // '42.6.7' ``` As a command-line utility: ``` $ semver -h A JavaScript implementation of the https://semver.org/ specification Copyright Isaac Z. Schlueter Usage: semver [options] <version> [<version> [...]] Prints valid versions sorted by SemVer precedence Options: -r --range <range> Print versions that match the specified range. -i --increment [<level>] Increment a version by the specified level. Level can be one of: major, minor, patch, premajor, preminor, prepatch, or prerelease. Default level is 'patch'. Only one version may be specified. --preid <identifier> Identifier to be used to prefix premajor, preminor, prepatch or prerelease version increments. -l --loose Interpret versions and ranges loosely -p --include-prerelease Always include prerelease versions in range matching -c --coerce Coerce a string into SemVer if possible (does not imply --loose) --rtl Coerce version strings right to left --ltr Coerce version strings left to right (default) Program exits successfully if any valid version satisfies all supplied ranges, and prints all satisfying versions. If no satisfying versions are found, then exits failure. Versions are printed in ascending order, so supplying multiple versions to the utility will just sort them. ``` ## Versions A "version" is described by the `v2.0.0` specification found at <https://semver.org/>. A leading `"="` or `"v"` character is stripped off and ignored. ## Ranges A `version range` is a set of `comparators` which specify versions that satisfy the range. A `comparator` is composed of an `operator` and a `version`. The set of primitive `operators` is: * `<` Less than * `<=` Less than or equal to * `>` Greater than * `>=` Greater than or equal to * `=` Equal. If no operator is specified, then equality is assumed, so this operator is optional, but MAY be included. For example, the comparator `>=1.2.7` would match the versions `1.2.7`, `1.2.8`, `2.5.3`, and `1.3.9`, but not the versions `1.2.6` or `1.1.0`. Comparators can be joined by whitespace to form a `comparator set`, which is satisfied by the **intersection** of all of the comparators it includes. A range is composed of one or more comparator sets, joined by `||`. A version matches a range if and only if every comparator in at least one of the `||`-separated comparator sets is satisfied by the version. For example, the range `>=1.2.7 <1.3.0` would match the versions `1.2.7`, `1.2.8`, and `1.2.99`, but not the versions `1.2.6`, `1.3.0`, or `1.1.0`. The range `1.2.7 || >=1.2.9 <2.0.0` would match the versions `1.2.7`, `1.2.9`, and `1.4.6`, but not the versions `1.2.8` or `2.0.0`. ### Prerelease Tags If a version has a prerelease tag (for example, `1.2.3-alpha.3`) then it will only be allowed to satisfy comparator sets if at least one comparator with the same `[major, minor, patch]` tuple also has a prerelease tag. For example, the range `>1.2.3-alpha.3` would be allowed to match the version `1.2.3-alpha.7`, but it would *not* be satisfied by `3.4.5-alpha.9`, even though `3.4.5-alpha.9` is technically "greater than" `1.2.3-alpha.3` according to the SemVer sort rules. The version range only accepts prerelease tags on the `1.2.3` version. The version `3.4.5` *would* satisfy the range, because it does not have a prerelease flag, and `3.4.5` is greater than `1.2.3-alpha.7`. The purpose for this behavior is twofold. First, prerelease versions frequently are updated very quickly, and contain many breaking changes that are (by the author's design) not yet fit for public consumption. Therefore, by default, they are excluded from range matching semantics. Second, a user who has opted into using a prerelease version has clearly indicated the intent to use *that specific* set of alpha/beta/rc versions. By including a prerelease tag in the range, the user is indicating that they are aware of the risk. However, it is still not appropriate to assume that they have opted into taking a similar risk on the *next* set of prerelease versions. Note that this behavior can be suppressed (treating all prerelease versions as if they were normal versions, for the purpose of range matching) by setting the `includePrerelease` flag on the options object to any [functions](https://github.com/npm/node-semver#functions) that do range matching. #### Prerelease Identifiers The method `.inc` takes an additional `identifier` string argument that will append the value of the string as a prerelease identifier: ```javascript semver.inc('1.2.3', 'prerelease', 'beta') // '1.2.4-beta.0' ``` command-line example: ```bash $ semver 1.2.3 -i prerelease --preid beta 1.2.4-beta.0 ``` Which then can be used to increment further: ```bash $ semver 1.2.4-beta.0 -i prerelease 1.2.4-beta.1 ``` ### Advanced Range Syntax Advanced range syntax desugars to primitive comparators in deterministic ways. Advanced ranges may be combined in the same way as primitive comparators using white space or `||`. #### Hyphen Ranges `X.Y.Z - A.B.C` Specifies an inclusive set. * `1.2.3 - 2.3.4` := `>=1.2.3 <=2.3.4` If a partial version is provided as the first version in the inclusive range, then the missing pieces are replaced with zeroes. * `1.2 - 2.3.4` := `>=1.2.0 <=2.3.4` If a partial version is provided as the second version in the inclusive range, then all versions that start with the supplied parts of the tuple are accepted, but nothing that would be greater than the provided tuple parts. * `1.2.3 - 2.3` := `>=1.2.3 <2.4.0` * `1.2.3 - 2` := `>=1.2.3 <3.0.0` #### X-Ranges `1.2.x` `1.X` `1.2.*` `*` Any of `X`, `x`, or `*` may be used to "stand in" for one of the numeric values in the `[major, minor, patch]` tuple. * `*` := `>=0.0.0` (Any version satisfies) * `1.x` := `>=1.0.0 <2.0.0` (Matching major version) * `1.2.x` := `>=1.2.0 <1.3.0` (Matching major and minor versions) A partial version range is treated as an X-Range, so the special character is in fact optional. * `""` (empty string) := `*` := `>=0.0.0` * `1` := `1.x.x` := `>=1.0.0 <2.0.0` * `1.2` := `1.2.x` := `>=1.2.0 <1.3.0` #### Tilde Ranges `~1.2.3` `~1.2` `~1` Allows patch-level changes if a minor version is specified on the comparator. Allows minor-level changes if not. * `~1.2.3` := `>=1.2.3 <1.(2+1).0` := `>=1.2.3 <1.3.0` * `~1.2` := `>=1.2.0 <1.(2+1).0` := `>=1.2.0 <1.3.0` (Same as `1.2.x`) * `~1` := `>=1.0.0 <(1+1).0.0` := `>=1.0.0 <2.0.0` (Same as `1.x`) * `~0.2.3` := `>=0.2.3 <0.(2+1).0` := `>=0.2.3 <0.3.0` * `~0.2` := `>=0.2.0 <0.(2+1).0` := `>=0.2.0 <0.3.0` (Same as `0.2.x`) * `~0` := `>=0.0.0 <(0+1).0.0` := `>=0.0.0 <1.0.0` (Same as `0.x`) * `~1.2.3-beta.2` := `>=1.2.3-beta.2 <1.3.0` Note that prereleases in the `1.2.3` version will be allowed, if they are greater than or equal to `beta.2`. So, `1.2.3-beta.4` would be allowed, but `1.2.4-beta.2` would not, because it is a prerelease of a different `[major, minor, patch]` tuple. #### Caret Ranges `^1.2.3` `^0.2.5` `^0.0.4` Allows changes that do not modify the left-most non-zero element in the `[major, minor, patch]` tuple. In other words, this allows patch and minor updates for versions `1.0.0` and above, patch updates for versions `0.X >=0.1.0`, and *no* updates for versions `0.0.X`. Many authors treat a `0.x` version as if the `x` were the major "breaking-change" indicator. Caret ranges are ideal when an author may make breaking changes between `0.2.4` and `0.3.0` releases, which is a common practice. However, it presumes that there will *not* be breaking changes between `0.2.4` and `0.2.5`. It allows for changes that are presumed to be additive (but non-breaking), according to commonly observed practices. * `^1.2.3` := `>=1.2.3 <2.0.0` * `^0.2.3` := `>=0.2.3 <0.3.0` * `^0.0.3` := `>=0.0.3 <0.0.4` * `^1.2.3-beta.2` := `>=1.2.3-beta.2 <2.0.0` Note that prereleases in the `1.2.3` version will be allowed, if they are greater than or equal to `beta.2`. So, `1.2.3-beta.4` would be allowed, but `1.2.4-beta.2` would not, because it is a prerelease of a different `[major, minor, patch]` tuple. * `^0.0.3-beta` := `>=0.0.3-beta <0.0.4` Note that prereleases in the `0.0.3` version *only* will be allowed, if they are greater than or equal to `beta`. So, `0.0.3-pr.2` would be allowed. When parsing caret ranges, a missing `patch` value desugars to the number `0`, but will allow flexibility within that value, even if the major and minor versions are both `0`. * `^1.2.x` := `>=1.2.0 <2.0.0` * `^0.0.x` := `>=0.0.0 <0.1.0` * `^0.0` := `>=0.0.0 <0.1.0` A missing `minor` and `patch` values will desugar to zero, but also allow flexibility within those values, even if the major version is zero. * `^1.x` := `>=1.0.0 <2.0.0` * `^0.x` := `>=0.0.0 <1.0.0` ### Range Grammar Putting all this together, here is a Backus-Naur grammar for ranges, for the benefit of parser authors: ```bnf range-set ::= range ( logical-or range ) * logical-or ::= ( ' ' ) * '||' ( ' ' ) * range ::= hyphen | simple ( ' ' simple ) * | '' hyphen ::= partial ' - ' partial simple ::= primitive | partial | tilde | caret primitive ::= ( '<' | '>' | '>=' | '<=' | '=' ) partial partial ::= xr ( '.' xr ( '.' xr qualifier ? )? )? xr ::= 'x' | 'X' | '*' | nr nr ::= '0' | ['1'-'9'] ( ['0'-'9'] ) * tilde ::= '~' partial caret ::= '^' partial qualifier ::= ( '-' pre )? ( '+' build )? pre ::= parts build ::= parts parts ::= part ( '.' part ) * part ::= nr | [-0-9A-Za-z]+ ``` ## Functions All methods and classes take a final `options` object argument. All options in this object are `false` by default. The options supported are: - `loose` Be more forgiving about not-quite-valid semver strings. (Any resulting output will always be 100% strict compliant, of course.) For backwards compatibility reasons, if the `options` argument is a boolean value instead of an object, it is interpreted to be the `loose` param. - `includePrerelease` Set to suppress the [default behavior](https://github.com/npm/node-semver#prerelease-tags) of excluding prerelease tagged versions from ranges unless they are explicitly opted into. Strict-mode Comparators and Ranges will be strict about the SemVer strings that they parse. * `valid(v)`: Return the parsed version, or null if it's not valid. * `inc(v, release)`: Return the version incremented by the release type (`major`, `premajor`, `minor`, `preminor`, `patch`, `prepatch`, or `prerelease`), or null if it's not valid * `premajor` in one call will bump the version up to the next major version and down to a prerelease of that major version. `preminor`, and `prepatch` work the same way. * If called from a non-prerelease version, the `prerelease` will work the same as `prepatch`. It increments the patch version, then makes a prerelease. If the input version is already a prerelease it simply increments it. * `prerelease(v)`: Returns an array of prerelease components, or null if none exist. Example: `prerelease('1.2.3-alpha.1') -> ['alpha', 1]` * `major(v)`: Return the major version number. * `minor(v)`: Return the minor version number. * `patch(v)`: Return the patch version number. * `intersects(r1, r2, loose)`: Return true if the two supplied ranges or comparators intersect. * `parse(v)`: Attempt to parse a string as a semantic version, returning either a `SemVer` object or `null`. ### Comparison * `gt(v1, v2)`: `v1 > v2` * `gte(v1, v2)`: `v1 >= v2` * `lt(v1, v2)`: `v1 < v2` * `lte(v1, v2)`: `v1 <= v2` * `eq(v1, v2)`: `v1 == v2` This is true if they're logically equivalent, even if they're not the exact same string. You already know how to compare strings. * `neq(v1, v2)`: `v1 != v2` The opposite of `eq`. * `cmp(v1, comparator, v2)`: Pass in a comparison string, and it'll call the corresponding function above. `"==="` and `"!=="` do simple string comparison, but are included for completeness. Throws if an invalid comparison string is provided. * `compare(v1, v2)`: Return `0` if `v1 == v2`, or `1` if `v1` is greater, or `-1` if `v2` is greater. Sorts in ascending order if passed to `Array.sort()`. * `rcompare(v1, v2)`: The reverse of compare. Sorts an array of versions in descending order when passed to `Array.sort()`. * `compareBuild(v1, v2)`: The same as `compare` but considers `build` when two versions are equal. Sorts in ascending order if passed to `Array.sort()`. `v2` is greater. Sorts in ascending order if passed to `Array.sort()`. * `diff(v1, v2)`: Returns difference between two versions by the release type (`major`, `premajor`, `minor`, `preminor`, `patch`, `prepatch`, or `prerelease`), or null if the versions are the same. ### Comparators * `intersects(comparator)`: Return true if the comparators intersect ### Ranges * `validRange(range)`: Return the valid range or null if it's not valid * `satisfies(version, range)`: Return true if the version satisfies the range. * `maxSatisfying(versions, range)`: Return the highest version in the list that satisfies the range, or `null` if none of them do. * `minSatisfying(versions, range)`: Return the lowest version in the list that satisfies the range, or `null` if none of them do. * `minVersion(range)`: Return the lowest version that can possibly match the given range. * `gtr(version, range)`: Return `true` if version is greater than all the versions possible in the range. * `ltr(version, range)`: Return `true` if version is less than all the versions possible in the range. * `outside(version, range, hilo)`: Return true if the version is outside the bounds of the range in either the high or low direction. The `hilo` argument must be either the string `'>'` or `'<'`. (This is the function called by `gtr` and `ltr`.) * `intersects(range)`: Return true if any of the ranges comparators intersect Note that, since ranges may be non-contiguous, a version might not be greater than a range, less than a range, *or* satisfy a range! For example, the range `1.2 <1.2.9 || >2.0.0` would have a hole from `1.2.9` until `2.0.0`, so the version `1.2.10` would not be greater than the range (because `2.0.1` satisfies, which is higher), nor less than the range (since `1.2.8` satisfies, which is lower), and it also does not satisfy the range. If you want to know if a version satisfies or does not satisfy a range, use the `satisfies(version, range)` function. ### Coercion * `coerce(version, options)`: Coerces a string to semver if possible This aims to provide a very forgiving translation of a non-semver string to semver. It looks for the first digit in a string, and consumes all remaining characters which satisfy at least a partial semver (e.g., `1`, `1.2`, `1.2.3`) up to the max permitted length (256 characters). Longer versions are simply truncated (`4.6.3.9.2-alpha2` becomes `4.6.3`). All surrounding text is simply ignored (`v3.4 replaces v3.3.1` becomes `3.4.0`). Only text which lacks digits will fail coercion (`version one` is not valid). The maximum length for any semver component considered for coercion is 16 characters; longer components will be ignored (`10000000000000000.4.7.4` becomes `4.7.4`). The maximum value for any semver component is `Integer.MAX_SAFE_INTEGER || (2**53 - 1)`; higher value components are invalid (`9999999999999999.4.7.4` is likely invalid). If the `options.rtl` flag is set, then `coerce` will return the right-most coercible tuple that does not share an ending index with a longer coercible tuple. For example, `1.2.3.4` will return `2.3.4` in rtl mode, not `4.0.0`. `1.2.3/4` will return `4.0.0`, because the `4` is not a part of any other overlapping SemVer tuple. ### Clean * `clean(version)`: Clean a string to be a valid semver if possible This will return a cleaned and trimmed semver version. If the provided version is not valid a null will be returned. This does not work for ranges. ex. * `s.clean(' = v 2.1.5foo')`: `null` * `s.clean(' = v 2.1.5foo', { loose: true })`: `'2.1.5-foo'` * `s.clean(' = v 2.1.5-foo')`: `null` * `s.clean(' = v 2.1.5-foo', { loose: true })`: `'2.1.5-foo'` * `s.clean('=v2.1.5')`: `'2.1.5'` * `s.clean(' =v2.1.5')`: `2.1.5` * `s.clean(' 2.1.5 ')`: `'2.1.5'` * `s.clean('~1.0.0')`: `null` A JSON with color names and its values. Based on http://dev.w3.org/csswg/css-color/#named-colors. [](https://nodei.co/npm/color-name/) ```js var colors = require('color-name'); colors.red //[255,0,0] ``` <a href="LICENSE"><img src="https://upload.wikimedia.org/wikipedia/commons/0/0c/MIT_logo.svg" width="120"/></a> Compiler frontend for node.js ============================= Usage ----- For an up to date list of available command line options, see: ``` $> asc --help ``` API --- The API accepts the same options as the CLI but also lets you override stdout and stderr and/or provide a callback. Example: ```js const asc = require("assemblyscript/cli/asc"); asc.ready.then(() => { asc.main([ "myModule.ts", "--binaryFile", "myModule.wasm", "--optimize", "--sourceMap", "--measure" ], { stdout: process.stdout, stderr: process.stderr }, function(err) { if (err) throw err; ... }); }); ``` Available command line options can also be obtained programmatically: ```js const options = require("assemblyscript/cli/asc.json"); ... ``` You can also compile a source string directly, for example in a browser environment: ```js const asc = require("assemblyscript/cli/asc"); asc.ready.then(() => { const { binary, text, stdout, stderr } = asc.compileString(`...`, { optimize: 2 }); }); ... ``` # Visitor utilities for AssemblyScript Compiler transformers ## Example ### List Fields The transformer: ```ts import { ClassDeclaration, FieldDeclaration, MethodDeclaration, } from "../../as"; import { ClassDecorator, registerDecorator } from "../decorator"; import { toString } from "../utils"; class ListMembers extends ClassDecorator { visitFieldDeclaration(node: FieldDeclaration): void { if (!node.name) console.log(toString(node) + "\n"); const name = toString(node.name); const _type = toString(node.type!); this.stdout.write(name + ": " + _type + "\n"); } visitMethodDeclaration(node: MethodDeclaration): void { const name = toString(node.name); if (name == "constructor") { return; } const sig = toString(node.signature); this.stdout.write(name + ": " + sig + "\n"); } visitClassDeclaration(node: ClassDeclaration): void { this.visit(node.members); } get name(): string { return "list"; } } export = registerDecorator(new ListMembers()); ``` assembly/foo.ts: ```ts @list class Foo { a: u8; b: bool; i: i32; } ``` And then compile with `--transform` flag: ``` asc assembly/foo.ts --transform ./dist/examples/list --noEmit ``` Which prints the following to the console: ``` a: u8 b: bool i: i32 ``` # Javascript Error Polyfill [](https://travis-ci.org/inf3rno/error-polyfill) Implementing the [V8 Stack Trace API](https://github.com/v8/v8/wiki/Stack-Trace-API) in non-V8 environments as much as possible ## Installation ```bash npm install error-polyfill ``` ```bash bower install error-polyfill ``` ### Environment compatibility Tested on the following environments: Windows 7 - **Node.js** 9.6 - **Chrome** 64.0 - **Firefox** 58.0 - **Internet Explorer** 10.0, 11.0 - **PhantomJS** 2.1 - **Opera** 51.0 Travis - **Node.js** 8, 9 - **Chrome** - **Firefox** - **PhantomJS** The polyfill might work on other environments too due to its adaptive design. I use [Karma](https://github.com/karma-runner/karma) with [Browserify](https://github.com/substack/node-browserify) to test the framework in browsers. ### Requirements ES5 support is required, without that the lib throws an Error and stops working. The ES5 features are tested by the [capability](https://github.com/inf3rno/capability) lib run time. Classes are created by the [o3](https://github.com/inf3rno/o3) lib. Utility functions are implemented in the [u3](https://github.com/inf3rno/u3) lib. ## API documentation ### Usage In this documentation I used the framework as follows: ```js require("error-polyfill"); // <- your code here ``` It is recommended to require the polyfill in your main script. ### Getting a past stack trace with `Error.getStackTrace` This static method is not part of the V8 Stack Trace API, but it is recommended to **use `Error.getStackTrace(throwable)` instead of `throwable.stack`** to get the stack trace of Error instances! Explanation: By non-V8 environments we cannot replace the default stack generation algorithm, so we need a workaround to generate the stack when somebody tries to access it. So the original stack string will be parsed and the result will be properly formatted by accessing the stack using the `Error.getStackTrace` method. Arguments and return values: - The `throwable` argument should be an `Error` (descendant) instance, but it can be an `Object` instance as well. - The return value is the generated `stack` of the `throwable` argument. Example: ```js try { theNotDefinedFunction(); } catch (error) { console.log(Error.getStackTrace(error)); // ReferenceError: theNotDefinedFunction is not defined // at ... // ... } ``` ### Capturing the present stack trace with `Error.captureStackTrace` The `Error.captureStackTrace(throwable [, terminator])` sets the present stack above the `terminator` on the `throwable`. Arguments and return values: - The `throwable` argument should be an instance of an `Error` descendant, but it can be an `Object` instance as well. It is recommended to use `Error` descendant instances instead of inline objects, because we can recognize them by type e.g. `error instanceof UserError`. - The optional `terminator` argument should be a `Function`. Only the calls before this function will be reported in the stack, so without a `terminator` argument, the last call in the stack will be the call of the `Error.captureStackTrace`. - There is no return value, the `stack` will be set on the `throwable` so you will be able to access it using `Error.getStackTrace`. The format of the stack depends on the `Error.prepareStackTrace` implementation. Example: ```js var UserError = function (message){ this.name = "UserError"; this.message = message; Error.captureStackTrace(this, this.constructor); }; UserError.prototype = Object.create(Error.prototype); function codeSmells(){ throw new UserError("What's going on?!"); } codeSmells(); // UserError: What's going on?! // at codeSmells (myModule.js:23:1) // ... ``` Limitations: By the current implementation the `terminator` can be only the `Error.captureStackTrace` caller function. This will change soon, but in certain conditions, e.g. by using strict mode (`"use strict";`) it is not possible to access the information necessary to implement this feature. You will get an empty `frames` array and a `warning` in the `Error.prepareStackTrace` when the stack parser meets with such conditions. ### Formatting the stack trace with `Error.prepareStackTrace` The `Error.prepareStackTrace(throwable, frames [, warnings])` formats the stack `frames` and returns the `stack` value for `Error.captureStackTrace` or `Error.getStackTrace`. The native implementation returns a stack string, but you can override that by setting a new function value. Arguments and return values: - The `throwable` argument is an `Error` or `Object` instance coming from the `Error.captureStackTrace` or from the creation of a new `Error` instance. Be aware that in some environments you need to throw that instance to get a parsable stack. Without that you will get only a `warning` by trying to access the stack with `Error.getStackTrace`. - The `frames` argument is an array of `Frame` instances. Each `frame` represents a function call in the stack. You can use these frames to build a stack string. To access information about individual frames you can use the following methods. - `frame.toString()` - Returns the string representation of the frame, e.g. `codeSmells (myModule.js:23:1)`. - `frame.getThis()` - **Cannot be supported.** Returns the context of the call, only V8 environments support this natively. - `frame.getTypeName()` - **Not implemented yet.** Returns the type name of the context, by the global namespace it is `Window` in Chrome. - `frame.getFunction()` - Returns the called function or `undefined` by strict mode. - `frame.getFunctionName()` - **Not implemented yet.** Returns the name of the called function. - `frame.getMethodName()` - **Not implemented yet.** Returns the method name of the called function is a method of an object. - `frame.getFileName()` - **Not implemented yet.** Returns the file name where the function was called. - `frame.getLineNumber()` - **Not implemented yet.** Returns at which line the function was called in the file. - `frame.getColumnNumber()` - **Not implemented yet.** Returns at which column the function was called in the file. This information is not always available. - `frame.getEvalOrigin()` - **Not implemented yet.** Returns the original of an `eval` call. - `frame.isTopLevel()` - **Not implemented yet.** Returns whether the function was called from the top level. - `frame.isEval()` - **Not implemented yet.** Returns whether the called function was `eval`. - `frame.isNative()` - **Not implemented yet.** Returns whether the called function was native. - `frame.isConstructor()` - **Not implemented yet.** Returns whether the called function was a constructor. - The optional `warnings` argument contains warning messages coming from the stack parser. It is not part of the V8 Stack Trace API. - The return value will be the stack you can access with `Error.getStackTrace(throwable)`. If it is an object, it is recommended to add a `toString` method, so you will be able to read it in the console. Example: ```js Error.prepareStackTrace = function (throwable, frames, warnings) { var string = ""; string += throwable.name || "Error"; string += ": " + (throwable.message || ""); if (warnings instanceof Array) for (var warningIndex in warnings) { var warning = warnings[warningIndex]; string += "\n # " + warning; } for (var frameIndex in frames) { var frame = frames[frameIndex]; string += "\n at " + frame.toString(); } return string; }; ``` ### Stack trace size limits with `Error.stackTraceLimit` **Not implemented yet.** You can set size limits on the stack trace, so you won't have any problems because of too long stack traces. Example: ```js Error.stackTraceLimit = 10; ``` ### Handling uncaught errors and rejections **Not implemented yet.** ## Differences between environments and modes Since there is no Stack Trace API standard, every browsers solves this problem differently. I try to document what I've found about these differences as detailed as possible, so it will be easier to follow the code. Overriding the `error.stack` property with custom Stack instances - by Node.js and Chrome the `Error.prepareStackTrace()` can override every `error.stack` automatically right by creation - by Firefox, Internet Explorer and Opera you cannot automatically override every `error.stack` by native errors - by PhantomJS you cannot override the `error.stack` property of native errors, it is not configurable Capturing the current stack trace - by Node.js, Chrome, Firefox and Opera the stack property is added by instantiating a native error - by Node.js and Chrome the stack creation is lazy loaded and cached, so the `Error.prepareStackTrace()` is called only by the first access - by Node.js and Chrome the current stack can be added to any object with `Error.captureStackTrace()` - by Internet Explorer the stack is created by throwing a native error - by PhantomJS the stack is created by throwing any object, but not a primitive Accessing the stack - by Node.js, Chrome, Firefox, Internet Explorer, Opera and PhantomJS you can use the `error.stack` property - by old Opera you have to use the `error.stacktrace` property to get the stack Prefixes and postfixes on the stack string - by Node.js, Chrome, Internet Explorer and Opera you have the `error.name` and the `error.message` in a `{name}: {message}` format at the beginning of the stack string - by Firefox and PhantomJS the stack string does not contain the `error.name` and the `error.message` - by Firefox you have an empty line at the end of the stack string Accessing the stack frames array - by Node.js and Chrome you can access the frame objects directly by overriding the `Error.prepareStackTrace()` - by Firefox, Internet Explorer, PhantomJS, and Opera you need to parse the stack string in order to get the frames The structure of the frame string - by Node.js and Chrome - the frame string of calling a function from a module: `thirdFn (http://localhost/myModule.js:45:29)` - the frame strings contain an ` at ` prefix, which is not present by the `frame.toString()` output, so it is added by the `stack.toString()` - by Firefox - the frame string of calling a function from a module: `thirdFn@http://localhost/myModule.js:45:29` - by Internet Explorer - the frame string of calling a function from a module: ` at thirdFn (http://localhost/myModule.js:45:29)` - by PhantomJS - the frame string of calling a function from a module: `thirdFn@http://localhost/myModule.js:45:29` - by Opera - the frame string of calling a function from a module: ` at thirdFn (http://localhost/myModule.js:45)` Accessing information by individual frames - by Node.js and Chrome the `frame.getThis()` and the `frame.getFunction()` returns `undefined` by frames originate from [strict mode](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Strict_mode) code - by Firefox, Internet Explorer, PhantomJS, and Opera the context of the function calls is not accessible, so the `frame.getThis()` cannot be implemented - by Firefox, Internet Explorer, PhantomJS, and Opera functions are not accessible with `arguments.callee.caller` by frames originate from strict mode, so by these frames `frame.getFunction()` can return only `undefined` (this is consistent with V8 behavior) ## License MIT - 2016 Jánszky László Lajos # prelude.ls [](https://travis-ci.org/gkz/prelude-ls) is a functionally oriented utility library. It is powerful and flexible. Almost all of its functions are curried. It is written in, and is the recommended base library for, <a href="http://livescript.net">LiveScript</a>. See **[the prelude.ls site](http://preludels.com)** for examples, a reference, and more. You can install via npm `npm install prelude-ls` ### Development `make test` to test `make build` to build `lib` from `src` `make build-browser` to build browser versions # base-x [](https://www.npmjs.org/package/base-x) [](https://travis-ci.org/cryptocoinjs/base-x) [](https://github.com/feross/standard) Fast base encoding / decoding of any given alphabet using bitcoin style leading zero compression. **WARNING:** This module is **NOT RFC3548** compliant, it cannot be used for base16 (hex), base32, or base64 encoding in a standards compliant manner. ## Example Base58 ``` javascript var BASE58 = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz' var bs58 = require('base-x')(BASE58) var decoded = bs58.decode('5Kd3NBUAdUnhyzenEwVLy9pBKxSwXvE9FMPyR4UKZvpe6E3AgLr') console.log(decoded) // => <Buffer 80 ed db dc 11 68 f1 da ea db d3 e4 4c 1e 3f 8f 5a 28 4c 20 29 f7 8a d2 6a f9 85 83 a4 99 de 5b 19> console.log(bs58.encode(decoded)) // => 5Kd3NBUAdUnhyzenEwVLy9pBKxSwXvE9FMPyR4UKZvpe6E3AgLr ``` ### Alphabets See below for a list of commonly recognized alphabets, and their respective base. Base | Alphabet ------------- | ------------- 2 | `01` 8 | `01234567` 11 | `0123456789a` 16 | `0123456789abcdef` 32 | `0123456789ABCDEFGHJKMNPQRSTVWXYZ` 32 | `ybndrfg8ejkmcpqxot1uwisza345h769` (z-base-32) 36 | `0123456789abcdefghijklmnopqrstuvwxyz` 58 | `123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz` 62 | `0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ` 64 | `ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/` 67 | `ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_.!~` ## How it works It encodes octet arrays by doing long divisions on all significant digits in the array, creating a representation of that number in the new base. Then for every leading zero in the input (not significant as a number) it will encode as a single leader character. This is the first in the alphabet and will decode as 8 bits. The other characters depend upon the base. For example, a base58 alphabet packs roughly 5.858 bits per character. This means the encoded string 000f (using a base16, 0-f alphabet) will actually decode to 4 bytes unlike a canonical hex encoding which uniformly packs 4 bits into each character. While unusual, this does mean that no padding is required and it works for bases like 43. ## LICENSE [MIT](LICENSE) A direct derivation of the base58 implementation from [`bitcoin/bitcoin`](https://github.com/bitcoin/bitcoin/blob/f1e2f2a85962c1664e4e55471061af0eaa798d40/src/base58.cpp), generalized for variable length alphabets. # balanced-match Match balanced string pairs, like `{` and `}` or `<b>` and `</b>`. Supports regular expressions as well! [](http://travis-ci.org/juliangruber/balanced-match) [](https://www.npmjs.org/package/balanced-match) [](https://ci.testling.com/juliangruber/balanced-match) ## Example Get the first matching pair of braces: ```js var balanced = require('balanced-match'); console.log(balanced('{', '}', 'pre{in{nested}}post')); console.log(balanced('{', '}', 'pre{first}between{second}post')); console.log(balanced(/\s+\{\s+/, /\s+\}\s+/, 'pre { in{nest} } post')); ``` The matches are: ```bash $ node example.js { start: 3, end: 14, pre: 'pre', body: 'in{nested}', post: 'post' } { start: 3, end: 9, pre: 'pre', body: 'first', post: 'between{second}post' } { start: 3, end: 17, pre: 'pre', body: 'in{nest}', post: 'post' } ``` ## API ### var m = balanced(a, b, str) For the first non-nested matching pair of `a` and `b` in `str`, return an object with those keys: * **start** the index of the first match of `a` * **end** the index of the matching `b` * **pre** the preamble, `a` and `b` not included * **body** the match, `a` and `b` not included * **post** the postscript, `a` and `b` not included If there's no match, `undefined` will be returned. If the `str` contains more `a` than `b` / there are unmatched pairs, the first match that was closed will be used. For example, `{{a}` will match `['{', 'a', '']` and `{a}}` will match `['', 'a', '}']`. ### var r = balanced.range(a, b, str) For the first non-nested matching pair of `a` and `b` in `str`, return an array with indexes: `[ <a index>, <b index> ]`. If there's no match, `undefined` will be returned. If the `str` contains more `a` than `b` / there are unmatched pairs, the first match that was closed will be used. For example, `{{a}` will match `[ 1, 3 ]` and `{a}}` will match `[0, 2]`. ## Installation With [npm](https://npmjs.org) do: ```bash npm install balanced-match ``` ## Security contact information To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. ## License (MIT) Copyright (c) 2013 Julian Gruber &lt;julian@juliangruber.com&gt; Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # URI.js URI.js is an [RFC 3986](http://www.ietf.org/rfc/rfc3986.txt) compliant, scheme extendable URI parsing/validating/resolving library for all JavaScript environments (browsers, Node.js, etc). It is also compliant with the IRI ([RFC 3987](http://www.ietf.org/rfc/rfc3987.txt)), IDNA ([RFC 5890](http://www.ietf.org/rfc/rfc5890.txt)), IPv6 Address ([RFC 5952](http://www.ietf.org/rfc/rfc5952.txt)), IPv6 Zone Identifier ([RFC 6874](http://www.ietf.org/rfc/rfc6874.txt)) specifications. URI.js has an extensive test suite, and works in all (Node.js, web) environments. It weighs in at 6.4kb (gzipped, 17kb deflated). ## API ### Parsing URI.parse("uri://user:pass@example.com:123/one/two.three?q1=a1&q2=a2#body"); //returns: //{ // scheme : "uri", // userinfo : "user:pass", // host : "example.com", // port : 123, // path : "/one/two.three", // query : "q1=a1&q2=a2", // fragment : "body" //} ### Serializing URI.serialize({scheme : "http", host : "example.com", fragment : "footer"}) === "http://example.com/#footer" ### Resolving URI.resolve("uri://a/b/c/d?q", "../../g") === "uri://a/g" ### Normalizing URI.normalize("HTTP://ABC.com:80/%7Esmith/home.html") === "http://abc.com/~smith/home.html" ### Comparison URI.equal("example://a/b/c/%7Bfoo%7D", "eXAMPLE://a/./b/../b/%63/%7bfoo%7d") === true ### IP Support //IPv4 normalization URI.normalize("//192.068.001.000") === "//192.68.1.0" //IPv6 normalization URI.normalize("//[2001:0:0DB8::0:0001]") === "//[2001:0:db8::1]" //IPv6 zone identifier support URI.parse("//[2001:db8::7%25en1]"); //returns: //{ // host : "2001:db8::7%en1" //} ### IRI Support //convert IRI to URI URI.serialize(URI.parse("http://examplé.org/rosé")) === "http://xn--exampl-gva.org/ros%C3%A9" //convert URI to IRI URI.serialize(URI.parse("http://xn--exampl-gva.org/ros%C3%A9"), {iri:true}) === "http://examplé.org/rosé" ### Options All of the above functions can accept an additional options argument that is an object that can contain one or more of the following properties: * `scheme` (string) Indicates the scheme that the URI should be treated as, overriding the URI's normal scheme parsing behavior. * `reference` (string) If set to `"suffix"`, it indicates that the URI is in the suffix format, and the validator will use the option's `scheme` property to determine the URI's scheme. * `tolerant` (boolean, false) If set to `true`, the parser will relax URI resolving rules. * `absolutePath` (boolean, false) If set to `true`, the serializer will not resolve a relative `path` component. * `iri` (boolean, false) If set to `true`, the serializer will unescape non-ASCII characters as per [RFC 3987](http://www.ietf.org/rfc/rfc3987.txt). * `unicodeSupport` (boolean, false) If set to `true`, the parser will unescape non-ASCII characters in the parsed output as per [RFC 3987](http://www.ietf.org/rfc/rfc3987.txt). * `domainHost` (boolean, false) If set to `true`, the library will treat the `host` component as a domain name, and convert IDNs (International Domain Names) as per [RFC 5891](http://www.ietf.org/rfc/rfc5891.txt). ## Scheme Extendable URI.js supports inserting custom [scheme](http://en.wikipedia.org/wiki/URI_scheme) dependent processing rules. Currently, URI.js has built in support for the following schemes: * http \[[RFC 2616](http://www.ietf.org/rfc/rfc2616.txt)\] * https \[[RFC 2818](http://www.ietf.org/rfc/rfc2818.txt)\] * ws \[[RFC 6455](http://www.ietf.org/rfc/rfc6455.txt)\] * wss \[[RFC 6455](http://www.ietf.org/rfc/rfc6455.txt)\] * mailto \[[RFC 6068](http://www.ietf.org/rfc/rfc6068.txt)\] * urn \[[RFC 2141](http://www.ietf.org/rfc/rfc2141.txt)\] * urn:uuid \[[RFC 4122](http://www.ietf.org/rfc/rfc4122.txt)\] ### HTTP/HTTPS Support URI.equal("HTTP://ABC.COM:80", "http://abc.com/") === true URI.equal("https://abc.com", "HTTPS://ABC.COM:443/") === true ### WS/WSS Support URI.parse("wss://example.com/foo?bar=baz"); //returns: //{ // scheme : "wss", // host: "example.com", // resourceName: "/foo?bar=baz", // secure: true, //} URI.equal("WS://ABC.COM:80/chat#one", "ws://abc.com/chat") === true ### Mailto Support URI.parse("mailto:alpha@example.com,bravo@example.com?subject=SUBSCRIBE&body=Sign%20me%20up!"); //returns: //{ // scheme : "mailto", // to : ["alpha@example.com", "bravo@example.com"], // subject : "SUBSCRIBE", // body : "Sign me up!" //} URI.serialize({ scheme : "mailto", to : ["alpha@example.com"], subject : "REMOVE", body : "Please remove me", headers : { cc : "charlie@example.com" } }) === "mailto:alpha@example.com?cc=charlie@example.com&subject=REMOVE&body=Please%20remove%20me" ### URN Support URI.parse("urn:example:foo"); //returns: //{ // scheme : "urn", // nid : "example", // nss : "foo", //} #### URN UUID Support URI.parse("urn:uuid:f81d4fae-7dec-11d0-a765-00a0c91e6bf6"); //returns: //{ // scheme : "urn", // nid : "uuid", // uuid : "f81d4fae-7dec-11d0-a765-00a0c91e6bf6", //} ## Usage To load in a browser, use the following tag: <script type="text/javascript" src="uri-js/dist/es5/uri.all.min.js"></script> To load in a CommonJS/Module environment, first install with npm/yarn by running on the command line: npm install uri-js # OR yarn add uri-js Then, in your code, load it using: const URI = require("uri-js"); If you are writing your code in ES6+ (ESNEXT) or TypeScript, you would load it using: import * as URI from "uri-js"; Or you can load just what you need using named exports: import { parse, serialize, resolve, resolveComponents, normalize, equal, removeDotSegments, pctEncChar, pctDecChars, escapeComponent, unescapeComponent } from "uri-js"; ## Breaking changes ### Breaking changes from 3.x URN parsing has been completely changed to better align with the specification. Scheme is now always `urn`, but has two new properties: `nid` which contains the Namspace Identifier, and `nss` which contains the Namespace Specific String. The `nss` property will be removed by higher order scheme handlers, such as the UUID URN scheme handler. The UUID of a URN can now be found in the `uuid` property. ### Breaking changes from 2.x URI validation has been removed as it was slow, exposed a vulnerabilty, and was generally not useful. ### Breaking changes from 1.x The `errors` array on parsed components is now an `error` string. # debug [](https://travis-ci.org/visionmedia/debug) [](https://coveralls.io/github/visionmedia/debug?branch=master) [](https://visionmedia-community-slackin.now.sh/) [](#backers) [](#sponsors) <img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png"> A tiny JavaScript debugging utility modelled after Node.js core's debugging technique. Works in Node.js and web browsers. ## Installation ```bash $ npm install debug ``` ## Usage `debug` exposes a function; simply pass this function the name of your module, and it will return a decorated version of `console.error` for you to pass debug statements to. This will allow you to toggle the debug output for different parts of your module as well as the module as a whole. Example [_app.js_](./examples/node/app.js): ```js var debug = require('debug')('http') , http = require('http') , name = 'My App'; // fake app debug('booting %o', name); http.createServer(function(req, res){ debug(req.method + ' ' + req.url); res.end('hello\n'); }).listen(3000, function(){ debug('listening'); }); // fake worker of some kind require('./worker'); ``` Example [_worker.js_](./examples/node/worker.js): ```js var a = require('debug')('worker:a') , b = require('debug')('worker:b'); function work() { a('doing lots of uninteresting work'); setTimeout(work, Math.random() * 1000); } work(); function workb() { b('doing some work'); setTimeout(workb, Math.random() * 2000); } workb(); ``` The `DEBUG` environment variable is then used to enable these based on space or comma-delimited names. Here are some examples: <img width="647" alt="screen shot 2017-08-08 at 12 53 04 pm" src="https://user-images.githubusercontent.com/71256/29091703-a6302cdc-7c38-11e7-8304-7c0b3bc600cd.png"> <img width="647" alt="screen shot 2017-08-08 at 12 53 38 pm" src="https://user-images.githubusercontent.com/71256/29091700-a62a6888-7c38-11e7-800b-db911291ca2b.png"> <img width="647" alt="screen shot 2017-08-08 at 12 53 25 pm" src="https://user-images.githubusercontent.com/71256/29091701-a62ea114-7c38-11e7-826a-2692bedca740.png"> #### Windows command prompt notes ##### CMD On Windows the environment variable is set using the `set` command. ```cmd set DEBUG=*,-not_this ``` Example: ```cmd set DEBUG=* & node app.js ``` ##### PowerShell (VS Code default) PowerShell uses different syntax to set environment variables. ```cmd $env:DEBUG = "*,-not_this" ``` Example: ```cmd $env:DEBUG='app';node app.js ``` Then, run the program to be debugged as usual. npm script example: ```js "windowsDebug": "@powershell -Command $env:DEBUG='*';node app.js", ``` ## Namespace Colors Every debug instance has a color generated for it based on its namespace name. This helps when visually parsing the debug output to identify which debug instance a debug line belongs to. #### Node.js In Node.js, colors are enabled when stderr is a TTY. You also _should_ install the [`supports-color`](https://npmjs.org/supports-color) module alongside debug, otherwise debug will only use a small handful of basic colors. <img width="521" src="https://user-images.githubusercontent.com/71256/29092181-47f6a9e6-7c3a-11e7-9a14-1928d8a711cd.png"> #### Web Browser Colors are also enabled on "Web Inspectors" that understand the `%c` formatting option. These are WebKit web inspectors, Firefox ([since version 31](https://hacks.mozilla.org/2014/05/editable-box-model-multiple-selection-sublime-text-keys-much-more-firefox-developer-tools-episode-31/)) and the Firebug plugin for Firefox (any version). <img width="524" src="https://user-images.githubusercontent.com/71256/29092033-b65f9f2e-7c39-11e7-8e32-f6f0d8e865c1.png"> ## Millisecond diff When actively developing an application it can be useful to see when the time spent between one `debug()` call and the next. Suppose for example you invoke `debug()` before requesting a resource, and after as well, the "+NNNms" will show you how much time was spent between calls. <img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png"> When stdout is not a TTY, `Date#toISOString()` is used, making it more useful for logging the debug information as shown below: <img width="647" src="https://user-images.githubusercontent.com/71256/29091956-6bd78372-7c39-11e7-8c55-c948396d6edd.png"> ## Conventions If you're using this in one or more of your libraries, you _should_ use the name of your library so that developers may toggle debugging as desired without guessing names. If you have more than one debuggers you _should_ prefix them with your library name and use ":" to separate features. For example "bodyParser" from Connect would then be "connect:bodyParser". If you append a "*" to the end of your name, it will always be enabled regardless of the setting of the DEBUG environment variable. You can then use it for normal output as well as debug output. ## Wildcards The `*` character may be used as a wildcard. Suppose for example your library has debuggers named "connect:bodyParser", "connect:compress", "connect:session", instead of listing all three with `DEBUG=connect:bodyParser,connect:compress,connect:session`, you may simply do `DEBUG=connect:*`, or to run everything using this module simply use `DEBUG=*`. You can also exclude specific debuggers by prefixing them with a "-" character. For example, `DEBUG=*,-connect:*` would include all debuggers except those starting with "connect:". ## Environment Variables When running through Node.js, you can set a few environment variables that will change the behavior of the debug logging: | Name | Purpose | |-----------|-------------------------------------------------| | `DEBUG` | Enables/disables specific debugging namespaces. | | `DEBUG_HIDE_DATE` | Hide date from debug output (non-TTY). | | `DEBUG_COLORS`| Whether or not to use colors in the debug output. | | `DEBUG_DEPTH` | Object inspection depth. | | `DEBUG_SHOW_HIDDEN` | Shows hidden properties on inspected objects. | __Note:__ The environment variables beginning with `DEBUG_` end up being converted into an Options object that gets used with `%o`/`%O` formatters. See the Node.js documentation for [`util.inspect()`](https://nodejs.org/api/util.html#util_util_inspect_object_options) for the complete list. ## Formatters Debug uses [printf-style](https://wikipedia.org/wiki/Printf_format_string) formatting. Below are the officially supported formatters: | Formatter | Representation | |-----------|----------------| | `%O` | Pretty-print an Object on multiple lines. | | `%o` | Pretty-print an Object all on a single line. | | `%s` | String. | | `%d` | Number (both integer and float). | | `%j` | JSON. Replaced with the string '[Circular]' if the argument contains circular references. | | `%%` | Single percent sign ('%'). This does not consume an argument. | ### Custom formatters You can add custom formatters by extending the `debug.formatters` object. For example, if you wanted to add support for rendering a Buffer as hex with `%h`, you could do something like: ```js const createDebug = require('debug') createDebug.formatters.h = (v) => { return v.toString('hex') } // …elsewhere const debug = createDebug('foo') debug('this is hex: %h', new Buffer('hello world')) // foo this is hex: 68656c6c6f20776f726c6421 +0ms ``` ## Browser Support You can build a browser-ready script using [browserify](https://github.com/substack/node-browserify), or just use the [browserify-as-a-service](https://wzrd.in/) [build](https://wzrd.in/standalone/debug@latest), if you don't want to build it yourself. Debug's enable state is currently persisted by `localStorage`. Consider the situation shown below where you have `worker:a` and `worker:b`, and wish to debug both. You can enable this using `localStorage.debug`: ```js localStorage.debug = 'worker:*' ``` And then refresh the page. ```js a = debug('worker:a'); b = debug('worker:b'); setInterval(function(){ a('doing some work'); }, 1000); setInterval(function(){ b('doing some work'); }, 1200); ``` ## Output streams By default `debug` will log to stderr, however this can be configured per-namespace by overriding the `log` method: Example [_stdout.js_](./examples/node/stdout.js): ```js var debug = require('debug'); var error = debug('app:error'); // by default stderr is used error('goes to stderr!'); var log = debug('app:log'); // set this namespace to log via console.log log.log = console.log.bind(console); // don't forget to bind to console! log('goes to stdout'); error('still goes to stderr!'); // set all output to go via console.info // overrides all per-namespace log settings debug.log = console.info.bind(console); error('now goes to stdout via console.info'); log('still goes to stdout, but via console.info now'); ``` ## Extend You can simply extend debugger ```js const log = require('debug')('auth'); //creates new debug instance with extended namespace const logSign = log.extend('sign'); const logLogin = log.extend('login'); log('hello'); // auth hello logSign('hello'); //auth:sign hello logLogin('hello'); //auth:login hello ``` ## Set dynamically You can also enable debug dynamically by calling the `enable()` method : ```js let debug = require('debug'); console.log(1, debug.enabled('test')); debug.enable('test'); console.log(2, debug.enabled('test')); debug.disable(); console.log(3, debug.enabled('test')); ``` print : ``` 1 false 2 true 3 false ``` Usage : `enable(namespaces)` `namespaces` can include modes separated by a colon and wildcards. Note that calling `enable()` completely overrides previously set DEBUG variable : ``` $ DEBUG=foo node -e 'var dbg = require("debug"); dbg.enable("bar"); console.log(dbg.enabled("foo"))' => false ``` `disable()` Will disable all namespaces. The functions returns the namespaces currently enabled (and skipped). This can be useful if you want to disable debugging temporarily without knowing what was enabled to begin with. For example: ```js let debug = require('debug'); debug.enable('foo:*,-foo:bar'); let namespaces = debug.disable(); debug.enable(namespaces); ``` Note: There is no guarantee that the string will be identical to the initial enable string, but semantically they will be identical. ## Checking whether a debug target is enabled After you've created a debug instance, you can determine whether or not it is enabled by checking the `enabled` property: ```javascript const debug = require('debug')('http'); if (debug.enabled) { // do stuff... } ``` You can also manually toggle this property to force the debug instance to be enabled or disabled. ## Authors - TJ Holowaychuk - Nathan Rajlich - Andrew Rhyne ## Backers Support us with a monthly donation and help us continue our activities. 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Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # pump pump is a small node module that pipes streams together and destroys all of them if one of them closes. ``` npm install pump ``` [](http://travis-ci.org/mafintosh/pump) ## What problem does it solve? When using standard `source.pipe(dest)` source will _not_ be destroyed if dest emits close or an error. You are also not able to provide a callback to tell when then pipe has finished. pump does these two things for you ## Usage Simply pass the streams you want to pipe together to pump and add an optional callback ``` js var pump = require('pump') var fs = require('fs') var source = fs.createReadStream('/dev/random') var dest = fs.createWriteStream('/dev/null') pump(source, dest, function(err) { console.log('pipe finished', err) }) setTimeout(function() { dest.destroy() // when dest is closed pump will destroy source }, 1000) ``` You can use pump to pipe more than two streams together as well ``` js var transform = someTransformStream() pump(source, transform, anotherTransform, dest, function(err) { console.log('pipe finished', err) }) ``` If `source`, `transform`, `anotherTransform` or `dest` closes all of them will be destroyed. Similarly to `stream.pipe()`, `pump()` returns the last stream passed in, so you can do: ``` return pump(s1, s2) // returns s2 ``` If you want to return a stream that combines *both* s1 and s2 to a single stream use [pumpify](https://github.com/mafintosh/pumpify) instead. ## License MIT ## Related `pump` is part of the [mississippi stream utility collection](https://github.com/maxogden/mississippi) which includes more useful stream modules similar to this one. # ieee754 [![travis][travis-image]][travis-url] [![npm][npm-image]][npm-url] [![downloads][downloads-image]][downloads-url] [![javascript style guide][standard-image]][standard-url] [travis-image]: https://img.shields.io/travis/feross/ieee754/master.svg [travis-url]: https://travis-ci.org/feross/ieee754 [npm-image]: https://img.shields.io/npm/v/ieee754.svg [npm-url]: https://npmjs.org/package/ieee754 [downloads-image]: https://img.shields.io/npm/dm/ieee754.svg [downloads-url]: https://npmjs.org/package/ieee754 [standard-image]: https://img.shields.io/badge/code_style-standard-brightgreen.svg [standard-url]: https://standardjs.com [![saucelabs][saucelabs-image]][saucelabs-url] [saucelabs-image]: https://saucelabs.com/browser-matrix/ieee754.svg [saucelabs-url]: https://saucelabs.com/u/ieee754 ### Read/write IEEE754 floating point numbers from/to a Buffer or array-like object. ## install ``` npm install ieee754 ``` ## methods `var ieee754 = require('ieee754')` The `ieee754` object has the following functions: ``` ieee754.read = function (buffer, offset, isLE, mLen, nBytes) ieee754.write = function (buffer, value, offset, isLE, mLen, nBytes) ``` The arguments mean the following: - buffer = the buffer - offset = offset into the buffer - value = value to set (only for `write`) - isLe = is little endian? - mLen = mantissa length - nBytes = number of bytes ## what is ieee754? The IEEE Standard for Floating-Point Arithmetic (IEEE 754) is a technical standard for floating-point computation. [Read more](http://en.wikipedia.org/wiki/IEEE_floating_point). ## license BSD 3 Clause. Copyright (c) 2008, Fair Oaks Labs, Inc. semver(1) -- The semantic versioner for npm =========================================== ## Install ```bash npm install semver ```` ## Usage As a node module: ```js const semver = require('semver') semver.valid('1.2.3') // '1.2.3' semver.valid('a.b.c') // null semver.clean(' =v1.2.3 ') // '1.2.3' semver.satisfies('1.2.3', '1.x || >=2.5.0 || 5.0.0 - 7.2.3') // true semver.gt('1.2.3', '9.8.7') // false semver.lt('1.2.3', '9.8.7') // true semver.minVersion('>=1.0.0') // '1.0.0' semver.valid(semver.coerce('v2')) // '2.0.0' semver.valid(semver.coerce('42.6.7.9.3-alpha')) // '42.6.7' ``` As a command-line utility: ``` $ semver -h A JavaScript implementation of the https://semver.org/ specification Copyright Isaac Z. Schlueter Usage: semver [options] <version> [<version> [...]] Prints valid versions sorted by SemVer precedence Options: -r --range <range> Print versions that match the specified range. -i --increment [<level>] Increment a version by the specified level. Level can be one of: major, minor, patch, premajor, preminor, prepatch, or prerelease. Default level is 'patch'. Only one version may be specified. --preid <identifier> Identifier to be used to prefix premajor, preminor, prepatch or prerelease version increments. -l --loose Interpret versions and ranges loosely -p --include-prerelease Always include prerelease versions in range matching -c --coerce Coerce a string into SemVer if possible (does not imply --loose) --rtl Coerce version strings right to left --ltr Coerce version strings left to right (default) Program exits successfully if any valid version satisfies all supplied ranges, and prints all satisfying versions. If no satisfying versions are found, then exits failure. Versions are printed in ascending order, so supplying multiple versions to the utility will just sort them. ``` ## Versions A "version" is described by the `v2.0.0` specification found at <https://semver.org/>. A leading `"="` or `"v"` character is stripped off and ignored. ## Ranges A `version range` is a set of `comparators` which specify versions that satisfy the range. A `comparator` is composed of an `operator` and a `version`. The set of primitive `operators` is: * `<` Less than * `<=` Less than or equal to * `>` Greater than * `>=` Greater than or equal to * `=` Equal. If no operator is specified, then equality is assumed, so this operator is optional, but MAY be included. For example, the comparator `>=1.2.7` would match the versions `1.2.7`, `1.2.8`, `2.5.3`, and `1.3.9`, but not the versions `1.2.6` or `1.1.0`. Comparators can be joined by whitespace to form a `comparator set`, which is satisfied by the **intersection** of all of the comparators it includes. A range is composed of one or more comparator sets, joined by `||`. A version matches a range if and only if every comparator in at least one of the `||`-separated comparator sets is satisfied by the version. For example, the range `>=1.2.7 <1.3.0` would match the versions `1.2.7`, `1.2.8`, and `1.2.99`, but not the versions `1.2.6`, `1.3.0`, or `1.1.0`. The range `1.2.7 || >=1.2.9 <2.0.0` would match the versions `1.2.7`, `1.2.9`, and `1.4.6`, but not the versions `1.2.8` or `2.0.0`. ### Prerelease Tags If a version has a prerelease tag (for example, `1.2.3-alpha.3`) then it will only be allowed to satisfy comparator sets if at least one comparator with the same `[major, minor, patch]` tuple also has a prerelease tag. For example, the range `>1.2.3-alpha.3` would be allowed to match the version `1.2.3-alpha.7`, but it would *not* be satisfied by `3.4.5-alpha.9`, even though `3.4.5-alpha.9` is technically "greater than" `1.2.3-alpha.3` according to the SemVer sort rules. The version range only accepts prerelease tags on the `1.2.3` version. The version `3.4.5` *would* satisfy the range, because it does not have a prerelease flag, and `3.4.5` is greater than `1.2.3-alpha.7`. The purpose for this behavior is twofold. First, prerelease versions frequently are updated very quickly, and contain many breaking changes that are (by the author's design) not yet fit for public consumption. Therefore, by default, they are excluded from range matching semantics. Second, a user who has opted into using a prerelease version has clearly indicated the intent to use *that specific* set of alpha/beta/rc versions. By including a prerelease tag in the range, the user is indicating that they are aware of the risk. However, it is still not appropriate to assume that they have opted into taking a similar risk on the *next* set of prerelease versions. Note that this behavior can be suppressed (treating all prerelease versions as if they were normal versions, for the purpose of range matching) by setting the `includePrerelease` flag on the options object to any [functions](https://github.com/npm/node-semver#functions) that do range matching. #### Prerelease Identifiers The method `.inc` takes an additional `identifier` string argument that will append the value of the string as a prerelease identifier: ```javascript semver.inc('1.2.3', 'prerelease', 'beta') // '1.2.4-beta.0' ``` command-line example: ```bash $ semver 1.2.3 -i prerelease --preid beta 1.2.4-beta.0 ``` Which then can be used to increment further: ```bash $ semver 1.2.4-beta.0 -i prerelease 1.2.4-beta.1 ``` ### Advanced Range Syntax Advanced range syntax desugars to primitive comparators in deterministic ways. Advanced ranges may be combined in the same way as primitive comparators using white space or `||`. #### Hyphen Ranges `X.Y.Z - A.B.C` Specifies an inclusive set. * `1.2.3 - 2.3.4` := `>=1.2.3 <=2.3.4` If a partial version is provided as the first version in the inclusive range, then the missing pieces are replaced with zeroes. * `1.2 - 2.3.4` := `>=1.2.0 <=2.3.4` If a partial version is provided as the second version in the inclusive range, then all versions that start with the supplied parts of the tuple are accepted, but nothing that would be greater than the provided tuple parts. * `1.2.3 - 2.3` := `>=1.2.3 <2.4.0` * `1.2.3 - 2` := `>=1.2.3 <3.0.0` #### X-Ranges `1.2.x` `1.X` `1.2.*` `*` Any of `X`, `x`, or `*` may be used to "stand in" for one of the numeric values in the `[major, minor, patch]` tuple. * `*` := `>=0.0.0` (Any version satisfies) * `1.x` := `>=1.0.0 <2.0.0` (Matching major version) * `1.2.x` := `>=1.2.0 <1.3.0` (Matching major and minor versions) A partial version range is treated as an X-Range, so the special character is in fact optional. * `""` (empty string) := `*` := `>=0.0.0` * `1` := `1.x.x` := `>=1.0.0 <2.0.0` * `1.2` := `1.2.x` := `>=1.2.0 <1.3.0` #### Tilde Ranges `~1.2.3` `~1.2` `~1` Allows patch-level changes if a minor version is specified on the comparator. Allows minor-level changes if not. * `~1.2.3` := `>=1.2.3 <1.(2+1).0` := `>=1.2.3 <1.3.0` * `~1.2` := `>=1.2.0 <1.(2+1).0` := `>=1.2.0 <1.3.0` (Same as `1.2.x`) * `~1` := `>=1.0.0 <(1+1).0.0` := `>=1.0.0 <2.0.0` (Same as `1.x`) * `~0.2.3` := `>=0.2.3 <0.(2+1).0` := `>=0.2.3 <0.3.0` * `~0.2` := `>=0.2.0 <0.(2+1).0` := `>=0.2.0 <0.3.0` (Same as `0.2.x`) * `~0` := `>=0.0.0 <(0+1).0.0` := `>=0.0.0 <1.0.0` (Same as `0.x`) * `~1.2.3-beta.2` := `>=1.2.3-beta.2 <1.3.0` Note that prereleases in the `1.2.3` version will be allowed, if they are greater than or equal to `beta.2`. So, `1.2.3-beta.4` would be allowed, but `1.2.4-beta.2` would not, because it is a prerelease of a different `[major, minor, patch]` tuple. #### Caret Ranges `^1.2.3` `^0.2.5` `^0.0.4` Allows changes that do not modify the left-most non-zero element in the `[major, minor, patch]` tuple. In other words, this allows patch and minor updates for versions `1.0.0` and above, patch updates for versions `0.X >=0.1.0`, and *no* updates for versions `0.0.X`. Many authors treat a `0.x` version as if the `x` were the major "breaking-change" indicator. Caret ranges are ideal when an author may make breaking changes between `0.2.4` and `0.3.0` releases, which is a common practice. However, it presumes that there will *not* be breaking changes between `0.2.4` and `0.2.5`. It allows for changes that are presumed to be additive (but non-breaking), according to commonly observed practices. * `^1.2.3` := `>=1.2.3 <2.0.0` * `^0.2.3` := `>=0.2.3 <0.3.0` * `^0.0.3` := `>=0.0.3 <0.0.4` * `^1.2.3-beta.2` := `>=1.2.3-beta.2 <2.0.0` Note that prereleases in the `1.2.3` version will be allowed, if they are greater than or equal to `beta.2`. So, `1.2.3-beta.4` would be allowed, but `1.2.4-beta.2` would not, because it is a prerelease of a different `[major, minor, patch]` tuple. * `^0.0.3-beta` := `>=0.0.3-beta <0.0.4` Note that prereleases in the `0.0.3` version *only* will be allowed, if they are greater than or equal to `beta`. So, `0.0.3-pr.2` would be allowed. When parsing caret ranges, a missing `patch` value desugars to the number `0`, but will allow flexibility within that value, even if the major and minor versions are both `0`. * `^1.2.x` := `>=1.2.0 <2.0.0` * `^0.0.x` := `>=0.0.0 <0.1.0` * `^0.0` := `>=0.0.0 <0.1.0` A missing `minor` and `patch` values will desugar to zero, but also allow flexibility within those values, even if the major version is zero. * `^1.x` := `>=1.0.0 <2.0.0` * `^0.x` := `>=0.0.0 <1.0.0` ### Range Grammar Putting all this together, here is a Backus-Naur grammar for ranges, for the benefit of parser authors: ```bnf range-set ::= range ( logical-or range ) * logical-or ::= ( ' ' ) * '||' ( ' ' ) * range ::= hyphen | simple ( ' ' simple ) * | '' hyphen ::= partial ' - ' partial simple ::= primitive | partial | tilde | caret primitive ::= ( '<' | '>' | '>=' | '<=' | '=' ) partial partial ::= xr ( '.' xr ( '.' xr qualifier ? )? )? xr ::= 'x' | 'X' | '*' | nr nr ::= '0' | ['1'-'9'] ( ['0'-'9'] ) * tilde ::= '~' partial caret ::= '^' partial qualifier ::= ( '-' pre )? ( '+' build )? pre ::= parts build ::= parts parts ::= part ( '.' part ) * part ::= nr | [-0-9A-Za-z]+ ``` ## Functions All methods and classes take a final `options` object argument. All options in this object are `false` by default. The options supported are: - `loose` Be more forgiving about not-quite-valid semver strings. (Any resulting output will always be 100% strict compliant, of course.) For backwards compatibility reasons, if the `options` argument is a boolean value instead of an object, it is interpreted to be the `loose` param. - `includePrerelease` Set to suppress the [default behavior](https://github.com/npm/node-semver#prerelease-tags) of excluding prerelease tagged versions from ranges unless they are explicitly opted into. Strict-mode Comparators and Ranges will be strict about the SemVer strings that they parse. * `valid(v)`: Return the parsed version, or null if it's not valid. * `inc(v, release)`: Return the version incremented by the release type (`major`, `premajor`, `minor`, `preminor`, `patch`, `prepatch`, or `prerelease`), or null if it's not valid * `premajor` in one call will bump the version up to the next major version and down to a prerelease of that major version. `preminor`, and `prepatch` work the same way. * If called from a non-prerelease version, the `prerelease` will work the same as `prepatch`. It increments the patch version, then makes a prerelease. If the input version is already a prerelease it simply increments it. * `prerelease(v)`: Returns an array of prerelease components, or null if none exist. Example: `prerelease('1.2.3-alpha.1') -> ['alpha', 1]` * `major(v)`: Return the major version number. * `minor(v)`: Return the minor version number. * `patch(v)`: Return the patch version number. * `intersects(r1, r2, loose)`: Return true if the two supplied ranges or comparators intersect. * `parse(v)`: Attempt to parse a string as a semantic version, returning either a `SemVer` object or `null`. ### Comparison * `gt(v1, v2)`: `v1 > v2` * `gte(v1, v2)`: `v1 >= v2` * `lt(v1, v2)`: `v1 < v2` * `lte(v1, v2)`: `v1 <= v2` * `eq(v1, v2)`: `v1 == v2` This is true if they're logically equivalent, even if they're not the exact same string. You already know how to compare strings. * `neq(v1, v2)`: `v1 != v2` The opposite of `eq`. * `cmp(v1, comparator, v2)`: Pass in a comparison string, and it'll call the corresponding function above. `"==="` and `"!=="` do simple string comparison, but are included for completeness. Throws if an invalid comparison string is provided. * `compare(v1, v2)`: Return `0` if `v1 == v2`, or `1` if `v1` is greater, or `-1` if `v2` is greater. Sorts in ascending order if passed to `Array.sort()`. * `rcompare(v1, v2)`: The reverse of compare. Sorts an array of versions in descending order when passed to `Array.sort()`. * `compareBuild(v1, v2)`: The same as `compare` but considers `build` when two versions are equal. Sorts in ascending order if passed to `Array.sort()`. `v2` is greater. Sorts in ascending order if passed to `Array.sort()`. * `diff(v1, v2)`: Returns difference between two versions by the release type (`major`, `premajor`, `minor`, `preminor`, `patch`, `prepatch`, or `prerelease`), or null if the versions are the same. ### Comparators * `intersects(comparator)`: Return true if the comparators intersect ### Ranges * `validRange(range)`: Return the valid range or null if it's not valid * `satisfies(version, range)`: Return true if the version satisfies the range. * `maxSatisfying(versions, range)`: Return the highest version in the list that satisfies the range, or `null` if none of them do. * `minSatisfying(versions, range)`: Return the lowest version in the list that satisfies the range, or `null` if none of them do. * `minVersion(range)`: Return the lowest version that can possibly match the given range. * `gtr(version, range)`: Return `true` if version is greater than all the versions possible in the range. * `ltr(version, range)`: Return `true` if version is less than all the versions possible in the range. * `outside(version, range, hilo)`: Return true if the version is outside the bounds of the range in either the high or low direction. The `hilo` argument must be either the string `'>'` or `'<'`. (This is the function called by `gtr` and `ltr`.) * `intersects(range)`: Return true if any of the ranges comparators intersect Note that, since ranges may be non-contiguous, a version might not be greater than a range, less than a range, *or* satisfy a range! For example, the range `1.2 <1.2.9 || >2.0.0` would have a hole from `1.2.9` until `2.0.0`, so the version `1.2.10` would not be greater than the range (because `2.0.1` satisfies, which is higher), nor less than the range (since `1.2.8` satisfies, which is lower), and it also does not satisfy the range. If you want to know if a version satisfies or does not satisfy a range, use the `satisfies(version, range)` function. ### Coercion * `coerce(version, options)`: Coerces a string to semver if possible This aims to provide a very forgiving translation of a non-semver string to semver. It looks for the first digit in a string, and consumes all remaining characters which satisfy at least a partial semver (e.g., `1`, `1.2`, `1.2.3`) up to the max permitted length (256 characters). Longer versions are simply truncated (`4.6.3.9.2-alpha2` becomes `4.6.3`). All surrounding text is simply ignored (`v3.4 replaces v3.3.1` becomes `3.4.0`). Only text which lacks digits will fail coercion (`version one` is not valid). The maximum length for any semver component considered for coercion is 16 characters; longer components will be ignored (`10000000000000000.4.7.4` becomes `4.7.4`). The maximum value for any semver component is `Integer.MAX_SAFE_INTEGER || (2**53 - 1)`; higher value components are invalid (`9999999999999999.4.7.4` is likely invalid). If the `options.rtl` flag is set, then `coerce` will return the right-most coercible tuple that does not share an ending index with a longer coercible tuple. For example, `1.2.3.4` will return `2.3.4` in rtl mode, not `4.0.0`. `1.2.3/4` will return `4.0.0`, because the `4` is not a part of any other overlapping SemVer tuple. ### Clean * `clean(version)`: Clean a string to be a valid semver if possible This will return a cleaned and trimmed semver version. If the provided version is not valid a null will be returned. This does not work for ranges. ex. * `s.clean(' = v 2.1.5foo')`: `null` * `s.clean(' = v 2.1.5foo', { loose: true })`: `'2.1.5-foo'` * `s.clean(' = v 2.1.5-foo')`: `null` * `s.clean(' = v 2.1.5-foo', { loose: true })`: `'2.1.5-foo'` * `s.clean('=v2.1.5')`: `'2.1.5'` * `s.clean(' =v2.1.5')`: `2.1.5` * `s.clean(' 2.1.5 ')`: `'2.1.5'` * `s.clean('~1.0.0')`: `null` Browser-friendly inheritance fully compatible with standard node.js [inherits](http://nodejs.org/api/util.html#util_util_inherits_constructor_superconstructor). This package exports standard `inherits` from node.js `util` module in node environment, but also provides alternative browser-friendly implementation through [browser field](https://gist.github.com/shtylman/4339901). Alternative implementation is a literal copy of standard one located in standalone module to avoid requiring of `util`. It also has a shim for old browsers with no `Object.create` support. While keeping you sure you are using standard `inherits` implementation in node.js environment, it allows bundlers such as [browserify](https://github.com/substack/node-browserify) to not include full `util` package to your client code if all you need is just `inherits` function. It worth, because browser shim for `util` package is large and `inherits` is often the single function you need from it. It's recommended to use this package instead of `require('util').inherits` for any code that has chances to be used not only in node.js but in browser too. ## usage ```js var inherits = require('inherits'); // then use exactly as the standard one ``` ## note on version ~1.0 Version ~1.0 had completely different motivation and is not compatible neither with 2.0 nor with standard node.js `inherits`. If you are using version ~1.0 and planning to switch to ~2.0, be careful: * new version uses `super_` instead of `super` for referencing superclass * new version overwrites current prototype while old one preserves any existing fields on it # near-ledger-js A JavaScript library for communication with [Ledger](https://www.ledger.com/) Hardware Wallet. # Example usage ```javascript import { createClient, getSupportedTransport } from "near-ledger-js"; const transport = await getSupportedTransport(); transport.setScrambleKey("NEAR"); transport.on('disconnect', () => {...}); ``` In an onClick handler: ```javascript const client = await createClient(transport); // If no error thrown, ledger is available. NOTE: U2F transport will still get here even if device is not present ``` To see debug logging for `getSupportedTransport()`, import `setDebugLogging()` and call `setDebugLogging(true)` before using the package. # How to run demo project 1. `yarn` to install dependencies 2. `yarn start` to start local server with Parcel 3. Open https://localhost:1234 in your browser 4. Open browser console 5. Try examples shown on the page # License This repository is distributed under the terms of both the MIT license and the Apache License (Version 2.0). See [LICENSE](LICENSE) and [LICENSE-APACHE](LICENSE-APACHE) for details. iMurmurHash.js ============== An incremental implementation of the MurmurHash3 (32-bit) hashing algorithm for JavaScript based on [Gary Court's implementation](https://github.com/garycourt/murmurhash-js) with [kazuyukitanimura's modifications](https://github.com/kazuyukitanimura/murmurhash-js). This version works significantly faster than the non-incremental version if you need to hash many small strings into a single hash, since string concatenation (to build the single string to pass the non-incremental version) is fairly costly. In one case tested, using the incremental version was about 50% faster than concatenating 5-10 strings and then hashing. Installation ------------ To use iMurmurHash in the browser, [download the latest version](https://raw.github.com/jensyt/imurmurhash-js/master/imurmurhash.min.js) and include it as a script on your site. ```html <script type="text/javascript" src="/scripts/imurmurhash.min.js"></script> <script> // Your code here, access iMurmurHash using the global object MurmurHash3 </script> ``` --- To use iMurmurHash in Node.js, install the module using NPM: ```bash npm install imurmurhash ``` Then simply include it in your scripts: ```javascript MurmurHash3 = require('imurmurhash'); ``` Quick Example ------------- ```javascript // Create the initial hash var hashState = MurmurHash3('string'); // Incrementally add text hashState.hash('more strings'); hashState.hash('even more strings'); // All calls can be chained if desired hashState.hash('and').hash('some').hash('more'); // Get a result hashState.result(); // returns 0xe4ccfe6b ``` Functions --------- ### MurmurHash3 ([string], [seed]) Get a hash state object, optionally initialized with the given _string_ and _seed_. _Seed_ must be a positive integer if provided. Calling this function without the `new` keyword will return a cached state object that has been reset. This is safe to use as long as the object is only used from a single thread and no other hashes are created while operating on this one. If this constraint cannot be met, you can use `new` to create a new state object. For example: ```javascript // Use the cached object, calling the function again will return the same // object (but reset, so the current state would be lost) hashState = MurmurHash3(); ... // Create a new object that can be safely used however you wish. Calling the // function again will simply return a new state object, and no state loss // will occur, at the cost of creating more objects. hashState = new MurmurHash3(); ``` Both methods can be mixed however you like if you have different use cases. --- ### MurmurHash3.prototype.hash (string) Incrementally add _string_ to the hash. This can be called as many times as you want for the hash state object, including after a call to `result()`. Returns `this` so calls can be chained. --- ### MurmurHash3.prototype.result () Get the result of the hash as a 32-bit positive integer. This performs the tail and finalizer portions of the algorithm, but does not store the result in the state object. This means that it is perfectly safe to get results and then continue adding strings via `hash`. ```javascript // Do the whole string at once MurmurHash3('this is a test string').result(); // 0x70529328 // Do part of the string, get a result, then the other part var m = MurmurHash3('this is a'); m.result(); // 0xbfc4f834 m.hash(' test string').result(); // 0x70529328 (same as above) ``` --- ### MurmurHash3.prototype.reset ([seed]) Reset the state object for reuse, optionally using the given _seed_ (defaults to 0 like the constructor). Returns `this` so calls can be chained. --- License (MIT) ------------- Copyright (c) 2013 Gary Court, Jens Taylor Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # string_decoder ***Node-core v8.9.4 string_decoder for userland*** [](https://nodei.co/npm/string_decoder/) [](https://nodei.co/npm/string_decoder/) ```bash npm install --save string_decoder ``` ***Node-core string_decoder for userland*** This package is a mirror of the string_decoder implementation in Node-core. Full documentation may be found on the [Node.js website](https://nodejs.org/dist/v8.9.4/docs/api/). As of version 1.0.0 **string_decoder** uses semantic versioning. ## Previous versions Previous version numbers match the versions found in Node core, e.g. 0.10.24 matches Node 0.10.24, likewise 0.11.10 matches Node 0.11.10. ## Update The *build/* directory contains a build script that will scrape the source from the [nodejs/node](https://github.com/nodejs/node) repo given a specific Node version. ## Streams Working Group `string_decoder` is maintained by the Streams Working Group, which oversees the development and maintenance of the Streams API within Node.js. The responsibilities of the Streams Working Group include: * Addressing stream issues on the Node.js issue tracker. * Authoring and editing stream documentation within the Node.js project. * Reviewing changes to stream subclasses within the Node.js project. * Redirecting changes to streams from the Node.js project to this project. * Assisting in the implementation of stream providers within Node.js. * Recommending versions of `readable-stream` to be included in Node.js. * Messaging about the future of streams to give the community advance notice of changes. See [readable-stream](https://github.com/nodejs/readable-stream) for more details. # debug [](https://travis-ci.org/visionmedia/debug) [](https://coveralls.io/github/visionmedia/debug?branch=master) [](https://visionmedia-community-slackin.now.sh/) [](#backers) [](#sponsors) <img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png"> A tiny JavaScript debugging utility modelled after Node.js core's debugging technique. Works in Node.js and web browsers. ## Installation ```bash $ npm install debug ``` ## Usage `debug` exposes a function; simply pass this function the name of your module, and it will return a decorated version of `console.error` for you to pass debug statements to. This will allow you to toggle the debug output for different parts of your module as well as the module as a whole. Example [_app.js_](./examples/node/app.js): ```js var debug = require('debug')('http') , http = require('http') , name = 'My App'; // fake app debug('booting %o', name); http.createServer(function(req, res){ debug(req.method + ' ' + req.url); res.end('hello\n'); }).listen(3000, function(){ debug('listening'); }); // fake worker of some kind require('./worker'); ``` Example [_worker.js_](./examples/node/worker.js): ```js var a = require('debug')('worker:a') , b = require('debug')('worker:b'); function work() { a('doing lots of uninteresting work'); setTimeout(work, Math.random() * 1000); } work(); function workb() { b('doing some work'); setTimeout(workb, Math.random() * 2000); } workb(); ``` The `DEBUG` environment variable is then used to enable these based on space or comma-delimited names. Here are some examples: <img width="647" alt="screen shot 2017-08-08 at 12 53 04 pm" src="https://user-images.githubusercontent.com/71256/29091703-a6302cdc-7c38-11e7-8304-7c0b3bc600cd.png"> <img width="647" alt="screen shot 2017-08-08 at 12 53 38 pm" src="https://user-images.githubusercontent.com/71256/29091700-a62a6888-7c38-11e7-800b-db911291ca2b.png"> <img width="647" alt="screen shot 2017-08-08 at 12 53 25 pm" src="https://user-images.githubusercontent.com/71256/29091701-a62ea114-7c38-11e7-826a-2692bedca740.png"> #### Windows note On Windows the environment variable is set using the `set` command. ```cmd set DEBUG=*,-not_this ``` Note that PowerShell uses different syntax to set environment variables. ```cmd $env:DEBUG = "*,-not_this" ``` Then, run the program to be debugged as usual. ## Namespace Colors Every debug instance has a color generated for it based on its namespace name. This helps when visually parsing the debug output to identify which debug instance a debug line belongs to. #### Node.js In Node.js, colors are enabled when stderr is a TTY. You also _should_ install the [`supports-color`](https://npmjs.org/supports-color) module alongside debug, otherwise debug will only use a small handful of basic colors. <img width="521" src="https://user-images.githubusercontent.com/71256/29092181-47f6a9e6-7c3a-11e7-9a14-1928d8a711cd.png"> #### Web Browser Colors are also enabled on "Web Inspectors" that understand the `%c` formatting option. These are WebKit web inspectors, Firefox ([since version 31](https://hacks.mozilla.org/2014/05/editable-box-model-multiple-selection-sublime-text-keys-much-more-firefox-developer-tools-episode-31/)) and the Firebug plugin for Firefox (any version). <img width="524" src="https://user-images.githubusercontent.com/71256/29092033-b65f9f2e-7c39-11e7-8e32-f6f0d8e865c1.png"> ## Millisecond diff When actively developing an application it can be useful to see when the time spent between one `debug()` call and the next. Suppose for example you invoke `debug()` before requesting a resource, and after as well, the "+NNNms" will show you how much time was spent between calls. <img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png"> When stdout is not a TTY, `Date#toISOString()` is used, making it more useful for logging the debug information as shown below: <img width="647" src="https://user-images.githubusercontent.com/71256/29091956-6bd78372-7c39-11e7-8c55-c948396d6edd.png"> ## Conventions If you're using this in one or more of your libraries, you _should_ use the name of your library so that developers may toggle debugging as desired without guessing names. If you have more than one debuggers you _should_ prefix them with your library name and use ":" to separate features. For example "bodyParser" from Connect would then be "connect:bodyParser". If you append a "*" to the end of your name, it will always be enabled regardless of the setting of the DEBUG environment variable. You can then use it for normal output as well as debug output. ## Wildcards The `*` character may be used as a wildcard. Suppose for example your library has debuggers named "connect:bodyParser", "connect:compress", "connect:session", instead of listing all three with `DEBUG=connect:bodyParser,connect:compress,connect:session`, you may simply do `DEBUG=connect:*`, or to run everything using this module simply use `DEBUG=*`. You can also exclude specific debuggers by prefixing them with a "-" character. For example, `DEBUG=*,-connect:*` would include all debuggers except those starting with "connect:". ## Environment Variables When running through Node.js, you can set a few environment variables that will change the behavior of the debug logging: | Name | Purpose | |-----------|-------------------------------------------------| | `DEBUG` | Enables/disables specific debugging namespaces. | | `DEBUG_HIDE_DATE` | Hide date from debug output (non-TTY). | | `DEBUG_COLORS`| Whether or not to use colors in the debug output. | | `DEBUG_DEPTH` | Object inspection depth. | | `DEBUG_SHOW_HIDDEN` | Shows hidden properties on inspected objects. | __Note:__ The environment variables beginning with `DEBUG_` end up being converted into an Options object that gets used with `%o`/`%O` formatters. See the Node.js documentation for [`util.inspect()`](https://nodejs.org/api/util.html#util_util_inspect_object_options) for the complete list. ## Formatters Debug uses [printf-style](https://wikipedia.org/wiki/Printf_format_string) formatting. Below are the officially supported formatters: | Formatter | Representation | |-----------|----------------| | `%O` | Pretty-print an Object on multiple lines. | | `%o` | Pretty-print an Object all on a single line. | | `%s` | String. | | `%d` | Number (both integer and float). | | `%j` | JSON. Replaced with the string '[Circular]' if the argument contains circular references. | | `%%` | Single percent sign ('%'). This does not consume an argument. | ### Custom formatters You can add custom formatters by extending the `debug.formatters` object. For example, if you wanted to add support for rendering a Buffer as hex with `%h`, you could do something like: ```js const createDebug = require('debug') createDebug.formatters.h = (v) => { return v.toString('hex') } // …elsewhere const debug = createDebug('foo') debug('this is hex: %h', new Buffer('hello world')) // foo this is hex: 68656c6c6f20776f726c6421 +0ms ``` ## Browser Support You can build a browser-ready script using [browserify](https://github.com/substack/node-browserify), or just use the [browserify-as-a-service](https://wzrd.in/) [build](https://wzrd.in/standalone/debug@latest), if you don't want to build it yourself. Debug's enable state is currently persisted by `localStorage`. Consider the situation shown below where you have `worker:a` and `worker:b`, and wish to debug both. You can enable this using `localStorage.debug`: ```js localStorage.debug = 'worker:*' ``` And then refresh the page. ```js a = debug('worker:a'); b = debug('worker:b'); setInterval(function(){ a('doing some work'); }, 1000); setInterval(function(){ b('doing some work'); }, 1200); ``` ## Output streams By default `debug` will log to stderr, however this can be configured per-namespace by overriding the `log` method: Example [_stdout.js_](./examples/node/stdout.js): ```js var debug = require('debug'); var error = debug('app:error'); // by default stderr is used error('goes to stderr!'); var log = debug('app:log'); // set this namespace to log via console.log log.log = console.log.bind(console); // don't forget to bind to console! log('goes to stdout'); error('still goes to stderr!'); // set all output to go via console.info // overrides all per-namespace log settings debug.log = console.info.bind(console); error('now goes to stdout via console.info'); log('still goes to stdout, but via console.info now'); ``` ## Checking whether a debug target is enabled After you've created a debug instance, you can determine whether or not it is enabled by checking the `enabled` property: ```javascript const debug = require('debug')('http'); if (debug.enabled) { // do stuff... } ``` You can also manually toggle this property to force the debug instance to be enabled or disabled. ## Authors - TJ Holowaychuk - Nathan Rajlich - Andrew Rhyne ## Backers Support us with a monthly donation and help us continue our activities. 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Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Compiler frontend for node.js ============================= Usage ----- For an up to date list of available command line options, see: ``` $> asc --help ``` API --- The API accepts the same options as the CLI but also lets you override stdout and stderr and/or provide a callback. Example: ```js const asc = require("assemblyscript/cli/asc"); asc.ready.then(() => { asc.main([ "myModule.ts", "--binaryFile", "myModule.wasm", "--optimize", "--sourceMap", "--measure" ], { stdout: process.stdout, stderr: process.stderr }, function(err) { if (err) throw err; ... }); }); ``` Available command line options can also be obtained programmatically: ```js const options = require("assemblyscript/cli/asc.json"); ... ``` You can also compile a source string directly, for example in a browser environment: ```js const asc = require("assemblyscript/cli/asc"); asc.ready.then(() => { const { binary, text, stdout, stderr } = asc.compileString(`...`, { optimize: 2 }); }); ... ``` # capability.js - javascript environment capability detection [](https://travis-ci.org/inf3rno/capability) The capability.js library provides capability detection for different javascript environments. ## Documentation This project is empty yet. ### Installation ```bash npm install capability ``` ```bash bower install capability ``` #### Environment compatibility The lib requires only basic javascript features, so it will run in every js environments. #### Requirements If you want to use the lib in browser, you'll need a node module loader, e.g. browserify, webpack, etc... #### Usage In this documentation I used the lib as follows: ```js var capability = require("capability"); ``` ### Capabilities API #### Defining a capability You can define a capability by using the `define(name, test)` function. ```js capability.define("Object.create", function () { return Object.create; }); ``` The `name` parameter should contain the identifier of the capability and the `test` parameter should contain a function, which can detect the capability. If the capability is supported by the environment, then the `test()` should return `true`, otherwise it should return `false`. You don't have to convert the return value into a `Boolean`, the library will do that for you, so you won't have memory leaks because of this. #### Testing a capability The `test(name)` function will return a `Boolean` about whether the capability is supported by the actual environment. ```js console.log(capability.test("Object.create")); // true - in recent environments // false - by pre ES5 environments without Object.create ``` You can use `capability(name)` instead of `capability.test(name)` if you want a short code by optional requirements. #### Checking a capability The `check(name)` function will throw an Error when the capability is not supported by the actual environment. ```js capability.check("Object.create"); // this will throw an Error by pre ES5 environments without Object.create ``` #### Checking capability with require and modules It is possible to check the environments with `require()` by adding a module, which calls the `check(name)` function. By the capability definitions in this lib I added such modules by each definition, so you can do for example `require("capability/es5")`. Ofc. you can do fun stuff if you want, e.g. you can call multiple `check`s from a single `requirements.js` file in your lib, etc... ### Definitions Currently the following definitions are supported by the lib: - strict mode - `arguments.callee.caller` - es5 - `Array.prototype.forEach` - `Array.prototype.map` - `Function.prototype.bind` - `Object.create` - `Object.defineProperties` - `Object.defineProperty` - `Object.prototype.hasOwnProperty` - `Error.captureStackTrace` - `Error.prototype.stack` ## License MIT - 2016 Jánszky László Lajos # hasurl [![NPM Version][npm-image]][npm-url] [![Build Status][travis-image]][travis-url] > Determine whether Node.js' native [WHATWG `URL`](https://nodejs.org/api/url.html#url_the_whatwg_url_api) implementation is available. ## Installation [Node.js](http://nodejs.org/) `>= 4` is required. To install, type this at the command line: ```shell npm install hasurl ``` ## Usage ```js const hasURL = require('hasurl'); if (hasURL()) { // supported } else { // fallback } ``` [npm-image]: https://img.shields.io/npm/v/hasurl.svg [npm-url]: https://npmjs.org/package/hasurl [travis-image]: https://img.shields.io/travis/stevenvachon/hasurl.svg [travis-url]: https://travis-ci.org/stevenvachon/hasurl # ansi-colors [](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W8YFZ425KND68) [](https://www.npmjs.com/package/ansi-colors) [](https://npmjs.org/package/ansi-colors) [](https://npmjs.org/package/ansi-colors) [](https://travis-ci.org/doowb/ansi-colors) > Easily add ANSI colors to your text and symbols in the terminal. A faster drop-in replacement for chalk, kleur and turbocolor (without the dependencies and rendering bugs). Please consider following this project's author, [Brian Woodward](https://github.com/doowb), and consider starring the project to show your :heart: and support. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save ansi-colors ```  ## Why use this? ansi-colors is _the fastest Node.js library for terminal styling_. A more performant drop-in replacement for chalk, with no dependencies. * _Blazing fast_ - Fastest terminal styling library in node.js, 10-20x faster than chalk! * _Drop-in replacement_ for [chalk](https://github.com/chalk/chalk). * _No dependencies_ (Chalk has 7 dependencies in its tree!) * _Safe_ - Does not modify the `String.prototype` like [colors](https://github.com/Marak/colors.js). * Supports [nested colors](#nested-colors), **and does not have the [nested styling bug](#nested-styling-bug) that is present in [colorette](https://github.com/jorgebucaran/colorette), [chalk](https://github.com/chalk/chalk), and [kleur](https://github.com/lukeed/kleur)**. * Supports [chained colors](#chained-colors). * [Toggle color support](#toggle-color-support) on or off. ## Usage ```js const c = require('ansi-colors'); console.log(c.red('This is a red string!')); console.log(c.green('This is a red string!')); console.log(c.cyan('This is a cyan string!')); console.log(c.yellow('This is a yellow string!')); ```  ## Chained colors ```js console.log(c.bold.red('this is a bold red message')); console.log(c.bold.yellow.italic('this is a bold yellow italicized message')); console.log(c.green.bold.underline('this is a bold green underlined message')); ```  ## Nested colors ```js console.log(c.yellow(`foo ${c.red.bold('red')} bar ${c.cyan('cyan')} baz`)); ```  ### Nested styling bug `ansi-colors` does not have the nested styling bug found in [colorette](https://github.com/jorgebucaran/colorette), [chalk](https://github.com/chalk/chalk), and [kleur](https://github.com/lukeed/kleur). ```js const { bold, red } = require('ansi-styles'); console.log(bold(`foo ${red.dim('bar')} baz`)); const colorette = require('colorette'); console.log(colorette.bold(`foo ${colorette.red(colorette.dim('bar'))} baz`)); const kleur = require('kleur'); console.log(kleur.bold(`foo ${kleur.red.dim('bar')} baz`)); const chalk = require('chalk'); console.log(chalk.bold(`foo ${chalk.red.dim('bar')} baz`)); ``` **Results in the following** (sans icons and labels)  ## Toggle color support Easily enable/disable colors. ```js const c = require('ansi-colors'); // disable colors manually c.enabled = false; // or use a library to automatically detect support c.enabled = require('color-support').hasBasic; console.log(c.red('I will only be colored red if the terminal supports colors')); ``` ## Strip ANSI codes Use the `.unstyle` method to strip ANSI codes from a string. ```js console.log(c.unstyle(c.blue.bold('foo bar baz'))); //=> 'foo bar baz' ``` ## Available styles **Note** that bright and bright-background colors are not always supported. | Colors | Background Colors | Bright Colors | Bright Background Colors | | ------- | ----------------- | ------------- | ------------------------ | | black | bgBlack | blackBright | bgBlackBright | | red | bgRed | redBright | bgRedBright | | green | bgGreen | greenBright | bgGreenBright | | yellow | bgYellow | yellowBright | bgYellowBright | | blue | bgBlue | blueBright | bgBlueBright | | magenta | bgMagenta | magentaBright | bgMagentaBright | | cyan | bgCyan | cyanBright | bgCyanBright | | white | bgWhite | whiteBright | bgWhiteBright | | gray | | | | | grey | | | | _(`gray` is the U.S. spelling, `grey` is more commonly used in the Canada and U.K.)_ ### Style modifiers * dim * **bold** * hidden * _italic_ * underline * inverse * ~~strikethrough~~ * reset ## Aliases Create custom aliases for styles. ```js const colors = require('ansi-colors'); colors.alias('primary', colors.yellow); colors.alias('secondary', colors.bold); console.log(colors.primary.secondary('Foo')); ``` ## Themes A theme is an object of custom aliases. ```js const colors = require('ansi-colors'); colors.theme({ danger: colors.red, dark: colors.dim.gray, disabled: colors.gray, em: colors.italic, heading: colors.bold.underline, info: colors.cyan, muted: colors.dim, primary: colors.blue, strong: colors.bold, success: colors.green, underline: colors.underline, warning: colors.yellow }); // Now, we can use our custom styles alongside the built-in styles! console.log(colors.danger.strong.em('Error!')); console.log(colors.warning('Heads up!')); console.log(colors.info('Did you know...')); console.log(colors.success.bold('It worked!')); ``` ## Performance **Libraries tested** * ansi-colors v3.0.4 * chalk v2.4.1 ### Mac > MacBook Pro, Intel Core i7, 2.3 GHz, 16 GB. **Load time** Time it takes to load the first time `require()` is called: * ansi-colors - `1.915ms` * chalk - `12.437ms` **Benchmarks** ``` # All Colors ansi-colors x 173,851 ops/sec ±0.42% (91 runs sampled) chalk x 9,944 ops/sec ±2.53% (81 runs sampled))) # Chained colors ansi-colors x 20,791 ops/sec ±0.60% (88 runs sampled) chalk x 2,111 ops/sec ±2.34% (83 runs sampled) # Nested colors ansi-colors x 59,304 ops/sec ±0.98% (92 runs sampled) chalk x 4,590 ops/sec ±2.08% (82 runs sampled) ``` ### Windows > Windows 10, Intel Core i7-7700k CPU @ 4.2 GHz, 32 GB **Load time** Time it takes to load the first time `require()` is called: * ansi-colors - `1.494ms` * chalk - `11.523ms` **Benchmarks** ``` # All Colors ansi-colors x 193,088 ops/sec ±0.51% (95 runs sampled)) chalk x 9,612 ops/sec ±3.31% (77 runs sampled))) # Chained colors ansi-colors x 26,093 ops/sec ±1.13% (94 runs sampled) chalk x 2,267 ops/sec ±2.88% (80 runs sampled)) # Nested colors ansi-colors x 67,747 ops/sec ±0.49% (93 runs sampled) chalk x 4,446 ops/sec ±3.01% (82 runs sampled)) ``` ## About <details> <summary><strong>Contributing</strong></summary> Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). </details> <details> <summary><strong>Running Tests</strong></summary> Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` </details> <details> <summary><strong>Building docs</strong></summary> _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` </details> ### Related projects You might also be interested in these projects: * [ansi-wrap](https://www.npmjs.com/package/ansi-wrap): Create ansi colors by passing the open and close codes. | [homepage](https://github.com/jonschlinkert/ansi-wrap "Create ansi colors by passing the open and close codes.") * [strip-color](https://www.npmjs.com/package/strip-color): Strip ANSI color codes from a string. No dependencies. | [homepage](https://github.com/jonschlinkert/strip-color "Strip ANSI color codes from a string. No dependencies.") ### Contributors | **Commits** | **Contributor** | | --- | --- | | 48 | [jonschlinkert](https://github.com/jonschlinkert) | | 42 | [doowb](https://github.com/doowb) | | 6 | [lukeed](https://github.com/lukeed) | | 2 | [Silic0nS0ldier](https://github.com/Silic0nS0ldier) | | 1 | [dwieeb](https://github.com/dwieeb) | | 1 | [jorgebucaran](https://github.com/jorgebucaran) | | 1 | [madhavarshney](https://github.com/madhavarshney) | | 1 | [chapterjason](https://github.com/chapterjason) | ### Author **Brian Woodward** * [GitHub Profile](https://github.com/doowb) * [Twitter Profile](https://twitter.com/doowb) * [LinkedIn Profile](https://linkedin.com/in/woodwardbrian) ### License Copyright © 2019, [Brian Woodward](https://github.com/doowb). Released under the [MIT License](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.8.0, on July 01, 2019._ # `asbuild` [](https://github.com/AssemblyScript/asbuild/stargazers) *A simple build tool for [AssemblyScript](https://assemblyscript.org) projects, similar to `cargo`, etc.* ## 🚩 Table of Contents - [Installing](#-installing) - [Usage](#-usage) - [`asb init`](#asb-init---create-an-empty-project) - [`asb test`](#asb-test---run-as-pect-tests) - [`asb fmt`](#asb-fmt---format-as-files-using-eslint) - [`asb run`](#asb-run---run-a-wasi-binary) - [`asb build`](#asb-build---compile-the-project-using-asc) - [Background](#-background) ## 🔧 Installing Install it globally ``` npm install -g asbuild ``` Or, locally as dev dependencies ``` npm install --save-dev asbuild ``` ## 💡 Usage ``` Build tool for AssemblyScript projects. Usage: asb [command] [options] Commands: asb Alias of build command, to maintain back-ward compatibility [default] asb build Compile a local package and all of its dependencies [aliases: compile, make] asb init [baseDir] Create a new AS package in an given directory asb test Run as-pect tests asb fmt [paths..] This utility formats current module using eslint. [aliases: format, lint] Options: --version Show version number [boolean] --help Show help [boolean] ``` ### `asb init` - Create an empty project ``` asb init [baseDir] Create a new AS package in an given directory Positionals: baseDir Create a sample AS project in this directory [string] [default: "."] Options: --version Show version number [boolean] --help Show help [boolean] --yes Skip the interactive prompt [boolean] [default: false] ``` ### `asb test` - Run as-pect tests ``` asb test Run as-pect tests USAGE: asb test [options] -- [aspect_options] Options: --version Show version number [boolean] --help Show help [boolean] --verbose, --vv Print out arguments passed to as-pect [boolean] [default: false] ``` ### `asb fmt` - Format AS files using ESlint ``` asb fmt [paths..] This utility formats current module using eslint. Positionals: paths Paths to format [array] [default: ["."]] Initialisation: --init Generates recommended eslint config for AS Projects [boolean] Miscellaneous --lint, --dry-run Tries to fix problems without saving the changes to the file system [boolean] [default: false] Options: --version Show version number [boolean] --help Show help ``` ### `asb run` - Run a WASI binary ``` asb run Run a WASI binary USAGE: asb run [options] [binary path] -- [binary options] Positionals: binary path to Wasm binary [string] [required] Options: --version Show version number [boolean] --help Show help [boolean] --preopen, -p comma separated list of directories to open. [default: "."] ``` ### `asb build` - Compile the project using asc ``` asb build Compile a local package and all of its dependencies USAGE: asb build [entry_file] [options] -- [asc_options] Options: --version Show version number [boolean] --help Show help [boolean] --baseDir, -d Base directory of project. [string] [default: "."] --config, -c Path to asconfig file [string] [default: "./asconfig.json"] --wat Output wat file to outDir [boolean] [default: false] --outDir Directory to place built binaries. Default "./build/<target>/" [string] --target Target for compilation [string] [default: "release"] --verbose Print out arguments passed to asc [boolean] [default: false] Examples: asb build Build release of 'assembly/index.ts to build/release/packageName.wasm asb build --target release Build a release binary asb build -- --measure Pass argument to 'asc' ``` #### Defaults ##### Project structure ``` project/ package.json asconfig.json assembly/ index.ts build/ release/ project.wasm debug/ project.wasm ``` - If no entry file passed and no `entry` field is in `asconfig.json`, `project/assembly/index.ts` is assumed. - `asconfig.json` allows for options for different compile targets, e.g. release, debug, etc. `asc` defaults to the release target. - The default build directory is `./build`, and artifacts are placed at `./build/<target>/packageName.wasm`. ##### Workspaces If a `workspace` field is added to a top level `asconfig.json` file, then each path in the array is built and placed into the top level `outDir`. For example, `asconfig.json`: ```json { "workspaces": ["a", "b"] } ``` Running `asb` in the directory below will use the top level build directory to place all the binaries. ``` project/ package.json asconfig.json a/ asconfig.json assembly/ index.ts b/ asconfig.json assembly/ index.ts build/ release/ a.wasm b.wasm debug/ a.wasm b.wasm ``` To see an example in action check out the [test workspace](./tests/build_test) ## 📖 Background Asbuild started as wrapper around `asc` to provide an easier CLI interface and now has been extened to support other commands like `init`, `test` and `fmt` just like `cargo` to become a one stop build tool for AS Projects. ## 📜 License This library is provided under the open-source [MIT license](https://choosealicense.com/licenses/mit/). # Ozone - Javascript Class Framework [](https://travis-ci.org/inf3rno/o3) The Ozone class framework contains enhanced class support to ease the development of object-oriented javascript applications in an ES5 environment. Another alternative to get a better class support to use ES6 classes and compilers like Babel, Traceur or TypeScript until native ES6 support arrives. ## Documentation ### Installation ```bash npm install o3 ``` ```bash bower install o3 ``` #### Environment compatibility The framework succeeded the tests on - node v4.2 and v5.x - chrome 51.0 - firefox 47.0 and 48.0 - internet explorer 11.0 - phantomjs 2.1 by the usage of npm scripts under win7 x64. I wasn't able to test the framework by Opera since the Karma launcher is buggy, so I decided not to support Opera. I used [Yadda](https://github.com/acuminous/yadda) to write BDD tests. I used [Karma](https://github.com/karma-runner/karma) with [Browserify](https://github.com/substack/node-browserify) to test the framework in browsers. On pre-ES5 environments there will be bugs in the Class module due to pre-ES5 enumeration and the lack of some ES5 methods, so pre-ES5 environments are not supported. #### Requirements An ES5 capable environment is required with - `Object.create` - ES5 compatible property enumeration: `Object.defineProperty`, `Object.getOwnPropertyDescriptor`, `Object.prototype.hasOwnProperty`, etc. - `Array.prototype.forEach` #### Usage In this documentation I used the framework as follows: ```js var o3 = require("o3"), Class = o3.Class; ``` ### Inheritance #### Inheriting from native classes (from the Error class in these examples) You can extend native classes by calling the Class() function. ```js var UserError = Class(Error, { prototype: { message: "blah", constructor: function UserError() { Error.captureStackTrace(this, this.constructor); } } }); ``` An alternative to call Class.extend() with the Ancestor as the context. The Class() function uses this in the background. ```js var UserError = Class.extend.call(Error, { prototype: { message: "blah", constructor: function UserError() { Error.captureStackTrace(this, this.constructor); } } }); ``` #### Inheriting from custom classes You can use Class.extend() by any other class, not just by native classes. ```js var Ancestor = Class(Object, { prototype: { a: 1, b: 2 } }); var Descendant = Class.extend.call(Ancestor, { prototype: { c: 3 } }); ``` Or you can simply add it as a static method, so you don't have to pass context any time you want to use it. The only drawback, that this static method will be inherited as well. ```js var Ancestor = Class(Object, { extend: Class.extend, prototype: { a: 1, b: 2 } }); var Descendant = Ancestor.extend({ prototype: { c: 3 } }); ``` #### Inheriting from the Class class You can inherit the extend() method and other utility methods from the Class class. Probably this is the simplest solution if you need the Class API and you don't need to inherit from special native classes like Error. ```js var Ancestor = Class.extend({ prototype: { a: 1, b: 2 } }); var Descendant = Ancestor.extend({ prototype: { c: 3 } }); ``` #### Inheritance with clone and merge The static extend() method uses the clone() and merge() utility methods to inherit from the ancestor and add properties from the config. ```js var MyClass = Class.clone.call(Object, function MyClass(){ // ... }); Class.merge.call(MyClass, { prototype: { x: 1, y: 2 } }); ``` Or with utility methods. ```js var MyClass = Class.clone(function MyClass() { // ... }).merge({ prototype: { x: 1, y: 2 } }); ``` #### Inheritance with clone and absorb You can fill in missing properties with the usage of absorb. ```js var MyClass = Class(SomeAncestor, {...}); Class.absorb.call(MyClass, Class); MyClass.merge({...}); ``` For example if you don't have Class methods and your class already has an ancestor, then you can use absorb() to add Class methods. #### Abstract classes Using abstract classes with instantiation verification won't be implemented in this lib, however we provide an `abstractMethod`, which you can put to not implemented parts of your abstract class. ```js var AbstractA = Class({ prototype: { doA: function (){ // ... var b = this.getB(); // ... // do something with b // ... }, getB: abstractMethod } }); var AB1 = Class(AbstractA, { prototype: { getB: function (){ return new B1(); } } }); var ab1 = new AB1(); ``` I strongly support the composition over inheritance principle and I think you should use dependency injection instead of abstract classes. ```js var A = Class({ prototype: { init: function (b){ this.b = b; }, doA: function (){ // ... // do something with this.b // ... } } }); var b = new B1(); var ab1 = new A(b); ``` ### Constructors #### Using a custom constructor You can pass your custom constructor as a config option by creating the class. ```js var MyClass = Class(Object, { prototype: { constructor: function () { // ... } } }); ``` #### Using a custom factory to create the constructor Or you can pass a static factory method to create your custom constructor. ```js var MyClass = Class(Object, { factory: function () { return function () { // ... } } }); ``` #### Using an inherited factory to create the constructor By inheritance the constructors of the descendant classes will be automatically created as well. ```js var Ancestor = Class(Object, { factory: function () { return function () { // ... } } }); var Descendant = Class(Ancestor, {}); ``` #### Using the default factory to create the constructor You don't need to pass anything if you need a noop function as constructor. The Class.factory() will create a noop constructor by default. ```js var MyClass = Class(Object, {}); ``` In fact you don't need to pass any arguments to the Class function if you need an empty class inheriting from the Object native class. ```js var MyClass = Class(); ``` The default factory calls the build() and init() methods if they are given. ```js var MyClass = Class({ prototype: { build: function (options) { console.log("build", options); }, init: function (options) { console.log("init", options); } } }); var my = new MyClass({a: 1, b: 2}); // build {a: 1, b: 2} // init {a: 1, b: 2} var my2 = my.clone({c: 3}); // build {c: 3} var MyClass2 = MyClass.extend({}, [{d: 4}]); // build {d: 4} ``` ### Instantiation #### Creating new instance with the new operator Ofc. you can create a new instance in the javascript way. ```js var MyClass = Class(); var my = new MyClass(); ``` #### Creating a new instance with the static newInstance method If you want to pass an array of arguments then you can do it the following way. ```js var MyClass = Class.extend({ prototype: { constructor: function () { for (var i in arguments) console.log(arguments[i]); } } }); var my = MyClass.newInstance.apply(MyClass, ["a", "b", "c"]); // a // b // c ``` #### Creating new instance with clone You can create a new instance by cloning the prototype of the class. ```js var MyClass = Class(); var my = Class.prototype.clone.call(MyClass.prototype); ``` Or you can inherit the utility methods to make this easier. ```js var MyClass = Class.extend(); var my = MyClass.prototype.clone(); ``` Just be aware that by default cloning calls only the `build()` method, so the `init()` method won't be called by the new instance. #### Cloning instances You can clone an existing instance with the clone method. ```js var MyClass = Class.extend(); var my = MyClass.prototype.clone(); var my2 = my.clone(); ``` Be aware that this is prototypal inheritance with Object.create(), so the inherited properties won't be enumerable. The clone() method calls the build() method on the new instance if it is given. #### Using clone in the constructor You can use the same behavior both by cloning and by creating a new instance using the constructor ```js var MyClass = Class.extend({ lastIndex: 0, prototype: { index: undefined, constructor: function MyClass() { return MyClass.prototype.clone(); }, clone: function () { var instance = Class.prototype.clone.call(this); instance.index = ++MyClass.lastIndex; return instance; } } }); var my1 = new MyClass(); var my2 = MyClass.prototype.clone(); var my3 = my1.clone(); var my4 = my2.clone(); ``` Be aware that this way the constructor will drop the instance created with the `new` operator. Be aware that the clone() method is used by inheritance, so creating the prototype of a descendant class will use the clone() method as well. ```js var Descendant = MyClass.clone(function Descendant() { return Descendant.prototype.clone(); }); var my5 = Descendant.prototype; var my6 = new Descendant(); // ... ``` #### Using absorb(), merge() or inheritance to set the defaults values on properties You can use absorb() to set default values after configuration. ```js var MyClass = Class.extend({ prototype: { constructor: function (config) { var theDefaults = { // ... }; this.merge(config); this.absorb(theDefaults); } } }); ``` You can use merge() to set default values before configuration. ```js var MyClass = Class.extend({ prototype: { constructor: function (config) { var theDefaults = { // ... }; this.merge(theDefaults); this.merge(config); } } }); ``` You can use inheritance to set default values on class level. ```js var MyClass = Class.extend({ prototype: { aProperty: defaultValue, // ... constructor: function (config) { this.merge(config); } } }); ``` ## License MIT - 2015 Jánszky László Lajos argparse ======== [](http://travis-ci.org/nodeca/argparse) [](https://www.npmjs.org/package/argparse) CLI arguments parser for node.js. Javascript port of python's [argparse](http://docs.python.org/dev/library/argparse.html) module (original version 3.2). That's a full port, except some very rare options, recorded in issue tracker. **NB. Difference with original.** - Method names changed to camelCase. See [generated docs](http://nodeca.github.com/argparse/). - Use `defaultValue` instead of `default`. - Use `argparse.Const.REMAINDER` instead of `argparse.REMAINDER`, and similarly for constant values `OPTIONAL`, `ZERO_OR_MORE`, and `ONE_OR_MORE` (aliases for `nargs` values `'?'`, `'*'`, `'+'`, respectively), and `SUPPRESS`. Example ======= test.js file: ```javascript #!/usr/bin/env node 'use strict'; var ArgumentParser = require('../lib/argparse').ArgumentParser; var parser = new ArgumentParser({ version: '0.0.1', addHelp:true, description: 'Argparse example' }); parser.addArgument( [ '-f', '--foo' ], { help: 'foo bar' } ); parser.addArgument( [ '-b', '--bar' ], { help: 'bar foo' } ); parser.addArgument( '--baz', { help: 'baz bar' } ); var args = parser.parseArgs(); console.dir(args); ``` Display help: ``` $ ./test.js -h usage: example.js [-h] [-v] [-f FOO] [-b BAR] [--baz BAZ] Argparse example Optional arguments: -h, --help Show this help message and exit. -v, --version Show program's version number and exit. -f FOO, --foo FOO foo bar -b BAR, --bar BAR bar foo --baz BAZ baz bar ``` Parse arguments: ``` $ ./test.js -f=3 --bar=4 --baz 5 { foo: '3', bar: '4', baz: '5' } ``` More [examples](https://github.com/nodeca/argparse/tree/master/examples). ArgumentParser objects ====================== ``` new ArgumentParser({parameters hash}); ``` Creates a new ArgumentParser object. **Supported params:** - ```description``` - Text to display before the argument help. - ```epilog``` - Text to display after the argument help. - ```addHelp``` - Add a -h/–help option to the parser. (default: true) - ```argumentDefault``` - Set the global default value for arguments. (default: null) - ```parents``` - A list of ArgumentParser objects whose arguments should also be included. - ```prefixChars``` - The set of characters that prefix optional arguments. (default: ‘-‘) - ```formatterClass``` - A class for customizing the help output. - ```prog``` - The name of the program (default: `path.basename(process.argv[1])`) - ```usage``` - The string describing the program usage (default: generated) - ```conflictHandler``` - Usually unnecessary, defines strategy for resolving conflicting optionals. **Not supported yet** - ```fromfilePrefixChars``` - The set of characters that prefix files from which additional arguments should be read. Details in [original ArgumentParser guide](http://docs.python.org/dev/library/argparse.html#argumentparser-objects) addArgument() method ==================== ``` ArgumentParser.addArgument(name or flag or [name] or [flags...], {options}) ``` Defines how a single command-line argument should be parsed. - ```name or flag or [name] or [flags...]``` - Either a positional name (e.g., `'foo'`), a single option (e.g., `'-f'` or `'--foo'`), an array of a single positional name (e.g., `['foo']`), or an array of options (e.g., `['-f', '--foo']`). Options: - ```action``` - The basic type of action to be taken when this argument is encountered at the command line. - ```nargs```- The number of command-line arguments that should be consumed. - ```constant``` - A constant value required by some action and nargs selections. - ```defaultValue``` - The value produced if the argument is absent from the command line. - ```type``` - The type to which the command-line argument should be converted. - ```choices``` - A container of the allowable values for the argument. - ```required``` - Whether or not the command-line option may be omitted (optionals only). - ```help``` - A brief description of what the argument does. - ```metavar``` - A name for the argument in usage messages. - ```dest``` - The name of the attribute to be added to the object returned by parseArgs(). Details in [original add_argument guide](http://docs.python.org/dev/library/argparse.html#the-add-argument-method) Action (some details) ================ ArgumentParser objects associate command-line arguments with actions. These actions can do just about anything with the command-line arguments associated with them, though most actions simply add an attribute to the object returned by parseArgs(). The action keyword argument specifies how the command-line arguments should be handled. The supported actions are: - ```store``` - Just stores the argument’s value. This is the default action. - ```storeConst``` - Stores value, specified by the const keyword argument. (Note that the const keyword argument defaults to the rather unhelpful None.) The 'storeConst' action is most commonly used with optional arguments, that specify some sort of flag. - ```storeTrue``` and ```storeFalse``` - Stores values True and False respectively. These are special cases of 'storeConst'. - ```append``` - Stores a list, and appends each argument value to the list. This is useful to allow an option to be specified multiple times. - ```appendConst``` - Stores a list, and appends value, specified by the const keyword argument to the list. (Note, that the const keyword argument defaults is None.) The 'appendConst' action is typically used when multiple arguments need to store constants to the same list. - ```count``` - Counts the number of times a keyword argument occurs. For example, used for increasing verbosity levels. - ```help``` - Prints a complete help message for all the options in the current parser and then exits. By default a help action is automatically added to the parser. See ArgumentParser for details of how the output is created. - ```version``` - Prints version information and exit. Expects a `version=` keyword argument in the addArgument() call. Details in [original action guide](http://docs.python.org/dev/library/argparse.html#action) Sub-commands ============ ArgumentParser.addSubparsers() Many programs split their functionality into a number of sub-commands, for example, the svn program can invoke sub-commands like `svn checkout`, `svn update`, and `svn commit`. Splitting up functionality this way can be a particularly good idea when a program performs several different functions which require different kinds of command-line arguments. `ArgumentParser` supports creation of such sub-commands with `addSubparsers()` method. The `addSubparsers()` method is normally called with no arguments and returns an special action object. This object has a single method `addParser()`, which takes a command name and any `ArgumentParser` constructor arguments, and returns an `ArgumentParser` object that can be modified as usual. Example: sub_commands.js ```javascript #!/usr/bin/env node 'use strict'; var ArgumentParser = require('../lib/argparse').ArgumentParser; var parser = new ArgumentParser({ version: '0.0.1', addHelp:true, description: 'Argparse examples: sub-commands', }); var subparsers = parser.addSubparsers({ title:'subcommands', dest:"subcommand_name" }); var bar = subparsers.addParser('c1', {addHelp:true}); bar.addArgument( [ '-f', '--foo' ], { action: 'store', help: 'foo3 bar3' } ); var bar = subparsers.addParser( 'c2', {aliases:['co'], addHelp:true} ); bar.addArgument( [ '-b', '--bar' ], { action: 'store', type: 'int', help: 'foo3 bar3' } ); var args = parser.parseArgs(); console.dir(args); ``` Details in [original sub-commands guide](http://docs.python.org/dev/library/argparse.html#sub-commands) Contributors ============ - [Eugene Shkuropat](https://github.com/shkuropat) - [Paul Jacobson](https://github.com/hpaulj) [others](https://github.com/nodeca/argparse/graphs/contributors) License ======= Copyright (c) 2012 [Vitaly Puzrin](https://github.com/puzrin). Released under the MIT license. See [LICENSE](https://github.com/nodeca/argparse/blob/master/LICENSE) for details. # js-sha256 [](https://travis-ci.org/emn178/js-sha256) [](https://coveralls.io/r/emn178/js-sha256?branch=master) [](https://cdnjs.com/libraries/js-sha256/) [](https://nodei.co/npm/js-sha256/) A simple SHA-256 / SHA-224 hash function for JavaScript supports UTF-8 encoding. ## Demo [SHA256 Online](http://emn178.github.io/online-tools/sha256.html) [SHA224 Online](http://emn178.github.io/online-tools/sha224.html) ## Download [Compress](https://raw.github.com/emn178/js-sha256/master/build/sha256.min.js) [Uncompress](https://raw.github.com/emn178/js-sha256/master/src/sha256.js) ## Installation You can also install js-sha256 by using Bower. bower install js-sha256 For node.js, you can use this command to install: npm install js-sha256 ## Usage You could use like this: ```JavaScript sha256('Message to hash'); sha224('Message to hash'); var hash = sha256.create(); hash.update('Message to hash'); hash.hex(); var hash2 = sha256.update('Message to hash'); hash2.update('Message2 to hash'); hash2.array(); // HMAC sha256.hmac('key', 'Message to hash'); sha224.hmac('key', 'Message to hash'); var hash = sha256.hmac.create('key'); hash.update('Message to hash'); hash.hex(); var hash2 = sha256.hmac.update('key', 'Message to hash'); hash2.update('Message2 to hash'); hash2.array(); ``` If you use node.js, you should require the module first: ```JavaScript var sha256 = require('js-sha256'); ``` or ```JavaScript var sha256 = require('js-sha256').sha256; var sha224 = require('js-sha256').sha224; ``` It supports AMD: ```JavaScript require(['your/path/sha256.js'], function(sha256) { // ... }); ``` or TypeScript ```TypeScript import { sha256, sha224 } from 'js-sha256'; ``` ## Example ```JavaScript sha256(''); // e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 sha256('The quick brown fox jumps over the lazy dog'); // d7a8fbb307d7809469ca9abcb0082e4f8d5651e46d3cdb762d02d0bf37c9e592 sha256('The quick brown fox jumps over the lazy dog.'); // ef537f25c895bfa782526529a9b63d97aa631564d5d789c2b765448c8635fb6c sha224(''); // d14a028c2a3a2bc9476102bb288234c415a2b01f828ea62ac5b3e42f sha224('The quick brown fox jumps over the lazy dog'); // 730e109bd7a8a32b1cb9d9a09aa2325d2430587ddbc0c38bad911525 sha224('The quick brown fox jumps over the lazy dog.'); // 619cba8e8e05826e9b8c519c0a5c68f4fb653e8a3d8aa04bb2c8cd4c // It also supports UTF-8 encoding sha256('中文'); // 72726d8818f693066ceb69afa364218b692e62ea92b385782363780f47529c21 sha224('中文'); // dfbab71afdf54388af4d55f8bd3de8c9b15e0eb916bf9125f4a959d4 // It also supports byte `Array`, `Uint8Array`, `ArrayBuffer` input sha256([]); // e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 sha256(new Uint8Array([211, 212])); // 182889f925ae4e5cc37118ded6ed87f7bdc7cab5ec5e78faef2e50048999473f // Different output sha256(''); // e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 sha256.hex(''); // e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 sha256.array(''); // [227, 176, 196, 66, 152, 252, 28, 20, 154, 251, 244, 200, 153, 111, 185, 36, 39, 174, 65, 228, 100, 155, 147, 76, 164, 149, 153, 27, 120, 82, 184, 85] sha256.digest(''); // [227, 176, 196, 66, 152, 252, 28, 20, 154, 251, 244, 200, 153, 111, 185, 36, 39, 174, 65, 228, 100, 155, 147, 76, 164, 149, 153, 27, 120, 82, 184, 85] sha256.arrayBuffer(''); // ArrayBuffer ``` ## License The project is released under the [MIT license](http://www.opensource.org/licenses/MIT). ## Contact The project's website is located at https://github.com/emn178/js-sha256 Author: Chen, Yi-Cyuan (emn178@gmail.com) <h1 align="center">Enquirer</h1> <p align="center"> <a href="https://npmjs.org/package/enquirer"> <img src="https://img.shields.io/npm/v/enquirer.svg" alt="version"> </a> <a href="https://travis-ci.org/enquirer/enquirer"> <img src="https://img.shields.io/travis/enquirer/enquirer.svg" alt="travis"> </a> <a href="https://npmjs.org/package/enquirer"> <img src="https://img.shields.io/npm/dm/enquirer.svg" alt="downloads"> </a> </p> <br> <br> <p align="center"> <b>Stylish CLI prompts that are user-friendly, intuitive and easy to create.</b><br> <sub>>_ Prompts should be more like conversations than inquisitions▌</sub> </p> <br> <p align="center"> <sub>(Example shows Enquirer's <a href="#survey-prompt">Survey Prompt</a>)</a></sub> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/survey-prompt.gif" alt="Enquirer Survey Prompt" width="750"><br> <sub>The terminal in all examples is <a href="https://hyper.is/">Hyper</a>, theme is <a href="https://github.com/jonschlinkert/hyper-monokai-extended">hyper-monokai-extended</a>.</sub><br><br> <a href="#built-in-prompts"><strong>See more prompt examples</strong></a> </p> <br> <br> Created by [jonschlinkert](https://github.com/jonschlinkert) and [doowb](https://github.com/doowb), Enquirer is fast, easy to use, and lightweight enough for small projects, while also being powerful and customizable enough for the most advanced use cases. * **Fast** - [Loads in ~4ms](#-performance) (that's about _3-4 times faster than a [single frame of a HD movie](http://www.endmemo.com/sconvert/framespersecondframespermillisecond.php) at 60fps_) * **Lightweight** - Only one dependency, the excellent [ansi-colors](https://github.com/doowb/ansi-colors) by [Brian Woodward](https://github.com/doowb). * **Easy to implement** - Uses promises and async/await and sensible defaults to make prompts easy to create and implement. * **Easy to use** - Thrill your users with a better experience! Navigating around input and choices is a breeze. You can even create [quizzes](examples/fun/countdown.js), or [record](examples/fun/record.js) and [playback](examples/fun/play.js) key bindings to aid with tutorials and videos. * **Intuitive** - Keypress combos are available to simplify usage. * **Flexible** - All prompts can be used standalone or chained together. * **Stylish** - Easily override semantic styles and symbols for any part of the prompt. * **Extensible** - Easily create and use custom prompts by extending Enquirer's built-in [prompts](#-prompts). * **Pluggable** - Add advanced features to Enquirer using plugins. * **Validation** - Optionally validate user input with any prompt. * **Well tested** - All prompts are well-tested, and tests are easy to create without having to use brittle, hacky solutions to spy on prompts or "inject" values. * **Examples** - There are numerous [examples](examples) available to help you get started. If you like Enquirer, please consider starring or tweeting about this project to show your support. Thanks! <br> <p align="center"> <b>>_ Ready to start making prompts your users will love? ▌</b><br> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/heartbeat.gif" alt="Enquirer Select Prompt with heartbeat example" width="750"> </p> <br> <br> ## ❯ Getting started Get started with Enquirer, the most powerful and easy-to-use Node.js library for creating interactive CLI prompts. * [Install](#-install) * [Usage](#-usage) * [Enquirer](#-enquirer) * [Prompts](#-prompts) - [Built-in Prompts](#-prompts) - [Custom Prompts](#-custom-prompts) * [Key Bindings](#-key-bindings) * [Options](#-options) * [Release History](#-release-history) * [Performance](#-performance) * [About](#-about) <br> ## ❯ Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install enquirer --save ``` Install with [yarn](https://yarnpkg.com/en/): ```sh $ yarn add enquirer ``` <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/npm-install.gif" alt="Install Enquirer with NPM" width="750"> </p> _(Requires Node.js 8.6 or higher. Please let us know if you need support for an earlier version by creating an [issue](../../issues/new).)_ <br> ## ❯ Usage ### Single prompt The easiest way to get started with enquirer is to pass a [question object](#prompt-options) to the `prompt` method. ```js const { prompt } = require('enquirer'); const response = await prompt({ type: 'input', name: 'username', message: 'What is your username?' }); console.log(response); // { username: 'jonschlinkert' } ``` _(Examples with `await` need to be run inside an `async` function)_ ### Multiple prompts Pass an array of ["question" objects](#prompt-options) to run a series of prompts. ```js const response = await prompt([ { type: 'input', name: 'name', message: 'What is your name?' }, { type: 'input', name: 'username', message: 'What is your username?' } ]); console.log(response); // { name: 'Edward Chan', username: 'edwardmchan' } ``` ### Different ways to run enquirer #### 1. By importing the specific `built-in prompt` ```js const { Confirm } = require('enquirer'); const prompt = new Confirm({ name: 'question', message: 'Did you like enquirer?' }); prompt.run() .then(answer => console.log('Answer:', answer)); ``` #### 2. By passing the options to `prompt` ```js const { prompt } = require('enquirer'); prompt({ type: 'confirm', name: 'question', message: 'Did you like enquirer?' }) .then(answer => console.log('Answer:', answer)); ``` **Jump to**: [Getting Started](#-getting-started) · [Prompts](#-prompts) · [Options](#-options) · [Key Bindings](#-key-bindings) <br> ## ❯ Enquirer **Enquirer is a prompt runner** Add Enquirer to your JavaScript project with following line of code. ```js const Enquirer = require('enquirer'); ``` The main export of this library is the `Enquirer` class, which has methods and features designed to simplify running prompts. ```js const { prompt } = require('enquirer'); const question = [ { type: 'input', name: 'username', message: 'What is your username?' }, { type: 'password', name: 'password', message: 'What is your password?' } ]; let answers = await prompt(question); console.log(answers); ``` **Prompts control how values are rendered and returned** Each individual prompt is a class with special features and functionality for rendering the types of values you want to show users in the terminal, and subsequently returning the types of values you need to use in your application. **How can I customize prompts?** Below in this guide you will find information about creating [custom prompts](#-custom-prompts). For now, we'll focus on how to customize an existing prompt. All of the individual [prompt classes](#built-in-prompts) in this library are exposed as static properties on Enquirer. This allows them to be used directly without using `enquirer.prompt()`. Use this approach if you need to modify a prompt instance, or listen for events on the prompt. **Example** ```js const { Input } = require('enquirer'); const prompt = new Input({ name: 'username', message: 'What is your username?' }); prompt.run() .then(answer => console.log('Username:', answer)) .catch(console.error); ``` ### [Enquirer](index.js#L20) Create an instance of `Enquirer`. **Params** * `options` **{Object}**: (optional) Options to use with all prompts. * `answers` **{Object}**: (optional) Answers object to initialize with. **Example** ```js const Enquirer = require('enquirer'); const enquirer = new Enquirer(); ``` ### [register()](index.js#L42) Register a custom prompt type. **Params** * `type` **{String}** * `fn` **{Function|Prompt}**: `Prompt` class, or a function that returns a `Prompt` class. * `returns` **{Object}**: Returns the Enquirer instance **Example** ```js const Enquirer = require('enquirer'); const enquirer = new Enquirer(); enquirer.register('customType', require('./custom-prompt')); ``` ### [prompt()](index.js#L78) Prompt function that takes a "question" object or array of question objects, and returns an object with responses from the user. **Params** * `questions` **{Array|Object}**: Options objects for one or more prompts to run. * `returns` **{Promise}**: Promise that returns an "answers" object with the user's responses. **Example** ```js const Enquirer = require('enquirer'); const enquirer = new Enquirer(); const response = await enquirer.prompt({ type: 'input', name: 'username', message: 'What is your username?' }); console.log(response); ``` ### [use()](index.js#L160) Use an enquirer plugin. **Params** * `plugin` **{Function}**: Plugin function that takes an instance of Enquirer. * `returns` **{Object}**: Returns the Enquirer instance. **Example** ```js const Enquirer = require('enquirer'); const enquirer = new Enquirer(); const plugin = enquirer => { // do stuff to enquire instance }; enquirer.use(plugin); ``` ### [Enquirer#prompt](index.js#L210) Prompt function that takes a "question" object or array of question objects, and returns an object with responses from the user. **Params** * `questions` **{Array|Object}**: Options objects for one or more prompts to run. * `returns` **{Promise}**: Promise that returns an "answers" object with the user's responses. **Example** ```js const { prompt } = require('enquirer'); const response = await prompt({ type: 'input', name: 'username', message: 'What is your username?' }); console.log(response); ``` <br> ## ❯ Prompts This section is about Enquirer's prompts: what they look like, how they work, how to run them, available options, and how to customize the prompts or create your own prompt concept. **Getting started with Enquirer's prompts** * [Prompt](#prompt) - The base `Prompt` class used by other prompts - [Prompt Options](#prompt-options) * [Built-in prompts](#built-in-prompts) * [Prompt Types](#prompt-types) - The base `Prompt` class used by other prompts * [Custom prompts](#%E2%9D%AF-custom-prompts) - Enquirer 2.0 introduced the concept of prompt "types", with the goal of making custom prompts easier than ever to create and use. ### Prompt The base `Prompt` class is used to create all other prompts. ```js const { Prompt } = require('enquirer'); class MyCustomPrompt extends Prompt {} ``` See the documentation for [creating custom prompts](#-custom-prompts) to learn more about how this works. #### Prompt Options Each prompt takes an options object (aka "question" object), that implements the following interface: ```js { // required type: string | function, name: string | function, message: string | function | async function, // optional skip: boolean | function | async function, initial: string | function | async function, format: function | async function, result: function | async function, validate: function | async function, } ``` Each property of the options object is described below: | **Property** | **Required?** | **Type** | **Description** | | ------------ | ------------- | ------------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `type` | yes | `string\|function` | Enquirer uses this value to determine the type of prompt to run, but it's optional when prompts are run directly. | | `name` | yes | `string\|function` | Used as the key for the answer on the returned values (answers) object. | | `message` | yes | `string\|function` | The message to display when the prompt is rendered in the terminal. | | `skip` | no | `boolean\|function` | If `true` it will not ask that prompt. | | `initial` | no | `string\|function` | The default value to return if the user does not supply a value. | | `format` | no | `function` | Function to format user input in the terminal. | | `result` | no | `function` | Function to format the final submitted value before it's returned. | | `validate` | no | `function` | Function to validate the submitted value before it's returned. This function may return a boolean or a string. If a string is returned it will be used as the validation error message. | **Example usage** ```js const { prompt } = require('enquirer'); const question = { type: 'input', name: 'username', message: 'What is your username?' }; prompt(question) .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` <br> ### Built-in prompts * [AutoComplete Prompt](#autocomplete-prompt) * [BasicAuth Prompt](#basicauth-prompt) * [Confirm Prompt](#confirm-prompt) * [Form Prompt](#form-prompt) * [Input Prompt](#input-prompt) * [Invisible Prompt](#invisible-prompt) * [List Prompt](#list-prompt) * [MultiSelect Prompt](#multiselect-prompt) * [Numeral Prompt](#numeral-prompt) * [Password Prompt](#password-prompt) * [Quiz Prompt](#quiz-prompt) * [Survey Prompt](#survey-prompt) * [Scale Prompt](#scale-prompt) * [Select Prompt](#select-prompt) * [Sort Prompt](#sort-prompt) * [Snippet Prompt](#snippet-prompt) * [Toggle Prompt](#toggle-prompt) ### AutoComplete Prompt Prompt that auto-completes as the user types, and returns the selected value as a string. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/autocomplete-prompt.gif" alt="Enquirer AutoComplete Prompt" width="750"> </p> **Example Usage** ```js const { AutoComplete } = require('enquirer'); const prompt = new AutoComplete({ name: 'flavor', message: 'Pick your favorite flavor', limit: 10, initial: 2, choices: [ 'Almond', 'Apple', 'Banana', 'Blackberry', 'Blueberry', 'Cherry', 'Chocolate', 'Cinnamon', 'Coconut', 'Cranberry', 'Grape', 'Nougat', 'Orange', 'Pear', 'Pineapple', 'Raspberry', 'Strawberry', 'Vanilla', 'Watermelon', 'Wintergreen' ] }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **AutoComplete Options** | Option | Type | Default | Description | | ----------- | ---------- | ------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------ | | `highlight` | `function` | `dim` version of primary style | The color to use when "highlighting" characters in the list that match user input. | | `multiple` | `boolean` | `false` | Allow multiple choices to be selected. | | `suggest` | `function` | Greedy match, returns true if choice message contains input string. | Function that filters choices. Takes user input and a choices array, and returns a list of matching choices. | | `initial` | `number` | 0 | Preselected item in the list of choices. | | `footer` | `function` | None | Function that displays [footer text](https://github.com/enquirer/enquirer/blob/6c2819518a1e2ed284242a99a685655fbaabfa28/examples/autocomplete/option-footer.js#L10) | **Related prompts** * [Select](#select-prompt) * [MultiSelect](#multiselect-prompt) * [Survey](#survey-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### BasicAuth Prompt Prompt that asks for username and password to authenticate the user. The default implementation of `authenticate` function in `BasicAuth` prompt is to compare the username and password with the values supplied while running the prompt. The implementer is expected to override the `authenticate` function with a custom logic such as making an API request to a server to authenticate the username and password entered and expect a token back. <p align="center"> <img src="https://user-images.githubusercontent.com/13731210/61570485-7ffd9c00-aaaa-11e9-857a-d47dc7008284.gif" alt="Enquirer BasicAuth Prompt" width="750"> </p> **Example Usage** ```js const { BasicAuth } = require('enquirer'); const prompt = new BasicAuth({ name: 'password', message: 'Please enter your password', username: 'rajat-sr', password: '123', showPassword: true }); prompt .run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Confirm Prompt Prompt that returns `true` or `false`. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/confirm-prompt.gif" alt="Enquirer Confirm Prompt" width="750"> </p> **Example Usage** ```js const { Confirm } = require('enquirer'); const prompt = new Confirm({ name: 'question', message: 'Want to answer?' }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **Related prompts** * [Input](#input-prompt) * [Numeral](#numeral-prompt) * [Password](#password-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Form Prompt Prompt that allows the user to enter and submit multiple values on a single terminal screen. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/form-prompt.gif" alt="Enquirer Form Prompt" width="750"> </p> **Example Usage** ```js const { Form } = require('enquirer'); const prompt = new Form({ name: 'user', message: 'Please provide the following information:', choices: [ { name: 'firstname', message: 'First Name', initial: 'Jon' }, { name: 'lastname', message: 'Last Name', initial: 'Schlinkert' }, { name: 'username', message: 'GitHub username', initial: 'jonschlinkert' } ] }); prompt.run() .then(value => console.log('Answer:', value)) .catch(console.error); ``` **Related prompts** * [Input](#input-prompt) * [Survey](#survey-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Input Prompt Prompt that takes user input and returns a string. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/input-prompt.gif" alt="Enquirer Input Prompt" width="750"> </p> **Example Usage** ```js const { Input } = require('enquirer'); const prompt = new Input({ message: 'What is your username?', initial: 'jonschlinkert' }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.log); ``` You can use [data-store](https://github.com/jonschlinkert/data-store) to store [input history](https://github.com/enquirer/enquirer/blob/master/examples/input/option-history.js) that the user can cycle through (see [source](https://github.com/enquirer/enquirer/blob/8407dc3579123df5e6e20215078e33bb605b0c37/lib/prompts/input.js)). **Related prompts** * [Confirm](#confirm-prompt) * [Numeral](#numeral-prompt) * [Password](#password-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Invisible Prompt Prompt that takes user input, hides it from the terminal, and returns a string. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/invisible-prompt.gif" alt="Enquirer Invisible Prompt" width="750"> </p> **Example Usage** ```js const { Invisible } = require('enquirer'); const prompt = new Invisible({ name: 'secret', message: 'What is your secret?' }); prompt.run() .then(answer => console.log('Answer:', { secret: answer })) .catch(console.error); ``` **Related prompts** * [Password](#password-prompt) * [Input](#input-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### List Prompt Prompt that returns a list of values, created by splitting the user input. The default split character is `,` with optional trailing whitespace. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/list-prompt.gif" alt="Enquirer List Prompt" width="750"> </p> **Example Usage** ```js const { List } = require('enquirer'); const prompt = new List({ name: 'keywords', message: 'Type comma-separated keywords' }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **Related prompts** * [Sort](#sort-prompt) * [Select](#select-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### MultiSelect Prompt Prompt that allows the user to select multiple items from a list of options. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/multiselect-prompt.gif" alt="Enquirer MultiSelect Prompt" width="750"> </p> **Example Usage** ```js const { MultiSelect } = require('enquirer'); const prompt = new MultiSelect({ name: 'value', message: 'Pick your favorite colors', limit: 7, choices: [ { name: 'aqua', value: '#00ffff' }, { name: 'black', value: '#000000' }, { name: 'blue', value: '#0000ff' }, { name: 'fuchsia', value: '#ff00ff' }, { name: 'gray', value: '#808080' }, { name: 'green', value: '#008000' }, { name: 'lime', value: '#00ff00' }, { name: 'maroon', value: '#800000' }, { name: 'navy', value: '#000080' }, { name: 'olive', value: '#808000' }, { name: 'purple', value: '#800080' }, { name: 'red', value: '#ff0000' }, { name: 'silver', value: '#c0c0c0' }, { name: 'teal', value: '#008080' }, { name: 'white', value: '#ffffff' }, { name: 'yellow', value: '#ffff00' } ] }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); // Answer: ['aqua', 'blue', 'fuchsia'] ``` **Example key-value pairs** Optionally, pass a `result` function and use the `.map` method to return an object of key-value pairs of the selected names and values: [example](./examples/multiselect/option-result.js) ```js const { MultiSelect } = require('enquirer'); const prompt = new MultiSelect({ name: 'value', message: 'Pick your favorite colors', limit: 7, choices: [ { name: 'aqua', value: '#00ffff' }, { name: 'black', value: '#000000' }, { name: 'blue', value: '#0000ff' }, { name: 'fuchsia', value: '#ff00ff' }, { name: 'gray', value: '#808080' }, { name: 'green', value: '#008000' }, { name: 'lime', value: '#00ff00' }, { name: 'maroon', value: '#800000' }, { name: 'navy', value: '#000080' }, { name: 'olive', value: '#808000' }, { name: 'purple', value: '#800080' }, { name: 'red', value: '#ff0000' }, { name: 'silver', value: '#c0c0c0' }, { name: 'teal', value: '#008080' }, { name: 'white', value: '#ffffff' }, { name: 'yellow', value: '#ffff00' } ], result(names) { return this.map(names); } }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); // Answer: { aqua: '#00ffff', blue: '#0000ff', fuchsia: '#ff00ff' } ``` **Related prompts** * [AutoComplete](#autocomplete-prompt) * [Select](#select-prompt) * [Survey](#survey-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Numeral Prompt Prompt that takes a number as input. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/numeral-prompt.gif" alt="Enquirer Numeral Prompt" width="750"> </p> **Example Usage** ```js const { NumberPrompt } = require('enquirer'); const prompt = new NumberPrompt({ name: 'number', message: 'Please enter a number' }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **Related prompts** * [Input](#input-prompt) * [Confirm](#confirm-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Password Prompt Prompt that takes user input and masks it in the terminal. Also see the [invisible prompt](#invisible-prompt) <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/password-prompt.gif" alt="Enquirer Password Prompt" width="750"> </p> **Example Usage** ```js const { Password } = require('enquirer'); const prompt = new Password({ name: 'password', message: 'What is your password?' }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **Related prompts** * [Input](#input-prompt) * [Invisible](#invisible-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Quiz Prompt Prompt that allows the user to play multiple-choice quiz questions. <p align="center"> <img src="https://user-images.githubusercontent.com/13731210/61567561-891d4780-aa6f-11e9-9b09-3d504abd24ed.gif" alt="Enquirer Quiz Prompt" width="750"> </p> **Example Usage** ```js const { Quiz } = require('enquirer'); const prompt = new Quiz({ name: 'countries', message: 'How many countries are there in the world?', choices: ['165', '175', '185', '195', '205'], correctChoice: 3 }); prompt .run() .then(answer => { if (answer.correct) { console.log('Correct!'); } else { console.log(`Wrong! Correct answer is ${answer.correctAnswer}`); } }) .catch(console.error); ``` **Quiz Options** | Option | Type | Required | Description | | ----------- | ---------- | ---------- | ------------------------------------------------------------------------------------------------------------ | | `choices` | `array` | Yes | The list of possible answers to the quiz question. | | `correctChoice`| `number` | Yes | Index of the correct choice from the `choices` array. | **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Survey Prompt Prompt that allows the user to provide feedback for a list of questions. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/survey-prompt.gif" alt="Enquirer Survey Prompt" width="750"> </p> **Example Usage** ```js const { Survey } = require('enquirer'); const prompt = new Survey({ name: 'experience', message: 'Please rate your experience', scale: [ { name: '1', message: 'Strongly Disagree' }, { name: '2', message: 'Disagree' }, { name: '3', message: 'Neutral' }, { name: '4', message: 'Agree' }, { name: '5', message: 'Strongly Agree' } ], margin: [0, 0, 2, 1], choices: [ { name: 'interface', message: 'The website has a friendly interface.' }, { name: 'navigation', message: 'The website is easy to navigate.' }, { name: 'images', message: 'The website usually has good images.' }, { name: 'upload', message: 'The website makes it easy to upload images.' }, { name: 'colors', message: 'The website has a pleasing color palette.' } ] }); prompt.run() .then(value => console.log('ANSWERS:', value)) .catch(console.error); ``` **Related prompts** * [Scale](#scale-prompt) * [Snippet](#snippet-prompt) * [Select](#select-prompt) *** ### Scale Prompt A more compact version of the [Survey prompt](#survey-prompt), the Scale prompt allows the user to quickly provide feedback using a [Likert Scale](https://en.wikipedia.org/wiki/Likert_scale). <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/scale-prompt.gif" alt="Enquirer Scale Prompt" width="750"> </p> **Example Usage** ```js const { Scale } = require('enquirer'); const prompt = new Scale({ name: 'experience', message: 'Please rate your experience', scale: [ { name: '1', message: 'Strongly Disagree' }, { name: '2', message: 'Disagree' }, { name: '3', message: 'Neutral' }, { name: '4', message: 'Agree' }, { name: '5', message: 'Strongly Agree' } ], margin: [0, 0, 2, 1], choices: [ { name: 'interface', message: 'The website has a friendly interface.', initial: 2 }, { name: 'navigation', message: 'The website is easy to navigate.', initial: 2 }, { name: 'images', message: 'The website usually has good images.', initial: 2 }, { name: 'upload', message: 'The website makes it easy to upload images.', initial: 2 }, { name: 'colors', message: 'The website has a pleasing color palette.', initial: 2 } ] }); prompt.run() .then(value => console.log('ANSWERS:', value)) .catch(console.error); ``` **Related prompts** * [AutoComplete](#autocomplete-prompt) * [Select](#select-prompt) * [Survey](#survey-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Select Prompt Prompt that allows the user to select from a list of options. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/select-prompt.gif" alt="Enquirer Select Prompt" width="750"> </p> **Example Usage** ```js const { Select } = require('enquirer'); const prompt = new Select({ name: 'color', message: 'Pick a flavor', choices: ['apple', 'grape', 'watermelon', 'cherry', 'orange'] }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **Related prompts** * [AutoComplete](#autocomplete-prompt) * [MultiSelect](#multiselect-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Sort Prompt Prompt that allows the user to sort items in a list. **Example** In this [example](https://github.com/enquirer/enquirer/raw/master/examples/sort/prompt.js), custom styling is applied to the returned values to make it easier to see what's happening. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/sort-prompt.gif" alt="Enquirer Sort Prompt" width="750"> </p> **Example Usage** ```js const colors = require('ansi-colors'); const { Sort } = require('enquirer'); const prompt = new Sort({ name: 'colors', message: 'Sort the colors in order of preference', hint: 'Top is best, bottom is worst', numbered: true, choices: ['red', 'white', 'green', 'cyan', 'yellow'].map(n => ({ name: n, message: colors[n](n) })) }); prompt.run() .then(function(answer = []) { console.log(answer); console.log('Your preferred order of colors is:'); console.log(answer.map(key => colors[key](key)).join('\n')); }) .catch(console.error); ``` **Related prompts** * [List](#list-prompt) * [Select](#select-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Snippet Prompt Prompt that allows the user to replace placeholders in a snippet of code or text. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/snippet-prompt.gif" alt="Prompts" width="750"> </p> **Example Usage** ```js const semver = require('semver'); const { Snippet } = require('enquirer'); const prompt = new Snippet({ name: 'username', message: 'Fill out the fields in package.json', required: true, fields: [ { name: 'author_name', message: 'Author Name' }, { name: 'version', validate(value, state, item, index) { if (item && item.name === 'version' && !semver.valid(value)) { return prompt.styles.danger('version should be a valid semver value'); } return true; } } ], template: `{ "name": "\${name}", "description": "\${description}", "version": "\${version}", "homepage": "https://github.com/\${username}/\${name}", "author": "\${author_name} (https://github.com/\${username})", "repository": "\${username}/\${name}", "license": "\${license:ISC}" } ` }); prompt.run() .then(answer => console.log('Answer:', answer.result)) .catch(console.error); ``` **Related prompts** * [Survey](#survey-prompt) * [AutoComplete](#autocomplete-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Toggle Prompt Prompt that allows the user to toggle between two values then returns `true` or `false`. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/toggle-prompt.gif" alt="Enquirer Toggle Prompt" width="750"> </p> **Example Usage** ```js const { Toggle } = require('enquirer'); const prompt = new Toggle({ message: 'Want to answer?', enabled: 'Yep', disabled: 'Nope' }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **Related prompts** * [Confirm](#confirm-prompt) * [Input](#input-prompt) * [Sort](#sort-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Prompt Types There are 5 (soon to be 6!) type classes: * [ArrayPrompt](#arrayprompt) - [Options](#options) - [Properties](#properties) - [Methods](#methods) - [Choices](#choices) - [Defining choices](#defining-choices) - [Choice properties](#choice-properties) - [Related prompts](#related-prompts) * [AuthPrompt](#authprompt) * [BooleanPrompt](#booleanprompt) * DatePrompt (Coming Soon!) * [NumberPrompt](#numberprompt) * [StringPrompt](#stringprompt) Each type is a low-level class that may be used as a starting point for creating higher level prompts. Continue reading to learn how. ### ArrayPrompt The `ArrayPrompt` class is used for creating prompts that display a list of choices in the terminal. For example, Enquirer uses this class as the basis for the [Select](#select) and [Survey](#survey) prompts. #### Options In addition to the [options](#options) available to all prompts, Array prompts also support the following options. | **Option** | **Required?** | **Type** | **Description** | | ----------- | ------------- | --------------- | ----------------------------------------------------------------------------------------------------------------------- | | `autofocus` | `no` | `string\|number` | The index or name of the choice that should have focus when the prompt loads. Only one choice may have focus at a time. | | | `stdin` | `no` | `stream` | The input stream to use for emitting keypress events. Defaults to `process.stdin`. | | `stdout` | `no` | `stream` | The output stream to use for writing the prompt to the terminal. Defaults to `process.stdout`. | | | #### Properties Array prompts have the following instance properties and getters. | **Property name** | **Type** | **Description** | | ----------------- | --------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `choices` | `array` | Array of choices that have been normalized from choices passed on the prompt options. | | `cursor` | `number` | Position of the cursor relative to the _user input (string)_. | | `enabled` | `array` | Returns an array of enabled choices. | | `focused` | `array` | Returns the currently selected choice in the visible list of choices. This is similar to the concept of focus in HTML and CSS. Focused choices are always visible (on-screen). When a list of choices is longer than the list of visible choices, and an off-screen choice is _focused_, the list will scroll to the focused choice and re-render. | | `focused` | Gets the currently selected choice. Equivalent to `prompt.choices[prompt.index]`. | | `index` | `number` | Position of the pointer in the _visible list (array) of choices_. | | `limit` | `number` | The number of choices to display on-screen. | | `selected` | `array` | Either a list of enabled choices (when `options.multiple` is true) or the currently focused choice. | | `visible` | `string` | | #### Methods | **Method** | **Description** | | ------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `pointer()` | Returns the visual symbol to use to identify the choice that currently has focus. The `❯` symbol is often used for this. The pointer is not always visible, as with the `autocomplete` prompt. | | `indicator()` | Returns the visual symbol that indicates whether or not a choice is checked/enabled. | | `focus()` | Sets focus on a choice, if it can be focused. | #### Choices Array prompts support the `choices` option, which is the array of choices users will be able to select from when rendered in the terminal. **Type**: `string|object` **Example** ```js const { prompt } = require('enquirer'); const questions = [{ type: 'select', name: 'color', message: 'Favorite color?', initial: 1, choices: [ { name: 'red', message: 'Red', value: '#ff0000' }, //<= choice object { name: 'green', message: 'Green', value: '#00ff00' }, //<= choice object { name: 'blue', message: 'Blue', value: '#0000ff' } //<= choice object ] }]; let answers = await prompt(questions); console.log('Answer:', answers.color); ``` #### Defining choices Whether defined as a string or object, choices are normalized to the following interface: ```js { name: string; message: string | undefined; value: string | undefined; hint: string | undefined; disabled: boolean | string | undefined; } ``` **Example** ```js const question = { name: 'fruit', message: 'Favorite fruit?', choices: ['Apple', 'Orange', 'Raspberry'] }; ``` Normalizes to the following when the prompt is run: ```js const question = { name: 'fruit', message: 'Favorite fruit?', choices: [ { name: 'Apple', message: 'Apple', value: 'Apple' }, { name: 'Orange', message: 'Orange', value: 'Orange' }, { name: 'Raspberry', message: 'Raspberry', value: 'Raspberry' } ] }; ``` #### Choice properties The following properties are supported on `choice` objects. | **Option** | **Type** | **Description** | | ----------- | ----------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `name` | `string` | The unique key to identify a choice | | `message` | `string` | The message to display in the terminal. `name` is used when this is undefined. | | `value` | `string` | Value to associate with the choice. Useful for creating key-value pairs from user choices. `name` is used when this is undefined. | | `choices` | `array` | Array of "child" choices. | | `hint` | `string` | Help message to display next to a choice. | | `role` | `string` | Determines how the choice will be displayed. Currently the only role supported is `separator`. Additional roles may be added in the future (like `heading`, etc). Please create a [feature request] | | `enabled` | `boolean` | Enabled a choice by default. This is only supported when `options.multiple` is true or on prompts that support multiple choices, like [MultiSelect](#-multiselect). | | `disabled` | `boolean\|string` | Disable a choice so that it cannot be selected. This value may either be `true`, `false`, or a message to display. | | `indicator` | `string\|function` | Custom indicator to render for a choice (like a check or radio button). | #### Related prompts * [AutoComplete](#autocomplete-prompt) * [Form](#form-prompt) * [MultiSelect](#multiselect-prompt) * [Select](#select-prompt) * [Survey](#survey-prompt) *** ### AuthPrompt The `AuthPrompt` is used to create prompts to log in user using any authentication method. For example, Enquirer uses this class as the basis for the [BasicAuth Prompt](#basicauth-prompt). You can also find prompt examples in `examples/auth/` folder that utilizes `AuthPrompt` to create OAuth based authentication prompt or a prompt that authenticates using time-based OTP, among others. `AuthPrompt` has a factory function that creates an instance of `AuthPrompt` class and it expects an `authenticate` function, as an argument, which overrides the `authenticate` function of the `AuthPrompt` class. #### Methods | **Method** | **Description** | | ------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `authenticate()` | Contain all the authentication logic. This function should be overridden to implement custom authentication logic. The default `authenticate` function throws an error if no other function is provided. | #### Choices Auth prompt supports the `choices` option, which is the similar to the choices used in [Form Prompt](#form-prompt). **Example** ```js const { AuthPrompt } = require('enquirer'); function authenticate(value, state) { if (value.username === this.options.username && value.password === this.options.password) { return true; } return false; } const CustomAuthPrompt = AuthPrompt.create(authenticate); const prompt = new CustomAuthPrompt({ name: 'password', message: 'Please enter your password', username: 'rajat-sr', password: '1234567', choices: [ { name: 'username', message: 'username' }, { name: 'password', message: 'password' } ] }); prompt .run() .then(answer => console.log('Authenticated?', answer)) .catch(console.error); ``` #### Related prompts * [BasicAuth Prompt](#basicauth-prompt) *** ### BooleanPrompt The `BooleanPrompt` class is used for creating prompts that display and return a boolean value. ```js const { BooleanPrompt } = require('enquirer'); const prompt = new BooleanPrompt({ header: '========================', message: 'Do you love enquirer?', footer: '========================', }); prompt.run() .then(answer => console.log('Selected:', answer)) .catch(console.error); ``` **Returns**: `boolean` *** ### NumberPrompt The `NumberPrompt` class is used for creating prompts that display and return a numerical value. ```js const { NumberPrompt } = require('enquirer'); const prompt = new NumberPrompt({ header: '************************', message: 'Input the Numbers:', footer: '************************', }); prompt.run() .then(answer => console.log('Numbers are:', answer)) .catch(console.error); ``` **Returns**: `string|number` (number, or number formatted as a string) *** ### StringPrompt The `StringPrompt` class is used for creating prompts that display and return a string value. ```js const { StringPrompt } = require('enquirer'); const prompt = new StringPrompt({ header: '************************', message: 'Input the String:', footer: '************************' }); prompt.run() .then(answer => console.log('String is:', answer)) .catch(console.error); ``` **Returns**: `string` <br> ## ❯ Custom prompts With Enquirer 2.0, custom prompts are easier than ever to create and use. **How do I create a custom prompt?** Custom prompts are created by extending either: * Enquirer's `Prompt` class * one of the built-in [prompts](#-prompts), or * low-level [types](#-types). <!-- Example: HaiKarate Custom Prompt --> ```js const { Prompt } = require('enquirer'); class HaiKarate extends Prompt { constructor(options = {}) { super(options); this.value = options.initial || 0; this.cursorHide(); } up() { this.value++; this.render(); } down() { this.value--; this.render(); } render() { this.clear(); // clear previously rendered prompt from the terminal this.write(`${this.state.message}: ${this.value}`); } } // Use the prompt by creating an instance of your custom prompt class. const prompt = new HaiKarate({ message: 'How many sprays do you want?', initial: 10 }); prompt.run() .then(answer => console.log('Sprays:', answer)) .catch(console.error); ``` If you want to be able to specify your prompt by `type` so that it may be used alongside other prompts, you will need to first create an instance of `Enquirer`. ```js const Enquirer = require('enquirer'); const enquirer = new Enquirer(); ``` Then use the `.register()` method to add your custom prompt. ```js enquirer.register('haikarate', HaiKarate); ``` Now you can do the following when defining "questions". ```js let spritzer = require('cologne-drone'); let answers = await enquirer.prompt([ { type: 'haikarate', name: 'cologne', message: 'How many sprays do you need?', initial: 10, async onSubmit(name, value) { await spritzer.activate(value); //<= activate drone return value; } } ]); ``` <br> ## ❯ Key Bindings ### All prompts These key combinations may be used with all prompts. | **command** | **description** | | -------------------------------- | -------------------------------------- | | <kbd>ctrl</kbd> + <kbd>c</kbd> | Cancel the prompt. | | <kbd>ctrl</kbd> + <kbd>g</kbd> | Reset the prompt to its initial state. | <br> ### Move cursor These combinations may be used on prompts that support user input (eg. [input prompt](#input-prompt), [password prompt](#password-prompt), and [invisible prompt](#invisible-prompt)). | **command** | **description** | | ------------------------------ | ---------------------------------------- | | <kbd>left</kbd> | Move the cursor back one character. | | <kbd>right</kbd> | Move the cursor forward one character. | | <kbd>ctrl</kbd> + <kbd>a</kbd> | Move cursor to the start of the line | | <kbd>ctrl</kbd> + <kbd>e</kbd> | Move cursor to the end of the line | | <kbd>ctrl</kbd> + <kbd>b</kbd> | Move cursor back one character | | <kbd>ctrl</kbd> + <kbd>f</kbd> | Move cursor forward one character | | <kbd>ctrl</kbd> + <kbd>x</kbd> | Toggle between first and cursor position | <br> ### Edit Input These key combinations may be used on prompts that support user input (eg. [input prompt](#input-prompt), [password prompt](#password-prompt), and [invisible prompt](#invisible-prompt)). | **command** | **description** | | ------------------------------ | ---------------------------------------- | | <kbd>ctrl</kbd> + <kbd>a</kbd> | Move cursor to the start of the line | | <kbd>ctrl</kbd> + <kbd>e</kbd> | Move cursor to the end of the line | | <kbd>ctrl</kbd> + <kbd>b</kbd> | Move cursor back one character | | <kbd>ctrl</kbd> + <kbd>f</kbd> | Move cursor forward one character | | <kbd>ctrl</kbd> + <kbd>x</kbd> | Toggle between first and cursor position | <br> | **command (Mac)** | **command (Windows)** | **description** | | ----------------------------------- | -------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------- | | <kbd>delete</kbd> | <kbd>backspace</kbd> | Delete one character to the left. | | <kbd>fn</kbd> + <kbd>delete</kbd> | <kbd>delete</kbd> | Delete one character to the right. | | <kbd>option</kbd> + <kbd>up</kbd> | <kbd>alt</kbd> + <kbd>up</kbd> | Scroll to the previous item in history ([Input prompt](#input-prompt) only, when [history is enabled](examples/input/option-history.js)). | | <kbd>option</kbd> + <kbd>down</kbd> | <kbd>alt</kbd> + <kbd>down</kbd> | Scroll to the next item in history ([Input prompt](#input-prompt) only, when [history is enabled](examples/input/option-history.js)). | ### Select choices These key combinations may be used on prompts that support _multiple_ choices, such as the [multiselect prompt](#multiselect-prompt), or the [select prompt](#select-prompt) when the `multiple` options is true. | **command** | **description** | | ----------------- | -------------------------------------------------------------------------------------------------------------------- | | <kbd>space</kbd> | Toggle the currently selected choice when `options.multiple` is true. | | <kbd>number</kbd> | Move the pointer to the choice at the given index. Also toggles the selected choice when `options.multiple` is true. | | <kbd>a</kbd> | Toggle all choices to be enabled or disabled. | | <kbd>i</kbd> | Invert the current selection of choices. | | <kbd>g</kbd> | Toggle the current choice group. | <br> ### Hide/show choices | **command** | **description** | | ------------------------------- | ---------------------------------------------- | | <kbd>fn</kbd> + <kbd>up</kbd> | Decrease the number of visible choices by one. | | <kbd>fn</kbd> + <kbd>down</kbd> | Increase the number of visible choices by one. | <br> ### Move/lock Pointer | **command** | **description** | | ---------------------------------- | -------------------------------------------------------------------------------------------------------------------- | | <kbd>number</kbd> | Move the pointer to the choice at the given index. Also toggles the selected choice when `options.multiple` is true. | | <kbd>up</kbd> | Move the pointer up. | | <kbd>down</kbd> | Move the pointer down. | | <kbd>ctrl</kbd> + <kbd>a</kbd> | Move the pointer to the first _visible_ choice. | | <kbd>ctrl</kbd> + <kbd>e</kbd> | Move the pointer to the last _visible_ choice. | | <kbd>shift</kbd> + <kbd>up</kbd> | Scroll up one choice without changing pointer position (locks the pointer while scrolling). | | <kbd>shift</kbd> + <kbd>down</kbd> | Scroll down one choice without changing pointer position (locks the pointer while scrolling). | <br> | **command (Mac)** | **command (Windows)** | **description** | | -------------------------------- | --------------------- | ---------------------------------------------------------- | | <kbd>fn</kbd> + <kbd>left</kbd> | <kbd>home</kbd> | Move the pointer to the first choice in the choices array. | | <kbd>fn</kbd> + <kbd>right</kbd> | <kbd>end</kbd> | Move the pointer to the last choice in the choices array. | <br> ## ❯ Release History Please see [CHANGELOG.md](CHANGELOG.md). ## ❯ Performance ### System specs MacBook Pro, Intel Core i7, 2.5 GHz, 16 GB. ### Load time Time it takes for the module to load the first time (average of 3 runs): ``` enquirer: 4.013ms inquirer: 286.717ms ``` <br> ## ❯ About <details> <summary><strong>Contributing</strong></summary> Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). ### Todo We're currently working on documentation for the following items. Please star and watch the repository for updates! * [ ] Customizing symbols * [ ] Customizing styles (palette) * [ ] Customizing rendered input * [ ] Customizing returned values * [ ] Customizing key bindings * [ ] Question validation * [ ] Choice validation * [ ] Skipping questions * [ ] Async choices * [ ] Async timers: loaders, spinners and other animations * [ ] Links to examples </details> <details> <summary><strong>Running Tests</strong></summary> Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` ```sh $ yarn && yarn test ``` </details> <details> <summary><strong>Building docs</strong></summary> _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` </details> #### Contributors | **Commits** | **Contributor** | | --- | --- | | 283 | [jonschlinkert](https://github.com/jonschlinkert) | | 82 | [doowb](https://github.com/doowb) | | 32 | [rajat-sr](https://github.com/rajat-sr) | | 20 | [318097](https://github.com/318097) | | 15 | [g-plane](https://github.com/g-plane) | | 12 | [pixelass](https://github.com/pixelass) | | 5 | [adityavyas611](https://github.com/adityavyas611) | | 5 | [satotake](https://github.com/satotake) | | 3 | [tunnckoCore](https://github.com/tunnckoCore) | | 3 | [Ovyerus](https://github.com/Ovyerus) | | 3 | [sw-yx](https://github.com/sw-yx) | | 2 | [DanielRuf](https://github.com/DanielRuf) | | 2 | [GabeL7r](https://github.com/GabeL7r) | | 1 | [AlCalzone](https://github.com/AlCalzone) | | 1 | [hipstersmoothie](https://github.com/hipstersmoothie) | | 1 | [danieldelcore](https://github.com/danieldelcore) | | 1 | [ImgBotApp](https://github.com/ImgBotApp) | | 1 | [jsonkao](https://github.com/jsonkao) | | 1 | [knpwrs](https://github.com/knpwrs) | | 1 | [yeskunall](https://github.com/yeskunall) | | 1 | [mischah](https://github.com/mischah) | | 1 | [renarsvilnis](https://github.com/renarsvilnis) | | 1 | [sbugert](https://github.com/sbugert) | | 1 | [stephencweiss](https://github.com/stephencweiss) | | 1 | [skellock](https://github.com/skellock) | | 1 | [whxaxes](https://github.com/whxaxes) | #### Author **Jon Schlinkert** * [GitHub Profile](https://github.com/jonschlinkert) * [Twitter Profile](https://twitter.com/jonschlinkert) * [LinkedIn Profile](https://linkedin.com/in/jonschlinkert) #### Credit Thanks to [derhuerst](https://github.com/derhuerst), creator of prompt libraries such as [prompt-skeleton](https://github.com/derhuerst/prompt-skeleton), which influenced some of the concepts we used in our prompts. #### License Copyright © 2018-present, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT License](LICENSE). # minizlib A fast zlib stream built on [minipass](http://npm.im/minipass) and Node.js's zlib binding. This module was created to serve the needs of [node-tar](http://npm.im/tar) and [minipass-fetch](http://npm.im/minipass-fetch). Brotli is supported in versions of node with a Brotli binding. ## How does this differ from the streams in `require('zlib')`? First, there are no convenience methods to compress or decompress a buffer. If you want those, use the built-in `zlib` module. This is only streams. That being said, Minipass streams to make it fairly easy to use as one-liners: `new zlib.Deflate().end(data).read()` will return the deflate compressed result. This module compresses and decompresses the data as fast as you feed it in. It is synchronous, and runs on the main process thread. Zlib and Brotli operations can be high CPU, but they're very fast, and doing it this way means much less bookkeeping and artificial deferral. Node's built in zlib streams are built on top of `stream.Transform`. They do the maximally safe thing with respect to consistent asynchrony, buffering, and backpressure. See [Minipass](http://npm.im/minipass) for more on the differences between Node.js core streams and Minipass streams, and the convenience methods provided by that class. ## Classes - Deflate - Inflate - Gzip - Gunzip - DeflateRaw - InflateRaw - Unzip - BrotliCompress (Node v10 and higher) - BrotliDecompress (Node v10 and higher) ## USAGE ```js const zlib = require('minizlib') const input = sourceOfCompressedData() const decode = new zlib.BrotliDecompress() const output = whereToWriteTheDecodedData() input.pipe(decode).pipe(output) ``` ## REPRODUCIBLE BUILDS To create reproducible gzip compressed files across different operating systems, set `portable: true` in the options. This causes minizlib to set the `OS` indicator in byte 9 of the extended gzip header to `0xFF` for 'unknown'. # safe-buffer [![travis][travis-image]][travis-url] [![npm][npm-image]][npm-url] [![downloads][downloads-image]][downloads-url] [![javascript style guide][standard-image]][standard-url] [travis-image]: https://img.shields.io/travis/feross/safe-buffer/master.svg [travis-url]: https://travis-ci.org/feross/safe-buffer [npm-image]: https://img.shields.io/npm/v/safe-buffer.svg [npm-url]: https://npmjs.org/package/safe-buffer [downloads-image]: https://img.shields.io/npm/dm/safe-buffer.svg [downloads-url]: https://npmjs.org/package/safe-buffer [standard-image]: https://img.shields.io/badge/code_style-standard-brightgreen.svg [standard-url]: https://standardjs.com #### Safer Node.js Buffer API **Use the new Node.js Buffer APIs (`Buffer.from`, `Buffer.alloc`, `Buffer.allocUnsafe`, `Buffer.allocUnsafeSlow`) in all versions of Node.js.** **Uses the built-in implementation when available.** ## install ``` npm install safe-buffer ``` ## usage The goal of this package is to provide a safe replacement for the node.js `Buffer`. It's a drop-in replacement for `Buffer`. You can use it by adding one `require` line to the top of your node.js modules: ```js var Buffer = require('safe-buffer').Buffer // Existing buffer code will continue to work without issues: new Buffer('hey', 'utf8') new Buffer([1, 2, 3], 'utf8') new Buffer(obj) new Buffer(16) // create an uninitialized buffer (potentially unsafe) // But you can use these new explicit APIs to make clear what you want: Buffer.from('hey', 'utf8') // convert from many types to a Buffer Buffer.alloc(16) // create a zero-filled buffer (safe) Buffer.allocUnsafe(16) // create an uninitialized buffer (potentially unsafe) ``` ## api ### Class Method: Buffer.from(array) <!-- YAML added: v3.0.0 --> * `array` {Array} Allocates a new `Buffer` using an `array` of octets. ```js const buf = Buffer.from([0x62,0x75,0x66,0x66,0x65,0x72]); // creates a new Buffer containing ASCII bytes // ['b','u','f','f','e','r'] ``` A `TypeError` will be thrown if `array` is not an `Array`. ### Class Method: Buffer.from(arrayBuffer[, byteOffset[, length]]) <!-- YAML added: v5.10.0 --> * `arrayBuffer` {ArrayBuffer} The `.buffer` property of a `TypedArray` or a `new ArrayBuffer()` * `byteOffset` {Number} Default: `0` * `length` {Number} Default: `arrayBuffer.length - byteOffset` When passed a reference to the `.buffer` property of a `TypedArray` instance, the newly created `Buffer` will share the same allocated memory as the TypedArray. ```js const arr = new Uint16Array(2); arr[0] = 5000; arr[1] = 4000; const buf = Buffer.from(arr.buffer); // shares the memory with arr; console.log(buf); // Prints: <Buffer 88 13 a0 0f> // changing the TypedArray changes the Buffer also arr[1] = 6000; console.log(buf); // Prints: <Buffer 88 13 70 17> ``` The optional `byteOffset` and `length` arguments specify a memory range within the `arrayBuffer` that will be shared by the `Buffer`. ```js const ab = new ArrayBuffer(10); const buf = Buffer.from(ab, 0, 2); console.log(buf.length); // Prints: 2 ``` A `TypeError` will be thrown if `arrayBuffer` is not an `ArrayBuffer`. ### Class Method: Buffer.from(buffer) <!-- YAML added: v3.0.0 --> * `buffer` {Buffer} Copies the passed `buffer` data onto a new `Buffer` instance. ```js const buf1 = Buffer.from('buffer'); const buf2 = Buffer.from(buf1); buf1[0] = 0x61; console.log(buf1.toString()); // 'auffer' console.log(buf2.toString()); // 'buffer' (copy is not changed) ``` A `TypeError` will be thrown if `buffer` is not a `Buffer`. ### Class Method: Buffer.from(str[, encoding]) <!-- YAML added: v5.10.0 --> * `str` {String} String to encode. * `encoding` {String} Encoding to use, Default: `'utf8'` Creates a new `Buffer` containing the given JavaScript string `str`. If provided, the `encoding` parameter identifies the character encoding. If not provided, `encoding` defaults to `'utf8'`. ```js const buf1 = Buffer.from('this is a tést'); console.log(buf1.toString()); // prints: this is a tést console.log(buf1.toString('ascii')); // prints: this is a tC)st const buf2 = Buffer.from('7468697320697320612074c3a97374', 'hex'); console.log(buf2.toString()); // prints: this is a tést ``` A `TypeError` will be thrown if `str` is not a string. ### Class Method: Buffer.alloc(size[, fill[, encoding]]) <!-- YAML added: v5.10.0 --> * `size` {Number} * `fill` {Value} Default: `undefined` * `encoding` {String} Default: `utf8` Allocates a new `Buffer` of `size` bytes. If `fill` is `undefined`, the `Buffer` will be *zero-filled*. ```js const buf = Buffer.alloc(5); console.log(buf); // <Buffer 00 00 00 00 00> ``` The `size` must be less than or equal to the value of `require('buffer').kMaxLength` (on 64-bit architectures, `kMaxLength` is `(2^31)-1`). Otherwise, a [`RangeError`][] is thrown. A zero-length Buffer will be created if a `size` less than or equal to 0 is specified. If `fill` is specified, the allocated `Buffer` will be initialized by calling `buf.fill(fill)`. See [`buf.fill()`][] for more information. ```js const buf = Buffer.alloc(5, 'a'); console.log(buf); // <Buffer 61 61 61 61 61> ``` If both `fill` and `encoding` are specified, the allocated `Buffer` will be initialized by calling `buf.fill(fill, encoding)`. For example: ```js const buf = Buffer.alloc(11, 'aGVsbG8gd29ybGQ=', 'base64'); console.log(buf); // <Buffer 68 65 6c 6c 6f 20 77 6f 72 6c 64> ``` Calling `Buffer.alloc(size)` can be significantly slower than the alternative `Buffer.allocUnsafe(size)` but ensures that the newly created `Buffer` instance contents will *never contain sensitive data*. A `TypeError` will be thrown if `size` is not a number. ### Class Method: Buffer.allocUnsafe(size) <!-- YAML added: v5.10.0 --> * `size` {Number} Allocates a new *non-zero-filled* `Buffer` of `size` bytes. The `size` must be less than or equal to the value of `require('buffer').kMaxLength` (on 64-bit architectures, `kMaxLength` is `(2^31)-1`). Otherwise, a [`RangeError`][] is thrown. A zero-length Buffer will be created if a `size` less than or equal to 0 is specified. The underlying memory for `Buffer` instances created in this way is *not initialized*. The contents of the newly created `Buffer` are unknown and *may contain sensitive data*. Use [`buf.fill(0)`][] to initialize such `Buffer` instances to zeroes. ```js const buf = Buffer.allocUnsafe(5); console.log(buf); // <Buffer 78 e0 82 02 01> // (octets will be different, every time) buf.fill(0); console.log(buf); // <Buffer 00 00 00 00 00> ``` A `TypeError` will be thrown if `size` is not a number. Note that the `Buffer` module pre-allocates an internal `Buffer` instance of size `Buffer.poolSize` that is used as a pool for the fast allocation of new `Buffer` instances created using `Buffer.allocUnsafe(size)` (and the deprecated `new Buffer(size)` constructor) only when `size` is less than or equal to `Buffer.poolSize >> 1` (floor of `Buffer.poolSize` divided by two). The default value of `Buffer.poolSize` is `8192` but can be modified. Use of this pre-allocated internal memory pool is a key difference between calling `Buffer.alloc(size, fill)` vs. `Buffer.allocUnsafe(size).fill(fill)`. Specifically, `Buffer.alloc(size, fill)` will *never* use the internal Buffer pool, while `Buffer.allocUnsafe(size).fill(fill)` *will* use the internal Buffer pool if `size` is less than or equal to half `Buffer.poolSize`. The difference is subtle but can be important when an application requires the additional performance that `Buffer.allocUnsafe(size)` provides. ### Class Method: Buffer.allocUnsafeSlow(size) <!-- YAML added: v5.10.0 --> * `size` {Number} Allocates a new *non-zero-filled* and non-pooled `Buffer` of `size` bytes. The `size` must be less than or equal to the value of `require('buffer').kMaxLength` (on 64-bit architectures, `kMaxLength` is `(2^31)-1`). Otherwise, a [`RangeError`][] is thrown. A zero-length Buffer will be created if a `size` less than or equal to 0 is specified. The underlying memory for `Buffer` instances created in this way is *not initialized*. The contents of the newly created `Buffer` are unknown and *may contain sensitive data*. Use [`buf.fill(0)`][] to initialize such `Buffer` instances to zeroes. When using `Buffer.allocUnsafe()` to allocate new `Buffer` instances, allocations under 4KB are, by default, sliced from a single pre-allocated `Buffer`. This allows applications to avoid the garbage collection overhead of creating many individually allocated Buffers. This approach improves both performance and memory usage by eliminating the need to track and cleanup as many `Persistent` objects. However, in the case where a developer may need to retain a small chunk of memory from a pool for an indeterminate amount of time, it may be appropriate to create an un-pooled Buffer instance using `Buffer.allocUnsafeSlow()` then copy out the relevant bits. ```js // need to keep around a few small chunks of memory const store = []; socket.on('readable', () => { const data = socket.read(); // allocate for retained data const sb = Buffer.allocUnsafeSlow(10); // copy the data into the new allocation data.copy(sb, 0, 0, 10); store.push(sb); }); ``` Use of `Buffer.allocUnsafeSlow()` should be used only as a last resort *after* a developer has observed undue memory retention in their applications. A `TypeError` will be thrown if `size` is not a number. ### All the Rest The rest of the `Buffer` API is exactly the same as in node.js. [See the docs](https://nodejs.org/api/buffer.html). ## Related links - [Node.js issue: Buffer(number) is unsafe](https://github.com/nodejs/node/issues/4660) - [Node.js Enhancement Proposal: Buffer.from/Buffer.alloc/Buffer.zalloc/Buffer() soft-deprecate](https://github.com/nodejs/node-eps/pull/4) ## Why is `Buffer` unsafe? Today, the node.js `Buffer` constructor is overloaded to handle many different argument types like `String`, `Array`, `Object`, `TypedArrayView` (`Uint8Array`, etc.), `ArrayBuffer`, and also `Number`. The API is optimized for convenience: you can throw any type at it, and it will try to do what you want. Because the Buffer constructor is so powerful, you often see code like this: ```js // Convert UTF-8 strings to hex function toHex (str) { return new Buffer(str).toString('hex') } ``` ***But what happens if `toHex` is called with a `Number` argument?*** ### Remote Memory Disclosure If an attacker can make your program call the `Buffer` constructor with a `Number` argument, then they can make it allocate uninitialized memory from the node.js process. This could potentially disclose TLS private keys, user data, or database passwords. When the `Buffer` constructor is passed a `Number` argument, it returns an **UNINITIALIZED** block of memory of the specified `size`. When you create a `Buffer` like this, you **MUST** overwrite the contents before returning it to the user. From the [node.js docs](https://nodejs.org/api/buffer.html#buffer_new_buffer_size): > `new Buffer(size)` > > - `size` Number > > The underlying memory for `Buffer` instances created in this way is not initialized. > **The contents of a newly created `Buffer` are unknown and could contain sensitive > data.** Use `buf.fill(0)` to initialize a Buffer to zeroes. (Emphasis our own.) Whenever the programmer intended to create an uninitialized `Buffer` you often see code like this: ```js var buf = new Buffer(16) // Immediately overwrite the uninitialized buffer with data from another buffer for (var i = 0; i < buf.length; i++) { buf[i] = otherBuf[i] } ``` ### Would this ever be a problem in real code? Yes. It's surprisingly common to forget to check the type of your variables in a dynamically-typed language like JavaScript. Usually the consequences of assuming the wrong type is that your program crashes with an uncaught exception. But the failure mode for forgetting to check the type of arguments to the `Buffer` constructor is more catastrophic. Here's an example of a vulnerable service that takes a JSON payload and converts it to hex: ```js // Take a JSON payload {str: "some string"} and convert it to hex var server = http.createServer(function (req, res) { var data = '' req.setEncoding('utf8') req.on('data', function (chunk) { data += chunk }) req.on('end', function () { var body = JSON.parse(data) res.end(new Buffer(body.str).toString('hex')) }) }) server.listen(8080) ``` In this example, an http client just has to send: ```json { "str": 1000 } ``` and it will get back 1,000 bytes of uninitialized memory from the server. This is a very serious bug. It's similar in severity to the [the Heartbleed bug](http://heartbleed.com/) that allowed disclosure of OpenSSL process memory by remote attackers. ### Which real-world packages were vulnerable? #### [`bittorrent-dht`](https://www.npmjs.com/package/bittorrent-dht) [Mathias Buus](https://github.com/mafintosh) and I ([Feross Aboukhadijeh](http://feross.org/)) found this issue in one of our own packages, [`bittorrent-dht`](https://www.npmjs.com/package/bittorrent-dht). The bug would allow anyone on the internet to send a series of messages to a user of `bittorrent-dht` and get them to reveal 20 bytes at a time of uninitialized memory from the node.js process. Here's [the commit](https://github.com/feross/bittorrent-dht/commit/6c7da04025d5633699800a99ec3fbadf70ad35b8) that fixed it. We released a new fixed version, created a [Node Security Project disclosure](https://nodesecurity.io/advisories/68), and deprecated all vulnerable versions on npm so users will get a warning to upgrade to a newer version. #### [`ws`](https://www.npmjs.com/package/ws) That got us wondering if there were other vulnerable packages. Sure enough, within a short period of time, we found the same issue in [`ws`](https://www.npmjs.com/package/ws), the most popular WebSocket implementation in node.js. If certain APIs were called with `Number` parameters instead of `String` or `Buffer` as expected, then uninitialized server memory would be disclosed to the remote peer. These were the vulnerable methods: ```js socket.send(number) socket.ping(number) socket.pong(number) ``` Here's a vulnerable socket server with some echo functionality: ```js server.on('connection', function (socket) { socket.on('message', function (message) { message = JSON.parse(message) if (message.type === 'echo') { socket.send(message.data) // send back the user's message } }) }) ``` `socket.send(number)` called on the server, will disclose server memory. Here's [the release](https://github.com/websockets/ws/releases/tag/1.0.1) where the issue was fixed, with a more detailed explanation. Props to [Arnout Kazemier](https://github.com/3rd-Eden) for the quick fix. Here's the [Node Security Project disclosure](https://nodesecurity.io/advisories/67). ### What's the solution? It's important that node.js offers a fast way to get memory otherwise performance-critical applications would needlessly get a lot slower. But we need a better way to *signal our intent* as programmers. **When we want uninitialized memory, we should request it explicitly.** Sensitive functionality should not be packed into a developer-friendly API that loosely accepts many different types. This type of API encourages the lazy practice of passing variables in without checking the type very carefully. #### A new API: `Buffer.allocUnsafe(number)` The functionality of creating buffers with uninitialized memory should be part of another API. We propose `Buffer.allocUnsafe(number)`. This way, it's not part of an API that frequently gets user input of all sorts of different types passed into it. ```js var buf = Buffer.allocUnsafe(16) // careful, uninitialized memory! // Immediately overwrite the uninitialized buffer with data from another buffer for (var i = 0; i < buf.length; i++) { buf[i] = otherBuf[i] } ``` ### How do we fix node.js core? We sent [a PR to node.js core](https://github.com/nodejs/node/pull/4514) (merged as `semver-major`) which defends against one case: ```js var str = 16 new Buffer(str, 'utf8') ``` In this situation, it's implied that the programmer intended the first argument to be a string, since they passed an encoding as a second argument. Today, node.js will allocate uninitialized memory in the case of `new Buffer(number, encoding)`, which is probably not what the programmer intended. But this is only a partial solution, since if the programmer does `new Buffer(variable)` (without an `encoding` parameter) there's no way to know what they intended. If `variable` is sometimes a number, then uninitialized memory will sometimes be returned. ### What's the real long-term fix? We could deprecate and remove `new Buffer(number)` and use `Buffer.allocUnsafe(number)` when we need uninitialized memory. But that would break 1000s of packages. ~~We believe the best solution is to:~~ ~~1. Change `new Buffer(number)` to return safe, zeroed-out memory~~ ~~2. Create a new API for creating uninitialized Buffers. We propose: `Buffer.allocUnsafe(number)`~~ #### Update We now support adding three new APIs: - `Buffer.from(value)` - convert from any type to a buffer - `Buffer.alloc(size)` - create a zero-filled buffer - `Buffer.allocUnsafe(size)` - create an uninitialized buffer with given size This solves the core problem that affected `ws` and `bittorrent-dht` which is `Buffer(variable)` getting tricked into taking a number argument. This way, existing code continues working and the impact on the npm ecosystem will be minimal. Over time, npm maintainers can migrate performance-critical code to use `Buffer.allocUnsafe(number)` instead of `new Buffer(number)`. ### Conclusion We think there's a serious design issue with the `Buffer` API as it exists today. It promotes insecure software by putting high-risk functionality into a convenient API with friendly "developer ergonomics". This wasn't merely a theoretical exercise because we found the issue in some of the most popular npm packages. Fortunately, there's an easy fix that can be applied today. Use `safe-buffer` in place of `buffer`. ```js var Buffer = require('safe-buffer').Buffer ``` Eventually, we hope that node.js core can switch to this new, safer behavior. We believe the impact on the ecosystem would be minimal since it's not a breaking change. Well-maintained, popular packages would be updated to use `Buffer.alloc` quickly, while older, insecure packages would magically become safe from this attack vector. ## links - [Node.js PR: buffer: throw if both length and enc are passed](https://github.com/nodejs/node/pull/4514) - [Node Security Project disclosure for `ws`](https://nodesecurity.io/advisories/67) - [Node Security Project disclosure for`bittorrent-dht`](https://nodesecurity.io/advisories/68) ## credit The original issues in `bittorrent-dht` ([disclosure](https://nodesecurity.io/advisories/68)) and `ws` ([disclosure](https://nodesecurity.io/advisories/67)) were discovered by [Mathias Buus](https://github.com/mafintosh) and [Feross Aboukhadijeh](http://feross.org/). Thanks to [Adam Baldwin](https://github.com/evilpacket) for helping disclose these issues and for his work running the [Node Security Project](https://nodesecurity.io/). Thanks to [John Hiesey](https://github.com/jhiesey) for proofreading this README and auditing the code. ## license MIT. Copyright (C) [Feross Aboukhadijeh](http://feross.org) [Build]: http://img.shields.io/travis/litejs/natural-compare-lite.png [Coverage]: http://img.shields.io/coveralls/litejs/natural-compare-lite.png [1]: https://travis-ci.org/litejs/natural-compare-lite [2]: https://coveralls.io/r/litejs/natural-compare-lite [npm package]: https://npmjs.org/package/natural-compare-lite [GitHub repo]: https://github.com/litejs/natural-compare-lite @version 1.4.0 @date 2015-10-26 @stability 3 - Stable Natural Compare &ndash; [![Build][]][1] [![Coverage][]][2] =============== Compare strings containing a mix of letters and numbers in the way a human being would in sort order. This is described as a "natural ordering". ```text Standard sorting: Natural order sorting: img1.png img1.png img10.png img2.png img12.png img10.png img2.png img12.png ``` String.naturalCompare returns a number indicating whether a reference string comes before or after or is the same as the given string in sort order. Use it with builtin sort() function. ### Installation - In browser ```html <script src=min.natural-compare.js></script> ``` - In node.js: `npm install natural-compare-lite` ```javascript require("natural-compare-lite") ``` ### Usage ```javascript // Simple case sensitive example var a = ["z1.doc", "z10.doc", "z17.doc", "z2.doc", "z23.doc", "z3.doc"]; a.sort(String.naturalCompare); // ["z1.doc", "z2.doc", "z3.doc", "z10.doc", "z17.doc", "z23.doc"] // Use wrapper function for case insensitivity a.sort(function(a, b){ return String.naturalCompare(a.toLowerCase(), b.toLowerCase()); }) // In most cases we want to sort an array of objects var a = [ {"street":"350 5th Ave", "room":"A-1021"} , {"street":"350 5th Ave", "room":"A-21046-b"} ]; // sort by street, then by room a.sort(function(a, b){ return String.naturalCompare(a.street, b.street) || String.naturalCompare(a.room, b.room); }) // When text transformation is needed (eg toLowerCase()), // it is best for performance to keep // transformed key in that object. // There are no need to do text transformation // on each comparision when sorting. var a = [ {"make":"Audi", "model":"A6"} , {"make":"Kia", "model":"Rio"} ]; // sort by make, then by model a.map(function(car){ car.sort_key = (car.make + " " + car.model).toLowerCase(); }) a.sort(function(a, b){ return String.naturalCompare(a.sort_key, b.sort_key); }) ``` - Works well with dates in ISO format eg "Rev 2012-07-26.doc". ### Custom alphabet It is possible to configure a custom alphabet to achieve a desired order. ```javascript // Estonian alphabet String.alphabet = "ABDEFGHIJKLMNOPRSŠZŽTUVÕÄÖÜXYabdefghijklmnoprsšzžtuvõäöüxy" ["t", "z", "x", "õ"].sort(String.naturalCompare) // ["z", "t", "õ", "x"] // Russian alphabet String.alphabet = "АБВГДЕЁЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдеёжзийклмнопрстуфхцчшщъыьэюя" ["Ё", "А", "Б"].sort(String.naturalCompare) // ["А", "Б", "Ё"] ``` External links -------------- - [GitHub repo][https://github.com/litejs/natural-compare-lite] - [jsperf test](http://jsperf.com/natural-sort-2/12) Licence ------- Copyright (c) 2012-2015 Lauri Rooden &lt;lauri@rooden.ee&gt; [The MIT License](http://lauri.rooden.ee/mit-license.txt) # json-schema-traverse Traverse JSON Schema passing each schema object to callback [](https://travis-ci.org/epoberezkin/json-schema-traverse) [](https://www.npmjs.com/package/json-schema-traverse) [](https://coveralls.io/github/epoberezkin/json-schema-traverse?branch=master) ## Install ``` npm install json-schema-traverse ``` ## Usage ```javascript const traverse = require('json-schema-traverse'); const schema = { properties: { foo: {type: 'string'}, bar: {type: 'integer'} } }; traverse(schema, {cb}); // cb is called 3 times with: // 1. root schema // 2. {type: 'string'} // 3. {type: 'integer'} // Or: traverse(schema, {cb: {pre, post}}); // pre is called 3 times with: // 1. root schema // 2. {type: 'string'} // 3. {type: 'integer'} // // post is called 3 times with: // 1. {type: 'string'} // 2. {type: 'integer'} // 3. root schema ``` Callback function `cb` is called for each schema object (not including draft-06 boolean schemas), including the root schema, in pre-order traversal. Schema references ($ref) are not resolved, they are passed as is. Alternatively, you can pass a `{pre, post}` object as `cb`, and then `pre` will be called before traversing child elements, and `post` will be called after all child elements have been traversed. Callback is passed these parameters: - _schema_: the current schema object - _JSON pointer_: from the root schema to the current schema object - _root schema_: the schema passed to `traverse` object - _parent JSON pointer_: from the root schema to the parent schema object (see below) - _parent keyword_: the keyword inside which this schema appears (e.g. `properties`, `anyOf`, etc.) - _parent schema_: not necessarily parent object/array; in the example above the parent schema for `{type: 'string'}` is the root schema - _index/property_: index or property name in the array/object containing multiple schemas; in the example above for `{type: 'string'}` the property name is `'foo'` ## Traverse objects in all unknown keywords ```javascript const traverse = require('json-schema-traverse'); const schema = { mySchema: { minimum: 1, maximum: 2 } }; traverse(schema, {allKeys: true, cb}); // cb is called 2 times with: // 1. root schema // 2. mySchema ``` Without option `allKeys: true` callback will be called only with root schema. ## License [MIT](https://github.com/epoberezkin/json-schema-traverse/blob/master/LICENSE) # axios [](https://www.npmjs.org/package/axios) [](https://travis-ci.org/axios/axios) [](https://coveralls.io/r/mzabriskie/axios) [](https://packagephobia.now.sh/result?p=axios) [](http://npm-stat.com/charts.html?package=axios) [](https://gitter.im/mzabriskie/axios) [](https://www.codetriage.com/axios/axios) Promise based HTTP client for the browser and node.js ## Features - Make [XMLHttpRequests](https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest) from the browser - Make [http](http://nodejs.org/api/http.html) requests from node.js - Supports the [Promise](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise) API - Intercept request and response - Transform request and response data - Cancel requests - Automatic transforms for JSON data - Client side support for protecting against [XSRF](http://en.wikipedia.org/wiki/Cross-site_request_forgery) ## Browser Support  |  |  |  |  |  | --- | --- | --- | --- | --- | --- | Latest ✔ | Latest ✔ | Latest ✔ | Latest ✔ | Latest ✔ | 11 ✔ | [](https://saucelabs.com/u/axios) ## Installing Using npm: ```bash $ npm install axios ``` Using bower: ```bash $ bower install axios ``` Using yarn: ```bash $ yarn add axios ``` Using cdn: ```html <script src="https://unpkg.com/axios/dist/axios.min.js"></script> ``` ## Example ### note: CommonJS usage In order to gain the TypeScript typings (for intellisense / autocomplete) while using CommonJS imports with `require()` use the following approach: ```js const axios = require('axios').default; // axios.<method> will now provide autocomplete and parameter typings ``` Performing a `GET` request ```js const axios = require('axios'); // Make a request for a user with a given ID axios.get('/user?ID=12345') .then(function (response) { // handle success console.log(response); }) .catch(function (error) { // handle error console.log(error); }) .finally(function () { // always executed }); // Optionally the request above could also be done as axios.get('/user', { params: { ID: 12345 } }) .then(function (response) { console.log(response); }) .catch(function (error) { console.log(error); }) .finally(function () { // always executed }); // Want to use async/await? Add the `async` keyword to your outer function/method. async function getUser() { try { const response = await axios.get('/user?ID=12345'); console.log(response); } catch (error) { console.error(error); } } ``` > **NOTE:** `async/await` is part of ECMAScript 2017 and is not supported in Internet > Explorer and older browsers, so use with caution. Performing a `POST` request ```js axios.post('/user', { firstName: 'Fred', lastName: 'Flintstone' }) .then(function (response) { console.log(response); }) .catch(function (error) { console.log(error); }); ``` Performing multiple concurrent requests ```js function getUserAccount() { return axios.get('/user/12345'); } function getUserPermissions() { return axios.get('/user/12345/permissions'); } axios.all([getUserAccount(), getUserPermissions()]) .then(axios.spread(function (acct, perms) { // Both requests are now complete })); ``` ## axios API Requests can be made by passing the relevant config to `axios`. ##### axios(config) ```js // Send a POST request axios({ method: 'post', url: '/user/12345', data: { firstName: 'Fred', lastName: 'Flintstone' } }); ``` ```js // GET request for remote image axios({ method: 'get', url: 'http://bit.ly/2mTM3nY', responseType: 'stream' }) .then(function (response) { response.data.pipe(fs.createWriteStream('ada_lovelace.jpg')) }); ``` ##### axios(url[, config]) ```js // Send a GET request (default method) axios('/user/12345'); ``` ### Request method aliases For convenience aliases have been provided for all supported request methods. ##### axios.request(config) ##### axios.get(url[, config]) ##### axios.delete(url[, config]) ##### axios.head(url[, config]) ##### axios.options(url[, config]) ##### axios.post(url[, data[, config]]) ##### axios.put(url[, data[, config]]) ##### axios.patch(url[, data[, config]]) ###### NOTE When using the alias methods `url`, `method`, and `data` properties don't need to be specified in config. ### Concurrency Helper functions for dealing with concurrent requests. ##### axios.all(iterable) ##### axios.spread(callback) ### Creating an instance You can create a new instance of axios with a custom config. ##### axios.create([config]) ```js const instance = axios.create({ baseURL: 'https://some-domain.com/api/', timeout: 1000, headers: {'X-Custom-Header': 'foobar'} }); ``` ### Instance methods The available instance methods are listed below. The specified config will be merged with the instance config. ##### axios#request(config) ##### axios#get(url[, config]) ##### axios#delete(url[, config]) ##### axios#head(url[, config]) ##### axios#options(url[, config]) ##### axios#post(url[, data[, config]]) ##### axios#put(url[, data[, config]]) ##### axios#patch(url[, data[, config]]) ##### axios#getUri([config]) ## Request Config These are the available config options for making requests. Only the `url` is required. Requests will default to `GET` if `method` is not specified. ```js { // `url` is the server URL that will be used for the request url: '/user', // `method` is the request method to be used when making the request method: 'get', // default // `baseURL` will be prepended to `url` unless `url` is absolute. // It can be convenient to set `baseURL` for an instance of axios to pass relative URLs // to methods of that instance. baseURL: 'https://some-domain.com/api/', // `transformRequest` allows changes to the request data before it is sent to the server // This is only applicable for request methods 'PUT', 'POST', 'PATCH' and 'DELETE' // The last function in the array must return a string or an instance of Buffer, ArrayBuffer, // FormData or Stream // You may modify the headers object. transformRequest: [function (data, headers) { // Do whatever you want to transform the data return data; }], // `transformResponse` allows changes to the response data to be made before // it is passed to then/catch transformResponse: [function (data) { // Do whatever you want to transform the data return data; }], // `headers` are custom headers to be sent headers: {'X-Requested-With': 'XMLHttpRequest'}, // `params` are the URL parameters to be sent with the request // Must be a plain object or a URLSearchParams object params: { ID: 12345 }, // `paramsSerializer` is an optional function in charge of serializing `params` // (e.g. https://www.npmjs.com/package/qs, http://api.jquery.com/jquery.param/) paramsSerializer: function (params) { return Qs.stringify(params, {arrayFormat: 'brackets'}) }, // `data` is the data to be sent as the request body // Only applicable for request methods 'PUT', 'POST', and 'PATCH' // When no `transformRequest` is set, must be of one of the following types: // - string, plain object, ArrayBuffer, ArrayBufferView, URLSearchParams // - Browser only: FormData, File, Blob // - Node only: Stream, Buffer data: { firstName: 'Fred' }, // syntax alternative to send data into the body // method post // only the value is sent, not the key data: 'Country=Brasil&City=Belo Horizonte', // `timeout` specifies the number of milliseconds before the request times out. // If the request takes longer than `timeout`, the request will be aborted. timeout: 1000, // default is `0` (no timeout) // `withCredentials` indicates whether or not cross-site Access-Control requests // should be made using credentials withCredentials: false, // default // `adapter` allows custom handling of requests which makes testing easier. // Return a promise and supply a valid response (see lib/adapters/README.md). adapter: function (config) { /* ... */ }, // `auth` indicates that HTTP Basic auth should be used, and supplies credentials. // This will set an `Authorization` header, overwriting any existing // `Authorization` custom headers you have set using `headers`. // Please note that only HTTP Basic auth is configurable through this parameter. // For Bearer tokens and such, use `Authorization` custom headers instead. auth: { username: 'janedoe', password: 's00pers3cret' }, // `responseType` indicates the type of data that the server will respond with // options are: 'arraybuffer', 'document', 'json', 'text', 'stream' // browser only: 'blob' responseType: 'json', // default // `responseEncoding` indicates encoding to use for decoding responses // Note: Ignored for `responseType` of 'stream' or client-side requests responseEncoding: 'utf8', // default // `xsrfCookieName` is the name of the cookie to use as a value for xsrf token xsrfCookieName: 'XSRF-TOKEN', // default // `xsrfHeaderName` is the name of the http header that carries the xsrf token value xsrfHeaderName: 'X-XSRF-TOKEN', // default // `onUploadProgress` allows handling of progress events for uploads onUploadProgress: function (progressEvent) { // Do whatever you want with the native progress event }, // `onDownloadProgress` allows handling of progress events for downloads onDownloadProgress: function (progressEvent) { // Do whatever you want with the native progress event }, // `maxContentLength` defines the max size of the http response content in bytes allowed maxContentLength: 2000, // `validateStatus` defines whether to resolve or reject the promise for a given // HTTP response status code. If `validateStatus` returns `true` (or is set to `null` // or `undefined`), the promise will be resolved; otherwise, the promise will be // rejected. validateStatus: function (status) { return status >= 200 && status < 300; // default }, // `maxRedirects` defines the maximum number of redirects to follow in node.js. // If set to 0, no redirects will be followed. maxRedirects: 5, // default // `socketPath` defines a UNIX Socket to be used in node.js. // e.g. '/var/run/docker.sock' to send requests to the docker daemon. // Only either `socketPath` or `proxy` can be specified. // If both are specified, `socketPath` is used. socketPath: null, // default // `httpAgent` and `httpsAgent` define a custom agent to be used when performing http // and https requests, respectively, in node.js. This allows options to be added like // `keepAlive` that are not enabled by default. httpAgent: new http.Agent({ keepAlive: true }), httpsAgent: new https.Agent({ keepAlive: true }), // 'proxy' defines the hostname and port of the proxy server. // You can also define your proxy using the conventional `http_proxy` and // `https_proxy` environment variables. If you are using environment variables // for your proxy configuration, you can also define a `no_proxy` environment // variable as a comma-separated list of domains that should not be proxied. // Use `false` to disable proxies, ignoring environment variables. // `auth` indicates that HTTP Basic auth should be used to connect to the proxy, and // supplies credentials. // This will set an `Proxy-Authorization` header, overwriting any existing // `Proxy-Authorization` custom headers you have set using `headers`. proxy: { host: '127.0.0.1', port: 9000, auth: { username: 'mikeymike', password: 'rapunz3l' } }, // `cancelToken` specifies a cancel token that can be used to cancel the request // (see Cancellation section below for details) cancelToken: new CancelToken(function (cancel) { }) } ``` ## Response Schema The response for a request contains the following information. ```js { // `data` is the response that was provided by the server data: {}, // `status` is the HTTP status code from the server response status: 200, // `statusText` is the HTTP status message from the server response statusText: 'OK', // `headers` the headers that the server responded with // All header names are lower cased headers: {}, // `config` is the config that was provided to `axios` for the request config: {}, // `request` is the request that generated this response // It is the last ClientRequest instance in node.js (in redirects) // and an XMLHttpRequest instance in the browser request: {} } ``` When using `then`, you will receive the response as follows: ```js axios.get('/user/12345') .then(function (response) { console.log(response.data); console.log(response.status); console.log(response.statusText); console.log(response.headers); console.log(response.config); }); ``` When using `catch`, or passing a [rejection callback](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/then) as second parameter of `then`, the response will be available through the `error` object as explained in the [Handling Errors](#handling-errors) section. ## Config Defaults You can specify config defaults that will be applied to every request. ### Global axios defaults ```js axios.defaults.baseURL = 'https://api.example.com'; axios.defaults.headers.common['Authorization'] = AUTH_TOKEN; axios.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded'; ``` ### Custom instance defaults ```js // Set config defaults when creating the instance const instance = axios.create({ baseURL: 'https://api.example.com' }); // Alter defaults after instance has been created instance.defaults.headers.common['Authorization'] = AUTH_TOKEN; ``` ### Config order of precedence Config will be merged with an order of precedence. The order is library defaults found in [lib/defaults.js](https://github.com/axios/axios/blob/master/lib/defaults.js#L28), then `defaults` property of the instance, and finally `config` argument for the request. The latter will take precedence over the former. Here's an example. ```js // Create an instance using the config defaults provided by the library // At this point the timeout config value is `0` as is the default for the library const instance = axios.create(); // Override timeout default for the library // Now all requests using this instance will wait 2.5 seconds before timing out instance.defaults.timeout = 2500; // Override timeout for this request as it's known to take a long time instance.get('/longRequest', { timeout: 5000 }); ``` ## Interceptors You can intercept requests or responses before they are handled by `then` or `catch`. ```js // Add a request interceptor axios.interceptors.request.use(function (config) { // Do something before request is sent return config; }, function (error) { // Do something with request error return Promise.reject(error); }); // Add a response interceptor axios.interceptors.response.use(function (response) { // Any status code that lie within the range of 2xx cause this function to trigger // Do something with response data return response; }, function (error) { // Any status codes that falls outside the range of 2xx cause this function to trigger // Do something with response error return Promise.reject(error); }); ``` If you need to remove an interceptor later you can. ```js const myInterceptor = axios.interceptors.request.use(function () {/*...*/}); axios.interceptors.request.eject(myInterceptor); ``` You can add interceptors to a custom instance of axios. ```js const instance = axios.create(); instance.interceptors.request.use(function () {/*...*/}); ``` ## Handling Errors ```js axios.get('/user/12345') .catch(function (error) { if (error.response) { // The request was made and the server responded with a status code // that falls out of the range of 2xx console.log(error.response.data); console.log(error.response.status); console.log(error.response.headers); } else if (error.request) { // The request was made but no response was received // `error.request` is an instance of XMLHttpRequest in the browser and an instance of // http.ClientRequest in node.js console.log(error.request); } else { // Something happened in setting up the request that triggered an Error console.log('Error', error.message); } console.log(error.config); }); ``` Using the `validateStatus` config option, you can define HTTP code(s) that should throw an error. ```js axios.get('/user/12345', { validateStatus: function (status) { return status < 500; // Reject only if the status code is greater than or equal to 500 } }) ``` Using `toJSON` you get an object with more information about the HTTP error. ```js axios.get('/user/12345') .catch(function (error) { console.log(error.toJSON()); }); ``` ## Cancellation You can cancel a request using a *cancel token*. > The axios cancel token API is based on the withdrawn [cancelable promises proposal](https://github.com/tc39/proposal-cancelable-promises). You can create a cancel token using the `CancelToken.source` factory as shown below: ```js const CancelToken = axios.CancelToken; const source = CancelToken.source(); axios.get('/user/12345', { cancelToken: source.token }).catch(function (thrown) { if (axios.isCancel(thrown)) { console.log('Request canceled', thrown.message); } else { // handle error } }); axios.post('/user/12345', { name: 'new name' }, { cancelToken: source.token }) // cancel the request (the message parameter is optional) source.cancel('Operation canceled by the user.'); ``` You can also create a cancel token by passing an executor function to the `CancelToken` constructor: ```js const CancelToken = axios.CancelToken; let cancel; axios.get('/user/12345', { cancelToken: new CancelToken(function executor(c) { // An executor function receives a cancel function as a parameter cancel = c; }) }); // cancel the request cancel(); ``` > Note: you can cancel several requests with the same cancel token. ## Using application/x-www-form-urlencoded format By default, axios serializes JavaScript objects to `JSON`. To send data in the `application/x-www-form-urlencoded` format instead, you can use one of the following options. ### Browser In a browser, you can use the [`URLSearchParams`](https://developer.mozilla.org/en-US/docs/Web/API/URLSearchParams) API as follows: ```js const params = new URLSearchParams(); params.append('param1', 'value1'); params.append('param2', 'value2'); axios.post('/foo', params); ``` > Note that `URLSearchParams` is not supported by all browsers (see [caniuse.com](http://www.caniuse.com/#feat=urlsearchparams)), but there is a [polyfill](https://github.com/WebReflection/url-search-params) available (make sure to polyfill the global environment). Alternatively, you can encode data using the [`qs`](https://github.com/ljharb/qs) library: ```js const qs = require('qs'); axios.post('/foo', qs.stringify({ 'bar': 123 })); ``` Or in another way (ES6), ```js import qs from 'qs'; const data = { 'bar': 123 }; const options = { method: 'POST', headers: { 'content-type': 'application/x-www-form-urlencoded' }, data: qs.stringify(data), url, }; axios(options); ``` ### Node.js In node.js, you can use the [`querystring`](https://nodejs.org/api/querystring.html) module as follows: ```js const querystring = require('querystring'); axios.post('http://something.com/', querystring.stringify({ foo: 'bar' })); ``` You can also use the [`qs`](https://github.com/ljharb/qs) library. ###### NOTE The `qs` library is preferable if you need to stringify nested objects, as the `querystring` method has known issues with that use case (https://github.com/nodejs/node-v0.x-archive/issues/1665). ## Semver Until axios reaches a `1.0` release, breaking changes will be released with a new minor version. For example `0.5.1`, and `0.5.4` will have the same API, but `0.6.0` will have breaking changes. ## Promises axios depends on a native ES6 Promise implementation to be [supported](http://caniuse.com/promises). If your environment doesn't support ES6 Promises, you can [polyfill](https://github.com/jakearchibald/es6-promise). ## TypeScript axios includes [TypeScript](http://typescriptlang.org) definitions. ```typescript import axios from 'axios'; axios.get('/user?ID=12345'); ``` ## Resources * [Changelog](https://github.com/axios/axios/blob/master/CHANGELOG.md) * [Upgrade Guide](https://github.com/axios/axios/blob/master/UPGRADE_GUIDE.md) * [Ecosystem](https://github.com/axios/axios/blob/master/ECOSYSTEM.md) * [Contributing Guide](https://github.com/axios/axios/blob/master/CONTRIBUTING.md) * [Code of Conduct](https://github.com/axios/axios/blob/master/CODE_OF_CONDUCT.md) ## Credits axios is heavily inspired by the [$http service](https://docs.angularjs.org/api/ng/service/$http) provided in [Angular](https://angularjs.org/). Ultimately axios is an effort to provide a standalone `$http`-like service for use outside of Angular. ## License [MIT](LICENSE) # fast-levenshtein - Levenshtein algorithm in Javascript [](http://travis-ci.org/hiddentao/fast-levenshtein) [](https://badge.fury.io/js/fast-levenshtein) [](https://www.npmjs.com/package/fast-levenshtein) [](https://twitter.com/hiddentao) An efficient Javascript implementation of the [Levenshtein algorithm](http://en.wikipedia.org/wiki/Levenshtein_distance) with locale-specific collator support. ## Features * Works in node.js and in the browser. * Better performance than other implementations by not needing to store the whole matrix ([more info](http://www.codeproject.com/Articles/13525/Fast-memory-efficient-Levenshtein-algorithm)). * Locale-sensitive string comparisions if needed. * Comprehensive test suite and performance benchmark. * Small: <1 KB minified and gzipped ## Installation ### node.js Install using [npm](http://npmjs.org/): ```bash $ npm install fast-levenshtein ``` ### Browser Using bower: ```bash $ bower install fast-levenshtein ``` If you are not using any module loader system then the API will then be accessible via the `window.Levenshtein` object. ## Examples **Default usage** ```javascript var levenshtein = require('fast-levenshtein'); var distance = levenshtein.get('back', 'book'); // 2 var distance = levenshtein.get('我愛你', '我叫你'); // 1 ``` **Locale-sensitive string comparisons** It supports using [Intl.Collator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Collator) for locale-sensitive string comparisons: ```javascript var levenshtein = require('fast-levenshtein'); levenshtein.get('mikailovitch', 'Mikhaïlovitch', { useCollator: true}); // 1 ``` ## Building and Testing To build the code and run the tests: ```bash $ npm install -g grunt-cli $ npm install $ npm run build ``` ## Performance _Thanks to [Titus Wormer](https://github.com/wooorm) for [encouraging me](https://github.com/hiddentao/fast-levenshtein/issues/1) to do this._ Benchmarked against other node.js levenshtein distance modules (on Macbook Air 2012, Core i7, 8GB RAM): ```bash Running suite Implementation comparison [benchmark/speed.js]... >> levenshtein-edit-distance x 234 ops/sec ±3.02% (73 runs sampled) >> levenshtein-component x 422 ops/sec ±4.38% (83 runs sampled) >> levenshtein-deltas x 283 ops/sec ±3.83% (78 runs sampled) >> natural x 255 ops/sec ±0.76% (88 runs sampled) >> levenshtein x 180 ops/sec ±3.55% (86 runs sampled) >> fast-levenshtein x 1,792 ops/sec ±2.72% (95 runs sampled) Benchmark done. Fastest test is fast-levenshtein at 4.2x faster than levenshtein-component ``` You can run this benchmark yourself by doing: ```bash $ npm install $ npm run build $ npm run benchmark ``` ## Contributing If you wish to submit a pull request please update and/or create new tests for any changes you make and ensure the grunt build passes. See [CONTRIBUTING.md](https://github.com/hiddentao/fast-levenshtein/blob/master/CONTRIBUTING.md) for details. ## License MIT - see [LICENSE.md](https://github.com/hiddentao/fast-levenshtein/blob/master/LICENSE.md) # to-regex-range [](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W8YFZ425KND68) [](https://www.npmjs.com/package/to-regex-range) [](https://npmjs.org/package/to-regex-range) [](https://npmjs.org/package/to-regex-range) [](https://travis-ci.org/micromatch/to-regex-range) > Pass two numbers, get a regex-compatible source string for matching ranges. Validated against more than 2.78 million test assertions. Please consider following this project's author, [Jon Schlinkert](https://github.com/jonschlinkert), and consider starring the project to show your :heart: and support. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save to-regex-range ``` <details> <summary><strong>What does this do?</strong></summary> <br> This libary generates the `source` string to be passed to `new RegExp()` for matching a range of numbers. **Example** ```js const toRegexRange = require('to-regex-range'); const regex = new RegExp(toRegexRange('15', '95')); ``` A string is returned so that you can do whatever you need with it before passing it to `new RegExp()` (like adding `^` or `$` boundaries, defining flags, or combining it another string). <br> </details> <details> <summary><strong>Why use this library?</strong></summary> <br> ### Convenience Creating regular expressions for matching numbers gets deceptively complicated pretty fast. For example, let's say you need a validation regex for matching part of a user-id, postal code, social security number, tax id, etc: * regex for matching `1` => `/1/` (easy enough) * regex for matching `1` through `5` => `/[1-5]/` (not bad...) * regex for matching `1` or `5` => `/(1|5)/` (still easy...) * regex for matching `1` through `50` => `/([1-9]|[1-4][0-9]|50)/` (uh-oh...) * regex for matching `1` through `55` => `/([1-9]|[1-4][0-9]|5[0-5])/` (no prob, I can do this...) * regex for matching `1` through `555` => `/([1-9]|[1-9][0-9]|[1-4][0-9]{2}|5[0-4][0-9]|55[0-5])/` (maybe not...) * regex for matching `0001` through `5555` => `/(0{3}[1-9]|0{2}[1-9][0-9]|0[1-9][0-9]{2}|[1-4][0-9]{3}|5[0-4][0-9]{2}|55[0-4][0-9]|555[0-5])/` (okay, I get the point!) The numbers are contrived, but they're also really basic. In the real world you might need to generate a regex on-the-fly for validation. **Learn more** If you're interested in learning more about [character classes](http://www.regular-expressions.info/charclass.html) and other regex features, I personally have always found [regular-expressions.info](http://www.regular-expressions.info/charclass.html) to be pretty useful. ### Heavily tested As of April 07, 2019, this library runs [>1m test assertions](./test/test.js) against generated regex-ranges to provide brute-force verification that results are correct. Tests run in ~280ms on my MacBook Pro, 2.5 GHz Intel Core i7. ### Optimized Generated regular expressions are optimized: * duplicate sequences and character classes are reduced using quantifiers * smart enough to use `?` conditionals when number(s) or range(s) can be positive or negative * uses fragment caching to avoid processing the same exact string more than once <br> </details> ## Usage Add this library to your javascript application with the following line of code ```js const toRegexRange = require('to-regex-range'); ``` The main export is a function that takes two integers: the `min` value and `max` value (formatted as strings or numbers). ```js const source = toRegexRange('15', '95'); //=> 1[5-9]|[2-8][0-9]|9[0-5] const regex = new RegExp(`^${source}$`); console.log(regex.test('14')); //=> false console.log(regex.test('50')); //=> true console.log(regex.test('94')); //=> true console.log(regex.test('96')); //=> false ``` ## Options ### options.capture **Type**: `boolean` **Deafault**: `undefined` Wrap the returned value in parentheses when there is more than one regex condition. Useful when you're dynamically generating ranges. ```js console.log(toRegexRange('-10', '10')); //=> -[1-9]|-?10|[0-9] console.log(toRegexRange('-10', '10', { capture: true })); //=> (-[1-9]|-?10|[0-9]) ``` ### options.shorthand **Type**: `boolean` **Deafault**: `undefined` Use the regex shorthand for `[0-9]`: ```js console.log(toRegexRange('0', '999999')); //=> [0-9]|[1-9][0-9]{1,5} console.log(toRegexRange('0', '999999', { shorthand: true })); //=> \d|[1-9]\d{1,5} ``` ### options.relaxZeros **Type**: `boolean` **Default**: `true` This option relaxes matching for leading zeros when when ranges are zero-padded. ```js const source = toRegexRange('-0010', '0010'); const regex = new RegExp(`^${source}$`); console.log(regex.test('-10')); //=> true console.log(regex.test('-010')); //=> true console.log(regex.test('-0010')); //=> true console.log(regex.test('10')); //=> true console.log(regex.test('010')); //=> true console.log(regex.test('0010')); //=> true ``` When `relaxZeros` is false, matching is strict: ```js const source = toRegexRange('-0010', '0010', { relaxZeros: false }); const regex = new RegExp(`^${source}$`); console.log(regex.test('-10')); //=> false console.log(regex.test('-010')); //=> false console.log(regex.test('-0010')); //=> true console.log(regex.test('10')); //=> false console.log(regex.test('010')); //=> false console.log(regex.test('0010')); //=> true ``` ## Examples | **Range** | **Result** | **Compile time** | | --- | --- | --- | | `toRegexRange(-10, 10)` | `-[1-9]\|-?10\|[0-9]` | _132μs_ | | `toRegexRange(-100, -10)` | `-1[0-9]\|-[2-9][0-9]\|-100` | _50μs_ | | `toRegexRange(-100, 100)` | `-[1-9]\|-?[1-9][0-9]\|-?100\|[0-9]` | _42μs_ | | `toRegexRange(001, 100)` | `0{0,2}[1-9]\|0?[1-9][0-9]\|100` | _109μs_ | | `toRegexRange(001, 555)` | `0{0,2}[1-9]\|0?[1-9][0-9]\|[1-4][0-9]{2}\|5[0-4][0-9]\|55[0-5]` | _51μs_ | | `toRegexRange(0010, 1000)` | `0{0,2}1[0-9]\|0{0,2}[2-9][0-9]\|0?[1-9][0-9]{2}\|1000` | _31μs_ | | `toRegexRange(1, 50)` | `[1-9]\|[1-4][0-9]\|50` | _24μs_ | | `toRegexRange(1, 55)` | `[1-9]\|[1-4][0-9]\|5[0-5]` | _23μs_ | | `toRegexRange(1, 555)` | `[1-9]\|[1-9][0-9]\|[1-4][0-9]{2}\|5[0-4][0-9]\|55[0-5]` | _30μs_ | | `toRegexRange(1, 5555)` | `[1-9]\|[1-9][0-9]{1,2}\|[1-4][0-9]{3}\|5[0-4][0-9]{2}\|55[0-4][0-9]\|555[0-5]` | _43μs_ | | `toRegexRange(111, 555)` | `11[1-9]\|1[2-9][0-9]\|[2-4][0-9]{2}\|5[0-4][0-9]\|55[0-5]` | _38μs_ | | `toRegexRange(29, 51)` | `29\|[34][0-9]\|5[01]` | _24μs_ | | `toRegexRange(31, 877)` | `3[1-9]\|[4-9][0-9]\|[1-7][0-9]{2}\|8[0-6][0-9]\|87[0-7]` | _32μs_ | | `toRegexRange(5, 5)` | `5` | _8μs_ | | `toRegexRange(5, 6)` | `5\|6` | _11μs_ | | `toRegexRange(1, 2)` | `1\|2` | _6μs_ | | `toRegexRange(1, 5)` | `[1-5]` | _15μs_ | | `toRegexRange(1, 10)` | `[1-9]\|10` | _22μs_ | | `toRegexRange(1, 100)` | `[1-9]\|[1-9][0-9]\|100` | _25μs_ | | `toRegexRange(1, 1000)` | `[1-9]\|[1-9][0-9]{1,2}\|1000` | _31μs_ | | `toRegexRange(1, 10000)` | `[1-9]\|[1-9][0-9]{1,3}\|10000` | _34μs_ | | `toRegexRange(1, 100000)` | `[1-9]\|[1-9][0-9]{1,4}\|100000` | _36μs_ | | `toRegexRange(1, 1000000)` | `[1-9]\|[1-9][0-9]{1,5}\|1000000` | _42μs_ | | `toRegexRange(1, 10000000)` | `[1-9]\|[1-9][0-9]{1,6}\|10000000` | _42μs_ | ## Heads up! **Order of arguments** When the `min` is larger than the `max`, values will be flipped to create a valid range: ```js toRegexRange('51', '29'); ``` Is effectively flipped to: ```js toRegexRange('29', '51'); //=> 29|[3-4][0-9]|5[0-1] ``` **Steps / increments** This library does not support steps (increments). A pr to add support would be welcome. ## History ### v2.0.0 - 2017-04-21 **New features** Adds support for zero-padding! ### v1.0.0 **Optimizations** Repeating ranges are now grouped using quantifiers. rocessing time is roughly the same, but the generated regex is much smaller, which should result in faster matching. ## Attribution Inspired by the python library [range-regex](https://github.com/dimka665/range-regex). ## About <details> <summary><strong>Contributing</strong></summary> Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). </details> <details> <summary><strong>Running Tests</strong></summary> Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` </details> <details> <summary><strong>Building docs</strong></summary> _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` </details> ### Related projects You might also be interested in these projects: * [expand-range](https://www.npmjs.com/package/expand-range): Fast, bash-like range expansion. Expand a range of numbers or letters, uppercase or lowercase. Used… [more](https://github.com/jonschlinkert/expand-range) | [homepage](https://github.com/jonschlinkert/expand-range "Fast, bash-like range expansion. Expand a range of numbers or letters, uppercase or lowercase. Used by micromatch.") * [fill-range](https://www.npmjs.com/package/fill-range): Fill in a range of numbers or letters, optionally passing an increment or `step` to… [more](https://github.com/jonschlinkert/fill-range) | [homepage](https://github.com/jonschlinkert/fill-range "Fill in a range of numbers or letters, optionally passing an increment or `step` to use, or create a regex-compatible range with `options.toRegex`") * [micromatch](https://www.npmjs.com/package/micromatch): Glob matching for javascript/node.js. A drop-in replacement and faster alternative to minimatch and multimatch. | [homepage](https://github.com/micromatch/micromatch "Glob matching for javascript/node.js. A drop-in replacement and faster alternative to minimatch and multimatch.") * [repeat-element](https://www.npmjs.com/package/repeat-element): Create an array by repeating the given value n times. | [homepage](https://github.com/jonschlinkert/repeat-element "Create an array by repeating the given value n times.") * [repeat-string](https://www.npmjs.com/package/repeat-string): Repeat the given string n times. Fastest implementation for repeating a string. | [homepage](https://github.com/jonschlinkert/repeat-string "Repeat the given string n times. Fastest implementation for repeating a string.") ### Contributors | **Commits** | **Contributor** | | --- | --- | | 63 | [jonschlinkert](https://github.com/jonschlinkert) | | 3 | [doowb](https://github.com/doowb) | | 2 | [realityking](https://github.com/realityking) | ### Author **Jon Schlinkert** * [GitHub Profile](https://github.com/jonschlinkert) * [Twitter Profile](https://twitter.com/jonschlinkert) * [LinkedIn Profile](https://linkedin.com/in/jonschlinkert) Please consider supporting me on Patreon, or [start your own Patreon page](https://patreon.com/invite/bxpbvm)! <a href="https://www.patreon.com/jonschlinkert"> <img src="https://c5.patreon.com/external/logo/become_a_patron_button@2x.png" height="50"> </a> ### License Copyright © 2019, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT License](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.8.0, on April 07, 2019._ <!-- -- This file is auto-generated from README_js.md. Changes should be made there. --> # uuid [](https://github.com/uuidjs/uuid/actions?query=workflow%3ACI) [](https://github.com/uuidjs/uuid/actions?query=workflow%3ABrowser) For the creation of [RFC4122](http://www.ietf.org/rfc/rfc4122.txt) UUIDs - **Complete** - Support for RFC4122 version 1, 3, 4, and 5 UUIDs - **Cross-platform** - Support for ... - CommonJS, [ECMAScript Modules](#ecmascript-modules) and [CDN builds](#cdn-builds) - Node 8, 10, 12, 14 - Chrome, Safari, Firefox, Edge, IE 11 browsers - Webpack and rollup.js module bundlers - [React Native / Expo](#react-native--expo) - **Secure** - Cryptographically-strong random values - **Small** - Zero-dependency, small footprint, plays nice with "tree shaking" packagers - **CLI** - Includes the [`uuid` command line](#command-line) utility **Upgrading from `uuid@3.x`?** Your code is probably okay, but check out [Upgrading From `uuid@3.x`](#upgrading-from-uuid3x) for details. ## Quickstart To create a random UUID... **1. Install** ```shell npm install uuid ``` **2. Create a UUID** (ES6 module syntax) ```javascript import { v4 as uuidv4 } from 'uuid'; uuidv4(); // ⇨ '9b1deb4d-3b7d-4bad-9bdd-2b0d7b3dcb6d' ``` ... or using CommonJS syntax: ```javascript const { v4: uuidv4 } = require('uuid'); uuidv4(); // ⇨ '1b9d6bcd-bbfd-4b2d-9b5d-ab8dfbbd4bed' ``` For timestamp UUIDs, namespace UUIDs, and other options read on ... ## API Summary | | | | | --- | --- | --- | | [`uuid.NIL`](#uuidnil) | The nil UUID string (all zeros) | New in `uuid@8.3` | | [`uuid.parse()`](#uuidparsestr) | Convert UUID string to array of bytes | New in `uuid@8.3` | | [`uuid.stringify()`](#uuidstringifyarr-offset) | Convert array of bytes to UUID string | New in `uuid@8.3` | | [`uuid.v1()`](#uuidv1options-buffer-offset) | Create a version 1 (timestamp) UUID | | | [`uuid.v3()`](#uuidv3name-namespace-buffer-offset) | Create a version 3 (namespace w/ MD5) UUID | | | [`uuid.v4()`](#uuidv4options-buffer-offset) | Create a version 4 (random) UUID | | | [`uuid.v5()`](#uuidv5name-namespace-buffer-offset) | Create a version 5 (namespace w/ SHA-1) UUID | | | [`uuid.validate()`](#uuidvalidatestr) | Test a string to see if it is a valid UUID | New in `uuid@8.3` | | [`uuid.version()`](#uuidversionstr) | Detect RFC version of a UUID | New in `uuid@8.3` | ## API ### uuid.NIL The nil UUID string (all zeros). Example: ```javascript import { NIL as NIL_UUID } from 'uuid'; NIL_UUID; // ⇨ '00000000-0000-0000-0000-000000000000' ``` ### uuid.parse(str) Convert UUID string to array of bytes | | | | --------- | ---------------------------------------- | | `str` | A valid UUID `String` | | _returns_ | `Uint8Array[16]` | | _throws_ | `TypeError` if `str` is not a valid UUID | Note: Ordering of values in the byte arrays used by `parse()` and `stringify()` follows the left &Rarr; right order of hex-pairs in UUID strings. As shown in the example below. Example: ```javascript import { parse as uuidParse } from 'uuid'; // Parse a UUID const bytes = uuidParse('6ec0bd7f-11c0-43da-975e-2a8ad9ebae0b'); // Convert to hex strings to show byte order (for documentation purposes) [...bytes].map((v) => v.toString(16).padStart(2, '0')); // ⇨ // [ // '6e', 'c0', 'bd', '7f', // '11', 'c0', '43', 'da', // '97', '5e', '2a', '8a', // 'd9', 'eb', 'ae', '0b' // ] ``` ### uuid.stringify(arr[, offset]) Convert array of bytes to UUID string | | | | -------------- | ---------------------------------------------------------------------------- | | `arr` | `Array`-like collection of 16 values (starting from `offset`) between 0-255. | | [`offset` = 0] | `Number` Starting index in the Array | | _returns_ | `String` | | _throws_ | `TypeError` if a valid UUID string cannot be generated | Note: Ordering of values in the byte arrays used by `parse()` and `stringify()` follows the left &Rarr; right order of hex-pairs in UUID strings. As shown in the example below. Example: ```javascript import { stringify as uuidStringify } from 'uuid'; const uuidBytes = [ 0x6e, 0xc0, 0xbd, 0x7f, 0x11, 0xc0, 0x43, 0xda, 0x97, 0x5e, 0x2a, 0x8a, 0xd9, 0xeb, 0xae, 0x0b, ]; uuidStringify(uuidBytes); // ⇨ '6ec0bd7f-11c0-43da-975e-2a8ad9ebae0b' ``` ### uuid.v1([options[, buffer[, offset]]]) Create an RFC version 1 (timestamp) UUID | | | | --- | --- | | [`options`] | `Object` with one or more of the following properties: | | [`options.node` ] | RFC "node" field as an `Array[6]` of byte values (per 4.1.6) | | [`options.clockseq`] | RFC "clock sequence" as a `Number` between 0 - 0x3fff | | [`options.msecs`] | RFC "timestamp" field (`Number` of milliseconds, unix epoch) | | [`options.nsecs`] | RFC "timestamp" field (`Number` of nanseconds to add to `msecs`, should be 0-10,000) | | [`options.random`] | `Array` of 16 random bytes (0-255) | | [`options.rng`] | Alternative to `options.random`, a `Function` that returns an `Array` of 16 random bytes (0-255) | | [`buffer`] | `Array \| Buffer` If specified, uuid will be written here in byte-form, starting at `offset` | | [`offset` = 0] | `Number` Index to start writing UUID bytes in `buffer` | | _returns_ | UUID `String` if no `buffer` is specified, otherwise returns `buffer` | | _throws_ | `Error` if more than 10M UUIDs/sec are requested | Note: The default [node id](https://tools.ietf.org/html/rfc4122#section-4.1.6) (the last 12 digits in the UUID) is generated once, randomly, on process startup, and then remains unchanged for the duration of the process. Note: `options.random` and `options.rng` are only meaningful on the very first call to `v1()`, where they may be passed to initialize the internal `node` and `clockseq` fields. Example: ```javascript import { v1 as uuidv1 } from 'uuid'; uuidv1(); // ⇨ '2c5ea4c0-4067-11e9-8bad-9b1deb4d3b7d' ``` Example using `options`: ```javascript import { v1 as uuidv1 } from 'uuid'; const v1options = { node: [0x01, 0x23, 0x45, 0x67, 0x89, 0xab], clockseq: 0x1234, msecs: new Date('2011-11-01').getTime(), nsecs: 5678, }; uuidv1(v1options); // ⇨ '710b962e-041c-11e1-9234-0123456789ab' ``` ### uuid.v3(name, namespace[, buffer[, offset]]) Create an RFC version 3 (namespace w/ MD5) UUID API is identical to `v5()`, but uses "v3" instead. &#x26a0;&#xfe0f; Note: Per the RFC, "_If backward compatibility is not an issue, SHA-1 [Version 5] is preferred_." ### uuid.v4([options[, buffer[, offset]]]) Create an RFC version 4 (random) UUID | | | | --- | --- | | [`options`] | `Object` with one or more of the following properties: | | [`options.random`] | `Array` of 16 random bytes (0-255) | | [`options.rng`] | Alternative to `options.random`, a `Function` that returns an `Array` of 16 random bytes (0-255) | | [`buffer`] | `Array \| Buffer` If specified, uuid will be written here in byte-form, starting at `offset` | | [`offset` = 0] | `Number` Index to start writing UUID bytes in `buffer` | | _returns_ | UUID `String` if no `buffer` is specified, otherwise returns `buffer` | Example: ```javascript import { v4 as uuidv4 } from 'uuid'; uuidv4(); // ⇨ '1b9d6bcd-bbfd-4b2d-9b5d-ab8dfbbd4bed' ``` Example using predefined `random` values: ```javascript import { v4 as uuidv4 } from 'uuid'; const v4options = { random: [ 0x10, 0x91, 0x56, 0xbe, 0xc4, 0xfb, 0xc1, 0xea, 0x71, 0xb4, 0xef, 0xe1, 0x67, 0x1c, 0x58, 0x36, ], }; uuidv4(v4options); // ⇨ '109156be-c4fb-41ea-b1b4-efe1671c5836' ``` ### uuid.v5(name, namespace[, buffer[, offset]]) Create an RFC version 5 (namespace w/ SHA-1) UUID | | | | --- | --- | | `name` | `String \| Array` | | `namespace` | `String \| Array[16]` Namespace UUID | | [`buffer`] | `Array \| Buffer` If specified, uuid will be written here in byte-form, starting at `offset` | | [`offset` = 0] | `Number` Index to start writing UUID bytes in `buffer` | | _returns_ | UUID `String` if no `buffer` is specified, otherwise returns `buffer` | Note: The RFC `DNS` and `URL` namespaces are available as `v5.DNS` and `v5.URL`. Example with custom namespace: ```javascript import { v5 as uuidv5 } from 'uuid'; // Define a custom namespace. Readers, create your own using something like // https://www.uuidgenerator.net/ const MY_NAMESPACE = '1b671a64-40d5-491e-99b0-da01ff1f3341'; uuidv5('Hello, World!', MY_NAMESPACE); // ⇨ '630eb68f-e0fa-5ecc-887a-7c7a62614681' ``` Example with RFC `URL` namespace: ```javascript import { v5 as uuidv5 } from 'uuid'; uuidv5('https://www.w3.org/', uuidv5.URL); // ⇨ 'c106a26a-21bb-5538-8bf2-57095d1976c1' ``` ### uuid.validate(str) Test a string to see if it is a valid UUID | | | | --------- | --------------------------------------------------- | | `str` | `String` to validate | | _returns_ | `true` if string is a valid UUID, `false` otherwise | Example: ```javascript import { validate as uuidValidate } from 'uuid'; uuidValidate('not a UUID'); // ⇨ false uuidValidate('6ec0bd7f-11c0-43da-975e-2a8ad9ebae0b'); // ⇨ true ``` Using `validate` and `version` together it is possible to do per-version validation, e.g. validate for only v4 UUIds. ```javascript import { version as uuidVersion } from 'uuid'; import { validate as uuidValidate } from 'uuid'; function uuidValidateV4(uuid) { return uuidValidate(uuid) && uuidVersion(uuid) === 4; } const v1Uuid = 'd9428888-122b-11e1-b85c-61cd3cbb3210'; const v4Uuid = '109156be-c4fb-41ea-b1b4-efe1671c5836'; uuidValidateV4(v4Uuid); // ⇨ true uuidValidateV4(v1Uuid); // ⇨ false ``` ### uuid.version(str) Detect RFC version of a UUID | | | | --------- | ---------------------------------------- | | `str` | A valid UUID `String` | | _returns_ | `Number` The RFC version of the UUID | | _throws_ | `TypeError` if `str` is not a valid UUID | Example: ```javascript import { version as uuidVersion } from 'uuid'; uuidVersion('45637ec4-c85f-11ea-87d0-0242ac130003'); // ⇨ 1 uuidVersion('6ec0bd7f-11c0-43da-975e-2a8ad9ebae0b'); // ⇨ 4 ``` ## Command Line UUIDs can be generated from the command line using `uuid`. ```shell $ uuid ddeb27fb-d9a0-4624-be4d-4615062daed4 ``` The default is to generate version 4 UUIDS, however the other versions are supported. Type `uuid --help` for details: ```shell $ uuid --help Usage: uuid uuid v1 uuid v3 <name> <namespace uuid> uuid v4 uuid v5 <name> <namespace uuid> uuid --help Note: <namespace uuid> may be "URL" or "DNS" to use the corresponding UUIDs defined by RFC4122 ``` ## ECMAScript Modules This library comes with [ECMAScript Modules](https://www.ecma-international.org/ecma-262/6.0/#sec-modules) (ESM) support for Node.js versions that support it ([example](./examples/node-esmodules/)) as well as bundlers like [rollup.js](https://rollupjs.org/guide/en/#tree-shaking) ([example](./examples/browser-rollup/)) and [webpack](https://webpack.js.org/guides/tree-shaking/) ([example](./examples/browser-webpack/)) (targeting both, Node.js and browser environments). ```javascript import { v4 as uuidv4 } from 'uuid'; uuidv4(); // ⇨ '1b9d6bcd-bbfd-4b2d-9b5d-ab8dfbbd4bed' ``` To run the examples you must first create a dist build of this library in the module root: ```shell npm run build ``` ## CDN Builds ### ECMAScript Modules To load this module directly into modern browsers that [support loading ECMAScript Modules](https://caniuse.com/#feat=es6-module) you can make use of [jspm](https://jspm.org/): ```html <script type="module"> import { v4 as uuidv4 } from 'https://jspm.dev/uuid'; console.log(uuidv4()); // ⇨ '1b9d6bcd-bbfd-4b2d-9b5d-ab8dfbbd4bed' </script> ``` ### UMD To load this module directly into older browsers you can use the [UMD (Universal Module Definition)](https://github.com/umdjs/umd) builds from any of the following CDNs: **Using [UNPKG](https://unpkg.com/uuid@latest/dist/umd/)**: ```html <script src="https://unpkg.com/uuid@latest/dist/umd/uuidv4.min.js"></script> ``` **Using [jsDelivr](https://cdn.jsdelivr.net/npm/uuid@latest/dist/umd/)**: ```html <script src="https://cdn.jsdelivr.net/npm/uuid@latest/dist/umd/uuidv4.min.js"></script> ``` **Using [cdnjs](https://cdnjs.com/libraries/uuid)**: ```html <script src="https://cdnjs.cloudflare.com/ajax/libs/uuid/8.1.0/uuidv4.min.js"></script> ``` These CDNs all provide the same [`uuidv4()`](#uuidv4options-buffer-offset) method: ```html <script> uuidv4(); // ⇨ '55af1e37-0734-46d8-b070-a1e42e4fc392' </script> ``` Methods for the other algorithms ([`uuidv1()`](#uuidv1options-buffer-offset), [`uuidv3()`](#uuidv3name-namespace-buffer-offset) and [`uuidv5()`](#uuidv5name-namespace-buffer-offset)) are available from the files `uuidv1.min.js`, `uuidv3.min.js` and `uuidv5.min.js` respectively. ## "getRandomValues() not supported" This error occurs in environments where the standard [`crypto.getRandomValues()`](https://developer.mozilla.org/en-US/docs/Web/API/Crypto/getRandomValues) API is not supported. This issue can be resolved by adding an appropriate polyfill: ### React Native / Expo 1. Install [`react-native-get-random-values`](https://github.com/LinusU/react-native-get-random-values#readme) 1. Import it _before_ `uuid`. Since `uuid` might also appear as a transitive dependency of some other imports it's safest to just import `react-native-get-random-values` as the very first thing in your entry point: ```javascript import 'react-native-get-random-values'; import { v4 as uuidv4 } from 'uuid'; ``` Note: If you are using Expo, you must be using at least `react-native-get-random-values@1.5.0` and `expo@39.0.0`. ### Web Workers / Service Workers (Edge <= 18) [In Edge <= 18, Web Crypto is not supported in Web Workers or Service Workers](https://caniuse.com/#feat=cryptography) and we are not aware of a polyfill (let us know if you find one, please). ## Upgrading From `uuid@7.x` ### Only Named Exports Supported When Using with Node.js ESM `uuid@7.x` did not come with native ECMAScript Module (ESM) support for Node.js. Importing it in Node.js ESM consequently imported the CommonJS source with a default export. This library now comes with true Node.js ESM support and only provides named exports. Instead of doing: ```javascript import uuid from 'uuid'; uuid.v4(); ``` you will now have to use the named exports: ```javascript import { v4 as uuidv4 } from 'uuid'; uuidv4(); ``` ### Deep Requires No Longer Supported Deep requires like `require('uuid/v4')` [which have been deprecated in `uuid@7.x`](#deep-requires-now-deprecated) are no longer supported. ## Upgrading From `uuid@3.x` "_Wait... what happened to `uuid@4.x` - `uuid@6.x`?!?_" In order to avoid confusion with RFC [version 4](#uuidv4options-buffer-offset) and [version 5](#uuidv5name-namespace-buffer-offset) UUIDs, and a possible [version 6](http://gh.peabody.io/uuidv6/), releases 4 thru 6 of this module have been skipped. ### Deep Requires Now Deprecated `uuid@3.x` encouraged the use of deep requires to minimize the bundle size of browser builds: ```javascript const uuidv4 = require('uuid/v4'); // <== NOW DEPRECATED! uuidv4(); ``` As of `uuid@7.x` this library now provides ECMAScript modules builds, which allow packagers like Webpack and Rollup to do "tree-shaking" to remove dead code. Instead, use the `import` syntax: ```javascript import { v4 as uuidv4 } from 'uuid'; uuidv4(); ``` ... or for CommonJS: ```javascript const { v4: uuidv4 } = require('uuid'); uuidv4(); ``` ### Default Export Removed `uuid@3.x` was exporting the Version 4 UUID method as a default export: ```javascript const uuid = require('uuid'); // <== REMOVED! ``` This usage pattern was already discouraged in `uuid@3.x` and has been removed in `uuid@7.x`. ---- Markdown generated from [README_js.md](README_js.md) by [](https://github.com/broofa/runmd) # is-ci Returns `true` if the current environment is a Continuous Integration server. Please [open an issue](https://github.com/watson/is-ci/issues) if your CI server isn't properly detected :) [](https://www.npmjs.com/package/is-ci) [](https://travis-ci.org/watson/is-ci) [](https://github.com/feross/standard) ## Installation ```bash npm install is-ci --save ``` ## Programmatic Usage ```js const isCI = require('is-ci') if (isCI) { console.log('The code is running on a CI server') } ``` ## CLI Usage For CLI usage you need to have the `is-ci` executable in your `PATH`. There's a few ways to do that: - Either install the module globally using `npm install is-ci -g` - Or add the module as a dependency to your app in which case it can be used inside your package.json scripts as is - Or provide the full path to the executable, e.g. `./node_modules/.bin/is-ci` ```bash is-ci && echo "This is a CI server" ``` ## Supported CI tools Refer to [ci-info](https://github.com/watson/ci-info#supported-ci-tools) docs for all supported CI's ## License [MIT](LICENSE) # assemblyscript-json   JSON encoder / decoder for AssemblyScript. Special thanks to https://github.com/MaxGraey/bignum.wasm for basic unit testing infra for AssemblyScript. ## Installation `assemblyscript-json` is available as a [npm package](https://www.npmjs.com/package/assemblyscript-json). You can install `assemblyscript-json` in your AssemblyScript project by running: `npm install --save assemblyscript-json` ## Usage ### Parsing JSON ```typescript import { JSON } from "assemblyscript-json"; // Parse an object using the JSON object let jsonObj: JSON.Obj = <JSON.Obj>(JSON.parse('{"hello": "world", "value": 24}')); // We can then use the .getX functions to read from the object if you know it's type // This will return the appropriate JSON.X value if the key exists, or null if the key does not exist let worldOrNull: JSON.Str | null = jsonObj.getString("hello"); // This will return a JSON.Str or null if (worldOrNull != null) { // use .valueOf() to turn the high level JSON.Str type into a string let world: string = worldOrNull.valueOf(); } let numOrNull: JSON.Num | null = jsonObj.getNum("value"); if (numOrNull != null) { // use .valueOf() to turn the high level JSON.Num type into a f64 let value: f64 = numOrNull.valueOf(); } // If you don't know the value type, get the parent JSON.Value let valueOrNull: JSON.Value | null = jsonObj.getValue("hello"); if (valueOrNull != null) { let value = <JSON.Value>valueOrNull; // Next we could figure out what type we are if(value.isString) { // value.isString would be true, so we can cast to a string let innerString = (<JSON.Str>value).valueOf(); let jsonString = (<JSON.Str>value).stringify(); // Do something with string value } } ``` ### Encoding JSON ```typescript import { JSONEncoder } from "assemblyscript-json"; // Create encoder let encoder = new JSONEncoder(); // Construct necessary object encoder.pushObject("obj"); encoder.setInteger("int", 10); encoder.setString("str", ""); encoder.popObject(); // Get serialized data let json: Uint8Array = encoder.serialize(); // Or get serialized data as string let jsonString: string = encoder.stringify(); assert(jsonString, '"obj": {"int": 10, "str": ""}'); // True! ``` ### Custom JSON Deserializers ```typescript import { JSONDecoder, JSONHandler } from "assemblyscript-json"; // Events need to be received by custom object extending JSONHandler. // NOTE: All methods are optional to implement. class MyJSONEventsHandler extends JSONHandler { setString(name: string, value: string): void { // Handle field } setBoolean(name: string, value: bool): void { // Handle field } setNull(name: string): void { // Handle field } setInteger(name: string, value: i64): void { // Handle field } setFloat(name: string, value: f64): void { // Handle field } pushArray(name: string): bool { // Handle array start // true means that nested object needs to be traversed, false otherwise // Note that returning false means JSONDecoder.startIndex need to be updated by handler return true; } popArray(): void { // Handle array end } pushObject(name: string): bool { // Handle object start // true means that nested object needs to be traversed, false otherwise // Note that returning false means JSONDecoder.startIndex need to be updated by handler return true; } popObject(): void { // Handle object end } } // Create decoder let decoder = new JSONDecoder<MyJSONEventsHandler>(new MyJSONEventsHandler()); // Create a byte buffer of our JSON. NOTE: Deserializers work on UTF8 string buffers. let jsonString = '{"hello": "world"}'; let jsonBuffer = Uint8Array.wrap(String.UTF8.encode(jsonString)); // Parse JSON decoder.deserialize(jsonBuffer); // This will send events to MyJSONEventsHandler ``` Feel free to look through the [tests](https://github.com/nearprotocol/assemblyscript-json/tree/master/assembly/__tests__) for more usage examples. ## Reference Documentation Reference API Documentation can be found in the [docs directory](./docs). ## License [MIT](./LICENSE) # fs.realpath A backwards-compatible fs.realpath for Node v6 and above In Node v6, the JavaScript implementation of fs.realpath was replaced with a faster (but less resilient) native implementation. That raises new and platform-specific errors and cannot handle long or excessively symlink-looping paths. This module handles those cases by detecting the new errors and falling back to the JavaScript implementation. On versions of Node prior to v6, it has no effect. ## USAGE ```js var rp = require('fs.realpath') // async version rp.realpath(someLongAndLoopingPath, function (er, real) { // the ELOOP was handled, but it was a bit slower }) // sync version var real = rp.realpathSync(someLongAndLoopingPath) // monkeypatch at your own risk! // This replaces the fs.realpath/fs.realpathSync builtins rp.monkeypatch() // un-do the monkeypatching rp.unmonkeypatch() ``` # Borsh JS [](https://opensource.org/licenses/Apache-2.0) [](https://opensource.org/licenses/MIT) [](https://discord.gg/Vyp7ETM) [](https://travis-ci.com/near/borsh-js) [](https://npmjs.com/borsh) [](https://npmjs.com/borsh) **Borsh JS** is an implementation of the [Borsh] binary serialization format for JavaScript and TypeScript projects. Borsh stands for _Binary Object Representation Serializer for Hashing_. It is meant to be used in security-critical projects as it prioritizes consistency, safety, speed, and comes with a strict specification. ## Examples ### Serializing an object ```javascript const value = new Test({ x: 255, y: 20, z: '123', q: [1, 2, 3] }); const schema = new Map([[Test, { kind: 'struct', fields: [['x', 'u8'], ['y', 'u64'], ['z', 'string'], ['q', [3]]] }]]); const buffer = borsh.serialize(schema, value); ``` ### Deserializing an object ```javascript const newValue = borsh.deserialize(schema, Test, buffer); ``` ## Type Mappings | Borsh | TypeScript | |-----------------------|----------------| | `u8` integer | `number` | | `u16` integer | `number` | | `u32` integer | `number` | | `u64` integer | `BN` | | `u128` integer | `BN` | | `u256` integer | `BN` | | `u512` integer | `BN` | | `f32` float | N/A | | `f64` float | N/A | | fixed-size byte array | `Uint8Array` | | UTF-8 string | `string` | | option | `null` or type | | map | N/A | | set | N/A | | structs | `any` | ## Contributing Install dependencies: ```bash yarn install ``` Continuously build with: ```bash yarn dev ``` Run tests: ```bash yarn test ``` Run linter ```bash yarn lint ``` ## Publish Prepare `dist` version by running: ```bash yarn build ``` When publishing to npm use [np](https://github.com/sindresorhus/np). # License This repository is distributed under the terms of both the MIT license and the Apache License (Version 2.0). See [LICENSE-MIT](LICENSE-MIT.txt) and [LICENSE-APACHE](LICENSE-APACHE) for details. [Borsh]: https://borsh.io [](https://www.npmjs.com/package/eslint) [](https://www.npmjs.com/package/eslint) [](https://github.com/eslint/eslint/actions) [](https://app.fossa.io/projects/git%2Bhttps%3A%2F%2Fgithub.com%2Feslint%2Feslint?ref=badge_shield) <br /> [](https://opencollective.com/eslint) [](https://opencollective.com/eslint) [](https://twitter.com/intent/user?screen_name=geteslint) # ESLint [Website](https://eslint.org) | [Configuring](https://eslint.org/docs/user-guide/configuring) | [Rules](https://eslint.org/docs/rules/) | [Contributing](https://eslint.org/docs/developer-guide/contributing) | [Reporting Bugs](https://eslint.org/docs/developer-guide/contributing/reporting-bugs) | [Code of Conduct](https://eslint.org/conduct) | [Twitter](https://twitter.com/geteslint) | [Mailing List](https://groups.google.com/group/eslint) | [Chat Room](https://eslint.org/chat) ESLint is a tool for identifying and reporting on patterns found in ECMAScript/JavaScript code. In many ways, it is similar to JSLint and JSHint with a few exceptions: * ESLint uses [Espree](https://github.com/eslint/espree) for JavaScript parsing. * ESLint uses an AST to evaluate patterns in code. * ESLint is completely pluggable, every single rule is a plugin and you can add more at runtime. ## Table of Contents 1. [Installation and Usage](#installation-and-usage) 2. [Configuration](#configuration) 3. [Code of Conduct](#code-of-conduct) 4. [Filing Issues](#filing-issues) 5. [Frequently Asked Questions](#faq) 6. [Releases](#releases) 7. [Security Policy](#security-policy) 8. [Semantic Versioning Policy](#semantic-versioning-policy) 9. [Stylistic Rule Updates](#stylistic-rule-updates) 10. [License](#license) 11. [Team](#team) 12. [Sponsors](#sponsors) 13. [Technology Sponsors](#technology-sponsors) ## <a name="installation-and-usage"></a>Installation and Usage Prerequisites: [Node.js](https://nodejs.org/) (`^10.12.0`, or `>=12.0.0`) built with SSL support. (If you are using an official Node.js distribution, SSL is always built in.) You can install ESLint using npm: ``` $ npm install eslint --save-dev ``` You should then set up a configuration file: ``` $ ./node_modules/.bin/eslint --init ``` After that, you can run ESLint on any file or directory like this: ``` $ ./node_modules/.bin/eslint yourfile.js ``` ## <a name="configuration"></a>Configuration After running `eslint --init`, you'll have a `.eslintrc` file in your directory. In it, you'll see some rules configured like this: ```json { "rules": { "semi": ["error", "always"], "quotes": ["error", "double"] } } ``` The names `"semi"` and `"quotes"` are the names of [rules](https://eslint.org/docs/rules) in ESLint. The first value is the error level of the rule and can be one of these values: * `"off"` or `0` - turn the rule off * `"warn"` or `1` - turn the rule on as a warning (doesn't affect exit code) * `"error"` or `2` - turn the rule on as an error (exit code will be 1) The three error levels allow you fine-grained control over how ESLint applies rules (for more configuration options and details, see the [configuration docs](https://eslint.org/docs/user-guide/configuring)). ## <a name="code-of-conduct"></a>Code of Conduct ESLint adheres to the [JS Foundation Code of Conduct](https://eslint.org/conduct). ## <a name="filing-issues"></a>Filing Issues Before filing an issue, please be sure to read the guidelines for what you're reporting: * [Bug Report](https://eslint.org/docs/developer-guide/contributing/reporting-bugs) * [Propose a New Rule](https://eslint.org/docs/developer-guide/contributing/new-rules) * [Proposing a Rule Change](https://eslint.org/docs/developer-guide/contributing/rule-changes) * [Request a Change](https://eslint.org/docs/developer-guide/contributing/changes) ## <a name="faq"></a>Frequently Asked Questions ### I'm using JSCS, should I migrate to ESLint? Yes. [JSCS has reached end of life](https://eslint.org/blog/2016/07/jscs-end-of-life) and is no longer supported. We have prepared a [migration guide](https://eslint.org/docs/user-guide/migrating-from-jscs) to help you convert your JSCS settings to an ESLint configuration. We are now at or near 100% compatibility with JSCS. If you try ESLint and believe we are not yet compatible with a JSCS rule/configuration, please create an issue (mentioning that it is a JSCS compatibility issue) and we will evaluate it as per our normal process. ### Does Prettier replace ESLint? No, ESLint does both traditional linting (looking for problematic patterns) and style checking (enforcement of conventions). You can use ESLint for everything, or you can combine both using Prettier to format your code and ESLint to catch possible errors. ### Why can't ESLint find my plugins? * Make sure your plugins (and ESLint) are both in your project's `package.json` as devDependencies (or dependencies, if your project uses ESLint at runtime). * Make sure you have run `npm install` and all your dependencies are installed. * Make sure your plugins' peerDependencies have been installed as well. You can use `npm view eslint-plugin-myplugin peerDependencies` to see what peer dependencies `eslint-plugin-myplugin` has. ### Does ESLint support JSX? Yes, ESLint natively supports parsing JSX syntax (this must be enabled in [configuration](https://eslint.org/docs/user-guide/configuring)). Please note that supporting JSX syntax *is not* the same as supporting React. React applies specific semantics to JSX syntax that ESLint doesn't recognize. We recommend using [eslint-plugin-react](https://www.npmjs.com/package/eslint-plugin-react) if you are using React and want React semantics. ### What ECMAScript versions does ESLint support? ESLint has full support for ECMAScript 3, 5 (default), 2015, 2016, 2017, 2018, 2019, and 2020. You can set your desired ECMAScript syntax (and other settings, like global variables or your target environments) through [configuration](https://eslint.org/docs/user-guide/configuring). ### What about experimental features? ESLint's parser only officially supports the latest final ECMAScript standard. We will make changes to core rules in order to avoid crashes on stage 3 ECMAScript syntax proposals (as long as they are implemented using the correct experimental ESTree syntax). We may make changes to core rules to better work with language extensions (such as JSX, Flow, and TypeScript) on a case-by-case basis. In other cases (including if rules need to warn on more or fewer cases due to new syntax, rather than just not crashing), we recommend you use other parsers and/or rule plugins. If you are using Babel, you can use the [babel-eslint](https://github.com/babel/babel-eslint) parser and [eslint-plugin-babel](https://github.com/babel/eslint-plugin-babel) to use any option available in Babel. Once a language feature has been adopted into the ECMAScript standard (stage 4 according to the [TC39 process](https://tc39.github.io/process-document/)), we will accept issues and pull requests related to the new feature, subject to our [contributing guidelines](https://eslint.org/docs/developer-guide/contributing). Until then, please use the appropriate parser and plugin(s) for your experimental feature. ### Where to ask for help? Join our [Mailing List](https://groups.google.com/group/eslint) or [Chatroom](https://eslint.org/chat). ### Why doesn't ESLint lock dependency versions? Lock files like `package-lock.json` are helpful for deployed applications. They ensure that dependencies are consistent between environments and across deployments. Packages like `eslint` that get published to the npm registry do not include lock files. `npm install eslint` as a user will respect version constraints in ESLint's `package.json`. ESLint and its dependencies will be included in the user's lock file if one exists, but ESLint's own lock file would not be used. We intentionally don't lock dependency versions so that we have the latest compatible dependency versions in development and CI that our users get when installing ESLint in a project. The Twilio blog has a [deeper dive](https://www.twilio.com/blog/lockfiles-nodejs) to learn more. ## <a name="releases"></a>Releases We have scheduled releases every two weeks on Friday or Saturday. You can follow a [release issue](https://github.com/eslint/eslint/issues?q=is%3Aopen+is%3Aissue+label%3Arelease) for updates about the scheduling of any particular release. ## <a name="security-policy"></a>Security Policy ESLint takes security seriously. We work hard to ensure that ESLint is safe for everyone and that security issues are addressed quickly and responsibly. Read the full [security policy](https://github.com/eslint/.github/blob/master/SECURITY.md). ## <a name="semantic-versioning-policy"></a>Semantic Versioning Policy ESLint follows [semantic versioning](https://semver.org). However, due to the nature of ESLint as a code quality tool, it's not always clear when a minor or major version bump occurs. To help clarify this for everyone, we've defined the following semantic versioning policy for ESLint: * Patch release (intended to not break your lint build) * A bug fix in a rule that results in ESLint reporting fewer linting errors. * A bug fix to the CLI or core (including formatters). * Improvements to documentation. * Non-user-facing changes such as refactoring code, adding, deleting, or modifying tests, and increasing test coverage. * Re-releasing after a failed release (i.e., publishing a release that doesn't work for anyone). * Minor release (might break your lint build) * A bug fix in a rule that results in ESLint reporting more linting errors. * A new rule is created. * A new option to an existing rule that does not result in ESLint reporting more linting errors by default. * A new addition to an existing rule to support a newly-added language feature (within the last 12 months) that will result in ESLint reporting more linting errors by default. * An existing rule is deprecated. * A new CLI capability is created. * New capabilities to the public API are added (new classes, new methods, new arguments to existing methods, etc.). * A new formatter is created. * `eslint:recommended` is updated and will result in strictly fewer linting errors (e.g., rule removals). * Major release (likely to break your lint build) * `eslint:recommended` is updated and may result in new linting errors (e.g., rule additions, most rule option updates). * A new option to an existing rule that results in ESLint reporting more linting errors by default. * An existing formatter is removed. * Part of the public API is removed or changed in an incompatible way. The public API includes: * Rule schemas * Configuration schema * Command-line options * Node.js API * Rule, formatter, parser, plugin APIs According to our policy, any minor update may report more linting errors than the previous release (ex: from a bug fix). As such, we recommend using the tilde (`~`) in `package.json` e.g. `"eslint": "~3.1.0"` to guarantee the results of your builds. ## <a name="stylistic-rule-updates"></a>Stylistic Rule Updates Stylistic rules are frozen according to [our policy](https://eslint.org/blog/2020/05/changes-to-rules-policies) on how we evaluate new rules and rule changes. This means: * **Bug fixes**: We will still fix bugs in stylistic rules. * **New ECMAScript features**: We will also make sure stylistic rules are compatible with new ECMAScript features. * **New options**: We will **not** add any new options to stylistic rules unless an option is the only way to fix a bug or support a newly-added ECMAScript feature. ## <a name="license"></a>License [](https://app.fossa.io/projects/git%2Bhttps%3A%2F%2Fgithub.com%2Feslint%2Feslint?ref=badge_large) ## <a name="team"></a>Team These folks keep the project moving and are resources for help. <!-- NOTE: This section is autogenerated. Do not manually edit.--> <!--teamstart--> ### Technical Steering Committee (TSC) The people who manage releases, review feature requests, and meet regularly to ensure ESLint is properly maintained. <table><tbody><tr><td align="center" valign="top" width="11%"> <a href="https://github.com/nzakas"> <img src="https://github.com/nzakas.png?s=75" width="75" height="75"><br /> Nicholas C. Zakas </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/btmills"> <img src="https://github.com/btmills.png?s=75" width="75" height="75"><br /> Brandon Mills </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/mdjermanovic"> <img src="https://github.com/mdjermanovic.png?s=75" width="75" height="75"><br /> Milos Djermanovic </a> </td></tr></tbody></table> ### Reviewers The people who review and implement new features. <table><tbody><tr><td align="center" valign="top" width="11%"> <a href="https://github.com/mysticatea"> <img src="https://github.com/mysticatea.png?s=75" width="75" height="75"><br /> Toru Nagashima </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/aladdin-add"> <img src="https://github.com/aladdin-add.png?s=75" width="75" height="75"><br /> 薛定谔的猫 </a> </td></tr></tbody></table> ### Committers The people who review and fix bugs and help triage issues. <table><tbody><tr><td align="center" valign="top" width="11%"> <a href="https://github.com/brettz9"> <img src="https://github.com/brettz9.png?s=75" width="75" height="75"><br /> Brett Zamir </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/bmish"> <img src="https://github.com/bmish.png?s=75" width="75" height="75"><br /> Bryan Mishkin </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/g-plane"> <img src="https://github.com/g-plane.png?s=75" width="75" height="75"><br /> Pig Fang </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/anikethsaha"> <img src="https://github.com/anikethsaha.png?s=75" width="75" height="75"><br /> Anix </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/yeonjuan"> <img src="https://github.com/yeonjuan.png?s=75" width="75" height="75"><br /> YeonJuan </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/snitin315"> <img src="https://github.com/snitin315.png?s=75" width="75" height="75"><br /> Nitin Kumar </a> </td></tr></tbody></table> <!--teamend--> ## <a name="sponsors"></a>Sponsors The following companies, organizations, and individuals support ESLint's ongoing maintenance and development. [Become a Sponsor](https://opencollective.com/eslint) to get your logo on our README and website. <!-- NOTE: This section is autogenerated. Do not manually edit.--> <!--sponsorsstart--> <h3>Platinum Sponsors</h3> <p><a href="https://automattic.com"><img src="https://images.opencollective.com/photomatt/d0ef3e1/logo.png" alt="Automattic" height="undefined"></a></p><h3>Gold Sponsors</h3> <p><a href="https://nx.dev"><img src="https://images.opencollective.com/nx/0efbe42/logo.png" alt="Nx (by Nrwl)" height="96"></a> <a href="https://google.com/chrome"><img src="https://images.opencollective.com/chrome/dc55bd4/logo.png" alt="Chrome's Web Framework & Tools Performance Fund" height="96"></a> <a href="https://www.salesforce.com"><img src="https://images.opencollective.com/salesforce/ca8f997/logo.png" alt="Salesforce" height="96"></a> <a href="https://www.airbnb.com/"><img src="https://images.opencollective.com/airbnb/d327d66/logo.png" alt="Airbnb" height="96"></a> <a href="https://coinbase.com"><img src="https://avatars.githubusercontent.com/u/1885080?v=4" alt="Coinbase" height="96"></a> <a href="https://substack.com/"><img src="https://avatars.githubusercontent.com/u/53023767?v=4" alt="Substack" height="96"></a></p><h3>Silver Sponsors</h3> <p><a href="https://retool.com/"><img src="https://images.opencollective.com/retool/98ea68e/logo.png" alt="Retool" height="64"></a> <a href="https://liftoff.io/"><img src="https://images.opencollective.com/liftoff/5c4fa84/logo.png" alt="Liftoff" height="64"></a></p><h3>Bronze Sponsors</h3> <p><a href="https://www.crosswordsolver.org/anagram-solver/"><img src="https://images.opencollective.com/anagram-solver/2666271/logo.png" alt="Anagram Solver" height="32"></a> <a href="null"><img src="https://images.opencollective.com/bugsnag-stability-monitoring/c2cef36/logo.png" alt="Bugsnag Stability Monitoring" height="32"></a> <a href="https://mixpanel.com"><img src="https://images.opencollective.com/mixpanel/cd682f7/logo.png" alt="Mixpanel" height="32"></a> <a href="https://www.vpsserver.com"><img src="https://images.opencollective.com/vpsservercom/logo.png" alt="VPS Server" height="32"></a> <a href="https://icons8.com"><img src="https://images.opencollective.com/icons8/7fa1641/logo.png" alt="Icons8: free icons, photos, illustrations, and music" height="32"></a> <a href="https://discord.com"><img src="https://images.opencollective.com/discordapp/f9645d9/logo.png" alt="Discord" height="32"></a> <a href="https://themeisle.com"><img src="https://images.opencollective.com/themeisle/d5592fe/logo.png" alt="ThemeIsle" height="32"></a> <a href="https://www.firesticktricks.com"><img src="https://images.opencollective.com/fire-stick-tricks/b8fbe2c/logo.png" alt="Fire Stick Tricks" height="32"></a> <a href="https://www.practiceignition.com"><img src="https://avatars.githubusercontent.com/u/5753491?v=4" alt="Practice Ignition" height="32"></a></p> <!--sponsorsend--> ## <a name="technology-sponsors"></a>Technology Sponsors * Site search ([eslint.org](https://eslint.org)) is sponsored by [Algolia](https://www.algolia.com) * Hosting for ([eslint.org](https://eslint.org)) is sponsored by [Netlify](https://www.netlify.com) * Password management is sponsored by [1Password](https://www.1password.com) <p align="center"> <img width="250" src="https://raw.githubusercontent.com/yargs/yargs/master/yargs-logo.png"> </p> <h1 align="center"> Yargs </h1> <p align="center"> <b >Yargs be a node.js library fer hearties tryin' ter parse optstrings</b> </p> <br>  [![NPM version][npm-image]][npm-url] [![js-standard-style][standard-image]][standard-url] [![Coverage][coverage-image]][coverage-url] [![Conventional Commits][conventional-commits-image]][conventional-commits-url] [![Slack][slack-image]][slack-url] ## Description Yargs helps you build interactive command line tools, by parsing arguments and generating an elegant user interface. It gives you: * commands and (grouped) options (`my-program.js serve --port=5000`). * a dynamically generated help menu based on your arguments: ``` mocha [spec..] Run tests with Mocha Commands mocha inspect [spec..] Run tests with Mocha [default] mocha init <path> create a client-side Mocha setup at <path> Rules & Behavior --allow-uncaught Allow uncaught errors to propagate [boolean] --async-only, -A Require all tests to use a callback (async) or return a Promise [boolean] ``` * bash-completion shortcuts for commands and options. * and [tons more](/docs/api.md). ## Installation Stable version: ```bash npm i yargs ``` Bleeding edge version with the most recent features: ```bash npm i yargs@next ``` ## Usage ### Simple Example ```javascript #!/usr/bin/env node const yargs = require('yargs/yargs') const { hideBin } = require('yargs/helpers') const argv = yargs(hideBin(process.argv)).argv if (argv.ships > 3 && argv.distance < 53.5) { console.log('Plunder more riffiwobbles!') } else { console.log('Retreat from the xupptumblers!') } ``` ```bash $ ./plunder.js --ships=4 --distance=22 Plunder more riffiwobbles! $ ./plunder.js --ships 12 --distance 98.7 Retreat from the xupptumblers! ``` ### Complex Example ```javascript #!/usr/bin/env node const yargs = require('yargs/yargs') const { hideBin } = require('yargs/helpers') yargs(hideBin(process.argv)) .command('serve [port]', 'start the server', (yargs) => { yargs .positional('port', { describe: 'port to bind on', default: 5000 }) }, (argv) => { if (argv.verbose) console.info(`start server on :${argv.port}`) serve(argv.port) }) .option('verbose', { alias: 'v', type: 'boolean', description: 'Run with verbose logging' }) .argv ``` Run the example above with `--help` to see the help for the application. ## Supported Platforms ### TypeScript yargs has type definitions at [@types/yargs][type-definitions]. ``` npm i @types/yargs --save-dev ``` See usage examples in [docs](/docs/typescript.md). ### Deno As of `v16`, `yargs` supports [Deno](https://github.com/denoland/deno): ```typescript import yargs from 'https://deno.land/x/yargs/deno.ts' import { Arguments } from 'https://deno.land/x/yargs/deno-types.ts' yargs(Deno.args) .command('download <files...>', 'download a list of files', (yargs: any) => { return yargs.positional('files', { describe: 'a list of files to do something with' }) }, (argv: Arguments) => { console.info(argv) }) .strictCommands() .demandCommand(1) .argv ``` ### ESM As of `v16`,`yargs` supports ESM imports: ```js import yargs from 'yargs' import { hideBin } from 'yargs/helpers' yargs(hideBin(process.argv)) .command('curl <url>', 'fetch the contents of the URL', () => {}, (argv) => { console.info(argv) }) .demandCommand(1) .argv ``` ### Usage in Browser See examples of using yargs in the browser in [docs](/docs/browser.md). ## Community Having problems? want to contribute? join our [community slack](http://devtoolscommunity.herokuapp.com). ## Documentation ### Table of Contents * [Yargs' API](/docs/api.md) * [Examples](/docs/examples.md) * [Parsing Tricks](/docs/tricks.md) * [Stop the Parser](/docs/tricks.md#stop) * [Negating Boolean Arguments](/docs/tricks.md#negate) * [Numbers](/docs/tricks.md#numbers) * [Arrays](/docs/tricks.md#arrays) * [Objects](/docs/tricks.md#objects) * [Quotes](/docs/tricks.md#quotes) * [Advanced Topics](/docs/advanced.md) * [Composing Your App Using Commands](/docs/advanced.md#commands) * [Building Configurable CLI Apps](/docs/advanced.md#configuration) * [Customizing Yargs' Parser](/docs/advanced.md#customizing) * [Bundling yargs](/docs/bundling.md) * [Contributing](/contributing.md) ## Supported Node.js Versions Libraries in this ecosystem make a best effort to track [Node.js' release schedule](https://nodejs.org/en/about/releases/). Here's [a post on why we think this is important](https://medium.com/the-node-js-collection/maintainers-should-consider-following-node-js-release-schedule-ab08ed4de71a). [npm-url]: https://www.npmjs.com/package/yargs [npm-image]: https://img.shields.io/npm/v/yargs.svg [standard-image]: https://img.shields.io/badge/code%20style-standard-brightgreen.svg [standard-url]: http://standardjs.com/ [conventional-commits-image]: https://img.shields.io/badge/Conventional%20Commits-1.0.0-yellow.svg [conventional-commits-url]: https://conventionalcommits.org/ [slack-image]: http://devtoolscommunity.herokuapp.com/badge.svg [slack-url]: http://devtoolscommunity.herokuapp.com [type-definitions]: https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/yargs [coverage-image]: https://img.shields.io/nycrc/yargs/yargs [coverage-url]: https://github.com/yargs/yargs/blob/master/.nycrc # libusb [](https://travis-ci.org/libusb/libusb) [](https://ci.appveyor.com/project/LudovicRousseau/libusb) [](https://scan.coverity.com/projects/libusb-libusb) libusb is a library for USB device access from Linux, macOS, Windows, OpenBSD/NetBSD and Haiku userspace. It is written in C (Haiku backend in C++) and licensed under the GNU Lesser General Public License version 2.1 or, at your option, any later version (see [COPYING](COPYING)). libusb is abstracted internally in such a way that it can hopefully be ported to other operating systems. Please see the [PORTING](PORTING) file for more information. libusb homepage: http://libusb.info/ Developers will wish to consult the API documentation: http://api.libusb.info Use the mailing list for questions, comments, etc: http://mailing-list.libusb.info - Hans de Goede <hdegoede@redhat.com> - Xiaofan Chen <xiaofanc@gmail.com> - Ludovic Rousseau <ludovic.rousseau@gmail.com> - Nathan Hjelm <hjelmn@cs.unm.edu> - Chris Dickens <christopher.a.dickens@gmail.com> (Please use the mailing list rather than mailing developers directly) Shims used when bundling asc for browser usage. # mustache.js - Logic-less {{mustache}} templates with JavaScript > What could be more logical awesome than no logic at all? [](https://travis-ci.org/janl/mustache.js) [mustache.js](http://github.com/janl/mustache.js) is a zero-dependency implementation of the [mustache](http://mustache.github.com/) template system in JavaScript. [Mustache](http://mustache.github.com/) is a logic-less template syntax. It can be used for HTML, config files, source code - anything. It works by expanding tags in a template using values provided in a hash or object. We call it "logic-less" because there are no if statements, else clauses, or for loops. Instead there are only tags. Some tags are replaced with a value, some nothing, and others a series of values. For a language-agnostic overview of mustache's template syntax, see the `mustache(5)` [manpage](http://mustache.github.com/mustache.5.html). ## Where to use mustache.js? You can use mustache.js to render mustache templates anywhere you can use JavaScript. This includes web browsers, server-side environments such as [Node.js](http://nodejs.org/), and [CouchDB](http://couchdb.apache.org/) views. mustache.js ships with support for the [CommonJS](http://www.commonjs.org/) module API, the [Asynchronous Module Definition](https://github.com/amdjs/amdjs-api/wiki/AMD) API (AMD) and [ECMAScript modules](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules). In addition to being a package to be used programmatically, you can use it as a [command line tool](#command-line-tool). And this will be your templates after you use Mustache:  ## Install You can get Mustache via [npm](http://npmjs.com). ```bash $ npm install mustache --save ``` ## Usage Below is a quick example how to use mustache.js: ```js var view = { title: "Joe", calc: function () { return 2 + 4; } }; var output = Mustache.render("{{title}} spends {{calc}}", view); ``` In this example, the `Mustache.render` function takes two parameters: 1) the [mustache](http://mustache.github.com/) template and 2) a `view` object that contains the data and code needed to render the template. ## Templates A [mustache](http://mustache.github.com/) template is a string that contains any number of mustache tags. Tags are indicated by the double mustaches that surround them. `{{person}}` is a tag, as is `{{#person}}`. In both examples we refer to `person` as the tag's key. There are several types of tags available in mustache.js, described below. There are several techniques that can be used to load templates and hand them to mustache.js, here are two of them: #### Include Templates If you need a template for a dynamic part in a static website, you can consider including the template in the static HTML file to avoid loading templates separately. Here's a small example: ```js // file: render.js function renderHello() { var template = document.getElementById('template').innerHTML; var rendered = Mustache.render(template, { name: 'Luke' }); document.getElementById('target').innerHTML = rendered; } ``` ```html <html> <body onload="renderHello()"> <div id="target">Loading...</div> <script id="template" type="x-tmpl-mustache"> Hello {{ name }}! </script> <script src="https://unpkg.com/mustache@latest"></script> <script src="render.js"></script> </body> </html> ``` #### Load External Templates If your templates reside in individual files, you can load them asynchronously and render them when they arrive. Another example using [fetch](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch): ```js function renderHello() { fetch('template.mustache') .then((response) => response.text()) .then((template) => { var rendered = Mustache.render(template, { name: 'Luke' }); document.getElementById('target').innerHTML = rendered; }); } ``` ### Variables The most basic tag type is a simple variable. A `{{name}}` tag renders the value of the `name` key in the current context. If there is no such key, nothing is rendered. All variables are HTML-escaped by default. If you want to render unescaped HTML, use the triple mustache: `{{{name}}}`. You can also use `&` to unescape a variable. If you'd like to change HTML-escaping behavior globally (for example, to template non-HTML formats), you can override Mustache's escape function. For example, to disable all escaping: `Mustache.escape = function(text) {return text;};`. If you want `{{name}}` _not_ to be interpreted as a mustache tag, but rather to appear exactly as `{{name}}` in the output, you must change and then restore the default delimiter. See the [Custom Delimiters](#custom-delimiters) section for more information. View: ```json { "name": "Chris", "company": "<b>GitHub</b>" } ``` Template: ``` * {{name}} * {{age}} * {{company}} * {{{company}}} * {{&company}} {{=<% %>=}} * {{company}} <%={{ }}=%> ``` Output: ```html * Chris * * &lt;b&gt;GitHub&lt;/b&gt; * <b>GitHub</b> * <b>GitHub</b> * {{company}} ``` JavaScript's dot notation may be used to access keys that are properties of objects in a view. View: ```json { "name": { "first": "Michael", "last": "Jackson" }, "age": "RIP" } ``` Template: ```html * {{name.first}} {{name.last}} * {{age}} ``` Output: ```html * Michael Jackson * RIP ``` ### Sections Sections render blocks of text zero or more times, depending on the value of the key in the current context. A section begins with a pound and ends with a slash. That is, `{{#person}}` begins a `person` section, while `{{/person}}` ends it. The text between the two tags is referred to as that section's "block". The behavior of the section is determined by the value of the key. #### False Values or Empty Lists If the `person` key does not exist, or exists and has a value of `null`, `undefined`, `false`, `0`, or `NaN`, or is an empty string or an empty list, the block will not be rendered. View: ```json { "person": false } ``` Template: ```html Shown. {{#person}} Never shown! {{/person}} ``` Output: ```html Shown. ``` #### Non-Empty Lists If the `person` key exists and is not `null`, `undefined`, or `false`, and is not an empty list the block will be rendered one or more times. When the value is a list, the block is rendered once for each item in the list. The context of the block is set to the current item in the list for each iteration. In this way we can loop over collections. View: ```json { "stooges": [ { "name": "Moe" }, { "name": "Larry" }, { "name": "Curly" } ] } ``` Template: ```html {{#stooges}} <b>{{name}}</b> {{/stooges}} ``` Output: ```html <b>Moe</b> <b>Larry</b> <b>Curly</b> ``` When looping over an array of strings, a `.` can be used to refer to the current item in the list. View: ```json { "musketeers": ["Athos", "Aramis", "Porthos", "D'Artagnan"] } ``` Template: ```html {{#musketeers}} * {{.}} {{/musketeers}} ``` Output: ```html * Athos * Aramis * Porthos * D'Artagnan ``` If the value of a section variable is a function, it will be called in the context of the current item in the list on each iteration. View: ```js { "beatles": [ { "firstName": "John", "lastName": "Lennon" }, { "firstName": "Paul", "lastName": "McCartney" }, { "firstName": "George", "lastName": "Harrison" }, { "firstName": "Ringo", "lastName": "Starr" } ], "name": function () { return this.firstName + " " + this.lastName; } } ``` Template: ```html {{#beatles}} * {{name}} {{/beatles}} ``` Output: ```html * John Lennon * Paul McCartney * George Harrison * Ringo Starr ``` #### Functions If the value of a section key is a function, it is called with the section's literal block of text, un-rendered, as its first argument. The second argument is a special rendering function that uses the current view as its view argument. It is called in the context of the current view object. View: ```js { "name": "Tater", "bold": function () { return function (text, render) { return "<b>" + render(text) + "</b>"; } } } ``` Template: ```html {{#bold}}Hi {{name}}.{{/bold}} ``` Output: ```html <b>Hi Tater.</b> ``` ### Inverted Sections An inverted section opens with `{{^section}}` instead of `{{#section}}`. The block of an inverted section is rendered only if the value of that section's tag is `null`, `undefined`, `false`, *falsy* or an empty list. View: ```json { "repos": [] } ``` Template: ```html {{#repos}}<b>{{name}}</b>{{/repos}} {{^repos}}No repos :({{/repos}} ``` Output: ```html No repos :( ``` ### Comments Comments begin with a bang and are ignored. The following template: ```html <h1>Today{{! ignore me }}.</h1> ``` Will render as follows: ```html <h1>Today.</h1> ``` Comments may contain newlines. ### Partials Partials begin with a greater than sign, like {{> box}}. Partials are rendered at runtime (as opposed to compile time), so recursive partials are possible. Just avoid infinite loops. They also inherit the calling context. Whereas in ERB you may have this: ```html+erb <%= partial :next_more, :start => start, :size => size %> ``` Mustache requires only this: ```html {{> next_more}} ``` Why? Because the `next_more.mustache` file will inherit the `size` and `start` variables from the calling context. In this way you may want to think of partials as includes, imports, template expansion, nested templates, or subtemplates, even though those aren't literally the case here. For example, this template and partial: base.mustache: <h2>Names</h2> {{#names}} {{> user}} {{/names}} user.mustache: <strong>{{name}}</strong> Can be thought of as a single, expanded template: ```html <h2>Names</h2> {{#names}} <strong>{{name}}</strong> {{/names}} ``` In mustache.js an object of partials may be passed as the third argument to `Mustache.render`. The object should be keyed by the name of the partial, and its value should be the partial text. ```js Mustache.render(template, view, { user: userTemplate }); ``` ### Custom Delimiters Custom delimiters can be used in place of `{{` and `}}` by setting the new values in JavaScript or in templates. #### Setting in JavaScript The `Mustache.tags` property holds an array consisting of the opening and closing tag values. Set custom values by passing a new array of tags to `render()`, which gets honored over the default values, or by overriding the `Mustache.tags` property itself: ```js var customTags = [ '<%', '%>' ]; ``` ##### Pass Value into Render Method ```js Mustache.render(template, view, {}, customTags); ``` ##### Override Tags Property ```js Mustache.tags = customTags; // Subsequent parse() and render() calls will use customTags ``` #### Setting in Templates Set Delimiter tags start with an equals sign and change the tag delimiters from `{{` and `}}` to custom strings. Consider the following contrived example: ```html+erb * {{ default_tags }} {{=<% %>=}} * <% erb_style_tags %> <%={{ }}=%> * {{ default_tags_again }} ``` Here we have a list with three items. The first item uses the default tag style, the second uses ERB style as defined by the Set Delimiter tag, and the third returns to the default style after yet another Set Delimiter declaration. According to [ctemplates](https://htmlpreview.github.io/?https://raw.githubusercontent.com/OlafvdSpek/ctemplate/master/doc/howto.html), this "is useful for languages like TeX, where double-braces may occur in the text and are awkward to use for markup." Custom delimiters may not contain whitespace or the equals sign. ## Pre-parsing and Caching Templates By default, when mustache.js first parses a template it keeps the full parsed token tree in a cache. The next time it sees that same template it skips the parsing step and renders the template much more quickly. If you'd like, you can do this ahead of time using `mustache.parse`. ```js Mustache.parse(template); // Then, sometime later. Mustache.render(template, view); ``` ## Command line tool mustache.js is shipped with a Node.js based command line tool. It might be installed as a global tool on your computer to render a mustache template of some kind ```bash $ npm install -g mustache $ mustache dataView.json myTemplate.mustache > output.html ``` also supports stdin. ```bash $ cat dataView.json | mustache - myTemplate.mustache > output.html ``` or as a package.json `devDependency` in a build process maybe? ```bash $ npm install mustache --save-dev ``` ```json { "scripts": { "build": "mustache dataView.json myTemplate.mustache > public/output.html" } } ``` ```bash $ npm run build ``` The command line tool is basically a wrapper around `Mustache.render` so you get all the features. If your templates use partials you should pass paths to partials using `-p` flag: ```bash $ mustache -p path/to/partial1.mustache -p path/to/partial2.mustache dataView.json myTemplate.mustache ``` ## Plugins for JavaScript Libraries mustache.js may be built specifically for several different client libraries, including the following: - [jQuery](http://jquery.com/) - [MooTools](http://mootools.net/) - [Dojo](http://www.dojotoolkit.org/) - [YUI](http://developer.yahoo.com/yui/) - [qooxdoo](http://qooxdoo.org/) These may be built using [Rake](http://rake.rubyforge.org/) and one of the following commands: ```bash $ rake jquery $ rake mootools $ rake dojo $ rake yui3 $ rake qooxdoo ``` ## TypeScript Since the source code of this package is written in JavaScript, we follow the [TypeScript publishing docs](https://www.typescriptlang.org/docs/handbook/declaration-files/publishing.html) preferred approach by having type definitions available via [@types/mustache](https://www.npmjs.com/package/@types/mustache). ## Testing In order to run the tests you'll need to install [Node.js](http://nodejs.org/). You also need to install the sub module containing [Mustache specifications](http://github.com/mustache/spec) in the project root. ```bash $ git submodule init $ git submodule update ``` Install dependencies. ```bash $ npm install ``` Then run the tests. ```bash $ npm test ``` The test suite consists of both unit and integration tests. If a template isn't rendering correctly for you, you can make a test for it by doing the following: 1. Create a template file named `mytest.mustache` in the `test/_files` directory. Replace `mytest` with the name of your test. 2. Create a corresponding view file named `mytest.js` in the same directory. This file should contain a JavaScript object literal enclosed in parentheses. See any of the other view files for an example. 3. Create a file with the expected output in `mytest.txt` in the same directory. Then, you can run the test with: ```bash $ TEST=mytest npm run test-render ``` ### Browser tests Browser tests are not included in `npm test` as they run for too long, although they are ran automatically on Travis when merged into master. Run browser tests locally in any browser: ```bash $ npm run test-browser-local ``` then point your browser to `http://localhost:8080/__zuul` ## Who uses mustache.js? An updated list of mustache.js users is kept [on the Github wiki](https://github.com/janl/mustache.js/wiki/Beard-Competition). Add yourself or your company if you use mustache.js! ## Contributing mustache.js is a mature project, but it continues to actively invite maintainers. You can help out a high-profile project that is used in a lot of places on the web. No big commitment required, if all you do is review a single [Pull Request](https://github.com/janl/mustache.js/pulls), you are a maintainer. And a hero. ### Your First Contribution - review a [Pull Request](https://github.com/janl/mustache.js/pulls) - fix an [Issue](https://github.com/janl/mustache.js/issues) - update the [documentation](https://github.com/janl/mustache.js#usage) - make a website - write a tutorial ## Thanks mustache.js wouldn't kick ass if it weren't for these fine souls: * Chris Wanstrath / defunkt * Alexander Lang / langalex * Sebastian Cohnen / tisba * J Chris Anderson / jchris * Tom Robinson / tlrobinson * Aaron Quint / quirkey * Douglas Crockford * Nikita Vasilyev / NV * Elise Wood / glytch * Damien Mathieu / dmathieu * Jakub Kuźma / qoobaa * Will Leinweber / will * dpree * Jason Smith / jhs * Aaron Gibralter / agibralter * Ross Boucher / boucher * Matt Sanford / mzsanford * Ben Cherry / bcherry * Michael Jackson / mjackson * Phillip Johnsen / phillipj * David da Silva Contín / dasilvacontin # lodash.clonedeep v4.5.0 The [lodash](https://lodash.com/) method `_.cloneDeep` exported as a [Node.js](https://nodejs.org/) module. ## Installation Using npm: ```bash $ {sudo -H} npm i -g npm $ npm i --save lodash.clonedeep ``` In Node.js: ```js var cloneDeep = require('lodash.clonedeep'); ``` See the [documentation](https://lodash.com/docs#cloneDeep) or [package source](https://github.com/lodash/lodash/blob/4.5.0-npm-packages/lodash.clonedeep) for more details. An ini format parser and serializer for node. Sections are treated as nested objects. Items before the first heading are saved on the object directly. ## Usage Consider an ini-file `config.ini` that looks like this: ; this comment is being ignored scope = global [database] user = dbuser password = dbpassword database = use_this_database [paths.default] datadir = /var/lib/data array[] = first value array[] = second value array[] = third value You can read, manipulate and write the ini-file like so: var fs = require('fs') , ini = require('ini') var config = ini.parse(fs.readFileSync('./config.ini', 'utf-8')) config.scope = 'local' config.database.database = 'use_another_database' config.paths.default.tmpdir = '/tmp' delete config.paths.default.datadir config.paths.default.array.push('fourth value') fs.writeFileSync('./config_modified.ini', ini.stringify(config, { section: 'section' })) This will result in a file called `config_modified.ini` being written to the filesystem with the following content: [section] scope=local [section.database] user=dbuser password=dbpassword database=use_another_database [section.paths.default] tmpdir=/tmp array[]=first value array[]=second value array[]=third value array[]=fourth value ## API ### decode(inistring) Decode the ini-style formatted `inistring` into a nested object. ### parse(inistring) Alias for `decode(inistring)` ### encode(object, [options]) Encode the object `object` into an ini-style formatted string. If the optional parameter `section` is given, then all top-level properties of the object are put into this section and the `section`-string is prepended to all sub-sections, see the usage example above. The `options` object may contain the following: * `section` A string which will be the first `section` in the encoded ini data. Defaults to none. * `whitespace` Boolean to specify whether to put whitespace around the `=` character. By default, whitespace is omitted, to be friendly to some persnickety old parsers that don't tolerate it well. But some find that it's more human-readable and pretty with the whitespace. For backwards compatibility reasons, if a `string` options is passed in, then it is assumed to be the `section` value. ### stringify(object, [options]) Alias for `encode(object, [options])` ### safe(val) Escapes the string `val` such that it is safe to be used as a key or value in an ini-file. Basically escapes quotes. For example ini.safe('"unsafe string"') would result in "\"unsafe string\"" ### unsafe(val) Unescapes the string `val` # eslint-visitor-keys [](https://www.npmjs.com/package/eslint-visitor-keys) [](http://www.npmtrends.com/eslint-visitor-keys) [](https://travis-ci.org/eslint/eslint-visitor-keys) [](https://david-dm.org/eslint/eslint-visitor-keys) Constants and utilities about visitor keys to traverse AST. ## 💿 Installation Use [npm] to install. ```bash $ npm install eslint-visitor-keys ``` ### Requirements - [Node.js] 10.0.0 or later. ## 📖 Usage ```js const evk = require("eslint-visitor-keys") ``` ### evk.KEYS > type: `{ [type: string]: string[] | undefined }` Visitor keys. This keys are frozen. This is an object. Keys are the type of [ESTree] nodes. Their values are an array of property names which have child nodes. For example: ``` console.log(evk.KEYS.AssignmentExpression) // → ["left", "right"] ``` ### evk.getKeys(node) > type: `(node: object) => string[]` Get the visitor keys of a given AST node. This is similar to `Object.keys(node)` of ES Standard, but some keys are excluded: `parent`, `leadingComments`, `trailingComments`, and names which start with `_`. This will be used to traverse unknown nodes. For example: ``` const node = { type: "AssignmentExpression", left: { type: "Identifier", name: "foo" }, right: { type: "Literal", value: 0 } } console.log(evk.getKeys(node)) // → ["type", "left", "right"] ``` ### evk.unionWith(additionalKeys) > type: `(additionalKeys: object) => { [type: string]: string[] | undefined }` Make the union set with `evk.KEYS` and the given keys. - The order of keys is, `additionalKeys` is at first, then `evk.KEYS` is concatenated after that. - It removes duplicated keys as keeping the first one. For example: ``` console.log(evk.unionWith({ MethodDefinition: ["decorators"] })) // → { ..., MethodDefinition: ["decorators", "key", "value"], ... } ``` ## 📰 Change log See [GitHub releases](https://github.com/eslint/eslint-visitor-keys/releases). ## 🍻 Contributing Welcome. See [ESLint contribution guidelines](https://eslint.org/docs/developer-guide/contributing/). ### Development commands - `npm test` runs tests and measures code coverage. - `npm run lint` checks source codes with ESLint. - `npm run coverage` opens the code coverage report of the previous test with your default browser. - `npm run release` publishes this package to [npm] registory. [npm]: https://www.npmjs.com/ [Node.js]: https://nodejs.org/en/ [ESTree]: https://github.com/estree/estree # sprintf.js **sprintf.js** is a complete open source JavaScript sprintf implementation for the *browser* and *node.js*. Its prototype is simple: string sprintf(string format , [mixed arg1 [, mixed arg2 [ ,...]]]) The placeholders in the format string are marked by `%` and are followed by one or more of these elements, in this order: * An optional number followed by a `$` sign that selects which argument index to use for the value. If not specified, arguments will be placed in the same order as the placeholders in the input string. * An optional `+` sign that forces to preceed the result with a plus or minus sign on numeric values. By default, only the `-` sign is used on negative numbers. * An optional padding specifier that says what character to use for padding (if specified). Possible values are `0` or any other character precedeed by a `'` (single quote). The default is to pad with *spaces*. * An optional `-` sign, that causes sprintf to left-align the result of this placeholder. The default is to right-align the result. * An optional number, that says how many characters the result should have. If the value to be returned is shorter than this number, the result will be padded. When used with the `j` (JSON) type specifier, the padding length specifies the tab size used for indentation. * An optional precision modifier, consisting of a `.` (dot) followed by a number, that says how many digits should be displayed for floating point numbers. When used with the `g` type specifier, it specifies the number of significant digits. When used on a string, it causes the result to be truncated. * A type specifier that can be any of: * `%` — yields a literal `%` character * `b` — yields an integer as a binary number * `c` — yields an integer as the character with that ASCII value * `d` or `i` — yields an integer as a signed decimal number * `e` — yields a float using scientific notation * `u` — yields an integer as an unsigned decimal number * `f` — yields a float as is; see notes on precision above * `g` — yields a float as is; see notes on precision above * `o` — yields an integer as an octal number * `s` — yields a string as is * `x` — yields an integer as a hexadecimal number (lower-case) * `X` — yields an integer as a hexadecimal number (upper-case) * `j` — yields a JavaScript object or array as a JSON encoded string ## JavaScript `vsprintf` `vsprintf` is the same as `sprintf` except that it accepts an array of arguments, rather than a variable number of arguments: vsprintf("The first 4 letters of the english alphabet are: %s, %s, %s and %s", ["a", "b", "c", "d"]) ## Argument swapping You can also swap the arguments. That is, the order of the placeholders doesn't have to match the order of the arguments. You can do that by simply indicating in the format string which arguments the placeholders refer to: sprintf("%2$s %3$s a %1$s", "cracker", "Polly", "wants") And, of course, you can repeat the placeholders without having to increase the number of arguments. ## Named arguments Format strings may contain replacement fields rather than positional placeholders. Instead of referring to a certain argument, you can now refer to a certain key within an object. Replacement fields are surrounded by rounded parentheses - `(` and `)` - and begin with a keyword that refers to a key: var user = { name: "Dolly" } sprintf("Hello %(name)s", user) // Hello Dolly Keywords in replacement fields can be optionally followed by any number of keywords or indexes: var users = [ {name: "Dolly"}, {name: "Molly"}, {name: "Polly"} ] sprintf("Hello %(users[0].name)s, %(users[1].name)s and %(users[2].name)s", {users: users}) // Hello Dolly, Molly and Polly Note: mixing positional and named placeholders is not (yet) supported ## Computed values You can pass in a function as a dynamic value and it will be invoked (with no arguments) in order to compute the value on-the-fly. sprintf("Current timestamp: %d", Date.now) // Current timestamp: 1398005382890 sprintf("Current date and time: %s", function() { return new Date().toString() }) # AngularJS You can now use `sprintf` and `vsprintf` (also aliased as `fmt` and `vfmt` respectively) in your AngularJS projects. See `demo/`. # Installation ## Via Bower bower install sprintf ## Or as a node.js module npm install sprintf-js ### Usage var sprintf = require("sprintf-js").sprintf, vsprintf = require("sprintf-js").vsprintf sprintf("%2$s %3$s a %1$s", "cracker", "Polly", "wants") vsprintf("The first 4 letters of the english alphabet are: %s, %s, %s and %s", ["a", "b", "c", "d"]) # License **sprintf.js** is licensed under the terms of the 3-clause BSD license. # sha.js [](https://www.npmjs.org/package/sha.js) [](https://travis-ci.org/crypto-browserify/sha.js) [](https://david-dm.org/crypto-browserify/sha.js#info=dependencies) [](https://github.com/feross/standard) Node style `SHA` on pure JavaScript. ```js var shajs = require('sha.js') console.log(shajs('sha256').update('42').digest('hex')) // => 73475cb40a568e8da8a045ced110137e159f890ac4da883b6b17dc651b3a8049 console.log(new shajs.sha256().update('42').digest('hex')) // => 73475cb40a568e8da8a045ced110137e159f890ac4da883b6b17dc651b3a8049 var sha256stream = shajs('sha256') sha256stream.end('42') console.log(sha256stream.read().toString('hex')) // => 73475cb40a568e8da8a045ced110137e159f890ac4da883b6b17dc651b3a8049 ``` ## supported hashes `sha.js` currently implements: - SHA (SHA-0) -- **legacy, do not use in new systems** - SHA-1 -- **legacy, do not use in new systems** - SHA-224 - SHA-256 - SHA-384 - SHA-512 ## Not an actual stream Note, this doesn't actually implement a stream, but wrapping this in a stream is trivial. It does update incrementally, so you can hash things larger than RAM, as it uses a constant amount of memory (except when using base64 or utf8 encoding, see code comments). ## Acknowledgements This work is derived from Paul Johnston's [A JavaScript implementation of the Secure Hash Algorithm](http://pajhome.org.uk/crypt/md5/sha1.html). ## LICENSE [MIT](LICENSE) [](https://www.npmjs.com/package/espree) [](https://travis-ci.org/eslint/espree) [](https://www.npmjs.com/package/espree) [](https://www.bountysource.com/trackers/9348450-eslint?utm_source=9348450&utm_medium=shield&utm_campaign=TRACKER_BADGE) # Espree Espree started out as a fork of [Esprima](http://esprima.org) v1.2.2, the last stable published released of Esprima before work on ECMAScript 6 began. Espree is now built on top of [Acorn](https://github.com/ternjs/acorn), which has a modular architecture that allows extension of core functionality. The goal of Espree is to produce output that is similar to Esprima with a similar API so that it can be used in place of Esprima. ## Usage Install: ``` npm i espree ``` And in your Node.js code: ```javascript const espree = require("espree"); const ast = espree.parse(code); ``` ## API ### `parse()` `parse` parses the given code and returns a abstract syntax tree (AST). It takes two parameters. - `code` [string]() - the code which needs to be parsed. - `options (Optional)` [Object]() - read more about this [here](#options). ```javascript const espree = require("espree"); const ast = espree.parse(code, options); ``` **Example :** ```js const ast = espree.parse('let foo = "bar"', { ecmaVersion: 6 }); console.log(ast); ``` <details><summary>Output</summary> <p> ``` Node { type: 'Program', start: 0, end: 15, body: [ Node { type: 'VariableDeclaration', start: 0, end: 15, declarations: [Array], kind: 'let' } ], sourceType: 'script' } ``` </p> </details> ### `tokenize()` `tokenize` returns the tokens of a given code. It takes two parameters. - `code` [string]() - the code which needs to be parsed. - `options (Optional)` [Object]() - read more about this [here](#options). Even if `options` is empty or undefined or `options.tokens` is `false`, it assigns it to `true` in order to get the `tokens` array **Example :** ```js const tokens = espree.tokenize('let foo = "bar"', { ecmaVersion: 6 }); console.log(tokens); ``` <details><summary>Output</summary> <p> ``` Token { type: 'Keyword', value: 'let', start: 0, end: 3 }, Token { type: 'Identifier', value: 'foo', start: 4, end: 7 }, Token { type: 'Punctuator', value: '=', start: 8, end: 9 }, Token { type: 'String', value: '"bar"', start: 10, end: 15 } ``` </p> </details> ### `version` Returns the current `espree` version ### `VisitorKeys` Returns all visitor keys for traversing the AST from [eslint-visitor-keys](https://github.com/eslint/eslint-visitor-keys) ### `latestEcmaVersion` Returns the latest ECMAScript supported by `espree` ### `supportedEcmaVersions` Returns an array of all supported ECMAScript versions ## Options ```js const options = { // attach range information to each node range: false, // attach line/column location information to each node loc: false, // create a top-level comments array containing all comments comment: false, // create a top-level tokens array containing all tokens tokens: false, // Set to 3, 5 (default), 6, 7, 8, 9, 10, 11, or 12 to specify the version of ECMAScript syntax you want to use. // You can also set to 2015 (same as 6), 2016 (same as 7), 2017 (same as 8), 2018 (same as 9), 2019 (same as 10), 2020 (same as 11), or 2021 (same as 12) to use the year-based naming. ecmaVersion: 5, // specify which type of script you're parsing ("script" or "module") sourceType: "script", // specify additional language features ecmaFeatures: { // enable JSX parsing jsx: false, // enable return in global scope globalReturn: false, // enable implied strict mode (if ecmaVersion >= 5) impliedStrict: false } } ``` ## Esprima Compatibility Going Forward The primary goal is to produce the exact same AST structure and tokens as Esprima, and that takes precedence over anything else. (The AST structure being the [ESTree](https://github.com/estree/estree) API with JSX extensions.) Separate from that, Espree may deviate from what Esprima outputs in terms of where and how comments are attached, as well as what additional information is available on AST nodes. That is to say, Espree may add more things to the AST nodes than Esprima does but the overall AST structure produced will be the same. Espree may also deviate from Esprima in the interface it exposes. ## Contributing Issues and pull requests will be triaged and responded to as quickly as possible. We operate under the [ESLint Contributor Guidelines](http://eslint.org/docs/developer-guide/contributing), so please be sure to read them before contributing. If you're not sure where to dig in, check out the [issues](https://github.com/eslint/espree/issues). Espree is licensed under a permissive BSD 2-clause license. ## Security Policy We work hard to ensure that Espree is safe for everyone and that security issues are addressed quickly and responsibly. Read the full [security policy](https://github.com/eslint/.github/blob/master/SECURITY.md). ## Build Commands * `npm test` - run all linting and tests * `npm run lint` - run all linting * `npm run browserify` - creates a version of Espree that is usable in a browser ## Differences from Espree 2.x * The `tokenize()` method does not use `ecmaFeatures`. Any string will be tokenized completely based on ECMAScript 6 semantics. * Trailing whitespace no longer is counted as part of a node. * `let` and `const` declarations are no longer parsed by default. You must opt-in by using an `ecmaVersion` newer than `5` or setting `sourceType` to `module`. * The `esparse` and `esvalidate` binary scripts have been removed. * There is no `tolerant` option. We will investigate adding this back in the future. ## Known Incompatibilities In an effort to help those wanting to transition from other parsers to Espree, the following is a list of noteworthy incompatibilities with other parsers. These are known differences that we do not intend to change. ### Esprima 1.2.2 * Esprima counts trailing whitespace as part of each AST node while Espree does not. In Espree, the end of a node is where the last token occurs. * Espree does not parse `let` and `const` declarations by default. * Error messages returned for parsing errors are different. * There are two addition properties on every node and token: `start` and `end`. These represent the same data as `range` and are used internally by Acorn. ### Esprima 2.x * Esprima 2.x uses a different comment attachment algorithm that results in some comments being added in different places than Espree. The algorithm Espree uses is the same one used in Esprima 1.2.2. ## Frequently Asked Questions ### Why another parser [ESLint](http://eslint.org) had been relying on Esprima as its parser from the beginning. While that was fine when the JavaScript language was evolving slowly, the pace of development increased dramatically and Esprima had fallen behind. ESLint, like many other tools reliant on Esprima, has been stuck in using new JavaScript language features until Esprima updates, and that caused our users frustration. We decided the only way for us to move forward was to create our own parser, bringing us inline with JSHint and JSLint, and allowing us to keep implementing new features as we need them. We chose to fork Esprima instead of starting from scratch in order to move as quickly as possible with a compatible API. With Espree 2.0.0, we are no longer a fork of Esprima but rather a translation layer between Acorn and Esprima syntax. This allows us to put work back into a community-supported parser (Acorn) that is continuing to grow and evolve while maintaining an Esprima-compatible parser for those utilities still built on Esprima. ### Have you tried working with Esprima? Yes. Since the start of ESLint, we've regularly filed bugs and feature requests with Esprima and will continue to do so. However, there are some different philosophies around how the projects work that need to be worked through. The initial goal was to have Espree track Esprima and eventually merge the two back together, but we ultimately decided that building on top of Acorn was a better choice due to Acorn's plugin support. ### Why don't you just use Acorn? Acorn is a great JavaScript parser that produces an AST that is compatible with Esprima. Unfortunately, ESLint relies on more than just the AST to do its job. It relies on Esprima's tokens and comment attachment features to get a complete picture of the source code. We investigated switching to Acorn, but the inconsistencies between Esprima and Acorn created too much work for a project like ESLint. We are building on top of Acorn, however, so that we can contribute back and help make Acorn even better. ### What ECMAScript features do you support? Espree supports all ECMAScript 2020 features and partially supports ECMAScript 2021 features. Because ECMAScript 2021 is still under development, we are implementing features as they are finalized. Currently, Espree supports: * [Logical Assignment Operators](https://github.com/tc39/proposal-logical-assignment) * [Numeric Separators](https://github.com/tc39/proposal-numeric-separator) See [finished-proposals.md](https://github.com/tc39/proposals/blob/master/finished-proposals.md) to know what features are finalized. ### How do you determine which experimental features to support? In general, we do not support experimental JavaScript features. We may make exceptions from time to time depending on the maturity of the features. tunnel-agent ============ HTTP proxy tunneling agent. Formerly part of mikeal/request, now a standalone module. # lodash v4.17.21 The [Lodash](https://lodash.com/) library exported as [Node.js](https://nodejs.org/) modules. ## Installation Using npm: ```shell $ npm i -g npm $ npm i --save lodash ``` In Node.js: ```js // Load the full build. var _ = require('lodash'); // Load the core build. var _ = require('lodash/core'); // Load the FP build for immutable auto-curried iteratee-first data-last methods. var fp = require('lodash/fp'); // Load method categories. var array = require('lodash/array'); var object = require('lodash/fp/object'); // Cherry-pick methods for smaller browserify/rollup/webpack bundles. var at = require('lodash/at'); var curryN = require('lodash/fp/curryN'); ``` See the [package source](https://github.com/lodash/lodash/tree/4.17.21-npm) for more details. **Note:**<br> Install [n_](https://www.npmjs.com/package/n_) for Lodash use in the Node.js < 6 REPL. ## Support Tested in Chrome 74-75, Firefox 66-67, IE 11, Edge 18, Safari 11-12, & Node.js 8-12.<br> Automated [browser](https://saucelabs.com/u/lodash) & [CI](https://travis-ci.org/lodash/lodash/) test runs are available. These files are compiled dot templates from dot folder. Do NOT edit them directly, edit the templates and run `npm run build` from main ajv folder. # isarray `Array#isArray` for older browsers. [](http://travis-ci.org/juliangruber/isarray) [](https://www.npmjs.org/package/isarray) [ ](https://ci.testling.com/juliangruber/isarray) ## Usage ```js var isArray = require('isarray'); console.log(isArray([])); // => true console.log(isArray({})); // => false ``` ## Installation With [npm](http://npmjs.org) do ```bash $ npm install isarray ``` Then bundle for the browser with [browserify](https://github.com/substack/browserify). With [component](http://component.io) do ```bash $ component install juliangruber/isarray ``` ## License (MIT) Copyright (c) 2013 Julian Gruber &lt;julian@juliangruber.com&gt; Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ### Esrecurse [](https://travis-ci.org/estools/esrecurse) Esrecurse ([esrecurse](https://github.com/estools/esrecurse)) is [ECMAScript](https://www.ecma-international.org/publications/standards/Ecma-262.htm) recursive traversing functionality. ### Example Usage The following code will output all variables declared at the root of a file. ```javascript esrecurse.visit(ast, { XXXStatement: function (node) { this.visit(node.left); // do something... this.visit(node.right); } }); ``` We can use `Visitor` instance. ```javascript var visitor = new esrecurse.Visitor({ XXXStatement: function (node) { this.visit(node.left); // do something... this.visit(node.right); } }); visitor.visit(ast); ``` We can inherit `Visitor` instance easily. ```javascript class Derived extends esrecurse.Visitor { constructor() { super(null); } XXXStatement(node) { } } ``` ```javascript function DerivedVisitor() { esrecurse.Visitor.call(/* this for constructor */ this /* visitor object automatically becomes this. */); } util.inherits(DerivedVisitor, esrecurse.Visitor); DerivedVisitor.prototype.XXXStatement = function (node) { this.visit(node.left); // do something... this.visit(node.right); }; ``` And you can invoke default visiting operation inside custom visit operation. ```javascript function DerivedVisitor() { esrecurse.Visitor.call(/* this for constructor */ this /* visitor object automatically becomes this. */); } util.inherits(DerivedVisitor, esrecurse.Visitor); DerivedVisitor.prototype.XXXStatement = function (node) { // do something... this.visitChildren(node); }; ``` The `childVisitorKeys` option does customize the behaviour of `this.visitChildren(node)`. We can use user-defined node types. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; esrecurse.visit( ast, { Literal: function (node) { // do something... } }, { // Extending the existing traversing rules. childVisitorKeys: { // TargetNodeName: [ 'keys', 'containing', 'the', 'other', '**node**' ] TestExpression: ['argument'] } } ); ``` We can use the `fallback` option as well. If the `fallback` option is `"iteration"`, `esrecurse` would visit all enumerable properties of unknown nodes. Please note circular references cause the stack overflow. AST might have circular references in additional properties for some purpose (e.g. `node.parent`). ```javascript esrecurse.visit( ast, { Literal: function (node) { // do something... } }, { fallback: 'iteration' } ); ``` If the `fallback` option is a function, `esrecurse` calls this function to determine the enumerable properties of unknown nodes. Please note circular references cause the stack overflow. AST might have circular references in additional properties for some purpose (e.g. `node.parent`). ```javascript esrecurse.visit( ast, { Literal: function (node) { // do something... } }, { fallback: function (node) { return Object.keys(node).filter(function(key) { return key !== 'argument' }); } } ); ``` ### License Copyright (C) 2014 [Yusuke Suzuki](https://github.com/Constellation) (twitter: [@Constellation](https://twitter.com/Constellation)) and other contributors. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # AssemblyScript Loader A convenient loader for [AssemblyScript](https://assemblyscript.org) modules. Demangles module exports to a friendly object structure compatible with TypeScript definitions and provides useful utility to read/write data from/to memory. [Documentation](https://assemblyscript.org/loader.html) # duplexer3 [](https://travis-ci.org/floatdrop/duplexer3) [](https://coveralls.io/github/floatdrop/duplexer3?branch=master) Like [duplexer2](https://github.com/deoxxa/duplexer2) but using Streams3 without readable-stream dependency ```javascript var stream = require("stream"); var duplexer3 = require("duplexer3"); var writable = new stream.Writable({objectMode: true}), readable = new stream.Readable({objectMode: true}); writable._write = function _write(input, encoding, done) { if (readable.push(input)) { return done(); } else { readable.once("drain", done); } }; readable._read = function _read(n) { // no-op }; // simulate the readable thing closing after a bit writable.once("finish", function() { setTimeout(function() { readable.push(null); }, 500); }); var duplex = duplexer3(writable, readable); duplex.on("data", function(e) { console.log("got data", JSON.stringify(e)); }); duplex.on("finish", function() { console.log("got finish event"); }); duplex.on("end", function() { console.log("got end event"); }); duplex.write("oh, hi there", function() { console.log("finished writing"); }); duplex.end(function() { console.log("finished ending"); }); ``` ``` got data "oh, hi there" finished writing got finish event finished ending got end event ``` ## Overview This is a reimplementation of [duplexer](https://www.npmjs.com/package/duplexer) using the Streams3 API which is standard in Node as of v4. Everything largely works the same. ## Installation [Available via `npm`](https://docs.npmjs.com/cli/install): ``` $ npm i duplexer3 ``` ## API ### duplexer3 Creates a new `DuplexWrapper` object, which is the actual class that implements most of the fun stuff. All that fun stuff is hidden. DON'T LOOK. ```javascript duplexer3([options], writable, readable) ``` ```javascript const duplex = duplexer3(new stream.Writable(), new stream.Readable()); ``` Arguments * __options__ - an object specifying the regular `stream.Duplex` options, as well as the properties described below. * __writable__ - a writable stream * __readable__ - a readable stream Options * __bubbleErrors__ - a boolean value that specifies whether to bubble errors from the underlying readable/writable streams. Default is `true`. ## License 3-clause BSD. [A copy](./LICENSE) is included with the source. ## Contact * GitHub ([deoxxa](http://github.com/deoxxa)) * Twitter ([@deoxxa](http://twitter.com/deoxxa)) * Email ([deoxxa@fknsrs.biz](mailto:deoxxa@fknsrs.biz)) # node-gyp-build > Build tool and bindings loader for [`node-gyp`][node-gyp] that supports prebuilds. ``` npm install node-gyp-build ``` [](https://github.com/prebuild/node-gyp-build/actions/workflows/test.yml) Use together with [`prebuildify`][prebuildify] to easily support prebuilds for your native modules. ## Usage > **Note.** Prebuild names have changed in [`prebuildify@3`][prebuildify] and `node-gyp-build@4`. Please see the documentation below. `node-gyp-build` works similar to [`node-gyp build`][node-gyp] except that it will check if a build or prebuild is present before rebuilding your project. It's main intended use is as an npm install script and bindings loader for native modules that bundle prebuilds using [`prebuildify`][prebuildify]. First add `node-gyp-build` as an install script to your native project ``` js { ... "scripts": { "install": "node-gyp-build" } } ``` Then in your `index.js`, instead of using the [`bindings`](https://www.npmjs.com/package/bindings) module use `node-gyp-build` to load your binding. ``` js var binding = require('node-gyp-build')(__dirname) ``` If you do these two things and bundle prebuilds with [`prebuildify`][prebuildify] your native module will work for most platforms without having to compile on install time AND will work in both node and electron without the need to recompile between usage. Users can override `node-gyp-build` and force compiling by doing `npm install --build-from-source`. Prebuilds will be attempted loaded from `MODULE_PATH/prebuilds/...` and then next `EXEC_PATH/prebuilds/...` (the latter allowing use with `zeit/pkg`) ## Supported prebuild names If so desired you can bundle more specific flavors, for example `musl` builds to support Alpine, or targeting a numbered ARM architecture version. These prebuilds can be bundled in addition to generic prebuilds; `node-gyp-build` will try to find the most specific flavor first. Prebuild filenames are composed of _tags_. The runtime tag takes precedence, as does an `abi` tag over `napi`. For more details on tags, please see [`prebuildify`][prebuildify]. Values for the `libc` and `armv` tags are auto-detected but can be overridden through the `LIBC` and `ARM_VERSION` environment variables, respectively. ## License MIT [prebuildify]: https://github.com/prebuild/prebuildify [node-gyp]: https://www.npmjs.com/package/node-gyp # Tools ## clang-format The clang-format checking tools is designed to check changed lines of code compared to given git-refs. ## Migration Script The migration tool is designed to reduce repetitive work in the migration process. However, the script is not aiming to convert every thing for you. There are usually some small fixes and major reconstruction required. ### How To Use To run the conversion script, first make sure you have the latest `node-addon-api` in your `node_modules` directory. ``` npm install node-addon-api ``` Then run the script passing your project directory ``` node ./node_modules/node-addon-api/tools/conversion.js ./ ``` After finish, recompile and debug things that are missed by the script. ### Quick Fixes Here is the list of things that can be fixed easily. 1. Change your methods' return value to void if it doesn't return value to JavaScript. 2. Use `.` to access attribute or to invoke member function in Napi::Object instead of `->`. 3. `Napi::New(env, value);` to `Napi::[Type]::New(env, value); ### Major Reconstructions The implementation of `Napi::ObjectWrap` is significantly different from NAN's. `Napi::ObjectWrap` takes a pointer to the wrapped object and creates a reference to the wrapped object inside ObjectWrap constructor. `Napi::ObjectWrap` also associates wrapped object's instance methods to Javascript module instead of static methods like NAN. So if you use Nan::ObjectWrap in your module, you will need to execute the following steps. 1. Convert your [ClassName]::New function to a constructor function that takes a `Napi::CallbackInfo`. Declare it as ``` [ClassName](const Napi::CallbackInfo& info); ``` and define it as ``` [ClassName]::[ClassName](const Napi::CallbackInfo& info) : Napi::ObjectWrap<[ClassName]>(info){ ... } ``` This way, the `Napi::ObjectWrap` constructor will be invoked after the object has been instantiated and `Napi::ObjectWrap` can use the `this` pointer to create a reference to the wrapped object. 2. Move your original constructor code into the new constructor. Delete your original constructor. 3. In your class initialization function, associate native methods in the following way. ``` Napi::FunctionReference constructor; void [ClassName]::Init(Napi::Env env, Napi::Object exports, Napi::Object module) { Napi::HandleScope scope(env); Napi::Function ctor = DefineClass(env, "Canvas", { InstanceMethod<&[ClassName]::Func1>("Func1"), InstanceMethod<&[ClassName]::Func2>("Func2"), InstanceAccessor<&[ClassName]::ValueGetter>("Value"), StaticMethod<&[ClassName]::StaticMethod>("MethodName"), InstanceValue("Value", Napi::[Type]::New(env, value)), }); constructor = Napi::Persistent(ctor); constructor .SuppressDestruct(); exports.Set("[ClassName]", ctor); } ``` 4. In function where you need to Unwrap the ObjectWrap in NAN like `[ClassName]* native = Nan::ObjectWrap::Unwrap<[ClassName]>(info.This());`, use `this` pointer directly as the unwrapped object as each ObjectWrap instance is associated with a unique object instance. If you still find issues after following this guide, please leave us an issue describing your problem and we will try to resolve it. <p align="center"> <img width="250" src="https://raw.githubusercontent.com/yargs/yargs/master/yargs-logo.png"> </p> <h1 align="center"> Yargs </h1> <p align="center"> <b >Yargs be a node.js library fer hearties tryin' ter parse optstrings</b> </p> <br>  [![NPM version][npm-image]][npm-url] [![js-standard-style][standard-image]][standard-url] [![Coverage][coverage-image]][coverage-url] [![Conventional Commits][conventional-commits-image]][conventional-commits-url] [![Slack][slack-image]][slack-url] ## Description Yargs helps you build interactive command line tools, by parsing arguments and generating an elegant user interface. It gives you: * commands and (grouped) options (`my-program.js serve --port=5000`). * a dynamically generated help menu based on your arguments: ``` mocha [spec..] Run tests with Mocha Commands mocha inspect [spec..] Run tests with Mocha [default] mocha init <path> create a client-side Mocha setup at <path> Rules & Behavior --allow-uncaught Allow uncaught errors to propagate [boolean] --async-only, -A Require all tests to use a callback (async) or return a Promise [boolean] ``` * bash-completion shortcuts for commands and options. * and [tons more](/docs/api.md). ## Installation Stable version: ```bash npm i yargs ``` Bleeding edge version with the most recent features: ```bash npm i yargs@next ``` ## Usage ### Simple Example ```javascript #!/usr/bin/env node const yargs = require('yargs/yargs') const { hideBin } = require('yargs/helpers') const argv = yargs(hideBin(process.argv)).argv if (argv.ships > 3 && argv.distance < 53.5) { console.log('Plunder more riffiwobbles!') } else { console.log('Retreat from the xupptumblers!') } ``` ```bash $ ./plunder.js --ships=4 --distance=22 Plunder more riffiwobbles! $ ./plunder.js --ships 12 --distance 98.7 Retreat from the xupptumblers! ``` ### Complex Example ```javascript #!/usr/bin/env node const yargs = require('yargs/yargs') const { hideBin } = require('yargs/helpers') yargs(hideBin(process.argv)) .command('serve [port]', 'start the server', (yargs) => { yargs .positional('port', { describe: 'port to bind on', default: 5000 }) }, (argv) => { if (argv.verbose) console.info(`start server on :${argv.port}`) serve(argv.port) }) .option('verbose', { alias: 'v', type: 'boolean', description: 'Run with verbose logging' }) .argv ``` Run the example above with `--help` to see the help for the application. ## Supported Platforms ### TypeScript yargs has type definitions at [@types/yargs][type-definitions]. ``` npm i @types/yargs --save-dev ``` See usage examples in [docs](/docs/typescript.md). ### Deno As of `v16`, `yargs` supports [Deno](https://github.com/denoland/deno): ```typescript import yargs from 'https://deno.land/x/yargs/deno.ts' import { Arguments } from 'https://deno.land/x/yargs/deno-types.ts' yargs(Deno.args) .command('download <files...>', 'download a list of files', (yargs: any) => { return yargs.positional('files', { describe: 'a list of files to do something with' }) }, (argv: Arguments) => { console.info(argv) }) .strictCommands() .demandCommand(1) .argv ``` ### ESM As of `v16`,`yargs` supports ESM imports: ```js import yargs from 'yargs' import { hideBin } from 'yargs/helpers' yargs(hideBin(process.argv)) .command('curl <url>', 'fetch the contents of the URL', () => {}, (argv) => { console.info(argv) }) .demandCommand(1) .argv ``` ### Usage in Browser See examples of using yargs in the browser in [docs](/docs/browser.md). ## Community Having problems? want to contribute? join our [community slack](http://devtoolscommunity.herokuapp.com). ## Documentation ### Table of Contents * [Yargs' API](/docs/api.md) * [Examples](/docs/examples.md) * [Parsing Tricks](/docs/tricks.md) * [Stop the Parser](/docs/tricks.md#stop) * [Negating Boolean Arguments](/docs/tricks.md#negate) * [Numbers](/docs/tricks.md#numbers) * [Arrays](/docs/tricks.md#arrays) * [Objects](/docs/tricks.md#objects) * [Quotes](/docs/tricks.md#quotes) * [Advanced Topics](/docs/advanced.md) * [Composing Your App Using Commands](/docs/advanced.md#commands) * [Building Configurable CLI Apps](/docs/advanced.md#configuration) * [Customizing Yargs' Parser](/docs/advanced.md#customizing) * [Bundling yargs](/docs/bundling.md) * [Contributing](/contributing.md) ## Supported Node.js Versions Libraries in this ecosystem make a best effort to track [Node.js' release schedule](https://nodejs.org/en/about/releases/). Here's [a post on why we think this is important](https://medium.com/the-node-js-collection/maintainers-should-consider-following-node-js-release-schedule-ab08ed4de71a). [npm-url]: https://www.npmjs.com/package/yargs [npm-image]: https://img.shields.io/npm/v/yargs.svg [standard-image]: https://img.shields.io/badge/code%20style-standard-brightgreen.svg [standard-url]: http://standardjs.com/ [conventional-commits-image]: https://img.shields.io/badge/Conventional%20Commits-1.0.0-yellow.svg [conventional-commits-url]: https://conventionalcommits.org/ [slack-image]: http://devtoolscommunity.herokuapp.com/badge.svg [slack-url]: http://devtoolscommunity.herokuapp.com [type-definitions]: https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/yargs [coverage-image]: https://img.shields.io/nycrc/yargs/yargs [coverage-url]: https://github.com/yargs/yargs/blob/master/.nycrc ## assemblyscript-temporal An implementation of temporal within AssemblyScript, with an initial focus on non-timezone-aware classes and functionality. ### Why? AssemblyScript has minimal `Date` support, however, the JS Date API itself is terrible and people tend not to use it that often. As a result libraries like moment / luxon have become staple replacements. However, there is now a [relatively mature TC39 proposal](https://github.com/tc39/proposal-temporal) that adds greatly improved date support to JS. The goal of this project is to implement Temporal for AssemblyScript. ### Usage This library currently supports the following types: #### `PlainDateTime` A `PlainDateTime` represents a calendar date and wall-clock time that does not carry time zone information, e.g. December 7th, 1995 at 3:00 PM (in the Gregorian calendar). For detailed documentation see the [TC39 Temporal proposal website](https://tc39.es/proposal-temporal/docs/plaindatetime.html), this implementation follows the specification as closely as possible. You can create a `PlainDateTime` from individual components, a string or an object literal: ```javascript datetime = new PlainDateTime(1976, 11, 18, 15, 23, 30, 123, 456, 789); datetime.year; // 2019; datetime.month; // 11; // ... datetime.nanosecond; // 789; datetime = PlainDateTime.from("1976-11-18T12:34:56"); datetime.toString(); // "1976-11-18T12:34:56" datetime = PlainDateTime.from({ year: 1966, month: 3, day: 3 }); datetime.toString(); // "1966-03-03T00:00:00" ``` There are various ways you can manipulate a date: ```javascript // use 'with' to copy a date but with various property values overriden datetime = new PlainDateTime(1976, 11, 18, 15, 23, 30, 123, 456, 789); datetime.with({ year: 2019 }).toString(); // "2019-11-18T15:23:30.123456789" // use 'add' or 'substract' to add / subtract a duration datetime = PlainDateTime.from("2020-01-12T15:00"); datetime.add({ months: 1 }).toString(); // "2020-02-12T15:00:00"); // add / subtract support Duration objects or object literals datetime.add(new Duration(1)).toString(); // "2021-01-12T15:00:00"); ``` You can compare dates and check for equality ```javascript dt1 = PlainDateTime.from("1976-11-18"); dt2 = PlainDateTime.from("2019-10-29"); PlainDateTime.compare(dt1, dt1); // 0 PlainDateTime.compare(dt1, dt2); // -1 dt1.equals(dt1); // true ``` Currently `PlainDateTime` only supports the ISO 8601 (Gregorian) calendar. #### `PlainDate` A `PlainDate` object represents a calendar date that is not associated with a particular time or time zone, e.g. August 24th, 2006. For detailed documentation see the [TC39 Temporal proposal website](https://tc39.es/proposal-temporal/docs/plaindate.html), this implementation follows the specification as closely as possible. The `PlainDate` API is almost identical to `PlainDateTime`, so see above for API usage examples. #### `PlainTime` A `PlainTime` object represents a wall-clock time that is not associated with a particular date or time zone, e.g. 7:39 PM. For detailed documentation see the [TC39 Temporal proposal website](https://tc39.es/proposal-temporal/docs/plaintime.html), this implementation follows the specification as closely as possible. The `PlainTime` API is almost identical to `PlainDateTime`, so see above for API usage examples. #### `PlainMonthDay` A date without a year component. This is useful to express things like "Bastille Day is on the 14th of July". For detailed documentation see the [TC39 Temporal proposal website](https://tc39.es/proposal-temporal/docs/plainmonthday.html) , this implementation follows the specification as closely as possible. ```javascript const monthDay = PlainMonthDay.from({ month: 7, day: 14 }); // => 07-14 const date = monthDay.toPlainDate({ year: 2030 }); // => 2030-07-14 date.dayOfWeek; // => 7 ``` The `PlainMonthDay` API is almost identical to `PlainDateTime`, so see above for more API usage examples. #### `PlainYearMonth` A date without a day component. This is useful to express things like "the October 2020 meeting". For detailed documentation see the [TC39 Temporal proposal website](https://tc39.es/proposal-temporal/docs/plainyearmonth.html) , this implementation follows the specification as closely as possible. The `PlainYearMonth` API is almost identical to `PlainDateTime`, so see above for API usage examples. #### `now` The `now` object has several methods which give information about the current time and date. ```javascript dateTime = now.plainDateTimeISO(); dateTime.toString(); // 2021-04-01T12:05:47.357 ``` ## Contributing This project is open source, MIT licensed and your contributions are very much welcomed. There is a [brief document that outlines implementation progress and priorities](./development.md). bs58 ==== [](https://travis-ci.org/cryptocoinjs/bs58) JavaScript component to compute base 58 encoding. This encoding is typically used for crypto currencies such as Bitcoin. **Note:** If you're looking for **base 58 check** encoding, see: [https://github.com/bitcoinjs/bs58check](https://github.com/bitcoinjs/bs58check), which depends upon this library. Install ------- npm i --save bs58 API --- ### encode(input) `input` must be a [Buffer](https://nodejs.org/api/buffer.html) or an `Array`. It returns a `string`. **example**: ```js const bs58 = require('bs58') const bytes = Buffer.from('003c176e659bea0f29a3e9bf7880c112b1b31b4dc826268187', 'hex') const address = bs58.encode(bytes) console.log(address) // => 16UjcYNBG9GTK4uq2f7yYEbuifqCzoLMGS ``` ### decode(input) `input` must be a base 58 encoded string. Returns a [Buffer](https://nodejs.org/api/buffer.html). **example**: ```js const bs58 = require('bs58') const address = '16UjcYNBG9GTK4uq2f7yYEbuifqCzoLMGS' const bytes = bs58.decode(address) console.log(out.toString('hex')) // => 003c176e659bea0f29a3e9bf7880c112b1b31b4dc826268187 ``` Hack / Test ----------- Uses JavaScript standard style. Read more: [](https://github.com/feross/standard) Credits ------- - [Mike Hearn](https://github.com/mikehearn) for original Java implementation - [Stefan Thomas](https://github.com/justmoon) for porting to JavaScript - [Stephan Pair](https://github.com/gasteve) for buffer improvements - [Daniel Cousens](https://github.com/dcousens) for cleanup and merging improvements from bitcoinjs-lib - [Jared Deckard](https://github.com/deckar01) for killing `bigi` as a dependency License ------- MIT # is-typedarray [](http://github.com/badges/stability-badges) Detect whether or not an object is a [Typed Array](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Typed_arrays). ## Usage [](https://nodei.co/npm/is-typedarray/) ### isTypedArray(array) Returns `true` when array is a Typed Array, and `false` when it is not. ## License MIT. See [LICENSE.md](http://github.com/hughsk/is-typedarray/blob/master/LICENSE.md) for details. # cliui [](https://travis-ci.org/yargs/cliui) [](https://coveralls.io/r/yargs/cliui?branch=) [](https://www.npmjs.com/package/cliui) [](https://github.com/conventional-changelog/standard-version) easily create complex multi-column command-line-interfaces. ## Example ```js var ui = require('cliui')() ui.div('Usage: $0 [command] [options]') ui.div({ text: 'Options:', padding: [2, 0, 2, 0] }) ui.div( { text: "-f, --file", width: 20, padding: [0, 4, 0, 4] }, { text: "the file to load." + chalk.green("(if this description is long it wraps).") , width: 20 }, { text: chalk.red("[required]"), align: 'right' } ) console.log(ui.toString()) ``` <img width="500" src="screenshot.png"> ## Layout DSL cliui exposes a simple layout DSL: If you create a single `ui.div`, passing a string rather than an object: * `\n`: characters will be interpreted as new rows. * `\t`: characters will be interpreted as new columns. * `\s`: characters will be interpreted as padding. **as an example...** ```js var ui = require('./')({ width: 60 }) ui.div( 'Usage: node ./bin/foo.js\n' + ' <regex>\t provide a regex\n' + ' <glob>\t provide a glob\t [required]' ) console.log(ui.toString()) ``` **will output:** ```shell Usage: node ./bin/foo.js <regex> provide a regex <glob> provide a glob [required] ``` ## Methods ```js cliui = require('cliui') ``` ### cliui({width: integer}) Specify the maximum width of the UI being generated. If no width is provided, cliui will try to get the current window's width and use it, and if that doesn't work, width will be set to `80`. ### cliui({wrap: boolean}) Enable or disable the wrapping of text in a column. ### cliui.div(column, column, column) Create a row with any number of columns, a column can either be a string, or an object with the following options: * **text:** some text to place in the column. * **width:** the width of a column. * **align:** alignment, `right` or `center`. * **padding:** `[top, right, bottom, left]`. * **border:** should a border be placed around the div? ### cliui.span(column, column, column) Similar to `div`, except the next row will be appended without a new line being created. ### cliui.resetOutput() Resets the UI elements of the current cliui instance, maintaining the values set for `width` and `wrap`. https-proxy-agent ================ ### An HTTP(s) proxy `http.Agent` implementation for HTTPS [](https://github.com/TooTallNate/node-https-proxy-agent/actions?workflow=Node+CI) This module provides an `http.Agent` implementation that connects to a specified HTTP or HTTPS proxy server, and can be used with the built-in `https` module. Specifically, this `Agent` implementation connects to an intermediary "proxy" server and issues the [CONNECT HTTP method][CONNECT], which tells the proxy to open a direct TCP connection to the destination server. Since this agent implements the CONNECT HTTP method, it also works with other protocols that use this method when connecting over proxies (i.e. WebSockets). See the "Examples" section below for more. Installation ------------ Install with `npm`: ``` bash $ npm install https-proxy-agent ``` Examples -------- #### `https` module example ``` js var url = require('url'); var https = require('https'); var HttpsProxyAgent = require('https-proxy-agent'); // HTTP/HTTPS proxy to connect to var proxy = process.env.http_proxy || 'http://168.63.76.32:3128'; console.log('using proxy server %j', proxy); // HTTPS endpoint for the proxy to connect to var endpoint = process.argv[2] || 'https://graph.facebook.com/tootallnate'; console.log('attempting to GET %j', endpoint); var options = url.parse(endpoint); // create an instance of the `HttpsProxyAgent` class with the proxy server information var agent = new HttpsProxyAgent(proxy); options.agent = agent; https.get(options, function (res) { console.log('"response" event!', res.headers); res.pipe(process.stdout); }); ``` #### `ws` WebSocket connection example ``` js var url = require('url'); var WebSocket = require('ws'); var HttpsProxyAgent = require('https-proxy-agent'); // HTTP/HTTPS proxy to connect to var proxy = process.env.http_proxy || 'http://168.63.76.32:3128'; console.log('using proxy server %j', proxy); // WebSocket endpoint for the proxy to connect to var endpoint = process.argv[2] || 'ws://echo.websocket.org'; var parsed = url.parse(endpoint); console.log('attempting to connect to WebSocket %j', endpoint); // create an instance of the `HttpsProxyAgent` class with the proxy server information var options = url.parse(proxy); var agent = new HttpsProxyAgent(options); // finally, initiate the WebSocket connection var socket = new WebSocket(endpoint, { agent: agent }); socket.on('open', function () { console.log('"open" event!'); socket.send('hello world'); }); socket.on('message', function (data, flags) { console.log('"message" event! %j %j', data, flags); socket.close(); }); ``` API --- ### new HttpsProxyAgent(Object options) The `HttpsProxyAgent` class implements an `http.Agent` subclass that connects to the specified "HTTP(s) proxy server" in order to proxy HTTPS and/or WebSocket requests. This is achieved by using the [HTTP `CONNECT` method][CONNECT]. The `options` argument may either be a string URI of the proxy server to use, or an "options" object with more specific properties: * `host` - String - Proxy host to connect to (may use `hostname` as well). Required. * `port` - Number - Proxy port to connect to. Required. * `protocol` - String - If `https:`, then use TLS to connect to the proxy. * `headers` - Object - Additional HTTP headers to be sent on the HTTP CONNECT method. * Any other options given are passed to the `net.connect()`/`tls.connect()` functions. License ------- (The MIT License) Copyright (c) 2013 Nathan Rajlich &lt;nathan@tootallnate.net&gt; Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. [CONNECT]: http://en.wikipedia.org/wiki/HTTP_tunnel#HTTP_CONNECT_Tunneling discontinuous-range =================== ``` DiscontinuousRange(1, 10).subtract(4, 6); // [ 1-3, 7-10 ] ``` [](https://travis-ci.org/dtudury/discontinuous-range) this is a pretty simple module, but it exists to service another project so this'll be pretty lacking documentation. reading the test to see how this works may help. otherwise, here's an example that I think pretty much sums it up ###Example ``` var all_numbers = new DiscontinuousRange(1, 100); var bad_numbers = DiscontinuousRange(13).add(8).add(60,80); var good_numbers = all_numbers.clone().subtract(bad_numbers); console.log(good_numbers.toString()); //[ 1-7, 9-12, 14-59, 81-100 ] var random_good_number = good_numbers.index(Math.floor(Math.random() * good_numbers.length)); ``` <p align="center"> <a href="https://assemblyscript.org" target="_blank" rel="noopener"><img width="100" src="https://avatars1.githubusercontent.com/u/28916798?s=200&v=4" alt="AssemblyScript logo"></a> </p> <p align="center"> <a href="https://github.com/AssemblyScript/assemblyscript/actions?query=workflow%3ATest"><img src="https://img.shields.io/github/workflow/status/AssemblyScript/assemblyscript/Test/main?label=test&logo=github" alt="Test status" /></a> <a href="https://github.com/AssemblyScript/assemblyscript/actions?query=workflow%3APublish"><img src="https://img.shields.io/github/workflow/status/AssemblyScript/assemblyscript/Publish/main?label=publish&logo=github" alt="Publish status" /></a> <a href="https://www.npmjs.com/package/assemblyscript"><img src="https://img.shields.io/npm/v/assemblyscript.svg?label=compiler&color=007acc&logo=npm" alt="npm compiler version" /></a> <a href="https://www.npmjs.com/package/@assemblyscript/loader"><img src="https://img.shields.io/npm/v/@assemblyscript/loader.svg?label=loader&color=007acc&logo=npm" alt="npm loader version" /></a> <a href="https://discord.gg/assemblyscript"><img src="https://img.shields.io/discord/721472913886281818.svg?label=&logo=discord&logoColor=ffffff&color=7389D8&labelColor=6A7EC2" alt="Discord online" /></a> </p> <p align="justify"><strong>AssemblyScript</strong> compiles a variant of <a href="http://www.typescriptlang.org">TypeScript</a> (basically JavaScript with types) to <a href="http://webassembly.org">WebAssembly</a> using <a href="https://github.com/WebAssembly/binaryen">Binaryen</a>. It generates lean and mean WebAssembly modules while being just an <code>npm install</code> away.</p> <h3 align="center"> <a href="https://assemblyscript.org">About</a> &nbsp;·&nbsp; <a href="https://assemblyscript.org/introduction.html">Introduction</a> &nbsp;·&nbsp; <a href="https://assemblyscript.org/quick-start.html">Quick&nbsp;start</a> &nbsp;·&nbsp; <a href="https://assemblyscript.org/examples.html">Examples</a> &nbsp;·&nbsp; <a href="https://assemblyscript.org/development.html">Development&nbsp;instructions</a> </h3> <br> <h2 align="center">Contributors</h2> <p align="center"> <a href="https://assemblyscript.org/#contributors"><img src="https://assemblyscript.org/contributors.svg" alt="Contributor logos" width="720" /></a> </p> <h2 align="center">Thanks to our sponsors!</h2> <p align="justify">Most of the core team members and most contributors do this open source work in their free time. If you use AssemblyScript for a serious task or plan to do so, and you'd like us to invest more time on it, <a href="https://opencollective.com/assemblyscript/donate" target="_blank" rel="noopener">please donate</a> to our <a href="https://opencollective.com/assemblyscript" target="_blank" rel="noopener">OpenCollective</a>. By sponsoring this project, your logo will show up below. Thank you so much for your support!</p> <p align="center"> <a href="https://assemblyscript.org/#sponsors"><img src="https://assemblyscript.org/sponsors.svg" alt="Sponsor logos" width="720" /></a> </p> util-deprecate ============== ### The Node.js `util.deprecate()` function with browser support In Node.js, this module simply re-exports the `util.deprecate()` function. In the web browser (i.e. via browserify), a browser-specific implementation of the `util.deprecate()` function is used. ## API A `deprecate()` function is the only thing exposed by this module. ``` javascript // setup: exports.foo = deprecate(foo, 'foo() is deprecated, use bar() instead'); // users see: foo(); // foo() is deprecated, use bar() instead foo(); foo(); ``` ## License (The MIT License) Copyright (c) 2014 Nathan Rajlich <nathan@tootallnate.net> Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # is-number [](https://www.npmjs.com/package/is-number) [](https://npmjs.org/package/is-number) [](https://npmjs.org/package/is-number) [](https://travis-ci.org/jonschlinkert/is-number) > Returns true if the value is a finite number. Please consider following this project's author, [Jon Schlinkert](https://github.com/jonschlinkert), and consider starring the project to show your :heart: and support. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save is-number ``` ## Why is this needed? In JavaScript, it's not always as straightforward as it should be to reliably check if a value is a number. It's common for devs to use `+`, `-`, or `Number()` to cast a string value to a number (for example, when values are returned from user input, regex matches, parsers, etc). But there are many non-intuitive edge cases that yield unexpected results: ```js console.log(+[]); //=> 0 console.log(+''); //=> 0 console.log(+' '); //=> 0 console.log(typeof NaN); //=> 'number' ``` This library offers a performant way to smooth out edge cases like these. ## Usage ```js const isNumber = require('is-number'); ``` See the [tests](./test.js) for more examples. ### true ```js isNumber(5e3); // true isNumber(0xff); // true isNumber(-1.1); // true isNumber(0); // true isNumber(1); // true isNumber(1.1); // true isNumber(10); // true isNumber(10.10); // true isNumber(100); // true isNumber('-1.1'); // true isNumber('0'); // true isNumber('012'); // true isNumber('0xff'); // true isNumber('1'); // true isNumber('1.1'); // true isNumber('10'); // true isNumber('10.10'); // true isNumber('100'); // true isNumber('5e3'); // true isNumber(parseInt('012')); // true isNumber(parseFloat('012')); // true ``` ### False Everything else is false, as you would expect: ```js isNumber(Infinity); // false isNumber(NaN); // false isNumber(null); // false isNumber(undefined); // false isNumber(''); // false isNumber(' '); // false isNumber('foo'); // false isNumber([1]); // false isNumber([]); // false isNumber(function () {}); // false isNumber({}); // false ``` ## Release history ### 7.0.0 * Refactor. Now uses `.isFinite` if it exists. * Performance is about the same as v6.0 when the value is a string or number. But it's now 3x-4x faster when the value is not a string or number. ### 6.0.0 * Optimizations, thanks to @benaadams. ### 5.0.0 **Breaking changes** * removed support for `instanceof Number` and `instanceof String` ## Benchmarks As with all benchmarks, take these with a grain of salt. See the [benchmarks](./benchmark/index.js) for more detail. ``` # all v7.0 x 413,222 ops/sec ±2.02% (86 runs sampled) v6.0 x 111,061 ops/sec ±1.29% (85 runs sampled) parseFloat x 317,596 ops/sec ±1.36% (86 runs sampled) fastest is 'v7.0' # string v7.0 x 3,054,496 ops/sec ±1.05% (89 runs sampled) v6.0 x 2,957,781 ops/sec ±0.98% (88 runs sampled) parseFloat x 3,071,060 ops/sec ±1.13% (88 runs sampled) fastest is 'parseFloat,v7.0' # number v7.0 x 3,146,895 ops/sec ±0.89% (89 runs sampled) v6.0 x 3,214,038 ops/sec ±1.07% (89 runs sampled) parseFloat x 3,077,588 ops/sec ±1.07% (87 runs sampled) fastest is 'v6.0' ``` ## About <details> <summary><strong>Contributing</strong></summary> Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). </details> <details> <summary><strong>Running Tests</strong></summary> Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` </details> <details> <summary><strong>Building docs</strong></summary> _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` </details> ### Related projects You might also be interested in these projects: * [is-plain-object](https://www.npmjs.com/package/is-plain-object): Returns true if an object was created by the `Object` constructor. | [homepage](https://github.com/jonschlinkert/is-plain-object "Returns true if an object was created by the `Object` constructor.") * [is-primitive](https://www.npmjs.com/package/is-primitive): Returns `true` if the value is a primitive. | [homepage](https://github.com/jonschlinkert/is-primitive "Returns `true` if the value is a primitive. ") * [isobject](https://www.npmjs.com/package/isobject): Returns true if the value is an object and not an array or null. | [homepage](https://github.com/jonschlinkert/isobject "Returns true if the value is an object and not an array or null.") * [kind-of](https://www.npmjs.com/package/kind-of): Get the native type of a value. | [homepage](https://github.com/jonschlinkert/kind-of "Get the native type of a value.") ### Contributors | **Commits** | **Contributor** | | --- | --- | | 49 | [jonschlinkert](https://github.com/jonschlinkert) | | 5 | [charlike-old](https://github.com/charlike-old) | | 1 | [benaadams](https://github.com/benaadams) | | 1 | [realityking](https://github.com/realityking) | ### Author **Jon Schlinkert** * [LinkedIn Profile](https://linkedin.com/in/jonschlinkert) * [GitHub Profile](https://github.com/jonschlinkert) * [Twitter Profile](https://twitter.com/jonschlinkert) ### License Copyright © 2018, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT License](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.6.0, on June 15, 2018._ # u3 - Utility Functions This lib contains utility functions for e3, dataflower and other projects. ## Documentation ### Installation ```bash npm install u3 ``` ```bash bower install u3 ``` #### Usage In this documentation I used the lib as follows: ```js var u3 = require("u3"), cache = u3.cache, eachCombination = u3.eachCombination; ``` ### Function wrappers #### cache The `cache(fn)` function caches the fn results, so by the next calls it will return the result of the first call. You can use different arguments, but they won't affect the return value. ```js var a = cache(function fn(x, y, z){ return x + y + z; }); console.log(a(1, 2, 3)); // 6 console.log(a()); // 6 console.log(a()); // 6 ``` It is possible to cache a value too. ```js var a = cache(1 + 2 + 3); console.log(a()); // 6 console.log(a()); // 6 console.log(a()); // 6 ``` ### Math #### eachCombination The `eachCombination(alternativesByDimension, callback)` calls the `callback(a,b,c,...)` on each combination of the `alternatives[a[],b[],c[],...]`. ```js eachCombination([ [1, 2, 3], ["a", "b"] ], console.log); /* 1, "a" 1, "b" 2, "a" 2, "b" 3, "a" 3, "b" */ ``` You can use any dimension and number of alternatives. In the current example we used 2 dimensions. By the first dimension we used 3 alternatives: `[1, 2, 3]` and by the second dimension we used 2 alternatives: `["a", "b"]`. ## License MIT - 2016 Jánszky László Lajos # bl *(BufferList)* [](https://travis-ci.com/rvagg/bl/) **A Node.js Buffer list collector, reader and streamer thingy.** [](https://nodei.co/npm/bl/) **bl** is a storage object for collections of Node Buffers, exposing them with the main Buffer readable API. Also works as a duplex stream so you can collect buffers from a stream that emits them and emit buffers to a stream that consumes them! The original buffers are kept intact and copies are only done as necessary. Any reads that require the use of a single original buffer will return a slice of that buffer only (which references the same memory as the original buffer). Reads that span buffers perform concatenation as required and return the results transparently. ```js const { BufferList } = require('bl') const bl = new BufferList() bl.append(Buffer.from('abcd')) bl.append(Buffer.from('efg')) bl.append('hi') // bl will also accept & convert Strings bl.append(Buffer.from('j')) bl.append(Buffer.from([ 0x3, 0x4 ])) console.log(bl.length) // 12 console.log(bl.slice(0, 10).toString('ascii')) // 'abcdefghij' console.log(bl.slice(3, 10).toString('ascii')) // 'defghij' console.log(bl.slice(3, 6).toString('ascii')) // 'def' console.log(bl.slice(3, 8).toString('ascii')) // 'defgh' console.log(bl.slice(5, 10).toString('ascii')) // 'fghij' console.log(bl.indexOf('def')) // 3 console.log(bl.indexOf('asdf')) // -1 // or just use toString! console.log(bl.toString()) // 'abcdefghij\u0003\u0004' console.log(bl.toString('ascii', 3, 8)) // 'defgh' console.log(bl.toString('ascii', 5, 10)) // 'fghij' // other standard Buffer readables console.log(bl.readUInt16BE(10)) // 0x0304 console.log(bl.readUInt16LE(10)) // 0x0403 ``` Give it a callback in the constructor and use it just like **[concat-stream](https://github.com/maxogden/node-concat-stream)**: ```js const { BufferListStream } = require('bl') const fs = require('fs') fs.createReadStream('README.md') .pipe(BufferListStream((err, data) => { // note 'new' isn't strictly required // `data` is a complete Buffer object containing the full data console.log(data.toString()) })) ``` Note that when you use the *callback* method like this, the resulting `data` parameter is a concatenation of all `Buffer` objects in the list. If you want to avoid the overhead of this concatenation (in cases of extreme performance consciousness), then avoid the *callback* method and just listen to `'end'` instead, like a standard Stream. Or to fetch a URL using [hyperquest](https://github.com/substack/hyperquest) (should work with [request](http://github.com/mikeal/request) and even plain Node http too!): ```js const hyperquest = require('hyperquest') const { BufferListStream } = require('bl') const url = 'https://raw.github.com/rvagg/bl/master/README.md' hyperquest(url).pipe(BufferListStream((err, data) => { console.log(data.toString()) })) ``` Or, use it as a readable stream to recompose a list of Buffers to an output source: ```js const { BufferListStream } = require('bl') const fs = require('fs') var bl = new BufferListStream() bl.append(Buffer.from('abcd')) bl.append(Buffer.from('efg')) bl.append(Buffer.from('hi')) bl.append(Buffer.from('j')) bl.pipe(fs.createWriteStream('gibberish.txt')) ``` ## API * <a href="#ctor"><code><b>new BufferList([ buf ])</b></code></a> * <a href="#isBufferList"><code><b>BufferList.isBufferList(obj)</b></code></a> * <a href="#length"><code>bl.<b>length</b></code></a> * <a href="#append"><code>bl.<b>append(buffer)</b></code></a> * <a href="#get"><code>bl.<b>get(index)</b></code></a> * <a href="#indexOf"><code>bl.<b>indexOf(value[, byteOffset][, encoding])</b></code></a> * <a href="#slice"><code>bl.<b>slice([ start[, end ] ])</b></code></a> * <a href="#shallowSlice"><code>bl.<b>shallowSlice([ start[, end ] ])</b></code></a> * <a href="#copy"><code>bl.<b>copy(dest, [ destStart, [ srcStart [, srcEnd ] ] ])</b></code></a> * <a href="#duplicate"><code>bl.<b>duplicate()</b></code></a> * <a href="#consume"><code>bl.<b>consume(bytes)</b></code></a> * <a href="#toString"><code>bl.<b>toString([encoding, [ start, [ end ]]])</b></code></a> * <a href="#readXX"><code>bl.<b>readDoubleBE()</b></code>, <code>bl.<b>readDoubleLE()</b></code>, <code>bl.<b>readFloatBE()</b></code>, <code>bl.<b>readFloatLE()</b></code>, <code>bl.<b>readInt32BE()</b></code>, <code>bl.<b>readInt32LE()</b></code>, <code>bl.<b>readUInt32BE()</b></code>, <code>bl.<b>readUInt32LE()</b></code>, <code>bl.<b>readInt16BE()</b></code>, <code>bl.<b>readInt16LE()</b></code>, <code>bl.<b>readUInt16BE()</b></code>, <code>bl.<b>readUInt16LE()</b></code>, <code>bl.<b>readInt8()</b></code>, <code>bl.<b>readUInt8()</b></code></a> * <a href="#ctorStream"><code><b>new BufferListStream([ callback ])</b></code></a> -------------------------------------------------------- <a name="ctor"></a> ### new BufferList([ Buffer | Buffer array | BufferList | BufferList array | String ]) No arguments are _required_ for the constructor, but you can initialise the list by passing in a single `Buffer` object or an array of `Buffer` objects. `new` is not strictly required, if you don't instantiate a new object, it will be done automatically for you so you can create a new instance simply with: ```js const { BufferList } = require('bl') const bl = BufferList() // equivalent to: const { BufferList } = require('bl') const bl = new BufferList() ``` -------------------------------------------------------- <a name="isBufferList"></a> ### BufferList.isBufferList(obj) Determines if the passed object is a `BufferList`. It will return `true` if the passed object is an instance of `BufferList` **or** `BufferListStream` and `false` otherwise. N.B. this won't return `true` for `BufferList` or `BufferListStream` instances created by versions of this library before this static method was added. -------------------------------------------------------- <a name="length"></a> ### bl.length Get the length of the list in bytes. This is the sum of the lengths of all of the buffers contained in the list, minus any initial offset for a semi-consumed buffer at the beginning. Should accurately represent the total number of bytes that can be read from the list. -------------------------------------------------------- <a name="append"></a> ### bl.append(Buffer | Buffer array | BufferList | BufferList array | String) `append(buffer)` adds an additional buffer or BufferList to the internal list. `this` is returned so it can be chained. -------------------------------------------------------- <a name="get"></a> ### bl.get(index) `get()` will return the byte at the specified index. -------------------------------------------------------- <a name="indexOf"></a> ### bl.indexOf(value[, byteOffset][, encoding]) `get()` will return the byte at the specified index. `indexOf()` method returns the first index at which a given element can be found in the BufferList, or -1 if it is not present. -------------------------------------------------------- <a name="slice"></a> ### bl.slice([ start, [ end ] ]) `slice()` returns a new `Buffer` object containing the bytes within the range specified. Both `start` and `end` are optional and will default to the beginning and end of the list respectively. If the requested range spans a single internal buffer then a slice of that buffer will be returned which shares the original memory range of that Buffer. If the range spans multiple buffers then copy operations will likely occur to give you a uniform Buffer. -------------------------------------------------------- <a name="shallowSlice"></a> ### bl.shallowSlice([ start, [ end ] ]) `shallowSlice()` returns a new `BufferList` object containing the bytes within the range specified. Both `start` and `end` are optional and will default to the beginning and end of the list respectively. No copies will be performed. All buffers in the result share memory with the original list. -------------------------------------------------------- <a name="copy"></a> ### bl.copy(dest, [ destStart, [ srcStart [, srcEnd ] ] ]) `copy()` copies the content of the list in the `dest` buffer, starting from `destStart` and containing the bytes within the range specified with `srcStart` to `srcEnd`. `destStart`, `start` and `end` are optional and will default to the beginning of the `dest` buffer, and the beginning and end of the list respectively. -------------------------------------------------------- <a name="duplicate"></a> ### bl.duplicate() `duplicate()` performs a **shallow-copy** of the list. The internal Buffers remains the same, so if you change the underlying Buffers, the change will be reflected in both the original and the duplicate. This method is needed if you want to call `consume()` or `pipe()` and still keep the original list.Example: ```js var bl = new BufferListStream() bl.append('hello') bl.append(' world') bl.append('\n') bl.duplicate().pipe(process.stdout, { end: false }) console.log(bl.toString()) ``` -------------------------------------------------------- <a name="consume"></a> ### bl.consume(bytes) `consume()` will shift bytes *off the start of the list*. The number of bytes consumed don't need to line up with the sizes of the internal Buffers&mdash;initial offsets will be calculated accordingly in order to give you a consistent view of the data. -------------------------------------------------------- <a name="toString"></a> ### bl.toString([encoding, [ start, [ end ]]]) `toString()` will return a string representation of the buffer. The optional `start` and `end` arguments are passed on to `slice()`, while the `encoding` is passed on to `toString()` of the resulting Buffer. See the [Buffer#toString()](http://nodejs.org/docs/latest/api/buffer.html#buffer_buf_tostring_encoding_start_end) documentation for more information. -------------------------------------------------------- <a name="readXX"></a> ### bl.readDoubleBE(), bl.readDoubleLE(), bl.readFloatBE(), bl.readFloatLE(), bl.readInt32BE(), bl.readInt32LE(), bl.readUInt32BE(), bl.readUInt32LE(), bl.readInt16BE(), bl.readInt16LE(), bl.readUInt16BE(), bl.readUInt16LE(), bl.readInt8(), bl.readUInt8() All of the standard byte-reading methods of the `Buffer` interface are implemented and will operate across internal Buffer boundaries transparently. See the <b><code>[Buffer](http://nodejs.org/docs/latest/api/buffer.html)</code></b> documentation for how these work. -------------------------------------------------------- <a name="ctorStream"></a> ### new BufferListStream([ callback | Buffer | Buffer array | BufferList | BufferList array | String ]) **BufferListStream** is a Node **[Duplex Stream](http://nodejs.org/docs/latest/api/stream.html#stream_class_stream_duplex)**, so it can be read from and written to like a standard Node stream. You can also `pipe()` to and from a **BufferListStream** instance. The constructor takes an optional callback, if supplied, the callback will be called with an error argument followed by a reference to the **bl** instance, when `bl.end()` is called (i.e. from a piped stream). This is a convenient method of collecting the entire contents of a stream, particularly when the stream is *chunky*, such as a network stream. Normally, no arguments are required for the constructor, but you can initialise the list by passing in a single `Buffer` object or an array of `Buffer` object. `new` is not strictly required, if you don't instantiate a new object, it will be done automatically for you so you can create a new instance simply with: ```js const { BufferListStream } = require('bl') const bl = BufferListStream() // equivalent to: const { BufferListStream } = require('bl') const bl = new BufferListStream() ``` N.B. For backwards compatibility reasons, `BufferListStream` is the **default** export when you `require('bl')`: ```js const { BufferListStream } = require('bl') // equivalent to: const BufferListStream = require('bl') ``` -------------------------------------------------------- ## Contributors **bl** is brought to you by the following hackers: * [Rod Vagg](https://github.com/rvagg) * [Matteo Collina](https://github.com/mcollina) * [Jarett Cruger](https://github.com/jcrugzz) <a name="license"></a> ## License &amp; copyright Copyright (c) 2013-2019 bl contributors (listed above). bl is licensed under the MIT license. All rights not explicitly granted in the MIT license are reserved. See the included LICENSE.md file for more details. # tar-fs filesystem bindings for [tar-stream](https://github.com/mafintosh/tar-stream). ``` npm install tar-fs ``` [](http://travis-ci.org/mafintosh/tar-fs) ## Usage tar-fs allows you to pack directories into tarballs and extract tarballs into directories. It doesn't gunzip for you, so if you want to extract a `.tar.gz` with this you'll need to use something like [gunzip-maybe](https://github.com/mafintosh/gunzip-maybe) in addition to this. ``` js var tar = require('tar-fs') var fs = require('fs') // packing a directory tar.pack('./my-directory').pipe(fs.createWriteStream('my-tarball.tar')) // extracting a directory fs.createReadStream('my-other-tarball.tar').pipe(tar.extract('./my-other-directory')) ``` To ignore various files when packing or extracting add a ignore function to the options. `ignore` is also an alias for `filter`. Additionally you get `header` if you use ignore while extracting. That way you could also filter by metadata. ``` js var pack = tar.pack('./my-directory', { ignore: function(name) { return path.extname(name) === '.bin' // ignore .bin files when packing } }) var extract = tar.extract('./my-other-directory', { ignore: function(name) { return path.extname(name) === '.bin' // ignore .bin files inside the tarball when extracing } }) var extractFilesDirs = tar.extract('./my-other-other-directory', { ignore: function(_, header) { // pass files & directories, ignore e.g. symlinks return header.type !== 'file' && header.type !== 'directory' } }) ``` You can also specify which entries to pack using the `entries` option ```js var pack = tar.pack('./my-directory', { entries: ['file1', 'subdir/file2'] // only the specific entries will be packed }) ``` If you want to modify the headers when packing/extracting add a map function to the options ``` js var pack = tar.pack('./my-directory', { map: function(header) { header.name = 'prefixed/'+header.name return header } }) var extract = tar.extract('./my-directory', { map: function(header) { header.name = 'another-prefix/'+header.name return header } }) ``` Similarly you can use `mapStream` incase you wanna modify the input/output file streams ``` js var pack = tar.pack('./my-directory', { mapStream: function(fileStream, header) { // NOTE: the returned stream HAS to have the same length as the input stream. // If not make sure to update the size in the header passed in here. if (path.extname(header.name) === '.js') { return fileStream.pipe(someTransform) } return fileStream; } }) var extract = tar.extract('./my-directory', { mapStream: function(fileStream, header) { if (path.extname(header.name) === '.js') { return fileStream.pipe(someTransform) } return fileStream; } }) ``` Set `options.fmode` and `options.dmode` to ensure that files/directories extracted have the corresponding modes ``` js var extract = tar.extract('./my-directory', { dmode: parseInt(555, 8), // all dirs should be readable fmode: parseInt(444, 8) // all files should be readable }) ``` It can be useful to use `dmode` and `fmode` if you are packing/unpacking tarballs between *nix/windows to ensure that all files/directories unpacked are readable. Alternatively you can set `options.readable` and/or `options.writable` to set the dmode and fmode to readable/writable. ``` js var extract = tar.extract('./my-directory', { readable: true, // all dirs and files should be readable writable: true, // all dirs and files should be writable }) ``` Set `options.strict` to `false` if you want to ignore errors due to unsupported entry types (like device files) To dereference symlinks (pack the contents of the symlink instead of the link itself) set `options.dereference` to `true`. ## Copy a directory Copying a directory with permissions and mtime intact is as simple as ``` js tar.pack('source-directory').pipe(tar.extract('dest-directory')) ``` ## Interaction with [`tar-stream`](https://github.com/mafintosh/tar-stream) Use `finalize: false` and the `finish` hook to leave the pack stream open for further entries (see [`tar-stream#pack`](https://github.com/mafintosh/tar-stream#packing)), and use `pack` to pass an existing pack stream. ``` js var mypack = tar.pack('./my-directory', { finalize: false, finish: function(sameAsMypack) { mypack.entry({name: 'generated-file.txt'}, "hello") tar.pack('./other-directory', { pack: sameAsMypack }) } }) ``` ## Performance Packing and extracting a 6.1 GB with 2496 directories and 2398 files yields the following results on my Macbook Air. [See the benchmark here](https://gist.github.com/mafintosh/8102201) * tar-fs: 34.261 seconds * [node-tar](https://github.com/isaacs/node-tar): 366.123 seconds (or 10x slower) ## License MIT # assemblyscript-regex A regex engine for AssemblyScript. [AssemblyScript](https://www.assemblyscript.org/) is a new language, based on TypeScript, that runs on WebAssembly. AssemblyScript has a lightweight standard library, but lacks support for Regular Expression. The project fills that gap! This project exposes an API that mirrors the JavaScript [RegExp](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp) class: ```javascript const regex = new RegExp("fo*", "g"); const str = "table football, foul"; let match: Match | null = regex.exec(str); while (match != null) { // first iteration // match.index = 6 // match.matches[0] = "foo" // second iteration // match.index = 16 // match.matches[0] = "fo" match = regex.exec(str); } ``` ## Project status The initial focus of this implementation has been feature support and functionality over performance. It currently supports a sufficient number of regex features to be considered useful, including most character classes, common assertions, groups, alternations, capturing groups and quantifiers. The next phase of development will focussed on more extensive testing and performance. The project currently has reasonable unit test coverage, focussed on positive and negative test cases on a per-feature basis. It also includes a more exhaustive test suite with test cases borrowed from another regex library. ### Feature support Based on the classfication within the [MDN cheatsheet](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions/Cheatsheet) **Character sets** - [x] . - [x] \d - [x] \D - [x] \w - [x] \W - [x] \s - [x] \S - [x] \t - [x] \r - [x] \n - [x] \v - [x] \f - [ ] [\b] - [ ] \0 - [ ] \cX - [x] \xhh - [x] \uhhhh - [ ] \u{hhhh} or \u{hhhhh} - [x] \ **Assertions** - [x] ^ - [x] $ - [ ] \b - [ ] \B **Other assertions** - [ ] x(?=y) Lookahead assertion - [ ] x(?!y) Negative lookahead assertion - [ ] (?<=y)x Lookbehind assertion - [ ] (?<!y)x Negative lookbehind assertion **Groups and ranges** - [x] x|y - [x] [xyz][a-c] - [x] [^xyz][^a-c] - [x] (x) capturing group - [ ] \n back reference - [ ] (?<Name>x) named capturing group - [x] (?:x) Non-capturing group **Quantifiers** - [x] x\* - [x] x+ - [x] x? - [x] x{n} - [x] x{n,} - [x] x{n,m} - [ ] x\*? / x+? / ... **RegExp** - [x] global - [ ] sticky - [x] case insensitive - [x] multiline - [x] dotAll - [ ] unicode ### Development This project is open source, MIT licenced and your contributions are very much welcomed. To get started, check out the repository and install dependencies: ``` $ npm install ``` A few general points about the tools and processes this project uses: - This project uses prettier for code formatting and eslint to provide additional syntactic checks. These are both run on `npm test` and as part of the CI build. - The unit tests are executed using [as-pect](https://github.com/jtenner/as-pect) - a native AssemblyScript test runner - The specification tests are within the `spec` folder. The `npm run test:generate` target transforms these tests into as-pect tests which execute as part of the standard build / test cycle - In order to support improved debugging you can execute this library as TypeScript (rather than WebAssembly), via the `npm run tsrun` target. # axios // core The modules found in `core/` should be modules that are specific to the domain logic of axios. These modules would most likely not make sense to be consumed outside of the axios module, as their logic is too specific. Some examples of core modules are: - Dispatching requests - Managing interceptors - Handling config # is-extglob [](https://www.npmjs.com/package/is-extglob) [](https://npmjs.org/package/is-extglob) [](https://travis-ci.org/jonschlinkert/is-extglob) > Returns true if a string has an extglob. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save is-extglob ``` ## Usage ```js var isExtglob = require('is-extglob'); ``` **True** ```js isExtglob('?(abc)'); isExtglob('@(abc)'); isExtglob('!(abc)'); isExtglob('*(abc)'); isExtglob('+(abc)'); ``` **False** Escaped extglobs: ```js isExtglob('\\?(abc)'); isExtglob('\\@(abc)'); isExtglob('\\!(abc)'); isExtglob('\\*(abc)'); isExtglob('\\+(abc)'); ``` Everything else... ```js isExtglob('foo.js'); isExtglob('!foo.js'); isExtglob('*.js'); isExtglob('**/abc.js'); isExtglob('abc/*.js'); isExtglob('abc/(aaa|bbb).js'); isExtglob('abc/[a-z].js'); isExtglob('abc/{a,b}.js'); isExtglob('abc/?.js'); isExtglob('abc.js'); isExtglob('abc/def/ghi.js'); ``` ## History **v2.0** Adds support for escaping. Escaped exglobs no longer return true. ## About ### Related projects * [has-glob](https://www.npmjs.com/package/has-glob): Returns `true` if an array has a glob pattern. | [homepage](https://github.com/jonschlinkert/has-glob "Returns `true` if an array has a glob pattern.") * [is-glob](https://www.npmjs.com/package/is-glob): Returns `true` if the given string looks like a glob pattern or an extglob pattern… [more](https://github.com/jonschlinkert/is-glob) | [homepage](https://github.com/jonschlinkert/is-glob "Returns `true` if the given string looks like a glob pattern or an extglob pattern. This makes it easy to create code that only uses external modules like node-glob when necessary, resulting in much faster code execution and initialization time, and a bet") * [micromatch](https://www.npmjs.com/package/micromatch): Glob matching for javascript/node.js. A drop-in replacement and faster alternative to minimatch and multimatch. | [homepage](https://github.com/jonschlinkert/micromatch "Glob matching for javascript/node.js. A drop-in replacement and faster alternative to minimatch and multimatch.") ### Contributing Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). ### Building docs _(This document was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme) (a [verb](https://github.com/verbose/verb) generator), please don't edit the readme directly. Any changes to the readme must be made in [.verb.md](.verb.md).)_ To generate the readme and API documentation with [verb](https://github.com/verbose/verb): ```sh $ npm install -g verb verb-generate-readme && verb ``` ### Running tests Install dev dependencies: ```sh $ npm install -d && npm test ``` ### Author **Jon Schlinkert** * [github/jonschlinkert](https://github.com/jonschlinkert) * [twitter/jonschlinkert](http://twitter.com/jonschlinkert) ### License Copyright © 2016, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT license](https://github.com/jonschlinkert/is-extglob/blob/master/LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.1.31, on October 12, 2016._ # <img src="docs_app/assets/Rx_Logo_S.png" alt="RxJS Logo" width="86" height="86"> RxJS: Reactive Extensions For JavaScript [](https://circleci.com/gh/ReactiveX/rxjs/tree/6.x) [](http://badge.fury.io/js/%40reactivex%2Frxjs) [](https://gitter.im/Reactive-Extensions/RxJS?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) # RxJS 6 Stable ### MIGRATION AND RELEASE INFORMATION: Find out how to update to v6, **automatically update your TypeScript code**, and more! - [Current home is MIGRATION.md](./docs_app/content/guide/v6/migration.md) ### FOR V 5.X PLEASE GO TO [THE 5.0 BRANCH](https://github.com/ReactiveX/rxjs/tree/5.x) Reactive Extensions Library for JavaScript. This is a rewrite of [Reactive-Extensions/RxJS](https://github.com/Reactive-Extensions/RxJS) and is the latest production-ready version of RxJS. This rewrite is meant to have better performance, better modularity, better debuggable call stacks, while staying mostly backwards compatible, with some breaking changes that reduce the API surface. [Apache 2.0 License](LICENSE.txt) - [Code of Conduct](CODE_OF_CONDUCT.md) - [Contribution Guidelines](CONTRIBUTING.md) - [Maintainer Guidelines](doc_app/content/maintainer-guidelines.md) - [API Documentation](https://rxjs.dev/) ## Versions In This Repository - [master](https://github.com/ReactiveX/rxjs/commits/master) - This is all of the current, unreleased work, which is against v6 of RxJS right now - [stable](https://github.com/ReactiveX/rxjs/commits/stable) - This is the branch for the latest version you'd get if you do `npm install rxjs` ## Important By contributing or commenting on issues in this repository, whether you've read them or not, you're agreeing to the [Contributor Code of Conduct](CODE_OF_CONDUCT.md). Much like traffic laws, ignorance doesn't grant you immunity. ## Installation and Usage ### ES6 via npm ```sh npm install rxjs ``` It's recommended to pull in the Observable creation methods you need directly from `'rxjs'` as shown below with `range`. And you can pull in any operator you need from one spot, under `'rxjs/operators'`. ```ts import { range } from "rxjs"; import { map, filter } from "rxjs/operators"; range(1, 200) .pipe( filter(x => x % 2 === 1), map(x => x + x) ) .subscribe(x => console.log(x)); ``` Here, we're using the built-in `pipe` method on Observables to combine operators. See [pipeable operators](https://github.com/ReactiveX/rxjs/blob/master/doc/pipeable-operators.md) for more information. ### CommonJS via npm To install this library for CommonJS (CJS) usage, use the following command: ```sh npm install rxjs ``` (Note: destructuring available in Node 8+) ```js const { range } = require('rxjs'); const { map, filter } = require('rxjs/operators'); range(1, 200).pipe( filter(x => x % 2 === 1), map(x => x + x) ).subscribe(x => console.log(x)); ``` ### CDN For CDN, you can use [unpkg](https://unpkg.com/): https://unpkg.com/rxjs/bundles/rxjs.umd.min.js The global namespace for rxjs is `rxjs`: ```js const { range } = rxjs; const { map, filter } = rxjs.operators; range(1, 200) .pipe( filter(x => x % 2 === 1), map(x => x + x) ) .subscribe(x => console.log(x)); ``` ## Goals - Smaller overall bundles sizes - Provide better performance than preceding versions of RxJS - To model/follow the [Observable Spec Proposal](https://github.com/zenparsing/es-observable) to the observable - Provide more modular file structure in a variety of formats - Provide more debuggable call stacks than preceding versions of RxJS ## Building/Testing - `npm run build_all` - builds everything - `npm test` - runs tests - `npm run test_no_cache` - run test with `ts-node` set to false ## Performance Tests Run `npm run build_perf` or `npm run perf` to run the performance tests with `protractor`. Run `npm run perf_micro [operator]` to run micro performance test benchmarking operator. ## Adding documentation We appreciate all contributions to the documentation of any type. All of the information needed to get the docs app up and running locally as well as how to contribute can be found in the [documentation directory](./docs_app). ## Generating PNG marble diagrams The script `npm run tests2png` requires some native packages installed locally: `imagemagick`, `graphicsmagick`, and `ghostscript`. For Mac OS X with [Homebrew](http://brew.sh/): - `brew install imagemagick` - `brew install graphicsmagick` - `brew install ghostscript` - You may need to install the Ghostscript fonts manually: - Download the tarball from the [gs-fonts project](https://sourceforge.net/projects/gs-fonts) - `mkdir -p /usr/local/share/ghostscript && tar zxvf /path/to/ghostscript-fonts.tar.gz -C /usr/local/share/ghostscript` For Debian Linux: - `sudo add-apt-repository ppa:dhor/myway` - `apt-get install imagemagick` - `apt-get install graphicsmagick` - `apt-get install ghostscript` For Windows and other Operating Systems, check the download instructions here: - http://imagemagick.org - http://www.graphicsmagick.org - http://www.ghostscript.com/ text-encoding-utf-8 ============== This is a **partial** polyfill for the [Encoding Living Standard](https://encoding.spec.whatwg.org/) API for the Web, allowing encoding and decoding of textual data to and from Typed Array buffers for binary data in JavaScript. This is fork of [text-encoding](https://github.com/inexorabletash/text-encoding) that **only** support **UTF-8**. Basic examples and tests are included. ### Install ### There are a few ways you can get the `text-encoding-utf-8` library. #### Node #### `text-encoding-utf-8` is on `npm`. Simply run: ```js npm install text-encoding-utf-8 ``` Or add it to your `package.json` dependencies. ### HTML Page Usage ### ```html <script src="encoding.js"></script> ``` ### API Overview ### Basic Usage ```js var uint8array = TextEncoder(encoding).encode(string); var string = TextDecoder(encoding).decode(uint8array); ``` Streaming Decode ```js var string = "", decoder = TextDecoder(encoding), buffer; while (buffer = next_chunk()) { string += decoder.decode(buffer, {stream:true}); } string += decoder.decode(); // finish the stream ``` ### Encodings ### Only `utf-8` and `UTF-8` are supported. ### Non-Standard Behavior ### Only `utf-8` and `UTF-8` are supported. ### Motivation Binary size matters, especially on a mobile phone. Safari on iOS does not support TextDecoder or TextEncoder. # AssemblyScript Loader A convenient loader for [AssemblyScript](https://assemblyscript.org) modules. Demangles module exports to a friendly object structure compatible with TypeScript definitions and provides useful utility to read/write data from/to memory. [Documentation](https://assemblyscript.org/loader.html) # rc The non-configurable configuration loader for lazy people. ## Usage The only option is to pass rc the name of your app, and your default configuration. ```javascript var conf = require('rc')(appname, { //defaults go here. port: 2468, //defaults which are objects will be merged, not replaced views: { engine: 'jade' } }); ``` `rc` will return your configuration options merged with the defaults you specify. If you pass in a predefined defaults object, it will be mutated: ```javascript var conf = {}; require('rc')(appname, conf); ``` If `rc` finds any config files for your app, the returned config object will have a `configs` array containing their paths: ```javascript var appCfg = require('rc')(appname, conf); appCfg.configs[0] // /etc/appnamerc appCfg.configs[1] // /home/dominictarr/.config/appname appCfg.config // same as appCfg.configs[appCfg.configs.length - 1] ``` ## Standards Given your application name (`appname`), rc will look in all the obvious places for configuration. * command line arguments, parsed by minimist _(e.g. `--foo baz`, also nested: `--foo.bar=baz`)_ * environment variables prefixed with `${appname}_` * or use "\_\_" to indicate nested properties <br/> _(e.g. `appname_foo__bar__baz` => `foo.bar.baz`)_ * if you passed an option `--config file` then from that file * a local `.${appname}rc` or the first found looking in `./ ../ ../../ ../../../` etc. * `$HOME/.${appname}rc` * `$HOME/.${appname}/config` * `$HOME/.config/${appname}` * `$HOME/.config/${appname}/config` * `/etc/${appname}rc` * `/etc/${appname}/config` * the defaults object you passed in. All configuration sources that were found will be flattened into one object, so that sources **earlier** in this list override later ones. ## Configuration File Formats Configuration files (e.g. `.appnamerc`) may be in either [json](http://json.org/example) or [ini](http://en.wikipedia.org/wiki/INI_file) format. **No** file extension (`.json` or `.ini`) should be used. The example configurations below are equivalent: #### Formatted as `ini` ``` ; You can include comments in `ini` format if you want. dependsOn=0.10.0 ; `rc` has built-in support for ini sections, see? [commands] www = ./commands/www console = ./commands/repl ; You can even do nested sections [generators.options] engine = ejs [generators.modules] new = generate-new engine = generate-backend ``` #### Formatted as `json` ```javascript { // You can even comment your JSON, if you want "dependsOn": "0.10.0", "commands": { "www": "./commands/www", "console": "./commands/repl" }, "generators": { "options": { "engine": "ejs" }, "modules": { "new": "generate-new", "backend": "generate-backend" } } } ``` Comments are stripped from JSON config via [strip-json-comments](https://github.com/sindresorhus/strip-json-comments). > Since ini, and env variables do not have a standard for types, your application needs be prepared for strings. To ensure that string representations of booleans and numbers are always converted into their proper types (especially useful if you intend to do strict `===` comparisons), consider using a module such as [parse-strings-in-object](https://github.com/anselanza/parse-strings-in-object) to wrap the config object returned from rc. ## Simple example demonstrating precedence Assume you have an application like this (notice the hard-coded defaults passed to rc): ``` const conf = require('rc')('myapp', { port: 12345, mode: 'test' }); console.log(JSON.stringify(conf, null, 2)); ``` You also have a file `config.json`, with these contents: ``` { "port": 9000, "foo": "from config json", "something": "else" } ``` And a file `.myapprc` in the same folder, with these contents: ``` { "port": "3001", "foo": "bar" } ``` Here is the expected output from various commands: `node .` ``` { "port": "3001", "mode": "test", "foo": "bar", "_": [], "configs": [ "/Users/stephen/repos/conftest/.myapprc" ], "config": "/Users/stephen/repos/conftest/.myapprc" } ``` *Default `mode` from hard-coded object is retained, but port is overridden by `.myapprc` file (automatically found based on appname match), and `foo` is added.* `node . --foo baz` ``` { "port": "3001", "mode": "test", "foo": "baz", "_": [], "configs": [ "/Users/stephen/repos/conftest/.myapprc" ], "config": "/Users/stephen/repos/conftest/.myapprc" } ``` *Same result as above but `foo` is overridden because command-line arguments take precedence over `.myapprc` file.* `node . --foo barbar --config config.json` ``` { "port": 9000, "mode": "test", "foo": "barbar", "something": "else", "_": [], "config": "config.json", "configs": [ "/Users/stephen/repos/conftest/.myapprc", "config.json" ] } ``` *Now the `port` comes from the `config.json` file specified (overriding the value from `.myapprc`), and `foo` value is overriden by command-line despite also being specified in the `config.json` file.* ## Advanced Usage #### Pass in your own `argv` You may pass in your own `argv` as the third argument to `rc`. This is in case you want to [use your own command-line opts parser](https://github.com/dominictarr/rc/pull/12). ```javascript require('rc')(appname, defaults, customArgvParser); ``` ## Pass in your own parser If you have a special need to use a non-standard parser, you can do so by passing in the parser as the 4th argument. (leave the 3rd as null to get the default args parser) ```javascript require('rc')(appname, defaults, null, parser); ``` This may also be used to force a more strict format, such as strict, valid JSON only. ## Note on Performance `rc` is running `fs.statSync`-- so make sure you don't use it in a hot code path (e.g. a request handler) ## License Multi-licensed under the two-clause BSD License, MIT License, or Apache License, version 2.0 # eslint-visitor-keys [](https://www.npmjs.com/package/eslint-visitor-keys) [](http://www.npmtrends.com/eslint-visitor-keys) [](https://travis-ci.org/eslint/eslint-visitor-keys) [](https://david-dm.org/eslint/eslint-visitor-keys) Constants and utilities about visitor keys to traverse AST. ## 💿 Installation Use [npm] to install. ```bash $ npm install eslint-visitor-keys ``` ### Requirements - [Node.js] 4.0.0 or later. ## 📖 Usage ```js const evk = require("eslint-visitor-keys") ``` ### evk.KEYS > type: `{ [type: string]: string[] | undefined }` Visitor keys. This keys are frozen. This is an object. Keys are the type of [ESTree] nodes. Their values are an array of property names which have child nodes. For example: ``` console.log(evk.KEYS.AssignmentExpression) // → ["left", "right"] ``` ### evk.getKeys(node) > type: `(node: object) => string[]` Get the visitor keys of a given AST node. This is similar to `Object.keys(node)` of ES Standard, but some keys are excluded: `parent`, `leadingComments`, `trailingComments`, and names which start with `_`. This will be used to traverse unknown nodes. For example: ``` const node = { type: "AssignmentExpression", left: { type: "Identifier", name: "foo" }, right: { type: "Literal", value: 0 } } console.log(evk.getKeys(node)) // → ["type", "left", "right"] ``` ### evk.unionWith(additionalKeys) > type: `(additionalKeys: object) => { [type: string]: string[] | undefined }` Make the union set with `evk.KEYS` and the given keys. - The order of keys is, `additionalKeys` is at first, then `evk.KEYS` is concatenated after that. - It removes duplicated keys as keeping the first one. For example: ``` console.log(evk.unionWith({ MethodDefinition: ["decorators"] })) // → { ..., MethodDefinition: ["decorators", "key", "value"], ... } ``` ## 📰 Change log See [GitHub releases](https://github.com/eslint/eslint-visitor-keys/releases). ## 🍻 Contributing Welcome. See [ESLint contribution guidelines](https://eslint.org/docs/developer-guide/contributing/). ### Development commands - `npm test` runs tests and measures code coverage. - `npm run lint` checks source codes with ESLint. - `npm run coverage` opens the code coverage report of the previous test with your default browser. - `npm run release` publishes this package to [npm] registory. [npm]: https://www.npmjs.com/ [Node.js]: https://nodejs.org/en/ [ESTree]: https://github.com/estree/estree # AssemblyScript Rtrace A tiny utility to sanitize the AssemblyScript runtime. Records allocations and frees performed by the runtime and emits an error if something is off. Also checks for leaks. Instructions ------------ Compile your module that uses the full or half runtime with `-use ASC_RTRACE=1 --explicitStart` and include an instance of this module as the import named `rtrace`. ```js const rtrace = new Rtrace({ onerror(err, info) { // handle error }, oninfo(msg) { // print message, optional }, getMemory() { // obtain the module's memory, // e.g. with --explicitStart: return instance.exports.memory; } }); const { module, instance } = await WebAssembly.instantiate(..., rtrace.install({ ...imports... }) ); instance.exports._start(); ... if (rtrace.active) { let leakCount = rtr.check(); if (leakCount) { // handle error } } ``` Note that references in globals which are not cleared before collection is performed appear as leaks, including their inner members. A TypedArray would leak itself and its backing ArrayBuffer in this case for example. This is perfectly normal and clearing all globals avoids this. # fs-constants Small module that allows you to get the fs constants across Node and the browser. ``` npm install fs-constants ``` Previously you would use `require('constants')` for this in node but that has been deprecated and changed to `require('fs').constants` which does not browserify. This module uses `require('constants')` in the browser and `require('fs').constants` in node to work around this ## Usage ``` js var constants = require('fs-constants') console.log('constants:', constants) ``` ## License MIT Standard library ================ Standard library components for use with `tsc` (portable) and `asc` (assembly). Base configurations (.json) and definition files (.d.ts) are relevant to `tsc` only and not used by `asc`. # registry-auth-token [](http://browsenpm.org/package/registry-auth-token)[](https://travis-ci.org/rexxars/registry-auth-token) Get the auth token set for an npm registry from `.npmrc`. Also allows fetching the configured registry URL for a given npm scope. ## Installing ``` npm install --save registry-auth-token ``` ## Usage Returns an object containing `token` and `type`, or `undefined` if no token can be found. `type` can be either `Bearer` or `Basic`. ```js var getAuthToken = require('registry-auth-token') var getRegistryUrl = require('registry-auth-token/registry-url') // Get auth token and type for default `registry` set in `.npmrc` console.log(getAuthToken()) // {token: 'someToken', type: 'Bearer'} // Get auth token for a specific registry URL console.log(getAuthToken('//registry.foo.bar')) // Find the registry auth token for a given URL (with deep path): // If registry is at `//some.host/registry` // URL passed is `//some.host/registry/deep/path` // Will find token the closest matching path; `//some.host/registry` console.log(getAuthToken('//some.host/registry/deep/path', {recursive: true})) // Find the configured registry url for scope `@foobar`. // Falls back to the global registry if not defined. console.log(getRegistryUrl('@foobar')) // Use the npm config that is passed in console.log(getRegistryUrl('http://registry.foobar.eu/', { npmrc: { 'registry': 'http://registry.foobar.eu/', '//registry.foobar.eu/:_authToken': 'qar' } })) ``` ## Return value ```js // If auth info can be found: {token: 'someToken', type: 'Bearer'} // Or: {token: 'someOtherToken', type: 'Basic'} // Or, if nothing is found: undefined ``` ## Security Please be careful when using this. Leaking your auth token is dangerous. ## License MIT-licensed. See LICENSE. wide-align ---------- A wide-character aware text alignment function for use in terminals / on the console. ### Usage ``` var align = require('wide-align') // Note that if you view this on a unicode console, all of the slashes are // aligned. This is because on a console, all narrow characters are // an en wide and all wide characters are an em. In browsers, this isn't // held to and wide characters like "古" can be less than two narrow // characters even with a fixed width font. console.log(align.center('abc', 10)) // ' abc ' console.log(align.center('古古古', 10)) // ' 古古古 ' console.log(align.left('abc', 10)) // 'abc ' console.log(align.left('古古古', 10)) // '古古古 ' console.log(align.right('abc', 10)) // ' abc' console.log(align.right('古古古', 10)) // ' 古古古' ``` ### Functions #### `align.center(str, length)` → `str` Returns *str* with spaces added to both sides such that that it is *length* chars long and centered in the spaces. #### `align.left(str, length)` → `str` Returns *str* with spaces to the right such that it is *length* chars long. ### `align.right(str, length)` → `str` Returns *str* with spaces to the left such that it is *length* chars long. ### Origins These functions were originally taken from [cliui](https://npmjs.com/package/cliui). Changes include switching to the MUCH faster pad generation function from [lodash](https://npmjs.com/package/lodash), making center alignment pad both sides and adding left alignment. # flatted [](https://www.npmjs.com/package/flatted) [](https://coveralls.io/github/WebReflection/flatted?branch=main) [](https://travis-ci.com/WebReflection/flatted) [](https://opensource.org/licenses/ISC)   <sup>**Social Media Photo by [Matt Seymour](https://unsplash.com/@mattseymour) on [Unsplash](https://unsplash.com/)**</sup> ## Announcement 📣 There is a standard approach to recursion and more data-types than what JSON allow, and it's part of this [Structured Clone Module](https://github.com/ungap/structured-clone/#readme). Beside acting as a polyfill, its `@ungap/structured-clone/json` export provides both `stringify` and `parse`, and it's been tested for being faster than *flatted*, but its produced output is also smaller than *flatted*. The *@ungap/structured-clone* module is, in short, a drop in replacement for *flatted*, but it's not compatible with *flatted* specialized syntax. However, if recursion, as well as more data-types, are what you are after, or interesting for your projects, consider switching to this new module whenever you can 👍 - - - A super light (0.5K) and fast circular JSON parser, directly from the creator of [CircularJSON](https://github.com/WebReflection/circular-json/#circularjson). Now available also for **[PHP](./php/flatted.php)**. ```js npm i flatted ``` Usable via [CDN](https://unpkg.com/flatted) or as regular module. ```js // ESM import {parse, stringify, toJSON, fromJSON} from 'flatted'; // CJS const {parse, stringify, toJSON, fromJSON} = require('flatted'); const a = [{}]; a[0].a = a; a.push(a); stringify(a); // [["1","0"],{"a":"0"}] ``` ## toJSON and from JSON If you'd like to implicitly survive JSON serialization, these two helpers helps: ```js import {toJSON, fromJSON} from 'flatted'; class RecursiveMap extends Map { static fromJSON(any) { return new this(fromJSON(any)); } toJSON() { return toJSON([...this.entries()]); } } const recursive = new RecursiveMap; const same = {}; same.same = same; recursive.set('same', same); const asString = JSON.stringify(recursive); const asMap = RecursiveMap.fromJSON(JSON.parse(asString)); asMap.get('same') === asMap.get('same').same; // true ``` ## Flatted VS JSON As it is for every other specialized format capable of serializing and deserializing circular data, you should never `JSON.parse(Flatted.stringify(data))`, and you should never `Flatted.parse(JSON.stringify(data))`. The only way this could work is to `Flatted.parse(Flatted.stringify(data))`, as it is also for _CircularJSON_ or any other, otherwise there's no granted data integrity. Also please note this project serializes and deserializes only data compatible with JSON, so that sockets, or anything else with internal classes different from those allowed by JSON standard, won't be serialized and unserialized as expected. ### New in V1: Exact same JSON API * Added a [reviver](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/parse#Syntax) parameter to `.parse(string, reviver)` and revive your own objects. * Added a [replacer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify#Syntax) and a `space` parameter to `.stringify(object, replacer, space)` for feature parity with JSON signature. ### Compatibility All ECMAScript engines compatible with `Map`, `Set`, `Object.keys`, and `Array.prototype.reduce` will work, even if polyfilled. ### How does it work ? While stringifying, all Objects, including Arrays, and strings, are flattened out and replaced as unique index. `*` Once parsed, all indexes will be replaced through the flattened collection. <sup><sub>`*` represented as string to avoid conflicts with numbers</sub></sup> ```js // logic example var a = [{one: 1}, {two: '2'}]; a[0].a = a; // a is the main object, will be at index '0' // {one: 1} is the second object, index '1' // {two: '2'} the third, in '2', and it has a string // which will be found at index '3' Flatted.stringify(a); // [["1","2"],{"one":1,"a":"0"},{"two":"3"},"2"] // a[one,two] {one: 1, a} {two: '2'} '2' ``` The AssemblyScript Runtime ========================== The runtime provides the functionality necessary to dynamically allocate and deallocate memory of objects, arrays and buffers, as well as collect garbage that is no longer used. The current implementation is either a Two-Color Mark & Sweep (TCMS) garbage collector that must be called manually when the execution stack is unwound or an Incremental Tri-Color Mark & Sweep (ITCMS) garbage collector that is fully automated with a shadow stack, implemented on top of a Two-Level Segregate Fit (TLSF) memory manager. It's not designed to be the fastest of its kind, but intentionally focuses on simplicity and ease of integration until we can replace it with the real deal, i.e. Wasm GC. Interface --------- ### Garbage collector / `--exportRuntime` * **__new**(size: `usize`, id: `u32` = 0): `usize`<br /> Dynamically allocates a GC object of at least the specified size and returns its address. Alignment is guaranteed to be 16 bytes to fit up to v128 values naturally. GC-allocated objects cannot be used with `__realloc` and `__free`. * **__pin**(ptr: `usize`): `usize`<br /> Pins the object pointed to by `ptr` externally so it and its directly reachable members and indirectly reachable objects do not become garbage collected. * **__unpin**(ptr: `usize`): `void`<br /> Unpins the object pointed to by `ptr` externally so it can become garbage collected. * **__collect**(): `void`<br /> Performs a full garbage collection. ### Internals * **__alloc**(size: `usize`): `usize`<br /> Dynamically allocates a chunk of memory of at least the specified size and returns its address. Alignment is guaranteed to be 16 bytes to fit up to v128 values naturally. * **__realloc**(ptr: `usize`, size: `usize`): `usize`<br /> Dynamically changes the size of a chunk of memory, possibly moving it to a new address. * **__free**(ptr: `usize`): `void`<br /> Frees a dynamically allocated chunk of memory by its address. * **__renew**(ptr: `usize`, size: `usize`): `usize`<br /> Like `__realloc`, but for `__new`ed GC objects. * **__link**(parentPtr: `usize`, childPtr: `usize`, expectMultiple: `bool`): `void`<br /> Introduces a link from a parent object to a child object, i.e. upon `parent.field = child`. * **__visit**(ptr: `usize`, cookie: `u32`): `void`<br /> Concrete visitor implementation called during traversal. Cookie can be used to indicate one of multiple operations. * **__visit_globals**(cookie: `u32`): `void`<br /> Calls `__visit` on each global that is of a managed type. * **__visit_members**(ptr: `usize`, cookie: `u32`): `void`<br /> Calls `__visit` on each member of the object pointed to by `ptr`. * **__typeinfo**(id: `u32`): `RTTIFlags`<br /> Obtains the runtime type information for objects with the specified runtime id. Runtime type information is a set of flags indicating whether a type is managed, an array or similar, and what the relevant alignments when creating an instance externally are etc. * **__instanceof**(ptr: `usize`, classId: `u32`): `bool`<br /> Tests if the object pointed to by `ptr` is an instance of the specified class id. ITCMS / `--runtime incremental` ----- The Incremental Tri-Color Mark & Sweep garbage collector maintains a separate shadow stack of managed values in the background to achieve full automation. Maintaining another stack introduces some overhead compared to the simpler Two-Color Mark & Sweep garbage collector, but makes it independent of whether the execution stack is unwound or not when it is invoked, so the garbage collector can run interleaved with the program. There are several constants one can experiment with to tweak ITCMS's automation: * `--use ASC_GC_GRANULARITY=1024`<br /> How often to interrupt. The default of 1024 means "interrupt each 1024 bytes allocated". * `--use ASC_GC_STEPFACTOR=200`<br /> How long to interrupt. The default of 200% means "run at double the speed of allocations". * `--use ASC_GC_IDLEFACTOR=200`<br /> How long to idle. The default of 200% means "wait for memory to double before kicking in again". * `--use ASC_GC_MARKCOST=1`<br /> How costly it is to mark one object. Budget per interrupt is `GRANULARITY * STEPFACTOR / 100`. * `--use ASC_GC_SWEEPCOST=10`<br /> How costly it is to sweep one object. Budget per interrupt is `GRANULARITY * STEPFACTOR / 100`. TCMS / `--runtime minimal` ---- If automation and low pause times aren't strictly necessary, using the Two-Color Mark & Sweep garbage collector instead by invoking collection manually at appropriate times when the execution stack is unwound may be more performant as it simpler and has less overhead. The execution stack is typically unwound when invoking the collector externally, at a place that is not indirectly called from Wasm. STUB / `--runtime stub` ---- The stub is a maximally minimal runtime substitute, consisting of a simple and fast bump allocator with no means of freeing up memory again, except when freeing the respective most recently allocated object on top of the bump. Useful where memory is not a concern, and/or where it is sufficient to destroy the whole module including any potential garbage after execution. See also: [Garbage collection](https://www.assemblyscript.org/garbage-collection.html) # `react-is` This package allows you to test arbitrary values and see if they're a particular React element type. ## Installation ```sh # Yarn yarn add react-is # NPM npm install react-is ``` ## Usage ### Determining if a Component is Valid ```js import React from "react"; import * as ReactIs from "react-is"; class ClassComponent extends React.Component { render() { return React.createElement("div"); } } const FunctionComponent = () => React.createElement("div"); const ForwardRefComponent = React.forwardRef((props, ref) => React.createElement(Component, { forwardedRef: ref, ...props }) ); const Context = React.createContext(false); ReactIs.isValidElementType("div"); // true ReactIs.isValidElementType(ClassComponent); // true ReactIs.isValidElementType(FunctionComponent); // true ReactIs.isValidElementType(ForwardRefComponent); // true ReactIs.isValidElementType(Context.Provider); // true ReactIs.isValidElementType(Context.Consumer); // true ReactIs.isValidElementType(React.createFactory("div")); // true ``` ### Determining an Element's Type #### Context ```js import React from "react"; import * as ReactIs from 'react-is'; const ThemeContext = React.createContext("blue"); ReactIs.isContextConsumer(<ThemeContext.Consumer />); // true ReactIs.isContextProvider(<ThemeContext.Provider />); // true ReactIs.typeOf(<ThemeContext.Provider />) === ReactIs.ContextProvider; // true ReactIs.typeOf(<ThemeContext.Consumer />) === ReactIs.ContextConsumer; // true ``` #### Element ```js import React from "react"; import * as ReactIs from 'react-is'; ReactIs.isElement(<div />); // true ReactIs.typeOf(<div />) === ReactIs.Element; // true ``` #### Fragment ```js import React from "react"; import * as ReactIs from 'react-is'; ReactIs.isFragment(<></>); // true ReactIs.typeOf(<></>) === ReactIs.Fragment; // true ``` #### Portal ```js import React from "react"; import ReactDOM from "react-dom"; import * as ReactIs from 'react-is'; const div = document.createElement("div"); const portal = ReactDOM.createPortal(<div />, div); ReactIs.isPortal(portal); // true ReactIs.typeOf(portal) === ReactIs.Portal; // true ``` #### StrictMode ```js import React from "react"; import * as ReactIs from 'react-is'; ReactIs.isStrictMode(<React.StrictMode />); // true ReactIs.typeOf(<React.StrictMode />) === ReactIs.StrictMode; // true ``` # ci-info Get details about the current Continuous Integration environment. Please [open an issue](https://github.com/watson/ci-info/issues/new?template=ci-server-not-detected.md) if your CI server isn't properly detected :) [](https://www.npmjs.com/package/ci-info) [](https://github.com/watson/ci-info/actions) [](https://github.com/feross/standard) ## Installation ```bash npm install ci-info --save ``` ## Usage ```js var ci = require('ci-info') if (ci.isCI) { console.log('The name of the CI server is:', ci.name) } else { console.log('This program is not running on a CI server') } ``` ## Supported CI tools Officially supported CI servers: | Name | Constant | isPR | | ------------------------------------------------------------------------------- | -------------------- | ---- | | [AWS CodeBuild](https://aws.amazon.com/codebuild/) | `ci.CODEBUILD` | 🚫 | | [AppVeyor](http://www.appveyor.com) | `ci.APPVEYOR` | ✅ | | [Azure Pipelines](https://azure.microsoft.com/en-us/services/devops/pipelines/) | `ci.AZURE_PIPELINES` | ✅ | | [Appcircle](https://appcircle.io/) | `ci.APPCIRCLE` | 🚫 | | [Bamboo](https://www.atlassian.com/software/bamboo) by Atlassian | `ci.BAMBOO` | 🚫 | | [Bitbucket Pipelines](https://bitbucket.org/product/features/pipelines) | `ci.BITBUCKET` | ✅ | | [Bitrise](https://www.bitrise.io/) | `ci.BITRISE` | ✅ | | [Buddy](https://buddy.works/) | `ci.BUDDY` | ✅ | | [Buildkite](https://buildkite.com) | `ci.BUILDKITE` | ✅ | | [CircleCI](http://circleci.com) | `ci.CIRCLE` | ✅ | | [Cirrus CI](https://cirrus-ci.org) | `ci.CIRRUS` | ✅ | | [Codefresh](https://codefresh.io/) | `ci.CODEFRESH` | ✅ | | [Codeship](https://codeship.com) | `ci.CODESHIP` | 🚫 | | [Drone](https://drone.io) | `ci.DRONE` | ✅ | | [dsari](https://github.com/rfinnie/dsari) | `ci.DSARI` | 🚫 | | [GitHub Actions](https://github.com/features/actions/) | `ci.GITHUB_ACTIONS` | ✅ | | [GitLab CI](https://about.gitlab.com/gitlab-ci/) | `ci.GITLAB` | ✅ | | [GoCD](https://www.go.cd/) | `ci.GOCD` | 🚫 | | [Hudson](http://hudson-ci.org) | `ci.HUDSON` | 🚫 | | [Jenkins CI](https://jenkins-ci.org) | `ci.JENKINS` | ✅ | | [LayerCI](https://layerci.com/) | `ci.LAYERCI` | ✅ | | [Magnum CI](https://magnum-ci.com) | `ci.MAGNUM` | 🚫 | | [Netlify CI](https://www.netlify.com/) | `ci.NETLIFY` | ✅ | | [Nevercode](http://nevercode.io/) | `ci.NEVERCODE` | ✅ | | [Render](https://render.com/) | `ci.RENDER` | ✅ | | [Sail CI](https://sail.ci/) | `ci.SAIL` | ✅ | | [Screwdriver](https://screwdriver.cd/) | `ci.SCREWDRIVER` | ✅ | | [Semaphore](https://semaphoreci.com) | `ci.SEMAPHORE` | ✅ | | [Shippable](https://www.shippable.com/) | `ci.SHIPPABLE` | ✅ | | [Solano CI](https://www.solanolabs.com/) | `ci.SOLANO` | ✅ | | [Strider CD](https://strider-cd.github.io/) | `ci.STRIDER` | 🚫 | | [TaskCluster](http://docs.taskcluster.net) | `ci.TASKCLUSTER` | 🚫 | | [TeamCity](https://www.jetbrains.com/teamcity/) by JetBrains | `ci.TEAMCITY` | 🚫 | | [Travis CI](http://travis-ci.org) | `ci.TRAVIS` | ✅ | | [Vercel](https://vercel.com/) | `ci.VERCEL` | 🚫 | | [Visual Studio App Center](https://appcenter.ms/) | `ci.APPCENTER` | 🚫 | ## API ### `ci.name` Returns a string containing name of the CI server the code is running on. If CI server is not detected, it returns `null`. Don't depend on the value of this string not to change for a specific vendor. If you find your self writing `ci.name === 'Travis CI'`, you most likely want to use `ci.TRAVIS` instead. ### `ci.isCI` Returns a boolean. Will be `true` if the code is running on a CI server, otherwise `false`. Some CI servers not listed here might still trigger the `ci.isCI` boolean to be set to `true` if they use certain vendor neutral environment variables. In those cases `ci.name` will be `null` and no vendor specific boolean will be set to `true`. ### `ci.isPR` Returns a boolean if PR detection is supported for the current CI server. Will be `true` if a PR is being tested, otherwise `false`. If PR detection is not supported for the current CI server, the value will be `null`. ### `ci.<VENDOR-CONSTANT>` A vendor specific boolean constant is exposed for each support CI vendor. A constant will be `true` if the code is determined to run on the given CI server, otherwise `false`. Examples of vendor constants are `ci.TRAVIS` or `ci.APPVEYOR`. For a complete list, see the support table above. Deprecated vendor constants that will be removed in the next major release: - `ci.TDDIUM` (Solano CI) This have been renamed `ci.SOLANO` ## License [MIT](LICENSE) # isexe Minimal module to check if a file is executable, and a normal file. Uses `fs.stat` and tests against the `PATHEXT` environment variable on Windows. ## USAGE ```javascript var isexe = require('isexe') isexe('some-file-name', function (err, isExe) { if (err) { console.error('probably file does not exist or something', err) } else if (isExe) { console.error('this thing can be run') } else { console.error('cannot be run') } }) // same thing but synchronous, throws errors var isExe = isexe.sync('some-file-name') // treat errors as just "not executable" isexe('maybe-missing-file', { ignoreErrors: true }, callback) var isExe = isexe.sync('maybe-missing-file', { ignoreErrors: true }) ``` ## API ### `isexe(path, [options], [callback])` Check if the path is executable. If no callback provided, and a global `Promise` object is available, then a Promise will be returned. Will raise whatever errors may be raised by `fs.stat`, unless `options.ignoreErrors` is set to true. ### `isexe.sync(path, [options])` Same as `isexe` but returns the value and throws any errors raised. ### Options * `ignoreErrors` Treat all errors as "no, this is not executable", but don't raise them. * `uid` Number to use as the user id * `gid` Number to use as the group id * `pathExt` List of path extensions to use instead of `PATHEXT` environment variable on Windows. # fs-minipass Filesystem streams based on [minipass](http://npm.im/minipass). 4 classes are exported: - ReadStream - ReadStreamSync - WriteStream - WriteStreamSync When using `ReadStreamSync`, all of the data is made available immediately upon consuming the stream. Nothing is buffered in memory when the stream is constructed. If the stream is piped to a writer, then it will synchronously `read()` and emit data into the writer as fast as the writer can consume it. (That is, it will respect backpressure.) If you call `stream.read()` then it will read the entire file and return the contents. When using `WriteStreamSync`, every write is flushed to the file synchronously. If your writes all come in a single tick, then it'll write it all out in a single tick. It's as synchronous as you are. The async versions work much like their node builtin counterparts, with the exception of introducing significantly less Stream machinery overhead. ## USAGE It's just streams, you pipe them or read() them or write() to them. ```js const fsm = require('fs-minipass') const readStream = new fsm.ReadStream('file.txt') const writeStream = new fsm.WriteStream('output.txt') writeStream.write('some file header or whatever\n') readStream.pipe(writeStream) ``` ## ReadStream(path, options) Path string is required, but somewhat irrelevant if an open file descriptor is passed in as an option. Options: - `fd` Pass in a numeric file descriptor, if the file is already open. - `readSize` The size of reads to do, defaults to 16MB - `size` The size of the file, if known. Prevents zero-byte read() call at the end. - `autoClose` Set to `false` to prevent the file descriptor from being closed when the file is done being read. ## WriteStream(path, options) Path string is required, but somewhat irrelevant if an open file descriptor is passed in as an option. Options: - `fd` Pass in a numeric file descriptor, if the file is already open. - `mode` The mode to create the file with. Defaults to `0o666`. - `start` The position in the file to start reading. If not specified, then the file will start writing at position zero, and be truncated by default. - `autoClose` Set to `false` to prevent the file descriptor from being closed when the stream is ended. - `flags` Flags to use when opening the file. Irrelevant if `fd` is passed in, since file won't be opened in that case. Defaults to `'a'` if a `pos` is specified, or `'w'` otherwise. <p align="center"> <a href="http://gulpjs.com"> <img height="257" width="114" src="https://raw.githubusercontent.com/gulpjs/artwork/master/gulp-2x.png"> </a> </p> # v8flags [![NPM version][npm-image]][npm-url] [![Downloads][downloads-image]][npm-url] [![Travis Build Status][travis-image]][travis-url] [![AppVeyor Build Status][appveyor-image]][appveyor-url] [![Coveralls Status][coveralls-image]][coveralls-url] [![Gitter chat][gitter-image]][gitter-url] Get available v8 and Node.js flags. ## Usage ```js const v8flags = require('v8flags'); v8flags(function(err, results) { console.log(results); // [ '--use_strict', // '--es5_readonly', // '--es52_globals', // '--harmony_typeof', // '--harmony_scoping', // '--harmony_modules', // '--harmony_proxies', // '--harmony_collections', // '--harmony', // ... }); ``` ## API ### `v8flags(cb)` Finds the available flags and calls the passed callback with any errors and an array of flag results. ### `v8flags.configfile` The name of the cache file for flags. ### `v8flags.configPath` The filepath location of the `configfile` above. ## License MIT [downloads-image]: http://img.shields.io/npm/dm/v8flags.svg [npm-url]: https://www.npmjs.com/package/v8flags [npm-image]: http://img.shields.io/npm/v/v8flags.svg [travis-url]: https://travis-ci.org/gulpjs/v8flags [travis-image]: http://img.shields.io/travis/gulpjs/v8flags.svg?label=travis-ci [appveyor-url]: https://ci.appveyor.com/project/gulpjs/v8flags [appveyor-image]: https://img.shields.io/appveyor/ci/gulpjs/v8flags.svg?label=appveyor [coveralls-url]: https://coveralls.io/r/gulpjs/v8flags [coveralls-image]: http://img.shields.io/coveralls/gulpjs/v8flags/master.svg [gitter-url]: https://gitter.im/gulpjs/gulp [gitter-image]: https://badges.gitter.im/gulpjs/gulp.svg # mkdirp-classic Just a non-deprecated mirror of [mkdirp 0.5.2](https://github.com/substack/node-mkdirp/tree/0.5.1) for use in modules where we depend on the non promise interface. ``` npm install mkdirp-classic ``` ## Usage ``` js // See the above link ``` ## License MIT # levn [](https://travis-ci.org/gkz/levn) <a name="levn" /> __Light ECMAScript (JavaScript) Value Notation__ Levn is a library which allows you to parse a string into a JavaScript value based on an expected type. It is meant for short amounts of human entered data (eg. config files, command line arguments). Levn aims to concisely describe JavaScript values in text, and allow for the extraction and validation of those values. Levn uses [type-check](https://github.com/gkz/type-check) for its type format, and to validate the results. MIT license. Version 0.4.1. __How is this different than JSON?__ levn is meant to be written by humans only, is (due to the previous point) much more concise, can be validated against supplied types, has regex and date literals, and can easily be extended with custom types. On the other hand, it is probably slower and thus less efficient at transporting large amounts of data, which is fine since this is not its purpose. npm install levn For updates on levn, [follow me on twitter](https://twitter.com/gkzahariev). ## Quick Examples ```js var parse = require('levn').parse; parse('Number', '2'); // 2 parse('String', '2'); // '2' parse('String', 'levn'); // 'levn' parse('String', 'a b'); // 'a b' parse('Boolean', 'true'); // true parse('Date', '#2011-11-11#'); // (Date object) parse('Date', '2011-11-11'); // (Date object) parse('RegExp', '/[a-z]/gi'); // /[a-z]/gi parse('RegExp', 're'); // /re/ parse('Int', '2'); // 2 parse('Number | String', 'str'); // 'str' parse('Number | String', '2'); // 2 parse('[Number]', '[1,2,3]'); // [1,2,3] parse('(String, Boolean)', '(hi, false)'); // ['hi', false] parse('{a: String, b: Number}', '{a: str, b: 2}'); // {a: 'str', b: 2} // at the top level, you can ommit surrounding delimiters parse('[Number]', '1,2,3'); // [1,2,3] parse('(String, Boolean)', 'hi, false'); // ['hi', false] parse('{a: String, b: Number}', 'a: str, b: 2'); // {a: 'str', b: 2} // wildcard - auto choose type parse('*', '[hi,(null,[42]),{k: true}]'); // ['hi', [null, [42]], {k: true}] ``` ## Usage `require('levn');` returns an object that exposes three properties. `VERSION` is the current version of the library as a string. `parse` and `parsedTypeParse` are functions. ```js // parse(type, input, options); parse('[Number]', '1,2,3'); // [1, 2, 3] // parsedTypeParse(parsedType, input, options); var parsedType = require('type-check').parseType('[Number]'); parsedTypeParse(parsedType, '1,2,3'); // [1, 2, 3] ``` ### parse(type, input, options) `parse` casts the string `input` into a JavaScript value according to the specified `type` in the [type format](https://github.com/gkz/type-check#type-format) (and taking account the optional `options`) and returns the resulting JavaScript value. ##### arguments * type - `String` - the type written in the [type format](https://github.com/gkz/type-check#type-format) which to check against * input - `String` - the value written in the [levn format](#levn-format) * options - `Maybe Object` - an optional parameter specifying additional [options](#options) ##### returns `*` - the resulting JavaScript value ##### example ```js parse('[Number]', '1,2,3'); // [1, 2, 3] ``` ### parsedTypeParse(parsedType, input, options) `parsedTypeParse` casts the string `input` into a JavaScript value according to the specified `type` which has already been parsed (and taking account the optional `options`) and returns the resulting JavaScript value. You can parse a type using the [type-check](https://github.com/gkz/type-check) library's `parseType` function. ##### arguments * type - `Object` - the type in the parsed type format which to check against * input - `String` - the value written in the [levn format](#levn-format) * options - `Maybe Object` - an optional parameter specifying additional [options](#options) ##### returns `*` - the resulting JavaScript value ##### example ```js var parsedType = require('type-check').parseType('[Number]'); parsedTypeParse(parsedType, '1,2,3'); // [1, 2, 3] ``` ## Levn Format Levn can use the type information you provide to choose the appropriate value to produce from the input. For the same input, it will choose a different output value depending on the type provided. For example, `parse('Number', '2')` will produce the number `2`, but `parse('String', '2')` will produce the string `"2"`. If you do not provide type information, and simply use `*`, levn will parse the input according the unambiguous "explicit" mode, which we will now detail - you can also set the `explicit` option to true manually in the [options](#options). * `"string"`, `'string'` are parsed as a String, eg. `"a msg"` is `"a msg"` * `#date#` is parsed as a Date, eg. `#2011-11-11#` is `new Date('2011-11-11')` * `/regexp/flags` is parsed as a RegExp, eg. `/re/gi` is `/re/gi` * `undefined`, `null`, `NaN`, `true`, and `false` are all their JavaScript equivalents * `[element1, element2, etc]` is an Array, and the casting procedure is recursively applied to each element. Eg. `[1,2,3]` is `[1,2,3]`. * `(element1, element2, etc)` is an tuple, and the casting procedure is recursively applied to each element. Eg. `(1, a)` is `(1, a)` (is `[1, 'a']`). * `{key1: val1, key2: val2, ...}` is an Object, and the casting procedure is recursively applied to each property. Eg. `{a: 1, b: 2}` is `{a: 1, b: 2}`. * Any test which does not fall under the above, and which does not contain special characters (`[``]``(``)``{``}``:``,`) is a string, eg. `$12- blah` is `"$12- blah"`. If you do provide type information, you can make your input more concise as the program already has some information about what it expects. Please see the [type format](https://github.com/gkz/type-check#type-format) section of [type-check](https://github.com/gkz/type-check) for more information about how to specify types. There are some rules about what levn can do with the information: * If a String is expected, and only a String, all characters of the input (including any special ones) will become part of the output. Eg. `[({})]` is `"[({})]"`, and `"hi"` is `'"hi"'`. * If a Date is expected, the surrounding `#` can be omitted from date literals. Eg. `2011-11-11` is `new Date('2011-11-11')`. * If a RegExp is expected, no flags need to be specified, and the regex is not using any of the special characters,the opening and closing `/` can be omitted - this will have the affect of setting the source of the regex to the input. Eg. `regex` is `/regex/`. * If an Array is expected, and it is the root node (at the top level), the opening `[` and closing `]` can be omitted. Eg. `1,2,3` is `[1,2,3]`. * If a tuple is expected, and it is the root node (at the top level), the opening `(` and closing `)` can be omitted. Eg. `1, a` is `(1, a)` (is `[1, 'a']`). * If an Object is expected, and it is the root node (at the top level), the opening `{` and closing `}` can be omitted. Eg `a: 1, b: 2` is `{a: 1, b: 2}`. If you list multiple types (eg. `Number | String`), it will first attempt to cast to the first type and then validate - if the validation fails it will move on to the next type and so forth, left to right. You must be careful as some types will succeed with any input, such as String. Thus put String at the end of your list. In non-explicit mode, Date and RegExp will succeed with a large variety of input - also be careful with these and list them near the end if not last in your list. Whitespace between special characters and elements is inconsequential. ## Options Options is an object. It is an optional parameter to the `parse` and `parsedTypeParse` functions. ### Explicit A `Boolean`. By default it is `false`. __Example:__ ```js parse('RegExp', 're', {explicit: false}); // /re/ parse('RegExp', 're', {explicit: true}); // Error: ... does not type check... parse('RegExp | String', 're', {explicit: true}); // 're' ``` `explicit` sets whether to be in explicit mode or not. Using `*` automatically activates explicit mode. For more information, read the [levn format](#levn-format) section. ### customTypes An `Object`. Empty `{}` by default. __Example:__ ```js var options = { customTypes: { Even: { typeOf: 'Number', validate: function (x) { return x % 2 === 0; }, cast: function (x) { return {type: 'Just', value: parseInt(x)}; } } } } parse('Even', '2', options); // 2 parse('Even', '3', options); // Error: Value: "3" does not type check... ``` __Another Example:__ ```js function Person(name, age){ this.name = name; this.age = age; } var options = { customTypes: { Person: { typeOf: 'Object', validate: function (x) { x instanceof Person; }, cast: function (value, options, typesCast) { var name, age; if ({}.toString.call(value).slice(8, -1) !== 'Object') { return {type: 'Nothing'}; } name = typesCast(value.name, [{type: 'String'}], options); age = typesCast(value.age, [{type: 'Numger'}], options); return {type: 'Just', value: new Person(name, age)}; } } } parse('Person', '{name: Laura, age: 25}', options); // Person {name: 'Laura', age: 25} ``` `customTypes` is an object whose keys are the name of the types, and whose values are an object with three properties, `typeOf`, `validate`, and `cast`. For more information about `typeOf` and `validate`, please see the [custom types](https://github.com/gkz/type-check#custom-types) section of type-check. `cast` is a function which receives three arguments, the value under question, options, and the typesCast function. In `cast`, attempt to cast the value into the specified type. If you are successful, return an object in the format `{type: 'Just', value: CAST-VALUE}`, if you know it won't work, return `{type: 'Nothing'}`. You can use the `typesCast` function to cast any child values. Remember to pass `options` to it. In your function you can also check for `options.explicit` and act accordingly. ## Technical About `levn` is written in [LiveScript](http://livescript.net/) - a language that compiles to JavaScript. It uses [type-check](https://github.com/gkz/type-check) to both parse types and validate values. It also uses the [prelude.ls](http://preludels.com/) library. # cliui  [](https://www.npmjs.com/package/cliui) [](https://conventionalcommits.org)  easily create complex multi-column command-line-interfaces. ## Example ```js const ui = require('cliui')() ui.div('Usage: $0 [command] [options]') ui.div({ text: 'Options:', padding: [2, 0, 1, 0] }) ui.div( { text: "-f, --file", width: 20, padding: [0, 4, 0, 4] }, { text: "the file to load." + chalk.green("(if this description is long it wraps).") , width: 20 }, { text: chalk.red("[required]"), align: 'right' } ) console.log(ui.toString()) ``` ## Deno/ESM Support As of `v7` `cliui` supports [Deno](https://github.com/denoland/deno) and [ESM](https://nodejs.org/api/esm.html#esm_ecmascript_modules): ```typescript import cliui from "https://deno.land/x/cliui/deno.ts"; const ui = cliui({}) ui.div('Usage: $0 [command] [options]') ui.div({ text: 'Options:', padding: [2, 0, 1, 0] }) ui.div({ text: "-f, --file", width: 20, padding: [0, 4, 0, 4] }) console.log(ui.toString()) ``` <img width="500" src="screenshot.png"> ## Layout DSL cliui exposes a simple layout DSL: If you create a single `ui.div`, passing a string rather than an object: * `\n`: characters will be interpreted as new rows. * `\t`: characters will be interpreted as new columns. * `\s`: characters will be interpreted as padding. **as an example...** ```js var ui = require('./')({ width: 60 }) ui.div( 'Usage: node ./bin/foo.js\n' + ' <regex>\t provide a regex\n' + ' <glob>\t provide a glob\t [required]' ) console.log(ui.toString()) ``` **will output:** ```shell Usage: node ./bin/foo.js <regex> provide a regex <glob> provide a glob [required] ``` ## Methods ```js cliui = require('cliui') ``` ### cliui({width: integer}) Specify the maximum width of the UI being generated. If no width is provided, cliui will try to get the current window's width and use it, and if that doesn't work, width will be set to `80`. ### cliui({wrap: boolean}) Enable or disable the wrapping of text in a column. ### cliui.div(column, column, column) Create a row with any number of columns, a column can either be a string, or an object with the following options: * **text:** some text to place in the column. * **width:** the width of a column. * **align:** alignment, `right` or `center`. * **padding:** `[top, right, bottom, left]`. * **border:** should a border be placed around the div? ### cliui.span(column, column, column) Similar to `div`, except the next row will be appended without a new line being created. ### cliui.resetOutput() Resets the UI elements of the current cliui instance, maintaining the values set for `width` and `wrap`. # homedir-polyfill [](https://www.npmjs.com/package/homedir-polyfill) [](https://npmjs.org/package/homedir-polyfill) [](https://npmjs.org/package/homedir-polyfill) [](https://travis-ci.org/doowb/homedir-polyfill) [](https://ci.appveyor.com/project/doowb/homedir-polyfill) > Node.js os.homedir polyfill for older versions of node.js. Please consider following this project's author, [Brian Woodward](https://github.com/doowb), and consider starring the project to show your :heart: and support. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save homedir-polyfill ``` ## Usage ```js var homedir = require('homedir-polyfill'); console.log(homedir()); //=> /Users/doowb ``` ## Reasoning This library is a polyfill for the [node.js os.homedir](https://nodejs.org/api/os.html#os_os_homedir) method found in modern versions of node.js. This implementation tries to follow the implementation found in `libuv` by finding the current user using the `process.geteuid()` method and the `/etc/passwd` file. This should usually work in a linux environment, but will also fallback to looking at user specific environment variables to build the user's home directory if neccessary. Since `/etc/passwd` is not available on windows platforms, this implementation will use environment variables to find the home directory. In modern versions of node.js, [os.homedir](https://nodejs.org/api/os.html#os_os_homedir) is used. ## About <details> <summary><strong>Contributing</strong></summary> Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). Please read the [contributing guide](contributing.md) for advice on opening issues, pull requests, and coding standards. </details> <details> <summary><strong>Running Tests</strong></summary> Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` </details> <details> <summary><strong>Building docs</strong></summary> _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` </details> ### Related projects You might also be interested in these projects: [parse-passwd](https://www.npmjs.com/package/parse-passwd): Parse a passwd file into a list of users. | [homepage](https://github.com/doowb/parse-passwd "Parse a passwd file into a list of users.") ### Contributors | **Commits** | **Contributor** | | --- | --- | | 19 | [doowb](https://github.com/doowb) | | 2 | [martinheidegger](https://github.com/martinheidegger) | ### Author **Brian Woodward** * [GitHub Profile](https://github.com/doowb) * [Twitter Profile](https://twitter.com/doowb) * [LinkedIn Profile](https://linkedin.com/in/woodwardbrian) ### License Copyright © 2016 - 2019, [Brian Woodward](https://github.com/doowb). Released under the [MIT License](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.8.0, on February 21, 2019._ long.js ======= A Long class for representing a 64 bit two's-complement integer value derived from the [Closure Library](https://github.com/google/closure-library) for stand-alone use and extended with unsigned support. [](https://travis-ci.org/dcodeIO/long.js) Background ---------- As of [ECMA-262 5th Edition](http://ecma262-5.com/ELS5_HTML.htm#Section_8.5), "all the positive and negative integers whose magnitude is no greater than 2<sup>53</sup> are representable in the Number type", which is "representing the doubleprecision 64-bit format IEEE 754 values as specified in the IEEE Standard for Binary Floating-Point Arithmetic". The [maximum safe integer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER) in JavaScript is 2<sup>53</sup>-1. Example: 2<sup>64</sup>-1 is 1844674407370955**1615** but in JavaScript it evaluates to 1844674407370955**2000**. Furthermore, bitwise operators in JavaScript "deal only with integers in the range −2<sup>31</sup> through 2<sup>31</sup>−1, inclusive, or in the range 0 through 2<sup>32</sup>−1, inclusive. These operators accept any value of the Number type but first convert each such value to one of 2<sup>32</sup> integer values." In some use cases, however, it is required to be able to reliably work with and perform bitwise operations on the full 64 bits. This is where long.js comes into play. Usage ----- The class is compatible with CommonJS and AMD loaders and is exposed globally as `Long` if neither is available. ```javascript var Long = require("long"); var longVal = new Long(0xFFFFFFFF, 0x7FFFFFFF); console.log(longVal.toString()); ... ``` API --- ### Constructor * new **Long**(low: `number`, high: `number`, unsigned?: `boolean`)<br /> Constructs a 64 bit two's-complement integer, given its low and high 32 bit values as *signed* integers. See the from* functions below for more convenient ways of constructing Longs. ### Fields * Long#**low**: `number`<br /> The low 32 bits as a signed value. * Long#**high**: `number`<br /> The high 32 bits as a signed value. * Long#**unsigned**: `boolean`<br /> Whether unsigned or not. ### Constants * Long.**ZERO**: `Long`<br /> Signed zero. * Long.**ONE**: `Long`<br /> Signed one. * Long.**NEG_ONE**: `Long`<br /> Signed negative one. * Long.**UZERO**: `Long`<br /> Unsigned zero. * Long.**UONE**: `Long`<br /> Unsigned one. * Long.**MAX_VALUE**: `Long`<br /> Maximum signed value. * Long.**MIN_VALUE**: `Long`<br /> Minimum signed value. * Long.**MAX_UNSIGNED_VALUE**: `Long`<br /> Maximum unsigned value. ### Utility * Long.**isLong**(obj: `*`): `boolean`<br /> Tests if the specified object is a Long. * Long.**fromBits**(lowBits: `number`, highBits: `number`, unsigned?: `boolean`): `Long`<br /> Returns a Long representing the 64 bit integer that comes by concatenating the given low and high bits. Each is assumed to use 32 bits. * Long.**fromBytes**(bytes: `number[]`, unsigned?: `boolean`, le?: `boolean`): `Long`<br /> Creates a Long from its byte representation. * Long.**fromBytesLE**(bytes: `number[]`, unsigned?: `boolean`): `Long`<br /> Creates a Long from its little endian byte representation. * Long.**fromBytesBE**(bytes: `number[]`, unsigned?: `boolean`): `Long`<br /> Creates a Long from its big endian byte representation. * Long.**fromInt**(value: `number`, unsigned?: `boolean`): `Long`<br /> Returns a Long representing the given 32 bit integer value. * Long.**fromNumber**(value: `number`, unsigned?: `boolean`): `Long`<br /> Returns a Long representing the given value, provided that it is a finite number. Otherwise, zero is returned. * Long.**fromString**(str: `string`, unsigned?: `boolean`, radix?: `number`)<br /> Long.**fromString**(str: `string`, radix: `number`)<br /> Returns a Long representation of the given string, written using the specified radix. * Long.**fromValue**(val: `*`, unsigned?: `boolean`): `Long`<br /> Converts the specified value to a Long using the appropriate from* function for its type. ### Methods * Long#**add**(addend: `Long | number | string`): `Long`<br /> Returns the sum of this and the specified Long. * Long#**and**(other: `Long | number | string`): `Long`<br /> Returns the bitwise AND of this Long and the specified. * Long#**compare**/**comp**(other: `Long | number | string`): `number`<br /> Compares this Long's value with the specified's. Returns `0` if they are the same, `1` if the this is greater and `-1` if the given one is greater. * Long#**divide**/**div**(divisor: `Long | number | string`): `Long`<br /> Returns this Long divided by the specified. * Long#**equals**/**eq**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value equals the specified's. * Long#**getHighBits**(): `number`<br /> Gets the high 32 bits as a signed integer. * Long#**getHighBitsUnsigned**(): `number`<br /> Gets the high 32 bits as an unsigned integer. * Long#**getLowBits**(): `number`<br /> Gets the low 32 bits as a signed integer. * Long#**getLowBitsUnsigned**(): `number`<br /> Gets the low 32 bits as an unsigned integer. * Long#**getNumBitsAbs**(): `number`<br /> Gets the number of bits needed to represent the absolute value of this Long. * Long#**greaterThan**/**gt**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value is greater than the specified's. * Long#**greaterThanOrEqual**/**gte**/**ge**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value is greater than or equal the specified's. * Long#**isEven**(): `boolean`<br /> Tests if this Long's value is even. * Long#**isNegative**(): `boolean`<br /> Tests if this Long's value is negative. * Long#**isOdd**(): `boolean`<br /> Tests if this Long's value is odd. * Long#**isPositive**(): `boolean`<br /> Tests if this Long's value is positive. * Long#**isZero**/**eqz**(): `boolean`<br /> Tests if this Long's value equals zero. * Long#**lessThan**/**lt**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value is less than the specified's. * Long#**lessThanOrEqual**/**lte**/**le**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value is less than or equal the specified's. * Long#**modulo**/**mod**/**rem**(divisor: `Long | number | string`): `Long`<br /> Returns this Long modulo the specified. * Long#**multiply**/**mul**(multiplier: `Long | number | string`): `Long`<br /> Returns the product of this and the specified Long. * Long#**negate**/**neg**(): `Long`<br /> Negates this Long's value. * Long#**not**(): `Long`<br /> Returns the bitwise NOT of this Long. * Long#**notEquals**/**neq**/**ne**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value differs from the specified's. * Long#**or**(other: `Long | number | string`): `Long`<br /> Returns the bitwise OR of this Long and the specified. * Long#**shiftLeft**/**shl**(numBits: `Long | number | string`): `Long`<br /> Returns this Long with bits shifted to the left by the given amount. * Long#**shiftRight**/**shr**(numBits: `Long | number | string`): `Long`<br /> Returns this Long with bits arithmetically shifted to the right by the given amount. * Long#**shiftRightUnsigned**/**shru**/**shr_u**(numBits: `Long | number | string`): `Long`<br /> Returns this Long with bits logically shifted to the right by the given amount. * Long#**subtract**/**sub**(subtrahend: `Long | number | string`): `Long`<br /> Returns the difference of this and the specified Long. * Long#**toBytes**(le?: `boolean`): `number[]`<br /> Converts this Long to its byte representation. * Long#**toBytesLE**(): `number[]`<br /> Converts this Long to its little endian byte representation. * Long#**toBytesBE**(): `number[]`<br /> Converts this Long to its big endian byte representation. * Long#**toInt**(): `number`<br /> Converts the Long to a 32 bit integer, assuming it is a 32 bit integer. * Long#**toNumber**(): `number`<br /> Converts the Long to a the nearest floating-point representation of this value (double, 53 bit mantissa). * Long#**toSigned**(): `Long`<br /> Converts this Long to signed. * Long#**toString**(radix?: `number`): `string`<br /> Converts the Long to a string written in the specified radix. * Long#**toUnsigned**(): `Long`<br /> Converts this Long to unsigned. * Long#**xor**(other: `Long | number | string`): `Long`<br /> Returns the bitwise XOR of this Long and the given one. Building -------- To build an UMD bundle to `dist/long.js`, run: ``` $> npm install $> npm run build ``` Running the [tests](./tests): ``` $> npm test ``` # get-caller-file [](https://travis-ci.org/stefanpenner/get-caller-file) [](https://ci.appveyor.com/project/embercli/get-caller-file/branch/master) This is a utility, which allows a function to figure out from which file it was invoked. It does so by inspecting v8's stack trace at the time it is invoked. Inspired by http://stackoverflow.com/questions/13227489 *note: this relies on Node/V8 specific APIs, as such other runtimes may not work* ## Installation ```bash yarn add get-caller-file ``` ## Usage Given: ```js // ./foo.js const getCallerFile = require('get-caller-file'); module.exports = function() { return getCallerFile(); // figures out who called it }; ``` ```js // index.js const foo = require('./foo'); foo() // => /full/path/to/this/file/index.js ``` ## Options: * `getCallerFile(position = 2)`: where position is stack frame whos fileName we want. functional-red-black-tree ========================= A [fully persistent](http://en.wikipedia.org/wiki/Persistent_data_structure) [red-black tree](http://en.wikipedia.org/wiki/Red%E2%80%93black_tree) written 100% in JavaScript. Works both in node.js and in the browser via [browserify](http://browserify.org/). Functional (or fully presistent) data structures allow for non-destructive updates. So if you insert an element into the tree, it returns a new tree with the inserted element rather than destructively updating the existing tree in place. Doing this requires using extra memory, and if one were naive it could cost as much as reallocating the entire tree. Instead, this data structure saves some memory by recycling references to previously allocated subtrees. This requires using only O(log(n)) additional memory per update instead of a full O(n) copy. Some advantages of this is that it is possible to apply insertions and removals to the tree while still iterating over previous versions of the tree. Functional and persistent data structures can also be useful in many geometric algorithms like point location within triangulations or ray queries, and can be used to analyze the history of executing various algorithms. This added power though comes at a cost, since it is generally a bit slower to use a functional data structure than an imperative version. However, if your application needs this behavior then you may consider using this module. # Install npm install functional-red-black-tree # Example Here is an example of some basic usage: ```javascript //Load the library var createTree = require("functional-red-black-tree") //Create a tree var t1 = createTree() //Insert some items into the tree var t2 = t1.insert(1, "foo") var t3 = t2.insert(2, "bar") //Remove something var t4 = t3.remove(1) ``` # API ```javascript var createTree = require("functional-red-black-tree") ``` ## Overview - [Tree methods](#tree-methods) - [`var tree = createTree([compare])`](#var-tree-=-createtreecompare) - [`tree.keys`](#treekeys) - [`tree.values`](#treevalues) - [`tree.length`](#treelength) - [`tree.get(key)`](#treegetkey) - [`tree.insert(key, value)`](#treeinsertkey-value) - [`tree.remove(key)`](#treeremovekey) - [`tree.find(key)`](#treefindkey) - [`tree.ge(key)`](#treegekey) - [`tree.gt(key)`](#treegtkey) - [`tree.lt(key)`](#treeltkey) - [`tree.le(key)`](#treelekey) - [`tree.at(position)`](#treeatposition) - [`tree.begin`](#treebegin) - [`tree.end`](#treeend) - [`tree.forEach(visitor(key,value)[, lo[, hi]])`](#treeforEachvisitorkeyvalue-lo-hi) - [`tree.root`](#treeroot) - [Node properties](#node-properties) - [`node.key`](#nodekey) - [`node.value`](#nodevalue) - [`node.left`](#nodeleft) - [`node.right`](#noderight) - [Iterator methods](#iterator-methods) - [`iter.key`](#iterkey) - [`iter.value`](#itervalue) - [`iter.node`](#iternode) - [`iter.tree`](#itertree) - [`iter.index`](#iterindex) - [`iter.valid`](#itervalid) - [`iter.clone()`](#iterclone) - [`iter.remove()`](#iterremove) - [`iter.update(value)`](#iterupdatevalue) - [`iter.next()`](#iternext) - [`iter.prev()`](#iterprev) - [`iter.hasNext`](#iterhasnext) - [`iter.hasPrev`](#iterhasprev) ## Tree methods ### `var tree = createTree([compare])` Creates an empty functional tree * `compare` is an optional comparison function, same semantics as array.sort() **Returns** An empty tree ordered by `compare` ### `tree.keys` A sorted array of all the keys in the tree ### `tree.values` An array array of all the values in the tree ### `tree.length` The number of items in the tree ### `tree.get(key)` Retrieves the value associated to the given key * `key` is the key of the item to look up **Returns** The value of the first node associated to `key` ### `tree.insert(key, value)` Creates a new tree with the new pair inserted. * `key` is the key of the item to insert * `value` is the value of the item to insert **Returns** A new tree with `key` and `value` inserted ### `tree.remove(key)` Removes the first item with `key` in the tree * `key` is the key of the item to remove **Returns** A new tree with the given item removed if it exists ### `tree.find(key)` Returns an iterator pointing to the first item in the tree with `key`, otherwise `null`. ### `tree.ge(key)` Find the first item in the tree whose key is `>= key` * `key` is the key to search for **Returns** An iterator at the given element. ### `tree.gt(key)` Finds the first item in the tree whose key is `> key` * `key` is the key to search for **Returns** An iterator at the given element ### `tree.lt(key)` Finds the last item in the tree whose key is `< key` * `key` is the key to search for **Returns** An iterator at the given element ### `tree.le(key)` Finds the last item in the tree whose key is `<= key` * `key` is the key to search for **Returns** An iterator at the given element ### `tree.at(position)` Finds an iterator starting at the given element * `position` is the index at which the iterator gets created **Returns** An iterator starting at position ### `tree.begin` An iterator pointing to the first element in the tree ### `tree.end` An iterator pointing to the last element in the tree ### `tree.forEach(visitor(key,value)[, lo[, hi]])` Walks a visitor function over the nodes of the tree in order. * `visitor(key,value)` is a callback that gets executed on each node. If a truthy value is returned from the visitor, then iteration is stopped. * `lo` is an optional start of the range to visit (inclusive) * `hi` is an optional end of the range to visit (non-inclusive) **Returns** The last value returned by the callback ### `tree.root` Returns the root node of the tree ## Node properties Each node of the tree has the following properties: ### `node.key` The key associated to the node ### `node.value` The value associated to the node ### `node.left` The left subtree of the node ### `node.right` The right subtree of the node ## Iterator methods ### `iter.key` The key of the item referenced by the iterator ### `iter.value` The value of the item referenced by the iterator ### `iter.node` The value of the node at the iterator's current position. `null` is iterator is node valid. ### `iter.tree` The tree associated to the iterator ### `iter.index` Returns the position of this iterator in the sequence. ### `iter.valid` Checks if the iterator is valid ### `iter.clone()` Makes a copy of the iterator ### `iter.remove()` Removes the item at the position of the iterator **Returns** A new binary search tree with `iter`'s item removed ### `iter.update(value)` Updates the value of the node in the tree at this iterator **Returns** A new binary search tree with the corresponding node updated ### `iter.next()` Advances the iterator to the next position ### `iter.prev()` Moves the iterator backward one element ### `iter.hasNext` If true, then the iterator is not at the end of the sequence ### `iter.hasPrev` If true, then the iterator is not at the beginning of the sequence # Credits (c) 2013 Mikola Lysenko. MIT License # Source Map Support [](https://travis-ci.org/evanw/node-source-map-support) This module provides source map support for stack traces in node via the [V8 stack trace API](https://github.com/v8/v8/wiki/Stack-Trace-API). It uses the [source-map](https://github.com/mozilla/source-map) module to replace the paths and line numbers of source-mapped files with their original paths and line numbers. The output mimics node's stack trace format with the goal of making every compile-to-JS language more of a first-class citizen. Source maps are completely general (not specific to any one language) so you can use source maps with multiple compile-to-JS languages in the same node process. ## Installation and Usage #### Node support ``` $ npm install source-map-support ``` Source maps can be generated using libraries such as [source-map-index-generator](https://github.com/twolfson/source-map-index-generator). Once you have a valid source map, place a source mapping comment somewhere in the file (usually done automatically or with an option by your transpiler): ``` //# sourceMappingURL=path/to/source.map ``` If multiple sourceMappingURL comments exist in one file, the last sourceMappingURL comment will be respected (e.g. if a file mentions the comment in code, or went through multiple transpilers). The path should either be absolute or relative to the compiled file. From here you have two options. ##### CLI Usage ```bash node -r source-map-support/register compiled.js ``` ##### Programmatic Usage Put the following line at the top of the compiled file. ```js require('source-map-support').install(); ``` It is also possible to install the source map support directly by requiring the `register` module which can be handy with ES6: ```js import 'source-map-support/register' // Instead of: import sourceMapSupport from 'source-map-support' sourceMapSupport.install() ``` Note: if you're using babel-register, it includes source-map-support already. It is also very useful with Mocha: ``` $ mocha --require source-map-support/register tests/ ``` #### Browser support This library also works in Chrome. While the DevTools console already supports source maps, the V8 engine doesn't and `Error.prototype.stack` will be incorrect without this library. Everything will just work if you deploy your source files using [browserify](http://browserify.org/). Just make sure to pass the `--debug` flag to the browserify command so your source maps are included in the bundled code. This library also works if you use another build process or just include the source files directly. In this case, include the file `browser-source-map-support.js` in your page and call `sourceMapSupport.install()`. It contains the whole library already bundled for the browser using browserify. ```html <script src="browser-source-map-support.js"></script> <script>sourceMapSupport.install();</script> ``` This library also works if you use AMD (Asynchronous Module Definition), which is used in tools like [RequireJS](http://requirejs.org/). Just list `browser-source-map-support` as a dependency: ```html <script> define(['browser-source-map-support'], function(sourceMapSupport) { sourceMapSupport.install(); }); </script> ``` ## Options This module installs two things: a change to the `stack` property on `Error` objects and a handler for uncaught exceptions that mimics node's default exception handler (the handler can be seen in the demos below). You may want to disable the handler if you have your own uncaught exception handler. This can be done by passing an argument to the installer: ```js require('source-map-support').install({ handleUncaughtExceptions: false }); ``` This module loads source maps from the filesystem by default. You can provide alternate loading behavior through a callback as shown below. For example, [Meteor](https://github.com/meteor) keeps all source maps cached in memory to avoid disk access. ```js require('source-map-support').install({ retrieveSourceMap: function(source) { if (source === 'compiled.js') { return { url: 'original.js', map: fs.readFileSync('compiled.js.map', 'utf8') }; } return null; } }); ``` The module will by default assume a browser environment if XMLHttpRequest and window are defined. If either of these do not exist it will instead assume a node environment. In some rare cases, e.g. when running a browser emulation and where both variables are also set, you can explictly specify the environment to be either 'browser' or 'node'. ```js require('source-map-support').install({ environment: 'node' }); ``` To support files with inline source maps, the `hookRequire` options can be specified, which will monitor all source files for inline source maps. ```js require('source-map-support').install({ hookRequire: true }); ``` This monkey patches the `require` module loading chain, so is not enabled by default and is not recommended for any sort of production usage. ## Demos #### Basic Demo original.js: ```js throw new Error('test'); // This is the original code ``` compiled.js: ```js require('source-map-support').install(); throw new Error('test'); // This is the compiled code // The next line defines the sourceMapping. //# sourceMappingURL=compiled.js.map ``` compiled.js.map: ```json { "version": 3, "file": "compiled.js", "sources": ["original.js"], "names": [], "mappings": ";;AAAA,MAAM,IAAI" } ``` Run compiled.js using node (notice how the stack trace uses original.js instead of compiled.js): ``` $ node compiled.js original.js:1 throw new Error('test'); // This is the original code ^ Error: test at Object.<anonymous> (original.js:1:7) at Module._compile (module.js:456:26) at Object.Module._extensions..js (module.js:474:10) at Module.load (module.js:356:32) at Function.Module._load (module.js:312:12) at Function.Module.runMain (module.js:497:10) at startup (node.js:119:16) at node.js:901:3 ``` #### TypeScript Demo demo.ts: ```typescript declare function require(name: string); require('source-map-support').install(); class Foo { constructor() { this.bar(); } bar() { throw new Error('this is a demo'); } } new Foo(); ``` Compile and run the file using the TypeScript compiler from the terminal: ``` $ npm install source-map-support typescript $ node_modules/typescript/bin/tsc -sourcemap demo.ts $ node demo.js demo.ts:5 bar() { throw new Error('this is a demo'); } ^ Error: this is a demo at Foo.bar (demo.ts:5:17) at new Foo (demo.ts:4:24) at Object.<anonymous> (demo.ts:7:1) at Module._compile (module.js:456:26) at Object.Module._extensions..js (module.js:474:10) at Module.load (module.js:356:32) at Function.Module._load (module.js:312:12) at Function.Module.runMain (module.js:497:10) at startup (node.js:119:16) at node.js:901:3 ``` There is also the option to use `-r source-map-support/register` with typescript, without the need add the `require('source-map-support').install()` in the code base: ``` $ npm install source-map-support typescript $ node_modules/typescript/bin/tsc -sourcemap demo.ts $ node -r source-map-support/register demo.js demo.ts:5 bar() { throw new Error('this is a demo'); } ^ Error: this is a demo at Foo.bar (demo.ts:5:17) at new Foo (demo.ts:4:24) at Object.<anonymous> (demo.ts:7:1) at Module._compile (module.js:456:26) at Object.Module._extensions..js (module.js:474:10) at Module.load (module.js:356:32) at Function.Module._load (module.js:312:12) at Function.Module.runMain (module.js:497:10) at startup (node.js:119:16) at node.js:901:3 ``` #### CoffeeScript Demo demo.coffee: ```coffee require('source-map-support').install() foo = -> bar = -> throw new Error 'this is a demo' bar() foo() ``` Compile and run the file using the CoffeeScript compiler from the terminal: ```sh $ npm install source-map-support coffeescript $ node_modules/.bin/coffee --map --compile demo.coffee $ node demo.js demo.coffee:3 bar = -> throw new Error 'this is a demo' ^ Error: this is a demo at bar (demo.coffee:3:22) at foo (demo.coffee:4:3) at Object.<anonymous> (demo.coffee:5:1) at Object.<anonymous> (demo.coffee:1:1) at Module._compile (module.js:456:26) at Object.Module._extensions..js (module.js:474:10) at Module.load (module.js:356:32) at Function.Module._load (module.js:312:12) at Function.Module.runMain (module.js:497:10) at startup (node.js:119:16) ``` ## Tests This repo contains both automated tests for node and manual tests for the browser. The automated tests can be run using mocha (type `mocha` in the root directory). To run the manual tests: * Build the tests using `build.js` * Launch the HTTP server (`npm run serve-tests`) and visit * http://127.0.0.1:1336/amd-test * http://127.0.0.1:1336/browser-test * http://127.0.0.1:1336/browserify-test - **Currently not working** due to a bug with browserify (see [pull request #66](https://github.com/evanw/node-source-map-support/pull/66) for details). * For `header-test`, run `server.js` inside that directory and visit http://127.0.0.1:1337/ ## License This code is available under the [MIT license](http://opensource.org/licenses/MIT). Compiler frontend for node.js ============================= Usage ----- For an up to date list of available command line options, see: ``` $> asc --help ``` API --- The API accepts the same options as the CLI but also lets you override stdout and stderr and/or provide a callback. Example: ```js const asc = require("assemblyscript/cli/asc"); asc.ready.then(() => { asc.main([ "myModule.ts", "--binaryFile", "myModule.wasm", "--optimize", "--sourceMap", "--measure" ], { stdout: process.stdout, stderr: process.stderr }, function(err) { if (err) throw err; ... }); }); ``` Available command line options can also be obtained programmatically: ```js const options = require("assemblyscript/cli/asc.json"); ... ``` You can also compile a source string directly, for example in a browser environment: ```js const asc = require("assemblyscript/cli/asc"); asc.ready.then(() => { const { binary, text, stdout, stderr } = asc.compileString(`...`, { optimize: 2 }); }); ... ``` # <img src="docs_app/assets/Rx_Logo_S.png" alt="RxJS Logo" width="86" height="86"> RxJS: Reactive Extensions For JavaScript [](https://circleci.com/gh/ReactiveX/rxjs/tree/6.x) [](http://badge.fury.io/js/%40reactivex%2Frxjs) [](https://gitter.im/Reactive-Extensions/RxJS?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) # RxJS 6 Stable ### MIGRATION AND RELEASE INFORMATION: Find out how to update to v6, **automatically update your TypeScript code**, and more! - [Current home is MIGRATION.md](./docs_app/content/guide/v6/migration.md) ### FOR V 5.X PLEASE GO TO [THE 5.0 BRANCH](https://github.com/ReactiveX/rxjs/tree/5.x) Reactive Extensions Library for JavaScript. This is a rewrite of [Reactive-Extensions/RxJS](https://github.com/Reactive-Extensions/RxJS) and is the latest production-ready version of RxJS. This rewrite is meant to have better performance, better modularity, better debuggable call stacks, while staying mostly backwards compatible, with some breaking changes that reduce the API surface. [Apache 2.0 License](LICENSE.txt) - [Code of Conduct](CODE_OF_CONDUCT.md) - [Contribution Guidelines](CONTRIBUTING.md) - [Maintainer Guidelines](doc_app/content/maintainer-guidelines.md) - [API Documentation](https://rxjs.dev/) ## Versions In This Repository - [master](https://github.com/ReactiveX/rxjs/commits/master) - This is all of the current, unreleased work, which is against v6 of RxJS right now - [stable](https://github.com/ReactiveX/rxjs/commits/stable) - This is the branch for the latest version you'd get if you do `npm install rxjs` ## Important By contributing or commenting on issues in this repository, whether you've read them or not, you're agreeing to the [Contributor Code of Conduct](CODE_OF_CONDUCT.md). Much like traffic laws, ignorance doesn't grant you immunity. ## Installation and Usage ### ES6 via npm ```sh npm install rxjs ``` It's recommended to pull in the Observable creation methods you need directly from `'rxjs'` as shown below with `range`. And you can pull in any operator you need from one spot, under `'rxjs/operators'`. ```ts import { range } from "rxjs"; import { map, filter } from "rxjs/operators"; range(1, 200) .pipe( filter(x => x % 2 === 1), map(x => x + x) ) .subscribe(x => console.log(x)); ``` Here, we're using the built-in `pipe` method on Observables to combine operators. See [pipeable operators](https://github.com/ReactiveX/rxjs/blob/master/doc/pipeable-operators.md) for more information. ### CommonJS via npm To install this library for CommonJS (CJS) usage, use the following command: ```sh npm install rxjs ``` (Note: destructuring available in Node 8+) ```js const { range } = require('rxjs'); const { map, filter } = require('rxjs/operators'); range(1, 200).pipe( filter(x => x % 2 === 1), map(x => x + x) ).subscribe(x => console.log(x)); ``` ### CDN For CDN, you can use [unpkg](https://unpkg.com/): https://unpkg.com/rxjs/bundles/rxjs.umd.min.js The global namespace for rxjs is `rxjs`: ```js const { range } = rxjs; const { map, filter } = rxjs.operators; range(1, 200) .pipe( filter(x => x % 2 === 1), map(x => x + x) ) .subscribe(x => console.log(x)); ``` ## Goals - Smaller overall bundles sizes - Provide better performance than preceding versions of RxJS - To model/follow the [Observable Spec Proposal](https://github.com/zenparsing/es-observable) to the observable - Provide more modular file structure in a variety of formats - Provide more debuggable call stacks than preceding versions of RxJS ## Building/Testing - `npm run build_all` - builds everything - `npm test` - runs tests - `npm run test_no_cache` - run test with `ts-node` set to false ## Performance Tests Run `npm run build_perf` or `npm run perf` to run the performance tests with `protractor`. Run `npm run perf_micro [operator]` to run micro performance test benchmarking operator. ## Adding documentation We appreciate all contributions to the documentation of any type. All of the information needed to get the docs app up and running locally as well as how to contribute can be found in the [documentation directory](./docs_app). ## Generating PNG marble diagrams The script `npm run tests2png` requires some native packages installed locally: `imagemagick`, `graphicsmagick`, and `ghostscript`. For Mac OS X with [Homebrew](http://brew.sh/): - `brew install imagemagick` - `brew install graphicsmagick` - `brew install ghostscript` - You may need to install the Ghostscript fonts manually: - Download the tarball from the [gs-fonts project](https://sourceforge.net/projects/gs-fonts) - `mkdir -p /usr/local/share/ghostscript && tar zxvf /path/to/ghostscript-fonts.tar.gz -C /usr/local/share/ghostscript` For Debian Linux: - `sudo add-apt-repository ppa:dhor/myway` - `apt-get install imagemagick` - `apt-get install graphicsmagick` - `apt-get install ghostscript` For Windows and other Operating Systems, check the download instructions here: - http://imagemagick.org - http://www.graphicsmagick.org - http://www.ghostscript.com/ <p align="center"> <a href="https://assemblyscript.org" target="_blank" rel="noopener"><img width="100" src="https://avatars1.githubusercontent.com/u/28916798?s=200&v=4" alt="AssemblyScript logo"></a> </p> <p align="center"> <a href="https://github.com/AssemblyScript/assemblyscript/actions?query=workflow%3ATest"><img src="https://img.shields.io/github/workflow/status/AssemblyScript/assemblyscript/Test/master?label=test&logo=github" alt="Test status" /></a> <a href="https://github.com/AssemblyScript/assemblyscript/actions?query=workflow%3APublish"><img src="https://img.shields.io/github/workflow/status/AssemblyScript/assemblyscript/Publish/master?label=publish&logo=github" alt="Publish status" /></a> <a href="https://www.npmjs.com/package/assemblyscript"><img src="https://img.shields.io/npm/v/assemblyscript.svg?label=compiler&color=007acc&logo=npm" alt="npm compiler version" /></a> <a href="https://www.npmjs.com/package/@assemblyscript/loader"><img src="https://img.shields.io/npm/v/@assemblyscript/loader.svg?label=loader&color=007acc&logo=npm" alt="npm loader version" /></a> <a href="https://discord.gg/assemblyscript"><img src="https://img.shields.io/discord/721472913886281818.svg?label=&logo=discord&logoColor=ffffff&color=7389D8&labelColor=6A7EC2" alt="Discord online" /></a> </p> <p align="justify"><strong>AssemblyScript</strong> compiles a strict variant of <a href="http://www.typescriptlang.org">TypeScript</a> (basically JavaScript with types) to <a href="http://webassembly.org">WebAssembly</a> using <a href="https://github.com/WebAssembly/binaryen">Binaryen</a>. It generates lean and mean WebAssembly modules while being just an <code>npm install</code> away.</p> <h3 align="center"> <a href="https://assemblyscript.org">About</a> &nbsp;·&nbsp; <a href="https://assemblyscript.org/introduction.html">Introduction</a> &nbsp;·&nbsp; <a href="https://assemblyscript.org/quick-start.html">Quick&nbsp;start</a> &nbsp;·&nbsp; <a href="https://assemblyscript.org/examples.html">Examples</a> &nbsp;·&nbsp; <a href="https://assemblyscript.org/development.html">Development&nbsp;instructions</a> </h3> <br> <h2 align="center">Contributors</h2> <p align="center"> <a href="https://assemblyscript.org/#contributors"><img src="https://assemblyscript.org/contributors.svg" alt="Contributor logos" width="720" /></a> </p> <h2 align="center">Thanks to our sponsors!</h2> <p align="justify">Most of the core team members and most contributors do this open source work in their free time. If you use AssemblyScript for a serious task or plan to do so, and you'd like us to invest more time on it, <a href="https://opencollective.com/assemblyscript/donate" target="_blank" rel="noopener">please donate</a> to our <a href="https://opencollective.com/assemblyscript" target="_blank" rel="noopener">OpenCollective</a>. By sponsoring this project, your logo will show up below. Thank you so much for your support!</p> <p align="center"> <a href="https://assemblyscript.org/#sponsors"><img src="https://assemblyscript.org/sponsors.svg" alt="Sponsor logos" width="720" /></a> </p> <img align="right" alt="Ajv logo" width="160" src="https://ajv.js.org/images/ajv_logo.png"> # Ajv: Another JSON Schema Validator The fastest JSON Schema validator for Node.js and browser. Supports draft-04/06/07. [](https://travis-ci.org/ajv-validator/ajv) [](https://www.npmjs.com/package/ajv) [](https://www.npmjs.com/package/ajv/v/7.0.0-beta.0) [](https://www.npmjs.com/package/ajv) [](https://coveralls.io/github/ajv-validator/ajv?branch=master) [](https://gitter.im/ajv-validator/ajv) [](https://github.com/sponsors/epoberezkin) ## Ajv v7 beta is released [Ajv version 7.0.0-beta.0](https://github.com/ajv-validator/ajv/tree/v7-beta) is released with these changes: - to reduce the mistakes in JSON schemas and unexpected validation results, [strict mode](./docs/strict-mode.md) is added - it prohibits ignored or ambiguous JSON Schema elements. - to make code injection from untrusted schemas impossible, [code generation](./docs/codegen.md) is fully re-written to be safe. - to simplify Ajv extensions, the new keyword API that is used by pre-defined keywords is available to user-defined keywords - it is much easier to define any keywords now, especially with subschemas. - schemas are compiled to ES6 code (ES5 code generation is supported with an option). - to improve reliability and maintainability the code is migrated to TypeScript. **Please note**: - the support for JSON-Schema draft-04 is removed - if you have schemas using "id" attributes you have to replace them with "\$id" (or continue using version 6 that will be supported until 02/28/2021). - all formats are separated to ajv-formats package - they have to be explicitely added if you use them. See [release notes](https://github.com/ajv-validator/ajv/releases/tag/v7.0.0-beta.0) for the details. To install the new version: ```bash npm install ajv@beta ``` See [Getting started with v7](https://github.com/ajv-validator/ajv/tree/v7-beta#usage) for code example. ## Mozilla MOSS grant and OpenJS Foundation [<img src="https://www.poberezkin.com/images/mozilla.png" width="240" height="68">](https://www.mozilla.org/en-US/moss/) &nbsp;&nbsp;&nbsp; [<img src="https://www.poberezkin.com/images/openjs.png" width="220" height="68">](https://openjsf.org/blog/2020/08/14/ajv-joins-openjs-foundation-as-an-incubation-project/) Ajv has been awarded a grant from Mozilla’s [Open Source Support (MOSS) program](https://www.mozilla.org/en-US/moss/) in the “Foundational Technology” track! It will sponsor the development of Ajv support of [JSON Schema version 2019-09](https://tools.ietf.org/html/draft-handrews-json-schema-02) and of [JSON Type Definition](https://tools.ietf.org/html/draft-ucarion-json-type-definition-04). Ajv also joined [OpenJS Foundation](https://openjsf.org/) – having this support will help ensure the longevity and stability of Ajv for all its users. This [blog post](https://www.poberezkin.com/posts/2020-08-14-ajv-json-validator-mozilla-open-source-grant-openjs-foundation.html) has more details. I am looking for the long term maintainers of Ajv – working with [ReadySet](https://www.thereadyset.co/), also sponsored by Mozilla, to establish clear guidelines for the role of a "maintainer" and the contribution standards, and to encourage a wider, more inclusive, contribution from the community. ## Please [sponsor Ajv development](https://github.com/sponsors/epoberezkin) Since I asked to support Ajv development 40 people and 6 organizations contributed via GitHub and OpenCollective - this support helped receiving the MOSS grant! Your continuing support is very important - the funds will be used to develop and maintain Ajv once the next major version is released. Please sponsor Ajv via: - [GitHub sponsors page](https://github.com/sponsors/epoberezkin) (GitHub will match it) - [Ajv Open Collective️](https://opencollective.com/ajv) Thank you. #### Open Collective sponsors <a href="https://opencollective.com/ajv"><img src="https://opencollective.com/ajv/individuals.svg?width=890"></a> <a href="https://opencollective.com/ajv/organization/0/website"><img src="https://opencollective.com/ajv/organization/0/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/1/website"><img src="https://opencollective.com/ajv/organization/1/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/2/website"><img src="https://opencollective.com/ajv/organization/2/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/3/website"><img src="https://opencollective.com/ajv/organization/3/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/4/website"><img src="https://opencollective.com/ajv/organization/4/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/5/website"><img src="https://opencollective.com/ajv/organization/5/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/6/website"><img src="https://opencollective.com/ajv/organization/6/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/7/website"><img src="https://opencollective.com/ajv/organization/7/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/8/website"><img src="https://opencollective.com/ajv/organization/8/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/9/website"><img src="https://opencollective.com/ajv/organization/9/avatar.svg"></a> ## Using version 6 [JSON Schema draft-07](http://json-schema.org/latest/json-schema-validation.html) is published. [Ajv version 6.0.0](https://github.com/ajv-validator/ajv/releases/tag/v6.0.0) that supports draft-07 is released. It may require either migrating your schemas or updating your code (to continue using draft-04 and v5 schemas, draft-06 schemas will be supported without changes). __Please note__: To use Ajv with draft-06 schemas you need to explicitly add the meta-schema to the validator instance: ```javascript ajv.addMetaSchema(require('ajv/lib/refs/json-schema-draft-06.json')); ``` To use Ajv with draft-04 schemas in addition to explicitly adding meta-schema you also need to use option schemaId: ```javascript var ajv = new Ajv({schemaId: 'id'}); // If you want to use both draft-04 and draft-06/07 schemas: // var ajv = new Ajv({schemaId: 'auto'}); ajv.addMetaSchema(require('ajv/lib/refs/json-schema-draft-04.json')); ``` ## Contents - [Performance](#performance) - [Features](#features) - [Getting started](#getting-started) - [Frequently Asked Questions](https://github.com/ajv-validator/ajv/blob/master/FAQ.md) - [Using in browser](#using-in-browser) - [Ajv and Content Security Policies (CSP)](#ajv-and-content-security-policies-csp) - [Command line interface](#command-line-interface) - Validation - [Keywords](#validation-keywords) - [Annotation keywords](#annotation-keywords) - [Formats](#formats) - [Combining schemas with $ref](#ref) - [$data reference](#data-reference) - NEW: [$merge and $patch keywords](#merge-and-patch-keywords) - [Defining custom keywords](#defining-custom-keywords) - [Asynchronous schema compilation](#asynchronous-schema-compilation) - [Asynchronous validation](#asynchronous-validation) - [Security considerations](#security-considerations) - [Security contact](#security-contact) - [Untrusted schemas](#untrusted-schemas) - [Circular references in objects](#circular-references-in-javascript-objects) - [Trusted schemas](#security-risks-of-trusted-schemas) - [ReDoS attack](#redos-attack) - Modifying data during validation - [Filtering data](#filtering-data) - [Assigning defaults](#assigning-defaults) - [Coercing data types](#coercing-data-types) - API - [Methods](#api) - [Options](#options) - [Validation errors](#validation-errors) - [Plugins](#plugins) - [Related packages](#related-packages) - [Some packages using Ajv](#some-packages-using-ajv) - [Tests, Contributing, Changes history](#tests) - [Support, Code of conduct, License](#open-source-software-support) ## Performance Ajv generates code using [doT templates](https://github.com/olado/doT) to turn JSON Schemas into super-fast validation functions that are efficient for v8 optimization. Currently Ajv is the fastest and the most standard compliant validator according to these benchmarks: - [json-schema-benchmark](https://github.com/ebdrup/json-schema-benchmark) - 50% faster than the second place - [jsck benchmark](https://github.com/pandastrike/jsck#benchmarks) - 20-190% faster - [z-schema benchmark](https://rawgit.com/zaggino/z-schema/master/benchmark/results.html) - [themis benchmark](https://cdn.rawgit.com/playlyfe/themis/master/benchmark/results.html) Performance of different validators by [json-schema-benchmark](https://github.com/ebdrup/json-schema-benchmark): [](https://github.com/ebdrup/json-schema-benchmark/blob/master/README.md#performance) ## Features - Ajv implements full JSON Schema [draft-06/07](http://json-schema.org/) and draft-04 standards: - all validation keywords (see [JSON Schema validation keywords](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md)) - full support of remote refs (remote schemas have to be added with `addSchema` or compiled to be available) - support of circular references between schemas - correct string lengths for strings with unicode pairs (can be turned off) - [formats](#formats) defined by JSON Schema draft-07 standard and custom formats (can be turned off) - [validates schemas against meta-schema](#api-validateschema) - supports [browsers](#using-in-browser) and Node.js 0.10-14.x - [asynchronous loading](#asynchronous-schema-compilation) of referenced schemas during compilation - "All errors" validation mode with [option allErrors](#options) - [error messages with parameters](#validation-errors) describing error reasons to allow creating custom error messages - i18n error messages support with [ajv-i18n](https://github.com/ajv-validator/ajv-i18n) package - [filtering data](#filtering-data) from additional properties - [assigning defaults](#assigning-defaults) to missing properties and items - [coercing data](#coercing-data-types) to the types specified in `type` keywords - [custom keywords](#defining-custom-keywords) - draft-06/07 keywords `const`, `contains`, `propertyNames` and `if/then/else` - draft-06 boolean schemas (`true`/`false` as a schema to always pass/fail). - keywords `switch`, `patternRequired`, `formatMaximum` / `formatMinimum` and `formatExclusiveMaximum` / `formatExclusiveMinimum` from [JSON Schema extension proposals](https://github.com/json-schema/json-schema/wiki/v5-Proposals) with [ajv-keywords](https://github.com/ajv-validator/ajv-keywords) package - [$data reference](#data-reference) to use values from the validated data as values for the schema keywords - [asynchronous validation](#asynchronous-validation) of custom formats and keywords ## Install ``` npm install ajv ``` ## <a name="usage"></a>Getting started Try it in the Node.js REPL: https://tonicdev.com/npm/ajv The fastest validation call: ```javascript // Node.js require: var Ajv = require('ajv'); // or ESM/TypeScript import import Ajv from 'ajv'; var ajv = new Ajv(); // options can be passed, e.g. {allErrors: true} var validate = ajv.compile(schema); var valid = validate(data); if (!valid) console.log(validate.errors); ``` or with less code ```javascript // ... var valid = ajv.validate(schema, data); if (!valid) console.log(ajv.errors); // ... ``` or ```javascript // ... var valid = ajv.addSchema(schema, 'mySchema') .validate('mySchema', data); if (!valid) console.log(ajv.errorsText()); // ... ``` See [API](#api) and [Options](#options) for more details. Ajv compiles schemas to functions and caches them in all cases (using schema serialized with [fast-json-stable-stringify](https://github.com/epoberezkin/fast-json-stable-stringify) or a custom function as a key), so that the next time the same schema is used (not necessarily the same object instance) it won't be compiled again. The best performance is achieved when using compiled functions returned by `compile` or `getSchema` methods (there is no additional function call). __Please note__: every time a validation function or `ajv.validate` are called `errors` property is overwritten. You need to copy `errors` array reference to another variable if you want to use it later (e.g., in the callback). See [Validation errors](#validation-errors) __Note for TypeScript users__: `ajv` provides its own TypeScript declarations out of the box, so you don't need to install the deprecated `@types/ajv` module. ## Using in browser You can require Ajv directly from the code you browserify - in this case Ajv will be a part of your bundle. If you need to use Ajv in several bundles you can create a separate UMD bundle using `npm run bundle` script (thanks to [siddo420](https://github.com/siddo420)). Then you need to load Ajv in the browser: ```html <script src="ajv.min.js"></script> ``` This bundle can be used with different module systems; it creates global `Ajv` if no module system is found. The browser bundle is available on [cdnjs](https://cdnjs.com/libraries/ajv). Ajv is tested with these browsers: [](https://saucelabs.com/u/epoberezkin) __Please note__: some frameworks, e.g. Dojo, may redefine global require in such way that is not compatible with CommonJS module format. In such case Ajv bundle has to be loaded before the framework and then you can use global Ajv (see issue [#234](https://github.com/ajv-validator/ajv/issues/234)). ### Ajv and Content Security Policies (CSP) If you're using Ajv to compile a schema (the typical use) in a browser document that is loaded with a Content Security Policy (CSP), that policy will require a `script-src` directive that includes the value `'unsafe-eval'`. :warning: NOTE, however, that `unsafe-eval` is NOT recommended in a secure CSP[[1]](https://developer.chrome.com/extensions/contentSecurityPolicy#relaxing-eval), as it has the potential to open the document to cross-site scripting (XSS) attacks. In order to make use of Ajv without easing your CSP, you can [pre-compile a schema using the CLI](https://github.com/ajv-validator/ajv-cli#compile-schemas). This will transpile the schema JSON into a JavaScript file that exports a `validate` function that works simlarly to a schema compiled at runtime. Note that pre-compilation of schemas is performed using [ajv-pack](https://github.com/ajv-validator/ajv-pack) and there are [some limitations to the schema features it can compile](https://github.com/ajv-validator/ajv-pack#limitations). A successfully pre-compiled schema is equivalent to the same schema compiled at runtime. ## Command line interface CLI is available as a separate npm package [ajv-cli](https://github.com/ajv-validator/ajv-cli). It supports: - compiling JSON Schemas to test their validity - BETA: generating standalone module exporting a validation function to be used without Ajv (using [ajv-pack](https://github.com/ajv-validator/ajv-pack)) - migrate schemas to draft-07 (using [json-schema-migrate](https://github.com/epoberezkin/json-schema-migrate)) - validating data file(s) against JSON Schema - testing expected validity of data against JSON Schema - referenced schemas - custom meta-schemas - files in JSON, JSON5, YAML, and JavaScript format - all Ajv options - reporting changes in data after validation in [JSON-patch](https://tools.ietf.org/html/rfc6902) format ## Validation keywords Ajv supports all validation keywords from draft-07 of JSON Schema standard: - [type](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#type) - [for numbers](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#keywords-for-numbers) - maximum, minimum, exclusiveMaximum, exclusiveMinimum, multipleOf - [for strings](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#keywords-for-strings) - maxLength, minLength, pattern, format - [for arrays](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#keywords-for-arrays) - maxItems, minItems, uniqueItems, items, additionalItems, [contains](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#contains) - [for objects](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#keywords-for-objects) - maxProperties, minProperties, required, properties, patternProperties, additionalProperties, dependencies, [propertyNames](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#propertynames) - [for all types](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#keywords-for-all-types) - enum, [const](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#const) - [compound keywords](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#compound-keywords) - not, oneOf, anyOf, allOf, [if/then/else](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#ifthenelse) With [ajv-keywords](https://github.com/ajv-validator/ajv-keywords) package Ajv also supports validation keywords from [JSON Schema extension proposals](https://github.com/json-schema/json-schema/wiki/v5-Proposals) for JSON Schema standard: - [patternRequired](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#patternrequired-proposed) - like `required` but with patterns that some property should match. - [formatMaximum, formatMinimum, formatExclusiveMaximum, formatExclusiveMinimum](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#formatmaximum--formatminimum-and-exclusiveformatmaximum--exclusiveformatminimum-proposed) - setting limits for date, time, etc. See [JSON Schema validation keywords](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md) for more details. ## Annotation keywords JSON Schema specification defines several annotation keywords that describe schema itself but do not perform any validation. - `title` and `description`: information about the data represented by that schema - `$comment` (NEW in draft-07): information for developers. With option `$comment` Ajv logs or passes the comment string to the user-supplied function. See [Options](#options). - `default`: a default value of the data instance, see [Assigning defaults](#assigning-defaults). - `examples` (NEW in draft-06): an array of data instances. Ajv does not check the validity of these instances against the schema. - `readOnly` and `writeOnly` (NEW in draft-07): marks data-instance as read-only or write-only in relation to the source of the data (database, api, etc.). - `contentEncoding`: [RFC 2045](https://tools.ietf.org/html/rfc2045#section-6.1 ), e.g., "base64". - `contentMediaType`: [RFC 2046](https://tools.ietf.org/html/rfc2046), e.g., "image/png". __Please note__: Ajv does not implement validation of the keywords `examples`, `contentEncoding` and `contentMediaType` but it reserves them. If you want to create a plugin that implements some of them, it should remove these keywords from the instance. ## Formats Ajv implements formats defined by JSON Schema specification and several other formats. It is recommended NOT to use "format" keyword implementations with untrusted data, as they use potentially unsafe regular expressions - see [ReDoS attack](#redos-attack). __Please note__: if you need to use "format" keyword to validate untrusted data, you MUST assess their suitability and safety for your validation scenarios. The following formats are implemented for string validation with "format" keyword: - _date_: full-date according to [RFC3339](http://tools.ietf.org/html/rfc3339#section-5.6). - _time_: time with optional time-zone. - _date-time_: date-time from the same source (time-zone is mandatory). `date`, `time` and `date-time` validate ranges in `full` mode and only regexp in `fast` mode (see [options](#options)). - _uri_: full URI. - _uri-reference_: URI reference, including full and relative URIs. - _uri-template_: URI template according to [RFC6570](https://tools.ietf.org/html/rfc6570) - _url_ (deprecated): [URL record](https://url.spec.whatwg.org/#concept-url). - _email_: email address. - _hostname_: host name according to [RFC1034](http://tools.ietf.org/html/rfc1034#section-3.5). - _ipv4_: IP address v4. - _ipv6_: IP address v6. - _regex_: tests whether a string is a valid regular expression by passing it to RegExp constructor. - _uuid_: Universally Unique IDentifier according to [RFC4122](http://tools.ietf.org/html/rfc4122). - _json-pointer_: JSON-pointer according to [RFC6901](https://tools.ietf.org/html/rfc6901). - _relative-json-pointer_: relative JSON-pointer according to [this draft](http://tools.ietf.org/html/draft-luff-relative-json-pointer-00). __Please note__: JSON Schema draft-07 also defines formats `iri`, `iri-reference`, `idn-hostname` and `idn-email` for URLs, hostnames and emails with international characters. Ajv does not implement these formats. If you create Ajv plugin that implements them please make a PR to mention this plugin here. There are two modes of format validation: `fast` and `full`. This mode affects formats `date`, `time`, `date-time`, `uri`, `uri-reference`, and `email`. See [Options](#options) for details. You can add additional formats and replace any of the formats above using [addFormat](#api-addformat) method. The option `unknownFormats` allows changing the default behaviour when an unknown format is encountered. In this case Ajv can either fail schema compilation (default) or ignore it (default in versions before 5.0.0). You also can allow specific format(s) that will be ignored. See [Options](#options) for details. You can find regular expressions used for format validation and the sources that were used in [formats.js](https://github.com/ajv-validator/ajv/blob/master/lib/compile/formats.js). ## <a name="ref"></a>Combining schemas with $ref You can structure your validation logic across multiple schema files and have schemas reference each other using `$ref` keyword. Example: ```javascript var schema = { "$id": "http://example.com/schemas/schema.json", "type": "object", "properties": { "foo": { "$ref": "defs.json#/definitions/int" }, "bar": { "$ref": "defs.json#/definitions/str" } } }; var defsSchema = { "$id": "http://example.com/schemas/defs.json", "definitions": { "int": { "type": "integer" }, "str": { "type": "string" } } }; ``` Now to compile your schema you can either pass all schemas to Ajv instance: ```javascript var ajv = new Ajv({schemas: [schema, defsSchema]}); var validate = ajv.getSchema('http://example.com/schemas/schema.json'); ``` or use `addSchema` method: ```javascript var ajv = new Ajv; var validate = ajv.addSchema(defsSchema) .compile(schema); ``` See [Options](#options) and [addSchema](#api) method. __Please note__: - `$ref` is resolved as the uri-reference using schema $id as the base URI (see the example). - References can be recursive (and mutually recursive) to implement the schemas for different data structures (such as linked lists, trees, graphs, etc.). - You don't have to host your schema files at the URIs that you use as schema $id. These URIs are only used to identify the schemas, and according to JSON Schema specification validators should not expect to be able to download the schemas from these URIs. - The actual location of the schema file in the file system is not used. - You can pass the identifier of the schema as the second parameter of `addSchema` method or as a property name in `schemas` option. This identifier can be used instead of (or in addition to) schema $id. - You cannot have the same $id (or the schema identifier) used for more than one schema - the exception will be thrown. - You can implement dynamic resolution of the referenced schemas using `compileAsync` method. In this way you can store schemas in any system (files, web, database, etc.) and reference them without explicitly adding to Ajv instance. See [Asynchronous schema compilation](#asynchronous-schema-compilation). ## $data reference With `$data` option you can use values from the validated data as the values for the schema keywords. See [proposal](https://github.com/json-schema-org/json-schema-spec/issues/51) for more information about how it works. `$data` reference is supported in the keywords: const, enum, format, maximum/minimum, exclusiveMaximum / exclusiveMinimum, maxLength / minLength, maxItems / minItems, maxProperties / minProperties, formatMaximum / formatMinimum, formatExclusiveMaximum / formatExclusiveMinimum, multipleOf, pattern, required, uniqueItems. The value of "$data" should be a [JSON-pointer](https://tools.ietf.org/html/rfc6901) to the data (the root is always the top level data object, even if the $data reference is inside a referenced subschema) or a [relative JSON-pointer](http://tools.ietf.org/html/draft-luff-relative-json-pointer-00) (it is relative to the current point in data; if the $data reference is inside a referenced subschema it cannot point to the data outside of the root level for this subschema). Examples. This schema requires that the value in property `smaller` is less or equal than the value in the property larger: ```javascript var ajv = new Ajv({$data: true}); var schema = { "properties": { "smaller": { "type": "number", "maximum": { "$data": "1/larger" } }, "larger": { "type": "number" } } }; var validData = { smaller: 5, larger: 7 }; ajv.validate(schema, validData); // true ``` This schema requires that the properties have the same format as their field names: ```javascript var schema = { "additionalProperties": { "type": "string", "format": { "$data": "0#" } } }; var validData = { 'date-time': '1963-06-19T08:30:06.283185Z', email: 'joe.bloggs@example.com' } ``` `$data` reference is resolved safely - it won't throw even if some property is undefined. If `$data` resolves to `undefined` the validation succeeds (with the exclusion of `const` keyword). If `$data` resolves to incorrect type (e.g. not "number" for maximum keyword) the validation fails. ## $merge and $patch keywords With the package [ajv-merge-patch](https://github.com/ajv-validator/ajv-merge-patch) you can use the keywords `$merge` and `$patch` that allow extending JSON Schemas with patches using formats [JSON Merge Patch (RFC 7396)](https://tools.ietf.org/html/rfc7396) and [JSON Patch (RFC 6902)](https://tools.ietf.org/html/rfc6902). To add keywords `$merge` and `$patch` to Ajv instance use this code: ```javascript require('ajv-merge-patch')(ajv); ``` Examples. Using `$merge`: ```json { "$merge": { "source": { "type": "object", "properties": { "p": { "type": "string" } }, "additionalProperties": false }, "with": { "properties": { "q": { "type": "number" } } } } } ``` Using `$patch`: ```json { "$patch": { "source": { "type": "object", "properties": { "p": { "type": "string" } }, "additionalProperties": false }, "with": [ { "op": "add", "path": "/properties/q", "value": { "type": "number" } } ] } } ``` The schemas above are equivalent to this schema: ```json { "type": "object", "properties": { "p": { "type": "string" }, "q": { "type": "number" } }, "additionalProperties": false } ``` The properties `source` and `with` in the keywords `$merge` and `$patch` can use absolute or relative `$ref` to point to other schemas previously added to the Ajv instance or to the fragments of the current schema. See the package [ajv-merge-patch](https://github.com/ajv-validator/ajv-merge-patch) for more information. ## Defining custom keywords The advantages of using custom keywords are: - allow creating validation scenarios that cannot be expressed using JSON Schema - simplify your schemas - help bringing a bigger part of the validation logic to your schemas - make your schemas more expressive, less verbose and closer to your application domain - implement custom data processors that modify your data (`modifying` option MUST be used in keyword definition) and/or create side effects while the data is being validated If a keyword is used only for side-effects and its validation result is pre-defined, use option `valid: true/false` in keyword definition to simplify both generated code (no error handling in case of `valid: true`) and your keyword functions (no need to return any validation result). The concerns you have to be aware of when extending JSON Schema standard with custom keywords are the portability and understanding of your schemas. You will have to support these custom keywords on other platforms and to properly document these keywords so that everybody can understand them in your schemas. You can define custom keywords with [addKeyword](#api-addkeyword) method. Keywords are defined on the `ajv` instance level - new instances will not have previously defined keywords. Ajv allows defining keywords with: - validation function - compilation function - macro function - inline compilation function that should return code (as string) that will be inlined in the currently compiled schema. Example. `range` and `exclusiveRange` keywords using compiled schema: ```javascript ajv.addKeyword('range', { type: 'number', compile: function (sch, parentSchema) { var min = sch[0]; var max = sch[1]; return parentSchema.exclusiveRange === true ? function (data) { return data > min && data < max; } : function (data) { return data >= min && data <= max; } } }); var schema = { "range": [2, 4], "exclusiveRange": true }; var validate = ajv.compile(schema); console.log(validate(2.01)); // true console.log(validate(3.99)); // true console.log(validate(2)); // false console.log(validate(4)); // false ``` Several custom keywords (typeof, instanceof, range and propertyNames) are defined in [ajv-keywords](https://github.com/ajv-validator/ajv-keywords) package - they can be used for your schemas and as a starting point for your own custom keywords. See [Defining custom keywords](https://github.com/ajv-validator/ajv/blob/master/CUSTOM.md) for more details. ## Asynchronous schema compilation During asynchronous compilation remote references are loaded using supplied function. See `compileAsync` [method](#api-compileAsync) and `loadSchema` [option](#options). Example: ```javascript var ajv = new Ajv({ loadSchema: loadSchema }); ajv.compileAsync(schema).then(function (validate) { var valid = validate(data); // ... }); function loadSchema(uri) { return request.json(uri).then(function (res) { if (res.statusCode >= 400) throw new Error('Loading error: ' + res.statusCode); return res.body; }); } ``` __Please note__: [Option](#options) `missingRefs` should NOT be set to `"ignore"` or `"fail"` for asynchronous compilation to work. ## Asynchronous validation Example in Node.js REPL: https://tonicdev.com/esp/ajv-asynchronous-validation You can define custom formats and keywords that perform validation asynchronously by accessing database or some other service. You should add `async: true` in the keyword or format definition (see [addFormat](#api-addformat), [addKeyword](#api-addkeyword) and [Defining custom keywords](#defining-custom-keywords)). If your schema uses asynchronous formats/keywords or refers to some schema that contains them it should have `"$async": true` keyword so that Ajv can compile it correctly. If asynchronous format/keyword or reference to asynchronous schema is used in the schema without `$async` keyword Ajv will throw an exception during schema compilation. __Please note__: all asynchronous subschemas that are referenced from the current or other schemas should have `"$async": true` keyword as well, otherwise the schema compilation will fail. Validation function for an asynchronous custom format/keyword should return a promise that resolves with `true` or `false` (or rejects with `new Ajv.ValidationError(errors)` if you want to return custom errors from the keyword function). Ajv compiles asynchronous schemas to [es7 async functions](http://tc39.github.io/ecmascript-asyncawait/) that can optionally be transpiled with [nodent](https://github.com/MatAtBread/nodent). Async functions are supported in Node.js 7+ and all modern browsers. You can also supply any other transpiler as a function via `processCode` option. See [Options](#options). The compiled validation function has `$async: true` property (if the schema is asynchronous), so you can differentiate these functions if you are using both synchronous and asynchronous schemas. Validation result will be a promise that resolves with validated data or rejects with an exception `Ajv.ValidationError` that contains the array of validation errors in `errors` property. Example: ```javascript var ajv = new Ajv; // require('ajv-async')(ajv); ajv.addKeyword('idExists', { async: true, type: 'number', validate: checkIdExists }); function checkIdExists(schema, data) { return knex(schema.table) .select('id') .where('id', data) .then(function (rows) { return !!rows.length; // true if record is found }); } var schema = { "$async": true, "properties": { "userId": { "type": "integer", "idExists": { "table": "users" } }, "postId": { "type": "integer", "idExists": { "table": "posts" } } } }; var validate = ajv.compile(schema); validate({ userId: 1, postId: 19 }) .then(function (data) { console.log('Data is valid', data); // { userId: 1, postId: 19 } }) .catch(function (err) { if (!(err instanceof Ajv.ValidationError)) throw err; // data is invalid console.log('Validation errors:', err.errors); }); ``` ### Using transpilers with asynchronous validation functions. [ajv-async](https://github.com/ajv-validator/ajv-async) uses [nodent](https://github.com/MatAtBread/nodent) to transpile async functions. To use another transpiler you should separately install it (or load its bundle in the browser). #### Using nodent ```javascript var ajv = new Ajv; require('ajv-async')(ajv); // in the browser if you want to load ajv-async bundle separately you can: // window.ajvAsync(ajv); var validate = ajv.compile(schema); // transpiled es7 async function validate(data).then(successFunc).catch(errorFunc); ``` #### Using other transpilers ```javascript var ajv = new Ajv({ processCode: transpileFunc }); var validate = ajv.compile(schema); // transpiled es7 async function validate(data).then(successFunc).catch(errorFunc); ``` See [Options](#options). ## Security considerations JSON Schema, if properly used, can replace data sanitisation. It doesn't replace other API security considerations. It also introduces additional security aspects to consider. ##### Security contact To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. Please do NOT report security vulnerabilities via GitHub issues. ##### Untrusted schemas Ajv treats JSON schemas as trusted as your application code. This security model is based on the most common use case, when the schemas are static and bundled together with the application. If your schemas are received from untrusted sources (or generated from untrusted data) there are several scenarios you need to prevent: - compiling schemas can cause stack overflow (if they are too deep) - compiling schemas can be slow (e.g. [#557](https://github.com/ajv-validator/ajv/issues/557)) - validating certain data can be slow It is difficult to predict all the scenarios, but at the very least it may help to limit the size of untrusted schemas (e.g. limit JSON string length) and also the maximum schema object depth (that can be high for relatively small JSON strings). You also may want to mitigate slow regular expressions in `pattern` and `patternProperties` keywords. Regardless the measures you take, using untrusted schemas increases security risks. ##### Circular references in JavaScript objects Ajv does not support schemas and validated data that have circular references in objects. See [issue #802](https://github.com/ajv-validator/ajv/issues/802). An attempt to compile such schemas or validate such data would cause stack overflow (or will not complete in case of asynchronous validation). Depending on the parser you use, untrusted data can lead to circular references. ##### Security risks of trusted schemas Some keywords in JSON Schemas can lead to very slow validation for certain data. These keywords include (but may be not limited to): - `pattern` and `format` for large strings - in some cases using `maxLength` can help mitigate it, but certain regular expressions can lead to exponential validation time even with relatively short strings (see [ReDoS attack](#redos-attack)). - `patternProperties` for large property names - use `propertyNames` to mitigate, but some regular expressions can have exponential evaluation time as well. - `uniqueItems` for large non-scalar arrays - use `maxItems` to mitigate __Please note__: The suggestions above to prevent slow validation would only work if you do NOT use `allErrors: true` in production code (using it would continue validation after validation errors). You can validate your JSON schemas against [this meta-schema](https://github.com/ajv-validator/ajv/blob/master/lib/refs/json-schema-secure.json) to check that these recommendations are followed: ```javascript const isSchemaSecure = ajv.compile(require('ajv/lib/refs/json-schema-secure.json')); const schema1 = {format: 'email'}; isSchemaSecure(schema1); // false const schema2 = {format: 'email', maxLength: MAX_LENGTH}; isSchemaSecure(schema2); // true ``` __Please note__: following all these recommendation is not a guarantee that validation of untrusted data is safe - it can still lead to some undesirable results. ##### Content Security Policies (CSP) See [Ajv and Content Security Policies (CSP)](#ajv-and-content-security-policies-csp) ## ReDoS attack Certain regular expressions can lead to the exponential evaluation time even with relatively short strings. Please assess the regular expressions you use in the schemas on their vulnerability to this attack - see [safe-regex](https://github.com/substack/safe-regex), for example. __Please note__: some formats that Ajv implements use [regular expressions](https://github.com/ajv-validator/ajv/blob/master/lib/compile/formats.js) that can be vulnerable to ReDoS attack, so if you use Ajv to validate data from untrusted sources __it is strongly recommended__ to consider the following: - making assessment of "format" implementations in Ajv. - using `format: 'fast'` option that simplifies some of the regular expressions (although it does not guarantee that they are safe). - replacing format implementations provided by Ajv with your own implementations of "format" keyword that either uses different regular expressions or another approach to format validation. Please see [addFormat](#api-addformat) method. - disabling format validation by ignoring "format" keyword with option `format: false` Whatever mitigation you choose, please assume all formats provided by Ajv as potentially unsafe and make your own assessment of their suitability for your validation scenarios. ## Filtering data With [option `removeAdditional`](#options) (added by [andyscott](https://github.com/andyscott)) you can filter data during the validation. This option modifies original data. Example: ```javascript var ajv = new Ajv({ removeAdditional: true }); var schema = { "additionalProperties": false, "properties": { "foo": { "type": "number" }, "bar": { "additionalProperties": { "type": "number" }, "properties": { "baz": { "type": "string" } } } } } var data = { "foo": 0, "additional1": 1, // will be removed; `additionalProperties` == false "bar": { "baz": "abc", "additional2": 2 // will NOT be removed; `additionalProperties` != false }, } var validate = ajv.compile(schema); console.log(validate(data)); // true console.log(data); // { "foo": 0, "bar": { "baz": "abc", "additional2": 2 } ``` If `removeAdditional` option in the example above were `"all"` then both `additional1` and `additional2` properties would have been removed. If the option were `"failing"` then property `additional1` would have been removed regardless of its value and property `additional2` would have been removed only if its value were failing the schema in the inner `additionalProperties` (so in the example above it would have stayed because it passes the schema, but any non-number would have been removed). __Please note__: If you use `removeAdditional` option with `additionalProperties` keyword inside `anyOf`/`oneOf` keywords your validation can fail with this schema, for example: ```json { "type": "object", "oneOf": [ { "properties": { "foo": { "type": "string" } }, "required": [ "foo" ], "additionalProperties": false }, { "properties": { "bar": { "type": "integer" } }, "required": [ "bar" ], "additionalProperties": false } ] } ``` The intention of the schema above is to allow objects with either the string property "foo" or the integer property "bar", but not with both and not with any other properties. With the option `removeAdditional: true` the validation will pass for the object `{ "foo": "abc"}` but will fail for the object `{"bar": 1}`. It happens because while the first subschema in `oneOf` is validated, the property `bar` is removed because it is an additional property according to the standard (because it is not included in `properties` keyword in the same schema). While this behaviour is unexpected (issues [#129](https://github.com/ajv-validator/ajv/issues/129), [#134](https://github.com/ajv-validator/ajv/issues/134)), it is correct. To have the expected behaviour (both objects are allowed and additional properties are removed) the schema has to be refactored in this way: ```json { "type": "object", "properties": { "foo": { "type": "string" }, "bar": { "type": "integer" } }, "additionalProperties": false, "oneOf": [ { "required": [ "foo" ] }, { "required": [ "bar" ] } ] } ``` The schema above is also more efficient - it will compile into a faster function. ## Assigning defaults With [option `useDefaults`](#options) Ajv will assign values from `default` keyword in the schemas of `properties` and `items` (when it is the array of schemas) to the missing properties and items. With the option value `"empty"` properties and items equal to `null` or `""` (empty string) will be considered missing and assigned defaults. This option modifies original data. __Please note__: the default value is inserted in the generated validation code as a literal, so the value inserted in the data will be the deep clone of the default in the schema. Example 1 (`default` in `properties`): ```javascript var ajv = new Ajv({ useDefaults: true }); var schema = { "type": "object", "properties": { "foo": { "type": "number" }, "bar": { "type": "string", "default": "baz" } }, "required": [ "foo", "bar" ] }; var data = { "foo": 1 }; var validate = ajv.compile(schema); console.log(validate(data)); // true console.log(data); // { "foo": 1, "bar": "baz" } ``` Example 2 (`default` in `items`): ```javascript var schema = { "type": "array", "items": [ { "type": "number" }, { "type": "string", "default": "foo" } ] } var data = [ 1 ]; var validate = ajv.compile(schema); console.log(validate(data)); // true console.log(data); // [ 1, "foo" ] ``` `default` keywords in other cases are ignored: - not in `properties` or `items` subschemas - in schemas inside `anyOf`, `oneOf` and `not` (see [#42](https://github.com/ajv-validator/ajv/issues/42)) - in `if` subschema of `switch` keyword - in schemas generated by custom macro keywords The [`strictDefaults` option](#options) customizes Ajv's behavior for the defaults that Ajv ignores (`true` raises an error, and `"log"` outputs a warning). ## Coercing data types When you are validating user inputs all your data properties are usually strings. The option `coerceTypes` allows you to have your data types coerced to the types specified in your schema `type` keywords, both to pass the validation and to use the correctly typed data afterwards. This option modifies original data. __Please note__: if you pass a scalar value to the validating function its type will be coerced and it will pass the validation, but the value of the variable you pass won't be updated because scalars are passed by value. Example 1: ```javascript var ajv = new Ajv({ coerceTypes: true }); var schema = { "type": "object", "properties": { "foo": { "type": "number" }, "bar": { "type": "boolean" } }, "required": [ "foo", "bar" ] }; var data = { "foo": "1", "bar": "false" }; var validate = ajv.compile(schema); console.log(validate(data)); // true console.log(data); // { "foo": 1, "bar": false } ``` Example 2 (array coercions): ```javascript var ajv = new Ajv({ coerceTypes: 'array' }); var schema = { "properties": { "foo": { "type": "array", "items": { "type": "number" } }, "bar": { "type": "boolean" } } }; var data = { "foo": "1", "bar": ["false"] }; var validate = ajv.compile(schema); console.log(validate(data)); // true console.log(data); // { "foo": [1], "bar": false } ``` The coercion rules, as you can see from the example, are different from JavaScript both to validate user input as expected and to have the coercion reversible (to correctly validate cases where different types are defined in subschemas of "anyOf" and other compound keywords). See [Coercion rules](https://github.com/ajv-validator/ajv/blob/master/COERCION.md) for details. ## API ##### new Ajv(Object options) -&gt; Object Create Ajv instance. ##### .compile(Object schema) -&gt; Function&lt;Object data&gt; Generate validating function and cache the compiled schema for future use. Validating function returns a boolean value. This function has properties `errors` and `schema`. Errors encountered during the last validation are assigned to `errors` property (it is assigned `null` if there was no errors). `schema` property contains the reference to the original schema. The schema passed to this method will be validated against meta-schema unless `validateSchema` option is false. If schema is invalid, an error will be thrown. See [options](#options). ##### <a name="api-compileAsync"></a>.compileAsync(Object schema [, Boolean meta] [, Function callback]) -&gt; Promise Asynchronous version of `compile` method that loads missing remote schemas using asynchronous function in `options.loadSchema`. This function returns a Promise that resolves to a validation function. An optional callback passed to `compileAsync` will be called with 2 parameters: error (or null) and validating function. The returned promise will reject (and the callback will be called with an error) when: - missing schema can't be loaded (`loadSchema` returns a Promise that rejects). - a schema containing a missing reference is loaded, but the reference cannot be resolved. - schema (or some loaded/referenced schema) is invalid. The function compiles schema and loads the first missing schema (or meta-schema) until all missing schemas are loaded. You can asynchronously compile meta-schema by passing `true` as the second parameter. See example in [Asynchronous compilation](#asynchronous-schema-compilation). ##### .validate(Object schema|String key|String ref, data) -&gt; Boolean Validate data using passed schema (it will be compiled and cached). Instead of the schema you can use the key that was previously passed to `addSchema`, the schema id if it was present in the schema or any previously resolved reference. Validation errors will be available in the `errors` property of Ajv instance (`null` if there were no errors). __Please note__: every time this method is called the errors are overwritten so you need to copy them to another variable if you want to use them later. If the schema is asynchronous (has `$async` keyword on the top level) this method returns a Promise. See [Asynchronous validation](#asynchronous-validation). ##### .addSchema(Array&lt;Object&gt;|Object schema [, String key]) -&gt; Ajv Add schema(s) to validator instance. This method does not compile schemas (but it still validates them). Because of that dependencies can be added in any order and circular dependencies are supported. It also prevents unnecessary compilation of schemas that are containers for other schemas but not used as a whole. Array of schemas can be passed (schemas should have ids), the second parameter will be ignored. Key can be passed that can be used to reference the schema and will be used as the schema id if there is no id inside the schema. If the key is not passed, the schema id will be used as the key. Once the schema is added, it (and all the references inside it) can be referenced in other schemas and used to validate data. Although `addSchema` does not compile schemas, explicit compilation is not required - the schema will be compiled when it is used first time. By default the schema is validated against meta-schema before it is added, and if the schema does not pass validation the exception is thrown. This behaviour is controlled by `validateSchema` option. __Please note__: Ajv uses the [method chaining syntax](https://en.wikipedia.org/wiki/Method_chaining) for all methods with the prefix `add*` and `remove*`. This allows you to do nice things like the following. ```javascript var validate = new Ajv().addSchema(schema).addFormat(name, regex).getSchema(uri); ``` ##### .addMetaSchema(Array&lt;Object&gt;|Object schema [, String key]) -&gt; Ajv Adds meta schema(s) that can be used to validate other schemas. That function should be used instead of `addSchema` because there may be instance options that would compile a meta schema incorrectly (at the moment it is `removeAdditional` option). There is no need to explicitly add draft-07 meta schema (http://json-schema.org/draft-07/schema) - it is added by default, unless option `meta` is set to `false`. You only need to use it if you have a changed meta-schema that you want to use to validate your schemas. See `validateSchema`. ##### <a name="api-validateschema"></a>.validateSchema(Object schema) -&gt; Boolean Validates schema. This method should be used to validate schemas rather than `validate` due to the inconsistency of `uri` format in JSON Schema standard. By default this method is called automatically when the schema is added, so you rarely need to use it directly. If schema doesn't have `$schema` property, it is validated against draft 6 meta-schema (option `meta` should not be false). If schema has `$schema` property, then the schema with this id (that should be previously added) is used to validate passed schema. Errors will be available at `ajv.errors`. ##### .getSchema(String key) -&gt; Function&lt;Object data&gt; Retrieve compiled schema previously added with `addSchema` by the key passed to `addSchema` or by its full reference (id). The returned validating function has `schema` property with the reference to the original schema. ##### .removeSchema([Object schema|String key|String ref|RegExp pattern]) -&gt; Ajv Remove added/cached schema. Even if schema is referenced by other schemas it can be safely removed as dependent schemas have local references. Schema can be removed using: - key passed to `addSchema` - it's full reference (id) - RegExp that should match schema id or key (meta-schemas won't be removed) - actual schema object that will be stable-stringified to remove schema from cache If no parameter is passed all schemas but meta-schemas will be removed and the cache will be cleared. ##### <a name="api-addformat"></a>.addFormat(String name, String|RegExp|Function|Object format) -&gt; Ajv Add custom format to validate strings or numbers. It can also be used to replace pre-defined formats for Ajv instance. Strings are converted to RegExp. Function should return validation result as `true` or `false`. If object is passed it should have properties `validate`, `compare` and `async`: - _validate_: a string, RegExp or a function as described above. - _compare_: an optional comparison function that accepts two strings and compares them according to the format meaning. This function is used with keywords `formatMaximum`/`formatMinimum` (defined in [ajv-keywords](https://github.com/ajv-validator/ajv-keywords) package). It should return `1` if the first value is bigger than the second value, `-1` if it is smaller and `0` if it is equal. - _async_: an optional `true` value if `validate` is an asynchronous function; in this case it should return a promise that resolves with a value `true` or `false`. - _type_: an optional type of data that the format applies to. It can be `"string"` (default) or `"number"` (see https://github.com/ajv-validator/ajv/issues/291#issuecomment-259923858). If the type of data is different, the validation will pass. Custom formats can be also added via `formats` option. ##### <a name="api-addkeyword"></a>.addKeyword(String keyword, Object definition) -&gt; Ajv Add custom validation keyword to Ajv instance. Keyword should be different from all standard JSON Schema keywords and different from previously defined keywords. There is no way to redefine keywords or to remove keyword definition from the instance. Keyword must start with a letter, `_` or `$`, and may continue with letters, numbers, `_`, `$`, or `-`. It is recommended to use an application-specific prefix for keywords to avoid current and future name collisions. Example Keywords: - `"xyz-example"`: valid, and uses prefix for the xyz project to avoid name collisions. - `"example"`: valid, but not recommended as it could collide with future versions of JSON Schema etc. - `"3-example"`: invalid as numbers are not allowed to be the first character in a keyword Keyword definition is an object with the following properties: - _type_: optional string or array of strings with data type(s) that the keyword applies to. If not present, the keyword will apply to all types. - _validate_: validating function - _compile_: compiling function - _macro_: macro function - _inline_: compiling function that returns code (as string) - _schema_: an optional `false` value used with "validate" keyword to not pass schema - _metaSchema_: an optional meta-schema for keyword schema - _dependencies_: an optional list of properties that must be present in the parent schema - it will be checked during schema compilation - _modifying_: `true` MUST be passed if keyword modifies data - _statements_: `true` can be passed in case inline keyword generates statements (as opposed to expression) - _valid_: pass `true`/`false` to pre-define validation result, the result returned from validation function will be ignored. This option cannot be used with macro keywords. - _$data_: an optional `true` value to support [$data reference](#data-reference) as the value of custom keyword. The reference will be resolved at validation time. If the keyword has meta-schema it would be extended to allow $data and it will be used to validate the resolved value. Supporting $data reference requires that keyword has validating function (as the only option or in addition to compile, macro or inline function). - _async_: an optional `true` value if the validation function is asynchronous (whether it is compiled or passed in _validate_ property); in this case it should return a promise that resolves with a value `true` or `false`. This option is ignored in case of "macro" and "inline" keywords. - _errors_: an optional boolean or string `"full"` indicating whether keyword returns errors. If this property is not set Ajv will determine if the errors were set in case of failed validation. _compile_, _macro_ and _inline_ are mutually exclusive, only one should be used at a time. _validate_ can be used separately or in addition to them to support $data reference. __Please note__: If the keyword is validating data type that is different from the type(s) in its definition, the validation function will not be called (and expanded macro will not be used), so there is no need to check for data type inside validation function or inside schema returned by macro function (unless you want to enforce a specific type and for some reason do not want to use a separate `type` keyword for that). In the same way as standard keywords work, if the keyword does not apply to the data type being validated, the validation of this keyword will succeed. See [Defining custom keywords](#defining-custom-keywords) for more details. ##### .getKeyword(String keyword) -&gt; Object|Boolean Returns custom keyword definition, `true` for pre-defined keywords and `false` if the keyword is unknown. ##### .removeKeyword(String keyword) -&gt; Ajv Removes custom or pre-defined keyword so you can redefine them. While this method can be used to extend pre-defined keywords, it can also be used to completely change their meaning - it may lead to unexpected results. __Please note__: schemas compiled before the keyword is removed will continue to work without changes. To recompile schemas use `removeSchema` method and compile them again. ##### .errorsText([Array&lt;Object&gt; errors [, Object options]]) -&gt; String Returns the text with all errors in a String. Options can have properties `separator` (string used to separate errors, ", " by default) and `dataVar` (the variable name that dataPaths are prefixed with, "data" by default). ## Options Defaults: ```javascript { // validation and reporting options: $data: false, allErrors: false, verbose: false, $comment: false, // NEW in Ajv version 6.0 jsonPointers: false, uniqueItems: true, unicode: true, nullable: false, format: 'fast', formats: {}, unknownFormats: true, schemas: {}, logger: undefined, // referenced schema options: schemaId: '$id', missingRefs: true, extendRefs: 'ignore', // recommended 'fail' loadSchema: undefined, // function(uri: string): Promise {} // options to modify validated data: removeAdditional: false, useDefaults: false, coerceTypes: false, // strict mode options strictDefaults: false, strictKeywords: false, strictNumbers: false, // asynchronous validation options: transpile: undefined, // requires ajv-async package // advanced options: meta: true, validateSchema: true, addUsedSchema: true, inlineRefs: true, passContext: false, loopRequired: Infinity, ownProperties: false, multipleOfPrecision: false, errorDataPath: 'object', // deprecated messages: true, sourceCode: false, processCode: undefined, // function (str: string, schema: object): string {} cache: new Cache, serialize: undefined } ``` ##### Validation and reporting options - _$data_: support [$data references](#data-reference). Draft 6 meta-schema that is added by default will be extended to allow them. If you want to use another meta-schema you need to use $dataMetaSchema method to add support for $data reference. See [API](#api). - _allErrors_: check all rules collecting all errors. Default is to return after the first error. - _verbose_: include the reference to the part of the schema (`schema` and `parentSchema`) and validated data in errors (false by default). - _$comment_ (NEW in Ajv version 6.0): log or pass the value of `$comment` keyword to a function. Option values: - `false` (default): ignore $comment keyword. - `true`: log the keyword value to console. - function: pass the keyword value, its schema path and root schema to the specified function - _jsonPointers_: set `dataPath` property of errors using [JSON Pointers](https://tools.ietf.org/html/rfc6901) instead of JavaScript property access notation. - _uniqueItems_: validate `uniqueItems` keyword (true by default). - _unicode_: calculate correct length of strings with unicode pairs (true by default). Pass `false` to use `.length` of strings that is faster, but gives "incorrect" lengths of strings with unicode pairs - each unicode pair is counted as two characters. - _nullable_: support keyword "nullable" from [Open API 3 specification](https://swagger.io/docs/specification/data-models/data-types/). - _format_: formats validation mode. Option values: - `"fast"` (default) - simplified and fast validation (see [Formats](#formats) for details of which formats are available and affected by this option). - `"full"` - more restrictive and slow validation. E.g., 25:00:00 and 2015/14/33 will be invalid time and date in 'full' mode but it will be valid in 'fast' mode. - `false` - ignore all format keywords. - _formats_: an object with custom formats. Keys and values will be passed to `addFormat` method. - _keywords_: an object with custom keywords. Keys and values will be passed to `addKeyword` method. - _unknownFormats_: handling of unknown formats. Option values: - `true` (default) - if an unknown format is encountered the exception is thrown during schema compilation. If `format` keyword value is [$data reference](#data-reference) and it is unknown the validation will fail. - `[String]` - an array of unknown format names that will be ignored. This option can be used to allow usage of third party schemas with format(s) for which you don't have definitions, but still fail if another unknown format is used. If `format` keyword value is [$data reference](#data-reference) and it is not in this array the validation will fail. - `"ignore"` - to log warning during schema compilation and always pass validation (the default behaviour in versions before 5.0.0). This option is not recommended, as it allows to mistype format name and it won't be validated without any error message. This behaviour is required by JSON Schema specification. - _schemas_: an array or object of schemas that will be added to the instance. In case you pass the array the schemas must have IDs in them. When the object is passed the method `addSchema(value, key)` will be called for each schema in this object. - _logger_: sets the logging method. Default is the global `console` object that should have methods `log`, `warn` and `error`. See [Error logging](#error-logging). Option values: - custom logger - it should have methods `log`, `warn` and `error`. If any of these methods is missing an exception will be thrown. - `false` - logging is disabled. ##### Referenced schema options - _schemaId_: this option defines which keywords are used as schema URI. Option value: - `"$id"` (default) - only use `$id` keyword as schema URI (as specified in JSON Schema draft-06/07), ignore `id` keyword (if it is present a warning will be logged). - `"id"` - only use `id` keyword as schema URI (as specified in JSON Schema draft-04), ignore `$id` keyword (if it is present a warning will be logged). - `"auto"` - use both `$id` and `id` keywords as schema URI. If both are present (in the same schema object) and different the exception will be thrown during schema compilation. - _missingRefs_: handling of missing referenced schemas. Option values: - `true` (default) - if the reference cannot be resolved during compilation the exception is thrown. The thrown error has properties `missingRef` (with hash fragment) and `missingSchema` (without it). Both properties are resolved relative to the current base id (usually schema id, unless it was substituted). - `"ignore"` - to log error during compilation and always pass validation. - `"fail"` - to log error and successfully compile schema but fail validation if this rule is checked. - _extendRefs_: validation of other keywords when `$ref` is present in the schema. Option values: - `"ignore"` (default) - when `$ref` is used other keywords are ignored (as per [JSON Reference](https://tools.ietf.org/html/draft-pbryan-zyp-json-ref-03#section-3) standard). A warning will be logged during the schema compilation. - `"fail"` (recommended) - if other validation keywords are used together with `$ref` the exception will be thrown when the schema is compiled. This option is recommended to make sure schema has no keywords that are ignored, which can be confusing. - `true` - validate all keywords in the schemas with `$ref` (the default behaviour in versions before 5.0.0). - _loadSchema_: asynchronous function that will be used to load remote schemas when `compileAsync` [method](#api-compileAsync) is used and some reference is missing (option `missingRefs` should NOT be 'fail' or 'ignore'). This function should accept remote schema uri as a parameter and return a Promise that resolves to a schema. See example in [Asynchronous compilation](#asynchronous-schema-compilation). ##### Options to modify validated data - _removeAdditional_: remove additional properties - see example in [Filtering data](#filtering-data). This option is not used if schema is added with `addMetaSchema` method. Option values: - `false` (default) - not to remove additional properties - `"all"` - all additional properties are removed, regardless of `additionalProperties` keyword in schema (and no validation is made for them). - `true` - only additional properties with `additionalProperties` keyword equal to `false` are removed. - `"failing"` - additional properties that fail schema validation will be removed (where `additionalProperties` keyword is `false` or schema). - _useDefaults_: replace missing or undefined properties and items with the values from corresponding `default` keywords. Default behaviour is to ignore `default` keywords. This option is not used if schema is added with `addMetaSchema` method. See examples in [Assigning defaults](#assigning-defaults). Option values: - `false` (default) - do not use defaults - `true` - insert defaults by value (object literal is used). - `"empty"` - in addition to missing or undefined, use defaults for properties and items that are equal to `null` or `""` (an empty string). - `"shared"` (deprecated) - insert defaults by reference. If the default is an object, it will be shared by all instances of validated data. If you modify the inserted default in the validated data, it will be modified in the schema as well. - _coerceTypes_: change data type of data to match `type` keyword. See the example in [Coercing data types](#coercing-data-types) and [coercion rules](https://github.com/ajv-validator/ajv/blob/master/COERCION.md). Option values: - `false` (default) - no type coercion. - `true` - coerce scalar data types. - `"array"` - in addition to coercions between scalar types, coerce scalar data to an array with one element and vice versa (as required by the schema). ##### Strict mode options - _strictDefaults_: report ignored `default` keywords in schemas. Option values: - `false` (default) - ignored defaults are not reported - `true` - if an ignored default is present, throw an error - `"log"` - if an ignored default is present, log warning - _strictKeywords_: report unknown keywords in schemas. Option values: - `false` (default) - unknown keywords are not reported - `true` - if an unknown keyword is present, throw an error - `"log"` - if an unknown keyword is present, log warning - _strictNumbers_: validate numbers strictly, failing validation for NaN and Infinity. Option values: - `false` (default) - NaN or Infinity will pass validation for numeric types - `true` - NaN or Infinity will not pass validation for numeric types ##### Asynchronous validation options - _transpile_: Requires [ajv-async](https://github.com/ajv-validator/ajv-async) package. It determines whether Ajv transpiles compiled asynchronous validation function. Option values: - `undefined` (default) - transpile with [nodent](https://github.com/MatAtBread/nodent) if async functions are not supported. - `true` - always transpile with nodent. - `false` - do not transpile; if async functions are not supported an exception will be thrown. ##### Advanced options - _meta_: add [meta-schema](http://json-schema.org/documentation.html) so it can be used by other schemas (true by default). If an object is passed, it will be used as the default meta-schema for schemas that have no `$schema` keyword. This default meta-schema MUST have `$schema` keyword. - _validateSchema_: validate added/compiled schemas against meta-schema (true by default). `$schema` property in the schema can be http://json-schema.org/draft-07/schema or absent (draft-07 meta-schema will be used) or can be a reference to the schema previously added with `addMetaSchema` method. Option values: - `true` (default) - if the validation fails, throw the exception. - `"log"` - if the validation fails, log error. - `false` - skip schema validation. - _addUsedSchema_: by default methods `compile` and `validate` add schemas to the instance if they have `$id` (or `id`) property that doesn't start with "#". If `$id` is present and it is not unique the exception will be thrown. Set this option to `false` to skip adding schemas to the instance and the `$id` uniqueness check when these methods are used. This option does not affect `addSchema` method. - _inlineRefs_: Affects compilation of referenced schemas. Option values: - `true` (default) - the referenced schemas that don't have refs in them are inlined, regardless of their size - that substantially improves performance at the cost of the bigger size of compiled schema functions. - `false` - to not inline referenced schemas (they will be compiled as separate functions). - integer number - to limit the maximum number of keywords of the schema that will be inlined. - _passContext_: pass validation context to custom keyword functions. If this option is `true` and you pass some context to the compiled validation function with `validate.call(context, data)`, the `context` will be available as `this` in your custom keywords. By default `this` is Ajv instance. - _loopRequired_: by default `required` keyword is compiled into a single expression (or a sequence of statements in `allErrors` mode). In case of a very large number of properties in this keyword it may result in a very big validation function. Pass integer to set the number of properties above which `required` keyword will be validated in a loop - smaller validation function size but also worse performance. - _ownProperties_: by default Ajv iterates over all enumerable object properties; when this option is `true` only own enumerable object properties (i.e. found directly on the object rather than on its prototype) are iterated. Contributed by @mbroadst. - _multipleOfPrecision_: by default `multipleOf` keyword is validated by comparing the result of division with parseInt() of that result. It works for dividers that are bigger than 1. For small dividers such as 0.01 the result of the division is usually not integer (even when it should be integer, see issue [#84](https://github.com/ajv-validator/ajv/issues/84)). If you need to use fractional dividers set this option to some positive integer N to have `multipleOf` validated using this formula: `Math.abs(Math.round(division) - division) < 1e-N` (it is slower but allows for float arithmetics deviations). - _errorDataPath_ (deprecated): set `dataPath` to point to 'object' (default) or to 'property' when validating keywords `required`, `additionalProperties` and `dependencies`. - _messages_: Include human-readable messages in errors. `true` by default. `false` can be passed when custom messages are used (e.g. with [ajv-i18n](https://github.com/ajv-validator/ajv-i18n)). - _sourceCode_: add `sourceCode` property to validating function (for debugging; this code can be different from the result of toString call). - _processCode_: an optional function to process generated code before it is passed to Function constructor. It can be used to either beautify (the validating function is generated without line-breaks) or to transpile code. Starting from version 5.0.0 this option replaced options: - `beautify` that formatted the generated function using [js-beautify](https://github.com/beautify-web/js-beautify). If you want to beautify the generated code pass a function calling `require('js-beautify').js_beautify` as `processCode: code => js_beautify(code)`. - `transpile` that transpiled asynchronous validation function. You can still use `transpile` option with [ajv-async](https://github.com/ajv-validator/ajv-async) package. See [Asynchronous validation](#asynchronous-validation) for more information. - _cache_: an optional instance of cache to store compiled schemas using stable-stringified schema as a key. For example, set-associative cache [sacjs](https://github.com/epoberezkin/sacjs) can be used. If not passed then a simple hash is used which is good enough for the common use case (a limited number of statically defined schemas). Cache should have methods `put(key, value)`, `get(key)`, `del(key)` and `clear()`. - _serialize_: an optional function to serialize schema to cache key. Pass `false` to use schema itself as a key (e.g., if WeakMap used as a cache). By default [fast-json-stable-stringify](https://github.com/epoberezkin/fast-json-stable-stringify) is used. ## Validation errors In case of validation failure, Ajv assigns the array of errors to `errors` property of validation function (or to `errors` property of Ajv instance when `validate` or `validateSchema` methods were called). In case of [asynchronous validation](#asynchronous-validation), the returned promise is rejected with exception `Ajv.ValidationError` that has `errors` property. ### Error objects Each error is an object with the following properties: - _keyword_: validation keyword. - _dataPath_: the path to the part of the data that was validated. By default `dataPath` uses JavaScript property access notation (e.g., `".prop[1].subProp"`). When the option `jsonPointers` is true (see [Options](#options)) `dataPath` will be set using JSON pointer standard (e.g., `"/prop/1/subProp"`). - _schemaPath_: the path (JSON-pointer as a URI fragment) to the schema of the keyword that failed validation. - _params_: the object with the additional information about error that can be used to create custom error messages (e.g., using [ajv-i18n](https://github.com/ajv-validator/ajv-i18n) package). See below for parameters set by all keywords. - _message_: the standard error message (can be excluded with option `messages` set to false). - _schema_: the schema of the keyword (added with `verbose` option). - _parentSchema_: the schema containing the keyword (added with `verbose` option) - _data_: the data validated by the keyword (added with `verbose` option). __Please note__: `propertyNames` keyword schema validation errors have an additional property `propertyName`, `dataPath` points to the object. After schema validation for each property name, if it is invalid an additional error is added with the property `keyword` equal to `"propertyNames"`. ### Error parameters Properties of `params` object in errors depend on the keyword that failed validation. - `maxItems`, `minItems`, `maxLength`, `minLength`, `maxProperties`, `minProperties` - property `limit` (number, the schema of the keyword). - `additionalItems` - property `limit` (the maximum number of allowed items in case when `items` keyword is an array of schemas and `additionalItems` is false). - `additionalProperties` - property `additionalProperty` (the property not used in `properties` and `patternProperties` keywords). - `dependencies` - properties: - `property` (dependent property), - `missingProperty` (required missing dependency - only the first one is reported currently) - `deps` (required dependencies, comma separated list as a string), - `depsCount` (the number of required dependencies). - `format` - property `format` (the schema of the keyword). - `maximum`, `minimum` - properties: - `limit` (number, the schema of the keyword), - `exclusive` (boolean, the schema of `exclusiveMaximum` or `exclusiveMinimum`), - `comparison` (string, comparison operation to compare the data to the limit, with the data on the left and the limit on the right; can be "<", "<=", ">", ">=") - `multipleOf` - property `multipleOf` (the schema of the keyword) - `pattern` - property `pattern` (the schema of the keyword) - `required` - property `missingProperty` (required property that is missing). - `propertyNames` - property `propertyName` (an invalid property name). - `patternRequired` (in ajv-keywords) - property `missingPattern` (required pattern that did not match any property). - `type` - property `type` (required type(s), a string, can be a comma-separated list) - `uniqueItems` - properties `i` and `j` (indices of duplicate items). - `const` - property `allowedValue` pointing to the value (the schema of the keyword). - `enum` - property `allowedValues` pointing to the array of values (the schema of the keyword). - `$ref` - property `ref` with the referenced schema URI. - `oneOf` - property `passingSchemas` (array of indices of passing schemas, null if no schema passes). - custom keywords (in case keyword definition doesn't create errors) - property `keyword` (the keyword name). ### Error logging Using the `logger` option when initiallizing Ajv will allow you to define custom logging. Here you can build upon the exisiting logging. The use of other logging packages is supported as long as the package or its associated wrapper exposes the required methods. If any of the required methods are missing an exception will be thrown. - **Required Methods**: `log`, `warn`, `error` ```javascript var otherLogger = new OtherLogger(); var ajv = new Ajv({ logger: { log: console.log.bind(console), warn: function warn() { otherLogger.logWarn.apply(otherLogger, arguments); }, error: function error() { otherLogger.logError.apply(otherLogger, arguments); console.error.apply(console, arguments); } } }); ``` ## Plugins Ajv can be extended with plugins that add custom keywords, formats or functions to process generated code. When such plugin is published as npm package it is recommended that it follows these conventions: - it exports a function - this function accepts ajv instance as the first parameter and returns the same instance to allow chaining - this function can accept an optional configuration as the second parameter If you have published a useful plugin please submit a PR to add it to the next section. ## Related packages - [ajv-async](https://github.com/ajv-validator/ajv-async) - plugin to configure async validation mode - [ajv-bsontype](https://github.com/BoLaMN/ajv-bsontype) - plugin to validate mongodb's bsonType formats - [ajv-cli](https://github.com/jessedc/ajv-cli) - command line interface - [ajv-errors](https://github.com/ajv-validator/ajv-errors) - plugin for custom error messages - [ajv-i18n](https://github.com/ajv-validator/ajv-i18n) - internationalised error messages - [ajv-istanbul](https://github.com/ajv-validator/ajv-istanbul) - plugin to instrument generated validation code to measure test coverage of your schemas - [ajv-keywords](https://github.com/ajv-validator/ajv-keywords) - plugin with custom validation keywords (select, typeof, etc.) - [ajv-merge-patch](https://github.com/ajv-validator/ajv-merge-patch) - plugin with keywords $merge and $patch - [ajv-pack](https://github.com/ajv-validator/ajv-pack) - produces a compact module exporting validation functions - [ajv-formats-draft2019](https://github.com/luzlab/ajv-formats-draft2019) - format validators for draft2019 that aren't already included in ajv (ie. `idn-hostname`, `idn-email`, `iri`, `iri-reference` and `duration`). ## Some packages using Ajv - [webpack](https://github.com/webpack/webpack) - a module bundler. Its main purpose is to bundle JavaScript files for usage in a browser - [jsonscript-js](https://github.com/JSONScript/jsonscript-js) - the interpreter for [JSONScript](http://www.jsonscript.org) - scripted processing of existing endpoints and services - [osprey-method-handler](https://github.com/mulesoft-labs/osprey-method-handler) - Express middleware for validating requests and responses based on a RAML method object, used in [osprey](https://github.com/mulesoft/osprey) - validating API proxy generated from a RAML definition - [har-validator](https://github.com/ahmadnassri/har-validator) - HTTP Archive (HAR) validator - [jsoneditor](https://github.com/josdejong/jsoneditor) - a web-based tool to view, edit, format, and validate JSON http://jsoneditoronline.org - [JSON Schema Lint](https://github.com/nickcmaynard/jsonschemalint) - a web tool to validate JSON/YAML document against a single JSON Schema http://jsonschemalint.com - [objection](https://github.com/vincit/objection.js) - SQL-friendly ORM for Node.js - [table](https://github.com/gajus/table) - formats data into a string table - [ripple-lib](https://github.com/ripple/ripple-lib) - a JavaScript API for interacting with [Ripple](https://ripple.com) in Node.js and the browser - [restbase](https://github.com/wikimedia/restbase) - distributed storage with REST API & dispatcher for backend services built to provide a low-latency & high-throughput API for Wikipedia / Wikimedia content - [hippie-swagger](https://github.com/CacheControl/hippie-swagger) - [Hippie](https://github.com/vesln/hippie) wrapper that provides end to end API testing with swagger validation - [react-form-controlled](https://github.com/seeden/react-form-controlled) - React controlled form components with validation - [rabbitmq-schema](https://github.com/tjmehta/rabbitmq-schema) - a schema definition module for RabbitMQ graphs and messages - [@query/schema](https://www.npmjs.com/package/@query/schema) - stream filtering with a URI-safe query syntax parsing to JSON Schema - [chai-ajv-json-schema](https://github.com/peon374/chai-ajv-json-schema) - chai plugin to us JSON Schema with expect in mocha tests - [grunt-jsonschema-ajv](https://github.com/SignpostMarv/grunt-jsonschema-ajv) - Grunt plugin for validating files against JSON Schema - [extract-text-webpack-plugin](https://github.com/webpack-contrib/extract-text-webpack-plugin) - extract text from bundle into a file - [electron-builder](https://github.com/electron-userland/electron-builder) - a solution to package and build a ready for distribution Electron app - [addons-linter](https://github.com/mozilla/addons-linter) - Mozilla Add-ons Linter - [gh-pages-generator](https://github.com/epoberezkin/gh-pages-generator) - multi-page site generator converting markdown files to GitHub pages - [ESLint](https://github.com/eslint/eslint) - the pluggable linting utility for JavaScript and JSX ## Tests ``` npm install git submodule update --init npm test ``` ## Contributing All validation functions are generated using doT templates in [dot](https://github.com/ajv-validator/ajv/tree/master/lib/dot) folder. Templates are precompiled so doT is not a run-time dependency. `npm run build` - compiles templates to [dotjs](https://github.com/ajv-validator/ajv/tree/master/lib/dotjs) folder. `npm run watch` - automatically compiles templates when files in dot folder change Please see [Contributing guidelines](https://github.com/ajv-validator/ajv/blob/master/CONTRIBUTING.md) ## Changes history See https://github.com/ajv-validator/ajv/releases __Please note__: [Changes in version 7.0.0-beta](https://github.com/ajv-validator/ajv/releases/tag/v7.0.0-beta.0) [Version 6.0.0](https://github.com/ajv-validator/ajv/releases/tag/v6.0.0). ## Code of conduct Please review and follow the [Code of conduct](https://github.com/ajv-validator/ajv/blob/master/CODE_OF_CONDUCT.md). Please report any unacceptable behaviour to ajv.validator@gmail.com - it will be reviewed by the project team. ## Open-source software support Ajv is a part of [Tidelift subscription](https://tidelift.com/subscription/pkg/npm-ajv?utm_source=npm-ajv&utm_medium=referral&utm_campaign=readme) - it provides a centralised support to open-source software users, in addition to the support provided by software maintainers. ## License [MIT](https://github.com/ajv-validator/ajv/blob/master/LICENSE) agent-base ========== ### Turn a function into an [`http.Agent`][http.Agent] instance [](https://github.com/TooTallNate/node-agent-base/actions?workflow=Node+CI) This module provides an `http.Agent` generator. That is, you pass it an async callback function, and it returns a new `http.Agent` instance that will invoke the given callback function when sending outbound HTTP requests. #### Some subclasses: Here's some more interesting uses of `agent-base`. Send a pull request to list yours! * [`http-proxy-agent`][http-proxy-agent]: An HTTP(s) proxy `http.Agent` implementation for HTTP endpoints * [`https-proxy-agent`][https-proxy-agent]: An HTTP(s) proxy `http.Agent` implementation for HTTPS endpoints * [`pac-proxy-agent`][pac-proxy-agent]: A PAC file proxy `http.Agent` implementation for HTTP and HTTPS * [`socks-proxy-agent`][socks-proxy-agent]: A SOCKS proxy `http.Agent` implementation for HTTP and HTTPS Installation ------------ Install with `npm`: ``` bash $ npm install agent-base ``` Example ------- Here's a minimal example that creates a new `net.Socket` connection to the server for every HTTP request (i.e. the equivalent of `agent: false` option): ```js var net = require('net'); var tls = require('tls'); var url = require('url'); var http = require('http'); var agent = require('agent-base'); var endpoint = 'http://nodejs.org/api/'; var parsed = url.parse(endpoint); // This is the important part! parsed.agent = agent(function (req, opts) { var socket; // `secureEndpoint` is true when using the https module if (opts.secureEndpoint) { socket = tls.connect(opts); } else { socket = net.connect(opts); } return socket; }); // Everything else works just like normal... http.get(parsed, function (res) { console.log('"response" event!', res.headers); res.pipe(process.stdout); }); ``` Returning a Promise or using an `async` function is also supported: ```js agent(async function (req, opts) { await sleep(1000); // etc… }); ``` Return another `http.Agent` instance to "pass through" the responsibility for that HTTP request to that agent: ```js agent(function (req, opts) { return opts.secureEndpoint ? https.globalAgent : http.globalAgent; }); ``` API --- ## Agent(Function callback[, Object options]) → [http.Agent][] Creates a base `http.Agent` that will execute the callback function `callback` for every HTTP request that it is used as the `agent` for. The callback function is responsible for creating a `stream.Duplex` instance of some kind that will be used as the underlying socket in the HTTP request. The `options` object accepts the following properties: * `timeout` - Number - Timeout for the `callback()` function in milliseconds. Defaults to Infinity (optional). The callback function should have the following signature: ### callback(http.ClientRequest req, Object options, Function cb) → undefined The ClientRequest `req` can be accessed to read request headers and and the path, etc. The `options` object contains the options passed to the `http.request()`/`https.request()` function call, and is formatted to be directly passed to `net.connect()`/`tls.connect()`, or however else you want a Socket to be created. Pass the created socket to the callback function `cb` once created, and the HTTP request will continue to proceed. If the `https` module is used to invoke the HTTP request, then the `secureEndpoint` property on `options` _will be set to `true`_. License ------- (The MIT License) Copyright (c) 2013 Nathan Rajlich &lt;nathan@tootallnate.net&gt; Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. [http-proxy-agent]: https://github.com/TooTallNate/node-http-proxy-agent [https-proxy-agent]: https://github.com/TooTallNate/node-https-proxy-agent [pac-proxy-agent]: https://github.com/TooTallNate/node-pac-proxy-agent [socks-proxy-agent]: https://github.com/TooTallNate/node-socks-proxy-agent [http.Agent]: https://nodejs.org/api/http.html#http_class_http_agent # binary-install Install .tar.gz binary applications via npm ## Usage This library provides a single class `Binary` that takes a download url and some optional arguments. You **must** provide either `name` or `installDirectory` when creating your `Binary`. | option | decription | | ---------------- | --------------------------------------------- | | name | The name of your binary | | installDirectory | A path to the directory to install the binary | If an `installDirectory` is not provided, the binary will be installed at your OS specific config directory. On MacOS it defaults to `~/Library/Preferences/${name}-nodejs` After your `Binary` has been created, you can run `.install()` to install the binary, and `.run()` to run it. ### Example This is meant to be used as a library - create your `Binary` with your desired options, then call `.install()` in the `postinstall` of your `package.json`, `.run()` in the `bin` section of your `package.json`, and `.uninstall()` in the `preuninstall` section of your `package.json`. See [this example project](/example) to see how to create an npm package that installs and runs a binary using the Github releases API. # universal-url [![NPM Version][npm-image]][npm-url] [![Build Status][travis-image]][travis-url] [![Dependency Monitor][greenkeeper-image]][greenkeeper-url] > WHATWG [`URL`](https://developer.mozilla.org/en/docs/Web/API/URL) for Node & Browser. * For Node.js versions `>= 8`, the native implementation will be used. * For Node.js versions `< 8`, a [shim](https://npmjs.com/whatwg-url) will be used. * For web browsers without a native implementation, the same shim will be used. ## Installation [Node.js](http://nodejs.org/) `>= 6` is required. To install, type this at the command line: ```shell npm install universal-url ``` ## Usage ```js const {URL, URLSearchParams} = require('universal-url'); const url = new URL('http://domain/'); const params = new URLSearchParams('?param=value'); ``` Global shim: ```js require('universal-url').shim(); const url = new URL('http://domain/'); const params = new URLSearchParams('?param=value'); ``` ## Browserify/etc The bundled file size of this library can be large for a web browser. If this is a problem, try using [universal-url-lite](https://npmjs.com/universal-url-lite) in your build as an alias for this module. [npm-image]: https://img.shields.io/npm/v/universal-url.svg [npm-url]: https://npmjs.org/package/universal-url [travis-image]: https://img.shields.io/travis/stevenvachon/universal-url.svg [travis-url]: https://travis-ci.org/stevenvachon/universal-url [greenkeeper-image]: https://badges.greenkeeper.io/stevenvachon/universal-url.svg [greenkeeper-url]: https://greenkeeper.io/ Shims used when bundling asc for browser usage. The AssemblyScript Runtime ========================== The runtime provides the functionality necessary to dynamically allocate and deallocate memory of objects, arrays and buffers, as well as collect garbage that is no longer used. The current implementation is either a Two-Color Mark & Sweep (TCMS) garbage collector that must be called manually when the execution stack is unwound or an Incremental Tri-Color Mark & Sweep (ITCMS) garbage collector that is fully automated with a shadow stack, implemented on top of a Two-Level Segregate Fit (TLSF) memory manager. It's not designed to be the fastest of its kind, but intentionally focuses on simplicity and ease of integration until we can replace it with the real deal, i.e. Wasm GC. Interface --------- ### Garbage collector / `--exportRuntime` * **__new**(size: `usize`, id: `u32` = 0): `usize`<br /> Dynamically allocates a GC object of at least the specified size and returns its address. Alignment is guaranteed to be 16 bytes to fit up to v128 values naturally. GC-allocated objects cannot be used with `__realloc` and `__free`. * **__pin**(ptr: `usize`): `usize`<br /> Pins the object pointed to by `ptr` externally so it and its directly reachable members and indirectly reachable objects do not become garbage collected. * **__unpin**(ptr: `usize`): `void`<br /> Unpins the object pointed to by `ptr` externally so it can become garbage collected. * **__collect**(): `void`<br /> Performs a full garbage collection. ### Internals * **__alloc**(size: `usize`): `usize`<br /> Dynamically allocates a chunk of memory of at least the specified size and returns its address. Alignment is guaranteed to be 16 bytes to fit up to v128 values naturally. * **__realloc**(ptr: `usize`, size: `usize`): `usize`<br /> Dynamically changes the size of a chunk of memory, possibly moving it to a new address. * **__free**(ptr: `usize`): `void`<br /> Frees a dynamically allocated chunk of memory by its address. * **__renew**(ptr: `usize`, size: `usize`): `usize`<br /> Like `__realloc`, but for `__new`ed GC objects. * **__link**(parentPtr: `usize`, childPtr: `usize`, expectMultiple: `bool`): `void`<br /> Introduces a link from a parent object to a child object, i.e. upon `parent.field = child`. * **__visit**(ptr: `usize`, cookie: `u32`): `void`<br /> Concrete visitor implementation called during traversal. Cookie can be used to indicate one of multiple operations. * **__visit_globals**(cookie: `u32`): `void`<br /> Calls `__visit` on each global that is of a managed type. * **__visit_members**(ptr: `usize`, cookie: `u32`): `void`<br /> Calls `__visit` on each member of the object pointed to by `ptr`. * **__typeinfo**(id: `u32`): `RTTIFlags`<br /> Obtains the runtime type information for objects with the specified runtime id. Runtime type information is a set of flags indicating whether a type is managed, an array or similar, and what the relevant alignments when creating an instance externally are etc. * **__instanceof**(ptr: `usize`, classId: `u32`): `bool`<br /> Tests if the object pointed to by `ptr` is an instance of the specified class id. ITCMS / `--runtime incremental` ----- The Incremental Tri-Color Mark & Sweep garbage collector maintains a separate shadow stack of managed values in the background to achieve full automation. Maintaining another stack introduces some overhead compared to the simpler Two-Color Mark & Sweep garbage collector, but makes it independent of whether the execution stack is unwound or not when it is invoked, so the garbage collector can run interleaved with the program. There are several constants one can experiment with to tweak ITCMS's automation: * `--use ASC_GC_GRANULARITY=1024`<br /> How often to interrupt. The default of 1024 means "interrupt each 1024 bytes allocated". * `--use ASC_GC_STEPFACTOR=200`<br /> How long to interrupt. The default of 200% means "run at double the speed of allocations". * `--use ASC_GC_IDLEFACTOR=200`<br /> How long to idle. The default of 200% means "wait for memory to double before kicking in again". * `--use ASC_GC_MARKCOST=1`<br /> How costly it is to mark one object. Budget per interrupt is `GRANULARITY * STEPFACTOR / 100`. * `--use ASC_GC_SWEEPCOST=10`<br /> How costly it is to sweep one object. Budget per interrupt is `GRANULARITY * STEPFACTOR / 100`. TCMS / `--runtime minimal` ---- If automation and low pause times aren't strictly necessary, using the Two-Color Mark & Sweep garbage collector instead by invoking collection manually at appropriate times when the execution stack is unwound may be more performant as it simpler and has less overhead. The execution stack is typically unwound when invoking the collector externally, at a place that is not indirectly called from Wasm. STUB / `--runtime stub` ---- The stub is a maximally minimal runtime substitute, consisting of a simple and fast bump allocator with no means of freeing up memory again, except when freeing the respective most recently allocated object on top of the bump. Useful where memory is not a concern, and/or where it is sufficient to destroy the whole module including any potential garbage after execution. See also: [Garbage collection](https://www.assemblyscript.org/garbage-collection.html) [](https://www.npmjs.com/package/esprima) [](https://www.npmjs.com/package/esprima) [](https://travis-ci.org/jquery/esprima) [](https://codecov.io/github/jquery/esprima) **Esprima** ([esprima.org](http://esprima.org), BSD license) is a high performance, standard-compliant [ECMAScript](http://www.ecma-international.org/publications/standards/Ecma-262.htm) parser written in ECMAScript (also popularly known as [JavaScript](https://en.wikipedia.org/wiki/JavaScript)). Esprima is created and maintained by [Ariya Hidayat](https://twitter.com/ariyahidayat), with the help of [many contributors](https://github.com/jquery/esprima/contributors). ### Features - Full support for ECMAScript 2017 ([ECMA-262 8th Edition](http://www.ecma-international.org/publications/standards/Ecma-262.htm)) - Sensible [syntax tree format](https://github.com/estree/estree/blob/master/es5.md) as standardized by [ESTree project](https://github.com/estree/estree) - Experimental support for [JSX](https://facebook.github.io/jsx/), a syntax extension for [React](https://facebook.github.io/react/) - Optional tracking of syntax node location (index-based and line-column) - [Heavily tested](http://esprima.org/test/ci.html) (~1500 [unit tests](https://github.com/jquery/esprima/tree/master/test/fixtures) with [full code coverage](https://codecov.io/github/jquery/esprima)) ### API Esprima can be used to perform [lexical analysis](https://en.wikipedia.org/wiki/Lexical_analysis) (tokenization) or [syntactic analysis](https://en.wikipedia.org/wiki/Parsing) (parsing) of a JavaScript program. A simple example on Node.js REPL: ```javascript > var esprima = require('esprima'); > var program = 'const answer = 42'; > esprima.tokenize(program); [ { type: 'Keyword', value: 'const' }, { type: 'Identifier', value: 'answer' }, { type: 'Punctuator', value: '=' }, { type: 'Numeric', value: '42' } ] > esprima.parseScript(program); { type: 'Program', body: [ { type: 'VariableDeclaration', declarations: [Object], kind: 'const' } ], sourceType: 'script' } ``` For more information, please read the [complete documentation](http://esprima.org/doc). <p align="center"> <a href="http://gulpjs.com"> <img height="257" width="114" src="https://raw.githubusercontent.com/gulpjs/artwork/master/gulp-2x.png"> </a> </p> # flagged-respawn [![NPM version][npm-image]][npm-url] [![Downloads][downloads-image]][npm-url] [![Travis Build Status][travis-image]][travis-url] [![AppVeyor Build Status][appveyor-image]][appveyor-url] [![Coveralls Status][coveralls-image]][coveralls-url] [![Gitter chat][gitter-image]][gitter-url] A tool for respawning node binaries when special flags are present. ## What is it? Say you wrote a command line tool that runs arbitrary javascript (e.g. task runner, test framework, etc). For the sake of discussion, let's pretend it's a testing harness you've named `testify`. Everything is going splendidly until one day you decide to test some code that relies on a feature behind a v8 flag in node (`--harmony`, for example). Without much thought, you run `testify --harmony spec tests.js`. It doesn't work. After digging around for a bit, you realize this produces a [`process.argv`](http://nodejs.org/docs/latest/api/process.html#process_process_argv) of: `['node', '/usr/local/bin/test', '--harmony', 'spec', 'tests.js']` Crap. The `--harmony` flag is in the wrong place! It should be applied to the **node** command, not our binary. What we actually wanted was this: `['node', '--harmony', '/usr/local/bin/test', 'spec', 'tests.js']` Flagged-respawn fixes this problem and handles all the edge cases respawning creates, such as: - Providing a method to determine if a respawn is needed. - Piping stderr/stdout from the child into the parent. - Making the parent process exit with the same code as the child. - If the child is killed, making the parent exit with the same signal. To see it in action, clone this repository and run `npm install` / `npm run respawn` / `npm run nospawn`. ## Sample Usage ```js #!/usr/bin/env node const flaggedRespawn = require('flagged-respawn'); // get a list of all possible v8 flags for the running version of node const v8flags = require('v8flags').fetch(); flaggedRespawn(v8flags, process.argv, function (ready, child) { if (ready) { console.log('Running!'); // your cli code here } else { console.log('Special flags found, respawning.'); } if (process.pid !== child.pid) { console.log('Respawned to PID:', child.pid); } }); ``` ## API ### <u>flaggedRespawn(flags, argv, [ forcedFlags, ] callback) : Void</u> Respawns the script itself when *argv* has special flag contained in *flags* and/or *forcedFlags* is not empty. Because members of *flags* and *forcedFlags* are passed to `node` command, each of them needs to be a node flag or a V8 flag. #### Forbid respawning If `--no-respawning` flag is given in *argv*, this function does not respawned even if *argv* contains members of flags or *forcedFlags* is not empty. (This flag is also used internally to prevent from respawning more than once). #### Parameter: | Parameter | Type | Description | |:--------------|:------:|:----------------------------------------------------| | *flags* | Array | An array of node flags and V8 flags which are available when present in *argv*. | | *argv* | Array | Command line arguments to respawn. | | *forcedFlags* | Array or String | An array of node flags or a string of a single flag and V8 flags for respawning forcely. | | *callback* | function | A called function when not respawning or after respawned. | * **<u><i>callback</i>(ready, proc, argv) : Void</u>** *callback* function is called both when respawned or not, and it can be distinguished by callback's argument: *ready*. (*ready* indicates whether a process spawned its child process (false) or not (true), but it does not indicate whether a process is a spawned child process or not. *ready* for a spawned child process is true.) *argv* is an array of command line arguments which is respawned (when *ready* is false) or is passed current process except flags within *flags* and `--no-respawning` (when *ready* is true). **Parameter:** | Parameter | Type | Description | |:----------|:-------:|:--------------------------| | *ready* | boolean | True, if not respawning and is ready to execute main function. | | *proc* | object | Child process object if respawned, otherwise current process object. | | *argv* | Array | An array of command line arguments. | ## License MIT [downloads-image]: http://img.shields.io/npm/dm/flagged-respawn.svg [npm-url]: https://www.npmjs.com/package/flagged-respawn [npm-image]: http://img.shields.io/npm/v/flagged-respawn.svg [travis-url]: https://travis-ci.org/gulpjs/flagged-respawn [travis-image]: http://img.shields.io/travis/gulpjs/flagged-respawn.svg?label=travis-ci [appveyor-url]: https://ci.appveyor.com/project/gulpjs/flagged-respawn [appveyor-image]: https://img.shields.io/appveyor/ci/gulpjs/flagged-respawn.svg?label=appveyor [coveralls-url]: https://coveralls.io/r/gulpjs/flagged-respawn [coveralls-image]: http://img.shields.io/coveralls/gulpjs/flagged-respawn/master.svg [gitter-url]: https://gitter.im/gulpjs/gulp [gitter-image]: https://badges.gitter.im/gulpjs/gulp.svg # cliui  [](https://www.npmjs.com/package/cliui) [](https://conventionalcommits.org)  easily create complex multi-column command-line-interfaces. ## Example ```js const ui = require('cliui')() ui.div('Usage: $0 [command] [options]') ui.div({ text: 'Options:', padding: [2, 0, 1, 0] }) ui.div( { text: "-f, --file", width: 20, padding: [0, 4, 0, 4] }, { text: "the file to load." + chalk.green("(if this description is long it wraps).") , width: 20 }, { text: chalk.red("[required]"), align: 'right' } ) console.log(ui.toString()) ``` ## Deno/ESM Support As of `v7` `cliui` supports [Deno](https://github.com/denoland/deno) and [ESM](https://nodejs.org/api/esm.html#esm_ecmascript_modules): ```typescript import cliui from "https://deno.land/x/cliui/deno.ts"; const ui = cliui({}) ui.div('Usage: $0 [command] [options]') ui.div({ text: 'Options:', padding: [2, 0, 1, 0] }) ui.div({ text: "-f, --file", width: 20, padding: [0, 4, 0, 4] }) console.log(ui.toString()) ``` <img width="500" src="screenshot.png"> ## Layout DSL cliui exposes a simple layout DSL: If you create a single `ui.div`, passing a string rather than an object: * `\n`: characters will be interpreted as new rows. * `\t`: characters will be interpreted as new columns. * `\s`: characters will be interpreted as padding. **as an example...** ```js var ui = require('./')({ width: 60 }) ui.div( 'Usage: node ./bin/foo.js\n' + ' <regex>\t provide a regex\n' + ' <glob>\t provide a glob\t [required]' ) console.log(ui.toString()) ``` **will output:** ```shell Usage: node ./bin/foo.js <regex> provide a regex <glob> provide a glob [required] ``` ## Methods ```js cliui = require('cliui') ``` ### cliui({width: integer}) Specify the maximum width of the UI being generated. If no width is provided, cliui will try to get the current window's width and use it, and if that doesn't work, width will be set to `80`. ### cliui({wrap: boolean}) Enable or disable the wrapping of text in a column. ### cliui.div(column, column, column) Create a row with any number of columns, a column can either be a string, or an object with the following options: * **text:** some text to place in the column. * **width:** the width of a column. * **align:** alignment, `right` or `center`. * **padding:** `[top, right, bottom, left]`. * **border:** should a border be placed around the div? ### cliui.span(column, column, column) Similar to `div`, except the next row will be appended without a new line being created. ### cliui.resetOutput() Resets the UI elements of the current cliui instance, maintaining the values set for `width` and `wrap`. # Acorn A tiny, fast JavaScript parser written in JavaScript. ## Community Acorn is open source software released under an [MIT license](https://github.com/acornjs/acorn/blob/master/acorn/LICENSE). You are welcome to [report bugs](https://github.com/acornjs/acorn/issues) or create pull requests on [github](https://github.com/acornjs/acorn). For questions and discussion, please use the [Tern discussion forum](https://discuss.ternjs.net). ## Installation The easiest way to install acorn is from [`npm`](https://www.npmjs.com/): ```sh npm install acorn ``` Alternately, you can download the source and build acorn yourself: ```sh git clone https://github.com/acornjs/acorn.git cd acorn npm install ``` ## Interface **parse**`(input, options)` is the main interface to the library. The `input` parameter is a string, `options` can be undefined or an object setting some of the options listed below. The return value will be an abstract syntax tree object as specified by the [ESTree spec](https://github.com/estree/estree). ```javascript let acorn = require("acorn"); console.log(acorn.parse("1 + 1")); ``` When encountering a syntax error, the parser will raise a `SyntaxError` object with a meaningful message. The error object will have a `pos` property that indicates the string offset at which the error occurred, and a `loc` object that contains a `{line, column}` object referring to that same position. Options can be provided by passing a second argument, which should be an object containing any of these fields: - **ecmaVersion**: Indicates the ECMAScript version to parse. Must be either 3, 5, 6 (2015), 7 (2016), 8 (2017), 9 (2018), 10 (2019) or 11 (2020, partial support). This influences support for strict mode, the set of reserved words, and support for new syntax features. Default is 10. **NOTE**: Only 'stage 4' (finalized) ECMAScript features are being implemented by Acorn. Other proposed new features can be implemented through plugins. - **sourceType**: Indicate the mode the code should be parsed in. Can be either `"script"` or `"module"`. This influences global strict mode and parsing of `import` and `export` declarations. **NOTE**: If set to `"module"`, then static `import` / `export` syntax will be valid, even if `ecmaVersion` is less than 6. - **onInsertedSemicolon**: If given a callback, that callback will be called whenever a missing semicolon is inserted by the parser. The callback will be given the character offset of the point where the semicolon is inserted as argument, and if `locations` is on, also a `{line, column}` object representing this position. - **onTrailingComma**: Like `onInsertedSemicolon`, but for trailing commas. - **allowReserved**: If `false`, using a reserved word will generate an error. Defaults to `true` for `ecmaVersion` 3, `false` for higher versions. When given the value `"never"`, reserved words and keywords can also not be used as property names (as in Internet Explorer's old parser). - **allowReturnOutsideFunction**: By default, a return statement at the top level raises an error. Set this to `true` to accept such code. - **allowImportExportEverywhere**: By default, `import` and `export` declarations can only appear at a program's top level. Setting this option to `true` allows them anywhere where a statement is allowed. - **allowAwaitOutsideFunction**: By default, `await` expressions can only appear inside `async` functions. Setting this option to `true` allows to have top-level `await` expressions. They are still not allowed in non-`async` functions, though. - **allowHashBang**: When this is enabled (off by default), if the code starts with the characters `#!` (as in a shellscript), the first line will be treated as a comment. - **locations**: When `true`, each node has a `loc` object attached with `start` and `end` subobjects, each of which contains the one-based line and zero-based column numbers in `{line, column}` form. Default is `false`. - **onToken**: If a function is passed for this option, each found token will be passed in same format as tokens returned from `tokenizer().getToken()`. If array is passed, each found token is pushed to it. Note that you are not allowed to call the parser from the callback—that will corrupt its internal state. - **onComment**: If a function is passed for this option, whenever a comment is encountered the function will be called with the following parameters: - `block`: `true` if the comment is a block comment, false if it is a line comment. - `text`: The content of the comment. - `start`: Character offset of the start of the comment. - `end`: Character offset of the end of the comment. When the `locations` options is on, the `{line, column}` locations of the comment’s start and end are passed as two additional parameters. If array is passed for this option, each found comment is pushed to it as object in Esprima format: ```javascript { "type": "Line" | "Block", "value": "comment text", "start": Number, "end": Number, // If `locations` option is on: "loc": { "start": {line: Number, column: Number} "end": {line: Number, column: Number} }, // If `ranges` option is on: "range": [Number, Number] } ``` Note that you are not allowed to call the parser from the callback—that will corrupt its internal state. - **ranges**: Nodes have their start and end characters offsets recorded in `start` and `end` properties (directly on the node, rather than the `loc` object, which holds line/column data. To also add a [semi-standardized](https://bugzilla.mozilla.org/show_bug.cgi?id=745678) `range` property holding a `[start, end]` array with the same numbers, set the `ranges` option to `true`. - **program**: It is possible to parse multiple files into a single AST by passing the tree produced by parsing the first file as the `program` option in subsequent parses. This will add the toplevel forms of the parsed file to the "Program" (top) node of an existing parse tree. - **sourceFile**: When the `locations` option is `true`, you can pass this option to add a `source` attribute in every node’s `loc` object. Note that the contents of this option are not examined or processed in any way; you are free to use whatever format you choose. - **directSourceFile**: Like `sourceFile`, but a `sourceFile` property will be added (regardless of the `location` option) directly to the nodes, rather than the `loc` object. - **preserveParens**: If this option is `true`, parenthesized expressions are represented by (non-standard) `ParenthesizedExpression` nodes that have a single `expression` property containing the expression inside parentheses. **parseExpressionAt**`(input, offset, options)` will parse a single expression in a string, and return its AST. It will not complain if there is more of the string left after the expression. **tokenizer**`(input, options)` returns an object with a `getToken` method that can be called repeatedly to get the next token, a `{start, end, type, value}` object (with added `loc` property when the `locations` option is enabled and `range` property when the `ranges` option is enabled). When the token's type is `tokTypes.eof`, you should stop calling the method, since it will keep returning that same token forever. In ES6 environment, returned result can be used as any other protocol-compliant iterable: ```javascript for (let token of acorn.tokenizer(str)) { // iterate over the tokens } // transform code to array of tokens: var tokens = [...acorn.tokenizer(str)]; ``` **tokTypes** holds an object mapping names to the token type objects that end up in the `type` properties of tokens. **getLineInfo**`(input, offset)` can be used to get a `{line, column}` object for a given program string and offset. ### The `Parser` class Instances of the **`Parser`** class contain all the state and logic that drives a parse. It has static methods `parse`, `parseExpressionAt`, and `tokenizer` that match the top-level functions by the same name. When extending the parser with plugins, you need to call these methods on the extended version of the class. To extend a parser with plugins, you can use its static `extend` method. ```javascript var acorn = require("acorn"); var jsx = require("acorn-jsx"); var JSXParser = acorn.Parser.extend(jsx()); JSXParser.parse("foo(<bar/>)"); ``` The `extend` method takes any number of plugin values, and returns a new `Parser` class that includes the extra parser logic provided by the plugins. ## Command line interface The `bin/acorn` utility can be used to parse a file from the command line. It accepts as arguments its input file and the following options: - `--ecma3|--ecma5|--ecma6|--ecma7|--ecma8|--ecma9|--ecma10`: Sets the ECMAScript version to parse. Default is version 9. - `--module`: Sets the parsing mode to `"module"`. Is set to `"script"` otherwise. - `--locations`: Attaches a "loc" object to each node with "start" and "end" subobjects, each of which contains the one-based line and zero-based column numbers in `{line, column}` form. - `--allow-hash-bang`: If the code starts with the characters #! (as in a shellscript), the first line will be treated as a comment. - `--compact`: No whitespace is used in the AST output. - `--silent`: Do not output the AST, just return the exit status. - `--help`: Print the usage information and quit. The utility spits out the syntax tree as JSON data. ## Existing plugins - [`acorn-jsx`](https://github.com/RReverser/acorn-jsx): Parse [Facebook JSX syntax extensions](https://github.com/facebook/jsx) Plugins for ECMAScript proposals: - [`acorn-stage3`](https://github.com/acornjs/acorn-stage3): Parse most stage 3 proposals, bundling: - [`acorn-class-fields`](https://github.com/acornjs/acorn-class-fields): Parse [class fields proposal](https://github.com/tc39/proposal-class-fields) - [`acorn-import-meta`](https://github.com/acornjs/acorn-import-meta): Parse [import.meta proposal](https://github.com/tc39/proposal-import-meta) - [`acorn-private-methods`](https://github.com/acornjs/acorn-private-methods): parse [private methods, getters and setters proposal](https://github.com/tc39/proposal-private-methods)n # lodash.truncate v4.4.2 The [lodash](https://lodash.com/) method `_.truncate` exported as a [Node.js](https://nodejs.org/) module. ## Installation Using npm: ```bash $ {sudo -H} npm i -g npm $ npm i --save lodash.truncate ``` In Node.js: ```js var truncate = require('lodash.truncate'); ``` See the [documentation](https://lodash.com/docs#truncate) or [package source](https://github.com/lodash/lodash/blob/4.4.2-npm-packages/lodash.truncate) for more details. cipher-base === [](https://travis-ci.org/crypto-browserify/cipher-base) Abstract base class to inherit from if you want to create streams implementing the same api as node crypto streams. Requires you to implement 2 methods `_final` and `_update`. `_update` takes a buffer and should return a buffer, `_final` takes no arguments and should return a buffer. The constructor takes one argument and that is a string which if present switches it into hash mode, i.e. the object you get from crypto.createHash or crypto.createSign, this switches the name of the final method to be the string you passed instead of `final` and returns `this` from update. # lodash.merge v4.6.2 The [Lodash](https://lodash.com/) method `_.merge` exported as a [Node.js](https://nodejs.org/) module. ## Installation Using npm: ```bash $ {sudo -H} npm i -g npm $ npm i --save lodash.merge ``` In Node.js: ```js var merge = require('lodash.merge'); ``` See the [documentation](https://lodash.com/docs#merge) or [package source](https://github.com/lodash/lodash/blob/4.6.2-npm-packages/lodash.merge) for more details. Standard library ================ Standard library components for use with `tsc` (portable) and `asc` (assembly). Base configurations (.json) and definition files (.d.ts) are relevant to `tsc` only and not used by `asc`. ### Estraverse [](http://travis-ci.org/estools/estraverse) Estraverse ([estraverse](http://github.com/estools/estraverse)) is [ECMAScript](http://www.ecma-international.org/publications/standards/Ecma-262.htm) traversal functions from [esmangle project](http://github.com/estools/esmangle). ### Documentation You can find usage docs at [wiki page](https://github.com/estools/estraverse/wiki/Usage). ### Example Usage The following code will output all variables declared at the root of a file. ```javascript estraverse.traverse(ast, { enter: function (node, parent) { if (node.type == 'FunctionExpression' || node.type == 'FunctionDeclaration') return estraverse.VisitorOption.Skip; }, leave: function (node, parent) { if (node.type == 'VariableDeclarator') console.log(node.id.name); } }); ``` We can use `this.skip`, `this.remove` and `this.break` functions instead of using Skip, Remove and Break. ```javascript estraverse.traverse(ast, { enter: function (node) { this.break(); } }); ``` And estraverse provides `estraverse.replace` function. When returning node from `enter`/`leave`, current node is replaced with it. ```javascript result = estraverse.replace(tree, { enter: function (node) { // Replace it with replaced. if (node.type === 'Literal') return replaced; } }); ``` By passing `visitor.keys` mapping, we can extend estraverse traversing functionality. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Extending the existing traversing rules. keys: { // TargetNodeName: [ 'keys', 'containing', 'the', 'other', '**node**' ] TestExpression: ['argument'] } }); ``` By passing `visitor.fallback` option, we can control the behavior when encountering unknown nodes. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Iterating the child **nodes** of unknown nodes. fallback: 'iteration' }); ``` When `visitor.fallback` is a function, we can determine which keys to visit on each node. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Skip the `argument` property of each node fallback: function(node) { return Object.keys(node).filter(function(key) { return key !== 'argument'; }); } }); ``` ### License Copyright (C) 2012-2016 [Yusuke Suzuki](http://github.com/Constellation) (twitter: [@Constellation](http://twitter.com/Constellation)) and other contributors. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. [](https://codecov.io/gh/alepop/ed25519-hd-key) ed25519 HD Key ===== Key Derivation for `ed25519` ------------ [SLIP-0010](https://github.com/satoshilabs/slips/blob/master/slip-0010.md) - Specification Installation ------------ npm i --save ed25519-hd-key Usage ----- **example:** ```js const { derivePath, getMasterKeyFromSeed, getPublicKey } = require('ed25519-hd-key') const hexSeed = 'fffcf9f6f3f0edeae7e4e1dedbd8d5d2cfccc9c6c3c0bdbab7b4b1aeaba8a5a29f9c999693908d8a8784817e7b7875726f6c696663605d5a5754514e4b484542'; const { key, chainCode } = getMasterKeyFromSeed(hexSeed); console.log(key.toString('hex')) // => 2b4be7f19ee27bbf30c667b642d5f4aa69fd169872f8fc3059c08ebae2eb19e7 console.log(chainCode.toString('hex')); // => 90046a93de5380a72b5e45010748567d5ea02bbf6522f979e05c0d8d8ca9fffb const { key, chainCode} = derivePath("m/0'/2147483647'", hexSeed); console.log(key.toString('hex')) // => ea4f5bfe8694d8bb74b7b59404632fd5968b774ed545e810de9c32a4fb4192f4 console.log(chainCode.toString('hex')); // => 138f0b2551bcafeca6ff2aa88ba8ed0ed8de070841f0c4ef0165df8181eaad7f console.log(getPublicKey(key).toString('hex')) // => 005ba3b9ac6e90e83effcd25ac4e58a1365a9e35a3d3ae5eb07b9e4d90bcf7506d ``` Tests ----- ``` npm test ``` References ---------- [SLIP-0010](https://github.com/satoshilabs/slips/blob/master/slip-0010.md) [BIP-0032](https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki) [BIP-0044](https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki) # minipass A _very_ minimal implementation of a [PassThrough stream](https://nodejs.org/api/stream.html#stream_class_stream_passthrough) [It's very fast](https://docs.google.com/spreadsheets/d/1oObKSrVwLX_7Ut4Z6g3fZW-AX1j1-k6w-cDsrkaSbHM/edit#gid=0) for objects, strings, and buffers. Supports `pipe()`ing (including multi-`pipe()` and backpressure transmission), buffering data until either a `data` event handler or `pipe()` is added (so you don't lose the first chunk), and most other cases where PassThrough is a good idea. There is a `read()` method, but it's much more efficient to consume data from this stream via `'data'` events or by calling `pipe()` into some other stream. Calling `read()` requires the buffer to be flattened in some cases, which requires copying memory. There is also no `unpipe()` method. Once you start piping, there is no stopping it! If you set `objectMode: true` in the options, then whatever is written will be emitted. Otherwise, it'll do a minimal amount of Buffer copying to ensure proper Streams semantics when `read(n)` is called. `objectMode` can also be set by doing `stream.objectMode = true`, or by writing any non-string/non-buffer data. `objectMode` cannot be set to false once it is set. This is not a `through` or `through2` stream. It doesn't transform the data, it just passes it right through. If you want to transform the data, extend the class, and override the `write()` method. Once you're done transforming the data however you want, call `super.write()` with the transform output. For some examples of streams that extend Minipass in various ways, check out: - [minizlib](http://npm.im/minizlib) - [fs-minipass](http://npm.im/fs-minipass) - [tar](http://npm.im/tar) - [minipass-collect](http://npm.im/minipass-collect) - [minipass-flush](http://npm.im/minipass-flush) - [minipass-pipeline](http://npm.im/minipass-pipeline) - [tap](http://npm.im/tap) - [tap-parser](http://npm.im/tap-parser) - [treport](http://npm.im/treport) - [minipass-fetch](http://npm.im/minipass-fetch) - [pacote](http://npm.im/pacote) - [make-fetch-happen](http://npm.im/make-fetch-happen) - [cacache](http://npm.im/cacache) - [ssri](http://npm.im/ssri) - [npm-registry-fetch](http://npm.im/npm-registry-fetch) - [minipass-json-stream](http://npm.im/minipass-json-stream) - [minipass-sized](http://npm.im/minipass-sized) ## Differences from Node.js Streams There are several things that make Minipass streams different from (and in some ways superior to) Node.js core streams. Please read these caveats if you are familiar with node-core streams and intend to use Minipass streams in your programs. ### Timing Minipass streams are designed to support synchronous use-cases. Thus, data is emitted as soon as it is available, always. It is buffered until read, but no longer. Another way to look at it is that Minipass streams are exactly as synchronous as the logic that writes into them. This can be surprising if your code relies on `PassThrough.write()` always providing data on the next tick rather than the current one, or being able to call `resume()` and not have the entire buffer disappear immediately. However, without this synchronicity guarantee, there would be no way for Minipass to achieve the speeds it does, or support the synchronous use cases that it does. Simply put, waiting takes time. This non-deferring approach makes Minipass streams much easier to reason about, especially in the context of Promises and other flow-control mechanisms. ### No High/Low Water Marks Node.js core streams will optimistically fill up a buffer, returning `true` on all writes until the limit is hit, even if the data has nowhere to go. Then, they will not attempt to draw more data in until the buffer size dips below a minimum value. Minipass streams are much simpler. The `write()` method will return `true` if the data has somewhere to go (which is to say, given the timing guarantees, that the data is already there by the time `write()` returns). If the data has nowhere to go, then `write()` returns false, and the data sits in a buffer, to be drained out immediately as soon as anyone consumes it. ### Hazards of Buffering (or: Why Minipass Is So Fast) Since data written to a Minipass stream is immediately written all the way through the pipeline, and `write()` always returns true/false based on whether the data was fully flushed, backpressure is communicated immediately to the upstream caller. This minimizes buffering. Consider this case: ```js const {PassThrough} = require('stream') const p1 = new PassThrough({ highWaterMark: 1024 }) const p2 = new PassThrough({ highWaterMark: 1024 }) const p3 = new PassThrough({ highWaterMark: 1024 }) const p4 = new PassThrough({ highWaterMark: 1024 }) p1.pipe(p2).pipe(p3).pipe(p4) p4.on('data', () => console.log('made it through')) // this returns false and buffers, then writes to p2 on next tick (1) // p2 returns false and buffers, pausing p1, then writes to p3 on next tick (2) // p3 returns false and buffers, pausing p2, then writes to p4 on next tick (3) // p4 returns false and buffers, pausing p3, then emits 'data' and 'drain' // on next tick (4) // p3 sees p4's 'drain' event, and calls resume(), emitting 'resume' and // 'drain' on next tick (5) // p2 sees p3's 'drain', calls resume(), emits 'resume' and 'drain' on next tick (6) // p1 sees p2's 'drain', calls resume(), emits 'resume' and 'drain' on next // tick (7) p1.write(Buffer.alloc(2048)) // returns false ``` Along the way, the data was buffered and deferred at each stage, and multiple event deferrals happened, for an unblocked pipeline where it was perfectly safe to write all the way through! Furthermore, setting a `highWaterMark` of `1024` might lead someone reading the code to think an advisory maximum of 1KiB is being set for the pipeline. However, the actual advisory buffering level is the _sum_ of `highWaterMark` values, since each one has its own bucket. Consider the Minipass case: ```js const m1 = new Minipass() const m2 = new Minipass() const m3 = new Minipass() const m4 = new Minipass() m1.pipe(m2).pipe(m3).pipe(m4) m4.on('data', () => console.log('made it through')) // m1 is flowing, so it writes the data to m2 immediately // m2 is flowing, so it writes the data to m3 immediately // m3 is flowing, so it writes the data to m4 immediately // m4 is flowing, so it fires the 'data' event immediately, returns true // m4's write returned true, so m3 is still flowing, returns true // m3's write returned true, so m2 is still flowing, returns true // m2's write returned true, so m1 is still flowing, returns true // No event deferrals or buffering along the way! m1.write(Buffer.alloc(2048)) // returns true ``` It is extremely unlikely that you _don't_ want to buffer any data written, or _ever_ buffer data that can be flushed all the way through. Neither node-core streams nor Minipass ever fail to buffer written data, but node-core streams do a lot of unnecessary buffering and pausing. As always, the faster implementation is the one that does less stuff and waits less time to do it. ### Immediately emit `end` for empty streams (when not paused) If a stream is not paused, and `end()` is called before writing any data into it, then it will emit `end` immediately. If you have logic that occurs on the `end` event which you don't want to potentially happen immediately (for example, closing file descriptors, moving on to the next entry in an archive parse stream, etc.) then be sure to call `stream.pause()` on creation, and then `stream.resume()` once you are ready to respond to the `end` event. ### Emit `end` When Asked One hazard of immediately emitting `'end'` is that you may not yet have had a chance to add a listener. In order to avoid this hazard, Minipass streams safely re-emit the `'end'` event if a new listener is added after `'end'` has been emitted. Ie, if you do `stream.on('end', someFunction)`, and the stream has already emitted `end`, then it will call the handler right away. (You can think of this somewhat like attaching a new `.then(fn)` to a previously-resolved Promise.) To prevent calling handlers multiple times who would not expect multiple ends to occur, all listeners are removed from the `'end'` event whenever it is emitted. ### Impact of "immediate flow" on Tee-streams A "tee stream" is a stream piping to multiple destinations: ```js const tee = new Minipass() t.pipe(dest1) t.pipe(dest2) t.write('foo') // goes to both destinations ``` Since Minipass streams _immediately_ process any pending data through the pipeline when a new pipe destination is added, this can have surprising effects, especially when a stream comes in from some other function and may or may not have data in its buffer. ```js // WARNING! WILL LOSE DATA! const src = new Minipass() src.write('foo') src.pipe(dest1) // 'foo' chunk flows to dest1 immediately, and is gone src.pipe(dest2) // gets nothing! ``` The solution is to create a dedicated tee-stream junction that pipes to both locations, and then pipe to _that_ instead. ```js // Safe example: tee to both places const src = new Minipass() src.write('foo') const tee = new Minipass() tee.pipe(dest1) tee.pipe(dest2) src.pipe(tee) // tee gets 'foo', pipes to both locations ``` The same caveat applies to `on('data')` event listeners. The first one added will _immediately_ receive all of the data, leaving nothing for the second: ```js // WARNING! WILL LOSE DATA! const src = new Minipass() src.write('foo') src.on('data', handler1) // receives 'foo' right away src.on('data', handler2) // nothing to see here! ``` Using a dedicated tee-stream can be used in this case as well: ```js // Safe example: tee to both data handlers const src = new Minipass() src.write('foo') const tee = new Minipass() tee.on('data', handler1) tee.on('data', handler2) src.pipe(tee) ``` ## USAGE It's a stream! Use it like a stream and it'll most likely do what you want. ```js const Minipass = require('minipass') const mp = new Minipass(options) // optional: { encoding, objectMode } mp.write('foo') mp.pipe(someOtherStream) mp.end('bar') ``` ### OPTIONS * `encoding` How would you like the data coming _out_ of the stream to be encoded? Accepts any values that can be passed to `Buffer.toString()`. * `objectMode` Emit data exactly as it comes in. This will be flipped on by default if you write() something other than a string or Buffer at any point. Setting `objectMode: true` will prevent setting any encoding value. ### API Implements the user-facing portions of Node.js's `Readable` and `Writable` streams. ### Methods * `write(chunk, [encoding], [callback])` - Put data in. (Note that, in the base Minipass class, the same data will come out.) Returns `false` if the stream will buffer the next write, or true if it's still in "flowing" mode. * `end([chunk, [encoding]], [callback])` - Signal that you have no more data to write. This will queue an `end` event to be fired when all the data has been consumed. * `setEncoding(encoding)` - Set the encoding for data coming of the stream. This can only be done once. * `pause()` - No more data for a while, please. This also prevents `end` from being emitted for empty streams until the stream is resumed. * `resume()` - Resume the stream. If there's data in the buffer, it is all discarded. Any buffered events are immediately emitted. * `pipe(dest)` - Send all output to the stream provided. There is no way to unpipe. When data is emitted, it is immediately written to any and all pipe destinations. * `on(ev, fn)`, `emit(ev, fn)` - Minipass streams are EventEmitters. Some events are given special treatment, however. (See below under "events".) * `promise()` - Returns a Promise that resolves when the stream emits `end`, or rejects if the stream emits `error`. * `collect()` - Return a Promise that resolves on `end` with an array containing each chunk of data that was emitted, or rejects if the stream emits `error`. Note that this consumes the stream data. * `concat()` - Same as `collect()`, but concatenates the data into a single Buffer object. Will reject the returned promise if the stream is in objectMode, or if it goes into objectMode by the end of the data. * `read(n)` - Consume `n` bytes of data out of the buffer. If `n` is not provided, then consume all of it. If `n` bytes are not available, then it returns null. **Note** consuming streams in this way is less efficient, and can lead to unnecessary Buffer copying. * `destroy([er])` - Destroy the stream. If an error is provided, then an `'error'` event is emitted. If the stream has a `close()` method, and has not emitted a `'close'` event yet, then `stream.close()` will be called. Any Promises returned by `.promise()`, `.collect()` or `.concat()` will be rejected. After being destroyed, writing to the stream will emit an error. No more data will be emitted if the stream is destroyed, even if it was previously buffered. ### Properties * `bufferLength` Read-only. Total number of bytes buffered, or in the case of objectMode, the total number of objects. * `encoding` The encoding that has been set. (Setting this is equivalent to calling `setEncoding(enc)` and has the same prohibition against setting multiple times.) * `flowing` Read-only. Boolean indicating whether a chunk written to the stream will be immediately emitted. * `emittedEnd` Read-only. Boolean indicating whether the end-ish events (ie, `end`, `prefinish`, `finish`) have been emitted. Note that listening on any end-ish event will immediateyl re-emit it if it has already been emitted. * `writable` Whether the stream is writable. Default `true`. Set to `false` when `end()` * `readable` Whether the stream is readable. Default `true`. * `buffer` A [yallist](http://npm.im/yallist) linked list of chunks written to the stream that have not yet been emitted. (It's probably a bad idea to mess with this.) * `pipes` A [yallist](http://npm.im/yallist) linked list of streams that this stream is piping into. (It's probably a bad idea to mess with this.) * `destroyed` A getter that indicates whether the stream was destroyed. * `paused` True if the stream has been explicitly paused, otherwise false. * `objectMode` Indicates whether the stream is in `objectMode`. Once set to `true`, it cannot be set to `false`. ### Events * `data` Emitted when there's data to read. Argument is the data to read. This is never emitted while not flowing. If a listener is attached, that will resume the stream. * `end` Emitted when there's no more data to read. This will be emitted immediately for empty streams when `end()` is called. If a listener is attached, and `end` was already emitted, then it will be emitted again. All listeners are removed when `end` is emitted. * `prefinish` An end-ish event that follows the same logic as `end` and is emitted in the same conditions where `end` is emitted. Emitted after `'end'`. * `finish` An end-ish event that follows the same logic as `end` and is emitted in the same conditions where `end` is emitted. Emitted after `'prefinish'`. * `close` An indication that an underlying resource has been released. Minipass does not emit this event, but will defer it until after `end` has been emitted, since it throws off some stream libraries otherwise. * `drain` Emitted when the internal buffer empties, and it is again suitable to `write()` into the stream. * `readable` Emitted when data is buffered and ready to be read by a consumer. * `resume` Emitted when stream changes state from buffering to flowing mode. (Ie, when `resume` is called, `pipe` is called, or a `data` event listener is added.) ### Static Methods * `Minipass.isStream(stream)` Returns `true` if the argument is a stream, and false otherwise. To be considered a stream, the object must be either an instance of Minipass, or an EventEmitter that has either a `pipe()` method, or both `write()` and `end()` methods. (Pretty much any stream in node-land will return `true` for this.) ## EXAMPLES Here are some examples of things you can do with Minipass streams. ### simple "are you done yet" promise ```js mp.promise().then(() => { // stream is finished }, er => { // stream emitted an error }) ``` ### collecting ```js mp.collect().then(all => { // all is an array of all the data emitted // encoding is supported in this case, so // so the result will be a collection of strings if // an encoding is specified, or buffers/objects if not. // // In an async function, you may do // const data = await stream.collect() }) ``` ### collecting into a single blob This is a bit slower because it concatenates the data into one chunk for you, but if you're going to do it yourself anyway, it's convenient this way: ```js mp.concat().then(onebigchunk => { // onebigchunk is a string if the stream // had an encoding set, or a buffer otherwise. }) ``` ### iteration You can iterate over streams synchronously or asynchronously in platforms that support it. Synchronous iteration will end when the currently available data is consumed, even if the `end` event has not been reached. In string and buffer mode, the data is concatenated, so unless multiple writes are occurring in the same tick as the `read()`, sync iteration loops will generally only have a single iteration. To consume chunks in this way exactly as they have been written, with no flattening, create the stream with the `{ objectMode: true }` option. ```js const mp = new Minipass({ objectMode: true }) mp.write('a') mp.write('b') for (let letter of mp) { console.log(letter) // a, b } mp.write('c') mp.write('d') for (let letter of mp) { console.log(letter) // c, d } mp.write('e') mp.end() for (let letter of mp) { console.log(letter) // e } for (let letter of mp) { console.log(letter) // nothing } ``` Asynchronous iteration will continue until the end event is reached, consuming all of the data. ```js const mp = new Minipass({ encoding: 'utf8' }) // some source of some data let i = 5 const inter = setInterval(() => { if (i-- > 0) mp.write(Buffer.from('foo\n', 'utf8')) else { mp.end() clearInterval(inter) } }, 100) // consume the data with asynchronous iteration async function consume () { for await (let chunk of mp) { console.log(chunk) } return 'ok' } consume().then(res => console.log(res)) // logs `foo\n` 5 times, and then `ok` ``` ### subclass that `console.log()`s everything written into it ```js class Logger extends Minipass { write (chunk, encoding, callback) { console.log('WRITE', chunk, encoding) return super.write(chunk, encoding, callback) } end (chunk, encoding, callback) { console.log('END', chunk, encoding) return super.end(chunk, encoding, callback) } } someSource.pipe(new Logger()).pipe(someDest) ``` ### same thing, but using an inline anonymous class ```js // js classes are fun someSource .pipe(new (class extends Minipass { emit (ev, ...data) { // let's also log events, because debugging some weird thing console.log('EMIT', ev) return super.emit(ev, ...data) } write (chunk, encoding, callback) { console.log('WRITE', chunk, encoding) return super.write(chunk, encoding, callback) } end (chunk, encoding, callback) { console.log('END', chunk, encoding) return super.end(chunk, encoding, callback) } })) .pipe(someDest) ``` ### subclass that defers 'end' for some reason ```js class SlowEnd extends Minipass { emit (ev, ...args) { if (ev === 'end') { console.log('going to end, hold on a sec') setTimeout(() => { console.log('ok, ready to end now') super.emit('end', ...args) }, 100) } else { return super.emit(ev, ...args) } } } ``` ### transform that creates newline-delimited JSON ```js class NDJSONEncode extends Minipass { write (obj, cb) { try { // JSON.stringify can throw, emit an error on that return super.write(JSON.stringify(obj) + '\n', 'utf8', cb) } catch (er) { this.emit('error', er) } } end (obj, cb) { if (typeof obj === 'function') { cb = obj obj = undefined } if (obj !== undefined) { this.write(obj) } return super.end(cb) } } ``` ### transform that parses newline-delimited JSON ```js class NDJSONDecode extends Minipass { constructor (options) { // always be in object mode, as far as Minipass is concerned super({ objectMode: true }) this._jsonBuffer = '' } write (chunk, encoding, cb) { if (typeof chunk === 'string' && typeof encoding === 'string' && encoding !== 'utf8') { chunk = Buffer.from(chunk, encoding).toString() } else if (Buffer.isBuffer(chunk)) chunk = chunk.toString() } if (typeof encoding === 'function') { cb = encoding } const jsonData = (this._jsonBuffer + chunk).split('\n') this._jsonBuffer = jsonData.pop() for (let i = 0; i < jsonData.length; i++) { try { // JSON.parse can throw, emit an error on that super.write(JSON.parse(jsonData[i])) } catch (er) { this.emit('error', er) continue } } if (cb) cb() } } ``` # ci-info Get details about the current Continuous Integration environment. Please [open an issue](https://github.com/watson/ci-info/issues/new?template=ci-server-not-detected.md) if your CI server isn't properly detected :) [](https://www.npmjs.com/package/ci-info) [](https://travis-ci.org/watson/ci-info) [](https://github.com/feross/standard) ## Installation ```bash npm install ci-info --save ``` ## Usage ```js var ci = require('ci-info') if (ci.isCI) { console.log('The name of the CI server is:', ci.name) } else { console.log('This program is not running on a CI server') } ``` ## Supported CI tools Officially supported CI servers: | Name | Constant | isPR | |------|----------|------| | [AWS CodeBuild](https://aws.amazon.com/codebuild/) | `ci.CODEBUILD` | 🚫 | | [AppVeyor](http://www.appveyor.com) | `ci.APPVEYOR` | ✅ | | [Azure Pipelines](https://azure.microsoft.com/en-us/services/devops/pipelines/) | `ci.AZURE_PIPELINES` | ✅ | | [Bamboo](https://www.atlassian.com/software/bamboo) by Atlassian | `ci.BAMBOO` | 🚫 | | [Bitbucket Pipelines](https://bitbucket.org/product/features/pipelines) | `ci.BITBUCKET` | ✅ | | [Bitrise](https://www.bitrise.io/) | `ci.BITRISE` | ✅ | | [Buddy](https://buddy.works/) | `ci.BUDDY` | ✅ | | [Buildkite](https://buildkite.com) | `ci.BUILDKITE` | ✅ | | [CircleCI](http://circleci.com) | `ci.CIRCLE` | ✅ | | [Cirrus CI](https://cirrus-ci.org) | `ci.CIRRUS` | ✅ | | [Codeship](https://codeship.com) | `ci.CODESHIP` | 🚫 | | [Drone](https://drone.io) | `ci.DRONE` | ✅ | | [dsari](https://github.com/rfinnie/dsari) | `ci.DSARI` | 🚫 | | [GitLab CI](https://about.gitlab.com/gitlab-ci/) | `ci.GITLAB` | 🚫 | | [GoCD](https://www.go.cd/) | `ci.GOCD` | 🚫 | | [Hudson](http://hudson-ci.org) | `ci.HUDSON` | 🚫 | | [Jenkins CI](https://jenkins-ci.org) | `ci.JENKINS` | ✅ | | [Magnum CI](https://magnum-ci.com) | `ci.MAGNUM` | 🚫 | | [Netlify CI](https://www.netlify.com/) | `ci.NETLIFY` | ✅ | | [Sail CI](https://sail.ci/) | `ci.SAIL` | ✅ | | [Semaphore](https://semaphoreci.com) | `ci.SEMAPHORE` | ✅ | | [Shippable](https://www.shippable.com/) | `ci.SHIPPABLE` | ✅ | | [Solano CI](https://www.solanolabs.com/) | `ci.SOLANO` | ✅ | | [Strider CD](https://strider-cd.github.io/) | `ci.STRIDER` | 🚫 | | [TaskCluster](http://docs.taskcluster.net) | `ci.TASKCLUSTER` | 🚫 | | [TeamCity](https://www.jetbrains.com/teamcity/) by JetBrains | `ci.TEAMCITY` | 🚫 | | [Travis CI](http://travis-ci.org) | `ci.TRAVIS` | ✅ | ## API ### `ci.name` Returns a string containing name of the CI server the code is running on. If CI server is not detected, it returns `null`. Don't depend on the value of this string not to change for a specific vendor. If you find your self writing `ci.name === 'Travis CI'`, you most likely want to use `ci.TRAVIS` instead. ### `ci.isCI` Returns a boolean. Will be `true` if the code is running on a CI server, otherwise `false`. Some CI servers not listed here might still trigger the `ci.isCI` boolean to be set to `true` if they use certain vendor neutral environment variables. In those cases `ci.name` will be `null` and no vendor specific boolean will be set to `true`. ### `ci.isPR` Returns a boolean if PR detection is supported for the current CI server. Will be `true` if a PR is being tested, otherwise `false`. If PR detection is not supported for the current CI server, the value will be `null`. ### `ci.<VENDOR-CONSTANT>` A vendor specific boolean constant is exposed for each support CI vendor. A constant will be `true` if the code is determined to run on the given CI server, otherwise `false`. Examples of vendor constants are `ci.TRAVIS` or `ci.APPVEYOR`. For a complete list, see the support table above. Deprecated vendor constants that will be removed in the next major release: - `ci.TDDIUM` (Solano CI) This have been renamed `ci.SOLANO` ## License [MIT](LICENSE) ## Follow Redirects Drop-in replacement for Nodes `http` and `https` that automatically follows redirects. [](https://www.npmjs.com/package/follow-redirects) [](https://travis-ci.org/follow-redirects/follow-redirects) [](https://coveralls.io/r/follow-redirects/follow-redirects?branch=master) [](https://david-dm.org/follow-redirects/follow-redirects) [](https://www.npmjs.com/package/follow-redirects) `follow-redirects` provides [request](https://nodejs.org/api/http.html#http_http_request_options_callback) and [get](https://nodejs.org/api/http.html#http_http_get_options_callback) methods that behave identically to those found on the native [http](https://nodejs.org/api/http.html#http_http_request_options_callback) and [https](https://nodejs.org/api/https.html#https_https_request_options_callback) modules, with the exception that they will seamlessly follow redirects. ```javascript var http = require('follow-redirects').http; var https = require('follow-redirects').https; http.get('http://bit.ly/900913', function (response) { response.on('data', function (chunk) { console.log(chunk); }); }).on('error', function (err) { console.error(err); }); ``` You can inspect the final redirected URL through the `responseUrl` property on the `response`. If no redirection happened, `responseUrl` is the original request URL. ```javascript https.request({ host: 'bitly.com', path: '/UHfDGO', }, function (response) { console.log(response.responseUrl); // 'http://duckduckgo.com/robots.txt' }); ``` ## Options ### Global options Global options are set directly on the `follow-redirects` module: ```javascript var followRedirects = require('follow-redirects'); followRedirects.maxRedirects = 10; followRedirects.maxBodyLength = 20 * 1024 * 1024; // 20 MB ``` The following global options are supported: - `maxRedirects` (default: `21`) – sets the maximum number of allowed redirects; if exceeded, an error will be emitted. - `maxBodyLength` (default: 10MB) – sets the maximum size of the request body; if exceeded, an error will be emitted. ### Per-request options Per-request options are set by passing an `options` object: ```javascript var url = require('url'); var followRedirects = require('follow-redirects'); var options = url.parse('http://bit.ly/900913'); options.maxRedirects = 10; http.request(options); ``` In addition to the [standard HTTP](https://nodejs.org/api/http.html#http_http_request_options_callback) and [HTTPS options](https://nodejs.org/api/https.html#https_https_request_options_callback), the following per-request options are supported: - `followRedirects` (default: `true`) – whether redirects should be followed. - `maxRedirects` (default: `21`) – sets the maximum number of allowed redirects; if exceeded, an error will be emitted. - `maxBodyLength` (default: 10MB) – sets the maximum size of the request body; if exceeded, an error will be emitted. - `agents` (default: `undefined`) – sets the `agent` option per protocol, since HTTP and HTTPS use different agents. Example value: `{ http: new http.Agent(), https: new https.Agent() }` - `trackRedirects` (default: `false`) – whether to store the redirected response details into the `redirects` array on the response object. ### Advanced usage By default, `follow-redirects` will use the Node.js default implementations of [`http`](https://nodejs.org/api/http.html) and [`https`](https://nodejs.org/api/https.html). To enable features such as caching and/or intermediate request tracking, you might instead want to wrap `follow-redirects` around custom protocol implementations: ```javascript var followRedirects = require('follow-redirects').wrap({ http: require('your-custom-http'), https: require('your-custom-https'), }); ``` Such custom protocols only need an implementation of the `request` method. ## Browserify Usage Due to the way `XMLHttpRequest` works, the `browserify` versions of `http` and `https` already follow redirects. If you are *only* targeting the browser, then this library has little value for you. If you want to write cross platform code for node and the browser, `follow-redirects` provides a great solution for making the native node modules behave the same as they do in browserified builds in the browser. To avoid bundling unnecessary code you should tell browserify to swap out `follow-redirects` with the standard modules when bundling. To make this easier, you need to change how you require the modules: ```javascript var http = require('follow-redirects/http'); var https = require('follow-redirects/https'); ``` You can then replace `follow-redirects` in your browserify configuration like so: ```javascript "browser": { "follow-redirects/http" : "http", "follow-redirects/https" : "https" } ``` The `browserify-http` module has not kept pace with node development, and no long behaves identically to the native module when running in the browser. If you are experiencing problems, you may want to check out [browserify-http-2](https://www.npmjs.com/package/http-browserify-2). It is more actively maintained and attempts to address a few of the shortcomings of `browserify-http`. In that case, your browserify config should look something like this: ```javascript "browser": { "follow-redirects/http" : "browserify-http-2/http", "follow-redirects/https" : "browserify-http-2/https" } ``` ## Contributing Pull Requests are always welcome. Please [file an issue](https://github.com/follow-redirects/follow-redirects/issues) detailing your proposal before you invest your valuable time. Additional features and bug fixes should be accompanied by tests. You can run the test suite locally with a simple `npm test` command. ## Debug Logging `follow-redirects` uses the excellent [debug](https://www.npmjs.com/package/debug) for logging. To turn on logging set the environment variable `DEBUG=follow-redirects` for debug output from just this module. When running the test suite it is sometimes advantageous to set `DEBUG=*` to see output from the express server as well. ## Authors - Olivier Lalonde (olalonde@gmail.com) - James Talmage (james@talmage.io) - [Ruben Verborgh](https://ruben.verborgh.org/) ## License [https://github.com/follow-redirects/follow-redirects/blob/master/LICENSE](MIT License) # which Like the unix `which` utility. Finds the first instance of a specified executable in the PATH environment variable. Does not cache the results, so `hash -r` is not needed when the PATH changes. ## USAGE ```javascript var which = require('which') // async usage which('node', function (er, resolvedPath) { // er is returned if no "node" is found on the PATH // if it is found, then the absolute path to the exec is returned }) // or promise which('node').then(resolvedPath => { ... }).catch(er => { ... not found ... }) // sync usage // throws if not found var resolved = which.sync('node') // if nothrow option is used, returns null if not found resolved = which.sync('node', {nothrow: true}) // Pass options to override the PATH and PATHEXT environment vars. which('node', { path: someOtherPath }, function (er, resolved) { if (er) throw er console.log('found at %j', resolved) }) ``` ## CLI USAGE Same as the BSD `which(1)` binary. ``` usage: which [-as] program ... ``` ## OPTIONS You may pass an options object as the second argument. - `path`: Use instead of the `PATH` environment variable. - `pathExt`: Use instead of the `PATHEXT` environment variable. - `all`: Return all matches, instead of just the first one. Note that this means the function returns an array of strings instead of a single string. # json-buffer JSON functions that can convert buffers! [](http://travis-ci.org/dominictarr/json-buffer) [](https://ci.testling.com/dominictarr/json-buffer) JSON mangles buffers by converting to an array... which isn't helpful. json-buffers converts to base64 instead, and deconverts base64 to a buffer. ``` js var JSONB = require('json-buffer') var Buffer = require('buffer').Buffer var str = JSONB.stringify(new Buffer('hello there!')) console.log(JSONB.parse(str)) //GET a BUFFER back ``` ## License MIT # readable-stream ***Node.js core streams for userland*** [](https://travis-ci.com/nodejs/readable-stream) [](https://nodei.co/npm/readable-stream/) [](https://nodei.co/npm/readable-stream/) [](https://saucelabs.com/u/readabe-stream) ```bash npm install --save readable-stream ``` This package is a mirror of the streams implementations in Node.js. Full documentation may be found on the [Node.js website](https://nodejs.org/dist/v10.19.0/docs/api/stream.html). If you want to guarantee a stable streams base, regardless of what version of Node you, or the users of your libraries are using, use **readable-stream** *only* and avoid the *"stream"* module in Node-core, for background see [this blogpost](http://r.va.gg/2014/06/why-i-dont-use-nodes-core-stream-module.html). As of version 2.0.0 **readable-stream** uses semantic versioning. ## Version 3.x.x v3.x.x of `readable-stream` is a cut from Node 10. This version supports Node 6, 8, and 10, as well as evergreen browsers, IE 11 and latest Safari. The breaking changes introduced by v3 are composed by the combined breaking changes in [Node v9](https://nodejs.org/en/blog/release/v9.0.0/) and [Node v10](https://nodejs.org/en/blog/release/v10.0.0/), as follows: 1. Error codes: https://github.com/nodejs/node/pull/13310, https://github.com/nodejs/node/pull/13291, https://github.com/nodejs/node/pull/16589, https://github.com/nodejs/node/pull/15042, https://github.com/nodejs/node/pull/15665, https://github.com/nodejs/readable-stream/pull/344 2. 'readable' have precedence over flowing https://github.com/nodejs/node/pull/18994 3. make virtual methods errors consistent https://github.com/nodejs/node/pull/18813 4. updated streams error handling https://github.com/nodejs/node/pull/18438 5. writable.end should return this. https://github.com/nodejs/node/pull/18780 6. readable continues to read when push('') https://github.com/nodejs/node/pull/18211 7. add custom inspect to BufferList https://github.com/nodejs/node/pull/17907 8. always defer 'readable' with nextTick https://github.com/nodejs/node/pull/17979 ## Version 2.x.x v2.x.x of `readable-stream` is a cut of the stream module from Node 8 (there have been no semver-major changes from Node 4 to 8). This version supports all Node.js versions from 0.8, as well as evergreen browsers and IE 10 & 11. ### Big Thanks Cross-browser Testing Platform and Open Source <3 Provided by [Sauce Labs][sauce] # Usage You can swap your `require('stream')` with `require('readable-stream')` without any changes, if you are just using one of the main classes and functions. ```js const { Readable, Writable, Transform, Duplex, pipeline, finished } = require('readable-stream') ```` Note that `require('stream')` will return `Stream`, while `require('readable-stream')` will return `Readable`. We discourage using whatever is exported directly, but rather use one of the properties as shown in the example above. # Streams Working Group `readable-stream` is maintained by the Streams Working Group, which oversees the development and maintenance of the Streams API within Node.js. The responsibilities of the Streams Working Group include: * Addressing stream issues on the Node.js issue tracker. * Authoring and editing stream documentation within the Node.js project. * Reviewing changes to stream subclasses within the Node.js project. * Redirecting changes to streams from the Node.js project to this project. * Assisting in the implementation of stream providers within Node.js. * Recommending versions of `readable-stream` to be included in Node.js. * Messaging about the future of streams to give the community advance notice of changes. <a name="members"></a> ## Team Members * **Calvin Metcalf** ([@calvinmetcalf](https://github.com/calvinmetcalf)) &lt;calvin.metcalf@gmail.com&gt; - Release GPG key: F3EF5F62A87FC27A22E643F714CE4FF5015AA242 * **Mathias Buus** ([@mafintosh](https://github.com/mafintosh)) &lt;mathiasbuus@gmail.com&gt; * **Matteo Collina** ([@mcollina](https://github.com/mcollina)) &lt;matteo.collina@gmail.com&gt; - Release GPG key: 3ABC01543F22DD2239285CDD818674489FBC127E * **Irina Shestak** ([@lrlna](https://github.com/lrlna)) &lt;shestak.irina@gmail.com&gt; * **Yoshua Wyuts** ([@yoshuawuyts](https://github.com/yoshuawuyts)) &lt;yoshuawuyts@gmail.com&gt; [sauce]: https://saucelabs.com <h1 align=center> <a href="http://chaijs.com" title="Chai Documentation"> <img alt="ChaiJS" src="http://chaijs.com/img/chai-logo.png"/> type-detect </a> </h1> <br> <p align=center> Improved typeof detection for <a href="http://nodejs.org">node</a> and the browser. </p> <p align=center> <a href="./LICENSE"> <img alt="license:mit" src="https://img.shields.io/badge/license-mit-green.svg?style=flat-square" /> </a> <a href="https://github.com/chaijs/type-detect/releases"> <img alt="tag:?" src="https://img.shields.io/github/tag/chaijs/type-detect.svg?style=flat-square" /> </a> <a href="https://travis-ci.org/chaijs/type-detect"> <img alt="build:?" src="https://img.shields.io/travis/chaijs/type-detect/master.svg?style=flat-square" /> </a> <a href="https://coveralls.io/r/chaijs/type-detect"> <img alt="coverage:?" src="https://img.shields.io/coveralls/chaijs/type-detect/master.svg?style=flat-square" /> </a> <a href="https://www.npmjs.com/packages/type-detect"> <img alt="npm:?" src="https://img.shields.io/npm/v/type-detect.svg?style=flat-square" /> </a> <a href="https://www.npmjs.com/packages/type-detect"> <img alt="dependencies:?" src="https://img.shields.io/npm/dm/type-detect.svg?style=flat-square" /> </a> <a href=""> <img alt="devDependencies:?" src="https://img.shields.io/david/chaijs/type-detect.svg?style=flat-square" /> </a> <br/> <table> <tr><th colspan=6>Supported Browsers</th></tr> <tr> <th align=center><img src="https://camo.githubusercontent.com/ab586f11dfcb49bf5f2c2fa9adadc5e857de122a/687474703a2f2f73766773686172652e636f6d2f692f3278532e737667" alt=""> Chrome</th> <th align=center><img src="https://camo.githubusercontent.com/98cca3108c18dcfaa62667b42046540c6822cdac/687474703a2f2f73766773686172652e636f6d2f692f3279352e737667" alt=""> Edge</th> <th align=center><img src="https://camo.githubusercontent.com/acdcb09840a9e1442cbaf1b684f95ab3c3f41cf4/687474703a2f2f73766773686172652e636f6d2f692f3279462e737667" alt=""> Firefox</th> <th align=center><img src="https://camo.githubusercontent.com/728f8cb0bee9ed58ab85e39266f1152c53e0dffd/687474703a2f2f73766773686172652e636f6d2f692f3278342e737667" alt=""> Safari</th> <th align=center><img src="https://camo.githubusercontent.com/96a2317034dee0040d0a762e7a30c3c650c45aac/687474703a2f2f73766773686172652e636f6d2f692f3279532e737667" alt=""> IE</th> </tr><tr> <td align=center>✅</td> <td align=center>✅</td> <td align=center>✅</td> <td align=center>✅</td> <td align=center>9, 10, 11</td> </tr> </table> <br> <a href="https://chai-slack.herokuapp.com/"> <img alt="Join the Slack chat" src="https://img.shields.io/badge/slack-join%20chat-E2206F.svg?style=flat-square" /> </a> <a href="https://gitter.im/chaijs/chai"> <img alt="Join the Gitter chat" src="https://img.shields.io/badge/gitter-join%20chat-D0104D.svg?style=flat-square" /> </a> </p> ## What is Type-Detect? Type Detect is a module which you can use to detect the type of a given object. It returns a string representation of the object's type, either using [`typeof`](http://www.ecma-international.org/ecma-262/6.0/index.html#sec-typeof-operator) or [`@@toStringTag`](http://www.ecma-international.org/ecma-262/6.0/index.html#sec-symbol.tostringtag). It also normalizes some object names for consistency among browsers. ## Why? The `typeof` operator will only specify primitive values; everything else is `"object"` (including `null`, arrays, regexps, etc). Many developers use `Object.prototype.toString()` - which is a fine alternative and returns many more types (null returns `[object Null]`, Arrays as `[object Array]`, regexps as `[object RegExp]` etc). Sadly, `Object.prototype.toString` is slow, and buggy. By slow - we mean it is slower than `typeof`. By buggy - we mean that some values (like Promises, the global object, iterators, dataviews, a bunch of HTML elements) all report different things in different browsers. `type-detect` fixes all of the shortcomings with `Object.prototype.toString`. We have extra code to speed up checks of JS and DOM objects, as much as 20-30x faster for some values. `type-detect` also fixes any consistencies with these objects. ## Installation ### Node.js `type-detect` is available on [npm](http://npmjs.org). To install it, type: $ npm install type-detect ### Browsers You can also use it within the browser; install via npm and use the `type-detect.js` file found within the download. For example: ```html <script src="./node_modules/type-detect/type-detect.js"></script> ``` ## Usage The primary export of `type-detect` is function that can serve as a replacement for `typeof`. The results of this function will be more specific than that of native `typeof`. ```js var type = require('type-detect'); ``` #### array ```js assert(type([]) === 'Array'); assert(type(new Array()) === 'Array'); ``` #### regexp ```js assert(type(/a-z/gi) === 'RegExp'); assert(type(new RegExp('a-z')) === 'RegExp'); ``` #### function ```js assert(type(function () {}) === 'function'); ``` #### arguments ```js (function () { assert(type(arguments) === 'Arguments'); })(); ``` #### date ```js assert(type(new Date) === 'Date'); ``` #### number ```js assert(type(1) === 'number'); assert(type(1.234) === 'number'); assert(type(-1) === 'number'); assert(type(-1.234) === 'number'); assert(type(Infinity) === 'number'); assert(type(NaN) === 'number'); assert(type(new Number(1)) === 'Number'); // note - the object version has a capital N ``` #### string ```js assert(type('hello world') === 'string'); assert(type(new String('hello')) === 'String'); // note - the object version has a capital S ``` #### null ```js assert(type(null) === 'null'); assert(type(undefined) !== 'null'); ``` #### undefined ```js assert(type(undefined) === 'undefined'); assert(type(null) !== 'undefined'); ``` #### object ```js var Noop = function () {}; assert(type({}) === 'Object'); assert(type(Noop) !== 'Object'); assert(type(new Noop) === 'Object'); assert(type(new Object) === 'Object'); ``` #### ECMA6 Types All new ECMAScript 2015 objects are also supported, such as Promises and Symbols: ```js assert(type(new Map() === 'Map'); assert(type(new WeakMap()) === 'WeakMap'); assert(type(new Set()) === 'Set'); assert(type(new WeakSet()) === 'WeakSet'); assert(type(Symbol()) === 'symbol'); assert(type(new Promise(callback) === 'Promise'); assert(type(new Int8Array()) === 'Int8Array'); assert(type(new Uint8Array()) === 'Uint8Array'); assert(type(new UInt8ClampedArray()) === 'Uint8ClampedArray'); assert(type(new Int16Array()) === 'Int16Array'); assert(type(new Uint16Array()) === 'Uint16Array'); assert(type(new Int32Array()) === 'Int32Array'); assert(type(new UInt32Array()) === 'Uint32Array'); assert(type(new Float32Array()) === 'Float32Array'); assert(type(new Float64Array()) === 'Float64Array'); assert(type(new ArrayBuffer()) === 'ArrayBuffer'); assert(type(new DataView(arrayBuffer)) === 'DataView'); ``` Also, if you use `Symbol.toStringTag` to change an Objects return value of the `toString()` Method, `type()` will return this value, e.g: ```js var myObject = {}; myObject[Symbol.toStringTag] = 'myCustomType'; assert(type(myObject) === 'myCustomType'); ``` <p align="center"> <img width="250" src="/yargs-logo.png"> </p> <h1 align="center"> Yargs </h1> <p align="center"> <b >Yargs be a node.js library fer hearties tryin' ter parse optstrings</b> </p> <br> [![Build Status][travis-image]][travis-url] [![NPM version][npm-image]][npm-url] [![js-standard-style][standard-image]][standard-url] [![Coverage][coverage-image]][coverage-url] [![Conventional Commits][conventional-commits-image]][conventional-commits-url] [![Slack][slack-image]][slack-url] ## Description : Yargs helps you build interactive command line tools, by parsing arguments and generating an elegant user interface. It gives you: * commands and (grouped) options (`my-program.js serve --port=5000`). * a dynamically generated help menu based on your arguments. > <img width="400" src="/screen.png"> * bash-completion shortcuts for commands and options. * and [tons more](/docs/api.md). ## Installation Stable version: ```bash npm i yargs ``` Bleeding edge version with the most recent features: ```bash npm i yargs@next ``` ## Usage : ### Simple Example ```javascript #!/usr/bin/env node const {argv} = require('yargs') if (argv.ships > 3 && argv.distance < 53.5) { console.log('Plunder more riffiwobbles!') } else { console.log('Retreat from the xupptumblers!') } ``` ```bash $ ./plunder.js --ships=4 --distance=22 Plunder more riffiwobbles! $ ./plunder.js --ships 12 --distance 98.7 Retreat from the xupptumblers! ``` ### Complex Example ```javascript #!/usr/bin/env node require('yargs') // eslint-disable-line .command('serve [port]', 'start the server', (yargs) => { yargs .positional('port', { describe: 'port to bind on', default: 5000 }) }, (argv) => { if (argv.verbose) console.info(`start server on :${argv.port}`) serve(argv.port) }) .option('verbose', { alias: 'v', type: 'boolean', description: 'Run with verbose logging' }) .argv ``` Run the example above with `--help` to see the help for the application. ## TypeScript yargs has type definitions at [@types/yargs][type-definitions]. ``` npm i @types/yargs --save-dev ``` See usage examples in [docs](/docs/typescript.md). ## Webpack See usage examples of yargs with webpack in [docs](/docs/webpack.md). ## Community : Having problems? want to contribute? join our [community slack](http://devtoolscommunity.herokuapp.com). ## Documentation : ### Table of Contents * [Yargs' API](/docs/api.md) * [Examples](/docs/examples.md) * [Parsing Tricks](/docs/tricks.md) * [Stop the Parser](/docs/tricks.md#stop) * [Negating Boolean Arguments](/docs/tricks.md#negate) * [Numbers](/docs/tricks.md#numbers) * [Arrays](/docs/tricks.md#arrays) * [Objects](/docs/tricks.md#objects) * [Quotes](/docs/tricks.md#quotes) * [Advanced Topics](/docs/advanced.md) * [Composing Your App Using Commands](/docs/advanced.md#commands) * [Building Configurable CLI Apps](/docs/advanced.md#configuration) * [Customizing Yargs' Parser](/docs/advanced.md#customizing) * [Contributing](/contributing.md) [travis-url]: https://travis-ci.org/yargs/yargs [travis-image]: https://img.shields.io/travis/yargs/yargs/master.svg [npm-url]: https://www.npmjs.com/package/yargs [npm-image]: https://img.shields.io/npm/v/yargs.svg [standard-image]: https://img.shields.io/badge/code%20style-standard-brightgreen.svg [standard-url]: http://standardjs.com/ [conventional-commits-image]: https://img.shields.io/badge/Conventional%20Commits-1.0.0-yellow.svg [conventional-commits-url]: https://conventionalcommits.org/ [slack-image]: http://devtoolscommunity.herokuapp.com/badge.svg [slack-url]: http://devtoolscommunity.herokuapp.com [type-definitions]: https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/yargs [coverage-image]: https://img.shields.io/nycrc/yargs/yargs [coverage-url]: https://github.com/yargs/yargs/blob/master/.nycrc # ESLint Scope ESLint Scope is the [ECMAScript](http://www.ecma-international.org/publications/standards/Ecma-262.htm) scope analyzer used in ESLint. It is a fork of [escope](http://github.com/estools/escope). ## Usage Install: ``` npm i eslint-scope --save ``` Example: ```js var eslintScope = require('eslint-scope'); var espree = require('espree'); var estraverse = require('estraverse'); var ast = espree.parse(code); var scopeManager = eslintScope.analyze(ast); var currentScope = scopeManager.acquire(ast); // global scope estraverse.traverse(ast, { enter: function(node, parent) { // do stuff if (/Function/.test(node.type)) { currentScope = scopeManager.acquire(node); // get current function scope } }, leave: function(node, parent) { if (/Function/.test(node.type)) { currentScope = currentScope.upper; // set to parent scope } // do stuff } }); ``` ## Contributing Issues and pull requests will be triaged and responded to as quickly as possible. We operate under the [ESLint Contributor Guidelines](http://eslint.org/docs/developer-guide/contributing), so please be sure to read them before contributing. If you're not sure where to dig in, check out the [issues](https://github.com/eslint/eslint-scope/issues). ## Build Commands * `npm test` - run all linting and tests * `npm run lint` - run all linting ## License ESLint Scope is licensed under a permissive BSD 2-clause license. # regexpp [](https://www.npmjs.com/package/regexpp) [](http://www.npmtrends.com/regexpp) [](https://github.com/mysticatea/regexpp/actions) [](https://codecov.io/gh/mysticatea/regexpp) [](https://david-dm.org/mysticatea/regexpp) A regular expression parser for ECMAScript. ## 💿 Installation ```bash $ npm install regexpp ``` - require Node.js 8 or newer. ## 📖 Usage ```ts import { AST, RegExpParser, RegExpValidator, RegExpVisitor, parseRegExpLiteral, validateRegExpLiteral, visitRegExpAST } from "regexpp" ``` ### parseRegExpLiteral(source, options?) Parse a given regular expression literal then make AST object. This is equivalent to `new RegExpParser(options).parseLiteral(source)`. - **Parameters:** - `source` (`string | RegExp`) The source code to parse. - `options?` ([`RegExpParser.Options`]) The options to parse. - **Return:** - The AST of the regular expression. ### validateRegExpLiteral(source, options?) Validate a given regular expression literal. This is equivalent to `new RegExpValidator(options).validateLiteral(source)`. - **Parameters:** - `source` (`string`) The source code to validate. - `options?` ([`RegExpValidator.Options`]) The options to validate. ### visitRegExpAST(ast, handlers) Visit each node of a given AST. This is equivalent to `new RegExpVisitor(handlers).visit(ast)`. - **Parameters:** - `ast` ([`AST.Node`]) The AST to visit. - `handlers` ([`RegExpVisitor.Handlers`]) The callbacks. ### RegExpParser #### new RegExpParser(options?) - **Parameters:** - `options?` ([`RegExpParser.Options`]) The options to parse. #### parser.parseLiteral(source, start?, end?) Parse a regular expression literal. - **Parameters:** - `source` (`string`) The source code to parse. E.g. `"/abc/g"`. - `start?` (`number`) The start index in the source code. Default is `0`. - `end?` (`number`) The end index in the source code. Default is `source.length`. - **Return:** - The AST of the regular expression. #### parser.parsePattern(source, start?, end?, uFlag?) Parse a regular expression pattern. - **Parameters:** - `source` (`string`) The source code to parse. E.g. `"abc"`. - `start?` (`number`) The start index in the source code. Default is `0`. - `end?` (`number`) The end index in the source code. Default is `source.length`. - `uFlag?` (`boolean`) The flag to enable Unicode mode. - **Return:** - The AST of the regular expression pattern. #### parser.parseFlags(source, start?, end?) Parse a regular expression flags. - **Parameters:** - `source` (`string`) The source code to parse. E.g. `"gim"`. - `start?` (`number`) The start index in the source code. Default is `0`. - `end?` (`number`) The end index in the source code. Default is `source.length`. - **Return:** - The AST of the regular expression flags. ### RegExpValidator #### new RegExpValidator(options) - **Parameters:** - `options` ([`RegExpValidator.Options`]) The options to validate. #### validator.validateLiteral(source, start, end) Validate a regular expression literal. - **Parameters:** - `source` (`string`) The source code to validate. - `start?` (`number`) The start index in the source code. Default is `0`. - `end?` (`number`) The end index in the source code. Default is `source.length`. #### validator.validatePattern(source, start, end, uFlag) Validate a regular expression pattern. - **Parameters:** - `source` (`string`) The source code to validate. - `start?` (`number`) The start index in the source code. Default is `0`. - `end?` (`number`) The end index in the source code. Default is `source.length`. - `uFlag?` (`boolean`) The flag to enable Unicode mode. #### validator.validateFlags(source, start, end) Validate a regular expression flags. - **Parameters:** - `source` (`string`) The source code to validate. - `start?` (`number`) The start index in the source code. Default is `0`. - `end?` (`number`) The end index in the source code. Default is `source.length`. ### RegExpVisitor #### new RegExpVisitor(handlers) - **Parameters:** - `handlers` ([`RegExpVisitor.Handlers`]) The callbacks. #### visitor.visit(ast) Validate a regular expression literal. - **Parameters:** - `ast` ([`AST.Node`]) The AST to visit. ## 📰 Changelog - [GitHub Releases](https://github.com/mysticatea/regexpp/releases) ## 🍻 Contributing Welcome contributing! Please use GitHub's Issues/PRs. ### Development Tools - `npm test` runs tests and measures coverage. - `npm run build` compiles TypeScript source code to `index.js`, `index.js.map`, and `index.d.ts`. - `npm run clean` removes the temporary files which are created by `npm test` and `npm run build`. - `npm run lint` runs ESLint. - `npm run update:test` updates test fixtures. - `npm run update:ids` updates `src/unicode/ids.ts`. - `npm run watch` runs tests with `--watch` option. [`AST.Node`]: src/ast.ts#L4 [`RegExpParser.Options`]: src/parser.ts#L539 [`RegExpValidator.Options`]: src/validator.ts#L127 [`RegExpVisitor.Handlers`]: src/visitor.ts#L204 Overview [](https://travis-ci.org/lydell/js-tokens) ======== A regex that tokenizes JavaScript. ```js var jsTokens = require("js-tokens").default var jsString = "var foo=opts.foo;\n..." jsString.match(jsTokens) // ["var", " ", "foo", "=", "opts", ".", "foo", ";", "\n", ...] ``` Installation ============ `npm install js-tokens` ```js import jsTokens from "js-tokens" // or: var jsTokens = require("js-tokens").default ``` Usage ===== ### `jsTokens` ### A regex with the `g` flag that matches JavaScript tokens. The regex _always_ matches, even invalid JavaScript and the empty string. The next match is always directly after the previous. ### `var token = matchToToken(match)` ### ```js import {matchToToken} from "js-tokens" // or: var matchToToken = require("js-tokens").matchToToken ``` Takes a `match` returned by `jsTokens.exec(string)`, and returns a `{type: String, value: String}` object. The following types are available: - string - comment - regex - number - name - punctuator - whitespace - invalid Multi-line comments and strings also have a `closed` property indicating if the token was closed or not (see below). Comments and strings both come in several flavors. To distinguish them, check if the token starts with `//`, `/*`, `'`, `"` or `` ` ``. Names are ECMAScript IdentifierNames, that is, including both identifiers and keywords. You may use [is-keyword-js] to tell them apart. Whitespace includes both line terminators and other whitespace. [is-keyword-js]: https://github.com/crissdev/is-keyword-js ECMAScript support ================== The intention is to always support the latest ECMAScript version whose feature set has been finalized. If adding support for a newer version requires changes, a new version with a major verion bump will be released. Currently, ECMAScript 2018 is supported. Invalid code handling ===================== Unterminated strings are still matched as strings. JavaScript strings cannot contain (unescaped) newlines, so unterminated strings simply end at the end of the line. Unterminated template strings can contain unescaped newlines, though, so they go on to the end of input. Unterminated multi-line comments are also still matched as comments. They simply go on to the end of the input. Unterminated regex literals are likely matched as division and whatever is inside the regex. Invalid ASCII characters have their own capturing group. Invalid non-ASCII characters are treated as names, to simplify the matching of names (except unicode spaces which are treated as whitespace). Note: See also the [ES2018](#es2018) section. Regex literals may contain invalid regex syntax. They are still matched as regex literals. They may also contain repeated regex flags, to keep the regex simple. Strings may contain invalid escape sequences. Limitations =========== Tokenizing JavaScript using regexes—in fact, _one single regex_—won’t be perfect. But that’s not the point either. You may compare jsTokens with [esprima] by using `esprima-compare.js`. See `npm run esprima-compare`! [esprima]: http://esprima.org/ ### Template string interpolation ### Template strings are matched as single tokens, from the starting `` ` `` to the ending `` ` ``, including interpolations (whose tokens are not matched individually). Matching template string interpolations requires recursive balancing of `{` and `}`—something that JavaScript regexes cannot do. Only one level of nesting is supported. ### Division and regex literals collision ### Consider this example: ```js var g = 9.82 var number = bar / 2/g var regex = / 2/g ``` A human can easily understand that in the `number` line we’re dealing with division, and in the `regex` line we’re dealing with a regex literal. How come? Because humans can look at the whole code to put the `/` characters in context. A JavaScript regex cannot. It only sees forwards. (Well, ES2018 regexes can also look backwards. See the [ES2018](#es2018) section). When the `jsTokens` regex scans throught the above, it will see the following at the end of both the `number` and `regex` rows: ```js / 2/g ``` It is then impossible to know if that is a regex literal, or part of an expression dealing with division. Here is a similar case: ```js foo /= 2/g foo(/= 2/g) ``` The first line divides the `foo` variable with `2/g`. The second line calls the `foo` function with the regex literal `/= 2/g`. Again, since `jsTokens` only sees forwards, it cannot tell the two cases apart. There are some cases where we _can_ tell division and regex literals apart, though. First off, we have the simple cases where there’s only one slash in the line: ```js var foo = 2/g foo /= 2 ``` Regex literals cannot contain newlines, so the above cases are correctly identified as division. Things are only problematic when there are more than one non-comment slash in a single line. Secondly, not every character is a valid regex flag. ```js var number = bar / 2/e ``` The above example is also correctly identified as division, because `e` is not a valid regex flag. I initially wanted to future-proof by allowing `[a-zA-Z]*` (any letter) as flags, but it is not worth it since it increases the amount of ambigous cases. So only the standard `g`, `m`, `i`, `y` and `u` flags are allowed. This means that the above example will be identified as division as long as you don’t rename the `e` variable to some permutation of `gmiyus` 1 to 6 characters long. Lastly, we can look _forward_ for information. - If the token following what looks like a regex literal is not valid after a regex literal, but is valid in a division expression, then the regex literal is treated as division instead. For example, a flagless regex cannot be followed by a string, number or name, but all of those three can be the denominator of a division. - Generally, if what looks like a regex literal is followed by an operator, the regex literal is treated as division instead. This is because regexes are seldomly used with operators (such as `+`, `*`, `&&` and `==`), but division could likely be part of such an expression. Please consult the regex source and the test cases for precise information on when regex or division is matched (should you need to know). In short, you could sum it up as: If the end of a statement looks like a regex literal (even if it isn’t), it will be treated as one. Otherwise it should work as expected (if you write sane code). ### ES2018 ### ES2018 added some nice regex improvements to the language. - [Unicode property escapes] should allow telling names and invalid non-ASCII characters apart without blowing up the regex size. - [Lookbehind assertions] should allow matching telling division and regex literals apart in more cases. - [Named capture groups] might simplify some things. These things would be nice to do, but are not critical. They probably have to wait until the oldest maintained Node.js LTS release supports those features. [Unicode property escapes]: http://2ality.com/2017/07/regexp-unicode-property-escapes.html [Lookbehind assertions]: http://2ality.com/2017/05/regexp-lookbehind-assertions.html [Named capture groups]: http://2ality.com/2017/05/regexp-named-capture-groups.html License ======= [MIT](LICENSE). # isobject [](https://www.npmjs.com/package/isobject) [](https://npmjs.org/package/isobject) [](https://travis-ci.org/jonschlinkert/isobject) Returns true if the value is an object and not an array or null. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install isobject --save ``` Use [is-plain-object](https://github.com/jonschlinkert/is-plain-object) if you want only objects that are created by the `Object` constructor. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install isobject ``` Install with [bower](http://bower.io/) ```sh $ bower install isobject ``` ## Usage ```js var isObject = require('isobject'); ``` **True** All of the following return `true`: ```js isObject({}); isObject(Object.create({})); isObject(Object.create(Object.prototype)); isObject(Object.create(null)); isObject({}); isObject(new Foo); isObject(/foo/); ``` **False** All of the following return `false`: ```js isObject(); isObject(function () {}); isObject(1); isObject([]); isObject(undefined); isObject(null); ``` ## Related projects You might also be interested in these projects: [merge-deep](https://www.npmjs.com/package/merge-deep): Recursively merge values in a javascript object. | [homepage](https://github.com/jonschlinkert/merge-deep) * [extend-shallow](https://www.npmjs.com/package/extend-shallow): Extend an object with the properties of additional objects. node.js/javascript util. | [homepage](https://github.com/jonschlinkert/extend-shallow) * [is-plain-object](https://www.npmjs.com/package/is-plain-object): Returns true if an object was created by the `Object` constructor. | [homepage](https://github.com/jonschlinkert/is-plain-object) * [kind-of](https://www.npmjs.com/package/kind-of): Get the native type of a value. | [homepage](https://github.com/jonschlinkert/kind-of) ## Contributing Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](https://github.com/jonschlinkert/isobject/issues/new). ## Building docs Generate readme and API documentation with [verb](https://github.com/verbose/verb): ```sh $ npm install verb && npm run docs ``` Or, if [verb](https://github.com/verbose/verb) is installed globally: ```sh $ verb ``` ## Running tests Install dev dependencies: ```sh $ npm install -d && npm test ``` ## Author **Jon Schlinkert** * [github/jonschlinkert](https://github.com/jonschlinkert) * [twitter/jonschlinkert](http://twitter.com/jonschlinkert) ## License Copyright © 2016, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT license](https://github.com/jonschlinkert/isobject/blob/master/LICENSE). *** _This file was generated by [verb](https://github.com/verbose/verb), v0.9.0, on April 25, 2016._ <a name="table"></a> # Table > Produces a string that represents array data in a text table. [](https://travis-ci.org/gajus/table) [](https://coveralls.io/github/gajus/table) [](https://www.npmjs.org/package/table) [](https://github.com/gajus/canonical) [](https://twitter.com/kuizinas) * [Table](#table) * [Features](#table-features) * [Install](#table-install) * [Usage](#table-usage) * [API](#table-api) * [table](#table-api-table-1) * [createStream](#table-api-createstream) * [getBorderCharacters](#table-api-getbordercharacters)  <a name="table-features"></a> ## Features * Works with strings containing [fullwidth](https://en.wikipedia.org/wiki/Halfwidth_and_fullwidth_forms) characters. * Works with strings containing [ANSI escape codes](https://en.wikipedia.org/wiki/ANSI_escape_code). * Configurable border characters. * Configurable content alignment per column. * Configurable content padding per column. * Configurable column width. * Text wrapping. <a name="table-install"></a> ## Install ```bash npm install table ``` [](https://www.buymeacoffee.com/gajus) [](https://www.patreon.com/gajus) <a name="table-usage"></a> ## Usage ```js import { table } from 'table'; // Using commonjs? // const { table } = require('table'); const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'] ]; console.log(table(data)); ``` ``` ╔════╤════╤════╗ ║ 0A │ 0B │ 0C ║ ╟────┼────┼────╢ ║ 1A │ 1B │ 1C ║ ╟────┼────┼────╢ ║ 2A │ 2B │ 2C ║ ╚════╧════╧════╝ ``` <a name="table-api"></a> ## API <a name="table-api-table-1"></a> ### table Returns the string in the table format **Parameters:** - **_data_:** The data to display - Type: `any[][]` - Required: `true` - **_config_:** Table configuration - Type: `object` - Required: `false` <a name="table-api-table-1-config-border"></a> ##### config.border Type: `{ [type: string]: string }`\ Default: `honeywell` [template](#getbordercharacters) Custom borders. The keys are any of: - `topLeft`, `topRight`, `topBody`,`topJoin` - `bottomLeft`, `bottomRight`, `bottomBody`, `bottomJoin` - `joinLeft`, `joinRight`, `joinBody`, `joinJoin` - `bodyLeft`, `bodyRight`, `bodyJoin` - `headerJoin` ```js const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'] ]; const config = { border: { topBody: `─`, topJoin: `┬`, topLeft: `┌`, topRight: `┐`, bottomBody: `─`, bottomJoin: `┴`, bottomLeft: `└`, bottomRight: `┘`, bodyLeft: `│`, bodyRight: `│`, bodyJoin: `│`, joinBody: `─`, joinLeft: `├`, joinRight: `┤`, joinJoin: `┼` } }; console.log(table(data, config)); ``` ``` ┌────┬────┬────┐ │ 0A │ 0B │ 0C │ ├────┼────┼────┤ │ 1A │ 1B │ 1C │ ├────┼────┼────┤ │ 2A │ 2B │ 2C │ └────┴────┴────┘ ``` <a name="table-api-table-1-config-drawverticalline"></a> ##### config.drawVerticalLine Type: `(lineIndex: number, columnCount: number) => boolean`\ Default: `() => true` It is used to tell whether to draw a vertical line. This callback is called for each vertical border of the table. If the table has `n` columns, then the `index` parameter is alternatively received all numbers in range `[0, n]` inclusively. ```js const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'], ['3A', '3B', '3C'], ['4A', '4B', '4C'] ]; const config = { drawVerticalLine: (lineIndex, columnCount) => { return lineIndex === 0 || lineIndex === columnCount; } }; console.log(table(data, config)); ``` ``` ╔════════════╗ ║ 0A 0B 0C ║ ╟────────────╢ ║ 1A 1B 1C ║ ╟────────────╢ ║ 2A 2B 2C ║ ╟────────────╢ ║ 3A 3B 3C ║ ╟────────────╢ ║ 4A 4B 4C ║ ╚════════════╝ ``` <a name="table-api-table-1-config-drawhorizontalline"></a> ##### config.drawHorizontalLine Type: `(lineIndex: number, rowCount: number) => boolean`\ Default: `() => true` It is used to tell whether to draw a horizontal line. This callback is called for each horizontal border of the table. If the table has `n` rows, then the `index` parameter is alternatively received all numbers in range `[0, n]` inclusively. If the table has `n` rows and contains the header, then the range will be `[0, n+1]` inclusively. ```js const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'], ['3A', '3B', '3C'], ['4A', '4B', '4C'] ]; const config = { drawHorizontalLine: (lineIndex, rowCount) => { return lineIndex === 0 || lineIndex === 1 || lineIndex === rowCount - 1 || lineIndex === rowCount; } }; console.log(table(data, config)); ``` ``` ╔════╤════╤════╗ ║ 0A │ 0B │ 0C ║ ╟────┼────┼────╢ ║ 1A │ 1B │ 1C ║ ║ 2A │ 2B │ 2C ║ ║ 3A │ 3B │ 3C ║ ╟────┼────┼────╢ ║ 4A │ 4B │ 4C ║ ╚════╧════╧════╝ ``` <a name="table-api-table-1-config-singleline"></a> ##### config.singleLine Type: `boolean`\ Default: `false` If `true`, horizontal lines inside the table are not drawn. This option also overrides the `config.drawHorizontalLine` if specified. ```js const data = [ ['-rw-r--r--', '1', 'pandorym', 'staff', '1529', 'May 23 11:25', 'LICENSE'], ['-rw-r--r--', '1', 'pandorym', 'staff', '16327', 'May 23 11:58', 'README.md'], ['drwxr-xr-x', '76', 'pandorym', 'staff', '2432', 'May 23 12:02', 'dist'], ['drwxr-xr-x', '634', 'pandorym', 'staff', '20288', 'May 23 11:54', 'node_modules'], ['-rw-r--r--', '1,', 'pandorym', 'staff', '525688', 'May 23 11:52', 'package-lock.json'], ['-rw-r--r--@', '1', 'pandorym', 'staff', '2440', 'May 23 11:25', 'package.json'], ['drwxr-xr-x', '27', 'pandorym', 'staff', '864', 'May 23 11:25', 'src'], ['drwxr-xr-x', '20', 'pandorym', 'staff', '640', 'May 23 11:25', 'test'], ]; const config = { singleLine: true }; console.log(table(data, config)); ``` ``` ╔═════════════╤═════╤══════════╤═══════╤════════╤══════════════╤═══════════════════╗ ║ -rw-r--r-- │ 1 │ pandorym │ staff │ 1529 │ May 23 11:25 │ LICENSE ║ ║ -rw-r--r-- │ 1 │ pandorym │ staff │ 16327 │ May 23 11:58 │ README.md ║ ║ drwxr-xr-x │ 76 │ pandorym │ staff │ 2432 │ May 23 12:02 │ dist ║ ║ drwxr-xr-x │ 634 │ pandorym │ staff │ 20288 │ May 23 11:54 │ node_modules ║ ║ -rw-r--r-- │ 1, │ pandorym │ staff │ 525688 │ May 23 11:52 │ package-lock.json ║ ║ -rw-r--r--@ │ 1 │ pandorym │ staff │ 2440 │ May 23 11:25 │ package.json ║ ║ drwxr-xr-x │ 27 │ pandorym │ staff │ 864 │ May 23 11:25 │ src ║ ║ drwxr-xr-x │ 20 │ pandorym │ staff │ 640 │ May 23 11:25 │ test ║ ╚═════════════╧═════╧══════════╧═══════╧════════╧══════════════╧═══════════════════╝ ``` <a name="table-api-table-1-config-columns"></a> ##### config.columns Type: `Column[] | { [columnIndex: number]: Column }` Column specific configurations. <a name="table-api-table-1-config-columns-config-columns-width"></a> ###### config.columns[*].width Type: `number`\ Default: the maximum cell widths of the column Column width (excluding the paddings). ```js const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'] ]; const config = { columns: { 1: { width: 10 } } }; console.log(table(data, config)); ``` ``` ╔════╤════════════╤════╗ ║ 0A │ 0B │ 0C ║ ╟────┼────────────┼────╢ ║ 1A │ 1B │ 1C ║ ╟────┼────────────┼────╢ ║ 2A │ 2B │ 2C ║ ╚════╧════════════╧════╝ ``` <a name="table-api-table-1-config-columns-config-columns-alignment"></a> ###### config.columns[*].alignment Type: `'center' | 'justify' | 'left' | 'right'`\ Default: `'left'` Cell content horizontal alignment ```js const data = [ ['0A', '0B', '0C', '0D 0E 0F'], ['1A', '1B', '1C', '1D 1E 1F'], ['2A', '2B', '2C', '2D 2E 2F'], ]; const config = { columnDefault: { width: 10, }, columns: [ { alignment: 'left' }, { alignment: 'center' }, { alignment: 'right' }, { alignment: 'justify' } ], }; console.log(table(data, config)); ``` ``` ╔════════════╤════════════╤════════════╤════════════╗ ║ 0A │ 0B │ 0C │ 0D 0E 0F ║ ╟────────────┼────────────┼────────────┼────────────╢ ║ 1A │ 1B │ 1C │ 1D 1E 1F ║ ╟────────────┼────────────┼────────────┼────────────╢ ║ 2A │ 2B │ 2C │ 2D 2E 2F ║ ╚════════════╧════════════╧════════════╧════════════╝ ``` <a name="table-api-table-1-config-columns-config-columns-verticalalignment"></a> ###### config.columns[*].verticalAlignment Type: `'top' | 'middle' | 'bottom'`\ Default: `'top'` Cell content vertical alignment ```js const data = [ ['A', 'B', 'C', 'DEF'], ]; const config = { columnDefault: { width: 1, }, columns: [ { verticalAlignment: 'top' }, { verticalAlignment: 'middle' }, { verticalAlignment: 'bottom' }, ], }; console.log(table(data, config)); ``` ``` ╔═══╤═══╤═══╤═══╗ ║ A │ │ │ D ║ ║ │ B │ │ E ║ ║ │ │ C │ F ║ ╚═══╧═══╧═══╧═══╝ ``` <a name="table-api-table-1-config-columns-config-columns-paddingleft"></a> ###### config.columns[*].paddingLeft Type: `number`\ Default: `1` The number of whitespaces used to pad the content on the left. <a name="table-api-table-1-config-columns-config-columns-paddingright"></a> ###### config.columns[*].paddingRight Type: `number`\ Default: `1` The number of whitespaces used to pad the content on the right. The `paddingLeft` and `paddingRight` options do not count on the column width. So the column has `width = 5`, `paddingLeft = 2` and `paddingRight = 2` will have the total width is `9`. ```js const data = [ ['0A', 'AABBCC', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'] ]; const config = { columns: [ { paddingLeft: 3 }, { width: 2, paddingRight: 3 } ] }; console.log(table(data, config)); ``` ``` ╔══════╤══════╤════╗ ║ 0A │ AA │ 0C ║ ║ │ BB │ ║ ║ │ CC │ ║ ╟──────┼──────┼────╢ ║ 1A │ 1B │ 1C ║ ╟──────┼──────┼────╢ ║ 2A │ 2B │ 2C ║ ╚══════╧══════╧════╝ ``` <a name="table-api-table-1-config-columns-config-columns-truncate"></a> ###### config.columns[*].truncate Type: `number`\ Default: `Infinity` The number of characters is which the content will be truncated. To handle a content that overflows the container width, `table` package implements [text wrapping](#config.columns[*].wrapWord). However, sometimes you may want to truncate content that is too long to be displayed in the table. ```js const data = [ ['Lorem ipsum dolor sit amet, consectetur adipiscing elit. Phasellus pulvinar nibh sed mauris convallis dapibus. Nunc venenatis tempus nulla sit amet viverra.'] ]; const config = { columns: [ { width: 20, truncate: 100 } ] }; console.log(table(data, config)); ``` ``` ╔══════════════════════╗ ║ Lorem ipsum dolor si ║ ║ t amet, consectetur ║ ║ adipiscing elit. Pha ║ ║ sellus pulvinar nibh ║ ║ sed mauris convall… ║ ╚══════════════════════╝ ``` <a name="table-api-table-1-config-columns-config-columns-wrapword"></a> ###### config.columns[*].wrapWord Type: `boolean`\ Default: `false` The `table` package implements auto text wrapping, i.e., text that has the width greater than the container width will be separated into multiple lines at the nearest space or one of the special characters: `\|/_.,;-`. When `wrapWord` is `false`: ```js const data = [ ['Lorem ipsum dolor sit amet, consectetur adipiscing elit. Phasellus pulvinar nibh sed mauris convallis dapibus. Nunc venenatis tempus nulla sit amet viverra.'] ]; const config = { columns: [ { width: 20 } ] }; console.log(table(data, config)); ``` ``` ╔══════════════════════╗ ║ Lorem ipsum dolor si ║ ║ t amet, consectetur ║ ║ adipiscing elit. Pha ║ ║ sellus pulvinar nibh ║ ║ sed mauris convallis ║ ║ dapibus. Nunc venena ║ ║ tis tempus nulla sit ║ ║ amet viverra. ║ ╚══════════════════════╝ ``` When `wrapWord` is `true`: ``` ╔══════════════════════╗ ║ Lorem ipsum dolor ║ ║ sit amet, ║ ║ consectetur ║ ║ adipiscing elit. ║ ║ Phasellus pulvinar ║ ║ nibh sed mauris ║ ║ convallis dapibus. ║ ║ Nunc venenatis ║ ║ tempus nulla sit ║ ║ amet viverra. ║ ╚══════════════════════╝ ``` <a name="table-api-table-1-config-columndefault"></a> ##### config.columnDefault Type: `Column`\ Default: `{}` The default configuration for all columns. Column-specific settings will overwrite the default values. <a name="table-api-table-1-config-header"></a> ##### config.header Type: `object` Header configuration. The header configuration inherits the most of the column's, except: - `content` **{string}**: the header content. - `width:` calculate based on the content width automatically. - `alignment:` `center` be default. - `verticalAlignment:` is not supported. - `config.border.topJoin` will be `config.border.topBody` for prettier. ```js const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'], ]; const config = { columnDefault: { width: 10, }, header: { alignment: 'center', content: 'THE HEADER\nThis is the table about something', }, } console.log(table(data, config)); ``` ``` ╔══════════════════════════════════════╗ ║ THE HEADER ║ ║ This is the table about something ║ ╟────────────┬────────────┬────────────╢ ║ 0A │ 0B │ 0C ║ ╟────────────┼────────────┼────────────╢ ║ 1A │ 1B │ 1C ║ ╟────────────┼────────────┼────────────╢ ║ 2A │ 2B │ 2C ║ ╚════════════╧════════════╧════════════╝ ``` <a name="table-api-createstream"></a> ### createStream `table` package exports `createStream` function used to draw a table and append rows. **Parameter:** - _**config:**_ the same as `table`'s, except `config.columnDefault.width` and `config.columnCount` must be provided. ```js import { createStream } from 'table'; const config = { columnDefault: { width: 50 }, columnCount: 1 }; const stream = createStream(config); setInterval(() => { stream.write([new Date()]); }, 500); ```  `table` package uses ANSI escape codes to overwrite the output of the last line when a new row is printed. The underlying implementation is explained in this [Stack Overflow answer](http://stackoverflow.com/a/32938658/368691). Streaming supports all of the configuration properties and functionality of a static table (such as auto text wrapping, alignment and padding), e.g. ```js import { createStream } from 'table'; import _ from 'lodash'; const config = { columnDefault: { width: 50 }, columnCount: 3, columns: [ { width: 10, alignment: 'right' }, { alignment: 'center' }, { width: 10 } ] }; const stream = createStream(config); let i = 0; setInterval(() => { let random; random = _.sample('abcdefghijklmnopqrstuvwxyz', _.random(1, 30)).join(''); stream.write([i++, new Date(), random]); }, 500); ```  <a name="table-api-getbordercharacters"></a> ### getBorderCharacters **Parameter:** - **_template_** - Type: `'honeywell' | 'norc' | 'ramac' | 'void'` - Required: `true` You can load one of the predefined border templates using `getBorderCharacters` function. ```js import { table, getBorderCharacters } from 'table'; const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'] ]; const config = { border: getBorderCharacters(`name of the template`) }; console.log(table(data, config)); ``` ``` # honeywell ╔════╤════╤════╗ ║ 0A │ 0B │ 0C ║ ╟────┼────┼────╢ ║ 1A │ 1B │ 1C ║ ╟────┼────┼────╢ ║ 2A │ 2B │ 2C ║ ╚════╧════╧════╝ # norc ┌────┬────┬────┐ │ 0A │ 0B │ 0C │ ├────┼────┼────┤ │ 1A │ 1B │ 1C │ ├────┼────┼────┤ │ 2A │ 2B │ 2C │ └────┴────┴────┘ # ramac (ASCII; for use in terminals that do not support Unicode characters) +----+----+----+ | 0A | 0B | 0C | |----|----|----| | 1A | 1B | 1C | |----|----|----| | 2A | 2B | 2C | +----+----+----+ # void (no borders; see "borderless table" section of the documentation) 0A 0B 0C 1A 1B 1C 2A 2B 2C ``` Raise [an issue](https://github.com/gajus/table/issues) if you'd like to contribute a new border template. <a name="table-api-getbordercharacters-borderless-table"></a> #### Borderless Table Simply using `void` border character template creates a table with a lot of unnecessary spacing. To create a more pleasant to the eye table, reset the padding and remove the joining rows, e.g. ```js const output = table(data, { border: getBorderCharacters('void'), columnDefault: { paddingLeft: 0, paddingRight: 1 }, drawHorizontalLine: () => false } ); console.log(output); ``` ``` 0A 0B 0C 1A 1B 1C 2A 2B 2C ``` An ini format parser and serializer for node. Sections are treated as nested objects. Items before the first heading are saved on the object directly. ## Usage Consider an ini-file `config.ini` that looks like this: ; this comment is being ignored scope = global [database] user = dbuser password = dbpassword database = use_this_database [paths.default] datadir = /var/lib/data array[] = first value array[] = second value array[] = third value You can read, manipulate and write the ini-file like so: var fs = require('fs') , ini = require('ini') var config = ini.parse(fs.readFileSync('./config.ini', 'utf-8')) config.scope = 'local' config.database.database = 'use_another_database' config.paths.default.tmpdir = '/tmp' delete config.paths.default.datadir config.paths.default.array.push('fourth value') fs.writeFileSync('./config_modified.ini', ini.stringify(config, { section: 'section' })) This will result in a file called `config_modified.ini` being written to the filesystem with the following content: [section] scope=local [section.database] user=dbuser password=dbpassword database=use_another_database [section.paths.default] tmpdir=/tmp array[]=first value array[]=second value array[]=third value array[]=fourth value ## API ### decode(inistring) Decode the ini-style formatted `inistring` into a nested object. ### parse(inistring) Alias for `decode(inistring)` ### encode(object, [options]) Encode the object `object` into an ini-style formatted string. If the optional parameter `section` is given, then all top-level properties of the object are put into this section and the `section`-string is prepended to all sub-sections, see the usage example above. The `options` object may contain the following: * `section` A string which will be the first `section` in the encoded ini data. Defaults to none. * `whitespace` Boolean to specify whether to put whitespace around the `=` character. By default, whitespace is omitted, to be friendly to some persnickety old parsers that don't tolerate it well. But some find that it's more human-readable and pretty with the whitespace. For backwards compatibility reasons, if a `string` options is passed in, then it is assumed to be the `section` value. ### stringify(object, [options]) Alias for `encode(object, [options])` ### safe(val) Escapes the string `val` such that it is safe to be used as a key or value in an ini-file. Basically escapes quotes. For example ini.safe('"unsafe string"') would result in "\"unsafe string\"" ### unsafe(val) Unescapes the string `val` # Source Map [](https://travis-ci.org/mozilla/source-map) [](https://www.npmjs.com/package/source-map) This is a library to generate and consume the source map format [described here][format]. [format]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit ## Use with Node $ npm install source-map ## Use on the Web <script src="https://raw.githubusercontent.com/mozilla/source-map/master/dist/source-map.min.js" defer></script> -------------------------------------------------------------------------------- <!-- `npm run toc` to regenerate the Table of Contents --> <!-- START doctoc generated TOC please keep comment here to allow auto update --> <!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE --> ## Table of Contents - [Examples](#examples) - [Consuming a source map](#consuming-a-source-map) - [Generating a source map](#generating-a-source-map) - [With SourceNode (high level API)](#with-sourcenode-high-level-api) - [With SourceMapGenerator (low level API)](#with-sourcemapgenerator-low-level-api) - [API](#api) - [SourceMapConsumer](#sourcemapconsumer) - [new SourceMapConsumer(rawSourceMap)](#new-sourcemapconsumerrawsourcemap) - [SourceMapConsumer.prototype.computeColumnSpans()](#sourcemapconsumerprototypecomputecolumnspans) - [SourceMapConsumer.prototype.originalPositionFor(generatedPosition)](#sourcemapconsumerprototypeoriginalpositionforgeneratedposition) - [SourceMapConsumer.prototype.generatedPositionFor(originalPosition)](#sourcemapconsumerprototypegeneratedpositionfororiginalposition) - [SourceMapConsumer.prototype.allGeneratedPositionsFor(originalPosition)](#sourcemapconsumerprototypeallgeneratedpositionsfororiginalposition) - [SourceMapConsumer.prototype.hasContentsOfAllSources()](#sourcemapconsumerprototypehascontentsofallsources) - [SourceMapConsumer.prototype.sourceContentFor(source[, returnNullOnMissing])](#sourcemapconsumerprototypesourcecontentforsource-returnnullonmissing) - [SourceMapConsumer.prototype.eachMapping(callback, context, order)](#sourcemapconsumerprototypeeachmappingcallback-context-order) - [SourceMapGenerator](#sourcemapgenerator) - [new SourceMapGenerator([startOfSourceMap])](#new-sourcemapgeneratorstartofsourcemap) - [SourceMapGenerator.fromSourceMap(sourceMapConsumer)](#sourcemapgeneratorfromsourcemapsourcemapconsumer) - [SourceMapGenerator.prototype.addMapping(mapping)](#sourcemapgeneratorprototypeaddmappingmapping) - [SourceMapGenerator.prototype.setSourceContent(sourceFile, sourceContent)](#sourcemapgeneratorprototypesetsourcecontentsourcefile-sourcecontent) - [SourceMapGenerator.prototype.applySourceMap(sourceMapConsumer[, sourceFile[, sourceMapPath]])](#sourcemapgeneratorprototypeapplysourcemapsourcemapconsumer-sourcefile-sourcemappath) - [SourceMapGenerator.prototype.toString()](#sourcemapgeneratorprototypetostring) - [SourceNode](#sourcenode) - [new SourceNode([line, column, source[, chunk[, name]]])](#new-sourcenodeline-column-source-chunk-name) - [SourceNode.fromStringWithSourceMap(code, sourceMapConsumer[, relativePath])](#sourcenodefromstringwithsourcemapcode-sourcemapconsumer-relativepath) - [SourceNode.prototype.add(chunk)](#sourcenodeprototypeaddchunk) - [SourceNode.prototype.prepend(chunk)](#sourcenodeprototypeprependchunk) - [SourceNode.prototype.setSourceContent(sourceFile, sourceContent)](#sourcenodeprototypesetsourcecontentsourcefile-sourcecontent) - [SourceNode.prototype.walk(fn)](#sourcenodeprototypewalkfn) - [SourceNode.prototype.walkSourceContents(fn)](#sourcenodeprototypewalksourcecontentsfn) - [SourceNode.prototype.join(sep)](#sourcenodeprototypejoinsep) - [SourceNode.prototype.replaceRight(pattern, replacement)](#sourcenodeprototypereplacerightpattern-replacement) - [SourceNode.prototype.toString()](#sourcenodeprototypetostring) - [SourceNode.prototype.toStringWithSourceMap([startOfSourceMap])](#sourcenodeprototypetostringwithsourcemapstartofsourcemap) <!-- END doctoc generated TOC please keep comment here to allow auto update --> ## Examples ### Consuming a source map ```js var rawSourceMap = { version: 3, file: 'min.js', names: ['bar', 'baz', 'n'], sources: ['one.js', 'two.js'], sourceRoot: 'http://example.com/www/js/', mappings: 'CAAC,IAAI,IAAM,SAAUA,GAClB,OAAOC,IAAID;CCDb,IAAI,IAAM,SAAUE,GAClB,OAAOA' }; var smc = new SourceMapConsumer(rawSourceMap); console.log(smc.sources); // [ 'http://example.com/www/js/one.js', // 'http://example.com/www/js/two.js' ] console.log(smc.originalPositionFor({ line: 2, column: 28 })); // { source: 'http://example.com/www/js/two.js', // line: 2, // column: 10, // name: 'n' } console.log(smc.generatedPositionFor({ source: 'http://example.com/www/js/two.js', line: 2, column: 10 })); // { line: 2, column: 28 } smc.eachMapping(function (m) { // ... }); ``` ### Generating a source map In depth guide: [**Compiling to JavaScript, and Debugging with Source Maps**](https://hacks.mozilla.org/2013/05/compiling-to-javascript-and-debugging-with-source-maps/) #### With SourceNode (high level API) ```js function compile(ast) { switch (ast.type) { case 'BinaryExpression': return new SourceNode( ast.location.line, ast.location.column, ast.location.source, [compile(ast.left), " + ", compile(ast.right)] ); case 'Literal': return new SourceNode( ast.location.line, ast.location.column, ast.location.source, String(ast.value) ); // ... default: throw new Error("Bad AST"); } } var ast = parse("40 + 2", "add.js"); console.log(compile(ast).toStringWithSourceMap({ file: 'add.js' })); // { code: '40 + 2', // map: [object SourceMapGenerator] } ``` #### With SourceMapGenerator (low level API) ```js var map = new SourceMapGenerator({ file: "source-mapped.js" }); map.addMapping({ generated: { line: 10, column: 35 }, source: "foo.js", original: { line: 33, column: 2 }, name: "christopher" }); console.log(map.toString()); // '{"version":3,"file":"source-mapped.js","sources":["foo.js"],"names":["christopher"],"mappings":";;;;;;;;;mCAgCEA"}' ``` ## API Get a reference to the module: ```js // Node.js var sourceMap = require('source-map'); // Browser builds var sourceMap = window.sourceMap; // Inside Firefox const sourceMap = require("devtools/toolkit/sourcemap/source-map.js"); ``` ### SourceMapConsumer A SourceMapConsumer instance represents a parsed source map which we can query for information about the original file positions by giving it a file position in the generated source. #### new SourceMapConsumer(rawSourceMap) The only parameter is the raw source map (either as a string which can be `JSON.parse`'d, or an object). According to the spec, source maps have the following attributes: * `version`: Which version of the source map spec this map is following. * `sources`: An array of URLs to the original source files. * `names`: An array of identifiers which can be referenced by individual mappings. * `sourceRoot`: Optional. The URL root from which all sources are relative. * `sourcesContent`: Optional. An array of contents of the original source files. * `mappings`: A string of base64 VLQs which contain the actual mappings. * `file`: Optional. The generated filename this source map is associated with. ```js var consumer = new sourceMap.SourceMapConsumer(rawSourceMapJsonData); ``` #### SourceMapConsumer.prototype.computeColumnSpans() Compute the last column for each generated mapping. The last column is inclusive. ```js // Before: consumer.allGeneratedPositionsFor({ line: 2, source: "foo.coffee" }) // [ { line: 2, // column: 1 }, // { line: 2, // column: 10 }, // { line: 2, // column: 20 } ] consumer.computeColumnSpans(); // After: consumer.allGeneratedPositionsFor({ line: 2, source: "foo.coffee" }) // [ { line: 2, // column: 1, // lastColumn: 9 }, // { line: 2, // column: 10, // lastColumn: 19 }, // { line: 2, // column: 20, // lastColumn: Infinity } ] ``` #### SourceMapConsumer.prototype.originalPositionFor(generatedPosition) Returns the original source, line, and column information for the generated source's line and column positions provided. The only argument is an object with the following properties: * `line`: The line number in the generated source. Line numbers in this library are 1-based (note that the underlying source map specification uses 0-based line numbers -- this library handles the translation). * `column`: The column number in the generated source. Column numbers in this library are 0-based. * `bias`: Either `SourceMapConsumer.GREATEST_LOWER_BOUND` or `SourceMapConsumer.LEAST_UPPER_BOUND`. Specifies whether to return the closest element that is smaller than or greater than the one we are searching for, respectively, if the exact element cannot be found. Defaults to `SourceMapConsumer.GREATEST_LOWER_BOUND`. and an object is returned with the following properties: * `source`: The original source file, or null if this information is not available. * `line`: The line number in the original source, or null if this information is not available. The line number is 1-based. * `column`: The column number in the original source, or null if this information is not available. The column number is 0-based. * `name`: The original identifier, or null if this information is not available. ```js consumer.originalPositionFor({ line: 2, column: 10 }) // { source: 'foo.coffee', // line: 2, // column: 2, // name: null } consumer.originalPositionFor({ line: 99999999999999999, column: 999999999999999 }) // { source: null, // line: null, // column: null, // name: null } ``` #### SourceMapConsumer.prototype.generatedPositionFor(originalPosition) Returns the generated line and column information for the original source, line, and column positions provided. The only argument is an object with the following properties: * `source`: The filename of the original source. * `line`: The line number in the original source. The line number is 1-based. * `column`: The column number in the original source. The column number is 0-based. and an object is returned with the following properties: * `line`: The line number in the generated source, or null. The line number is 1-based. * `column`: The column number in the generated source, or null. The column number is 0-based. ```js consumer.generatedPositionFor({ source: "example.js", line: 2, column: 10 }) // { line: 1, // column: 56 } ``` #### SourceMapConsumer.prototype.allGeneratedPositionsFor(originalPosition) Returns all generated line and column information for the original source, line, and column provided. If no column is provided, returns all mappings corresponding to a either the line we are searching for or the next closest line that has any mappings. Otherwise, returns all mappings corresponding to the given line and either the column we are searching for or the next closest column that has any offsets. The only argument is an object with the following properties: * `source`: The filename of the original source. * `line`: The line number in the original source. The line number is 1-based. * `column`: Optional. The column number in the original source. The column number is 0-based. and an array of objects is returned, each with the following properties: * `line`: The line number in the generated source, or null. The line number is 1-based. * `column`: The column number in the generated source, or null. The column number is 0-based. ```js consumer.allGeneratedpositionsfor({ line: 2, source: "foo.coffee" }) // [ { line: 2, // column: 1 }, // { line: 2, // column: 10 }, // { line: 2, // column: 20 } ] ``` #### SourceMapConsumer.prototype.hasContentsOfAllSources() Return true if we have the embedded source content for every source listed in the source map, false otherwise. In other words, if this method returns `true`, then `consumer.sourceContentFor(s)` will succeed for every source `s` in `consumer.sources`. ```js // ... if (consumer.hasContentsOfAllSources()) { consumerReadyCallback(consumer); } else { fetchSources(consumer, consumerReadyCallback); } // ... ``` #### SourceMapConsumer.prototype.sourceContentFor(source[, returnNullOnMissing]) Returns the original source content for the source provided. The only argument is the URL of the original source file. If the source content for the given source is not found, then an error is thrown. Optionally, pass `true` as the second param to have `null` returned instead. ```js consumer.sources // [ "my-cool-lib.clj" ] consumer.sourceContentFor("my-cool-lib.clj") // "..." consumer.sourceContentFor("this is not in the source map"); // Error: "this is not in the source map" is not in the source map consumer.sourceContentFor("this is not in the source map", true); // null ``` #### SourceMapConsumer.prototype.eachMapping(callback, context, order) Iterate over each mapping between an original source/line/column and a generated line/column in this source map. * `callback`: The function that is called with each mapping. Mappings have the form `{ source, generatedLine, generatedColumn, originalLine, originalColumn, name }` * `context`: Optional. If specified, this object will be the value of `this` every time that `callback` is called. * `order`: Either `SourceMapConsumer.GENERATED_ORDER` or `SourceMapConsumer.ORIGINAL_ORDER`. Specifies whether you want to iterate over the mappings sorted by the generated file's line/column order or the original's source/line/column order, respectively. Defaults to `SourceMapConsumer.GENERATED_ORDER`. ```js consumer.eachMapping(function (m) { console.log(m); }) // ... // { source: 'illmatic.js', // generatedLine: 1, // generatedColumn: 0, // originalLine: 1, // originalColumn: 0, // name: null } // { source: 'illmatic.js', // generatedLine: 2, // generatedColumn: 0, // originalLine: 2, // originalColumn: 0, // name: null } // ... ``` ### SourceMapGenerator An instance of the SourceMapGenerator represents a source map which is being built incrementally. #### new SourceMapGenerator([startOfSourceMap]) You may pass an object with the following properties: * `file`: The filename of the generated source that this source map is associated with. * `sourceRoot`: A root for all relative URLs in this source map. * `skipValidation`: Optional. When `true`, disables validation of mappings as they are added. This can improve performance but should be used with discretion, as a last resort. Even then, one should avoid using this flag when running tests, if possible. ```js var generator = new sourceMap.SourceMapGenerator({ file: "my-generated-javascript-file.js", sourceRoot: "http://example.com/app/js/" }); ``` #### SourceMapGenerator.fromSourceMap(sourceMapConsumer) Creates a new `SourceMapGenerator` from an existing `SourceMapConsumer` instance. * `sourceMapConsumer` The SourceMap. ```js var generator = sourceMap.SourceMapGenerator.fromSourceMap(consumer); ``` #### SourceMapGenerator.prototype.addMapping(mapping) Add a single mapping from original source line and column to the generated source's line and column for this source map being created. The mapping object should have the following properties: * `generated`: An object with the generated line and column positions. * `original`: An object with the original line and column positions. * `source`: The original source file (relative to the sourceRoot). * `name`: An optional original token name for this mapping. ```js generator.addMapping({ source: "module-one.scm", original: { line: 128, column: 0 }, generated: { line: 3, column: 456 } }) ``` #### SourceMapGenerator.prototype.setSourceContent(sourceFile, sourceContent) Set the source content for an original source file. * `sourceFile` the URL of the original source file. * `sourceContent` the content of the source file. ```js generator.setSourceContent("module-one.scm", fs.readFileSync("path/to/module-one.scm")) ``` #### SourceMapGenerator.prototype.applySourceMap(sourceMapConsumer[, sourceFile[, sourceMapPath]]) Applies a SourceMap for a source file to the SourceMap. Each mapping to the supplied source file is rewritten using the supplied SourceMap. Note: The resolution for the resulting mappings is the minimum of this map and the supplied map. * `sourceMapConsumer`: The SourceMap to be applied. * `sourceFile`: Optional. The filename of the source file. If omitted, sourceMapConsumer.file will be used, if it exists. Otherwise an error will be thrown. * `sourceMapPath`: Optional. The dirname of the path to the SourceMap to be applied. If relative, it is relative to the SourceMap. This parameter is needed when the two SourceMaps aren't in the same directory, and the SourceMap to be applied contains relative source paths. If so, those relative source paths need to be rewritten relative to the SourceMap. If omitted, it is assumed that both SourceMaps are in the same directory, thus not needing any rewriting. (Supplying `'.'` has the same effect.) #### SourceMapGenerator.prototype.toString() Renders the source map being generated to a string. ```js generator.toString() // '{"version":3,"sources":["module-one.scm"],"names":[],"mappings":"...snip...","file":"my-generated-javascript-file.js","sourceRoot":"http://example.com/app/js/"}' ``` ### SourceNode SourceNodes provide a way to abstract over interpolating and/or concatenating snippets of generated JavaScript source code, while maintaining the line and column information associated between those snippets and the original source code. This is useful as the final intermediate representation a compiler might use before outputting the generated JS and source map. #### new SourceNode([line, column, source[, chunk[, name]]]) * `line`: The original line number associated with this source node, or null if it isn't associated with an original line. The line number is 1-based. * `column`: The original column number associated with this source node, or null if it isn't associated with an original column. The column number is 0-based. * `source`: The original source's filename; null if no filename is provided. * `chunk`: Optional. Is immediately passed to `SourceNode.prototype.add`, see below. * `name`: Optional. The original identifier. ```js var node = new SourceNode(1, 2, "a.cpp", [ new SourceNode(3, 4, "b.cpp", "extern int status;\n"), new SourceNode(5, 6, "c.cpp", "std::string* make_string(size_t n);\n"), new SourceNode(7, 8, "d.cpp", "int main(int argc, char** argv) {}\n"), ]); ``` #### SourceNode.fromStringWithSourceMap(code, sourceMapConsumer[, relativePath]) Creates a SourceNode from generated code and a SourceMapConsumer. * `code`: The generated code * `sourceMapConsumer` The SourceMap for the generated code * `relativePath` The optional path that relative sources in `sourceMapConsumer` should be relative to. ```js var consumer = new SourceMapConsumer(fs.readFileSync("path/to/my-file.js.map", "utf8")); var node = SourceNode.fromStringWithSourceMap(fs.readFileSync("path/to/my-file.js"), consumer); ``` #### SourceNode.prototype.add(chunk) Add a chunk of generated JS to this source node. * `chunk`: A string snippet of generated JS code, another instance of `SourceNode`, or an array where each member is one of those things. ```js node.add(" + "); node.add(otherNode); node.add([leftHandOperandNode, " + ", rightHandOperandNode]); ``` #### SourceNode.prototype.prepend(chunk) Prepend a chunk of generated JS to this source node. * `chunk`: A string snippet of generated JS code, another instance of `SourceNode`, or an array where each member is one of those things. ```js node.prepend("/** Build Id: f783haef86324gf **/\n\n"); ``` #### SourceNode.prototype.setSourceContent(sourceFile, sourceContent) Set the source content for a source file. This will be added to the `SourceMap` in the `sourcesContent` field. * `sourceFile`: The filename of the source file * `sourceContent`: The content of the source file ```js node.setSourceContent("module-one.scm", fs.readFileSync("path/to/module-one.scm")) ``` #### SourceNode.prototype.walk(fn) Walk over the tree of JS snippets in this node and its children. The walking function is called once for each snippet of JS and is passed that snippet and the its original associated source's line/column location. * `fn`: The traversal function. ```js var node = new SourceNode(1, 2, "a.js", [ new SourceNode(3, 4, "b.js", "uno"), "dos", [ "tres", new SourceNode(5, 6, "c.js", "quatro") ] ]); node.walk(function (code, loc) { console.log("WALK:", code, loc); }) // WALK: uno { source: 'b.js', line: 3, column: 4, name: null } // WALK: dos { source: 'a.js', line: 1, column: 2, name: null } // WALK: tres { source: 'a.js', line: 1, column: 2, name: null } // WALK: quatro { source: 'c.js', line: 5, column: 6, name: null } ``` #### SourceNode.prototype.walkSourceContents(fn) Walk over the tree of SourceNodes. The walking function is called for each source file content and is passed the filename and source content. * `fn`: The traversal function. ```js var a = new SourceNode(1, 2, "a.js", "generated from a"); a.setSourceContent("a.js", "original a"); var b = new SourceNode(1, 2, "b.js", "generated from b"); b.setSourceContent("b.js", "original b"); var c = new SourceNode(1, 2, "c.js", "generated from c"); c.setSourceContent("c.js", "original c"); var node = new SourceNode(null, null, null, [a, b, c]); node.walkSourceContents(function (source, contents) { console.log("WALK:", source, ":", contents); }) // WALK: a.js : original a // WALK: b.js : original b // WALK: c.js : original c ``` #### SourceNode.prototype.join(sep) Like `Array.prototype.join` except for SourceNodes. Inserts the separator between each of this source node's children. * `sep`: The separator. ```js var lhs = new SourceNode(1, 2, "a.rs", "my_copy"); var operand = new SourceNode(3, 4, "a.rs", "="); var rhs = new SourceNode(5, 6, "a.rs", "orig.clone()"); var node = new SourceNode(null, null, null, [ lhs, operand, rhs ]); var joinedNode = node.join(" "); ``` #### SourceNode.prototype.replaceRight(pattern, replacement) Call `String.prototype.replace` on the very right-most source snippet. Useful for trimming white space from the end of a source node, etc. * `pattern`: The pattern to replace. * `replacement`: The thing to replace the pattern with. ```js // Trim trailing white space. node.replaceRight(/\s*$/, ""); ``` #### SourceNode.prototype.toString() Return the string representation of this source node. Walks over the tree and concatenates all the various snippets together to one string. ```js var node = new SourceNode(1, 2, "a.js", [ new SourceNode(3, 4, "b.js", "uno"), "dos", [ "tres", new SourceNode(5, 6, "c.js", "quatro") ] ]); node.toString() // 'unodostresquatro' ``` #### SourceNode.prototype.toStringWithSourceMap([startOfSourceMap]) Returns the string representation of this tree of source nodes, plus a SourceMapGenerator which contains all the mappings between the generated and original sources. The arguments are the same as those to `new SourceMapGenerator`. ```js var node = new SourceNode(1, 2, "a.js", [ new SourceNode(3, 4, "b.js", "uno"), "dos", [ "tres", new SourceNode(5, 6, "c.js", "quatro") ] ]); node.toStringWithSourceMap({ file: "my-output-file.js" }) // { code: 'unodostresquatro', // map: [object SourceMapGenerator] } ``` # color-convert [](https://travis-ci.org/Qix-/color-convert) Color-convert is a color conversion library for JavaScript and node. It converts all ways between `rgb`, `hsl`, `hsv`, `hwb`, `cmyk`, `ansi`, `ansi16`, `hex` strings, and CSS `keyword`s (will round to closest): ```js var convert = require('color-convert'); convert.rgb.hsl(140, 200, 100); // [96, 48, 59] convert.keyword.rgb('blue'); // [0, 0, 255] var rgbChannels = convert.rgb.channels; // 3 var cmykChannels = convert.cmyk.channels; // 4 var ansiChannels = convert.ansi16.channels; // 1 ``` # Install ```console $ npm install color-convert ``` # API Simply get the property of the _from_ and _to_ conversion that you're looking for. All functions have a rounded and unrounded variant. By default, return values are rounded. To get the unrounded (raw) results, simply tack on `.raw` to the function. All 'from' functions have a hidden property called `.channels` that indicates the number of channels the function expects (not including alpha). ```js var convert = require('color-convert'); // Hex to LAB convert.hex.lab('DEADBF'); // [ 76, 21, -2 ] convert.hex.lab.raw('DEADBF'); // [ 75.56213190997677, 20.653827952644754, -2.290532499330533 ] // RGB to CMYK convert.rgb.cmyk(167, 255, 4); // [ 35, 0, 98, 0 ] convert.rgb.cmyk.raw(167, 255, 4); // [ 34.509803921568626, 0, 98.43137254901961, 0 ] ``` ### Arrays All functions that accept multiple arguments also support passing an array. Note that this does **not** apply to functions that convert from a color that only requires one value (e.g. `keyword`, `ansi256`, `hex`, etc.) ```js var convert = require('color-convert'); convert.rgb.hex(123, 45, 67); // '7B2D43' convert.rgb.hex([123, 45, 67]); // '7B2D43' ``` ## Routing Conversions that don't have an _explicitly_ defined conversion (in [conversions.js](conversions.js)), but can be converted by means of sub-conversions (e.g. XYZ -> **RGB** -> CMYK), are automatically routed together. This allows just about any color model supported by `color-convert` to be converted to any other model, so long as a sub-conversion path exists. This is also true for conversions requiring more than one step in between (e.g. LCH -> **LAB** -> **XYZ** -> **RGB** -> Hex). Keep in mind that extensive conversions _may_ result in a loss of precision, and exist only to be complete. For a list of "direct" (single-step) conversions, see [conversions.js](conversions.js). # Contribute If there is a new model you would like to support, or want to add a direct conversion between two existing models, please send us a pull request. # License Copyright &copy; 2011-2016, Heather Arthur and Josh Junon. Licensed under the [MIT License](LICENSE). # Polyfill for `Object.setPrototypeOf` [](https://npmjs.org/package/setprototypeof) [](https://npmjs.org/package/setprototypeof) [](https://github.com/standard/standard) A simple cross platform implementation to set the prototype of an instianted object. Supports all modern browsers and at least back to IE8. ## Usage: ``` $ npm install --save setprototypeof ``` ```javascript var setPrototypeOf = require('setprototypeof') var obj = {} setPrototypeOf(obj, { foo: function () { return 'bar' } }) obj.foo() // bar ``` TypeScript is also supported: ```typescript import setPrototypeOf from 'setprototypeof' ``` Like `chown -R`. Takes the same arguments as `fs.chown()` # near-api-js [](https://travis-ci.com/near/near-api-js) [](https://gitpod.io/#https://github.com/near/near-api-js) A JavaScript/TypeScript library for development of DApps on the NEAR platform # Documentation [Read the TypeDoc API documentation](https://near.github.io/near-api-js/) --- # Examples ## [Quick Reference](https://github.com/near/near-api-js/blob/master/examples/quick-reference.md) _(Cheat sheet / quick reference)_ ## [Cookbook](https://github.com/near/near-api-js/blob/master/examples/cookbook/README.md) _(Common use cases / more complex examples)_ --- # Contribute to this library 1. Install dependencies yarn 2. Run continuous build with: yarn build -- -w # Publish Prepare `dist` version by running: yarn dist When publishing to npm use [np](https://github.com/sindresorhus/np). --- # Integration Test Start the node by following instructions from [nearcore](https://github.com/nearprotocol/nearcore), then yarn test Tests use sample contract from `near-hello` npm package, see https://github.com/nearprotocol/near-hello # Update error schema Follow next steps: 1. [Change hash for the commit with errors in the nearcore](https://github.com/near/near-api-js/blob/master/gen_error_types.js#L7-L9) 2. Fetch new schema: `node fetch_error_schema.js` 3. `yarn build` to update `lib/**.js` files # License This repository is distributed under the terms of both the MIT license and the Apache License (Version 2.0). See [LICENSE](LICENSE) and [LICENSE-APACHE](LICENSE-APACHE) for details. NOTE: The default branch has been renamed! master is now named main If you have a local clone, you can update it by running: ```shell git branch -m master main git fetch origin git branch -u origin/main main ``` # **node-addon-api module** This module contains **header-only C++ wrapper classes** which simplify the use of the C based [Node-API](https://nodejs.org/dist/latest/docs/api/n-api.html) provided by Node.js when using C++. It provides a C++ object model and exception handling semantics with low overhead. There are three options for implementing addons: Node-API, nan, or direct use of internal V8, libuv and Node.js libraries. Unless there is a need for direct access to functionality which is not exposed by Node-API as outlined in [C/C++ addons](https://nodejs.org/dist/latest/docs/api/addons.html) in Node.js core, use Node-API. Refer to [C/C++ addons with Node-API](https://nodejs.org/dist/latest/docs/api/n-api.html) for more information on Node-API. Node-API is an ABI stable C interface provided by Node.js for building native addons. It is independent from the underlying JavaScript runtime (e.g. V8 or ChakraCore) and is maintained as part of Node.js itself. It is intended to insulate native addons from changes in the underlying JavaScript engine and allow modules compiled for one version to run on later versions of Node.js without recompilation. The `node-addon-api` module, which is not part of Node.js, preserves the benefits of the Node-API as it consists only of inline code that depends only on the stable API provided by Node-API. As such, modules built against one version of Node.js using node-addon-api should run without having to be rebuilt with newer versions of Node.js. It is important to remember that *other* Node.js interfaces such as `libuv` (included in a project via `#include <uv.h>`) are not ABI-stable across Node.js major versions. Thus, an addon must use Node-API and/or `node-addon-api` exclusively and build against a version of Node.js that includes an implementation of Node-API (meaning an active LTS version of Node.js) in order to benefit from ABI stability across Node.js major versions. Node.js provides an [ABI stability guide][] containing a detailed explanation of ABI stability in general, and the Node-API ABI stability guarantee in particular. As new APIs are added to Node-API, node-addon-api must be updated to provide wrappers for those new APIs. For this reason node-addon-api provides methods that allow callers to obtain the underlying Node-API handles so direct calls to Node-API and the use of the objects/methods provided by node-addon-api can be used together. For example, in order to be able to use an API for which the node-addon-api does not yet provide a wrapper. APIs exposed by node-addon-api are generally used to create and manipulate JavaScript values. Concepts and operations generally map to ideas specified in the **ECMA262 Language Specification**. The [Node-API Resource](https://nodejs.github.io/node-addon-examples/) offers an excellent orientation and tips for developers just getting started with Node-API and node-addon-api. - **[Setup](#setup)** - **[API Documentation](#api)** - **[Examples](#examples)** - **[Tests](#tests)** - **[More resource and info about native Addons](#resources)** - **[Badges](#badges)** - **[Code of Conduct](CODE_OF_CONDUCT.md)** - **[Contributors](#contributors)** - **[License](#license)** ## **Current version: 3.2.1** (See [CHANGELOG.md](CHANGELOG.md) for complete Changelog) [](https://nodei.co/npm/node-addon-api/) [](https://nodei.co/npm/node-addon-api/) <a name="setup"></a> node-addon-api is based on [Node-API](https://nodejs.org/api/n-api.html) and supports using different Node-API versions. This allows addons built with it to run with Node.js versions which support the targeted Node-API version. **However** the node-addon-api support model is to support only the active LTS Node.js versions. This means that every year there will be a new major which drops support for the Node.js LTS version which has gone out of service. The oldest Node.js version supported by the current version of node-addon-api is Node.js 10.x. ## Setup - [Installation and usage](doc/setup.md) - [node-gyp](doc/node-gyp.md) - [cmake-js](doc/cmake-js.md) - [Conversion tool](doc/conversion-tool.md) - [Checker tool](doc/checker-tool.md) - [Generator](doc/generator.md) - [Prebuild tools](doc/prebuild_tools.md) <a name="api"></a> ### **API Documentation** The following is the documentation for node-addon-api. - [Full Class Hierarchy](doc/hierarchy.md) - [Addon Structure](doc/addon.md) - Data Types: - [Env](doc/env.md) - [CallbackInfo](doc/callbackinfo.md) - [Reference](doc/reference.md) - [Value](doc/value.md) - [Name](doc/name.md) - [Symbol](doc/symbol.md) - [String](doc/string.md) - [Number](doc/number.md) - [Date](doc/date.md) - [BigInt](doc/bigint.md) - [Boolean](doc/boolean.md) - [External](doc/external.md) - [Object](doc/object.md) - [Array](doc/array.md) - [ObjectReference](doc/object_reference.md) - [PropertyDescriptor](doc/property_descriptor.md) - [Function](doc/function.md) - [FunctionReference](doc/function_reference.md) - [ObjectWrap](doc/object_wrap.md) - [ClassPropertyDescriptor](doc/class_property_descriptor.md) - [Buffer](doc/buffer.md) - [ArrayBuffer](doc/array_buffer.md) - [TypedArray](doc/typed_array.md) - [TypedArrayOf](doc/typed_array_of.md) - [DataView](doc/dataview.md) - [Error Handling](doc/error_handling.md) - [Error](doc/error.md) - [TypeError](doc/type_error.md) - [RangeError](doc/range_error.md) - [Object Lifetime Management](doc/object_lifetime_management.md) - [HandleScope](doc/handle_scope.md) - [EscapableHandleScope](doc/escapable_handle_scope.md) - [Memory Management](doc/memory_management.md) - [Async Operations](doc/async_operations.md) - [AsyncWorker](doc/async_worker.md) - [AsyncContext](doc/async_context.md) - [AsyncWorker Variants](doc/async_worker_variants.md) - [Thread-safe Functions](doc/threadsafe.md) - [ThreadSafeFunction](doc/threadsafe_function.md) - [TypedThreadSafeFunction](doc/typed_threadsafe_function.md) - [Promises](doc/promises.md) - [Version management](doc/version_management.md) <a name="examples"></a> ### **Examples** Are you new to **node-addon-api**? Take a look at our **[examples](https://github.com/nodejs/node-addon-examples)** - **[Hello World](https://github.com/nodejs/node-addon-examples/tree/HEAD/1_hello_world/node-addon-api)** - **[Pass arguments to a function](https://github.com/nodejs/node-addon-examples/tree/HEAD/2_function_arguments/node-addon-api)** - **[Callbacks](https://github.com/nodejs/node-addon-examples/tree/HEAD/3_callbacks/node-addon-api)** - **[Object factory](https://github.com/nodejs/node-addon-examples/tree/HEAD/4_object_factory/node-addon-api)** - **[Function factory](https://github.com/nodejs/node-addon-examples/tree/HEAD/5_function_factory/node-addon-api)** - **[Wrapping C++ Object](https://github.com/nodejs/node-addon-examples/tree/HEAD/6_object_wrap/node-addon-api)** - **[Factory of wrapped object](https://github.com/nodejs/node-addon-examples/tree/HEAD/7_factory_wrap/node-addon-api)** - **[Passing wrapped object around](https://github.com/nodejs/node-addon-examples/tree/HEAD/8_passing_wrapped/node-addon-api)** <a name="tests"></a> ### **Tests** To run the **node-addon-api** tests do: ``` npm install npm test ``` To avoid testing the deprecated portions of the API run ``` npm install npm test --disable-deprecated ``` To run the tests targeting a specific version of Node-API run ``` npm install export NAPI_VERSION=X npm test --NAPI_VERSION=X ``` where X is the version of Node-API you want to target. ### **Debug** To run the **node-addon-api** tests with `--debug` option: ``` npm run-script dev ``` If you want faster build, you might use the following option: ``` npm run-script dev:incremental ``` Take a look and get inspired by our **[test suite](https://github.com/nodejs/node-addon-api/tree/HEAD/test)** ### **Benchmarks** You can run the available benchmarks using the following command: ``` npm run-script benchmark ``` See [benchmark/README.md](benchmark/README.md) for more details about running and adding benchmarks. <a name="resources"></a> ### **More resource and info about native Addons** - **[C++ Addons](https://nodejs.org/dist/latest/docs/api/addons.html)** - **[Node-API](https://nodejs.org/dist/latest/docs/api/n-api.html)** - **[Node-API - Next Generation Node API for Native Modules](https://youtu.be/-Oniup60Afs)** - **[How We Migrated Realm JavaScript From NAN to Node-API](https://developer.mongodb.com/article/realm-javascript-nan-to-n-api)** As node-addon-api's core mission is to expose the plain C Node-API as C++ wrappers, tools that facilitate n-api/node-addon-api providing more convenient patterns on developing a Node.js add-ons with n-api/node-addon-api can be published to NPM as standalone packages. It is also recommended to tag such packages with `node-addon-api` to provide more visibility to the community. Quick links to NPM searches: [keywords:node-addon-api](https://www.npmjs.com/search?q=keywords%3Anode-addon-api). <a name="other-bindings"></a> ### **Other bindings** - **[napi-rs](https://napi.rs)** - (`Rust`) <a name="badges"></a> ### **Badges** The use of badges is recommended to indicate the minimum version of Node-API required for the module. This helps to determine which Node.js major versions are supported. Addon maintainers can consult the [Node-API support matrix][] to determine which Node.js versions provide a given Node-API version. The following badges are available:          ## **Contributing** We love contributions from the community to **node-addon-api**! See [CONTRIBUTING.md](CONTRIBUTING.md) for more details on our philosophy around extending this module. <a name="contributors"></a> ## Team members ### Active | Name | GitHub Link | | ------------------- | ----------------------------------------------------- | | Anna Henningsen | [addaleax](https://github.com/addaleax) | | Chengzhong Wu | [legendecas](https://github.com/legendecas) | | Gabriel Schulhof | [gabrielschulhof](https://github.com/gabrielschulhof) | | Jim Schlight | [jschlight](https://github.com/jschlight) | | Michael Dawson | [mhdawson](https://github.com/mhdawson) | | Kevin Eady | [KevinEady](https://github.com/KevinEady) | Nicola Del Gobbo | [NickNaso](https://github.com/NickNaso) | ### Emeritus | Name | GitHub Link | | ------------------- | ----------------------------------------------------- | | Arunesh Chandra | [aruneshchandra](https://github.com/aruneshchandra) | | Benjamin Byholm | [kkoopa](https://github.com/kkoopa) | | Jason Ginchereau | [jasongin](https://github.com/jasongin) | | Hitesh Kanwathirtha | [digitalinfinity](https://github.com/digitalinfinity) | | Sampson Gao | [sampsongao](https://github.com/sampsongao) | | Taylor Woll | [boingoing](https://github.com/boingoing) | <a name="license"></a> Licensed under [MIT](./LICENSE.md) [ABI stability guide]: https://nodejs.org/en/docs/guides/abi-stability/ [Node-API support matrix]: https://nodejs.org/dist/latest/docs/api/n-api.html#n_api_n_api_version_matrix # y18n [![NPM version][npm-image]][npm-url] [![js-standard-style][standard-image]][standard-url] [](https://conventionalcommits.org) The bare-bones internationalization library used by yargs. Inspired by [i18n](https://www.npmjs.com/package/i18n). ## Examples _simple string translation:_ ```js const __ = require('y18n')().__; console.log(__('my awesome string %s', 'foo')); ``` output: `my awesome string foo` _using tagged template literals_ ```js const __ = require('y18n')().__; const str = 'foo'; console.log(__`my awesome string ${str}`); ``` output: `my awesome string foo` _pluralization support:_ ```js const __n = require('y18n')().__n; console.log(__n('one fish %s', '%d fishes %s', 2, 'foo')); ``` output: `2 fishes foo` ## Deno Example As of `v5` `y18n` supports [Deno](https://github.com/denoland/deno): ```typescript import y18n from "https://deno.land/x/y18n/deno.ts"; const __ = y18n({ locale: 'pirate', directory: './test/locales' }).__ console.info(__`Hi, ${'Ben'} ${'Coe'}!`) ``` You will need to run with `--allow-read` to load alternative locales. ## JSON Language Files The JSON language files should be stored in a `./locales` folder. File names correspond to locales, e.g., `en.json`, `pirate.json`. When strings are observed for the first time they will be added to the JSON file corresponding to the current locale. ## Methods ### require('y18n')(config) Create an instance of y18n with the config provided, options include: * `directory`: the locale directory, default `./locales`. * `updateFiles`: should newly observed strings be updated in file, default `true`. * `locale`: what locale should be used. * `fallbackToLanguage`: should fallback to a language-only file (e.g. `en.json`) be allowed if a file matching the locale does not exist (e.g. `en_US.json`), default `true`. ### y18n.\_\_(str, arg, arg, arg) Print a localized string, `%s` will be replaced with `arg`s. This function can also be used as a tag for a template literal. You can use it like this: <code>__&#96;hello ${'world'}&#96;</code>. This will be equivalent to `__('hello %s', 'world')`. ### y18n.\_\_n(singularString, pluralString, count, arg, arg, arg) Print a localized string with appropriate pluralization. If `%d` is provided in the string, the `count` will replace this placeholder. ### y18n.setLocale(str) Set the current locale being used. ### y18n.getLocale() What locale is currently being used? ### y18n.updateLocale(obj) Update the current locale with the key value pairs in `obj`. ## Supported Node.js Versions Libraries in this ecosystem make a best effort to track [Node.js' release schedule](https://nodejs.org/en/about/releases/). Here's [a post on why we think this is important](https://medium.com/the-node-js-collection/maintainers-should-consider-following-node-js-release-schedule-ab08ed4de71a). ## License ISC [npm-url]: https://npmjs.org/package/y18n [npm-image]: https://img.shields.io/npm/v/y18n.svg [standard-image]: https://img.shields.io/badge/code%20style-standard-brightgreen.svg [standard-url]: https://github.com/feross/standard # require-main-filename [](https://travis-ci.org/yargs/require-main-filename) [](https://coveralls.io/r/yargs/require-main-filename?branch=master) [](https://www.npmjs.com/package/require-main-filename) `require.main.filename` is great for figuring out the entry point for the current application. This can be combined with a module like [pkg-conf](https://www.npmjs.com/package/pkg-conf) to, _as if by magic_, load top-level configuration. Unfortunately, `require.main.filename` sometimes fails when an application is executed with an alternative process manager, e.g., [iisnode](https://github.com/tjanczuk/iisnode). `require-main-filename` is a shim that addresses this problem. ## Usage ```js var main = require('require-main-filename')() // use main as an alternative to require.main.filename. ``` ## License ISC # whatwg-url whatwg-url is a full implementation of the WHATWG [URL Standard](https://url.spec.whatwg.org/). It can be used standalone, but it also exposes a lot of the internal algorithms that are useful for integrating a URL parser into a project like [jsdom](https://github.com/tmpvar/jsdom). ## Specification conformance whatwg-url is currently up to date with the URL spec up to commit [7ae1c69](https://github.com/whatwg/url/commit/7ae1c691c96f0d82fafa24c33aa1e8df9ffbf2bc). For `file:` URLs, whose [origin is left unspecified](https://url.spec.whatwg.org/#concept-url-origin), whatwg-url chooses to use a new opaque origin (which serializes to `"null"`). ## API ### The `URL` and `URLSearchParams` classes The main API is provided by the [`URL`](https://url.spec.whatwg.org/#url-class) and [`URLSearchParams`](https://url.spec.whatwg.org/#interface-urlsearchparams) exports, which follows the spec's behavior in all ways (including e.g. `USVString` conversion). Most consumers of this library will want to use these. ### Low-level URL Standard API The following methods are exported for use by places like jsdom that need to implement things like [`HTMLHyperlinkElementUtils`](https://html.spec.whatwg.org/#htmlhyperlinkelementutils). They mostly operate on or return an "internal URL" or ["URL record"](https://url.spec.whatwg.org/#concept-url) type. - [URL parser](https://url.spec.whatwg.org/#concept-url-parser): `parseURL(input, { baseURL, encodingOverride })` - [Basic URL parser](https://url.spec.whatwg.org/#concept-basic-url-parser): `basicURLParse(input, { baseURL, encodingOverride, url, stateOverride })` - [URL serializer](https://url.spec.whatwg.org/#concept-url-serializer): `serializeURL(urlRecord, excludeFragment)` - [Host serializer](https://url.spec.whatwg.org/#concept-host-serializer): `serializeHost(hostFromURLRecord)` - [Serialize an integer](https://url.spec.whatwg.org/#serialize-an-integer): `serializeInteger(number)` - [Origin](https://url.spec.whatwg.org/#concept-url-origin) [serializer](https://html.spec.whatwg.org/multipage/origin.html#ascii-serialisation-of-an-origin): `serializeURLOrigin(urlRecord)` - [Set the username](https://url.spec.whatwg.org/#set-the-username): `setTheUsername(urlRecord, usernameString)` - [Set the password](https://url.spec.whatwg.org/#set-the-password): `setThePassword(urlRecord, passwordString)` - [Cannot have a username/password/port](https://url.spec.whatwg.org/#cannot-have-a-username-password-port): `cannotHaveAUsernamePasswordPort(urlRecord)` - [Percent decode](https://url.spec.whatwg.org/#percent-decode): `percentDecode(buffer)` The `stateOverride` parameter is one of the following strings: - [`"scheme start"`](https://url.spec.whatwg.org/#scheme-start-state) - [`"scheme"`](https://url.spec.whatwg.org/#scheme-state) - [`"no scheme"`](https://url.spec.whatwg.org/#no-scheme-state) - [`"special relative or authority"`](https://url.spec.whatwg.org/#special-relative-or-authority-state) - [`"path or authority"`](https://url.spec.whatwg.org/#path-or-authority-state) - [`"relative"`](https://url.spec.whatwg.org/#relative-state) - [`"relative slash"`](https://url.spec.whatwg.org/#relative-slash-state) - [`"special authority slashes"`](https://url.spec.whatwg.org/#special-authority-slashes-state) - [`"special authority ignore slashes"`](https://url.spec.whatwg.org/#special-authority-ignore-slashes-state) - [`"authority"`](https://url.spec.whatwg.org/#authority-state) - [`"host"`](https://url.spec.whatwg.org/#host-state) - [`"hostname"`](https://url.spec.whatwg.org/#hostname-state) - [`"port"`](https://url.spec.whatwg.org/#port-state) - [`"file"`](https://url.spec.whatwg.org/#file-state) - [`"file slash"`](https://url.spec.whatwg.org/#file-slash-state) - [`"file host"`](https://url.spec.whatwg.org/#file-host-state) - [`"path start"`](https://url.spec.whatwg.org/#path-start-state) - [`"path"`](https://url.spec.whatwg.org/#path-state) - [`"cannot-be-a-base-URL path"`](https://url.spec.whatwg.org/#cannot-be-a-base-url-path-state) - [`"query"`](https://url.spec.whatwg.org/#query-state) - [`"fragment"`](https://url.spec.whatwg.org/#fragment-state) The URL record type has the following API: - [`scheme`](https://url.spec.whatwg.org/#concept-url-scheme) - [`username`](https://url.spec.whatwg.org/#concept-url-username) - [`password`](https://url.spec.whatwg.org/#concept-url-password) - [`host`](https://url.spec.whatwg.org/#concept-url-host) - [`port`](https://url.spec.whatwg.org/#concept-url-port) - [`path`](https://url.spec.whatwg.org/#concept-url-path) (as an array) - [`query`](https://url.spec.whatwg.org/#concept-url-query) - [`fragment`](https://url.spec.whatwg.org/#concept-url-fragment) - [`cannotBeABaseURL`](https://url.spec.whatwg.org/#url-cannot-be-a-base-url-flag) (as a boolean) These properties should be treated with care, as in general changing them will cause the URL record to be in an inconsistent state until the appropriate invocation of `basicURLParse` is used to fix it up. You can see examples of this in the URL Standard, where there are many step sequences like "4. Set context object’s url’s fragment to the empty string. 5. Basic URL parse _input_ with context object’s url as _url_ and fragment state as _state override_." In between those two steps, a URL record is in an unusable state. The return value of "failure" in the spec is represented by `null`. That is, functions like `parseURL` and `basicURLParse` can return _either_ a URL record _or_ `null`. ## Development instructions First, install [Node.js](https://nodejs.org/). Then, fetch the dependencies of whatwg-url, by running from this directory: npm install To run tests: npm test To generate a coverage report: npm run coverage To build and run the live viewer: npm run build npm run build-live-viewer Serve the contents of the `live-viewer` directory using any web server. ## Supporting whatwg-url The jsdom project (including whatwg-url) is a community-driven project maintained by a team of [volunteers](https://github.com/orgs/jsdom/people). You could support us by: - [Getting professional support for whatwg-url](https://tidelift.com/subscription/pkg/npm-whatwg-url?utm_source=npm-whatwg-url&utm_medium=referral&utm_campaign=readme) as part of a Tidelift subscription. Tidelift helps making open source sustainable for us while giving teams assurances for maintenance, licensing, and security. - Contributing directly to the project. # md5.js [](https://www.npmjs.org/package/md5.js) [](https://travis-ci.org/crypto-browserify/md5.js) [](https://david-dm.org/crypto-browserify/md5.js#info=dependencies) [](https://github.com/feross/standard) Node style `md5` on pure JavaScript. From [NIST SP 800-131A][1]: *md5 is no longer acceptable where collision resistance is required such as digital signatures.* ## Example ```js var MD5 = require('md5.js') console.log(new MD5().update('42').digest('hex')) // => a1d0c6e83f027327d8461063f4ac58a6 var md5stream = new MD5() md5stream.end('42') console.log(md5stream.read().toString('hex')) // => a1d0c6e83f027327d8461063f4ac58a6 ``` ## LICENSE [MIT](LICENSE) [1]: http://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-131Ar1.pdf # toidentifier [![NPM Version][npm-image]][npm-url] [![NPM Downloads][downloads-image]][downloads-url] [![Build Status][github-actions-ci-image]][github-actions-ci-url] [![Test Coverage][codecov-image]][codecov-url] > Convert a string of words to a JavaScript identifier ## Install This is a [Node.js](https://nodejs.org/en/) module available through the [npm registry](https://www.npmjs.com/). Installation is done using the [`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally): ```bash $ npm install toidentifier ``` ## Example ```js var toIdentifier = require('toidentifier') console.log(toIdentifier('Bad Request')) // => "BadRequest" ``` ## API This CommonJS module exports a single default function: `toIdentifier`. ### toIdentifier(string) Given a string as the argument, it will be transformed according to the following rules and the new string will be returned: 1. Split into words separated by space characters (`0x20`). 2. Upper case the first character of each word. 3. Join the words together with no separator. 4. Remove all non-word (`[0-9a-z_]`) characters. ## License [MIT](LICENSE) [codecov-image]: https://img.shields.io/codecov/c/github/component/toidentifier.svg [codecov-url]: https://codecov.io/gh/component/toidentifier [downloads-image]: https://img.shields.io/npm/dm/toidentifier.svg [downloads-url]: https://npmjs.org/package/toidentifier [github-actions-ci-image]: https://img.shields.io/github/workflow/status/component/toidentifier/ci/master?label=ci [github-actions-ci-url]: https://github.com/component/toidentifier?query=workflow%3Aci [npm-image]: https://img.shields.io/npm/v/toidentifier.svg [npm-url]: https://npmjs.org/package/toidentifier ## [npm]: https://www.npmjs.com/ [yarn]: https://yarnpkg.com/ # Web IDL Type Conversions on JavaScript Values This package implements, in JavaScript, the algorithms to convert a given JavaScript value according to a given [Web IDL](http://heycam.github.io/webidl/) [type](http://heycam.github.io/webidl/#idl-types). The goal is that you should be able to write code like ```js "use strict"; const conversions = require("webidl-conversions"); function doStuff(x, y) { x = conversions["boolean"](x); y = conversions["unsigned long"](y); // actual algorithm code here } ``` and your function `doStuff` will behave the same as a Web IDL operation declared as ```webidl void doStuff(boolean x, unsigned long y); ``` ## API This package's main module's default export is an object with a variety of methods, each corresponding to a different Web IDL type. Each method, when invoked on a JavaScript value, will give back the new JavaScript value that results after passing through the Web IDL conversion rules. (See below for more details on what that means.) Alternately, the method could throw an error, if the Web IDL algorithm is specified to do so: for example `conversions["float"](NaN)` [will throw a `TypeError`](http://heycam.github.io/webidl/#es-float). Each method also accepts a second, optional, parameter for miscellaneous options. For conversion methods that throw errors, a string option `{ context }` may be provided to provide more information in the error message. (For example, `conversions["float"](NaN, { context: "Argument 1 of Interface's operation" })` will throw an error with message `"Argument 1 of Interface's operation is not a finite floating-point value."`) Specific conversions may also accept other options, the details of which can be found below. ## Conversions implemented Conversions for all of the basic types from the Web IDL specification are implemented: - [`any`](https://heycam.github.io/webidl/#es-any) - [`void`](https://heycam.github.io/webidl/#es-void) - [`boolean`](https://heycam.github.io/webidl/#es-boolean) - [Integer types](https://heycam.github.io/webidl/#es-integer-types), which can additionally be provided the boolean options `{ clamp, enforceRange }` as a second parameter - [`float`](https://heycam.github.io/webidl/#es-float), [`unrestricted float`](https://heycam.github.io/webidl/#es-unrestricted-float) - [`double`](https://heycam.github.io/webidl/#es-double), [`unrestricted double`](https://heycam.github.io/webidl/#es-unrestricted-double) - [`DOMString`](https://heycam.github.io/webidl/#es-DOMString), which can additionally be provided the boolean option `{ treatNullAsEmptyString }` as a second parameter - [`ByteString`](https://heycam.github.io/webidl/#es-ByteString), [`USVString`](https://heycam.github.io/webidl/#es-USVString) - [`object`](https://heycam.github.io/webidl/#es-object) - [`Error`](https://heycam.github.io/webidl/#es-Error) - [Buffer source types](https://heycam.github.io/webidl/#es-buffer-source-types) Additionally, for convenience, the following derived type definitions are implemented: - [`ArrayBufferView`](https://heycam.github.io/webidl/#ArrayBufferView) - [`BufferSource`](https://heycam.github.io/webidl/#BufferSource) - [`DOMTimeStamp`](https://heycam.github.io/webidl/#DOMTimeStamp) - [`Function`](https://heycam.github.io/webidl/#Function) - [`VoidFunction`](https://heycam.github.io/webidl/#VoidFunction) (although it will not censor the return type) Derived types, such as nullable types, promise types, sequences, records, etc. are not handled by this library. You may wish to investigate the [webidl2js](https://github.com/jsdom/webidl2js) project. ### A note on the `long long` types The `long long` and `unsigned long long` Web IDL types can hold values that cannot be stored in JavaScript numbers, so the conversion is imperfect. For example, converting the JavaScript number `18446744073709552000` to a Web IDL `long long` is supposed to produce the Web IDL value `-18446744073709551232`. Since we are representing our Web IDL values in JavaScript, we can't represent `-18446744073709551232`, so we instead the best we could do is `-18446744073709552000` as the output. This library actually doesn't even get that far. Producing those results would require doing accurate modular arithmetic on 64-bit intermediate values, but JavaScript does not make this easy. We could pull in a big-integer library as a dependency, but in lieu of that, we for now have decided to just produce inaccurate results if you pass in numbers that are not strictly between `Number.MIN_SAFE_INTEGER` and `Number.MAX_SAFE_INTEGER`. ## Background What's actually going on here, conceptually, is pretty weird. Let's try to explain. Web IDL, as part of its madness-inducing design, has its own type system. When people write algorithms in web platform specs, they usually operate on Web IDL values, i.e. instances of Web IDL types. For example, if they were specifying the algorithm for our `doStuff` operation above, they would treat `x` as a Web IDL value of [Web IDL type `boolean`](http://heycam.github.io/webidl/#idl-boolean). Crucially, they would _not_ treat `x` as a JavaScript variable whose value is either the JavaScript `true` or `false`. They're instead working in a different type system altogether, with its own rules. Separately from its type system, Web IDL defines a ["binding"](http://heycam.github.io/webidl/#ecmascript-binding) of the type system into JavaScript. This contains rules like: when you pass a JavaScript value to the JavaScript method that manifests a given Web IDL operation, how does that get converted into a Web IDL value? For example, a JavaScript `true` passed in the position of a Web IDL `boolean` argument becomes a Web IDL `true`. But, a JavaScript `true` passed in the position of a [Web IDL `unsigned long`](http://heycam.github.io/webidl/#idl-unsigned-long) becomes a Web IDL `1`. And so on. Finally, we have the actual implementation code. This is usually C++, although these days [some smart people are using Rust](https://github.com/servo/servo). The implementation, of course, has its own type system. So when they implement the Web IDL algorithms, they don't actually use Web IDL values, since those aren't "real" outside of specs. Instead, implementations apply the Web IDL binding rules in such a way as to convert incoming JavaScript values into C++ values. For example, if code in the browser called `doStuff(true, true)`, then the implementation code would eventually receive a C++ `bool` containing `true` and a C++ `uint32_t` containing `1`. The upside of all this is that implementations can abstract all the conversion logic away, letting Web IDL handle it, and focus on implementing the relevant methods in C++ with values of the correct type already provided. That is payoff of Web IDL, in a nutshell. And getting to that payoff is the goal of _this_ project—but for JavaScript implementations, instead of C++ ones. That is, this library is designed to make it easier for JavaScript developers to write functions that behave like a given Web IDL operation. So conceptually, the conversion pipeline, which in its general form is JavaScript values ↦ Web IDL values ↦ implementation-language values, in this case becomes JavaScript values ↦ Web IDL values ↦ JavaScript values. And that intermediate step is where all the logic is performed: a JavaScript `true` becomes a Web IDL `1` in an unsigned long context, which then becomes a JavaScript `1`. ## Don't use this Seriously, why would you ever use this? You really shouldn't. Web IDL is … strange, and you shouldn't be emulating its semantics. If you're looking for a generic argument-processing library, you should find one with better rules than those from Web IDL. In general, your JavaScript should not be trying to become more like Web IDL; if anything, we should fix Web IDL to make it more like JavaScript. The _only_ people who should use this are those trying to create faithful implementations (or polyfills) of web platform interfaces defined in Web IDL. Its main consumer is the [jsdom](https://github.com/tmpvar/jsdom) project. # npmlog The logger util that npm uses. This logger is very basic. It does the logging for npm. It supports custom levels and colored output. By default, logs are written to stderr. If you want to send log messages to outputs other than streams, then you can change the `log.stream` member, or you can just listen to the events that it emits, and do whatever you want with them. # Installation ```console npm install npmlog --save ``` # Basic Usage ```javascript var log = require('npmlog') // additional stuff ---------------------------+ // message ----------+ | // prefix ----+ | | // level -+ | | | // v v v v log.info('fyi', 'I have a kitty cat: %j', myKittyCat) ``` ## log.level * {String} The level to display logs at. Any logs at or above this level will be displayed. The special level `silent` will prevent anything from being displayed ever. ## log.record * {Array} An array of all the log messages that have been entered. ## log.maxRecordSize * {Number} The maximum number of records to keep. If log.record gets bigger than 10% over this value, then it is sliced down to 90% of this value. The reason for the 10% window is so that it doesn't have to resize a large array on every log entry. ## log.prefixStyle * {Object} A style object that specifies how prefixes are styled. (See below) ## log.headingStyle * {Object} A style object that specifies how the heading is styled. (See below) ## log.heading * {String} Default: "" If set, a heading that is printed at the start of every line. ## log.stream * {Stream} Default: `process.stderr` The stream where output is written. ## log.enableColor() Force colors to be used on all messages, regardless of the output stream. ## log.disableColor() Disable colors on all messages. ## log.enableProgress() Enable the display of log activity spinner and progress bar ## log.disableProgress() Disable the display of a progress bar ## log.enableUnicode() Force the unicode theme to be used for the progress bar. ## log.disableUnicode() Disable the use of unicode in the progress bar. ## log.setGaugeTemplate(template) Set a template for outputting the progress bar. See the [gauge documentation] for details. [gauge documentation]: https://npmjs.com/package/gauge ## log.setGaugeThemeset(themes) Select a themeset to pick themes from for the progress bar. See the [gauge documentation] for details. ## log.pause() Stop emitting messages to the stream, but do not drop them. ## log.resume() Emit all buffered messages that were written while paused. ## log.log(level, prefix, message, ...) * `level` {String} The level to emit the message at * `prefix` {String} A string prefix. Set to "" to skip. * `message...` Arguments to `util.format` Emit a log message at the specified level. ## log\[level](prefix, message, ...) For example, * log.silly(prefix, message, ...) * log.verbose(prefix, message, ...) * log.info(prefix, message, ...) * log.http(prefix, message, ...) * log.warn(prefix, message, ...) * log.error(prefix, message, ...) Like `log.log(level, prefix, message, ...)`. In this way, each level is given a shorthand, so you can do `log.info(prefix, message)`. ## log.addLevel(level, n, style, disp) * `level` {String} Level indicator * `n` {Number} The numeric level * `style` {Object} Object with fg, bg, inverse, etc. * `disp` {String} Optional replacement for `level` in the output. Sets up a new level with a shorthand function and so forth. Note that if the number is `Infinity`, then setting the level to that will cause all log messages to be suppressed. If the number is `-Infinity`, then the only way to show it is to enable all log messages. ## log.newItem(name, todo, weight) * `name` {String} Optional; progress item name. * `todo` {Number} Optional; total amount of work to be done. Default 0. * `weight` {Number} Optional; the weight of this item relative to others. Default 1. This adds a new `are-we-there-yet` item tracker to the progress tracker. The object returned has the `log[level]` methods but is otherwise an `are-we-there-yet` `Tracker` object. ## log.newStream(name, todo, weight) This adds a new `are-we-there-yet` stream tracker to the progress tracker. The object returned has the `log[level]` methods but is otherwise an `are-we-there-yet` `TrackerStream` object. ## log.newGroup(name, weight) This adds a new `are-we-there-yet` tracker group to the progress tracker. The object returned has the `log[level]` methods but is otherwise an `are-we-there-yet` `TrackerGroup` object. # Events Events are all emitted with the message object. * `log` Emitted for all messages * `log.<level>` Emitted for all messages with the `<level>` level. * `<prefix>` Messages with prefixes also emit their prefix as an event. # Style Objects Style objects can have the following fields: * `fg` {String} Color for the foreground text * `bg` {String} Color for the background * `bold`, `inverse`, `underline` {Boolean} Set the associated property * `bell` {Boolean} Make a noise (This is pretty annoying, probably.) # Message Objects Every log event is emitted with a message object, and the `log.record` list contains all of them that have been created. They have the following fields: * `id` {Number} * `level` {String} * `prefix` {String} * `message` {String} Result of `util.format()` * `messageRaw` {Array} Arguments to `util.format()` # Blocking TTYs We use [`set-blocking`](https://npmjs.com/package/set-blocking) to set stderr and stdout blocking if they are tty's and have the setBlocking call. This is a work around for an issue in early versions of Node.js 6.x, which made stderr and stdout non-blocking on OSX. (They are always blocking Windows and were never blocking on Linux.) `npmlog` needs them to be blocking so that it can allow output to stdout and stderr to be interlaced. [](https://travis-ci.org/#!/adaltas/node-csv-stringify) [](https://www.npmjs.com/package/csv-stringify) [](https://www.npmjs.com/package/csv-stringify) This package is a stringifier converting records into a CSV text and implementing the Node.js [`stream.Transform` API](https://nodejs.org/api/stream.html). It also provides the easier synchronous and callback-based APIs for conveniency. It is both extremely easy to use and powerful. It was first released in 2010 and is tested against big data sets by a large community. ## Documentation * [Project homepage](http://csv.js.org/stringify/) * [API](http://csv.js.org/stringify/api/) * [Options](http://csv.js.org/stringify/options/) * [Examples](http://csv.js.org/stringify/examples/) ## Main features * Follow the Node.js streaming API * Simplicity with the optional callback API * Support for custom formatters, delimiters, quotes, escape characters and header * Support big datasets * Complete test coverage and samples for inspiration * Only 1 external dependency * to be used conjointly with `csv-generate`, `csv-parse` and `stream-transform` * MIT License ## Usage The module is built on the Node.js Stream API. For the sake of simplicity, a simple callback API is also provided. To give you a quick look, here's an example of the callback API: ```javascript const stringify = require('csv-stringify') const assert = require('assert') // import stringify from 'csv-stringify' // import assert from 'assert/strict' const input = [ [ '1', '2', '3', '4' ], [ 'a', 'b', 'c', 'd' ] ] stringify(input, function(err, output) { const expected = '1,2,3,4\na,b,c,d\n' assert.strictEqual(output, expected, `output.should.eql ${expected}`) console.log("Passed.", output) }) ``` ## Development Tests are executed with mocha. To install it, run `npm install` followed by `npm test`. It will install mocha and its dependencies in your project "node_modules" directory and run the test suite. The tests run against the CoffeeScript source files. To generate the JavaScript files, run `npm run build`. The test suite is run online with [Travis](https://travis-ci.org/#!/adaltas/node-csv-stringify). See the [Travis definition file](https://github.com/adaltas/node-csv-stringify/blob/master/.travis.yml) to view the tested Node.js version. ## Contributors * David Worms: <https://github.com/wdavidw> [csv_home]: https://github.com/adaltas/node-csv [stream_transform]: http://nodejs.org/api/stream.html#stream_class_stream_transform [examples]: http://csv.js.org/stringify/examples/ [csv]: https://github.com/adaltas/node-csv # http-errors [![NPM Version][npm-version-image]][npm-url] [![NPM Downloads][npm-downloads-image]][node-url] [![Node.js Version][node-image]][node-url] [![Build Status][ci-image]][ci-url] [![Test Coverage][coveralls-image]][coveralls-url] Create HTTP errors for Express, Koa, Connect, etc. with ease. ## Install This is a [Node.js](https://nodejs.org/en/) module available through the [npm registry](https://www.npmjs.com/). Installation is done using the [`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally): ```bash $ npm install http-errors ``` ## Example ```js var createError = require('http-errors') var express = require('express') var app = express() app.use(function (req, res, next) { if (!req.user) return next(createError(401, 'Please login to view this page.')) next() }) ``` ## API This is the current API, currently extracted from Koa and subject to change. ### Error Properties - `expose` - can be used to signal if `message` should be sent to the client, defaulting to `false` when `status` >= 500 - `headers` - can be an object of header names to values to be sent to the client, defaulting to `undefined`. When defined, the key names should all be lower-cased - `message` - the traditional error message, which should be kept short and all single line - `status` - the status code of the error, mirroring `statusCode` for general compatibility - `statusCode` - the status code of the error, defaulting to `500` ### createError([status], [message], [properties]) Create a new error object with the given message `msg`. The error object inherits from `createError.HttpError`. ```js var err = createError(404, 'This video does not exist!') ``` - `status: 500` - the status code as a number - `message` - the message of the error, defaulting to node's text for that status code. - `properties` - custom properties to attach to the object ### createError([status], [error], [properties]) Extend the given `error` object with `createError.HttpError` properties. This will not alter the inheritance of the given `error` object, and the modified `error` object is the return value. <!-- eslint-disable no-redeclare --> ```js fs.readFile('foo.txt', function (err, buf) { if (err) { if (err.code === 'ENOENT') { var httpError = createError(404, err, { expose: false }) } else { var httpError = createError(500, err) } } }) ``` - `status` - the status code as a number - `error` - the error object to extend - `properties` - custom properties to attach to the object ### createError.isHttpError(val) Determine if the provided `val` is an `HttpError`. This will return `true` if the error inherits from the `HttpError` constructor of this module or matches the "duck type" for an error this module creates. All outputs from the `createError` factory will return `true` for this function, including if an non-`HttpError` was passed into the factory. ### new createError\[code || name\](\[msg]\)) Create a new error object with the given message `msg`. The error object inherits from `createError.HttpError`. ```js var err = new createError.NotFound() ``` - `code` - the status code as a number - `name` - the name of the error as a "bumpy case", i.e. `NotFound` or `InternalServerError`. #### List of all constructors |Status Code|Constructor Name | |-----------|-----------------------------| |400 |BadRequest | |401 |Unauthorized | |402 |PaymentRequired | |403 |Forbidden | |404 |NotFound | |405 |MethodNotAllowed | |406 |NotAcceptable | |407 |ProxyAuthenticationRequired | |408 |RequestTimeout | |409 |Conflict | |410 |Gone | |411 |LengthRequired | |412 |PreconditionFailed | |413 |PayloadTooLarge | |414 |URITooLong | |415 |UnsupportedMediaType | |416 |RangeNotSatisfiable | |417 |ExpectationFailed | |418 |ImATeapot | |421 |MisdirectedRequest | |422 |UnprocessableEntity | |423 |Locked | |424 |FailedDependency | |425 |UnorderedCollection | |426 |UpgradeRequired | |428 |PreconditionRequired | |429 |TooManyRequests | |431 |RequestHeaderFieldsTooLarge | |451 |UnavailableForLegalReasons | |500 |InternalServerError | |501 |NotImplemented | |502 |BadGateway | |503 |ServiceUnavailable | |504 |GatewayTimeout | |505 |HTTPVersionNotSupported | |506 |VariantAlsoNegotiates | |507 |InsufficientStorage | |508 |LoopDetected | |509 |BandwidthLimitExceeded | |510 |NotExtended | |511 |NetworkAuthenticationRequired| ## License [MIT](LICENSE) [ci-image]: https://badgen.net/github/checks/jshttp/http-errors/master?label=ci [ci-url]: https://github.com/jshttp/http-errors/actions?query=workflow%3Aci [coveralls-image]: https://badgen.net/coveralls/c/github/jshttp/http-errors/master [coveralls-url]: https://coveralls.io/r/jshttp/http-errors?branch=master [node-image]: https://badgen.net/npm/node/http-errors [node-url]: https://nodejs.org/en/download [npm-downloads-image]: https://badgen.net/npm/dm/http-errors [npm-url]: https://npmjs.org/package/http-errors [npm-version-image]: https://badgen.net/npm/v/http-errors [travis-image]: https://badgen.net/travis/jshttp/http-errors/master [travis-url]: https://travis-ci.org/jshttp/http-errors # fill-range [](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W8YFZ425KND68) [](https://www.npmjs.com/package/fill-range) [](https://npmjs.org/package/fill-range) [](https://npmjs.org/package/fill-range) [](https://travis-ci.org/jonschlinkert/fill-range) > Fill in a range of numbers or letters, optionally passing an increment or `step` to use, or create a regex-compatible range with `options.toRegex` Please consider following this project's author, [Jon Schlinkert](https://github.com/jonschlinkert), and consider starring the project to show your :heart: and support. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save fill-range ``` ## Usage Expands numbers and letters, optionally using a `step` as the last argument. _(Numbers may be defined as JavaScript numbers or strings)_. ```js const fill = require('fill-range'); // fill(from, to[, step, options]); console.log(fill('1', '10')); //=> ['1', '2', '3', '4', '5', '6', '7', '8', '9', '10'] console.log(fill('1', '10', { toRegex: true })); //=> [1-9]|10 ``` **Params** * `from`: **{String|Number}** the number or letter to start with * `to`: **{String|Number}** the number or letter to end with * `step`: **{String|Number|Object|Function}** Optionally pass a [step](#optionsstep) to use. * `options`: **{Object|Function}**: See all available [options](#options) ## Examples By default, an array of values is returned. **Alphabetical ranges** ```js console.log(fill('a', 'e')); //=> ['a', 'b', 'c', 'd', 'e'] console.log(fill('A', 'E')); //=> [ 'A', 'B', 'C', 'D', 'E' ] ``` **Numerical ranges** Numbers can be defined as actual numbers or strings. ```js console.log(fill(1, 5)); //=> [ 1, 2, 3, 4, 5 ] console.log(fill('1', '5')); //=> [ 1, 2, 3, 4, 5 ] ``` **Negative ranges** Numbers can be defined as actual numbers or strings. ```js console.log(fill('-5', '-1')); //=> [ '-5', '-4', '-3', '-2', '-1' ] console.log(fill('-5', '5')); //=> [ '-5', '-4', '-3', '-2', '-1', '0', '1', '2', '3', '4', '5' ] ``` **Steps (increments)** ```js // numerical ranges with increments console.log(fill('0', '25', 4)); //=> [ '0', '4', '8', '12', '16', '20', '24' ] console.log(fill('0', '25', 5)); //=> [ '0', '5', '10', '15', '20', '25' ] console.log(fill('0', '25', 6)); //=> [ '0', '6', '12', '18', '24' ] // alphabetical ranges with increments console.log(fill('a', 'z', 4)); //=> [ 'a', 'e', 'i', 'm', 'q', 'u', 'y' ] console.log(fill('a', 'z', 5)); //=> [ 'a', 'f', 'k', 'p', 'u', 'z' ] console.log(fill('a', 'z', 6)); //=> [ 'a', 'g', 'm', 's', 'y' ] ``` ## Options ### options.step **Type**: `number` (formatted as a string or number) **Default**: `undefined` **Description**: The increment to use for the range. Can be used with letters or numbers. **Example(s)** ```js // numbers console.log(fill('1', '10', 2)); //=> [ '1', '3', '5', '7', '9' ] console.log(fill('1', '10', 3)); //=> [ '1', '4', '7', '10' ] console.log(fill('1', '10', 4)); //=> [ '1', '5', '9' ] // letters console.log(fill('a', 'z', 5)); //=> [ 'a', 'f', 'k', 'p', 'u', 'z' ] console.log(fill('a', 'z', 7)); //=> [ 'a', 'h', 'o', 'v' ] console.log(fill('a', 'z', 9)); //=> [ 'a', 'j', 's' ] ``` ### options.strictRanges **Type**: `boolean` **Default**: `false` **Description**: By default, `null` is returned when an invalid range is passed. Enable this option to throw a `RangeError` on invalid ranges. **Example(s)** The following are all invalid: ```js fill('1.1', '2'); // decimals not supported in ranges fill('a', '2'); // incompatible range values fill(1, 10, 'foo'); // invalid "step" argument ``` ### options.stringify **Type**: `boolean` **Default**: `undefined` **Description**: Cast all returned values to strings. By default, integers are returned as numbers. **Example(s)** ```js console.log(fill(1, 5)); //=> [ 1, 2, 3, 4, 5 ] console.log(fill(1, 5, { stringify: true })); //=> [ '1', '2', '3', '4', '5' ] ``` ### options.toRegex **Type**: `boolean` **Default**: `undefined` **Description**: Create a regex-compatible source string, instead of expanding values to an array. **Example(s)** ```js // alphabetical range console.log(fill('a', 'e', { toRegex: true })); //=> '[a-e]' // alphabetical with step console.log(fill('a', 'z', 3, { toRegex: true })); //=> 'a|d|g|j|m|p|s|v|y' // numerical range console.log(fill('1', '100', { toRegex: true })); //=> '[1-9]|[1-9][0-9]|100' // numerical range with zero padding console.log(fill('000001', '100000', { toRegex: true })); //=> '0{5}[1-9]|0{4}[1-9][0-9]|0{3}[1-9][0-9]{2}|0{2}[1-9][0-9]{3}|0[1-9][0-9]{4}|100000' ``` ### options.transform **Type**: `function` **Default**: `undefined` **Description**: Customize each value in the returned array (or [string](#optionstoRegex)). _(you can also pass this function as the last argument to `fill()`)_. **Example(s)** ```js // add zero padding console.log(fill(1, 5, value => String(value).padStart(4, '0'))); //=> ['0001', '0002', '0003', '0004', '0005'] ``` ## About <details> <summary><strong>Contributing</strong></summary> Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). </details> <details> <summary><strong>Running Tests</strong></summary> Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` </details> <details> <summary><strong>Building docs</strong></summary> _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` </details> ### Contributors | **Commits** | **Contributor** | | --- | --- | | 116 | [jonschlinkert](https://github.com/jonschlinkert) | | 4 | [paulmillr](https://github.com/paulmillr) | | 2 | [realityking](https://github.com/realityking) | | 2 | [bluelovers](https://github.com/bluelovers) | | 1 | [edorivai](https://github.com/edorivai) | | 1 | [wtgtybhertgeghgtwtg](https://github.com/wtgtybhertgeghgtwtg) | ### Author **Jon Schlinkert** * [GitHub Profile](https://github.com/jonschlinkert) * [Twitter Profile](https://twitter.com/jonschlinkert) * [LinkedIn Profile](https://linkedin.com/in/jonschlinkert) Please consider supporting me on Patreon, or [start your own Patreon page](https://patreon.com/invite/bxpbvm)! <a href="https://www.patreon.com/jonschlinkert"> <img src="https://c5.patreon.com/external/logo/become_a_patron_button@2x.png" height="50"> </a> ### License Copyright © 2019, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT License](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.8.0, on April 08, 2019._ # which-module > Find the module object for something that was require()d [](https://travis-ci.org/nexdrew/which-module) [](https://coveralls.io/github/nexdrew/which-module?branch=master) [](https://github.com/conventional-changelog/standard-version) Find the `module` object in `require.cache` for something that was `require()`d or `import`ed - essentially a reverse `require()` lookup. Useful for libs that want to e.g. lookup a filename for a module or submodule that it did not `require()` itself. ## Install and Usage ``` npm install --save which-module ``` ```js const whichModule = require('which-module') console.log(whichModule(require('something'))) // Module { // id: '/path/to/project/node_modules/something/index.js', // exports: [Function], // parent: ..., // filename: '/path/to/project/node_modules/something/index.js', // loaded: true, // children: [], // paths: [ '/path/to/project/node_modules/something/node_modules', // '/path/to/project/node_modules', // '/path/to/node_modules', // '/path/node_modules', // '/node_modules' ] } ``` ## API ### `whichModule(exported)` Return the [`module` object](https://nodejs.org/api/modules.html#modules_the_module_object), if any, that represents the given argument in the `require.cache`. `exported` can be anything that was previously `require()`d or `import`ed as a module, submodule, or dependency - which means `exported` is identical to the `module.exports` returned by this method. If `exported` did not come from the `exports` of a `module` in `require.cache`, then this method returns `null`. ## License ISC © Contributors # randexp.js randexp will generate a random string that matches a given RegExp Javascript object. [](http://travis-ci.org/fent/randexp.js) [](https://david-dm.org/fent/randexp.js) [](https://codecov.io/gh/fent/randexp.js) # Usage ```js var RandExp = require('randexp'); // supports grouping and piping new RandExp(/hello+ (world|to you)/).gen(); // => hellooooooooooooooooooo world // sets and ranges and references new RandExp(/<([a-z]\w{0,20})>foo<\1>/).gen(); // => <m5xhdg>foo<m5xhdg> // wildcard new RandExp(/random stuff: .+/).gen(); // => random stuff: l3m;Hf9XYbI [YPaxV>U*4-_F!WXQh9>;rH3i l!8.zoh?[utt1OWFQrE ^~8zEQm]~tK // ignore case new RandExp(/xxx xtreme dragon warrior xxx/i).gen(); // => xxx xtReME dRAGON warRiOR xXX // dynamic regexp shortcut new RandExp('(sun|mon|tue|wednes|thurs|fri|satur)day', 'i'); // is the same as new RandExp(new RegExp('(sun|mon|tue|wednes|thurs|fri|satur)day', 'i')); ``` If you're only going to use `gen()` once with a regexp and want slightly shorter syntax for it ```js var randexp = require('randexp').randexp; randexp(/[1-6]/); // 4 randexp('great|good( job)?|excellent'); // great ``` If you miss the old syntax ```js require('randexp').sugar(); /yes|no|maybe|i don't know/.gen(); // maybe ``` # Motivation Regular expressions are used in every language, every programmer is familiar with them. Regex can be used to easily express complex strings. What better way to generate a random string than with a language you can use to express the string you want? Thanks to [String-Random](http://search.cpan.org/~steve/String-Random-0.22/lib/String/Random.pm) for giving me the idea to make this in the first place and [randexp](https://github.com/benburkert/randexp) for the sweet `.gen()` syntax. # Default Range The default generated character range includes printable ASCII. In order to add or remove characters, a `defaultRange` attribute is exposed. you can `subtract(from, to)` and `add(from, to)` ```js var randexp = new RandExp(/random stuff: .+/); randexp.defaultRange.subtract(32, 126); randexp.defaultRange.add(0, 65535); randexp.gen(); // => random stuff: 湐箻ໜ䫴␩⶛㳸長���邓蕲뤀쑡篷皇硬剈궦佔칗븛뀃匫鴔事좍ﯣ⭼ꝏ䭍詳蒂䥂뽭 ``` # Custom PRNG The default randomness is provided by `Math.random()`. If you need to use a seedable or cryptographic PRNG, you can override `RandExp.prototype.randInt` or `randexp.randInt` (where `randexp` is an instance of `RandExp`). `randInt(from, to)` accepts an inclusive range and returns a randomly selected number within that range. # Infinite Repetitionals Repetitional tokens such as `*`, `+`, and `{3,}` have an infinite max range. In this case, randexp looks at its min and adds 100 to it to get a useable max value. If you want to use another int other than 100 you can change the `max` property in `RandExp.prototype` or the RandExp instance. ```js var randexp = new RandExp(/no{1,}/); randexp.max = 1000000; ``` With `RandExp.sugar()` ```js var regexp = /(hi)*/; regexp.max = 1000000; ``` # Bad Regular Expressions There are some regular expressions which can never match any string. * Ones with badly placed positionals such as `/a^/` and `/$c/m`. Randexp will ignore positional tokens. * Back references to non-existing groups like `/(a)\1\2/`. Randexp will ignore those references, returning an empty string for them. If the group exists only after the reference is used such as in `/\1 (hey)/`, it will too be ignored. * Custom negated character sets with two sets inside that cancel each other out. Example: `/[^\w\W]/`. If you give this to randexp, it will return an empty string for this set since it can't match anything. # Projects based on randexp.js ## JSON-Schema Faker Use generators to populate JSON Schema samples. See: [jsf on github](https://github.com/json-schema-faker/json-schema-faker/) and [jsf demo page](http://json-schema-faker.js.org/). # Install ### Node.js npm install randexp ### Browser Download the [minified version](https://github.com/fent/randexp.js/releases) from the latest release. # Tests Tests are written with [mocha](https://mochajs.org) ```bash npm test ``` # License MIT node-bindings ============= ### Helper module for loading your native module's `.node` file This is a helper module for authors of Node.js native addon modules. It is basically the "swiss army knife" of `require()`ing your native module's `.node` file. Throughout the course of Node's native addon history, addons have ended up being compiled in a variety of different places, depending on which build tool and which version of node was used. To make matters worse, now the `gyp` build tool can produce either a __Release__ or __Debug__ build, each being built into different locations. This module checks _all_ the possible locations that a native addon would be built at, and returns the first one that loads successfully. Installation ------------ Install with `npm`: ``` bash $ npm install --save bindings ``` Or add it to the `"dependencies"` section of your `package.json` file. Example ------- `require()`ing the proper bindings file for the current node version, platform and architecture is as simple as: ``` js var bindings = require('bindings')('binding.node') // Use your bindings defined in your C files bindings.your_c_function() ``` Nice Error Output ----------------- When the `.node` file could not be loaded, `node-bindings` throws an Error with a nice error message telling you exactly what was tried. You can also check the `err.tries` Array property. ``` Error: Could not load the bindings file. Tried: → /Users/nrajlich/ref/build/binding.node → /Users/nrajlich/ref/build/Debug/binding.node → /Users/nrajlich/ref/build/Release/binding.node → /Users/nrajlich/ref/out/Debug/binding.node → /Users/nrajlich/ref/Debug/binding.node → /Users/nrajlich/ref/out/Release/binding.node → /Users/nrajlich/ref/Release/binding.node → /Users/nrajlich/ref/build/default/binding.node → /Users/nrajlich/ref/compiled/0.8.2/darwin/x64/binding.node at bindings (/Users/nrajlich/ref/node_modules/bindings/bindings.js:84:13) at Object.<anonymous> (/Users/nrajlich/ref/lib/ref.js:5:47) at Module._compile (module.js:449:26) at Object.Module._extensions..js (module.js:467:10) at Module.load (module.js:356:32) at Function.Module._load (module.js:312:12) ... ``` The searching for the `.node` file will originate from the first directory in which has a `package.json` file is found. License ------- (The MIT License) Copyright (c) 2012 Nathan Rajlich &lt;nathan@tootallnate.net&gt; Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

near-x_near-defi-recipes

.gitpod.yml README.md babel.config.js contract Cargo.toml README.md compile.js src lib.rs package.json src App.js __mocks__ fileMock.js assets logo-black.svg logo-white.svg config.js global.css index.html index.js jest.init.js main.test.js utils.js wallet login index.html

defi-demo ================== This [React] app was initialized with [create-near-app] Quick Start =========== To run this project locally: 1. Prerequisites: Make sure you've installed [Node.js] ≥ 12 2. Install dependencies: `yarn install` 3. Run the local development server: `yarn dev` (see `package.json` for a full list of `scripts` you can run with `yarn`) Now you'll have a local development environment backed by the NEAR TestNet! Go ahead and play with the app and the code. As you make code changes, the app will automatically reload. Exploring The Code ================== 1. The "backend" code lives in the `/contract` folder. See the README there for more info. 2. The frontend code lives in the `/src` folder. `/src/index.html` is a great place to start exploring. Note that it loads in `/src/index.js`, where you can learn how the frontend connects to the NEAR blockchain. 3. Tests: there are different kinds of tests for the frontend and the smart contract. See `contract/README` for info about how it's tested. The frontend code gets tested with [jest]. You can run both of these at once with `yarn run test`. Deploy ====== Every smart contract in NEAR has its [own associated account][NEAR accounts]. When you run `yarn dev`, your smart contract gets deployed to the live NEAR TestNet with a throwaway account. When you're ready to make it permanent, here's how. Step 0: Install near-cli (optional) ------------------------------------- [near-cli] is a command line interface (CLI) for interacting with the NEAR blockchain. It was installed to the local `node_modules` folder when you ran `yarn install`, but for best ergonomics you may want to install it globally: yarn install --global near-cli Or, if you'd rather use the locally-installed version, you can prefix all `near` commands with `npx` Ensure that it's installed with `near --version` (or `npx near --version`) Step 1: Create an account for the contract ------------------------------------------ Each account on NEAR can have at most one contract deployed to it. If you've already created an account such as `your-name.testnet`, you can deploy your contract to `defi-demo.your-name.testnet`. Assuming you've already created an account on [NEAR Wallet], here's how to create `defi-demo.your-name.testnet`: 1. Authorize NEAR CLI, following the commands it gives you: near login 2. Create a subaccount (replace `YOUR-NAME` below with your actual account name): near create-account defi-demo.YOUR-NAME.testnet --masterAccount YOUR-NAME.testnet Step 2: set contract name in code --------------------------------- Modify the line in `src/config.js` that sets the account name of the contract. Set it to the account id you used above. const CONTRACT_NAME = process.env.CONTRACT_NAME || 'defi-demo.YOUR-NAME.testnet' Step 3: deploy! --------------- One command: yarn deploy As you can see in `package.json`, this does two things: 1. builds & deploys smart contract to NEAR TestNet 2. builds & deploys frontend code to GitHub using [gh-pages]. This will only work if the project already has a repository set up on GitHub. Feel free to modify the `deploy` script in `package.json` to deploy elsewhere. Troubleshooting =============== On Windows, if you're seeing an error containing `EPERM` it may be related to spaces in your path. Please see [this issue](https://github.com/zkat/npx/issues/209) for more details. [React]: https://reactjs.org/ [create-near-app]: https://github.com/near/create-near-app [Node.js]: https://nodejs.org/en/download/package-manager/ [jest]: https://jestjs.io/ [NEAR accounts]: https://docs.near.org/docs/concepts/account [NEAR Wallet]: https://wallet.testnet.near.org/ [near-cli]: https://github.com/near/near-cli [gh-pages]: https://github.com/tschaub/gh-pages defi-demo Smart Contract ================== A [smart contract] written in [Rust] for an app initialized with [create-near-app] Quick Start =========== Before you compile this code, you will need to install Rust with [correct target] Exploring The Code ================== 1. The main smart contract code lives in `src/lib.rs`. You can compile it with the `./compile` script. 2. Tests: You can run smart contract tests with the `./test` script. This runs standard Rust tests using [cargo] with a `--nocapture` flag so that you can see any debug info you print to the console. [smart contract]: https://docs.near.org/docs/roles/developer/contracts/intro [Rust]: https://www.rust-lang.org/ [create-near-app]: https://github.com/near/create-near-app [correct target]: https://github.com/near/near-sdk-rs#pre-requisites [cargo]: https://doc.rust-lang.org/book/ch01-03-hello-cargo.html

frol_near-lake-nft-indexer

README.md index.ts package-lock.json package.json tsconfig.json

# near-lake-nft-indexer This is a source code for the tutorial "Building an NFT indexer" https://near-indexers.io/tutorials/lake/nft-indexer This is an indexer built on top of [near-lake-framework-js](https://github.com/near/near-lake-framework-js). It watches for the `nft_mint` following [Event Format](https://nomicon.io/Standards/EventsFormat) and prints to the relevant data to the terminal: - Some `receipt` data of the [Receipt](https://near-indexers.io/docs/data-flow-and-structures/structures/receipt) where the mint has happened - [Execution status](https://near-indexers.io/docs/data-flow-and-structures/structures/execution_outcome#executionstatusview) - [Events](https://nomicon.io/Standards/EventsFormat) itself And additionally: - Links to the NFT marketplace where you can see the minted token Example output: ``` [ { receipt: { id: '4RswuUv9mK7amJjgCPKX71W6eAa81g1z3in7xrF6SfbB', receiverId: 'x.paras.near', predecessorId: 'chubbless.near' }, status: { SuccessValue: 'IjM5ODA0MzoxIg==' }, logs: [ { standard: 'nep171', version: '1.0.0', event: 'nft_mint', data: [ { owner_id: 'chubbless.near', token_ids: [ '398043:1' ] } ] } ], links: [ 'https://paras.id/token/x.paras.near::398043/398043:1' ] } ] [ { receipt: { id: '7ayNpevmRBCgetns2q1j4L4R7qmB5dDYguYjxc7VijAW', receiverId: 'vnartistsdao.mintbase1.near', predecessorId: 'fcliver.near' }, status: { SuccessValue: '' }, logs: [ { standard: 'nep171', version: '1.0.0', event: 'nft_mint', data: [ { owner_id: 'fcliver.near', token_ids: [ '202' ], memo: '{"royalty":{"split_between":{"vn-artists-dao.near":{"numerator":10000}},"percentage":{"numerator":1500}},"split_owners":null,"meta_id":"70eES-icwSw9iPIkUluMHOV055pKTTgQgTiXtwy3Xus","meta_extra":null,"minter":"fcliver.near"}' } ] } ], links: [ 'https://mintbase.io/thing/70eES-icwSw9iPIkUluMHOV055pKTTgQgTiXtwy3Xus:vnartistsdao.mintbase1.near' ] } ] ```

hasanozkul_Tas-Kagit-Makas

README.md as-pect.config.js asconfig.json assembly as_types.d.ts main.ts model.ts tsconfig.json package-lock.json package.json script.sh src index.js

# Tas-Kagit-Makas (Rock-Paper-Scissors) as a NEAR contract ## Install dependencies ``` yarn ``` ## Build and Deploy the contract ``` npx asb near dev-deploy ./out/main.wasm # save the contract id in your clipboard and send it to player 2 ``` ## How to Play 1. Player one call function `createGame` and send gameId to player 2 2. Player two call function `joinGame(gameId)` passing gameId that player one sent 3. Player one is the first to play, calling function `play(gameId, selectedItem)` with gameId, selectedItem as argument 4. Player two continues the game 5. The plays continue until someone win ## Run the game **Create a game** ``` near call <contract-id> createGame --account_id <account-id> # save the game id in your clipboard and send it to your friend ``` **Join a game (player 2)** ``` near call <contract-id> joinGame '{"gameId": <game-id>}' --account_id <account-id> ``` **Play the game** ``` near call <contract-id> play '{"gameId": <game-id>, "selectedItem": "Tas"}' --account_id <account-id> ```

here-wallet_locales

en.json id.json ru.json

Na0xmi_Curataro-

.gitpod.yml README.md backend server.js contract Cargo.toml README.md build.sh deploy.sh neardev dev-account.env src lib.rs target .rustc_info.json debug .fingerprint Inflector-7a6691166dde4b5a lib-inflector.json ahash-1311de4c4856424c lib-ahash.json ahash-49f6dd2da3dd9970 build-script-build-script-build.json ahash-d186f73aaed5493c run-build-script-build-script-build.json arrayref-341e1d3fd243aa2c lib-arrayref.json arrayvec-6bad1190cb871f6a lib-arrayvec.json arrayvec-da45460cee79769c lib-arrayvec.json autocfg-b935ab6a49925b16 lib-autocfg.json base64-5d9e91b2a4798550 lib-base64.json base64-ffa99bee5d400222 lib-base64.json bitvec-479db6711deaf49d lib-bitvec.json blake2-ef8523355dee5564 lib-blake2.json block-buffer-19e4870a03538c89 lib-block-buffer.json block-buffer-3a82b69fdb59fa98 lib-block-buffer.json borsh-derive-da2cdb63e20b0c5d lib-borsh-derive.json borsh-derive-internal-c2762649b708bc8a lib-borsh-derive-internal.json borsh-f4ea965ab1e73dd2 lib-borsh.json 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heck-87ec06535ce426fe lib-heck.json hello_near-8f6d15ffd9c7e648 test-lib-hello_near.json hex-105933f498485326 lib-hex.json iana-time-zone-0d183bb572896b93 lib-iana-time-zone.json impl-codec-2da6adccd89caf04 lib-impl-codec.json impl-trait-for-tuples-4e0a83c234ca53e3 lib-impl-trait-for-tuples.json itoa-164a1684cc767314 lib-itoa.json keccak-a003440c67b63d4a lib-keccak.json libc-1a784abb4ea0f459 lib-libc.json libc-bd48d723e8e7a4a2 run-build-script-build-script-build.json libc-d7f6612efeb4ca28 build-script-build-script-build.json memory_units-41eb372b1613611e lib-memory_units.json near-account-id-99502e2e7c301adc lib-near-account-id.json near-crypto-9f0515d482f55bc3 lib-near-crypto.json near-primitives-a05573d8f2b839fc lib-near-primitives.json near-primitives-core-cc2c487ec08c53e0 lib-near-primitives-core.json near-rpc-error-core-20a09b5a7c6a05a6 lib-near-rpc-error-core.json near-rpc-error-macro-cc60f918fda4126d lib-near-rpc-error-macro.json near-sdk-7982dbd7e5cb7262 lib-near-sdk.json 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opaque-debug-d7383d6703327da1 lib-opaque-debug.json parity-scale-codec-b33d59eaff29c4e9 lib-parity-scale-codec.json parity-scale-codec-derive-f70856e70aed8fd9 lib-parity-scale-codec-derive.json parity-secp256k1-a45c80f37febde80 build-script-build-script-build.json parity-secp256k1-d64a5a4f0632600a run-build-script-build-script-build.json parity-secp256k1-f267f1ee836ace62 lib-secp256k1.json ppv-lite86-2e8cc1a034b7c03c lib-ppv-lite86.json primitive-types-660e3a9da96735fc lib-primitive-types.json proc-macro-crate-d929a0168be57aae lib-proc-macro-crate.json proc-macro-crate-e9a8f111ca2cd458 lib-proc-macro-crate.json proc-macro2-0ebaa1be1646e3ad build-script-build-script-build.json proc-macro2-1d5795a01e73f58e lib-proc-macro2.json proc-macro2-8997eb2475e827de run-build-script-build-script-build.json quote-129c06d561223642 build-script-build-script-build.json quote-73207fa3079b3a1d lib-quote.json quote-fea490db2b282146 run-build-script-build-script-build.json radium-004173d4530cef95 run-build-script-build-script-build.json radium-aea9f8c4d2fd7425 build-script-build-script-build.json radium-e676393128a31aa7 lib-radium.json rand-02bc052413dcb9fd lib-rand.json rand-7e0d98abd29325ef lib-rand.json rand_chacha-38e8d8ec259388a6 lib-rand_chacha.json rand_chacha-adbe034f70556be6 lib-rand_chacha.json rand_core-9718563de5ec05f0 lib-rand_core.json rand_core-994a544f0f1e7044 lib-rand_core.json reed-solomon-erasure-420e6d7d0a2fcc2a build-script-build-script-build.json reed-solomon-erasure-5522aafe1de1401f lib-reed-solomon-erasure.json reed-solomon-erasure-657e7cf35073f1ce run-build-script-build-script-build.json ripemd-f3ff84c2b8700959 lib-ripemd.json rustc-hex-153632392c3c1a34 lib-rustc-hex.json rustversion-1e69518041f2861a build-script-build-script-build.json rustversion-49f2b6a66f483c43 lib-rustversion.json rustversion-57b91dc98a783e4b run-build-script-build-script-build.json ryu-00c97706ac31a465 lib-ryu.json serde-3ade2cea82dc032f lib-serde.json serde-57fcc9b9bd98c829 run-build-script-build-script-build.json serde-6012914a92ea0742 lib-serde.json serde-aacd29058433ce8a run-build-script-build-script-build.json serde-d89486a7bcc11fb9 build-script-build-script-build.json serde-dadb2dc9a911bc9d build-script-build-script-build.json serde_derive-609917b2e2900568 build-script-build-script-build.json serde_derive-6df67870a04e19c4 lib-serde_derive.json serde_derive-fa99c2b025ed3256 run-build-script-build-script-build.json serde_json-6ab6ecd6cc3f0bed run-build-script-build-script-build.json serde_json-c663b9461089f0d5 build-script-build-script-build.json serde_json-cb1fc291ded76b6e lib-serde_json.json sha2-4a60ac79ead691b9 lib-sha2.json sha2-bf82b965c09b3ebb lib-sha2.json sha3-932e03dd4bf690b3 lib-sha3.json signature-26b7d22ec3cf969b lib-signature.json smallvec-134168346c4c08ae lib-smallvec.json smart-default-4dd8ccf30a58e9d8 lib-smart-default.json static_assertions-6cb1ac880978d410 lib-static_assertions.json strum-a88d574e42b43cb0 lib-strum.json strum_macros-964fba9c88275b04 lib-strum_macros.json subtle-4e5282a069f375e4 lib-subtle.json syn-24f41b8534948d1a run-build-script-build-script-build.json syn-802fed338396d27c build-script-build-script-build.json syn-fda1c6631b642311 lib-syn.json synstructure-c89af9ad2f08f0ef lib-synstructure.json tap-7d07b30bb62dd033 lib-tap.json thiserror-b876afbf777ac970 build-script-build-script-build.json thiserror-c8a8cc4c66a35f81 run-build-script-build-script-build.json thiserror-cc74d0ff46a4b338 lib-thiserror.json thiserror-impl-b62376e55119463d lib-thiserror-impl.json time-6cd37ca8b5a0d496 lib-time.json toml-311c20268d1d10c7 lib-toml.json typenum-7ecd1dd0dfb185a1 build-script-build-script-main.json typenum-9bd0f7cbedf53369 lib-typenum.json typenum-fc4f338b2c0471c1 run-build-script-build-script-main.json uint-5fb3c32a17df0926 lib-uint.json unicode-ident-af5a002445eedd4b lib-unicode-ident.json unicode-xid-c050c0b4a34b4b95 lib-unicode-xid.json version_check-899d91af0d1c2041 lib-version_check.json wee_alloc-2d7509d6dcec1036 run-build-script-build-script-build.json wee_alloc-4e3018883c43721e lib-wee_alloc.json wee_alloc-c21daf4ea5c9d121 build-script-build-script-build.json wyz-f5064c1ee69735f0 lib-wyz.json zeroize-f4509dc5a7c40c4b lib-zeroize.json zeroize_derive-69031ff376290442 lib-zeroize_derive.json build crunchy-8c4a6cce98326590 out lib.rs num-bigint-485a8dd24aa18945 out radix_bases.rs parity-secp256k1-d64a5a4f0632600a out flag_check.c reed-solomon-erasure-657e7cf35073f1ce out table.rs thiserror-c8a8cc4c66a35f81 out probe.rs typenum-fc4f338b2c0471c1 out consts.rs op.rs tests.rs wee_alloc-2d7509d6dcec1036 out wee_alloc_static_array_backend_size_bytes.txt release .fingerprint Inflector-5b57878c378119b4 lib-inflector.json ahash-12278467a7a41164 build-script-build-script-build.json borsh-derive-037a4bd4b3df9403 lib-borsh-derive.json borsh-derive-internal-fe3da303f687732b lib-borsh-derive-internal.json borsh-schema-derive-internal-7390ce6bf0c9d03a lib-borsh-schema-derive-internal.json crunchy-a5221885eb8a7f14 build-script-build-script-build.json near-sdk-macros-4d07ea4142205352 lib-near-sdk-macros.json proc-macro-crate-a98ff8833a3cefaa lib-proc-macro-crate.json proc-macro2-8e31e84ba154e59f build-script-build-script-build.json proc-macro2-b587fdd70d261473 run-build-script-build-script-build.json proc-macro2-d99a9c67496faed1 lib-proc-macro2.json quote-393302937438fa36 build-script-build-script-build.json quote-43e14b462fe6198c run-build-script-build-script-build.json quote-46a6060f8d155847 lib-quote.json serde-7f854094e01750f0 build-script-build-script-build.json serde-d0e1cb6ef4497526 run-build-script-build-script-build.json serde-d220b68a9b61d4c2 build-script-build-script-build.json serde-d6b2d1a0cadb39dd lib-serde.json serde_derive-3aac7d00a9d06935 run-build-script-build-script-build.json serde_derive-bf9036b80a84c712 lib-serde_derive.json serde_derive-cf2e66ced7cd8586 build-script-build-script-build.json serde_json-efdbf8625dc12e57 build-script-build-script-build.json syn-61b287b717e13978 build-script-build-script-build.json syn-ad8b14cf2f409668 lib-syn.json syn-dc9123240a96c2cc run-build-script-build-script-build.json toml-7e2a41091775e15a lib-toml.json unicode-ident-fc276b4d6ef33400 lib-unicode-ident.json version_check-754b1394986d1962 lib-version_check.json wee_alloc-6fd71d0ef75361be build-script-build-script-build.json wasm32-unknown-unknown release .fingerprint ahash-5f99bd83e6ca131b lib-ahash.json ahash-aac7671bd407b0d7 run-build-script-build-script-build.json base64-8e184a6b184dfe64 lib-base64.json borsh-cb7859c9a9653401 lib-borsh.json bs58-a3216a2fd66b0044 lib-bs58.json byteorder-fcd3ea9da637aac8 lib-byteorder.json cfg-if-cae936ce3e3ef391 lib-cfg-if.json crunchy-064ff786c6b48e66 lib-crunchy.json crunchy-0ab138d331e45b32 run-build-script-build-script-build.json hashbrown-4a81ecab90c7f191 lib-hashbrown.json hello_near-00ca379cccdf6430 lib-hello_near.json hex-63228fd199397424 lib-hex.json itoa-7035280e78316cb3 lib-itoa.json memory_units-203289665df63ebc lib-memory_units.json near-sdk-87b0851af36c46cc lib-near-sdk.json near-sys-504c5c60393fa809 lib-near-sys.json once_cell-3d8abee2ceda80ba lib-once_cell.json ryu-8006c512063900d6 lib-ryu.json serde-3e1204bfd4b734d3 lib-serde.json serde-92dbca64bcdabd0c run-build-script-build-script-build.json serde_json-c6e6783b5ca27855 lib-serde_json.json serde_json-e82971d98f1d1738 run-build-script-build-script-build.json static_assertions-ebfc676bea741f0e lib-static_assertions.json uint-34ea3ca95d5231ea lib-uint.json wee_alloc-9eb5a78f766f32b0 run-build-script-build-script-build.json wee_alloc-dee6964827f50c22 lib-wee_alloc.json build crunchy-0ab138d331e45b32 out lib.rs wee_alloc-9eb5a78f766f32b0 out wee_alloc_static_array_backend_size_bytes.txt frontend .parcel-cache 2513ab81beed8c12.txt f6c2aacc42e8f766.txt App.js assets global.css logo-black.svg logo-white.svg dist index.04accddd.css index.bc0daea6.css index.html logo-black.4514ed42.svg logo-black.54439fde.svg logo-white.605d2742.svg logo-white.a7716062.svg index.html index.js near-interface.js near-wallet.js package-lock.json package.json start.sh ui-components.js integration-tests Cargo.toml src tests.rs package.json

# Hello NEAR Contract The smart contract exposes two methods to enable storing and retrieving a greeting in the NEAR network. ```rust const DEFAULT_GREETING: &str = "Hello"; #[near_bindgen] #[derive(BorshDeserialize, BorshSerialize)] pub struct Contract { greeting: String, } impl Default for Contract { fn default() -> Self { Self{greeting: DEFAULT_GREETING.to_string()} } } #[near_bindgen] impl Contract { // Public: Returns the stored greeting, defaulting to 'Hello' pub fn get_greeting(&self) -> String { return self.greeting.clone(); } // Public: Takes a greeting, such as 'howdy', and records it pub fn set_greeting(&mut self, greeting: String) { // Record a log permanently to the blockchain! log!("Saving greeting {}", greeting); self.greeting = greeting; } } ``` <br /> # Quickstart 1. Make sure you have installed [rust](https://rust.org/). 2. Install the [`NEAR CLI`](https://github.com/near/near-cli#setup) <br /> ## 1. Build and Deploy the Contract You can automatically compile and deploy the contract in the NEAR testnet by running: ```bash ./deploy.sh ``` Once finished, check the `neardev/dev-account` file to find the address in which the contract was deployed: ```bash cat ./neardev/dev-account # e.g. dev-1659899566943-21539992274727 ``` <br /> ## 2. Retrieve the Greeting `get_greeting` is a read-only method (aka `view` method). `View` methods can be called for **free** by anyone, even people **without a NEAR account**! ```bash # Use near-cli to get the greeting near view <dev-account> get_greeting ``` <br /> ## 3. Store a New Greeting `set_greeting` changes the contract's state, for which it is a `change` method. `Change` methods can only be invoked using a NEAR account, since the account needs to pay GAS for the transaction. ```bash # Use near-cli to set a new greeting near call <dev-account> set_greeting '{"message":"howdy"}' --accountId <dev-account> ``` **Tip:** If you would like to call `set_greeting` using your own account, first login into NEAR using: ```bash # Use near-cli to login your NEAR account near login ``` and then use the logged account to sign the transaction: `--accountId <your-account>`. near-blank-project ================== This app was initialized with [create-near-app] Quick Start =========== If you haven't installed dependencies during setup: npm install Build and deploy your contract to TestNet with a temporary dev account: npm run deploy Test your contract: npm test If you have a frontend, run `npm start`. This will run a dev server. Exploring The Code ================== 1. The smart-contract code lives in the `/contract` folder. See the README there for more info. In blockchain apps the smart contract is the "backend" of your app. 2. The frontend code lives in the `/frontend` folder. `/frontend/index.html` is a great place to start exploring. Note that it loads in `/frontend/index.js`, this is your entrypoint to learn how the frontend connects to the NEAR blockchain. 3. Test your contract: `npm test`, this will run the tests in `integration-tests` directory. Deploy ====== Every smart contract in NEAR has its [own associated account][NEAR accounts]. When you run `npm run deploy`, your smart contract gets deployed to the live NEAR TestNet with a temporary dev account. When you're ready to make it permanent, here's how: Step 0: Install near-cli (optional) ------------------------------------- [near-cli] is a command line interface (CLI) for interacting with the NEAR blockchain. It was installed to the local `node_modules` folder when you ran `npm install`, but for best ergonomics you may want to install it globally: npm install --global near-cli Or, if you'd rather use the locally-installed version, you can prefix all `near` commands with `npx` Ensure that it's installed with `near --version` (or `npx near --version`) Step 1: Create an account for the contract ------------------------------------------ Each account on NEAR can have at most one contract deployed to it. If you've already created an account such as `your-name.testnet`, you can deploy your contract to `near-blank-project.your-name.testnet`. Assuming you've already created an account on [NEAR Wallet], here's how to create `near-blank-project.your-name.testnet`: 1. Authorize NEAR CLI, following the commands it gives you: near login 2. Create a subaccount (replace `YOUR-NAME` below with your actual account name): near create-account near-blank-project.YOUR-NAME.testnet --masterAccount YOUR-NAME.testnet Step 2: deploy the contract --------------------------- Use the CLI to deploy the contract to TestNet with your account ID. Replace `PATH_TO_WASM_FILE` with the `wasm` that was generated in `contract` build directory. near deploy --accountId near-blank-project.YOUR-NAME.testnet --wasmFile PATH_TO_WASM_FILE Step 3: set contract name in your frontend code ----------------------------------------------- Modify the line in `src/config.js` that sets the account name of the contract. Set it to the account id you used above. const CONTRACT_NAME = process.env.CONTRACT_NAME || 'near-blank-project.YOUR-NAME.testnet' Troubleshooting =============== On Windows, if you're seeing an error containing `EPERM` it may be related to spaces in your path. Please see [this issue](https://github.com/zkat/npx/issues/209) for more details. [create-near-app]: https://github.com/near/create-near-app [Node.js]: https://nodejs.org/en/download/package-manager/ [jest]: https://jestjs.io/ [NEAR accounts]: https://docs.near.org/concepts/basics/account [NEAR Wallet]: https://wallet.testnet.near.org/ [near-cli]: https://github.com/near/near-cli [gh-pages]: https://github.com/tschaub/gh-pages

kkentup_near-design-market

.eslintrc.json README.md contract __test__ test.ava.js babel.config.json jsconfig.json package.json src design.ts index.ts report.ts utils.ts tsconfig.json package.json public index.html manifest.json robots.txt src App.css App.js App.test.js components Wallet.js marketplace AddDesign.js Design.js Designs.js utils Cover.js Loader.js Notifications.js index.css index.js logo.svg reportWebVitals.js reports report_1.txt setupTests.js utils config.js marketplace.js near.js test package-lock.json package.json test.js

# near-design-farmers'-market **developed by wife and husband** **1**\. To run this project is easy, you need run the following commands **1.1** "npm install" **1.2** "npm start" Then you can open http://localhost:3000/ to see the app. Smart contract ("designmarket.kentup.testnet") currently deployed on testnet is used by default. **2**\. Smart contract is in folder "contract" To compile the contract, you need change your directory to "contract" first. Then run "yarn build" and "yarn build". Some test cases are added in "contract/\_\_test\_\_/", you can run "yarn test" to verify if the smart contracts work as expected. **3**\. A little more about this project **4**\. Some NEAR commands for your reference **4.1** for deploying the smart contract near create-account test.designmarket.testnet --masterAccount designmarket.testnet --initialBalance 10 near deploy --accountId test.designmarket.testnet --wasmFile build/market.wasm --initFunction init --initArgs '{"owner_id": "designmarket.testnet"}' **4.2** for reviewing the currenct states near view test.designmarket.testnet get_owner '{}' near view test.designmarket.testnet get_designs '{}' near view test.designmarket.testnet get_reports '{}' near view test.designmarket.testnet get_pool_amount '{}' near view test.designmarket.testnet get_offers_by_object_id '{"object_id": "design_1"}' near view test.designmarket.testnet get_reports_by_object_id '{"object_id": "design_1"}' **4.3** for adding a new design/offer/report near call test.designmarket.testnet new_design '{"object_id": "design_1", "type": 1, "price": "100000000000000000000000", "image": "https://design.market/images/1", "deposit": "1000000000000000000000000" }' --accountId=client1.testnet --depositYocto=2000000000000000000000000 near call test.designmarket.testnet buy_design '{"object_id": "design_1"}' --depositYocto=100000000000000000000000 --accountId=client2.testnet near call test.designmarket.testnet add_offer '{"object_id": "design_1"}' --depositYocto=1000000000000000000000000 --accountId=client3.testnet near call test.designmarket.testnet new_report '{"object_id": "home_decor", "report_url": "report_1", "deposit": "500000000000000000000000"}' --depositYocto=1000000000000000000000000 --accountId=client4.testnet

here-wallet_near-swift-sdk

Package.swift README.md Sources NearSwift Account.swift AccountCreator.swift Connection.swift Contract.swift DefaultAuthService.swift KeyStores FileSystemKeyStore.swift InMemoryKeyStore.swift KeyStore.swift MergeKeyStore.swift Near.swift Providers JSONRPCProvider.swift Provider.swift Signer.swift Transaction.swift Utils AppInfo.swift Borsh BinaryReader.swift Borsh.swift BorshDecoder.swift BorshDeserialize.swift BorshEncoder.swift BorshSerialize.swift FileManager.swift FixedLengthByteArray.swift Int2x Int2X.swift UInt2X.swift KeyPair.swift Network.swift SHA256.swift Serialize.swift URL+Params.swift Web.swift WalletAccount.swift

# Near [](https://travis-ci.com/nearprotocol/near-client-ios) [](https://cocoapods.org/pods/nearclientios) [](https://github.com/nearprotocol/near-client-ios/blob/master/LICENSE) [](https://cocoapods.org/pods/nearclientios) ## Example To run the example project, clone the repo, and run `pod install` from the Example directory first. # Usage ```swift import nearclientios class ViewController: UIViewController, WalletSignInDelegate { private var walletAccount: WalletAccount? private var near: Near? override func viewDidLoad() { super.viewDidLoad() let keyStore = KeychainKeyStore(keychain: .init(service: "example.keystore")) let config = NearConfig( networkId: "testnet", // "default" for mainnet nodeUrl: URL(string: "https://rpc.testnet.near.org")!, // "https://rpc.mainnet.near.org" for mainnet masterAccount: nil, keyPath: nil, helperUrl: nil, initialBalance: nil, providerType: .jsonRPC(URL(string: "https://rpc.testnet.near.org")!), // "https://rpc.mainnet.near.org" for mainnet signerType: .inMemory(keyStore), keyStore: keyStore, contractName: nil, walletUrl: "https://wallet.testnet.near.org" // "https://wallet.near.org" for mainnet ) near = try! Near(config: config) walletAccount = try! WalletAccount(near: near!, authService: DefaultAuthService.shared) let appName = UIApplication.name ?? "signInTitle" DefaultAuthService.shared.walletSignIn = self try! await walletAccount!.requestSignIn(contractId: nil, title: appName, presentingViewController: self) } func completeSignIn(url: URL) async { try! await walletAccount?.completeSignIn(url: url) MainActor.run { //do any additional UI work on the main thread after sign in is complete } } } ``` ## Requirements nearclientios makes use of Swift's async/await and thus requires iOS 13. ## Installation ## Author NEAR Inc ## License nearclientios is available under the MIT license. See the LICENSE file for more info.

frol_near-validators-scoreboard

README.md package-lock.json package.json src aggregate-scoreboard.js collect.js

# NEAR Validators Scoreboard This is a simple implementation of a scoreboard for NEAR Validators started during the [Stake Wars Episode II](https://near.org/blog/stake-wars-episode-ii/). ## Data Collection A script fetching the stats about the validators epoch by epoch (the number of produced blocks and the number of expected blocks). Deploying it as an hour-interval cron job will produce all the necessary stats. ### Setup ``` $ npm install ``` ### Run Single run produces a JSON file with the stats for the epoch before the current. ``` $ npm run collect:previous-epoch ``` ## Data Aggregation A simple script that produces the scoreboard CSV file from the collected epoch stats. The CSV format: ``` ACCOUNT_ID,NUM_PRODUCED_BLOCKS,NUM_EXPECTED_BLOCKS,ONLINE a.betanet,99,100,99 node0,500,500,100 ``` ### Setup ``` $ npm install ``` You will also need the collected data in the current folder. ### Run ``` $ npm run aggregate:scoreboard ``` This will produce a `validators_scoreboard.csv` in the `stats` folder.

mehtaphysical_near-react-hooks

.github workflows test.yml README.md docs assets css main.css js main.js search.js enums nearenvironment.nearenvironment-1.html index.html modules.html modules hooks.html nearenvironment.html nearprovider.html package-lock.json package.json rollup.config.js src NearEnvironment.ts __tests__ config.test.js config.ts hooks.ts index.ts tsconfig.json typedoc.json

[](https://github.com/mehtaphysical/near-react-hooks/actions/workflows/test.yml) [](https://github.com/standard/ts-standard) # NEAR React Hooks Use react context and hooks to configure and interact with NEAR. [Reference Docs](https://mehtaphysical.github.io/near-react-hooks) ## Setup You'll need to install the package from npm `npm i near-react-hooks near-api-js`. Then wrap your application with the `NearProvider` passing it an environment: * `mainnet` * `testnet` * `betanet` ```js import React from 'react' import ReactDOM from 'react-dom' import { NearProvider, NearEnvironment } from 'near-react-hooks' import App from './App' ReactDOM.render( <NearProvider environment={NearEnvironment.TestNet}> <App /> </NearProvider>, document.querySelector('#root') ) ``` You can more finely tune the NEAR configuration by passing additional props no the `NearProvider`. See the docs for more information. Once the application is wrapped with the `NearProvider` your can access the NEAR connection, the NEAR wallet, and NEAR contract using react hooks from any component in the application. ```js import React, { useEffect } from 'react' import { useNear, useNearWallet, useNearContract } from 'near-react-hooks'; export default function App() { const near = useNear() const wallet = useNearWallet() const contract = useNearContract('dev-123457824879', { viewMethods: ['getCount'], changeMethods: ['decrement', 'increment'] }) useEffect(() => { if(!wallet.isSignedIn()) wallet.requestSignIn(); }, []); if(!wallet.isSignedIn()) return null; return <h1>{wallet.getAccountId()}</h1>; } ```

guxal_rust-contract-test

Cargo.toml README.md build.bat build.sh src lib.rs test.sh

# Rust Smart Contract Template ## Getting started To get started with this template: 1. Click the "Use this template" button to create a new repo based on this template 2. Update line 2 of `Cargo.toml` with your project name 3. Update line 4 of `Cargo.toml` with your project author names 4. Set up the [prerequisites](https://github.com/near/near-sdk-rs#pre-requisites) 5. Begin writing your smart contract in `src/lib.rs` 6. Test the contract `cargo test -- --nocapture` 8. Build the contract `RUSTFLAGS='-C link-arg=-s' cargo build --target wasm32-unknown-unknown --release` **Get more info at:** * [Rust Smart Contract Quick Start](https://docs.near.org/docs/develop/contracts/rust/intro) * [Rust SDK Book](https://www.near-sdk.io/)

keyko-io_contract-version-example

.github workflows build.yml Cargo.toml README.md build.rs rust-toolchain.toml src lib.rs version.rs tests test_counter.rs utils mod.rs

# Counter App This is an example project to show how the [contract-version](https://github.com/nearcomponents/contract-version) library can be used. Please check that library for more details. This contract has an internal counter that can be incremented, and also has a view method to show information gathered at compile-time. ## Live Testing Download and extract the latest [release](https://github.com/nearcomponents/contract-version-example/releases), _dev-deploy_ the `example_counter.wasm` and then `near view` the `version` method. Alternatively, you can use a live contract: ```bash near view "dev-1644939364756-75367548411779" "version" ``` output: ```json { "name": "example-counter", "semver": "0.0.2", "git_sha": "5e9df2b96ded9a80c21c0609d27c36758d2bcfca", "git_datetime": "2022-02-15 12:03:35 -0300", "git_dirty": true, "cargo_features": "default", "cargo_profile": "release", "rustc_semver": "1.56.1", "rustc_llvm": "13.0", "rustc_sha": "59eed8a2aac0230a8b53e89d4e99d55912ba6b35" } ``` ## Build Build the wasm binary: ```bash cargo build --release --target wasm32-unknown-unknown ``` ## Test After having built the wasm binary, copy them to the `res/` directory: ```bash find target/wasm32-unknown-unknown/release \ -maxdepth 1 \ -name \*.wasm \ -prune \ -exec cp {} res \; ``` Then run the simulation tests: ```bash cargo test ```

mikedotexe_rust-contract-upgrades

add-map-iterated.sh old-way Cargo.toml bloat.sh build.sh deploy.sh new.sh remake.sh src lib.rs upgrade-way Cargo.toml README.md add-version-2.sh add-version-3.sh bloat.sh build.sh clear-name.sh deploy.sh get-all.sh get-current-version.sh new.sh remake.sh remove-version-1.sh set-all.sh set-color.sh set-musician.sh set-name.sh src lib.rs version-data.sh

Reproduce: ### (Re)create account to deploy contract to near delete upgrade.mike.testnet mike.testnet ~/near/near-shell/bin/near create_account upgrade.mike.testnet --masterAccount mike.testnet ### Checkout and build git checkout version-1 ./build.sh ### Export your testnet account as an environment variable export NEAR_ACCT=mike.testnet ### Deploy ./deploy.sh ### Set Version 1 info ./new.sh ### Change name ./set-name.sh "George Costanza" ### View Version 1 info (0 indicates index of versions) ./version-data.sh 0 ### Upgrade contract to Version 2 git checkout version-2 ./build.sh ./deploy.sh ./add-version-2.sh ./version-data.sh 0 ./version-data.sh 1 ### Change current version's (Version 2) color: ./set-color.sh "pastel green" ./version-data.sh 1 ./set-musician.sh "Nilüfer Yanya" ./version-data.sh 1 ### Set all variables using setters ./set-all.sh blanka "hipster plaid red" "glitch mob" ### Get all variables using getters ./get_all.sh ### Get current version, which is usually the last item in the Vector, but can change if there are removals ./get-current-version.sh ### Add version 3 which "migrates" data from Version 1 into a new struct ./add-version-3.sh ### Remove Version 1 as it's no longer needed in storage ./remove-version-1.sh ### Regular confirmations… ./get-current-version.sh ./get_all.sh # References What is the syntax to match on a reference to an enum? - https://stackoverflow.com/a/36592628/711863 Possibly consider adding "ref" in places https://doc.rust-lang.org/stable/rust-by-example/scope/borrow/ref.html Possibly ref here: https://stackoverflow.com/a/22266744/711863 #### Upgrade: Gas cost 6,186,107,190,595 6186107190595 https://explorer.testnet.near.org/transactions/8gZtQFrCLZRgpY4PVL6BN7iUUFkKuks2DBZeC3geRmsr 100000000000000 --attached 100000000000000/6186107190595 could do 16 calls #### Old way Gas cost 5,772,080,413,987 5772080413987 https://explorer.testnet.near.org/transactions/2NmZYM18x5sVDebewLptf7fHuc3FhSVdAFcjAKPCWwJd 100000000000000 --attached 100000000000000/5772080413987 could do 17 calls 6186107190595/5772080413987 1.0717292115 Upgrade way costs 7.17% more gas per insertion

evgenykuzyakov_nft-viewer

Cargo.toml build.sh res index.html src lib.rs web4.rs

mikedotexe_near-debug-rust-u128

Cargo.toml README.md build.sh src lib.rs test.sh

There seems to be an issue with u128. Note the last three numbers change from 700 to 800 for no apparent reason. This doesn't happen in the tests. (`./test.sh`) Try: `near view debug.mike.testnet small_u '{"val": 1906293427246306700}'` and `near view debug.mike.testnet big_u '{"val": "1906293427246306700"}'`

Graate-Org_NEAR-Block-Dice-UI

README.md craco.config.js package.json public index.html manifest.json robots.txt src App.js assets arrow.svg avatar.svg create.svg dice.svg github.svg header.svg join.svg logo.svg near.svg winning.svg config.js index.css index.js utils dateFormatter.js generateAvatar.js near.js parseDateToMs.js tailwind.config.js

# Getting Started with Create React App This project was bootstrapped with [Create React App](https://github.com/facebook/create-react-app). ## Available Scripts In the project directory, you can run: ### `yarn start` Runs the app in the development mode.\ Open [http://localhost:3000](http://localhost:3000) to view it in the browser. The page will reload if you make edits.\ You will also see any lint errors in the console. ### `yarn test` Launches the test runner in the interactive watch mode.\ See the section about [running tests](https://facebook.github.io/create-react-app/docs/running-tests) for more information. ### `yarn build` Builds the app for production to the `build` folder.\ It correctly bundles React in production mode and optimizes the build for the best performance. The build is minified and the filenames include the hashes.\ Your app is ready to be deployed! See the section about [deployment](https://facebook.github.io/create-react-app/docs/deployment) for more information. ### `yarn eject` **Note: this is a one-way operation. Once you `eject`, you can’t go back!** If you aren’t satisfied with the build tool and configuration choices, you can `eject` at any time. This command will remove the single build dependency from your project. Instead, it will copy all the configuration files and the transitive dependencies (webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except `eject` will still work, but they will point to the copied scripts so you can tweak them. At this point you’re on your own. You don’t have to ever use `eject`. The curated feature set is suitable for small and middle deployments, and you shouldn’t feel obligated to use this feature. However we understand that this tool wouldn’t be useful if you couldn’t customize it when you are ready for it. ## Learn More You can learn more in the [Create React App documentation](https://facebook.github.io/create-react-app/docs/getting-started). To learn React, check out the [React documentation](https://reactjs.org/). ### Code Splitting This section has moved here: [https://facebook.github.io/create-react-app/docs/code-splitting](https://facebook.github.io/create-react-app/docs/code-splitting) ### Analyzing the Bundle Size This section has moved here: [https://facebook.github.io/create-react-app/docs/analyzing-the-bundle-size](https://facebook.github.io/create-react-app/docs/analyzing-the-bundle-size) ### Making a Progressive Web App This section has moved here: [https://facebook.github.io/create-react-app/docs/making-a-progressive-web-app](https://facebook.github.io/create-react-app/docs/making-a-progressive-web-app) ### Advanced Configuration This section has moved here: [https://facebook.github.io/create-react-app/docs/advanced-configuration](https://facebook.github.io/create-react-app/docs/advanced-configuration) ### Deployment This section has moved here: [https://facebook.github.io/create-react-app/docs/deployment](https://facebook.github.io/create-react-app/docs/deployment) ### `yarn build` fails to minify This section has moved here: [https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify](https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify)

hermes1108_near-mighty-kernel-republic-nft-smart-contract

Cargo.toml README.md build.sh neardev dev-account.env src approval.rs enumeration.rs events.rs internal.rs lib.rs metadata.rs mint.rs nft_core.rs royalty.rs util.rs target .rustc_info.json release .fingerprint Inflector-eefff05c7d46c877 lib-inflector.json borsh-derive-30826cab706fa8e6 lib-borsh-derive.json borsh-derive-internal-07074a113817bfc9 lib-borsh-derive-internal.json borsh-schema-derive-internal-868bcb10a9df64a0 lib-borsh-schema-derive-internal.json near-sdk-macros-b9adb27cba2cfd39 lib-near-sdk-macros.json proc-macro-crate-edfa432597300f83 lib-proc-macro-crate.json proc-macro2-02d8576ab8214684 run-build-script-build-script-build.json proc-macro2-dc182f065c28f8c4 build-script-build-script-build.json proc-macro2-ee244c0a276fdd6c lib-proc-macro2.json quote-7824678d1010f883 lib-quote.json ryu-46daeab0ac17a91e build-script-build-script-build.json serde-0f0a82bee875987e lib-serde.json serde-69aa6b3d77f8bfb6 build-script-build-script-build.json serde-6ef111d86725069b run-build-script-build-script-build.json serde-aa6ea5c0481a087a build-script-build-script-build.json serde_derive-4b0bf73efd96d202 build-script-build-script-build.json serde_derive-b3a4382c2259d1ae lib-serde_derive.json serde_derive-c79fb7883a53f40b run-build-script-build-script-build.json serde_json-f69eb68b425e200f build-script-build-script-build.json syn-2584b402440daf00 build-script-build-script-build.json syn-34d0cd23b80b7deb run-build-script-build-script-build.json syn-96888dd9a1479247 lib-syn.json toml-276f1a3176df5430 lib-toml.json unicode-xid-26809bafcedebcca lib-unicode-xid.json wee_alloc-56f41bf66950ca1a build-script-build-script-build.json wasm32-unknown-unknown release .fingerprint ahash-3f602f2bb35305d5 lib-ahash.json base64-0266aaf2a36d6a95 lib-base64.json borsh-6aeca0b439eb91be lib-borsh.json bs58-f4b2e40280ca61bd lib-bs58.json cfg-if-4b6f1020c71c4854 lib-cfg-if.json hashbrown-452902ff07dbf6b7 lib-hashbrown.json itoa-33b8fee2612fcb2e lib-itoa.json memory_units-a3e83b33528dff62 lib-memory_units.json near-sdk-628a0a985a750e78 lib-near-sdk.json near-sys-618ec7eacf1f9b09 lib-near-sys.json nft_simple-322841616f66c026 lib-nft_simple.json ryu-1337630bb096e090 run-build-script-build-script-build.json ryu-fcfc9347cfc122e6 lib-ryu.json serde-2854b67f541a1c52 lib-serde.json serde-8ec7d3fc7bfab743 run-build-script-build-script-build.json serde_json-04a4a39cae0030f6 run-build-script-build-script-build.json serde_json-41182def88be6b32 lib-serde_json.json wee_alloc-034861dc56ef4c30 run-build-script-build-script-build.json wee_alloc-deb6b3e0ff371f74 lib-wee_alloc.json build wee_alloc-034861dc56ef4c30 out wee_alloc_static_array_backend_size_bytes.txt

# TBD

hoangnhxda_NEARLend

.github workflows firebase-hosting-merge.yml firebase-hosting-pull-request.yml README.md backend expressjs app.js package-lock.json package.json public stylesheets style.css routes getprice.js index.js users.js views server.js duyhoag.testnet.json frontend README.md firebase.json package.json public index.html manifest.json robots.txt src App.css index.css logo.svg react-app-env.d.ts reportWebVitals.ts responsive.css setupTests.ts types images.d.ts tsconfig.json webpack.config.js git_push.sh references ft-lockup-contract trunk Cargo.toml README.md build.sh src callbacks.rs ft_token_receiver.rs internal.rs lib.rs lockup.rs schedule.rs termination.rs util.rs view.rs tests main.rs setup.rs ft-with-updatable-meta trunk Cargo.toml build.sh src lib.rs locked-ft branches ft-metadata factory Cargo.toml build.sh deploy.txt src lib.rs migrate.rs token Cargo.toml build.sh src lib.rs price_receiver.rs revert-1-ft-metadata factory Cargo.toml build.sh deploy.txt src lib.rs token Cargo.toml build.sh src lib.rs price_receiver.rs trunk factory Cargo.toml build.sh build_docker.sh deploy.txt src lib.rs migrate.rs token Cargo.toml build.sh build_docker.sh src lib.rs price_receiver.rs main Cargo.toml README.md branches farm Cargo.toml build.sh common Cargo.toml src lib.rs contract API.md Cargo.toml src account.rs account_asset.rs account_farm.rs actions.rs asset.rs asset_config.rs asset_farm.rs big_decimal.rs config.rs fungible_token.rs lib.rs pool.rs price_receiver.rs prices.rs storage.rs utils.rs views.rs scripts apr_to_rate.py test-oracle Cargo.toml src lib.rs tests main.rs improve-farm-performance Cargo.toml README.md build.sh common Cargo.toml src lib.rs contract API.md Cargo.toml src account.rs account_asset.rs account_farm.rs account_view.rs actions.rs asset.rs asset_config.rs asset_farm.rs asset_view.rs big_decimal.rs config.rs fungible_token.rs lib.rs pool.rs price_receiver.rs prices.rs storage.rs utils.rs scripts add_farms.sh apr_to_rate.py create_account.sh dev_deploy.sh mint_to_account.sh readme_test.sh sim-tests babel.config.js config.js jest.config.js package.json rest-api-dummy-data.test.js rest-api-test-utils.js rest-api.test.js utils.js test-oracle Cargo.toml src lib.rs tests main.rs tests Cargo.toml README.md build.sh common Cargo.toml src lib.rs contract API.md Cargo.toml src account.rs account_asset.rs account_farm.rs account_view.rs actions.rs asset.rs asset_config.rs asset_farm.rs asset_view.rs big_decimal.rs config.rs fungible_token.rs lib.rs pool.rs price_receiver.rs prices.rs storage.rs utils.rs scripts add_farms.sh apr_to_rate.py create_account.sh dev_deploy.sh mint_to_account.sh readme_test.sh sim-tests babel.config.js config.js jest.config.js package.json rest-api-dummy-data.test.js rest-api-test-utils.js rest-api.test.js utils.js test-oracle Cargo.toml src lib.rs tests main.rs setup.rs build.sh common Cargo.toml src lib.rs contract API.md Cargo.toml src account.rs account_asset.rs account_farm.rs account_view.rs actions.rs asset.rs asset_config.rs asset_farm.rs asset_view.rs big_decimal.rs config.rs fungible_token.rs lib.rs pool.rs price_receiver.rs prices.rs storage.rs storage_tracker.rs utils.rs scripts add_farms.sh apr_to_rate.py create_account.sh dev_deploy.sh mint_to_account.sh readme_test.sh testnet_deploy.sh sim-tests babel.config.js config.js jest.config.js package.json rest-api-dummy-data.test.js rest-api-test-utils.js rest-api.test.js utils.js test-oracle Cargo.toml src lib.rs tests basic.rs setup mod.rs upgrade.rs mint-ft mintft.rs readme.md old-contract.rs price-oracle Cargo.toml build.sh check.sh src asset.rs lib.rs oracle.rs utils.rs price Cargo.toml src main.rs wrapped-ft branches lock-unlock-transfer-restriction Cargo.toml README.md build.sh src lib.rs simplest Cargo.toml README.md build.sh src lib.rs trunk Cargo.toml README.md build.sh src lib.rs run_test.sh smart-contract Cargo.toml README.md build.sh common Cargo.toml src lib.rs contract API.md Cargo.toml src account.rs account_asset.rs account_farm.rs account_view.rs actions.rs asset.rs asset_config.rs asset_farm.rs asset_view.rs big_decimal.rs config.rs fungible_token.rs lib.rs pool.rs price_receiver.rs prices.rs storage.rs storage_tracker.rs utils.rs script-testcases 0_deploy.sh 1_deposit.sh 2_deposit_withdraw.sh 3_deposit_with_collateral.sh 4_deposit_collateral_adjust.sh 5_borrow.sh 6_borrow_repay.sh scripts add_farms.sh apr_to_rate.py create_account.sh dev_deploy.sh mint_to_account.sh readme_test.sh testnet_deploy.sh sim-tests babel.config.js config.js jest.config.js package.json rest-api-dummy-data.test.js rest-api-test-utils.js rest-api.test.js utils.js test-oracle Cargo.toml src lib.rs tests basic.rs setup mod.rs upgrade.rs sub.duyhoag.testnet.json

# Nearlend contact ## Development ### Build (optional) Requires Rust and wasm32 target. ```bash ./build.sh ``` ### Deploy on the testnet Requires NEAR CLI to be installed. ```bash ./scripts/dev_deploy.sh ``` This will provide a list of exports at the end. Execute them to get the CLI ready for further transactions. Example exports: ```bash export NEAR_ENV=testnet export OWNER_ID=dev-1634411537975-18277461139961 export ORACLE_ID=dev-1634411553736-97024242878560 export CONTRACT_ID=dev-1634411561699-94876475207945 export BOOSTER_TOKEN_ID=ref.fakes.testnet export WETH_TOKEN_ID=weth.fakes.testnet export DAI_TOKEN_ID=dai.fakes.testnet export USDT_TOKEN_ID=usdt.fakes.testnet export WNEAR_TOKEN_ID=wrap.testnet export ONE_YOCTO=0.000000000000000000000001 export GAS=200000000000000 ``` ### Create a test account Requires exports from running `dev_deploy`. ```bash ./scripts/create_account.sh ``` This will create a new test account with fake assets. Execute the export at the end to get the account ID. Example export: ```bash export ACCOUNT_ID=dev-1634680029152-10252684568108 ``` ## Actions ### Register account by paying for storage This has to be done one per account. ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=0.1 storage_deposit '{}' ``` ### Supply some token Let's supply `5` USDT. USDT has `6` decimals, so amount should be `5000000`. For a simple deposit, the `msg` can be empty string. ```bash near call $USDT_TOKEN_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=$ONE_YOCTO ft_transfer_call '{ "receiver_id": "'$CONTRACT_ID'", "amount": "5000000", "msg": "" }' ``` ### View account information ```bash near view $CONTRACT_ID get_account '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: ```javascript { account_id: 'dev-1634682124572-99167526870966', supplied: [ { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], collateral: [], borrowed: [], farms: [] } ``` Note: Since USDT asset has extra `12` decimals, it brings the 5 USDT in the balance to `5000000000000000000` ### View a given asset ```bash near view $CONTRACT_ID get_asset '{"token_id": "'$USDT_TOKEN_ID'"}' ``` Example result: ```javascript { supplied: { shares: '5000000000000000000', balance: '5000000000000000000' }, borrowed: { shares: '0', balance: '0' }, reserved: '2000000000000000000000', last_update_timestamp: '1634682347763275349', config: { reserve_ratio: 2500, target_utilization: 8000, target_utilization_rate: '1000000000002440418605283556', max_utilization_rate: '1000000000039724853136740579', volatility_ratio: 9500, extra_decimals: 12, can_deposit: true, can_withdraw: true, can_use_as_collateral: true, can_borrow: true } } ``` Note: You can also see `2000000000000000000000` reserved. That's `2000` USDT from the owner. ### Provide token as a collateral Let's add all USDT to a collateral. If the `amount` for a given action is not specified, then all available amount will be used. Increasing the collateral doesn't require prices from the oracle, because it can't decrease the existing collateral. ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=$ONE_YOCTO execute '{ "actions": [ { "IncreaseCollateral": { "token_id": "'$USDT_TOKEN_ID'" } } ] }' ``` Let's view the account info again: ```bash near view $CONTRACT_ID get_account '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: ```javascript { account_id: 'dev-1634682124572-99167526870966', supplied: [], collateral: [ { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], borrowed: [], farms: [] } ``` Note, you can see the USDT asset was moved from `supplied` to `collateral` ### Borrow a token Let's borrow `1` DAI. DAI has `18` decimals, so the amount should be `1000000000000000000`. Since borrow action puts account into the debt, we have to call this action through the oracle. The oracle should provide prices for all assets in the collateral as well as all existing borrowed assets and the new borrowed asset. The `msg` passed to the oracle should be string. Since it's part of the JSON, it has to be double-encoded and can't have newlines. FYI: The message that we pass to the contract from the oracle is the following: ```json { "Execute": { "actions": [ { "Borrow": { "token_id": "dai.fakes.testnet", "amount": "1000000000000000000" } } ] } } ``` ```bash near call $ORACLE_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=$ONE_YOCTO oracle_call '{ "receiver_id": "'$CONTRACT_ID'", "asset_ids": [ "'$USDT_TOKEN_ID'", "'$DAI_TOKEN_ID'" ], "msg": "{\"Execute\": {\"actions\": [{\"Borrow\": {\"token_id\": \"'$DAI_TOKEN_ID'\", \"amount\": \"1000000000000000000\"}}]}}" }' ``` You should see a log message like: `Account dev-1634682124572-99167526870966 borrows 1000000000000000000 of dai.fakes.testnet` Let's view the account info again: ```bash near view $CONTRACT_ID get_account '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: ```javascript { account_id: 'dev-1634682124572-99167526870966', supplied: [ { token_id: 'dai.fakes.testnet', balance: '1000000000048216105', shares: '1000000000000000000' } ], collateral: [ { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], borrowed: [ { token_id: 'dai.fakes.testnet', balance: '1000000000064288139', shares: '1000000000000000000' } ], farms: [] } ``` Note, without extra action the borrowed assets are not withdrawn to the wallet, but instead supplied to earn interest. From there they can be withdrawn. You can also notice that the borrowed balance is larger than the supplied balance, that's because the some of the interest are going to the reserve. If we view the account info again, then the balances should increase: Example result: ```javascript { account_id: 'dev-1634682124572-99167526870966', supplied: [ { token_id: 'dai.fakes.testnet', balance: '1000000000221528817', shares: '1000000000000000000' } ], collateral: [ { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], borrowed: [ { token_id: 'dai.fakes.testnet', balance: '1000000000295371755', shares: '1000000000000000000' } ], farms: [] } ``` Let's view the DAI asset info: ```bash near view $CONTRACT_ID get_asset '{"token_id": "'$DAI_TOKEN_ID'"}' ``` Example result: ```javascript { supplied: { shares: '1000000000000000000', balance: '1000000000399150907' }, borrowed: { shares: '1000000000000000000', balance: '1000000000532201209' }, reserved: '2000000000000133050302', last_update_timestamp: '1634683708614246127', config: { reserve_ratio: 2500, target_utilization: 8000, target_utilization_rate: '1000000000002440418605283556', max_utilization_rate: '1000000000039724853136740579', volatility_ratio: 9500, extra_decimals: 0, can_deposit: true, can_withdraw: true, can_use_as_collateral: true, can_borrow: true } } ``` ### Withdrawing the asset Let's withdraw all DAI including interest. Withdrawing doesn't need oracle prices, because it can only be taken from the supplied and not from the collateral. ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=$ONE_YOCTO execute '{ "actions": [ { "Withdraw": { "token_id": "'$DAI_TOKEN_ID'" } } ] }' ``` You should see the log, e.g. `Account dev-1634682124572-99167526870966 withdraws 1000000001658903820 of dai.fakes.testnet` Now let's check the DAI balance (in the wallet) of the account: ```bash near view $DAI_TOKEN_ID ft_balance_of '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: `10001000000001658903820`, which corresponds roughly to `10001` DAI, plus some extra earned interests. Withdrawal from the contract was possible, because the owner has supplied DAI into the reserve. Let's view the account info again: ```bash near view $CONTRACT_ID get_account '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: ```javascript { account_id: 'dev-1634682124572-99167526870966', supplied: [], collateral: [ { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], borrowed: [ { token_id: 'dai.fakes.testnet', balance: '1000000002496596924', shares: '1000000000000000000' } ], farms: [] } ``` Notice, there is no supplied DAI anymore. Let's view the DAI asset info: ```bash near view $CONTRACT_ID get_asset '{"token_id": "'$DAI_TOKEN_ID'"}' ``` Example result: ```javascript { supplied: { shares: '0', balance: '0' }, borrowed: { shares: '1000000000000000000', balance: '1000000002551410252' }, reserved: '2000000000000892506432', last_update_timestamp: '1634685033009246127', config: { reserve_ratio: 2500, target_utilization: 8000, target_utilization_rate: '1000000000002440418605283556', max_utilization_rate: '1000000000039724853136740579', volatility_ratio: 9500, extra_decimals: 0, can_deposit: true, can_withdraw: true, can_use_as_collateral: true, can_borrow: true } } ``` ### Deposit asset and repay it in one call. Note, multiple actions can be combined into a single atomic update. Either all of them complete or all of them are reverted. The invariants are only checked at the end, so this may be used to replace one collateral with another without repaying debts (but this requires oracle pricing). Let's deposit `5` DAI and use it to repay borrowed DAI. DAI has 18 decimal, so the amount is `5000000000000000000` For this we need to pass a custom `msg` to `ft_transfer_call`. The message has to be double-encoded into a string. FYI: Non-encoded message in JSON: ```json { "Execute": { "actions": [ { "Repay": { "token_id": "dai.fakes.testnet" } } ] } } ``` ```bash near call $DAI_TOKEN_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=$ONE_YOCTO ft_transfer_call '{ "receiver_id": "'$CONTRACT_ID'", "amount": "5000000000000000000", "msg": "{\"Execute\": {\"actions\": [{\"Repay\": {\"token_id\": \"'$DAI_TOKEN_ID'\"}}]}}" }' ``` You should see similar log messages: ``` Account dev-1634686749015-49146327775274 deposits 5000000000000000000 of dai.fakes.testnet Account dev-1634686749015-49146327775274 repays 1000000001735752696 of dai.fakes.testnet ``` Let's view the account info again: ```bash near view $CONTRACT_ID get_account '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: ```javascript { account_id: 'dev-1634686749015-49146327775274', supplied: [ { token_id: 'dai.fakes.testnet', balance: '3999999998264247304', shares: '3999999998264247304' } ], collateral: [ { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], borrowed: [], farms: [] } ``` Notice, there is no borrowed DAI anymore. Let's view the DAI asset info: ```bash near view $CONTRACT_ID get_asset '{"token_id": "'$DAI_TOKEN_ID'"}' ``` Example result: ```javascript { supplied: { shares: '3999999998264247304', balance: '3999999998264247304' }, borrowed: { shares: '0', balance: '0' }, reserved: '2000000000001727179674', last_update_timestamp: '1634688121573861187', config: { reserve_ratio: 2500, target_utilization: 8000, target_utilization_rate: '1000000000002440418605283556', max_utilization_rate: '1000000000039724853136740579', volatility_ratio: 9500, extra_decimals: 0, can_deposit: true, can_withdraw: true, can_use_as_collateral: true, can_borrow: true } } ``` And no borrowed balance or shares after repaying. ### Decreasing collateral Since there is no borrowed assets, we can take the collateral without providing prices. Let's get all USDT collateral back. ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=$ONE_YOCTO execute '{ "actions": [ { "DecreaseCollateral": { "token_id": "'$USDT_TOKEN_ID'" } } ] }' ``` Let's view the account info again: ```bash near view $CONTRACT_ID get_account '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: ```javascript { account_id: 'dev-1634686749015-49146327775274', supplied: [ { token_id: 'dai.fakes.testnet', balance: '3999999998264247304', shares: '3999999998264247304' }, { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], collateral: [], borrowed: [], farms: [] } ``` ## Example with wNEAR on testnet * `$CONTRACT_ID` - the account ID of the new token fNEAR * `$OWNER_ID` - the account ID of the controller/owner. * `wrap.testnet` - the token ID that is being wrapped/locked. wNEAR is used for the example. * `$ACCOUNT_ID` - the account ID of a test account. #### Init ```bash near call $CONTRACT_ID --accountId=$OWNER_ID new '{ "locked_token_account_id": "wrap.testnet", "meta": {"spec": "ft-1.0.0", "name": "Future NEAR", "symbol": "fNEAR", "decimals": 24}, "owner_id": "'$OWNER_ID'" }' ``` #### Wrap 20 NEAR into wNEAR (optional) ```bash near call wrap.testnet --accountId=$OWNER_ID storage_deposit '' --amount=0.00125 near call wrap.testnet --accountId=$OWNER_ID near_deposit --amount=20 ``` #### Storage deposit ```bash near call wrap.testnet --accountId=$OWNER_ID storage_deposit '{"account_id": "'$CONTRACT_ID'"}' --amount=0.00125 ``` #### Lock 10 wNEAR into fNEAR ```bash near call wrap.testnet --accountId=$OWNER_ID --depositYocto=1 --gas=100000000000000 ft_transfer_call '{ "receiver_id": "'$CONTRACT_ID'", "amount": "10000000000000000000000000", "msg": "" }' ``` #### View methods ```bash near view $CONTRACT_ID get_info near view $CONTRACT_ID ft_metadata near view $CONTRACT_ID ft_total_supply near view $CONTRACT_ID ft_balance_of '{"account_id": "'$OWNER_ID'"}' ``` #### Storage for the new account ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID storage_deposit '' --amount=0.00125 ``` #### Transfer 1 fNEAR from the owner ```bash near call $CONTRACT_ID --accountId=$OWNER_ID --depositYocto=1 ft_transfer '{ "receiver_id": "'$ACCOUNT_ID'", "amount": "1000000000000000000000000" }' ``` #### Check balance ```bash near view $CONTRACT_ID ft_balance_of '{"account_id": "'$OWNER_ID'"}' near view $CONTRACT_ID ft_balance_of '{"account_id": "'$ACCOUNT_ID'"}' ``` #### Attempt to transfer back (should fail, because not whitelisted) ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --depositYocto=1 ft_transfer '{ "receiver_id": "'$OWNER_ID'", "amount": "1000000000000000000000000" }' ``` Expected error: ``` 'Not whitelisted for transfers' ``` #### Attempt to unwrap (should fail, still locked) ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --depositYocto=1 --gas=100000000000000 unwrap '' ``` Expected error: ``` 'The token is still locked' ``` #### Whitelist transfers for the account ```bash near call $CONTRACT_ID --accountId=$OWNER_ID --depositYocto=1 add_transfer_whitelist '{ "account_id": "'$ACCOUNT_ID'" }' ``` #### Transfer of 0.1 by the account to the owner ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --depositYocto=1 ft_transfer '{ "receiver_id": "'$OWNER_ID'", "amount": "100000000000000000000000" }' ``` #### Unlock the unwrapping by the owner ```bash near call $CONTRACT_ID --accountId=$OWNER_ID --depositYocto=1 unlock '' ``` #### Attempt to unwrap the token (should fail, no wNEAR storage) ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --depositYocto=1 --gas=100000000000000 unwrap '' ``` Expected error: ``` 'The account is not registered' ``` #### Verify balances didn't change ```bash near view $CONTRACT_ID ft_balance_of '{"account_id": "'$OWNER_ID'"}' near view $CONTRACT_ID ft_balance_of '{"account_id": "'$ACCOUNT_ID'"}' ``` #### Storage deposit for wNEAR ```bash near call wrap.testnet --accountId=$ACCOUNT_ID storage_deposit '' --amount=0.00125 ``` #### Unwrap the token ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --depositYocto=1 --gas=100000000000000 unwrap '' ``` #### Verify balances of the account for fNEAR and wNEAR ```bash near view $CONTRACT_ID ft_balance_of '{"account_id": "'$ACCOUNT_ID'"}' near view wrap.testnet ft_balance_of '{"account_id": "'$ACCOUNT_ID'"}' ``` # Getting Started with Create React App This project was bootstrapped with [Create React App](https://github.com/facebook/create-react-app). ## Available Scripts In the project directory, you can run: ### `yarn start` Runs the app in the development mode.\ Open [http://localhost:3000](http://localhost:3000) to view it in the browser. The page will reload if you make edits.\ You will also see any lint errors in the console. ### `yarn test` Launches the test runner in the interactive watch mode.\ See the section about [running tests](https://facebook.github.io/create-react-app/docs/running-tests) for more information. ### `yarn build` Builds the app for production to the `build` folder.\ It correctly bundles React in production mode and optimizes the build for the best performance. The build is minified and the filenames include the hashes.\ Your app is ready to be deployed! See the section about [deployment](https://facebook.github.io/create-react-app/docs/deployment) for more information. ### `yarn eject` **Note: this is a one-way operation. Once you `eject`, you can’t go back!** If you aren’t satisfied with the build tool and configuration choices, you can `eject` at any time. This command will remove the single build dependency from your project. Instead, it will copy all the configuration files and the transitive dependencies (webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except `eject` will still work, but they will point to the copied scripts so you can tweak them. At this point you’re on your own. You don’t have to ever use `eject`. The curated feature set is suitable for small and middle deployments, and you shouldn’t feel obligated to use this feature. However we understand that this tool wouldn’t be useful if you couldn’t customize it when you are ready for it. ## Learn More You can learn more in the [Create React App documentation](https://facebook.github.io/create-react-app/docs/getting-started). To learn React, check out the [React documentation](https://reactjs.org/). # Burrowland contact ## How it works ### Interest model The contract uses a compounding interest model similar to Aave. Each asset defines interest rate configuration with the following values: * `target_utilization` - the ideal percent at for the asset utilization, e.g. 80% borrowed comparing to the total supplied. * `target_utilization_r` - the constant to use as a base for computing compounding APR at the target utilization. * `max_utilization_r` - the constant to use as a base for computing compounding APR at the 100% utilization. * `reserve_ratio` - the percentage of the acquired interest reserved for the platform. Based on these values we define 3 points of utilization: `0%`, target utilization and `100%`. For each of these points we have the `r` constant: `1.0`, `target_utilization_r` and `max_utilization_r` respectively. To compute the APR, we can use the following formula: `1 + APR = r ** MS_PER_YEAR`, where MS_PER_YEAR is the number of milliseconds in a year equal to `31536000000`. Based on the current supplied, reserved and borrowed balances, the current utilization is defined using the following formula: `utilization = (supplied + reserved) / borrowed` To compute current APR, we need to find the current `r` constant based on the linear interpolation between utilization points: * if `utilization <= target_utilization`, `r = target_utilization_r * (utilization / target_utilization)` * if `utilization > target_utilization`, `r = target_utilization_r + (max_utilization_r - target_utilization_r) * (utilization - target_utilization) / (1 - target_utilization)` To calculate the amount of interest acquired for the duration of `t` milliseconds, we can use the following formula: `interest = (r ** t) * borrowed` The interest are distributed to `reserved` and `supplied`, based on `reserve_ratio`, so the new values are: ``` reserved_interest = interest * reserve_ratio new_reserved = reserved + reserved_interest new_supplied = supplied + (interest - reserved_interest) new_borrowed = borrowed + interest ``` ### Health factor The health factor is computed per account instead of per asset. Each account may supply multiple collateral assets and may borrow multiple assets. Each asset has a configuration value `volatility_ratio` which indicates the expected price stability factor. The higher the ratio, the higher expectation of the stability of the price of the corresponding asset. To compute the current health factor for the account, we need to know the current prices of all collateral and borrowed assets. Firstly, we compute the adjusted for volatility sums of all collateral assets and borrowed assets. ``` adjusted_collateral_sum = sum(collateral_i * price_i * volatility_ratio_i) adjusted_borrowed_sum = sum(borrowed_i * price_i / volatility_ratio_i) ``` Now we can compute the health factor: `health_factor = adjusted_collateral_sum / adjusted_borrowed_sum` If the health factor is higher than 100%, it means the account is in a good state and can't be liquidated. If the health factor is less than 100%, it means the account can be partially liquidated and can't borrow more without repaying some amount of the existing assets or providing more collateral assets. ### Liquidations Contract liquidations are designed to make liquidators compete for the profit that they make during liquidations to minimize the loss taken by the unhealthy accounts. Instead of the fixed profit that is used in the legacy products, this contract introduces a variable discount with variable liquidation size. Liquidations rules: 1. the initial health factor of the liquidated accounts has to be below 100% 2. the discounted sum of the taken collateral should be less than the sum of repaid assets 3. the final health factor of the liquidated accounts has to stay below 100% A liquidation action consists of the following: - `account_id` - the account ID that is being liquidated - `in_assets` - the assets and corresponding amounts to repay form borrowed assets - `out_assets` - the assets and corresponding amounts to take from collateral assets The discount is computed based on the initial health factor of the liquidated account: `discount = (1 - health_factor) / 2` Now we can compute the taken discounted collateral sum and the repaid borrowed sum: ``` taken_sum = sum(out_asset_i * price_i) discounted_collateral_sum = taken_sum * (1 - discount) repaid_sum = sum(in_asset_i * price_i) ``` Once we action is completed, we can compute the final values and verify the liquidation rules: 1. `health_factor < 100%` 2. `discounted_collateral_sum <= repaid_sum` 3. `new_health_factor < 100%` The first rule only allows to liquidate accounts in the unhealthy state. The second rule prevents from taking more collateral than the repaid sum (after discount). The third rule prevents the liquidator from repaying too much of the borrowed assets, only enough to bring closer to the 100%. #### Liquidation example Account `alice.near` supplied to collateral `1000 wNEAR` and borrowed `4000 nDAI`. Let's say: - the price of `wNEAR` is `10` - the price of the `nDAI` is `1` - the `volatility_ratio` of `wNEAR` is `0.5` - the `volatility_ratio` of `nDAI` is `1` The health factor of `alice.near` is the following: ``` adjusted_collateral_sum = sum(1000 * 10 * 0.5) = 5000 adjusted_borrowed_sum = sum(4000 * 1 / 1) = 4000 health_factor = 5000 / 4000 = 125% ``` Let's say the price of `wNEAR` drops to `8` ``` adjusted_collateral_sum = sum(1000 * 8 * 0.5) = 4000 adjusted_borrowed_sum = sum(4000 * 1 / 1) = 4000 health_factor = 4000 / 4000 = 100% ``` The health factor is 100%, so the account still can't be liquidated. Let's say the price of `wNEAR` drops to `7` ``` adjusted_collateral_sum = sum(1000 * 7 * 0.5) = 3500 adjusted_borrowed_sum = sum(4000 * 1 / 1) = 4000 health_factor = 3500 / 4000 = 0.875 = 87.5% ``` The health factor is below 100%, so the account can be liquidated. The discount is the following: ``` discount = (1 - 0.875) / 2 = 0.0625 = 6.25% ``` It means anyone can repay some `nDAI` and take some `wNEAR` from `alice.near` with `6.25%` discount. Account `bob.near` decides to liquidate `alice.near` `bob.near` wants to repay `1000 nDAI`, we can compute the maximum sum of the collateral to take: ``` repaid_sum = sum(1000 * 1) = 1000 max_taken_sum = repaid_sum / (1 - discount) = 1000 / (1 - 0.0625) = 1066.666 ``` And based on the `wNEAR` price, we can compute the maximum amount: ``` max_wnear_amount = max_taken_sum / wnear_price = 1066.666 / 7 = 152.38 ``` But to avoid risk, `bob.near` takes `152` `wNEAR` - a bit less to avoid price fluctuation for the duration of the transaction. Let's compute the liquidation action: ``` taken_sum = sum(out_asset_i * price_i) = sum(152 * 7) = 1064 discounted_collateral_sum = taken_sum * (1 - discount) = 1064 * (1 - 0.0625) = 997.5 repaid_sum = sum(in_asset_i * price_i) = sum(1000 * 1) = 1000 new_adjusted_collateral_sum = sum((1000 - 152) * 7 * 0.5) = 2968 new_adjusted_borrowed_sum = sum((4000 - 1000) * 1 / 1) = 3000 new_health_factor = 2968 / 3000 = 0.9893 = 98.93% ``` Now checking the liquidation rules: ``` 1. 87.5% < 100% 2. 997.5 <= 1000 3. 98.93% < 100% ``` All rules satisfied, so the liquidation was successful. Now, let's compute the profit of `bob.near` (or the loss for `alice.near`) for this liquidation: ``` profit = taken_sum - repaid_sum = 1064 - 1000 = 64 ``` Notes: - If someone during the time when the price of `wNEAR` was falling from `8` to `7` liquidated `alice.near` they would have made less profit, by liquidating a smaller amount with a smaller collateral discount. - To fully realize the profit, `bob.near` has to take another action on some exchange and swap received `152` `wNEAR` for `nDAI`, which may involve extra fees and transactional risks. That's why liquidators may wait for higher discount. ## Development ### Build (optional) Requires Rust and wasm32 target. ```bash ./build.sh ``` ### Deploy on the testnet Requires NEAR CLI to be installed. ```bash ./scripts/dev_deploy.sh ``` This will provide a list of exports at the end. Execute them to get the CLI ready for further transactions. Example exports: ```bash export NEAR_ENV=testnet export OWNER_ID=dev-1634411537975-18277461139961 export ORACLE_ID=dev-1634411553736-97024242878560 export CONTRACT_ID=dev-1634411561699-94876475207945 export BOOSTER_TOKEN_ID=ref.fakes.testnet export WETH_TOKEN_ID=weth.fakes.testnet export DAI_TOKEN_ID=dai.fakes.testnet export USDT_TOKEN_ID=usdt.fakes.testnet export WNEAR_TOKEN_ID=wrap.testnet export ONE_YOCTO=0.000000000000000000000001 export GAS=200000000000000 ``` ### Create a test account Requires exports from running `dev_deploy`. ```bash ./scripts/create_account.sh ``` This will create a new test account with fake assets. Execute the export at the end to get the account ID. Example export: ```bash export ACCOUNT_ID=dev-1634680029152-10252684568108 ``` ## Actions ### Register account by paying for storage This has to be done one per account. ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=0.1 storage_deposit '{}' ``` ### Supply some token Let's supply `5` USDT. USDT has `6` decimals, so amount should be `5000000`. For a simple deposit, the `msg` can be empty string. ```bash near call $USDT_TOKEN_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=$ONE_YOCTO ft_transfer_call '{ "receiver_id": "'$CONTRACT_ID'", "amount": "5000000", "msg": "" }' ``` ### View account information ```bash near view $CONTRACT_ID get_account '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: ```javascript { account_id: 'dev-1634682124572-99167526870966', supplied: [ { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], collateral: [], borrowed: [], farms: [] } ``` Note: Since USDT asset has extra `12` decimals, it brings the 5 USDT in the balance to `5000000000000000000` ### View a given asset ```bash near view $CONTRACT_ID get_asset '{"token_id": "'$USDT_TOKEN_ID'"}' ``` Example result: ```javascript { supplied: { shares: '5000000000000000000', balance: '5000000000000000000' }, borrowed: { shares: '0', balance: '0' }, reserved: '2000000000000000000000', last_update_timestamp: '1634682347763275349', config: { reserve_ratio: 2500, target_utilization: 8000, target_utilization_rate: '1000000000002440418605283556', max_utilization_rate: '1000000000039724853136740579', volatility_ratio: 9500, extra_decimals: 12, can_deposit: true, can_withdraw: true, can_use_as_collateral: true, can_borrow: true } } ``` Note: You can also see `2000000000000000000000` reserved. That's `2000` USDT from the owner. ### Provide token as a collateral Let's add all USDT to a collateral. If the `amount` for a given action is not specified, then all available amount will be used. Increasing the collateral doesn't require prices from the oracle, because it can't decrease the existing collateral. ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=$ONE_YOCTO execute '{ "actions": [ { "IncreaseCollateral": { "token_id": "'$USDT_TOKEN_ID'" } } ] }' ``` Let's view the account info again: ```bash near view $CONTRACT_ID get_account '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: ```javascript { account_id: 'dev-1634682124572-99167526870966', supplied: [], collateral: [ { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], borrowed: [], farms: [] } ``` Note, you can see the USDT asset was moved from `supplied` to `collateral` ### Borrow a token Let's borrow `1` DAI. DAI has `18` decimals, so the amount should be `1000000000000000000`. Since borrow action puts account into the debt, we have to call this action through the oracle. The oracle should provide prices for all assets in the collateral as well as all existing borrowed assets and the new borrowed asset. The `msg` passed to the oracle should be string. Since it's part of the JSON, it has to be double-encoded and can't have newlines. FYI: The message that we pass to the contract from the oracle is the following: ```json { "Execute": { "actions": [ { "Borrow": { "token_id": "dai.fakes.testnet", "amount": "1000000000000000000" } } ] } } ``` ```bash near call $ORACLE_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=$ONE_YOCTO oracle_call '{ "receiver_id": "'$CONTRACT_ID'", "asset_ids": [ "'$USDT_TOKEN_ID'", "'$DAI_TOKEN_ID'" ], "msg": "{\"Execute\": {\"actions\": [{\"Borrow\": {\"token_id\": \"'$DAI_TOKEN_ID'\", \"amount\": \"1000000000000000000\"}}]}}" }' ``` You should see a log message like: `Account dev-1634682124572-99167526870966 borrows 1000000000000000000 of dai.fakes.testnet` Let's view the account info again: ```bash near view $CONTRACT_ID get_account '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: ```javascript { account_id: 'dev-1634682124572-99167526870966', supplied: [ { token_id: 'dai.fakes.testnet', balance: '1000000000048216105', shares: '1000000000000000000' } ], collateral: [ { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], borrowed: [ { token_id: 'dai.fakes.testnet', balance: '1000000000064288139', shares: '1000000000000000000' } ], farms: [] } ``` Note, without extra action the borrowed assets are not withdrawn to the wallet, but instead supplied to earn interest. From there they can be withdrawn. You can also notice that the borrowed balance is larger than the supplied balance, that's because the some of the interest are going to the reserve. If we view the account info again, then the balances should increase: Example result: ```javascript { account_id: 'dev-1634682124572-99167526870966', supplied: [ { token_id: 'dai.fakes.testnet', balance: '1000000000221528817', shares: '1000000000000000000' } ], collateral: [ { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], borrowed: [ { token_id: 'dai.fakes.testnet', balance: '1000000000295371755', shares: '1000000000000000000' } ], farms: [] } ``` Let's view the DAI asset info: ```bash near view $CONTRACT_ID get_asset '{"token_id": "'$DAI_TOKEN_ID'"}' ``` Example result: ```javascript { supplied: { shares: '1000000000000000000', balance: '1000000000399150907' }, borrowed: { shares: '1000000000000000000', balance: '1000000000532201209' }, reserved: '2000000000000133050302', last_update_timestamp: '1634683708614246127', config: { reserve_ratio: 2500, target_utilization: 8000, target_utilization_rate: '1000000000002440418605283556', max_utilization_rate: '1000000000039724853136740579', volatility_ratio: 9500, extra_decimals: 0, can_deposit: true, can_withdraw: true, can_use_as_collateral: true, can_borrow: true } } ``` ### Withdrawing the asset Let's withdraw all DAI including interest. Withdrawing doesn't need oracle prices, because it can only be taken from the supplied and not from the collateral. ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=$ONE_YOCTO execute '{ "actions": [ { "Withdraw": { "token_id": "'$DAI_TOKEN_ID'" } } ] }' ``` You should see the log, e.g. `Account dev-1634682124572-99167526870966 withdraws 1000000001658903820 of dai.fakes.testnet` Now let's check the DAI balance (in the wallet) of the account: ```bash near view $DAI_TOKEN_ID ft_balance_of '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: `10001000000001658903820`, which corresponds roughly to `10001` DAI, plus some extra earned interests. Withdrawal from the contract was possible, because the owner has supplied DAI into the reserve. Let's view the account info again: ```bash near view $CONTRACT_ID get_account '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: ```javascript { account_id: 'dev-1634682124572-99167526870966', supplied: [], collateral: [ { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], borrowed: [ { token_id: 'dai.fakes.testnet', balance: '1000000002496596924', shares: '1000000000000000000' } ], farms: [] } ``` Notice, there is no supplied DAI anymore. Let's view the DAI asset info: ```bash near view $CONTRACT_ID get_asset '{"token_id": "'$DAI_TOKEN_ID'"}' ``` Example result: ```javascript { supplied: { shares: '0', balance: '0' }, borrowed: { shares: '1000000000000000000', balance: '1000000002551410252' }, reserved: '2000000000000892506432', last_update_timestamp: '1634685033009246127', config: { reserve_ratio: 2500, target_utilization: 8000, target_utilization_rate: '1000000000002440418605283556', max_utilization_rate: '1000000000039724853136740579', volatility_ratio: 9500, extra_decimals: 0, can_deposit: true, can_withdraw: true, can_use_as_collateral: true, can_borrow: true } } ``` ### Deposit asset and repay it in one call. Note, multiple actions can be combined into a single atomic update. Either all of them complete or all of them are reverted. The invariants are only checked at the end, so this may be used to replace one collateral with another without repaying debts (but this requires oracle pricing). Let's deposit `5` DAI and use it to repay borrowed DAI. DAI has 18 decimal, so the amount is `5000000000000000000` For this we need to pass a custom `msg` to `ft_transfer_call`. The message has to be double-encoded into a string. FYI: Non-encoded message in JSON: ```json { "Execute": { "actions": [ { "Repay": { "token_id": "dai.fakes.testnet" } } ] } } ``` ```bash near call $DAI_TOKEN_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=$ONE_YOCTO ft_transfer_call '{ "receiver_id": "'$CONTRACT_ID'", "amount": "5000000000000000000", "msg": "{\"Execute\": {\"actions\": [{\"Repay\": {\"token_id\": \"'$DAI_TOKEN_ID'\"}}]}}" }' ``` You should see similar log messages: ``` Account dev-1634686749015-49146327775274 deposits 5000000000000000000 of dai.fakes.testnet Account dev-1634686749015-49146327775274 repays 1000000001735752696 of dai.fakes.testnet ``` Let's view the account info again: ```bash near view $CONTRACT_ID get_account '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: ```javascript { account_id: 'dev-1634686749015-49146327775274', supplied: [ { token_id: 'dai.fakes.testnet', balance: '3999999998264247304', shares: '3999999998264247304' } ], collateral: [ { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], borrowed: [], farms: [] } ``` Notice, there is no borrowed DAI anymore. Let's view the DAI asset info: ```bash near view $CONTRACT_ID get_asset '{"token_id": "'$DAI_TOKEN_ID'"}' ``` Example result: ```javascript { supplied: { shares: '3999999998264247304', balance: '3999999998264247304' }, borrowed: { shares: '0', balance: '0' }, reserved: '2000000000001727179674', last_update_timestamp: '1634688121573861187', config: { reserve_ratio: 2500, target_utilization: 8000, target_utilization_rate: '1000000000002440418605283556', max_utilization_rate: '1000000000039724853136740579', volatility_ratio: 9500, extra_decimals: 0, can_deposit: true, can_withdraw: true, can_use_as_collateral: true, can_borrow: true } } ``` And no borrowed balance or shares after repaying. ### Decreasing collateral Since there is no borrowed assets, we can take the collateral without providing prices. Let's get all USDT collateral back. ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=$ONE_YOCTO execute '{ "actions": [ { "DecreaseCollateral": { "token_id": "'$USDT_TOKEN_ID'" } } ] }' ``` Let's view the account info again: ```bash near view $CONTRACT_ID get_account '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: ```javascript { account_id: 'dev-1634686749015-49146327775274', supplied: [ { token_id: 'dai.fakes.testnet', balance: '3999999998264247304', shares: '3999999998264247304' }, { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], collateral: [], borrowed: [], farms: [] } ``` # Burrowland contact ## How it works ### Interest model The contract uses a compounding interest model similar to Aave. Each asset defines interest rate configuration with the following values: * `target_utilization` - the ideal percent at for the asset utilization, e.g. 80% borrowed comparing to the total supplied. * `target_utilization_r` - the constant to use as a base for computing compounding APR at the target utilization. * `max_utilization_r` - the constant to use as a base for computing compounding APR at the 100% utilization. * `reserve_ratio` - the percentage of the acquired interest reserved for the platform. Based on these values we define 3 points of utilization: `0%`, target utilization and `100%`. For each of these points we have the `r` constant: `1.0`, `target_utilization_r` and `max_utilization_r` respectively. To compute the APR, we can use the following formula: `1 + APR = r ** MS_PER_YEAR`, where MS_PER_YEAR is the number of milliseconds in a year equal to `31536000000`. Based on the current supplied, reserved and borrowed balances, the current utilization is defined using the following formula: `utilization = (supplied + reserved) / borrowed` To compute current APR, we need to find the current `r` constant based on the linear interpolation between utilization points: * if `utilization <= target_utilization`, `r = target_utilization_r * (utilization / target_utilization)` * if `utilization > target_utilization`, `r = target_utilization_r + (max_utilization_r - target_utilization_r) * (utilization - target_utilization) / (1 - target_utilization)` To calculate the amount of interest acquired for the duration of `t` milliseconds, we can use the following formula: `interest = (r ** t) * borrowed` The interest are distributed to `reserved` and `supplied`, based on `reserve_ratio`, so the new values are: ``` reserved_interest = interest * reserve_ratio new_reserved = reserved + reserved_interest new_supplied = supplied + (interest - reserved_interest) new_borrowed = borrowed + interest ``` ### Health factor The health factor is computed per account instead of per asset. Each account may supply multiple collateral assets and may borrow multiple assets. Each asset has a configuration value `volatility_ratio` which indicates the expected price stability factor. The higher the ratio, the higher expectation of the stability of the price of the corresponding asset. To compute the current health factor for the account, we need to know the current prices of all collateral and borrowed assets. Firstly, we compute the adjusted for volatility sums of all collateral assets and borrowed assets. ``` adjusted_collateral_sum = sum(collateral_i * price_i * volatility_ratio_i) adjusted_borrowed_sum = sum(borrowed_i * price_i / volatility_ratio_i) ``` Now we can compute the health factor: `health_factor = adjusted_collateral_sum / adjusted_borrowed_sum` If the health factor is higher than 100%, it means the account is in a good state and can't be liquidated. If the health factor is less than 100%, it means the account can be partially liquidated and can't borrow more without repaying some amount of the existing assets or providing more collateral assets. ### Liquidations Contract liquidations are designed to make liquidators compete for the profit that they make during liquidations to minimize the loss taken by the unhealthy accounts. Instead of the fixed profit that is used in the legacy products, this contract introduces a variable discount with variable liquidation size. Liquidations rules: 1. the initial health factor of the liquidated accounts has to be below 100% 2. the discounted sum of the taken collateral should be less than the sum of repaid assets 3. the final health factor of the liquidated accounts has to stay below 100% A liquidation action consists of the following: - `account_id` - the account ID that is being liquidated - `in_assets` - the assets and corresponding amounts to repay form borrowed assets - `out_assets` - the assets and corresponding amounts to take from collateral assets The discount is computed based on the initial health factor of the liquidated account: `discount = (1 - health_factor) / 2` Now we can compute the taken discounted collateral sum and the repaid borrowed sum: ``` taken_sum = sum(out_asset_i * price_i) discounted_collateral_sum = taken_sum * (1 - discount) repaid_sum = sum(in_asset_i * price_i) ``` Once we action is completed, we can compute the final values and verify the liquidation rules: 1. `health_factor < 100%` 2. `discounted_collateral_sum <= repaid_sum` 3. `new_health_factor < 100%` The first rule only allows to liquidate accounts in the unhealthy state. The second rule prevents from taking more collateral than the repaid sum (after discount). The third rule prevents the liquidator from repaying too much of the borrowed assets, only enough to bring closer to the 100%. #### Liquidation example Account `alice.near` supplied to collateral `1000 wNEAR` and borrowed `4000 nDAI`. Let's say: - the price of `wNEAR` is `10` - the price of the `nDAI` is `1` - the `volatility_ratio` of `wNEAR` is `0.5` - the `volatility_ratio` of `nDAI` is `1` The health factor of `alice.near` is the following: ``` adjusted_collateral_sum = sum(1000 * 10 * 0.5) = 5000 adjusted_borrowed_sum = sum(4000 * 1 / 1) = 4000 health_factor = 5000 / 4000 = 125% ``` Let's say the price of `wNEAR` drops to `8` ``` adjusted_collateral_sum = sum(1000 * 8 * 0.5) = 4000 adjusted_borrowed_sum = sum(4000 * 1 / 1) = 4000 health_factor = 4000 / 4000 = 100% ``` The health factor is 100%, so the account still can't be liquidated. Let's say the price of `wNEAR` drops to `7` ``` adjusted_collateral_sum = sum(1000 * 7 * 0.5) = 3500 adjusted_borrowed_sum = sum(4000 * 1 / 1) = 4000 health_factor = 3500 / 4000 = 0.875 = 87.5% ``` The health factor is below 100%, so the account can be liquidated. The discount is the following: ``` discount = (1 - 0.875) / 2 = 0.0625 = 6.25% ``` It means anyone can repay some `nDAI` and take some `wNEAR` from `alice.near` with `6.25%` discount. Account `bob.near` decides to liquidate `alice.near` `bob.near` wants to repay `1000 nDAI`, we can compute the maximum sum of the collateral to take: ``` repaid_sum = sum(1000 * 1) = 1000 max_taken_sum = repaid_sum / (1 - discount) = 1000 / (1 - 0.0625) = 1066.666 ``` And based on the `wNEAR` price, we can compute the maximum amount: ``` max_wnear_amount = max_taken_sum / wnear_price = 1066.666 / 7 = 152.38 ``` But to avoid risk, `bob.near` takes `152` `wNEAR` - a bit less to avoid price fluctuation for the duration of the transaction. Let's compute the liquidation action: ``` taken_sum = sum(out_asset_i * price_i) = sum(152 * 7) = 1064 discounted_collateral_sum = taken_sum * (1 - discount) = 1064 * (1 - 0.0625) = 997.5 repaid_sum = sum(in_asset_i * price_i) = sum(1000 * 1) = 1000 new_adjusted_collateral_sum = sum((1000 - 152) * 7 * 0.5) = 2968 new_adjusted_borrowed_sum = sum((4000 - 1000) * 1 / 1) = 3000 new_health_factor = 2968 / 3000 = 0.9893 = 98.93% ``` Now checking the liquidation rules: ``` 1. 87.5% < 100% 2. 997.5 <= 1000 3. 98.93% < 100% ``` All rules satisfied, so the liquidation was successful. Now, let's compute the profit of `bob.near` (or the loss for `alice.near`) for this liquidation: ``` profit = taken_sum - repaid_sum = 1064 - 1000 = 64 ``` Notes: - If someone during the time when the price of `wNEAR` was falling from `8` to `7` liquidated `alice.near` they would have made less profit, by liquidating a smaller amount with a smaller collateral discount. - To fully realize the profit, `bob.near` has to take another action on some exchange and swap received `152` `wNEAR` for `nDAI`, which may involve extra fees and transactional risks. That's why liquidators may wait for higher discount. ## Development ### Build (optional) Requires Rust and wasm32 target. ```bash ./build.sh ``` ### Deploy on the testnet Requires NEAR CLI to be installed. ```bash ./scripts/dev_deploy.sh ``` This will provide a list of exports at the end. Execute them to get the CLI ready for further transactions. Example exports: ```bash export NEAR_ENV=testnet export OWNER_ID=dev-1634411537975-18277461139961 export ORACLE_ID=dev-1634411553736-97024242878560 export CONTRACT_ID=dev-1634411561699-94876475207945 export BOOSTER_TOKEN_ID=ref.fakes.testnet export WETH_TOKEN_ID=weth.fakes.testnet export DAI_TOKEN_ID=dai.fakes.testnet export USDT_TOKEN_ID=usdt.fakes.testnet export WNEAR_TOKEN_ID=wrap.testnet export ONE_YOCTO=0.000000000000000000000001 export GAS=200000000000000 ``` ### Create a test account Requires exports from running `dev_deploy`. ```bash ./scripts/create_account.sh ``` This will create a new test account with fake assets. Execute the export at the end to get the account ID. Example export: ```bash export ACCOUNT_ID=dev-1634680029152-10252684568108 ``` ## Actions ### Register account by paying for storage This has to be done one per account. ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=0.1 storage_deposit '{}' ``` ### Supply some token Let's supply `5` USDT. USDT has `6` decimals, so amount should be `5000000`. For a simple deposit, the `msg` can be empty string. ```bash near call $USDT_TOKEN_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=$ONE_YOCTO ft_transfer_call '{ "receiver_id": "'$CONTRACT_ID'", "amount": "5000000", "msg": "" }' ``` ### View account information ```bash near view $CONTRACT_ID get_account '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: ```javascript { account_id: 'dev-1634682124572-99167526870966', supplied: [ { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], collateral: [], borrowed: [], farms: [] } ``` Note: Since USDT asset has extra `12` decimals, it brings the 5 USDT in the balance to `5000000000000000000` ### View a given asset ```bash near view $CONTRACT_ID get_asset '{"token_id": "'$USDT_TOKEN_ID'"}' ``` Example result: ```javascript { supplied: { shares: '5000000000000000000', balance: '5000000000000000000' }, borrowed: { shares: '0', balance: '0' }, reserved: '2000000000000000000000', last_update_timestamp: '1634682347763275349', config: { reserve_ratio: 2500, target_utilization: 8000, target_utilization_rate: '1000000000002440418605283556', max_utilization_rate: '1000000000039724853136740579', volatility_ratio: 9500, extra_decimals: 12, can_deposit: true, can_withdraw: true, can_use_as_collateral: true, can_borrow: true } } ``` Note: You can also see `2000000000000000000000` reserved. That's `2000` USDT from the owner. ### Provide token as a collateral Let's add all USDT to a collateral. If the `amount` for a given action is not specified, then all available amount will be used. Increasing the collateral doesn't require prices from the oracle, because it can't decrease the existing collateral. ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=$ONE_YOCTO execute '{ "actions": [ { "IncreaseCollateral": { "token_id": "'$USDT_TOKEN_ID'" } } ] }' ``` Let's view the account info again: ```bash near view $CONTRACT_ID get_account '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: ```javascript { account_id: 'dev-1634682124572-99167526870966', supplied: [], collateral: [ { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], borrowed: [], farms: [] } ``` Note, you can see the USDT asset was moved from `supplied` to `collateral` ### Borrow a token Let's borrow `1` DAI. DAI has `18` decimals, so the amount should be `1000000000000000000`. Since borrow action puts account into the debt, we have to call this action through the oracle. The oracle should provide prices for all assets in the collateral as well as all existing borrowed assets and the new borrowed asset. The `msg` passed to the oracle should be string. Since it's part of the JSON, it has to be double-encoded and can't have newlines. FYI: The message that we pass to the contract from the oracle is the following: ```json { "Execute": { "actions": [ { "Borrow": { "token_id": "dai.fakes.testnet", "amount": "1000000000000000000" } } ] } } ``` ```bash near call $ORACLE_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=$ONE_YOCTO oracle_call '{ "receiver_id": "'$CONTRACT_ID'", "asset_ids": [ "'$USDT_TOKEN_ID'", "'$DAI_TOKEN_ID'" ], "msg": "{\"Execute\": {\"actions\": [{\"Borrow\": {\"token_id\": \"'$DAI_TOKEN_ID'\", \"amount\": \"1000000000000000000\"}}]}}" }' ``` You should see a log message like: `Account dev-1634682124572-99167526870966 borrows 1000000000000000000 of dai.fakes.testnet` Let's view the account info again: ```bash near view $CONTRACT_ID get_account '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: ```javascript { account_id: 'dev-1634682124572-99167526870966', supplied: [ { token_id: 'dai.fakes.testnet', balance: '1000000000048216105', shares: '1000000000000000000' } ], collateral: [ { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], borrowed: [ { token_id: 'dai.fakes.testnet', balance: '1000000000064288139', shares: '1000000000000000000' } ], farms: [] } ``` Note, without extra action the borrowed assets are not withdrawn to the wallet, but instead supplied to earn interest. From there they can be withdrawn. You can also notice that the borrowed balance is larger than the supplied balance, that's because the some of the interest are going to the reserve. If we view the account info again, then the balances should increase: Example result: ```javascript { account_id: 'dev-1634682124572-99167526870966', supplied: [ { token_id: 'dai.fakes.testnet', balance: '1000000000221528817', shares: '1000000000000000000' } ], collateral: [ { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], borrowed: [ { token_id: 'dai.fakes.testnet', balance: '1000000000295371755', shares: '1000000000000000000' } ], farms: [] } ``` Let's view the DAI asset info: ```bash near view $CONTRACT_ID get_asset '{"token_id": "'$DAI_TOKEN_ID'"}' ``` Example result: ```javascript { supplied: { shares: '1000000000000000000', balance: '1000000000399150907' }, borrowed: { shares: '1000000000000000000', balance: '1000000000532201209' }, reserved: '2000000000000133050302', last_update_timestamp: '1634683708614246127', config: { reserve_ratio: 2500, target_utilization: 8000, target_utilization_rate: '1000000000002440418605283556', max_utilization_rate: '1000000000039724853136740579', volatility_ratio: 9500, extra_decimals: 0, can_deposit: true, can_withdraw: true, can_use_as_collateral: true, can_borrow: true } } ``` ### Withdrawing the asset Let's withdraw all DAI including interest. Withdrawing doesn't need oracle prices, because it can only be taken from the supplied and not from the collateral. ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=$ONE_YOCTO execute '{ "actions": [ { "Withdraw": { "token_id": "'$DAI_TOKEN_ID'" } } ] }' ``` You should see the log, e.g. `Account dev-1634682124572-99167526870966 withdraws 1000000001658903820 of dai.fakes.testnet` Now let's check the DAI balance (in the wallet) of the account: ```bash near view $DAI_TOKEN_ID ft_balance_of '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: `10001000000001658903820`, which corresponds roughly to `10001` DAI, plus some extra earned interests. Withdrawal from the contract was possible, because the owner has supplied DAI into the reserve. Let's view the account info again: ```bash near view $CONTRACT_ID get_account '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: ```javascript { account_id: 'dev-1634682124572-99167526870966', supplied: [], collateral: [ { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], borrowed: [ { token_id: 'dai.fakes.testnet', balance: '1000000002496596924', shares: '1000000000000000000' } ], farms: [] } ``` Notice, there is no supplied DAI anymore. Let's view the DAI asset info: ```bash near view $CONTRACT_ID get_asset '{"token_id": "'$DAI_TOKEN_ID'"}' ``` Example result: ```javascript { supplied: { shares: '0', balance: '0' }, borrowed: { shares: '1000000000000000000', balance: '1000000002551410252' }, reserved: '2000000000000892506432', last_update_timestamp: '1634685033009246127', config: { reserve_ratio: 2500, target_utilization: 8000, target_utilization_rate: '1000000000002440418605283556', max_utilization_rate: '1000000000039724853136740579', volatility_ratio: 9500, extra_decimals: 0, can_deposit: true, can_withdraw: true, can_use_as_collateral: true, can_borrow: true } } ``` ### Deposit asset and repay it in one call. Note, multiple actions can be combined into a single atomic update. Either all of them complete or all of them are reverted. The invariants are only checked at the end, so this may be used to replace one collateral with another without repaying debts (but this requires oracle pricing). Let's deposit `5` DAI and use it to repay borrowed DAI. DAI has 18 decimal, so the amount is `5000000000000000000` For this we need to pass a custom `msg` to `ft_transfer_call`. The message has to be double-encoded into a string. FYI: Non-encoded message in JSON: ```json { "Execute": { "actions": [ { "Repay": { "token_id": "dai.fakes.testnet" } } ] } } ``` ```bash near call $DAI_TOKEN_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=$ONE_YOCTO ft_transfer_call '{ "receiver_id": "'$CONTRACT_ID'", "amount": "5000000000000000000", "msg": "{\"Execute\": {\"actions\": [{\"Repay\": {\"token_id\": \"'$DAI_TOKEN_ID'\"}}]}}" }' ``` You should see similar log messages: ``` Account dev-1634686749015-49146327775274 deposits 5000000000000000000 of dai.fakes.testnet Account dev-1634686749015-49146327775274 repays 1000000001735752696 of dai.fakes.testnet ``` Let's view the account info again: ```bash near view $CONTRACT_ID get_account '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: ```javascript { account_id: 'dev-1634686749015-49146327775274', supplied: [ { token_id: 'dai.fakes.testnet', balance: '3999999998264247304', shares: '3999999998264247304' } ], collateral: [ { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], borrowed: [], farms: [] } ``` Notice, there is no borrowed DAI anymore. Let's view the DAI asset info: ```bash near view $CONTRACT_ID get_asset '{"token_id": "'$DAI_TOKEN_ID'"}' ``` Example result: ```javascript { supplied: { shares: '3999999998264247304', balance: '3999999998264247304' }, borrowed: { shares: '0', balance: '0' }, reserved: '2000000000001727179674', last_update_timestamp: '1634688121573861187', config: { reserve_ratio: 2500, target_utilization: 8000, target_utilization_rate: '1000000000002440418605283556', max_utilization_rate: '1000000000039724853136740579', volatility_ratio: 9500, extra_decimals: 0, can_deposit: true, can_withdraw: true, can_use_as_collateral: true, can_borrow: true } } ``` And no borrowed balance or shares after repaying. ### Decreasing collateral Since there is no borrowed assets, we can take the collateral without providing prices. Let's get all USDT collateral back. ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=$ONE_YOCTO execute '{ "actions": [ { "DecreaseCollateral": { "token_id": "'$USDT_TOKEN_ID'" } } ] }' ``` Let's view the account info again: ```bash near view $CONTRACT_ID get_account '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: ```javascript { account_id: 'dev-1634686749015-49146327775274', supplied: [ { token_id: 'dai.fakes.testnet', balance: '3999999998264247304', shares: '3999999998264247304' }, { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], collateral: [], borrowed: [], farms: [] } ``` # NEARLend function getBorrowRate(uint cash, uint borrows, uint reserves); function getSupplyRate(uint cash, uint borrows, uint reserves, uint reserveFactorMantissa); function transferTokens(address spender, address src, address dst, uint tokens); function repayBorrowInternal(uint repayAmount); function doTransferIn(address from, uint amount); function doTransferOut(address payable to, uint amount); # Fungible Token Lockup contract ## Features - A reusable lockup contract for a select fungible token. - Lockup schedule can be set as a list of checkpoints with time and balance. - Supports multiple lockups per account ID. - Ability to create a lockup that can be terminated - A single lockup can be only terminated by a specific account ID. - Supports custom vesting schedule that should be ahead of the lockup schedule - The vesting schedule can be hidden behind a hash, so it only needs to be revealed in case of termnation. - Automatic rollbacks if a FT transfer fails. - Claiming all account's lockups in a single transaction. - Ability to add new lockups. - Whitelist for the accounts that can create new lockups. ## Example with wNEAR on testnet * `$CONTRACT_ID` - the account ID of the new token fNEAR * `wrap.testnet` - the token ID that is being wrapped/locked. wNEAR is used for the example. * `$ACCOUNT_ID` - the account ID of a test account. #### Init ```bash near call $CONTRACT_ID --accountId=$OWNER_ID new '{ "locked_token_account_id": "wrap.testnet", "meta": {"spec": "ft-1.0.0", "name": "Future NEAR", "symbol": "fNEAR", "decimals": 24}, }' ``` #### Wrap 20 NEAR into wNEAR (optional) ```bash near call wrap.testnet --accountId=$OWNER_ID storage_deposit '' --amount=0.00125 near call wrap.testnet --accountId=$OWNER_ID near_deposit --amount=20 ``` #### Storage deposit ```bash near call wrap.testnet --accountId=$OWNER_ID storage_deposit '{"account_id": "'$CONTRACT_ID'"}' --amount=0.00125 ``` #### Lock 10 wNEAR into fNEAR ```bash near call wrap.testnet --accountId=$OWNER_ID --depositYocto=1 --gas=100000000000000 ft_transfer_call '{ "receiver_id": "'$CONTRACT_ID'", "amount": "10000000000000000000000000", "msg": "" }' ``` #### View methods ```bash near view $CONTRACT_ID get_info near view $CONTRACT_ID ft_metadata near view $CONTRACT_ID ft_total_supply near view $CONTRACT_ID ft_balance_of '{"account_id": "'$OWNER_ID'"}' ``` #### Storage for the new account ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID storage_deposit '' --amount=0.00125 ``` #### Transfer 1 fNEAR from the owner ```bash near call $CONTRACT_ID --accountId=$OWNER_ID --depositYocto=1 ft_transfer '{ "receiver_id": "'$ACCOUNT_ID'", "amount": "1000000000000000000000000" }' ``` #### Check balance ```bash near view $CONTRACT_ID ft_balance_of '{"account_id": "'$OWNER_ID'"}' near view $CONTRACT_ID ft_balance_of '{"account_id": "'$ACCOUNT_ID'"}' ``` #### Transfer of 0.1 by the account to the owner ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --depositYocto=1 ft_transfer '{ "receiver_id": "'$OWNER_ID'", "amount": "100000000000000000000000" }' ``` #### Attempt to unwrap the token (should fail, no wNEAR storage) ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --depositYocto=1 --gas=100000000000000 unwrap '' ``` Expected error: ``` 'The account is not registered' ``` #### Verify balances didn't change ```bash near view $CONTRACT_ID ft_balance_of '{"account_id": "'$OWNER_ID'"}' near view $CONTRACT_ID ft_balance_of '{"account_id": "'$ACCOUNT_ID'"}' ``` #### Storage deposit for wNEAR ```bash near call wrap.testnet --accountId=$ACCOUNT_ID storage_deposit '' --amount=0.00125 ``` #### Unwrap the token ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --depositYocto=1 --gas=100000000000000 unwrap '' ``` #### Verify balances of the account for fNEAR and wNEAR ```bash near view $CONTRACT_ID ft_balance_of '{"account_id": "'$ACCOUNT_ID'"}' near view wrap.testnet ft_balance_of '{"account_id": "'$ACCOUNT_ID'"}' ``` # Nearlend contact ## Development ### Build (optional) Requires Rust and wasm32 target. ```bash ./build.sh ``` ### Deploy on the testnet Requires NEAR CLI to be installed. ```bash ./scripts/dev_deploy.sh ``` This will provide a list of exports at the end. Execute them to get the CLI ready for further transactions. Example exports: ```bash export NEAR_ENV=testnet export OWNER_ID=dev-1634411537975-18277461139961 export ORACLE_ID=dev-1634411553736-97024242878560 export CONTRACT_ID=dev-1634411561699-94876475207945 export BOOSTER_TOKEN_ID=ref.fakes.testnet export WETH_TOKEN_ID=weth.fakes.testnet export DAI_TOKEN_ID=dai.fakes.testnet export USDT_TOKEN_ID=usdt.fakes.testnet export WNEAR_TOKEN_ID=wrap.testnet export ONE_YOCTO=0.000000000000000000000001 export GAS=200000000000000 ``` ### Create a test account Requires exports from running `dev_deploy`. ```bash ./scripts/create_account.sh ``` This will create a new test account with fake assets. Execute the export at the end to get the account ID. Example export: ```bash export ACCOUNT_ID=dev-1634680029152-10252684568108 ``` ## Actions ### Register account by paying for storage This has to be done one per account. ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=0.1 storage_deposit '{}' ``` ### Supply some token Let's supply `5` USDT. USDT has `6` decimals, so amount should be `5000000`. For a simple deposit, the `msg` can be empty string. ```bash near call $USDT_TOKEN_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=$ONE_YOCTO ft_transfer_call '{ "receiver_id": "'$CONTRACT_ID'", "amount": "5000000", "msg": "" }' ``` ### View account information ```bash near view $CONTRACT_ID get_account '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: ```javascript { account_id: 'dev-1634682124572-99167526870966', supplied: [ { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], collateral: [], borrowed: [], farms: [] } ``` Note: Since USDT asset has extra `12` decimals, it brings the 5 USDT in the balance to `5000000000000000000` ### View a given asset ```bash near view $CONTRACT_ID get_asset '{"token_id": "'$USDT_TOKEN_ID'"}' ``` Example result: ```javascript { supplied: { shares: '5000000000000000000', balance: '5000000000000000000' }, borrowed: { shares: '0', balance: '0' }, reserved: '2000000000000000000000', last_update_timestamp: '1634682347763275349', config: { reserve_ratio: 2500, target_utilization: 8000, target_utilization_rate: '1000000000002440418605283556', max_utilization_rate: '1000000000039724853136740579', volatility_ratio: 9500, extra_decimals: 12, can_deposit: true, can_withdraw: true, can_use_as_collateral: true, can_borrow: true } } ``` Note: You can also see `2000000000000000000000` reserved. That's `2000` USDT from the owner. ### Provide token as a collateral Let's add all USDT to a collateral. If the `amount` for a given action is not specified, then all available amount will be used. Increasing the collateral doesn't require prices from the oracle, because it can't decrease the existing collateral. ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=$ONE_YOCTO execute '{ "actions": [ { "IncreaseCollateral": { "token_id": "'$USDT_TOKEN_ID'" } } ] }' ``` Let's view the account info again: ```bash near view $CONTRACT_ID get_account '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: ```javascript { account_id: 'dev-1634682124572-99167526870966', supplied: [], collateral: [ { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], borrowed: [], farms: [] } ``` Note, you can see the USDT asset was moved from `supplied` to `collateral` ### Borrow a token Let's borrow `1` DAI. DAI has `18` decimals, so the amount should be `1000000000000000000`. Since borrow action puts account into the debt, we have to call this action through the oracle. The oracle should provide prices for all assets in the collateral as well as all existing borrowed assets and the new borrowed asset. The `msg` passed to the oracle should be string. Since it's part of the JSON, it has to be double-encoded and can't have newlines. FYI: The message that we pass to the contract from the oracle is the following: ```json { "Execute": { "actions": [ { "Borrow": { "token_id": "dai.fakes.testnet", "amount": "1000000000000000000" } } ] } } ``` ```bash near call $ORACLE_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=$ONE_YOCTO oracle_call '{ "receiver_id": "'$CONTRACT_ID'", "asset_ids": [ "'$USDT_TOKEN_ID'", "'$DAI_TOKEN_ID'" ], "msg": "{\"Execute\": {\"actions\": [{\"Borrow\": {\"token_id\": \"'$DAI_TOKEN_ID'\", \"amount\": \"1000000000000000000\"}}]}}" }' ``` You should see a log message like: `Account dev-1634682124572-99167526870966 borrows 1000000000000000000 of dai.fakes.testnet` Let's view the account info again: ```bash near view $CONTRACT_ID get_account '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: ```javascript { account_id: 'dev-1634682124572-99167526870966', supplied: [ { token_id: 'dai.fakes.testnet', balance: '1000000000048216105', shares: '1000000000000000000' } ], collateral: [ { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], borrowed: [ { token_id: 'dai.fakes.testnet', balance: '1000000000064288139', shares: '1000000000000000000' } ], farms: [] } ``` Note, without extra action the borrowed assets are not withdrawn to the wallet, but instead supplied to earn interest. From there they can be withdrawn. You can also notice that the borrowed balance is larger than the supplied balance, that's because the some of the interest are going to the reserve. If we view the account info again, then the balances should increase: Example result: ```javascript { account_id: 'dev-1634682124572-99167526870966', supplied: [ { token_id: 'dai.fakes.testnet', balance: '1000000000221528817', shares: '1000000000000000000' } ], collateral: [ { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], borrowed: [ { token_id: 'dai.fakes.testnet', balance: '1000000000295371755', shares: '1000000000000000000' } ], farms: [] } ``` Let's view the DAI asset info: ```bash near view $CONTRACT_ID get_asset '{"token_id": "'$DAI_TOKEN_ID'"}' ``` Example result: ```javascript { supplied: { shares: '1000000000000000000', balance: '1000000000399150907' }, borrowed: { shares: '1000000000000000000', balance: '1000000000532201209' }, reserved: '2000000000000133050302', last_update_timestamp: '1634683708614246127', config: { reserve_ratio: 2500, target_utilization: 8000, target_utilization_rate: '1000000000002440418605283556', max_utilization_rate: '1000000000039724853136740579', volatility_ratio: 9500, extra_decimals: 0, can_deposit: true, can_withdraw: true, can_use_as_collateral: true, can_borrow: true } } ``` ### Withdrawing the asset Let's withdraw all DAI including interest. Withdrawing doesn't need oracle prices, because it can only be taken from the supplied and not from the collateral. ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=$ONE_YOCTO execute '{ "actions": [ { "Withdraw": { "token_id": "'$DAI_TOKEN_ID'" } } ] }' ``` You should see the log, e.g. `Account dev-1634682124572-99167526870966 withdraws 1000000001658903820 of dai.fakes.testnet` Now let's check the DAI balance (in the wallet) of the account: ```bash near view $DAI_TOKEN_ID ft_balance_of '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: `10001000000001658903820`, which corresponds roughly to `10001` DAI, plus some extra earned interests. Withdrawal from the contract was possible, because the owner has supplied DAI into the reserve. Let's view the account info again: ```bash near view $CONTRACT_ID get_account '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: ```javascript { account_id: 'dev-1634682124572-99167526870966', supplied: [], collateral: [ { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], borrowed: [ { token_id: 'dai.fakes.testnet', balance: '1000000002496596924', shares: '1000000000000000000' } ], farms: [] } ``` Notice, there is no supplied DAI anymore. Let's view the DAI asset info: ```bash near view $CONTRACT_ID get_asset '{"token_id": "'$DAI_TOKEN_ID'"}' ``` Example result: ```javascript { supplied: { shares: '0', balance: '0' }, borrowed: { shares: '1000000000000000000', balance: '1000000002551410252' }, reserved: '2000000000000892506432', last_update_timestamp: '1634685033009246127', config: { reserve_ratio: 2500, target_utilization: 8000, target_utilization_rate: '1000000000002440418605283556', max_utilization_rate: '1000000000039724853136740579', volatility_ratio: 9500, extra_decimals: 0, can_deposit: true, can_withdraw: true, can_use_as_collateral: true, can_borrow: true } } ``` ### Deposit asset and repay it in one call. Note, multiple actions can be combined into a single atomic update. Either all of them complete or all of them are reverted. The invariants are only checked at the end, so this may be used to replace one collateral with another without repaying debts (but this requires oracle pricing). Let's deposit `5` DAI and use it to repay borrowed DAI. DAI has 18 decimal, so the amount is `5000000000000000000` For this we need to pass a custom `msg` to `ft_transfer_call`. The message has to be double-encoded into a string. FYI: Non-encoded message in JSON: ```json { "Execute": { "actions": [ { "Repay": { "token_id": "dai.fakes.testnet" } } ] } } ``` ```bash near call $DAI_TOKEN_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=$ONE_YOCTO ft_transfer_call '{ "receiver_id": "'$CONTRACT_ID'", "amount": "5000000000000000000", "msg": "{\"Execute\": {\"actions\": [{\"Repay\": {\"token_id\": \"'$DAI_TOKEN_ID'\"}}]}}" }' ``` You should see similar log messages: ``` Account dev-1634686749015-49146327775274 deposits 5000000000000000000 of dai.fakes.testnet Account dev-1634686749015-49146327775274 repays 1000000001735752696 of dai.fakes.testnet ``` Let's view the account info again: ```bash near view $CONTRACT_ID get_account '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: ```javascript { account_id: 'dev-1634686749015-49146327775274', supplied: [ { token_id: 'dai.fakes.testnet', balance: '3999999998264247304', shares: '3999999998264247304' } ], collateral: [ { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], borrowed: [], farms: [] } ``` Notice, there is no borrowed DAI anymore. Let's view the DAI asset info: ```bash near view $CONTRACT_ID get_asset '{"token_id": "'$DAI_TOKEN_ID'"}' ``` Example result: ```javascript { supplied: { shares: '3999999998264247304', balance: '3999999998264247304' }, borrowed: { shares: '0', balance: '0' }, reserved: '2000000000001727179674', last_update_timestamp: '1634688121573861187', config: { reserve_ratio: 2500, target_utilization: 8000, target_utilization_rate: '1000000000002440418605283556', max_utilization_rate: '1000000000039724853136740579', volatility_ratio: 9500, extra_decimals: 0, can_deposit: true, can_withdraw: true, can_use_as_collateral: true, can_borrow: true } } ``` And no borrowed balance or shares after repaying. ### Decreasing collateral Since there is no borrowed assets, we can take the collateral without providing prices. Let's get all USDT collateral back. ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --gas=$GAS --amount=$ONE_YOCTO execute '{ "actions": [ { "DecreaseCollateral": { "token_id": "'$USDT_TOKEN_ID'" } } ] }' ``` Let's view the account info again: ```bash near view $CONTRACT_ID get_account '{"account_id": "'$ACCOUNT_ID'"}' ``` Example result: ```javascript { account_id: 'dev-1634686749015-49146327775274', supplied: [ { token_id: 'dai.fakes.testnet', balance: '3999999998264247304', shares: '3999999998264247304' }, { token_id: 'usdt.fakes.testnet', balance: '5000000000000000000', shares: '5000000000000000000' } ], collateral: [], borrowed: [], farms: [] } ``` ## Example with wNEAR on testnet * `$CONTRACT_ID` - the account ID of the new token fNEAR * `$OWNER_ID` - the account ID of the controller/owner. * `wrap.testnet` - the token ID that is being wrapped/locked. wNEAR is used for the example. * `$ACCOUNT_ID` - the account ID of a test account. #### Init ```bash near call $CONTRACT_ID --accountId=$OWNER_ID new '{ "locked_token_account_id": "wrap.testnet", "meta": {"spec": "ft-1.0.0", "name": "Future NEAR", "symbol": "fNEAR", "decimals": 24}, "owner_id": "'$OWNER_ID'" }' ``` #### Wrap 20 NEAR into wNEAR (optional) ```bash near call wrap.testnet --accountId=$OWNER_ID storage_deposit '' --amount=0.00125 near call wrap.testnet --accountId=$OWNER_ID near_deposit --amount=20 ``` #### Storage deposit ```bash near call wrap.testnet --accountId=$OWNER_ID storage_deposit '{"account_id": "'$CONTRACT_ID'"}' --amount=0.00125 ``` #### Lock 10 wNEAR into fNEAR ```bash near call wrap.testnet --accountId=$OWNER_ID --depositYocto=1 --gas=100000000000000 ft_transfer_call '{ "receiver_id": "'$CONTRACT_ID'", "amount": "10000000000000000000000000", "msg": "" }' ``` #### View methods ```bash near view $CONTRACT_ID get_info near view $CONTRACT_ID ft_metadata near view $CONTRACT_ID ft_total_supply near view $CONTRACT_ID ft_balance_of '{"account_id": "'$OWNER_ID'"}' ``` #### Storage for the new account ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID storage_deposit '' --amount=0.00125 ``` #### Transfer 1 fNEAR from the owner ```bash near call $CONTRACT_ID --accountId=$OWNER_ID --depositYocto=1 ft_transfer '{ "receiver_id": "'$ACCOUNT_ID'", "amount": "1000000000000000000000000" }' ``` #### Check balance ```bash near view $CONTRACT_ID ft_balance_of '{"account_id": "'$OWNER_ID'"}' near view $CONTRACT_ID ft_balance_of '{"account_id": "'$ACCOUNT_ID'"}' ``` #### Attempt to transfer back (should fail, because not whitelisted) ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --depositYocto=1 ft_transfer '{ "receiver_id": "'$OWNER_ID'", "amount": "1000000000000000000000000" }' ``` Expected error: ``` 'Not whitelisted for transfers' ``` #### Attempt to unwrap (should fail, still locked) ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --depositYocto=1 --gas=100000000000000 unwrap '' ``` Expected error: ``` 'The token is still locked' ``` #### Whitelist transfers for the account ```bash near call $CONTRACT_ID --accountId=$OWNER_ID --depositYocto=1 add_transfer_whitelist '{ "account_id": "'$ACCOUNT_ID'" }' ``` #### Transfer of 0.1 by the account to the owner ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --depositYocto=1 ft_transfer '{ "receiver_id": "'$OWNER_ID'", "amount": "100000000000000000000000" }' ``` #### Unlock the unwrapping by the owner ```bash near call $CONTRACT_ID --accountId=$OWNER_ID --depositYocto=1 unlock '' ``` #### Attempt to unwrap the token (should fail, no wNEAR storage) ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --depositYocto=1 --gas=100000000000000 unwrap '' ``` Expected error: ``` 'The account is not registered' ``` #### Verify balances didn't change ```bash near view $CONTRACT_ID ft_balance_of '{"account_id": "'$OWNER_ID'"}' near view $CONTRACT_ID ft_balance_of '{"account_id": "'$ACCOUNT_ID'"}' ``` #### Storage deposit for wNEAR ```bash near call wrap.testnet --accountId=$ACCOUNT_ID storage_deposit '' --amount=0.00125 ``` #### Unwrap the token ```bash near call $CONTRACT_ID --accountId=$ACCOUNT_ID --depositYocto=1 --gas=100000000000000 unwrap '' ``` #### Verify balances of the account for fNEAR and wNEAR ```bash near view $CONTRACT_ID ft_balance_of '{"account_id": "'$ACCOUNT_ID'"}' near view wrap.testnet ft_balance_of '{"account_id": "'$ACCOUNT_ID'"}' ```

hieple7985_guess-num-sm

.gitpod.yml README.md contract Cargo.toml README.md src lib.rs frontend App.js __mocks__ fileMock.js assets css global.css img logo-black.svg logo-white.svg js near config.js utils.js index.html index.js integration-tests rs Cargo.toml src tests.rs ts package.json src main.ava.ts package.json

near-blank-project Smart Contract ================== A [smart contract] written in [Rust] for an app initialized with [create-near-app] Quick Start =========== Before you compile this code, you will need to install Rust with [correct target] Exploring The Code ================== 1. The main smart contract code lives in `src/lib.rs`. 2. Tests: You can run smart contract tests with the `./test` script. This runs standard Rust tests using [cargo] with a `--nocapture` flag so that you can see any debug info you print to the console. [smart contract]: https://docs.near.org/docs/develop/contracts/overview [Rust]: https://www.rust-lang.org/ [create-near-app]: https://github.com/near/create-near-app [correct target]: https://github.com/near/near-sdk-rs#pre-requisites [cargo]: https://doc.rust-lang.org/book/ch01-03-hello-cargo.html near-blank-project ================== This [React] app was initialized with [create-near-app] Quick Start =========== To run this project locally: 1. Prerequisites: Make sure you've installed [Node.js] ≥ 12 2. Install dependencies: `yarn install` 3. Run the local development server: `yarn dev` (see `package.json` for a full list of `scripts` you can run with `yarn`) Now you'll have a local development environment backed by the NEAR TestNet! Go ahead and play with the app and the code. As you make code changes, the app will automatically reload. Exploring The Code ================== 1. The "backend" code lives in the `/contract` folder. See the README there for more info. 2. The frontend code lives in the `/frontend` folder. `/frontend/index.html` is a great place to start exploring. Note that it loads in `/frontend/assets/js/index.js`, where you can learn how the frontend connects to the NEAR blockchain. 3. Tests: there are different kinds of tests for the frontend and the smart contract. See `contract/README` for info about how it's tested. The frontend code gets tested with [jest]. You can run both of these at once with `yarn run test`. Deploy ====== Every smart contract in NEAR has its [own associated account][NEAR accounts]. When you run `yarn dev`, your smart contract gets deployed to the live NEAR TestNet with a throwaway account. When you're ready to make it permanent, here's how. Step 0: Install near-cli (optional) ------------------------------------- [near-cli] is a command line interface (CLI) for interacting with the NEAR blockchain. It was installed to the local `node_modules` folder when you ran `yarn install`, but for best ergonomics you may want to install it globally: yarn install --global near-cli Or, if you'd rather use the locally-installed version, you can prefix all `near` commands with `npx` Ensure that it's installed with `near --version` (or `npx near --version`) Step 1: Create an account for the contract ------------------------------------------ Each account on NEAR can have at most one contract deployed to it. If you've already created an account such as `your-name.testnet`, you can deploy your contract to `near-blank-project.your-name.testnet`. Assuming you've already created an account on [NEAR Wallet], here's how to create `near-blank-project.your-name.testnet`: 1. Authorize NEAR CLI, following the commands it gives you: near login 2. Create a subaccount (replace `YOUR-NAME` below with your actual account name): near create-account near-blank-project.YOUR-NAME.testnet --masterAccount YOUR-NAME.testnet Step 2: set contract name in code --------------------------------- Modify the line in `src/config.js` that sets the account name of the contract. Set it to the account id you used above. const CONTRACT_NAME = process.env.CONTRACT_NAME || 'near-blank-project.YOUR-NAME.testnet' Step 3: deploy! --------------- One command: yarn deploy As you can see in `package.json`, this does two things: 1. builds & deploys smart contract to NEAR TestNet 2. builds & deploys frontend code to GitHub using [gh-pages]. This will only work if the project already has a repository set up on GitHub. Feel free to modify the `deploy` script in `package.json` to deploy elsewhere. Troubleshooting =============== On Windows, if you're seeing an error containing `EPERM` it may be related to spaces in your path. Please see [this issue](https://github.com/zkat/npx/issues/209) for more details. [React]: https://reactjs.org/ [create-near-app]: https://github.com/near/create-near-app [Node.js]: https://nodejs.org/en/download/package-manager/ [jest]: https://jestjs.io/ [NEAR accounts]: https://docs.near.org/docs/concepts/account [NEAR Wallet]: https://wallet.testnet.near.org/ [near-cli]: https://github.com/near/near-cli [gh-pages]: https://github.com/tschaub/gh-pages

near-cli-rs_near-cli-rs.github.io

index.html

nearprotocol_near-global-footer

README.md footer.css footer.txt

# NEAR Global Footer Provides a CDN-powered endpoint to access the HTML and CSS for the near.org footer for use throughout the ecosystem. ## Access We use [Statically](https://statically.io/) to access these files and provide CDN functionality. To access the latest from `main`: - `https://cdn.statically.io/gh/nearprotocol/near-global-footer/main/footer.txt` - `https://cdn.statically.io/gh/nearprotocol/near-global-footer/main/footer.css` To access from a specific commit hash, say `acdefee`: - `https://cdn.statically.io/gh/nearprotocol/near-global-footer/acdefee/footer.txt` - `https://cdn.statically.io/gh/nearprotocol/near-global-footer/acdefee/footer.css` ## Caching Statically caches all files 1 year, except for these branches that are cached for only 1 day: - `main` - `master` - `dev` - `develop` - `gh-pages` In general, reference the `main` branch and you'll get the updated code within 1 day at the longest. ## Icons The social icons are powered by Font Awesome. If you have Font Awesome included on your property already, you probably won't need to do anything. Otherwise, you can include this JavaScript file: ```html <script src="https://use.fontawesome.com/releases/v5.15.4/js/brands.js"></script> ``` ## Implementation Implementation is up to you and will depend largely on your environment. Here are a couple of working examples to get you started though. ### Static HTML/CSS ```html <link rel="https://cdn.statically.io/gh/nearprotocol/near-global-footer/main/footer.css"> <div id="global-footer"></div> <script> fetch('https://cdn.statically.io/gh/nearprotocol/near-global-footer/main/footer.txt') .then(res => res.text()) .then(html => { document.getElementById('global-footer').innerHTML = html }) </script> ``` ### React This is useful for Docusaurus sites. ```js import React, { useState, useEffect } from 'react' function Footer() { const [error, setError] = useState(null) const [markup, setMarkup] = useState([]) useEffect(() => { fetch('https://cdn.statically.io/gh/nearprotocol/near-global-footer/main/footer.txt') .then(res => res.text()) .then( html => { setMarkup(html) }, error => { setError(error) } ) }, []) if (error) { return null } else { return ( <div> <div dangerouslySetInnerHTML={{ __html: markup }} /> </div> ) } } export default Footer ```

paularah_thesis

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ProductQr.js UnionDashBoard.js play.js services auth.js ipfsFile.js theme.js utils.js wallet login index.html

# isarray `Array#isArray` for older browsers. [](http://travis-ci.org/juliangruber/isarray) [](https://www.npmjs.org/package/isarray) [ ](https://ci.testling.com/juliangruber/isarray) ## Usage ```js var isArray = require('isarray'); console.log(isArray([])); // => true console.log(isArray({})); // => false ``` ## Installation With [npm](http://npmjs.org) do ```bash $ npm install isarray ``` Then bundle for the browser with [browserify](https://github.com/substack/browserify). With [component](http://component.io) do ```bash $ component install juliangruber/isarray ``` ## License (MIT) Copyright (c) 2013 Julian Gruber &lt;julian@juliangruber.com&gt; Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # fast-json-stable-stringify Deterministic `JSON.stringify()` - a faster version of [@substack](https://github.com/substack)'s json-stable-strigify without [jsonify](https://github.com/substack/jsonify). You can also pass in a custom comparison function. [](https://travis-ci.org/epoberezkin/fast-json-stable-stringify) [](https://coveralls.io/github/epoberezkin/fast-json-stable-stringify?branch=master) # example ``` js var stringify = require('fast-json-stable-stringify'); var obj = { c: 8, b: [{z:6,y:5,x:4},7], a: 3 }; console.log(stringify(obj)); ``` output: ``` {"a":3,"b":[{"x":4,"y":5,"z":6},7],"c":8} ``` # methods ``` js var stringify = require('fast-json-stable-stringify') ``` ## var str = stringify(obj, opts) Return a deterministic stringified string `str` from the object `obj`. ## options ### cmp If `opts` is given, you can supply an `opts.cmp` to have a custom comparison function for object keys. Your function `opts.cmp` is called with these parameters: ``` js opts.cmp({ key: akey, value: avalue }, { key: bkey, value: bvalue }) ``` For example, to sort on the object key names in reverse order you could write: ``` js var stringify = require('fast-json-stable-stringify'); var obj = { c: 8, b: [{z:6,y:5,x:4},7], a: 3 }; var s = stringify(obj, function (a, b) { return a.key < b.key ? 1 : -1; }); console.log(s); ``` which results in the output string: ``` {"c":8,"b":[{"z":6,"y":5,"x":4},7],"a":3} ``` Or if you wanted to sort on the object values in reverse order, you could write: ``` var stringify = require('fast-json-stable-stringify'); var obj = { d: 6, c: 5, b: [{z:3,y:2,x:1},9], a: 10 }; var s = stringify(obj, function (a, b) { return a.value < b.value ? 1 : -1; }); console.log(s); ``` which outputs: ``` {"d":6,"c":5,"b":[{"z":3,"y":2,"x":1},9],"a":10} ``` ### cycles Pass `true` in `opts.cycles` to stringify circular property as `__cycle__` - the result will not be a valid JSON string in this case. TypeError will be thrown in case of circular object without this option. # install With [npm](https://npmjs.org) do: ``` npm install fast-json-stable-stringify ``` # benchmark To run benchmark (requires Node.js 6+): ``` node benchmark ``` Results: ``` fast-json-stable-stringify x 17,189 ops/sec ±1.43% (83 runs sampled) json-stable-stringify x 13,634 ops/sec ±1.39% (85 runs sampled) fast-stable-stringify x 20,212 ops/sec ±1.20% (84 runs sampled) faster-stable-stringify x 15,549 ops/sec ±1.12% (84 runs sampled) The fastest is fast-stable-stringify ``` ## Enterprise support fast-json-stable-stringify package is a part of [Tidelift enterprise subscription](https://tidelift.com/subscription/pkg/npm-fast-json-stable-stringify?utm_source=npm-fast-json-stable-stringify&utm_medium=referral&utm_campaign=enterprise&utm_term=repo) - it provides a centralised commercial support to open-source software users, in addition to the support provided by software maintainers. ## Security contact To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. Please do NOT report security vulnerability via GitHub issues. # license [MIT](https://github.com/epoberezkin/fast-json-stable-stringify/blob/master/LICENSE) # tr46.js > An implementation of the [Unicode TR46 specification](http://unicode.org/reports/tr46/). ## Installation [Node.js](http://nodejs.org) `>= 6` is required. To install, type this at the command line: ```shell npm install tr46 ``` ## API ### `toASCII(domainName[, options])` Converts a string of Unicode symbols to a case-folded Punycode string of ASCII symbols. Available options: * [`checkBidi`](#checkBidi) * [`checkHyphens`](#checkHyphens) * [`checkJoiners`](#checkJoiners) * [`processingOption`](#processingOption) * [`useSTD3ASCIIRules`](#useSTD3ASCIIRules) * [`verifyDNSLength`](#verifyDNSLength) ### `toUnicode(domainName[, options])` Converts a case-folded Punycode string of ASCII symbols to a string of Unicode symbols. Available options: * [`checkBidi`](#checkBidi) * [`checkHyphens`](#checkHyphens) * [`checkJoiners`](#checkJoiners) * [`useSTD3ASCIIRules`](#useSTD3ASCIIRules) ## Options ### `checkBidi` Type: `Boolean` Default value: `false` When set to `true`, any bi-directional text within the input will be checked for validation. ### `checkHyphens` Type: `Boolean` Default value: `false` When set to `true`, the positions of any hyphen characters within the input will be checked for validation. ### `checkJoiners` Type: `Boolean` Default value: `false` When set to `true`, any word joiner characters within the input will be checked for validation. ### `processingOption` Type: `String` Default value: `"nontransitional"` When set to `"transitional"`, symbols within the input will be validated according to the older IDNA2003 protocol. When set to `"nontransitional"`, the current IDNA2008 protocol will be used. ### `useSTD3ASCIIRules` Type: `Boolean` Default value: `false` When set to `true`, input will be validated according to [STD3 Rules](http://unicode.org/reports/tr46/#STD3_Rules). ### `verifyDNSLength` Type: `Boolean` Default value: `false` When set to `true`, the length of each DNS label within the input will be checked for validation. # axios [](https://www.npmjs.org/package/axios) [](https://travis-ci.org/axios/axios) [](https://coveralls.io/r/mzabriskie/axios) [](https://packagephobia.now.sh/result?p=axios) [](http://npm-stat.com/charts.html?package=axios) [](https://gitter.im/mzabriskie/axios) [](https://www.codetriage.com/axios/axios) Promise based HTTP client for the browser and node.js ## Features - Make [XMLHttpRequests](https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest) from the browser - Make [http](http://nodejs.org/api/http.html) requests from node.js - Supports the [Promise](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise) API - Intercept request and response - Transform request and response data - Cancel requests - Automatic transforms for JSON data - Client side support for protecting against [XSRF](http://en.wikipedia.org/wiki/Cross-site_request_forgery) ## Browser Support  |  |  |  |  |  | --- | --- | --- | --- | --- | --- | Latest ✔ | Latest ✔ | Latest ✔ | Latest ✔ | Latest ✔ | 11 ✔ | [](https://saucelabs.com/u/axios) ## Installing Using npm: ```bash $ npm install axios ``` Using bower: ```bash $ bower install axios ``` Using yarn: ```bash $ yarn add axios ``` Using cdn: ```html <script src="https://unpkg.com/axios/dist/axios.min.js"></script> ``` ## Example ### note: CommonJS usage In order to gain the TypeScript typings (for intellisense / autocomplete) while using CommonJS imports with `require()` use the following approach: ```js const axios = require('axios').default; // axios.<method> will now provide autocomplete and parameter typings ``` Performing a `GET` request ```js const axios = require('axios'); // Make a request for a user with a given ID axios.get('/user?ID=12345') .then(function (response) { // handle success console.log(response); }) .catch(function (error) { // handle error console.log(error); }) .finally(function () { // always executed }); // Optionally the request above could also be done as axios.get('/user', { params: { ID: 12345 } }) .then(function (response) { console.log(response); }) .catch(function (error) { console.log(error); }) .finally(function () { // always executed }); // Want to use async/await? Add the `async` keyword to your outer function/method. async function getUser() { try { const response = await axios.get('/user?ID=12345'); console.log(response); } catch (error) { console.error(error); } } ``` > **NOTE:** `async/await` is part of ECMAScript 2017 and is not supported in Internet > Explorer and older browsers, so use with caution. Performing a `POST` request ```js axios.post('/user', { firstName: 'Fred', lastName: 'Flintstone' }) .then(function (response) { console.log(response); }) .catch(function (error) { console.log(error); }); ``` Performing multiple concurrent requests ```js function getUserAccount() { return axios.get('/user/12345'); } function getUserPermissions() { return axios.get('/user/12345/permissions'); } axios.all([getUserAccount(), getUserPermissions()]) .then(axios.spread(function (acct, perms) { // Both requests are now complete })); ``` ## axios API Requests can be made by passing the relevant config to `axios`. ##### axios(config) ```js // Send a POST request axios({ method: 'post', url: '/user/12345', data: { firstName: 'Fred', lastName: 'Flintstone' } }); ``` ```js // GET request for remote image axios({ method: 'get', url: 'http://bit.ly/2mTM3nY', responseType: 'stream' }) .then(function (response) { response.data.pipe(fs.createWriteStream('ada_lovelace.jpg')) }); ``` ##### axios(url[, config]) ```js // Send a GET request (default method) axios('/user/12345'); ``` ### Request method aliases For convenience aliases have been provided for all supported request methods. ##### axios.request(config) ##### axios.get(url[, config]) ##### axios.delete(url[, config]) ##### axios.head(url[, config]) ##### axios.options(url[, config]) ##### axios.post(url[, data[, config]]) ##### axios.put(url[, data[, config]]) ##### axios.patch(url[, data[, config]]) ###### NOTE When using the alias methods `url`, `method`, and `data` properties don't need to be specified in config. ### Concurrency Helper functions for dealing with concurrent requests. ##### axios.all(iterable) ##### axios.spread(callback) ### Creating an instance You can create a new instance of axios with a custom config. ##### axios.create([config]) ```js const instance = axios.create({ baseURL: 'https://some-domain.com/api/', timeout: 1000, headers: {'X-Custom-Header': 'foobar'} }); ``` ### Instance methods The available instance methods are listed below. The specified config will be merged with the instance config. ##### axios#request(config) ##### axios#get(url[, config]) ##### axios#delete(url[, config]) ##### axios#head(url[, config]) ##### axios#options(url[, config]) ##### axios#post(url[, data[, config]]) ##### axios#put(url[, data[, config]]) ##### axios#patch(url[, data[, config]]) ##### axios#getUri([config]) ## Request Config These are the available config options for making requests. Only the `url` is required. Requests will default to `GET` if `method` is not specified. ```js { // `url` is the server URL that will be used for the request url: '/user', // `method` is the request method to be used when making the request method: 'get', // default // `baseURL` will be prepended to `url` unless `url` is absolute. // It can be convenient to set `baseURL` for an instance of axios to pass relative URLs // to methods of that instance. baseURL: 'https://some-domain.com/api/', // `transformRequest` allows changes to the request data before it is sent to the server // This is only applicable for request methods 'PUT', 'POST', 'PATCH' and 'DELETE' // The last function in the array must return a string or an instance of Buffer, ArrayBuffer, // FormData or Stream // You may modify the headers object. transformRequest: [function (data, headers) { // Do whatever you want to transform the data return data; }], // `transformResponse` allows changes to the response data to be made before // it is passed to then/catch transformResponse: [function (data) { // Do whatever you want to transform the data return data; }], // `headers` are custom headers to be sent headers: {'X-Requested-With': 'XMLHttpRequest'}, // `params` are the URL parameters to be sent with the request // Must be a plain object or a URLSearchParams object params: { ID: 12345 }, // `paramsSerializer` is an optional function in charge of serializing `params` // (e.g. https://www.npmjs.com/package/qs, http://api.jquery.com/jquery.param/) paramsSerializer: function (params) { return Qs.stringify(params, {arrayFormat: 'brackets'}) }, // `data` is the data to be sent as the request body // Only applicable for request methods 'PUT', 'POST', and 'PATCH' // When no `transformRequest` is set, must be of one of the following types: // - string, plain object, ArrayBuffer, ArrayBufferView, URLSearchParams // - Browser only: FormData, File, Blob // - Node only: Stream, Buffer data: { firstName: 'Fred' }, // syntax alternative to send data into the body // method post // only the value is sent, not the key data: 'Country=Brasil&City=Belo Horizonte', // `timeout` specifies the number of milliseconds before the request times out. // If the request takes longer than `timeout`, the request will be aborted. timeout: 1000, // default is `0` (no timeout) // `withCredentials` indicates whether or not cross-site Access-Control requests // should be made using credentials withCredentials: false, // default // `adapter` allows custom handling of requests which makes testing easier. // Return a promise and supply a valid response (see lib/adapters/README.md). adapter: function (config) { /* ... */ }, // `auth` indicates that HTTP Basic auth should be used, and supplies credentials. // This will set an `Authorization` header, overwriting any existing // `Authorization` custom headers you have set using `headers`. // Please note that only HTTP Basic auth is configurable through this parameter. // For Bearer tokens and such, use `Authorization` custom headers instead. auth: { username: 'janedoe', password: 's00pers3cret' }, // `responseType` indicates the type of data that the server will respond with // options are: 'arraybuffer', 'document', 'json', 'text', 'stream' // browser only: 'blob' responseType: 'json', // default // `responseEncoding` indicates encoding to use for decoding responses // Note: Ignored for `responseType` of 'stream' or client-side requests responseEncoding: 'utf8', // default // `xsrfCookieName` is the name of the cookie to use as a value for xsrf token xsrfCookieName: 'XSRF-TOKEN', // default // `xsrfHeaderName` is the name of the http header that carries the xsrf token value xsrfHeaderName: 'X-XSRF-TOKEN', // default // `onUploadProgress` allows handling of progress events for uploads onUploadProgress: function (progressEvent) { // Do whatever you want with the native progress event }, // `onDownloadProgress` allows handling of progress events for downloads onDownloadProgress: function (progressEvent) { // Do whatever you want with the native progress event }, // `maxContentLength` defines the max size of the http response content in bytes allowed maxContentLength: 2000, // `validateStatus` defines whether to resolve or reject the promise for a given // HTTP response status code. If `validateStatus` returns `true` (or is set to `null` // or `undefined`), the promise will be resolved; otherwise, the promise will be // rejected. validateStatus: function (status) { return status >= 200 && status < 300; // default }, // `maxRedirects` defines the maximum number of redirects to follow in node.js. // If set to 0, no redirects will be followed. maxRedirects: 5, // default // `socketPath` defines a UNIX Socket to be used in node.js. // e.g. '/var/run/docker.sock' to send requests to the docker daemon. // Only either `socketPath` or `proxy` can be specified. // If both are specified, `socketPath` is used. socketPath: null, // default // `httpAgent` and `httpsAgent` define a custom agent to be used when performing http // and https requests, respectively, in node.js. This allows options to be added like // `keepAlive` that are not enabled by default. httpAgent: new http.Agent({ keepAlive: true }), httpsAgent: new https.Agent({ keepAlive: true }), // 'proxy' defines the hostname and port of the proxy server. // You can also define your proxy using the conventional `http_proxy` and // `https_proxy` environment variables. If you are using environment variables // for your proxy configuration, you can also define a `no_proxy` environment // variable as a comma-separated list of domains that should not be proxied. // Use `false` to disable proxies, ignoring environment variables. // `auth` indicates that HTTP Basic auth should be used to connect to the proxy, and // supplies credentials. // This will set an `Proxy-Authorization` header, overwriting any existing // `Proxy-Authorization` custom headers you have set using `headers`. proxy: { host: '127.0.0.1', port: 9000, auth: { username: 'mikeymike', password: 'rapunz3l' } }, // `cancelToken` specifies a cancel token that can be used to cancel the request // (see Cancellation section below for details) cancelToken: new CancelToken(function (cancel) { }) } ``` ## Response Schema The response for a request contains the following information. ```js { // `data` is the response that was provided by the server data: {}, // `status` is the HTTP status code from the server response status: 200, // `statusText` is the HTTP status message from the server response statusText: 'OK', // `headers` the headers that the server responded with // All header names are lower cased headers: {}, // `config` is the config that was provided to `axios` for the request config: {}, // `request` is the request that generated this response // It is the last ClientRequest instance in node.js (in redirects) // and an XMLHttpRequest instance in the browser request: {} } ``` When using `then`, you will receive the response as follows: ```js axios.get('/user/12345') .then(function (response) { console.log(response.data); console.log(response.status); console.log(response.statusText); console.log(response.headers); console.log(response.config); }); ``` When using `catch`, or passing a [rejection callback](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/then) as second parameter of `then`, the response will be available through the `error` object as explained in the [Handling Errors](#handling-errors) section. ## Config Defaults You can specify config defaults that will be applied to every request. ### Global axios defaults ```js axios.defaults.baseURL = 'https://api.example.com'; axios.defaults.headers.common['Authorization'] = AUTH_TOKEN; axios.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded'; ``` ### Custom instance defaults ```js // Set config defaults when creating the instance const instance = axios.create({ baseURL: 'https://api.example.com' }); // Alter defaults after instance has been created instance.defaults.headers.common['Authorization'] = AUTH_TOKEN; ``` ### Config order of precedence Config will be merged with an order of precedence. The order is library defaults found in [lib/defaults.js](https://github.com/axios/axios/blob/master/lib/defaults.js#L28), then `defaults` property of the instance, and finally `config` argument for the request. The latter will take precedence over the former. Here's an example. ```js // Create an instance using the config defaults provided by the library // At this point the timeout config value is `0` as is the default for the library const instance = axios.create(); // Override timeout default for the library // Now all requests using this instance will wait 2.5 seconds before timing out instance.defaults.timeout = 2500; // Override timeout for this request as it's known to take a long time instance.get('/longRequest', { timeout: 5000 }); ``` ## Interceptors You can intercept requests or responses before they are handled by `then` or `catch`. ```js // Add a request interceptor axios.interceptors.request.use(function (config) { // Do something before request is sent return config; }, function (error) { // Do something with request error return Promise.reject(error); }); // Add a response interceptor axios.interceptors.response.use(function (response) { // Any status code that lie within the range of 2xx cause this function to trigger // Do something with response data return response; }, function (error) { // Any status codes that falls outside the range of 2xx cause this function to trigger // Do something with response error return Promise.reject(error); }); ``` If you need to remove an interceptor later you can. ```js const myInterceptor = axios.interceptors.request.use(function () {/*...*/}); axios.interceptors.request.eject(myInterceptor); ``` You can add interceptors to a custom instance of axios. ```js const instance = axios.create(); instance.interceptors.request.use(function () {/*...*/}); ``` ## Handling Errors ```js axios.get('/user/12345') .catch(function (error) { if (error.response) { // The request was made and the server responded with a status code // that falls out of the range of 2xx console.log(error.response.data); console.log(error.response.status); console.log(error.response.headers); } else if (error.request) { // The request was made but no response was received // `error.request` is an instance of XMLHttpRequest in the browser and an instance of // http.ClientRequest in node.js console.log(error.request); } else { // Something happened in setting up the request that triggered an Error console.log('Error', error.message); } console.log(error.config); }); ``` Using the `validateStatus` config option, you can define HTTP code(s) that should throw an error. ```js axios.get('/user/12345', { validateStatus: function (status) { return status < 500; // Reject only if the status code is greater than or equal to 500 } }) ``` Using `toJSON` you get an object with more information about the HTTP error. ```js axios.get('/user/12345') .catch(function (error) { console.log(error.toJSON()); }); ``` ## Cancellation You can cancel a request using a *cancel token*. > The axios cancel token API is based on the withdrawn [cancelable promises proposal](https://github.com/tc39/proposal-cancelable-promises). You can create a cancel token using the `CancelToken.source` factory as shown below: ```js const CancelToken = axios.CancelToken; const source = CancelToken.source(); axios.get('/user/12345', { cancelToken: source.token }).catch(function (thrown) { if (axios.isCancel(thrown)) { console.log('Request canceled', thrown.message); } else { // handle error } }); axios.post('/user/12345', { name: 'new name' }, { cancelToken: source.token }) // cancel the request (the message parameter is optional) source.cancel('Operation canceled by the user.'); ``` You can also create a cancel token by passing an executor function to the `CancelToken` constructor: ```js const CancelToken = axios.CancelToken; let cancel; axios.get('/user/12345', { cancelToken: new CancelToken(function executor(c) { // An executor function receives a cancel function as a parameter cancel = c; }) }); // cancel the request cancel(); ``` > Note: you can cancel several requests with the same cancel token. ## Using application/x-www-form-urlencoded format By default, axios serializes JavaScript objects to `JSON`. To send data in the `application/x-www-form-urlencoded` format instead, you can use one of the following options. ### Browser In a browser, you can use the [`URLSearchParams`](https://developer.mozilla.org/en-US/docs/Web/API/URLSearchParams) API as follows: ```js const params = new URLSearchParams(); params.append('param1', 'value1'); params.append('param2', 'value2'); axios.post('/foo', params); ``` > Note that `URLSearchParams` is not supported by all browsers (see [caniuse.com](http://www.caniuse.com/#feat=urlsearchparams)), but there is a [polyfill](https://github.com/WebReflection/url-search-params) available (make sure to polyfill the global environment). Alternatively, you can encode data using the [`qs`](https://github.com/ljharb/qs) library: ```js const qs = require('qs'); axios.post('/foo', qs.stringify({ 'bar': 123 })); ``` Or in another way (ES6), ```js import qs from 'qs'; const data = { 'bar': 123 }; const options = { method: 'POST', headers: { 'content-type': 'application/x-www-form-urlencoded' }, data: qs.stringify(data), url, }; axios(options); ``` ### Node.js In node.js, you can use the [`querystring`](https://nodejs.org/api/querystring.html) module as follows: ```js const querystring = require('querystring'); axios.post('http://something.com/', querystring.stringify({ foo: 'bar' })); ``` You can also use the [`qs`](https://github.com/ljharb/qs) library. ###### NOTE The `qs` library is preferable if you need to stringify nested objects, as the `querystring` method has known issues with that use case (https://github.com/nodejs/node-v0.x-archive/issues/1665). ## Semver Until axios reaches a `1.0` release, breaking changes will be released with a new minor version. For example `0.5.1`, and `0.5.4` will have the same API, but `0.6.0` will have breaking changes. ## Promises axios depends on a native ES6 Promise implementation to be [supported](http://caniuse.com/promises). If your environment doesn't support ES6 Promises, you can [polyfill](https://github.com/jakearchibald/es6-promise). ## TypeScript axios includes [TypeScript](http://typescriptlang.org) definitions. ```typescript import axios from 'axios'; axios.get('/user?ID=12345'); ``` ## Resources * [Changelog](https://github.com/axios/axios/blob/master/CHANGELOG.md) * [Upgrade Guide](https://github.com/axios/axios/blob/master/UPGRADE_GUIDE.md) * [Ecosystem](https://github.com/axios/axios/blob/master/ECOSYSTEM.md) * [Contributing Guide](https://github.com/axios/axios/blob/master/CONTRIBUTING.md) * [Code of Conduct](https://github.com/axios/axios/blob/master/CODE_OF_CONDUCT.md) ## Credits axios is heavily inspired by the [$http service](https://docs.angularjs.org/api/ng/service/$http) provided in [Angular](https://angularjs.org/). Ultimately axios is an effort to provide a standalone `$http`-like service for use outside of Angular. ## License [MIT](LICENSE) # debug [](https://travis-ci.org/visionmedia/debug) [](https://coveralls.io/github/visionmedia/debug?branch=master) [](https://visionmedia-community-slackin.now.sh/) [](#backers) [](#sponsors) <img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png"> A tiny JavaScript debugging utility modelled after Node.js core's debugging technique. Works in Node.js and web browsers. ## Installation ```bash $ npm install debug ``` ## Usage `debug` exposes a function; simply pass this function the name of your module, and it will return a decorated version of `console.error` for you to pass debug statements to. This will allow you to toggle the debug output for different parts of your module as well as the module as a whole. Example [_app.js_](./examples/node/app.js): ```js var debug = require('debug')('http') , http = require('http') , name = 'My App'; // fake app debug('booting %o', name); http.createServer(function(req, res){ debug(req.method + ' ' + req.url); res.end('hello\n'); }).listen(3000, function(){ debug('listening'); }); // fake worker of some kind require('./worker'); ``` Example [_worker.js_](./examples/node/worker.js): ```js var a = require('debug')('worker:a') , b = require('debug')('worker:b'); function work() { a('doing lots of uninteresting work'); setTimeout(work, Math.random() * 1000); } work(); function workb() { b('doing some work'); setTimeout(workb, Math.random() * 2000); } workb(); ``` The `DEBUG` environment variable is then used to enable these based on space or comma-delimited names. Here are some examples: <img width="647" alt="screen shot 2017-08-08 at 12 53 04 pm" src="https://user-images.githubusercontent.com/71256/29091703-a6302cdc-7c38-11e7-8304-7c0b3bc600cd.png"> <img width="647" alt="screen shot 2017-08-08 at 12 53 38 pm" src="https://user-images.githubusercontent.com/71256/29091700-a62a6888-7c38-11e7-800b-db911291ca2b.png"> <img width="647" alt="screen shot 2017-08-08 at 12 53 25 pm" src="https://user-images.githubusercontent.com/71256/29091701-a62ea114-7c38-11e7-826a-2692bedca740.png"> #### Windows note On Windows the environment variable is set using the `set` command. ```cmd set DEBUG=*,-not_this ``` Note that PowerShell uses different syntax to set environment variables. ```cmd $env:DEBUG = "*,-not_this" ``` Then, run the program to be debugged as usual. ## Namespace Colors Every debug instance has a color generated for it based on its namespace name. This helps when visually parsing the debug output to identify which debug instance a debug line belongs to. #### Node.js In Node.js, colors are enabled when stderr is a TTY. You also _should_ install the [`supports-color`](https://npmjs.org/supports-color) module alongside debug, otherwise debug will only use a small handful of basic colors. <img width="521" src="https://user-images.githubusercontent.com/71256/29092181-47f6a9e6-7c3a-11e7-9a14-1928d8a711cd.png"> #### Web Browser Colors are also enabled on "Web Inspectors" that understand the `%c` formatting option. These are WebKit web inspectors, Firefox ([since version 31](https://hacks.mozilla.org/2014/05/editable-box-model-multiple-selection-sublime-text-keys-much-more-firefox-developer-tools-episode-31/)) and the Firebug plugin for Firefox (any version). <img width="524" src="https://user-images.githubusercontent.com/71256/29092033-b65f9f2e-7c39-11e7-8e32-f6f0d8e865c1.png"> ## Millisecond diff When actively developing an application it can be useful to see when the time spent between one `debug()` call and the next. Suppose for example you invoke `debug()` before requesting a resource, and after as well, the "+NNNms" will show you how much time was spent between calls. <img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png"> When stdout is not a TTY, `Date#toISOString()` is used, making it more useful for logging the debug information as shown below: <img width="647" src="https://user-images.githubusercontent.com/71256/29091956-6bd78372-7c39-11e7-8c55-c948396d6edd.png"> ## Conventions If you're using this in one or more of your libraries, you _should_ use the name of your library so that developers may toggle debugging as desired without guessing names. If you have more than one debuggers you _should_ prefix them with your library name and use ":" to separate features. For example "bodyParser" from Connect would then be "connect:bodyParser". If you append a "*" to the end of your name, it will always be enabled regardless of the setting of the DEBUG environment variable. You can then use it for normal output as well as debug output. ## Wildcards The `*` character may be used as a wildcard. Suppose for example your library has debuggers named "connect:bodyParser", "connect:compress", "connect:session", instead of listing all three with `DEBUG=connect:bodyParser,connect:compress,connect:session`, you may simply do `DEBUG=connect:*`, or to run everything using this module simply use `DEBUG=*`. You can also exclude specific debuggers by prefixing them with a "-" character. For example, `DEBUG=*,-connect:*` would include all debuggers except those starting with "connect:". ## Environment Variables When running through Node.js, you can set a few environment variables that will change the behavior of the debug logging: | Name | Purpose | |-----------|-------------------------------------------------| | `DEBUG` | Enables/disables specific debugging namespaces. | | `DEBUG_HIDE_DATE` | Hide date from debug output (non-TTY). | | `DEBUG_COLORS`| Whether or not to use colors in the debug output. | | `DEBUG_DEPTH` | Object inspection depth. | | `DEBUG_SHOW_HIDDEN` | Shows hidden properties on inspected objects. | __Note:__ The environment variables beginning with `DEBUG_` end up being converted into an Options object that gets used with `%o`/`%O` formatters. See the Node.js documentation for [`util.inspect()`](https://nodejs.org/api/util.html#util_util_inspect_object_options) for the complete list. ## Formatters Debug uses [printf-style](https://wikipedia.org/wiki/Printf_format_string) formatting. Below are the officially supported formatters: | Formatter | Representation | |-----------|----------------| | `%O` | Pretty-print an Object on multiple lines. | | `%o` | Pretty-print an Object all on a single line. | | `%s` | String. | | `%d` | Number (both integer and float). | | `%j` | JSON. Replaced with the string '[Circular]' if the argument contains circular references. | | `%%` | Single percent sign ('%'). This does not consume an argument. | ### Custom formatters You can add custom formatters by extending the `debug.formatters` object. For example, if you wanted to add support for rendering a Buffer as hex with `%h`, you could do something like: ```js const createDebug = require('debug') createDebug.formatters.h = (v) => { return v.toString('hex') } // …elsewhere const debug = createDebug('foo') debug('this is hex: %h', new Buffer('hello world')) // foo this is hex: 68656c6c6f20776f726c6421 +0ms ``` ## Browser Support You can build a browser-ready script using [browserify](https://github.com/substack/node-browserify), or just use the [browserify-as-a-service](https://wzrd.in/) [build](https://wzrd.in/standalone/debug@latest), if you don't want to build it yourself. Debug's enable state is currently persisted by `localStorage`. Consider the situation shown below where you have `worker:a` and `worker:b`, and wish to debug both. You can enable this using `localStorage.debug`: ```js localStorage.debug = 'worker:*' ``` And then refresh the page. ```js a = debug('worker:a'); b = debug('worker:b'); setInterval(function(){ a('doing some work'); }, 1000); setInterval(function(){ b('doing some work'); }, 1200); ``` ## Output streams By default `debug` will log to stderr, however this can be configured per-namespace by overriding the `log` method: Example [_stdout.js_](./examples/node/stdout.js): ```js var debug = require('debug'); var error = debug('app:error'); // by default stderr is used error('goes to stderr!'); var log = debug('app:log'); // set this namespace to log via console.log log.log = console.log.bind(console); // don't forget to bind to console! log('goes to stdout'); error('still goes to stderr!'); // set all output to go via console.info // overrides all per-namespace log settings debug.log = console.info.bind(console); error('now goes to stdout via console.info'); log('still goes to stdout, but via console.info now'); ``` ## Checking whether a debug target is enabled After you've created a debug instance, you can determine whether or not it is enabled by checking the `enabled` property: ```javascript const debug = require('debug')('http'); if (debug.enabled) { // do stuff... } ``` You can also manually toggle this property to force the debug instance to be enabled or disabled. ## Authors - TJ Holowaychuk - Nathan Rajlich - Andrew Rhyne ## Backers Support us with a monthly donation and help us continue our activities. 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Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # AssemblyScript Rtrace A tiny utility to sanitize the AssemblyScript runtime. Records allocations and frees performed by the runtime and emits an error if something is off. Also checks for leaks. Instructions ------------ Compile your module that uses the full or half runtime with `-use ASC_RTRACE=1 --explicitStart` and include an instance of this module as the import named `rtrace`. ```js const rtrace = new Rtrace({ onerror(err, info) { // handle error }, oninfo(msg) { // print message, optional }, getMemory() { // obtain the module's memory, // e.g. with --explicitStart: return instance.exports.memory; } }); const { module, instance } = await WebAssembly.instantiate(..., rtrace.install({ ...imports... }) ); instance.exports._start(); ... if (rtrace.active) { let leakCount = rtr.check(); if (leakCount) { // handle error } } ``` Note that references in globals which are not cleared before collection is performed appear as leaks, including their inner members. A TypedArray would leak itself and its backing ArrayBuffer in this case for example. This is perfectly normal and clearing all globals avoids this. # prelude.ls [](https://travis-ci.org/gkz/prelude-ls) is a functionally oriented utility library. It is powerful and flexible. Almost all of its functions are curried. It is written in, and is the recommended base library for, <a href="http://livescript.net">LiveScript</a>. See **[the prelude.ls site](http://preludels.com)** for examples, a reference, and more. You can install via npm `npm install prelude-ls` ### Development `make test` to test `make build` to build `lib` from `src` `make build-browser` to build browser versions Standard library ================ Standard library components for use with `tsc` (portable) and `asc` (assembly). Base configurations (.json) and definition files (.d.ts) are relevant to `tsc` only and not used by `asc`. A JSON with color names and its values. Based on http://dev.w3.org/csswg/css-color/#named-colors. [](https://nodei.co/npm/color-name/) ```js var colors = require('color-name'); colors.red //[255,0,0] ``` <a href="LICENSE"><img src="https://upload.wikimedia.org/wikipedia/commons/0/0c/MIT_logo.svg" width="120"/></a> # `asbuild` [](https://github.com/AssemblyScript/asbuild/stargazers) *A simple build tool for [AssemblyScript](https://assemblyscript.org) projects, similar to `cargo`, etc.* ## 🚩 Table of Contents - [Installing](#-installing) - [Usage](#-usage) - [`asb init`](#asb-init---create-an-empty-project) - [`asb test`](#asb-test---run-as-pect-tests) - [`asb fmt`](#asb-fmt---format-as-files-using-eslint) - [`asb run`](#asb-run---run-a-wasi-binary) - [`asb build`](#asb-build---compile-the-project-using-asc) - [Background](#-background) ## 🔧 Installing Install it globally ``` npm install -g asbuild ``` Or, locally as dev dependencies ``` npm install --save-dev asbuild ``` ## 💡 Usage ``` Build tool for AssemblyScript projects. Usage: asb [command] [options] Commands: asb Alias of build command, to maintain back-ward compatibility [default] asb build Compile a local package and all of its dependencies [aliases: compile, make] asb init [baseDir] Create a new AS package in an given directory asb test Run as-pect tests asb fmt [paths..] This utility formats current module using eslint. [aliases: format, lint] Options: --version Show version number [boolean] --help Show help [boolean] ``` ### `asb init` - Create an empty project ``` asb init [baseDir] Create a new AS package in an given directory Positionals: baseDir Create a sample AS project in this directory [string] [default: "."] Options: --version Show version number [boolean] --help Show help [boolean] --yes Skip the interactive prompt [boolean] [default: false] ``` ### `asb test` - Run as-pect tests ``` asb test Run as-pect tests USAGE: asb test [options] -- [aspect_options] Options: --version Show version number [boolean] --help Show help [boolean] --verbose, --vv Print out arguments passed to as-pect [boolean] [default: false] ``` ### `asb fmt` - Format AS files using ESlint ``` asb fmt [paths..] This utility formats current module using eslint. Positionals: paths Paths to format [array] [default: ["."]] Initialisation: --init Generates recommended eslint config for AS Projects [boolean] Miscellaneous --lint, --dry-run Tries to fix problems without saving the changes to the file system [boolean] [default: false] Options: --version Show version number [boolean] --help Show help ``` ### `asb run` - Run a WASI binary ``` asb run Run a WASI binary USAGE: asb run [options] [binary path] -- [binary options] Positionals: binary path to Wasm binary [string] [required] Options: --version Show version number [boolean] --help Show help [boolean] --preopen, -p comma separated list of directories to open. [default: "."] ``` ### `asb build` - Compile the project using asc ``` asb build Compile a local package and all of its dependencies USAGE: asb build [entry_file] [options] -- [asc_options] Options: --version Show version number [boolean] --help Show help [boolean] --baseDir, -d Base directory of project. [string] [default: "."] --config, -c Path to asconfig file [string] [default: "./asconfig.json"] --wat Output wat file to outDir [boolean] [default: false] --outDir Directory to place built binaries. Default "./build/<target>/" [string] --target Target for compilation [string] [default: "release"] --verbose Print out arguments passed to asc [boolean] [default: false] Examples: asb build Build release of 'assembly/index.ts to build/release/packageName.wasm asb build --target release Build a release binary asb build -- --measure Pass argument to 'asc' ``` #### Defaults ##### Project structure ``` project/ package.json asconfig.json assembly/ index.ts build/ release/ project.wasm debug/ project.wasm ``` - If no entry file passed and no `entry` field is in `asconfig.json`, `project/assembly/index.ts` is assumed. - `asconfig.json` allows for options for different compile targets, e.g. release, debug, etc. `asc` defaults to the release target. - The default build directory is `./build`, and artifacts are placed at `./build/<target>/packageName.wasm`. ##### Workspaces If a `workspace` field is added to a top level `asconfig.json` file, then each path in the array is built and placed into the top level `outDir`. For example, `asconfig.json`: ```json { "workspaces": ["a", "b"] } ``` Running `asb` in the directory below will use the top level build directory to place all the binaries. ``` project/ package.json asconfig.json a/ asconfig.json assembly/ index.ts b/ asconfig.json assembly/ index.ts build/ release/ a.wasm b.wasm debug/ a.wasm b.wasm ``` To see an example in action check out the [test workspace](./tests/build_test) ## 📖 Background Asbuild started as wrapper around `asc` to provide an easier CLI interface and now has been extened to support other commands like `init`, `test` and `fmt` just like `cargo` to become a one stop build tool for AS Projects. ## 📜 License This library is provided under the open-source [MIT license](https://choosealicense.com/licenses/mit/). These files are compiled dot templates from dot folder. Do NOT edit them directly, edit the templates and run `npm run build` from main ajv folder. # Visitor utilities for AssemblyScript Compiler transformers ## Example ### List Fields The transformer: ```ts import { ClassDeclaration, FieldDeclaration, MethodDeclaration, } from "../../as"; import { ClassDecorator, registerDecorator } from "../decorator"; import { toString } from "../utils"; class ListMembers extends ClassDecorator { visitFieldDeclaration(node: FieldDeclaration): void { if (!node.name) console.log(toString(node) + "\n"); const name = toString(node.name); const _type = toString(node.type!); this.stdout.write(name + ": " + _type + "\n"); } visitMethodDeclaration(node: MethodDeclaration): void { const name = toString(node.name); if (name == "constructor") { return; } const sig = toString(node.signature); this.stdout.write(name + ": " + sig + "\n"); } visitClassDeclaration(node: ClassDeclaration): void { this.visit(node.members); } get name(): string { return "list"; } } export = registerDecorator(new ListMembers()); ``` assembly/foo.ts: ```ts @list class Foo { a: u8; b: bool; i: i32; } ``` And then compile with `--transform` flag: ``` asc assembly/foo.ts --transform ./dist/examples/list --noEmit ``` Which prints the following to the console: ``` a: u8 b: bool i: i32 ``` ## Test Strategy - tests are copied from the [polyfill implementation](https://github.com/tc39/proposal-temporal/tree/main/polyfill/test) - tests should be removed if they relate to features that do not make sense for TS/AS, i.e. tests that validate the shape of an object do not make sense in a language with compile-time type checking - tests that fail because a feature has not been implemented yet should be left as failures. # node-tar [](https://travis-ci.org/npm/node-tar) [Fast](./benchmarks) and full-featured Tar for Node.js The API is designed to mimic the behavior of `tar(1)` on unix systems. If you are familiar with how tar works, most of this will hopefully be straightforward for you. If not, then hopefully this module can teach you useful unix skills that may come in handy someday :) ## Background A "tar file" or "tarball" is an archive of file system entries (directories, files, links, etc.) The name comes from "tape archive". If you run `man tar` on almost any Unix command line, you'll learn quite a bit about what it can do, and its history. Tar has 5 main top-level commands: * `c` Create an archive * `r` Replace entries within an archive * `u` Update entries within an archive (ie, replace if they're newer) * `t` List out the contents of an archive * `x` Extract an archive to disk The other flags and options modify how this top level function works. ## High-Level API These 5 functions are the high-level API. All of them have a single-character name (for unix nerds familiar with `tar(1)`) as well as a long name (for everyone else). All the high-level functions take the following arguments, all three of which are optional and may be omitted. 1. `options` - An optional object specifying various options 2. `paths` - An array of paths to add or extract 3. `callback` - Called when the command is completed, if async. (If sync or no file specified, providing a callback throws a `TypeError`.) If the command is sync (ie, if `options.sync=true`), then the callback is not allowed, since the action will be completed immediately. If a `file` argument is specified, and the command is async, then a `Promise` is returned. In this case, if async, a callback may be provided which is called when the command is completed. If a `file` option is not specified, then a stream is returned. For `create`, this is a readable stream of the generated archive. For `list` and `extract` this is a writable stream that an archive should be written into. If a file is not specified, then a callback is not allowed, because you're already getting a stream to work with. `replace` and `update` only work on existing archives, and so require a `file` argument. Sync commands without a file argument return a stream that acts on its input immediately in the same tick. For readable streams, this means that all of the data is immediately available by calling `stream.read()`. For writable streams, it will be acted upon as soon as it is provided, but this can be at any time. ### Warnings and Errors Tar emits warnings and errors for recoverable and unrecoverable situations, respectively. In many cases, a warning only affects a single entry in an archive, or is simply informing you that it's modifying an entry to comply with the settings provided. Unrecoverable warnings will always raise an error (ie, emit `'error'` on streaming actions, throw for non-streaming sync actions, reject the returned Promise for non-streaming async operations, or call a provided callback with an `Error` as the first argument). Recoverable errors will raise an error only if `strict: true` is set in the options. Respond to (recoverable) warnings by listening to the `warn` event. Handlers receive 3 arguments: - `code` String. One of the error codes below. This may not match `data.code`, which preserves the original error code from fs and zlib. - `message` String. More details about the error. - `data` Metadata about the error. An `Error` object for errors raised by fs and zlib. All fields are attached to errors raisd by tar. Typically contains the following fields, as relevant: - `tarCode` The tar error code. - `code` Either the tar error code, or the error code set by the underlying system. - `file` The archive file being read or written. - `cwd` Working directory for creation and extraction operations. - `entry` The entry object (if it could be created) for `TAR_ENTRY_INFO`, `TAR_ENTRY_INVALID`, and `TAR_ENTRY_ERROR` warnings. - `header` The header object (if it could be created, and the entry could not be created) for `TAR_ENTRY_INFO` and `TAR_ENTRY_INVALID` warnings. - `recoverable` Boolean. If `false`, then the warning will emit an `error`, even in non-strict mode. #### Error Codes * `TAR_ENTRY_INFO` An informative error indicating that an entry is being modified, but otherwise processed normally. For example, removing `/` or `C:\` from absolute paths if `preservePaths` is not set. * `TAR_ENTRY_INVALID` An indication that a given entry is not a valid tar archive entry, and will be skipped. This occurs when: - a checksum fails, - a `linkpath` is missing for a link type, or - a `linkpath` is provided for a non-link type. If every entry in a parsed archive raises an `TAR_ENTRY_INVALID` error, then the archive is presumed to be unrecoverably broken, and `TAR_BAD_ARCHIVE` will be raised. * `TAR_ENTRY_ERROR` The entry appears to be a valid tar archive entry, but encountered an error which prevented it from being unpacked. This occurs when: - an unrecoverable fs error happens during unpacking, - an entry has `..` in the path and `preservePaths` is not set, or - an entry is extracting through a symbolic link, when `preservePaths` is not set. * `TAR_ENTRY_UNSUPPORTED` An indication that a given entry is a valid archive entry, but of a type that is unsupported, and so will be skipped in archive creation or extracting. * `TAR_ABORT` When parsing gzipped-encoded archives, the parser will abort the parse process raise a warning for any zlib errors encountered. Aborts are considered unrecoverable for both parsing and unpacking. * `TAR_BAD_ARCHIVE` The archive file is totally hosed. This can happen for a number of reasons, and always occurs at the end of a parse or extract: - An entry body was truncated before seeing the full number of bytes. - The archive contained only invalid entries, indicating that it is likely not an archive, or at least, not an archive this library can parse. `TAR_BAD_ARCHIVE` is considered informative for parse operations, but unrecoverable for extraction. Note that, if encountered at the end of an extraction, tar WILL still have extracted as much it could from the archive, so there may be some garbage files to clean up. Errors that occur deeper in the system (ie, either the filesystem or zlib) will have their error codes left intact, and a `tarCode` matching one of the above will be added to the warning metadata or the raised error object. Errors generated by tar will have one of the above codes set as the `error.code` field as well, but since errors originating in zlib or fs will have their original codes, it's better to read `error.tarCode` if you wish to see how tar is handling the issue. ### Examples The API mimics the `tar(1)` command line functionality, with aliases for more human-readable option and function names. The goal is that if you know how to use `tar(1)` in Unix, then you know how to use `require('tar')` in JavaScript. To replicate `tar czf my-tarball.tgz files and folders`, you'd do: ```js tar.c( { gzip: <true|gzip options>, file: 'my-tarball.tgz' }, ['some', 'files', 'and', 'folders'] ).then(_ => { .. tarball has been created .. }) ``` To replicate `tar cz files and folders > my-tarball.tgz`, you'd do: ```js tar.c( // or tar.create { gzip: <true|gzip options> }, ['some', 'files', 'and', 'folders'] ).pipe(fs.createWriteStream('my-tarball.tgz')) ``` To replicate `tar xf my-tarball.tgz` you'd do: ```js tar.x( // or tar.extract( { file: 'my-tarball.tgz' } ).then(_=> { .. tarball has been dumped in cwd .. }) ``` To replicate `cat my-tarball.tgz | tar x -C some-dir --strip=1`: ```js fs.createReadStream('my-tarball.tgz').pipe( tar.x({ strip: 1, C: 'some-dir' // alias for cwd:'some-dir', also ok }) ) ``` To replicate `tar tf my-tarball.tgz`, do this: ```js tar.t({ file: 'my-tarball.tgz', onentry: entry => { .. do whatever with it .. } }) ``` To replicate `cat my-tarball.tgz | tar t` do: ```js fs.createReadStream('my-tarball.tgz') .pipe(tar.t()) .on('entry', entry => { .. do whatever with it .. }) ``` To do anything synchronous, add `sync: true` to the options. Note that sync functions don't take a callback and don't return a promise. When the function returns, it's already done. Sync methods without a file argument return a sync stream, which flushes immediately. But, of course, it still won't be done until you `.end()` it. To filter entries, add `filter: <function>` to the options. Tar-creating methods call the filter with `filter(path, stat)`. Tar-reading methods (including extraction) call the filter with `filter(path, entry)`. The filter is called in the `this`-context of the `Pack` or `Unpack` stream object. The arguments list to `tar t` and `tar x` specify a list of filenames to extract or list, so they're equivalent to a filter that tests if the file is in the list. For those who _aren't_ fans of tar's single-character command names: ``` tar.c === tar.create tar.r === tar.replace (appends to archive, file is required) tar.u === tar.update (appends if newer, file is required) tar.x === tar.extract tar.t === tar.list ``` Keep reading for all the command descriptions and options, as well as the low-level API that they are built on. ### tar.c(options, fileList, callback) [alias: tar.create] Create a tarball archive. The `fileList` is an array of paths to add to the tarball. Adding a directory also adds its children recursively. An entry in `fileList` that starts with an `@` symbol is a tar archive whose entries will be added. To add a file that starts with `@`, prepend it with `./`. The following options are supported: - `file` Write the tarball archive to the specified filename. If this is specified, then the callback will be fired when the file has been written, and a promise will be returned that resolves when the file is written. If a filename is not specified, then a Readable Stream will be returned which will emit the file data. [Alias: `f`] - `sync` Act synchronously. If this is set, then any provided file will be fully written after the call to `tar.c`. If this is set, and a file is not provided, then the resulting stream will already have the data ready to `read` or `emit('data')` as soon as you request it. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `strict` Treat warnings as crash-worthy errors. Default false. - `cwd` The current working directory for creating the archive. Defaults to `process.cwd()`. [Alias: `C`] - `prefix` A path portion to prefix onto the entries in the archive. - `gzip` Set to any truthy value to create a gzipped archive, or an object with settings for `zlib.Gzip()` [Alias: `z`] - `filter` A function that gets called with `(path, stat)` for each entry being added. Return `true` to add the entry to the archive, or `false` to omit it. - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. [Alias: `P`] - `mode` The mode to set on the created file archive - `noDirRecurse` Do not recursively archive the contents of directories. [Alias: `n`] - `follow` Set to true to pack the targets of symbolic links. Without this option, symbolic links are archived as such. [Alias: `L`, `h`] - `noPax` Suppress pax extended headers. Note that this means that long paths and linkpaths will be truncated, and large or negative numeric values may be interpreted incorrectly. - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. [Alias: `m`, `no-mtime`] - `mtime` Set to a `Date` object to force a specific `mtime` for everything added to the archive. Overridden by `noMtime`. The following options are mostly internal, but can be modified in some advanced use cases, such as re-using caches between runs. - `linkCache` A Map object containing the device and inode value for any file whose nlink is > 1, to identify hard links. - `statCache` A Map object that caches calls `lstat`. - `readdirCache` A Map object that caches calls to `readdir`. - `jobs` A number specifying how many concurrent jobs to run. Defaults to 4. - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 16 MB. ### tar.x(options, fileList, callback) [alias: tar.extract] Extract a tarball archive. The `fileList` is an array of paths to extract from the tarball. If no paths are provided, then all the entries are extracted. If the archive is gzipped, then tar will detect this and unzip it. Note that all directories that are created will be forced to be writable, readable, and listable by their owner, to avoid cases where a directory prevents extraction of child entries by virtue of its mode. Most extraction errors will cause a `warn` event to be emitted. If the `cwd` is missing, or not a directory, then the extraction will fail completely. The following options are supported: - `cwd` Extract files relative to the specified directory. Defaults to `process.cwd()`. If provided, this must exist and must be a directory. [Alias: `C`] - `file` The archive file to extract. If not specified, then a Writable stream is returned where the archive data should be written. [Alias: `f`] - `sync` Create files and directories synchronously. - `strict` Treat warnings as crash-worthy errors. Default false. - `filter` A function that gets called with `(path, entry)` for each entry being unpacked. Return `true` to unpack the entry from the archive, or `false` to skip it. - `newer` Set to true to keep the existing file on disk if it's newer than the file in the archive. [Alias: `keep-newer`, `keep-newer-files`] - `keep` Do not overwrite existing files. In particular, if a file appears more than once in an archive, later copies will not overwrite earlier copies. [Alias: `k`, `keep-existing`] - `preservePaths` Allow absolute paths, paths containing `..`, and extracting through symbolic links. By default, `/` is stripped from absolute paths, `..` paths are not extracted, and any file whose location would be modified by a symbolic link is not extracted. [Alias: `P`] - `unlink` Unlink files before creating them. Without this option, tar overwrites existing files, which preserves existing hardlinks. With this option, existing hardlinks will be broken, as will any symlink that would affect the location of an extracted file. [Alias: `U`] - `strip` Remove the specified number of leading path elements. Pathnames with fewer elements will be silently skipped. Note that the pathname is edited after applying the filter, but before security checks. [Alias: `strip-components`, `stripComponents`] - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `preserveOwner` If true, tar will set the `uid` and `gid` of extracted entries to the `uid` and `gid` fields in the archive. This defaults to true when run as root, and false otherwise. If false, then files and directories will be set with the owner and group of the user running the process. This is similar to `-p` in `tar(1)`, but ACLs and other system-specific data is never unpacked in this implementation, and modes are set by default already. [Alias: `p`] - `uid` Set to a number to force ownership of all extracted files and folders, and all implicitly created directories, to be owned by the specified user id, regardless of the `uid` field in the archive. Cannot be used along with `preserveOwner`. Requires also setting a `gid` option. - `gid` Set to a number to force ownership of all extracted files and folders, and all implicitly created directories, to be owned by the specified group id, regardless of the `gid` field in the archive. Cannot be used along with `preserveOwner`. Requires also setting a `uid` option. - `noMtime` Set to true to omit writing `mtime` value for extracted entries. [Alias: `m`, `no-mtime`] - `transform` Provide a function that takes an `entry` object, and returns a stream, or any falsey value. If a stream is provided, then that stream's data will be written instead of the contents of the archive entry. If a falsey value is provided, then the entry is written to disk as normal. (To exclude items from extraction, use the `filter` option described above.) - `onentry` A function that gets called with `(entry)` for each entry that passes the filter. The following options are mostly internal, but can be modified in some advanced use cases, such as re-using caches between runs. - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 16 MB. - `umask` Filter the modes of entries like `process.umask()`. - `dmode` Default mode for directories - `fmode` Default mode for files - `dirCache` A Map object of which directories exist. - `maxMetaEntrySize` The maximum size of meta entries that is supported. Defaults to 1 MB. Note that using an asynchronous stream type with the `transform` option will cause undefined behavior in sync extractions. [MiniPass](http://npm.im/minipass)-based streams are designed for this use case. ### tar.t(options, fileList, callback) [alias: tar.list] List the contents of a tarball archive. The `fileList` is an array of paths to list from the tarball. If no paths are provided, then all the entries are listed. If the archive is gzipped, then tar will detect this and unzip it. Returns an event emitter that emits `entry` events with `tar.ReadEntry` objects. However, they don't emit `'data'` or `'end'` events. (If you want to get actual readable entries, use the `tar.Parse` class instead.) The following options are supported: - `cwd` Extract files relative to the specified directory. Defaults to `process.cwd()`. [Alias: `C`] - `file` The archive file to list. If not specified, then a Writable stream is returned where the archive data should be written. [Alias: `f`] - `sync` Read the specified file synchronously. (This has no effect when a file option isn't specified, because entries are emitted as fast as they are parsed from the stream anyway.) - `strict` Treat warnings as crash-worthy errors. Default false. - `filter` A function that gets called with `(path, entry)` for each entry being listed. Return `true` to emit the entry from the archive, or `false` to skip it. - `onentry` A function that gets called with `(entry)` for each entry that passes the filter. This is important for when both `file` and `sync` are set, because it will be called synchronously. - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 16 MB. - `noResume` By default, `entry` streams are resumed immediately after the call to `onentry`. Set `noResume: true` to suppress this behavior. Note that by opting into this, the stream will never complete until the entry data is consumed. ### tar.u(options, fileList, callback) [alias: tar.update] Add files to an archive if they are newer than the entry already in the tarball archive. The `fileList` is an array of paths to add to the tarball. Adding a directory also adds its children recursively. An entry in `fileList` that starts with an `@` symbol is a tar archive whose entries will be added. To add a file that starts with `@`, prepend it with `./`. The following options are supported: - `file` Required. Write the tarball archive to the specified filename. [Alias: `f`] - `sync` Act synchronously. If this is set, then any provided file will be fully written after the call to `tar.c`. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `strict` Treat warnings as crash-worthy errors. Default false. - `cwd` The current working directory for adding entries to the archive. Defaults to `process.cwd()`. [Alias: `C`] - `prefix` A path portion to prefix onto the entries in the archive. - `gzip` Set to any truthy value to create a gzipped archive, or an object with settings for `zlib.Gzip()` [Alias: `z`] - `filter` A function that gets called with `(path, stat)` for each entry being added. Return `true` to add the entry to the archive, or `false` to omit it. - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. [Alias: `P`] - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 16 MB. - `noDirRecurse` Do not recursively archive the contents of directories. [Alias: `n`] - `follow` Set to true to pack the targets of symbolic links. Without this option, symbolic links are archived as such. [Alias: `L`, `h`] - `noPax` Suppress pax extended headers. Note that this means that long paths and linkpaths will be truncated, and large or negative numeric values may be interpreted incorrectly. - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. [Alias: `m`, `no-mtime`] - `mtime` Set to a `Date` object to force a specific `mtime` for everything added to the archive. Overridden by `noMtime`. ### tar.r(options, fileList, callback) [alias: tar.replace] Add files to an existing archive. Because later entries override earlier entries, this effectively replaces any existing entries. The `fileList` is an array of paths to add to the tarball. Adding a directory also adds its children recursively. An entry in `fileList` that starts with an `@` symbol is a tar archive whose entries will be added. To add a file that starts with `@`, prepend it with `./`. The following options are supported: - `file` Required. Write the tarball archive to the specified filename. [Alias: `f`] - `sync` Act synchronously. If this is set, then any provided file will be fully written after the call to `tar.c`. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `strict` Treat warnings as crash-worthy errors. Default false. - `cwd` The current working directory for adding entries to the archive. Defaults to `process.cwd()`. [Alias: `C`] - `prefix` A path portion to prefix onto the entries in the archive. - `gzip` Set to any truthy value to create a gzipped archive, or an object with settings for `zlib.Gzip()` [Alias: `z`] - `filter` A function that gets called with `(path, stat)` for each entry being added. Return `true` to add the entry to the archive, or `false` to omit it. - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. [Alias: `P`] - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 16 MB. - `noDirRecurse` Do not recursively archive the contents of directories. [Alias: `n`] - `follow` Set to true to pack the targets of symbolic links. Without this option, symbolic links are archived as such. [Alias: `L`, `h`] - `noPax` Suppress pax extended headers. Note that this means that long paths and linkpaths will be truncated, and large or negative numeric values may be interpreted incorrectly. - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. [Alias: `m`, `no-mtime`] - `mtime` Set to a `Date` object to force a specific `mtime` for everything added to the archive. Overridden by `noMtime`. ## Low-Level API ### class tar.Pack A readable tar stream. Has all the standard readable stream interface stuff. `'data'` and `'end'` events, `read()` method, `pause()` and `resume()`, etc. #### constructor(options) The following options are supported: - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `strict` Treat warnings as crash-worthy errors. Default false. - `cwd` The current working directory for creating the archive. Defaults to `process.cwd()`. - `prefix` A path portion to prefix onto the entries in the archive. - `gzip` Set to any truthy value to create a gzipped archive, or an object with settings for `zlib.Gzip()` - `filter` A function that gets called with `(path, stat)` for each entry being added. Return `true` to add the entry to the archive, or `false` to omit it. - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. - `linkCache` A Map object containing the device and inode value for any file whose nlink is > 1, to identify hard links. - `statCache` A Map object that caches calls `lstat`. - `readdirCache` A Map object that caches calls to `readdir`. - `jobs` A number specifying how many concurrent jobs to run. Defaults to 4. - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 16 MB. - `noDirRecurse` Do not recursively archive the contents of directories. - `follow` Set to true to pack the targets of symbolic links. Without this option, symbolic links are archived as such. - `noPax` Suppress pax extended headers. Note that this means that long paths and linkpaths will be truncated, and large or negative numeric values may be interpreted incorrectly. - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. - `mtime` Set to a `Date` object to force a specific `mtime` for everything added to the archive. Overridden by `noMtime`. #### add(path) Adds an entry to the archive. Returns the Pack stream. #### write(path) Adds an entry to the archive. Returns true if flushed. #### end() Finishes the archive. ### class tar.Pack.Sync Synchronous version of `tar.Pack`. ### class tar.Unpack A writable stream that unpacks a tar archive onto the file system. All the normal writable stream stuff is supported. `write()` and `end()` methods, `'drain'` events, etc. Note that all directories that are created will be forced to be writable, readable, and listable by their owner, to avoid cases where a directory prevents extraction of child entries by virtue of its mode. `'close'` is emitted when it's done writing stuff to the file system. Most unpack errors will cause a `warn` event to be emitted. If the `cwd` is missing, or not a directory, then an error will be emitted. #### constructor(options) - `cwd` Extract files relative to the specified directory. Defaults to `process.cwd()`. If provided, this must exist and must be a directory. - `filter` A function that gets called with `(path, entry)` for each entry being unpacked. Return `true` to unpack the entry from the archive, or `false` to skip it. - `newer` Set to true to keep the existing file on disk if it's newer than the file in the archive. - `keep` Do not overwrite existing files. In particular, if a file appears more than once in an archive, later copies will not overwrite earlier copies. - `preservePaths` Allow absolute paths, paths containing `..`, and extracting through symbolic links. By default, `/` is stripped from absolute paths, `..` paths are not extracted, and any file whose location would be modified by a symbolic link is not extracted. - `unlink` Unlink files before creating them. Without this option, tar overwrites existing files, which preserves existing hardlinks. With this option, existing hardlinks will be broken, as will any symlink that would affect the location of an extracted file. - `strip` Remove the specified number of leading path elements. Pathnames with fewer elements will be silently skipped. Note that the pathname is edited after applying the filter, but before security checks. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `umask` Filter the modes of entries like `process.umask()`. - `dmode` Default mode for directories - `fmode` Default mode for files - `dirCache` A Map object of which directories exist. - `maxMetaEntrySize` The maximum size of meta entries that is supported. Defaults to 1 MB. - `preserveOwner` If true, tar will set the `uid` and `gid` of extracted entries to the `uid` and `gid` fields in the archive. This defaults to true when run as root, and false otherwise. If false, then files and directories will be set with the owner and group of the user running the process. This is similar to `-p` in `tar(1)`, but ACLs and other system-specific data is never unpacked in this implementation, and modes are set by default already. - `win32` True if on a windows platform. Causes behavior where filenames containing `<|>?` chars are converted to windows-compatible values while being unpacked. - `uid` Set to a number to force ownership of all extracted files and folders, and all implicitly created directories, to be owned by the specified user id, regardless of the `uid` field in the archive. Cannot be used along with `preserveOwner`. Requires also setting a `gid` option. - `gid` Set to a number to force ownership of all extracted files and folders, and all implicitly created directories, to be owned by the specified group id, regardless of the `gid` field in the archive. Cannot be used along with `preserveOwner`. Requires also setting a `uid` option. - `noMtime` Set to true to omit writing `mtime` value for extracted entries. - `transform` Provide a function that takes an `entry` object, and returns a stream, or any falsey value. If a stream is provided, then that stream's data will be written instead of the contents of the archive entry. If a falsey value is provided, then the entry is written to disk as normal. (To exclude items from extraction, use the `filter` option described above.) - `strict` Treat warnings as crash-worthy errors. Default false. - `onentry` A function that gets called with `(entry)` for each entry that passes the filter. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") ### class tar.Unpack.Sync Synchronous version of `tar.Unpack`. Note that using an asynchronous stream type with the `transform` option will cause undefined behavior in sync unpack streams. [MiniPass](http://npm.im/minipass)-based streams are designed for this use case. ### class tar.Parse A writable stream that parses a tar archive stream. All the standard writable stream stuff is supported. If the archive is gzipped, then tar will detect this and unzip it. Emits `'entry'` events with `tar.ReadEntry` objects, which are themselves readable streams that you can pipe wherever. Each `entry` will not emit until the one before it is flushed through, so make sure to either consume the data (with `on('data', ...)` or `.pipe(...)`) or throw it away with `.resume()` to keep the stream flowing. #### constructor(options) Returns an event emitter that emits `entry` events with `tar.ReadEntry` objects. The following options are supported: - `strict` Treat warnings as crash-worthy errors. Default false. - `filter` A function that gets called with `(path, entry)` for each entry being listed. Return `true` to emit the entry from the archive, or `false` to skip it. - `onentry` A function that gets called with `(entry)` for each entry that passes the filter. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") #### abort(error) Stop all parsing activities. This is called when there are zlib errors. It also emits an unrecoverable warning with the error provided. ### class tar.ReadEntry extends [MiniPass](http://npm.im/minipass) A representation of an entry that is being read out of a tar archive. It has the following fields: - `extended` The extended metadata object provided to the constructor. - `globalExtended` The global extended metadata object provided to the constructor. - `remain` The number of bytes remaining to be written into the stream. - `blockRemain` The number of 512-byte blocks remaining to be written into the stream. - `ignore` Whether this entry should be ignored. - `meta` True if this represents metadata about the next entry, false if it represents a filesystem object. - All the fields from the header, extended header, and global extended header are added to the ReadEntry object. So it has `path`, `type`, `size, `mode`, and so on. #### constructor(header, extended, globalExtended) Create a new ReadEntry object with the specified header, extended header, and global extended header values. ### class tar.WriteEntry extends [MiniPass](http://npm.im/minipass) A representation of an entry that is being written from the file system into a tar archive. Emits data for the Header, and for the Pax Extended Header if one is required, as well as any body data. Creating a WriteEntry for a directory does not also create WriteEntry objects for all of the directory contents. It has the following fields: - `path` The path field that will be written to the archive. By default, this is also the path from the cwd to the file system object. - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `myuid` If supported, the uid of the user running the current process. - `myuser` The `env.USER` string if set, or `''`. Set as the entry `uname` field if the file's `uid` matches `this.myuid`. - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 1 MB. - `linkCache` A Map object containing the device and inode value for any file whose nlink is > 1, to identify hard links. - `statCache` A Map object that caches calls `lstat`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. - `cwd` The current working directory for creating the archive. Defaults to `process.cwd()`. - `absolute` The absolute path to the entry on the filesystem. By default, this is `path.resolve(this.cwd, this.path)`, but it can be overridden explicitly. - `strict` Treat warnings as crash-worthy errors. Default false. - `win32` True if on a windows platform. Causes behavior where paths replace `\` with `/` and filenames containing the windows-compatible forms of `<|>?:` characters are converted to actual `<|>?:` characters in the archive. - `noPax` Suppress pax extended headers. Note that this means that long paths and linkpaths will be truncated, and large or negative numeric values may be interpreted incorrectly. - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. #### constructor(path, options) `path` is the path of the entry as it is written in the archive. The following options are supported: - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 1 MB. - `linkCache` A Map object containing the device and inode value for any file whose nlink is > 1, to identify hard links. - `statCache` A Map object that caches calls `lstat`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. - `cwd` The current working directory for creating the archive. Defaults to `process.cwd()`. - `absolute` The absolute path to the entry on the filesystem. By default, this is `path.resolve(this.cwd, this.path)`, but it can be overridden explicitly. - `strict` Treat warnings as crash-worthy errors. Default false. - `win32` True if on a windows platform. Causes behavior where paths replace `\` with `/`. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. - `umask` Set to restrict the modes on the entries in the archive, somewhat like how umask works on file creation. Defaults to `process.umask()` on unix systems, or `0o22` on Windows. #### warn(message, data) If strict, emit an error with the provided message. Othewise, emit a `'warn'` event with the provided message and data. ### class tar.WriteEntry.Sync Synchronous version of tar.WriteEntry ### class tar.WriteEntry.Tar A version of tar.WriteEntry that gets its data from a tar.ReadEntry instead of from the filesystem. #### constructor(readEntry, options) `readEntry` is the entry being read out of another archive. The following options are supported: - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. - `strict` Treat warnings as crash-worthy errors. Default false. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. ### class tar.Header A class for reading and writing header blocks. It has the following fields: - `nullBlock` True if decoding a block which is entirely composed of `0x00` null bytes. (Useful because tar files are terminated by at least 2 null blocks.) - `cksumValid` True if the checksum in the header is valid, false otherwise. - `needPax` True if the values, as encoded, will require a Pax extended header. - `path` The path of the entry. - `mode` The 4 lowest-order octal digits of the file mode. That is, read/write/execute permissions for world, group, and owner, and the setuid, setgid, and sticky bits. - `uid` Numeric user id of the file owner - `gid` Numeric group id of the file owner - `size` Size of the file in bytes - `mtime` Modified time of the file - `cksum` The checksum of the header. This is generated by adding all the bytes of the header block, treating the checksum field itself as all ascii space characters (that is, `0x20`). - `type` The human-readable name of the type of entry this represents, or the alphanumeric key if unknown. - `typeKey` The alphanumeric key for the type of entry this header represents. - `linkpath` The target of Link and SymbolicLink entries. - `uname` Human-readable user name of the file owner - `gname` Human-readable group name of the file owner - `devmaj` The major portion of the device number. Always `0` for files, directories, and links. - `devmin` The minor portion of the device number. Always `0` for files, directories, and links. - `atime` File access time. - `ctime` File change time. #### constructor(data, [offset=0]) `data` is optional. It is either a Buffer that should be interpreted as a tar Header starting at the specified offset and continuing for 512 bytes, or a data object of keys and values to set on the header object, and eventually encode as a tar Header. #### decode(block, offset) Decode the provided buffer starting at the specified offset. Buffer length must be greater than 512 bytes. #### set(data) Set the fields in the data object. #### encode(buffer, offset) Encode the header fields into the buffer at the specified offset. Returns `this.needPax` to indicate whether a Pax Extended Header is required to properly encode the specified data. ### class tar.Pax An object representing a set of key-value pairs in an Pax extended header entry. It has the following fields. Where the same name is used, they have the same semantics as the tar.Header field of the same name. - `global` True if this represents a global extended header, or false if it is for a single entry. - `atime` - `charset` - `comment` - `ctime` - `gid` - `gname` - `linkpath` - `mtime` - `path` - `size` - `uid` - `uname` - `dev` - `ino` - `nlink` #### constructor(object, global) Set the fields set in the object. `global` is a boolean that defaults to false. #### encode() Return a Buffer containing the header and body for the Pax extended header entry, or `null` if there is nothing to encode. #### encodeBody() Return a string representing the body of the pax extended header entry. #### encodeField(fieldName) Return a string representing the key/value encoding for the specified fieldName, or `''` if the field is unset. ### tar.Pax.parse(string, extended, global) Return a new Pax object created by parsing the contents of the string provided. If the `extended` object is set, then also add the fields from that object. (This is necessary because multiple metadata entries can occur in sequence.) ### tar.types A translation table for the `type` field in tar headers. #### tar.types.name.get(code) Get the human-readable name for a given alphanumeric code. #### tar.types.code.get(name) Get the alphanumeric code for a given human-readable name. # cliui  [](https://www.npmjs.com/package/cliui) [](https://conventionalcommits.org)  easily create complex multi-column command-line-interfaces. ## Example ```js const ui = require('cliui')() ui.div('Usage: $0 [command] [options]') ui.div({ text: 'Options:', padding: [2, 0, 1, 0] }) ui.div( { text: "-f, --file", width: 20, padding: [0, 4, 0, 4] }, { text: "the file to load." + chalk.green("(if this description is long it wraps).") , width: 20 }, { text: chalk.red("[required]"), align: 'right' } ) console.log(ui.toString()) ``` ## Deno/ESM Support As of `v7` `cliui` supports [Deno](https://github.com/denoland/deno) and [ESM](https://nodejs.org/api/esm.html#esm_ecmascript_modules): ```typescript import cliui from "https://deno.land/x/cliui/deno.ts"; const ui = cliui({}) ui.div('Usage: $0 [command] [options]') ui.div({ text: 'Options:', padding: [2, 0, 1, 0] }) ui.div({ text: "-f, --file", width: 20, padding: [0, 4, 0, 4] }) console.log(ui.toString()) ``` <img width="500" src="screenshot.png"> ## Layout DSL cliui exposes a simple layout DSL: If you create a single `ui.div`, passing a string rather than an object: * `\n`: characters will be interpreted as new rows. * `\t`: characters will be interpreted as new columns. * `\s`: characters will be interpreted as padding. **as an example...** ```js var ui = require('./')({ width: 60 }) ui.div( 'Usage: node ./bin/foo.js\n' + ' <regex>\t provide a regex\n' + ' <glob>\t provide a glob\t [required]' ) console.log(ui.toString()) ``` **will output:** ```shell Usage: node ./bin/foo.js <regex> provide a regex <glob> provide a glob [required] ``` ## Methods ```js cliui = require('cliui') ``` ### cliui({width: integer}) Specify the maximum width of the UI being generated. If no width is provided, cliui will try to get the current window's width and use it, and if that doesn't work, width will be set to `80`. ### cliui({wrap: boolean}) Enable or disable the wrapping of text in a column. ### cliui.div(column, column, column) Create a row with any number of columns, a column can either be a string, or an object with the following options: * **text:** some text to place in the column. * **width:** the width of a column. * **align:** alignment, `right` or `center`. * **padding:** `[top, right, bottom, left]`. * **border:** should a border be placed around the div? ### cliui.span(column, column, column) Similar to `div`, except the next row will be appended without a new line being created. ### cliui.resetOutput() Resets the UI elements of the current cliui instance, maintaining the values set for `width` and `wrap`. Like `chown -R`. Takes the same arguments as `fs.chown()` # Optionator <a name="optionator" /> Optionator is a JavaScript/Node.js option parsing and help generation library used by [eslint](http://eslint.org), [Grasp](http://graspjs.com), [LiveScript](http://livescript.net), [esmangle](https://github.com/estools/esmangle), [escodegen](https://github.com/estools/escodegen), and [many more](https://www.npmjs.com/browse/depended/optionator). For an online demo, check out the [Grasp online demo](http://www.graspjs.com/#demo). [About](#about) &middot; [Usage](#usage) &middot; [Settings Format](#settings-format) &middot; [Argument Format](#argument-format) ## Why? The problem with other option parsers, such as `yargs` or `minimist`, is they just accept all input, valid or not. With Optionator, if you mistype an option, it will give you an error (with a suggestion for what you meant). If you give the wrong type of argument for an option, it will give you an error rather than supplying the wrong input to your application. $ cmd --halp Invalid option '--halp' - perhaps you meant '--help'? $ cmd --count str Invalid value for option 'count' - expected type Int, received value: str. Other helpful features include reformatting the help text based on the size of the console, so that it fits even if the console is narrow, and accepting not just an array (eg. process.argv), but a string or object as well, making things like testing much easier. ## About Optionator uses [type-check](https://github.com/gkz/type-check) and [levn](https://github.com/gkz/levn) behind the scenes to cast and verify input according the specified types. MIT license. Version 0.9.1 npm install optionator For updates on Optionator, [follow me on twitter](https://twitter.com/gkzahariev). Optionator is a Node.js module, but can be used in the browser as well if packed with webpack/browserify. ## Usage `require('optionator');` returns a function. It has one property, `VERSION`, the current version of the library as a string. This function is called with an object specifying your options and other information, see the [settings format section](#settings-format). This in turn returns an object with three properties, `parse`, `parseArgv`, `generateHelp`, and `generateHelpForOption`, which are all functions. ```js var optionator = require('optionator')({ prepend: 'Usage: cmd [options]', append: 'Version 1.0.0', options: [{ option: 'help', alias: 'h', type: 'Boolean', description: 'displays help' }, { option: 'count', alias: 'c', type: 'Int', description: 'number of things', example: 'cmd --count 2' }] }); var options = optionator.parseArgv(process.argv); if (options.help) { console.log(optionator.generateHelp()); } ... ``` ### parse(input, parseOptions) `parse` processes the `input` according to your settings, and returns an object with the results. ##### arguments * input - `[String] | Object | String` - the input you wish to parse * parseOptions - `{slice: Int}` - all options optional - `slice` specifies how much to slice away from the beginning if the input is an array or string - by default `0` for string, `2` for array (works with `process.argv`) ##### returns `Object` - the parsed options, each key is a camelCase version of the option name (specified in dash-case), and each value is the processed value for that option. Positional values are in an array under the `_` key. ##### example ```js parse(['node', 't.js', '--count', '2', 'positional']); // {count: 2, _: ['positional']} parse('--count 2 positional'); // {count: 2, _: ['positional']} parse({count: 2, _:['positional']}); // {count: 2, _: ['positional']} ``` ### parseArgv(input) `parseArgv` works exactly like `parse`, but only for array input and it slices off the first two elements. ##### arguments * input - `[String]` - the input you wish to parse ##### returns See "returns" section in "parse" ##### example ```js parseArgv(process.argv); ``` ### generateHelp(helpOptions) `generateHelp` produces help text based on your settings. ##### arguments * helpOptions - `{showHidden: Boolean, interpolate: Object}` - all options optional - `showHidden` specifies whether to show options with `hidden: true` specified, by default it is `false` - `interpolate` specify data to be interpolated in `prepend` and `append` text, `{{key}}` is the format - eg. `generateHelp({interpolate:{version: '0.4.2'}})`, will change this `append` text: `Version {{version}}` to `Version 0.4.2` ##### returns `String` - the generated help text ##### example ```js generateHelp(); /* "Usage: cmd [options] positional -h, --help displays help -c, --count Int number of things Version 1.0.0 "*/ ``` ### generateHelpForOption(optionName) `generateHelpForOption` produces expanded help text for the specified with `optionName` option. If an `example` was specified for the option, it will be displayed, and if a `longDescription` was specified, it will display that instead of the `description`. ##### arguments * optionName - `String` - the name of the option to display ##### returns `String` - the generated help text for the option ##### example ```js generateHelpForOption('count'); /* "-c, --count Int description: number of things example: cmd --count 2 "*/ ``` ## Settings Format When your `require('optionator')`, you get a function that takes in a settings object. This object has the type: { prepend: String, append: String, options: [{heading: String} | { option: String, alias: [String] | String, type: String, enum: [String], default: String, restPositional: Boolean, required: Boolean, overrideRequired: Boolean, dependsOn: [String] | String, concatRepeatedArrays: Boolean | (Boolean, Object), mergeRepeatedObjects: Boolean, description: String, longDescription: String, example: [String] | String }], helpStyle: { aliasSeparator: String, typeSeparator: String, descriptionSeparator: String, initialIndent: Int, secondaryIndent: Int, maxPadFactor: Number }, mutuallyExclusive: [[String | [String]]], concatRepeatedArrays: Boolean | (Boolean, Object), // deprecated, set in defaults object mergeRepeatedObjects: Boolean, // deprecated, set in defaults object positionalAnywhere: Boolean, typeAliases: Object, defaults: Object } All of the properties are optional (the `Maybe` has been excluded for brevities sake), except for having either `heading: String` or `option: String` in each object in the `options` array. ### Top Level Properties * `prepend` is an optional string to be placed before the options in the help text * `append` is an optional string to be placed after the options in the help text * `options` is a required array specifying your options and headings, the options and headings will be displayed in the order specified * `helpStyle` is an optional object which enables you to change the default appearance of some aspects of the help text * `mutuallyExclusive` is an optional array of arrays of either strings or arrays of strings. The top level array is a list of rules, each rule is a list of elements - each element can be either a string (the name of an option), or a list of strings (a group of option names) - there will be an error if more than one element is present * `concatRepeatedArrays` see description under the "Option Properties" heading - use at the top level is deprecated, if you want to set this for all options, use the `defaults` property * `mergeRepeatedObjects` see description under the "Option Properties" heading - use at the top level is deprecated, if you want to set this for all options, use the `defaults` property * `positionalAnywhere` is an optional boolean (defaults to `true`) - when `true` it allows positional arguments anywhere, when `false`, all arguments after the first positional one are taken to be positional as well, even if they look like a flag. For example, with `positionalAnywhere: false`, the arguments `--flag --boom 12 --crack` would have two positional arguments: `12` and `--crack` * `typeAliases` is an optional object, it allows you to set aliases for types, eg. `{Path: 'String'}` would allow you to use the type `Path` as an alias for the type `String` * `defaults` is an optional object following the option properties format, which specifies default values for all options. A default will be overridden if manually set. For example, you can do `default: { type: "String" }` to set the default type of all options to `String`, and then override that default in an individual option by setting the `type` property #### Heading Properties * `heading` a required string, the name of the heading #### Option Properties * `option` the required name of the option - use dash-case, without the leading dashes * `alias` is an optional string or array of strings which specify any aliases for the option * `type` is a required string in the [type check](https://github.com/gkz/type-check) [format](https://github.com/gkz/type-check#type-format), this will be used to cast the inputted value and validate it * `enum` is an optional array of strings, each string will be parsed by [levn](https://github.com/gkz/levn) - the argument value must be one of the resulting values - each potential value must validate against the specified `type` * `default` is a optional string, which will be parsed by [levn](https://github.com/gkz/levn) and used as the default value if none is set - the value must validate against the specified `type` * `restPositional` is an optional boolean - if set to `true`, everything after the option will be taken to be a positional argument, even if it looks like a named argument * `required` is an optional boolean - if set to `true`, the option parsing will fail if the option is not defined * `overrideRequired` is a optional boolean - if set to `true` and the option is used, and there is another option which is required but not set, it will override the need for the required option and there will be no error - this is useful if you have required options and want to use `--help` or `--version` flags * `concatRepeatedArrays` is an optional boolean or tuple with boolean and options object (defaults to `false`) - when set to `true` and an option contains an array value and is repeated, the subsequent values for the flag will be appended rather than overwriting the original value - eg. option `g` of type `[String]`: `-g a -g b -g c,d` will result in `['a','b','c','d']` You can supply an options object by giving the following value: `[true, options]`. The one currently supported option is `oneValuePerFlag`, this only allows one array value per flag. This is useful if your potential values contain a comma. * `mergeRepeatedObjects` is an optional boolean (defaults to `false`) - when set to `true` and an option contains an object value and is repeated, the subsequent values for the flag will be merged rather than overwriting the original value - eg. option `g` of type `Object`: `-g a:1 -g b:2 -g c:3,d:4` will result in `{a: 1, b: 2, c: 3, d: 4}` * `dependsOn` is an optional string or array of strings - if simply a string (the name of another option), it will make sure that that other option is set, if an array of strings, depending on whether `'and'` or `'or'` is first, it will either check whether all (`['and', 'option-a', 'option-b']`), or at least one (`['or', 'option-a', 'option-b']`) other options are set * `description` is an optional string, which will be displayed next to the option in the help text * `longDescription` is an optional string, it will be displayed instead of the `description` when `generateHelpForOption` is used * `example` is an optional string or array of strings with example(s) for the option - these will be displayed when `generateHelpForOption` is used #### Help Style Properties * `aliasSeparator` is an optional string, separates multiple names from each other - default: ' ,' * `typeSeparator` is an optional string, separates the type from the names - default: ' ' * `descriptionSeparator` is an optional string , separates the description from the padded name and type - default: ' ' * `initialIndent` is an optional int - the amount of indent for options - default: 2 * `secondaryIndent` is an optional int - the amount of indent if wrapped fully (in addition to the initial indent) - default: 4 * `maxPadFactor` is an optional number - affects the default level of padding for the names/type, it is multiplied by the average of the length of the names/type - default: 1.5 ## Argument Format At the highest level there are two types of arguments: named, and positional. Name arguments of any length are prefixed with `--` (eg. `--go`), and those of one character may be prefixed with either `--` or `-` (eg. `-g`). There are two types of named arguments: boolean flags (eg. `--problemo`, `-p`) which take no value and result in a `true` if they are present, the falsey `undefined` if they are not present, or `false` if present and explicitly prefixed with `no` (eg. `--no-problemo`). Named arguments with values (eg. `--tseries 800`, `-t 800`) are the other type. If the option has a type `Boolean` it will automatically be made into a boolean flag. Any other type results in a named argument that takes a value. For more information about how to properly set types to get the value you want, take a look at the [type check](https://github.com/gkz/type-check) and [levn](https://github.com/gkz/levn) pages. You can group single character arguments that use a single `-`, however all except the last must be boolean flags (which take no value). The last may be a boolean flag, or an argument which takes a value - eg. `-ba 2` is equivalent to `-b -a 2`. Positional arguments are all those values which do not fall under the above - they can be anywhere, not just at the end. For example, in `cmd -b one -a 2 two` where `b` is a boolean flag, and `a` has the type `Number`, there are two positional arguments, `one` and `two`. Everything after an `--` is positional, even if it looks like a named argument. You may optionally use `=` to separate option names from values, for example: `--count=2`. If you specify the option `NUM`, then any argument using a single `-` followed by a number will be valid and will set the value of `NUM`. Eg. `-2` will be parsed into `NUM: 2`. If duplicate named arguments are present, the last one will be taken. ## Technical About `optionator` is written in [LiveScript](http://livescript.net/) - a language that compiles to JavaScript. It uses [levn](https://github.com/gkz/levn) to cast arguments to their specified type, and uses [type-check](https://github.com/gkz/type-check) to validate values. It also uses the [prelude.ls](http://preludels.com/) library. # y18n [![Build Status][travis-image]][travis-url] [![Coverage Status][coveralls-image]][coveralls-url] [![NPM version][npm-image]][npm-url] [![js-standard-style][standard-image]][standard-url] [](https://conventionalcommits.org) The bare-bones internationalization library used by yargs. Inspired by [i18n](https://www.npmjs.com/package/i18n). ## Examples _simple string translation:_ ```js var __ = require('y18n').__ console.log(__('my awesome string %s', 'foo')) ``` output: `my awesome string foo` _using tagged template literals_ ```js var __ = require('y18n').__ var str = 'foo' console.log(__`my awesome string ${str}`) ``` output: `my awesome string foo` _pluralization support:_ ```js var __n = require('y18n').__n console.log(__n('one fish %s', '%d fishes %s', 2, 'foo')) ``` output: `2 fishes foo` ## JSON Language Files The JSON language files should be stored in a `./locales` folder. File names correspond to locales, e.g., `en.json`, `pirate.json`. When strings are observed for the first time they will be added to the JSON file corresponding to the current locale. ## Methods ### require('y18n')(config) Create an instance of y18n with the config provided, options include: * `directory`: the locale directory, default `./locales`. * `updateFiles`: should newly observed strings be updated in file, default `true`. * `locale`: what locale should be used. * `fallbackToLanguage`: should fallback to a language-only file (e.g. `en.json`) be allowed if a file matching the locale does not exist (e.g. `en_US.json`), default `true`. ### y18n.\_\_(str, arg, arg, arg) Print a localized string, `%s` will be replaced with `arg`s. This function can also be used as a tag for a template literal. You can use it like this: <code>__&#96;hello ${'world'}&#96;</code>. This will be equivalent to `__('hello %s', 'world')`. ### y18n.\_\_n(singularString, pluralString, count, arg, arg, arg) Print a localized string with appropriate pluralization. If `%d` is provided in the string, the `count` will replace this placeholder. ### y18n.setLocale(str) Set the current locale being used. ### y18n.getLocale() What locale is currently being used? ### y18n.updateLocale(obj) Update the current locale with the key value pairs in `obj`. ## License ISC [travis-url]: https://travis-ci.org/yargs/y18n [travis-image]: https://img.shields.io/travis/yargs/y18n.svg [coveralls-url]: https://coveralls.io/github/yargs/y18n [coveralls-image]: https://img.shields.io/coveralls/yargs/y18n.svg [npm-url]: https://npmjs.org/package/y18n [npm-image]: https://img.shields.io/npm/v/y18n.svg [standard-image]: https://img.shields.io/badge/code%20style-standard-brightgreen.svg [standard-url]: https://github.com/feross/standard ## assemblyscript-temporal An implementation of temporal within AssemblyScript, with an initial focus on non-timezone-aware classes and functionality. ### Why? AssemblyScript has minimal `Date` support, however, the JS Date API itself is terrible and people tend not to use it that often. As a result libraries like moment / luxon have become staple replacements. However, there is now a [relatively mature TC39 proposal](https://github.com/tc39/proposal-temporal) that adds greatly improved date support to JS. The goal of this project is to implement Temporal for AssemblyScript. ### Usage This library currently supports the following types: #### `PlainDateTime` A `PlainDateTime` represents a calendar date and wall-clock time that does not carry time zone information, e.g. December 7th, 1995 at 3:00 PM (in the Gregorian calendar). For detailed documentation see the [TC39 Temporal proposal website](https://tc39.es/proposal-temporal/docs/plaindatetime.html), this implementation follows the specification as closely as possible. You can create a `PlainDateTime` from individual components, a string or an object literal: ```javascript datetime = new PlainDateTime(1976, 11, 18, 15, 23, 30, 123, 456, 789); datetime.year; // 2019; datetime.month; // 11; // ... datetime.nanosecond; // 789; datetime = PlainDateTime.from("1976-11-18T12:34:56"); datetime.toString(); // "1976-11-18T12:34:56" datetime = PlainDateTime.from({ year: 1966, month: 3, day: 3 }); datetime.toString(); // "1966-03-03T00:00:00" ``` There are various ways you can manipulate a date: ```javascript // use 'with' to copy a date but with various property values overriden datetime = new PlainDateTime(1976, 11, 18, 15, 23, 30, 123, 456, 789); datetime.with({ year: 2019 }).toString(); // "2019-11-18T15:23:30.123456789" // use 'add' or 'substract' to add / subtract a duration datetime = PlainDateTime.from("2020-01-12T15:00"); datetime.add({ months: 1 }).toString(); // "2020-02-12T15:00:00"); // add / subtract support Duration objects or object literals datetime.add(new Duration(1)).toString(); // "2021-01-12T15:00:00"); ``` You can compare dates and check for equality ```javascript dt1 = PlainDateTime.from("1976-11-18"); dt2 = PlainDateTime.from("2019-10-29"); PlainDateTime.compare(dt1, dt1); // 0 PlainDateTime.compare(dt1, dt2); // -1 dt1.equals(dt1); // true ``` Currently `PlainDateTime` only supports the ISO 8601 (Gregorian) calendar. #### `PlainDate` A `PlainDate` object represents a calendar date that is not associated with a particular time or time zone, e.g. August 24th, 2006. For detailed documentation see the [TC39 Temporal proposal website](https://tc39.es/proposal-temporal/docs/plaindate.html), this implementation follows the specification as closely as possible. The `PlainDate` API is almost identical to `PlainDateTime`, so see above for API usage examples. #### `PlainTime` A `PlainTime` object represents a wall-clock time that is not associated with a particular date or time zone, e.g. 7:39 PM. For detailed documentation see the [TC39 Temporal proposal website](https://tc39.es/proposal-temporal/docs/plaintime.html), this implementation follows the specification as closely as possible. The `PlainTime` API is almost identical to `PlainDateTime`, so see above for API usage examples. #### `PlainMonthDay` A date without a year component. This is useful to express things like "Bastille Day is on the 14th of July". For detailed documentation see the [TC39 Temporal proposal website](https://tc39.es/proposal-temporal/docs/plainmonthday.html) , this implementation follows the specification as closely as possible. ```javascript const monthDay = PlainMonthDay.from({ month: 7, day: 14 }); // => 07-14 const date = monthDay.toPlainDate({ year: 2030 }); // => 2030-07-14 date.dayOfWeek; // => 7 ``` The `PlainMonthDay` API is almost identical to `PlainDateTime`, so see above for more API usage examples. #### `PlainYearMonth` A date without a day component. This is useful to express things like "the October 2020 meeting". For detailed documentation see the [TC39 Temporal proposal website](https://tc39.es/proposal-temporal/docs/plainyearmonth.html) , this implementation follows the specification as closely as possible. The `PlainYearMonth` API is almost identical to `PlainDateTime`, so see above for API usage examples. #### `now` The `now` object has several methods which give information about the current time and date. ```javascript dateTime = now.plainDateTimeISO(); dateTime.toString(); // 2021-04-01T12:05:47.357 ``` ## Contributing This project is open source, MIT licensed and your contributions are very much welcomed. There is a [brief document that outlines implementation progress and priorities](./development.md). # type-check [](https://travis-ci.org/gkz/type-check) <a name="type-check" /> `type-check` is a library which allows you to check the types of JavaScript values at runtime with a Haskell like type syntax. It is great for checking external input, for testing, or even for adding a bit of safety to your internal code. It is a major component of [levn](https://github.com/gkz/levn). MIT license. Version 0.4.0. Check out the [demo](http://gkz.github.io/type-check/). For updates on `type-check`, [follow me on twitter](https://twitter.com/gkzahariev). npm install type-check ## Quick Examples ```js // Basic types: var typeCheck = require('type-check').typeCheck; typeCheck('Number', 1); // true typeCheck('Number', 'str'); // false typeCheck('Error', new Error); // true typeCheck('Undefined', undefined); // true // Comment typeCheck('count::Number', 1); // true // One type OR another type: typeCheck('Number | String', 2); // true typeCheck('Number | String', 'str'); // true // Wildcard, matches all types: typeCheck('*', 2) // true // Array, all elements of a single type: typeCheck('[Number]', [1, 2, 3]); // true typeCheck('[Number]', [1, 'str', 3]); // false // Tuples, or fixed length arrays with elements of different types: typeCheck('(String, Number)', ['str', 2]); // true typeCheck('(String, Number)', ['str']); // false typeCheck('(String, Number)', ['str', 2, 5]); // false // Object properties: typeCheck('{x: Number, y: Boolean}', {x: 2, y: false}); // true typeCheck('{x: Number, y: Boolean}', {x: 2}); // false typeCheck('{x: Number, y: Maybe Boolean}', {x: 2}); // true typeCheck('{x: Number, y: Boolean}', {x: 2, y: false, z: 3}); // false typeCheck('{x: Number, y: Boolean, ...}', {x: 2, y: false, z: 3}); // true // A particular type AND object properties: typeCheck('RegExp{source: String, ...}', /re/i); // true typeCheck('RegExp{source: String, ...}', {source: 're'}); // false // Custom types: var opt = {customTypes: {Even: { typeOf: 'Number', validate: function(x) { return x % 2 === 0; }}}}; typeCheck('Even', 2, opt); // true // Nested: var type = '{a: (String, [Number], {y: Array, ...}), b: Error{message: String, ...}}' typeCheck(type, {a: ['hi', [1, 2, 3], {y: [1, 'ms']}], b: new Error('oh no')}); // true ``` Check out the [type syntax format](#syntax) and [guide](#guide). ## Usage `require('type-check');` returns an object that exposes four properties. `VERSION` is the current version of the library as a string. `typeCheck`, `parseType`, and `parsedTypeCheck` are functions. ```js // typeCheck(type, input, options); typeCheck('Number', 2); // true // parseType(type); var parsedType = parseType('Number'); // object // parsedTypeCheck(parsedType, input, options); parsedTypeCheck(parsedType, 2); // true ``` ### typeCheck(type, input, options) `typeCheck` checks a JavaScript value `input` against `type` written in the [type format](#type-format) (and taking account the optional `options`) and returns whether the `input` matches the `type`. ##### arguments * type - `String` - the type written in the [type format](#type-format) which to check against * input - `*` - any JavaScript value, which is to be checked against the type * options - `Maybe Object` - an optional parameter specifying additional options, currently the only available option is specifying [custom types](#custom-types) ##### returns `Boolean` - whether the input matches the type ##### example ```js typeCheck('Number', 2); // true ``` ### parseType(type) `parseType` parses string `type` written in the [type format](#type-format) into an object representing the parsed type. ##### arguments * type - `String` - the type written in the [type format](#type-format) which to parse ##### returns `Object` - an object in the parsed type format representing the parsed type ##### example ```js parseType('Number'); // [{type: 'Number'}] ``` ### parsedTypeCheck(parsedType, input, options) `parsedTypeCheck` checks a JavaScript value `input` against parsed `type` in the parsed type format (and taking account the optional `options`) and returns whether the `input` matches the `type`. Use this in conjunction with `parseType` if you are going to use a type more than once. ##### arguments * type - `Object` - the type in the parsed type format which to check against * input - `*` - any JavaScript value, which is to be checked against the type * options - `Maybe Object` - an optional parameter specifying additional options, currently the only available option is specifying [custom types](#custom-types) ##### returns `Boolean` - whether the input matches the type ##### example ```js parsedTypeCheck([{type: 'Number'}], 2); // true var parsedType = parseType('String'); parsedTypeCheck(parsedType, 'str'); // true ``` <a name="type-format" /> ## Type Format ### Syntax White space is ignored. The root node is a __Types__. * __Identifier__ = `[\$\w]+` - a group of any lower or upper case letters, numbers, underscores, or dollar signs - eg. `String` * __Type__ = an `Identifier`, an `Identifier` followed by a `Structure`, just a `Structure`, or a wildcard `*` - eg. `String`, `Object{x: Number}`, `{x: Number}`, `Array{0: String, 1: Boolean, length: Number}`, `*` * __Types__ = optionally a comment (an `Identifier` followed by a `::`), optionally the identifier `Maybe`, one or more `Type`, separated by `|` - eg. `Number`, `String | Date`, `Maybe Number`, `Maybe Boolean | String` * __Structure__ = `Fields`, or a `Tuple`, or an `Array` - eg. `{x: Number}`, `(String, Number)`, `[Date]` * __Fields__ = a `{`, followed one or more `Field` separated by a comma `,` (trailing comma `,` is permitted), optionally an `...` (always preceded by a comma `,`), followed by a `}` - eg. `{x: Number, y: String}`, `{k: Function, ...}` * __Field__ = an `Identifier`, followed by a colon `:`, followed by `Types` - eg. `x: Date | String`, `y: Boolean` * __Tuple__ = a `(`, followed by one or more `Types` separated by a comma `,` (trailing comma `,` is permitted), followed by a `)` - eg `(Date)`, `(Number, Date)` * __Array__ = a `[` followed by exactly one `Types` followed by a `]` - eg. `[Boolean]`, `[Boolean | Null]` ### Guide `type-check` uses `Object.toString` to find out the basic type of a value. Specifically, ```js {}.toString.call(VALUE).slice(8, -1) {}.toString.call(true).slice(8, -1) // 'Boolean' ``` A basic type, eg. `Number`, uses this check. This is much more versatile than using `typeof` - for example, with `document`, `typeof` produces `'object'` which isn't that useful, and our technique produces `'HTMLDocument'`. You may check for multiple types by separating types with a `|`. The checker proceeds from left to right, and passes if the value is any of the types - eg. `String | Boolean` first checks if the value is a string, and then if it is a boolean. If it is none of those, then it returns false. Adding a `Maybe` in front of a list of multiple types is the same as also checking for `Null` and `Undefined` - eg. `Maybe String` is equivalent to `Undefined | Null | String`. You may add a comment to remind you of what the type is for by following an identifier with a `::` before a type (or multiple types). The comment is simply thrown out. The wildcard `*` matches all types. There are three types of structures for checking the contents of a value: 'fields', 'tuple', and 'array'. If used by itself, a 'fields' structure will pass with any type of object as long as it is an instance of `Object` and the properties pass - this allows for duck typing - eg. `{x: Boolean}`. To check if the properties pass, and the value is of a certain type, you can specify the type - eg. `Error{message: String}`. If you want to make a field optional, you can simply use `Maybe` - eg. `{x: Boolean, y: Maybe String}` will still pass if `y` is undefined (or null). If you don't care if the value has properties beyond what you have specified, you can use the 'etc' operator `...` - eg. `{x: Boolean, ...}` will match an object with an `x` property that is a boolean, and with zero or more other properties. For an array, you must specify one or more types (separated by `|`) - it will pass for something of any length as long as each element passes the types provided - eg. `[Number]`, `[Number | String]`. A tuple checks for a fixed number of elements, each of a potentially different type. Each element is separated by a comma - eg. `(String, Number)`. An array and tuple structure check that the value is of type `Array` by default, but if another type is specified, they will check for that instead - eg. `Int32Array[Number]`. You can use the wildcard `*` to search for any type at all. Check out the [type precedence](https://github.com/zaboco/type-precedence) library for type-check. ## Options Options is an object. It is an optional parameter to the `typeCheck` and `parsedTypeCheck` functions. The only current option is `customTypes`. <a name="custom-types" /> ### Custom Types __Example:__ ```js var options = { customTypes: { Even: { typeOf: 'Number', validate: function(x) { return x % 2 === 0; } } } }; typeCheck('Even', 2, options); // true typeCheck('Even', 3, options); // false ``` `customTypes` allows you to set up custom types for validation. The value of this is an object. The keys of the object are the types you will be matching. Each value of the object will be an object having a `typeOf` property - a string, and `validate` property - a function. The `typeOf` property is the type the value should be (optional - if not set only `validate` will be used), and `validate` is a function which should return true if the value is of that type. `validate` receives one parameter, which is the value that we are checking. ## Technical About `type-check` is written in [LiveScript](http://livescript.net/) - a language that compiles to JavaScript. It also uses the [prelude.ls](http://preludels.com/) library.  Moo! ==== Moo is a highly-optimised tokenizer/lexer generator. Use it to tokenize your strings, before parsing 'em with a parser like [nearley](https://github.com/hardmath123/nearley) or whatever else you're into. * [Fast](#is-it-fast) * [Convenient](#usage) * uses [Regular Expressions](#on-regular-expressions) * tracks [Line Numbers](#line-numbers) * handles [Keywords](#keywords) * supports [States](#states) * custom [Errors](#errors) * is even [Iterable](#iteration) * has no dependencies * 4KB minified + gzipped * Moo! Is it fast? ----------- Yup! Flying-cows-and-singed-steak fast. Moo is the fastest JS tokenizer around. It's **~2–10x** faster than most other tokenizers; it's a **couple orders of magnitude** faster than some of the slower ones. Define your tokens **using regular expressions**. Moo will compile 'em down to a **single RegExp for performance**. It uses the new ES6 **sticky flag** where possible to make things faster; otherwise it falls back to an almost-as-efficient workaround. (For more than you ever wanted to know about this, read [adventures in the land of substrings and RegExps](http://mrale.ph/blog/2016/11/23/making-less-dart-faster.html).) You _might_ be able to go faster still by writing your lexer by hand rather than using RegExps, but that's icky. Oh, and it [avoids parsing RegExps by itself](https://hackernoon.com/the-madness-of-parsing-real-world-javascript-regexps-d9ee336df983#.2l8qu3l76). Because that would be horrible. Usage ----- First, you need to do the needful: `$ npm install moo`, or whatever will ship this code to your computer. Alternatively, grab the `moo.js` file by itself and slap it into your web page via a `<script>` tag; moo is completely standalone. Then you can start roasting your very own lexer/tokenizer: ```js const moo = require('moo') let lexer = moo.compile({ WS: /[ \t]+/, comment: /\/\/.*?$/, number: /0|[1-9][0-9]*/, string: /"(?:\\["\\]|[^\n"\\])*"/, lparen: '(', rparen: ')', keyword: ['while', 'if', 'else', 'moo', 'cows'], NL: { match: /\n/, lineBreaks: true }, }) ``` And now throw some text at it: ```js lexer.reset('while (10) cows\nmoo') lexer.next() // -> { type: 'keyword', value: 'while' } lexer.next() // -> { type: 'WS', value: ' ' } lexer.next() // -> { type: 'lparen', value: '(' } lexer.next() // -> { type: 'number', value: '10' } // ... ``` When you reach the end of Moo's internal buffer, next() will return `undefined`. You can always `reset()` it and feed it more data when that happens. On Regular Expressions ---------------------- RegExps are nifty for making tokenizers, but they can be a bit of a pain. Here are some things to be aware of: * You often want to use **non-greedy quantifiers**: e.g. `*?` instead of `*`. Otherwise your tokens will be longer than you expect: ```js let lexer = moo.compile({ string: /".*"/, // greedy quantifier * // ... }) lexer.reset('"foo" "bar"') lexer.next() // -> { type: 'string', value: 'foo" "bar' } ``` Better: ```js let lexer = moo.compile({ string: /".*?"/, // non-greedy quantifier *? // ... }) lexer.reset('"foo" "bar"') lexer.next() // -> { type: 'string', value: 'foo' } lexer.next() // -> { type: 'space', value: ' ' } lexer.next() // -> { type: 'string', value: 'bar' } ``` * The **order of your rules** matters. Earlier ones will take precedence. ```js moo.compile({ identifier: /[a-z0-9]+/, number: /[0-9]+/, }).reset('42').next() // -> { type: 'identifier', value: '42' } moo.compile({ number: /[0-9]+/, identifier: /[a-z0-9]+/, }).reset('42').next() // -> { type: 'number', value: '42' } ``` * Moo uses **multiline RegExps**. This has a few quirks: for example, the **dot `/./` doesn't include newlines**. Use `[^]` instead if you want to match newlines too. * Since an excluding character ranges like `/[^ ]/` (which matches anything but a space) _will_ include newlines, you have to be careful not to include them by accident! In particular, the whitespace metacharacter `\s` includes newlines. Line Numbers ------------ Moo tracks detailed information about the input for you. It will track line numbers, as long as you **apply the `lineBreaks: true` option to any rules which might contain newlines**. Moo will try to warn you if you forget to do this. Note that this is `false` by default, for performance reasons: counting the number of lines in a matched token has a small cost. For optimal performance, only match newlines inside a dedicated token: ```js newline: {match: '\n', lineBreaks: true}, ``` ### Token Info ### Token objects (returned from `next()`) have the following attributes: * **`type`**: the name of the group, as passed to compile. * **`text`**: the string that was matched. * **`value`**: the string that was matched, transformed by your `value` function (if any). * **`offset`**: the number of bytes from the start of the buffer where the match starts. * **`lineBreaks`**: the number of line breaks found in the match. (Always zero if this rule has `lineBreaks: false`.) * **`line`**: the line number of the beginning of the match, starting from 1. * **`col`**: the column where the match begins, starting from 1. ### Value vs. Text ### The `value` is the same as the `text`, unless you provide a [value transform](#transform). ```js const moo = require('moo') const lexer = moo.compile({ ws: /[ \t]+/, string: {match: /"(?:\\["\\]|[^\n"\\])*"/, value: s => s.slice(1, -1)}, }) lexer.reset('"test"') lexer.next() /* { value: 'test', text: '"test"', ... } */ ``` ### Reset ### Calling `reset()` on your lexer will empty its internal buffer, and set the line, column, and offset counts back to their initial value. If you don't want this, you can `save()` the state, and later pass it as the second argument to `reset()` to explicitly control the internal state of the lexer. ```js    lexer.reset('some line\n') let info = lexer.save() // -> { line: 10 } lexer.next() // -> { line: 10 } lexer.next() // -> { line: 11 } // ... lexer.reset('a different line\n', info) lexer.next() // -> { line: 10 } ``` Keywords -------- Moo makes it convenient to define literals. ```js moo.compile({ lparen: '(', rparen: ')', keyword: ['while', 'if', 'else', 'moo', 'cows'], }) ``` It'll automatically compile them into regular expressions, escaping them where necessary. **Keywords** should be written using the `keywords` transform. ```js moo.compile({ IDEN: {match: /[a-zA-Z]+/, type: moo.keywords({ KW: ['while', 'if', 'else', 'moo', 'cows'], })}, SPACE: {match: /\s+/, lineBreaks: true}, }) ``` ### Why? ### You need to do this to ensure the **longest match** principle applies, even in edge cases. Imagine trying to parse the input `className` with the following rules: ```js keyword: ['class'], identifier: /[a-zA-Z]+/, ``` You'll get _two_ tokens — `['class', 'Name']` -- which is _not_ what you want! If you swap the order of the rules, you'll fix this example; but now you'll lex `class` wrong (as an `identifier`). The keywords helper checks matches against the list of keywords; if any of them match, it uses the type `'keyword'` instead of `'identifier'` (for this example). ### Keyword Types ### Keywords can also have **individual types**. ```js let lexer = moo.compile({ name: {match: /[a-zA-Z]+/, type: moo.keywords({ 'kw-class': 'class', 'kw-def': 'def', 'kw-if': 'if', })}, // ... }) lexer.reset('def foo') lexer.next() // -> { type: 'kw-def', value: 'def' } lexer.next() // space lexer.next() // -> { type: 'name', value: 'foo' } ``` You can use [itt](https://github.com/nathan/itt)'s iterator adapters to make constructing keyword objects easier: ```js itt(['class', 'def', 'if']) .map(k => ['kw-' + k, k]) .toObject() ``` States ------ Moo allows you to define multiple lexer **states**. Each state defines its own separate set of token rules. Your lexer will start off in the first state given to `moo.states({})`. Rules can be annotated with `next`, `push`, and `pop`, to change the current state after that token is matched. A "stack" of past states is kept, which is used by `push` and `pop`. * **`next: 'bar'`** moves to the state named `bar`. (The stack is not changed.) * **`push: 'bar'`** moves to the state named `bar`, and pushes the old state onto the stack. * **`pop: 1`** removes one state from the top of the stack, and moves to that state. (Only `1` is supported.) Only rules from the current state can be matched. You need to copy your rule into all the states you want it to be matched in. For example, to tokenize JS-style string interpolation such as `a${{c: d}}e`, you might use: ```js let lexer = moo.states({ main: { strstart: {match: '`', push: 'lit'}, ident: /\w+/, lbrace: {match: '{', push: 'main'}, rbrace: {match: '}', pop: true}, colon: ':', space: {match: /\s+/, lineBreaks: true}, }, lit: { interp: {match: '${', push: 'main'}, escape: /\\./, strend: {match: '`', pop: true}, const: {match: /(?:[^$`]|\$(?!\{))+/, lineBreaks: true}, }, }) // <= `a${{c: d}}e` // => strstart const interp lbrace ident colon space ident rbrace rbrace const strend ``` The `rbrace` rule is annotated with `pop`, so it moves from the `main` state into either `lit` or `main`, depending on the stack. Errors ------ If none of your rules match, Moo will throw an Error; since it doesn't know what else to do. If you prefer, you can have moo return an error token instead of throwing an exception. The error token will contain the whole of the rest of the buffer. ```js moo.compile({ // ... myError: moo.error, }) moo.reset('invalid') moo.next() // -> { type: 'myError', value: 'invalid', text: 'invalid', offset: 0, lineBreaks: 0, line: 1, col: 1 } moo.next() // -> undefined ``` You can have a token type that both matches tokens _and_ contains error values. ```js moo.compile({ // ... myError: {match: /[\$?`]/, error: true}, }) ``` ### Formatting errors ### If you want to throw an error from your parser, you might find `formatError` helpful. Call it with the offending token: ```js throw new Error(lexer.formatError(token, "invalid syntax")) ``` It returns a string with a pretty error message. ``` Error: invalid syntax at line 2 col 15: totally valid `syntax` ^ ``` Iteration --------- Iterators: we got 'em. ```js for (let here of lexer) { // here = { type: 'number', value: '123', ... } } ``` Create an array of tokens. ```js let tokens = Array.from(lexer); ``` Use [itt](https://github.com/nathan/itt)'s iteration tools with Moo. ```js for (let [here, next] = itt(lexer).lookahead()) { // pass a number if you need more tokens // enjoy! } ``` Transform --------- Moo doesn't allow capturing groups, but you can supply a transform function, `value()`, which will be called on the value before storing it in the Token object. ```js moo.compile({ STRING: [ {match: /"""[^]*?"""/, lineBreaks: true, value: x => x.slice(3, -3)}, {match: /"(?:\\["\\rn]|[^"\\])*?"/, lineBreaks: true, value: x => x.slice(1, -1)}, {match: /'(?:\\['\\rn]|[^'\\])*?'/, lineBreaks: true, value: x => x.slice(1, -1)}, ], // ... }) ``` Contributing ------------ Do check the [FAQ](https://github.com/tjvr/moo/issues?q=label%3Aquestion). Before submitting an issue, [remember...](https://github.com/tjvr/moo/blob/master/.github/CONTRIBUTING.md) binaryen.js =========== **binaryen.js** is a port of [Binaryen](https://github.com/WebAssembly/binaryen) to the Web, allowing you to generate [WebAssembly](https://webassembly.org) using a JavaScript API. <a href="https://github.com/AssemblyScript/binaryen.js/actions?query=workflow%3ABuild"><img src="https://img.shields.io/github/workflow/status/AssemblyScript/binaryen.js/Build/master?label=build&logo=github" alt="Build status" /></a> <a href="https://www.npmjs.com/package/binaryen"><img src="https://img.shields.io/npm/v/binaryen.svg?label=latest&color=007acc&logo=npm" alt="npm version" /></a> <a href="https://www.npmjs.com/package/binaryen"><img src="https://img.shields.io/npm/v/binaryen/nightly.svg?label=nightly&color=007acc&logo=npm" alt="npm nightly version" /></a> Usage ----- ``` $> npm install binaryen ``` ```js var binaryen = require("binaryen"); // Create a module with a single function var myModule = new binaryen.Module(); myModule.addFunction("add", binaryen.createType([ binaryen.i32, binaryen.i32 ]), binaryen.i32, [ binaryen.i32 ], myModule.block(null, [ myModule.local.set(2, myModule.i32.add( myModule.local.get(0, binaryen.i32), myModule.local.get(1, binaryen.i32) ) ), myModule.return( myModule.local.get(2, binaryen.i32) ) ]) ); myModule.addFunctionExport("add", "add"); // Optimize the module using default passes and levels myModule.optimize(); // Validate the module if (!myModule.validate()) throw new Error("validation error"); // Generate text format and binary var textData = myModule.emitText(); var wasmData = myModule.emitBinary(); // Example usage with the WebAssembly API var compiled = new WebAssembly.Module(wasmData); var instance = new WebAssembly.Instance(compiled, {}); console.log(instance.exports.add(41, 1)); ``` The buildbot also publishes nightly versions once a day if there have been changes. The latest nightly can be installed through ``` $> npm install binaryen@nightly ``` or you can use one of the [previous versions](https://github.com/AssemblyScript/binaryen.js/tags) instead if necessary. ### Usage with a CDN * From GitHub via [jsDelivr](https://www.jsdelivr.com):<br /> `https://cdn.jsdelivr.net/gh/AssemblyScript/binaryen.js@VERSION/index.js` * From npm via [jsDelivr](https://www.jsdelivr.com):<br /> `https://cdn.jsdelivr.net/npm/binaryen@VERSION/index.js` * From npm via [unpkg](https://unpkg.com):<br /> `https://unpkg.com/binaryen@VERSION/index.js` Replace `VERSION` with a [specific version](https://github.com/AssemblyScript/binaryen.js/releases) or omit it (not recommended in production) to use master/latest. API --- **Please note** that the Binaryen API is evolving fast and that definitions and documentation provided by the package tend to get out of sync despite our best efforts. It's a bot after all. If you rely on binaryen.js and spot an issue, please consider sending a PR our way by updating [index.d.ts](./index.d.ts) and [README.md](./README.md) to reflect the [current API](https://github.com/WebAssembly/binaryen/blob/master/src/js/binaryen.js-post.js). <!-- START doctoc generated TOC please keep comment here to allow auto update --> <!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE --> ### Contents - [Types](#types) - [Module construction](#module-construction) - [Module manipulation](#module-manipulation) - [Module validation](#module-validation) - [Module optimization](#module-optimization) - [Module creation](#module-creation) - [Expression construction](#expression-construction) - [Control flow](#control-flow) - [Variable accesses](#variable-accesses) - [Integer operations](#integer-operations) - [Floating point operations](#floating-point-operations) - [Datatype conversions](#datatype-conversions) - [Function calls](#function-calls) - [Linear memory accesses](#linear-memory-accesses) - [Host operations](#host-operations) - [Vector operations 🦄](#vector-operations-) - [Atomic memory accesses 🦄](#atomic-memory-accesses-) - [Atomic read-modify-write operations 🦄](#atomic-read-modify-write-operations-) - [Atomic wait and notify operations 🦄](#atomic-wait-and-notify-operations-) - [Sign extension operations 🦄](#sign-extension-operations-) - [Multi-value operations 🦄](#multi-value-operations-) - [Exception handling operations 🦄](#exception-handling-operations-) - [Reference types operations 🦄](#reference-types-operations-) - [Expression manipulation](#expression-manipulation) - [Relooper](#relooper) - [Source maps](#source-maps) - [Debugging](#debugging) <!-- END doctoc generated TOC please keep comment here to allow auto update --> [Future features](http://webassembly.org/docs/future-features/) 🦄 might not be supported by all runtimes. ### Types * **none**: `Type`<br /> The none type, e.g., `void`. * **i32**: `Type`<br /> 32-bit integer type. * **i64**: `Type`<br /> 64-bit integer type. * **f32**: `Type`<br /> 32-bit float type. * **f64**: `Type`<br /> 64-bit float (double) type. * **v128**: `Type`<br /> 128-bit vector type. 🦄 * **funcref**: `Type`<br /> A function reference. 🦄 * **anyref**: `Type`<br /> Any host reference. 🦄 * **nullref**: `Type`<br /> A null reference. 🦄 * **exnref**: `Type`<br /> An exception reference. 🦄 * **unreachable**: `Type`<br /> Special type indicating unreachable code when obtaining information about an expression. * **auto**: `Type`<br /> Special type used in **Module#block** exclusively. Lets the API figure out a block's result type automatically. * **createType**(types: `Type[]`): `Type`<br /> Creates a multi-value type from an array of types. * **expandType**(type: `Type`): `Type[]`<br /> Expands a multi-value type to an array of types. ### Module construction * new **Module**()<br /> Constructs a new module. * **parseText**(text: `string`): `Module`<br /> Creates a module from Binaryen's s-expression text format (not official stack-style text format). * **readBinary**(data: `Uint8Array`): `Module`<br /> Creates a module from binary data. ### Module manipulation * Module#**addFunction**(name: `string`, params: `Type`, results: `Type`, vars: `Type[]`, body: `ExpressionRef`): `FunctionRef`<br /> Adds a function. `vars` indicate additional locals, in the given order. * Module#**getFunction**(name: `string`): `FunctionRef`<br /> Gets a function, by name, * Module#**removeFunction**(name: `string`): `void`<br /> Removes a function, by name. * Module#**getNumFunctions**(): `number`<br /> Gets the number of functions within the module. * Module#**getFunctionByIndex**(index: `number`): `FunctionRef`<br /> Gets the function at the specified index. * Module#**addFunctionImport**(internalName: `string`, externalModuleName: `string`, externalBaseName: `string`, params: `Type`, results: `Type`): `void`<br /> Adds a function import. * Module#**addTableImport**(internalName: `string`, externalModuleName: `string`, externalBaseName: `string`): `void`<br /> Adds a table import. There's just one table for now, using name `"0"`. * Module#**addMemoryImport**(internalName: `string`, externalModuleName: `string`, externalBaseName: `string`): `void`<br /> Adds a memory import. There's just one memory for now, using name `"0"`. * Module#**addGlobalImport**(internalName: `string`, externalModuleName: `string`, externalBaseName: `string`, globalType: `Type`): `void`<br /> Adds a global variable import. Imported globals must be immutable. * Module#**addFunctionExport**(internalName: `string`, externalName: `string`): `ExportRef`<br /> Adds a function export. * Module#**addTableExport**(internalName: `string`, externalName: `string`): `ExportRef`<br /> Adds a table export. There's just one table for now, using name `"0"`. * Module#**addMemoryExport**(internalName: `string`, externalName: `string`): `ExportRef`<br /> Adds a memory export. There's just one memory for now, using name `"0"`. * Module#**addGlobalExport**(internalName: `string`, externalName: `string`): `ExportRef`<br /> Adds a global variable export. Exported globals must be immutable. * Module#**getNumExports**(): `number`<br /> Gets the number of exports witin the module. * Module#**getExportByIndex**(index: `number`): `ExportRef`<br /> Gets the export at the specified index. * Module#**removeExport**(externalName: `string`): `void`<br /> Removes an export, by external name. * Module#**addGlobal**(name: `string`, type: `Type`, mutable: `number`, value: `ExpressionRef`): `GlobalRef`<br /> Adds a global instance variable. * Module#**getGlobal**(name: `string`): `GlobalRef`<br /> Gets a global, by name, * Module#**removeGlobal**(name: `string`): `void`<br /> Removes a global, by name. * Module#**setFunctionTable**(initial: `number`, maximum: `number`, funcs: `string[]`, offset?: `ExpressionRef`): `void`<br /> Sets the contents of the function table. There's just one table for now, using name `"0"`. * Module#**getFunctionTable**(): `{ imported: boolean, segments: TableElement[] }`<br /> Gets the contents of the function table. * TableElement#**offset**: `ExpressionRef` * TableElement#**names**: `string[]` * Module#**setMemory**(initial: `number`, maximum: `number`, exportName: `string | null`, segments: `MemorySegment[]`, flags?: `number[]`, shared?: `boolean`): `void`<br /> Sets the memory. There's just one memory for now, using name `"0"`. Providing `exportName` also creates a memory export. * MemorySegment#**offset**: `ExpressionRef` * MemorySegment#**data**: `Uint8Array` * MemorySegment#**passive**: `boolean` * Module#**getNumMemorySegments**(): `number`<br /> Gets the number of memory segments within the module. * Module#**getMemorySegmentInfoByIndex**(index: `number`): `MemorySegmentInfo`<br /> Gets information about the memory segment at the specified index. * MemorySegmentInfo#**offset**: `number` * MemorySegmentInfo#**data**: `Uint8Array` * MemorySegmentInfo#**passive**: `boolean` * Module#**setStart**(start: `FunctionRef`): `void`<br /> Sets the start function. * Module#**getFeatures**(): `Features`<br /> Gets the WebAssembly features enabled for this module. Note that the return value may be a bitmask indicating multiple features. Possible feature flags are: * Features.**MVP**: `Features` * Features.**Atomics**: `Features` * Features.**BulkMemory**: `Features` * Features.**MutableGlobals**: `Features` * Features.**NontrappingFPToInt**: `Features` * Features.**SignExt**: `Features` * Features.**SIMD128**: `Features` * Features.**ExceptionHandling**: `Features` * Features.**TailCall**: `Features` * Features.**ReferenceTypes**: `Features` * Features.**Multivalue**: `Features` * Features.**All**: `Features` * Module#**setFeatures**(features: `Features`): `void`<br /> Sets the WebAssembly features enabled for this module. * Module#**addCustomSection**(name: `string`, contents: `Uint8Array`): `void`<br /> Adds a custom section to the binary. * Module#**autoDrop**(): `void`<br /> Enables automatic insertion of `drop` operations where needed. Lets you not worry about dropping when creating your code. * **getFunctionInfo**(ftype: `FunctionRef`: `FunctionInfo`<br /> Obtains information about a function. * FunctionInfo#**name**: `string` * FunctionInfo#**module**: `string | null` (if imported) * FunctionInfo#**base**: `string | null` (if imported) * FunctionInfo#**params**: `Type` * FunctionInfo#**results**: `Type` * FunctionInfo#**vars**: `Type` * FunctionInfo#**body**: `ExpressionRef` * **getGlobalInfo**(global: `GlobalRef`): `GlobalInfo`<br /> Obtains information about a global. * GlobalInfo#**name**: `string` * GlobalInfo#**module**: `string | null` (if imported) * GlobalInfo#**base**: `string | null` (if imported) * GlobalInfo#**type**: `Type` * GlobalInfo#**mutable**: `boolean` * GlobalInfo#**init**: `ExpressionRef` * **getExportInfo**(export_: `ExportRef`): `ExportInfo`<br /> Obtains information about an export. * ExportInfo#**kind**: `ExternalKind` * ExportInfo#**name**: `string` * ExportInfo#**value**: `string` Possible `ExternalKind` values are: * **ExternalFunction**: `ExternalKind` * **ExternalTable**: `ExternalKind` * **ExternalMemory**: `ExternalKind` * **ExternalGlobal**: `ExternalKind` * **ExternalEvent**: `ExternalKind` * **getEventInfo**(event: `EventRef`): `EventInfo`<br /> Obtains information about an event. * EventInfo#**name**: `string` * EventInfo#**module**: `string | null` (if imported) * EventInfo#**base**: `string | null` (if imported) * EventInfo#**attribute**: `number` * EventInfo#**params**: `Type` * EventInfo#**results**: `Type` * **getSideEffects**(expr: `ExpressionRef`, features: `FeatureFlags`): `SideEffects`<br /> Gets the side effects of the specified expression. * SideEffects.**None**: `SideEffects` * SideEffects.**Branches**: `SideEffects` * SideEffects.**Calls**: `SideEffects` * SideEffects.**ReadsLocal**: `SideEffects` * SideEffects.**WritesLocal**: `SideEffects` * SideEffects.**ReadsGlobal**: `SideEffects` * SideEffects.**WritesGlobal**: `SideEffects` * SideEffects.**ReadsMemory**: `SideEffects` * SideEffects.**WritesMemory**: `SideEffects` * SideEffects.**ImplicitTrap**: `SideEffects` * SideEffects.**IsAtomic**: `SideEffects` * SideEffects.**Throws**: `SideEffects` * SideEffects.**Any**: `SideEffects` ### Module validation * Module#**validate**(): `boolean`<br /> Validates the module. Returns `true` if valid, otherwise prints validation errors and returns `false`. ### Module optimization * Module#**optimize**(): `void`<br /> Optimizes the module using the default optimization passes. * Module#**optimizeFunction**(func: `FunctionRef | string`): `void`<br /> Optimizes a single function using the default optimization passes. * Module#**runPasses**(passes: `string[]`): `void`<br /> Runs the specified passes on the module. * Module#**runPassesOnFunction**(func: `FunctionRef | string`, passes: `string[]`): `void`<br /> Runs the specified passes on a single function. * **getOptimizeLevel**(): `number`<br /> Gets the currently set optimize level. `0`, `1`, `2` correspond to `-O0`, `-O1`, `-O2` (default), etc. * **setOptimizeLevel**(level: `number`): `void`<br /> Sets the optimization level to use. `0`, `1`, `2` correspond to `-O0`, `-O1`, `-O2` (default), etc. * **getShrinkLevel**(): `number`<br /> Gets the currently set shrink level. `0`, `1`, `2` correspond to `-O0`, `-Os` (default), `-Oz`. * **setShrinkLevel**(level: `number`): `void`<br /> Sets the shrink level to use. `0`, `1`, `2` correspond to `-O0`, `-Os` (default), `-Oz`. * **getDebugInfo**(): `boolean`<br /> Gets whether generating debug information is currently enabled or not. * **setDebugInfo**(on: `boolean`): `void`<br /> Enables or disables debug information in emitted binaries. * **getLowMemoryUnused**(): `boolean`<br /> Gets whether the low 1K of memory can be considered unused when optimizing. * **setLowMemoryUnused**(on: `boolean`): `void`<br /> Enables or disables whether the low 1K of memory can be considered unused when optimizing. * **getPassArgument**(key: `string`): `string | null`<br /> Gets the value of the specified arbitrary pass argument. * **setPassArgument**(key: `string`, value: `string | null`): `void`<br /> Sets the value of the specified arbitrary pass argument. Removes the respective argument if `value` is `null`. * **clearPassArguments**(): `void`<br /> Clears all arbitrary pass arguments. * **getAlwaysInlineMaxSize**(): `number`<br /> Gets the function size at which we always inline. * **setAlwaysInlineMaxSize**(size: `number`): `void`<br /> Sets the function size at which we always inline. * **getFlexibleInlineMaxSize**(): `number`<br /> Gets the function size which we inline when functions are lightweight. * **setFlexibleInlineMaxSize**(size: `number`): `void`<br /> Sets the function size which we inline when functions are lightweight. * **getOneCallerInlineMaxSize**(): `number`<br /> Gets the function size which we inline when there is only one caller. * **setOneCallerInlineMaxSize**(size: `number`): `void`<br /> Sets the function size which we inline when there is only one caller. ### Module creation * Module#**emitBinary**(): `Uint8Array`<br /> Returns the module in binary format. * Module#**emitBinary**(sourceMapUrl: `string | null`): `BinaryWithSourceMap`<br /> Returns the module in binary format with its source map. If `sourceMapUrl` is `null`, source map generation is skipped. * BinaryWithSourceMap#**binary**: `Uint8Array` * BinaryWithSourceMap#**sourceMap**: `string | null` * Module#**emitText**(): `string`<br /> Returns the module in Binaryen's s-expression text format (not official stack-style text format). * Module#**emitAsmjs**(): `string`<br /> Returns the [asm.js](http://asmjs.org/) representation of the module. * Module#**dispose**(): `void`<br /> Releases the resources held by the module once it isn't needed anymore. ### Expression construction #### [Control flow](http://webassembly.org/docs/semantics/#control-constructs-and-instructions) * Module#**block**(label: `string | null`, children: `ExpressionRef[]`, resultType?: `Type`): `ExpressionRef`<br /> Creates a block. `resultType` defaults to `none`. * Module#**if**(condition: `ExpressionRef`, ifTrue: `ExpressionRef`, ifFalse?: `ExpressionRef`): `ExpressionRef`<br /> Creates an if or if/else combination. * Module#**loop**(label: `string | null`, body: `ExpressionRef`): `ExpressionRef`<br /> Creates a loop. * Module#**br**(label: `string`, condition?: `ExpressionRef`, value?: `ExpressionRef`): `ExpressionRef`<br /> Creates a branch (br) to a label. * Module#**switch**(labels: `string[]`, defaultLabel: `string`, condition: `ExpressionRef`, value?: `ExpressionRef`): `ExpressionRef`<br /> Creates a switch (br_table). * Module#**nop**(): `ExpressionRef`<br /> Creates a no-operation (nop) instruction. * Module#**return**(value?: `ExpressionRef`): `ExpressionRef` Creates a return. * Module#**unreachable**(): `ExpressionRef`<br /> Creates an [unreachable](http://webassembly.org/docs/semantics/#unreachable) instruction that will always trap. * Module#**drop**(value: `ExpressionRef`): `ExpressionRef`<br /> Creates a [drop](http://webassembly.org/docs/semantics/#type-parametric-operators) of a value. * Module#**select**(condition: `ExpressionRef`, ifTrue: `ExpressionRef`, ifFalse: `ExpressionRef`, type?: `Type`): `ExpressionRef`<br /> Creates a [select](http://webassembly.org/docs/semantics/#type-parametric-operators) of one of two values. #### [Variable accesses](http://webassembly.org/docs/semantics/#local-variables) * Module#**local.get**(index: `number`, type: `Type`): `ExpressionRef`<br /> Creates a local.get for the local at the specified index. Note that we must specify the type here as we may not have created the local being accessed yet. * Module#**local.set**(index: `number`, value: `ExpressionRef`): `ExpressionRef`<br /> Creates a local.set for the local at the specified index. * Module#**local.tee**(index: `number`, value: `ExpressionRef`, type: `Type`): `ExpressionRef`<br /> Creates a local.tee for the local at the specified index. A tee differs from a set in that the value remains on the stack. Note that we must specify the type here as we may not have created the local being accessed yet. * Module#**global.get**(name: `string`, type: `Type`): `ExpressionRef`<br /> Creates a global.get for the global with the specified name. Note that we must specify the type here as we may not have created the global being accessed yet. * Module#**global.set**(name: `string`, value: `ExpressionRef`): `ExpressionRef`<br /> Creates a global.set for the global with the specified name. #### [Integer operations](http://webassembly.org/docs/semantics/#32-bit-integer-operators) * Module#i32.**const**(value: `number`): `ExpressionRef` * Module#i32.**clz**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**ctz**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**popcnt**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**eqz**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**div_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**div_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**rem_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**rem_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**and**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**or**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**xor**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**shl**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**shr_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**shr_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**rotl**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**rotr**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**lt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**le_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**le_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**gt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**gt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**ge_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**ge_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` > * Module#i64.**const**(low: `number`, high: `number`): `ExpressionRef` * Module#i64.**clz**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**ctz**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**popcnt**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**eqz**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**div_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**div_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**rem_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**rem_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**and**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**or**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**xor**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**shl**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**shr_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**shr_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**rotl**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**rotr**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**lt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**le_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**le_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**gt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**gt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**ge_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**ge_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` #### [Floating point operations](http://webassembly.org/docs/semantics/#floating-point-operators) * Module#f32.**const**(value: `number`): `ExpressionRef` * Module#f32.**const_bits**(value: `number`): `ExpressionRef` * Module#f32.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**abs**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**ceil**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**floor**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**trunc**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**nearest**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**sqrt**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**div**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**copysign**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**min**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**max**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**lt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**le**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**gt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**ge**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` > * Module#f64.**const**(value: `number`): `ExpressionRef` * Module#f64.**const_bits**(value: `number`): `ExpressionRef` * Module#f64.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**abs**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**ceil**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**floor**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**trunc**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**nearest**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**sqrt**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**div**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**copysign**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**min**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**max**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**lt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**le**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**gt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**ge**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` #### [Datatype conversions](http://webassembly.org/docs/semantics/#datatype-conversions-truncations-reinterpretations-promotions-and-demotions) * Module#i32.**trunc_s.f32**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**trunc_s.f64**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**trunc_u.f32**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**trunc_u.f64**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**reinterpret**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**wrap**(value: `ExpressionRef`): `ExpressionRef` > * Module#i64.**trunc_s.f32**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**trunc_s.f64**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**trunc_u.f32**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**trunc_u.f64**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**reinterpret**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**extend_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**extend_u**(value: `ExpressionRef`): `ExpressionRef` > * Module#f32.**reinterpret**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**convert_s.i32**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**convert_s.i64**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**convert_u.i32**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**convert_u.i64**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**demote**(value: `ExpressionRef`): `ExpressionRef` > * Module#f64.**reinterpret**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**convert_s.i32**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**convert_s.i64**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**convert_u.i32**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**convert_u.i64**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**promote**(value: `ExpressionRef`): `ExpressionRef` #### [Function calls](http://webassembly.org/docs/semantics/#calls) * Module#**call**(name: `string`, operands: `ExpressionRef[]`, returnType: `Type`): `ExpressionRef` Creates a call to a function. Note that we must specify the return type here as we may not have created the function being called yet. * Module#**return_call**(name: `string`, operands: `ExpressionRef[]`, returnType: `Type`): `ExpressionRef`<br /> Like **call**, but creates a tail-call. 🦄 * Module#**call_indirect**(target: `ExpressionRef`, operands: `ExpressionRef[]`, params: `Type`, results: `Type`): `ExpressionRef`<br /> Similar to **call**, but calls indirectly, i.e., via a function pointer, so an expression replaces the name as the called value. * Module#**return_call_indirect**(target: `ExpressionRef`, operands: `ExpressionRef[]`, params: `Type`, results: `Type`): `ExpressionRef`<br /> Like **call_indirect**, but creates a tail-call. 🦄 #### [Linear memory accesses](http://webassembly.org/docs/semantics/#linear-memory-accesses) * Module#i32.**load**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**load8_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**load8_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**load16_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**load16_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**store**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**store8**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**store16**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef`<br /> > * Module#i64.**load**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load8_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load8_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load16_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load16_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load32_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load32_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**store**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**store8**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**store16**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**store32**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` > * Module#f32.**load**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#f32.**store**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` > * Module#f64.**load**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#f64.**store**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` #### [Host operations](http://webassembly.org/docs/semantics/#resizing) * Module#**memory.size**(): `ExpressionRef` * Module#**memory.grow**(value: `number`): `ExpressionRef` #### [Vector operations](https://github.com/WebAssembly/simd/blob/master/proposals/simd/SIMD.md) 🦄 * Module#v128.**const**(bytes: `Uint8Array`): `ExpressionRef` * Module#v128.**load**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#v128.**store**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#v128.**not**(value: `ExpressionRef`): `ExpressionRef` * Module#v128.**and**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#v128.**or**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#v128.**xor**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#v128.**andnot**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#v128.**bitselect**(left: `ExpressionRef`, right: `ExpressionRef`, cond: `ExpressionRef`): `ExpressionRef` > * Module#i8x16.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**extract_lane_s**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i8x16.**extract_lane_u**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i8x16.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**lt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**gt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**gt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**le_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**ge_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**ge_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**any_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**all_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**shl**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**shr_s**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**shr_u**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**add_saturate_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**add_saturate_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**sub_saturate_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**sub_saturate_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**min_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**min_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**max_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**max_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**avgr_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**narrow_i16x8_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**narrow_i16x8_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` > * Module#i16x8.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**extract_lane_s**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i16x8.**extract_lane_u**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i16x8.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**lt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**gt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**gt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**le_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**ge_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**ge_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**any_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**all_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**shl**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**shr_s**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**shr_u**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**add_saturate_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**add_saturate_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**sub_saturate_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**sub_saturate_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**min_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**min_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**max_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**max_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**avgr_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**narrow_i32x4_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**narrow_i32x4_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**widen_low_i8x16_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**widen_high_i8x16_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**widen_low_i8x16_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**widen_high_i8x16_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**load8x8_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**load8x8_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#i32x4.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**extract_lane_s**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i32x4.**extract_lane_u**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i32x4.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**lt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**gt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**gt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**le_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**ge_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**ge_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**any_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**all_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**shl**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**shr_s**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**shr_u**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**min_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**min_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**max_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**max_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**dot_i16x8_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**trunc_sat_f32x4_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**trunc_sat_f32x4_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**widen_low_i16x8_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**widen_high_i16x8_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**widen_low_i16x8_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**widen_high_i16x8_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**load16x4_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**load16x4_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#i64x2.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**extract_lane_s**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i64x2.**extract_lane_u**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i64x2.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**any_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**all_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**shl**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**shr_s**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**shr_u**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**trunc_sat_f64x2_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**trunc_sat_f64x2_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**load32x2_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**load32x2_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#f32x4.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**extract_lane**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#f32x4.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**lt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**gt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**le**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**ge**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**abs**(value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**sqrt**(value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**qfma**(a: `ExpressionRef`, b: `ExpressionRef`, c: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**qfms**(a: `ExpressionRef`, b: `ExpressionRef`, c: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**div**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**min**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**max**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**convert_i32x4_s**(value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**convert_i32x4_u**(value: `ExpressionRef`): `ExpressionRef` > * Module#f64x2.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**extract_lane**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#f64x2.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**lt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**gt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**le**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**ge**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**abs**(value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**sqrt**(value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**qfma**(a: `ExpressionRef`, b: `ExpressionRef`, c: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**qfms**(a: `ExpressionRef`, b: `ExpressionRef`, c: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**div**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**min**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**max**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**convert_i64x2_s**(value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**convert_i64x2_u**(value: `ExpressionRef`): `ExpressionRef` > * Module#v8x16.**shuffle**(left: `ExpressionRef`, right: `ExpressionRef`, mask: `Uint8Array`): `ExpressionRef` * Module#v8x16.**swizzle**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#v8x16.**load_splat**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#v16x8.**load_splat**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#v32x4.**load_splat**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#v64x2.**load_splat**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` #### [Atomic memory accesses](https://github.com/WebAssembly/threads/blob/master/proposals/threads/Overview.md#atomic-memory-accesses) 🦄 * Module#i32.**atomic.load**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.load8_u**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.load16_u**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.store**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.store8**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.store16**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` > * Module#i64.**atomic.load**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.load8_u**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.load16_u**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.load32_u**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.store**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.store8**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.store16**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.store32**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` #### [Atomic read-modify-write operations](https://github.com/WebAssembly/threads/blob/master/proposals/threads/Overview.md#read-modify-write) 🦄 * Module#i32.**atomic.rmw.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` > * Module#i64.**atomic.rmw.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` #### [Atomic wait and notify operations](https://github.com/WebAssembly/threads/blob/master/proposals/threads/Overview.md#wait-and-notify-operators) 🦄 * Module#i32.**atomic.wait**(ptr: `ExpressionRef`, expected: `ExpressionRef`, timeout: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.wait**(ptr: `ExpressionRef`, expected: `ExpressionRef`, timeout: `ExpressionRef`): `ExpressionRef` * Module#**atomic.notify**(ptr: `ExpressionRef`, notifyCount: `ExpressionRef`): `ExpressionRef` * Module#**atomic.fence**(): `ExpressionRef` #### [Sign extension operations](https://github.com/WebAssembly/sign-extension-ops/blob/master/proposals/sign-extension-ops/Overview.md) 🦄 * Module#i32.**extend8_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**extend16_s**(value: `ExpressionRef`): `ExpressionRef` > * Module#i64.**extend8_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**extend16_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**extend32_s**(value: `ExpressionRef`): `ExpressionRef` #### [Multi-value operations](https://github.com/WebAssembly/multi-value/blob/master/proposals/multi-value/Overview.md) 🦄 Note that these are pseudo instructions enabling Binaryen to reason about multiple values on the stack. * Module#**push**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**pop**(): `ExpressionRef` * Module#i64.**pop**(): `ExpressionRef` * Module#f32.**pop**(): `ExpressionRef` * Module#f64.**pop**(): `ExpressionRef` * Module#v128.**pop**(): `ExpressionRef` * Module#funcref.**pop**(): `ExpressionRef` * Module#anyref.**pop**(): `ExpressionRef` * Module#nullref.**pop**(): `ExpressionRef` * Module#exnref.**pop**(): `ExpressionRef` * Module#tuple.**make**(elements: `ExpressionRef[]`): `ExpressionRef` * Module#tuple.**extract**(tuple: `ExpressionRef`, index: `number`): `ExpressionRef` #### [Exception handling operations](https://github.com/WebAssembly/exception-handling/blob/master/proposals/Exceptions.md) 🦄 * Module#**try**(body: `ExpressionRef`, catchBody: `ExpressionRef`): `ExpressionRef` * Module#**throw**(event: `string`, operands: `ExpressionRef[]`): `ExpressionRef` * Module#**rethrow**(exnref: `ExpressionRef`): `ExpressionRef` * Module#**br_on_exn**(label: `string`, event: `string`, exnref: `ExpressionRef`): `ExpressionRef` > * Module#**addEvent**(name: `string`, attribute: `number`, params: `Type`, results: `Type`): `Event` * Module#**getEvent**(name: `string`): `Event` * Module#**removeEvent**(name: `stirng`): `void` * Module#**addEventImport**(internalName: `string`, externalModuleName: `string`, externalBaseName: `string`, attribute: `number`, params: `Type`, results: `Type`): `void` * Module#**addEventExport**(internalName: `string`, externalName: `string`): `ExportRef` #### [Reference types operations](https://github.com/WebAssembly/reference-types/blob/master/proposals/reference-types/Overview.md) 🦄 * Module#ref.**null**(): `ExpressionRef` * Module#ref.**is_null**(value: `ExpressionRef`): `ExpressionRef` * Module#ref.**func**(name: `string`): `ExpressionRef` ### Expression manipulation * **getExpressionId**(expr: `ExpressionRef`): `ExpressionId`<br /> Gets the id (kind) of the specified expression. Possible values are: * **InvalidId**: `ExpressionId` * **BlockId**: `ExpressionId` * **IfId**: `ExpressionId` * **LoopId**: `ExpressionId` * **BreakId**: `ExpressionId` * **SwitchId**: `ExpressionId` * **CallId**: `ExpressionId` * **CallIndirectId**: `ExpressionId` * **LocalGetId**: `ExpressionId` * **LocalSetId**: `ExpressionId` * **GlobalGetId**: `ExpressionId` * **GlobalSetId**: `ExpressionId` * **LoadId**: `ExpressionId` * **StoreId**: `ExpressionId` * **ConstId**: `ExpressionId` * **UnaryId**: `ExpressionId` * **BinaryId**: `ExpressionId` * **SelectId**: `ExpressionId` * **DropId**: `ExpressionId` * **ReturnId**: `ExpressionId` * **HostId**: `ExpressionId` * **NopId**: `ExpressionId` * **UnreachableId**: `ExpressionId` * **AtomicCmpxchgId**: `ExpressionId` * **AtomicRMWId**: `ExpressionId` * **AtomicWaitId**: `ExpressionId` * **AtomicNotifyId**: `ExpressionId` * **AtomicFenceId**: `ExpressionId` * **SIMDExtractId**: `ExpressionId` * **SIMDReplaceId**: `ExpressionId` * **SIMDShuffleId**: `ExpressionId` * **SIMDTernaryId**: `ExpressionId` * **SIMDShiftId**: `ExpressionId` * **SIMDLoadId**: `ExpressionId` * **MemoryInitId**: `ExpressionId` * **DataDropId**: `ExpressionId` * **MemoryCopyId**: `ExpressionId` * **MemoryFillId**: `ExpressionId` * **RefNullId**: `ExpressionId` * **RefIsNullId**: `ExpressionId` * **RefFuncId**: `ExpressionId` * **TryId**: `ExpressionId` * **ThrowId**: `ExpressionId` * **RethrowId**: `ExpressionId` * **BrOnExnId**: `ExpressionId` * **PushId**: `ExpressionId` * **PopId**: `ExpressionId` * **getExpressionType**(expr: `ExpressionRef`): `Type`<br /> Gets the type of the specified expression. * **getExpressionInfo**(expr: `ExpressionRef`): `ExpressionInfo`<br /> Obtains information about an expression, always including: * Info#**id**: `ExpressionId` * Info#**type**: `Type` Additional properties depend on the expression's `id` and are usually equivalent to the respective parameters when creating such an expression: * BlockInfo#**name**: `string` * BlockInfo#**children**: `ExpressionRef[]` > * IfInfo#**condition**: `ExpressionRef` * IfInfo#**ifTrue**: `ExpressionRef` * IfInfo#**ifFalse**: `ExpressionRef | null` > * LoopInfo#**name**: `string` * LoopInfo#**body**: `ExpressionRef` > * BreakInfo#**name**: `string` * BreakInfo#**condition**: `ExpressionRef | null` * BreakInfo#**value**: `ExpressionRef | null` > * SwitchInfo#**names**: `string[]` * SwitchInfo#**defaultName**: `string | null` * SwitchInfo#**condition**: `ExpressionRef` * SwitchInfo#**value**: `ExpressionRef | null` > * CallInfo#**target**: `string` * CallInfo#**operands**: `ExpressionRef[]` > * CallImportInfo#**target**: `string` * CallImportInfo#**operands**: `ExpressionRef[]` > * CallIndirectInfo#**target**: `ExpressionRef` * CallIndirectInfo#**operands**: `ExpressionRef[]` > * LocalGetInfo#**index**: `number` > * LocalSetInfo#**isTee**: `boolean` * LocalSetInfo#**index**: `number` * LocalSetInfo#**value**: `ExpressionRef` > * GlobalGetInfo#**name**: `string` > * GlobalSetInfo#**name**: `string` * GlobalSetInfo#**value**: `ExpressionRef` > * LoadInfo#**isAtomic**: `boolean` * LoadInfo#**isSigned**: `boolean` * LoadInfo#**offset**: `number` * LoadInfo#**bytes**: `number` * LoadInfo#**align**: `number` * LoadInfo#**ptr**: `ExpressionRef` > * StoreInfo#**isAtomic**: `boolean` * StoreInfo#**offset**: `number` * StoreInfo#**bytes**: `number` * StoreInfo#**align**: `number` * StoreInfo#**ptr**: `ExpressionRef` * StoreInfo#**value**: `ExpressionRef` > * ConstInfo#**value**: `number | { low: number, high: number }` > * UnaryInfo#**op**: `number` * UnaryInfo#**value**: `ExpressionRef` > * BinaryInfo#**op**: `number` * BinaryInfo#**left**: `ExpressionRef` * BinaryInfo#**right**: `ExpressionRef` > * SelectInfo#**ifTrue**: `ExpressionRef` * SelectInfo#**ifFalse**: `ExpressionRef` * SelectInfo#**condition**: `ExpressionRef` > * DropInfo#**value**: `ExpressionRef` > * ReturnInfo#**value**: `ExpressionRef | null` > * NopInfo > * UnreachableInfo > * HostInfo#**op**: `number` * HostInfo#**nameOperand**: `string | null` * HostInfo#**operands**: `ExpressionRef[]` > * AtomicRMWInfo#**op**: `number` * AtomicRMWInfo#**bytes**: `number` * AtomicRMWInfo#**offset**: `number` * AtomicRMWInfo#**ptr**: `ExpressionRef` * AtomicRMWInfo#**value**: `ExpressionRef` > * AtomicCmpxchgInfo#**bytes**: `number` * AtomicCmpxchgInfo#**offset**: `number` * AtomicCmpxchgInfo#**ptr**: `ExpressionRef` * AtomicCmpxchgInfo#**expected**: `ExpressionRef` * AtomicCmpxchgInfo#**replacement**: `ExpressionRef` > * AtomicWaitInfo#**ptr**: `ExpressionRef` * AtomicWaitInfo#**expected**: `ExpressionRef` * AtomicWaitInfo#**timeout**: `ExpressionRef` * AtomicWaitInfo#**expectedType**: `Type` > * AtomicNotifyInfo#**ptr**: `ExpressionRef` * AtomicNotifyInfo#**notifyCount**: `ExpressionRef` > * AtomicFenceInfo > * SIMDExtractInfo#**op**: `Op` * SIMDExtractInfo#**vec**: `ExpressionRef` * SIMDExtractInfo#**index**: `ExpressionRef` > * SIMDReplaceInfo#**op**: `Op` * SIMDReplaceInfo#**vec**: `ExpressionRef` * SIMDReplaceInfo#**index**: `ExpressionRef` * SIMDReplaceInfo#**value**: `ExpressionRef` > * SIMDShuffleInfo#**left**: `ExpressionRef` * SIMDShuffleInfo#**right**: `ExpressionRef` * SIMDShuffleInfo#**mask**: `Uint8Array` > * SIMDTernaryInfo#**op**: `Op` * SIMDTernaryInfo#**a**: `ExpressionRef` * SIMDTernaryInfo#**b**: `ExpressionRef` * SIMDTernaryInfo#**c**: `ExpressionRef` > * SIMDShiftInfo#**op**: `Op` * SIMDShiftInfo#**vec**: `ExpressionRef` * SIMDShiftInfo#**shift**: `ExpressionRef` > * SIMDLoadInfo#**op**: `Op` * SIMDLoadInfo#**offset**: `number` * SIMDLoadInfo#**align**: `number` * SIMDLoadInfo#**ptr**: `ExpressionRef` > * MemoryInitInfo#**segment**: `number` * MemoryInitInfo#**dest**: `ExpressionRef` * MemoryInitInfo#**offset**: `ExpressionRef` * MemoryInitInfo#**size**: `ExpressionRef` > * MemoryDropInfo#**segment**: `number` > * MemoryCopyInfo#**dest**: `ExpressionRef` * MemoryCopyInfo#**source**: `ExpressionRef` * MemoryCopyInfo#**size**: `ExpressionRef` > * MemoryFillInfo#**dest**: `ExpressionRef` * MemoryFillInfo#**value**: `ExpressionRef` * MemoryFillInfo#**size**: `ExpressionRef` > * TryInfo#**body**: `ExpressionRef` * TryInfo#**catchBody**: `ExpressionRef` > * RefNullInfo > * RefIsNullInfo#**value**: `ExpressionRef` > * RefFuncInfo#**func**: `string` > * ThrowInfo#**event**: `string` * ThrowInfo#**operands**: `ExpressionRef[]` > * RethrowInfo#**exnref**: `ExpressionRef` > * BrOnExnInfo#**name**: `string` * BrOnExnInfo#**event**: `string` * BrOnExnInfo#**exnref**: `ExpressionRef` > * PopInfo > * PushInfo#**value**: `ExpressionRef` * **emitText**(expression: `ExpressionRef`): `string`<br /> Emits the expression in Binaryen's s-expression text format (not official stack-style text format). * **copyExpression**(expression: `ExpressionRef`): `ExpressionRef`<br /> Creates a deep copy of an expression. ### Relooper * new **Relooper**()<br /> Constructs a relooper instance. This lets you provide an arbitrary CFG, and the relooper will structure it for WebAssembly. * Relooper#**addBlock**(code: `ExpressionRef`): `RelooperBlockRef`<br /> Adds a new block to the CFG, containing the provided code as its body. * Relooper#**addBranch**(from: `RelooperBlockRef`, to: `RelooperBlockRef`, condition: `ExpressionRef`, code: `ExpressionRef`): `void`<br /> Adds a branch from a block to another block, with a condition (or nothing, if this is the default branch to take from the origin - each block must have one such branch), and optional code to execute on the branch (useful for phis). * Relooper#**addBlockWithSwitch**(code: `ExpressionRef`, condition: `ExpressionRef`): `RelooperBlockRef`<br /> Adds a new block, which ends with a switch/br_table, with provided code and condition (that determines where we go in the switch). * Relooper#**addBranchForSwitch**(from: `RelooperBlockRef`, to: `RelooperBlockRef`, indexes: `number[]`, code: `ExpressionRef`): `void`<br /> Adds a branch from a block ending in a switch, to another block, using an array of indexes that determine where to go, and optional code to execute on the branch. * Relooper#**renderAndDispose**(entry: `RelooperBlockRef`, labelHelper: `number`, module: `Module`): `ExpressionRef`<br /> Renders and cleans up the Relooper instance. Call this after you have created all the blocks and branches, giving it the entry block (where control flow begins), a label helper variable (an index of a local we can use, necessary for irreducible control flow), and the module. This returns an expression - normal WebAssembly code - that you can use normally anywhere. ### Source maps * Module#**addDebugInfoFileName**(filename: `string`): `number`<br /> Adds a debug info file name to the module and returns its index. * Module#**getDebugInfoFileName**(index: `number`): `string | null` <br /> Gets the name of the debug info file at the specified index. * Module#**setDebugLocation**(func: `FunctionRef`, expr: `ExpressionRef`, fileIndex: `number`, lineNumber: `number`, columnNumber: `number`): `void`<br /> Sets the debug location of the specified `ExpressionRef` within the specified `FunctionRef`. ### Debugging * Module#**interpret**(): `void`<br /> Runs the module in the interpreter, calling the start function. ### Esrecurse [](https://travis-ci.org/estools/esrecurse) Esrecurse ([esrecurse](https://github.com/estools/esrecurse)) is [ECMAScript](https://www.ecma-international.org/publications/standards/Ecma-262.htm) recursive traversing functionality. ### Example Usage The following code will output all variables declared at the root of a file. ```javascript esrecurse.visit(ast, { XXXStatement: function (node) { this.visit(node.left); // do something... this.visit(node.right); } }); ``` We can use `Visitor` instance. ```javascript var visitor = new esrecurse.Visitor({ XXXStatement: function (node) { this.visit(node.left); // do something... this.visit(node.right); } }); visitor.visit(ast); ``` We can inherit `Visitor` instance easily. ```javascript class Derived extends esrecurse.Visitor { constructor() { super(null); } XXXStatement(node) { } } ``` ```javascript function DerivedVisitor() { esrecurse.Visitor.call(/* this for constructor */ this /* visitor object automatically becomes this. */); } util.inherits(DerivedVisitor, esrecurse.Visitor); DerivedVisitor.prototype.XXXStatement = function (node) { this.visit(node.left); // do something... this.visit(node.right); }; ``` And you can invoke default visiting operation inside custom visit operation. ```javascript function DerivedVisitor() { esrecurse.Visitor.call(/* this for constructor */ this /* visitor object automatically becomes this. */); } util.inherits(DerivedVisitor, esrecurse.Visitor); DerivedVisitor.prototype.XXXStatement = function (node) { // do something... this.visitChildren(node); }; ``` The `childVisitorKeys` option does customize the behaviour of `this.visitChildren(node)`. We can use user-defined node types. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; esrecurse.visit( ast, { Literal: function (node) { // do something... } }, { // Extending the existing traversing rules. childVisitorKeys: { // TargetNodeName: [ 'keys', 'containing', 'the', 'other', '**node**' ] TestExpression: ['argument'] } } ); ``` We can use the `fallback` option as well. If the `fallback` option is `"iteration"`, `esrecurse` would visit all enumerable properties of unknown nodes. Please note circular references cause the stack overflow. AST might have circular references in additional properties for some purpose (e.g. `node.parent`). ```javascript esrecurse.visit( ast, { Literal: function (node) { // do something... } }, { fallback: 'iteration' } ); ``` If the `fallback` option is a function, `esrecurse` calls this function to determine the enumerable properties of unknown nodes. Please note circular references cause the stack overflow. AST might have circular references in additional properties for some purpose (e.g. `node.parent`). ```javascript esrecurse.visit( ast, { Literal: function (node) { // do something... } }, { fallback: function (node) { return Object.keys(node).filter(function(key) { return key !== 'argument' }); } } ); ``` ### License Copyright (C) 2014 [Yusuke Suzuki](https://github.com/Constellation) (twitter: [@Constellation](https://twitter.com/Constellation)) and other contributors. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. <p align="center"> <a href="http://gulpjs.com"> <img height="257" width="114" src="https://raw.githubusercontent.com/gulpjs/artwork/master/gulp-2x.png"> </a> </p> # interpret [![NPM version][npm-image]][npm-url] [![Downloads][downloads-image]][npm-url] [![Travis Build Status][travis-image]][travis-url] [![AppVeyor Build Status][appveyor-image]][appveyor-url] [![Coveralls Status][coveralls-image]][coveralls-url] [![Gitter chat][gitter-image]][gitter-url] A dictionary of file extensions and associated module loaders. ## What is it This is used by [Liftoff](http://github.com/tkellen/node-liftoff) to automatically require dependencies for configuration files, and by [rechoir](http://github.com/tkellen/node-rechoir) for registering module loaders. ## API ### extensions Map file types to modules which provide a [require.extensions] loader. ```js { '.babel.js': [ { module: '@babel/register', register: function(hook) { // register on .js extension due to https://github.com/joyent/node/blob/v0.12.0/lib/module.js#L353 // which only captures the final extension (.babel.js -> .js) hook({ extensions: '.js' }); }, }, { module: 'babel-register', register: function(hook) { hook({ extensions: '.js' }); }, }, { module: 'babel-core/register', register: function(hook) { hook({ extensions: '.js' }); }, }, { module: 'babel/register', register: function(hook) { hook({ extensions: '.js' }); }, }, ], '.babel.ts': [ { module: '@babel/register', register: function(hook) { hook({ extensions: '.ts' }); }, }, ], '.buble.js': 'buble/register', '.cirru': 'cirru-script/lib/register', '.cjsx': 'node-cjsx/register', '.co': 'coco', '.coffee': ['coffeescript/register', 'coffee-script/register', 'coffeescript', 'coffee-script'], '.coffee.md': ['coffeescript/register', 'coffee-script/register', 'coffeescript', 'coffee-script'], '.csv': 'require-csv', '.eg': 'earlgrey/register', '.esm.js': { module: 'esm', register: function(hook) { // register on .js extension due to https://github.com/joyent/node/blob/v0.12.0/lib/module.js#L353 // which only captures the final extension (.babel.js -> .js) var esmLoader = hook(module); require.extensions['.js'] = esmLoader('module')._extensions['.js']; }, }, '.iced': ['iced-coffee-script/register', 'iced-coffee-script'], '.iced.md': 'iced-coffee-script/register', '.ini': 'require-ini', '.js': null, '.json': null, '.json5': 'json5/lib/require', '.jsx': [ { module: '@babel/register', register: function(hook) { hook({ extensions: '.jsx' }); }, }, { module: 'babel-register', register: function(hook) { hook({ extensions: '.jsx' }); }, }, { module: 'babel-core/register', register: function(hook) { hook({ extensions: '.jsx' }); }, }, { module: 'babel/register', register: function(hook) { hook({ extensions: '.jsx' }); }, }, { module: 'node-jsx', register: function(hook) { hook.install({ extension: '.jsx', harmony: true }); }, }, ], '.litcoffee': ['coffeescript/register', 'coffee-script/register', 'coffeescript', 'coffee-script'], '.liticed': 'iced-coffee-script/register', '.ls': ['livescript', 'LiveScript'], '.mjs': '/absolute/path/to/interpret/mjs-stub.js', '.node': null, '.toml': { module: 'toml-require', register: function(hook) { hook.install(); }, }, '.ts': [ 'ts-node/register', 'typescript-node/register', 'typescript-register', 'typescript-require', 'sucrase/register/ts', { module: '@babel/register', register: function(hook) { hook({ extensions: '.ts' }); }, }, ], '.tsx': [ 'ts-node/register', 'typescript-node/register', 'sucrase/register', { module: '@babel/register', register: function(hook) { hook({ extensions: '.tsx' }); }, }, ], '.wisp': 'wisp/engine/node', '.xml': 'require-xml', '.yaml': 'require-yaml', '.yml': 'require-yaml', } ``` ### jsVariants Same as above, but only include the extensions which are javascript variants. ## How to use it Consumers should use the exported `extensions` or `jsVariants` object to determine which module should be loaded for a given extension. If a matching extension is found, consumers should do the following: 1. If the value is null, do nothing. 2. If the value is a string, try to require it. 3. If the value is an object, try to require the `module` property. If successful, the `register` property (a function) should be called with the module passed as the first argument. 4. If the value is an array, iterate over it, attempting step #2 or #3 until one of the attempts does not throw. [require.extensions]: http://nodejs.org/api/globals.html#globals_require_extensions [downloads-image]: http://img.shields.io/npm/dm/interpret.svg [npm-url]: https://www.npmjs.com/package/interpret [npm-image]: http://img.shields.io/npm/v/interpret.svg [travis-url]: https://travis-ci.org/gulpjs/interpret [travis-image]: http://img.shields.io/travis/gulpjs/interpret.svg?label=travis-ci [appveyor-url]: https://ci.appveyor.com/project/gulpjs/interpret [appveyor-image]: https://img.shields.io/appveyor/ci/gulpjs/interpret.svg?label=appveyor [coveralls-url]: https://coveralls.io/r/gulpjs/interpret [coveralls-image]: http://img.shields.io/coveralls/gulpjs/interpret/master.svg [gitter-url]: https://gitter.im/gulpjs/gulp [gitter-image]: https://badges.gitter.im/gulpjs/gulp.svg <img align="right" alt="Ajv logo" width="160" src="https://ajv.js.org/img/ajv.svg"> &nbsp; # Ajv JSON schema validator The fastest JSON validator for Node.js and browser. Supports JSON Schema draft-04/06/07/2019-09/2020-12 ([draft-04 support](https://ajv.js.org/json-schema.html#draft-04) requires ajv-draft-04 package) and JSON Type Definition [RFC8927](https://datatracker.ietf.org/doc/rfc8927/). 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We welcome implementing new features that will benefit many users and ideas to improve our documentation. Please review [Contributing guidelines](./CONTRIBUTING.md) and [Code components](https://ajv.js.org/components.html). ## Documentation All documentation is available on the [Ajv website](https://ajv.js.org). Some useful site links: - [Getting started](https://ajv.js.org/guide/getting-started.html) - [JSON Schema vs JSON Type Definition](https://ajv.js.org/guide/schema-language.html) - [API reference](https://ajv.js.org/api.html) - [Strict mode](https://ajv.js.org/strict-mode.html) - [Standalone validation code](https://ajv.js.org/standalone.html) - [Security considerations](https://ajv.js.org/security.html) - [Command line interface](https://ajv.js.org/packages/ajv-cli.html) - [Frequently Asked Questions](https://ajv.js.org/faq.html) ## <a name="sponsors"></a>Please [sponsor Ajv development](https://github.com/sponsors/epoberezkin) Since I asked to support Ajv development 40 people and 6 organizations contributed via GitHub and OpenCollective - this support helped receiving the MOSS grant! Your continuing support is very important - the funds will be used to develop and maintain Ajv once the next major version is released. Please sponsor Ajv via: - [GitHub sponsors page](https://github.com/sponsors/epoberezkin) (GitHub will match it) - [Ajv Open Collective️](https://opencollective.com/ajv) Thank you. #### Open Collective sponsors <a href="https://opencollective.com/ajv"><img src="https://opencollective.com/ajv/individuals.svg?width=890"></a> <a href="https://opencollective.com/ajv/organization/0/website"><img src="https://opencollective.com/ajv/organization/0/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/1/website"><img src="https://opencollective.com/ajv/organization/1/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/2/website"><img src="https://opencollective.com/ajv/organization/2/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/3/website"><img src="https://opencollective.com/ajv/organization/3/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/4/website"><img src="https://opencollective.com/ajv/organization/4/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/5/website"><img src="https://opencollective.com/ajv/organization/5/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/6/website"><img src="https://opencollective.com/ajv/organization/6/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/7/website"><img src="https://opencollective.com/ajv/organization/7/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/8/website"><img src="https://opencollective.com/ajv/organization/8/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/9/website"><img src="https://opencollective.com/ajv/organization/9/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/10/website"><img src="https://opencollective.com/ajv/organization/10/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/11/website"><img src="https://opencollective.com/ajv/organization/11/avatar.svg"></a> ## Performance Ajv generates code to turn JSON Schemas into super-fast validation functions that are efficient for v8 optimization. Currently Ajv is the fastest and the most standard compliant validator according to these benchmarks: - [json-schema-benchmark](https://github.com/ebdrup/json-schema-benchmark) - 50% faster than the second place - [jsck benchmark](https://github.com/pandastrike/jsck#benchmarks) - 20-190% faster - [z-schema benchmark](https://rawgit.com/zaggino/z-schema/master/benchmark/results.html) - [themis benchmark](https://cdn.rawgit.com/playlyfe/themis/master/benchmark/results.html) Performance of different validators by [json-schema-benchmark](https://github.com/ebdrup/json-schema-benchmark): [](https://github.com/ebdrup/json-schema-benchmark/blob/master/README.md#performance) ## Features - Ajv implements JSON Schema [draft-06/07/2019-09/2020-12](http://json-schema.org/) standards (draft-04 is supported in v6): - all validation keywords (see [JSON Schema validation keywords](https://ajv.js.org/json-schema.html)) - [OpenAPI](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.3.md) extensions: - NEW: keyword [discriminator](https://ajv.js.org/json-schema.html#discriminator). - keyword [nullable](https://ajv.js.org/json-schema.html#nullable). - full support of remote references (remote schemas have to be added with `addSchema` or compiled to be available) - support of recursive references between schemas - correct string lengths for strings with unicode pairs - JSON Schema [formats](https://ajv.js.org/guide/formats.html) (with [ajv-formats](https://github.com/ajv-validator/ajv-formats) plugin). - [validates schemas against meta-schema](https://ajv.js.org/api.html#api-validateschema) - NEW: supports [JSON Type Definition](https://datatracker.ietf.org/doc/rfc8927/): - all keywords (see [JSON Type Definition schema forms](https://ajv.js.org/json-type-definition.html)) - meta-schema for JTD schemas - "union" keyword and user-defined keywords (can be used inside "metadata" member of the schema) - supports [browsers](https://ajv.js.org/guide/environments.html#browsers) and Node.js 10.x - current - [asynchronous loading](https://ajv.js.org/guide/managing-schemas.html#asynchronous-schema-loading) of referenced schemas during compilation - "All errors" validation mode with [option allErrors](https://ajv.js.org/options.html#allerrors) - [error messages with parameters](https://ajv.js.org/api.html#validation-errors) describing error reasons to allow error message generation - i18n error messages support with [ajv-i18n](https://github.com/ajv-validator/ajv-i18n) package - [removing-additional-properties](https://ajv.js.org/guide/modifying-data.html#removing-additional-properties) - [assigning defaults](https://ajv.js.org/guide/modifying-data.html#assigning-defaults) to missing properties and items - [coercing data](https://ajv.js.org/guide/modifying-data.html#coercing-data-types) to the types specified in `type` keywords - [user-defined keywords](https://ajv.js.org/guide/user-keywords.html) - additional extension keywords with [ajv-keywords](https://github.com/ajv-validator/ajv-keywords) package - [\$data reference](https://ajv.js.org/guide/combining-schemas.html#data-reference) to use values from the validated data as values for the schema keywords - [asynchronous validation](https://ajv.js.org/guide/async-validation.html) of user-defined formats and keywords ## Install To install version 8: ``` npm install ajv ``` ## <a name="usage"></a>Getting started Try it in the Node.js REPL: https://runkit.com/npm/ajv In JavaScript: ```javascript // or ESM/TypeScript import import Ajv from "ajv" // Node.js require: const Ajv = require("ajv") const ajv = new Ajv() // options can be passed, e.g. {allErrors: true} const schema = { type: "object", properties: { foo: {type: "integer"}, bar: {type: "string"} }, required: ["foo"], additionalProperties: false, } const data = { foo: 1, bar: "abc" } const validate = ajv.compile(schema) const valid = validate(data) if (!valid) console.log(validate.errors) ``` Learn how to use Ajv and see more examples in the [Guide: getting started](https://ajv.js.org/guide/getting-started.html) ## Changes history See [https://github.com/ajv-validator/ajv/releases](https://github.com/ajv-validator/ajv/releases) **Please note**: [Changes in version 8.0.0](https://github.com/ajv-validator/ajv/releases/tag/v8.0.0) [Version 7.0.0](https://github.com/ajv-validator/ajv/releases/tag/v7.0.0) [Version 6.0.0](https://github.com/ajv-validator/ajv/releases/tag/v6.0.0). ## Code of conduct Please review and follow the [Code of conduct](./CODE_OF_CONDUCT.md). Please report any unacceptable behaviour to ajv.validator@gmail.com - it will be reviewed by the project team. ## Security contact To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. Please do NOT report security vulnerabilities via GitHub issues. ## Open-source software support Ajv is a part of [Tidelift subscription](https://tidelift.com/subscription/pkg/npm-ajv?utm_source=npm-ajv&utm_medium=referral&utm_campaign=readme) - it provides a centralised support to open-source software users, in addition to the support provided by software maintainers. ## License [MIT](./LICENSE) The AssemblyScript Runtime ========================== The runtime provides the functionality necessary to dynamically allocate and deallocate memory of objects, arrays and buffers, as well as collect garbage that is no longer used. The current implementation is either a Two-Color Mark & Sweep (TCMS) garbage collector that must be called manually when the execution stack is unwound or an Incremental Tri-Color Mark & Sweep (ITCMS) garbage collector that is fully automated with a shadow stack, implemented on top of a Two-Level Segregate Fit (TLSF) memory manager. It's not designed to be the fastest of its kind, but intentionally focuses on simplicity and ease of integration until we can replace it with the real deal, i.e. Wasm GC. Interface --------- ### Garbage collector / `--exportRuntime` * **__new**(size: `usize`, id: `u32` = 0): `usize`<br /> Dynamically allocates a GC object of at least the specified size and returns its address. Alignment is guaranteed to be 16 bytes to fit up to v128 values naturally. GC-allocated objects cannot be used with `__realloc` and `__free`. * **__pin**(ptr: `usize`): `usize`<br /> Pins the object pointed to by `ptr` externally so it and its directly reachable members and indirectly reachable objects do not become garbage collected. * **__unpin**(ptr: `usize`): `void`<br /> Unpins the object pointed to by `ptr` externally so it can become garbage collected. * **__collect**(): `void`<br /> Performs a full garbage collection. ### Internals * **__alloc**(size: `usize`): `usize`<br /> Dynamically allocates a chunk of memory of at least the specified size and returns its address. Alignment is guaranteed to be 16 bytes to fit up to v128 values naturally. * **__realloc**(ptr: `usize`, size: `usize`): `usize`<br /> Dynamically changes the size of a chunk of memory, possibly moving it to a new address. * **__free**(ptr: `usize`): `void`<br /> Frees a dynamically allocated chunk of memory by its address. * **__renew**(ptr: `usize`, size: `usize`): `usize`<br /> Like `__realloc`, but for `__new`ed GC objects. * **__link**(parentPtr: `usize`, childPtr: `usize`, expectMultiple: `bool`): `void`<br /> Introduces a link from a parent object to a child object, i.e. upon `parent.field = child`. * **__visit**(ptr: `usize`, cookie: `u32`): `void`<br /> Concrete visitor implementation called during traversal. Cookie can be used to indicate one of multiple operations. * **__visit_globals**(cookie: `u32`): `void`<br /> Calls `__visit` on each global that is of a managed type. * **__visit_members**(ptr: `usize`, cookie: `u32`): `void`<br /> Calls `__visit` on each member of the object pointed to by `ptr`. * **__typeinfo**(id: `u32`): `RTTIFlags`<br /> Obtains the runtime type information for objects with the specified runtime id. Runtime type information is a set of flags indicating whether a type is managed, an array or similar, and what the relevant alignments when creating an instance externally are etc. * **__instanceof**(ptr: `usize`, classId: `u32`): `bool`<br /> Tests if the object pointed to by `ptr` is an instance of the specified class id. ITCMS / `--runtime incremental` ----- The Incremental Tri-Color Mark & Sweep garbage collector maintains a separate shadow stack of managed values in the background to achieve full automation. Maintaining another stack introduces some overhead compared to the simpler Two-Color Mark & Sweep garbage collector, but makes it independent of whether the execution stack is unwound or not when it is invoked, so the garbage collector can run interleaved with the program. There are several constants one can experiment with to tweak ITCMS's automation: * `--use ASC_GC_GRANULARITY=1024`<br /> How often to interrupt. The default of 1024 means "interrupt each 1024 bytes allocated". * `--use ASC_GC_STEPFACTOR=200`<br /> How long to interrupt. The default of 200% means "run at double the speed of allocations". * `--use ASC_GC_IDLEFACTOR=200`<br /> How long to idle. The default of 200% means "wait for memory to double before kicking in again". * `--use ASC_GC_MARKCOST=1`<br /> How costly it is to mark one object. Budget per interrupt is `GRANULARITY * STEPFACTOR / 100`. * `--use ASC_GC_SWEEPCOST=10`<br /> How costly it is to sweep one object. Budget per interrupt is `GRANULARITY * STEPFACTOR / 100`. TCMS / `--runtime minimal` ---- If automation and low pause times aren't strictly necessary, using the Two-Color Mark & Sweep garbage collector instead by invoking collection manually at appropriate times when the execution stack is unwound may be more performant as it simpler and has less overhead. The execution stack is typically unwound when invoking the collector externally, at a place that is not indirectly called from Wasm. STUB / `--runtime stub` ---- The stub is a maximally minimal runtime substitute, consisting of a simple and fast bump allocator with no means of freeing up memory again, except when freeing the respective most recently allocated object on top of the bump. Useful where memory is not a concern, and/or where it is sufficient to destroy the whole module including any potential garbage after execution. See also: [Garbage collection](https://www.assemblyscript.org/garbage-collection.html) # yargs-parser [](https://travis-ci.org/yargs/yargs-parser) [](https://www.npmjs.com/package/yargs-parser) [](https://github.com/conventional-changelog/standard-version) The mighty option parser used by [yargs](https://github.com/yargs/yargs). visit the [yargs website](http://yargs.js.org/) for more examples, and thorough usage instructions. <img width="250" src="https://raw.githubusercontent.com/yargs/yargs-parser/master/yargs-logo.png"> ## Example ```sh npm i yargs-parser --save ``` ```js var argv = require('yargs-parser')(process.argv.slice(2)) console.log(argv) ``` ```sh node example.js --foo=33 --bar hello { _: [], foo: 33, bar: 'hello' } ``` _or parse a string!_ ```js var argv = require('yargs-parser')('--foo=99 --bar=33') console.log(argv) ``` ```sh { _: [], foo: 99, bar: 33 } ``` Convert an array of mixed types before passing to `yargs-parser`: ```js var parse = require('yargs-parser') parse(['-f', 11, '--zoom', 55].join(' ')) // <-- array to string parse(['-f', 11, '--zoom', 55].map(String)) // <-- array of strings ``` ## API ### require('yargs-parser')(args, opts={}) Parses command line arguments returning a simple mapping of keys and values. **expects:** * `args`: a string or array of strings representing the options to parse. * `opts`: provide a set of hints indicating how `args` should be parsed: * `opts.alias`: an object representing the set of aliases for a key: `{alias: {foo: ['f']}}`. * `opts.array`: indicate that keys should be parsed as an array: `{array: ['foo', 'bar']}`.<br> Indicate that keys should be parsed as an array and coerced to booleans / numbers:<br> `{array: [{ key: 'foo', boolean: true }, {key: 'bar', number: true}]}`. * `opts.boolean`: arguments should be parsed as booleans: `{boolean: ['x', 'y']}`. * `opts.coerce`: provide a custom synchronous function that returns a coerced value from the argument provided (or throws an error). For arrays the function is called only once for the entire array:<br> `{coerce: {foo: function (arg) {return modifiedArg}}}`. * `opts.config`: indicate a key that represents a path to a configuration file (this file will be loaded and parsed). * `opts.configObjects`: configuration objects to parse, their properties will be set as arguments:<br> `{configObjects: [{'x': 5, 'y': 33}, {'z': 44}]}`. * `opts.configuration`: provide configuration options to the yargs-parser (see: [configuration](#configuration)). * `opts.count`: indicate a key that should be used as a counter, e.g., `-vvv` = `{v: 3}`. * `opts.default`: provide default values for keys: `{default: {x: 33, y: 'hello world!'}}`. * `opts.envPrefix`: environment variables (`process.env`) with the prefix provided should be parsed. * `opts.narg`: specify that a key requires `n` arguments: `{narg: {x: 2}}`. * `opts.normalize`: `path.normalize()` will be applied to values set to this key. * `opts.number`: keys should be treated as numbers. * `opts.string`: keys should be treated as strings (even if they resemble a number `-x 33`). **returns:** * `obj`: an object representing the parsed value of `args` * `key/value`: key value pairs for each argument and their aliases. * `_`: an array representing the positional arguments. * [optional] `--`: an array with arguments after the end-of-options flag `--`. ### require('yargs-parser').detailed(args, opts={}) Parses a command line string, returning detailed information required by the yargs engine. **expects:** * `args`: a string or array of strings representing options to parse. * `opts`: provide a set of hints indicating how `args`, inputs are identical to `require('yargs-parser')(args, opts={})`. **returns:** * `argv`: an object representing the parsed value of `args` * `key/value`: key value pairs for each argument and their aliases. * `_`: an array representing the positional arguments. * [optional] `--`: an array with arguments after the end-of-options flag `--`. * `error`: populated with an error object if an exception occurred during parsing. * `aliases`: the inferred list of aliases built by combining lists in `opts.alias`. * `newAliases`: any new aliases added via camel-case expansion: * `boolean`: `{ fooBar: true }` * `defaulted`: any new argument created by `opts.default`, no aliases included. * `boolean`: `{ foo: true }` * `configuration`: given by default settings and `opts.configuration`. <a name="configuration"></a> ### Configuration The yargs-parser applies several automated transformations on the keys provided in `args`. These features can be turned on and off using the `configuration` field of `opts`. ```js var parsed = parser(['--no-dice'], { configuration: { 'boolean-negation': false } }) ``` ### short option groups * default: `true`. * key: `short-option-groups`. Should a group of short-options be treated as boolean flags? ```sh node example.js -abc { _: [], a: true, b: true, c: true } ``` _if disabled:_ ```sh node example.js -abc { _: [], abc: true } ``` ### camel-case expansion * default: `true`. * key: `camel-case-expansion`. Should hyphenated arguments be expanded into camel-case aliases? ```sh node example.js --foo-bar { _: [], 'foo-bar': true, fooBar: true } ``` _if disabled:_ ```sh node example.js --foo-bar { _: [], 'foo-bar': true } ``` ### dot-notation * default: `true` * key: `dot-notation` Should keys that contain `.` be treated as objects? ```sh node example.js --foo.bar { _: [], foo: { bar: true } } ``` _if disabled:_ ```sh node example.js --foo.bar { _: [], "foo.bar": true } ``` ### parse numbers * default: `true` * key: `parse-numbers` Should keys that look like numbers be treated as such? ```sh node example.js --foo=99.3 { _: [], foo: 99.3 } ``` _if disabled:_ ```sh node example.js --foo=99.3 { _: [], foo: "99.3" } ``` ### boolean negation * default: `true` * key: `boolean-negation` Should variables prefixed with `--no` be treated as negations? ```sh node example.js --no-foo { _: [], foo: false } ``` _if disabled:_ ```sh node example.js --no-foo { _: [], "no-foo": true } ``` ### combine arrays * default: `false` * key: `combine-arrays` Should arrays be combined when provided by both command line arguments and a configuration file. ### duplicate arguments array * default: `true` * key: `duplicate-arguments-array` Should arguments be coerced into an array when duplicated: ```sh node example.js -x 1 -x 2 { _: [], x: [1, 2] } ``` _if disabled:_ ```sh node example.js -x 1 -x 2 { _: [], x: 2 } ``` ### flatten duplicate arrays * default: `true` * key: `flatten-duplicate-arrays` Should array arguments be coerced into a single array when duplicated: ```sh node example.js -x 1 2 -x 3 4 { _: [], x: [1, 2, 3, 4] } ``` _if disabled:_ ```sh node example.js -x 1 2 -x 3 4 { _: [], x: [[1, 2], [3, 4]] } ``` ### greedy arrays * default: `true` * key: `greedy-arrays` Should arrays consume more than one positional argument following their flag. ```sh node example --arr 1 2 { _[], arr: [1, 2] } ``` _if disabled:_ ```sh node example --arr 1 2 { _[2], arr: [1] } ``` **Note: in `v18.0.0` we are considering defaulting greedy arrays to `false`.** ### nargs eats options * default: `false` * key: `nargs-eats-options` Should nargs consume dash options as well as positional arguments. ### negation prefix * default: `no-` * key: `negation-prefix` The prefix to use for negated boolean variables. ```sh node example.js --no-foo { _: [], foo: false } ``` _if set to `quux`:_ ```sh node example.js --quuxfoo { _: [], foo: false } ``` ### populate -- * default: `false`. * key: `populate--` Should unparsed flags be stored in `--` or `_`. _If disabled:_ ```sh node example.js a -b -- x y { _: [ 'a', 'x', 'y' ], b: true } ``` _If enabled:_ ```sh node example.js a -b -- x y { _: [ 'a' ], '--': [ 'x', 'y' ], b: true } ``` ### set placeholder key * default: `false`. * key: `set-placeholder-key`. Should a placeholder be added for keys not set via the corresponding CLI argument? _If disabled:_ ```sh node example.js -a 1 -c 2 { _: [], a: 1, c: 2 } ``` _If enabled:_ ```sh node example.js -a 1 -c 2 { _: [], a: 1, b: undefined, c: 2 } ``` ### halt at non-option * default: `false`. * key: `halt-at-non-option`. Should parsing stop at the first positional argument? This is similar to how e.g. `ssh` parses its command line. _If disabled:_ ```sh node example.js -a run b -x y { _: [ 'b' ], a: 'run', x: 'y' } ``` _If enabled:_ ```sh node example.js -a run b -x y { _: [ 'b', '-x', 'y' ], a: 'run' } ``` ### strip aliased * default: `false` * key: `strip-aliased` Should aliases be removed before returning results? _If disabled:_ ```sh node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1, 'test-alias': 1, testAlias: 1 } ``` _If enabled:_ ```sh node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1 } ``` ### strip dashed * default: `false` * key: `strip-dashed` Should dashed keys be removed before returning results? This option has no effect if `camel-case-expansion` is disabled. _If disabled:_ ```sh node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1 } ``` _If enabled:_ ```sh node example.js --test-field 1 { _: [], testField: 1 } ``` ### unknown options as args * default: `false` * key: `unknown-options-as-args` Should unknown options be treated like regular arguments? An unknown option is one that is not configured in `opts`. _If disabled_ ```sh node example.js --unknown-option --known-option 2 --string-option --unknown-option2 { _: [], unknownOption: true, knownOption: 2, stringOption: '', unknownOption2: true } ``` _If enabled_ ```sh node example.js --unknown-option --known-option 2 --string-option --unknown-option2 { _: ['--unknown-option'], knownOption: 2, stringOption: '--unknown-option2' } ``` ## Special Thanks The yargs project evolves from optimist and minimist. It owes its existence to a lot of James Halliday's hard work. Thanks [substack](https://github.com/substack) **beep** **boop** \o/ ## License ISC # levn [](https://travis-ci.org/gkz/levn) <a name="levn" /> __Light ECMAScript (JavaScript) Value Notation__ Levn is a library which allows you to parse a string into a JavaScript value based on an expected type. It is meant for short amounts of human entered data (eg. config files, command line arguments). Levn aims to concisely describe JavaScript values in text, and allow for the extraction and validation of those values. Levn uses [type-check](https://github.com/gkz/type-check) for its type format, and to validate the results. MIT license. Version 0.4.1. __How is this different than JSON?__ levn is meant to be written by humans only, is (due to the previous point) much more concise, can be validated against supplied types, has regex and date literals, and can easily be extended with custom types. On the other hand, it is probably slower and thus less efficient at transporting large amounts of data, which is fine since this is not its purpose. npm install levn For updates on levn, [follow me on twitter](https://twitter.com/gkzahariev). ## Quick Examples ```js var parse = require('levn').parse; parse('Number', '2'); // 2 parse('String', '2'); // '2' parse('String', 'levn'); // 'levn' parse('String', 'a b'); // 'a b' parse('Boolean', 'true'); // true parse('Date', '#2011-11-11#'); // (Date object) parse('Date', '2011-11-11'); // (Date object) parse('RegExp', '/[a-z]/gi'); // /[a-z]/gi parse('RegExp', 're'); // /re/ parse('Int', '2'); // 2 parse('Number | String', 'str'); // 'str' parse('Number | String', '2'); // 2 parse('[Number]', '[1,2,3]'); // [1,2,3] parse('(String, Boolean)', '(hi, false)'); // ['hi', false] parse('{a: String, b: Number}', '{a: str, b: 2}'); // {a: 'str', b: 2} // at the top level, you can ommit surrounding delimiters parse('[Number]', '1,2,3'); // [1,2,3] parse('(String, Boolean)', 'hi, false'); // ['hi', false] parse('{a: String, b: Number}', 'a: str, b: 2'); // {a: 'str', b: 2} // wildcard - auto choose type parse('*', '[hi,(null,[42]),{k: true}]'); // ['hi', [null, [42]], {k: true}] ``` ## Usage `require('levn');` returns an object that exposes three properties. `VERSION` is the current version of the library as a string. `parse` and `parsedTypeParse` are functions. ```js // parse(type, input, options); parse('[Number]', '1,2,3'); // [1, 2, 3] // parsedTypeParse(parsedType, input, options); var parsedType = require('type-check').parseType('[Number]'); parsedTypeParse(parsedType, '1,2,3'); // [1, 2, 3] ``` ### parse(type, input, options) `parse` casts the string `input` into a JavaScript value according to the specified `type` in the [type format](https://github.com/gkz/type-check#type-format) (and taking account the optional `options`) and returns the resulting JavaScript value. ##### arguments * type - `String` - the type written in the [type format](https://github.com/gkz/type-check#type-format) which to check against * input - `String` - the value written in the [levn format](#levn-format) * options - `Maybe Object` - an optional parameter specifying additional [options](#options) ##### returns `*` - the resulting JavaScript value ##### example ```js parse('[Number]', '1,2,3'); // [1, 2, 3] ``` ### parsedTypeParse(parsedType, input, options) `parsedTypeParse` casts the string `input` into a JavaScript value according to the specified `type` which has already been parsed (and taking account the optional `options`) and returns the resulting JavaScript value. You can parse a type using the [type-check](https://github.com/gkz/type-check) library's `parseType` function. ##### arguments * type - `Object` - the type in the parsed type format which to check against * input - `String` - the value written in the [levn format](#levn-format) * options - `Maybe Object` - an optional parameter specifying additional [options](#options) ##### returns `*` - the resulting JavaScript value ##### example ```js var parsedType = require('type-check').parseType('[Number]'); parsedTypeParse(parsedType, '1,2,3'); // [1, 2, 3] ``` ## Levn Format Levn can use the type information you provide to choose the appropriate value to produce from the input. For the same input, it will choose a different output value depending on the type provided. For example, `parse('Number', '2')` will produce the number `2`, but `parse('String', '2')` will produce the string `"2"`. If you do not provide type information, and simply use `*`, levn will parse the input according the unambiguous "explicit" mode, which we will now detail - you can also set the `explicit` option to true manually in the [options](#options). * `"string"`, `'string'` are parsed as a String, eg. `"a msg"` is `"a msg"` * `#date#` is parsed as a Date, eg. `#2011-11-11#` is `new Date('2011-11-11')` * `/regexp/flags` is parsed as a RegExp, eg. `/re/gi` is `/re/gi` * `undefined`, `null`, `NaN`, `true`, and `false` are all their JavaScript equivalents * `[element1, element2, etc]` is an Array, and the casting procedure is recursively applied to each element. Eg. `[1,2,3]` is `[1,2,3]`. * `(element1, element2, etc)` is an tuple, and the casting procedure is recursively applied to each element. Eg. `(1, a)` is `(1, a)` (is `[1, 'a']`). * `{key1: val1, key2: val2, ...}` is an Object, and the casting procedure is recursively applied to each property. Eg. `{a: 1, b: 2}` is `{a: 1, b: 2}`. * Any test which does not fall under the above, and which does not contain special characters (`[``]``(``)``{``}``:``,`) is a string, eg. `$12- blah` is `"$12- blah"`. If you do provide type information, you can make your input more concise as the program already has some information about what it expects. Please see the [type format](https://github.com/gkz/type-check#type-format) section of [type-check](https://github.com/gkz/type-check) for more information about how to specify types. There are some rules about what levn can do with the information: * If a String is expected, and only a String, all characters of the input (including any special ones) will become part of the output. Eg. `[({})]` is `"[({})]"`, and `"hi"` is `'"hi"'`. * If a Date is expected, the surrounding `#` can be omitted from date literals. Eg. `2011-11-11` is `new Date('2011-11-11')`. * If a RegExp is expected, no flags need to be specified, and the regex is not using any of the special characters,the opening and closing `/` can be omitted - this will have the affect of setting the source of the regex to the input. Eg. `regex` is `/regex/`. * If an Array is expected, and it is the root node (at the top level), the opening `[` and closing `]` can be omitted. Eg. `1,2,3` is `[1,2,3]`. * If a tuple is expected, and it is the root node (at the top level), the opening `(` and closing `)` can be omitted. Eg. `1, a` is `(1, a)` (is `[1, 'a']`). * If an Object is expected, and it is the root node (at the top level), the opening `{` and closing `}` can be omitted. Eg `a: 1, b: 2` is `{a: 1, b: 2}`. If you list multiple types (eg. `Number | String`), it will first attempt to cast to the first type and then validate - if the validation fails it will move on to the next type and so forth, left to right. You must be careful as some types will succeed with any input, such as String. Thus put String at the end of your list. In non-explicit mode, Date and RegExp will succeed with a large variety of input - also be careful with these and list them near the end if not last in your list. Whitespace between special characters and elements is inconsequential. ## Options Options is an object. It is an optional parameter to the `parse` and `parsedTypeParse` functions. ### Explicit A `Boolean`. By default it is `false`. __Example:__ ```js parse('RegExp', 're', {explicit: false}); // /re/ parse('RegExp', 're', {explicit: true}); // Error: ... does not type check... parse('RegExp | String', 're', {explicit: true}); // 're' ``` `explicit` sets whether to be in explicit mode or not. Using `*` automatically activates explicit mode. For more information, read the [levn format](#levn-format) section. ### customTypes An `Object`. Empty `{}` by default. __Example:__ ```js var options = { customTypes: { Even: { typeOf: 'Number', validate: function (x) { return x % 2 === 0; }, cast: function (x) { return {type: 'Just', value: parseInt(x)}; } } } } parse('Even', '2', options); // 2 parse('Even', '3', options); // Error: Value: "3" does not type check... ``` __Another Example:__ ```js function Person(name, age){ this.name = name; this.age = age; } var options = { customTypes: { Person: { typeOf: 'Object', validate: function (x) { x instanceof Person; }, cast: function (value, options, typesCast) { var name, age; if ({}.toString.call(value).slice(8, -1) !== 'Object') { return {type: 'Nothing'}; } name = typesCast(value.name, [{type: 'String'}], options); age = typesCast(value.age, [{type: 'Numger'}], options); return {type: 'Just', value: new Person(name, age)}; } } } parse('Person', '{name: Laura, age: 25}', options); // Person {name: 'Laura', age: 25} ``` `customTypes` is an object whose keys are the name of the types, and whose values are an object with three properties, `typeOf`, `validate`, and `cast`. For more information about `typeOf` and `validate`, please see the [custom types](https://github.com/gkz/type-check#custom-types) section of type-check. `cast` is a function which receives three arguments, the value under question, options, and the typesCast function. In `cast`, attempt to cast the value into the specified type. If you are successful, return an object in the format `{type: 'Just', value: CAST-VALUE}`, if you know it won't work, return `{type: 'Nothing'}`. You can use the `typesCast` function to cast any child values. Remember to pass `options` to it. In your function you can also check for `options.explicit` and act accordingly. ## Technical About `levn` is written in [LiveScript](http://livescript.net/) - a language that compiles to JavaScript. It uses [type-check](https://github.com/gkz/type-check) to both parse types and validate values. It also uses the [prelude.ls](http://preludels.com/) library. # fs-minipass Filesystem streams based on [minipass](http://npm.im/minipass). 4 classes are exported: - ReadStream - ReadStreamSync - WriteStream - WriteStreamSync When using `ReadStreamSync`, all of the data is made available immediately upon consuming the stream. Nothing is buffered in memory when the stream is constructed. If the stream is piped to a writer, then it will synchronously `read()` and emit data into the writer as fast as the writer can consume it. (That is, it will respect backpressure.) If you call `stream.read()` then it will read the entire file and return the contents. When using `WriteStreamSync`, every write is flushed to the file synchronously. If your writes all come in a single tick, then it'll write it all out in a single tick. It's as synchronous as you are. The async versions work much like their node builtin counterparts, with the exception of introducing significantly less Stream machinery overhead. ## USAGE It's just streams, you pipe them or read() them or write() to them. ```js const fsm = require('fs-minipass') const readStream = new fsm.ReadStream('file.txt') const writeStream = new fsm.WriteStream('output.txt') writeStream.write('some file header or whatever\n') readStream.pipe(writeStream) ``` ## ReadStream(path, options) Path string is required, but somewhat irrelevant if an open file descriptor is passed in as an option. Options: - `fd` Pass in a numeric file descriptor, if the file is already open. - `readSize` The size of reads to do, defaults to 16MB - `size` The size of the file, if known. Prevents zero-byte read() call at the end. - `autoClose` Set to `false` to prevent the file descriptor from being closed when the file is done being read. ## WriteStream(path, options) Path string is required, but somewhat irrelevant if an open file descriptor is passed in as an option. Options: - `fd` Pass in a numeric file descriptor, if the file is already open. - `mode` The mode to create the file with. Defaults to `0o666`. - `start` The position in the file to start reading. If not specified, then the file will start writing at position zero, and be truncated by default. - `autoClose` Set to `false` to prevent the file descriptor from being closed when the stream is ended. - `flags` Flags to use when opening the file. Irrelevant if `fd` is passed in, since file won't be opened in that case. Defaults to `'a'` if a `pos` is specified, or `'w'` otherwise. long.js ======= A Long class for representing a 64 bit two's-complement integer value derived from the [Closure Library](https://github.com/google/closure-library) for stand-alone use and extended with unsigned support. [](https://travis-ci.org/dcodeIO/long.js) Background ---------- As of [ECMA-262 5th Edition](http://ecma262-5.com/ELS5_HTML.htm#Section_8.5), "all the positive and negative integers whose magnitude is no greater than 2<sup>53</sup> are representable in the Number type", which is "representing the doubleprecision 64-bit format IEEE 754 values as specified in the IEEE Standard for Binary Floating-Point Arithmetic". The [maximum safe integer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER) in JavaScript is 2<sup>53</sup>-1. Example: 2<sup>64</sup>-1 is 1844674407370955**1615** but in JavaScript it evaluates to 1844674407370955**2000**. Furthermore, bitwise operators in JavaScript "deal only with integers in the range −2<sup>31</sup> through 2<sup>31</sup>−1, inclusive, or in the range 0 through 2<sup>32</sup>−1, inclusive. These operators accept any value of the Number type but first convert each such value to one of 2<sup>32</sup> integer values." In some use cases, however, it is required to be able to reliably work with and perform bitwise operations on the full 64 bits. This is where long.js comes into play. Usage ----- The class is compatible with CommonJS and AMD loaders and is exposed globally as `Long` if neither is available. ```javascript var Long = require("long"); var longVal = new Long(0xFFFFFFFF, 0x7FFFFFFF); console.log(longVal.toString()); ... ``` API --- ### Constructor * new **Long**(low: `number`, high: `number`, unsigned?: `boolean`)<br /> Constructs a 64 bit two's-complement integer, given its low and high 32 bit values as *signed* integers. See the from* functions below for more convenient ways of constructing Longs. ### Fields * Long#**low**: `number`<br /> The low 32 bits as a signed value. * Long#**high**: `number`<br /> The high 32 bits as a signed value. * Long#**unsigned**: `boolean`<br /> Whether unsigned or not. ### Constants * Long.**ZERO**: `Long`<br /> Signed zero. * Long.**ONE**: `Long`<br /> Signed one. * Long.**NEG_ONE**: `Long`<br /> Signed negative one. * Long.**UZERO**: `Long`<br /> Unsigned zero. * Long.**UONE**: `Long`<br /> Unsigned one. * Long.**MAX_VALUE**: `Long`<br /> Maximum signed value. * Long.**MIN_VALUE**: `Long`<br /> Minimum signed value. * Long.**MAX_UNSIGNED_VALUE**: `Long`<br /> Maximum unsigned value. ### Utility * Long.**isLong**(obj: `*`): `boolean`<br /> Tests if the specified object is a Long. * Long.**fromBits**(lowBits: `number`, highBits: `number`, unsigned?: `boolean`): `Long`<br /> Returns a Long representing the 64 bit integer that comes by concatenating the given low and high bits. Each is assumed to use 32 bits. * Long.**fromBytes**(bytes: `number[]`, unsigned?: `boolean`, le?: `boolean`): `Long`<br /> Creates a Long from its byte representation. * Long.**fromBytesLE**(bytes: `number[]`, unsigned?: `boolean`): `Long`<br /> Creates a Long from its little endian byte representation. * Long.**fromBytesBE**(bytes: `number[]`, unsigned?: `boolean`): `Long`<br /> Creates a Long from its big endian byte representation. * Long.**fromInt**(value: `number`, unsigned?: `boolean`): `Long`<br /> Returns a Long representing the given 32 bit integer value. * Long.**fromNumber**(value: `number`, unsigned?: `boolean`): `Long`<br /> Returns a Long representing the given value, provided that it is a finite number. Otherwise, zero is returned. * Long.**fromString**(str: `string`, unsigned?: `boolean`, radix?: `number`)<br /> Long.**fromString**(str: `string`, radix: `number`)<br /> Returns a Long representation of the given string, written using the specified radix. * Long.**fromValue**(val: `*`, unsigned?: `boolean`): `Long`<br /> Converts the specified value to a Long using the appropriate from* function for its type. ### Methods * Long#**add**(addend: `Long | number | string`): `Long`<br /> Returns the sum of this and the specified Long. * Long#**and**(other: `Long | number | string`): `Long`<br /> Returns the bitwise AND of this Long and the specified. * Long#**compare**/**comp**(other: `Long | number | string`): `number`<br /> Compares this Long's value with the specified's. Returns `0` if they are the same, `1` if the this is greater and `-1` if the given one is greater. * Long#**divide**/**div**(divisor: `Long | number | string`): `Long`<br /> Returns this Long divided by the specified. * Long#**equals**/**eq**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value equals the specified's. * Long#**getHighBits**(): `number`<br /> Gets the high 32 bits as a signed integer. * Long#**getHighBitsUnsigned**(): `number`<br /> Gets the high 32 bits as an unsigned integer. * Long#**getLowBits**(): `number`<br /> Gets the low 32 bits as a signed integer. * Long#**getLowBitsUnsigned**(): `number`<br /> Gets the low 32 bits as an unsigned integer. * Long#**getNumBitsAbs**(): `number`<br /> Gets the number of bits needed to represent the absolute value of this Long. * Long#**greaterThan**/**gt**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value is greater than the specified's. * Long#**greaterThanOrEqual**/**gte**/**ge**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value is greater than or equal the specified's. * Long#**isEven**(): `boolean`<br /> Tests if this Long's value is even. * Long#**isNegative**(): `boolean`<br /> Tests if this Long's value is negative. * Long#**isOdd**(): `boolean`<br /> Tests if this Long's value is odd. * Long#**isPositive**(): `boolean`<br /> Tests if this Long's value is positive. * Long#**isZero**/**eqz**(): `boolean`<br /> Tests if this Long's value equals zero. * Long#**lessThan**/**lt**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value is less than the specified's. * Long#**lessThanOrEqual**/**lte**/**le**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value is less than or equal the specified's. * Long#**modulo**/**mod**/**rem**(divisor: `Long | number | string`): `Long`<br /> Returns this Long modulo the specified. * Long#**multiply**/**mul**(multiplier: `Long | number | string`): `Long`<br /> Returns the product of this and the specified Long. * Long#**negate**/**neg**(): `Long`<br /> Negates this Long's value. * Long#**not**(): `Long`<br /> Returns the bitwise NOT of this Long. * Long#**notEquals**/**neq**/**ne**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value differs from the specified's. * Long#**or**(other: `Long | number | string`): `Long`<br /> Returns the bitwise OR of this Long and the specified. * Long#**shiftLeft**/**shl**(numBits: `Long | number | string`): `Long`<br /> Returns this Long with bits shifted to the left by the given amount. * Long#**shiftRight**/**shr**(numBits: `Long | number | string`): `Long`<br /> Returns this Long with bits arithmetically shifted to the right by the given amount. * Long#**shiftRightUnsigned**/**shru**/**shr_u**(numBits: `Long | number | string`): `Long`<br /> Returns this Long with bits logically shifted to the right by the given amount. * Long#**subtract**/**sub**(subtrahend: `Long | number | string`): `Long`<br /> Returns the difference of this and the specified Long. * Long#**toBytes**(le?: `boolean`): `number[]`<br /> Converts this Long to its byte representation. * Long#**toBytesLE**(): `number[]`<br /> Converts this Long to its little endian byte representation. * Long#**toBytesBE**(): `number[]`<br /> Converts this Long to its big endian byte representation. * Long#**toInt**(): `number`<br /> Converts the Long to a 32 bit integer, assuming it is a 32 bit integer. * Long#**toNumber**(): `number`<br /> Converts the Long to a the nearest floating-point representation of this value (double, 53 bit mantissa). * Long#**toSigned**(): `Long`<br /> Converts this Long to signed. * Long#**toString**(radix?: `number`): `string`<br /> Converts the Long to a string written in the specified radix. * Long#**toUnsigned**(): `Long`<br /> Converts this Long to unsigned. * Long#**xor**(other: `Long | number | string`): `Long`<br /> Returns the bitwise XOR of this Long and the given one. Building -------- To build an UMD bundle to `dist/long.js`, run: ``` $> npm install $> npm run build ``` Running the [tests](./tests): ``` $> npm test ``` # require-main-filename [](https://travis-ci.org/yargs/require-main-filename) [](https://coveralls.io/r/yargs/require-main-filename?branch=master) [](https://www.npmjs.com/package/require-main-filename) `require.main.filename` is great for figuring out the entry point for the current application. This can be combined with a module like [pkg-conf](https://www.npmjs.com/package/pkg-conf) to, _as if by magic_, load top-level configuration. Unfortunately, `require.main.filename` sometimes fails when an application is executed with an alternative process manager, e.g., [iisnode](https://github.com/tjanczuk/iisnode). `require-main-filename` is a shim that addresses this problem. ## Usage ```js var main = require('require-main-filename')() // use main as an alternative to require.main.filename. ``` ## License ISC bs58 ==== [](https://travis-ci.org/cryptocoinjs/bs58) JavaScript component to compute base 58 encoding. This encoding is typically used for crypto currencies such as Bitcoin. **Note:** If you're looking for **base 58 check** encoding, see: [https://github.com/bitcoinjs/bs58check](https://github.com/bitcoinjs/bs58check), which depends upon this library. Install ------- npm i --save bs58 API --- ### encode(input) `input` must be a [Buffer](https://nodejs.org/api/buffer.html) or an `Array`. It returns a `string`. **example**: ```js const bs58 = require('bs58') const bytes = Buffer.from('003c176e659bea0f29a3e9bf7880c112b1b31b4dc826268187', 'hex') const address = bs58.encode(bytes) console.log(address) // => 16UjcYNBG9GTK4uq2f7yYEbuifqCzoLMGS ``` ### decode(input) `input` must be a base 58 encoded string. Returns a [Buffer](https://nodejs.org/api/buffer.html). **example**: ```js const bs58 = require('bs58') const address = '16UjcYNBG9GTK4uq2f7yYEbuifqCzoLMGS' const bytes = bs58.decode(address) console.log(out.toString('hex')) // => 003c176e659bea0f29a3e9bf7880c112b1b31b4dc826268187 ``` Hack / Test ----------- Uses JavaScript standard style. Read more: [](https://github.com/feross/standard) Credits ------- - [Mike Hearn](https://github.com/mikehearn) for original Java implementation - [Stefan Thomas](https://github.com/justmoon) for porting to JavaScript - [Stephan Pair](https://github.com/gasteve) for buffer improvements - [Daniel Cousens](https://github.com/dcousens) for cleanup and merging improvements from bitcoinjs-lib - [Jared Deckard](https://github.com/deckar01) for killing `bigi` as a dependency License ------- MIT [](https://www.npmjs.com/package/esprima) [](https://www.npmjs.com/package/esprima) [](https://travis-ci.org/jquery/esprima) [](https://codecov.io/github/jquery/esprima) **Esprima** ([esprima.org](http://esprima.org), BSD license) is a high performance, standard-compliant [ECMAScript](http://www.ecma-international.org/publications/standards/Ecma-262.htm) parser written in ECMAScript (also popularly known as [JavaScript](https://en.wikipedia.org/wiki/JavaScript)). Esprima is created and maintained by [Ariya Hidayat](https://twitter.com/ariyahidayat), with the help of [many contributors](https://github.com/jquery/esprima/contributors). ### Features - Full support for ECMAScript 2017 ([ECMA-262 8th Edition](http://www.ecma-international.org/publications/standards/Ecma-262.htm)) - Sensible [syntax tree format](https://github.com/estree/estree/blob/master/es5.md) as standardized by [ESTree project](https://github.com/estree/estree) - Experimental support for [JSX](https://facebook.github.io/jsx/), a syntax extension for [React](https://facebook.github.io/react/) - Optional tracking of syntax node location (index-based and line-column) - [Heavily tested](http://esprima.org/test/ci.html) (~1500 [unit tests](https://github.com/jquery/esprima/tree/master/test/fixtures) with [full code coverage](https://codecov.io/github/jquery/esprima)) ### API Esprima can be used to perform [lexical analysis](https://en.wikipedia.org/wiki/Lexical_analysis) (tokenization) or [syntactic analysis](https://en.wikipedia.org/wiki/Parsing) (parsing) of a JavaScript program. A simple example on Node.js REPL: ```javascript > var esprima = require('esprima'); > var program = 'const answer = 42'; > esprima.tokenize(program); [ { type: 'Keyword', value: 'const' }, { type: 'Identifier', value: 'answer' }, { type: 'Punctuator', value: '=' }, { type: 'Numeric', value: '42' } ] > esprima.parseScript(program); { type: 'Program', body: [ { type: 'VariableDeclaration', declarations: [Object], kind: 'const' } ], sourceType: 'script' } ``` For more information, please read the [complete documentation](http://esprima.org/doc). # brace-expansion [Brace expansion](https://www.gnu.org/software/bash/manual/html_node/Brace-Expansion.html), as known from sh/bash, in JavaScript. [](http://travis-ci.org/juliangruber/brace-expansion) [](https://www.npmjs.org/package/brace-expansion) [](https://greenkeeper.io/) [](https://ci.testling.com/juliangruber/brace-expansion) ## Example ```js var expand = require('brace-expansion'); expand('file-{a,b,c}.jpg') // => ['file-a.jpg', 'file-b.jpg', 'file-c.jpg'] expand('-v{,,}') // => ['-v', '-v', '-v'] expand('file{0..2}.jpg') // => ['file0.jpg', 'file1.jpg', 'file2.jpg'] expand('file-{a..c}.jpg') // => ['file-a.jpg', 'file-b.jpg', 'file-c.jpg'] expand('file{2..0}.jpg') // => ['file2.jpg', 'file1.jpg', 'file0.jpg'] expand('file{0..4..2}.jpg') // => ['file0.jpg', 'file2.jpg', 'file4.jpg'] expand('file-{a..e..2}.jpg') // => ['file-a.jpg', 'file-c.jpg', 'file-e.jpg'] expand('file{00..10..5}.jpg') // => ['file00.jpg', 'file05.jpg', 'file10.jpg'] expand('{{A..C},{a..c}}') // => ['A', 'B', 'C', 'a', 'b', 'c'] expand('ppp{,config,oe{,conf}}') // => ['ppp', 'pppconfig', 'pppoe', 'pppoeconf'] ``` ## API ```js var expand = require('brace-expansion'); ``` ### var expanded = expand(str) Return an array of all possible and valid expansions of `str`. If none are found, `[str]` is returned. Valid expansions are: ```js /^(.*,)+(.+)?$/ // {a,b,...} ``` A comma separated list of options, like `{a,b}` or `{a,{b,c}}` or `{,a,}`. ```js /^-?\d+\.\.-?\d+(\.\.-?\d+)?$/ // {x..y[..incr]} ``` A numeric sequence from `x` to `y` inclusive, with optional increment. If `x` or `y` start with a leading `0`, all the numbers will be padded to have equal length. Negative numbers and backwards iteration work too. ```js /^-?\d+\.\.-?\d+(\.\.-?\d+)?$/ // {x..y[..incr]} ``` An alphabetic sequence from `x` to `y` inclusive, with optional increment. `x` and `y` must be exactly one character, and if given, `incr` must be a number. For compatibility reasons, the string `${` is not eligible for brace expansion. ## Installation With [npm](https://npmjs.org) do: ```bash npm install brace-expansion ``` ## Contributors - [Julian Gruber](https://github.com/juliangruber) - [Isaac Z. Schlueter](https://github.com/isaacs) ## Sponsors This module is proudly supported by my [Sponsors](https://github.com/juliangruber/sponsors)! Do you want to support modules like this to improve their quality, stability and weigh in on new features? Then please consider donating to my [Patreon](https://www.patreon.com/juliangruber). Not sure how much of my modules you're using? Try [feross/thanks](https://github.com/feross/thanks)! ## License (MIT) Copyright (c) 2013 Julian Gruber &lt;julian@juliangruber.com&gt; Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # universal-url [![NPM Version][npm-image]][npm-url] [![Build Status][travis-image]][travis-url] [![Dependency Monitor][greenkeeper-image]][greenkeeper-url] > WHATWG [`URL`](https://developer.mozilla.org/en/docs/Web/API/URL) for Node & Browser. * For Node.js versions `>= 8`, the native implementation will be used. * For Node.js versions `< 8`, a [shim](https://npmjs.com/whatwg-url) will be used. * For web browsers without a native implementation, the same shim will be used. ## Installation [Node.js](http://nodejs.org/) `>= 6` is required. To install, type this at the command line: ```shell npm install universal-url ``` ## Usage ```js const {URL, URLSearchParams} = require('universal-url'); const url = new URL('http://domain/'); const params = new URLSearchParams('?param=value'); ``` Global shim: ```js require('universal-url').shim(); const url = new URL('http://domain/'); const params = new URLSearchParams('?param=value'); ``` ## Browserify/etc The bundled file size of this library can be large for a web browser. If this is a problem, try using [universal-url-lite](https://npmjs.com/universal-url-lite) in your build as an alias for this module. [npm-image]: https://img.shields.io/npm/v/universal-url.svg [npm-url]: https://npmjs.org/package/universal-url [travis-image]: https://img.shields.io/travis/stevenvachon/universal-url.svg [travis-url]: https://travis-ci.org/stevenvachon/universal-url [greenkeeper-image]: https://badges.greenkeeper.io/stevenvachon/universal-url.svg [greenkeeper-url]: https://greenkeeper.io/ [](https://www.npmjs.com/package/eslint) [](https://www.npmjs.com/package/eslint) [](https://github.com/eslint/eslint/actions) [](https://app.fossa.io/projects/git%2Bhttps%3A%2F%2Fgithub.com%2Feslint%2Feslint?ref=badge_shield) <br /> [](https://opencollective.com/eslint) [](https://opencollective.com/eslint) [](https://twitter.com/intent/user?screen_name=geteslint) # ESLint [Website](https://eslint.org) | [Configuring](https://eslint.org/docs/user-guide/configuring) | [Rules](https://eslint.org/docs/rules/) | [Contributing](https://eslint.org/docs/developer-guide/contributing) | [Reporting Bugs](https://eslint.org/docs/developer-guide/contributing/reporting-bugs) | [Code of Conduct](https://eslint.org/conduct) | [Twitter](https://twitter.com/geteslint) | [Mailing List](https://groups.google.com/group/eslint) | [Chat Room](https://eslint.org/chat) ESLint is a tool for identifying and reporting on patterns found in ECMAScript/JavaScript code. In many ways, it is similar to JSLint and JSHint with a few exceptions: * ESLint uses [Espree](https://github.com/eslint/espree) for JavaScript parsing. * ESLint uses an AST to evaluate patterns in code. * ESLint is completely pluggable, every single rule is a plugin and you can add more at runtime. ## Table of Contents 1. [Installation and Usage](#installation-and-usage) 2. [Configuration](#configuration) 3. [Code of Conduct](#code-of-conduct) 4. [Filing Issues](#filing-issues) 5. [Frequently Asked Questions](#faq) 6. [Releases](#releases) 7. [Security Policy](#security-policy) 8. [Semantic Versioning Policy](#semantic-versioning-policy) 9. [Stylistic Rule Updates](#stylistic-rule-updates) 10. [License](#license) 11. [Team](#team) 12. [Sponsors](#sponsors) 13. [Technology Sponsors](#technology-sponsors) ## <a name="installation-and-usage"></a>Installation and Usage Prerequisites: [Node.js](https://nodejs.org/) (`^10.12.0`, or `>=12.0.0`) built with SSL support. (If you are using an official Node.js distribution, SSL is always built in.) You can install ESLint using npm: ``` $ npm install eslint --save-dev ``` You should then set up a configuration file: ``` $ ./node_modules/.bin/eslint --init ``` After that, you can run ESLint on any file or directory like this: ``` $ ./node_modules/.bin/eslint yourfile.js ``` ## <a name="configuration"></a>Configuration After running `eslint --init`, you'll have a `.eslintrc` file in your directory. In it, you'll see some rules configured like this: ```json { "rules": { "semi": ["error", "always"], "quotes": ["error", "double"] } } ``` The names `"semi"` and `"quotes"` are the names of [rules](https://eslint.org/docs/rules) in ESLint. The first value is the error level of the rule and can be one of these values: * `"off"` or `0` - turn the rule off * `"warn"` or `1` - turn the rule on as a warning (doesn't affect exit code) * `"error"` or `2` - turn the rule on as an error (exit code will be 1) The three error levels allow you fine-grained control over how ESLint applies rules (for more configuration options and details, see the [configuration docs](https://eslint.org/docs/user-guide/configuring)). ## <a name="code-of-conduct"></a>Code of Conduct ESLint adheres to the [JS Foundation Code of Conduct](https://eslint.org/conduct). ## <a name="filing-issues"></a>Filing Issues Before filing an issue, please be sure to read the guidelines for what you're reporting: * [Bug Report](https://eslint.org/docs/developer-guide/contributing/reporting-bugs) * [Propose a New Rule](https://eslint.org/docs/developer-guide/contributing/new-rules) * [Proposing a Rule Change](https://eslint.org/docs/developer-guide/contributing/rule-changes) * [Request a Change](https://eslint.org/docs/developer-guide/contributing/changes) ## <a name="faq"></a>Frequently Asked Questions ### I'm using JSCS, should I migrate to ESLint? Yes. [JSCS has reached end of life](https://eslint.org/blog/2016/07/jscs-end-of-life) and is no longer supported. We have prepared a [migration guide](https://eslint.org/docs/user-guide/migrating-from-jscs) to help you convert your JSCS settings to an ESLint configuration. We are now at or near 100% compatibility with JSCS. If you try ESLint and believe we are not yet compatible with a JSCS rule/configuration, please create an issue (mentioning that it is a JSCS compatibility issue) and we will evaluate it as per our normal process. ### Does Prettier replace ESLint? No, ESLint does both traditional linting (looking for problematic patterns) and style checking (enforcement of conventions). You can use ESLint for everything, or you can combine both using Prettier to format your code and ESLint to catch possible errors. ### Why can't ESLint find my plugins? * Make sure your plugins (and ESLint) are both in your project's `package.json` as devDependencies (or dependencies, if your project uses ESLint at runtime). * Make sure you have run `npm install` and all your dependencies are installed. * Make sure your plugins' peerDependencies have been installed as well. You can use `npm view eslint-plugin-myplugin peerDependencies` to see what peer dependencies `eslint-plugin-myplugin` has. ### Does ESLint support JSX? Yes, ESLint natively supports parsing JSX syntax (this must be enabled in [configuration](https://eslint.org/docs/user-guide/configuring)). Please note that supporting JSX syntax *is not* the same as supporting React. React applies specific semantics to JSX syntax that ESLint doesn't recognize. We recommend using [eslint-plugin-react](https://www.npmjs.com/package/eslint-plugin-react) if you are using React and want React semantics. ### What ECMAScript versions does ESLint support? ESLint has full support for ECMAScript 3, 5 (default), 2015, 2016, 2017, 2018, 2019, and 2020. You can set your desired ECMAScript syntax (and other settings, like global variables or your target environments) through [configuration](https://eslint.org/docs/user-guide/configuring). ### What about experimental features? ESLint's parser only officially supports the latest final ECMAScript standard. We will make changes to core rules in order to avoid crashes on stage 3 ECMAScript syntax proposals (as long as they are implemented using the correct experimental ESTree syntax). We may make changes to core rules to better work with language extensions (such as JSX, Flow, and TypeScript) on a case-by-case basis. In other cases (including if rules need to warn on more or fewer cases due to new syntax, rather than just not crashing), we recommend you use other parsers and/or rule plugins. If you are using Babel, you can use the [babel-eslint](https://github.com/babel/babel-eslint) parser and [eslint-plugin-babel](https://github.com/babel/eslint-plugin-babel) to use any option available in Babel. Once a language feature has been adopted into the ECMAScript standard (stage 4 according to the [TC39 process](https://tc39.github.io/process-document/)), we will accept issues and pull requests related to the new feature, subject to our [contributing guidelines](https://eslint.org/docs/developer-guide/contributing). Until then, please use the appropriate parser and plugin(s) for your experimental feature. ### Where to ask for help? Join our [Mailing List](https://groups.google.com/group/eslint) or [Chatroom](https://eslint.org/chat). ### Why doesn't ESLint lock dependency versions? Lock files like `package-lock.json` are helpful for deployed applications. They ensure that dependencies are consistent between environments and across deployments. Packages like `eslint` that get published to the npm registry do not include lock files. `npm install eslint` as a user will respect version constraints in ESLint's `package.json`. ESLint and its dependencies will be included in the user's lock file if one exists, but ESLint's own lock file would not be used. We intentionally don't lock dependency versions so that we have the latest compatible dependency versions in development and CI that our users get when installing ESLint in a project. The Twilio blog has a [deeper dive](https://www.twilio.com/blog/lockfiles-nodejs) to learn more. ## <a name="releases"></a>Releases We have scheduled releases every two weeks on Friday or Saturday. You can follow a [release issue](https://github.com/eslint/eslint/issues?q=is%3Aopen+is%3Aissue+label%3Arelease) for updates about the scheduling of any particular release. ## <a name="security-policy"></a>Security Policy ESLint takes security seriously. We work hard to ensure that ESLint is safe for everyone and that security issues are addressed quickly and responsibly. Read the full [security policy](https://github.com/eslint/.github/blob/master/SECURITY.md). ## <a name="semantic-versioning-policy"></a>Semantic Versioning Policy ESLint follows [semantic versioning](https://semver.org). However, due to the nature of ESLint as a code quality tool, it's not always clear when a minor or major version bump occurs. To help clarify this for everyone, we've defined the following semantic versioning policy for ESLint: * Patch release (intended to not break your lint build) * A bug fix in a rule that results in ESLint reporting fewer linting errors. * A bug fix to the CLI or core (including formatters). * Improvements to documentation. * Non-user-facing changes such as refactoring code, adding, deleting, or modifying tests, and increasing test coverage. * Re-releasing after a failed release (i.e., publishing a release that doesn't work for anyone). * Minor release (might break your lint build) * A bug fix in a rule that results in ESLint reporting more linting errors. * A new rule is created. * A new option to an existing rule that does not result in ESLint reporting more linting errors by default. * A new addition to an existing rule to support a newly-added language feature (within the last 12 months) that will result in ESLint reporting more linting errors by default. * An existing rule is deprecated. * A new CLI capability is created. * New capabilities to the public API are added (new classes, new methods, new arguments to existing methods, etc.). * A new formatter is created. * `eslint:recommended` is updated and will result in strictly fewer linting errors (e.g., rule removals). * Major release (likely to break your lint build) * `eslint:recommended` is updated and may result in new linting errors (e.g., rule additions, most rule option updates). * A new option to an existing rule that results in ESLint reporting more linting errors by default. * An existing formatter is removed. * Part of the public API is removed or changed in an incompatible way. The public API includes: * Rule schemas * Configuration schema * Command-line options * Node.js API * Rule, formatter, parser, plugin APIs According to our policy, any minor update may report more linting errors than the previous release (ex: from a bug fix). As such, we recommend using the tilde (`~`) in `package.json` e.g. `"eslint": "~3.1.0"` to guarantee the results of your builds. ## <a name="stylistic-rule-updates"></a>Stylistic Rule Updates Stylistic rules are frozen according to [our policy](https://eslint.org/blog/2020/05/changes-to-rules-policies) on how we evaluate new rules and rule changes. This means: * **Bug fixes**: We will still fix bugs in stylistic rules. * **New ECMAScript features**: We will also make sure stylistic rules are compatible with new ECMAScript features. * **New options**: We will **not** add any new options to stylistic rules unless an option is the only way to fix a bug or support a newly-added ECMAScript feature. ## <a name="license"></a>License [](https://app.fossa.io/projects/git%2Bhttps%3A%2F%2Fgithub.com%2Feslint%2Feslint?ref=badge_large) ## <a name="team"></a>Team These folks keep the project moving and are resources for help. <!-- NOTE: This section is autogenerated. Do not manually edit.--> <!--teamstart--> ### Technical Steering Committee (TSC) The people who manage releases, review feature requests, and meet regularly to ensure ESLint is properly maintained. <table><tbody><tr><td align="center" valign="top" width="11%"> <a href="https://github.com/nzakas"> <img src="https://github.com/nzakas.png?s=75" width="75" height="75"><br /> Nicholas C. Zakas </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/btmills"> <img src="https://github.com/btmills.png?s=75" width="75" height="75"><br /> Brandon Mills </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/mdjermanovic"> <img src="https://github.com/mdjermanovic.png?s=75" width="75" height="75"><br /> Milos Djermanovic </a> </td></tr></tbody></table> ### Reviewers The people who review and implement new features. <table><tbody><tr><td align="center" valign="top" width="11%"> <a href="https://github.com/mysticatea"> <img src="https://github.com/mysticatea.png?s=75" width="75" height="75"><br /> Toru Nagashima </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/aladdin-add"> <img src="https://github.com/aladdin-add.png?s=75" width="75" height="75"><br /> 薛定谔的猫 </a> </td></tr></tbody></table> ### Committers The people who review and fix bugs and help triage issues. <table><tbody><tr><td align="center" valign="top" width="11%"> <a href="https://github.com/brettz9"> <img src="https://github.com/brettz9.png?s=75" width="75" height="75"><br /> Brett Zamir </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/bmish"> <img src="https://github.com/bmish.png?s=75" width="75" height="75"><br /> Bryan Mishkin </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/g-plane"> <img src="https://github.com/g-plane.png?s=75" width="75" height="75"><br /> Pig Fang </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/anikethsaha"> <img src="https://github.com/anikethsaha.png?s=75" width="75" height="75"><br /> Anix </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/yeonjuan"> <img src="https://github.com/yeonjuan.png?s=75" width="75" height="75"><br /> YeonJuan </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/snitin315"> <img src="https://github.com/snitin315.png?s=75" width="75" height="75"><br /> Nitin Kumar </a> </td></tr></tbody></table> <!--teamend--> ## <a name="sponsors"></a>Sponsors The following companies, organizations, and individuals support ESLint's ongoing maintenance and development. [Become a Sponsor](https://opencollective.com/eslint) to get your logo on our README and website. <!-- NOTE: This section is autogenerated. Do not manually edit.--> <!--sponsorsstart--> <h3>Platinum Sponsors</h3> <p><a href="https://automattic.com"><img src="https://images.opencollective.com/photomatt/d0ef3e1/logo.png" alt="Automattic" height="undefined"></a></p><h3>Gold Sponsors</h3> <p><a href="https://nx.dev"><img src="https://images.opencollective.com/nx/0efbe42/logo.png" alt="Nx (by Nrwl)" height="96"></a> <a href="https://google.com/chrome"><img src="https://images.opencollective.com/chrome/dc55bd4/logo.png" alt="Chrome's Web Framework & Tools Performance Fund" height="96"></a> <a href="https://www.salesforce.com"><img src="https://images.opencollective.com/salesforce/ca8f997/logo.png" alt="Salesforce" height="96"></a> <a href="https://www.airbnb.com/"><img src="https://images.opencollective.com/airbnb/d327d66/logo.png" alt="Airbnb" height="96"></a> <a href="https://coinbase.com"><img src="https://avatars.githubusercontent.com/u/1885080?v=4" alt="Coinbase" height="96"></a> <a href="https://substack.com/"><img src="https://avatars.githubusercontent.com/u/53023767?v=4" alt="Substack" height="96"></a></p><h3>Silver Sponsors</h3> <p><a href="https://retool.com/"><img src="https://images.opencollective.com/retool/98ea68e/logo.png" alt="Retool" height="64"></a> <a href="https://liftoff.io/"><img src="https://images.opencollective.com/liftoff/5c4fa84/logo.png" alt="Liftoff" height="64"></a></p><h3>Bronze Sponsors</h3> <p><a href="https://www.crosswordsolver.org/anagram-solver/"><img src="https://images.opencollective.com/anagram-solver/2666271/logo.png" alt="Anagram Solver" height="32"></a> <a href="null"><img src="https://images.opencollective.com/bugsnag-stability-monitoring/c2cef36/logo.png" alt="Bugsnag Stability Monitoring" height="32"></a> <a href="https://mixpanel.com"><img src="https://images.opencollective.com/mixpanel/cd682f7/logo.png" alt="Mixpanel" height="32"></a> <a href="https://www.vpsserver.com"><img src="https://images.opencollective.com/vpsservercom/logo.png" alt="VPS Server" height="32"></a> <a href="https://icons8.com"><img src="https://images.opencollective.com/icons8/7fa1641/logo.png" alt="Icons8: free icons, photos, illustrations, and music" height="32"></a> <a href="https://discord.com"><img src="https://images.opencollective.com/discordapp/f9645d9/logo.png" alt="Discord" height="32"></a> <a href="https://themeisle.com"><img src="https://images.opencollective.com/themeisle/d5592fe/logo.png" alt="ThemeIsle" height="32"></a> <a href="https://www.firesticktricks.com"><img src="https://images.opencollective.com/fire-stick-tricks/b8fbe2c/logo.png" alt="Fire Stick Tricks" height="32"></a> <a href="https://www.practiceignition.com"><img src="https://avatars.githubusercontent.com/u/5753491?v=4" alt="Practice Ignition" height="32"></a></p> <!--sponsorsend--> ## <a name="technology-sponsors"></a>Technology Sponsors * Site search ([eslint.org](https://eslint.org)) is sponsored by [Algolia](https://www.algolia.com) * Hosting for ([eslint.org](https://eslint.org)) is sponsored by [Netlify](https://www.netlify.com) * Password management is sponsored by [1Password](https://www.1password.com) # isexe Minimal module to check if a file is executable, and a normal file. Uses `fs.stat` and tests against the `PATHEXT` environment variable on Windows. ## USAGE ```javascript var isexe = require('isexe') isexe('some-file-name', function (err, isExe) { if (err) { console.error('probably file does not exist or something', err) } else if (isExe) { console.error('this thing can be run') } else { console.error('cannot be run') } }) // same thing but synchronous, throws errors var isExe = isexe.sync('some-file-name') // treat errors as just "not executable" isexe('maybe-missing-file', { ignoreErrors: true }, callback) var isExe = isexe.sync('maybe-missing-file', { ignoreErrors: true }) ``` ## API ### `isexe(path, [options], [callback])` Check if the path is executable. If no callback provided, and a global `Promise` object is available, then a Promise will be returned. Will raise whatever errors may be raised by `fs.stat`, unless `options.ignoreErrors` is set to true. ### `isexe.sync(path, [options])` Same as `isexe` but returns the value and throws any errors raised. ### Options * `ignoreErrors` Treat all errors as "no, this is not executable", but don't raise them. * `uid` Number to use as the user id * `gid` Number to use as the group id * `pathExt` List of path extensions to use instead of `PATHEXT` environment variable on Windows. # json-schema-traverse Traverse JSON Schema passing each schema object to callback [](https://github.com/epoberezkin/json-schema-traverse/actions?query=workflow%3Abuild) [](https://www.npmjs.com/package/json-schema-traverse) [](https://coveralls.io/github/epoberezkin/json-schema-traverse?branch=master) ## Install ``` npm install json-schema-traverse ``` ## Usage ```javascript const traverse = require('json-schema-traverse'); const schema = { properties: { foo: {type: 'string'}, bar: {type: 'integer'} } }; traverse(schema, {cb}); // cb is called 3 times with: // 1. root schema // 2. {type: 'string'} // 3. {type: 'integer'} // Or: traverse(schema, {cb: {pre, post}}); // pre is called 3 times with: // 1. root schema // 2. {type: 'string'} // 3. {type: 'integer'} // // post is called 3 times with: // 1. {type: 'string'} // 2. {type: 'integer'} // 3. root schema ``` Callback function `cb` is called for each schema object (not including draft-06 boolean schemas), including the root schema, in pre-order traversal. Schema references ($ref) are not resolved, they are passed as is. Alternatively, you can pass a `{pre, post}` object as `cb`, and then `pre` will be called before traversing child elements, and `post` will be called after all child elements have been traversed. Callback is passed these parameters: - _schema_: the current schema object - _JSON pointer_: from the root schema to the current schema object - _root schema_: the schema passed to `traverse` object - _parent JSON pointer_: from the root schema to the parent schema object (see below) - _parent keyword_: the keyword inside which this schema appears (e.g. `properties`, `anyOf`, etc.) - _parent schema_: not necessarily parent object/array; in the example above the parent schema for `{type: 'string'}` is the root schema - _index/property_: index or property name in the array/object containing multiple schemas; in the example above for `{type: 'string'}` the property name is `'foo'` ## Traverse objects in all unknown keywords ```javascript const traverse = require('json-schema-traverse'); const schema = { mySchema: { minimum: 1, maximum: 2 } }; traverse(schema, {allKeys: true, cb}); // cb is called 2 times with: // 1. root schema // 2. mySchema ``` Without option `allKeys: true` callback will be called only with root schema. ## Enterprise support json-schema-traverse package is a part of [Tidelift enterprise subscription](https://tidelift.com/subscription/pkg/npm-json-schema-traverse?utm_source=npm-json-schema-traverse&utm_medium=referral&utm_campaign=enterprise&utm_term=repo) - it provides a centralised commercial support to open-source software users, in addition to the support provided by software maintainers. ## Security contact To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. Please do NOT report security vulnerability via GitHub issues. ## License [MIT](https://github.com/epoberezkin/json-schema-traverse/blob/master/LICENSE) # ShellJS - Unix shell commands for Node.js [](https://travis-ci.org/shelljs/shelljs) [](https://ci.appveyor.com/project/shelljs/shelljs/branch/master) [](https://codecov.io/gh/shelljs/shelljs) [](https://www.npmjs.com/package/shelljs) [](https://www.npmjs.com/package/shelljs) ShellJS is a portable **(Windows/Linux/OS X)** implementation of Unix shell commands on top of the Node.js API. You can use it to eliminate your shell script's dependency on Unix while still keeping its familiar and powerful commands. You can also install it globally so you can run it from outside Node projects - say goodbye to those gnarly Bash scripts! ShellJS is proudly tested on every node release since `v4`! The project is [unit-tested](http://travis-ci.org/shelljs/shelljs) and battle-tested in projects like: + [Firebug](http://getfirebug.com/) - Firefox's infamous debugger + [JSHint](http://jshint.com) & [ESLint](http://eslint.org/) - popular JavaScript linters + [Zepto](http://zeptojs.com) - jQuery-compatible JavaScript library for modern browsers + [Yeoman](http://yeoman.io/) - Web application stack and development tool + [Deployd.com](http://deployd.com) - Open source PaaS for quick API backend generation + And [many more](https://npmjs.org/browse/depended/shelljs). If you have feedback, suggestions, or need help, feel free to post in our [issue tracker](https://github.com/shelljs/shelljs/issues). Think ShellJS is cool? Check out some related projects in our [Wiki page](https://github.com/shelljs/shelljs/wiki)! Upgrading from an older version? Check out our [breaking changes](https://github.com/shelljs/shelljs/wiki/Breaking-Changes) page to see what changes to watch out for while upgrading. ## Command line use If you just want cross platform UNIX commands, checkout our new project [shelljs/shx](https://github.com/shelljs/shx), a utility to expose `shelljs` to the command line. For example: ``` $ shx mkdir -p foo $ shx touch foo/bar.txt $ shx rm -rf foo ``` ## Plugin API ShellJS now supports third-party plugins! You can learn more about using plugins and writing your own ShellJS commands in [the wiki](https://github.com/shelljs/shelljs/wiki/Using-ShellJS-Plugins). ## A quick note about the docs For documentation on all the latest features, check out our [README](https://github.com/shelljs/shelljs). To read docs that are consistent with the latest release, check out [the npm page](https://www.npmjs.com/package/shelljs) or [shelljs.org](http://documentup.com/shelljs/shelljs). ## Installing Via npm: ```bash $ npm install [-g] shelljs ``` ## Examples ```javascript var shell = require('shelljs'); if (!shell.which('git')) { shell.echo('Sorry, this script requires git'); shell.exit(1); } // Copy files to release dir shell.rm('-rf', 'out/Release'); shell.cp('-R', 'stuff/', 'out/Release'); // Replace macros in each .js file shell.cd('lib'); shell.ls('*.js').forEach(function (file) { shell.sed('-i', 'BUILD_VERSION', 'v0.1.2', file); shell.sed('-i', /^.*REMOVE_THIS_LINE.*$/, '', file); shell.sed('-i', /.*REPLACE_LINE_WITH_MACRO.*\n/, shell.cat('macro.js'), file); }); shell.cd('..'); // Run external tool synchronously if (shell.exec('git commit -am "Auto-commit"').code !== 0) { shell.echo('Error: Git commit failed'); shell.exit(1); } ``` ## Exclude options If you need to pass a parameter that looks like an option, you can do so like: ```js shell.grep('--', '-v', 'path/to/file'); // Search for "-v", no grep options shell.cp('-R', '-dir', 'outdir'); // If already using an option, you're done ``` ## Global vs. Local We no longer recommend using a global-import for ShellJS (i.e. `require('shelljs/global')`). While still supported for convenience, this pollutes the global namespace, and should therefore only be used with caution. Instead, we recommend a local import (standard for npm packages): ```javascript var shell = require('shelljs'); shell.echo('hello world'); ``` <!-- DO NOT MODIFY BEYOND THIS POINT - IT'S AUTOMATICALLY GENERATED --> ## Command reference All commands run synchronously, unless otherwise stated. All commands accept standard bash globbing characters (`*`, `?`, etc.), compatible with the [node `glob` module](https://github.com/isaacs/node-glob). For less-commonly used commands and features, please check out our [wiki page](https://github.com/shelljs/shelljs/wiki). ### cat([options,] file [, file ...]) ### cat([options,] file_array) Available options: + `-n`: number all output lines Examples: ```javascript var str = cat('file*.txt'); var str = cat('file1', 'file2'); var str = cat(['file1', 'file2']); // same as above ``` Returns a string containing the given file, or a concatenated string containing the files if more than one file is given (a new line character is introduced between each file). ### cd([dir]) Changes to directory `dir` for the duration of the script. Changes to home directory if no argument is supplied. ### chmod([options,] octal_mode || octal_string, file) ### chmod([options,] symbolic_mode, file) Available options: + `-v`: output a diagnostic for every file processed + `-c`: like verbose, but report only when a change is made + `-R`: change files and directories recursively Examples: ```javascript chmod(755, '/Users/brandon'); chmod('755', '/Users/brandon'); // same as above chmod('u+x', '/Users/brandon'); chmod('-R', 'a-w', '/Users/brandon'); ``` Alters the permissions of a file or directory by either specifying the absolute permissions in octal form or expressing the changes in symbols. This command tries to mimic the POSIX behavior as much as possible. Notable exceptions: + In symbolic modes, `a-r` and `-r` are identical. No consideration is given to the `umask`. + There is no "quiet" option, since default behavior is to run silent. ### cp([options,] source [, source ...], dest) ### cp([options,] source_array, dest) Available options: + `-f`: force (default behavior) + `-n`: no-clobber + `-u`: only copy if `source` is newer than `dest` + `-r`, `-R`: recursive + `-L`: follow symlinks + `-P`: don't follow symlinks Examples: ```javascript cp('file1', 'dir1'); cp('-R', 'path/to/dir/', '~/newCopy/'); cp('-Rf', '/tmp/*', '/usr/local/*', '/home/tmp'); cp('-Rf', ['/tmp/*', '/usr/local/*'], '/home/tmp'); // same as above ``` Copies files. ### pushd([options,] [dir | '-N' | '+N']) Available options: + `-n`: Suppresses the normal change of directory when adding directories to the stack, so that only the stack is manipulated. + `-q`: Supresses output to the console. Arguments: + `dir`: Sets the current working directory to the top of the stack, then executes the equivalent of `cd dir`. + `+N`: Brings the Nth directory (counting from the left of the list printed by dirs, starting with zero) to the top of the list by rotating the stack. + `-N`: Brings the Nth directory (counting from the right of the list printed by dirs, starting with zero) to the top of the list by rotating the stack. Examples: ```javascript // process.cwd() === '/usr' pushd('/etc'); // Returns /etc /usr pushd('+1'); // Returns /usr /etc ``` Save the current directory on the top of the directory stack and then `cd` to `dir`. With no arguments, `pushd` exchanges the top two directories. Returns an array of paths in the stack. ### popd([options,] ['-N' | '+N']) Available options: + `-n`: Suppress the normal directory change when removing directories from the stack, so that only the stack is manipulated. + `-q`: Supresses output to the console. Arguments: + `+N`: Removes the Nth directory (counting from the left of the list printed by dirs), starting with zero. + `-N`: Removes the Nth directory (counting from the right of the list printed by dirs), starting with zero. Examples: ```javascript echo(process.cwd()); // '/usr' pushd('/etc'); // '/etc /usr' echo(process.cwd()); // '/etc' popd(); // '/usr' echo(process.cwd()); // '/usr' ``` When no arguments are given, `popd` removes the top directory from the stack and performs a `cd` to the new top directory. The elements are numbered from 0, starting at the first directory listed with dirs (i.e., `popd` is equivalent to `popd +0`). Returns an array of paths in the stack. ### dirs([options | '+N' | '-N']) Available options: + `-c`: Clears the directory stack by deleting all of the elements. + `-q`: Supresses output to the console. Arguments: + `+N`: Displays the Nth directory (counting from the left of the list printed by dirs when invoked without options), starting with zero. + `-N`: Displays the Nth directory (counting from the right of the list printed by dirs when invoked without options), starting with zero. Display the list of currently remembered directories. Returns an array of paths in the stack, or a single path if `+N` or `-N` was specified. See also: `pushd`, `popd` ### echo([options,] string [, string ...]) Available options: + `-e`: interpret backslash escapes (default) + `-n`: remove trailing newline from output Examples: ```javascript echo('hello world'); var str = echo('hello world'); echo('-n', 'no newline at end'); ``` Prints `string` to stdout, and returns string with additional utility methods like `.to()`. ### exec(command [, options] [, callback]) Available options: + `async`: Asynchronous execution. If a callback is provided, it will be set to `true`, regardless of the passed value (default: `false`). + `silent`: Do not echo program output to console (default: `false`). + `encoding`: Character encoding to use. Affects the values returned to stdout and stderr, and what is written to stdout and stderr when not in silent mode (default: `'utf8'`). + and any option available to Node.js's [`child_process.exec()`](https://nodejs.org/api/child_process.html#child_process_child_process_exec_command_options_callback) Examples: ```javascript var version = exec('node --version', {silent:true}).stdout; var child = exec('some_long_running_process', {async:true}); child.stdout.on('data', function(data) { /* ... do something with data ... */ }); exec('some_long_running_process', function(code, stdout, stderr) { console.log('Exit code:', code); console.log('Program output:', stdout); console.log('Program stderr:', stderr); }); ``` Executes the given `command` _synchronously_, unless otherwise specified. When in synchronous mode, this returns a `ShellString` (compatible with ShellJS v0.6.x, which returns an object of the form `{ code:..., stdout:... , stderr:... }`). Otherwise, this returns the child process object, and the `callback` receives the arguments `(code, stdout, stderr)`. Not seeing the behavior you want? `exec()` runs everything through `sh` by default (or `cmd.exe` on Windows), which differs from `bash`. If you need bash-specific behavior, try out the `{shell: 'path/to/bash'}` option. ### find(path [, path ...]) ### find(path_array) Examples: ```javascript find('src', 'lib'); find(['src', 'lib']); // same as above find('.').filter(function(file) { return file.match(/\.js$/); }); ``` Returns array of all files (however deep) in the given paths. The main difference from `ls('-R', path)` is that the resulting file names include the base directories (e.g., `lib/resources/file1` instead of just `file1`). ### grep([options,] regex_filter, file [, file ...]) ### grep([options,] regex_filter, file_array) Available options: + `-v`: Invert `regex_filter` (only print non-matching lines). + `-l`: Print only filenames of matching files. + `-i`: Ignore case. Examples: ```javascript grep('-v', 'GLOBAL_VARIABLE', '*.js'); grep('GLOBAL_VARIABLE', '*.js'); ``` Reads input string from given files and returns a string containing all lines of the file that match the given `regex_filter`. ### head([{'-n': \<num\>},] file [, file ...]) ### head([{'-n': \<num\>},] file_array) Available options: + `-n <num>`: Show the first `<num>` lines of the files Examples: ```javascript var str = head({'-n': 1}, 'file*.txt'); var str = head('file1', 'file2'); var str = head(['file1', 'file2']); // same as above ``` Read the start of a file. ### ln([options,] source, dest) Available options: + `-s`: symlink + `-f`: force Examples: ```javascript ln('file', 'newlink'); ln('-sf', 'file', 'existing'); ``` Links `source` to `dest`. Use `-f` to force the link, should `dest` already exist. ### ls([options,] [path, ...]) ### ls([options,] path_array) Available options: + `-R`: recursive + `-A`: all files (include files beginning with `.`, except for `.` and `..`) + `-L`: follow symlinks + `-d`: list directories themselves, not their contents + `-l`: list objects representing each file, each with fields containing `ls -l` output fields. See [`fs.Stats`](https://nodejs.org/api/fs.html#fs_class_fs_stats) for more info Examples: ```javascript ls('projs/*.js'); ls('-R', '/users/me', '/tmp'); ls('-R', ['/users/me', '/tmp']); // same as above ls('-l', 'file.txt'); // { name: 'file.txt', mode: 33188, nlink: 1, ...} ``` Returns array of files in the given `path`, or files in the current directory if no `path` is provided. ### mkdir([options,] dir [, dir ...]) ### mkdir([options,] dir_array) Available options: + `-p`: full path (and create intermediate directories, if necessary) Examples: ```javascript mkdir('-p', '/tmp/a/b/c/d', '/tmp/e/f/g'); mkdir('-p', ['/tmp/a/b/c/d', '/tmp/e/f/g']); // same as above ``` Creates directories. ### mv([options ,] source [, source ...], dest') ### mv([options ,] source_array, dest') Available options: + `-f`: force (default behavior) + `-n`: no-clobber Examples: ```javascript mv('-n', 'file', 'dir/'); mv('file1', 'file2', 'dir/'); mv(['file1', 'file2'], 'dir/'); // same as above ``` Moves `source` file(s) to `dest`. ### pwd() Returns the current directory. ### rm([options,] file [, file ...]) ### rm([options,] file_array) Available options: + `-f`: force + `-r, -R`: recursive Examples: ```javascript rm('-rf', '/tmp/*'); rm('some_file.txt', 'another_file.txt'); rm(['some_file.txt', 'another_file.txt']); // same as above ``` Removes files. ### sed([options,] search_regex, replacement, file [, file ...]) ### sed([options,] search_regex, replacement, file_array) Available options: + `-i`: Replace contents of `file` in-place. _Note that no backups will be created!_ Examples: ```javascript sed('-i', 'PROGRAM_VERSION', 'v0.1.3', 'source.js'); sed(/.*DELETE_THIS_LINE.*\n/, '', 'source.js'); ``` Reads an input string from `file`s, and performs a JavaScript `replace()` on the input using the given `search_regex` and `replacement` string or function. Returns the new string after replacement. Note: Like unix `sed`, ShellJS `sed` supports capture groups. Capture groups are specified using the `$n` syntax: ```javascript sed(/(\w+)\s(\w+)/, '$2, $1', 'file.txt'); ``` ### set(options) Available options: + `+/-e`: exit upon error (`config.fatal`) + `+/-v`: verbose: show all commands (`config.verbose`) + `+/-f`: disable filename expansion (globbing) Examples: ```javascript set('-e'); // exit upon first error set('+e'); // this undoes a "set('-e')" ``` Sets global configuration variables. ### sort([options,] file [, file ...]) ### sort([options,] file_array) Available options: + `-r`: Reverse the results + `-n`: Compare according to numerical value Examples: ```javascript sort('foo.txt', 'bar.txt'); sort('-r', 'foo.txt'); ``` Return the contents of the `file`s, sorted line-by-line. Sorting multiple files mixes their content (just as unix `sort` does). ### tail([{'-n': \<num\>},] file [, file ...]) ### tail([{'-n': \<num\>},] file_array) Available options: + `-n <num>`: Show the last `<num>` lines of `file`s Examples: ```javascript var str = tail({'-n': 1}, 'file*.txt'); var str = tail('file1', 'file2'); var str = tail(['file1', 'file2']); // same as above ``` Read the end of a `file`. ### tempdir() Examples: ```javascript var tmp = tempdir(); // "/tmp" for most *nix platforms ``` Searches and returns string containing a writeable, platform-dependent temporary directory. Follows Python's [tempfile algorithm](http://docs.python.org/library/tempfile.html#tempfile.tempdir). ### test(expression) Available expression primaries: + `'-b', 'path'`: true if path is a block device + `'-c', 'path'`: true if path is a character device + `'-d', 'path'`: true if path is a directory + `'-e', 'path'`: true if path exists + `'-f', 'path'`: true if path is a regular file + `'-L', 'path'`: true if path is a symbolic link + `'-p', 'path'`: true if path is a pipe (FIFO) + `'-S', 'path'`: true if path is a socket Examples: ```javascript if (test('-d', path)) { /* do something with dir */ }; if (!test('-f', path)) continue; // skip if it's a regular file ``` Evaluates `expression` using the available primaries and returns corresponding value. ### ShellString.prototype.to(file) Examples: ```javascript cat('input.txt').to('output.txt'); ``` Analogous to the redirection operator `>` in Unix, but works with `ShellStrings` (such as those returned by `cat`, `grep`, etc.). _Like Unix redirections, `to()` will overwrite any existing file!_ ### ShellString.prototype.toEnd(file) Examples: ```javascript cat('input.txt').toEnd('output.txt'); ``` Analogous to the redirect-and-append operator `>>` in Unix, but works with `ShellStrings` (such as those returned by `cat`, `grep`, etc.). ### touch([options,] file [, file ...]) ### touch([options,] file_array) Available options: + `-a`: Change only the access time + `-c`: Do not create any files + `-m`: Change only the modification time + `-d DATE`: Parse `DATE` and use it instead of current time + `-r FILE`: Use `FILE`'s times instead of current time Examples: ```javascript touch('source.js'); touch('-c', '/path/to/some/dir/source.js'); touch({ '-r': FILE }, '/path/to/some/dir/source.js'); ``` Update the access and modification times of each `FILE` to the current time. A `FILE` argument that does not exist is created empty, unless `-c` is supplied. This is a partial implementation of [`touch(1)`](http://linux.die.net/man/1/touch). ### uniq([options,] [input, [output]]) Available options: + `-i`: Ignore case while comparing + `-c`: Prefix lines by the number of occurrences + `-d`: Only print duplicate lines, one for each group of identical lines Examples: ```javascript uniq('foo.txt'); uniq('-i', 'foo.txt'); uniq('-cd', 'foo.txt', 'bar.txt'); ``` Filter adjacent matching lines from `input`. ### which(command) Examples: ```javascript var nodeExec = which('node'); ``` Searches for `command` in the system's `PATH`. On Windows, this uses the `PATHEXT` variable to append the extension if it's not already executable. Returns string containing the absolute path to `command`. ### exit(code) Exits the current process with the given exit `code`. ### error() Tests if error occurred in the last command. Returns a truthy value if an error returned, or a falsy value otherwise. **Note**: do not rely on the return value to be an error message. If you need the last error message, use the `.stderr` attribute from the last command's return value instead. ### ShellString(str) Examples: ```javascript var foo = ShellString('hello world'); ``` Turns a regular string into a string-like object similar to what each command returns. This has special methods, like `.to()` and `.toEnd()`. ### env['VAR_NAME'] Object containing environment variables (both getter and setter). Shortcut to `process.env`. ### Pipes Examples: ```javascript grep('foo', 'file1.txt', 'file2.txt').sed(/o/g, 'a').to('output.txt'); echo('files with o\'s in the name:\n' + ls().grep('o')); cat('test.js').exec('node'); // pipe to exec() call ``` Commands can send their output to another command in a pipe-like fashion. `sed`, `grep`, `cat`, `exec`, `to`, and `toEnd` can appear on the right-hand side of a pipe. Pipes can be chained. ## Configuration ### config.silent Example: ```javascript var sh = require('shelljs'); var silentState = sh.config.silent; // save old silent state sh.config.silent = true; /* ... */ sh.config.silent = silentState; // restore old silent state ``` Suppresses all command output if `true`, except for `echo()` calls. Default is `false`. ### config.fatal Example: ```javascript require('shelljs/global'); config.fatal = true; // or set('-e'); cp('this_file_does_not_exist', '/dev/null'); // throws Error here /* more commands... */ ``` If `true`, the script will throw a Javascript error when any shell.js command encounters an error. Default is `false`. This is analogous to Bash's `set -e`. ### config.verbose Example: ```javascript config.verbose = true; // or set('-v'); cd('dir/'); rm('-rf', 'foo.txt', 'bar.txt'); exec('echo hello'); ``` Will print each command as follows: ``` cd dir/ rm -rf foo.txt bar.txt exec echo hello ``` ### config.globOptions Example: ```javascript config.globOptions = {nodir: true}; ``` Use this value for calls to `glob.sync()` instead of the default options. ### config.reset() Example: ```javascript var shell = require('shelljs'); // Make changes to shell.config, and do stuff... /* ... */ shell.config.reset(); // reset to original state // Do more stuff, but with original settings /* ... */ ``` Reset `shell.config` to the defaults: ```javascript { fatal: false, globOptions: {}, maxdepth: 255, noglob: false, silent: false, verbose: false, } ``` ## Team | [](https://github.com/nfischer) | [](http://github.com/freitagbr) | |:---:|:---:| | [Nate Fischer](https://github.com/nfischer) | [Brandon Freitag](http://github.com/freitagbr) | ## Timezone support In order to provide support for timezones, without relying on the JavaScript host or any other time-zone aware environment, this library makes use of teh IANA Timezone Database directly: https://www.iana.org/time-zones The database files are parsed by the scripts in this folder, which emit AssemblyScript code which is used to process the various rules at runtime. # axios // helpers The modules found in `helpers/` should be generic modules that are _not_ specific to the domain logic of axios. These modules could theoretically be published to npm on their own and consumed by other modules or apps. Some examples of generic modules are things like: - Browser polyfills - Managing cookies - Parsing HTTP headers [](https://www.npmjs.com/package/espree) [](https://travis-ci.org/eslint/espree) [](https://www.npmjs.com/package/espree) [](https://www.bountysource.com/trackers/9348450-eslint?utm_source=9348450&utm_medium=shield&utm_campaign=TRACKER_BADGE) # Espree Espree started out as a fork of [Esprima](http://esprima.org) v1.2.2, the last stable published released of Esprima before work on ECMAScript 6 began. Espree is now built on top of [Acorn](https://github.com/ternjs/acorn), which has a modular architecture that allows extension of core functionality. The goal of Espree is to produce output that is similar to Esprima with a similar API so that it can be used in place of Esprima. ## Usage Install: ``` npm i espree ``` And in your Node.js code: ```javascript const espree = require("espree"); const ast = espree.parse(code); ``` ## API ### `parse()` `parse` parses the given code and returns a abstract syntax tree (AST). It takes two parameters. - `code` [string]() - the code which needs to be parsed. - `options (Optional)` [Object]() - read more about this [here](#options). ```javascript const espree = require("espree"); const ast = espree.parse(code, options); ``` **Example :** ```js const ast = espree.parse('let foo = "bar"', { ecmaVersion: 6 }); console.log(ast); ``` <details><summary>Output</summary> <p> ``` Node { type: 'Program', start: 0, end: 15, body: [ Node { type: 'VariableDeclaration', start: 0, end: 15, declarations: [Array], kind: 'let' } ], sourceType: 'script' } ``` </p> </details> ### `tokenize()` `tokenize` returns the tokens of a given code. It takes two parameters. - `code` [string]() - the code which needs to be parsed. - `options (Optional)` [Object]() - read more about this [here](#options). Even if `options` is empty or undefined or `options.tokens` is `false`, it assigns it to `true` in order to get the `tokens` array **Example :** ```js const tokens = espree.tokenize('let foo = "bar"', { ecmaVersion: 6 }); console.log(tokens); ``` <details><summary>Output</summary> <p> ``` Token { type: 'Keyword', value: 'let', start: 0, end: 3 }, Token { type: 'Identifier', value: 'foo', start: 4, end: 7 }, Token { type: 'Punctuator', value: '=', start: 8, end: 9 }, Token { type: 'String', value: '"bar"', start: 10, end: 15 } ``` </p> </details> ### `version` Returns the current `espree` version ### `VisitorKeys` Returns all visitor keys for traversing the AST from [eslint-visitor-keys](https://github.com/eslint/eslint-visitor-keys) ### `latestEcmaVersion` Returns the latest ECMAScript supported by `espree` ### `supportedEcmaVersions` Returns an array of all supported ECMAScript versions ## Options ```js const options = { // attach range information to each node range: false, // attach line/column location information to each node loc: false, // create a top-level comments array containing all comments comment: false, // create a top-level tokens array containing all tokens tokens: false, // Set to 3, 5 (default), 6, 7, 8, 9, 10, 11, or 12 to specify the version of ECMAScript syntax you want to use. // You can also set to 2015 (same as 6), 2016 (same as 7), 2017 (same as 8), 2018 (same as 9), 2019 (same as 10), 2020 (same as 11), or 2021 (same as 12) to use the year-based naming. ecmaVersion: 5, // specify which type of script you're parsing ("script" or "module") sourceType: "script", // specify additional language features ecmaFeatures: { // enable JSX parsing jsx: false, // enable return in global scope globalReturn: false, // enable implied strict mode (if ecmaVersion >= 5) impliedStrict: false } } ``` ## Esprima Compatibility Going Forward The primary goal is to produce the exact same AST structure and tokens as Esprima, and that takes precedence over anything else. (The AST structure being the [ESTree](https://github.com/estree/estree) API with JSX extensions.) Separate from that, Espree may deviate from what Esprima outputs in terms of where and how comments are attached, as well as what additional information is available on AST nodes. That is to say, Espree may add more things to the AST nodes than Esprima does but the overall AST structure produced will be the same. Espree may also deviate from Esprima in the interface it exposes. ## Contributing Issues and pull requests will be triaged and responded to as quickly as possible. We operate under the [ESLint Contributor Guidelines](http://eslint.org/docs/developer-guide/contributing), so please be sure to read them before contributing. If you're not sure where to dig in, check out the [issues](https://github.com/eslint/espree/issues). Espree is licensed under a permissive BSD 2-clause license. ## Security Policy We work hard to ensure that Espree is safe for everyone and that security issues are addressed quickly and responsibly. Read the full [security policy](https://github.com/eslint/.github/blob/master/SECURITY.md). ## Build Commands * `npm test` - run all linting and tests * `npm run lint` - run all linting * `npm run browserify` - creates a version of Espree that is usable in a browser ## Differences from Espree 2.x * The `tokenize()` method does not use `ecmaFeatures`. Any string will be tokenized completely based on ECMAScript 6 semantics. * Trailing whitespace no longer is counted as part of a node. * `let` and `const` declarations are no longer parsed by default. You must opt-in by using an `ecmaVersion` newer than `5` or setting `sourceType` to `module`. * The `esparse` and `esvalidate` binary scripts have been removed. * There is no `tolerant` option. We will investigate adding this back in the future. ## Known Incompatibilities In an effort to help those wanting to transition from other parsers to Espree, the following is a list of noteworthy incompatibilities with other parsers. These are known differences that we do not intend to change. ### Esprima 1.2.2 * Esprima counts trailing whitespace as part of each AST node while Espree does not. In Espree, the end of a node is where the last token occurs. * Espree does not parse `let` and `const` declarations by default. * Error messages returned for parsing errors are different. * There are two addition properties on every node and token: `start` and `end`. These represent the same data as `range` and are used internally by Acorn. ### Esprima 2.x * Esprima 2.x uses a different comment attachment algorithm that results in some comments being added in different places than Espree. The algorithm Espree uses is the same one used in Esprima 1.2.2. ## Frequently Asked Questions ### Why another parser [ESLint](http://eslint.org) had been relying on Esprima as its parser from the beginning. While that was fine when the JavaScript language was evolving slowly, the pace of development increased dramatically and Esprima had fallen behind. ESLint, like many other tools reliant on Esprima, has been stuck in using new JavaScript language features until Esprima updates, and that caused our users frustration. We decided the only way for us to move forward was to create our own parser, bringing us inline with JSHint and JSLint, and allowing us to keep implementing new features as we need them. We chose to fork Esprima instead of starting from scratch in order to move as quickly as possible with a compatible API. With Espree 2.0.0, we are no longer a fork of Esprima but rather a translation layer between Acorn and Esprima syntax. This allows us to put work back into a community-supported parser (Acorn) that is continuing to grow and evolve while maintaining an Esprima-compatible parser for those utilities still built on Esprima. ### Have you tried working with Esprima? Yes. Since the start of ESLint, we've regularly filed bugs and feature requests with Esprima and will continue to do so. However, there are some different philosophies around how the projects work that need to be worked through. The initial goal was to have Espree track Esprima and eventually merge the two back together, but we ultimately decided that building on top of Acorn was a better choice due to Acorn's plugin support. ### Why don't you just use Acorn? Acorn is a great JavaScript parser that produces an AST that is compatible with Esprima. Unfortunately, ESLint relies on more than just the AST to do its job. It relies on Esprima's tokens and comment attachment features to get a complete picture of the source code. We investigated switching to Acorn, but the inconsistencies between Esprima and Acorn created too much work for a project like ESLint. We are building on top of Acorn, however, so that we can contribute back and help make Acorn even better. ### What ECMAScript features do you support? Espree supports all ECMAScript 2020 features and partially supports ECMAScript 2021 features. Because ECMAScript 2021 is still under development, we are implementing features as they are finalized. Currently, Espree supports: * [Logical Assignment Operators](https://github.com/tc39/proposal-logical-assignment) * [Numeric Separators](https://github.com/tc39/proposal-numeric-separator) See [finished-proposals.md](https://github.com/tc39/proposals/blob/master/finished-proposals.md) to know what features are finalized. ### How do you determine which experimental features to support? In general, we do not support experimental JavaScript features. We may make exceptions from time to time depending on the maturity of the features. # eslint-visitor-keys [](https://www.npmjs.com/package/eslint-visitor-keys) [](http://www.npmtrends.com/eslint-visitor-keys) [](https://travis-ci.org/eslint/eslint-visitor-keys) [](https://david-dm.org/eslint/eslint-visitor-keys) Constants and utilities about visitor keys to traverse AST. ## 💿 Installation Use [npm] to install. ```bash $ npm install eslint-visitor-keys ``` ### Requirements - [Node.js] 4.0.0 or later. ## 📖 Usage ```js const evk = require("eslint-visitor-keys") ``` ### evk.KEYS > type: `{ [type: string]: string[] | undefined }` Visitor keys. This keys are frozen. This is an object. Keys are the type of [ESTree] nodes. Their values are an array of property names which have child nodes. For example: ``` console.log(evk.KEYS.AssignmentExpression) // → ["left", "right"] ``` ### evk.getKeys(node) > type: `(node: object) => string[]` Get the visitor keys of a given AST node. This is similar to `Object.keys(node)` of ES Standard, but some keys are excluded: `parent`, `leadingComments`, `trailingComments`, and names which start with `_`. This will be used to traverse unknown nodes. For example: ``` const node = { type: "AssignmentExpression", left: { type: "Identifier", name: "foo" }, right: { type: "Literal", value: 0 } } console.log(evk.getKeys(node)) // → ["type", "left", "right"] ``` ### evk.unionWith(additionalKeys) > type: `(additionalKeys: object) => { [type: string]: string[] | undefined }` Make the union set with `evk.KEYS` and the given keys. - The order of keys is, `additionalKeys` is at first, then `evk.KEYS` is concatenated after that. - It removes duplicated keys as keeping the first one. For example: ``` console.log(evk.unionWith({ MethodDefinition: ["decorators"] })) // → { ..., MethodDefinition: ["decorators", "key", "value"], ... } ``` ## 📰 Change log See [GitHub releases](https://github.com/eslint/eslint-visitor-keys/releases). ## 🍻 Contributing Welcome. See [ESLint contribution guidelines](https://eslint.org/docs/developer-guide/contributing/). ### Development commands - `npm test` runs tests and measures code coverage. - `npm run lint` checks source codes with ESLint. - `npm run coverage` opens the code coverage report of the previous test with your default browser. - `npm run release` publishes this package to [npm] registory. [npm]: https://www.npmjs.com/ [Node.js]: https://nodejs.org/en/ [ESTree]: https://github.com/estree/estree # ts-mixer [version-badge]: https://badgen.net/npm/v/ts-mixer [version-link]: https://npmjs.com/package/ts-mixer [build-badge]: https://img.shields.io/github/workflow/status/tannerntannern/ts-mixer/ts-mixer%20CI [build-link]: https://github.com/tannerntannern/ts-mixer/actions [ts-versions]: https://badgen.net/badge/icon/3.8,3.9,4.0,4.1,4.2?icon=typescript&label&list=| [node-versions]: https://badgen.net/badge/node/10%2C12%2C14/blue/?list=| [![npm version][version-badge]][version-link] [![github actions][build-badge]][build-link] [![TS Versions][ts-versions]][build-link] [![Node.js Versions][node-versions]][build-link] [](https://bundlephobia.com/result?p=ts-mixer) [](https://conventionalcommits.org) ## Overview `ts-mixer` brings mixins to TypeScript. "Mixins" to `ts-mixer` are just classes, so you already know how to write them, and you can probably mix classes from your favorite library without trouble. The mixin problem is more nuanced than it appears. I've seen countless code snippets that work for certain situations, but fail in others. `ts-mixer` tries to take the best from all these solutions while accounting for the situations you might not have considered. [Quick start guide](#quick-start) ### Features * mixes plain classes * mixes classes that extend other classes * mixes classes that were mixed with `ts-mixer` * supports static properties * supports protected/private properties (the popular function-that-returns-a-class solution does not) * mixes abstract classes (with caveats [[1](#caveats)]) * mixes generic classes (with caveats [[2](#caveats)]) * supports class, method, and property decorators (with caveats [[3, 6](#caveats)]) * mostly supports the complexity presented by constructor functions (with caveats [[4](#caveats)]) * comes with an `instanceof`-like replacement (with caveats [[5, 6](#caveats)]) * [multiple mixing strategies](#settings) (ES6 proxies vs hard copy) ### Caveats 1. Mixing abstract classes requires a bit of a hack that may break in future versions of TypeScript. See [mixing abstract classes](#mixing-abstract-classes) below. 2. Mixing generic classes requires a more cumbersome notation, but it's still possible. See [mixing generic classes](#mixing-generic-classes) below. 3. Using decorators in mixed classes also requires a more cumbersome notation. See [mixing with decorators](#mixing-with-decorators) below. 4. ES6 made it impossible to use `.apply(...)` on class constructors (or any means of calling them without `new`), which makes it impossible for `ts-mixer` to pass the proper `this` to your constructors. This may or may not be an issue for your code, but there are options to work around it. See [dealing with constructors](#dealing-with-constructors) below. 5. `ts-mixer` does not support `instanceof` for mixins, but it does offer a replacement. See the [hasMixin function](#hasmixin) for more details. 6. Certain features (specifically, `@decorator` and `hasMixin`) make use of ES6 `Map`s, which means you must either use ES6+ or polyfill `Map` to use them. If you don't need these features, you should be fine without. ## Quick Start ### Installation ``` $ npm install ts-mixer ``` or if you prefer [Yarn](https://yarnpkg.com): ``` $ yarn add ts-mixer ``` ### Basic Example ```typescript import { Mixin } from 'ts-mixer'; class Foo { protected makeFoo() { return 'foo'; } } class Bar { protected makeBar() { return 'bar'; } } class FooBar extends Mixin(Foo, Bar) { public makeFooBar() { return this.makeFoo() + this.makeBar(); } } const fooBar = new FooBar(); console.log(fooBar.makeFooBar()); // "foobar" ``` ## Special Cases ### Mixing Abstract Classes Abstract classes, by definition, cannot be constructed, which means they cannot take on the type, `new(...args) => any`, and by extension, are incompatible with `ts-mixer`. BUT, you can "trick" TypeScript into giving you all the benefits of an abstract class without making it technically abstract. The trick is just some strategic `// @ts-ignore`'s: ```typescript import { Mixin } from 'ts-mixer'; // note that Foo is not marked as an abstract class class Foo { // @ts-ignore: "Abstract methods can only appear within an abstract class" public abstract makeFoo(): string; } class Bar { public makeBar() { return 'bar'; } } class FooBar extends Mixin(Foo, Bar) { // we still get all the benefits of abstract classes here, because TypeScript // will still complain if this method isn't implemented public makeFoo() { return 'foo'; } } ``` Do note that while this does work quite well, it is a bit of a hack and I can't promise that it will continue to work in future TypeScript versions. ### Mixing Generic Classes Frustratingly, it is _impossible_ for generic parameters to be referenced in base class expressions. No matter what, you will eventually run into `Base class expressions cannot reference class type parameters.` The way to get around this is to leverage [declaration merging](https://www.typescriptlang.org/docs/handbook/declaration-merging.html), and a slightly different mixing function from ts-mixer: `mix`. It works exactly like `Mixin`, except it's a decorator, which means it doesn't affect the type information of the class being decorated. See it in action below: ```typescript import { mix } from 'ts-mixer'; class Foo<T> { public fooMethod(input: T): T { return input; } } class Bar<T> { public barMethod(input: T): T { return input; } } interface FooBar<T1, T2> extends Foo<T1>, Bar<T2> { } @mix(Foo, Bar) class FooBar<T1, T2> { public fooBarMethod(input1: T1, input2: T2) { return [this.fooMethod(input1), this.barMethod(input2)]; } } ``` Key takeaways from this example: * `interface FooBar<T1, T2> extends Foo<T1>, Bar<T2> { }` makes sure `FooBar` has the typing we want, thanks to declaration merging * `@mix(Foo, Bar)` wires things up "on the JavaScript side", since the interface declaration has nothing to do with runtime behavior. * The reason we have to use the `mix` decorator is that the typing produced by `Mixin(Foo, Bar)` would conflict with the typing of the interface. `mix` has no effect "on the TypeScript side," thus avoiding type conflicts. ### Mixing with Decorators Popular libraries such as [class-validator](https://github.com/typestack/class-validator) and [TypeORM](https://github.com/typeorm/typeorm) use decorators to add functionality. Unfortunately, `ts-mixer` has no way of knowing what these libraries do with the decorators behind the scenes. So if you want these decorators to be "inherited" with classes you plan to mix, you first have to wrap them with a special `decorate` function exported by `ts-mixer`. Here's an example using `class-validator`: ```typescript import { IsBoolean, IsIn, validate } from 'class-validator'; import { Mixin, decorate } from 'ts-mixer'; class Disposable { @decorate(IsBoolean()) // instead of @IsBoolean() isDisposed: boolean = false; } class Statusable { @decorate(IsIn(['red', 'green'])) // instead of @IsIn(['red', 'green']) status: string = 'green'; } class ExtendedObject extends Mixin(Disposable, Statusable) {} const extendedObject = new ExtendedObject(); extendedObject.status = 'blue'; validate(extendedObject).then(errors => { console.log(errors); }); ``` ### Dealing with Constructors As mentioned in the [caveats section](#caveats), ES6 disallowed calling constructor functions without `new`. This means that the only way for `ts-mixer` to mix instance properties is to instantiate each base class separately, then copy the instance properties into a common object. The consequence of this is that constructors mixed by `ts-mixer` will _not_ receive the proper `this`. **This very well may not be an issue for you!** It only means that your constructors need to be "mostly pure" in terms of how they handle `this`. Specifically, your constructors cannot produce [side effects](https://en.wikipedia.org/wiki/Side_effect_%28computer_science%29) involving `this`, _other than adding properties to `this`_ (the most common side effect in JavaScript constructors). If you simply cannot eliminate `this` side effects from your constructor, there is a workaround available: `ts-mixer` will automatically forward constructor parameters to a predesignated init function (`settings.initFunction`) if it's present on the class. Unlike constructors, functions can be called with an arbitrary `this`, so this predesignated init function _will_ have the proper `this`. Here's a basic example: ```typescript import { Mixin, settings } from 'ts-mixer'; settings.initFunction = 'init'; class Person { public static allPeople: Set<Person> = new Set(); protected init() { Person.allPeople.add(this); } } type PartyAffiliation = 'democrat' | 'republican'; class PoliticalParticipant { public static democrats: Set<PoliticalParticipant> = new Set(); public static republicans: Set<PoliticalParticipant> = new Set(); public party: PartyAffiliation; // note that these same args will also be passed to init function public constructor(party: PartyAffiliation) { this.party = party; } protected init(party: PartyAffiliation) { if (party === 'democrat') PoliticalParticipant.democrats.add(this); else PoliticalParticipant.republicans.add(this); } } class Voter extends Mixin(Person, PoliticalParticipant) {} const v1 = new Voter('democrat'); const v2 = new Voter('democrat'); const v3 = new Voter('republican'); const v4 = new Voter('republican'); ``` Note the above `.add(this)` statements. These would not work as expected if they were placed in the constructor instead, since `this` is not the same between the constructor and `init`, as explained above. ## Other Features ### hasMixin As mentioned above, `ts-mixer` does not support `instanceof` for mixins. While it is possible to implement [custom `instanceof` behavior](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol/hasInstance), this library does not do so because it would require modifying the source classes, which is deliberately avoided. You can fill this missing functionality with `hasMixin(instance, mixinClass)` instead. See the below example: ```typescript import { Mixin, hasMixin } from 'ts-mixer'; class Foo {} class Bar {} class FooBar extends Mixin(Foo, Bar) {} const instance = new FooBar(); // doesn't work with instanceof... console.log(instance instanceof FooBar) // true console.log(instance instanceof Foo) // false console.log(instance instanceof Bar) // false // but everything works nicely with hasMixin! console.log(hasMixin(instance, FooBar)) // true console.log(hasMixin(instance, Foo)) // true console.log(hasMixin(instance, Bar)) // true ``` `hasMixin(instance, mixinClass)` will work anywhere that `instance instanceof mixinClass` works. Additionally, like `instanceof`, you get the same [type narrowing benefits](https://www.typescriptlang.org/docs/handbook/advanced-types.html#instanceof-type-guards): ```typescript if (hasMixin(instance, Foo)) { // inferred type of instance is "Foo" } if (hasMixin(instance, Bar)) { // inferred type of instance of "Bar" } ``` ## Settings ts-mixer has multiple strategies for mixing classes which can be configured by modifying `settings` from ts-mixer. For example: ```typescript import { settings, Mixin } from 'ts-mixer'; settings.prototypeStrategy = 'proxy'; // then use `Mixin` as normal... ``` ### `settings.prototypeStrategy` * Determines how ts-mixer will mix class prototypes together * Possible values: - `'copy'` (default) - Copies all methods from the classes being mixed into a new prototype object. (This will include all methods up the prototype chains as well.) This is the default for ES5 compatibility, but it has the downside of stale references. For example, if you mix `Foo` and `Bar` to make `FooBar`, then redefine a method on `Foo`, `FooBar` will not have the latest methods from `Foo`. If this is not a concern for you, `'copy'` is the best value for this setting. - `'proxy'` - Uses an ES6 Proxy to "soft mix" prototypes. Unlike `'copy'`, updates to the base classes _will_ be reflected in the mixed class, which may be desirable. The downside is that method access is not as performant, nor is it ES5 compatible. ### `settings.staticsStrategy` * Determines how static properties are inherited * Possible values: - `'copy'` (default) - Simply copies all properties (minus `prototype`) from the base classes/constructor functions onto the mixed class. Like `settings.prototypeStrategy = 'copy'`, this strategy also suffers from stale references, but shouldn't be a concern if you don't redefine static methods after mixing. - `'proxy'` - Similar to `settings.prototypeStrategy`, proxy's static method access to base classes. Has the same benefits/downsides. ### `settings.initFunction` * If set, `ts-mixer` will automatically call the function with this name upon construction * Possible values: - `null` (default) - disables the behavior - a string - function name to call upon construction * Read more about why you would want this in [dealing with constructors](#dealing-with-constructors) ### `settings.decoratorInheritance` * Determines how decorators are inherited from classes passed to `Mixin(...)` * Possible values: - `'deep'` (default) - Deeply inherits decorators from all given classes and their ancestors - `'direct'` - Only inherits decorators defined directly on the given classes - `'none'` - Skips decorator inheritance # Author Tanner Nielsen <tannerntannern@gmail.com> * Website - [tannernielsen.com](http://tannernielsen.com) * Github - [tannerntannern](https://github.com/tannerntannern) # hasurl [![NPM Version][npm-image]][npm-url] [![Build Status][travis-image]][travis-url] > Determine whether Node.js' native [WHATWG `URL`](https://nodejs.org/api/url.html#url_the_whatwg_url_api) implementation is available. ## Installation [Node.js](http://nodejs.org/) `>= 4` is required. To install, type this at the command line: ```shell npm install hasurl ``` ## Usage ```js const hasURL = require('hasurl'); if (hasURL()) { // supported } else { // fallback } ``` [npm-image]: https://img.shields.io/npm/v/hasurl.svg [npm-url]: https://npmjs.org/package/hasurl [travis-image]: https://img.shields.io/travis/stevenvachon/hasurl.svg [travis-url]: https://travis-ci.org/stevenvachon/hasurl # flat-cache > A stupidly simple key/value storage using files to persist the data [](https://npmjs.org/package/flat-cache) [](https://travis-ci.org/royriojas/flat-cache) ## install ```bash npm i --save flat-cache ``` ## Usage ```js var flatCache = require('flat-cache') // loads the cache, if one does not exists for the given // Id a new one will be prepared to be created var cache = flatCache.load('cacheId'); // sets a key on the cache cache.setKey('key', { foo: 'var' }); // get a key from the cache cache.getKey('key') // { foo: 'var' } // fetch the entire persisted object cache.all() // { 'key': { foo: 'var' } } // remove a key cache.removeKey('key'); // removes a key from the cache // save it to disk cache.save(); // very important, if you don't save no changes will be persisted. // cache.save( true /* noPrune */) // can be used to prevent the removal of non visited keys // loads the cache from a given directory, if one does // not exists for the given Id a new one will be prepared to be created var cache = flatCache.load('cacheId', path.resolve('./path/to/folder')); // The following methods are useful to clear the cache // delete a given cache flatCache.clearCacheById('cacheId') // removes the cacheId document if one exists. // delete all cache flatCache.clearAll(); // remove the cache directory ``` ## Motivation for this module I needed a super simple and dumb **in-memory cache** with optional disk persistance in order to make a script that will beutify files with `esformatter` only execute on the files that were changed since the last run. To make that possible we need to store the `fileSize` and `modificationTime` of the files. So a simple `key/value` storage was needed and Bam! this module was born. ## Important notes - If no directory is especified when the `load` method is called, a folder named `.cache` will be created inside the module directory when `cache.save` is called. If you're committing your `node_modules` to any vcs, you might want to ignore the default `.cache` folder, or specify a custom directory. - The values set on the keys of the cache should be `stringify-able` ones, meaning no circular references - All the changes to the cache state are done to memory - I could have used a timer or `Object.observe` to deliver the changes to disk, but I wanted to keep this module intentionally dumb and simple - Non visited keys are removed when `cache.save()` is called. If this is not desired, you can pass `true` to the save call like: `cache.save( true /* noPrune */ )`. ## License MIT ## Changelog [changelog](./changelog.md) <img align="right" alt="Ajv logo" width="160" src="https://ajv.js.org/images/ajv_logo.png"> # Ajv: Another JSON Schema Validator The fastest JSON Schema validator for Node.js and browser. Supports draft-04/06/07. [](https://travis-ci.org/ajv-validator/ajv) [](https://www.npmjs.com/package/ajv) [](https://www.npmjs.com/package/ajv/v/7.0.0-beta.0) [](https://www.npmjs.com/package/ajv) [](https://coveralls.io/github/ajv-validator/ajv?branch=master) [](https://gitter.im/ajv-validator/ajv) [](https://github.com/sponsors/epoberezkin) ## Ajv v7 beta is released [Ajv version 7.0.0-beta.0](https://github.com/ajv-validator/ajv/tree/v7-beta) is released with these changes: - to reduce the mistakes in JSON schemas and unexpected validation results, [strict mode](./docs/strict-mode.md) is added - it prohibits ignored or ambiguous JSON Schema elements. - to make code injection from untrusted schemas impossible, [code generation](./docs/codegen.md) is fully re-written to be safe. - to simplify Ajv extensions, the new keyword API that is used by pre-defined keywords is available to user-defined keywords - it is much easier to define any keywords now, especially with subschemas. - schemas are compiled to ES6 code (ES5 code generation is supported with an option). - to improve reliability and maintainability the code is migrated to TypeScript. **Please note**: - the support for JSON-Schema draft-04 is removed - if you have schemas using "id" attributes you have to replace them with "\$id" (or continue using version 6 that will be supported until 02/28/2021). - all formats are separated to ajv-formats package - they have to be explicitely added if you use them. See [release notes](https://github.com/ajv-validator/ajv/releases/tag/v7.0.0-beta.0) for the details. To install the new version: ```bash npm install ajv@beta ``` See [Getting started with v7](https://github.com/ajv-validator/ajv/tree/v7-beta#usage) for code example. ## Mozilla MOSS grant and OpenJS Foundation [<img src="https://www.poberezkin.com/images/mozilla.png" width="240" height="68">](https://www.mozilla.org/en-US/moss/) &nbsp;&nbsp;&nbsp; [<img src="https://www.poberezkin.com/images/openjs.png" width="220" height="68">](https://openjsf.org/blog/2020/08/14/ajv-joins-openjs-foundation-as-an-incubation-project/) Ajv has been awarded a grant from Mozilla’s [Open Source Support (MOSS) program](https://www.mozilla.org/en-US/moss/) in the “Foundational Technology” track! It will sponsor the development of Ajv support of [JSON Schema version 2019-09](https://tools.ietf.org/html/draft-handrews-json-schema-02) and of [JSON Type Definition](https://tools.ietf.org/html/draft-ucarion-json-type-definition-04). Ajv also joined [OpenJS Foundation](https://openjsf.org/) – having this support will help ensure the longevity and stability of Ajv for all its users. This [blog post](https://www.poberezkin.com/posts/2020-08-14-ajv-json-validator-mozilla-open-source-grant-openjs-foundation.html) has more details. I am looking for the long term maintainers of Ajv – working with [ReadySet](https://www.thereadyset.co/), also sponsored by Mozilla, to establish clear guidelines for the role of a "maintainer" and the contribution standards, and to encourage a wider, more inclusive, contribution from the community. ## Please [sponsor Ajv development](https://github.com/sponsors/epoberezkin) Since I asked to support Ajv development 40 people and 6 organizations contributed via GitHub and OpenCollective - this support helped receiving the MOSS grant! Your continuing support is very important - the funds will be used to develop and maintain Ajv once the next major version is released. Please sponsor Ajv via: - [GitHub sponsors page](https://github.com/sponsors/epoberezkin) (GitHub will match it) - [Ajv Open Collective️](https://opencollective.com/ajv) Thank you. #### Open Collective sponsors <a href="https://opencollective.com/ajv"><img src="https://opencollective.com/ajv/individuals.svg?width=890"></a> <a href="https://opencollective.com/ajv/organization/0/website"><img src="https://opencollective.com/ajv/organization/0/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/1/website"><img src="https://opencollective.com/ajv/organization/1/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/2/website"><img src="https://opencollective.com/ajv/organization/2/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/3/website"><img src="https://opencollective.com/ajv/organization/3/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/4/website"><img src="https://opencollective.com/ajv/organization/4/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/5/website"><img src="https://opencollective.com/ajv/organization/5/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/6/website"><img src="https://opencollective.com/ajv/organization/6/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/7/website"><img src="https://opencollective.com/ajv/organization/7/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/8/website"><img src="https://opencollective.com/ajv/organization/8/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/9/website"><img src="https://opencollective.com/ajv/organization/9/avatar.svg"></a> ## Using version 6 [JSON Schema draft-07](http://json-schema.org/latest/json-schema-validation.html) is published. [Ajv version 6.0.0](https://github.com/ajv-validator/ajv/releases/tag/v6.0.0) that supports draft-07 is released. It may require either migrating your schemas or updating your code (to continue using draft-04 and v5 schemas, draft-06 schemas will be supported without changes). __Please note__: To use Ajv with draft-06 schemas you need to explicitly add the meta-schema to the validator instance: ```javascript ajv.addMetaSchema(require('ajv/lib/refs/json-schema-draft-06.json')); ``` To use Ajv with draft-04 schemas in addition to explicitly adding meta-schema you also need to use option schemaId: ```javascript var ajv = new Ajv({schemaId: 'id'}); // If you want to use both draft-04 and draft-06/07 schemas: // var ajv = new Ajv({schemaId: 'auto'}); ajv.addMetaSchema(require('ajv/lib/refs/json-schema-draft-04.json')); ``` ## Contents - [Performance](#performance) - [Features](#features) - [Getting started](#getting-started) - [Frequently Asked Questions](https://github.com/ajv-validator/ajv/blob/master/FAQ.md) - [Using in browser](#using-in-browser) - [Ajv and Content Security Policies (CSP)](#ajv-and-content-security-policies-csp) - [Command line interface](#command-line-interface) - Validation - [Keywords](#validation-keywords) - [Annotation keywords](#annotation-keywords) - [Formats](#formats) - [Combining schemas with $ref](#ref) - [$data reference](#data-reference) - NEW: [$merge and $patch keywords](#merge-and-patch-keywords) - [Defining custom keywords](#defining-custom-keywords) - [Asynchronous schema compilation](#asynchronous-schema-compilation) - [Asynchronous validation](#asynchronous-validation) - [Security considerations](#security-considerations) - [Security contact](#security-contact) - [Untrusted schemas](#untrusted-schemas) - [Circular references in objects](#circular-references-in-javascript-objects) - [Trusted schemas](#security-risks-of-trusted-schemas) - [ReDoS attack](#redos-attack) - Modifying data during validation - [Filtering data](#filtering-data) - [Assigning defaults](#assigning-defaults) - [Coercing data types](#coercing-data-types) - API - [Methods](#api) - [Options](#options) - [Validation errors](#validation-errors) - [Plugins](#plugins) - [Related packages](#related-packages) - [Some packages using Ajv](#some-packages-using-ajv) - [Tests, Contributing, Changes history](#tests) - [Support, Code of conduct, License](#open-source-software-support) ## Performance Ajv generates code using [doT templates](https://github.com/olado/doT) to turn JSON Schemas into super-fast validation functions that are efficient for v8 optimization. Currently Ajv is the fastest and the most standard compliant validator according to these benchmarks: - [json-schema-benchmark](https://github.com/ebdrup/json-schema-benchmark) - 50% faster than the second place - [jsck benchmark](https://github.com/pandastrike/jsck#benchmarks) - 20-190% faster - [z-schema benchmark](https://rawgit.com/zaggino/z-schema/master/benchmark/results.html) - [themis benchmark](https://cdn.rawgit.com/playlyfe/themis/master/benchmark/results.html) Performance of different validators by [json-schema-benchmark](https://github.com/ebdrup/json-schema-benchmark): [](https://github.com/ebdrup/json-schema-benchmark/blob/master/README.md#performance) ## Features - Ajv implements full JSON Schema [draft-06/07](http://json-schema.org/) and draft-04 standards: - all validation keywords (see [JSON Schema validation keywords](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md)) - full support of remote refs (remote schemas have to be added with `addSchema` or compiled to be available) - support of circular references between schemas - correct string lengths for strings with unicode pairs (can be turned off) - [formats](#formats) defined by JSON Schema draft-07 standard and custom formats (can be turned off) - [validates schemas against meta-schema](#api-validateschema) - supports [browsers](#using-in-browser) and Node.js 0.10-14.x - [asynchronous loading](#asynchronous-schema-compilation) of referenced schemas during compilation - "All errors" validation mode with [option allErrors](#options) - [error messages with parameters](#validation-errors) describing error reasons to allow creating custom error messages - i18n error messages support with [ajv-i18n](https://github.com/ajv-validator/ajv-i18n) package - [filtering data](#filtering-data) from additional properties - [assigning defaults](#assigning-defaults) to missing properties and items - [coercing data](#coercing-data-types) to the types specified in `type` keywords - [custom keywords](#defining-custom-keywords) - draft-06/07 keywords `const`, `contains`, `propertyNames` and `if/then/else` - draft-06 boolean schemas (`true`/`false` as a schema to always pass/fail). - keywords `switch`, `patternRequired`, `formatMaximum` / `formatMinimum` and `formatExclusiveMaximum` / `formatExclusiveMinimum` from [JSON Schema extension proposals](https://github.com/json-schema/json-schema/wiki/v5-Proposals) with [ajv-keywords](https://github.com/ajv-validator/ajv-keywords) package - [$data reference](#data-reference) to use values from the validated data as values for the schema keywords - [asynchronous validation](#asynchronous-validation) of custom formats and keywords ## Install ``` npm install ajv ``` ## <a name="usage"></a>Getting started Try it in the Node.js REPL: https://tonicdev.com/npm/ajv The fastest validation call: ```javascript // Node.js require: var Ajv = require('ajv'); // or ESM/TypeScript import import Ajv from 'ajv'; var ajv = new Ajv(); // options can be passed, e.g. {allErrors: true} var validate = ajv.compile(schema); var valid = validate(data); if (!valid) console.log(validate.errors); ``` or with less code ```javascript // ... var valid = ajv.validate(schema, data); if (!valid) console.log(ajv.errors); // ... ``` or ```javascript // ... var valid = ajv.addSchema(schema, 'mySchema') .validate('mySchema', data); if (!valid) console.log(ajv.errorsText()); // ... ``` See [API](#api) and [Options](#options) for more details. Ajv compiles schemas to functions and caches them in all cases (using schema serialized with [fast-json-stable-stringify](https://github.com/epoberezkin/fast-json-stable-stringify) or a custom function as a key), so that the next time the same schema is used (not necessarily the same object instance) it won't be compiled again. The best performance is achieved when using compiled functions returned by `compile` or `getSchema` methods (there is no additional function call). __Please note__: every time a validation function or `ajv.validate` are called `errors` property is overwritten. You need to copy `errors` array reference to another variable if you want to use it later (e.g., in the callback). See [Validation errors](#validation-errors) __Note for TypeScript users__: `ajv` provides its own TypeScript declarations out of the box, so you don't need to install the deprecated `@types/ajv` module. ## Using in browser You can require Ajv directly from the code you browserify - in this case Ajv will be a part of your bundle. If you need to use Ajv in several bundles you can create a separate UMD bundle using `npm run bundle` script (thanks to [siddo420](https://github.com/siddo420)). Then you need to load Ajv in the browser: ```html <script src="ajv.min.js"></script> ``` This bundle can be used with different module systems; it creates global `Ajv` if no module system is found. The browser bundle is available on [cdnjs](https://cdnjs.com/libraries/ajv). Ajv is tested with these browsers: [](https://saucelabs.com/u/epoberezkin) __Please note__: some frameworks, e.g. Dojo, may redefine global require in such way that is not compatible with CommonJS module format. In such case Ajv bundle has to be loaded before the framework and then you can use global Ajv (see issue [#234](https://github.com/ajv-validator/ajv/issues/234)). ### Ajv and Content Security Policies (CSP) If you're using Ajv to compile a schema (the typical use) in a browser document that is loaded with a Content Security Policy (CSP), that policy will require a `script-src` directive that includes the value `'unsafe-eval'`. :warning: NOTE, however, that `unsafe-eval` is NOT recommended in a secure CSP[[1]](https://developer.chrome.com/extensions/contentSecurityPolicy#relaxing-eval), as it has the potential to open the document to cross-site scripting (XSS) attacks. In order to make use of Ajv without easing your CSP, you can [pre-compile a schema using the CLI](https://github.com/ajv-validator/ajv-cli#compile-schemas). This will transpile the schema JSON into a JavaScript file that exports a `validate` function that works simlarly to a schema compiled at runtime. Note that pre-compilation of schemas is performed using [ajv-pack](https://github.com/ajv-validator/ajv-pack) and there are [some limitations to the schema features it can compile](https://github.com/ajv-validator/ajv-pack#limitations). A successfully pre-compiled schema is equivalent to the same schema compiled at runtime. ## Command line interface CLI is available as a separate npm package [ajv-cli](https://github.com/ajv-validator/ajv-cli). It supports: - compiling JSON Schemas to test their validity - BETA: generating standalone module exporting a validation function to be used without Ajv (using [ajv-pack](https://github.com/ajv-validator/ajv-pack)) - migrate schemas to draft-07 (using [json-schema-migrate](https://github.com/epoberezkin/json-schema-migrate)) - validating data file(s) against JSON Schema - testing expected validity of data against JSON Schema - referenced schemas - custom meta-schemas - files in JSON, JSON5, YAML, and JavaScript format - all Ajv options - reporting changes in data after validation in [JSON-patch](https://tools.ietf.org/html/rfc6902) format ## Validation keywords Ajv supports all validation keywords from draft-07 of JSON Schema standard: - [type](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#type) - [for numbers](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#keywords-for-numbers) - maximum, minimum, exclusiveMaximum, exclusiveMinimum, multipleOf - [for strings](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#keywords-for-strings) - maxLength, minLength, pattern, format - [for arrays](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#keywords-for-arrays) - maxItems, minItems, uniqueItems, items, additionalItems, [contains](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#contains) - [for objects](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#keywords-for-objects) - maxProperties, minProperties, required, properties, patternProperties, additionalProperties, dependencies, [propertyNames](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#propertynames) - [for all types](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#keywords-for-all-types) - enum, [const](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#const) - [compound keywords](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#compound-keywords) - not, oneOf, anyOf, allOf, [if/then/else](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#ifthenelse) With [ajv-keywords](https://github.com/ajv-validator/ajv-keywords) package Ajv also supports validation keywords from [JSON Schema extension proposals](https://github.com/json-schema/json-schema/wiki/v5-Proposals) for JSON Schema standard: - [patternRequired](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#patternrequired-proposed) - like `required` but with patterns that some property should match. - [formatMaximum, formatMinimum, formatExclusiveMaximum, formatExclusiveMinimum](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#formatmaximum--formatminimum-and-exclusiveformatmaximum--exclusiveformatminimum-proposed) - setting limits for date, time, etc. See [JSON Schema validation keywords](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md) for more details. ## Annotation keywords JSON Schema specification defines several annotation keywords that describe schema itself but do not perform any validation. - `title` and `description`: information about the data represented by that schema - `$comment` (NEW in draft-07): information for developers. With option `$comment` Ajv logs or passes the comment string to the user-supplied function. See [Options](#options). - `default`: a default value of the data instance, see [Assigning defaults](#assigning-defaults). - `examples` (NEW in draft-06): an array of data instances. Ajv does not check the validity of these instances against the schema. - `readOnly` and `writeOnly` (NEW in draft-07): marks data-instance as read-only or write-only in relation to the source of the data (database, api, etc.). - `contentEncoding`: [RFC 2045](https://tools.ietf.org/html/rfc2045#section-6.1 ), e.g., "base64". - `contentMediaType`: [RFC 2046](https://tools.ietf.org/html/rfc2046), e.g., "image/png". __Please note__: Ajv does not implement validation of the keywords `examples`, `contentEncoding` and `contentMediaType` but it reserves them. If you want to create a plugin that implements some of them, it should remove these keywords from the instance. ## Formats Ajv implements formats defined by JSON Schema specification and several other formats. It is recommended NOT to use "format" keyword implementations with untrusted data, as they use potentially unsafe regular expressions - see [ReDoS attack](#redos-attack). __Please note__: if you need to use "format" keyword to validate untrusted data, you MUST assess their suitability and safety for your validation scenarios. The following formats are implemented for string validation with "format" keyword: - _date_: full-date according to [RFC3339](http://tools.ietf.org/html/rfc3339#section-5.6). - _time_: time with optional time-zone. - _date-time_: date-time from the same source (time-zone is mandatory). `date`, `time` and `date-time` validate ranges in `full` mode and only regexp in `fast` mode (see [options](#options)). - _uri_: full URI. - _uri-reference_: URI reference, including full and relative URIs. - _uri-template_: URI template according to [RFC6570](https://tools.ietf.org/html/rfc6570) - _url_ (deprecated): [URL record](https://url.spec.whatwg.org/#concept-url). - _email_: email address. - _hostname_: host name according to [RFC1034](http://tools.ietf.org/html/rfc1034#section-3.5). - _ipv4_: IP address v4. - _ipv6_: IP address v6. - _regex_: tests whether a string is a valid regular expression by passing it to RegExp constructor. - _uuid_: Universally Unique IDentifier according to [RFC4122](http://tools.ietf.org/html/rfc4122). - _json-pointer_: JSON-pointer according to [RFC6901](https://tools.ietf.org/html/rfc6901). - _relative-json-pointer_: relative JSON-pointer according to [this draft](http://tools.ietf.org/html/draft-luff-relative-json-pointer-00). __Please note__: JSON Schema draft-07 also defines formats `iri`, `iri-reference`, `idn-hostname` and `idn-email` for URLs, hostnames and emails with international characters. Ajv does not implement these formats. If you create Ajv plugin that implements them please make a PR to mention this plugin here. There are two modes of format validation: `fast` and `full`. This mode affects formats `date`, `time`, `date-time`, `uri`, `uri-reference`, and `email`. See [Options](#options) for details. You can add additional formats and replace any of the formats above using [addFormat](#api-addformat) method. The option `unknownFormats` allows changing the default behaviour when an unknown format is encountered. In this case Ajv can either fail schema compilation (default) or ignore it (default in versions before 5.0.0). You also can allow specific format(s) that will be ignored. See [Options](#options) for details. You can find regular expressions used for format validation and the sources that were used in [formats.js](https://github.com/ajv-validator/ajv/blob/master/lib/compile/formats.js). ## <a name="ref"></a>Combining schemas with $ref You can structure your validation logic across multiple schema files and have schemas reference each other using `$ref` keyword. Example: ```javascript var schema = { "$id": "http://example.com/schemas/schema.json", "type": "object", "properties": { "foo": { "$ref": "defs.json#/definitions/int" }, "bar": { "$ref": "defs.json#/definitions/str" } } }; var defsSchema = { "$id": "http://example.com/schemas/defs.json", "definitions": { "int": { "type": "integer" }, "str": { "type": "string" } } }; ``` Now to compile your schema you can either pass all schemas to Ajv instance: ```javascript var ajv = new Ajv({schemas: [schema, defsSchema]}); var validate = ajv.getSchema('http://example.com/schemas/schema.json'); ``` or use `addSchema` method: ```javascript var ajv = new Ajv; var validate = ajv.addSchema(defsSchema) .compile(schema); ``` See [Options](#options) and [addSchema](#api) method. __Please note__: - `$ref` is resolved as the uri-reference using schema $id as the base URI (see the example). - References can be recursive (and mutually recursive) to implement the schemas for different data structures (such as linked lists, trees, graphs, etc.). - You don't have to host your schema files at the URIs that you use as schema $id. These URIs are only used to identify the schemas, and according to JSON Schema specification validators should not expect to be able to download the schemas from these URIs. - The actual location of the schema file in the file system is not used. - You can pass the identifier of the schema as the second parameter of `addSchema` method or as a property name in `schemas` option. This identifier can be used instead of (or in addition to) schema $id. - You cannot have the same $id (or the schema identifier) used for more than one schema - the exception will be thrown. - You can implement dynamic resolution of the referenced schemas using `compileAsync` method. In this way you can store schemas in any system (files, web, database, etc.) and reference them without explicitly adding to Ajv instance. See [Asynchronous schema compilation](#asynchronous-schema-compilation). ## $data reference With `$data` option you can use values from the validated data as the values for the schema keywords. See [proposal](https://github.com/json-schema-org/json-schema-spec/issues/51) for more information about how it works. `$data` reference is supported in the keywords: const, enum, format, maximum/minimum, exclusiveMaximum / exclusiveMinimum, maxLength / minLength, maxItems / minItems, maxProperties / minProperties, formatMaximum / formatMinimum, formatExclusiveMaximum / formatExclusiveMinimum, multipleOf, pattern, required, uniqueItems. The value of "$data" should be a [JSON-pointer](https://tools.ietf.org/html/rfc6901) to the data (the root is always the top level data object, even if the $data reference is inside a referenced subschema) or a [relative JSON-pointer](http://tools.ietf.org/html/draft-luff-relative-json-pointer-00) (it is relative to the current point in data; if the $data reference is inside a referenced subschema it cannot point to the data outside of the root level for this subschema). Examples. This schema requires that the value in property `smaller` is less or equal than the value in the property larger: ```javascript var ajv = new Ajv({$data: true}); var schema = { "properties": { "smaller": { "type": "number", "maximum": { "$data": "1/larger" } }, "larger": { "type": "number" } } }; var validData = { smaller: 5, larger: 7 }; ajv.validate(schema, validData); // true ``` This schema requires that the properties have the same format as their field names: ```javascript var schema = { "additionalProperties": { "type": "string", "format": { "$data": "0#" } } }; var validData = { 'date-time': '1963-06-19T08:30:06.283185Z', email: 'joe.bloggs@example.com' } ``` `$data` reference is resolved safely - it won't throw even if some property is undefined. If `$data` resolves to `undefined` the validation succeeds (with the exclusion of `const` keyword). If `$data` resolves to incorrect type (e.g. not "number" for maximum keyword) the validation fails. ## $merge and $patch keywords With the package [ajv-merge-patch](https://github.com/ajv-validator/ajv-merge-patch) you can use the keywords `$merge` and `$patch` that allow extending JSON Schemas with patches using formats [JSON Merge Patch (RFC 7396)](https://tools.ietf.org/html/rfc7396) and [JSON Patch (RFC 6902)](https://tools.ietf.org/html/rfc6902). To add keywords `$merge` and `$patch` to Ajv instance use this code: ```javascript require('ajv-merge-patch')(ajv); ``` Examples. Using `$merge`: ```json { "$merge": { "source": { "type": "object", "properties": { "p": { "type": "string" } }, "additionalProperties": false }, "with": { "properties": { "q": { "type": "number" } } } } } ``` Using `$patch`: ```json { "$patch": { "source": { "type": "object", "properties": { "p": { "type": "string" } }, "additionalProperties": false }, "with": [ { "op": "add", "path": "/properties/q", "value": { "type": "number" } } ] } } ``` The schemas above are equivalent to this schema: ```json { "type": "object", "properties": { "p": { "type": "string" }, "q": { "type": "number" } }, "additionalProperties": false } ``` The properties `source` and `with` in the keywords `$merge` and `$patch` can use absolute or relative `$ref` to point to other schemas previously added to the Ajv instance or to the fragments of the current schema. See the package [ajv-merge-patch](https://github.com/ajv-validator/ajv-merge-patch) for more information. ## Defining custom keywords The advantages of using custom keywords are: - allow creating validation scenarios that cannot be expressed using JSON Schema - simplify your schemas - help bringing a bigger part of the validation logic to your schemas - make your schemas more expressive, less verbose and closer to your application domain - implement custom data processors that modify your data (`modifying` option MUST be used in keyword definition) and/or create side effects while the data is being validated If a keyword is used only for side-effects and its validation result is pre-defined, use option `valid: true/false` in keyword definition to simplify both generated code (no error handling in case of `valid: true`) and your keyword functions (no need to return any validation result). The concerns you have to be aware of when extending JSON Schema standard with custom keywords are the portability and understanding of your schemas. You will have to support these custom keywords on other platforms and to properly document these keywords so that everybody can understand them in your schemas. You can define custom keywords with [addKeyword](#api-addkeyword) method. Keywords are defined on the `ajv` instance level - new instances will not have previously defined keywords. Ajv allows defining keywords with: - validation function - compilation function - macro function - inline compilation function that should return code (as string) that will be inlined in the currently compiled schema. Example. `range` and `exclusiveRange` keywords using compiled schema: ```javascript ajv.addKeyword('range', { type: 'number', compile: function (sch, parentSchema) { var min = sch[0]; var max = sch[1]; return parentSchema.exclusiveRange === true ? function (data) { return data > min && data < max; } : function (data) { return data >= min && data <= max; } } }); var schema = { "range": [2, 4], "exclusiveRange": true }; var validate = ajv.compile(schema); console.log(validate(2.01)); // true console.log(validate(3.99)); // true console.log(validate(2)); // false console.log(validate(4)); // false ``` Several custom keywords (typeof, instanceof, range and propertyNames) are defined in [ajv-keywords](https://github.com/ajv-validator/ajv-keywords) package - they can be used for your schemas and as a starting point for your own custom keywords. See [Defining custom keywords](https://github.com/ajv-validator/ajv/blob/master/CUSTOM.md) for more details. ## Asynchronous schema compilation During asynchronous compilation remote references are loaded using supplied function. See `compileAsync` [method](#api-compileAsync) and `loadSchema` [option](#options). Example: ```javascript var ajv = new Ajv({ loadSchema: loadSchema }); ajv.compileAsync(schema).then(function (validate) { var valid = validate(data); // ... }); function loadSchema(uri) { return request.json(uri).then(function (res) { if (res.statusCode >= 400) throw new Error('Loading error: ' + res.statusCode); return res.body; }); } ``` __Please note__: [Option](#options) `missingRefs` should NOT be set to `"ignore"` or `"fail"` for asynchronous compilation to work. ## Asynchronous validation Example in Node.js REPL: https://tonicdev.com/esp/ajv-asynchronous-validation You can define custom formats and keywords that perform validation asynchronously by accessing database or some other service. You should add `async: true` in the keyword or format definition (see [addFormat](#api-addformat), [addKeyword](#api-addkeyword) and [Defining custom keywords](#defining-custom-keywords)). If your schema uses asynchronous formats/keywords or refers to some schema that contains them it should have `"$async": true` keyword so that Ajv can compile it correctly. If asynchronous format/keyword or reference to asynchronous schema is used in the schema without `$async` keyword Ajv will throw an exception during schema compilation. __Please note__: all asynchronous subschemas that are referenced from the current or other schemas should have `"$async": true` keyword as well, otherwise the schema compilation will fail. Validation function for an asynchronous custom format/keyword should return a promise that resolves with `true` or `false` (or rejects with `new Ajv.ValidationError(errors)` if you want to return custom errors from the keyword function). Ajv compiles asynchronous schemas to [es7 async functions](http://tc39.github.io/ecmascript-asyncawait/) that can optionally be transpiled with [nodent](https://github.com/MatAtBread/nodent). Async functions are supported in Node.js 7+ and all modern browsers. You can also supply any other transpiler as a function via `processCode` option. See [Options](#options). The compiled validation function has `$async: true` property (if the schema is asynchronous), so you can differentiate these functions if you are using both synchronous and asynchronous schemas. Validation result will be a promise that resolves with validated data or rejects with an exception `Ajv.ValidationError` that contains the array of validation errors in `errors` property. Example: ```javascript var ajv = new Ajv; // require('ajv-async')(ajv); ajv.addKeyword('idExists', { async: true, type: 'number', validate: checkIdExists }); function checkIdExists(schema, data) { return knex(schema.table) .select('id') .where('id', data) .then(function (rows) { return !!rows.length; // true if record is found }); } var schema = { "$async": true, "properties": { "userId": { "type": "integer", "idExists": { "table": "users" } }, "postId": { "type": "integer", "idExists": { "table": "posts" } } } }; var validate = ajv.compile(schema); validate({ userId: 1, postId: 19 }) .then(function (data) { console.log('Data is valid', data); // { userId: 1, postId: 19 } }) .catch(function (err) { if (!(err instanceof Ajv.ValidationError)) throw err; // data is invalid console.log('Validation errors:', err.errors); }); ``` ### Using transpilers with asynchronous validation functions. [ajv-async](https://github.com/ajv-validator/ajv-async) uses [nodent](https://github.com/MatAtBread/nodent) to transpile async functions. To use another transpiler you should separately install it (or load its bundle in the browser). #### Using nodent ```javascript var ajv = new Ajv; require('ajv-async')(ajv); // in the browser if you want to load ajv-async bundle separately you can: // window.ajvAsync(ajv); var validate = ajv.compile(schema); // transpiled es7 async function validate(data).then(successFunc).catch(errorFunc); ``` #### Using other transpilers ```javascript var ajv = new Ajv({ processCode: transpileFunc }); var validate = ajv.compile(schema); // transpiled es7 async function validate(data).then(successFunc).catch(errorFunc); ``` See [Options](#options). ## Security considerations JSON Schema, if properly used, can replace data sanitisation. It doesn't replace other API security considerations. It also introduces additional security aspects to consider. ##### Security contact To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. Please do NOT report security vulnerabilities via GitHub issues. ##### Untrusted schemas Ajv treats JSON schemas as trusted as your application code. This security model is based on the most common use case, when the schemas are static and bundled together with the application. If your schemas are received from untrusted sources (or generated from untrusted data) there are several scenarios you need to prevent: - compiling schemas can cause stack overflow (if they are too deep) - compiling schemas can be slow (e.g. [#557](https://github.com/ajv-validator/ajv/issues/557)) - validating certain data can be slow It is difficult to predict all the scenarios, but at the very least it may help to limit the size of untrusted schemas (e.g. limit JSON string length) and also the maximum schema object depth (that can be high for relatively small JSON strings). You also may want to mitigate slow regular expressions in `pattern` and `patternProperties` keywords. Regardless the measures you take, using untrusted schemas increases security risks. ##### Circular references in JavaScript objects Ajv does not support schemas and validated data that have circular references in objects. See [issue #802](https://github.com/ajv-validator/ajv/issues/802). An attempt to compile such schemas or validate such data would cause stack overflow (or will not complete in case of asynchronous validation). Depending on the parser you use, untrusted data can lead to circular references. ##### Security risks of trusted schemas Some keywords in JSON Schemas can lead to very slow validation for certain data. These keywords include (but may be not limited to): - `pattern` and `format` for large strings - in some cases using `maxLength` can help mitigate it, but certain regular expressions can lead to exponential validation time even with relatively short strings (see [ReDoS attack](#redos-attack)). - `patternProperties` for large property names - use `propertyNames` to mitigate, but some regular expressions can have exponential evaluation time as well. - `uniqueItems` for large non-scalar arrays - use `maxItems` to mitigate __Please note__: The suggestions above to prevent slow validation would only work if you do NOT use `allErrors: true` in production code (using it would continue validation after validation errors). You can validate your JSON schemas against [this meta-schema](https://github.com/ajv-validator/ajv/blob/master/lib/refs/json-schema-secure.json) to check that these recommendations are followed: ```javascript const isSchemaSecure = ajv.compile(require('ajv/lib/refs/json-schema-secure.json')); const schema1 = {format: 'email'}; isSchemaSecure(schema1); // false const schema2 = {format: 'email', maxLength: MAX_LENGTH}; isSchemaSecure(schema2); // true ``` __Please note__: following all these recommendation is not a guarantee that validation of untrusted data is safe - it can still lead to some undesirable results. ##### Content Security Policies (CSP) See [Ajv and Content Security Policies (CSP)](#ajv-and-content-security-policies-csp) ## ReDoS attack Certain regular expressions can lead to the exponential evaluation time even with relatively short strings. Please assess the regular expressions you use in the schemas on their vulnerability to this attack - see [safe-regex](https://github.com/substack/safe-regex), for example. __Please note__: some formats that Ajv implements use [regular expressions](https://github.com/ajv-validator/ajv/blob/master/lib/compile/formats.js) that can be vulnerable to ReDoS attack, so if you use Ajv to validate data from untrusted sources __it is strongly recommended__ to consider the following: - making assessment of "format" implementations in Ajv. - using `format: 'fast'` option that simplifies some of the regular expressions (although it does not guarantee that they are safe). - replacing format implementations provided by Ajv with your own implementations of "format" keyword that either uses different regular expressions or another approach to format validation. Please see [addFormat](#api-addformat) method. - disabling format validation by ignoring "format" keyword with option `format: false` Whatever mitigation you choose, please assume all formats provided by Ajv as potentially unsafe and make your own assessment of their suitability for your validation scenarios. ## Filtering data With [option `removeAdditional`](#options) (added by [andyscott](https://github.com/andyscott)) you can filter data during the validation. This option modifies original data. Example: ```javascript var ajv = new Ajv({ removeAdditional: true }); var schema = { "additionalProperties": false, "properties": { "foo": { "type": "number" }, "bar": { "additionalProperties": { "type": "number" }, "properties": { "baz": { "type": "string" } } } } } var data = { "foo": 0, "additional1": 1, // will be removed; `additionalProperties` == false "bar": { "baz": "abc", "additional2": 2 // will NOT be removed; `additionalProperties` != false }, } var validate = ajv.compile(schema); console.log(validate(data)); // true console.log(data); // { "foo": 0, "bar": { "baz": "abc", "additional2": 2 } ``` If `removeAdditional` option in the example above were `"all"` then both `additional1` and `additional2` properties would have been removed. If the option were `"failing"` then property `additional1` would have been removed regardless of its value and property `additional2` would have been removed only if its value were failing the schema in the inner `additionalProperties` (so in the example above it would have stayed because it passes the schema, but any non-number would have been removed). __Please note__: If you use `removeAdditional` option with `additionalProperties` keyword inside `anyOf`/`oneOf` keywords your validation can fail with this schema, for example: ```json { "type": "object", "oneOf": [ { "properties": { "foo": { "type": "string" } }, "required": [ "foo" ], "additionalProperties": false }, { "properties": { "bar": { "type": "integer" } }, "required": [ "bar" ], "additionalProperties": false } ] } ``` The intention of the schema above is to allow objects with either the string property "foo" or the integer property "bar", but not with both and not with any other properties. With the option `removeAdditional: true` the validation will pass for the object `{ "foo": "abc"}` but will fail for the object `{"bar": 1}`. It happens because while the first subschema in `oneOf` is validated, the property `bar` is removed because it is an additional property according to the standard (because it is not included in `properties` keyword in the same schema). While this behaviour is unexpected (issues [#129](https://github.com/ajv-validator/ajv/issues/129), [#134](https://github.com/ajv-validator/ajv/issues/134)), it is correct. To have the expected behaviour (both objects are allowed and additional properties are removed) the schema has to be refactored in this way: ```json { "type": "object", "properties": { "foo": { "type": "string" }, "bar": { "type": "integer" } }, "additionalProperties": false, "oneOf": [ { "required": [ "foo" ] }, { "required": [ "bar" ] } ] } ``` The schema above is also more efficient - it will compile into a faster function. ## Assigning defaults With [option `useDefaults`](#options) Ajv will assign values from `default` keyword in the schemas of `properties` and `items` (when it is the array of schemas) to the missing properties and items. With the option value `"empty"` properties and items equal to `null` or `""` (empty string) will be considered missing and assigned defaults. This option modifies original data. __Please note__: the default value is inserted in the generated validation code as a literal, so the value inserted in the data will be the deep clone of the default in the schema. Example 1 (`default` in `properties`): ```javascript var ajv = new Ajv({ useDefaults: true }); var schema = { "type": "object", "properties": { "foo": { "type": "number" }, "bar": { "type": "string", "default": "baz" } }, "required": [ "foo", "bar" ] }; var data = { "foo": 1 }; var validate = ajv.compile(schema); console.log(validate(data)); // true console.log(data); // { "foo": 1, "bar": "baz" } ``` Example 2 (`default` in `items`): ```javascript var schema = { "type": "array", "items": [ { "type": "number" }, { "type": "string", "default": "foo" } ] } var data = [ 1 ]; var validate = ajv.compile(schema); console.log(validate(data)); // true console.log(data); // [ 1, "foo" ] ``` `default` keywords in other cases are ignored: - not in `properties` or `items` subschemas - in schemas inside `anyOf`, `oneOf` and `not` (see [#42](https://github.com/ajv-validator/ajv/issues/42)) - in `if` subschema of `switch` keyword - in schemas generated by custom macro keywords The [`strictDefaults` option](#options) customizes Ajv's behavior for the defaults that Ajv ignores (`true` raises an error, and `"log"` outputs a warning). ## Coercing data types When you are validating user inputs all your data properties are usually strings. The option `coerceTypes` allows you to have your data types coerced to the types specified in your schema `type` keywords, both to pass the validation and to use the correctly typed data afterwards. This option modifies original data. __Please note__: if you pass a scalar value to the validating function its type will be coerced and it will pass the validation, but the value of the variable you pass won't be updated because scalars are passed by value. Example 1: ```javascript var ajv = new Ajv({ coerceTypes: true }); var schema = { "type": "object", "properties": { "foo": { "type": "number" }, "bar": { "type": "boolean" } }, "required": [ "foo", "bar" ] }; var data = { "foo": "1", "bar": "false" }; var validate = ajv.compile(schema); console.log(validate(data)); // true console.log(data); // { "foo": 1, "bar": false } ``` Example 2 (array coercions): ```javascript var ajv = new Ajv({ coerceTypes: 'array' }); var schema = { "properties": { "foo": { "type": "array", "items": { "type": "number" } }, "bar": { "type": "boolean" } } }; var data = { "foo": "1", "bar": ["false"] }; var validate = ajv.compile(schema); console.log(validate(data)); // true console.log(data); // { "foo": [1], "bar": false } ``` The coercion rules, as you can see from the example, are different from JavaScript both to validate user input as expected and to have the coercion reversible (to correctly validate cases where different types are defined in subschemas of "anyOf" and other compound keywords). See [Coercion rules](https://github.com/ajv-validator/ajv/blob/master/COERCION.md) for details. ## API ##### new Ajv(Object options) -&gt; Object Create Ajv instance. ##### .compile(Object schema) -&gt; Function&lt;Object data&gt; Generate validating function and cache the compiled schema for future use. Validating function returns a boolean value. This function has properties `errors` and `schema`. Errors encountered during the last validation are assigned to `errors` property (it is assigned `null` if there was no errors). `schema` property contains the reference to the original schema. The schema passed to this method will be validated against meta-schema unless `validateSchema` option is false. If schema is invalid, an error will be thrown. See [options](#options). ##### <a name="api-compileAsync"></a>.compileAsync(Object schema [, Boolean meta] [, Function callback]) -&gt; Promise Asynchronous version of `compile` method that loads missing remote schemas using asynchronous function in `options.loadSchema`. This function returns a Promise that resolves to a validation function. An optional callback passed to `compileAsync` will be called with 2 parameters: error (or null) and validating function. The returned promise will reject (and the callback will be called with an error) when: - missing schema can't be loaded (`loadSchema` returns a Promise that rejects). - a schema containing a missing reference is loaded, but the reference cannot be resolved. - schema (or some loaded/referenced schema) is invalid. The function compiles schema and loads the first missing schema (or meta-schema) until all missing schemas are loaded. You can asynchronously compile meta-schema by passing `true` as the second parameter. See example in [Asynchronous compilation](#asynchronous-schema-compilation). ##### .validate(Object schema|String key|String ref, data) -&gt; Boolean Validate data using passed schema (it will be compiled and cached). Instead of the schema you can use the key that was previously passed to `addSchema`, the schema id if it was present in the schema or any previously resolved reference. Validation errors will be available in the `errors` property of Ajv instance (`null` if there were no errors). __Please note__: every time this method is called the errors are overwritten so you need to copy them to another variable if you want to use them later. If the schema is asynchronous (has `$async` keyword on the top level) this method returns a Promise. See [Asynchronous validation](#asynchronous-validation). ##### .addSchema(Array&lt;Object&gt;|Object schema [, String key]) -&gt; Ajv Add schema(s) to validator instance. This method does not compile schemas (but it still validates them). Because of that dependencies can be added in any order and circular dependencies are supported. It also prevents unnecessary compilation of schemas that are containers for other schemas but not used as a whole. Array of schemas can be passed (schemas should have ids), the second parameter will be ignored. Key can be passed that can be used to reference the schema and will be used as the schema id if there is no id inside the schema. If the key is not passed, the schema id will be used as the key. Once the schema is added, it (and all the references inside it) can be referenced in other schemas and used to validate data. Although `addSchema` does not compile schemas, explicit compilation is not required - the schema will be compiled when it is used first time. By default the schema is validated against meta-schema before it is added, and if the schema does not pass validation the exception is thrown. This behaviour is controlled by `validateSchema` option. __Please note__: Ajv uses the [method chaining syntax](https://en.wikipedia.org/wiki/Method_chaining) for all methods with the prefix `add*` and `remove*`. This allows you to do nice things like the following. ```javascript var validate = new Ajv().addSchema(schema).addFormat(name, regex).getSchema(uri); ``` ##### .addMetaSchema(Array&lt;Object&gt;|Object schema [, String key]) -&gt; Ajv Adds meta schema(s) that can be used to validate other schemas. That function should be used instead of `addSchema` because there may be instance options that would compile a meta schema incorrectly (at the moment it is `removeAdditional` option). There is no need to explicitly add draft-07 meta schema (http://json-schema.org/draft-07/schema) - it is added by default, unless option `meta` is set to `false`. You only need to use it if you have a changed meta-schema that you want to use to validate your schemas. See `validateSchema`. ##### <a name="api-validateschema"></a>.validateSchema(Object schema) -&gt; Boolean Validates schema. This method should be used to validate schemas rather than `validate` due to the inconsistency of `uri` format in JSON Schema standard. By default this method is called automatically when the schema is added, so you rarely need to use it directly. If schema doesn't have `$schema` property, it is validated against draft 6 meta-schema (option `meta` should not be false). If schema has `$schema` property, then the schema with this id (that should be previously added) is used to validate passed schema. Errors will be available at `ajv.errors`. ##### .getSchema(String key) -&gt; Function&lt;Object data&gt; Retrieve compiled schema previously added with `addSchema` by the key passed to `addSchema` or by its full reference (id). The returned validating function has `schema` property with the reference to the original schema. ##### .removeSchema([Object schema|String key|String ref|RegExp pattern]) -&gt; Ajv Remove added/cached schema. Even if schema is referenced by other schemas it can be safely removed as dependent schemas have local references. Schema can be removed using: - key passed to `addSchema` - it's full reference (id) - RegExp that should match schema id or key (meta-schemas won't be removed) - actual schema object that will be stable-stringified to remove schema from cache If no parameter is passed all schemas but meta-schemas will be removed and the cache will be cleared. ##### <a name="api-addformat"></a>.addFormat(String name, String|RegExp|Function|Object format) -&gt; Ajv Add custom format to validate strings or numbers. It can also be used to replace pre-defined formats for Ajv instance. Strings are converted to RegExp. Function should return validation result as `true` or `false`. If object is passed it should have properties `validate`, `compare` and `async`: - _validate_: a string, RegExp or a function as described above. - _compare_: an optional comparison function that accepts two strings and compares them according to the format meaning. This function is used with keywords `formatMaximum`/`formatMinimum` (defined in [ajv-keywords](https://github.com/ajv-validator/ajv-keywords) package). It should return `1` if the first value is bigger than the second value, `-1` if it is smaller and `0` if it is equal. - _async_: an optional `true` value if `validate` is an asynchronous function; in this case it should return a promise that resolves with a value `true` or `false`. - _type_: an optional type of data that the format applies to. It can be `"string"` (default) or `"number"` (see https://github.com/ajv-validator/ajv/issues/291#issuecomment-259923858). If the type of data is different, the validation will pass. Custom formats can be also added via `formats` option. ##### <a name="api-addkeyword"></a>.addKeyword(String keyword, Object definition) -&gt; Ajv Add custom validation keyword to Ajv instance. Keyword should be different from all standard JSON Schema keywords and different from previously defined keywords. There is no way to redefine keywords or to remove keyword definition from the instance. Keyword must start with a letter, `_` or `$`, and may continue with letters, numbers, `_`, `$`, or `-`. It is recommended to use an application-specific prefix for keywords to avoid current and future name collisions. Example Keywords: - `"xyz-example"`: valid, and uses prefix for the xyz project to avoid name collisions. - `"example"`: valid, but not recommended as it could collide with future versions of JSON Schema etc. - `"3-example"`: invalid as numbers are not allowed to be the first character in a keyword Keyword definition is an object with the following properties: - _type_: optional string or array of strings with data type(s) that the keyword applies to. If not present, the keyword will apply to all types. - _validate_: validating function - _compile_: compiling function - _macro_: macro function - _inline_: compiling function that returns code (as string) - _schema_: an optional `false` value used with "validate" keyword to not pass schema - _metaSchema_: an optional meta-schema for keyword schema - _dependencies_: an optional list of properties that must be present in the parent schema - it will be checked during schema compilation - _modifying_: `true` MUST be passed if keyword modifies data - _statements_: `true` can be passed in case inline keyword generates statements (as opposed to expression) - _valid_: pass `true`/`false` to pre-define validation result, the result returned from validation function will be ignored. This option cannot be used with macro keywords. - _$data_: an optional `true` value to support [$data reference](#data-reference) as the value of custom keyword. The reference will be resolved at validation time. If the keyword has meta-schema it would be extended to allow $data and it will be used to validate the resolved value. Supporting $data reference requires that keyword has validating function (as the only option or in addition to compile, macro or inline function). - _async_: an optional `true` value if the validation function is asynchronous (whether it is compiled or passed in _validate_ property); in this case it should return a promise that resolves with a value `true` or `false`. This option is ignored in case of "macro" and "inline" keywords. - _errors_: an optional boolean or string `"full"` indicating whether keyword returns errors. If this property is not set Ajv will determine if the errors were set in case of failed validation. _compile_, _macro_ and _inline_ are mutually exclusive, only one should be used at a time. _validate_ can be used separately or in addition to them to support $data reference. __Please note__: If the keyword is validating data type that is different from the type(s) in its definition, the validation function will not be called (and expanded macro will not be used), so there is no need to check for data type inside validation function or inside schema returned by macro function (unless you want to enforce a specific type and for some reason do not want to use a separate `type` keyword for that). In the same way as standard keywords work, if the keyword does not apply to the data type being validated, the validation of this keyword will succeed. See [Defining custom keywords](#defining-custom-keywords) for more details. ##### .getKeyword(String keyword) -&gt; Object|Boolean Returns custom keyword definition, `true` for pre-defined keywords and `false` if the keyword is unknown. ##### .removeKeyword(String keyword) -&gt; Ajv Removes custom or pre-defined keyword so you can redefine them. While this method can be used to extend pre-defined keywords, it can also be used to completely change their meaning - it may lead to unexpected results. __Please note__: schemas compiled before the keyword is removed will continue to work without changes. To recompile schemas use `removeSchema` method and compile them again. ##### .errorsText([Array&lt;Object&gt; errors [, Object options]]) -&gt; String Returns the text with all errors in a String. Options can have properties `separator` (string used to separate errors, ", " by default) and `dataVar` (the variable name that dataPaths are prefixed with, "data" by default). ## Options Defaults: ```javascript { // validation and reporting options: $data: false, allErrors: false, verbose: false, $comment: false, // NEW in Ajv version 6.0 jsonPointers: false, uniqueItems: true, unicode: true, nullable: false, format: 'fast', formats: {}, unknownFormats: true, schemas: {}, logger: undefined, // referenced schema options: schemaId: '$id', missingRefs: true, extendRefs: 'ignore', // recommended 'fail' loadSchema: undefined, // function(uri: string): Promise {} // options to modify validated data: removeAdditional: false, useDefaults: false, coerceTypes: false, // strict mode options strictDefaults: false, strictKeywords: false, strictNumbers: false, // asynchronous validation options: transpile: undefined, // requires ajv-async package // advanced options: meta: true, validateSchema: true, addUsedSchema: true, inlineRefs: true, passContext: false, loopRequired: Infinity, ownProperties: false, multipleOfPrecision: false, errorDataPath: 'object', // deprecated messages: true, sourceCode: false, processCode: undefined, // function (str: string, schema: object): string {} cache: new Cache, serialize: undefined } ``` ##### Validation and reporting options - _$data_: support [$data references](#data-reference). Draft 6 meta-schema that is added by default will be extended to allow them. If you want to use another meta-schema you need to use $dataMetaSchema method to add support for $data reference. See [API](#api). - _allErrors_: check all rules collecting all errors. Default is to return after the first error. - _verbose_: include the reference to the part of the schema (`schema` and `parentSchema`) and validated data in errors (false by default). - _$comment_ (NEW in Ajv version 6.0): log or pass the value of `$comment` keyword to a function. Option values: - `false` (default): ignore $comment keyword. - `true`: log the keyword value to console. - function: pass the keyword value, its schema path and root schema to the specified function - _jsonPointers_: set `dataPath` property of errors using [JSON Pointers](https://tools.ietf.org/html/rfc6901) instead of JavaScript property access notation. - _uniqueItems_: validate `uniqueItems` keyword (true by default). - _unicode_: calculate correct length of strings with unicode pairs (true by default). Pass `false` to use `.length` of strings that is faster, but gives "incorrect" lengths of strings with unicode pairs - each unicode pair is counted as two characters. - _nullable_: support keyword "nullable" from [Open API 3 specification](https://swagger.io/docs/specification/data-models/data-types/). - _format_: formats validation mode. Option values: - `"fast"` (default) - simplified and fast validation (see [Formats](#formats) for details of which formats are available and affected by this option). - `"full"` - more restrictive and slow validation. E.g., 25:00:00 and 2015/14/33 will be invalid time and date in 'full' mode but it will be valid in 'fast' mode. - `false` - ignore all format keywords. - _formats_: an object with custom formats. Keys and values will be passed to `addFormat` method. - _keywords_: an object with custom keywords. Keys and values will be passed to `addKeyword` method. - _unknownFormats_: handling of unknown formats. Option values: - `true` (default) - if an unknown format is encountered the exception is thrown during schema compilation. If `format` keyword value is [$data reference](#data-reference) and it is unknown the validation will fail. - `[String]` - an array of unknown format names that will be ignored. This option can be used to allow usage of third party schemas with format(s) for which you don't have definitions, but still fail if another unknown format is used. If `format` keyword value is [$data reference](#data-reference) and it is not in this array the validation will fail. - `"ignore"` - to log warning during schema compilation and always pass validation (the default behaviour in versions before 5.0.0). This option is not recommended, as it allows to mistype format name and it won't be validated without any error message. This behaviour is required by JSON Schema specification. - _schemas_: an array or object of schemas that will be added to the instance. In case you pass the array the schemas must have IDs in them. When the object is passed the method `addSchema(value, key)` will be called for each schema in this object. - _logger_: sets the logging method. Default is the global `console` object that should have methods `log`, `warn` and `error`. See [Error logging](#error-logging). Option values: - custom logger - it should have methods `log`, `warn` and `error`. If any of these methods is missing an exception will be thrown. - `false` - logging is disabled. ##### Referenced schema options - _schemaId_: this option defines which keywords are used as schema URI. Option value: - `"$id"` (default) - only use `$id` keyword as schema URI (as specified in JSON Schema draft-06/07), ignore `id` keyword (if it is present a warning will be logged). - `"id"` - only use `id` keyword as schema URI (as specified in JSON Schema draft-04), ignore `$id` keyword (if it is present a warning will be logged). - `"auto"` - use both `$id` and `id` keywords as schema URI. If both are present (in the same schema object) and different the exception will be thrown during schema compilation. - _missingRefs_: handling of missing referenced schemas. Option values: - `true` (default) - if the reference cannot be resolved during compilation the exception is thrown. The thrown error has properties `missingRef` (with hash fragment) and `missingSchema` (without it). Both properties are resolved relative to the current base id (usually schema id, unless it was substituted). - `"ignore"` - to log error during compilation and always pass validation. - `"fail"` - to log error and successfully compile schema but fail validation if this rule is checked. - _extendRefs_: validation of other keywords when `$ref` is present in the schema. Option values: - `"ignore"` (default) - when `$ref` is used other keywords are ignored (as per [JSON Reference](https://tools.ietf.org/html/draft-pbryan-zyp-json-ref-03#section-3) standard). A warning will be logged during the schema compilation. - `"fail"` (recommended) - if other validation keywords are used together with `$ref` the exception will be thrown when the schema is compiled. This option is recommended to make sure schema has no keywords that are ignored, which can be confusing. - `true` - validate all keywords in the schemas with `$ref` (the default behaviour in versions before 5.0.0). - _loadSchema_: asynchronous function that will be used to load remote schemas when `compileAsync` [method](#api-compileAsync) is used and some reference is missing (option `missingRefs` should NOT be 'fail' or 'ignore'). This function should accept remote schema uri as a parameter and return a Promise that resolves to a schema. See example in [Asynchronous compilation](#asynchronous-schema-compilation). ##### Options to modify validated data - _removeAdditional_: remove additional properties - see example in [Filtering data](#filtering-data). This option is not used if schema is added with `addMetaSchema` method. Option values: - `false` (default) - not to remove additional properties - `"all"` - all additional properties are removed, regardless of `additionalProperties` keyword in schema (and no validation is made for them). - `true` - only additional properties with `additionalProperties` keyword equal to `false` are removed. - `"failing"` - additional properties that fail schema validation will be removed (where `additionalProperties` keyword is `false` or schema). - _useDefaults_: replace missing or undefined properties and items with the values from corresponding `default` keywords. Default behaviour is to ignore `default` keywords. This option is not used if schema is added with `addMetaSchema` method. See examples in [Assigning defaults](#assigning-defaults). Option values: - `false` (default) - do not use defaults - `true` - insert defaults by value (object literal is used). - `"empty"` - in addition to missing or undefined, use defaults for properties and items that are equal to `null` or `""` (an empty string). - `"shared"` (deprecated) - insert defaults by reference. If the default is an object, it will be shared by all instances of validated data. If you modify the inserted default in the validated data, it will be modified in the schema as well. - _coerceTypes_: change data type of data to match `type` keyword. See the example in [Coercing data types](#coercing-data-types) and [coercion rules](https://github.com/ajv-validator/ajv/blob/master/COERCION.md). Option values: - `false` (default) - no type coercion. - `true` - coerce scalar data types. - `"array"` - in addition to coercions between scalar types, coerce scalar data to an array with one element and vice versa (as required by the schema). ##### Strict mode options - _strictDefaults_: report ignored `default` keywords in schemas. Option values: - `false` (default) - ignored defaults are not reported - `true` - if an ignored default is present, throw an error - `"log"` - if an ignored default is present, log warning - _strictKeywords_: report unknown keywords in schemas. Option values: - `false` (default) - unknown keywords are not reported - `true` - if an unknown keyword is present, throw an error - `"log"` - if an unknown keyword is present, log warning - _strictNumbers_: validate numbers strictly, failing validation for NaN and Infinity. Option values: - `false` (default) - NaN or Infinity will pass validation for numeric types - `true` - NaN or Infinity will not pass validation for numeric types ##### Asynchronous validation options - _transpile_: Requires [ajv-async](https://github.com/ajv-validator/ajv-async) package. It determines whether Ajv transpiles compiled asynchronous validation function. Option values: - `undefined` (default) - transpile with [nodent](https://github.com/MatAtBread/nodent) if async functions are not supported. - `true` - always transpile with nodent. - `false` - do not transpile; if async functions are not supported an exception will be thrown. ##### Advanced options - _meta_: add [meta-schema](http://json-schema.org/documentation.html) so it can be used by other schemas (true by default). If an object is passed, it will be used as the default meta-schema for schemas that have no `$schema` keyword. This default meta-schema MUST have `$schema` keyword. - _validateSchema_: validate added/compiled schemas against meta-schema (true by default). `$schema` property in the schema can be http://json-schema.org/draft-07/schema or absent (draft-07 meta-schema will be used) or can be a reference to the schema previously added with `addMetaSchema` method. Option values: - `true` (default) - if the validation fails, throw the exception. - `"log"` - if the validation fails, log error. - `false` - skip schema validation. - _addUsedSchema_: by default methods `compile` and `validate` add schemas to the instance if they have `$id` (or `id`) property that doesn't start with "#". If `$id` is present and it is not unique the exception will be thrown. Set this option to `false` to skip adding schemas to the instance and the `$id` uniqueness check when these methods are used. This option does not affect `addSchema` method. - _inlineRefs_: Affects compilation of referenced schemas. Option values: - `true` (default) - the referenced schemas that don't have refs in them are inlined, regardless of their size - that substantially improves performance at the cost of the bigger size of compiled schema functions. - `false` - to not inline referenced schemas (they will be compiled as separate functions). - integer number - to limit the maximum number of keywords of the schema that will be inlined. - _passContext_: pass validation context to custom keyword functions. If this option is `true` and you pass some context to the compiled validation function with `validate.call(context, data)`, the `context` will be available as `this` in your custom keywords. By default `this` is Ajv instance. - _loopRequired_: by default `required` keyword is compiled into a single expression (or a sequence of statements in `allErrors` mode). In case of a very large number of properties in this keyword it may result in a very big validation function. Pass integer to set the number of properties above which `required` keyword will be validated in a loop - smaller validation function size but also worse performance. - _ownProperties_: by default Ajv iterates over all enumerable object properties; when this option is `true` only own enumerable object properties (i.e. found directly on the object rather than on its prototype) are iterated. Contributed by @mbroadst. - _multipleOfPrecision_: by default `multipleOf` keyword is validated by comparing the result of division with parseInt() of that result. It works for dividers that are bigger than 1. For small dividers such as 0.01 the result of the division is usually not integer (even when it should be integer, see issue [#84](https://github.com/ajv-validator/ajv/issues/84)). If you need to use fractional dividers set this option to some positive integer N to have `multipleOf` validated using this formula: `Math.abs(Math.round(division) - division) < 1e-N` (it is slower but allows for float arithmetics deviations). - _errorDataPath_ (deprecated): set `dataPath` to point to 'object' (default) or to 'property' when validating keywords `required`, `additionalProperties` and `dependencies`. - _messages_: Include human-readable messages in errors. `true` by default. `false` can be passed when custom messages are used (e.g. with [ajv-i18n](https://github.com/ajv-validator/ajv-i18n)). - _sourceCode_: add `sourceCode` property to validating function (for debugging; this code can be different from the result of toString call). - _processCode_: an optional function to process generated code before it is passed to Function constructor. It can be used to either beautify (the validating function is generated without line-breaks) or to transpile code. Starting from version 5.0.0 this option replaced options: - `beautify` that formatted the generated function using [js-beautify](https://github.com/beautify-web/js-beautify). If you want to beautify the generated code pass a function calling `require('js-beautify').js_beautify` as `processCode: code => js_beautify(code)`. - `transpile` that transpiled asynchronous validation function. You can still use `transpile` option with [ajv-async](https://github.com/ajv-validator/ajv-async) package. See [Asynchronous validation](#asynchronous-validation) for more information. - _cache_: an optional instance of cache to store compiled schemas using stable-stringified schema as a key. For example, set-associative cache [sacjs](https://github.com/epoberezkin/sacjs) can be used. If not passed then a simple hash is used which is good enough for the common use case (a limited number of statically defined schemas). Cache should have methods `put(key, value)`, `get(key)`, `del(key)` and `clear()`. - _serialize_: an optional function to serialize schema to cache key. Pass `false` to use schema itself as a key (e.g., if WeakMap used as a cache). By default [fast-json-stable-stringify](https://github.com/epoberezkin/fast-json-stable-stringify) is used. ## Validation errors In case of validation failure, Ajv assigns the array of errors to `errors` property of validation function (or to `errors` property of Ajv instance when `validate` or `validateSchema` methods were called). In case of [asynchronous validation](#asynchronous-validation), the returned promise is rejected with exception `Ajv.ValidationError` that has `errors` property. ### Error objects Each error is an object with the following properties: - _keyword_: validation keyword. - _dataPath_: the path to the part of the data that was validated. By default `dataPath` uses JavaScript property access notation (e.g., `".prop[1].subProp"`). When the option `jsonPointers` is true (see [Options](#options)) `dataPath` will be set using JSON pointer standard (e.g., `"/prop/1/subProp"`). - _schemaPath_: the path (JSON-pointer as a URI fragment) to the schema of the keyword that failed validation. - _params_: the object with the additional information about error that can be used to create custom error messages (e.g., using [ajv-i18n](https://github.com/ajv-validator/ajv-i18n) package). See below for parameters set by all keywords. - _message_: the standard error message (can be excluded with option `messages` set to false). - _schema_: the schema of the keyword (added with `verbose` option). - _parentSchema_: the schema containing the keyword (added with `verbose` option) - _data_: the data validated by the keyword (added with `verbose` option). __Please note__: `propertyNames` keyword schema validation errors have an additional property `propertyName`, `dataPath` points to the object. After schema validation for each property name, if it is invalid an additional error is added with the property `keyword` equal to `"propertyNames"`. ### Error parameters Properties of `params` object in errors depend on the keyword that failed validation. - `maxItems`, `minItems`, `maxLength`, `minLength`, `maxProperties`, `minProperties` - property `limit` (number, the schema of the keyword). - `additionalItems` - property `limit` (the maximum number of allowed items in case when `items` keyword is an array of schemas and `additionalItems` is false). - `additionalProperties` - property `additionalProperty` (the property not used in `properties` and `patternProperties` keywords). - `dependencies` - properties: - `property` (dependent property), - `missingProperty` (required missing dependency - only the first one is reported currently) - `deps` (required dependencies, comma separated list as a string), - `depsCount` (the number of required dependencies). - `format` - property `format` (the schema of the keyword). - `maximum`, `minimum` - properties: - `limit` (number, the schema of the keyword), - `exclusive` (boolean, the schema of `exclusiveMaximum` or `exclusiveMinimum`), - `comparison` (string, comparison operation to compare the data to the limit, with the data on the left and the limit on the right; can be "<", "<=", ">", ">=") - `multipleOf` - property `multipleOf` (the schema of the keyword) - `pattern` - property `pattern` (the schema of the keyword) - `required` - property `missingProperty` (required property that is missing). - `propertyNames` - property `propertyName` (an invalid property name). - `patternRequired` (in ajv-keywords) - property `missingPattern` (required pattern that did not match any property). - `type` - property `type` (required type(s), a string, can be a comma-separated list) - `uniqueItems` - properties `i` and `j` (indices of duplicate items). - `const` - property `allowedValue` pointing to the value (the schema of the keyword). - `enum` - property `allowedValues` pointing to the array of values (the schema of the keyword). - `$ref` - property `ref` with the referenced schema URI. - `oneOf` - property `passingSchemas` (array of indices of passing schemas, null if no schema passes). - custom keywords (in case keyword definition doesn't create errors) - property `keyword` (the keyword name). ### Error logging Using the `logger` option when initiallizing Ajv will allow you to define custom logging. Here you can build upon the exisiting logging. The use of other logging packages is supported as long as the package or its associated wrapper exposes the required methods. If any of the required methods are missing an exception will be thrown. - **Required Methods**: `log`, `warn`, `error` ```javascript var otherLogger = new OtherLogger(); var ajv = new Ajv({ logger: { log: console.log.bind(console), warn: function warn() { otherLogger.logWarn.apply(otherLogger, arguments); }, error: function error() { otherLogger.logError.apply(otherLogger, arguments); console.error.apply(console, arguments); } } }); ``` ## Plugins Ajv can be extended with plugins that add custom keywords, formats or functions to process generated code. When such plugin is published as npm package it is recommended that it follows these conventions: - it exports a function - this function accepts ajv instance as the first parameter and returns the same instance to allow chaining - this function can accept an optional configuration as the second parameter If you have published a useful plugin please submit a PR to add it to the next section. ## Related packages - [ajv-async](https://github.com/ajv-validator/ajv-async) - plugin to configure async validation mode - [ajv-bsontype](https://github.com/BoLaMN/ajv-bsontype) - plugin to validate mongodb's bsonType formats - [ajv-cli](https://github.com/jessedc/ajv-cli) - command line interface - [ajv-errors](https://github.com/ajv-validator/ajv-errors) - plugin for custom error messages - [ajv-i18n](https://github.com/ajv-validator/ajv-i18n) - internationalised error messages - [ajv-istanbul](https://github.com/ajv-validator/ajv-istanbul) - plugin to instrument generated validation code to measure test coverage of your schemas - [ajv-keywords](https://github.com/ajv-validator/ajv-keywords) - plugin with custom validation keywords (select, typeof, etc.) - [ajv-merge-patch](https://github.com/ajv-validator/ajv-merge-patch) - plugin with keywords $merge and $patch - [ajv-pack](https://github.com/ajv-validator/ajv-pack) - produces a compact module exporting validation functions - [ajv-formats-draft2019](https://github.com/luzlab/ajv-formats-draft2019) - format validators for draft2019 that aren't already included in ajv (ie. `idn-hostname`, `idn-email`, `iri`, `iri-reference` and `duration`). ## Some packages using Ajv - [webpack](https://github.com/webpack/webpack) - a module bundler. Its main purpose is to bundle JavaScript files for usage in a browser - [jsonscript-js](https://github.com/JSONScript/jsonscript-js) - the interpreter for [JSONScript](http://www.jsonscript.org) - scripted processing of existing endpoints and services - [osprey-method-handler](https://github.com/mulesoft-labs/osprey-method-handler) - Express middleware for validating requests and responses based on a RAML method object, used in [osprey](https://github.com/mulesoft/osprey) - validating API proxy generated from a RAML definition - [har-validator](https://github.com/ahmadnassri/har-validator) - HTTP Archive (HAR) validator - [jsoneditor](https://github.com/josdejong/jsoneditor) - a web-based tool to view, edit, format, and validate JSON http://jsoneditoronline.org - [JSON Schema Lint](https://github.com/nickcmaynard/jsonschemalint) - a web tool to validate JSON/YAML document against a single JSON Schema http://jsonschemalint.com - [objection](https://github.com/vincit/objection.js) - SQL-friendly ORM for Node.js - [table](https://github.com/gajus/table) - formats data into a string table - [ripple-lib](https://github.com/ripple/ripple-lib) - a JavaScript API for interacting with [Ripple](https://ripple.com) in Node.js and the browser - [restbase](https://github.com/wikimedia/restbase) - distributed storage with REST API & dispatcher for backend services built to provide a low-latency & high-throughput API for Wikipedia / Wikimedia content - [hippie-swagger](https://github.com/CacheControl/hippie-swagger) - [Hippie](https://github.com/vesln/hippie) wrapper that provides end to end API testing with swagger validation - [react-form-controlled](https://github.com/seeden/react-form-controlled) - React controlled form components with validation - [rabbitmq-schema](https://github.com/tjmehta/rabbitmq-schema) - a schema definition module for RabbitMQ graphs and messages - [@query/schema](https://www.npmjs.com/package/@query/schema) - stream filtering with a URI-safe query syntax parsing to JSON Schema - [chai-ajv-json-schema](https://github.com/peon374/chai-ajv-json-schema) - chai plugin to us JSON Schema with expect in mocha tests - [grunt-jsonschema-ajv](https://github.com/SignpostMarv/grunt-jsonschema-ajv) - Grunt plugin for validating files against JSON Schema - [extract-text-webpack-plugin](https://github.com/webpack-contrib/extract-text-webpack-plugin) - extract text from bundle into a file - [electron-builder](https://github.com/electron-userland/electron-builder) - a solution to package and build a ready for distribution Electron app - [addons-linter](https://github.com/mozilla/addons-linter) - Mozilla Add-ons Linter - [gh-pages-generator](https://github.com/epoberezkin/gh-pages-generator) - multi-page site generator converting markdown files to GitHub pages - [ESLint](https://github.com/eslint/eslint) - the pluggable linting utility for JavaScript and JSX ## Tests ``` npm install git submodule update --init npm test ``` ## Contributing All validation functions are generated using doT templates in [dot](https://github.com/ajv-validator/ajv/tree/master/lib/dot) folder. Templates are precompiled so doT is not a run-time dependency. `npm run build` - compiles templates to [dotjs](https://github.com/ajv-validator/ajv/tree/master/lib/dotjs) folder. `npm run watch` - automatically compiles templates when files in dot folder change Please see [Contributing guidelines](https://github.com/ajv-validator/ajv/blob/master/CONTRIBUTING.md) ## Changes history See https://github.com/ajv-validator/ajv/releases __Please note__: [Changes in version 7.0.0-beta](https://github.com/ajv-validator/ajv/releases/tag/v7.0.0-beta.0) [Version 6.0.0](https://github.com/ajv-validator/ajv/releases/tag/v6.0.0). ## Code of conduct Please review and follow the [Code of conduct](https://github.com/ajv-validator/ajv/blob/master/CODE_OF_CONDUCT.md). Please report any unacceptable behaviour to ajv.validator@gmail.com - it will be reviewed by the project team. ## Open-source software support Ajv is a part of [Tidelift subscription](https://tidelift.com/subscription/pkg/npm-ajv?utm_source=npm-ajv&utm_medium=referral&utm_campaign=readme) - it provides a centralised support to open-source software users, in addition to the support provided by software maintainers. ## License [MIT](https://github.com/ajv-validator/ajv/blob/master/LICENSE) Railroad-diagram Generator ========================== This is a small js library for generating railroad diagrams (like what [JSON.org](http://json.org) uses) using SVG. Railroad diagrams are a way of visually representing a grammar in a form that is more readable than using regular expressions or BNF. I think (though I haven't given it a lot of thought yet) that if it's easy to write a context-free grammar for the language, the corresponding railroad diagram will be easy as well. There are several railroad-diagram generators out there, but none of them had the visual appeal I wanted. [Here's an example of how they look!](http://www.xanthir.com/etc/railroad-diagrams/example.html) And [here's an online generator for you to play with and get SVG code from!](http://www.xanthir.com/etc/railroad-diagrams/generator.html) The library now exists in a Python port as well! See the information further down. Details ------- To use the library, just include the js and css files, and then call the Diagram() function. Its arguments are the components of the diagram (Diagram is a special form of Sequence). An alternative to Diagram() is ComplexDiagram() which is used to describe a complex type diagram. Components are either leaves or containers. The leaves: * Terminal(text) or a bare string - represents literal text * NonTerminal(text) - represents an instruction or another production * Comment(text) - a comment * Skip() - an empty line The containers: * Sequence(children) - like simple concatenation in a regex * Choice(index, children) - like | in a regex. The index argument specifies which child is the "normal" choice and should go in the middle * Optional(child, skip) - like ? in a regex. A shorthand for `Choice(1, [Skip(), child])`. If the optional `skip` parameter has the value `"skip"`, it instead puts the Skip() in the straight-line path, for when the "normal" behavior is to omit the item. * OneOrMore(child, repeat) - like + in a regex. The 'repeat' argument is optional, and specifies something that must go between the repetitions. * ZeroOrMore(child, repeat, skip) - like * in a regex. A shorthand for `Optional(OneOrMore(child, repeat))`. The optional `skip` parameter is identical to Optional(). For convenience, each component can be called with or without `new`. If called without `new`, the container components become n-ary; that is, you can say either `new Sequence([A, B])` or just `Sequence(A,B)`. After constructing a Diagram, call `.format(...padding)` on it, specifying 0-4 padding values (just like CSS) for some additional "breathing space" around the diagram (the paddings default to 20px). The result can either be `.toString()`'d for the markup, or `.toSVG()`'d for an `<svg>` element, which can then be immediately inserted to the document. As a convenience, Diagram also has an `.addTo(element)` method, which immediately converts it to SVG and appends it to the referenced element with default paddings. `element` defaults to `document.body`. Options ------- There are a few options you can tweak, at the bottom of the file. Just tweak either until the diagram looks like what you want. You can also change the CSS file - feel free to tweak to your heart's content. Note, though, that if you change the text sizes in the CSS, you'll have to go adjust the metrics for the leaf nodes as well. * VERTICAL_SEPARATION - sets the minimum amount of vertical separation between two items. Note that the stroke width isn't counted when computing the separation; this shouldn't be relevant unless you have a very small separation or very large stroke width. * ARC_RADIUS - the radius of the arcs used in the branching containers like Choice. This has a relatively large effect on the size of non-trivial diagrams. Both tight and loose values look good, depending on what you're going for. * DIAGRAM_CLASS - the class set on the root `<svg>` element of each diagram, for use in the CSS stylesheet. * STROKE_ODD_PIXEL_LENGTH - the default stylesheet uses odd pixel lengths for 'stroke'. Due to rasterization artifacts, they look best when the item has been translated half a pixel in both directions. If you change the styling to use a stroke with even pixel lengths, you'll want to set this variable to `false`. * INTERNAL_ALIGNMENT - when some branches of a container are narrower than others, this determines how they're aligned in the extra space. Defaults to "center", but can be set to "left" or "right". Caveats ------- At this early stage, the generator is feature-complete and works as intended, but still has several TODOs: * The font-sizes are hard-coded right now, and the font handling in general is very dumb - I'm just guessing at some metrics that are probably "good enough" rather than measuring things properly. Python Port ----------- In addition to the canonical JS version, the library now exists as a Python library as well. Using it is basically identical. The config variables are globals in the file, and so may be adjusted either manually or via tweaking from inside your program. The main difference from the JS port is how you extract the string from the Diagram. You'll find a `writeSvg(writerFunc)` method on `Diagram`, which takes a callback of one argument and passes it the string form of the diagram. For example, it can be used like `Diagram(...).writeSvg(sys.stdout.write)` to write to stdout. **Note**: the callback will be called multiple times as it builds up the string, not just once with the whole thing. If you need it all at once, consider something like a `StringIO` as an easy way to collect it into a single string. License ------- This document and all associated files in the github project are licensed under [CC0](http://creativecommons.org/publicdomain/zero/1.0/) . This means you can reuse, remix, or otherwise appropriate this project for your own use **without restriction**. (The actual legal meaning can be found at the above link.) Don't ask me for permission to use any part of this project, **just use it**. I would appreciate attribution, but that is not required by the license. Overview [](https://travis-ci.org/lydell/js-tokens) ======== A regex that tokenizes JavaScript. ```js var jsTokens = require("js-tokens").default var jsString = "var foo=opts.foo;\n..." jsString.match(jsTokens) // ["var", " ", "foo", "=", "opts", ".", "foo", ";", "\n", ...] ``` Installation ============ `npm install js-tokens` ```js import jsTokens from "js-tokens" // or: var jsTokens = require("js-tokens").default ``` Usage ===== ### `jsTokens` ### A regex with the `g` flag that matches JavaScript tokens. The regex _always_ matches, even invalid JavaScript and the empty string. The next match is always directly after the previous. ### `var token = matchToToken(match)` ### ```js import {matchToToken} from "js-tokens" // or: var matchToToken = require("js-tokens").matchToToken ``` Takes a `match` returned by `jsTokens.exec(string)`, and returns a `{type: String, value: String}` object. The following types are available: - string - comment - regex - number - name - punctuator - whitespace - invalid Multi-line comments and strings also have a `closed` property indicating if the token was closed or not (see below). Comments and strings both come in several flavors. To distinguish them, check if the token starts with `//`, `/*`, `'`, `"` or `` ` ``. Names are ECMAScript IdentifierNames, that is, including both identifiers and keywords. You may use [is-keyword-js] to tell them apart. Whitespace includes both line terminators and other whitespace. [is-keyword-js]: https://github.com/crissdev/is-keyword-js ECMAScript support ================== The intention is to always support the latest ECMAScript version whose feature set has been finalized. If adding support for a newer version requires changes, a new version with a major verion bump will be released. Currently, ECMAScript 2018 is supported. Invalid code handling ===================== Unterminated strings are still matched as strings. JavaScript strings cannot contain (unescaped) newlines, so unterminated strings simply end at the end of the line. Unterminated template strings can contain unescaped newlines, though, so they go on to the end of input. Unterminated multi-line comments are also still matched as comments. They simply go on to the end of the input. Unterminated regex literals are likely matched as division and whatever is inside the regex. Invalid ASCII characters have their own capturing group. Invalid non-ASCII characters are treated as names, to simplify the matching of names (except unicode spaces which are treated as whitespace). Note: See also the [ES2018](#es2018) section. Regex literals may contain invalid regex syntax. They are still matched as regex literals. They may also contain repeated regex flags, to keep the regex simple. Strings may contain invalid escape sequences. Limitations =========== Tokenizing JavaScript using regexes—in fact, _one single regex_—won’t be perfect. But that’s not the point either. You may compare jsTokens with [esprima] by using `esprima-compare.js`. See `npm run esprima-compare`! [esprima]: http://esprima.org/ ### Template string interpolation ### Template strings are matched as single tokens, from the starting `` ` `` to the ending `` ` ``, including interpolations (whose tokens are not matched individually). Matching template string interpolations requires recursive balancing of `{` and `}`—something that JavaScript regexes cannot do. Only one level of nesting is supported. ### Division and regex literals collision ### Consider this example: ```js var g = 9.82 var number = bar / 2/g var regex = / 2/g ``` A human can easily understand that in the `number` line we’re dealing with division, and in the `regex` line we’re dealing with a regex literal. How come? Because humans can look at the whole code to put the `/` characters in context. A JavaScript regex cannot. It only sees forwards. (Well, ES2018 regexes can also look backwards. See the [ES2018](#es2018) section). When the `jsTokens` regex scans throught the above, it will see the following at the end of both the `number` and `regex` rows: ```js / 2/g ``` It is then impossible to know if that is a regex literal, or part of an expression dealing with division. Here is a similar case: ```js foo /= 2/g foo(/= 2/g) ``` The first line divides the `foo` variable with `2/g`. The second line calls the `foo` function with the regex literal `/= 2/g`. Again, since `jsTokens` only sees forwards, it cannot tell the two cases apart. There are some cases where we _can_ tell division and regex literals apart, though. First off, we have the simple cases where there’s only one slash in the line: ```js var foo = 2/g foo /= 2 ``` Regex literals cannot contain newlines, so the above cases are correctly identified as division. Things are only problematic when there are more than one non-comment slash in a single line. Secondly, not every character is a valid regex flag. ```js var number = bar / 2/e ``` The above example is also correctly identified as division, because `e` is not a valid regex flag. I initially wanted to future-proof by allowing `[a-zA-Z]*` (any letter) as flags, but it is not worth it since it increases the amount of ambigous cases. So only the standard `g`, `m`, `i`, `y` and `u` flags are allowed. This means that the above example will be identified as division as long as you don’t rename the `e` variable to some permutation of `gmiyus` 1 to 6 characters long. Lastly, we can look _forward_ for information. - If the token following what looks like a regex literal is not valid after a regex literal, but is valid in a division expression, then the regex literal is treated as division instead. For example, a flagless regex cannot be followed by a string, number or name, but all of those three can be the denominator of a division. - Generally, if what looks like a regex literal is followed by an operator, the regex literal is treated as division instead. This is because regexes are seldomly used with operators (such as `+`, `*`, `&&` and `==`), but division could likely be part of such an expression. Please consult the regex source and the test cases for precise information on when regex or division is matched (should you need to know). In short, you could sum it up as: If the end of a statement looks like a regex literal (even if it isn’t), it will be treated as one. Otherwise it should work as expected (if you write sane code). ### ES2018 ### ES2018 added some nice regex improvements to the language. - [Unicode property escapes] should allow telling names and invalid non-ASCII characters apart without blowing up the regex size. - [Lookbehind assertions] should allow matching telling division and regex literals apart in more cases. - [Named capture groups] might simplify some things. These things would be nice to do, but are not critical. They probably have to wait until the oldest maintained Node.js LTS release supports those features. [Unicode property escapes]: http://2ality.com/2017/07/regexp-unicode-property-escapes.html [Lookbehind assertions]: http://2ality.com/2017/05/regexp-lookbehind-assertions.html [Named capture groups]: http://2ality.com/2017/05/regexp-named-capture-groups.html License ======= [MIT](LICENSE). ### Estraverse [](http://travis-ci.org/estools/estraverse) Estraverse ([estraverse](http://github.com/estools/estraverse)) is [ECMAScript](http://www.ecma-international.org/publications/standards/Ecma-262.htm) traversal functions from [esmangle project](http://github.com/estools/esmangle). ### Documentation You can find usage docs at [wiki page](https://github.com/estools/estraverse/wiki/Usage). ### Example Usage The following code will output all variables declared at the root of a file. ```javascript estraverse.traverse(ast, { enter: function (node, parent) { if (node.type == 'FunctionExpression' || node.type == 'FunctionDeclaration') return estraverse.VisitorOption.Skip; }, leave: function (node, parent) { if (node.type == 'VariableDeclarator') console.log(node.id.name); } }); ``` We can use `this.skip`, `this.remove` and `this.break` functions instead of using Skip, Remove and Break. ```javascript estraverse.traverse(ast, { enter: function (node) { this.break(); } }); ``` And estraverse provides `estraverse.replace` function. When returning node from `enter`/`leave`, current node is replaced with it. ```javascript result = estraverse.replace(tree, { enter: function (node) { // Replace it with replaced. if (node.type === 'Literal') return replaced; } }); ``` By passing `visitor.keys` mapping, we can extend estraverse traversing functionality. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Extending the existing traversing rules. keys: { // TargetNodeName: [ 'keys', 'containing', 'the', 'other', '**node**' ] TestExpression: ['argument'] } }); ``` By passing `visitor.fallback` option, we can control the behavior when encountering unknown nodes. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Iterating the child **nodes** of unknown nodes. fallback: 'iteration' }); ``` When `visitor.fallback` is a function, we can determine which keys to visit on each node. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Skip the `argument` property of each node fallback: function(node) { return Object.keys(node).filter(function(key) { return key !== 'argument'; }); } }); ``` ### License Copyright (C) 2012-2016 [Yusuke Suzuki](http://github.com/Constellation) (twitter: [@Constellation](http://twitter.com/Constellation)) and other contributors. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # flatted [](https://www.npmjs.com/package/flatted) [](https://coveralls.io/github/WebReflection/flatted?branch=main) [](https://travis-ci.com/WebReflection/flatted) [](https://opensource.org/licenses/ISC)   <sup>**Social Media Photo by [Matt Seymour](https://unsplash.com/@mattseymour) on [Unsplash](https://unsplash.com/)**</sup> ## Announcement 📣 There is a standard approach to recursion and more data-types than what JSON allows, and it's part of the [Structured Clone polyfill](https://github.com/ungap/structured-clone/#readme). Beside acting as a polyfill, its `@ungap/structured-clone/json` export provides both `stringify` and `parse`, and it's been tested for being faster than *flatted*, but its produced output is also smaller than *flatted* in general. The *@ungap/structured-clone* module is, in short, a drop in replacement for *flatted*, but it's not compatible with *flatted* specialized syntax. However, if recursion, as well as more data-types, are what you are after, or interesting for your projects/use cases, consider switching to this new module whenever you can 👍 - - - A super light (0.5K) and fast circular JSON parser, directly from the creator of [CircularJSON](https://github.com/WebReflection/circular-json/#circularjson). Now available also for **[PHP](./php/flatted.php)**. ```js npm i flatted ``` Usable via [CDN](https://unpkg.com/flatted) or as regular module. ```js // ESM import {parse, stringify, toJSON, fromJSON} from 'flatted'; // CJS const {parse, stringify, toJSON, fromJSON} = require('flatted'); const a = [{}]; a[0].a = a; a.push(a); stringify(a); // [["1","0"],{"a":"0"}] ``` ## toJSON and fromJSON If you'd like to implicitly survive JSON serialization, these two helpers helps: ```js import {toJSON, fromJSON} from 'flatted'; class RecursiveMap extends Map { static fromJSON(any) { return new this(fromJSON(any)); } toJSON() { return toJSON([...this.entries()]); } } const recursive = new RecursiveMap; const same = {}; same.same = same; recursive.set('same', same); const asString = JSON.stringify(recursive); const asMap = RecursiveMap.fromJSON(JSON.parse(asString)); asMap.get('same') === asMap.get('same').same; // true ``` ## Flatted VS JSON As it is for every other specialized format capable of serializing and deserializing circular data, you should never `JSON.parse(Flatted.stringify(data))`, and you should never `Flatted.parse(JSON.stringify(data))`. The only way this could work is to `Flatted.parse(Flatted.stringify(data))`, as it is also for _CircularJSON_ or any other, otherwise there's no granted data integrity. Also please note this project serializes and deserializes only data compatible with JSON, so that sockets, or anything else with internal classes different from those allowed by JSON standard, won't be serialized and unserialized as expected. ### New in V1: Exact same JSON API * Added a [reviver](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/parse#Syntax) parameter to `.parse(string, reviver)` and revive your own objects. * Added a [replacer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify#Syntax) and a `space` parameter to `.stringify(object, replacer, space)` for feature parity with JSON signature. ### Compatibility All ECMAScript engines compatible with `Map`, `Set`, `Object.keys`, and `Array.prototype.reduce` will work, even if polyfilled. ### How does it work ? While stringifying, all Objects, including Arrays, and strings, are flattened out and replaced as unique index. `*` Once parsed, all indexes will be replaced through the flattened collection. <sup><sub>`*` represented as string to avoid conflicts with numbers</sub></sup> ```js // logic example var a = [{one: 1}, {two: '2'}]; a[0].a = a; // a is the main object, will be at index '0' // {one: 1} is the second object, index '1' // {two: '2'} the third, in '2', and it has a string // which will be found at index '3' Flatted.stringify(a); // [["1","2"],{"one":1,"a":"0"},{"two":"3"},"2"] // a[one,two] {one: 1, a} {two: '2'} '2' ``` African Leadership University Undergraduate Thesis Project ================== ### A blockchain-enabled framework for enhancing the traceability of biodiversity-based supply chains in Africa. Link to [paper] Link to low/mediumish fidelity [prototype] The study investigates and proposes a blockchain-based system for enhancing traceability in multi-tier biodiversity-based supply chains. It conceptualizes the interaction of supply chain partners, and related network architecture at the organizational level, smart contract and transaction validation rule at the operational level. The study propose building the system on the Near Protocol, a carbon neutral blockchain and [IPFS] content addressing to store certifications, tenders, media, etc off-chain putting immutable, permanent links in transactions — timestamping and securing content without having to put the data on-chain. The case example maps the formal supply chain for organic honey in Rwanda. Quick Start =========== To run this project locally: 1. Prerequisites: Make sure you've installed [Node.js] ≥ 12 2. Install dependencies: `yarn install` 3. Run the local development server: `yarn dev` (see `package.json` for a full list of `scripts` you can run with `yarn`) The Code ================== 1. The "backend" code lives in the `/contract` folder. See the README there for more info. 2. The frontend code lives in the `/src` folder. 3. Tests: there are different kinds of tests for the frontend and the smart contract. See `contract/README` for info about how it's tested. The frontend code gets tested with [jest]. You can run both of these at once with `yarn run test`. [paper]: https://docs.google.com/document/d/1ydkruxQHBMlz2ABHlSRWF2m9nqz2lK7YBvkfmxE0hZQ/edit?usp=sharing [prototype]: https://www.figma.com/file/qABFBFAA7XdnoFh8XZmscI/thesis?node-id=0%3A1 [IPFS]: https://ipfs.io/ [React]: https://reactjs.org/ [create-near-app]: https://github.com/near/create-near-app [Node.js]: https://nodejs.org/en/download/package-manager/ [jest]: https://jestjs.io/ [NEAR accounts]: https://docs.near.org/docs/concepts/account [NEAR Wallet]: https://wallet.testnet.near.org/ [near-cli]: https://github.com/near/near-cli [gh-pages]: https://github.com/tschaub/gh-pages # randexp.js randexp will generate a random string that matches a given RegExp Javascript object. [](http://travis-ci.org/fent/randexp.js) [](https://david-dm.org/fent/randexp.js) [](https://codecov.io/gh/fent/randexp.js) # Usage ```js var RandExp = require('randexp'); // supports grouping and piping new RandExp(/hello+ (world|to you)/).gen(); // => hellooooooooooooooooooo world // sets and ranges and references new RandExp(/<([a-z]\w{0,20})>foo<\1>/).gen(); // => <m5xhdg>foo<m5xhdg> // wildcard new RandExp(/random stuff: .+/).gen(); // => random stuff: l3m;Hf9XYbI [YPaxV>U*4-_F!WXQh9>;rH3i l!8.zoh?[utt1OWFQrE ^~8zEQm]~tK // ignore case new RandExp(/xxx xtreme dragon warrior xxx/i).gen(); // => xxx xtReME dRAGON warRiOR xXX // dynamic regexp shortcut new RandExp('(sun|mon|tue|wednes|thurs|fri|satur)day', 'i'); // is the same as new RandExp(new RegExp('(sun|mon|tue|wednes|thurs|fri|satur)day', 'i')); ``` If you're only going to use `gen()` once with a regexp and want slightly shorter syntax for it ```js var randexp = require('randexp').randexp; randexp(/[1-6]/); // 4 randexp('great|good( job)?|excellent'); // great ``` If you miss the old syntax ```js require('randexp').sugar(); /yes|no|maybe|i don't know/.gen(); // maybe ``` # Motivation Regular expressions are used in every language, every programmer is familiar with them. Regex can be used to easily express complex strings. What better way to generate a random string than with a language you can use to express the string you want? Thanks to [String-Random](http://search.cpan.org/~steve/String-Random-0.22/lib/String/Random.pm) for giving me the idea to make this in the first place and [randexp](https://github.com/benburkert/randexp) for the sweet `.gen()` syntax. # Default Range The default generated character range includes printable ASCII. In order to add or remove characters, a `defaultRange` attribute is exposed. you can `subtract(from, to)` and `add(from, to)` ```js var randexp = new RandExp(/random stuff: .+/); randexp.defaultRange.subtract(32, 126); randexp.defaultRange.add(0, 65535); randexp.gen(); // => random stuff: 湐箻ໜ䫴␩⶛㳸長���邓蕲뤀쑡篷皇硬剈궦佔칗븛뀃匫鴔事좍ﯣ⭼ꝏ䭍詳蒂䥂뽭 ``` # Custom PRNG The default randomness is provided by `Math.random()`. If you need to use a seedable or cryptographic PRNG, you can override `RandExp.prototype.randInt` or `randexp.randInt` (where `randexp` is an instance of `RandExp`). `randInt(from, to)` accepts an inclusive range and returns a randomly selected number within that range. # Infinite Repetitionals Repetitional tokens such as `*`, `+`, and `{3,}` have an infinite max range. In this case, randexp looks at its min and adds 100 to it to get a useable max value. If you want to use another int other than 100 you can change the `max` property in `RandExp.prototype` or the RandExp instance. ```js var randexp = new RandExp(/no{1,}/); randexp.max = 1000000; ``` With `RandExp.sugar()` ```js var regexp = /(hi)*/; regexp.max = 1000000; ``` # Bad Regular Expressions There are some regular expressions which can never match any string. * Ones with badly placed positionals such as `/a^/` and `/$c/m`. Randexp will ignore positional tokens. * Back references to non-existing groups like `/(a)\1\2/`. Randexp will ignore those references, returning an empty string for them. If the group exists only after the reference is used such as in `/\1 (hey)/`, it will too be ignored. * Custom negated character sets with two sets inside that cancel each other out. Example: `/[^\w\W]/`. If you give this to randexp, it will return an empty string for this set since it can't match anything. # Projects based on randexp.js ## JSON-Schema Faker Use generators to populate JSON Schema samples. See: [jsf on github](https://github.com/json-schema-faker/json-schema-faker/) and [jsf demo page](http://json-schema-faker.js.org/). # Install ### Node.js npm install randexp ### Browser Download the [minified version](https://github.com/fent/randexp.js/releases) from the latest release. # Tests Tests are written with [mocha](https://mochajs.org) ```bash npm test ``` # License MIT # file-entry-cache > Super simple cache for file metadata, useful for process that work o a given series of files > and that only need to repeat the job on the changed ones since the previous run of the process — Edit [](https://npmjs.org/package/file-entry-cache) [](https://travis-ci.org/royriojas/file-entry-cache) ## install ```bash npm i --save file-entry-cache ``` ## Usage The module exposes two functions `create` and `createFromFile`. ## `create(cacheName, [directory, useCheckSum])` - **cacheName**: the name of the cache to be created - **directory**: Optional the directory to load the cache from - **usecheckSum**: Whether to use md5 checksum to verify if file changed. If false the default will be to use the mtime and size of the file. ## `createFromFile(pathToCache, [useCheckSum])` - **pathToCache**: the path to the cache file (this combines the cache name and directory) - **useCheckSum**: Whether to use md5 checksum to verify if file changed. If false the default will be to use the mtime and size of the file. ```js // loads the cache, if one does not exists for the given // Id a new one will be prepared to be created var fileEntryCache = require('file-entry-cache'); var cache = fileEntryCache.create('testCache'); var files = expand('../fixtures/*.txt'); // the first time this method is called, will return all the files var oFiles = cache.getUpdatedFiles(files); // this will persist this to disk checking each file stats and // updating the meta attributes `size` and `mtime`. // custom fields could also be added to the meta object and will be persisted // in order to retrieve them later cache.reconcile(); // use this if you want the non visited file entries to be kept in the cache // for more than one execution // // cache.reconcile( true /* noPrune */) // on a second run var cache2 = fileEntryCache.create('testCache'); // will return now only the files that were modified or none // if no files were modified previous to the execution of this function var oFiles = cache.getUpdatedFiles(files); // if you want to prevent a file from being considered non modified // something useful if a file failed some sort of validation // you can then remove the entry from the cache doing cache.removeEntry('path/to/file'); // path to file should be the same path of the file received on `getUpdatedFiles` // that will effectively make the file to appear again as modified until the validation is passed. In that // case you should not remove it from the cache // if you need all the files, so you can determine what to do with the changed ones // you can call var oFiles = cache.normalizeEntries(files); // oFiles will be an array of objects like the following entry = { key: 'some/name/file', the path to the file changed: true, // if the file was changed since previous run meta: { size: 3242, // the size of the file mtime: 231231231, // the modification time of the file data: {} // some extra field stored for this file (useful to save the result of a transformation on the file } } ``` ## Motivation for this module I needed a super simple and dumb **in-memory cache** with optional disk persistence (write-back cache) in order to make a script that will beautify files with `esformatter` to execute only on the files that were changed since the last run. In doing so the process of beautifying files was reduced from several seconds to a small fraction of a second. This module uses [flat-cache](https://www.npmjs.com/package/flat-cache) a super simple `key/value` cache storage with optional file persistance. The main idea is to read the files when the task begins, apply the transforms required, and if the process succeed, then store the new state of the files. The next time this module request for `getChangedFiles` will return only the files that were modified. Making the process to end faster. This module could also be used by processes that modify the files applying a transform, in that case the result of the transform could be stored in the `meta` field, of the entries. Anything added to the meta field will be persisted. Those processes won't need to call `getChangedFiles` they will instead call `normalizeEntries` that will return the entries with a `changed` field that can be used to determine if the file was changed or not. If it was not changed the transformed stored data could be used instead of actually applying the transformation, saving time in case of only a few files changed. In the worst case scenario all the files will be processed. In the best case scenario only a few of them will be processed. ## Important notes - The values set on the meta attribute of the entries should be `stringify-able` ones if possible, flat-cache uses `circular-json` to try to persist circular structures, but this should be considered experimental. The best results are always obtained with non circular values - All the changes to the cache state are done to memory first and only persisted after reconcile. ## License MIT # inflight Add callbacks to requests in flight to avoid async duplication ## USAGE ```javascript var inflight = require('inflight') // some request that does some stuff function req(key, callback) { // key is any random string. like a url or filename or whatever. // // will return either a falsey value, indicating that the // request for this key is already in flight, or a new callback // which when called will call all callbacks passed to inflightk // with the same key callback = inflight(key, callback) // If we got a falsey value back, then there's already a req going if (!callback) return // this is where you'd fetch the url or whatever // callback is also once()-ified, so it can safely be assigned // to multiple events etc. First call wins. setTimeout(function() { callback(null, key) }, 100) } // only assigns a single setTimeout // when it dings, all cbs get called req('foo', cb1) req('foo', cb2) req('foo', cb3) req('foo', cb4) ``` # which Like the unix `which` utility. Finds the first instance of a specified executable in the PATH environment variable. Does not cache the results, so `hash -r` is not needed when the PATH changes. ## USAGE ```javascript var which = require('which') // async usage which('node', function (er, resolvedPath) { // er is returned if no "node" is found on the PATH // if it is found, then the absolute path to the exec is returned }) // or promise which('node').then(resolvedPath => { ... }).catch(er => { ... not found ... }) // sync usage // throws if not found var resolved = which.sync('node') // if nothrow option is used, returns null if not found resolved = which.sync('node', {nothrow: true}) // Pass options to override the PATH and PATHEXT environment vars. which('node', { path: someOtherPath }, function (er, resolved) { if (er) throw er console.log('found at %j', resolved) }) ``` ## CLI USAGE Same as the BSD `which(1)` binary. ``` usage: which [-as] program ... ``` ## OPTIONS You may pass an options object as the second argument. - `path`: Use instead of the `PATH` environment variable. - `pathExt`: Use instead of the `PATHEXT` environment variable. - `all`: Return all matches, instead of just the first one. Note that this means the function returns an array of strings instead of a single string. [](https://travis-ci.org/#!/adaltas/node-csv-stringify) [](https://www.npmjs.com/package/csv-stringify) [](https://www.npmjs.com/package/csv-stringify) This package is a stringifier converting records into a CSV text and implementing the Node.js [`stream.Transform` API](https://nodejs.org/api/stream.html). It also provides the easier synchronous and callback-based APIs for conveniency. It is both extremely easy to use and powerful. It was first released in 2010 and is tested against big data sets by a large community. ## Documentation * [Project homepage](http://csv.js.org/stringify/) * [API](http://csv.js.org/stringify/api/) * [Options](http://csv.js.org/stringify/options/) * [Examples](http://csv.js.org/stringify/examples/) ## Main features * Follow the Node.js streaming API * Simplicity with the optional callback API * Support for custom formatters, delimiters, quotes, escape characters and header * Support big datasets * Complete test coverage and samples for inspiration * Only 1 external dependency * to be used conjointly with `csv-generate`, `csv-parse` and `stream-transform` * MIT License ## Usage The module is built on the Node.js Stream API. For the sake of simplicity, a simple callback API is also provided. To give you a quick look, here's an example of the callback API: ```javascript const stringify = require('csv-stringify') const assert = require('assert') // import stringify from 'csv-stringify' // import assert from 'assert/strict' const input = [ [ '1', '2', '3', '4' ], [ 'a', 'b', 'c', 'd' ] ] stringify(input, function(err, output) { const expected = '1,2,3,4\na,b,c,d\n' assert.strictEqual(output, expected, `output.should.eql ${expected}`) console.log("Passed.", output) }) ``` ## Development Tests are executed with mocha. To install it, run `npm install` followed by `npm test`. It will install mocha and its dependencies in your project "node_modules" directory and run the test suite. The tests run against the CoffeeScript source files. To generate the JavaScript files, run `npm run build`. The test suite is run online with [Travis](https://travis-ci.org/#!/adaltas/node-csv-stringify). See the [Travis definition file](https://github.com/adaltas/node-csv-stringify/blob/master/.travis.yml) to view the tested Node.js version. ## Contributors * David Worms: <https://github.com/wdavidw> [csv_home]: https://github.com/adaltas/node-csv [stream_transform]: http://nodejs.org/api/stream.html#stream_class_stream_transform [examples]: http://csv.js.org/stringify/examples/ [csv]: https://github.com/adaltas/node-csv # has > Object.prototype.hasOwnProperty.call shortcut ## Installation ```sh npm install --save has ``` ## Usage ```js var has = require('has'); has({}, 'hasOwnProperty'); // false has(Object.prototype, 'hasOwnProperty'); // true ``` <p align="center"> <img width="250" src="https://raw.githubusercontent.com/yargs/yargs/master/yargs-logo.png"> </p> <h1 align="center"> Yargs </h1> <p align="center"> <b >Yargs be a node.js library fer hearties tryin' ter parse optstrings</b> </p> <br>  [![NPM version][npm-image]][npm-url] [![js-standard-style][standard-image]][standard-url] [![Coverage][coverage-image]][coverage-url] [![Conventional Commits][conventional-commits-image]][conventional-commits-url] [![Slack][slack-image]][slack-url] ## Description Yargs helps you build interactive command line tools, by parsing arguments and generating an elegant user interface. It gives you: * commands and (grouped) options (`my-program.js serve --port=5000`). * a dynamically generated help menu based on your arguments: ``` mocha [spec..] Run tests with Mocha Commands mocha inspect [spec..] Run tests with Mocha [default] mocha init <path> create a client-side Mocha setup at <path> Rules & Behavior --allow-uncaught Allow uncaught errors to propagate [boolean] --async-only, -A Require all tests to use a callback (async) or return a Promise [boolean] ``` * bash-completion shortcuts for commands and options. * and [tons more](/docs/api.md). ## Installation Stable version: ```bash npm i yargs ``` Bleeding edge version with the most recent features: ```bash npm i yargs@next ``` ## Usage ### Simple Example ```javascript #!/usr/bin/env node const yargs = require('yargs/yargs') const { hideBin } = require('yargs/helpers') const argv = yargs(hideBin(process.argv)).argv if (argv.ships > 3 && argv.distance < 53.5) { console.log('Plunder more riffiwobbles!') } else { console.log('Retreat from the xupptumblers!') } ``` ```bash $ ./plunder.js --ships=4 --distance=22 Plunder more riffiwobbles! $ ./plunder.js --ships 12 --distance 98.7 Retreat from the xupptumblers! ``` ### Complex Example ```javascript #!/usr/bin/env node const yargs = require('yargs/yargs') const { hideBin } = require('yargs/helpers') yargs(hideBin(process.argv)) .command('serve [port]', 'start the server', (yargs) => { yargs .positional('port', { describe: 'port to bind on', default: 5000 }) }, (argv) => { if (argv.verbose) console.info(`start server on :${argv.port}`) serve(argv.port) }) .option('verbose', { alias: 'v', type: 'boolean', description: 'Run with verbose logging' }) .argv ``` Run the example above with `--help` to see the help for the application. ## Supported Platforms ### TypeScript yargs has type definitions at [@types/yargs][type-definitions]. ``` npm i @types/yargs --save-dev ``` See usage examples in [docs](/docs/typescript.md). ### Deno As of `v16`, `yargs` supports [Deno](https://github.com/denoland/deno): ```typescript import yargs from 'https://deno.land/x/yargs/deno.ts' import { Arguments } from 'https://deno.land/x/yargs/deno-types.ts' yargs(Deno.args) .command('download <files...>', 'download a list of files', (yargs: any) => { return yargs.positional('files', { describe: 'a list of files to do something with' }) }, (argv: Arguments) => { console.info(argv) }) .strictCommands() .demandCommand(1) .argv ``` ### ESM As of `v16`,`yargs` supports ESM imports: ```js import yargs from 'yargs' import { hideBin } from 'yargs/helpers' yargs(hideBin(process.argv)) .command('curl <url>', 'fetch the contents of the URL', () => {}, (argv) => { console.info(argv) }) .demandCommand(1) .argv ``` ### Usage in Browser See examples of using yargs in the browser in [docs](/docs/browser.md). ## Community Having problems? want to contribute? join our [community slack](http://devtoolscommunity.herokuapp.com). ## Documentation ### Table of Contents * [Yargs' API](/docs/api.md) * [Examples](/docs/examples.md) * [Parsing Tricks](/docs/tricks.md) * [Stop the Parser](/docs/tricks.md#stop) * [Negating Boolean Arguments](/docs/tricks.md#negate) * [Numbers](/docs/tricks.md#numbers) * [Arrays](/docs/tricks.md#arrays) * [Objects](/docs/tricks.md#objects) * [Quotes](/docs/tricks.md#quotes) * [Advanced Topics](/docs/advanced.md) * [Composing Your App Using Commands](/docs/advanced.md#commands) * [Building Configurable CLI Apps](/docs/advanced.md#configuration) * [Customizing Yargs' Parser](/docs/advanced.md#customizing) * [Bundling yargs](/docs/bundling.md) * [Contributing](/contributing.md) ## Supported Node.js Versions Libraries in this ecosystem make a best effort to track [Node.js' release schedule](https://nodejs.org/en/about/releases/). Here's [a post on why we think this is important](https://medium.com/the-node-js-collection/maintainers-should-consider-following-node-js-release-schedule-ab08ed4de71a). [npm-url]: https://www.npmjs.com/package/yargs [npm-image]: https://img.shields.io/npm/v/yargs.svg [standard-image]: https://img.shields.io/badge/code%20style-standard-brightgreen.svg [standard-url]: http://standardjs.com/ [conventional-commits-image]: https://img.shields.io/badge/Conventional%20Commits-1.0.0-yellow.svg [conventional-commits-url]: https://conventionalcommits.org/ [slack-image]: http://devtoolscommunity.herokuapp.com/badge.svg [slack-url]: http://devtoolscommunity.herokuapp.com [type-definitions]: https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/yargs [coverage-image]: https://img.shields.io/nycrc/yargs/yargs [coverage-url]: https://github.com/yargs/yargs/blob/master/.nycrc # fs.realpath A backwards-compatible fs.realpath for Node v6 and above In Node v6, the JavaScript implementation of fs.realpath was replaced with a faster (but less resilient) native implementation. That raises new and platform-specific errors and cannot handle long or excessively symlink-looping paths. This module handles those cases by detecting the new errors and falling back to the JavaScript implementation. On versions of Node prior to v6, it has no effect. ## USAGE ```js var rp = require('fs.realpath') // async version rp.realpath(someLongAndLoopingPath, function (er, real) { // the ELOOP was handled, but it was a bit slower }) // sync version var real = rp.realpathSync(someLongAndLoopingPath) // monkeypatch at your own risk! // This replaces the fs.realpath/fs.realpathSync builtins rp.monkeypatch() // un-do the monkeypatching rp.unmonkeypatch() ``` # Regular Expression Tokenizer Tokenizes strings that represent a regular expressions. [](http://travis-ci.org/fent/ret.js) [](https://david-dm.org/fent/ret.js) [](https://codecov.io/gh/fent/ret.js) # Usage ```js var ret = require('ret'); var tokens = ret(/foo|bar/.source); ``` `tokens` will contain the following object ```js { "type": ret.types.ROOT "options": [ [ { "type": ret.types.CHAR, "value", 102 }, { "type": ret.types.CHAR, "value", 111 }, { "type": ret.types.CHAR, "value", 111 } ], [ { "type": ret.types.CHAR, "value", 98 }, { "type": ret.types.CHAR, "value", 97 }, { "type": ret.types.CHAR, "value", 114 } ] ] } ``` # Token Types `ret.types` is a collection of the various token types exported by ret. ### ROOT Only used in the root of the regexp. This is needed due to the posibility of the root containing a pipe `|` character. In that case, the token will have an `options` key that will be an array of arrays of tokens. If not, it will contain a `stack` key that is an array of tokens. ```js { "type": ret.types.ROOT, "stack": [token1, token2...], } ``` ```js { "type": ret.types.ROOT, "options" [ [token1, token2...], [othertoken1, othertoken2...] ... ], } ``` ### GROUP Groups contain tokens that are inside of a parenthesis. If the group begins with `?` followed by another character, it's a special type of group. A ':' tells the group not to be remembered when `exec` is used. '=' means the previous token matches only if followed by this group, and '!' means the previous token matches only if NOT followed. Like root, it can contain an `options` key instead of `stack` if there is a pipe. ```js { "type": ret.types.GROUP, "remember" true, "followedBy": false, "notFollowedBy": false, "stack": [token1, token2...], } ``` ```js { "type": ret.types.GROUP, "remember" true, "followedBy": false, "notFollowedBy": false, "options" [ [token1, token2...], [othertoken1, othertoken2...] ... ], } ``` ### POSITION `\b`, `\B`, `^`, and `$` specify positions in the regexp. ```js { "type": ret.types.POSITION, "value": "^", } ``` ### SET Contains a key `set` specifying what tokens are allowed and a key `not` specifying if the set should be negated. A set can contain other sets, ranges, and characters. ```js { "type": ret.types.SET, "set": [token1, token2...], "not": false, } ``` ### RANGE Used in set tokens to specify a character range. `from` and `to` are character codes. ```js { "type": ret.types.RANGE, "from": 97, "to": 122, } ``` ### REPETITION ```js { "type": ret.types.REPETITION, "min": 0, "max": Infinity, "value": token, } ``` ### REFERENCE References a group token. `value` is 1-9. ```js { "type": ret.types.REFERENCE, "value": 1, } ``` ### CHAR Represents a single character token. `value` is the character code. This might seem a bit cluttering instead of concatenating characters together. But since repetition tokens only repeat the last token and not the last clause like the pipe, it's simpler to do it this way. ```js { "type": ret.types.CHAR, "value": 123, } ``` ## Errors ret.js will throw errors if given a string with an invalid regular expression. All possible errors are * Invalid group. When a group with an immediate `?` character is followed by an invalid character. It can only be followed by `!`, `=`, or `:`. Example: `/(?_abc)/` * Nothing to repeat. Thrown when a repetitional token is used as the first token in the current clause, as in right in the beginning of the regexp or group, or right after a pipe. Example: `/foo|?bar/`, `/{1,3}foo|bar/`, `/foo(+bar)/` * Unmatched ). A group was not opened, but was closed. Example: `/hello)2u/` * Unterminated group. A group was not closed. Example: `/(1(23)4/` * Unterminated character class. A custom character set was not closed. Example: `/[abc/` # Install npm install ret # Tests Tests are written with [vows](http://vowsjs.org/) ```bash npm test ``` # License MIT # Punycode.js [](https://travis-ci.org/bestiejs/punycode.js) [](https://codecov.io/gh/bestiejs/punycode.js) [](https://gemnasium.com/bestiejs/punycode.js) Punycode.js is a robust Punycode converter that fully complies to [RFC 3492](https://tools.ietf.org/html/rfc3492) and [RFC 5891](https://tools.ietf.org/html/rfc5891). This JavaScript library is the result of comparing, optimizing and documenting different open-source implementations of the Punycode algorithm: * [The C example code from RFC 3492](https://tools.ietf.org/html/rfc3492#appendix-C) * [`punycode.c` by _Markus W. Scherer_ (IBM)](http://opensource.apple.com/source/ICU/ICU-400.42/icuSources/common/punycode.c) * [`punycode.c` by _Ben Noordhuis_](https://github.com/bnoordhuis/punycode/blob/master/punycode.c) * [JavaScript implementation by _some_](http://stackoverflow.com/questions/183485/can-anyone-recommend-a-good-free-javascript-for-punycode-to-unicode-conversion/301287#301287) * [`punycode.js` by _Ben Noordhuis_](https://github.com/joyent/node/blob/426298c8c1c0d5b5224ac3658c41e7c2a3fe9377/lib/punycode.js) (note: [not fully compliant](https://github.com/joyent/node/issues/2072)) This project was [bundled](https://github.com/joyent/node/blob/master/lib/punycode.js) with Node.js from [v0.6.2+](https://github.com/joyent/node/compare/975f1930b1...61e796decc) until [v7](https://github.com/nodejs/node/pull/7941) (soft-deprecated). The current version supports recent versions of Node.js only. It provides a CommonJS module and an ES6 module. For the old version that offers the same functionality with broader support, including Rhino, Ringo, Narwhal, and web browsers, see [v1.4.1](https://github.com/bestiejs/punycode.js/releases/tag/v1.4.1). ## Installation Via [npm](https://www.npmjs.com/): ```bash npm install punycode --save ``` In [Node.js](https://nodejs.org/): ```js const punycode = require('punycode'); ``` ## API ### `punycode.decode(string)` Converts a Punycode string of ASCII symbols to a string of Unicode symbols. ```js // decode domain name parts punycode.decode('maana-pta'); // 'mañana' punycode.decode('--dqo34k'); // '☃-⌘' ``` ### `punycode.encode(string)` Converts a string of Unicode symbols to a Punycode string of ASCII symbols. ```js // encode domain name parts punycode.encode('mañana'); // 'maana-pta' punycode.encode('☃-⌘'); // '--dqo34k' ``` ### `punycode.toUnicode(input)` Converts a Punycode string representing a domain name or an email address to Unicode. Only the Punycoded parts of the input will be converted, i.e. it doesn’t matter if you call it on a string that has already been converted to Unicode. ```js // decode domain names punycode.toUnicode('xn--maana-pta.com'); // → 'mañana.com' punycode.toUnicode('xn----dqo34k.com'); // → '☃-⌘.com' // decode email addresses punycode.toUnicode('джумла@xn--p-8sbkgc5ag7bhce.xn--ba-lmcq'); // → 'джумла@джpумлатест.bрфa' ``` ### `punycode.toASCII(input)` Converts a lowercased Unicode string representing a domain name or an email address to Punycode. Only the non-ASCII parts of the input will be converted, i.e. it doesn’t matter if you call it with a domain that’s already in ASCII. ```js // encode domain names punycode.toASCII('mañana.com'); // → 'xn--maana-pta.com' punycode.toASCII('☃-⌘.com'); // → 'xn----dqo34k.com' // encode email addresses punycode.toASCII('джумла@джpумлатест.bрфa'); // → 'джумла@xn--p-8sbkgc5ag7bhce.xn--ba-lmcq' ``` ### `punycode.ucs2` #### `punycode.ucs2.decode(string)` Creates an array containing the numeric code point values of each Unicode symbol in the string. While [JavaScript uses UCS-2 internally](https://mathiasbynens.be/notes/javascript-encoding), this function will convert a pair of surrogate halves (each of which UCS-2 exposes as separate characters) into a single code point, matching UTF-16. ```js punycode.ucs2.decode('abc'); // → [0x61, 0x62, 0x63] // surrogate pair for U+1D306 TETRAGRAM FOR CENTRE: punycode.ucs2.decode('\uD834\uDF06'); // → [0x1D306] ``` #### `punycode.ucs2.encode(codePoints)` Creates a string based on an array of numeric code point values. ```js punycode.ucs2.encode([0x61, 0x62, 0x63]); // → 'abc' punycode.ucs2.encode([0x1D306]); // → '\uD834\uDF06' ``` ### `punycode.version` A string representing the current Punycode.js version number. ## Author | [](https://twitter.com/mathias "Follow @mathias on Twitter") | |---| | [Mathias Bynens](https://mathiasbynens.be/) | ## License Punycode.js is available under the [MIT](https://mths.be/mit) license. # color-convert [](https://travis-ci.org/Qix-/color-convert) Color-convert is a color conversion library for JavaScript and node. It converts all ways between `rgb`, `hsl`, `hsv`, `hwb`, `cmyk`, `ansi`, `ansi16`, `hex` strings, and CSS `keyword`s (will round to closest): ```js var convert = require('color-convert'); convert.rgb.hsl(140, 200, 100); // [96, 48, 59] convert.keyword.rgb('blue'); // [0, 0, 255] var rgbChannels = convert.rgb.channels; // 3 var cmykChannels = convert.cmyk.channels; // 4 var ansiChannels = convert.ansi16.channels; // 1 ``` # Install ```console $ npm install color-convert ``` # API Simply get the property of the _from_ and _to_ conversion that you're looking for. All functions have a rounded and unrounded variant. By default, return values are rounded. To get the unrounded (raw) results, simply tack on `.raw` to the function. All 'from' functions have a hidden property called `.channels` that indicates the number of channels the function expects (not including alpha). ```js var convert = require('color-convert'); // Hex to LAB convert.hex.lab('DEADBF'); // [ 76, 21, -2 ] convert.hex.lab.raw('DEADBF'); // [ 75.56213190997677, 20.653827952644754, -2.290532499330533 ] // RGB to CMYK convert.rgb.cmyk(167, 255, 4); // [ 35, 0, 98, 0 ] convert.rgb.cmyk.raw(167, 255, 4); // [ 34.509803921568626, 0, 98.43137254901961, 0 ] ``` ### Arrays All functions that accept multiple arguments also support passing an array. Note that this does **not** apply to functions that convert from a color that only requires one value (e.g. `keyword`, `ansi256`, `hex`, etc.) ```js var convert = require('color-convert'); convert.rgb.hex(123, 45, 67); // '7B2D43' convert.rgb.hex([123, 45, 67]); // '7B2D43' ``` ## Routing Conversions that don't have an _explicitly_ defined conversion (in [conversions.js](conversions.js)), but can be converted by means of sub-conversions (e.g. XYZ -> **RGB** -> CMYK), are automatically routed together. This allows just about any color model supported by `color-convert` to be converted to any other model, so long as a sub-conversion path exists. This is also true for conversions requiring more than one step in between (e.g. LCH -> **LAB** -> **XYZ** -> **RGB** -> Hex). Keep in mind that extensive conversions _may_ result in a loss of precision, and exist only to be complete. For a list of "direct" (single-step) conversions, see [conversions.js](conversions.js). # Contribute If there is a new model you would like to support, or want to add a direct conversion between two existing models, please send us a pull request. # License Copyright &copy; 2011-2016, Heather Arthur and Josh Junon. Licensed under the [MIT License](LICENSE). # fast-deep-equal The fastest deep equal with ES6 Map, Set and Typed arrays support. [](https://travis-ci.org/epoberezkin/fast-deep-equal) [](https://www.npmjs.com/package/fast-deep-equal) [](https://coveralls.io/github/epoberezkin/fast-deep-equal?branch=master) ## Install ```bash npm install fast-deep-equal ``` ## Features - ES5 compatible - works in node.js (8+) and browsers (IE9+) - checks equality of Date and RegExp objects by value. ES6 equal (`require('fast-deep-equal/es6')`) also supports: - Maps - Sets - Typed arrays ## Usage ```javascript var equal = require('fast-deep-equal'); console.log(equal({foo: 'bar'}, {foo: 'bar'})); // true ``` To support ES6 Maps, Sets and Typed arrays equality use: ```javascript var equal = require('fast-deep-equal/es6'); console.log(equal(Int16Array([1, 2]), Int16Array([1, 2]))); // true ``` To use with React (avoiding the traversal of React elements' _owner property that contains circular references and is not needed when comparing the elements - borrowed from [react-fast-compare](https://github.com/FormidableLabs/react-fast-compare)): ```javascript var equal = require('fast-deep-equal/react'); var equal = require('fast-deep-equal/es6/react'); ``` ## Performance benchmark Node.js v12.6.0: ``` fast-deep-equal x 261,950 ops/sec ±0.52% (89 runs sampled) fast-deep-equal/es6 x 212,991 ops/sec ±0.34% (92 runs sampled) fast-equals x 230,957 ops/sec ±0.83% (85 runs sampled) nano-equal x 187,995 ops/sec ±0.53% (88 runs sampled) shallow-equal-fuzzy x 138,302 ops/sec ±0.49% (90 runs sampled) underscore.isEqual x 74,423 ops/sec ±0.38% (89 runs sampled) lodash.isEqual x 36,637 ops/sec ±0.72% (90 runs sampled) deep-equal x 2,310 ops/sec ±0.37% (90 runs sampled) deep-eql x 35,312 ops/sec ±0.67% (91 runs sampled) ramda.equals x 12,054 ops/sec ±0.40% (91 runs sampled) util.isDeepStrictEqual x 46,440 ops/sec ±0.43% (90 runs sampled) assert.deepStrictEqual x 456 ops/sec ±0.71% (88 runs sampled) The fastest is fast-deep-equal ``` To run benchmark (requires node.js 6+): ```bash npm run benchmark ``` __Please note__: this benchmark runs against the available test cases. To choose the most performant library for your application, it is recommended to benchmark against your data and to NOT expect this benchmark to reflect the performance difference in your application. ## Enterprise support fast-deep-equal package is a part of [Tidelift enterprise subscription](https://tidelift.com/subscription/pkg/npm-fast-deep-equal?utm_source=npm-fast-deep-equal&utm_medium=referral&utm_campaign=enterprise&utm_term=repo) - it provides a centralised commercial support to open-source software users, in addition to the support provided by software maintainers. ## Security contact To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. Please do NOT report security vulnerability via GitHub issues. ## License [MIT](https://github.com/epoberezkin/fast-deep-equal/blob/master/LICENSE) # balanced-match Match balanced string pairs, like `{` and `}` or `<b>` and `</b>`. Supports regular expressions as well! [](http://travis-ci.org/juliangruber/balanced-match) [](https://www.npmjs.org/package/balanced-match) [](https://ci.testling.com/juliangruber/balanced-match) ## Example Get the first matching pair of braces: ```js var balanced = require('balanced-match'); console.log(balanced('{', '}', 'pre{in{nested}}post')); console.log(balanced('{', '}', 'pre{first}between{second}post')); console.log(balanced(/\s+\{\s+/, /\s+\}\s+/, 'pre { in{nest} } post')); ``` The matches are: ```bash $ node example.js { start: 3, end: 14, pre: 'pre', body: 'in{nested}', post: 'post' } { start: 3, end: 9, pre: 'pre', body: 'first', post: 'between{second}post' } { start: 3, end: 17, pre: 'pre', body: 'in{nest}', post: 'post' } ``` ## API ### var m = balanced(a, b, str) For the first non-nested matching pair of `a` and `b` in `str`, return an object with those keys: * **start** the index of the first match of `a` * **end** the index of the matching `b` * **pre** the preamble, `a` and `b` not included * **body** the match, `a` and `b` not included * **post** the postscript, `a` and `b` not included If there's no match, `undefined` will be returned. If the `str` contains more `a` than `b` / there are unmatched pairs, the first match that was closed will be used. For example, `{{a}` will match `['{', 'a', '']` and `{a}}` will match `['', 'a', '}']`. ### var r = balanced.range(a, b, str) For the first non-nested matching pair of `a` and `b` in `str`, return an array with indexes: `[ <a index>, <b index> ]`. If there's no match, `undefined` will be returned. If the `str` contains more `a` than `b` / there are unmatched pairs, the first match that was closed will be used. For example, `{{a}` will match `[ 1, 3 ]` and `{a}}` will match `[0, 2]`. ## Installation With [npm](https://npmjs.org) do: ```bash npm install balanced-match ``` ## Security contact information To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. ## License (MIT) Copyright (c) 2013 Julian Gruber &lt;julian@juliangruber.com&gt; Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # Acorn A tiny, fast JavaScript parser written in JavaScript. ## Community Acorn is open source software released under an [MIT license](https://github.com/acornjs/acorn/blob/master/acorn/LICENSE). You are welcome to [report bugs](https://github.com/acornjs/acorn/issues) or create pull requests on [github](https://github.com/acornjs/acorn). For questions and discussion, please use the [Tern discussion forum](https://discuss.ternjs.net). ## Installation The easiest way to install acorn is from [`npm`](https://www.npmjs.com/): ```sh npm install acorn ``` Alternately, you can download the source and build acorn yourself: ```sh git clone https://github.com/acornjs/acorn.git cd acorn npm install ``` ## Interface **parse**`(input, options)` is the main interface to the library. The `input` parameter is a string, `options` can be undefined or an object setting some of the options listed below. The return value will be an abstract syntax tree object as specified by the [ESTree spec](https://github.com/estree/estree). ```javascript let acorn = require("acorn"); console.log(acorn.parse("1 + 1")); ``` When encountering a syntax error, the parser will raise a `SyntaxError` object with a meaningful message. The error object will have a `pos` property that indicates the string offset at which the error occurred, and a `loc` object that contains a `{line, column}` object referring to that same position. Options can be provided by passing a second argument, which should be an object containing any of these fields: - **ecmaVersion**: Indicates the ECMAScript version to parse. Must be either 3, 5, 6 (2015), 7 (2016), 8 (2017), 9 (2018), 10 (2019) or 11 (2020, partial support). This influences support for strict mode, the set of reserved words, and support for new syntax features. Default is 10. **NOTE**: Only 'stage 4' (finalized) ECMAScript features are being implemented by Acorn. Other proposed new features can be implemented through plugins. - **sourceType**: Indicate the mode the code should be parsed in. Can be either `"script"` or `"module"`. This influences global strict mode and parsing of `import` and `export` declarations. **NOTE**: If set to `"module"`, then static `import` / `export` syntax will be valid, even if `ecmaVersion` is less than 6. - **onInsertedSemicolon**: If given a callback, that callback will be called whenever a missing semicolon is inserted by the parser. The callback will be given the character offset of the point where the semicolon is inserted as argument, and if `locations` is on, also a `{line, column}` object representing this position. - **onTrailingComma**: Like `onInsertedSemicolon`, but for trailing commas. - **allowReserved**: If `false`, using a reserved word will generate an error. Defaults to `true` for `ecmaVersion` 3, `false` for higher versions. When given the value `"never"`, reserved words and keywords can also not be used as property names (as in Internet Explorer's old parser). - **allowReturnOutsideFunction**: By default, a return statement at the top level raises an error. Set this to `true` to accept such code. - **allowImportExportEverywhere**: By default, `import` and `export` declarations can only appear at a program's top level. Setting this option to `true` allows them anywhere where a statement is allowed. - **allowAwaitOutsideFunction**: By default, `await` expressions can only appear inside `async` functions. Setting this option to `true` allows to have top-level `await` expressions. They are still not allowed in non-`async` functions, though. - **allowHashBang**: When this is enabled (off by default), if the code starts with the characters `#!` (as in a shellscript), the first line will be treated as a comment. - **locations**: When `true`, each node has a `loc` object attached with `start` and `end` subobjects, each of which contains the one-based line and zero-based column numbers in `{line, column}` form. Default is `false`. - **onToken**: If a function is passed for this option, each found token will be passed in same format as tokens returned from `tokenizer().getToken()`. If array is passed, each found token is pushed to it. Note that you are not allowed to call the parser from the callback—that will corrupt its internal state. - **onComment**: If a function is passed for this option, whenever a comment is encountered the function will be called with the following parameters: - `block`: `true` if the comment is a block comment, false if it is a line comment. - `text`: The content of the comment. - `start`: Character offset of the start of the comment. - `end`: Character offset of the end of the comment. When the `locations` options is on, the `{line, column}` locations of the comment’s start and end are passed as two additional parameters. If array is passed for this option, each found comment is pushed to it as object in Esprima format: ```javascript { "type": "Line" | "Block", "value": "comment text", "start": Number, "end": Number, // If `locations` option is on: "loc": { "start": {line: Number, column: Number} "end": {line: Number, column: Number} }, // If `ranges` option is on: "range": [Number, Number] } ``` Note that you are not allowed to call the parser from the callback—that will corrupt its internal state. - **ranges**: Nodes have their start and end characters offsets recorded in `start` and `end` properties (directly on the node, rather than the `loc` object, which holds line/column data. To also add a [semi-standardized](https://bugzilla.mozilla.org/show_bug.cgi?id=745678) `range` property holding a `[start, end]` array with the same numbers, set the `ranges` option to `true`. - **program**: It is possible to parse multiple files into a single AST by passing the tree produced by parsing the first file as the `program` option in subsequent parses. This will add the toplevel forms of the parsed file to the "Program" (top) node of an existing parse tree. - **sourceFile**: When the `locations` option is `true`, you can pass this option to add a `source` attribute in every node’s `loc` object. Note that the contents of this option are not examined or processed in any way; you are free to use whatever format you choose. - **directSourceFile**: Like `sourceFile`, but a `sourceFile` property will be added (regardless of the `location` option) directly to the nodes, rather than the `loc` object. - **preserveParens**: If this option is `true`, parenthesized expressions are represented by (non-standard) `ParenthesizedExpression` nodes that have a single `expression` property containing the expression inside parentheses. **parseExpressionAt**`(input, offset, options)` will parse a single expression in a string, and return its AST. It will not complain if there is more of the string left after the expression. **tokenizer**`(input, options)` returns an object with a `getToken` method that can be called repeatedly to get the next token, a `{start, end, type, value}` object (with added `loc` property when the `locations` option is enabled and `range` property when the `ranges` option is enabled). When the token's type is `tokTypes.eof`, you should stop calling the method, since it will keep returning that same token forever. In ES6 environment, returned result can be used as any other protocol-compliant iterable: ```javascript for (let token of acorn.tokenizer(str)) { // iterate over the tokens } // transform code to array of tokens: var tokens = [...acorn.tokenizer(str)]; ``` **tokTypes** holds an object mapping names to the token type objects that end up in the `type` properties of tokens. **getLineInfo**`(input, offset)` can be used to get a `{line, column}` object for a given program string and offset. ### The `Parser` class Instances of the **`Parser`** class contain all the state and logic that drives a parse. It has static methods `parse`, `parseExpressionAt`, and `tokenizer` that match the top-level functions by the same name. When extending the parser with plugins, you need to call these methods on the extended version of the class. To extend a parser with plugins, you can use its static `extend` method. ```javascript var acorn = require("acorn"); var jsx = require("acorn-jsx"); var JSXParser = acorn.Parser.extend(jsx()); JSXParser.parse("foo(<bar/>)"); ``` The `extend` method takes any number of plugin values, and returns a new `Parser` class that includes the extra parser logic provided by the plugins. ## Command line interface The `bin/acorn` utility can be used to parse a file from the command line. It accepts as arguments its input file and the following options: - `--ecma3|--ecma5|--ecma6|--ecma7|--ecma8|--ecma9|--ecma10`: Sets the ECMAScript version to parse. Default is version 9. - `--module`: Sets the parsing mode to `"module"`. Is set to `"script"` otherwise. - `--locations`: Attaches a "loc" object to each node with "start" and "end" subobjects, each of which contains the one-based line and zero-based column numbers in `{line, column}` form. - `--allow-hash-bang`: If the code starts with the characters #! (as in a shellscript), the first line will be treated as a comment. - `--compact`: No whitespace is used in the AST output. - `--silent`: Do not output the AST, just return the exit status. - `--help`: Print the usage information and quit. The utility spits out the syntax tree as JSON data. ## Existing plugins - [`acorn-jsx`](https://github.com/RReverser/acorn-jsx): Parse [Facebook JSX syntax extensions](https://github.com/facebook/jsx) Plugins for ECMAScript proposals: - [`acorn-stage3`](https://github.com/acornjs/acorn-stage3): Parse most stage 3 proposals, bundling: - [`acorn-class-fields`](https://github.com/acornjs/acorn-class-fields): Parse [class fields proposal](https://github.com/tc39/proposal-class-fields) - [`acorn-import-meta`](https://github.com/acornjs/acorn-import-meta): Parse [import.meta proposal](https://github.com/tc39/proposal-import-meta) - [`acorn-private-methods`](https://github.com/acornjs/acorn-private-methods): parse [private methods, getters and setters proposal](https://github.com/tc39/proposal-private-methods)n # which-module > Find the module object for something that was require()d [](https://travis-ci.org/nexdrew/which-module) [](https://coveralls.io/github/nexdrew/which-module?branch=master) [](https://github.com/conventional-changelog/standard-version) Find the `module` object in `require.cache` for something that was `require()`d or `import`ed - essentially a reverse `require()` lookup. Useful for libs that want to e.g. lookup a filename for a module or submodule that it did not `require()` itself. ## Install and Usage ``` npm install --save which-module ``` ```js const whichModule = require('which-module') console.log(whichModule(require('something'))) // Module { // id: '/path/to/project/node_modules/something/index.js', // exports: [Function], // parent: ..., // filename: '/path/to/project/node_modules/something/index.js', // loaded: true, // children: [], // paths: [ '/path/to/project/node_modules/something/node_modules', // '/path/to/project/node_modules', // '/path/to/node_modules', // '/path/node_modules', // '/node_modules' ] } ``` ## API ### `whichModule(exported)` Return the [`module` object](https://nodejs.org/api/modules.html#modules_the_module_object), if any, that represents the given argument in the `require.cache`. `exported` can be anything that was previously `require()`d or `import`ed as a module, submodule, or dependency - which means `exported` is identical to the `module.exports` returned by this method. If `exported` did not come from the `exports` of a `module` in `require.cache`, then this method returns `null`. ## License ISC © Contributors functional-red-black-tree ========================= A [fully persistent](http://en.wikipedia.org/wiki/Persistent_data_structure) [red-black tree](http://en.wikipedia.org/wiki/Red%E2%80%93black_tree) written 100% in JavaScript. Works both in node.js and in the browser via [browserify](http://browserify.org/). Functional (or fully presistent) data structures allow for non-destructive updates. So if you insert an element into the tree, it returns a new tree with the inserted element rather than destructively updating the existing tree in place. Doing this requires using extra memory, and if one were naive it could cost as much as reallocating the entire tree. Instead, this data structure saves some memory by recycling references to previously allocated subtrees. This requires using only O(log(n)) additional memory per update instead of a full O(n) copy. Some advantages of this is that it is possible to apply insertions and removals to the tree while still iterating over previous versions of the tree. Functional and persistent data structures can also be useful in many geometric algorithms like point location within triangulations or ray queries, and can be used to analyze the history of executing various algorithms. This added power though comes at a cost, since it is generally a bit slower to use a functional data structure than an imperative version. However, if your application needs this behavior then you may consider using this module. # Install npm install functional-red-black-tree # Example Here is an example of some basic usage: ```javascript //Load the library var createTree = require("functional-red-black-tree") //Create a tree var t1 = createTree() //Insert some items into the tree var t2 = t1.insert(1, "foo") var t3 = t2.insert(2, "bar") //Remove something var t4 = t3.remove(1) ``` # API ```javascript var createTree = require("functional-red-black-tree") ``` ## Overview - [Tree methods](#tree-methods) - [`var tree = createTree([compare])`](#var-tree-=-createtreecompare) - [`tree.keys`](#treekeys) - [`tree.values`](#treevalues) - [`tree.length`](#treelength) - [`tree.get(key)`](#treegetkey) - [`tree.insert(key, value)`](#treeinsertkey-value) - [`tree.remove(key)`](#treeremovekey) - [`tree.find(key)`](#treefindkey) - [`tree.ge(key)`](#treegekey) - [`tree.gt(key)`](#treegtkey) - [`tree.lt(key)`](#treeltkey) - [`tree.le(key)`](#treelekey) - [`tree.at(position)`](#treeatposition) - [`tree.begin`](#treebegin) - [`tree.end`](#treeend) - [`tree.forEach(visitor(key,value)[, lo[, hi]])`](#treeforEachvisitorkeyvalue-lo-hi) - [`tree.root`](#treeroot) - [Node properties](#node-properties) - [`node.key`](#nodekey) - [`node.value`](#nodevalue) - [`node.left`](#nodeleft) - [`node.right`](#noderight) - [Iterator methods](#iterator-methods) - [`iter.key`](#iterkey) - [`iter.value`](#itervalue) - [`iter.node`](#iternode) - [`iter.tree`](#itertree) - [`iter.index`](#iterindex) - [`iter.valid`](#itervalid) - [`iter.clone()`](#iterclone) - [`iter.remove()`](#iterremove) - [`iter.update(value)`](#iterupdatevalue) - [`iter.next()`](#iternext) - [`iter.prev()`](#iterprev) - [`iter.hasNext`](#iterhasnext) - [`iter.hasPrev`](#iterhasprev) ## Tree methods ### `var tree = createTree([compare])` Creates an empty functional tree * `compare` is an optional comparison function, same semantics as array.sort() **Returns** An empty tree ordered by `compare` ### `tree.keys` A sorted array of all the keys in the tree ### `tree.values` An array array of all the values in the tree ### `tree.length` The number of items in the tree ### `tree.get(key)` Retrieves the value associated to the given key * `key` is the key of the item to look up **Returns** The value of the first node associated to `key` ### `tree.insert(key, value)` Creates a new tree with the new pair inserted. * `key` is the key of the item to insert * `value` is the value of the item to insert **Returns** A new tree with `key` and `value` inserted ### `tree.remove(key)` Removes the first item with `key` in the tree * `key` is the key of the item to remove **Returns** A new tree with the given item removed if it exists ### `tree.find(key)` Returns an iterator pointing to the first item in the tree with `key`, otherwise `null`. ### `tree.ge(key)` Find the first item in the tree whose key is `>= key` * `key` is the key to search for **Returns** An iterator at the given element. ### `tree.gt(key)` Finds the first item in the tree whose key is `> key` * `key` is the key to search for **Returns** An iterator at the given element ### `tree.lt(key)` Finds the last item in the tree whose key is `< key` * `key` is the key to search for **Returns** An iterator at the given element ### `tree.le(key)` Finds the last item in the tree whose key is `<= key` * `key` is the key to search for **Returns** An iterator at the given element ### `tree.at(position)` Finds an iterator starting at the given element * `position` is the index at which the iterator gets created **Returns** An iterator starting at position ### `tree.begin` An iterator pointing to the first element in the tree ### `tree.end` An iterator pointing to the last element in the tree ### `tree.forEach(visitor(key,value)[, lo[, hi]])` Walks a visitor function over the nodes of the tree in order. * `visitor(key,value)` is a callback that gets executed on each node. If a truthy value is returned from the visitor, then iteration is stopped. * `lo` is an optional start of the range to visit (inclusive) * `hi` is an optional end of the range to visit (non-inclusive) **Returns** The last value returned by the callback ### `tree.root` Returns the root node of the tree ## Node properties Each node of the tree has the following properties: ### `node.key` The key associated to the node ### `node.value` The value associated to the node ### `node.left` The left subtree of the node ### `node.right` The right subtree of the node ## Iterator methods ### `iter.key` The key of the item referenced by the iterator ### `iter.value` The value of the item referenced by the iterator ### `iter.node` The value of the node at the iterator's current position. `null` is iterator is node valid. ### `iter.tree` The tree associated to the iterator ### `iter.index` Returns the position of this iterator in the sequence. ### `iter.valid` Checks if the iterator is valid ### `iter.clone()` Makes a copy of the iterator ### `iter.remove()` Removes the item at the position of the iterator **Returns** A new binary search tree with `iter`'s item removed ### `iter.update(value)` Updates the value of the node in the tree at this iterator **Returns** A new binary search tree with the corresponding node updated ### `iter.next()` Advances the iterator to the next position ### `iter.prev()` Moves the iterator backward one element ### `iter.hasNext` If true, then the iterator is not at the end of the sequence ### `iter.hasPrev` If true, then the iterator is not at the beginning of the sequence # Credits (c) 2013 Mikola Lysenko. MIT License # regexpp [](https://www.npmjs.com/package/regexpp) [](http://www.npmtrends.com/regexpp) [](https://github.com/mysticatea/regexpp/actions) [](https://codecov.io/gh/mysticatea/regexpp) [](https://david-dm.org/mysticatea/regexpp) A regular expression parser for ECMAScript. ## 💿 Installation ```bash $ npm install regexpp ``` - require Node.js 8 or newer. ## 📖 Usage ```ts import { AST, RegExpParser, RegExpValidator, RegExpVisitor, parseRegExpLiteral, validateRegExpLiteral, visitRegExpAST } from "regexpp" ``` ### parseRegExpLiteral(source, options?) Parse a given regular expression literal then make AST object. This is equivalent to `new RegExpParser(options).parseLiteral(source)`. - **Parameters:** - `source` (`string | RegExp`) The source code to parse. - `options?` ([`RegExpParser.Options`]) The options to parse. - **Return:** - The AST of the regular expression. ### validateRegExpLiteral(source, options?) Validate a given regular expression literal. This is equivalent to `new RegExpValidator(options).validateLiteral(source)`. - **Parameters:** - `source` (`string`) The source code to validate. - `options?` ([`RegExpValidator.Options`]) The options to validate. ### visitRegExpAST(ast, handlers) Visit each node of a given AST. This is equivalent to `new RegExpVisitor(handlers).visit(ast)`. - **Parameters:** - `ast` ([`AST.Node`]) The AST to visit. - `handlers` ([`RegExpVisitor.Handlers`]) The callbacks. ### RegExpParser #### new RegExpParser(options?) - **Parameters:** - `options?` ([`RegExpParser.Options`]) The options to parse. #### parser.parseLiteral(source, start?, end?) Parse a regular expression literal. - **Parameters:** - `source` (`string`) The source code to parse. E.g. `"/abc/g"`. - `start?` (`number`) The start index in the source code. Default is `0`. - `end?` (`number`) The end index in the source code. Default is `source.length`. - **Return:** - The AST of the regular expression. #### parser.parsePattern(source, start?, end?, uFlag?) Parse a regular expression pattern. - **Parameters:** - `source` (`string`) The source code to parse. E.g. `"abc"`. - `start?` (`number`) The start index in the source code. Default is `0`. - `end?` (`number`) The end index in the source code. Default is `source.length`. - `uFlag?` (`boolean`) The flag to enable Unicode mode. - **Return:** - The AST of the regular expression pattern. #### parser.parseFlags(source, start?, end?) Parse a regular expression flags. - **Parameters:** - `source` (`string`) The source code to parse. E.g. `"gim"`. - `start?` (`number`) The start index in the source code. Default is `0`. - `end?` (`number`) The end index in the source code. Default is `source.length`. - **Return:** - The AST of the regular expression flags. ### RegExpValidator #### new RegExpValidator(options) - **Parameters:** - `options` ([`RegExpValidator.Options`]) The options to validate. #### validator.validateLiteral(source, start, end) Validate a regular expression literal. - **Parameters:** - `source` (`string`) The source code to validate. - `start?` (`number`) The start index in the source code. Default is `0`. - `end?` (`number`) The end index in the source code. Default is `source.length`. #### validator.validatePattern(source, start, end, uFlag) Validate a regular expression pattern. - **Parameters:** - `source` (`string`) The source code to validate. - `start?` (`number`) The start index in the source code. Default is `0`. - `end?` (`number`) The end index in the source code. Default is `source.length`. - `uFlag?` (`boolean`) The flag to enable Unicode mode. #### validator.validateFlags(source, start, end) Validate a regular expression flags. - **Parameters:** - `source` (`string`) The source code to validate. - `start?` (`number`) The start index in the source code. Default is `0`. - `end?` (`number`) The end index in the source code. Default is `source.length`. ### RegExpVisitor #### new RegExpVisitor(handlers) - **Parameters:** - `handlers` ([`RegExpVisitor.Handlers`]) The callbacks. #### visitor.visit(ast) Validate a regular expression literal. - **Parameters:** - `ast` ([`AST.Node`]) The AST to visit. ## 📰 Changelog - [GitHub Releases](https://github.com/mysticatea/regexpp/releases) ## 🍻 Contributing Welcome contributing! Please use GitHub's Issues/PRs. ### Development Tools - `npm test` runs tests and measures coverage. - `npm run build` compiles TypeScript source code to `index.js`, `index.js.map`, and `index.d.ts`. - `npm run clean` removes the temporary files which are created by `npm test` and `npm run build`. - `npm run lint` runs ESLint. - `npm run update:test` updates test fixtures. - `npm run update:ids` updates `src/unicode/ids.ts`. - `npm run watch` runs tests with `--watch` option. [`AST.Node`]: src/ast.ts#L4 [`RegExpParser.Options`]: src/parser.ts#L539 [`RegExpValidator.Options`]: src/validator.ts#L127 [`RegExpVisitor.Handlers`]: src/visitor.ts#L204 # whatwg-url whatwg-url is a full implementation of the WHATWG [URL Standard](https://url.spec.whatwg.org/). It can be used standalone, but it also exposes a lot of the internal algorithms that are useful for integrating a URL parser into a project like [jsdom](https://github.com/tmpvar/jsdom). ## Specification conformance whatwg-url is currently up to date with the URL spec up to commit [7ae1c69](https://github.com/whatwg/url/commit/7ae1c691c96f0d82fafa24c33aa1e8df9ffbf2bc). For `file:` URLs, whose [origin is left unspecified](https://url.spec.whatwg.org/#concept-url-origin), whatwg-url chooses to use a new opaque origin (which serializes to `"null"`). ## API ### The `URL` and `URLSearchParams` classes The main API is provided by the [`URL`](https://url.spec.whatwg.org/#url-class) and [`URLSearchParams`](https://url.spec.whatwg.org/#interface-urlsearchparams) exports, which follows the spec's behavior in all ways (including e.g. `USVString` conversion). Most consumers of this library will want to use these. ### Low-level URL Standard API The following methods are exported for use by places like jsdom that need to implement things like [`HTMLHyperlinkElementUtils`](https://html.spec.whatwg.org/#htmlhyperlinkelementutils). They mostly operate on or return an "internal URL" or ["URL record"](https://url.spec.whatwg.org/#concept-url) type. - [URL parser](https://url.spec.whatwg.org/#concept-url-parser): `parseURL(input, { baseURL, encodingOverride })` - [Basic URL parser](https://url.spec.whatwg.org/#concept-basic-url-parser): `basicURLParse(input, { baseURL, encodingOverride, url, stateOverride })` - [URL serializer](https://url.spec.whatwg.org/#concept-url-serializer): `serializeURL(urlRecord, excludeFragment)` - [Host serializer](https://url.spec.whatwg.org/#concept-host-serializer): `serializeHost(hostFromURLRecord)` - [Serialize an integer](https://url.spec.whatwg.org/#serialize-an-integer): `serializeInteger(number)` - [Origin](https://url.spec.whatwg.org/#concept-url-origin) [serializer](https://html.spec.whatwg.org/multipage/origin.html#ascii-serialisation-of-an-origin): `serializeURLOrigin(urlRecord)` - [Set the username](https://url.spec.whatwg.org/#set-the-username): `setTheUsername(urlRecord, usernameString)` - [Set the password](https://url.spec.whatwg.org/#set-the-password): `setThePassword(urlRecord, passwordString)` - [Cannot have a username/password/port](https://url.spec.whatwg.org/#cannot-have-a-username-password-port): `cannotHaveAUsernamePasswordPort(urlRecord)` - [Percent decode](https://url.spec.whatwg.org/#percent-decode): `percentDecode(buffer)` The `stateOverride` parameter is one of the following strings: - [`"scheme start"`](https://url.spec.whatwg.org/#scheme-start-state) - [`"scheme"`](https://url.spec.whatwg.org/#scheme-state) - [`"no scheme"`](https://url.spec.whatwg.org/#no-scheme-state) - [`"special relative or authority"`](https://url.spec.whatwg.org/#special-relative-or-authority-state) - [`"path or authority"`](https://url.spec.whatwg.org/#path-or-authority-state) - [`"relative"`](https://url.spec.whatwg.org/#relative-state) - [`"relative slash"`](https://url.spec.whatwg.org/#relative-slash-state) - [`"special authority slashes"`](https://url.spec.whatwg.org/#special-authority-slashes-state) - [`"special authority ignore slashes"`](https://url.spec.whatwg.org/#special-authority-ignore-slashes-state) - [`"authority"`](https://url.spec.whatwg.org/#authority-state) - [`"host"`](https://url.spec.whatwg.org/#host-state) - [`"hostname"`](https://url.spec.whatwg.org/#hostname-state) - [`"port"`](https://url.spec.whatwg.org/#port-state) - [`"file"`](https://url.spec.whatwg.org/#file-state) - [`"file slash"`](https://url.spec.whatwg.org/#file-slash-state) - [`"file host"`](https://url.spec.whatwg.org/#file-host-state) - [`"path start"`](https://url.spec.whatwg.org/#path-start-state) - [`"path"`](https://url.spec.whatwg.org/#path-state) - [`"cannot-be-a-base-URL path"`](https://url.spec.whatwg.org/#cannot-be-a-base-url-path-state) - [`"query"`](https://url.spec.whatwg.org/#query-state) - [`"fragment"`](https://url.spec.whatwg.org/#fragment-state) The URL record type has the following API: - [`scheme`](https://url.spec.whatwg.org/#concept-url-scheme) - [`username`](https://url.spec.whatwg.org/#concept-url-username) - [`password`](https://url.spec.whatwg.org/#concept-url-password) - [`host`](https://url.spec.whatwg.org/#concept-url-host) - [`port`](https://url.spec.whatwg.org/#concept-url-port) - [`path`](https://url.spec.whatwg.org/#concept-url-path) (as an array) - [`query`](https://url.spec.whatwg.org/#concept-url-query) - [`fragment`](https://url.spec.whatwg.org/#concept-url-fragment) - [`cannotBeABaseURL`](https://url.spec.whatwg.org/#url-cannot-be-a-base-url-flag) (as a boolean) These properties should be treated with care, as in general changing them will cause the URL record to be in an inconsistent state until the appropriate invocation of `basicURLParse` is used to fix it up. You can see examples of this in the URL Standard, where there are many step sequences like "4. Set context object’s url’s fragment to the empty string. 5. Basic URL parse _input_ with context object’s url as _url_ and fragment state as _state override_." In between those two steps, a URL record is in an unusable state. The return value of "failure" in the spec is represented by `null`. That is, functions like `parseURL` and `basicURLParse` can return _either_ a URL record _or_ `null`. ## Development instructions First, install [Node.js](https://nodejs.org/). Then, fetch the dependencies of whatwg-url, by running from this directory: npm install To run tests: npm test To generate a coverage report: npm run coverage To build and run the live viewer: npm run build npm run build-live-viewer Serve the contents of the `live-viewer` directory using any web server. ## Supporting whatwg-url The jsdom project (including whatwg-url) is a community-driven project maintained by a team of [volunteers](https://github.com/orgs/jsdom/people). You could support us by: - [Getting professional support for whatwg-url](https://tidelift.com/subscription/pkg/npm-whatwg-url?utm_source=npm-whatwg-url&utm_medium=referral&utm_campaign=readme) as part of a Tidelift subscription. Tidelift helps making open source sustainable for us while giving teams assurances for maintenance, licensing, and security. - Contributing directly to the project. # lodash.merge v4.6.2 The [Lodash](https://lodash.com/) method `_.merge` exported as a [Node.js](https://nodejs.org/) module. ## Installation Using npm: ```bash $ {sudo -H} npm i -g npm $ npm i --save lodash.merge ``` In Node.js: ```js var merge = require('lodash.merge'); ``` See the [documentation](https://lodash.com/docs#merge) or [package source](https://github.com/lodash/lodash/blob/4.6.2-npm-packages/lodash.merge) for more details. # is-core-module <sup>[![Version Badge][2]][1]</sup> [![github actions][actions-image]][actions-url] [![coverage][codecov-image]][codecov-url] [![dependency status][5]][6] [![dev dependency status][7]][8] [![License][license-image]][license-url] [![Downloads][downloads-image]][downloads-url] [![npm badge][11]][1] Is this specifier a node.js core module? Optionally provide a node version to check; defaults to the current node version. ## Example ```js var isCore = require('is-core-module'); var assert = require('assert'); assert(isCore('fs')); assert(!isCore('butts')); ``` ## Tests Clone the repo, `npm install`, and run `npm test` [1]: https://npmjs.org/package/is-core-module [2]: https://versionbadg.es/inspect-js/is-core-module.svg [5]: https://david-dm.org/inspect-js/is-core-module.svg [6]: https://david-dm.org/inspect-js/is-core-module [7]: https://david-dm.org/inspect-js/is-core-module/dev-status.svg [8]: https://david-dm.org/inspect-js/is-core-module#info=devDependencies [11]: https://nodei.co/npm/is-core-module.png?downloads=true&stars=true [license-image]: https://img.shields.io/npm/l/is-core-module.svg [license-url]: LICENSE [downloads-image]: https://img.shields.io/npm/dm/is-core-module.svg [downloads-url]: https://npm-stat.com/charts.html?package=is-core-module [codecov-image]: https://codecov.io/gh/inspect-js/is-core-module/branch/main/graphs/badge.svg [codecov-url]: https://app.codecov.io/gh/inspect-js/is-core-module/ [actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/inspect-js/is-core-module [actions-url]: https://github.com/inspect-js/is-core-module/actions # v8-compile-cache [](https://travis-ci.org/zertosh/v8-compile-cache) `v8-compile-cache` attaches a `require` hook to use [V8's code cache](https://v8project.blogspot.com/2015/07/code-caching.html) to speed up instantiation time. The "code cache" is the work of parsing and compiling done by V8. The ability to tap into V8 to produce/consume this cache was introduced in [Node v5.7.0](https://nodejs.org/en/blog/release/v5.7.0/). ## Usage 1. Add the dependency: ```sh $ npm install --save v8-compile-cache ``` 2. Then, in your entry module add: ```js require('v8-compile-cache'); ``` **Requiring `v8-compile-cache` in Node <5.7.0 is a noop – but you need at least Node 4.0.0 to support the ES2015 syntax used by `v8-compile-cache`.** ## Options Set the environment variable `DISABLE_V8_COMPILE_CACHE=1` to disable the cache. Cache directory is defined by environment variable `V8_COMPILE_CACHE_CACHE_DIR` or defaults to `<os.tmpdir()>/v8-compile-cache-<V8_VERSION>`. ## Internals Cache files are suffixed `.BLOB` and `.MAP` corresponding to the entry module that required `v8-compile-cache`. The cache is _entry module specific_ because it is faster to load the entire code cache into memory at once, than it is to read it from disk on a file-by-file basis. ## Benchmarks See https://github.com/zertosh/v8-compile-cache/tree/master/bench. **Load Times:** | Module | Without Cache | With Cache | | ---------------- | -------------:| ----------:| | `babel-core` | `218ms` | `185ms` | | `yarn` | `153ms` | `113ms` | | `yarn` (bundled) | `228ms` | `105ms` | _^ Includes the overhead of loading the cache itself._ ## Acknowledgements * `FileSystemBlobStore` and `NativeCompileCache` are based on Atom's implementation of their v8 compile cache: - https://github.com/atom/atom/blob/b0d7a8a/src/file-system-blob-store.js - https://github.com/atom/atom/blob/b0d7a8a/src/native-compile-cache.js * `mkdirpSync` is based on: - https://github.com/substack/node-mkdirp/blob/f2003bb/index.js#L55-L98 iMurmurHash.js ============== An incremental implementation of the MurmurHash3 (32-bit) hashing algorithm for JavaScript based on [Gary Court's implementation](https://github.com/garycourt/murmurhash-js) with [kazuyukitanimura's modifications](https://github.com/kazuyukitanimura/murmurhash-js). This version works significantly faster than the non-incremental version if you need to hash many small strings into a single hash, since string concatenation (to build the single string to pass the non-incremental version) is fairly costly. In one case tested, using the incremental version was about 50% faster than concatenating 5-10 strings and then hashing. Installation ------------ To use iMurmurHash in the browser, [download the latest version](https://raw.github.com/jensyt/imurmurhash-js/master/imurmurhash.min.js) and include it as a script on your site. ```html <script type="text/javascript" src="/scripts/imurmurhash.min.js"></script> <script> // Your code here, access iMurmurHash using the global object MurmurHash3 </script> ``` --- To use iMurmurHash in Node.js, install the module using NPM: ```bash npm install imurmurhash ``` Then simply include it in your scripts: ```javascript MurmurHash3 = require('imurmurhash'); ``` Quick Example ------------- ```javascript // Create the initial hash var hashState = MurmurHash3('string'); // Incrementally add text hashState.hash('more strings'); hashState.hash('even more strings'); // All calls can be chained if desired hashState.hash('and').hash('some').hash('more'); // Get a result hashState.result(); // returns 0xe4ccfe6b ``` Functions --------- ### MurmurHash3 ([string], [seed]) Get a hash state object, optionally initialized with the given _string_ and _seed_. _Seed_ must be a positive integer if provided. Calling this function without the `new` keyword will return a cached state object that has been reset. This is safe to use as long as the object is only used from a single thread and no other hashes are created while operating on this one. If this constraint cannot be met, you can use `new` to create a new state object. For example: ```javascript // Use the cached object, calling the function again will return the same // object (but reset, so the current state would be lost) hashState = MurmurHash3(); ... // Create a new object that can be safely used however you wish. Calling the // function again will simply return a new state object, and no state loss // will occur, at the cost of creating more objects. hashState = new MurmurHash3(); ``` Both methods can be mixed however you like if you have different use cases. --- ### MurmurHash3.prototype.hash (string) Incrementally add _string_ to the hash. This can be called as many times as you want for the hash state object, including after a call to `result()`. Returns `this` so calls can be chained. --- ### MurmurHash3.prototype.result () Get the result of the hash as a 32-bit positive integer. This performs the tail and finalizer portions of the algorithm, but does not store the result in the state object. This means that it is perfectly safe to get results and then continue adding strings via `hash`. ```javascript // Do the whole string at once MurmurHash3('this is a test string').result(); // 0x70529328 // Do part of the string, get a result, then the other part var m = MurmurHash3('this is a'); m.result(); // 0xbfc4f834 m.hash(' test string').result(); // 0x70529328 (same as above) ``` --- ### MurmurHash3.prototype.reset ([seed]) Reset the state object for reuse, optionally using the given _seed_ (defaults to 0 like the constructor). Returns `this` so calls can be chained. --- License (MIT) ------------- Copyright (c) 2013 Gary Court, Jens Taylor Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Compiler frontend for node.js ============================= Usage ----- For an up to date list of available command line options, see: ``` $> asc --help ``` API --- The API accepts the same options as the CLI but also lets you override stdout and stderr and/or provide a callback. Example: ```js const asc = require("assemblyscript/cli/asc"); asc.ready.then(() => { asc.main([ "myModule.ts", "--binaryFile", "myModule.wasm", "--optimize", "--sourceMap", "--measure" ], { stdout: process.stdout, stderr: process.stderr }, function(err) { if (err) throw err; ... }); }); ``` Available command line options can also be obtained programmatically: ```js const options = require("assemblyscript/cli/asc.json"); ... ``` You can also compile a source string directly, for example in a browser environment: ```js const asc = require("assemblyscript/cli/asc"); asc.ready.then(() => { const { binary, text, stdout, stderr } = asc.compileString(`...`, { optimize: 2 }); }); ... ``` # Near Bindings Generator Transforms the Assembyscript AST to serialize exported functions and add `encode` and `decode` functions for generating and parsing JSON strings. ## Using via CLI After installling, `npm install nearprotocol/near-bindgen-as`, it can be added to the cli arguments of the assemblyscript compiler you must add the following: ```bash asc <file> --transform near-bindgen-as ... ``` This module also adds a binary `near-asc` which adds the default arguments required to build near contracts as well as the transformer. ```bash near-asc <input file> <output file> ``` ## Using a script to compile Another way is to add a file such as `asconfig.js` such as: ```js const compile = require("near-bindgen-as/compiler").compile; compile("assembly/index.ts", // input file "out/index.wasm", // output file [ // "-O1", // Optional arguments "--debug", "--measure" ], // Prints out the final cli arguments passed to compiler. {verbose: true} ); ``` It can then be built with `node asconfig.js`. There is an example of this in the test directory. # json-schema-traverse Traverse JSON Schema passing each schema object to callback [](https://travis-ci.org/epoberezkin/json-schema-traverse) [](https://www.npmjs.com/package/json-schema-traverse) [](https://coveralls.io/github/epoberezkin/json-schema-traverse?branch=master) ## Install ``` npm install json-schema-traverse ``` ## Usage ```javascript const traverse = require('json-schema-traverse'); const schema = { properties: { foo: {type: 'string'}, bar: {type: 'integer'} } }; traverse(schema, {cb}); // cb is called 3 times with: // 1. root schema // 2. {type: 'string'} // 3. {type: 'integer'} // Or: traverse(schema, {cb: {pre, post}}); // pre is called 3 times with: // 1. root schema // 2. {type: 'string'} // 3. {type: 'integer'} // // post is called 3 times with: // 1. {type: 'string'} // 2. {type: 'integer'} // 3. root schema ``` Callback function `cb` is called for each schema object (not including draft-06 boolean schemas), including the root schema, in pre-order traversal. Schema references ($ref) are not resolved, they are passed as is. Alternatively, you can pass a `{pre, post}` object as `cb`, and then `pre` will be called before traversing child elements, and `post` will be called after all child elements have been traversed. Callback is passed these parameters: - _schema_: the current schema object - _JSON pointer_: from the root schema to the current schema object - _root schema_: the schema passed to `traverse` object - _parent JSON pointer_: from the root schema to the parent schema object (see below) - _parent keyword_: the keyword inside which this schema appears (e.g. `properties`, `anyOf`, etc.) - _parent schema_: not necessarily parent object/array; in the example above the parent schema for `{type: 'string'}` is the root schema - _index/property_: index or property name in the array/object containing multiple schemas; in the example above for `{type: 'string'}` the property name is `'foo'` ## Traverse objects in all unknown keywords ```javascript const traverse = require('json-schema-traverse'); const schema = { mySchema: { minimum: 1, maximum: 2 } }; traverse(schema, {allKeys: true, cb}); // cb is called 2 times with: // 1. root schema // 2. mySchema ``` Without option `allKeys: true` callback will be called only with root schema. ## License [MIT](https://github.com/epoberezkin/json-schema-traverse/blob/master/LICENSE) [![NPM version][npm-image]][npm-url] [![build status][travis-image]][travis-url] [![Test coverage][coveralls-image]][coveralls-url] [![Downloads][downloads-image]][downloads-url] [](https://gitter.im/eslint/doctrine?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) # Doctrine Doctrine is a [JSDoc](http://usejsdoc.org) parser that parses documentation comments from JavaScript (you need to pass in the comment, not a whole JavaScript file). ## Installation You can install Doctrine using [npm](https://npmjs.com): ``` $ npm install doctrine --save-dev ``` Doctrine can also be used in web browsers using [Browserify](http://browserify.org). ## Usage Require doctrine inside of your JavaScript: ```js var doctrine = require("doctrine"); ``` ### parse() The primary method is `parse()`, which accepts two arguments: the JSDoc comment to parse and an optional options object. The available options are: * `unwrap` - set to `true` to delete the leading `/**`, any `*` that begins a line, and the trailing `*/` from the source text. Default: `false`. * `tags` - an array of tags to return. When specified, Doctrine returns only tags in this array. For example, if `tags` is `["param"]`, then only `@param` tags will be returned. Default: `null`. * `recoverable` - set to `true` to keep parsing even when syntax errors occur. Default: `false`. * `sloppy` - set to `true` to allow optional parameters to be specified in brackets (`@param {string} [foo]`). Default: `false`. * `lineNumbers` - set to `true` to add `lineNumber` to each node, specifying the line on which the node is found in the source. Default: `false`. * `range` - set to `true` to add `range` to each node, specifying the start and end index of the node in the original comment. Default: `false`. Here's a simple example: ```js var ast = doctrine.parse( [ "/**", " * This function comment is parsed by doctrine", " * @param {{ok:String}} userName", "*/" ].join('\n'), { unwrap: true }); ``` This example returns the following AST: { "description": "This function comment is parsed by doctrine", "tags": [ { "title": "param", "description": null, "type": { "type": "RecordType", "fields": [ { "type": "FieldType", "key": "ok", "value": { "type": "NameExpression", "name": "String" } } ] }, "name": "userName" } ] } See the [demo page](http://eslint.org/doctrine/demo/) more detail. ## Team These folks keep the project moving and are resources for help: * Nicholas C. Zakas ([@nzakas](https://github.com/nzakas)) - project lead * Yusuke Suzuki ([@constellation](https://github.com/constellation)) - reviewer ## Contributing Issues and pull requests will be triaged and responded to as quickly as possible. We operate under the [ESLint Contributor Guidelines](http://eslint.org/docs/developer-guide/contributing), so please be sure to read them before contributing. If you're not sure where to dig in, check out the [issues](https://github.com/eslint/doctrine/issues). ## Frequently Asked Questions ### Can I pass a whole JavaScript file to Doctrine? No. Doctrine can only parse JSDoc comments, so you'll need to pass just the JSDoc comment to Doctrine in order to work. ### License #### doctrine Copyright JS Foundation and other contributors, https://js.foundation Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. #### esprima some of functions is derived from esprima Copyright (C) 2012, 2011 [Ariya Hidayat](http://ariya.ofilabs.com/about) (twitter: [@ariyahidayat](http://twitter.com/ariyahidayat)) and other contributors. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #### closure-compiler some of extensions is derived from closure-compiler Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ ### Where to ask for help? Join our [Chatroom](https://gitter.im/eslint/doctrine) [npm-image]: https://img.shields.io/npm/v/doctrine.svg?style=flat-square [npm-url]: https://www.npmjs.com/package/doctrine [travis-image]: https://img.shields.io/travis/eslint/doctrine/master.svg?style=flat-square [travis-url]: https://travis-ci.org/eslint/doctrine [coveralls-image]: https://img.shields.io/coveralls/eslint/doctrine/master.svg?style=flat-square [coveralls-url]: https://coveralls.io/r/eslint/doctrine?branch=master [downloads-image]: http://img.shields.io/npm/dm/doctrine.svg?style=flat-square [downloads-url]: https://www.npmjs.com/package/doctrine ### Estraverse [](http://travis-ci.org/estools/estraverse) Estraverse ([estraverse](http://github.com/estools/estraverse)) is [ECMAScript](http://www.ecma-international.org/publications/standards/Ecma-262.htm) traversal functions from [esmangle project](http://github.com/estools/esmangle). ### Documentation You can find usage docs at [wiki page](https://github.com/estools/estraverse/wiki/Usage). ### Example Usage The following code will output all variables declared at the root of a file. ```javascript estraverse.traverse(ast, { enter: function (node, parent) { if (node.type == 'FunctionExpression' || node.type == 'FunctionDeclaration') return estraverse.VisitorOption.Skip; }, leave: function (node, parent) { if (node.type == 'VariableDeclarator') console.log(node.id.name); } }); ``` We can use `this.skip`, `this.remove` and `this.break` functions instead of using Skip, Remove and Break. ```javascript estraverse.traverse(ast, { enter: function (node) { this.break(); } }); ``` And estraverse provides `estraverse.replace` function. When returning node from `enter`/`leave`, current node is replaced with it. ```javascript result = estraverse.replace(tree, { enter: function (node) { // Replace it with replaced. if (node.type === 'Literal') return replaced; } }); ``` By passing `visitor.keys` mapping, we can extend estraverse traversing functionality. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Extending the existing traversing rules. keys: { // TargetNodeName: [ 'keys', 'containing', 'the', 'other', '**node**' ] TestExpression: ['argument'] } }); ``` By passing `visitor.fallback` option, we can control the behavior when encountering unknown nodes. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Iterating the child **nodes** of unknown nodes. fallback: 'iteration' }); ``` When `visitor.fallback` is a function, we can determine which keys to visit on each node. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Skip the `argument` property of each node fallback: function(node) { return Object.keys(node).filter(function(key) { return key !== 'argument'; }); } }); ``` ### License Copyright (C) 2012-2016 [Yusuke Suzuki](http://github.com/Constellation) (twitter: [@Constellation](http://twitter.com/Constellation)) and other contributors. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. <a name="table"></a> # Table > Produces a string that represents array data in a text table. [](https://github.com/gajus/table/actions) [](https://coveralls.io/github/gajus/table) [](https://www.npmjs.org/package/table) [](https://github.com/gajus/canonical) [](https://twitter.com/kuizinas) * [Table](#table) * [Features](#table-features) * [Install](#table-install) * [Usage](#table-usage) * [API](#table-api) * [table](#table-api-table-1) * [createStream](#table-api-createstream) * [getBorderCharacters](#table-api-getbordercharacters)  <a name="table-features"></a> ## Features * Works with strings containing [fullwidth](https://en.wikipedia.org/wiki/Halfwidth_and_fullwidth_forms) characters. * Works with strings containing [ANSI escape codes](https://en.wikipedia.org/wiki/ANSI_escape_code). * Configurable border characters. * Configurable content alignment per column. * Configurable content padding per column. * Configurable column width. * Text wrapping. <a name="table-install"></a> ## Install ```bash npm install table ``` [](https://www.buymeacoffee.com/gajus) [](https://www.patreon.com/gajus) <a name="table-usage"></a> ## Usage ```js import { table } from 'table'; // Using commonjs? // const { table } = require('table'); const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'] ]; console.log(table(data)); ``` ``` ╔════╤════╤════╗ ║ 0A │ 0B │ 0C ║ ╟────┼────┼────╢ ║ 1A │ 1B │ 1C ║ ╟────┼────┼────╢ ║ 2A │ 2B │ 2C ║ ╚════╧════╧════╝ ``` <a name="table-api"></a> ## API <a name="table-api-table-1"></a> ### table Returns the string in the table format **Parameters:** - **_data_:** The data to display - Type: `any[][]` - Required: `true` - **_config_:** Table configuration - Type: `object` - Required: `false` <a name="table-api-table-1-config-border"></a> ##### config.border Type: `{ [type: string]: string }`\ Default: `honeywell` [template](#getbordercharacters) Custom borders. The keys are any of: - `topLeft`, `topRight`, `topBody`,`topJoin` - `bottomLeft`, `bottomRight`, `bottomBody`, `bottomJoin` - `joinLeft`, `joinRight`, `joinBody`, `joinJoin` - `bodyLeft`, `bodyRight`, `bodyJoin` - `headerJoin` ```js const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'] ]; const config = { border: { topBody: `─`, topJoin: `┬`, topLeft: `┌`, topRight: `┐`, bottomBody: `─`, bottomJoin: `┴`, bottomLeft: `└`, bottomRight: `┘`, bodyLeft: `│`, bodyRight: `│`, bodyJoin: `│`, joinBody: `─`, joinLeft: `├`, joinRight: `┤`, joinJoin: `┼` } }; console.log(table(data, config)); ``` ``` ┌────┬────┬────┐ │ 0A │ 0B │ 0C │ ├────┼────┼────┤ │ 1A │ 1B │ 1C │ ├────┼────┼────┤ │ 2A │ 2B │ 2C │ └────┴────┴────┘ ``` <a name="table-api-table-1-config-drawverticalline"></a> ##### config.drawVerticalLine Type: `(lineIndex: number, columnCount: number) => boolean`\ Default: `() => true` It is used to tell whether to draw a vertical line. This callback is called for each vertical border of the table. If the table has `n` columns, then the `index` parameter is alternatively received all numbers in range `[0, n]` inclusively. ```js const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'], ['3A', '3B', '3C'], ['4A', '4B', '4C'] ]; const config = { drawVerticalLine: (lineIndex, columnCount) => { return lineIndex === 0 || lineIndex === columnCount; } }; console.log(table(data, config)); ``` ``` ╔════════════╗ ║ 0A 0B 0C ║ ╟────────────╢ ║ 1A 1B 1C ║ ╟────────────╢ ║ 2A 2B 2C ║ ╟────────────╢ ║ 3A 3B 3C ║ ╟────────────╢ ║ 4A 4B 4C ║ ╚════════════╝ ``` <a name="table-api-table-1-config-drawhorizontalline"></a> ##### config.drawHorizontalLine Type: `(lineIndex: number, rowCount: number) => boolean`\ Default: `() => true` It is used to tell whether to draw a horizontal line. This callback is called for each horizontal border of the table. If the table has `n` rows, then the `index` parameter is alternatively received all numbers in range `[0, n]` inclusively. If the table has `n` rows and contains the header, then the range will be `[0, n+1]` inclusively. ```js const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'], ['3A', '3B', '3C'], ['4A', '4B', '4C'] ]; const config = { drawHorizontalLine: (lineIndex, rowCount) => { return lineIndex === 0 || lineIndex === 1 || lineIndex === rowCount - 1 || lineIndex === rowCount; } }; console.log(table(data, config)); ``` ``` ╔════╤════╤════╗ ║ 0A │ 0B │ 0C ║ ╟────┼────┼────╢ ║ 1A │ 1B │ 1C ║ ║ 2A │ 2B │ 2C ║ ║ 3A │ 3B │ 3C ║ ╟────┼────┼────╢ ║ 4A │ 4B │ 4C ║ ╚════╧════╧════╝ ``` <a name="table-api-table-1-config-singleline"></a> ##### config.singleLine Type: `boolean`\ Default: `false` If `true`, horizontal lines inside the table are not drawn. This option also overrides the `config.drawHorizontalLine` if specified. ```js const data = [ ['-rw-r--r--', '1', 'pandorym', 'staff', '1529', 'May 23 11:25', 'LICENSE'], ['-rw-r--r--', '1', 'pandorym', 'staff', '16327', 'May 23 11:58', 'README.md'], ['drwxr-xr-x', '76', 'pandorym', 'staff', '2432', 'May 23 12:02', 'dist'], ['drwxr-xr-x', '634', 'pandorym', 'staff', '20288', 'May 23 11:54', 'node_modules'], ['-rw-r--r--', '1,', 'pandorym', 'staff', '525688', 'May 23 11:52', 'package-lock.json'], ['-rw-r--r--@', '1', 'pandorym', 'staff', '2440', 'May 23 11:25', 'package.json'], ['drwxr-xr-x', '27', 'pandorym', 'staff', '864', 'May 23 11:25', 'src'], ['drwxr-xr-x', '20', 'pandorym', 'staff', '640', 'May 23 11:25', 'test'], ]; const config = { singleLine: true }; console.log(table(data, config)); ``` ``` ╔═════════════╤═════╤══════════╤═══════╤════════╤══════════════╤═══════════════════╗ ║ -rw-r--r-- │ 1 │ pandorym │ staff │ 1529 │ May 23 11:25 │ LICENSE ║ ║ -rw-r--r-- │ 1 │ pandorym │ staff │ 16327 │ May 23 11:58 │ README.md ║ ║ drwxr-xr-x │ 76 │ pandorym │ staff │ 2432 │ May 23 12:02 │ dist ║ ║ drwxr-xr-x │ 634 │ pandorym │ staff │ 20288 │ May 23 11:54 │ node_modules ║ ║ -rw-r--r-- │ 1, │ pandorym │ staff │ 525688 │ May 23 11:52 │ package-lock.json ║ ║ -rw-r--r--@ │ 1 │ pandorym │ staff │ 2440 │ May 23 11:25 │ package.json ║ ║ drwxr-xr-x │ 27 │ pandorym │ staff │ 864 │ May 23 11:25 │ src ║ ║ drwxr-xr-x │ 20 │ pandorym │ staff │ 640 │ May 23 11:25 │ test ║ ╚═════════════╧═════╧══════════╧═══════╧════════╧══════════════╧═══════════════════╝ ``` <a name="table-api-table-1-config-columns"></a> ##### config.columns Type: `Column[] | { [columnIndex: number]: Column }` Column specific configurations. <a name="table-api-table-1-config-columns-config-columns-width"></a> ###### config.columns[*].width Type: `number`\ Default: the maximum cell widths of the column Column width (excluding the paddings). ```js const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'] ]; const config = { columns: { 1: { width: 10 } } }; console.log(table(data, config)); ``` ``` ╔════╤════════════╤════╗ ║ 0A │ 0B │ 0C ║ ╟────┼────────────┼────╢ ║ 1A │ 1B │ 1C ║ ╟────┼────────────┼────╢ ║ 2A │ 2B │ 2C ║ ╚════╧════════════╧════╝ ``` <a name="table-api-table-1-config-columns-config-columns-alignment"></a> ###### config.columns[*].alignment Type: `'center' | 'justify' | 'left' | 'right'`\ Default: `'left'` Cell content horizontal alignment ```js const data = [ ['0A', '0B', '0C', '0D 0E 0F'], ['1A', '1B', '1C', '1D 1E 1F'], ['2A', '2B', '2C', '2D 2E 2F'], ]; const config = { columnDefault: { width: 10, }, columns: [ { alignment: 'left' }, { alignment: 'center' }, { alignment: 'right' }, { alignment: 'justify' } ], }; console.log(table(data, config)); ``` ``` ╔════════════╤════════════╤════════════╤════════════╗ ║ 0A │ 0B │ 0C │ 0D 0E 0F ║ ╟────────────┼────────────┼────────────┼────────────╢ ║ 1A │ 1B │ 1C │ 1D 1E 1F ║ ╟────────────┼────────────┼────────────┼────────────╢ ║ 2A │ 2B │ 2C │ 2D 2E 2F ║ ╚════════════╧════════════╧════════════╧════════════╝ ``` <a name="table-api-table-1-config-columns-config-columns-verticalalignment"></a> ###### config.columns[*].verticalAlignment Type: `'top' | 'middle' | 'bottom'`\ Default: `'top'` Cell content vertical alignment ```js const data = [ ['A', 'B', 'C', 'DEF'], ]; const config = { columnDefault: { width: 1, }, columns: [ { verticalAlignment: 'top' }, { verticalAlignment: 'middle' }, { verticalAlignment: 'bottom' }, ], }; console.log(table(data, config)); ``` ``` ╔═══╤═══╤═══╤═══╗ ║ A │ │ │ D ║ ║ │ B │ │ E ║ ║ │ │ C │ F ║ ╚═══╧═══╧═══╧═══╝ ``` <a name="table-api-table-1-config-columns-config-columns-paddingleft"></a> ###### config.columns[*].paddingLeft Type: `number`\ Default: `1` The number of whitespaces used to pad the content on the left. <a name="table-api-table-1-config-columns-config-columns-paddingright"></a> ###### config.columns[*].paddingRight Type: `number`\ Default: `1` The number of whitespaces used to pad the content on the right. The `paddingLeft` and `paddingRight` options do not count on the column width. So the column has `width = 5`, `paddingLeft = 2` and `paddingRight = 2` will have the total width is `9`. ```js const data = [ ['0A', 'AABBCC', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'] ]; const config = { columns: [ { paddingLeft: 3 }, { width: 2, paddingRight: 3 } ] }; console.log(table(data, config)); ``` ``` ╔══════╤══════╤════╗ ║ 0A │ AA │ 0C ║ ║ │ BB │ ║ ║ │ CC │ ║ ╟──────┼──────┼────╢ ║ 1A │ 1B │ 1C ║ ╟──────┼──────┼────╢ ║ 2A │ 2B │ 2C ║ ╚══════╧══════╧════╝ ``` <a name="table-api-table-1-config-columns-config-columns-truncate"></a> ###### config.columns[*].truncate Type: `number`\ Default: `Infinity` The number of characters is which the content will be truncated. To handle a content that overflows the container width, `table` package implements [text wrapping](#config.columns[*].wrapWord). However, sometimes you may want to truncate content that is too long to be displayed in the table. ```js const data = [ ['Lorem ipsum dolor sit amet, consectetur adipiscing elit. Phasellus pulvinar nibh sed mauris convallis dapibus. Nunc venenatis tempus nulla sit amet viverra.'] ]; const config = { columns: [ { width: 20, truncate: 100 } ] }; console.log(table(data, config)); ``` ``` ╔══════════════════════╗ ║ Lorem ipsum dolor si ║ ║ t amet, consectetur ║ ║ adipiscing elit. Pha ║ ║ sellus pulvinar nibh ║ ║ sed mauris convall… ║ ╚══════════════════════╝ ``` <a name="table-api-table-1-config-columns-config-columns-wrapword"></a> ###### config.columns[*].wrapWord Type: `boolean`\ Default: `false` The `table` package implements auto text wrapping, i.e., text that has the width greater than the container width will be separated into multiple lines at the nearest space or one of the special characters: `\|/_.,;-`. When `wrapWord` is `false`: ```js const data = [ ['Lorem ipsum dolor sit amet, consectetur adipiscing elit. Phasellus pulvinar nibh sed mauris convallis dapibus. Nunc venenatis tempus nulla sit amet viverra.'] ]; const config = { columns: [ { width: 20 } ] }; console.log(table(data, config)); ``` ``` ╔══════════════════════╗ ║ Lorem ipsum dolor si ║ ║ t amet, consectetur ║ ║ adipiscing elit. Pha ║ ║ sellus pulvinar nibh ║ ║ sed mauris convallis ║ ║ dapibus. Nunc venena ║ ║ tis tempus nulla sit ║ ║ amet viverra. ║ ╚══════════════════════╝ ``` When `wrapWord` is `true`: ``` ╔══════════════════════╗ ║ Lorem ipsum dolor ║ ║ sit amet, ║ ║ consectetur ║ ║ adipiscing elit. ║ ║ Phasellus pulvinar ║ ║ nibh sed mauris ║ ║ convallis dapibus. ║ ║ Nunc venenatis ║ ║ tempus nulla sit ║ ║ amet viverra. ║ ╚══════════════════════╝ ``` <a name="table-api-table-1-config-columndefault"></a> ##### config.columnDefault Type: `Column`\ Default: `{}` The default configuration for all columns. Column-specific settings will overwrite the default values. <a name="table-api-table-1-config-header"></a> ##### config.header Type: `object` Header configuration. *Deprecated in favor of the new spanning cells API.* The header configuration inherits the most of the column's, except: - `content` **{string}**: the header content. - `width:` calculate based on the content width automatically. - `alignment:` `center` be default. - `verticalAlignment:` is not supported. - `config.border.topJoin` will be `config.border.topBody` for prettier. ```js const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'], ]; const config = { columnDefault: { width: 10, }, header: { alignment: 'center', content: 'THE HEADER\nThis is the table about something', }, } console.log(table(data, config)); ``` ``` ╔══════════════════════════════════════╗ ║ THE HEADER ║ ║ This is the table about something ║ ╟────────────┬────────────┬────────────╢ ║ 0A │ 0B │ 0C ║ ╟────────────┼────────────┼────────────╢ ║ 1A │ 1B │ 1C ║ ╟────────────┼────────────┼────────────╢ ║ 2A │ 2B │ 2C ║ ╚════════════╧════════════╧════════════╝ ``` <a name="table-api-table-1-config-spanningcells"></a> ##### config.spanningCells Type: `SpanningCellConfig[]` Spanning cells configuration. The configuration should be straightforward: just specify an array of minimal cell configurations including the position of top-left cell and the number of columns and/or rows will be expanded from it. The content of overlap cells will be ignored to make the `data` shape be consistent. By default, the configuration of column that the top-left cell belongs to will be applied to the whole spanning cell, except: * The `width` will be summed up of all spanning columns. * The `paddingRight` will be received from the right-most column intentionally. Advances customized column-like styles can be configurable to each spanning cell to overwrite the default behavior. ```js const data = [ ['Test Coverage Report', '', '', '', '', ''], ['Module', 'Component', 'Test Cases', 'Failures', 'Durations', 'Success Rate'], ['Services', 'User', '50', '30', '3m 7s', '60.0%'], ['', 'Payment', '100', '80', '7m 15s', '80.0%'], ['Subtotal', '', '150', '110', '10m 22s', '73.3%'], ['Controllers', 'User', '24', '18', '1m 30s', '75.0%'], ['', 'Payment', '30', '24', '50s', '80.0%'], ['Subtotal', '', '54', '42', '2m 20s', '77.8%'], ['Total', '', '204', '152', '12m 42s', '74.5%'], ]; const config = { columns: [ { alignment: 'center', width: 12 }, { alignment: 'center', width: 10 }, { alignment: 'right' }, { alignment: 'right' }, { alignment: 'right' }, { alignment: 'right' } ], spanningCells: [ { col: 0, row: 0, colSpan: 6 }, { col: 0, row: 2, rowSpan: 2, verticalAlignment: 'middle'}, { col: 0, row: 4, colSpan: 2, alignment: 'right'}, { col: 0, row: 5, rowSpan: 2, verticalAlignment: 'middle'}, { col: 0, row: 7, colSpan: 2, alignment: 'right' }, { col: 0, row: 8, colSpan: 2, alignment: 'right' } ], }; console.log(table(data, config)); ``` ``` ╔══════════════════════════════════════════════════════════════════════════════╗ ║ Test Coverage Report ║ ╟──────────────┬────────────┬────────────┬──────────┬───────────┬──────────────╢ ║ Module │ Component │ Test Cases │ Failures │ Durations │ Success Rate ║ ╟──────────────┼────────────┼────────────┼──────────┼───────────┼──────────────╢ ║ │ User │ 50 │ 30 │ 3m 7s │ 60.0% ║ ║ Services ├────────────┼────────────┼──────────┼───────────┼──────────────╢ ║ │ Payment │ 100 │ 80 │ 7m 15s │ 80.0% ║ ╟──────────────┴────────────┼────────────┼──────────┼───────────┼──────────────╢ ║ Subtotal │ 150 │ 110 │ 10m 22s │ 73.3% ║ ╟──────────────┬────────────┼────────────┼──────────┼───────────┼──────────────╢ ║ │ User │ 24 │ 18 │ 1m 30s │ 75.0% ║ ║ Controllers ├────────────┼────────────┼──────────┼───────────┼──────────────╢ ║ │ Payment │ 30 │ 24 │ 50s │ 80.0% ║ ╟──────────────┴────────────┼────────────┼──────────┼───────────┼──────────────╢ ║ Subtotal │ 54 │ 42 │ 2m 20s │ 77.8% ║ ╟───────────────────────────┼────────────┼──────────┼───────────┼──────────────╢ ║ Total │ 204 │ 152 │ 12m 42s │ 74.5% ║ ╚═══════════════════════════╧════════════╧══════════╧═══════════╧══════════════╝ ``` <a name="table-api-createstream"></a> ### createStream `table` package exports `createStream` function used to draw a table and append rows. **Parameter:** - _**config:**_ the same as `table`'s, except `config.columnDefault.width` and `config.columnCount` must be provided. ```js import { createStream } from 'table'; const config = { columnDefault: { width: 50 }, columnCount: 1 }; const stream = createStream(config); setInterval(() => { stream.write([new Date()]); }, 500); ```  `table` package uses ANSI escape codes to overwrite the output of the last line when a new row is printed. The underlying implementation is explained in this [Stack Overflow answer](http://stackoverflow.com/a/32938658/368691). Streaming supports all of the configuration properties and functionality of a static table (such as auto text wrapping, alignment and padding), e.g. ```js import { createStream } from 'table'; import _ from 'lodash'; const config = { columnDefault: { width: 50 }, columnCount: 3, columns: [ { width: 10, alignment: 'right' }, { alignment: 'center' }, { width: 10 } ] }; const stream = createStream(config); let i = 0; setInterval(() => { let random; random = _.sample('abcdefghijklmnopqrstuvwxyz', _.random(1, 30)).join(''); stream.write([i++, new Date(), random]); }, 500); ```  <a name="table-api-getbordercharacters"></a> ### getBorderCharacters **Parameter:** - **_template_** - Type: `'honeywell' | 'norc' | 'ramac' | 'void'` - Required: `true` You can load one of the predefined border templates using `getBorderCharacters` function. ```js import { table, getBorderCharacters } from 'table'; const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'] ]; const config = { border: getBorderCharacters(`name of the template`) }; console.log(table(data, config)); ``` ``` # honeywell ╔════╤════╤════╗ ║ 0A │ 0B │ 0C ║ ╟────┼────┼────╢ ║ 1A │ 1B │ 1C ║ ╟────┼────┼────╢ ║ 2A │ 2B │ 2C ║ ╚════╧════╧════╝ # norc ┌────┬────┬────┐ │ 0A │ 0B │ 0C │ ├────┼────┼────┤ │ 1A │ 1B │ 1C │ ├────┼────┼────┤ │ 2A │ 2B │ 2C │ └────┴────┴────┘ # ramac (ASCII; for use in terminals that do not support Unicode characters) +----+----+----+ | 0A | 0B | 0C | |----|----|----| | 1A | 1B | 1C | |----|----|----| | 2A | 2B | 2C | +----+----+----+ # void (no borders; see "borderless table" section of the documentation) 0A 0B 0C 1A 1B 1C 2A 2B 2C ``` Raise [an issue](https://github.com/gajus/table/issues) if you'd like to contribute a new border template. <a name="table-api-getbordercharacters-borderless-table"></a> #### Borderless Table Simply using `void` border character template creates a table with a lot of unnecessary spacing. To create a more pleasant to the eye table, reset the padding and remove the joining rows, e.g. ```js const output = table(data, { border: getBorderCharacters('void'), columnDefault: { paddingLeft: 0, paddingRight: 1 }, drawHorizontalLine: () => false } ); console.log(output); ``` ``` 0A 0B 0C 1A 1B 1C 2A 2B 2C ``` # ansi-colors [](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W8YFZ425KND68) [](https://www.npmjs.com/package/ansi-colors) [](https://npmjs.org/package/ansi-colors) [](https://npmjs.org/package/ansi-colors) [](https://travis-ci.org/doowb/ansi-colors) > Easily add ANSI colors to your text and symbols in the terminal. A faster drop-in replacement for chalk, kleur and turbocolor (without the dependencies and rendering bugs). Please consider following this project's author, [Brian Woodward](https://github.com/doowb), and consider starring the project to show your :heart: and support. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save ansi-colors ```  ## Why use this? ansi-colors is _the fastest Node.js library for terminal styling_. A more performant drop-in replacement for chalk, with no dependencies. * _Blazing fast_ - Fastest terminal styling library in node.js, 10-20x faster than chalk! * _Drop-in replacement_ for [chalk](https://github.com/chalk/chalk). * _No dependencies_ (Chalk has 7 dependencies in its tree!) * _Safe_ - Does not modify the `String.prototype` like [colors](https://github.com/Marak/colors.js). * Supports [nested colors](#nested-colors), **and does not have the [nested styling bug](#nested-styling-bug) that is present in [colorette](https://github.com/jorgebucaran/colorette), [chalk](https://github.com/chalk/chalk), and [kleur](https://github.com/lukeed/kleur)**. * Supports [chained colors](#chained-colors). * [Toggle color support](#toggle-color-support) on or off. ## Usage ```js const c = require('ansi-colors'); console.log(c.red('This is a red string!')); console.log(c.green('This is a red string!')); console.log(c.cyan('This is a cyan string!')); console.log(c.yellow('This is a yellow string!')); ```  ## Chained colors ```js console.log(c.bold.red('this is a bold red message')); console.log(c.bold.yellow.italic('this is a bold yellow italicized message')); console.log(c.green.bold.underline('this is a bold green underlined message')); ```  ## Nested colors ```js console.log(c.yellow(`foo ${c.red.bold('red')} bar ${c.cyan('cyan')} baz`)); ```  ### Nested styling bug `ansi-colors` does not have the nested styling bug found in [colorette](https://github.com/jorgebucaran/colorette), [chalk](https://github.com/chalk/chalk), and [kleur](https://github.com/lukeed/kleur). ```js const { bold, red } = require('ansi-styles'); console.log(bold(`foo ${red.dim('bar')} baz`)); const colorette = require('colorette'); console.log(colorette.bold(`foo ${colorette.red(colorette.dim('bar'))} baz`)); const kleur = require('kleur'); console.log(kleur.bold(`foo ${kleur.red.dim('bar')} baz`)); const chalk = require('chalk'); console.log(chalk.bold(`foo ${chalk.red.dim('bar')} baz`)); ``` **Results in the following** (sans icons and labels)  ## Toggle color support Easily enable/disable colors. ```js const c = require('ansi-colors'); // disable colors manually c.enabled = false; // or use a library to automatically detect support c.enabled = require('color-support').hasBasic; console.log(c.red('I will only be colored red if the terminal supports colors')); ``` ## Strip ANSI codes Use the `.unstyle` method to strip ANSI codes from a string. ```js console.log(c.unstyle(c.blue.bold('foo bar baz'))); //=> 'foo bar baz' ``` ## Available styles **Note** that bright and bright-background colors are not always supported. | Colors | Background Colors | Bright Colors | Bright Background Colors | | ------- | ----------------- | ------------- | ------------------------ | | black | bgBlack | blackBright | bgBlackBright | | red | bgRed | redBright | bgRedBright | | green | bgGreen | greenBright | bgGreenBright | | yellow | bgYellow | yellowBright | bgYellowBright | | blue | bgBlue | blueBright | bgBlueBright | | magenta | bgMagenta | magentaBright | bgMagentaBright | | cyan | bgCyan | cyanBright | bgCyanBright | | white | bgWhite | whiteBright | bgWhiteBright | | gray | | | | | grey | | | | _(`gray` is the U.S. spelling, `grey` is more commonly used in the Canada and U.K.)_ ### Style modifiers * dim * **bold** * hidden * _italic_ * underline * inverse * ~~strikethrough~~ * reset ## Aliases Create custom aliases for styles. ```js const colors = require('ansi-colors'); colors.alias('primary', colors.yellow); colors.alias('secondary', colors.bold); console.log(colors.primary.secondary('Foo')); ``` ## Themes A theme is an object of custom aliases. ```js const colors = require('ansi-colors'); colors.theme({ danger: colors.red, dark: colors.dim.gray, disabled: colors.gray, em: colors.italic, heading: colors.bold.underline, info: colors.cyan, muted: colors.dim, primary: colors.blue, strong: colors.bold, success: colors.green, underline: colors.underline, warning: colors.yellow }); // Now, we can use our custom styles alongside the built-in styles! console.log(colors.danger.strong.em('Error!')); console.log(colors.warning('Heads up!')); console.log(colors.info('Did you know...')); console.log(colors.success.bold('It worked!')); ``` ## Performance **Libraries tested** * ansi-colors v3.0.4 * chalk v2.4.1 ### Mac > MacBook Pro, Intel Core i7, 2.3 GHz, 16 GB. **Load time** Time it takes to load the first time `require()` is called: * ansi-colors - `1.915ms` * chalk - `12.437ms` **Benchmarks** ``` # All Colors ansi-colors x 173,851 ops/sec ±0.42% (91 runs sampled) chalk x 9,944 ops/sec ±2.53% (81 runs sampled))) # Chained colors ansi-colors x 20,791 ops/sec ±0.60% (88 runs sampled) chalk x 2,111 ops/sec ±2.34% (83 runs sampled) # Nested colors ansi-colors x 59,304 ops/sec ±0.98% (92 runs sampled) chalk x 4,590 ops/sec ±2.08% (82 runs sampled) ``` ### Windows > Windows 10, Intel Core i7-7700k CPU @ 4.2 GHz, 32 GB **Load time** Time it takes to load the first time `require()` is called: * ansi-colors - `1.494ms` * chalk - `11.523ms` **Benchmarks** ``` # All Colors ansi-colors x 193,088 ops/sec ±0.51% (95 runs sampled)) chalk x 9,612 ops/sec ±3.31% (77 runs sampled))) # Chained colors ansi-colors x 26,093 ops/sec ±1.13% (94 runs sampled) chalk x 2,267 ops/sec ±2.88% (80 runs sampled)) # Nested colors ansi-colors x 67,747 ops/sec ±0.49% (93 runs sampled) chalk x 4,446 ops/sec ±3.01% (82 runs sampled)) ``` ## About <details> <summary><strong>Contributing</strong></summary> Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). </details> <details> <summary><strong>Running Tests</strong></summary> Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` </details> <details> <summary><strong>Building docs</strong></summary> _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` </details> ### Related projects You might also be interested in these projects: * [ansi-wrap](https://www.npmjs.com/package/ansi-wrap): Create ansi colors by passing the open and close codes. | [homepage](https://github.com/jonschlinkert/ansi-wrap "Create ansi colors by passing the open and close codes.") * [strip-color](https://www.npmjs.com/package/strip-color): Strip ANSI color codes from a string. No dependencies. | [homepage](https://github.com/jonschlinkert/strip-color "Strip ANSI color codes from a string. No dependencies.") ### Contributors | **Commits** | **Contributor** | | --- | --- | | 48 | [jonschlinkert](https://github.com/jonschlinkert) | | 42 | [doowb](https://github.com/doowb) | | 6 | [lukeed](https://github.com/lukeed) | | 2 | [Silic0nS0ldier](https://github.com/Silic0nS0ldier) | | 1 | [dwieeb](https://github.com/dwieeb) | | 1 | [jorgebucaran](https://github.com/jorgebucaran) | | 1 | [madhavarshney](https://github.com/madhavarshney) | | 1 | [chapterjason](https://github.com/chapterjason) | ### Author **Brian Woodward** * [GitHub Profile](https://github.com/doowb) * [Twitter Profile](https://twitter.com/doowb) * [LinkedIn Profile](https://linkedin.com/in/woodwardbrian) ### License Copyright © 2019, [Brian Woodward](https://github.com/doowb). Released under the [MIT License](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.8.0, on July 01, 2019._ # ESLint Scope ESLint Scope is the [ECMAScript](http://www.ecma-international.org/publications/standards/Ecma-262.htm) scope analyzer used in ESLint. It is a fork of [escope](http://github.com/estools/escope). ## Usage Install: ``` npm i eslint-scope --save ``` Example: ```js var eslintScope = require('eslint-scope'); var espree = require('espree'); var estraverse = require('estraverse'); var ast = espree.parse(code); var scopeManager = eslintScope.analyze(ast); var currentScope = scopeManager.acquire(ast); // global scope estraverse.traverse(ast, { enter: function(node, parent) { // do stuff if (/Function/.test(node.type)) { currentScope = scopeManager.acquire(node); // get current function scope } }, leave: function(node, parent) { if (/Function/.test(node.type)) { currentScope = currentScope.upper; // set to parent scope } // do stuff } }); ``` ## Contributing Issues and pull requests will be triaged and responded to as quickly as possible. We operate under the [ESLint Contributor Guidelines](http://eslint.org/docs/developer-guide/contributing), so please be sure to read them before contributing. If you're not sure where to dig in, check out the [issues](https://github.com/eslint/eslint-scope/issues). ## Build Commands * `npm test` - run all linting and tests * `npm run lint` - run all linting ## License ESLint Scope is licensed under a permissive BSD 2-clause license. # safe-buffer [![travis][travis-image]][travis-url] [![npm][npm-image]][npm-url] [![downloads][downloads-image]][downloads-url] [![javascript style guide][standard-image]][standard-url] [travis-image]: https://img.shields.io/travis/feross/safe-buffer/master.svg [travis-url]: https://travis-ci.org/feross/safe-buffer [npm-image]: https://img.shields.io/npm/v/safe-buffer.svg [npm-url]: https://npmjs.org/package/safe-buffer [downloads-image]: https://img.shields.io/npm/dm/safe-buffer.svg [downloads-url]: https://npmjs.org/package/safe-buffer [standard-image]: https://img.shields.io/badge/code_style-standard-brightgreen.svg [standard-url]: https://standardjs.com #### Safer Node.js Buffer API **Use the new Node.js Buffer APIs (`Buffer.from`, `Buffer.alloc`, `Buffer.allocUnsafe`, `Buffer.allocUnsafeSlow`) in all versions of Node.js.** **Uses the built-in implementation when available.** ## install ``` npm install safe-buffer ``` ## usage The goal of this package is to provide a safe replacement for the node.js `Buffer`. It's a drop-in replacement for `Buffer`. You can use it by adding one `require` line to the top of your node.js modules: ```js var Buffer = require('safe-buffer').Buffer // Existing buffer code will continue to work without issues: new Buffer('hey', 'utf8') new Buffer([1, 2, 3], 'utf8') new Buffer(obj) new Buffer(16) // create an uninitialized buffer (potentially unsafe) // But you can use these new explicit APIs to make clear what you want: Buffer.from('hey', 'utf8') // convert from many types to a Buffer Buffer.alloc(16) // create a zero-filled buffer (safe) Buffer.allocUnsafe(16) // create an uninitialized buffer (potentially unsafe) ``` ## api ### Class Method: Buffer.from(array) <!-- YAML added: v3.0.0 --> * `array` {Array} Allocates a new `Buffer` using an `array` of octets. ```js const buf = Buffer.from([0x62,0x75,0x66,0x66,0x65,0x72]); // creates a new Buffer containing ASCII bytes // ['b','u','f','f','e','r'] ``` A `TypeError` will be thrown if `array` is not an `Array`. ### Class Method: Buffer.from(arrayBuffer[, byteOffset[, length]]) <!-- YAML added: v5.10.0 --> * `arrayBuffer` {ArrayBuffer} The `.buffer` property of a `TypedArray` or a `new ArrayBuffer()` * `byteOffset` {Number} Default: `0` * `length` {Number} Default: `arrayBuffer.length - byteOffset` When passed a reference to the `.buffer` property of a `TypedArray` instance, the newly created `Buffer` will share the same allocated memory as the TypedArray. ```js const arr = new Uint16Array(2); arr[0] = 5000; arr[1] = 4000; const buf = Buffer.from(arr.buffer); // shares the memory with arr; console.log(buf); // Prints: <Buffer 88 13 a0 0f> // changing the TypedArray changes the Buffer also arr[1] = 6000; console.log(buf); // Prints: <Buffer 88 13 70 17> ``` The optional `byteOffset` and `length` arguments specify a memory range within the `arrayBuffer` that will be shared by the `Buffer`. ```js const ab = new ArrayBuffer(10); const buf = Buffer.from(ab, 0, 2); console.log(buf.length); // Prints: 2 ``` A `TypeError` will be thrown if `arrayBuffer` is not an `ArrayBuffer`. ### Class Method: Buffer.from(buffer) <!-- YAML added: v3.0.0 --> * `buffer` {Buffer} Copies the passed `buffer` data onto a new `Buffer` instance. ```js const buf1 = Buffer.from('buffer'); const buf2 = Buffer.from(buf1); buf1[0] = 0x61; console.log(buf1.toString()); // 'auffer' console.log(buf2.toString()); // 'buffer' (copy is not changed) ``` A `TypeError` will be thrown if `buffer` is not a `Buffer`. ### Class Method: Buffer.from(str[, encoding]) <!-- YAML added: v5.10.0 --> * `str` {String} String to encode. * `encoding` {String} Encoding to use, Default: `'utf8'` Creates a new `Buffer` containing the given JavaScript string `str`. If provided, the `encoding` parameter identifies the character encoding. If not provided, `encoding` defaults to `'utf8'`. ```js const buf1 = Buffer.from('this is a tést'); console.log(buf1.toString()); // prints: this is a tést console.log(buf1.toString('ascii')); // prints: this is a tC)st const buf2 = Buffer.from('7468697320697320612074c3a97374', 'hex'); console.log(buf2.toString()); // prints: this is a tést ``` A `TypeError` will be thrown if `str` is not a string. ### Class Method: Buffer.alloc(size[, fill[, encoding]]) <!-- YAML added: v5.10.0 --> * `size` {Number} * `fill` {Value} Default: `undefined` * `encoding` {String} Default: `utf8` Allocates a new `Buffer` of `size` bytes. If `fill` is `undefined`, the `Buffer` will be *zero-filled*. ```js const buf = Buffer.alloc(5); console.log(buf); // <Buffer 00 00 00 00 00> ``` The `size` must be less than or equal to the value of `require('buffer').kMaxLength` (on 64-bit architectures, `kMaxLength` is `(2^31)-1`). Otherwise, a [`RangeError`][] is thrown. A zero-length Buffer will be created if a `size` less than or equal to 0 is specified. If `fill` is specified, the allocated `Buffer` will be initialized by calling `buf.fill(fill)`. See [`buf.fill()`][] for more information. ```js const buf = Buffer.alloc(5, 'a'); console.log(buf); // <Buffer 61 61 61 61 61> ``` If both `fill` and `encoding` are specified, the allocated `Buffer` will be initialized by calling `buf.fill(fill, encoding)`. For example: ```js const buf = Buffer.alloc(11, 'aGVsbG8gd29ybGQ=', 'base64'); console.log(buf); // <Buffer 68 65 6c 6c 6f 20 77 6f 72 6c 64> ``` Calling `Buffer.alloc(size)` can be significantly slower than the alternative `Buffer.allocUnsafe(size)` but ensures that the newly created `Buffer` instance contents will *never contain sensitive data*. A `TypeError` will be thrown if `size` is not a number. ### Class Method: Buffer.allocUnsafe(size) <!-- YAML added: v5.10.0 --> * `size` {Number} Allocates a new *non-zero-filled* `Buffer` of `size` bytes. The `size` must be less than or equal to the value of `require('buffer').kMaxLength` (on 64-bit architectures, `kMaxLength` is `(2^31)-1`). Otherwise, a [`RangeError`][] is thrown. A zero-length Buffer will be created if a `size` less than or equal to 0 is specified. The underlying memory for `Buffer` instances created in this way is *not initialized*. The contents of the newly created `Buffer` are unknown and *may contain sensitive data*. Use [`buf.fill(0)`][] to initialize such `Buffer` instances to zeroes. ```js const buf = Buffer.allocUnsafe(5); console.log(buf); // <Buffer 78 e0 82 02 01> // (octets will be different, every time) buf.fill(0); console.log(buf); // <Buffer 00 00 00 00 00> ``` A `TypeError` will be thrown if `size` is not a number. Note that the `Buffer` module pre-allocates an internal `Buffer` instance of size `Buffer.poolSize` that is used as a pool for the fast allocation of new `Buffer` instances created using `Buffer.allocUnsafe(size)` (and the deprecated `new Buffer(size)` constructor) only when `size` is less than or equal to `Buffer.poolSize >> 1` (floor of `Buffer.poolSize` divided by two). The default value of `Buffer.poolSize` is `8192` but can be modified. Use of this pre-allocated internal memory pool is a key difference between calling `Buffer.alloc(size, fill)` vs. `Buffer.allocUnsafe(size).fill(fill)`. Specifically, `Buffer.alloc(size, fill)` will *never* use the internal Buffer pool, while `Buffer.allocUnsafe(size).fill(fill)` *will* use the internal Buffer pool if `size` is less than or equal to half `Buffer.poolSize`. The difference is subtle but can be important when an application requires the additional performance that `Buffer.allocUnsafe(size)` provides. ### Class Method: Buffer.allocUnsafeSlow(size) <!-- YAML added: v5.10.0 --> * `size` {Number} Allocates a new *non-zero-filled* and non-pooled `Buffer` of `size` bytes. The `size` must be less than or equal to the value of `require('buffer').kMaxLength` (on 64-bit architectures, `kMaxLength` is `(2^31)-1`). Otherwise, a [`RangeError`][] is thrown. A zero-length Buffer will be created if a `size` less than or equal to 0 is specified. The underlying memory for `Buffer` instances created in this way is *not initialized*. The contents of the newly created `Buffer` are unknown and *may contain sensitive data*. Use [`buf.fill(0)`][] to initialize such `Buffer` instances to zeroes. When using `Buffer.allocUnsafe()` to allocate new `Buffer` instances, allocations under 4KB are, by default, sliced from a single pre-allocated `Buffer`. This allows applications to avoid the garbage collection overhead of creating many individually allocated Buffers. This approach improves both performance and memory usage by eliminating the need to track and cleanup as many `Persistent` objects. However, in the case where a developer may need to retain a small chunk of memory from a pool for an indeterminate amount of time, it may be appropriate to create an un-pooled Buffer instance using `Buffer.allocUnsafeSlow()` then copy out the relevant bits. ```js // need to keep around a few small chunks of memory const store = []; socket.on('readable', () => { const data = socket.read(); // allocate for retained data const sb = Buffer.allocUnsafeSlow(10); // copy the data into the new allocation data.copy(sb, 0, 0, 10); store.push(sb); }); ``` Use of `Buffer.allocUnsafeSlow()` should be used only as a last resort *after* a developer has observed undue memory retention in their applications. A `TypeError` will be thrown if `size` is not a number. ### All the Rest The rest of the `Buffer` API is exactly the same as in node.js. [See the docs](https://nodejs.org/api/buffer.html). ## Related links - [Node.js issue: Buffer(number) is unsafe](https://github.com/nodejs/node/issues/4660) - [Node.js Enhancement Proposal: Buffer.from/Buffer.alloc/Buffer.zalloc/Buffer() soft-deprecate](https://github.com/nodejs/node-eps/pull/4) ## Why is `Buffer` unsafe? Today, the node.js `Buffer` constructor is overloaded to handle many different argument types like `String`, `Array`, `Object`, `TypedArrayView` (`Uint8Array`, etc.), `ArrayBuffer`, and also `Number`. The API is optimized for convenience: you can throw any type at it, and it will try to do what you want. Because the Buffer constructor is so powerful, you often see code like this: ```js // Convert UTF-8 strings to hex function toHex (str) { return new Buffer(str).toString('hex') } ``` ***But what happens if `toHex` is called with a `Number` argument?*** ### Remote Memory Disclosure If an attacker can make your program call the `Buffer` constructor with a `Number` argument, then they can make it allocate uninitialized memory from the node.js process. This could potentially disclose TLS private keys, user data, or database passwords. When the `Buffer` constructor is passed a `Number` argument, it returns an **UNINITIALIZED** block of memory of the specified `size`. When you create a `Buffer` like this, you **MUST** overwrite the contents before returning it to the user. From the [node.js docs](https://nodejs.org/api/buffer.html#buffer_new_buffer_size): > `new Buffer(size)` > > - `size` Number > > The underlying memory for `Buffer` instances created in this way is not initialized. > **The contents of a newly created `Buffer` are unknown and could contain sensitive > data.** Use `buf.fill(0)` to initialize a Buffer to zeroes. (Emphasis our own.) Whenever the programmer intended to create an uninitialized `Buffer` you often see code like this: ```js var buf = new Buffer(16) // Immediately overwrite the uninitialized buffer with data from another buffer for (var i = 0; i < buf.length; i++) { buf[i] = otherBuf[i] } ``` ### Would this ever be a problem in real code? Yes. It's surprisingly common to forget to check the type of your variables in a dynamically-typed language like JavaScript. Usually the consequences of assuming the wrong type is that your program crashes with an uncaught exception. But the failure mode for forgetting to check the type of arguments to the `Buffer` constructor is more catastrophic. Here's an example of a vulnerable service that takes a JSON payload and converts it to hex: ```js // Take a JSON payload {str: "some string"} and convert it to hex var server = http.createServer(function (req, res) { var data = '' req.setEncoding('utf8') req.on('data', function (chunk) { data += chunk }) req.on('end', function () { var body = JSON.parse(data) res.end(new Buffer(body.str).toString('hex')) }) }) server.listen(8080) ``` In this example, an http client just has to send: ```json { "str": 1000 } ``` and it will get back 1,000 bytes of uninitialized memory from the server. This is a very serious bug. It's similar in severity to the [the Heartbleed bug](http://heartbleed.com/) that allowed disclosure of OpenSSL process memory by remote attackers. ### Which real-world packages were vulnerable? #### [`bittorrent-dht`](https://www.npmjs.com/package/bittorrent-dht) [Mathias Buus](https://github.com/mafintosh) and I ([Feross Aboukhadijeh](http://feross.org/)) found this issue in one of our own packages, [`bittorrent-dht`](https://www.npmjs.com/package/bittorrent-dht). The bug would allow anyone on the internet to send a series of messages to a user of `bittorrent-dht` and get them to reveal 20 bytes at a time of uninitialized memory from the node.js process. Here's [the commit](https://github.com/feross/bittorrent-dht/commit/6c7da04025d5633699800a99ec3fbadf70ad35b8) that fixed it. We released a new fixed version, created a [Node Security Project disclosure](https://nodesecurity.io/advisories/68), and deprecated all vulnerable versions on npm so users will get a warning to upgrade to a newer version. #### [`ws`](https://www.npmjs.com/package/ws) That got us wondering if there were other vulnerable packages. Sure enough, within a short period of time, we found the same issue in [`ws`](https://www.npmjs.com/package/ws), the most popular WebSocket implementation in node.js. If certain APIs were called with `Number` parameters instead of `String` or `Buffer` as expected, then uninitialized server memory would be disclosed to the remote peer. These were the vulnerable methods: ```js socket.send(number) socket.ping(number) socket.pong(number) ``` Here's a vulnerable socket server with some echo functionality: ```js server.on('connection', function (socket) { socket.on('message', function (message) { message = JSON.parse(message) if (message.type === 'echo') { socket.send(message.data) // send back the user's message } }) }) ``` `socket.send(number)` called on the server, will disclose server memory. Here's [the release](https://github.com/websockets/ws/releases/tag/1.0.1) where the issue was fixed, with a more detailed explanation. Props to [Arnout Kazemier](https://github.com/3rd-Eden) for the quick fix. Here's the [Node Security Project disclosure](https://nodesecurity.io/advisories/67). ### What's the solution? It's important that node.js offers a fast way to get memory otherwise performance-critical applications would needlessly get a lot slower. But we need a better way to *signal our intent* as programmers. **When we want uninitialized memory, we should request it explicitly.** Sensitive functionality should not be packed into a developer-friendly API that loosely accepts many different types. This type of API encourages the lazy practice of passing variables in without checking the type very carefully. #### A new API: `Buffer.allocUnsafe(number)` The functionality of creating buffers with uninitialized memory should be part of another API. We propose `Buffer.allocUnsafe(number)`. This way, it's not part of an API that frequently gets user input of all sorts of different types passed into it. ```js var buf = Buffer.allocUnsafe(16) // careful, uninitialized memory! // Immediately overwrite the uninitialized buffer with data from another buffer for (var i = 0; i < buf.length; i++) { buf[i] = otherBuf[i] } ``` ### How do we fix node.js core? We sent [a PR to node.js core](https://github.com/nodejs/node/pull/4514) (merged as `semver-major`) which defends against one case: ```js var str = 16 new Buffer(str, 'utf8') ``` In this situation, it's implied that the programmer intended the first argument to be a string, since they passed an encoding as a second argument. Today, node.js will allocate uninitialized memory in the case of `new Buffer(number, encoding)`, which is probably not what the programmer intended. But this is only a partial solution, since if the programmer does `new Buffer(variable)` (without an `encoding` parameter) there's no way to know what they intended. If `variable` is sometimes a number, then uninitialized memory will sometimes be returned. ### What's the real long-term fix? We could deprecate and remove `new Buffer(number)` and use `Buffer.allocUnsafe(number)` when we need uninitialized memory. But that would break 1000s of packages. ~~We believe the best solution is to:~~ ~~1. Change `new Buffer(number)` to return safe, zeroed-out memory~~ ~~2. Create a new API for creating uninitialized Buffers. We propose: `Buffer.allocUnsafe(number)`~~ #### Update We now support adding three new APIs: - `Buffer.from(value)` - convert from any type to a buffer - `Buffer.alloc(size)` - create a zero-filled buffer - `Buffer.allocUnsafe(size)` - create an uninitialized buffer with given size This solves the core problem that affected `ws` and `bittorrent-dht` which is `Buffer(variable)` getting tricked into taking a number argument. This way, existing code continues working and the impact on the npm ecosystem will be minimal. Over time, npm maintainers can migrate performance-critical code to use `Buffer.allocUnsafe(number)` instead of `new Buffer(number)`. ### Conclusion We think there's a serious design issue with the `Buffer` API as it exists today. It promotes insecure software by putting high-risk functionality into a convenient API with friendly "developer ergonomics". This wasn't merely a theoretical exercise because we found the issue in some of the most popular npm packages. Fortunately, there's an easy fix that can be applied today. Use `safe-buffer` in place of `buffer`. ```js var Buffer = require('safe-buffer').Buffer ``` Eventually, we hope that node.js core can switch to this new, safer behavior. We believe the impact on the ecosystem would be minimal since it's not a breaking change. Well-maintained, popular packages would be updated to use `Buffer.alloc` quickly, while older, insecure packages would magically become safe from this attack vector. ## links - [Node.js PR: buffer: throw if both length and enc are passed](https://github.com/nodejs/node/pull/4514) - [Node Security Project disclosure for `ws`](https://nodesecurity.io/advisories/67) - [Node Security Project disclosure for`bittorrent-dht`](https://nodesecurity.io/advisories/68) ## credit The original issues in `bittorrent-dht` ([disclosure](https://nodesecurity.io/advisories/68)) and `ws` ([disclosure](https://nodesecurity.io/advisories/67)) were discovered by [Mathias Buus](https://github.com/mafintosh) and [Feross Aboukhadijeh](http://feross.org/). Thanks to [Adam Baldwin](https://github.com/evilpacket) for helping disclose these issues and for his work running the [Node Security Project](https://nodesecurity.io/). Thanks to [John Hiesey](https://github.com/jhiesey) for proofreading this README and auditing the code. ## license MIT. Copyright (C) [Feross Aboukhadijeh](http://feross.org) # assemblyscript-regex A regex engine for AssemblyScript. [AssemblyScript](https://www.assemblyscript.org/) is a new language, based on TypeScript, that runs on WebAssembly. AssemblyScript has a lightweight standard library, but lacks support for Regular Expression. The project fills that gap! This project exposes an API that mirrors the JavaScript [RegExp](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp) class: ```javascript const regex = new RegExp("fo*", "g"); const str = "table football, foul"; let match: Match | null = regex.exec(str); while (match != null) { // first iteration // match.index = 6 // match.matches[0] = "foo" // second iteration // match.index = 16 // match.matches[0] = "fo" match = regex.exec(str); } ``` ## Project status The initial focus of this implementation has been feature support and functionality over performance. It currently supports a sufficient number of regex features to be considered useful, including most character classes, common assertions, groups, alternations, capturing groups and quantifiers. The next phase of development will focussed on more extensive testing and performance. The project currently has reasonable unit test coverage, focussed on positive and negative test cases on a per-feature basis. It also includes a more exhaustive test suite with test cases borrowed from another regex library. ### Feature support Based on the classfication within the [MDN cheatsheet](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions/Cheatsheet) **Character sets** - [x] . - [x] \d - [x] \D - [x] \w - [x] \W - [x] \s - [x] \S - [x] \t - [x] \r - [x] \n - [x] \v - [x] \f - [ ] [\b] - [ ] \0 - [ ] \cX - [x] \xhh - [x] \uhhhh - [ ] \u{hhhh} or \u{hhhhh} - [x] \ **Assertions** - [x] ^ - [x] $ - [ ] \b - [ ] \B **Other assertions** - [ ] x(?=y) Lookahead assertion - [ ] x(?!y) Negative lookahead assertion - [ ] (?<=y)x Lookbehind assertion - [ ] (?<!y)x Negative lookbehind assertion **Groups and ranges** - [x] x|y - [x] [xyz][a-c] - [x] [^xyz][^a-c] - [x] (x) capturing group - [ ] \n back reference - [ ] (?<Name>x) named capturing group - [x] (?:x) Non-capturing group **Quantifiers** - [x] x\* - [x] x+ - [x] x? - [x] x{n} - [x] x{n,} - [x] x{n,m} - [ ] x\*? / x+? / ... **RegExp** - [x] global - [ ] sticky - [x] case insensitive - [x] multiline - [x] dotAll - [ ] unicode ### Development This project is open source, MIT licenced and your contributions are very much welcomed. To get started, check out the repository and install dependencies: ``` $ npm install ``` A few general points about the tools and processes this project uses: - This project uses prettier for code formatting and eslint to provide additional syntactic checks. These are both run on `npm test` and as part of the CI build. - The unit tests are executed using [as-pect](https://github.com/jtenner/as-pect) - a native AssemblyScript test runner - The specification tests are within the `spec` folder. The `npm run test:generate` target transforms these tests into as-pect tests which execute as part of the standard build / test cycle - In order to support improved debugging you can execute this library as TypeScript (rather than WebAssembly), via the `npm run tsrun` target. # lru-cache A cache object that deletes the least-recently-used items. Specify a max number of the most recently used items that you want to keep, and this cache will keep that many of the most recently accessed items. This is not primarily a TTL cache, and does not make strong TTL guarantees. There is no preemptive pruning of expired items by default, but you _may_ set a TTL on the cache or on a single `set`. If you do so, it will treat expired items as missing, and delete them when fetched. If you are more interested in TTL caching than LRU caching, check out [@isaacs/ttlcache](http://npm.im/@isaacs/ttlcache). As of version 7, this is one of the most performant LRU implementations available in JavaScript, and supports a wide diversity of use cases. However, note that using some of the features will necessarily impact performance, by causing the cache to have to do more work. See the "Performance" section below. ## Installation ```bash npm install lru-cache --save ``` ## Usage ```js const LRU = require('lru-cache') // At least one of 'max', 'ttl', or 'maxSize' is required, to prevent // unsafe unbounded storage. // In most cases, it's best to specify a max for performance, so all // the required memory allocation is done up-front. const options = { // the number of most recently used items to keep. // note that we may store fewer items than this if maxSize is hit. max: 500, // <-- Technically optional, but see "Storage Bounds Safety" below // if you wish to track item size, you must provide a maxSize // note that we still will only keep up to max *actual items*, // so size tracking may cause fewer than max items to be stored. // At the extreme, a single item of maxSize size will cause everything // else in the cache to be dropped when it is added. Use with caution! // Note also that size tracking can negatively impact performance, // though for most cases, only minimally. maxSize: 5000, // function to calculate size of items. useful if storing strings or // buffers or other items where memory size depends on the object itself. // also note that oversized items do NOT immediately get dropped from // the cache, though they will cause faster turnover in the storage. sizeCalculation: (value, key) => { // return an positive integer which is the size of the item, // if a positive integer is not returned, will use 0 as the size. return 1 }, // function to call when the item is removed from the cache // Note that using this can negatively impact performance. dispose: (value, key) => { freeFromMemoryOrWhatever(value) }, // max time to live for items before they are considered stale // note that stale items are NOT preemptively removed by default, // and MAY live in the cache, contributing to its LRU max, long after // they have expired. // Also, as this cache is optimized for LRU/MRU operations, some of // the staleness/TTL checks will reduce performance, as they will incur // overhead by deleting items. // Must be a positive integer in ms, defaults to 0, which means "no TTL" ttl: 1000 * 60 * 5, // return stale items from cache.get() before disposing of them // boolean, default false allowStale: false, // update the age of items on cache.get(), renewing their TTL // boolean, default false updateAgeOnGet: false, // update the age of items on cache.has(), renewing their TTL // boolean, default false updateAgeOnHas: false, } const cache = new LRU(options) cache.set("key", "value") cache.get("key") // "value" // non-string keys ARE fully supported // but note that it must be THE SAME object, not // just a JSON-equivalent object. var someObject = { a: 1 } cache.set(someObject, 'a value') // Object keys are not toString()-ed cache.set('[object Object]', 'a different value') assert.equal(cache.get(someObject), 'a value') // A similar object with same keys/values won't work, // because it's a different object identity assert.equal(cache.get({ a: 1 }), undefined) cache.clear() // empty the cache ``` If you put more stuff in it, then items will fall out. ## Options * `max` - The maximum number (or size) of items that remain in the cache (assuming no TTL pruning or explicit deletions). Note that fewer items may be stored if size calculation is used, and `maxSize` is exceeded. This must be a positive finite intger. At least one of `max`, `maxSize`, or `TTL` is required. This must be a positive integer if set. **It is strongly recommended to set a `max` to prevent unbounded growth of the cache.** See "Storage Bounds Safety" below. * `maxSize` - Set to a positive integer to track the sizes of items added to the cache, and automatically evict items in order to stay below this size. Note that this may result in fewer than `max` items being stored. Optional, must be a positive integer if provided. Required if other size tracking features are used. At least one of `max`, `maxSize`, or `TTL` is required. This must be a positive integer if set. Even if size tracking is enabled, **it is strongly recommended to set a `max` to prevent unbounded growth of the cache.** See "Storage Bounds Safety" below. * `sizeCalculation` - Function used to calculate the size of stored items. If you're storing strings or buffers, then you probably want to do something like `n => n.length`. The item is passed as the first argument, and the key is passed as the second argument. This may be overridden by passing an options object to `cache.set()`. Requires `maxSize` to be set. Deprecated alias: `length` * `fetchMethod` Function that is used to make background asynchronous fetches. Called with `fetchMethod(key, staleValue, { signal, options })`. May return a Promise. If `fetchMethod` is not provided, then `cache.fetch(key)` is equivalent to `Promise.resolve(cache.get(key))`. The `signal` object is an `AbortSignal`. If at any time, `signal.aborted` is set to `true`, then that means that the fetch should be abandoned. This may be passed along to async functions aware of AbortController/AbortSignal behavior. The `options` object is a union of the options that may be provided to `set()` and `get()`. If they are modified, then that will result in modifying the settings to `cache.set()` when the value is resolved. For example, a DNS cache may update the TTL based on the value returned from a remote DNS server by changing `options.ttl` in the `fetchMethod`. * `dispose` Function that is called on items when they are dropped from the cache, as `this.dispose(value, key, reason)`. This can be handy if you want to close file descriptors or do other cleanup tasks when items are no longer stored in the cache. **NOTE**: It is called *before* the item has been fully removed from the cache, so if you want to put it right back in, you need to wait until the next tick. If you try to add it back in during the `dispose()` function call, it will break things in subtle and weird ways. Unlike several other options, this may _not_ be overridden by passing an option to `set()`, for performance reasons. If disposal functions may vary between cache entries, then the entire list must be scanned on every cache swap, even if no disposal function is in use. The `reason` will be one of the following strings, corresponding to the reason for the item's deletion: * `evict` Item was evicted to make space for a new addition * `set` Item was overwritten by a new value * `delete` Item was removed by explicit `cache.delete(key)` or by calling `cache.clear()`, which deletes everything. The `dispose()` method is _not_ called for canceled calls to `fetchMethod()`. If you wish to handle evictions, overwrites, and deletes of in-flight asynchronous fetches, you must use the `AbortSignal` provided. Optional, must be a function. * `disposeAfter` The same as `dispose`, but called _after_ the entry is completely removed and the cache is once again in a clean state. It is safe to add an item right back into the cache at this point. However, note that it is _very_ easy to inadvertently create infinite recursion in this way. The `disposeAfter()` method is _not_ called for canceled calls to `fetchMethod()`. If you wish to handle evictions, overwrites, and deletes of in-flight asynchronous fetches, you must use the `AbortSignal` provided. * `noDisposeOnSet` Set to `true` to suppress calling the `dispose()` function if the entry key is still accessible within the cache. This may be overridden by passing an options object to `cache.set()`. Boolean, default `false`. Only relevant if `dispose` or `disposeAfter` options are set. * `ttl` - max time to live for items before they are considered stale. Note that stale items are NOT preemptively removed by default, and MAY live in the cache, contributing to its LRU max, long after they have expired. Also, as this cache is optimized for LRU/MRU operations, some of the staleness/TTL checks will reduce performance, as they will incur overhead by deleting from Map objects rather than simply throwing old Map objects away. This is not primarily a TTL cache, and does not make strong TTL guarantees. There is no pre-emptive pruning of expired items, but you _may_ set a TTL on the cache, and it will treat expired items as missing when they are fetched, and delete them. Optional, but must be a positive integer in ms if specified. This may be overridden by passing an options object to `cache.set()`. At least one of `max`, `maxSize`, or `TTL` is required. This must be a positive integer if set. Even if ttl tracking is enabled, **it is strongly recommended to set a `max` to prevent unbounded growth of the cache.** See "Storage Bounds Safety" below. If ttl tracking is enabled, and `max` and `maxSize` are not set, and `ttlAutopurge` is not set, then a warning will be emitted cautioning about the potential for unbounded memory consumption. Deprecated alias: `maxAge` * `noUpdateTTL` - Boolean flag to tell the cache to not update the TTL when setting a new value for an existing key (ie, when updating a value rather than inserting a new value). Note that the TTL value is _always_ set (if provided) when adding a new entry into the cache. This may be passed as an option to `cache.set()`. Boolean, default false. * `ttlResolution` - Minimum amount of time in ms in which to check for staleness. Defaults to `1`, which means that the current time is checked at most once per millisecond. Set to `0` to check the current time every time staleness is tested. Note that setting this to a higher value _will_ improve performance somewhat while using ttl tracking, albeit at the expense of keeping stale items around a bit longer than intended. * `ttlAutopurge` - Preemptively remove stale items from the cache. Note that this may _significantly_ degrade performance, especially if the cache is storing a large number of items. It is almost always best to just leave the stale items in the cache, and let them fall out as new items are added. Note that this means that `allowStale` is a bit pointless, as stale items will be deleted almost as soon as they expire. Use with caution! Boolean, default `false` * `allowStale` - By default, if you set `ttl`, it'll only delete stale items from the cache when you `get(key)`. That is, it's not preemptively pruning items. If you set `allowStale:true`, it'll return the stale value as well as deleting it. If you don't set this, then it'll return `undefined` when you try to get a stale entry. Note that when a stale entry is fetched, _even if it is returned due to `allowStale` being set_, it is removed from the cache immediately. You can immediately put it back in the cache if you wish, thus resetting the TTL. This may be overridden by passing an options object to `cache.get()`. The `cache.has()` method will always return `false` for stale items. Boolean, default false, only relevant if `ttl` is set. Deprecated alias: `stale` * `updateAgeOnGet` - When using time-expiring entries with `ttl`, setting this to `true` will make each item's age reset to 0 whenever it is retrieved from cache with `get()`, causing it to not expire. (It can still fall out of cache based on recency of use, of course.) This may be overridden by passing an options object to `cache.get()`. Boolean, default false, only relevant if `ttl` is set. * `updateAgeOnHas` - When using time-expiring entries with `ttl`, setting this to `true` will make each item's age reset to 0 whenever its presence in the cache is checked with `has()`, causing it to not expire. (It can still fall out of cache based on recency of use, of course.) This may be overridden by passing an options object to `cache.has()`. Boolean, default false, only relevant if `ttl` is set. ## API * `new LRUCache(options)` Create a new LRUCache. All options are documented above, and are on the cache as public members. * `cache.max`, `cache.maxSize`, `cache.allowStale`, `cache.noDisposeOnSet`, `cache.sizeCalculation`, `cache.dispose`, `cache.maxSize`, `cache.ttl`, `cache.updateAgeOnGet`, `cache.updateAgeOnHas` All option names are exposed as public members on the cache object. These are intended for read access only. Changing them during program operation can cause undefined behavior. * `cache.size` The total number of items held in the cache at the current moment. * `cache.calculatedSize` The total size of items in cache when using size tracking. * `set(key, value, [{ size, sizeCalculation, ttl, noDisposeOnSet }])` Add a value to the cache. Optional options object may contain `ttl` and `sizeCalculation` as described above, which default to the settings on the cache object. Options object my also include `size`, which will prevent calling the `sizeCalculation` function and just use the specified number if it is a positive integer, and `noDisposeOnSet` which will prevent calling a `dispose` function in the case of overwrites. Will update the recency of the entry. Returns the cache object. * `get(key, { updateAgeOnGet, allowStale } = {}) => value` Return a value from the cache. Will update the recency of the cache entry found. If the key is not found, `get()` will return `undefined`. This can be confusing when setting values specifically to `undefined`, as in `cache.set(key, undefined)`. Use `cache.has()` to determine whether a key is present in the cache at all. * `async fetch(key, { updateAgeOnGet, allowStale, size, sizeCalculation, ttl, noDisposeOnSet } = {}) => Promise` If the value is in the cache and not stale, then the returned Promise resolves to the value. If not in the cache, or beyond its TTL staleness, then `fetchMethod(key, staleValue, options)` is called, and the value returned will be added to the cache once resolved. If called with `allowStale`, and an asynchronous fetch is currently in progress to reload a stale value, then the former stale value will be returned. Multiple fetches for the same `key` will only call `fetchMethod` a single time, and all will be resolved when the value is resolved, even if different options are used. If `fetchMethod` is not specified, then this is effectively an alias for `Promise.resolve(cache.get(key))`. When the fetch method resolves to a value, if the fetch has not been aborted due to deletion, eviction, or being overwritten, then it is added to the cache using the options provided. * `peek(key, { allowStale } = {}) => value` Like `get()` but doesn't update recency or delete stale items. Returns `undefined` if the item is stale, unless `allowStale` is set either on the cache or in the options object. * `has(key, { updateAgeOnHas } = {}) => Boolean` Check if a key is in the cache, without updating the recency of use. Age is updated if `updateAgeOnHas` is set to `true` in either the options or the constructor. Will return `false` if the item is stale, even though it is technically in the cache. * `delete(key)` Deletes a key out of the cache. Returns `true` if the key was deleted, `false` otherwise. * `clear()` Clear the cache entirely, throwing away all values. Deprecated alias: `reset()` * `keys()` Return a generator yielding the keys in the cache, in order from most recently used to least recently used. * `rkeys()` Return a generator yielding the keys in the cache, in order from least recently used to most recently used. * `values()` Return a generator yielding the values in the cache, in order from most recently used to least recently used. * `rvalues()` Return a generator yielding the values in the cache, in order from least recently used to most recently used. * `entries()` Return a generator yielding `[key, value]` pairs, in order from most recently used to least recently used. * `rentries()` Return a generator yielding `[key, value]` pairs, in order from least recently used to most recently used. * `find(fn, [getOptions])` Find a value for which the supplied `fn` method returns a truthy value, similar to `Array.find()`. `fn` is called as `fn(value, key, cache)`. The optional `getOptions` are applied to the resulting `get()` of the item found. * `dump()` Return an array of `[key, entry]` objects which can be passed to `cache.load()` Note: this returns an actual array, not a generator, so it can be more easily passed around. * `load(entries)` Reset the cache and load in the items in `entries` in the order listed. Note that the shape of the resulting cache may be different if the same options are not used in both caches. * `purgeStale()` Delete any stale entries. Returns `true` if anything was removed, `false` otherwise. Deprecated alias: `prune` * `getRemainingTTL(key)` Return the number of ms left in the item's TTL. If item is not in cache, returns `0`. Returns `Infinity` if item is in cache without a defined TTL. * `forEach(fn, [thisp])` Call the `fn` function with each set of `fn(value, key, cache)` in the LRU cache, from most recent to least recently used. Does not affect recency of use. If `thisp` is provided, function will be called in the `this`-context of the provided object. * `rforEach(fn, [thisp])` Same as `cache.forEach(fn, thisp)`, but in order from least recently used to most recently used. * `pop()` Evict the least recently used item, returning its value. Returns `undefined` if cache is empty. ### Internal Methods and Properties In order to optimize performance as much as possible, "private" members and methods are exposed on the object as normal properties, rather than being accessed via Symbols, private members, or closure variables. **Do not use or rely on these.** They will change or be removed without notice. They will cause undefined behavior if used inappropriately. There is no need or reason to ever call them directly. This documentation is here so that it is especially clear that this not "undocumented" because someone forgot; it _is_ documented, and the documentation is telling you not to do it. **Do not report bugs that stem from using these properties.** They will be ignored. * `initializeTTLTracking()` Set up the cache for tracking TTLs * `updateItemAge(index)` Called when an item age is updated, by internal ID * `setItemTTL(index)` Called when an item ttl is updated, by internal ID * `isStale(index)` Called to check an item's staleness, by internal ID * `initializeSizeTracking()` Set up the cache for tracking item size. Called automatically when a size is specified. * `removeItemSize(index)` Updates the internal size calculation when an item is removed or modified, by internal ID * `addItemSize(index)` Updates the internal size calculation when an item is added or modified, by internal ID * `indexes()` An iterator over the non-stale internal IDs, from most recently to least recently used. * `rindexes()` An iterator over the non-stale internal IDs, from least recently to most recently used. * `newIndex()` Create a new internal ID, either reusing a deleted ID, evicting the least recently used ID, or walking to the end of the allotted space. * `evict()` Evict the least recently used internal ID, returning its ID. Does not do any bounds checking. * `connect(p, n)` Connect the `p` and `n` internal IDs in the linked list. * `moveToTail(index)` Move the specified internal ID to the most recently used position. * `keyMap` Map of keys to internal IDs * `keyList` List of keys by internal ID * `valList` List of values by internal ID * `sizes` List of calculated sizes by internal ID * `ttls` List of TTL values by internal ID * `starts` List of start time values by internal ID * `next` Array of "next" pointers by internal ID * `prev` Array of "previous" pointers by internal ID * `head` Internal ID of least recently used item * `tail` Internal ID of most recently used item * `free` Stack of deleted internal IDs ## Storage Bounds Safety This implementation aims to be as flexible as possible, within the limits of safe memory consumption and optimal performance. At initial object creation, storage is allocated for `max` items. If `max` is set to zero, then some performance is lost, and item count is unbounded. Either `maxSize` or `ttl` _must_ be set if `max` is not specified. If `maxSize` is set, then this creates a safe limit on the maximum storage consumed, but without the performance benefits of pre-allocation. When `maxSize` is set, every item _must_ provide a size, either via the `sizeCalculation` method provided to the constructor, or via a `size` or `sizeCalculation` option provided to `cache.set()`. The size of every item _must_ be a positive integer. If neither `max` nor `maxSize` are set, then `ttl` tracking must be enabled. Note that, even when tracking item `ttl`, items are _not_ preemptively deleted when they become stale, unless `ttlAutopurge` is enabled. Instead, they are only purged the next time the key is requested. Thus, if `ttlAutopurge`, `max`, and `maxSize` are all not set, then the cache will potentially grow unbounded. In this case, a warning is printed to standard error. Future versions may require the use of `ttlAutopurge` if `max` and `maxSize` are not specified. If you truly wish to use a cache that is bound _only_ by TTL expiration, consider using a `Map` object, and calling `setTimeout` to delete entries when they expire. It will perform much better than an LRU cache. Here is an implementation you may use, under the same [license](./LICENSE) as this package: ```js // a storage-unbounded ttl cache that is not an lru-cache const cache = { data: new Map(), timers: new Map(), set: (k, v, ttl) => { if (cache.timers.has(k)) { clearTimeout(cache.timers.get(k)) } cache.timers.set(k, setTimeout(() => cache.del(k), ttl)) cache.data.set(k, v) }, get: k => cache.data.get(k), has: k => cache.data.has(k), delete: k => { if (cache.timers.has(k)) { clearTimeout(cache.timers.get(k)) } cache.timers.delete(k) return cache.data.delete(k) }, clear: () => { cache.data.clear() for (const v of cache.timers.values()) { clearTimeout(v) } cache.timers.clear() } } ``` ## Performance As of January 2022, version 7 of this library is one of the most performant LRU cache implementations in JavaScript. Benchmarks can be extremely difficult to get right. In particular, the performance of set/get/delete operations on objects will vary _wildly_ depending on the type of key used. V8 is highly optimized for objects with keys that are short strings, especially integer numeric strings. Thus any benchmark which tests _solely_ using numbers as keys will tend to find that an object-based approach performs the best. Note that coercing _anything_ to strings to use as object keys is unsafe, unless you can be 100% certain that no other type of value will be used. For example: ```js const myCache = {} const set = (k, v) => myCache[k] = v const get = (k) => myCache[k] set({}, 'please hang onto this for me') set('[object Object]', 'oopsie') ``` Also beware of "Just So" stories regarding performance. Garbage collection of large (especially: deep) object graphs can be incredibly costly, with several "tipping points" where it increases exponentially. As a result, putting that off until later can make it much worse, and less predictable. If a library performs well, but only in a scenario where the object graph is kept shallow, then that won't help you if you are using large objects as keys. In general, when attempting to use a library to improve performance (such as a cache like this one), it's best to choose an option that will perform well in the sorts of scenarios where you'll actually use it. This library is optimized for repeated gets and minimizing eviction time, since that is the expected need of a LRU. Set operations are somewhat slower on average than a few other options, in part because of that optimization. It is assumed that you'll be caching some costly operation, ideally as rarely as possible, so optimizing set over get would be unwise. If performance matters to you: 1. If it's at all possible to use small integer values as keys, and you can guarantee that no other types of values will be used as keys, then do that, and use a cache such as [lru-fast](https://npmjs.com/package/lru-fast), or [mnemonist's LRUCache](https://yomguithereal.github.io/mnemonist/lru-cache) which uses an Object as its data store. 2. Failing that, if at all possible, use short non-numeric strings (ie, less than 256 characters) as your keys, and use [mnemonist's LRUCache](https://yomguithereal.github.io/mnemonist/lru-cache). 3. If the types of your keys will be long strings, strings that look like floats, `null`, objects, or some mix of types, or if you aren't sure, then this library will work well for you. 4. Do not use a `dispose` function, size tracking, or especially ttl behavior, unless absolutely needed. These features are convenient, and necessary in some use cases, and every attempt has been made to make the performance impact minimal, but it isn't nothing. ## Breaking Changes in Version 7 This library changed to a different algorithm and internal data structure in version 7, yielding significantly better performance, albeit with some subtle changes as a result. If you were relying on the internals of LRUCache in version 6 or before, it probably will not work in version 7 and above. For more info, see the [change log](CHANGELOG.md). # yargs-parser  [](https://www.npmjs.com/package/yargs-parser) [](https://conventionalcommits.org)  The mighty option parser used by [yargs](https://github.com/yargs/yargs). visit the [yargs website](http://yargs.js.org/) for more examples, and thorough usage instructions. <img width="250" src="https://raw.githubusercontent.com/yargs/yargs-parser/main/yargs-logo.png"> ## Example ```sh npm i yargs-parser --save ``` ```js const argv = require('yargs-parser')(process.argv.slice(2)) console.log(argv) ``` ```console $ node example.js --foo=33 --bar hello { _: [], foo: 33, bar: 'hello' } ``` _or parse a string!_ ```js const argv = require('yargs-parser')('--foo=99 --bar=33') console.log(argv) ``` ```console { _: [], foo: 99, bar: 33 } ``` Convert an array of mixed types before passing to `yargs-parser`: ```js const parse = require('yargs-parser') parse(['-f', 11, '--zoom', 55].join(' ')) // <-- array to string parse(['-f', 11, '--zoom', 55].map(String)) // <-- array of strings ``` ## Deno Example As of `v19` `yargs-parser` supports [Deno](https://github.com/denoland/deno): ```typescript import parser from "https://deno.land/x/yargs_parser/deno.ts"; const argv = parser('--foo=99 --bar=9987930', { string: ['bar'] }) console.log(argv) ``` ## ESM Example As of `v19` `yargs-parser` supports ESM (_both in Node.js and in the browser_): **Node.js:** ```js import parser from 'yargs-parser' const argv = parser('--foo=99 --bar=9987930', { string: ['bar'] }) console.log(argv) ``` **Browsers:** ```html <!doctype html> <body> <script type="module"> import parser from "https://unpkg.com/yargs-parser@19.0.0/browser.js"; const argv = parser('--foo=99 --bar=9987930', { string: ['bar'] }) console.log(argv) </script> </body> ``` ## API ### parser(args, opts={}) Parses command line arguments returning a simple mapping of keys and values. **expects:** * `args`: a string or array of strings representing the options to parse. * `opts`: provide a set of hints indicating how `args` should be parsed: * `opts.alias`: an object representing the set of aliases for a key: `{alias: {foo: ['f']}}`. * `opts.array`: indicate that keys should be parsed as an array: `{array: ['foo', 'bar']}`.<br> Indicate that keys should be parsed as an array and coerced to booleans / numbers:<br> `{array: [{ key: 'foo', boolean: true }, {key: 'bar', number: true}]}`. * `opts.boolean`: arguments should be parsed as booleans: `{boolean: ['x', 'y']}`. * `opts.coerce`: provide a custom synchronous function that returns a coerced value from the argument provided (or throws an error). For arrays the function is called only once for the entire array:<br> `{coerce: {foo: function (arg) {return modifiedArg}}}`. * `opts.config`: indicate a key that represents a path to a configuration file (this file will be loaded and parsed). * `opts.configObjects`: configuration objects to parse, their properties will be set as arguments:<br> `{configObjects: [{'x': 5, 'y': 33}, {'z': 44}]}`. * `opts.configuration`: provide configuration options to the yargs-parser (see: [configuration](#configuration)). * `opts.count`: indicate a key that should be used as a counter, e.g., `-vvv` = `{v: 3}`. * `opts.default`: provide default values for keys: `{default: {x: 33, y: 'hello world!'}}`. * `opts.envPrefix`: environment variables (`process.env`) with the prefix provided should be parsed. * `opts.narg`: specify that a key requires `n` arguments: `{narg: {x: 2}}`. * `opts.normalize`: `path.normalize()` will be applied to values set to this key. * `opts.number`: keys should be treated as numbers. * `opts.string`: keys should be treated as strings (even if they resemble a number `-x 33`). **returns:** * `obj`: an object representing the parsed value of `args` * `key/value`: key value pairs for each argument and their aliases. * `_`: an array representing the positional arguments. * [optional] `--`: an array with arguments after the end-of-options flag `--`. ### require('yargs-parser').detailed(args, opts={}) Parses a command line string, returning detailed information required by the yargs engine. **expects:** * `args`: a string or array of strings representing options to parse. * `opts`: provide a set of hints indicating how `args`, inputs are identical to `require('yargs-parser')(args, opts={})`. **returns:** * `argv`: an object representing the parsed value of `args` * `key/value`: key value pairs for each argument and their aliases. * `_`: an array representing the positional arguments. * [optional] `--`: an array with arguments after the end-of-options flag `--`. * `error`: populated with an error object if an exception occurred during parsing. * `aliases`: the inferred list of aliases built by combining lists in `opts.alias`. * `newAliases`: any new aliases added via camel-case expansion: * `boolean`: `{ fooBar: true }` * `defaulted`: any new argument created by `opts.default`, no aliases included. * `boolean`: `{ foo: true }` * `configuration`: given by default settings and `opts.configuration`. <a name="configuration"></a> ### Configuration The yargs-parser applies several automated transformations on the keys provided in `args`. These features can be turned on and off using the `configuration` field of `opts`. ```js var parsed = parser(['--no-dice'], { configuration: { 'boolean-negation': false } }) ``` ### short option groups * default: `true`. * key: `short-option-groups`. Should a group of short-options be treated as boolean flags? ```console $ node example.js -abc { _: [], a: true, b: true, c: true } ``` _if disabled:_ ```console $ node example.js -abc { _: [], abc: true } ``` ### camel-case expansion * default: `true`. * key: `camel-case-expansion`. Should hyphenated arguments be expanded into camel-case aliases? ```console $ node example.js --foo-bar { _: [], 'foo-bar': true, fooBar: true } ``` _if disabled:_ ```console $ node example.js --foo-bar { _: [], 'foo-bar': true } ``` ### dot-notation * default: `true` * key: `dot-notation` Should keys that contain `.` be treated as objects? ```console $ node example.js --foo.bar { _: [], foo: { bar: true } } ``` _if disabled:_ ```console $ node example.js --foo.bar { _: [], "foo.bar": true } ``` ### parse numbers * default: `true` * key: `parse-numbers` Should keys that look like numbers be treated as such? ```console $ node example.js --foo=99.3 { _: [], foo: 99.3 } ``` _if disabled:_ ```console $ node example.js --foo=99.3 { _: [], foo: "99.3" } ``` ### parse positional numbers * default: `true` * key: `parse-positional-numbers` Should positional keys that look like numbers be treated as such. ```console $ node example.js 99.3 { _: [99.3] } ``` _if disabled:_ ```console $ node example.js 99.3 { _: ['99.3'] } ``` ### boolean negation * default: `true` * key: `boolean-negation` Should variables prefixed with `--no` be treated as negations? ```console $ node example.js --no-foo { _: [], foo: false } ``` _if disabled:_ ```console $ node example.js --no-foo { _: [], "no-foo": true } ``` ### combine arrays * default: `false` * key: `combine-arrays` Should arrays be combined when provided by both command line arguments and a configuration file. ### duplicate arguments array * default: `true` * key: `duplicate-arguments-array` Should arguments be coerced into an array when duplicated: ```console $ node example.js -x 1 -x 2 { _: [], x: [1, 2] } ``` _if disabled:_ ```console $ node example.js -x 1 -x 2 { _: [], x: 2 } ``` ### flatten duplicate arrays * default: `true` * key: `flatten-duplicate-arrays` Should array arguments be coerced into a single array when duplicated: ```console $ node example.js -x 1 2 -x 3 4 { _: [], x: [1, 2, 3, 4] } ``` _if disabled:_ ```console $ node example.js -x 1 2 -x 3 4 { _: [], x: [[1, 2], [3, 4]] } ``` ### greedy arrays * default: `true` * key: `greedy-arrays` Should arrays consume more than one positional argument following their flag. ```console $ node example --arr 1 2 { _: [], arr: [1, 2] } ``` _if disabled:_ ```console $ node example --arr 1 2 { _: [2], arr: [1] } ``` **Note: in `v18.0.0` we are considering defaulting greedy arrays to `false`.** ### nargs eats options * default: `false` * key: `nargs-eats-options` Should nargs consume dash options as well as positional arguments. ### negation prefix * default: `no-` * key: `negation-prefix` The prefix to use for negated boolean variables. ```console $ node example.js --no-foo { _: [], foo: false } ``` _if set to `quux`:_ ```console $ node example.js --quuxfoo { _: [], foo: false } ``` ### populate -- * default: `false`. * key: `populate--` Should unparsed flags be stored in `--` or `_`. _If disabled:_ ```console $ node example.js a -b -- x y { _: [ 'a', 'x', 'y' ], b: true } ``` _If enabled:_ ```console $ node example.js a -b -- x y { _: [ 'a' ], '--': [ 'x', 'y' ], b: true } ``` ### set placeholder key * default: `false`. * key: `set-placeholder-key`. Should a placeholder be added for keys not set via the corresponding CLI argument? _If disabled:_ ```console $ node example.js -a 1 -c 2 { _: [], a: 1, c: 2 } ``` _If enabled:_ ```console $ node example.js -a 1 -c 2 { _: [], a: 1, b: undefined, c: 2 } ``` ### halt at non-option * default: `false`. * key: `halt-at-non-option`. Should parsing stop at the first positional argument? This is similar to how e.g. `ssh` parses its command line. _If disabled:_ ```console $ node example.js -a run b -x y { _: [ 'b' ], a: 'run', x: 'y' } ``` _If enabled:_ ```console $ node example.js -a run b -x y { _: [ 'b', '-x', 'y' ], a: 'run' } ``` ### strip aliased * default: `false` * key: `strip-aliased` Should aliases be removed before returning results? _If disabled:_ ```console $ node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1, 'test-alias': 1, testAlias: 1 } ``` _If enabled:_ ```console $ node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1 } ``` ### strip dashed * default: `false` * key: `strip-dashed` Should dashed keys be removed before returning results? This option has no effect if `camel-case-expansion` is disabled. _If disabled:_ ```console $ node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1 } ``` _If enabled:_ ```console $ node example.js --test-field 1 { _: [], testField: 1 } ``` ### unknown options as args * default: `false` * key: `unknown-options-as-args` Should unknown options be treated like regular arguments? An unknown option is one that is not configured in `opts`. _If disabled_ ```console $ node example.js --unknown-option --known-option 2 --string-option --unknown-option2 { _: [], unknownOption: true, knownOption: 2, stringOption: '', unknownOption2: true } ``` _If enabled_ ```console $ node example.js --unknown-option --known-option 2 --string-option --unknown-option2 { _: ['--unknown-option'], knownOption: 2, stringOption: '--unknown-option2' } ``` ## Supported Node.js Versions Libraries in this ecosystem make a best effort to track [Node.js' release schedule](https://nodejs.org/en/about/releases/). Here's [a post on why we think this is important](https://medium.com/the-node-js-collection/maintainers-should-consider-following-node-js-release-schedule-ab08ed4de71a). ## Special Thanks The yargs project evolves from optimist and minimist. It owes its existence to a lot of James Halliday's hard work. Thanks [substack](https://github.com/substack) **beep** **boop** \o/ ## License ISC [](https://travis-ci.org/isaacs/rimraf) [](https://david-dm.org/isaacs/rimraf) [](https://david-dm.org/isaacs/rimraf#info=devDependencies) The [UNIX command](http://en.wikipedia.org/wiki/Rm_(Unix)) `rm -rf` for node. Install with `npm install rimraf`, or just drop rimraf.js somewhere. ## API `rimraf(f, [opts], callback)` The first parameter will be interpreted as a globbing pattern for files. If you want to disable globbing you can do so with `opts.disableGlob` (defaults to `false`). This might be handy, for instance, if you have filenames that contain globbing wildcard characters. The callback will be called with an error if there is one. Certain errors are handled for you: * Windows: `EBUSY` and `ENOTEMPTY` - rimraf will back off a maximum of `opts.maxBusyTries` times before giving up, adding 100ms of wait between each attempt. The default `maxBusyTries` is 3. * `ENOENT` - If the file doesn't exist, rimraf will return successfully, since your desired outcome is already the case. * `EMFILE` - Since `readdir` requires opening a file descriptor, it's possible to hit `EMFILE` if too many file descriptors are in use. In the sync case, there's nothing to be done for this. But in the async case, rimraf will gradually back off with timeouts up to `opts.emfileWait` ms, which defaults to 1000. ## options * unlink, chmod, stat, lstat, rmdir, readdir, unlinkSync, chmodSync, statSync, lstatSync, rmdirSync, readdirSync In order to use a custom file system library, you can override specific fs functions on the options object. If any of these functions are present on the options object, then the supplied function will be used instead of the default fs method. Sync methods are only relevant for `rimraf.sync()`, of course. For example: ```javascript var myCustomFS = require('some-custom-fs') rimraf('some-thing', myCustomFS, callback) ``` * maxBusyTries If an `EBUSY`, `ENOTEMPTY`, or `EPERM` error code is encountered on Windows systems, then rimraf will retry with a linear backoff wait of 100ms longer on each try. The default maxBusyTries is 3. Only relevant for async usage. * emfileWait If an `EMFILE` error is encountered, then rimraf will retry repeatedly with a linear backoff of 1ms longer on each try, until the timeout counter hits this max. The default limit is 1000. If you repeatedly encounter `EMFILE` errors, then consider using [graceful-fs](http://npm.im/graceful-fs) in your program. Only relevant for async usage. * glob Set to `false` to disable [glob](http://npm.im/glob) pattern matching. Set to an object to pass options to the glob module. The default glob options are `{ nosort: true, silent: true }`. Glob version 6 is used in this module. Relevant for both sync and async usage. * disableGlob Set to any non-falsey value to disable globbing entirely. (Equivalent to setting `glob: false`.) ## rimraf.sync It can remove stuff synchronously, too. But that's not so good. Use the async API. It's better. ## CLI If installed with `npm install rimraf -g` it can be used as a global command `rimraf <path> [<path> ...]` which is useful for cross platform support. ## mkdirp If you need to create a directory recursively, check out [mkdirp](https://github.com/substack/node-mkdirp). # AssemblyScript Loader A convenient loader for [AssemblyScript](https://assemblyscript.org) modules. Demangles module exports to a friendly object structure compatible with TypeScript definitions and provides useful utility to read/write data from/to memory. [Documentation](https://assemblyscript.org/loader.html) # y18n [![NPM version][npm-image]][npm-url] [![js-standard-style][standard-image]][standard-url] [](https://conventionalcommits.org) The bare-bones internationalization library used by yargs. Inspired by [i18n](https://www.npmjs.com/package/i18n). ## Examples _simple string translation:_ ```js const __ = require('y18n')().__; console.log(__('my awesome string %s', 'foo')); ``` output: `my awesome string foo` _using tagged template literals_ ```js const __ = require('y18n')().__; const str = 'foo'; console.log(__`my awesome string ${str}`); ``` output: `my awesome string foo` _pluralization support:_ ```js const __n = require('y18n')().__n; console.log(__n('one fish %s', '%d fishes %s', 2, 'foo')); ``` output: `2 fishes foo` ## Deno Example As of `v5` `y18n` supports [Deno](https://github.com/denoland/deno): ```typescript import y18n from "https://deno.land/x/y18n/deno.ts"; const __ = y18n({ locale: 'pirate', directory: './test/locales' }).__ console.info(__`Hi, ${'Ben'} ${'Coe'}!`) ``` You will need to run with `--allow-read` to load alternative locales. ## JSON Language Files The JSON language files should be stored in a `./locales` folder. File names correspond to locales, e.g., `en.json`, `pirate.json`. When strings are observed for the first time they will be added to the JSON file corresponding to the current locale. ## Methods ### require('y18n')(config) Create an instance of y18n with the config provided, options include: * `directory`: the locale directory, default `./locales`. * `updateFiles`: should newly observed strings be updated in file, default `true`. * `locale`: what locale should be used. * `fallbackToLanguage`: should fallback to a language-only file (e.g. `en.json`) be allowed if a file matching the locale does not exist (e.g. `en_US.json`), default `true`. ### y18n.\_\_(str, arg, arg, arg) Print a localized string, `%s` will be replaced with `arg`s. This function can also be used as a tag for a template literal. You can use it like this: <code>__&#96;hello ${'world'}&#96;</code>. This will be equivalent to `__('hello %s', 'world')`. ### y18n.\_\_n(singularString, pluralString, count, arg, arg, arg) Print a localized string with appropriate pluralization. If `%d` is provided in the string, the `count` will replace this placeholder. ### y18n.setLocale(str) Set the current locale being used. ### y18n.getLocale() What locale is currently being used? ### y18n.updateLocale(obj) Update the current locale with the key value pairs in `obj`. ## Supported Node.js Versions Libraries in this ecosystem make a best effort to track [Node.js' release schedule](https://nodejs.org/en/about/releases/). Here's [a post on why we think this is important](https://medium.com/the-node-js-collection/maintainers-should-consider-following-node-js-release-schedule-ab08ed4de71a). ## License ISC [npm-url]: https://npmjs.org/package/y18n [npm-image]: https://img.shields.io/npm/v/y18n.svg [standard-image]: https://img.shields.io/badge/code%20style-standard-brightgreen.svg [standard-url]: https://github.com/feross/standard # get-caller-file [](https://travis-ci.org/stefanpenner/get-caller-file) [](https://ci.appveyor.com/project/embercli/get-caller-file/branch/master) This is a utility, which allows a function to figure out from which file it was invoked. It does so by inspecting v8's stack trace at the time it is invoked. Inspired by http://stackoverflow.com/questions/13227489 *note: this relies on Node/V8 specific APIs, as such other runtimes may not work* ## Installation ```bash yarn add get-caller-file ``` ## Usage Given: ```js // ./foo.js const getCallerFile = require('get-caller-file'); module.exports = function() { return getCallerFile(); // figures out who called it }; ``` ```js // index.js const foo = require('./foo'); foo() // => /full/path/to/this/file/index.js ``` ## Options: * `getCallerFile(position = 2)`: where position is stack frame whos fileName we want. # isobject [](https://www.npmjs.com/package/isobject) [](https://npmjs.org/package/isobject) [](https://travis-ci.org/jonschlinkert/isobject) Returns true if the value is an object and not an array or null. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install isobject --save ``` Use [is-plain-object](https://github.com/jonschlinkert/is-plain-object) if you want only objects that are created by the `Object` constructor. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install isobject ``` Install with [bower](http://bower.io/) ```sh $ bower install isobject ``` ## Usage ```js var isObject = require('isobject'); ``` **True** All of the following return `true`: ```js isObject({}); isObject(Object.create({})); isObject(Object.create(Object.prototype)); isObject(Object.create(null)); isObject({}); isObject(new Foo); isObject(/foo/); ``` **False** All of the following return `false`: ```js isObject(); isObject(function () {}); isObject(1); isObject([]); isObject(undefined); isObject(null); ``` ## Related projects You might also be interested in these projects: [merge-deep](https://www.npmjs.com/package/merge-deep): Recursively merge values in a javascript object. | [homepage](https://github.com/jonschlinkert/merge-deep) * [extend-shallow](https://www.npmjs.com/package/extend-shallow): Extend an object with the properties of additional objects. node.js/javascript util. | [homepage](https://github.com/jonschlinkert/extend-shallow) * [is-plain-object](https://www.npmjs.com/package/is-plain-object): Returns true if an object was created by the `Object` constructor. | [homepage](https://github.com/jonschlinkert/is-plain-object) * [kind-of](https://www.npmjs.com/package/kind-of): Get the native type of a value. | [homepage](https://github.com/jonschlinkert/kind-of) ## Contributing Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](https://github.com/jonschlinkert/isobject/issues/new). ## Building docs Generate readme and API documentation with [verb](https://github.com/verbose/verb): ```sh $ npm install verb && npm run docs ``` Or, if [verb](https://github.com/verbose/verb) is installed globally: ```sh $ verb ``` ## Running tests Install dev dependencies: ```sh $ npm install -d && npm test ``` ## Author **Jon Schlinkert** * [github/jonschlinkert](https://github.com/jonschlinkert) * [twitter/jonschlinkert](http://twitter.com/jonschlinkert) ## License Copyright © 2016, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT license](https://github.com/jonschlinkert/isobject/blob/master/LICENSE). *** _This file was generated by [verb](https://github.com/verbose/verb), v0.9.0, on April 25, 2016._ # function-bind <!-- [![build status][travis-svg]][travis-url] [![NPM version][npm-badge-svg]][npm-url] [![Coverage Status][5]][6] [![gemnasium Dependency Status][7]][8] [![Dependency status][deps-svg]][deps-url] [![Dev Dependency status][dev-deps-svg]][dev-deps-url] --> <!-- [![browser support][11]][12] --> Implementation of function.prototype.bind ## Example I mainly do this for unit tests I run on phantomjs. PhantomJS does not have Function.prototype.bind :( ```js Function.prototype.bind = require("function-bind") ``` ## Installation `npm install function-bind` ## Contributors - Raynos ## MIT Licenced [travis-svg]: https://travis-ci.org/Raynos/function-bind.svg [travis-url]: https://travis-ci.org/Raynos/function-bind [npm-badge-svg]: https://badge.fury.io/js/function-bind.svg [npm-url]: https://npmjs.org/package/function-bind [5]: https://coveralls.io/repos/Raynos/function-bind/badge.png [6]: https://coveralls.io/r/Raynos/function-bind [7]: https://gemnasium.com/Raynos/function-bind.png [8]: https://gemnasium.com/Raynos/function-bind [deps-svg]: https://david-dm.org/Raynos/function-bind.svg [deps-url]: https://david-dm.org/Raynos/function-bind [dev-deps-svg]: https://david-dm.org/Raynos/function-bind/dev-status.svg [dev-deps-url]: https://david-dm.org/Raynos/function-bind#info=devDependencies [11]: https://ci.testling.com/Raynos/function-bind.png [12]: https://ci.testling.com/Raynos/function-bind # wrappy Callback wrapping utility ## USAGE ```javascript var wrappy = require("wrappy") // var wrapper = wrappy(wrapperFunction) // make sure a cb is called only once // See also: http://npm.im/once for this specific use case var once = wrappy(function (cb) { var called = false return function () { if (called) return called = true return cb.apply(this, arguments) } }) function printBoo () { console.log('boo') } // has some rando property printBoo.iAmBooPrinter = true var onlyPrintOnce = once(printBoo) onlyPrintOnce() // prints 'boo' onlyPrintOnce() // does nothing // random property is retained! assert.equal(onlyPrintOnce.iAmBooPrinter, true) ``` semver(1) -- The semantic versioner for npm =========================================== ## Install ```bash npm install semver ```` ## Usage As a node module: ```js const semver = require('semver') semver.valid('1.2.3') // '1.2.3' semver.valid('a.b.c') // null semver.clean(' =v1.2.3 ') // '1.2.3' semver.satisfies('1.2.3', '1.x || >=2.5.0 || 5.0.0 - 7.2.3') // true semver.gt('1.2.3', '9.8.7') // false semver.lt('1.2.3', '9.8.7') // true semver.minVersion('>=1.0.0') // '1.0.0' semver.valid(semver.coerce('v2')) // '2.0.0' semver.valid(semver.coerce('42.6.7.9.3-alpha')) // '42.6.7' ``` You can also just load the module for the function that you care about, if you'd like to minimize your footprint. ```js // load the whole API at once in a single object const semver = require('semver') // or just load the bits you need // all of them listed here, just pick and choose what you want // classes const SemVer = require('semver/classes/semver') const Comparator = require('semver/classes/comparator') const Range = require('semver/classes/range') // functions for working with versions const semverParse = require('semver/functions/parse') const semverValid = require('semver/functions/valid') const semverClean = require('semver/functions/clean') const semverInc = require('semver/functions/inc') const semverDiff = require('semver/functions/diff') const semverMajor = require('semver/functions/major') const semverMinor = require('semver/functions/minor') const semverPatch = require('semver/functions/patch') const semverPrerelease = require('semver/functions/prerelease') const semverCompare = require('semver/functions/compare') const semverRcompare = require('semver/functions/rcompare') const semverCompareLoose = require('semver/functions/compare-loose') const semverCompareBuild = require('semver/functions/compare-build') const semverSort = require('semver/functions/sort') const semverRsort = require('semver/functions/rsort') // low-level comparators between versions const semverGt = require('semver/functions/gt') const semverLt = require('semver/functions/lt') const semverEq = require('semver/functions/eq') const semverNeq = require('semver/functions/neq') const semverGte = require('semver/functions/gte') const semverLte = require('semver/functions/lte') const semverCmp = require('semver/functions/cmp') const semverCoerce = require('semver/functions/coerce') // working with ranges const semverSatisfies = require('semver/functions/satisfies') const semverMaxSatisfying = require('semver/ranges/max-satisfying') const semverMinSatisfying = require('semver/ranges/min-satisfying') const semverToComparators = require('semver/ranges/to-comparators') const semverMinVersion = require('semver/ranges/min-version') const semverValidRange = require('semver/ranges/valid') const semverOutside = require('semver/ranges/outside') const semverGtr = require('semver/ranges/gtr') const semverLtr = require('semver/ranges/ltr') const semverIntersects = require('semver/ranges/intersects') const simplifyRange = require('semver/ranges/simplify') const rangeSubset = require('semver/ranges/subset') ``` As a command-line utility: ``` $ semver -h A JavaScript implementation of the https://semver.org/ specification Copyright Isaac Z. Schlueter Usage: semver [options] <version> [<version> [...]] Prints valid versions sorted by SemVer precedence Options: -r --range <range> Print versions that match the specified range. -i --increment [<level>] Increment a version by the specified level. Level can be one of: major, minor, patch, premajor, preminor, prepatch, or prerelease. Default level is 'patch'. Only one version may be specified. --preid <identifier> Identifier to be used to prefix premajor, preminor, prepatch or prerelease version increments. -l --loose Interpret versions and ranges loosely -p --include-prerelease Always include prerelease versions in range matching -c --coerce Coerce a string into SemVer if possible (does not imply --loose) --rtl Coerce version strings right to left --ltr Coerce version strings left to right (default) Program exits successfully if any valid version satisfies all supplied ranges, and prints all satisfying versions. If no satisfying versions are found, then exits failure. Versions are printed in ascending order, so supplying multiple versions to the utility will just sort them. ``` ## Versions A "version" is described by the `v2.0.0` specification found at <https://semver.org/>. A leading `"="` or `"v"` character is stripped off and ignored. ## Ranges A `version range` is a set of `comparators` which specify versions that satisfy the range. A `comparator` is composed of an `operator` and a `version`. The set of primitive `operators` is: * `<` Less than * `<=` Less than or equal to * `>` Greater than * `>=` Greater than or equal to * `=` Equal. If no operator is specified, then equality is assumed, so this operator is optional, but MAY be included. For example, the comparator `>=1.2.7` would match the versions `1.2.7`, `1.2.8`, `2.5.3`, and `1.3.9`, but not the versions `1.2.6` or `1.1.0`. Comparators can be joined by whitespace to form a `comparator set`, which is satisfied by the **intersection** of all of the comparators it includes. A range is composed of one or more comparator sets, joined by `||`. A version matches a range if and only if every comparator in at least one of the `||`-separated comparator sets is satisfied by the version. For example, the range `>=1.2.7 <1.3.0` would match the versions `1.2.7`, `1.2.8`, and `1.2.99`, but not the versions `1.2.6`, `1.3.0`, or `1.1.0`. The range `1.2.7 || >=1.2.9 <2.0.0` would match the versions `1.2.7`, `1.2.9`, and `1.4.6`, but not the versions `1.2.8` or `2.0.0`. ### Prerelease Tags If a version has a prerelease tag (for example, `1.2.3-alpha.3`) then it will only be allowed to satisfy comparator sets if at least one comparator with the same `[major, minor, patch]` tuple also has a prerelease tag. For example, the range `>1.2.3-alpha.3` would be allowed to match the version `1.2.3-alpha.7`, but it would *not* be satisfied by `3.4.5-alpha.9`, even though `3.4.5-alpha.9` is technically "greater than" `1.2.3-alpha.3` according to the SemVer sort rules. The version range only accepts prerelease tags on the `1.2.3` version. The version `3.4.5` *would* satisfy the range, because it does not have a prerelease flag, and `3.4.5` is greater than `1.2.3-alpha.7`. The purpose for this behavior is twofold. First, prerelease versions frequently are updated very quickly, and contain many breaking changes that are (by the author's design) not yet fit for public consumption. Therefore, by default, they are excluded from range matching semantics. Second, a user who has opted into using a prerelease version has clearly indicated the intent to use *that specific* set of alpha/beta/rc versions. By including a prerelease tag in the range, the user is indicating that they are aware of the risk. However, it is still not appropriate to assume that they have opted into taking a similar risk on the *next* set of prerelease versions. Note that this behavior can be suppressed (treating all prerelease versions as if they were normal versions, for the purpose of range matching) by setting the `includePrerelease` flag on the options object to any [functions](https://github.com/npm/node-semver#functions) that do range matching. #### Prerelease Identifiers The method `.inc` takes an additional `identifier` string argument that will append the value of the string as a prerelease identifier: ```javascript semver.inc('1.2.3', 'prerelease', 'beta') // '1.2.4-beta.0' ``` command-line example: ```bash $ semver 1.2.3 -i prerelease --preid beta 1.2.4-beta.0 ``` Which then can be used to increment further: ```bash $ semver 1.2.4-beta.0 -i prerelease 1.2.4-beta.1 ``` ### Advanced Range Syntax Advanced range syntax desugars to primitive comparators in deterministic ways. Advanced ranges may be combined in the same way as primitive comparators using white space or `||`. #### Hyphen Ranges `X.Y.Z - A.B.C` Specifies an inclusive set. * `1.2.3 - 2.3.4` := `>=1.2.3 <=2.3.4` If a partial version is provided as the first version in the inclusive range, then the missing pieces are replaced with zeroes. * `1.2 - 2.3.4` := `>=1.2.0 <=2.3.4` If a partial version is provided as the second version in the inclusive range, then all versions that start with the supplied parts of the tuple are accepted, but nothing that would be greater than the provided tuple parts. * `1.2.3 - 2.3` := `>=1.2.3 <2.4.0-0` * `1.2.3 - 2` := `>=1.2.3 <3.0.0-0` #### X-Ranges `1.2.x` `1.X` `1.2.*` `*` Any of `X`, `x`, or `*` may be used to "stand in" for one of the numeric values in the `[major, minor, patch]` tuple. * `*` := `>=0.0.0` (Any non-prerelease version satisfies, unless `includePrerelease` is specified, in which case any version at all satisfies) * `1.x` := `>=1.0.0 <2.0.0-0` (Matching major version) * `1.2.x` := `>=1.2.0 <1.3.0-0` (Matching major and minor versions) A partial version range is treated as an X-Range, so the special character is in fact optional. * `""` (empty string) := `*` := `>=0.0.0` * `1` := `1.x.x` := `>=1.0.0 <2.0.0-0` * `1.2` := `1.2.x` := `>=1.2.0 <1.3.0-0` #### Tilde Ranges `~1.2.3` `~1.2` `~1` Allows patch-level changes if a minor version is specified on the comparator. Allows minor-level changes if not. * `~1.2.3` := `>=1.2.3 <1.(2+1).0` := `>=1.2.3 <1.3.0-0` * `~1.2` := `>=1.2.0 <1.(2+1).0` := `>=1.2.0 <1.3.0-0` (Same as `1.2.x`) * `~1` := `>=1.0.0 <(1+1).0.0` := `>=1.0.0 <2.0.0-0` (Same as `1.x`) * `~0.2.3` := `>=0.2.3 <0.(2+1).0` := `>=0.2.3 <0.3.0-0` * `~0.2` := `>=0.2.0 <0.(2+1).0` := `>=0.2.0 <0.3.0-0` (Same as `0.2.x`) * `~0` := `>=0.0.0 <(0+1).0.0` := `>=0.0.0 <1.0.0-0` (Same as `0.x`) * `~1.2.3-beta.2` := `>=1.2.3-beta.2 <1.3.0-0` Note that prereleases in the `1.2.3` version will be allowed, if they are greater than or equal to `beta.2`. So, `1.2.3-beta.4` would be allowed, but `1.2.4-beta.2` would not, because it is a prerelease of a different `[major, minor, patch]` tuple. #### Caret Ranges `^1.2.3` `^0.2.5` `^0.0.4` Allows changes that do not modify the left-most non-zero element in the `[major, minor, patch]` tuple. In other words, this allows patch and minor updates for versions `1.0.0` and above, patch updates for versions `0.X >=0.1.0`, and *no* updates for versions `0.0.X`. Many authors treat a `0.x` version as if the `x` were the major "breaking-change" indicator. Caret ranges are ideal when an author may make breaking changes between `0.2.4` and `0.3.0` releases, which is a common practice. However, it presumes that there will *not* be breaking changes between `0.2.4` and `0.2.5`. It allows for changes that are presumed to be additive (but non-breaking), according to commonly observed practices. * `^1.2.3` := `>=1.2.3 <2.0.0-0` * `^0.2.3` := `>=0.2.3 <0.3.0-0` * `^0.0.3` := `>=0.0.3 <0.0.4-0` * `^1.2.3-beta.2` := `>=1.2.3-beta.2 <2.0.0-0` Note that prereleases in the `1.2.3` version will be allowed, if they are greater than or equal to `beta.2`. So, `1.2.3-beta.4` would be allowed, but `1.2.4-beta.2` would not, because it is a prerelease of a different `[major, minor, patch]` tuple. * `^0.0.3-beta` := `>=0.0.3-beta <0.0.4-0` Note that prereleases in the `0.0.3` version *only* will be allowed, if they are greater than or equal to `beta`. So, `0.0.3-pr.2` would be allowed. When parsing caret ranges, a missing `patch` value desugars to the number `0`, but will allow flexibility within that value, even if the major and minor versions are both `0`. * `^1.2.x` := `>=1.2.0 <2.0.0-0` * `^0.0.x` := `>=0.0.0 <0.1.0-0` * `^0.0` := `>=0.0.0 <0.1.0-0` A missing `minor` and `patch` values will desugar to zero, but also allow flexibility within those values, even if the major version is zero. * `^1.x` := `>=1.0.0 <2.0.0-0` * `^0.x` := `>=0.0.0 <1.0.0-0` ### Range Grammar Putting all this together, here is a Backus-Naur grammar for ranges, for the benefit of parser authors: ```bnf range-set ::= range ( logical-or range ) * logical-or ::= ( ' ' ) * '||' ( ' ' ) * range ::= hyphen | simple ( ' ' simple ) * | '' hyphen ::= partial ' - ' partial simple ::= primitive | partial | tilde | caret primitive ::= ( '<' | '>' | '>=' | '<=' | '=' ) partial partial ::= xr ( '.' xr ( '.' xr qualifier ? )? )? xr ::= 'x' | 'X' | '*' | nr nr ::= '0' | ['1'-'9'] ( ['0'-'9'] ) * tilde ::= '~' partial caret ::= '^' partial qualifier ::= ( '-' pre )? ( '+' build )? pre ::= parts build ::= parts parts ::= part ( '.' part ) * part ::= nr | [-0-9A-Za-z]+ ``` ## Functions All methods and classes take a final `options` object argument. All options in this object are `false` by default. The options supported are: - `loose` Be more forgiving about not-quite-valid semver strings. (Any resulting output will always be 100% strict compliant, of course.) For backwards compatibility reasons, if the `options` argument is a boolean value instead of an object, it is interpreted to be the `loose` param. - `includePrerelease` Set to suppress the [default behavior](https://github.com/npm/node-semver#prerelease-tags) of excluding prerelease tagged versions from ranges unless they are explicitly opted into. Strict-mode Comparators and Ranges will be strict about the SemVer strings that they parse. * `valid(v)`: Return the parsed version, or null if it's not valid. * `inc(v, release)`: Return the version incremented by the release type (`major`, `premajor`, `minor`, `preminor`, `patch`, `prepatch`, or `prerelease`), or null if it's not valid * `premajor` in one call will bump the version up to the next major version and down to a prerelease of that major version. `preminor`, and `prepatch` work the same way. * If called from a non-prerelease version, the `prerelease` will work the same as `prepatch`. It increments the patch version, then makes a prerelease. If the input version is already a prerelease it simply increments it. * `prerelease(v)`: Returns an array of prerelease components, or null if none exist. Example: `prerelease('1.2.3-alpha.1') -> ['alpha', 1]` * `major(v)`: Return the major version number. * `minor(v)`: Return the minor version number. * `patch(v)`: Return the patch version number. * `intersects(r1, r2, loose)`: Return true if the two supplied ranges or comparators intersect. * `parse(v)`: Attempt to parse a string as a semantic version, returning either a `SemVer` object or `null`. ### Comparison * `gt(v1, v2)`: `v1 > v2` * `gte(v1, v2)`: `v1 >= v2` * `lt(v1, v2)`: `v1 < v2` * `lte(v1, v2)`: `v1 <= v2` * `eq(v1, v2)`: `v1 == v2` This is true if they're logically equivalent, even if they're not the exact same string. You already know how to compare strings. * `neq(v1, v2)`: `v1 != v2` The opposite of `eq`. * `cmp(v1, comparator, v2)`: Pass in a comparison string, and it'll call the corresponding function above. `"==="` and `"!=="` do simple string comparison, but are included for completeness. Throws if an invalid comparison string is provided. * `compare(v1, v2)`: Return `0` if `v1 == v2`, or `1` if `v1` is greater, or `-1` if `v2` is greater. Sorts in ascending order if passed to `Array.sort()`. * `rcompare(v1, v2)`: The reverse of compare. Sorts an array of versions in descending order when passed to `Array.sort()`. * `compareBuild(v1, v2)`: The same as `compare` but considers `build` when two versions are equal. Sorts in ascending order if passed to `Array.sort()`. `v2` is greater. Sorts in ascending order if passed to `Array.sort()`. * `diff(v1, v2)`: Returns difference between two versions by the release type (`major`, `premajor`, `minor`, `preminor`, `patch`, `prepatch`, or `prerelease`), or null if the versions are the same. ### Comparators * `intersects(comparator)`: Return true if the comparators intersect ### Ranges * `validRange(range)`: Return the valid range or null if it's not valid * `satisfies(version, range)`: Return true if the version satisfies the range. * `maxSatisfying(versions, range)`: Return the highest version in the list that satisfies the range, or `null` if none of them do. * `minSatisfying(versions, range)`: Return the lowest version in the list that satisfies the range, or `null` if none of them do. * `minVersion(range)`: Return the lowest version that can possibly match the given range. * `gtr(version, range)`: Return `true` if version is greater than all the versions possible in the range. * `ltr(version, range)`: Return `true` if version is less than all the versions possible in the range. * `outside(version, range, hilo)`: Return true if the version is outside the bounds of the range in either the high or low direction. The `hilo` argument must be either the string `'>'` or `'<'`. (This is the function called by `gtr` and `ltr`.) * `intersects(range)`: Return true if any of the ranges comparators intersect * `simplifyRange(versions, range)`: Return a "simplified" range that matches the same items in `versions` list as the range specified. Note that it does *not* guarantee that it would match the same versions in all cases, only for the set of versions provided. This is useful when generating ranges by joining together multiple versions with `||` programmatically, to provide the user with something a bit more ergonomic. If the provided range is shorter in string-length than the generated range, then that is returned. * `subset(subRange, superRange)`: Return `true` if the `subRange` range is entirely contained by the `superRange` range. Note that, since ranges may be non-contiguous, a version might not be greater than a range, less than a range, *or* satisfy a range! For example, the range `1.2 <1.2.9 || >2.0.0` would have a hole from `1.2.9` until `2.0.0`, so the version `1.2.10` would not be greater than the range (because `2.0.1` satisfies, which is higher), nor less than the range (since `1.2.8` satisfies, which is lower), and it also does not satisfy the range. If you want to know if a version satisfies or does not satisfy a range, use the `satisfies(version, range)` function. ### Coercion * `coerce(version, options)`: Coerces a string to semver if possible This aims to provide a very forgiving translation of a non-semver string to semver. It looks for the first digit in a string, and consumes all remaining characters which satisfy at least a partial semver (e.g., `1`, `1.2`, `1.2.3`) up to the max permitted length (256 characters). Longer versions are simply truncated (`4.6.3.9.2-alpha2` becomes `4.6.3`). All surrounding text is simply ignored (`v3.4 replaces v3.3.1` becomes `3.4.0`). Only text which lacks digits will fail coercion (`version one` is not valid). The maximum length for any semver component considered for coercion is 16 characters; longer components will be ignored (`10000000000000000.4.7.4` becomes `4.7.4`). The maximum value for any semver component is `Number.MAX_SAFE_INTEGER || (2**53 - 1)`; higher value components are invalid (`9999999999999999.4.7.4` is likely invalid). If the `options.rtl` flag is set, then `coerce` will return the right-most coercible tuple that does not share an ending index with a longer coercible tuple. For example, `1.2.3.4` will return `2.3.4` in rtl mode, not `4.0.0`. `1.2.3/4` will return `4.0.0`, because the `4` is not a part of any other overlapping SemVer tuple. ### Clean * `clean(version)`: Clean a string to be a valid semver if possible This will return a cleaned and trimmed semver version. If the provided version is not valid a null will be returned. This does not work for ranges. ex. * `s.clean(' = v 2.1.5foo')`: `null` * `s.clean(' = v 2.1.5foo', { loose: true })`: `'2.1.5-foo'` * `s.clean(' = v 2.1.5-foo')`: `null` * `s.clean(' = v 2.1.5-foo', { loose: true })`: `'2.1.5-foo'` * `s.clean('=v2.1.5')`: `'2.1.5'` * `s.clean(' =v2.1.5')`: `2.1.5` * `s.clean(' 2.1.5 ')`: `'2.1.5'` * `s.clean('~1.0.0')`: `null` ## Exported Modules <!-- TODO: Make sure that all of these items are documented (classes aren't, eg), and then pull the module name into the documentation for that specific thing. --> You may pull in just the part of this semver utility that you need, if you are sensitive to packing and tree-shaking concerns. The main `require('semver')` export uses getter functions to lazily load the parts of the API that are used. The following modules are available: * `require('semver')` * `require('semver/classes')` * `require('semver/classes/comparator')` * `require('semver/classes/range')` * `require('semver/classes/semver')` * `require('semver/functions/clean')` * `require('semver/functions/cmp')` * `require('semver/functions/coerce')` * `require('semver/functions/compare')` * `require('semver/functions/compare-build')` * `require('semver/functions/compare-loose')` * `require('semver/functions/diff')` * `require('semver/functions/eq')` * `require('semver/functions/gt')` * `require('semver/functions/gte')` * `require('semver/functions/inc')` * `require('semver/functions/lt')` * `require('semver/functions/lte')` * `require('semver/functions/major')` * `require('semver/functions/minor')` * `require('semver/functions/neq')` * `require('semver/functions/parse')` * `require('semver/functions/patch')` * `require('semver/functions/prerelease')` * `require('semver/functions/rcompare')` * `require('semver/functions/rsort')` * `require('semver/functions/satisfies')` * `require('semver/functions/sort')` * `require('semver/functions/valid')` * `require('semver/ranges/gtr')` * `require('semver/ranges/intersects')` * `require('semver/ranges/ltr')` * `require('semver/ranges/max-satisfying')` * `require('semver/ranges/min-satisfying')` * `require('semver/ranges/min-version')` * `require('semver/ranges/outside')` * `require('semver/ranges/to-comparators')` * `require('semver/ranges/valid')` # minimatch A minimal matching utility. [](http://travis-ci.org/isaacs/minimatch) This is the matching library used internally by npm. It works by converting glob expressions into JavaScript `RegExp` objects. ## Usage ```javascript var minimatch = require("minimatch") minimatch("bar.foo", "*.foo") // true! minimatch("bar.foo", "*.bar") // false! minimatch("bar.foo", "*.+(bar|foo)", { debug: true }) // true, and noisy! ``` ## Features Supports these glob features: * Brace Expansion * Extended glob matching * "Globstar" `**` matching See: * `man sh` * `man bash` * `man 3 fnmatch` * `man 5 gitignore` ## Minimatch Class Create a minimatch object by instantiating the `minimatch.Minimatch` class. ```javascript var Minimatch = require("minimatch").Minimatch var mm = new Minimatch(pattern, options) ``` ### Properties * `pattern` The original pattern the minimatch object represents. * `options` The options supplied to the constructor. * `set` A 2-dimensional array of regexp or string expressions. Each row in the array corresponds to a brace-expanded pattern. Each item in the row corresponds to a single path-part. For example, the pattern `{a,b/c}/d` would expand to a set of patterns like: [ [ a, d ] , [ b, c, d ] ] If a portion of the pattern doesn't have any "magic" in it (that is, it's something like `"foo"` rather than `fo*o?`), then it will be left as a string rather than converted to a regular expression. * `regexp` Created by the `makeRe` method. A single regular expression expressing the entire pattern. This is useful in cases where you wish to use the pattern somewhat like `fnmatch(3)` with `FNM_PATH` enabled. * `negate` True if the pattern is negated. * `comment` True if the pattern is a comment. * `empty` True if the pattern is `""`. ### Methods * `makeRe` Generate the `regexp` member if necessary, and return it. Will return `false` if the pattern is invalid. * `match(fname)` Return true if the filename matches the pattern, or false otherwise. * `matchOne(fileArray, patternArray, partial)` Take a `/`-split filename, and match it against a single row in the `regExpSet`. This method is mainly for internal use, but is exposed so that it can be used by a glob-walker that needs to avoid excessive filesystem calls. All other methods are internal, and will be called as necessary. ### minimatch(path, pattern, options) Main export. Tests a path against the pattern using the options. ```javascript var isJS = minimatch(file, "*.js", { matchBase: true }) ``` ### minimatch.filter(pattern, options) Returns a function that tests its supplied argument, suitable for use with `Array.filter`. Example: ```javascript var javascripts = fileList.filter(minimatch.filter("*.js", {matchBase: true})) ``` ### minimatch.match(list, pattern, options) Match against the list of files, in the style of fnmatch or glob. If nothing is matched, and options.nonull is set, then return a list containing the pattern itself. ```javascript var javascripts = minimatch.match(fileList, "*.js", {matchBase: true})) ``` ### minimatch.makeRe(pattern, options) Make a regular expression object from the pattern. ## Options All options are `false` by default. ### debug Dump a ton of stuff to stderr. ### nobrace Do not expand `{a,b}` and `{1..3}` brace sets. ### noglobstar Disable `**` matching against multiple folder names. ### dot Allow patterns to match filenames starting with a period, even if the pattern does not explicitly have a period in that spot. Note that by default, `a/**/b` will **not** match `a/.d/b`, unless `dot` is set. ### noext Disable "extglob" style patterns like `+(a|b)`. ### nocase Perform a case-insensitive match. ### nonull When a match is not found by `minimatch.match`, return a list containing the pattern itself if this option is set. When not set, an empty list is returned if there are no matches. ### matchBase If set, then patterns without slashes will be matched against the basename of the path if it contains slashes. For example, `a?b` would match the path `/xyz/123/acb`, but not `/xyz/acb/123`. ### nocomment Suppress the behavior of treating `#` at the start of a pattern as a comment. ### nonegate Suppress the behavior of treating a leading `!` character as negation. ### flipNegate Returns from negate expressions the same as if they were not negated. (Ie, true on a hit, false on a miss.) ### partial Compare a partial path to a pattern. As long as the parts of the path that are present are not contradicted by the pattern, it will be treated as a match. This is useful in applications where you're walking through a folder structure, and don't yet have the full path, but want to ensure that you do not walk down paths that can never be a match. For example, ```js minimatch('/a/b', '/a/*/c/d', { partial: true }) // true, might be /a/b/c/d minimatch('/a/b', '/**/d', { partial: true }) // true, might be /a/b/.../d minimatch('/x/y/z', '/a/**/z', { partial: true }) // false, because x !== a ``` ### allowWindowsEscape Windows path separator `\` is by default converted to `/`, which prohibits the usage of `\` as a escape character. This flag skips that behavior and allows using the escape character. ## Comparisons to other fnmatch/glob implementations While strict compliance with the existing standards is a worthwhile goal, some discrepancies exist between minimatch and other implementations, and are intentional. If the pattern starts with a `!` character, then it is negated. Set the `nonegate` flag to suppress this behavior, and treat leading `!` characters normally. This is perhaps relevant if you wish to start the pattern with a negative extglob pattern like `!(a|B)`. Multiple `!` characters at the start of a pattern will negate the pattern multiple times. If a pattern starts with `#`, then it is treated as a comment, and will not match anything. Use `\#` to match a literal `#` at the start of a line, or set the `nocomment` flag to suppress this behavior. The double-star character `**` is supported by default, unless the `noglobstar` flag is set. This is supported in the manner of bsdglob and bash 4.1, where `**` only has special significance if it is the only thing in a path part. That is, `a/**/b` will match `a/x/y/b`, but `a/**b` will not. If an escaped pattern has no matches, and the `nonull` flag is set, then minimatch.match returns the pattern as-provided, rather than interpreting the character escapes. For example, `minimatch.match([], "\\*a\\?")` will return `"\\*a\\?"` rather than `"*a?"`. This is akin to setting the `nullglob` option in bash, except that it does not resolve escaped pattern characters. If brace expansion is not disabled, then it is performed before any other interpretation of the glob pattern. Thus, a pattern like `+(a|{b),c)}`, which would not be valid in bash or zsh, is expanded **first** into the set of `+(a|b)` and `+(a|c)`, and those patterns are checked for validity. Since those two are valid, matching proceeds. # axios // adapters The modules under `adapters/` are modules that handle dispatching a request and settling a returned `Promise` once a response is received. ## Example ```js var settle = require('./../core/settle'); module.exports = function myAdapter(config) { // At this point: // - config has been merged with defaults // - request transformers have already run // - request interceptors have already run // Make the request using config provided // Upon response settle the Promise return new Promise(function(resolve, reject) { var response = { data: responseData, status: request.status, statusText: request.statusText, headers: responseHeaders, config: config, request: request }; settle(resolve, reject, response); // From here: // - response transformers will run // - response interceptors will run }); } ``` # eslint-visitor-keys [](https://www.npmjs.com/package/eslint-visitor-keys) [](http://www.npmtrends.com/eslint-visitor-keys) [](https://travis-ci.org/eslint/eslint-visitor-keys) [](https://david-dm.org/eslint/eslint-visitor-keys) Constants and utilities about visitor keys to traverse AST. ## 💿 Installation Use [npm] to install. ```bash $ npm install eslint-visitor-keys ``` ### Requirements - [Node.js] 4.0.0 or later. ## 📖 Usage ```js const evk = require("eslint-visitor-keys") ``` ### evk.KEYS > type: `{ [type: string]: string[] | undefined }` Visitor keys. This keys are frozen. This is an object. Keys are the type of [ESTree] nodes. Their values are an array of property names which have child nodes. For example: ``` console.log(evk.KEYS.AssignmentExpression) // → ["left", "right"] ``` ### evk.getKeys(node) > type: `(node: object) => string[]` Get the visitor keys of a given AST node. This is similar to `Object.keys(node)` of ES Standard, but some keys are excluded: `parent`, `leadingComments`, `trailingComments`, and names which start with `_`. This will be used to traverse unknown nodes. For example: ``` const node = { type: "AssignmentExpression", left: { type: "Identifier", name: "foo" }, right: { type: "Literal", value: 0 } } console.log(evk.getKeys(node)) // → ["type", "left", "right"] ``` ### evk.unionWith(additionalKeys) > type: `(additionalKeys: object) => { [type: string]: string[] | undefined }` Make the union set with `evk.KEYS` and the given keys. - The order of keys is, `additionalKeys` is at first, then `evk.KEYS` is concatenated after that. - It removes duplicated keys as keeping the first one. For example: ``` console.log(evk.unionWith({ MethodDefinition: ["decorators"] })) // → { ..., MethodDefinition: ["decorators", "key", "value"], ... } ``` ## 📰 Change log See [GitHub releases](https://github.com/eslint/eslint-visitor-keys/releases). ## 🍻 Contributing Welcome. See [ESLint contribution guidelines](https://eslint.org/docs/developer-guide/contributing/). ### Development commands - `npm test` runs tests and measures code coverage. - `npm run lint` checks source codes with ESLint. - `npm run coverage` opens the code coverage report of the previous test with your default browser. - `npm run release` publishes this package to [npm] registory. [npm]: https://www.npmjs.com/ [Node.js]: https://nodejs.org/en/ [ESTree]: https://github.com/estree/estree # node-supports-preserve-symlinks-flag <sup>[![Version Badge][npm-version-svg]][package-url]</sup> [![github actions][actions-image]][actions-url] [![coverage][codecov-image]][codecov-url] [![dependency status][deps-svg]][deps-url] [![dev dependency status][dev-deps-svg]][dev-deps-url] [![License][license-image]][license-url] [![Downloads][downloads-image]][downloads-url] [![npm badge][npm-badge-png]][package-url] Determine if the current node version supports the `--preserve-symlinks` flag. ## Example ```js var supportsPreserveSymlinks = require('node-supports-preserve-symlinks-flag'); var assert = require('assert'); assert.equal(supportsPreserveSymlinks, null); // in a browser assert.equal(supportsPreserveSymlinks, false); // in node < v6.2 assert.equal(supportsPreserveSymlinks, true); // in node v6.2+ ``` ## Tests Simply clone the repo, `npm install`, and run `npm test` [package-url]: https://npmjs.org/package/node-supports-preserve-symlinks-flag [npm-version-svg]: https://versionbadg.es/inspect-js/node-supports-preserve-symlinks-flag.svg [deps-svg]: https://david-dm.org/inspect-js/node-supports-preserve-symlinks-flag.svg [deps-url]: https://david-dm.org/inspect-js/node-supports-preserve-symlinks-flag [dev-deps-svg]: https://david-dm.org/inspect-js/node-supports-preserve-symlinks-flag/dev-status.svg [dev-deps-url]: https://david-dm.org/inspect-js/node-supports-preserve-symlinks-flag#info=devDependencies [npm-badge-png]: https://nodei.co/npm/node-supports-preserve-symlinks-flag.png?downloads=true&stars=true [license-image]: https://img.shields.io/npm/l/node-supports-preserve-symlinks-flag.svg [license-url]: LICENSE [downloads-image]: https://img.shields.io/npm/dm/node-supports-preserve-symlinks-flag.svg [downloads-url]: https://npm-stat.com/charts.html?package=node-supports-preserve-symlinks-flag [codecov-image]: https://codecov.io/gh/inspect-js/node-supports-preserve-symlinks-flag/branch/main/graphs/badge.svg [codecov-url]: https://app.codecov.io/gh/inspect-js/node-supports-preserve-symlinks-flag/ [actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/inspect-js/node-supports-preserve-symlinks-flag [actions-url]: https://github.com/inspect-js/node-supports-preserve-symlinks-flag/actions # line-column [](https://travis-ci.org/io-monad/line-column) [](https://coveralls.io/github/io-monad/line-column?branch=master) [](https://badge.fury.io/js/line-column) Node module to convert efficiently index to/from line-column in a string. ## Install npm install line-column ## Usage ### lineColumn(str, options = {}) Returns a `LineColumnFinder` instance for given string `str`. #### Options | Key | Description | Default | | ------- | ----------- | ------- | | `origin` | The origin value of line number and column number | `1` | ### lineColumn(str, index) This is just a shorthand for `lineColumn(str).fromIndex(index)`. ### LineColumnFinder#fromIndex(index) Find line and column from index in the string. Parameters: - `index` - `number` Index in the string. (0-origin) Returns: - `{ line: x, col: y }` Found line number and column number. - `null` if the given index is out of range. ### LineColumnFinder#toIndex(line, column) Find index from line and column in the string. Parameters: - `line` - `number` Line number in the string. - `column` - `number` Column number in the string. or - `{ line: x, col: y }` - `Object` line and column numbers in the string.<br>A key name `column` can be used instead of `col`. or - `[ line, col ]` - `Array` line and column numbers in the string. Returns: - `number` Found index in the string. - `-1` if the given line or column is out of range. ## Example ```js var lineColumn = require("line-column"); var testString = [ "ABCDEFG\n", // line:0, index:0 "HIJKLMNOPQRSTU\n", // line:1, index:8 "VWXYZ\n", // line:2, index:23 "日本語の文字\n", // line:3, index:29 "English words" // line:4, index:36 ].join(""); // length:49 lineColumn(testString).fromIndex(3) // { line: 1, col: 4 } lineColumn(testString).fromIndex(33) // { line: 4, col: 5 } lineColumn(testString).toIndex(1, 4) // 3 lineColumn(testString).toIndex(4, 5) // 33 // Shorthand of .fromIndex (compatible with find-line-column) lineColumn(testString, 33) // { line:4, col: 5 } // Object or Array is also acceptable lineColumn(testString).toIndex({ line: 4, col: 5 }) // 33 lineColumn(testString).toIndex({ line: 4, column: 5 }) // 33 lineColumn(testString).toIndex([4, 5]) // 33 // You can cache it for the same string. It is so efficient. (See benchmark) var finder = lineColumn(testString); finder.fromIndex(33) // { line: 4, column: 5 } finder.toIndex(4, 5) // 33 // For 0-origin line and column numbers var oneOrigin = lineColumn(testString, { origin: 0 }); oneOrigin.fromIndex(33) // { line: 3, column: 4 } oneOrigin.toIndex(3, 4) // 33 ``` ## Testing npm test ## Benchmark The popular package [find-line-column](https://www.npmjs.com/package/find-line-column) provides the same "index to line-column" feature. Here is some benchmarking on `line-column` vs `find-line-column`. You can run this benchmark by `npm run benchmark`. See [benchmark/](benchmark/) for the source code. ``` long text + line-column (not cached) x 72,989 ops/sec ±0.83% (89 runs sampled) long text + line-column (cached) x 13,074,242 ops/sec ±0.32% (89 runs sampled) long text + find-line-column x 33,887 ops/sec ±0.54% (84 runs sampled) short text + line-column (not cached) x 1,636,766 ops/sec ±0.77% (82 runs sampled) short text + line-column (cached) x 21,699,686 ops/sec ±1.04% (82 runs sampled) short text + find-line-column x 382,145 ops/sec ±1.04% (85 runs sampled) ``` As you might have noticed, even not cached version of `line-column` is 2x - 4x faster than `find-line-column`, and cached version of `line-column` is remarkable 50x - 380x faster. ## Contributing 1. Fork it! 2. Create your feature branch: `git checkout -b my-new-feature` 3. Commit your changes: `git commit -am 'Add some feature'` 4. Push to the branch: `git push origin my-new-feature` 5. Submit a pull request :D ## License MIT (See LICENSE) # minipass A _very_ minimal implementation of a [PassThrough stream](https://nodejs.org/api/stream.html#stream_class_stream_passthrough) [It's very fast](https://docs.google.com/spreadsheets/d/1oObKSrVwLX_7Ut4Z6g3fZW-AX1j1-k6w-cDsrkaSbHM/edit#gid=0) for objects, strings, and buffers. Supports `pipe()`ing (including multi-`pipe()` and backpressure transmission), buffering data until either a `data` event handler or `pipe()` is added (so you don't lose the first chunk), and most other cases where PassThrough is a good idea. There is a `read()` method, but it's much more efficient to consume data from this stream via `'data'` events or by calling `pipe()` into some other stream. Calling `read()` requires the buffer to be flattened in some cases, which requires copying memory. There is also no `unpipe()` method. Once you start piping, there is no stopping it! If you set `objectMode: true` in the options, then whatever is written will be emitted. Otherwise, it'll do a minimal amount of Buffer copying to ensure proper Streams semantics when `read(n)` is called. `objectMode` can also be set by doing `stream.objectMode = true`, or by writing any non-string/non-buffer data. `objectMode` cannot be set to false once it is set. This is not a `through` or `through2` stream. It doesn't transform the data, it just passes it right through. If you want to transform the data, extend the class, and override the `write()` method. Once you're done transforming the data however you want, call `super.write()` with the transform output. For some examples of streams that extend Minipass in various ways, check out: - [minizlib](http://npm.im/minizlib) - [fs-minipass](http://npm.im/fs-minipass) - [tar](http://npm.im/tar) - [minipass-collect](http://npm.im/minipass-collect) - [minipass-flush](http://npm.im/minipass-flush) - [minipass-pipeline](http://npm.im/minipass-pipeline) - [tap](http://npm.im/tap) - [tap-parser](http://npm.im/tap-parser) - [treport](http://npm.im/treport) - [minipass-fetch](http://npm.im/minipass-fetch) - [pacote](http://npm.im/pacote) - [make-fetch-happen](http://npm.im/make-fetch-happen) - [cacache](http://npm.im/cacache) - [ssri](http://npm.im/ssri) - [npm-registry-fetch](http://npm.im/npm-registry-fetch) - [minipass-json-stream](http://npm.im/minipass-json-stream) - [minipass-sized](http://npm.im/minipass-sized) ## Differences from Node.js Streams There are several things that make Minipass streams different from (and in some ways superior to) Node.js core streams. Please read these caveats if you are familiar with node-core streams and intend to use Minipass streams in your programs. ### Timing Minipass streams are designed to support synchronous use-cases. Thus, data is emitted as soon as it is available, always. It is buffered until read, but no longer. Another way to look at it is that Minipass streams are exactly as synchronous as the logic that writes into them. This can be surprising if your code relies on `PassThrough.write()` always providing data on the next tick rather than the current one, or being able to call `resume()` and not have the entire buffer disappear immediately. However, without this synchronicity guarantee, there would be no way for Minipass to achieve the speeds it does, or support the synchronous use cases that it does. Simply put, waiting takes time. This non-deferring approach makes Minipass streams much easier to reason about, especially in the context of Promises and other flow-control mechanisms. ### No High/Low Water Marks Node.js core streams will optimistically fill up a buffer, returning `true` on all writes until the limit is hit, even if the data has nowhere to go. Then, they will not attempt to draw more data in until the buffer size dips below a minimum value. Minipass streams are much simpler. The `write()` method will return `true` if the data has somewhere to go (which is to say, given the timing guarantees, that the data is already there by the time `write()` returns). If the data has nowhere to go, then `write()` returns false, and the data sits in a buffer, to be drained out immediately as soon as anyone consumes it. ### Hazards of Buffering (or: Why Minipass Is So Fast) Since data written to a Minipass stream is immediately written all the way through the pipeline, and `write()` always returns true/false based on whether the data was fully flushed, backpressure is communicated immediately to the upstream caller. This minimizes buffering. Consider this case: ```js const {PassThrough} = require('stream') const p1 = new PassThrough({ highWaterMark: 1024 }) const p2 = new PassThrough({ highWaterMark: 1024 }) const p3 = new PassThrough({ highWaterMark: 1024 }) const p4 = new PassThrough({ highWaterMark: 1024 }) p1.pipe(p2).pipe(p3).pipe(p4) p4.on('data', () => console.log('made it through')) // this returns false and buffers, then writes to p2 on next tick (1) // p2 returns false and buffers, pausing p1, then writes to p3 on next tick (2) // p3 returns false and buffers, pausing p2, then writes to p4 on next tick (3) // p4 returns false and buffers, pausing p3, then emits 'data' and 'drain' // on next tick (4) // p3 sees p4's 'drain' event, and calls resume(), emitting 'resume' and // 'drain' on next tick (5) // p2 sees p3's 'drain', calls resume(), emits 'resume' and 'drain' on next tick (6) // p1 sees p2's 'drain', calls resume(), emits 'resume' and 'drain' on next // tick (7) p1.write(Buffer.alloc(2048)) // returns false ``` Along the way, the data was buffered and deferred at each stage, and multiple event deferrals happened, for an unblocked pipeline where it was perfectly safe to write all the way through! Furthermore, setting a `highWaterMark` of `1024` might lead someone reading the code to think an advisory maximum of 1KiB is being set for the pipeline. However, the actual advisory buffering level is the _sum_ of `highWaterMark` values, since each one has its own bucket. Consider the Minipass case: ```js const m1 = new Minipass() const m2 = new Minipass() const m3 = new Minipass() const m4 = new Minipass() m1.pipe(m2).pipe(m3).pipe(m4) m4.on('data', () => console.log('made it through')) // m1 is flowing, so it writes the data to m2 immediately // m2 is flowing, so it writes the data to m3 immediately // m3 is flowing, so it writes the data to m4 immediately // m4 is flowing, so it fires the 'data' event immediately, returns true // m4's write returned true, so m3 is still flowing, returns true // m3's write returned true, so m2 is still flowing, returns true // m2's write returned true, so m1 is still flowing, returns true // No event deferrals or buffering along the way! m1.write(Buffer.alloc(2048)) // returns true ``` It is extremely unlikely that you _don't_ want to buffer any data written, or _ever_ buffer data that can be flushed all the way through. Neither node-core streams nor Minipass ever fail to buffer written data, but node-core streams do a lot of unnecessary buffering and pausing. As always, the faster implementation is the one that does less stuff and waits less time to do it. ### Immediately emit `end` for empty streams (when not paused) If a stream is not paused, and `end()` is called before writing any data into it, then it will emit `end` immediately. If you have logic that occurs on the `end` event which you don't want to potentially happen immediately (for example, closing file descriptors, moving on to the next entry in an archive parse stream, etc.) then be sure to call `stream.pause()` on creation, and then `stream.resume()` once you are ready to respond to the `end` event. ### Emit `end` When Asked One hazard of immediately emitting `'end'` is that you may not yet have had a chance to add a listener. In order to avoid this hazard, Minipass streams safely re-emit the `'end'` event if a new listener is added after `'end'` has been emitted. Ie, if you do `stream.on('end', someFunction)`, and the stream has already emitted `end`, then it will call the handler right away. (You can think of this somewhat like attaching a new `.then(fn)` to a previously-resolved Promise.) To prevent calling handlers multiple times who would not expect multiple ends to occur, all listeners are removed from the `'end'` event whenever it is emitted. ### Impact of "immediate flow" on Tee-streams A "tee stream" is a stream piping to multiple destinations: ```js const tee = new Minipass() t.pipe(dest1) t.pipe(dest2) t.write('foo') // goes to both destinations ``` Since Minipass streams _immediately_ process any pending data through the pipeline when a new pipe destination is added, this can have surprising effects, especially when a stream comes in from some other function and may or may not have data in its buffer. ```js // WARNING! WILL LOSE DATA! const src = new Minipass() src.write('foo') src.pipe(dest1) // 'foo' chunk flows to dest1 immediately, and is gone src.pipe(dest2) // gets nothing! ``` The solution is to create a dedicated tee-stream junction that pipes to both locations, and then pipe to _that_ instead. ```js // Safe example: tee to both places const src = new Minipass() src.write('foo') const tee = new Minipass() tee.pipe(dest1) tee.pipe(dest2) src.pipe(tee) // tee gets 'foo', pipes to both locations ``` The same caveat applies to `on('data')` event listeners. The first one added will _immediately_ receive all of the data, leaving nothing for the second: ```js // WARNING! WILL LOSE DATA! const src = new Minipass() src.write('foo') src.on('data', handler1) // receives 'foo' right away src.on('data', handler2) // nothing to see here! ``` Using a dedicated tee-stream can be used in this case as well: ```js // Safe example: tee to both data handlers const src = new Minipass() src.write('foo') const tee = new Minipass() tee.on('data', handler1) tee.on('data', handler2) src.pipe(tee) ``` ## USAGE It's a stream! Use it like a stream and it'll most likely do what you want. ```js const Minipass = require('minipass') const mp = new Minipass(options) // optional: { encoding, objectMode } mp.write('foo') mp.pipe(someOtherStream) mp.end('bar') ``` ### OPTIONS * `encoding` How would you like the data coming _out_ of the stream to be encoded? Accepts any values that can be passed to `Buffer.toString()`. * `objectMode` Emit data exactly as it comes in. This will be flipped on by default if you write() something other than a string or Buffer at any point. Setting `objectMode: true` will prevent setting any encoding value. ### API Implements the user-facing portions of Node.js's `Readable` and `Writable` streams. ### Methods * `write(chunk, [encoding], [callback])` - Put data in. (Note that, in the base Minipass class, the same data will come out.) Returns `false` if the stream will buffer the next write, or true if it's still in "flowing" mode. * `end([chunk, [encoding]], [callback])` - Signal that you have no more data to write. This will queue an `end` event to be fired when all the data has been consumed. * `setEncoding(encoding)` - Set the encoding for data coming of the stream. This can only be done once. * `pause()` - No more data for a while, please. This also prevents `end` from being emitted for empty streams until the stream is resumed. * `resume()` - Resume the stream. If there's data in the buffer, it is all discarded. Any buffered events are immediately emitted. * `pipe(dest)` - Send all output to the stream provided. There is no way to unpipe. When data is emitted, it is immediately written to any and all pipe destinations. * `on(ev, fn)`, `emit(ev, fn)` - Minipass streams are EventEmitters. Some events are given special treatment, however. (See below under "events".) * `promise()` - Returns a Promise that resolves when the stream emits `end`, or rejects if the stream emits `error`. * `collect()` - Return a Promise that resolves on `end` with an array containing each chunk of data that was emitted, or rejects if the stream emits `error`. Note that this consumes the stream data. * `concat()` - Same as `collect()`, but concatenates the data into a single Buffer object. Will reject the returned promise if the stream is in objectMode, or if it goes into objectMode by the end of the data. * `read(n)` - Consume `n` bytes of data out of the buffer. If `n` is not provided, then consume all of it. If `n` bytes are not available, then it returns null. **Note** consuming streams in this way is less efficient, and can lead to unnecessary Buffer copying. * `destroy([er])` - Destroy the stream. If an error is provided, then an `'error'` event is emitted. If the stream has a `close()` method, and has not emitted a `'close'` event yet, then `stream.close()` will be called. Any Promises returned by `.promise()`, `.collect()` or `.concat()` will be rejected. After being destroyed, writing to the stream will emit an error. No more data will be emitted if the stream is destroyed, even if it was previously buffered. ### Properties * `bufferLength` Read-only. Total number of bytes buffered, or in the case of objectMode, the total number of objects. * `encoding` The encoding that has been set. (Setting this is equivalent to calling `setEncoding(enc)` and has the same prohibition against setting multiple times.) * `flowing` Read-only. Boolean indicating whether a chunk written to the stream will be immediately emitted. * `emittedEnd` Read-only. Boolean indicating whether the end-ish events (ie, `end`, `prefinish`, `finish`) have been emitted. Note that listening on any end-ish event will immediateyl re-emit it if it has already been emitted. * `writable` Whether the stream is writable. Default `true`. Set to `false` when `end()` * `readable` Whether the stream is readable. Default `true`. * `buffer` A [yallist](http://npm.im/yallist) linked list of chunks written to the stream that have not yet been emitted. (It's probably a bad idea to mess with this.) * `pipes` A [yallist](http://npm.im/yallist) linked list of streams that this stream is piping into. (It's probably a bad idea to mess with this.) * `destroyed` A getter that indicates whether the stream was destroyed. * `paused` True if the stream has been explicitly paused, otherwise false. * `objectMode` Indicates whether the stream is in `objectMode`. Once set to `true`, it cannot be set to `false`. ### Events * `data` Emitted when there's data to read. Argument is the data to read. This is never emitted while not flowing. If a listener is attached, that will resume the stream. * `end` Emitted when there's no more data to read. This will be emitted immediately for empty streams when `end()` is called. If a listener is attached, and `end` was already emitted, then it will be emitted again. All listeners are removed when `end` is emitted. * `prefinish` An end-ish event that follows the same logic as `end` and is emitted in the same conditions where `end` is emitted. Emitted after `'end'`. * `finish` An end-ish event that follows the same logic as `end` and is emitted in the same conditions where `end` is emitted. Emitted after `'prefinish'`. * `close` An indication that an underlying resource has been released. Minipass does not emit this event, but will defer it until after `end` has been emitted, since it throws off some stream libraries otherwise. * `drain` Emitted when the internal buffer empties, and it is again suitable to `write()` into the stream. * `readable` Emitted when data is buffered and ready to be read by a consumer. * `resume` Emitted when stream changes state from buffering to flowing mode. (Ie, when `resume` is called, `pipe` is called, or a `data` event listener is added.) ### Static Methods * `Minipass.isStream(stream)` Returns `true` if the argument is a stream, and false otherwise. To be considered a stream, the object must be either an instance of Minipass, or an EventEmitter that has either a `pipe()` method, or both `write()` and `end()` methods. (Pretty much any stream in node-land will return `true` for this.) ## EXAMPLES Here are some examples of things you can do with Minipass streams. ### simple "are you done yet" promise ```js mp.promise().then(() => { // stream is finished }, er => { // stream emitted an error }) ``` ### collecting ```js mp.collect().then(all => { // all is an array of all the data emitted // encoding is supported in this case, so // so the result will be a collection of strings if // an encoding is specified, or buffers/objects if not. // // In an async function, you may do // const data = await stream.collect() }) ``` ### collecting into a single blob This is a bit slower because it concatenates the data into one chunk for you, but if you're going to do it yourself anyway, it's convenient this way: ```js mp.concat().then(onebigchunk => { // onebigchunk is a string if the stream // had an encoding set, or a buffer otherwise. }) ``` ### iteration You can iterate over streams synchronously or asynchronously in platforms that support it. Synchronous iteration will end when the currently available data is consumed, even if the `end` event has not been reached. In string and buffer mode, the data is concatenated, so unless multiple writes are occurring in the same tick as the `read()`, sync iteration loops will generally only have a single iteration. To consume chunks in this way exactly as they have been written, with no flattening, create the stream with the `{ objectMode: true }` option. ```js const mp = new Minipass({ objectMode: true }) mp.write('a') mp.write('b') for (let letter of mp) { console.log(letter) // a, b } mp.write('c') mp.write('d') for (let letter of mp) { console.log(letter) // c, d } mp.write('e') mp.end() for (let letter of mp) { console.log(letter) // e } for (let letter of mp) { console.log(letter) // nothing } ``` Asynchronous iteration will continue until the end event is reached, consuming all of the data. ```js const mp = new Minipass({ encoding: 'utf8' }) // some source of some data let i = 5 const inter = setInterval(() => { if (i-- > 0) mp.write(Buffer.from('foo\n', 'utf8')) else { mp.end() clearInterval(inter) } }, 100) // consume the data with asynchronous iteration async function consume () { for await (let chunk of mp) { console.log(chunk) } return 'ok' } consume().then(res => console.log(res)) // logs `foo\n` 5 times, and then `ok` ``` ### subclass that `console.log()`s everything written into it ```js class Logger extends Minipass { write (chunk, encoding, callback) { console.log('WRITE', chunk, encoding) return super.write(chunk, encoding, callback) } end (chunk, encoding, callback) { console.log('END', chunk, encoding) return super.end(chunk, encoding, callback) } } someSource.pipe(new Logger()).pipe(someDest) ``` ### same thing, but using an inline anonymous class ```js // js classes are fun someSource .pipe(new (class extends Minipass { emit (ev, ...data) { // let's also log events, because debugging some weird thing console.log('EMIT', ev) return super.emit(ev, ...data) } write (chunk, encoding, callback) { console.log('WRITE', chunk, encoding) return super.write(chunk, encoding, callback) } end (chunk, encoding, callback) { console.log('END', chunk, encoding) return super.end(chunk, encoding, callback) } })) .pipe(someDest) ``` ### subclass that defers 'end' for some reason ```js class SlowEnd extends Minipass { emit (ev, ...args) { if (ev === 'end') { console.log('going to end, hold on a sec') setTimeout(() => { console.log('ok, ready to end now') super.emit('end', ...args) }, 100) } else { return super.emit(ev, ...args) } } } ``` ### transform that creates newline-delimited JSON ```js class NDJSONEncode extends Minipass { write (obj, cb) { try { // JSON.stringify can throw, emit an error on that return super.write(JSON.stringify(obj) + '\n', 'utf8', cb) } catch (er) { this.emit('error', er) } } end (obj, cb) { if (typeof obj === 'function') { cb = obj obj = undefined } if (obj !== undefined) { this.write(obj) } return super.end(cb) } } ``` ### transform that parses newline-delimited JSON ```js class NDJSONDecode extends Minipass { constructor (options) { // always be in object mode, as far as Minipass is concerned super({ objectMode: true }) this._jsonBuffer = '' } write (chunk, encoding, cb) { if (typeof chunk === 'string' && typeof encoding === 'string' && encoding !== 'utf8') { chunk = Buffer.from(chunk, encoding).toString() } else if (Buffer.isBuffer(chunk)) chunk = chunk.toString() } if (typeof encoding === 'function') { cb = encoding } const jsonData = (this._jsonBuffer + chunk).split('\n') this._jsonBuffer = jsonData.pop() for (let i = 0; i < jsonData.length; i++) { try { // JSON.parse can throw, emit an error on that super.write(JSON.parse(jsonData[i])) } catch (er) { this.emit('error', er) continue } } if (cb) cb() } } ``` # <img src="./logo.png" alt="bn.js" width="160" height="160" /> > BigNum in pure javascript [](http://travis-ci.org/indutny/bn.js) ## Install `npm install --save bn.js` ## Usage ```js const BN = require('bn.js'); var a = new BN('dead', 16); var b = new BN('101010', 2); var res = a.add(b); console.log(res.toString(10)); // 57047 ``` **Note**: decimals are not supported in this library. ## Notation ### Prefixes There are several prefixes to instructions that affect the way the work. Here is the list of them in the order of appearance in the function name: * `i` - perform operation in-place, storing the result in the host object (on which the method was invoked). Might be used to avoid number allocation costs * `u` - unsigned, ignore the sign of operands when performing operation, or always return positive value. Second case applies to reduction operations like `mod()`. In such cases if the result will be negative - modulo will be added to the result to make it positive ### Postfixes * `n` - the argument of the function must be a plain JavaScript Number. Decimals are not supported. * `rn` - both argument and return value of the function are plain JavaScript Numbers. Decimals are not supported. ### Examples * `a.iadd(b)` - perform addition on `a` and `b`, storing the result in `a` * `a.umod(b)` - reduce `a` modulo `b`, returning positive value * `a.iushln(13)` - shift bits of `a` left by 13 ## Instructions Prefixes/postfixes are put in parens at the of the line. `endian` - could be either `le` (little-endian) or `be` (big-endian). ### Utilities * `a.clone()` - clone number * `a.toString(base, length)` - convert to base-string and pad with zeroes * `a.toNumber()` - convert to Javascript Number (limited to 53 bits) * `a.toJSON()` - convert to JSON compatible hex string (alias of `toString(16)`) * `a.toArray(endian, length)` - convert to byte `Array`, and optionally zero pad to length, throwing if already exceeding * `a.toArrayLike(type, endian, length)` - convert to an instance of `type`, which must behave like an `Array` * `a.toBuffer(endian, length)` - convert to Node.js Buffer (if available). For compatibility with browserify and similar tools, use this instead: `a.toArrayLike(Buffer, endian, length)` * `a.bitLength()` - get number of bits occupied * `a.zeroBits()` - return number of less-significant consequent zero bits (example: `1010000` has 4 zero bits) * `a.byteLength()` - return number of bytes occupied * `a.isNeg()` - true if the number is negative * `a.isEven()` - no comments * `a.isOdd()` - no comments * `a.isZero()` - no comments * `a.cmp(b)` - compare numbers and return `-1` (a `<` b), `0` (a `==` b), or `1` (a `>` b) depending on the comparison result (`ucmp`, `cmpn`) * `a.lt(b)` - `a` less than `b` (`n`) * `a.lte(b)` - `a` less than or equals `b` (`n`) * `a.gt(b)` - `a` greater than `b` (`n`) * `a.gte(b)` - `a` greater than or equals `b` (`n`) * `a.eq(b)` - `a` equals `b` (`n`) * `a.toTwos(width)` - convert to two's complement representation, where `width` is bit width * `a.fromTwos(width)` - convert from two's complement representation, where `width` is the bit width * `BN.isBN(object)` - returns true if the supplied `object` is a BN.js instance * `BN.max(a, b)` - return `a` if `a` bigger than `b` * `BN.min(a, b)` - return `a` if `a` less than `b` ### Arithmetics * `a.neg()` - negate sign (`i`) * `a.abs()` - absolute value (`i`) * `a.add(b)` - addition (`i`, `n`, `in`) * `a.sub(b)` - subtraction (`i`, `n`, `in`) * `a.mul(b)` - multiply (`i`, `n`, `in`) * `a.sqr()` - square (`i`) * `a.pow(b)` - raise `a` to the power of `b` * `a.div(b)` - divide (`divn`, `idivn`) * `a.mod(b)` - reduct (`u`, `n`) (but no `umodn`) * `a.divmod(b)` - quotient and modulus obtained by dividing * `a.divRound(b)` - rounded division ### Bit operations * `a.or(b)` - or (`i`, `u`, `iu`) * `a.and(b)` - and (`i`, `u`, `iu`, `andln`) (NOTE: `andln` is going to be replaced with `andn` in future) * `a.xor(b)` - xor (`i`, `u`, `iu`) * `a.setn(b, value)` - set specified bit to `value` * `a.shln(b)` - shift left (`i`, `u`, `iu`) * `a.shrn(b)` - shift right (`i`, `u`, `iu`) * `a.testn(b)` - test if specified bit is set * `a.maskn(b)` - clear bits with indexes higher or equal to `b` (`i`) * `a.bincn(b)` - add `1 << b` to the number * `a.notn(w)` - not (for the width specified by `w`) (`i`) ### Reduction * `a.gcd(b)` - GCD * `a.egcd(b)` - Extended GCD results (`{ a: ..., b: ..., gcd: ... }`) * `a.invm(b)` - inverse `a` modulo `b` ## Fast reduction When doing lots of reductions using the same modulo, it might be beneficial to use some tricks: like [Montgomery multiplication][0], or using special algorithm for [Mersenne Prime][1]. ### Reduction context To enable this tricks one should create a reduction context: ```js var red = BN.red(num); ``` where `num` is just a BN instance. Or: ```js var red = BN.red(primeName); ``` Where `primeName` is either of these [Mersenne Primes][1]: * `'k256'` * `'p224'` * `'p192'` * `'p25519'` Or: ```js var red = BN.mont(num); ``` To reduce numbers with [Montgomery trick][0]. `.mont()` is generally faster than `.red(num)`, but slower than `BN.red(primeName)`. ### Converting numbers Before performing anything in reduction context - numbers should be converted to it. Usually, this means that one should: * Convert inputs to reducted ones * Operate on them in reduction context * Convert outputs back from the reduction context Here is how one may convert numbers to `red`: ```js var redA = a.toRed(red); ``` Where `red` is a reduction context created using instructions above Here is how to convert them back: ```js var a = redA.fromRed(); ``` ### Red instructions Most of the instructions from the very start of this readme have their counterparts in red context: * `a.redAdd(b)`, `a.redIAdd(b)` * `a.redSub(b)`, `a.redISub(b)` * `a.redShl(num)` * `a.redMul(b)`, `a.redIMul(b)` * `a.redSqr()`, `a.redISqr()` * `a.redSqrt()` - square root modulo reduction context's prime * `a.redInvm()` - modular inverse of the number * `a.redNeg()` * `a.redPow(b)` - modular exponentiation ### Number Size Optimized for elliptic curves that work with 256-bit numbers. There is no limitation on the size of the numbers. ## LICENSE This software is licensed under the MIT License. [0]: https://en.wikipedia.org/wiki/Montgomery_modular_multiplication [1]: https://en.wikipedia.org/wiki/Mersenne_prime # axios // core The modules found in `core/` should be modules that are specific to the domain logic of axios. These modules would most likely not make sense to be consumed outside of the axios module, as their logic is too specific. Some examples of core modules are: - Dispatching requests - Managing interceptors - Handling config # is-glob [](https://www.npmjs.com/package/is-glob) [](https://npmjs.org/package/is-glob) [](https://npmjs.org/package/is-glob) [](https://github.com/micromatch/is-glob/actions) > Returns `true` if the given string looks like a glob pattern or an extglob pattern. This makes it easy to create code that only uses external modules like node-glob when necessary, resulting in much faster code execution and initialization time, and a better user experience. Please consider following this project's author, [Jon Schlinkert](https://github.com/jonschlinkert), and consider starring the project to show your :heart: and support. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save is-glob ``` You might also be interested in [is-valid-glob](https://github.com/jonschlinkert/is-valid-glob) and [has-glob](https://github.com/jonschlinkert/has-glob). ## Usage ```js var isGlob = require('is-glob'); ``` ### Default behavior **True** Patterns that have glob characters or regex patterns will return `true`: ```js isGlob('!foo.js'); isGlob('*.js'); isGlob('**/abc.js'); isGlob('abc/*.js'); isGlob('abc/(aaa|bbb).js'); isGlob('abc/[a-z].js'); isGlob('abc/{a,b}.js'); //=> true ``` Extglobs ```js isGlob('abc/@(a).js'); isGlob('abc/!(a).js'); isGlob('abc/+(a).js'); isGlob('abc/*(a).js'); isGlob('abc/?(a).js'); //=> true ``` **False** Escaped globs or extglobs return `false`: ```js isGlob('abc/\\@(a).js'); isGlob('abc/\\!(a).js'); isGlob('abc/\\+(a).js'); isGlob('abc/\\*(a).js'); isGlob('abc/\\?(a).js'); isGlob('\\!foo.js'); isGlob('\\*.js'); isGlob('\\*\\*/abc.js'); isGlob('abc/\\*.js'); isGlob('abc/\\(aaa|bbb).js'); isGlob('abc/\\[a-z].js'); isGlob('abc/\\{a,b}.js'); //=> false ``` Patterns that do not have glob patterns return `false`: ```js isGlob('abc.js'); isGlob('abc/def/ghi.js'); isGlob('foo.js'); isGlob('abc/@.js'); isGlob('abc/+.js'); isGlob('abc/?.js'); isGlob(); isGlob(null); //=> false ``` Arrays are also `false` (If you want to check if an array has a glob pattern, use [has-glob](https://github.com/jonschlinkert/has-glob)): ```js isGlob(['**/*.js']); isGlob(['foo.js']); //=> false ``` ### Option strict When `options.strict === false` the behavior is less strict in determining if a pattern is a glob. Meaning that some patterns that would return `false` may return `true`. This is done so that matching libraries like [micromatch](https://github.com/micromatch/micromatch) have a chance at determining if the pattern is a glob or not. **True** Patterns that have glob characters or regex patterns will return `true`: ```js isGlob('!foo.js', {strict: false}); isGlob('*.js', {strict: false}); isGlob('**/abc.js', {strict: false}); isGlob('abc/*.js', {strict: false}); isGlob('abc/(aaa|bbb).js', {strict: false}); isGlob('abc/[a-z].js', {strict: false}); isGlob('abc/{a,b}.js', {strict: false}); //=> true ``` Extglobs ```js isGlob('abc/@(a).js', {strict: false}); isGlob('abc/!(a).js', {strict: false}); isGlob('abc/+(a).js', {strict: false}); isGlob('abc/*(a).js', {strict: false}); isGlob('abc/?(a).js', {strict: false}); //=> true ``` **False** Escaped globs or extglobs return `false`: ```js isGlob('\\!foo.js', {strict: false}); isGlob('\\*.js', {strict: false}); isGlob('\\*\\*/abc.js', {strict: false}); isGlob('abc/\\*.js', {strict: false}); isGlob('abc/\\(aaa|bbb).js', {strict: false}); isGlob('abc/\\[a-z].js', {strict: false}); isGlob('abc/\\{a,b}.js', {strict: false}); //=> false ``` ## About <details> <summary><strong>Contributing</strong></summary> Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). </details> <details> <summary><strong>Running Tests</strong></summary> Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` </details> <details> <summary><strong>Building docs</strong></summary> _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` </details> ### Related projects You might also be interested in these projects: * [assemble](https://www.npmjs.com/package/assemble): Get the rocks out of your socks! Assemble makes you fast at creating web projects… [more](https://github.com/assemble/assemble) | [homepage](https://github.com/assemble/assemble "Get the rocks out of your socks! Assemble makes you fast at creating web projects. Assemble is used by thousands of projects for rapid prototyping, creating themes, scaffolds, boilerplates, e-books, UI components, API documentation, blogs, building websit") * [base](https://www.npmjs.com/package/base): Framework for rapidly creating high quality, server-side node.js applications, using plugins like building blocks | [homepage](https://github.com/node-base/base "Framework for rapidly creating high quality, server-side node.js applications, using plugins like building blocks") * [update](https://www.npmjs.com/package/update): Be scalable! Update is a new, open source developer framework and CLI for automating updates… [more](https://github.com/update/update) | [homepage](https://github.com/update/update "Be scalable! Update is a new, open source developer framework and CLI for automating updates of any kind in code projects.") * [verb](https://www.npmjs.com/package/verb): Documentation generator for GitHub projects. Verb is extremely powerful, easy to use, and is used… [more](https://github.com/verbose/verb) | [homepage](https://github.com/verbose/verb "Documentation generator for GitHub projects. Verb is extremely powerful, easy to use, and is used on hundreds of projects of all sizes to generate everything from API docs to readmes.") ### Contributors | **Commits** | **Contributor** | | --- | --- | | 47 | [jonschlinkert](https://github.com/jonschlinkert) | | 5 | [doowb](https://github.com/doowb) | | 1 | [phated](https://github.com/phated) | | 1 | [danhper](https://github.com/danhper) | | 1 | [paulmillr](https://github.com/paulmillr) | ### Author **Jon Schlinkert** * [GitHub Profile](https://github.com/jonschlinkert) * [Twitter Profile](https://twitter.com/jonschlinkert) * [LinkedIn Profile](https://linkedin.com/in/jonschlinkert) ### License Copyright © 2019, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT License](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.8.0, on March 27, 2019._ # cliui [](https://travis-ci.org/yargs/cliui) [](https://coveralls.io/r/yargs/cliui?branch=) [](https://www.npmjs.com/package/cliui) [](https://github.com/conventional-changelog/standard-version) easily create complex multi-column command-line-interfaces. ## Example ```js var ui = require('cliui')() ui.div('Usage: $0 [command] [options]') ui.div({ text: 'Options:', padding: [2, 0, 2, 0] }) ui.div( { text: "-f, --file", width: 20, padding: [0, 4, 0, 4] }, { text: "the file to load." + chalk.green("(if this description is long it wraps).") , width: 20 }, { text: chalk.red("[required]"), align: 'right' } ) console.log(ui.toString()) ``` <img width="500" src="screenshot.png"> ## Layout DSL cliui exposes a simple layout DSL: If you create a single `ui.div`, passing a string rather than an object: * `\n`: characters will be interpreted as new rows. * `\t`: characters will be interpreted as new columns. * `\s`: characters will be interpreted as padding. **as an example...** ```js var ui = require('./')({ width: 60 }) ui.div( 'Usage: node ./bin/foo.js\n' + ' <regex>\t provide a regex\n' + ' <glob>\t provide a glob\t [required]' ) console.log(ui.toString()) ``` **will output:** ```shell Usage: node ./bin/foo.js <regex> provide a regex <glob> provide a glob [required] ``` ## Methods ```js cliui = require('cliui') ``` ### cliui({width: integer}) Specify the maximum width of the UI being generated. If no width is provided, cliui will try to get the current window's width and use it, and if that doesn't work, width will be set to `80`. ### cliui({wrap: boolean}) Enable or disable the wrapping of text in a column. ### cliui.div(column, column, column) Create a row with any number of columns, a column can either be a string, or an object with the following options: * **text:** some text to place in the column. * **width:** the width of a column. * **align:** alignment, `right` or `center`. * **padding:** `[top, right, bottom, left]`. * **border:** should a border be placed around the div? ### cliui.span(column, column, column) Similar to `div`, except the next row will be appended without a new line being created. ### cliui.resetOutput() Resets the UI elements of the current cliui instance, maintaining the values set for `width` and `wrap`. # URI.js URI.js is an [RFC 3986](http://www.ietf.org/rfc/rfc3986.txt) compliant, scheme extendable URI parsing/validating/resolving library for all JavaScript environments (browsers, Node.js, etc). It is also compliant with the IRI ([RFC 3987](http://www.ietf.org/rfc/rfc3987.txt)), IDNA ([RFC 5890](http://www.ietf.org/rfc/rfc5890.txt)), IPv6 Address ([RFC 5952](http://www.ietf.org/rfc/rfc5952.txt)), IPv6 Zone Identifier ([RFC 6874](http://www.ietf.org/rfc/rfc6874.txt)) specifications. URI.js has an extensive test suite, and works in all (Node.js, web) environments. It weighs in at 6.4kb (gzipped, 17kb deflated). ## API ### Parsing URI.parse("uri://user:pass@example.com:123/one/two.three?q1=a1&q2=a2#body"); //returns: //{ // scheme : "uri", // userinfo : "user:pass", // host : "example.com", // port : 123, // path : "/one/two.three", // query : "q1=a1&q2=a2", // fragment : "body" //} ### Serializing URI.serialize({scheme : "http", host : "example.com", fragment : "footer"}) === "http://example.com/#footer" ### Resolving URI.resolve("uri://a/b/c/d?q", "../../g") === "uri://a/g" ### Normalizing URI.normalize("HTTP://ABC.com:80/%7Esmith/home.html") === "http://abc.com/~smith/home.html" ### Comparison URI.equal("example://a/b/c/%7Bfoo%7D", "eXAMPLE://a/./b/../b/%63/%7bfoo%7d") === true ### IP Support //IPv4 normalization URI.normalize("//192.068.001.000") === "//192.68.1.0" //IPv6 normalization URI.normalize("//[2001:0:0DB8::0:0001]") === "//[2001:0:db8::1]" //IPv6 zone identifier support URI.parse("//[2001:db8::7%25en1]"); //returns: //{ // host : "2001:db8::7%en1" //} ### IRI Support //convert IRI to URI URI.serialize(URI.parse("http://examplé.org/rosé")) === "http://xn--exampl-gva.org/ros%C3%A9" //convert URI to IRI URI.serialize(URI.parse("http://xn--exampl-gva.org/ros%C3%A9"), {iri:true}) === "http://examplé.org/rosé" ### Options All of the above functions can accept an additional options argument that is an object that can contain one or more of the following properties: * `scheme` (string) Indicates the scheme that the URI should be treated as, overriding the URI's normal scheme parsing behavior. * `reference` (string) If set to `"suffix"`, it indicates that the URI is in the suffix format, and the validator will use the option's `scheme` property to determine the URI's scheme. * `tolerant` (boolean, false) If set to `true`, the parser will relax URI resolving rules. * `absolutePath` (boolean, false) If set to `true`, the serializer will not resolve a relative `path` component. * `iri` (boolean, false) If set to `true`, the serializer will unescape non-ASCII characters as per [RFC 3987](http://www.ietf.org/rfc/rfc3987.txt). * `unicodeSupport` (boolean, false) If set to `true`, the parser will unescape non-ASCII characters in the parsed output as per [RFC 3987](http://www.ietf.org/rfc/rfc3987.txt). * `domainHost` (boolean, false) If set to `true`, the library will treat the `host` component as a domain name, and convert IDNs (International Domain Names) as per [RFC 5891](http://www.ietf.org/rfc/rfc5891.txt). ## Scheme Extendable URI.js supports inserting custom [scheme](http://en.wikipedia.org/wiki/URI_scheme) dependent processing rules. Currently, URI.js has built in support for the following schemes: * http \[[RFC 2616](http://www.ietf.org/rfc/rfc2616.txt)\] * https \[[RFC 2818](http://www.ietf.org/rfc/rfc2818.txt)\] * ws \[[RFC 6455](http://www.ietf.org/rfc/rfc6455.txt)\] * wss \[[RFC 6455](http://www.ietf.org/rfc/rfc6455.txt)\] * mailto \[[RFC 6068](http://www.ietf.org/rfc/rfc6068.txt)\] * urn \[[RFC 2141](http://www.ietf.org/rfc/rfc2141.txt)\] * urn:uuid \[[RFC 4122](http://www.ietf.org/rfc/rfc4122.txt)\] ### HTTP/HTTPS Support URI.equal("HTTP://ABC.COM:80", "http://abc.com/") === true URI.equal("https://abc.com", "HTTPS://ABC.COM:443/") === true ### WS/WSS Support URI.parse("wss://example.com/foo?bar=baz"); //returns: //{ // scheme : "wss", // host: "example.com", // resourceName: "/foo?bar=baz", // secure: true, //} URI.equal("WS://ABC.COM:80/chat#one", "ws://abc.com/chat") === true ### Mailto Support URI.parse("mailto:alpha@example.com,bravo@example.com?subject=SUBSCRIBE&body=Sign%20me%20up!"); //returns: //{ // scheme : "mailto", // to : ["alpha@example.com", "bravo@example.com"], // subject : "SUBSCRIBE", // body : "Sign me up!" //} URI.serialize({ scheme : "mailto", to : ["alpha@example.com"], subject : "REMOVE", body : "Please remove me", headers : { cc : "charlie@example.com" } }) === "mailto:alpha@example.com?cc=charlie@example.com&subject=REMOVE&body=Please%20remove%20me" ### URN Support URI.parse("urn:example:foo"); //returns: //{ // scheme : "urn", // nid : "example", // nss : "foo", //} #### URN UUID Support URI.parse("urn:uuid:f81d4fae-7dec-11d0-a765-00a0c91e6bf6"); //returns: //{ // scheme : "urn", // nid : "uuid", // uuid : "f81d4fae-7dec-11d0-a765-00a0c91e6bf6", //} ## Usage To load in a browser, use the following tag: <script type="text/javascript" src="uri-js/dist/es5/uri.all.min.js"></script> To load in a CommonJS/Module environment, first install with npm/yarn by running on the command line: npm install uri-js # OR yarn add uri-js Then, in your code, load it using: const URI = require("uri-js"); If you are writing your code in ES6+ (ESNEXT) or TypeScript, you would load it using: import * as URI from "uri-js"; Or you can load just what you need using named exports: import { parse, serialize, resolve, resolveComponents, normalize, equal, removeDotSegments, pctEncChar, pctDecChars, escapeComponent, unescapeComponent } from "uri-js"; ## Breaking changes ### Breaking changes from 3.x URN parsing has been completely changed to better align with the specification. Scheme is now always `urn`, but has two new properties: `nid` which contains the Namspace Identifier, and `nss` which contains the Namespace Specific String. The `nss` property will be removed by higher order scheme handlers, such as the UUID URN scheme handler. The UUID of a URN can now be found in the `uuid` property. ### Breaking changes from 2.x URI validation has been removed as it was slow, exposed a vulnerabilty, and was generally not useful. ### Breaking changes from 1.x The `errors` array on parsed components is now an `error` string. # base-x [](https://www.npmjs.org/package/base-x) [](https://travis-ci.org/cryptocoinjs/base-x) [](https://github.com/feross/standard) Fast base encoding / decoding of any given alphabet using bitcoin style leading zero compression. **WARNING:** This module is **NOT RFC3548** compliant, it cannot be used for base16 (hex), base32, or base64 encoding in a standards compliant manner. ## Example Base58 ``` javascript var BASE58 = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz' var bs58 = require('base-x')(BASE58) var decoded = bs58.decode('5Kd3NBUAdUnhyzenEwVLy9pBKxSwXvE9FMPyR4UKZvpe6E3AgLr') console.log(decoded) // => <Buffer 80 ed db dc 11 68 f1 da ea db d3 e4 4c 1e 3f 8f 5a 28 4c 20 29 f7 8a d2 6a f9 85 83 a4 99 de 5b 19> console.log(bs58.encode(decoded)) // => 5Kd3NBUAdUnhyzenEwVLy9pBKxSwXvE9FMPyR4UKZvpe6E3AgLr ``` ### Alphabets See below for a list of commonly recognized alphabets, and their respective base. Base | Alphabet ------------- | ------------- 2 | `01` 8 | `01234567` 11 | `0123456789a` 16 | `0123456789abcdef` 32 | `0123456789ABCDEFGHJKMNPQRSTVWXYZ` 32 | `ybndrfg8ejkmcpqxot1uwisza345h769` (z-base-32) 36 | `0123456789abcdefghijklmnopqrstuvwxyz` 58 | `123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz` 62 | `0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ` 64 | `ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/` 67 | `ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_.!~` ## How it works It encodes octet arrays by doing long divisions on all significant digits in the array, creating a representation of that number in the new base. Then for every leading zero in the input (not significant as a number) it will encode as a single leader character. This is the first in the alphabet and will decode as 8 bits. The other characters depend upon the base. For example, a base58 alphabet packs roughly 5.858 bits per character. This means the encoded string 000f (using a base16, 0-f alphabet) will actually decode to 4 bytes unlike a canonical hex encoding which uniformly packs 4 bits into each character. While unusual, this does mean that no padding is required and it works for bases like 43. ## LICENSE [MIT](LICENSE) A direct derivation of the base58 implementation from [`bitcoin/bitcoin`](https://github.com/bitcoin/bitcoin/blob/f1e2f2a85962c1664e4e55471061af0eaa798d40/src/base58.cpp), generalized for variable length alphabets. # cross-spawn [![NPM version][npm-image]][npm-url] [![Downloads][downloads-image]][npm-url] [![Build Status][travis-image]][travis-url] [![Build status][appveyor-image]][appveyor-url] [![Coverage Status][codecov-image]][codecov-url] [![Dependency status][david-dm-image]][david-dm-url] [![Dev Dependency status][david-dm-dev-image]][david-dm-dev-url] [npm-url]:https://npmjs.org/package/cross-spawn [downloads-image]:https://img.shields.io/npm/dm/cross-spawn.svg [npm-image]:https://img.shields.io/npm/v/cross-spawn.svg [travis-url]:https://travis-ci.org/moxystudio/node-cross-spawn [travis-image]:https://img.shields.io/travis/moxystudio/node-cross-spawn/master.svg [appveyor-url]:https://ci.appveyor.com/project/satazor/node-cross-spawn [appveyor-image]:https://img.shields.io/appveyor/ci/satazor/node-cross-spawn/master.svg [codecov-url]:https://codecov.io/gh/moxystudio/node-cross-spawn [codecov-image]:https://img.shields.io/codecov/c/github/moxystudio/node-cross-spawn/master.svg [david-dm-url]:https://david-dm.org/moxystudio/node-cross-spawn [david-dm-image]:https://img.shields.io/david/moxystudio/node-cross-spawn.svg [david-dm-dev-url]:https://david-dm.org/moxystudio/node-cross-spawn?type=dev [david-dm-dev-image]:https://img.shields.io/david/dev/moxystudio/node-cross-spawn.svg A cross platform solution to node's spawn and spawnSync. ## Installation Node.js version 8 and up: `$ npm install cross-spawn` Node.js version 7 and under: `$ npm install cross-spawn@6` ## Why Node has issues when using spawn on Windows: - It ignores [PATHEXT](https://github.com/joyent/node/issues/2318) - It does not support [shebangs](https://en.wikipedia.org/wiki/Shebang_(Unix)) - Has problems running commands with [spaces](https://github.com/nodejs/node/issues/7367) - Has problems running commands with posix relative paths (e.g.: `./my-folder/my-executable`) - Has an [issue](https://github.com/moxystudio/node-cross-spawn/issues/82) with command shims (files in `node_modules/.bin/`), where arguments with quotes and parenthesis would result in [invalid syntax error](https://github.com/moxystudio/node-cross-spawn/blob/e77b8f22a416db46b6196767bcd35601d7e11d54/test/index.test.js#L149) - No `options.shell` support on node `<v4.8` All these issues are handled correctly by `cross-spawn`. There are some known modules, such as [win-spawn](https://github.com/ForbesLindesay/win-spawn), that try to solve this but they are either broken or provide faulty escaping of shell arguments. ## Usage Exactly the same way as node's [`spawn`](https://nodejs.org/api/child_process.html#child_process_child_process_spawn_command_args_options) or [`spawnSync`](https://nodejs.org/api/child_process.html#child_process_child_process_spawnsync_command_args_options), so it's a drop in replacement. ```js const spawn = require('cross-spawn'); // Spawn NPM asynchronously const child = spawn('npm', ['list', '-g', '-depth', '0'], { stdio: 'inherit' }); // Spawn NPM synchronously const result = spawn.sync('npm', ['list', '-g', '-depth', '0'], { stdio: 'inherit' }); ``` ## Caveats ### Using `options.shell` as an alternative to `cross-spawn` Starting from node `v4.8`, `spawn` has a `shell` option that allows you run commands from within a shell. This new option solves the [PATHEXT](https://github.com/joyent/node/issues/2318) issue but: - It's not supported in node `<v4.8` - You must manually escape the command and arguments which is very error prone, specially when passing user input - There are a lot of other unresolved issues from the [Why](#why) section that you must take into account If you are using the `shell` option to spawn a command in a cross platform way, consider using `cross-spawn` instead. You have been warned. ### `options.shell` support While `cross-spawn` adds support for `options.shell` in node `<v4.8`, all of its enhancements are disabled. This mimics the Node.js behavior. More specifically, the command and its arguments will not be automatically escaped nor shebang support will be offered. This is by design because if you are using `options.shell` you are probably targeting a specific platform anyway and you don't want things to get into your way. ### Shebangs support While `cross-spawn` handles shebangs on Windows, its support is limited. More specifically, it just supports `#!/usr/bin/env <program>` where `<program>` must not contain any arguments. If you would like to have the shebang support improved, feel free to contribute via a pull-request. Remember to always test your code on Windows! ## Tests `$ npm test` `$ npm test -- --watch` during development ## License Released under the [MIT License](https://www.opensource.org/licenses/mit-license.php). # yallist Yet Another Linked List There are many doubly-linked list implementations like it, but this one is mine. For when an array would be too big, and a Map can't be iterated in reverse order. [](https://travis-ci.org/isaacs/yallist) [](https://coveralls.io/github/isaacs/yallist) ## basic usage ```javascript var yallist = require('yallist') var myList = yallist.create([1, 2, 3]) myList.push('foo') myList.unshift('bar') // of course pop() and shift() are there, too console.log(myList.toArray()) // ['bar', 1, 2, 3, 'foo'] myList.forEach(function (k) { // walk the list head to tail }) myList.forEachReverse(function (k, index, list) { // walk the list tail to head }) var myDoubledList = myList.map(function (k) { return k + k }) // now myDoubledList contains ['barbar', 2, 4, 6, 'foofoo'] // mapReverse is also a thing var myDoubledListReverse = myList.mapReverse(function (k) { return k + k }) // ['foofoo', 6, 4, 2, 'barbar'] var reduced = myList.reduce(function (set, entry) { set += entry return set }, 'start') console.log(reduced) // 'startfoo123bar' ``` ## api The whole API is considered "public". Functions with the same name as an Array method work more or less the same way. There's reverse versions of most things because that's the point. ### Yallist Default export, the class that holds and manages a list. Call it with either a forEach-able (like an array) or a set of arguments, to initialize the list. The Array-ish methods all act like you'd expect. No magic length, though, so if you change that it won't automatically prune or add empty spots. ### Yallist.create(..) Alias for Yallist function. Some people like factories. #### yallist.head The first node in the list #### yallist.tail The last node in the list #### yallist.length The number of nodes in the list. (Change this at your peril. It is not magic like Array length.) #### yallist.toArray() Convert the list to an array. #### yallist.forEach(fn, [thisp]) Call a function on each item in the list. #### yallist.forEachReverse(fn, [thisp]) Call a function on each item in the list, in reverse order. #### yallist.get(n) Get the data at position `n` in the list. If you use this a lot, probably better off just using an Array. #### yallist.getReverse(n) Get the data at position `n`, counting from the tail. #### yallist.map(fn, thisp) Create a new Yallist with the result of calling the function on each item. #### yallist.mapReverse(fn, thisp) Same as `map`, but in reverse. #### yallist.pop() Get the data from the list tail, and remove the tail from the list. #### yallist.push(item, ...) Insert one or more items to the tail of the list. #### yallist.reduce(fn, initialValue) Like Array.reduce. #### yallist.reduceReverse Like Array.reduce, but in reverse. #### yallist.reverse Reverse the list in place. #### yallist.shift() Get the data from the list head, and remove the head from the list. #### yallist.slice([from], [to]) Just like Array.slice, but returns a new Yallist. #### yallist.sliceReverse([from], [to]) Just like yallist.slice, but the result is returned in reverse. #### yallist.toArray() Create an array representation of the list. #### yallist.toArrayReverse() Create a reversed array representation of the list. #### yallist.unshift(item, ...) Insert one or more items to the head of the list. #### yallist.unshiftNode(node) Move a Node object to the front of the list. (That is, pull it out of wherever it lives, and make it the new head.) If the node belongs to a different list, then that list will remove it first. #### yallist.pushNode(node) Move a Node object to the end of the list. (That is, pull it out of wherever it lives, and make it the new tail.) If the node belongs to a list already, then that list will remove it first. #### yallist.removeNode(node) Remove a node from the list, preserving referential integrity of head and tail and other nodes. Will throw an error if you try to have a list remove a node that doesn't belong to it. ### Yallist.Node The class that holds the data and is actually the list. Call with `var n = new Node(value, previousNode, nextNode)` Note that if you do direct operations on Nodes themselves, it's very easy to get into weird states where the list is broken. Be careful :) #### node.next The next node in the list. #### node.prev The previous node in the list. #### node.value The data the node contains. #### node.list The list to which this node belongs. (Null if it does not belong to any list.) # lodash.truncate v4.4.2 The [lodash](https://lodash.com/) method `_.truncate` exported as a [Node.js](https://nodejs.org/) module. ## Installation Using npm: ```bash $ {sudo -H} npm i -g npm $ npm i --save lodash.truncate ``` In Node.js: ```js var truncate = require('lodash.truncate'); ``` See the [documentation](https://lodash.com/docs#truncate) or [package source](https://github.com/lodash/lodash/blob/4.4.2-npm-packages/lodash.truncate) for more details. # near-sdk-core This package contain a convenient interface for interacting with NEAR's host runtime. To see the functions that are provided by the host node see [`env.ts`](./assembly/env/env.ts). ## Follow Redirects Drop-in replacement for Nodes `http` and `https` that automatically follows redirects. [](https://www.npmjs.com/package/follow-redirects) [](https://travis-ci.org/follow-redirects/follow-redirects) [](https://coveralls.io/r/follow-redirects/follow-redirects?branch=master) [](https://david-dm.org/follow-redirects/follow-redirects) [](https://www.npmjs.com/package/follow-redirects) `follow-redirects` provides [request](https://nodejs.org/api/http.html#http_http_request_options_callback) and [get](https://nodejs.org/api/http.html#http_http_get_options_callback) methods that behave identically to those found on the native [http](https://nodejs.org/api/http.html#http_http_request_options_callback) and [https](https://nodejs.org/api/https.html#https_https_request_options_callback) modules, with the exception that they will seamlessly follow redirects. ```javascript var http = require('follow-redirects').http; var https = require('follow-redirects').https; http.get('http://bit.ly/900913', function (response) { response.on('data', function (chunk) { console.log(chunk); }); }).on('error', function (err) { console.error(err); }); ``` You can inspect the final redirected URL through the `responseUrl` property on the `response`. If no redirection happened, `responseUrl` is the original request URL. ```javascript https.request({ host: 'bitly.com', path: '/UHfDGO', }, function (response) { console.log(response.responseUrl); // 'http://duckduckgo.com/robots.txt' }); ``` ## Options ### Global options Global options are set directly on the `follow-redirects` module: ```javascript var followRedirects = require('follow-redirects'); followRedirects.maxRedirects = 10; followRedirects.maxBodyLength = 20 * 1024 * 1024; // 20 MB ``` The following global options are supported: - `maxRedirects` (default: `21`) – sets the maximum number of allowed redirects; if exceeded, an error will be emitted. - `maxBodyLength` (default: 10MB) – sets the maximum size of the request body; if exceeded, an error will be emitted. ### Per-request options Per-request options are set by passing an `options` object: ```javascript var url = require('url'); var followRedirects = require('follow-redirects'); var options = url.parse('http://bit.ly/900913'); options.maxRedirects = 10; http.request(options); ``` In addition to the [standard HTTP](https://nodejs.org/api/http.html#http_http_request_options_callback) and [HTTPS options](https://nodejs.org/api/https.html#https_https_request_options_callback), the following per-request options are supported: - `followRedirects` (default: `true`) – whether redirects should be followed. - `maxRedirects` (default: `21`) – sets the maximum number of allowed redirects; if exceeded, an error will be emitted. - `maxBodyLength` (default: 10MB) – sets the maximum size of the request body; if exceeded, an error will be emitted. - `agents` (default: `undefined`) – sets the `agent` option per protocol, since HTTP and HTTPS use different agents. Example value: `{ http: new http.Agent(), https: new https.Agent() }` - `trackRedirects` (default: `false`) – whether to store the redirected response details into the `redirects` array on the response object. ### Advanced usage By default, `follow-redirects` will use the Node.js default implementations of [`http`](https://nodejs.org/api/http.html) and [`https`](https://nodejs.org/api/https.html). To enable features such as caching and/or intermediate request tracking, you might instead want to wrap `follow-redirects` around custom protocol implementations: ```javascript var followRedirects = require('follow-redirects').wrap({ http: require('your-custom-http'), https: require('your-custom-https'), }); ``` Such custom protocols only need an implementation of the `request` method. ## Browserify Usage Due to the way `XMLHttpRequest` works, the `browserify` versions of `http` and `https` already follow redirects. If you are *only* targeting the browser, then this library has little value for you. If you want to write cross platform code for node and the browser, `follow-redirects` provides a great solution for making the native node modules behave the same as they do in browserified builds in the browser. To avoid bundling unnecessary code you should tell browserify to swap out `follow-redirects` with the standard modules when bundling. To make this easier, you need to change how you require the modules: ```javascript var http = require('follow-redirects/http'); var https = require('follow-redirects/https'); ``` You can then replace `follow-redirects` in your browserify configuration like so: ```javascript "browser": { "follow-redirects/http" : "http", "follow-redirects/https" : "https" } ``` The `browserify-http` module has not kept pace with node development, and no long behaves identically to the native module when running in the browser. If you are experiencing problems, you may want to check out [browserify-http-2](https://www.npmjs.com/package/http-browserify-2). It is more actively maintained and attempts to address a few of the shortcomings of `browserify-http`. In that case, your browserify config should look something like this: ```javascript "browser": { "follow-redirects/http" : "browserify-http-2/http", "follow-redirects/https" : "browserify-http-2/https" } ``` ## Contributing Pull Requests are always welcome. Please [file an issue](https://github.com/follow-redirects/follow-redirects/issues) detailing your proposal before you invest your valuable time. Additional features and bug fixes should be accompanied by tests. You can run the test suite locally with a simple `npm test` command. ## Debug Logging `follow-redirects` uses the excellent [debug](https://www.npmjs.com/package/debug) for logging. To turn on logging set the environment variable `DEBUG=follow-redirects` for debug output from just this module. When running the test suite it is sometimes advantageous to set `DEBUG=*` to see output from the express server as well. ## Authors - Olivier Lalonde (olalonde@gmail.com) - James Talmage (james@talmage.io) - [Ruben Verborgh](https://ruben.verborgh.org/) ## License [https://github.com/follow-redirects/follow-redirects/blob/master/LICENSE](MIT License) # emoji-regex [](https://travis-ci.org/mathiasbynens/emoji-regex) _emoji-regex_ offers a regular expression to match all emoji symbols (including textual representations of emoji) as per the Unicode Standard. This repository contains a script that generates this regular expression based on [the data from Unicode v12](https://github.com/mathiasbynens/unicode-12.0.0). Because of this, the regular expression can easily be updated whenever new emoji are added to the Unicode standard. ## Installation Via [npm](https://www.npmjs.com/): ```bash npm install emoji-regex ``` In [Node.js](https://nodejs.org/): ```js const emojiRegex = require('emoji-regex'); // Note: because the regular expression has the global flag set, this module // exports a function that returns the regex rather than exporting the regular // expression itself, to make it impossible to (accidentally) mutate the // original regular expression. const text = ` \u{231A}: ⌚ default emoji presentation character (Emoji_Presentation) \u{2194}\u{FE0F}: ↔️ default text presentation character rendered as emoji \u{1F469}: 👩 emoji modifier base (Emoji_Modifier_Base) \u{1F469}\u{1F3FF}: 👩🏿 emoji modifier base followed by a modifier `; const regex = emojiRegex(); let match; while (match = regex.exec(text)) { const emoji = match[0]; console.log(`Matched sequence ${ emoji } — code points: ${ [...emoji].length }`); } ``` Console output: ``` Matched sequence ⌚ — code points: 1 Matched sequence ⌚ — code points: 1 Matched sequence ↔️ — code points: 2 Matched sequence ↔️ — code points: 2 Matched sequence 👩 — code points: 1 Matched sequence 👩 — code points: 1 Matched sequence 👩🏿 — code points: 2 Matched sequence 👩🏿 — code points: 2 ``` To match emoji in their textual representation as well (i.e. emoji that are not `Emoji_Presentation` symbols and that aren’t forced to render as emoji by a variation selector), `require` the other regex: ```js const emojiRegex = require('emoji-regex/text.js'); ``` Additionally, in environments which support ES2015 Unicode escapes, you may `require` ES2015-style versions of the regexes: ```js const emojiRegex = require('emoji-regex/es2015/index.js'); const emojiRegexText = require('emoji-regex/es2015/text.js'); ``` ## Author | [](https://twitter.com/mathias "Follow @mathias on Twitter") | |---| | [Mathias Bynens](https://mathiasbynens.be/) | ## License _emoji-regex_ is available under the [MIT](https://mths.be/mit) license. JS-YAML - YAML 1.2 parser / writer for JavaScript ================================================= [](https://travis-ci.org/nodeca/js-yaml) [](https://www.npmjs.org/package/js-yaml) __[Online Demo](http://nodeca.github.com/js-yaml/)__ This is an implementation of [YAML](http://yaml.org/), a human-friendly data serialization language. Started as [PyYAML](http://pyyaml.org/) port, it was completely rewritten from scratch. Now it's very fast, and supports 1.2 spec. Installation ------------ ### YAML module for node.js ``` npm install js-yaml ``` ### CLI executable If you want to inspect your YAML files from CLI, install js-yaml globally: ``` npm install -g js-yaml ``` #### Usage ``` usage: js-yaml [-h] [-v] [-c] [-t] file Positional arguments: file File with YAML document(s) Optional arguments: -h, --help Show this help message and exit. -v, --version Show program's version number and exit. -c, --compact Display errors in compact mode -t, --trace Show stack trace on error ``` ### Bundled YAML library for browsers ``` html <!-- esprima required only for !!js/function --> <script src="esprima.js"></script> <script src="js-yaml.min.js"></script> <script type="text/javascript"> var doc = jsyaml.load('greeting: hello\nname: world'); </script> ``` Browser support was done mostly for the online demo. If you find any errors - feel free to send pull requests with fixes. Also note, that IE and other old browsers needs [es5-shims](https://github.com/kriskowal/es5-shim) to operate. Notes: 1. We have no resources to support browserified version. Don't expect it to be well tested. Don't expect fast fixes if something goes wrong there. 2. `!!js/function` in browser bundle will not work by default. If you really need it - load `esprima` parser first (via amd or directly). 3. `!!bin` in browser will return `Array`, because browsers do not support node.js `Buffer` and adding Buffer shims is completely useless on practice. API --- Here we cover the most 'useful' methods. If you need advanced details (creating your own tags), see [wiki](https://github.com/nodeca/js-yaml/wiki) and [examples](https://github.com/nodeca/js-yaml/tree/master/examples) for more info. ``` javascript const yaml = require('js-yaml'); const fs = require('fs'); // Get document, or throw exception on error try { const doc = yaml.safeLoad(fs.readFileSync('/home/ixti/example.yml', 'utf8')); console.log(doc); } catch (e) { console.log(e); } ``` ### safeLoad (string [ , options ]) **Recommended loading way.** Parses `string` as single YAML document. Returns either a plain object, a string or `undefined`, or throws `YAMLException` on error. By default, does not support regexps, functions and undefined. This method is safe for untrusted data. options: - `filename` _(default: null)_ - string to be used as a file path in error/warning messages. - `onWarning` _(default: null)_ - function to call on warning messages. Loader will call this function with an instance of `YAMLException` for each warning. - `schema` _(default: `DEFAULT_SAFE_SCHEMA`)_ - specifies a schema to use. - `FAILSAFE_SCHEMA` - only strings, arrays and plain objects: http://www.yaml.org/spec/1.2/spec.html#id2802346 - `JSON_SCHEMA` - all JSON-supported types: http://www.yaml.org/spec/1.2/spec.html#id2803231 - `CORE_SCHEMA` - same as `JSON_SCHEMA`: http://www.yaml.org/spec/1.2/spec.html#id2804923 - `DEFAULT_SAFE_SCHEMA` - all supported YAML types, without unsafe ones (`!!js/undefined`, `!!js/regexp` and `!!js/function`): http://yaml.org/type/ - `DEFAULT_FULL_SCHEMA` - all supported YAML types. - `json` _(default: false)_ - compatibility with JSON.parse behaviour. If true, then duplicate keys in a mapping will override values rather than throwing an error. NOTE: This function **does not** understand multi-document sources, it throws exception on those. NOTE: JS-YAML **does not** support schema-specific tag resolution restrictions. So, the JSON schema is not as strictly defined in the YAML specification. It allows numbers in any notation, use `Null` and `NULL` as `null`, etc. The core schema also has no such restrictions. It allows binary notation for integers. ### load (string [ , options ]) **Use with care with untrusted sources**. The same as `safeLoad()` but uses `DEFAULT_FULL_SCHEMA` by default - adds some JavaScript-specific types: `!!js/function`, `!!js/regexp` and `!!js/undefined`. For untrusted sources, you must additionally validate object structure to avoid injections: ``` javascript const untrusted_code = '"toString": !<tag:yaml.org,2002:js/function> "function (){very_evil_thing();}"'; // I'm just converting that string, what could possibly go wrong? require('js-yaml').load(untrusted_code) + '' ``` ### safeLoadAll (string [, iterator] [, options ]) Same as `safeLoad()`, but understands multi-document sources. Applies `iterator` to each document if specified, or returns array of documents. ``` javascript const yaml = require('js-yaml'); yaml.safeLoadAll(data, function (doc) { console.log(doc); }); ``` ### loadAll (string [, iterator] [ , options ]) Same as `safeLoadAll()` but uses `DEFAULT_FULL_SCHEMA` by default. ### safeDump (object [ , options ]) Serializes `object` as a YAML document. Uses `DEFAULT_SAFE_SCHEMA`, so it will throw an exception if you try to dump regexps or functions. However, you can disable exceptions by setting the `skipInvalid` option to `true`. options: - `indent` _(default: 2)_ - indentation width to use (in spaces). - `noArrayIndent` _(default: false)_ - when true, will not add an indentation level to array elements - `skipInvalid` _(default: false)_ - do not throw on invalid types (like function in the safe schema) and skip pairs and single values with such types. - `flowLevel` (default: -1) - specifies level of nesting, when to switch from block to flow style for collections. -1 means block style everwhere - `styles` - "tag" => "style" map. Each tag may have own set of styles. - `schema` _(default: `DEFAULT_SAFE_SCHEMA`)_ specifies a schema to use. - `sortKeys` _(default: `false`)_ - if `true`, sort keys when dumping YAML. If a function, use the function to sort the keys. - `lineWidth` _(default: `80`)_ - set max line width. - `noRefs` _(default: `false`)_ - if `true`, don't convert duplicate objects into references - `noCompatMode` _(default: `false`)_ - if `true` don't try to be compatible with older yaml versions. Currently: don't quote "yes", "no" and so on, as required for YAML 1.1 - `condenseFlow` _(default: `false`)_ - if `true` flow sequences will be condensed, omitting the space between `a, b`. Eg. `'[a,b]'`, and omitting the space between `key: value` and quoting the key. Eg. `'{"a":b}'` Can be useful when using yaml for pretty URL query params as spaces are %-encoded. The following table show availlable styles (e.g. "canonical", "binary"...) available for each tag (.e.g. !!null, !!int ...). Yaml output is shown on the right side after `=>` (default setting) or `->`: ``` none !!null "canonical" -> "~" "lowercase" => "null" "uppercase" -> "NULL" "camelcase" -> "Null" !!int "binary" -> "0b1", "0b101010", "0b1110001111010" "octal" -> "01", "052", "016172" "decimal" => "1", "42", "7290" "hexadecimal" -> "0x1", "0x2A", "0x1C7A" !!bool "lowercase" => "true", "false" "uppercase" -> "TRUE", "FALSE" "camelcase" -> "True", "False" !!float "lowercase" => ".nan", '.inf' "uppercase" -> ".NAN", '.INF' "camelcase" -> ".NaN", '.Inf' ``` Example: ``` javascript safeDump (object, { 'styles': { '!!null': 'canonical' // dump null as ~ }, 'sortKeys': true // sort object keys }); ``` ### dump (object [ , options ]) Same as `safeDump()` but without limits (uses `DEFAULT_FULL_SCHEMA` by default). Supported YAML types -------------------- The list of standard YAML tags and corresponding JavaScipt types. See also [YAML tag discussion](http://pyyaml.org/wiki/YAMLTagDiscussion) and [YAML types repository](http://yaml.org/type/). ``` !!null '' # null !!bool 'yes' # bool !!int '3...' # number !!float '3.14...' # number !!binary '...base64...' # buffer !!timestamp 'YYYY-...' # date !!omap [ ... ] # array of key-value pairs !!pairs [ ... ] # array or array pairs !!set { ... } # array of objects with given keys and null values !!str '...' # string !!seq [ ... ] # array !!map { ... } # object ``` **JavaScript-specific tags** ``` !!js/regexp /pattern/gim # RegExp !!js/undefined '' # Undefined !!js/function 'function () {...}' # Function ``` Caveats ------- Note, that you use arrays or objects as key in JS-YAML. JS does not allow objects or arrays as keys, and stringifies (by calling `toString()` method) them at the moment of adding them. ``` yaml --- ? [ foo, bar ] : - baz ? { foo: bar } : - baz - baz ``` ``` javascript { "foo,bar": ["baz"], "[object Object]": ["baz", "baz"] } ``` Also, reading of properties on implicit block mapping keys is not supported yet. So, the following YAML document cannot be loaded. ``` yaml &anchor foo: foo: bar *anchor: duplicate key baz: bat *anchor: duplicate key ``` js-yaml for enterprise ---------------------- Available as part of the Tidelift Subscription The maintainers of js-yaml and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. [Learn more.](https://tidelift.com/subscription/pkg/npm-js-yaml?utm_source=npm-js-yaml&utm_medium=referral&utm_campaign=enterprise&utm_term=repo) # jsdiff [](http://travis-ci.org/kpdecker/jsdiff) [](https://saucelabs.com/u/jsdiff) A javascript text differencing implementation. Based on the algorithm proposed in ["An O(ND) Difference Algorithm and its Variations" (Myers, 1986)](http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.4.6927). ## Installation ```bash npm install diff --save ``` ## API * `Diff.diffChars(oldStr, newStr[, options])` - diffs two blocks of text, comparing character by character. Returns a list of change objects (See below). Options * `ignoreCase`: `true` to ignore casing difference. Defaults to `false`. * `Diff.diffWords(oldStr, newStr[, options])` - diffs two blocks of text, comparing word by word, ignoring whitespace. Returns a list of change objects (See below). Options * `ignoreCase`: Same as in `diffChars`. * `Diff.diffWordsWithSpace(oldStr, newStr[, options])` - diffs two blocks of text, comparing word by word, treating whitespace as significant. Returns a list of change objects (See below). * `Diff.diffLines(oldStr, newStr[, options])` - diffs two blocks of text, comparing line by line. Options * `ignoreWhitespace`: `true` to ignore leading and trailing whitespace. This is the same as `diffTrimmedLines` * `newlineIsToken`: `true` to treat newline characters as separate tokens. This allows for changes to the newline structure to occur independently of the line content and to be treated as such. In general this is the more human friendly form of `diffLines` and `diffLines` is better suited for patches and other computer friendly output. Returns a list of change objects (See below). * `Diff.diffTrimmedLines(oldStr, newStr[, options])` - diffs two blocks of text, comparing line by line, ignoring leading and trailing whitespace. Returns a list of change objects (See below). * `Diff.diffSentences(oldStr, newStr[, options])` - diffs two blocks of text, comparing sentence by sentence. Returns a list of change objects (See below). * `Diff.diffCss(oldStr, newStr[, options])` - diffs two blocks of text, comparing CSS tokens. Returns a list of change objects (See below). * `Diff.diffJson(oldObj, newObj[, options])` - diffs two JSON objects, comparing the fields defined on each. The order of fields, etc does not matter in this comparison. Returns a list of change objects (See below). * `Diff.diffArrays(oldArr, newArr[, options])` - diffs two arrays, comparing each item for strict equality (===). Options * `comparator`: `function(left, right)` for custom equality checks Returns a list of change objects (See below). * `Diff.createTwoFilesPatch(oldFileName, newFileName, oldStr, newStr, oldHeader, newHeader)` - creates a unified diff patch. Parameters: * `oldFileName` : String to be output in the filename section of the patch for the removals * `newFileName` : String to be output in the filename section of the patch for the additions * `oldStr` : Original string value * `newStr` : New string value * `oldHeader` : Additional information to include in the old file header * `newHeader` : Additional information to include in the new file header * `options` : An object with options. Currently, only `context` is supported and describes how many lines of context should be included. * `Diff.createPatch(fileName, oldStr, newStr, oldHeader, newHeader)` - creates a unified diff patch. Just like Diff.createTwoFilesPatch, but with oldFileName being equal to newFileName. * `Diff.structuredPatch(oldFileName, newFileName, oldStr, newStr, oldHeader, newHeader, options)` - returns an object with an array of hunk objects. This method is similar to createTwoFilesPatch, but returns a data structure suitable for further processing. Parameters are the same as createTwoFilesPatch. The data structure returned may look like this: ```js { oldFileName: 'oldfile', newFileName: 'newfile', oldHeader: 'header1', newHeader: 'header2', hunks: [{ oldStart: 1, oldLines: 3, newStart: 1, newLines: 3, lines: [' line2', ' line3', '-line4', '+line5', '\\ No newline at end of file'], }] } ``` * `Diff.applyPatch(source, patch[, options])` - applies a unified diff patch. Return a string containing new version of provided data. `patch` may be a string diff or the output from the `parsePatch` or `structuredPatch` methods. The optional `options` object may have the following keys: - `fuzzFactor`: Number of lines that are allowed to differ before rejecting a patch. Defaults to 0. - `compareLine(lineNumber, line, operation, patchContent)`: Callback used to compare to given lines to determine if they should be considered equal when patching. Defaults to strict equality but may be overridden to provide fuzzier comparison. Should return false if the lines should be rejected. * `Diff.applyPatches(patch, options)` - applies one or more patches. This method will iterate over the contents of the patch and apply to data provided through callbacks. The general flow for each patch index is: - `options.loadFile(index, callback)` is called. The caller should then load the contents of the file and then pass that to the `callback(err, data)` callback. Passing an `err` will terminate further patch execution. - `options.patched(index, content, callback)` is called once the patch has been applied. `content` will be the return value from `applyPatch`. When it's ready, the caller should call `callback(err)` callback. Passing an `err` will terminate further patch execution. Once all patches have been applied or an error occurs, the `options.complete(err)` callback is made. * `Diff.parsePatch(diffStr)` - Parses a patch into structured data Return a JSON object representation of the a patch, suitable for use with the `applyPatch` method. This parses to the same structure returned by `Diff.structuredPatch`. * `convertChangesToXML(changes)` - converts a list of changes to a serialized XML format All methods above which accept the optional `callback` method will run in sync mode when that parameter is omitted and in async mode when supplied. This allows for larger diffs without blocking the event loop. This may be passed either directly as the final parameter or as the `callback` field in the `options` object. ### Change Objects Many of the methods above return change objects. These objects consist of the following fields: * `value`: Text content * `added`: True if the value was inserted into the new string * `removed`: True if the value was removed from the old string Note that some cases may omit a particular flag field. Comparison on the flag fields should always be done in a truthy or falsy manner. ## Examples Basic example in Node ```js require('colors'); const Diff = require('diff'); const one = 'beep boop'; const other = 'beep boob blah'; const diff = Diff.diffChars(one, other); diff.forEach((part) => { // green for additions, red for deletions // grey for common parts const color = part.added ? 'green' : part.removed ? 'red' : 'grey'; process.stderr.write(part.value[color]); }); console.log(); ``` Running the above program should yield <img src="images/node_example.png" alt="Node Example"> Basic example in a web page ```html <pre id="display"></pre> <script src="diff.js"></script> <script> const one = 'beep boop', other = 'beep boob blah', color = ''; let span = null; const diff = Diff.diffChars(one, other), display = document.getElementById('display'), fragment = document.createDocumentFragment(); diff.forEach((part) => { // green for additions, red for deletions // grey for common parts const color = part.added ? 'green' : part.removed ? 'red' : 'grey'; span = document.createElement('span'); span.style.color = color; span.appendChild(document .createTextNode(part.value)); fragment.appendChild(span); }); display.appendChild(fragment); </script> ``` Open the above .html file in a browser and you should see <img src="images/web_example.png" alt="Node Example"> **[Full online demo](http://kpdecker.github.com/jsdiff)** ## Compatibility [](https://saucelabs.com/u/jsdiff) jsdiff supports all ES3 environments with some known issues on IE8 and below. Under these browsers some diff algorithms such as word diff and others may fail due to lack of support for capturing groups in the `split` operation. ## License See [LICENSE](https://github.com/kpdecker/jsdiff/blob/master/LICENSE). <p align="center"> <a href="https://assemblyscript.org" target="_blank" rel="noopener"><img width="100" src="https://avatars1.githubusercontent.com/u/28916798?s=200&v=4" alt="AssemblyScript logo"></a> </p> <p align="center"> <a href="https://github.com/AssemblyScript/assemblyscript/actions?query=workflow%3ATest"><img src="https://img.shields.io/github/workflow/status/AssemblyScript/assemblyscript/Test/master?label=test&logo=github" alt="Test status" /></a> <a href="https://github.com/AssemblyScript/assemblyscript/actions?query=workflow%3APublish"><img src="https://img.shields.io/github/workflow/status/AssemblyScript/assemblyscript/Publish/master?label=publish&logo=github" alt="Publish status" /></a> <a href="https://www.npmjs.com/package/assemblyscript"><img src="https://img.shields.io/npm/v/assemblyscript.svg?label=compiler&color=007acc&logo=npm" alt="npm compiler version" /></a> <a href="https://www.npmjs.com/package/@assemblyscript/loader"><img src="https://img.shields.io/npm/v/@assemblyscript/loader.svg?label=loader&color=007acc&logo=npm" alt="npm loader version" /></a> <a href="https://discord.gg/assemblyscript"><img src="https://img.shields.io/discord/721472913886281818.svg?label=&logo=discord&logoColor=ffffff&color=7389D8&labelColor=6A7EC2" alt="Discord online" /></a> </p> <p align="justify"><strong>AssemblyScript</strong> compiles a strict variant of <a href="http://www.typescriptlang.org">TypeScript</a> (basically JavaScript with types) to <a href="http://webassembly.org">WebAssembly</a> using <a href="https://github.com/WebAssembly/binaryen">Binaryen</a>. It generates lean and mean WebAssembly modules while being just an <code>npm install</code> away.</p> <h3 align="center"> <a href="https://assemblyscript.org">About</a> &nbsp;·&nbsp; <a href="https://assemblyscript.org/introduction.html">Introduction</a> &nbsp;·&nbsp; <a href="https://assemblyscript.org/quick-start.html">Quick&nbsp;start</a> &nbsp;·&nbsp; <a href="https://assemblyscript.org/examples.html">Examples</a> &nbsp;·&nbsp; <a href="https://assemblyscript.org/development.html">Development&nbsp;instructions</a> </h3> <br> <h2 align="center">Contributors</h2> <p align="center"> <a href="https://assemblyscript.org/#contributors"><img src="https://assemblyscript.org/contributors.svg" alt="Contributor logos" width="720" /></a> </p> <h2 align="center">Thanks to our sponsors!</h2> <p align="justify">Most of the core team members and most contributors do this open source work in their free time. If you use AssemblyScript for a serious task or plan to do so, and you'd like us to invest more time on it, <a href="https://opencollective.com/assemblyscript/donate" target="_blank" rel="noopener">please donate</a> to our <a href="https://opencollective.com/assemblyscript" target="_blank" rel="noopener">OpenCollective</a>. By sponsoring this project, your logo will show up below. Thank you so much for your support!</p> <p align="center"> <a href="https://assemblyscript.org/#sponsors"><img src="https://assemblyscript.org/sponsors.svg" alt="Sponsor logos" width="720" /></a> </p> thesis Smart Contract ================== A [smart contract] written in [AssemblyScript] for an app initialized with [create-near-app] Quick Start =========== Before you compile this code, you will need to install [Node.js] ≥ 12 Exploring The Code ================== 1. The main smart contract code lives in `assembly/index.ts`. You can compile it with the `./compile` script. 2. Tests: You can run smart contract tests with the `./test` script. This runs standard AssemblyScript tests using [as-pect]. [smart contract]: https://docs.near.org/docs/develop/contracts/overview [AssemblyScript]: https://www.assemblyscript.org/ [create-near-app]: https://github.com/near/create-near-app [Node.js]: https://nodejs.org/en/download/package-manager/ [as-pect]: https://www.npmjs.com/package/@as-pect/cli # lodash.clonedeep v4.5.0 The [lodash](https://lodash.com/) method `_.cloneDeep` exported as a [Node.js](https://nodejs.org/) module. ## Installation Using npm: ```bash $ {sudo -H} npm i -g npm $ npm i --save lodash.clonedeep ``` In Node.js: ```js var cloneDeep = require('lodash.clonedeep'); ``` See the [documentation](https://lodash.com/docs#cloneDeep) or [package source](https://github.com/lodash/lodash/blob/4.5.0-npm-packages/lodash.clonedeep) for more details. discontinuous-range =================== ``` DiscontinuousRange(1, 10).subtract(4, 6); // [ 1-3, 7-10 ] ``` [](https://travis-ci.org/dtudury/discontinuous-range) this is a pretty simple module, but it exists to service another project so this'll be pretty lacking documentation. reading the test to see how this works may help. otherwise, here's an example that I think pretty much sums it up ###Example ``` var all_numbers = new DiscontinuousRange(1, 100); var bad_numbers = DiscontinuousRange(13).add(8).add(60,80); var good_numbers = all_numbers.clone().subtract(bad_numbers); console.log(good_numbers.toString()); //[ 1-7, 9-12, 14-59, 81-100 ] var random_good_number = good_numbers.index(Math.floor(Math.random() * good_numbers.length)); ``` # binary-install Install .tar.gz binary applications via npm ## Usage This library provides a single class `Binary` that takes a download url and some optional arguments. You **must** provide either `name` or `installDirectory` when creating your `Binary`. | option | decription | | ---------------- | --------------------------------------------- | | name | The name of your binary | | installDirectory | A path to the directory to install the binary | If an `installDirectory` is not provided, the binary will be installed at your OS specific config directory. On MacOS it defaults to `~/Library/Preferences/${name}-nodejs` After your `Binary` has been created, you can run `.install()` to install the binary, and `.run()` to run it. ### Example This is meant to be used as a library - create your `Binary` with your desired options, then call `.install()` in the `postinstall` of your `package.json`, `.run()` in the `bin` section of your `package.json`, and `.uninstall()` in the `preuninstall` section of your `package.json`. See [this example project](/example) to see how to create an npm package that installs and runs a binary using the Github releases API. ESQuery is a library for querying the AST output by Esprima for patterns of syntax using a CSS style selector system. Check out the demo: [demo](https://estools.github.io/esquery/) The following selectors are supported: * AST node type: `ForStatement` * [wildcard](http://dev.w3.org/csswg/selectors4/#universal-selector): `*` * [attribute existence](http://dev.w3.org/csswg/selectors4/#attribute-selectors): `[attr]` * [attribute value](http://dev.w3.org/csswg/selectors4/#attribute-selectors): `[attr="foo"]` or `[attr=123]` * attribute regex: `[attr=/foo.*/]` or (with flags) `[attr=/foo.*/is]` * attribute conditions: `[attr!="foo"]`, `[attr>2]`, `[attr<3]`, `[attr>=2]`, or `[attr<=3]` * nested attribute: `[attr.level2="foo"]` * field: `FunctionDeclaration > Identifier.id` * [First](http://dev.w3.org/csswg/selectors4/#the-first-child-pseudo) or [last](http://dev.w3.org/csswg/selectors4/#the-last-child-pseudo) child: `:first-child` or `:last-child` * [nth-child](http://dev.w3.org/csswg/selectors4/#the-nth-child-pseudo) (no ax+b support): `:nth-child(2)` * [nth-last-child](http://dev.w3.org/csswg/selectors4/#the-nth-last-child-pseudo) (no ax+b support): `:nth-last-child(1)` * [descendant](http://dev.w3.org/csswg/selectors4/#descendant-combinators): `ancestor descendant` * [child](http://dev.w3.org/csswg/selectors4/#child-combinators): `parent > child` * [following sibling](http://dev.w3.org/csswg/selectors4/#general-sibling-combinators): `node ~ sibling` * [adjacent sibling](http://dev.w3.org/csswg/selectors4/#adjacent-sibling-combinators): `node + adjacent` * [negation](http://dev.w3.org/csswg/selectors4/#negation-pseudo): `:not(ForStatement)` * [has](https://drafts.csswg.org/selectors-4/#has-pseudo): `:has(ForStatement)` * [matches-any](http://dev.w3.org/csswg/selectors4/#matches): `:matches([attr] > :first-child, :last-child)` * [subject indicator](http://dev.w3.org/csswg/selectors4/#subject): `!IfStatement > [name="foo"]` * class of AST node: `:statement`, `:expression`, `:declaration`, `:function`, or `:pattern` [](https://travis-ci.org/estools/esquery) # debug [](https://travis-ci.org/debug-js/debug) [](https://coveralls.io/github/debug-js/debug?branch=master) [](https://visionmedia-community-slackin.now.sh/) [](#backers) [](#sponsors) <img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png"> A tiny JavaScript debugging utility modelled after Node.js core's debugging technique. Works in Node.js and web browsers. ## Installation ```bash $ npm install debug ``` ## Usage `debug` exposes a function; simply pass this function the name of your module, and it will return a decorated version of `console.error` for you to pass debug statements to. This will allow you to toggle the debug output for different parts of your module as well as the module as a whole. Example [_app.js_](./examples/node/app.js): ```js var debug = require('debug')('http') , http = require('http') , name = 'My App'; // fake app debug('booting %o', name); http.createServer(function(req, res){ debug(req.method + ' ' + req.url); res.end('hello\n'); }).listen(3000, function(){ debug('listening'); }); // fake worker of some kind require('./worker'); ``` Example [_worker.js_](./examples/node/worker.js): ```js var a = require('debug')('worker:a') , b = require('debug')('worker:b'); function work() { a('doing lots of uninteresting work'); setTimeout(work, Math.random() * 1000); } work(); function workb() { b('doing some work'); setTimeout(workb, Math.random() * 2000); } workb(); ``` The `DEBUG` environment variable is then used to enable these based on space or comma-delimited names. Here are some examples: <img width="647" alt="screen shot 2017-08-08 at 12 53 04 pm" src="https://user-images.githubusercontent.com/71256/29091703-a6302cdc-7c38-11e7-8304-7c0b3bc600cd.png"> <img width="647" alt="screen shot 2017-08-08 at 12 53 38 pm" src="https://user-images.githubusercontent.com/71256/29091700-a62a6888-7c38-11e7-800b-db911291ca2b.png"> <img width="647" alt="screen shot 2017-08-08 at 12 53 25 pm" src="https://user-images.githubusercontent.com/71256/29091701-a62ea114-7c38-11e7-826a-2692bedca740.png"> #### Windows command prompt notes ##### CMD On Windows the environment variable is set using the `set` command. ```cmd set DEBUG=*,-not_this ``` Example: ```cmd set DEBUG=* & node app.js ``` ##### PowerShell (VS Code default) PowerShell uses different syntax to set environment variables. ```cmd $env:DEBUG = "*,-not_this" ``` Example: ```cmd $env:DEBUG='app';node app.js ``` Then, run the program to be debugged as usual. npm script example: ```js "windowsDebug": "@powershell -Command $env:DEBUG='*';node app.js", ``` ## Namespace Colors Every debug instance has a color generated for it based on its namespace name. This helps when visually parsing the debug output to identify which debug instance a debug line belongs to. #### Node.js In Node.js, colors are enabled when stderr is a TTY. You also _should_ install the [`supports-color`](https://npmjs.org/supports-color) module alongside debug, otherwise debug will only use a small handful of basic colors. <img width="521" src="https://user-images.githubusercontent.com/71256/29092181-47f6a9e6-7c3a-11e7-9a14-1928d8a711cd.png"> #### Web Browser Colors are also enabled on "Web Inspectors" that understand the `%c` formatting option. These are WebKit web inspectors, Firefox ([since version 31](https://hacks.mozilla.org/2014/05/editable-box-model-multiple-selection-sublime-text-keys-much-more-firefox-developer-tools-episode-31/)) and the Firebug plugin for Firefox (any version). <img width="524" src="https://user-images.githubusercontent.com/71256/29092033-b65f9f2e-7c39-11e7-8e32-f6f0d8e865c1.png"> ## Millisecond diff When actively developing an application it can be useful to see when the time spent between one `debug()` call and the next. Suppose for example you invoke `debug()` before requesting a resource, and after as well, the "+NNNms" will show you how much time was spent between calls. <img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png"> When stdout is not a TTY, `Date#toISOString()` is used, making it more useful for logging the debug information as shown below: <img width="647" src="https://user-images.githubusercontent.com/71256/29091956-6bd78372-7c39-11e7-8c55-c948396d6edd.png"> ## Conventions If you're using this in one or more of your libraries, you _should_ use the name of your library so that developers may toggle debugging as desired without guessing names. If you have more than one debuggers you _should_ prefix them with your library name and use ":" to separate features. For example "bodyParser" from Connect would then be "connect:bodyParser". If you append a "*" to the end of your name, it will always be enabled regardless of the setting of the DEBUG environment variable. You can then use it for normal output as well as debug output. ## Wildcards The `*` character may be used as a wildcard. Suppose for example your library has debuggers named "connect:bodyParser", "connect:compress", "connect:session", instead of listing all three with `DEBUG=connect:bodyParser,connect:compress,connect:session`, you may simply do `DEBUG=connect:*`, or to run everything using this module simply use `DEBUG=*`. You can also exclude specific debuggers by prefixing them with a "-" character. For example, `DEBUG=*,-connect:*` would include all debuggers except those starting with "connect:". ## Environment Variables When running through Node.js, you can set a few environment variables that will change the behavior of the debug logging: | Name | Purpose | |-----------|-------------------------------------------------| | `DEBUG` | Enables/disables specific debugging namespaces. | | `DEBUG_HIDE_DATE` | Hide date from debug output (non-TTY). | | `DEBUG_COLORS`| Whether or not to use colors in the debug output. | | `DEBUG_DEPTH` | Object inspection depth. | | `DEBUG_SHOW_HIDDEN` | Shows hidden properties on inspected objects. | __Note:__ The environment variables beginning with `DEBUG_` end up being converted into an Options object that gets used with `%o`/`%O` formatters. See the Node.js documentation for [`util.inspect()`](https://nodejs.org/api/util.html#util_util_inspect_object_options) for the complete list. ## Formatters Debug uses [printf-style](https://wikipedia.org/wiki/Printf_format_string) formatting. Below are the officially supported formatters: | Formatter | Representation | |-----------|----------------| | `%O` | Pretty-print an Object on multiple lines. | | `%o` | Pretty-print an Object all on a single line. | | `%s` | String. | | `%d` | Number (both integer and float). | | `%j` | JSON. Replaced with the string '[Circular]' if the argument contains circular references. | | `%%` | Single percent sign ('%'). This does not consume an argument. | ### Custom formatters You can add custom formatters by extending the `debug.formatters` object. For example, if you wanted to add support for rendering a Buffer as hex with `%h`, you could do something like: ```js const createDebug = require('debug') createDebug.formatters.h = (v) => { return v.toString('hex') } // …elsewhere const debug = createDebug('foo') debug('this is hex: %h', new Buffer('hello world')) // foo this is hex: 68656c6c6f20776f726c6421 +0ms ``` ## Browser Support You can build a browser-ready script using [browserify](https://github.com/substack/node-browserify), or just use the [browserify-as-a-service](https://wzrd.in/) [build](https://wzrd.in/standalone/debug@latest), if you don't want to build it yourself. Debug's enable state is currently persisted by `localStorage`. Consider the situation shown below where you have `worker:a` and `worker:b`, and wish to debug both. You can enable this using `localStorage.debug`: ```js localStorage.debug = 'worker:*' ``` And then refresh the page. ```js a = debug('worker:a'); b = debug('worker:b'); setInterval(function(){ a('doing some work'); }, 1000); setInterval(function(){ b('doing some work'); }, 1200); ``` In Chromium-based web browsers (e.g. Brave, Chrome, and Electron), the JavaScript console will—by default—only show messages logged by `debug` if the "Verbose" log level is _enabled_. <img width="647" src="https://user-images.githubusercontent.com/7143133/152083257-29034707-c42c-4959-8add-3cee850e6fcf.png"> ## Output streams By default `debug` will log to stderr, however this can be configured per-namespace by overriding the `log` method: Example [_stdout.js_](./examples/node/stdout.js): ```js var debug = require('debug'); var error = debug('app:error'); // by default stderr is used error('goes to stderr!'); var log = debug('app:log'); // set this namespace to log via console.log log.log = console.log.bind(console); // don't forget to bind to console! log('goes to stdout'); error('still goes to stderr!'); // set all output to go via console.info // overrides all per-namespace log settings debug.log = console.info.bind(console); error('now goes to stdout via console.info'); log('still goes to stdout, but via console.info now'); ``` ## Extend You can simply extend debugger ```js const log = require('debug')('auth'); //creates new debug instance with extended namespace const logSign = log.extend('sign'); const logLogin = log.extend('login'); log('hello'); // auth hello logSign('hello'); //auth:sign hello logLogin('hello'); //auth:login hello ``` ## Set dynamically You can also enable debug dynamically by calling the `enable()` method : ```js let debug = require('debug'); console.log(1, debug.enabled('test')); debug.enable('test'); console.log(2, debug.enabled('test')); debug.disable(); console.log(3, debug.enabled('test')); ``` print : ``` 1 false 2 true 3 false ``` Usage : `enable(namespaces)` `namespaces` can include modes separated by a colon and wildcards. Note that calling `enable()` completely overrides previously set DEBUG variable : ``` $ DEBUG=foo node -e 'var dbg = require("debug"); dbg.enable("bar"); console.log(dbg.enabled("foo"))' => false ``` `disable()` Will disable all namespaces. The functions returns the namespaces currently enabled (and skipped). This can be useful if you want to disable debugging temporarily without knowing what was enabled to begin with. For example: ```js let debug = require('debug'); debug.enable('foo:*,-foo:bar'); let namespaces = debug.disable(); debug.enable(namespaces); ``` Note: There is no guarantee that the string will be identical to the initial enable string, but semantically they will be identical. ## Checking whether a debug target is enabled After you've created a debug instance, you can determine whether or not it is enabled by checking the `enabled` property: ```javascript const debug = require('debug')('http'); if (debug.enabled) { // do stuff... } ``` You can also manually toggle this property to force the debug instance to be enabled or disabled. ## Usage in child processes Due to the way `debug` detects if the output is a TTY or not, colors are not shown in child processes when `stderr` is piped. A solution is to pass the `DEBUG_COLORS=1` environment variable to the child process. For example: ```javascript worker = fork(WORKER_WRAP_PATH, [workerPath], { stdio: [ /* stdin: */ 0, /* stdout: */ 'pipe', /* stderr: */ 'pipe', 'ipc', ], env: Object.assign({}, process.env, { DEBUG_COLORS: 1 // without this settings, colors won't be shown }), }); worker.stderr.pipe(process.stderr, { end: false }); ``` ## Authors - TJ Holowaychuk - Nathan Rajlich - Andrew Rhyne - Josh Junon ## Backers Support us with a monthly donation and help us continue our activities. 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Copyright (c) 2018-2021 Josh Junon Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # set-blocking [](https://travis-ci.org/yargs/set-blocking) [](https://www.npmjs.com/package/set-blocking) [](https://coveralls.io/r/yargs/set-blocking?branch=master) [](https://github.com/conventional-changelog/standard-version) set blocking `stdio` and `stderr` ensuring that terminal output does not truncate. ```js const setBlocking = require('set-blocking') setBlocking(true) console.log(someLargeStringToOutput) ``` ## Historical Context/Word of Warning This was created as a shim to address the bug discussed in [node #6456](https://github.com/nodejs/node/issues/6456). This bug crops up on newer versions of Node.js (`0.12+`), truncating terminal output. You should be mindful of the side-effects caused by using `set-blocking`: * if your module sets blocking to `true`, it will effect other modules consuming your library. In [yargs](https://github.com/yargs/yargs/blob/master/yargs.js#L653) we only call `setBlocking(true)` once we already know we are about to call `process.exit(code)`. * this patch will not apply to subprocesses spawned with `isTTY = true`, this is the [default `spawn()` behavior](https://nodejs.org/api/child_process.html#child_process_child_process_spawn_command_args_options). ## License ISC # fast-levenshtein - Levenshtein algorithm in Javascript [](http://travis-ci.org/hiddentao/fast-levenshtein) [](https://badge.fury.io/js/fast-levenshtein) [](https://www.npmjs.com/package/fast-levenshtein) [](https://twitter.com/hiddentao) An efficient Javascript implementation of the [Levenshtein algorithm](http://en.wikipedia.org/wiki/Levenshtein_distance) with locale-specific collator support. ## Features * Works in node.js and in the browser. * Better performance than other implementations by not needing to store the whole matrix ([more info](http://www.codeproject.com/Articles/13525/Fast-memory-efficient-Levenshtein-algorithm)). * Locale-sensitive string comparisions if needed. * Comprehensive test suite and performance benchmark. * Small: <1 KB minified and gzipped ## Installation ### node.js Install using [npm](http://npmjs.org/): ```bash $ npm install fast-levenshtein ``` ### Browser Using bower: ```bash $ bower install fast-levenshtein ``` If you are not using any module loader system then the API will then be accessible via the `window.Levenshtein` object. ## Examples **Default usage** ```javascript var levenshtein = require('fast-levenshtein'); var distance = levenshtein.get('back', 'book'); // 2 var distance = levenshtein.get('我愛你', '我叫你'); // 1 ``` **Locale-sensitive string comparisons** It supports using [Intl.Collator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Collator) for locale-sensitive string comparisons: ```javascript var levenshtein = require('fast-levenshtein'); levenshtein.get('mikailovitch', 'Mikhaïlovitch', { useCollator: true}); // 1 ``` ## Building and Testing To build the code and run the tests: ```bash $ npm install -g grunt-cli $ npm install $ npm run build ``` ## Performance _Thanks to [Titus Wormer](https://github.com/wooorm) for [encouraging me](https://github.com/hiddentao/fast-levenshtein/issues/1) to do this._ Benchmarked against other node.js levenshtein distance modules (on Macbook Air 2012, Core i7, 8GB RAM): ```bash Running suite Implementation comparison [benchmark/speed.js]... >> levenshtein-edit-distance x 234 ops/sec ±3.02% (73 runs sampled) >> levenshtein-component x 422 ops/sec ±4.38% (83 runs sampled) >> levenshtein-deltas x 283 ops/sec ±3.83% (78 runs sampled) >> natural x 255 ops/sec ±0.76% (88 runs sampled) >> levenshtein x 180 ops/sec ±3.55% (86 runs sampled) >> fast-levenshtein x 1,792 ops/sec ±2.72% (95 runs sampled) Benchmark done. Fastest test is fast-levenshtein at 4.2x faster than levenshtein-component ``` You can run this benchmark yourself by doing: ```bash $ npm install $ npm run build $ npm run benchmark ``` ## Contributing If you wish to submit a pull request please update and/or create new tests for any changes you make and ensure the grunt build passes. See [CONTRIBUTING.md](https://github.com/hiddentao/fast-levenshtein/blob/master/CONTRIBUTING.md) for details. ## License MIT - see [LICENSE.md](https://github.com/hiddentao/fast-levenshtein/blob/master/LICENSE.md) [](https://www.npmjs.com/package/as-bignum)[](https://travis-ci.com/MaxGraey/as-bignum)[](LICENSE.md) ## WebAssembly fixed length big numbers written on [AssemblyScript](https://github.com/AssemblyScript/assemblyscript) ### Status: Work in progress Provide wide numeric types such as `u128`, `u256`, `i128`, `i256` and fixed points and also its arithmetic operations. Namespace `safe` contain equivalents with overflow/underflow traps. All kind of types pretty useful for economical and cryptographic usages and provide deterministic behavior. ### Install > yarn add as-bignum or > npm i as-bignum ### Usage via AssemblyScript ```ts import { u128 } from "as-bignum"; declare function logF64(value: f64): void; declare function logU128(hi: u64, lo: u64): void; var a = u128.One; var b = u128.from(-32); // same as u128.from<i32>(-32) var c = new u128(0x1, -0xF); var d = u128.from(0x0123456789ABCDEF); // same as u128.from<i64>(0x0123456789ABCDEF) var e = u128.from('0x0123456789ABCDEF01234567'); var f = u128.fromString('11100010101100101', 2); // same as u128.from('0b11100010101100101') var r = d / c + (b << 5) + e; logF64(r.as<f64>()); logU128(r.hi, r.lo); ``` ### Usage via JavaScript/Typescript ```ts TODO ``` ### List of types - [x] [`u128`](https://github.com/MaxGraey/as-bignum/blob/master/assembly/integer/u128.ts) unsigned type (tested) - [ ] [`u256`](https://github.com/MaxGraey/as-bignum/blob/master/assembly/integer/u256.ts) unsigned type (very basic) - [ ] `i128` signed type - [ ] `i256` signed type --- - [x] [`safe.u128`](https://github.com/MaxGraey/as-bignum/blob/master/assembly/integer/safe/u128.ts) unsigned type (tested) - [ ] `safe.u256` unsigned type - [ ] `safe.i128` signed type - [ ] `safe.i256` signed type --- - [ ] [`fp128<Q>`](https://github.com/MaxGraey/as-bignum/blob/master/assembly/fixed/fp128.ts) generic fixed point signed type٭ (very basic for now) - [ ] `fp256<Q>` generic fixed point signed type٭ --- - [ ] `safe.fp128<Q>` generic fixed point signed type٭ - [ ] `safe.fp256<Q>` generic fixed point signed type٭ ٭ _typename_ `Q` _is a type representing count of fractional bits_ <p align="center"> <a href="https://gulpjs.com"> <img height="257" width="114" src="https://raw.githubusercontent.com/gulpjs/artwork/master/gulp-2x.png"> </a> </p> # glob-parent [![NPM version][npm-image]][npm-url] [![Downloads][downloads-image]][npm-url] [![Azure Pipelines Build Status][azure-pipelines-image]][azure-pipelines-url] [![Travis Build Status][travis-image]][travis-url] [![AppVeyor Build Status][appveyor-image]][appveyor-url] [![Coveralls Status][coveralls-image]][coveralls-url] [![Gitter chat][gitter-image]][gitter-url] Extract the non-magic parent path from a glob string. ## Usage ```js var globParent = require('glob-parent'); globParent('path/to/*.js'); // 'path/to' globParent('/root/path/to/*.js'); // '/root/path/to' globParent('/*.js'); // '/' globParent('*.js'); // '.' globParent('**/*.js'); // '.' globParent('path/{to,from}'); // 'path' globParent('path/!(to|from)'); // 'path' globParent('path/?(to|from)'); // 'path' globParent('path/+(to|from)'); // 'path' globParent('path/*(to|from)'); // 'path' globParent('path/@(to|from)'); // 'path' globParent('path/**/*'); // 'path' // if provided a non-glob path, returns the nearest dir globParent('path/foo/bar.js'); // 'path/foo' globParent('path/foo/'); // 'path/foo' globParent('path/foo'); // 'path' (see issue #3 for details) ``` ## API ### `globParent(maybeGlobString, [options])` Takes a string and returns the part of the path before the glob begins. Be aware of Escaping rules and Limitations below. #### options ```js { // Disables the automatic conversion of slashes for Windows flipBackslashes: true } ``` ## Escaping The following characters have special significance in glob patterns and must be escaped if you want them to be treated as regular path characters: - `?` (question mark) unless used as a path segment alone - `*` (asterisk) - `|` (pipe) - `(` (opening parenthesis) - `)` (closing parenthesis) - `{` (opening curly brace) - `}` (closing curly brace) - `[` (opening bracket) - `]` (closing bracket) **Example** ```js globParent('foo/[bar]/') // 'foo' globParent('foo/\\[bar]/') // 'foo/[bar]' ``` ## Limitations ### Braces & Brackets This library attempts a quick and imperfect method of determining which path parts have glob magic without fully parsing/lexing the pattern. There are some advanced use cases that can trip it up, such as nested braces where the outer pair is escaped and the inner one contains a path separator. If you find yourself in the unlikely circumstance of being affected by this or need to ensure higher-fidelity glob handling in your library, it is recommended that you pre-process your input with [expand-braces] and/or [expand-brackets]. ### Windows Backslashes are not valid path separators for globs. If a path with backslashes is provided anyway, for simple cases, glob-parent will replace the path separator for you and return the non-glob parent path (now with forward-slashes, which are still valid as Windows path separators). This cannot be used in conjunction with escape characters. ```js // BAD globParent('C:\\Program Files \\(x86\\)\\*.ext') // 'C:/Program Files /(x86/)' // GOOD globParent('C:/Program Files\\(x86\\)/*.ext') // 'C:/Program Files (x86)' ``` If you are using escape characters for a pattern without path parts (i.e. relative to `cwd`), prefix with `./` to avoid confusing glob-parent. ```js // BAD globParent('foo \\[bar]') // 'foo ' globParent('foo \\[bar]*') // 'foo ' // GOOD globParent('./foo \\[bar]') // 'foo [bar]' globParent('./foo \\[bar]*') // '.' ``` ## License ISC [expand-braces]: https://github.com/jonschlinkert/expand-braces [expand-brackets]: https://github.com/jonschlinkert/expand-brackets [downloads-image]: https://img.shields.io/npm/dm/glob-parent.svg [npm-url]: https://www.npmjs.com/package/glob-parent [npm-image]: https://img.shields.io/npm/v/glob-parent.svg [azure-pipelines-url]: https://dev.azure.com/gulpjs/gulp/_build/latest?definitionId=2&branchName=master [azure-pipelines-image]: https://dev.azure.com/gulpjs/gulp/_apis/build/status/glob-parent?branchName=master [travis-url]: https://travis-ci.org/gulpjs/glob-parent [travis-image]: https://img.shields.io/travis/gulpjs/glob-parent.svg?label=travis-ci [appveyor-url]: https://ci.appveyor.com/project/gulpjs/glob-parent [appveyor-image]: https://img.shields.io/appveyor/ci/gulpjs/glob-parent.svg?label=appveyor [coveralls-url]: https://coveralls.io/r/gulpjs/glob-parent [coveralls-image]: https://img.shields.io/coveralls/gulpjs/glob-parent/master.svg [gitter-url]: https://gitter.im/gulpjs/gulp [gitter-image]: https://badges.gitter.im/gulpjs/gulp.svg # path-parse [](https://travis-ci.org/jbgutierrez/path-parse) > Node.js [`path.parse(pathString)`](https://nodejs.org/api/path.html#path_path_parse_pathstring) [ponyfill](https://ponyfill.com). ## Install ``` $ npm install --save path-parse ``` ## Usage ```js var pathParse = require('path-parse'); pathParse('/home/user/dir/file.txt'); //=> { // root : "/", // dir : "/home/user/dir", // base : "file.txt", // ext : ".txt", // name : "file" // } ``` ## API See [`path.parse(pathString)`](https://nodejs.org/api/path.html#path_path_parse_pathstring) docs. ### pathParse(path) ### pathParse.posix(path) The Posix specific version. ### pathParse.win32(path) The Windows specific version. ## License MIT © [Javier Blanco](http://jbgutierrez.info) <table><thead> <tr> <th>Linux</th> <th>OS X</th> <th>Windows</th> <th>Coverage</th> <th>Downloads</th> </tr> </thead><tbody><tr> <td colspan="2" align="center"> <a href="https://travis-ci.org/kaelzhang/node-ignore"> <img src="https://travis-ci.org/kaelzhang/node-ignore.svg?branch=master" alt="Build Status" /></a> </td> <td align="center"> <a href="https://ci.appveyor.com/project/kaelzhang/node-ignore"> <img src="https://ci.appveyor.com/api/projects/status/github/kaelzhang/node-ignore?branch=master&svg=true" alt="Windows Build Status" /></a> </td> <td align="center"> <a href="https://codecov.io/gh/kaelzhang/node-ignore"> <img src="https://codecov.io/gh/kaelzhang/node-ignore/branch/master/graph/badge.svg" alt="Coverage Status" /></a> </td> <td align="center"> <a href="https://www.npmjs.org/package/ignore"> <img src="http://img.shields.io/npm/dm/ignore.svg" alt="npm module downloads per month" /></a> </td> </tr></tbody></table> # ignore `ignore` is a manager, filter and parser which implemented in pure JavaScript according to the .gitignore [spec](http://git-scm.com/docs/gitignore). Pay attention that [`minimatch`](https://www.npmjs.org/package/minimatch) does not work in the gitignore way. To filter filenames according to .gitignore file, I recommend this module. ##### Tested on - Linux + Node: `0.8` - `7.x` - Windows + Node: `0.10` - `7.x`, node < `0.10` is not tested due to the lack of support of appveyor. Actually, `ignore` does not rely on any versions of node specially. Since `4.0.0`, ignore will no longer support `node < 6` by default, to use in node < 6, `require('ignore/legacy')`. For details, see [CHANGELOG](https://github.com/kaelzhang/node-ignore/blob/master/CHANGELOG.md). ## Table Of Main Contents - [Usage](#usage) - [`Pathname` Conventions](#pathname-conventions) - [Guide for 2.x -> 3.x](#upgrade-2x---3x) - [Guide for 3.x -> 4.x](#upgrade-3x---4x) - See Also: - [`glob-gitignore`](https://www.npmjs.com/package/glob-gitignore) matches files using patterns and filters them according to gitignore rules. ## Usage ```js import ignore from 'ignore' const ig = ignore().add(['.abc/*', '!.abc/d/']) ``` ### Filter the given paths ```js const paths = [ '.abc/a.js', // filtered out '.abc/d/e.js' // included ] ig.filter(paths) // ['.abc/d/e.js'] ig.ignores('.abc/a.js') // true ``` ### As the filter function ```js paths.filter(ig.createFilter()); // ['.abc/d/e.js'] ``` ### Win32 paths will be handled ```js ig.filter(['.abc\\a.js', '.abc\\d\\e.js']) // if the code above runs on windows, the result will be // ['.abc\\d\\e.js'] ``` ## Why another ignore? - `ignore` is a standalone module, and is much simpler so that it could easy work with other programs, unlike [isaacs](https://npmjs.org/~isaacs)'s [fstream-ignore](https://npmjs.org/package/fstream-ignore) which must work with the modules of the fstream family. - `ignore` only contains utility methods to filter paths according to the specified ignore rules, so - `ignore` never try to find out ignore rules by traversing directories or fetching from git configurations. - `ignore` don't cares about sub-modules of git projects. - Exactly according to [gitignore man page](http://git-scm.com/docs/gitignore), fixes some known matching issues of fstream-ignore, such as: - '`/*.js`' should only match '`a.js`', but not '`abc/a.js`'. - '`**/foo`' should match '`foo`' anywhere. - Prevent re-including a file if a parent directory of that file is excluded. - Handle trailing whitespaces: - `'a '`(one space) should not match `'a '`(two spaces). - `'a \ '` matches `'a '` - All test cases are verified with the result of `git check-ignore`. # Methods ## .add(pattern: string | Ignore): this ## .add(patterns: Array<string | Ignore>): this - **pattern** `String | Ignore` An ignore pattern string, or the `Ignore` instance - **patterns** `Array<String | Ignore>` Array of ignore patterns. Adds a rule or several rules to the current manager. Returns `this` Notice that a line starting with `'#'`(hash) is treated as a comment. Put a backslash (`'\'`) in front of the first hash for patterns that begin with a hash, if you want to ignore a file with a hash at the beginning of the filename. ```js ignore().add('#abc').ignores('#abc') // false ignore().add('\#abc').ignores('#abc') // true ``` `pattern` could either be a line of ignore pattern or a string of multiple ignore patterns, which means we could just `ignore().add()` the content of a ignore file: ```js ignore() .add(fs.readFileSync(filenameOfGitignore).toString()) .filter(filenames) ``` `pattern` could also be an `ignore` instance, so that we could easily inherit the rules of another `Ignore` instance. ## <strike>.addIgnoreFile(path)</strike> REMOVED in `3.x` for now. To upgrade `ignore@2.x` up to `3.x`, use ```js import fs from 'fs' if (fs.existsSync(filename)) { ignore().add(fs.readFileSync(filename).toString()) } ``` instead. ## .filter(paths: Array<Pathname>): Array<Pathname> ```ts type Pathname = string ``` Filters the given array of pathnames, and returns the filtered array. - **paths** `Array.<Pathname>` The array of `pathname`s to be filtered. ### `Pathname` Conventions: #### 1. `Pathname` should be a `path.relative()`d pathname `Pathname` should be a string that have been `path.join()`ed, or the return value of `path.relative()` to the current directory. ```js // WRONG ig.ignores('./abc') // WRONG, for it will never happen. // If the gitignore rule locates at the root directory, // `'/abc'` should be changed to `'abc'`. // ``` // path.relative('/', '/abc') -> 'abc' // ``` ig.ignores('/abc') // Right ig.ignores('abc') // Right ig.ignores(path.join('./abc')) // path.join('./abc') -> 'abc' ``` In other words, each `Pathname` here should be a relative path to the directory of the gitignore rules. Suppose the dir structure is: ``` /path/to/your/repo |-- a | |-- a.js | |-- .b | |-- .c |-- .DS_store ``` Then the `paths` might be like this: ```js [ 'a/a.js' '.b', '.c/.DS_store' ] ``` Usually, you could use [`glob`](http://npmjs.org/package/glob) with `option.mark = true` to fetch the structure of the current directory: ```js import glob from 'glob' glob('**', { // Adds a / character to directory matches. mark: true }, (err, files) => { if (err) { return console.error(err) } let filtered = ignore().add(patterns).filter(files) console.log(filtered) }) ``` #### 2. filenames and dirnames `node-ignore` does NO `fs.stat` during path matching, so for the example below: ```js ig.add('config/') // `ig` does NOT know if 'config' is a normal file, directory or something ig.ignores('config') // And it returns `false` ig.ignores('config/') // returns `true` ``` Specially for people who develop some library based on `node-ignore`, it is important to understand that. ## .ignores(pathname: Pathname): boolean > new in 3.2.0 Returns `Boolean` whether `pathname` should be ignored. ```js ig.ignores('.abc/a.js') // true ``` ## .createFilter() Creates a filter function which could filter an array of paths with `Array.prototype.filter`. Returns `function(path)` the filter function. ## `options.ignorecase` since 4.0.0 Similar as the `core.ignorecase` option of [git-config](https://git-scm.com/docs/git-config), `node-ignore` will be case insensitive if `options.ignorecase` is set to `true` (default value), otherwise case sensitive. ```js const ig = ignore({ ignorecase: false }) ig.add('*.png') ig.ignores('*.PNG') // false ``` **** # Upgrade Guide ## Upgrade 2.x -> 3.x - All `options` of 2.x are unnecessary and removed, so just remove them. - `ignore()` instance is no longer an [`EventEmitter`](nodejs.org/api/events.html), and all events are unnecessary and removed. - `.addIgnoreFile()` is removed, see the [.addIgnoreFile](#addignorefilepath) section for details. ## Upgrade 3.x -> 4.x Since `4.0.0`, `ignore` will no longer support node < 6, to use `ignore` in node < 6: ```js var ignore = require('ignore/legacy') ``` **** # Collaborators - [@whitecolor](https://github.com/whitecolor) *Alex* - [@SamyPesse](https://github.com/SamyPesse) *Samy Pessé* - [@azproduction](https://github.com/azproduction) *Mikhail Davydov* - [@TrySound](https://github.com/TrySound) *Bogdan Chadkin* - [@JanMattner](https://github.com/JanMattner) *Jan Mattner* - [@ntwb](https://github.com/ntwb) *Stephen Edgar* - [@kasperisager](https://github.com/kasperisager) *Kasper Isager* - [@sandersn](https://github.com/sandersn) *Nathan Shively-Sanders* # is-extglob [](https://www.npmjs.com/package/is-extglob) [](https://npmjs.org/package/is-extglob) [](https://travis-ci.org/jonschlinkert/is-extglob) > Returns true if a string has an extglob. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save is-extglob ``` ## Usage ```js var isExtglob = require('is-extglob'); ``` **True** ```js isExtglob('?(abc)'); isExtglob('@(abc)'); isExtglob('!(abc)'); isExtglob('*(abc)'); isExtglob('+(abc)'); ``` **False** Escaped extglobs: ```js isExtglob('\\?(abc)'); isExtglob('\\@(abc)'); isExtglob('\\!(abc)'); isExtglob('\\*(abc)'); isExtglob('\\+(abc)'); ``` Everything else... ```js isExtglob('foo.js'); isExtglob('!foo.js'); isExtglob('*.js'); isExtglob('**/abc.js'); isExtglob('abc/*.js'); isExtglob('abc/(aaa|bbb).js'); isExtglob('abc/[a-z].js'); isExtglob('abc/{a,b}.js'); isExtglob('abc/?.js'); isExtglob('abc.js'); isExtglob('abc/def/ghi.js'); ``` ## History **v2.0** Adds support for escaping. Escaped exglobs no longer return true. ## About ### Related projects * [has-glob](https://www.npmjs.com/package/has-glob): Returns `true` if an array has a glob pattern. | [homepage](https://github.com/jonschlinkert/has-glob "Returns `true` if an array has a glob pattern.") * [is-glob](https://www.npmjs.com/package/is-glob): Returns `true` if the given string looks like a glob pattern or an extglob pattern… [more](https://github.com/jonschlinkert/is-glob) | [homepage](https://github.com/jonschlinkert/is-glob "Returns `true` if the given string looks like a glob pattern or an extglob pattern. This makes it easy to create code that only uses external modules like node-glob when necessary, resulting in much faster code execution and initialization time, and a bet") * [micromatch](https://www.npmjs.com/package/micromatch): Glob matching for javascript/node.js. A drop-in replacement and faster alternative to minimatch and multimatch. | [homepage](https://github.com/jonschlinkert/micromatch "Glob matching for javascript/node.js. A drop-in replacement and faster alternative to minimatch and multimatch.") ### Contributing Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). ### Building docs _(This document was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme) (a [verb](https://github.com/verbose/verb) generator), please don't edit the readme directly. Any changes to the readme must be made in [.verb.md](.verb.md).)_ To generate the readme and API documentation with [verb](https://github.com/verbose/verb): ```sh $ npm install -g verb verb-generate-readme && verb ``` ### Running tests Install dev dependencies: ```sh $ npm install -d && npm test ``` ### Author **Jon Schlinkert** * [github/jonschlinkert](https://github.com/jonschlinkert) * [twitter/jonschlinkert](http://twitter.com/jonschlinkert) ### License Copyright © 2016, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT license](https://github.com/jonschlinkert/is-extglob/blob/master/LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.1.31, on October 12, 2016._ # lodash.sortby v4.7.0 The [lodash](https://lodash.com/) method `_.sortBy` exported as a [Node.js](https://nodejs.org/) module. ## Installation Using npm: ```bash $ {sudo -H} npm i -g npm $ npm i --save lodash.sortby ``` In Node.js: ```js var sortBy = require('lodash.sortby'); ``` See the [documentation](https://lodash.com/docs#sortBy) or [package source](https://github.com/lodash/lodash/blob/4.7.0-npm-packages/lodash.sortby) for more details. [Build]: http://img.shields.io/travis/litejs/natural-compare-lite.png [Coverage]: http://img.shields.io/coveralls/litejs/natural-compare-lite.png [1]: https://travis-ci.org/litejs/natural-compare-lite [2]: https://coveralls.io/r/litejs/natural-compare-lite [npm package]: https://npmjs.org/package/natural-compare-lite [GitHub repo]: https://github.com/litejs/natural-compare-lite @version 1.4.0 @date 2015-10-26 @stability 3 - Stable Natural Compare &ndash; [![Build][]][1] [![Coverage][]][2] =============== Compare strings containing a mix of letters and numbers in the way a human being would in sort order. This is described as a "natural ordering". ```text Standard sorting: Natural order sorting: img1.png img1.png img10.png img2.png img12.png img10.png img2.png img12.png ``` String.naturalCompare returns a number indicating whether a reference string comes before or after or is the same as the given string in sort order. Use it with builtin sort() function. ### Installation - In browser ```html <script src=min.natural-compare.js></script> ``` - In node.js: `npm install natural-compare-lite` ```javascript require("natural-compare-lite") ``` ### Usage ```javascript // Simple case sensitive example var a = ["z1.doc", "z10.doc", "z17.doc", "z2.doc", "z23.doc", "z3.doc"]; a.sort(String.naturalCompare); // ["z1.doc", "z2.doc", "z3.doc", "z10.doc", "z17.doc", "z23.doc"] // Use wrapper function for case insensitivity a.sort(function(a, b){ return String.naturalCompare(a.toLowerCase(), b.toLowerCase()); }) // In most cases we want to sort an array of objects var a = [ {"street":"350 5th Ave", "room":"A-1021"} , {"street":"350 5th Ave", "room":"A-21046-b"} ]; // sort by street, then by room a.sort(function(a, b){ return String.naturalCompare(a.street, b.street) || String.naturalCompare(a.room, b.room); }) // When text transformation is needed (eg toLowerCase()), // it is best for performance to keep // transformed key in that object. // There are no need to do text transformation // on each comparision when sorting. var a = [ {"make":"Audi", "model":"A6"} , {"make":"Kia", "model":"Rio"} ]; // sort by make, then by model a.map(function(car){ car.sort_key = (car.make + " " + car.model).toLowerCase(); }) a.sort(function(a, b){ return String.naturalCompare(a.sort_key, b.sort_key); }) ``` - Works well with dates in ISO format eg "Rev 2012-07-26.doc". ### Custom alphabet It is possible to configure a custom alphabet to achieve a desired order. ```javascript // Estonian alphabet String.alphabet = "ABDEFGHIJKLMNOPRSŠZŽTUVÕÄÖÜXYabdefghijklmnoprsšzžtuvõäöüxy" ["t", "z", "x", "õ"].sort(String.naturalCompare) // ["z", "t", "õ", "x"] // Russian alphabet String.alphabet = "АБВГДЕЁЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдеёжзийклмнопрстуфхцчшщъыьэюя" ["Ё", "А", "Б"].sort(String.naturalCompare) // ["А", "Б", "Ё"] ``` External links -------------- - [GitHub repo][https://github.com/litejs/natural-compare-lite] - [jsperf test](http://jsperf.com/natural-sort-2/12) Licence ------- Copyright (c) 2012-2015 Lauri Rooden &lt;lauri@rooden.ee&gt; [The MIT License](http://lauri.rooden.ee/mit-license.txt) assemblyscript-json # assemblyscript-json ## Table of contents ### Namespaces - [JSON](modules/json.md) ### Classes - [DecoderState](classes/decoderstate.md) - [JSONDecoder](classes/jsondecoder.md) - [JSONEncoder](classes/jsonencoder.md) - [JSONHandler](classes/jsonhandler.md) - [ThrowingJSONHandler](classes/throwingjsonhandler.md) # eslint-utils [](https://www.npmjs.com/package/eslint-utils) [](http://www.npmtrends.com/eslint-utils) [](https://github.com/mysticatea/eslint-utils/actions) [](https://codecov.io/gh/mysticatea/eslint-utils) [](https://david-dm.org/mysticatea/eslint-utils) ## 🏁 Goal This package provides utility functions and classes for make ESLint custom rules. For examples: - [getStaticValue](https://eslint-utils.mysticatea.dev/api/ast-utils.html#getstaticvalue) evaluates static value on AST. - [ReferenceTracker](https://eslint-utils.mysticatea.dev/api/scope-utils.html#referencetracker-class) checks the members of modules/globals as handling assignments and destructuring. ## 📖 Usage See [documentation](https://eslint-utils.mysticatea.dev/). ## 📰 Changelog See [releases](https://github.com/mysticatea/eslint-utils/releases). ## ❤️ Contributing Welcome contributing! Please use GitHub's Issues/PRs. ### Development Tools - `npm test` runs tests and measures coverage. - `npm run clean` removes the coverage result of `npm test` command. - `npm run coverage` shows the coverage result of the last `npm test` command. - `npm run lint` runs ESLint. - `npm run watch` runs tests on each file change. # Acorn-JSX [](https://travis-ci.org/acornjs/acorn-jsx) [](https://www.npmjs.org/package/acorn-jsx) This is plugin for [Acorn](http://marijnhaverbeke.nl/acorn/) - a tiny, fast JavaScript parser, written completely in JavaScript. It was created as an experimental alternative, faster [React.js JSX](http://facebook.github.io/react/docs/jsx-in-depth.html) parser. Later, it replaced the [official parser](https://github.com/facebookarchive/esprima) and these days is used by many prominent development tools. ## Transpiler Please note that this tool only parses source code to JSX AST, which is useful for various language tools and services. If you want to transpile your code to regular ES5-compliant JavaScript with source map, check out [Babel](https://babeljs.io/) and [Buble](https://buble.surge.sh/) transpilers which use `acorn-jsx` under the hood. ## Usage Requiring this module provides you with an Acorn plugin that you can use like this: ```javascript var acorn = require("acorn"); var jsx = require("acorn-jsx"); acorn.Parser.extend(jsx()).parse("my(<jsx/>, 'code');"); ``` Note that official spec doesn't support mix of XML namespaces and object-style access in tag names (#27) like in `<namespace:Object.Property />`, so it was deprecated in `acorn-jsx@3.0`. If you still want to opt-in to support of such constructions, you can pass the following option: ```javascript acorn.Parser.extend(jsx({ allowNamespacedObjects: true })) ``` Also, since most apps use pure React transformer, a new option was introduced that allows to prohibit namespaces completely: ```javascript acorn.Parser.extend(jsx({ allowNamespaces: false })) ``` Note that by default `allowNamespaces` is enabled for spec compliancy. ## License This plugin is issued under the [MIT license](./LICENSE). Shims used when bundling asc for browser usage. # Glob Match files using the patterns the shell uses, like stars and stuff. [](https://travis-ci.org/isaacs/node-glob/) [](https://ci.appveyor.com/project/isaacs/node-glob) [](https://coveralls.io/github/isaacs/node-glob?branch=master) This is a glob implementation in JavaScript. It uses the `minimatch` library to do its matching.  ## Usage Install with npm ``` npm i glob ``` ```javascript var glob = require("glob") // options is optional glob("**/*.js", options, function (er, files) { // files is an array of filenames. // If the `nonull` option is set, and nothing // was found, then files is ["**/*.js"] // er is an error object or null. }) ``` ## Glob Primer "Globs" are the patterns you type when you do stuff like `ls *.js` on the command line, or put `build/*` in a `.gitignore` file. Before parsing the path part patterns, braced sections are expanded into a set. Braced sections start with `{` and end with `}`, with any number of comma-delimited sections within. Braced sections may contain slash characters, so `a{/b/c,bcd}` would expand into `a/b/c` and `abcd`. The following characters have special magic meaning when used in a path portion: * `*` Matches 0 or more characters in a single path portion * `?` Matches 1 character * `[...]` Matches a range of characters, similar to a RegExp range. If the first character of the range is `!` or `^` then it matches any character not in the range. * `!(pattern|pattern|pattern)` Matches anything that does not match any of the patterns provided. * `?(pattern|pattern|pattern)` Matches zero or one occurrence of the patterns provided. * `+(pattern|pattern|pattern)` Matches one or more occurrences of the patterns provided. * `*(a|b|c)` Matches zero or more occurrences of the patterns provided * `@(pattern|pat*|pat?erN)` Matches exactly one of the patterns provided * `**` If a "globstar" is alone in a path portion, then it matches zero or more directories and subdirectories searching for matches. It does not crawl symlinked directories. ### Dots If a file or directory path portion has a `.` as the first character, then it will not match any glob pattern unless that pattern's corresponding path part also has a `.` as its first character. For example, the pattern `a/.*/c` would match the file at `a/.b/c`. However the pattern `a/*/c` would not, because `*` does not start with a dot character. You can make glob treat dots as normal characters by setting `dot:true` in the options. ### Basename Matching If you set `matchBase:true` in the options, and the pattern has no slashes in it, then it will seek for any file anywhere in the tree with a matching basename. For example, `*.js` would match `test/simple/basic.js`. ### Empty Sets If no matching files are found, then an empty array is returned. This differs from the shell, where the pattern itself is returned. For example: $ echo a*s*d*f a*s*d*f To get the bash-style behavior, set the `nonull:true` in the options. ### See Also: * `man sh` * `man bash` (Search for "Pattern Matching") * `man 3 fnmatch` * `man 5 gitignore` * [minimatch documentation](https://github.com/isaacs/minimatch) ## glob.hasMagic(pattern, [options]) Returns `true` if there are any special characters in the pattern, and `false` otherwise. Note that the options affect the results. If `noext:true` is set in the options object, then `+(a|b)` will not be considered a magic pattern. If the pattern has a brace expansion, like `a/{b/c,x/y}` then that is considered magical, unless `nobrace:true` is set in the options. ## glob(pattern, [options], cb) * `pattern` `{String}` Pattern to be matched * `options` `{Object}` * `cb` `{Function}` * `err` `{Error | null}` * `matches` `{Array<String>}` filenames found matching the pattern Perform an asynchronous glob search. ## glob.sync(pattern, [options]) * `pattern` `{String}` Pattern to be matched * `options` `{Object}` * return: `{Array<String>}` filenames found matching the pattern Perform a synchronous glob search. ## Class: glob.Glob Create a Glob object by instantiating the `glob.Glob` class. ```javascript var Glob = require("glob").Glob var mg = new Glob(pattern, options, cb) ``` It's an EventEmitter, and starts walking the filesystem to find matches immediately. ### new glob.Glob(pattern, [options], [cb]) * `pattern` `{String}` pattern to search for * `options` `{Object}` * `cb` `{Function}` Called when an error occurs, or matches are found * `err` `{Error | null}` * `matches` `{Array<String>}` filenames found matching the pattern Note that if the `sync` flag is set in the options, then matches will be immediately available on the `g.found` member. ### Properties * `minimatch` The minimatch object that the glob uses. * `options` The options object passed in. * `aborted` Boolean which is set to true when calling `abort()`. There is no way at this time to continue a glob search after aborting, but you can re-use the statCache to avoid having to duplicate syscalls. * `cache` Convenience object. Each field has the following possible values: * `false` - Path does not exist * `true` - Path exists * `'FILE'` - Path exists, and is not a directory * `'DIR'` - Path exists, and is a directory * `[file, entries, ...]` - Path exists, is a directory, and the array value is the results of `fs.readdir` * `statCache` Cache of `fs.stat` results, to prevent statting the same path multiple times. * `symlinks` A record of which paths are symbolic links, which is relevant in resolving `**` patterns. * `realpathCache` An optional object which is passed to `fs.realpath` to minimize unnecessary syscalls. It is stored on the instantiated Glob object, and may be re-used. ### Events * `end` When the matching is finished, this is emitted with all the matches found. If the `nonull` option is set, and no match was found, then the `matches` list contains the original pattern. The matches are sorted, unless the `nosort` flag is set. * `match` Every time a match is found, this is emitted with the specific thing that matched. It is not deduplicated or resolved to a realpath. * `error` Emitted when an unexpected error is encountered, or whenever any fs error occurs if `options.strict` is set. * `abort` When `abort()` is called, this event is raised. ### Methods * `pause` Temporarily stop the search * `resume` Resume the search * `abort` Stop the search forever ### Options All the options that can be passed to Minimatch can also be passed to Glob to change pattern matching behavior. Also, some have been added, or have glob-specific ramifications. All options are false by default, unless otherwise noted. All options are added to the Glob object, as well. If you are running many `glob` operations, you can pass a Glob object as the `options` argument to a subsequent operation to shortcut some `stat` and `readdir` calls. At the very least, you may pass in shared `symlinks`, `statCache`, `realpathCache`, and `cache` options, so that parallel glob operations will be sped up by sharing information about the filesystem. * `cwd` The current working directory in which to search. Defaults to `process.cwd()`. * `root` The place where patterns starting with `/` will be mounted onto. Defaults to `path.resolve(options.cwd, "/")` (`/` on Unix systems, and `C:\` or some such on Windows.) * `dot` Include `.dot` files in normal matches and `globstar` matches. Note that an explicit dot in a portion of the pattern will always match dot files. * `nomount` By default, a pattern starting with a forward-slash will be "mounted" onto the root setting, so that a valid filesystem path is returned. Set this flag to disable that behavior. * `mark` Add a `/` character to directory matches. Note that this requires additional stat calls. * `nosort` Don't sort the results. * `stat` Set to true to stat *all* results. This reduces performance somewhat, and is completely unnecessary, unless `readdir` is presumed to be an untrustworthy indicator of file existence. * `silent` When an unusual error is encountered when attempting to read a directory, a warning will be printed to stderr. Set the `silent` option to true to suppress these warnings. * `strict` When an unusual error is encountered when attempting to read a directory, the process will just continue on in search of other matches. Set the `strict` option to raise an error in these cases. * `cache` See `cache` property above. Pass in a previously generated cache object to save some fs calls. * `statCache` A cache of results of filesystem information, to prevent unnecessary stat calls. While it should not normally be necessary to set this, you may pass the statCache from one glob() call to the options object of another, if you know that the filesystem will not change between calls. (See "Race Conditions" below.) * `symlinks` A cache of known symbolic links. You may pass in a previously generated `symlinks` object to save `lstat` calls when resolving `**` matches. * `sync` DEPRECATED: use `glob.sync(pattern, opts)` instead. * `nounique` In some cases, brace-expanded patterns can result in the same file showing up multiple times in the result set. By default, this implementation prevents duplicates in the result set. Set this flag to disable that behavior. * `nonull` Set to never return an empty set, instead returning a set containing the pattern itself. This is the default in glob(3). * `debug` Set to enable debug logging in minimatch and glob. * `nobrace` Do not expand `{a,b}` and `{1..3}` brace sets. * `noglobstar` Do not match `**` against multiple filenames. (Ie, treat it as a normal `*` instead.) * `noext` Do not match `+(a|b)` "extglob" patterns. * `nocase` Perform a case-insensitive match. Note: on case-insensitive filesystems, non-magic patterns will match by default, since `stat` and `readdir` will not raise errors. * `matchBase` Perform a basename-only match if the pattern does not contain any slash characters. That is, `*.js` would be treated as equivalent to `**/*.js`, matching all js files in all directories. * `nodir` Do not match directories, only files. (Note: to match *only* directories, simply put a `/` at the end of the pattern.) * `ignore` Add a pattern or an array of glob patterns to exclude matches. Note: `ignore` patterns are *always* in `dot:true` mode, regardless of any other settings. * `follow` Follow symlinked directories when expanding `**` patterns. Note that this can result in a lot of duplicate references in the presence of cyclic links. * `realpath` Set to true to call `fs.realpath` on all of the results. In the case of a symlink that cannot be resolved, the full absolute path to the matched entry is returned (though it will usually be a broken symlink) * `absolute` Set to true to always receive absolute paths for matched files. Unlike `realpath`, this also affects the values returned in the `match` event. * `fs` File-system object with Node's `fs` API. By default, the built-in `fs` module will be used. Set to a volume provided by a library like `memfs` to avoid using the "real" file-system. ## Comparisons to other fnmatch/glob implementations While strict compliance with the existing standards is a worthwhile goal, some discrepancies exist between node-glob and other implementations, and are intentional. The double-star character `**` is supported by default, unless the `noglobstar` flag is set. This is supported in the manner of bsdglob and bash 4.3, where `**` only has special significance if it is the only thing in a path part. That is, `a/**/b` will match `a/x/y/b`, but `a/**b` will not. Note that symlinked directories are not crawled as part of a `**`, though their contents may match against subsequent portions of the pattern. This prevents infinite loops and duplicates and the like. If an escaped pattern has no matches, and the `nonull` flag is set, then glob returns the pattern as-provided, rather than interpreting the character escapes. For example, `glob.match([], "\\*a\\?")` will return `"\\*a\\?"` rather than `"*a?"`. This is akin to setting the `nullglob` option in bash, except that it does not resolve escaped pattern characters. If brace expansion is not disabled, then it is performed before any other interpretation of the glob pattern. Thus, a pattern like `+(a|{b),c)}`, which would not be valid in bash or zsh, is expanded **first** into the set of `+(a|b)` and `+(a|c)`, and those patterns are checked for validity. Since those two are valid, matching proceeds. ### Comments and Negation Previously, this module let you mark a pattern as a "comment" if it started with a `#` character, or a "negated" pattern if it started with a `!` character. These options were deprecated in version 5, and removed in version 6. To specify things that should not match, use the `ignore` option. ## Windows **Please only use forward-slashes in glob expressions.** Though windows uses either `/` or `\` as its path separator, only `/` characters are used by this glob implementation. You must use forward-slashes **only** in glob expressions. Back-slashes will always be interpreted as escape characters, not path separators. Results from absolute patterns such as `/foo/*` are mounted onto the root setting using `path.join`. On windows, this will by default result in `/foo/*` matching `C:\foo\bar.txt`. ## Race Conditions Glob searching, by its very nature, is susceptible to race conditions, since it relies on directory walking and such. As a result, it is possible that a file that exists when glob looks for it may have been deleted or modified by the time it returns the result. As part of its internal implementation, this program caches all stat and readdir calls that it makes, in order to cut down on system overhead. However, this also makes it even more susceptible to races, especially if the cache or statCache objects are reused between glob calls. Users are thus advised not to use a glob result as a guarantee of filesystem state in the face of rapid changes. For the vast majority of operations, this is never a problem. ## Glob Logo Glob's logo was created by [Tanya Brassie](http://tanyabrassie.com/). Logo files can be found [here](https://github.com/isaacs/node-glob/tree/master/logo). The logo is licensed under a [Creative Commons Attribution-ShareAlike 4.0 International License](https://creativecommons.org/licenses/by-sa/4.0/). ## Contributing Any change to behavior (including bugfixes) must come with a test. Patches that fail tests or reduce performance will be rejected. ``` # to run tests npm test # to re-generate test fixtures npm run test-regen # to benchmark against bash/zsh npm run bench # to profile javascript npm run prof ```  # rechoir [](http://travis-ci.org/tkellen/js-rechoir) > Require any supported file as a node module. [](https://nodei.co/npm/rechoir/) ## What is it? This module, in conjunction with [interpret]-like objects can register any file type the npm ecosystem has a module loader for. This library is a dependency of [Liftoff]. ## API ### prepare(config, filepath, requireFrom) Look for a module loader associated with the provided file and attempt require it. If necessary, run any setup required to inject it into [require.extensions](http://nodejs.org/api/globals.html#globals_require_extensions). `config` An [interpret]-like configuration object. `filepath` A file whose type you'd like to register a module loader for. `requireFrom` An optional path to start searching for the module required to load the requested file. Defaults to the directory of `filepath`. If calling this method is successful (aka: it doesn't throw), you can now require files of the type you requested natively. An error with a `failures` property will be thrown if the module loader(s) configured for a given extension cannot be registered. If a loader is already registered, this will simply return `true`. **Note:** While rechoir will automatically load and register transpilers like `coffee-script`, you must provide a local installation. The transpilers are **not** bundled with this module. #### Usage ```js const config = require('interpret').extensions; const rechoir = require('rechoir'); rechoir.prepare(config, './test/fixtures/test.coffee'); rechoir.prepare(config, './test/fixtures/test.csv'); rechoir.prepare(config, './test/fixtures/test.toml'); console.log(require('./test/fixtures/test.coffee')); console.log(require('./test/fixtures/test.csv')); console.log(require('./test/fixtures/test.toml')); ``` [interpret]: http://github.com/tkellen/js-interpret [Liftoff]: http://github.com/tkellen/js-liftoff <p align="center"> <img width="250" src="/yargs-logo.png"> </p> <h1 align="center"> Yargs </h1> <p align="center"> <b >Yargs be a node.js library fer hearties tryin' ter parse optstrings</b> </p> <br> [![Build Status][travis-image]][travis-url] [![NPM version][npm-image]][npm-url] [![js-standard-style][standard-image]][standard-url] [![Coverage][coverage-image]][coverage-url] [![Conventional Commits][conventional-commits-image]][conventional-commits-url] [![Slack][slack-image]][slack-url] ## Description : Yargs helps you build interactive command line tools, by parsing arguments and generating an elegant user interface. It gives you: * commands and (grouped) options (`my-program.js serve --port=5000`). * a dynamically generated help menu based on your arguments. > <img width="400" src="/screen.png"> * bash-completion shortcuts for commands and options. * and [tons more](/docs/api.md). ## Installation Stable version: ```bash npm i yargs ``` Bleeding edge version with the most recent features: ```bash npm i yargs@next ``` ## Usage : ### Simple Example ```javascript #!/usr/bin/env node const {argv} = require('yargs') if (argv.ships > 3 && argv.distance < 53.5) { console.log('Plunder more riffiwobbles!') } else { console.log('Retreat from the xupptumblers!') } ``` ```bash $ ./plunder.js --ships=4 --distance=22 Plunder more riffiwobbles! $ ./plunder.js --ships 12 --distance 98.7 Retreat from the xupptumblers! ``` ### Complex Example ```javascript #!/usr/bin/env node require('yargs') // eslint-disable-line .command('serve [port]', 'start the server', (yargs) => { yargs .positional('port', { describe: 'port to bind on', default: 5000 }) }, (argv) => { if (argv.verbose) console.info(`start server on :${argv.port}`) serve(argv.port) }) .option('verbose', { alias: 'v', type: 'boolean', description: 'Run with verbose logging' }) .argv ``` Run the example above with `--help` to see the help for the application. ## TypeScript yargs has type definitions at [@types/yargs][type-definitions]. ``` npm i @types/yargs --save-dev ``` See usage examples in [docs](/docs/typescript.md). ## Webpack See usage examples of yargs with webpack in [docs](/docs/webpack.md). ## Community : Having problems? want to contribute? join our [community slack](http://devtoolscommunity.herokuapp.com). ## Documentation : ### Table of Contents * [Yargs' API](/docs/api.md) * [Examples](/docs/examples.md) * [Parsing Tricks](/docs/tricks.md) * [Stop the Parser](/docs/tricks.md#stop) * [Negating Boolean Arguments](/docs/tricks.md#negate) * [Numbers](/docs/tricks.md#numbers) * [Arrays](/docs/tricks.md#arrays) * [Objects](/docs/tricks.md#objects) * [Quotes](/docs/tricks.md#quotes) * [Advanced Topics](/docs/advanced.md) * [Composing Your App Using Commands](/docs/advanced.md#commands) * [Building Configurable CLI Apps](/docs/advanced.md#configuration) * [Customizing Yargs' Parser](/docs/advanced.md#customizing) * [Contributing](/contributing.md) [travis-url]: https://travis-ci.org/yargs/yargs [travis-image]: https://img.shields.io/travis/yargs/yargs/master.svg [npm-url]: https://www.npmjs.com/package/yargs [npm-image]: https://img.shields.io/npm/v/yargs.svg [standard-image]: https://img.shields.io/badge/code%20style-standard-brightgreen.svg [standard-url]: http://standardjs.com/ [conventional-commits-image]: https://img.shields.io/badge/Conventional%20Commits-1.0.0-yellow.svg [conventional-commits-url]: https://conventionalcommits.org/ [slack-image]: http://devtoolscommunity.herokuapp.com/badge.svg [slack-url]: http://devtoolscommunity.herokuapp.com [type-definitions]: https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/yargs [coverage-image]: https://img.shields.io/nycrc/yargs/yargs [coverage-url]: https://github.com/yargs/yargs/blob/master/.nycrc # word-wrap [](https://www.npmjs.com/package/word-wrap) [](https://npmjs.org/package/word-wrap) [](https://npmjs.org/package/word-wrap) [](https://travis-ci.org/jonschlinkert/word-wrap) > Wrap words to a specified length. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save word-wrap ``` ## Usage ```js var wrap = require('word-wrap'); wrap('Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.'); ``` Results in: ``` Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. ``` ## Options  ### options.width Type: `Number` Default: `50` The width of the text before wrapping to a new line. **Example:** ```js wrap(str, {width: 60}); ``` ### options.indent Type: `String` Default: `` (two spaces) The string to use at the beginning of each line. **Example:** ```js wrap(str, {indent: ' '}); ``` ### options.newline Type: `String` Default: `\n` The string to use at the end of each line. **Example:** ```js wrap(str, {newline: '\n\n'}); ``` ### options.escape Type: `function` Default: `function(str){return str;}` An escape function to run on each line after splitting them. **Example:** ```js var xmlescape = require('xml-escape'); wrap(str, { escape: function(string){ return xmlescape(string); } }); ``` ### options.trim Type: `Boolean` Default: `false` Trim trailing whitespace from the returned string. This option is included since `.trim()` would also strip the leading indentation from the first line. **Example:** ```js wrap(str, {trim: true}); ``` ### options.cut Type: `Boolean` Default: `false` Break a word between any two letters when the word is longer than the specified width. **Example:** ```js wrap(str, {cut: true}); ``` ## About ### Related projects * [common-words](https://www.npmjs.com/package/common-words): Updated list (JSON) of the 100 most common words in the English language. Useful for… [more](https://github.com/jonschlinkert/common-words) | [homepage](https://github.com/jonschlinkert/common-words "Updated list (JSON) of the 100 most common words in the English language. Useful for excluding these words from arrays.") * [shuffle-words](https://www.npmjs.com/package/shuffle-words): Shuffle the words in a string and optionally the letters in each word using the… [more](https://github.com/jonschlinkert/shuffle-words) | [homepage](https://github.com/jonschlinkert/shuffle-words "Shuffle the words in a string and optionally the letters in each word using the Fisher-Yates algorithm. Useful for creating test fixtures, benchmarking samples, etc.") * [unique-words](https://www.npmjs.com/package/unique-words): Return the unique words in a string or array. | [homepage](https://github.com/jonschlinkert/unique-words "Return the unique words in a string or array.") * [wordcount](https://www.npmjs.com/package/wordcount): Count the words in a string. Support for english, CJK and Cyrillic. | [homepage](https://github.com/jonschlinkert/wordcount "Count the words in a string. Support for english, CJK and Cyrillic.") ### Contributing Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). ### Contributors | **Commits** | **Contributor** | | --- | --- | | 43 | [jonschlinkert](https://github.com/jonschlinkert) | | 2 | [lordvlad](https://github.com/lordvlad) | | 2 | [hildjj](https://github.com/hildjj) | | 1 | [danilosampaio](https://github.com/danilosampaio) | | 1 | [2fd](https://github.com/2fd) | | 1 | [toddself](https://github.com/toddself) | | 1 | [wolfgang42](https://github.com/wolfgang42) | | 1 | [zachhale](https://github.com/zachhale) | ### Building docs _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` ### Running tests Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` ### Author **Jon Schlinkert** * [github/jonschlinkert](https://github.com/jonschlinkert) * [twitter/jonschlinkert](https://twitter.com/jonschlinkert) ### License Copyright © 2017, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT License](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.6.0, on June 02, 2017._ # once Only call a function once. ## usage ```javascript var once = require('once') function load (file, cb) { cb = once(cb) loader.load('file') loader.once('load', cb) loader.once('error', cb) } ``` Or add to the Function.prototype in a responsible way: ```javascript // only has to be done once require('once').proto() function load (file, cb) { cb = cb.once() loader.load('file') loader.once('load', cb) loader.once('error', cb) } ``` Ironically, the prototype feature makes this module twice as complicated as necessary. To check whether you function has been called, use `fn.called`. Once the function is called for the first time the return value of the original function is saved in `fn.value` and subsequent calls will continue to return this value. ```javascript var once = require('once') function load (cb) { cb = once(cb) var stream = createStream() stream.once('data', cb) stream.once('end', function () { if (!cb.called) cb(new Error('not found')) }) } ``` ## `once.strict(func)` Throw an error if the function is called twice. Some functions are expected to be called only once. Using `once` for them would potentially hide logical errors. In the example below, the `greet` function has to call the callback only once: ```javascript function greet (name, cb) { // return is missing from the if statement // when no name is passed, the callback is called twice if (!name) cb('Hello anonymous') cb('Hello ' + name) } function log (msg) { console.log(msg) } // this will print 'Hello anonymous' but the logical error will be missed greet(null, once(msg)) // once.strict will print 'Hello anonymous' and throw an error when the callback will be called the second time greet(null, once.strict(msg)) ``` # minizlib A fast zlib stream built on [minipass](http://npm.im/minipass) and Node.js's zlib binding. This module was created to serve the needs of [node-tar](http://npm.im/tar) and [minipass-fetch](http://npm.im/minipass-fetch). Brotli is supported in versions of node with a Brotli binding. ## How does this differ from the streams in `require('zlib')`? First, there are no convenience methods to compress or decompress a buffer. If you want those, use the built-in `zlib` module. This is only streams. That being said, Minipass streams to make it fairly easy to use as one-liners: `new zlib.Deflate().end(data).read()` will return the deflate compressed result. This module compresses and decompresses the data as fast as you feed it in. It is synchronous, and runs on the main process thread. Zlib and Brotli operations can be high CPU, but they're very fast, and doing it this way means much less bookkeeping and artificial deferral. Node's built in zlib streams are built on top of `stream.Transform`. They do the maximally safe thing with respect to consistent asynchrony, buffering, and backpressure. See [Minipass](http://npm.im/minipass) for more on the differences between Node.js core streams and Minipass streams, and the convenience methods provided by that class. ## Classes - Deflate - Inflate - Gzip - Gunzip - DeflateRaw - InflateRaw - Unzip - BrotliCompress (Node v10 and higher) - BrotliDecompress (Node v10 and higher) ## USAGE ```js const zlib = require('minizlib') const input = sourceOfCompressedData() const decode = new zlib.BrotliDecompress() const output = whereToWriteTheDecodedData() input.pipe(decode).pipe(output) ``` ## REPRODUCIBLE BUILDS To create reproducible gzip compressed files across different operating systems, set `portable: true` in the options. This causes minizlib to set the `OS` indicator in byte 9 of the extended gzip header to `0xFF` for 'unknown'. <h1 align="center">Enquirer</h1> <p align="center"> <a href="https://npmjs.org/package/enquirer"> <img src="https://img.shields.io/npm/v/enquirer.svg" alt="version"> </a> <a href="https://travis-ci.org/enquirer/enquirer"> <img src="https://img.shields.io/travis/enquirer/enquirer.svg" alt="travis"> </a> <a href="https://npmjs.org/package/enquirer"> <img src="https://img.shields.io/npm/dm/enquirer.svg" alt="downloads"> </a> </p> <br> <br> <p align="center"> <b>Stylish CLI prompts that are user-friendly, intuitive and easy to create.</b><br> <sub>>_ Prompts should be more like conversations than inquisitions▌</sub> </p> <br> <p align="center"> <sub>(Example shows Enquirer's <a href="#survey-prompt">Survey Prompt</a>)</a></sub> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/survey-prompt.gif" alt="Enquirer Survey Prompt" width="750"><br> <sub>The terminal in all examples is <a href="https://hyper.is/">Hyper</a>, theme is <a href="https://github.com/jonschlinkert/hyper-monokai-extended">hyper-monokai-extended</a>.</sub><br><br> <a href="#built-in-prompts"><strong>See more prompt examples</strong></a> </p> <br> <br> Created by [jonschlinkert](https://github.com/jonschlinkert) and [doowb](https://github.com/doowb), Enquirer is fast, easy to use, and lightweight enough for small projects, while also being powerful and customizable enough for the most advanced use cases. * **Fast** - [Loads in ~4ms](#-performance) (that's about _3-4 times faster than a [single frame of a HD movie](http://www.endmemo.com/sconvert/framespersecondframespermillisecond.php) at 60fps_) * **Lightweight** - Only one dependency, the excellent [ansi-colors](https://github.com/doowb/ansi-colors) by [Brian Woodward](https://github.com/doowb). * **Easy to implement** - Uses promises and async/await and sensible defaults to make prompts easy to create and implement. * **Easy to use** - Thrill your users with a better experience! Navigating around input and choices is a breeze. You can even create [quizzes](examples/fun/countdown.js), or [record](examples/fun/record.js) and [playback](examples/fun/play.js) key bindings to aid with tutorials and videos. * **Intuitive** - Keypress combos are available to simplify usage. * **Flexible** - All prompts can be used standalone or chained together. * **Stylish** - Easily override semantic styles and symbols for any part of the prompt. * **Extensible** - Easily create and use custom prompts by extending Enquirer's built-in [prompts](#-prompts). * **Pluggable** - Add advanced features to Enquirer using plugins. * **Validation** - Optionally validate user input with any prompt. * **Well tested** - All prompts are well-tested, and tests are easy to create without having to use brittle, hacky solutions to spy on prompts or "inject" values. * **Examples** - There are numerous [examples](examples) available to help you get started. If you like Enquirer, please consider starring or tweeting about this project to show your support. Thanks! <br> <p align="center"> <b>>_ Ready to start making prompts your users will love? ▌</b><br> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/heartbeat.gif" alt="Enquirer Select Prompt with heartbeat example" width="750"> </p> <br> <br> ## ❯ Getting started Get started with Enquirer, the most powerful and easy-to-use Node.js library for creating interactive CLI prompts. * [Install](#-install) * [Usage](#-usage) * [Enquirer](#-enquirer) * [Prompts](#-prompts) - [Built-in Prompts](#-prompts) - [Custom Prompts](#-custom-prompts) * [Key Bindings](#-key-bindings) * [Options](#-options) * [Release History](#-release-history) * [Performance](#-performance) * [About](#-about) <br> ## ❯ Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install enquirer --save ``` Install with [yarn](https://yarnpkg.com/en/): ```sh $ yarn add enquirer ``` <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/npm-install.gif" alt="Install Enquirer with NPM" width="750"> </p> _(Requires Node.js 8.6 or higher. Please let us know if you need support for an earlier version by creating an [issue](../../issues/new).)_ <br> ## ❯ Usage ### Single prompt The easiest way to get started with enquirer is to pass a [question object](#prompt-options) to the `prompt` method. ```js const { prompt } = require('enquirer'); const response = await prompt({ type: 'input', name: 'username', message: 'What is your username?' }); console.log(response); // { username: 'jonschlinkert' } ``` _(Examples with `await` need to be run inside an `async` function)_ ### Multiple prompts Pass an array of ["question" objects](#prompt-options) to run a series of prompts. ```js const response = await prompt([ { type: 'input', name: 'name', message: 'What is your name?' }, { type: 'input', name: 'username', message: 'What is your username?' } ]); console.log(response); // { name: 'Edward Chan', username: 'edwardmchan' } ``` ### Different ways to run enquirer #### 1. By importing the specific `built-in prompt` ```js const { Confirm } = require('enquirer'); const prompt = new Confirm({ name: 'question', message: 'Did you like enquirer?' }); prompt.run() .then(answer => console.log('Answer:', answer)); ``` #### 2. By passing the options to `prompt` ```js const { prompt } = require('enquirer'); prompt({ type: 'confirm', name: 'question', message: 'Did you like enquirer?' }) .then(answer => console.log('Answer:', answer)); ``` **Jump to**: [Getting Started](#-getting-started) · [Prompts](#-prompts) · [Options](#-options) · [Key Bindings](#-key-bindings) <br> ## ❯ Enquirer **Enquirer is a prompt runner** Add Enquirer to your JavaScript project with following line of code. ```js const Enquirer = require('enquirer'); ``` The main export of this library is the `Enquirer` class, which has methods and features designed to simplify running prompts. ```js const { prompt } = require('enquirer'); const question = [ { type: 'input', name: 'username', message: 'What is your username?' }, { type: 'password', name: 'password', message: 'What is your password?' } ]; let answers = await prompt(question); console.log(answers); ``` **Prompts control how values are rendered and returned** Each individual prompt is a class with special features and functionality for rendering the types of values you want to show users in the terminal, and subsequently returning the types of values you need to use in your application. **How can I customize prompts?** Below in this guide you will find information about creating [custom prompts](#-custom-prompts). For now, we'll focus on how to customize an existing prompt. All of the individual [prompt classes](#built-in-prompts) in this library are exposed as static properties on Enquirer. This allows them to be used directly without using `enquirer.prompt()`. Use this approach if you need to modify a prompt instance, or listen for events on the prompt. **Example** ```js const { Input } = require('enquirer'); const prompt = new Input({ name: 'username', message: 'What is your username?' }); prompt.run() .then(answer => console.log('Username:', answer)) .catch(console.error); ``` ### [Enquirer](index.js#L20) Create an instance of `Enquirer`. **Params** * `options` **{Object}**: (optional) Options to use with all prompts. * `answers` **{Object}**: (optional) Answers object to initialize with. **Example** ```js const Enquirer = require('enquirer'); const enquirer = new Enquirer(); ``` ### [register()](index.js#L42) Register a custom prompt type. **Params** * `type` **{String}** * `fn` **{Function|Prompt}**: `Prompt` class, or a function that returns a `Prompt` class. * `returns` **{Object}**: Returns the Enquirer instance **Example** ```js const Enquirer = require('enquirer'); const enquirer = new Enquirer(); enquirer.register('customType', require('./custom-prompt')); ``` ### [prompt()](index.js#L78) Prompt function that takes a "question" object or array of question objects, and returns an object with responses from the user. **Params** * `questions` **{Array|Object}**: Options objects for one or more prompts to run. * `returns` **{Promise}**: Promise that returns an "answers" object with the user's responses. **Example** ```js const Enquirer = require('enquirer'); const enquirer = new Enquirer(); const response = await enquirer.prompt({ type: 'input', name: 'username', message: 'What is your username?' }); console.log(response); ``` ### [use()](index.js#L160) Use an enquirer plugin. **Params** * `plugin` **{Function}**: Plugin function that takes an instance of Enquirer. * `returns` **{Object}**: Returns the Enquirer instance. **Example** ```js const Enquirer = require('enquirer'); const enquirer = new Enquirer(); const plugin = enquirer => { // do stuff to enquire instance }; enquirer.use(plugin); ``` ### [Enquirer#prompt](index.js#L210) Prompt function that takes a "question" object or array of question objects, and returns an object with responses from the user. **Params** * `questions` **{Array|Object}**: Options objects for one or more prompts to run. * `returns` **{Promise}**: Promise that returns an "answers" object with the user's responses. **Example** ```js const { prompt } = require('enquirer'); const response = await prompt({ type: 'input', name: 'username', message: 'What is your username?' }); console.log(response); ``` <br> ## ❯ Prompts This section is about Enquirer's prompts: what they look like, how they work, how to run them, available options, and how to customize the prompts or create your own prompt concept. **Getting started with Enquirer's prompts** * [Prompt](#prompt) - The base `Prompt` class used by other prompts - [Prompt Options](#prompt-options) * [Built-in prompts](#built-in-prompts) * [Prompt Types](#prompt-types) - The base `Prompt` class used by other prompts * [Custom prompts](#%E2%9D%AF-custom-prompts) - Enquirer 2.0 introduced the concept of prompt "types", with the goal of making custom prompts easier than ever to create and use. ### Prompt The base `Prompt` class is used to create all other prompts. ```js const { Prompt } = require('enquirer'); class MyCustomPrompt extends Prompt {} ``` See the documentation for [creating custom prompts](#-custom-prompts) to learn more about how this works. #### Prompt Options Each prompt takes an options object (aka "question" object), that implements the following interface: ```js { // required type: string | function, name: string | function, message: string | function | async function, // optional skip: boolean | function | async function, initial: string | function | async function, format: function | async function, result: function | async function, validate: function | async function, } ``` Each property of the options object is described below: | **Property** | **Required?** | **Type** | **Description** | | ------------ | ------------- | ------------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `type` | yes | `string\|function` | Enquirer uses this value to determine the type of prompt to run, but it's optional when prompts are run directly. | | `name` | yes | `string\|function` | Used as the key for the answer on the returned values (answers) object. | | `message` | yes | `string\|function` | The message to display when the prompt is rendered in the terminal. | | `skip` | no | `boolean\|function` | If `true` it will not ask that prompt. | | `initial` | no | `string\|function` | The default value to return if the user does not supply a value. | | `format` | no | `function` | Function to format user input in the terminal. | | `result` | no | `function` | Function to format the final submitted value before it's returned. | | `validate` | no | `function` | Function to validate the submitted value before it's returned. This function may return a boolean or a string. If a string is returned it will be used as the validation error message. | **Example usage** ```js const { prompt } = require('enquirer'); const question = { type: 'input', name: 'username', message: 'What is your username?' }; prompt(question) .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` <br> ### Built-in prompts * [AutoComplete Prompt](#autocomplete-prompt) * [BasicAuth Prompt](#basicauth-prompt) * [Confirm Prompt](#confirm-prompt) * [Form Prompt](#form-prompt) * [Input Prompt](#input-prompt) * [Invisible Prompt](#invisible-prompt) * [List Prompt](#list-prompt) * [MultiSelect Prompt](#multiselect-prompt) * [Numeral Prompt](#numeral-prompt) * [Password Prompt](#password-prompt) * [Quiz Prompt](#quiz-prompt) * [Survey Prompt](#survey-prompt) * [Scale Prompt](#scale-prompt) * [Select Prompt](#select-prompt) * [Sort Prompt](#sort-prompt) * [Snippet Prompt](#snippet-prompt) * [Toggle Prompt](#toggle-prompt) ### AutoComplete Prompt Prompt that auto-completes as the user types, and returns the selected value as a string. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/autocomplete-prompt.gif" alt="Enquirer AutoComplete Prompt" width="750"> </p> **Example Usage** ```js const { AutoComplete } = require('enquirer'); const prompt = new AutoComplete({ name: 'flavor', message: 'Pick your favorite flavor', limit: 10, initial: 2, choices: [ 'Almond', 'Apple', 'Banana', 'Blackberry', 'Blueberry', 'Cherry', 'Chocolate', 'Cinnamon', 'Coconut', 'Cranberry', 'Grape', 'Nougat', 'Orange', 'Pear', 'Pineapple', 'Raspberry', 'Strawberry', 'Vanilla', 'Watermelon', 'Wintergreen' ] }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **AutoComplete Options** | Option | Type | Default | Description | | ----------- | ---------- | ------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------ | | `highlight` | `function` | `dim` version of primary style | The color to use when "highlighting" characters in the list that match user input. | | `multiple` | `boolean` | `false` | Allow multiple choices to be selected. | | `suggest` | `function` | Greedy match, returns true if choice message contains input string. | Function that filters choices. Takes user input and a choices array, and returns a list of matching choices. | | `initial` | `number` | 0 | Preselected item in the list of choices. | | `footer` | `function` | None | Function that displays [footer text](https://github.com/enquirer/enquirer/blob/6c2819518a1e2ed284242a99a685655fbaabfa28/examples/autocomplete/option-footer.js#L10) | **Related prompts** * [Select](#select-prompt) * [MultiSelect](#multiselect-prompt) * [Survey](#survey-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### BasicAuth Prompt Prompt that asks for username and password to authenticate the user. The default implementation of `authenticate` function in `BasicAuth` prompt is to compare the username and password with the values supplied while running the prompt. The implementer is expected to override the `authenticate` function with a custom logic such as making an API request to a server to authenticate the username and password entered and expect a token back. <p align="center"> <img src="https://user-images.githubusercontent.com/13731210/61570485-7ffd9c00-aaaa-11e9-857a-d47dc7008284.gif" alt="Enquirer BasicAuth Prompt" width="750"> </p> **Example Usage** ```js const { BasicAuth } = require('enquirer'); const prompt = new BasicAuth({ name: 'password', message: 'Please enter your password', username: 'rajat-sr', password: '123', showPassword: true }); prompt .run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Confirm Prompt Prompt that returns `true` or `false`. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/confirm-prompt.gif" alt="Enquirer Confirm Prompt" width="750"> </p> **Example Usage** ```js const { Confirm } = require('enquirer'); const prompt = new Confirm({ name: 'question', message: 'Want to answer?' }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **Related prompts** * [Input](#input-prompt) * [Numeral](#numeral-prompt) * [Password](#password-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Form Prompt Prompt that allows the user to enter and submit multiple values on a single terminal screen. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/form-prompt.gif" alt="Enquirer Form Prompt" width="750"> </p> **Example Usage** ```js const { Form } = require('enquirer'); const prompt = new Form({ name: 'user', message: 'Please provide the following information:', choices: [ { name: 'firstname', message: 'First Name', initial: 'Jon' }, { name: 'lastname', message: 'Last Name', initial: 'Schlinkert' }, { name: 'username', message: 'GitHub username', initial: 'jonschlinkert' } ] }); prompt.run() .then(value => console.log('Answer:', value)) .catch(console.error); ``` **Related prompts** * [Input](#input-prompt) * [Survey](#survey-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Input Prompt Prompt that takes user input and returns a string. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/input-prompt.gif" alt="Enquirer Input Prompt" width="750"> </p> **Example Usage** ```js const { Input } = require('enquirer'); const prompt = new Input({ message: 'What is your username?', initial: 'jonschlinkert' }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.log); ``` You can use [data-store](https://github.com/jonschlinkert/data-store) to store [input history](https://github.com/enquirer/enquirer/blob/master/examples/input/option-history.js) that the user can cycle through (see [source](https://github.com/enquirer/enquirer/blob/8407dc3579123df5e6e20215078e33bb605b0c37/lib/prompts/input.js)). **Related prompts** * [Confirm](#confirm-prompt) * [Numeral](#numeral-prompt) * [Password](#password-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Invisible Prompt Prompt that takes user input, hides it from the terminal, and returns a string. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/invisible-prompt.gif" alt="Enquirer Invisible Prompt" width="750"> </p> **Example Usage** ```js const { Invisible } = require('enquirer'); const prompt = new Invisible({ name: 'secret', message: 'What is your secret?' }); prompt.run() .then(answer => console.log('Answer:', { secret: answer })) .catch(console.error); ``` **Related prompts** * [Password](#password-prompt) * [Input](#input-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### List Prompt Prompt that returns a list of values, created by splitting the user input. The default split character is `,` with optional trailing whitespace. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/list-prompt.gif" alt="Enquirer List Prompt" width="750"> </p> **Example Usage** ```js const { List } = require('enquirer'); const prompt = new List({ name: 'keywords', message: 'Type comma-separated keywords' }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **Related prompts** * [Sort](#sort-prompt) * [Select](#select-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### MultiSelect Prompt Prompt that allows the user to select multiple items from a list of options. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/multiselect-prompt.gif" alt="Enquirer MultiSelect Prompt" width="750"> </p> **Example Usage** ```js const { MultiSelect } = require('enquirer'); const prompt = new MultiSelect({ name: 'value', message: 'Pick your favorite colors', limit: 7, choices: [ { name: 'aqua', value: '#00ffff' }, { name: 'black', value: '#000000' }, { name: 'blue', value: '#0000ff' }, { name: 'fuchsia', value: '#ff00ff' }, { name: 'gray', value: '#808080' }, { name: 'green', value: '#008000' }, { name: 'lime', value: '#00ff00' }, { name: 'maroon', value: '#800000' }, { name: 'navy', value: '#000080' }, { name: 'olive', value: '#808000' }, { name: 'purple', value: '#800080' }, { name: 'red', value: '#ff0000' }, { name: 'silver', value: '#c0c0c0' }, { name: 'teal', value: '#008080' }, { name: 'white', value: '#ffffff' }, { name: 'yellow', value: '#ffff00' } ] }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); // Answer: ['aqua', 'blue', 'fuchsia'] ``` **Example key-value pairs** Optionally, pass a `result` function and use the `.map` method to return an object of key-value pairs of the selected names and values: [example](./examples/multiselect/option-result.js) ```js const { MultiSelect } = require('enquirer'); const prompt = new MultiSelect({ name: 'value', message: 'Pick your favorite colors', limit: 7, choices: [ { name: 'aqua', value: '#00ffff' }, { name: 'black', value: '#000000' }, { name: 'blue', value: '#0000ff' }, { name: 'fuchsia', value: '#ff00ff' }, { name: 'gray', value: '#808080' }, { name: 'green', value: '#008000' }, { name: 'lime', value: '#00ff00' }, { name: 'maroon', value: '#800000' }, { name: 'navy', value: '#000080' }, { name: 'olive', value: '#808000' }, { name: 'purple', value: '#800080' }, { name: 'red', value: '#ff0000' }, { name: 'silver', value: '#c0c0c0' }, { name: 'teal', value: '#008080' }, { name: 'white', value: '#ffffff' }, { name: 'yellow', value: '#ffff00' } ], result(names) { return this.map(names); } }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); // Answer: { aqua: '#00ffff', blue: '#0000ff', fuchsia: '#ff00ff' } ``` **Related prompts** * [AutoComplete](#autocomplete-prompt) * [Select](#select-prompt) * [Survey](#survey-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Numeral Prompt Prompt that takes a number as input. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/numeral-prompt.gif" alt="Enquirer Numeral Prompt" width="750"> </p> **Example Usage** ```js const { NumberPrompt } = require('enquirer'); const prompt = new NumberPrompt({ name: 'number', message: 'Please enter a number' }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **Related prompts** * [Input](#input-prompt) * [Confirm](#confirm-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Password Prompt Prompt that takes user input and masks it in the terminal. Also see the [invisible prompt](#invisible-prompt) <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/password-prompt.gif" alt="Enquirer Password Prompt" width="750"> </p> **Example Usage** ```js const { Password } = require('enquirer'); const prompt = new Password({ name: 'password', message: 'What is your password?' }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **Related prompts** * [Input](#input-prompt) * [Invisible](#invisible-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Quiz Prompt Prompt that allows the user to play multiple-choice quiz questions. <p align="center"> <img src="https://user-images.githubusercontent.com/13731210/61567561-891d4780-aa6f-11e9-9b09-3d504abd24ed.gif" alt="Enquirer Quiz Prompt" width="750"> </p> **Example Usage** ```js const { Quiz } = require('enquirer'); const prompt = new Quiz({ name: 'countries', message: 'How many countries are there in the world?', choices: ['165', '175', '185', '195', '205'], correctChoice: 3 }); prompt .run() .then(answer => { if (answer.correct) { console.log('Correct!'); } else { console.log(`Wrong! Correct answer is ${answer.correctAnswer}`); } }) .catch(console.error); ``` **Quiz Options** | Option | Type | Required | Description | | ----------- | ---------- | ---------- | ------------------------------------------------------------------------------------------------------------ | | `choices` | `array` | Yes | The list of possible answers to the quiz question. | | `correctChoice`| `number` | Yes | Index of the correct choice from the `choices` array. | **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Survey Prompt Prompt that allows the user to provide feedback for a list of questions. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/survey-prompt.gif" alt="Enquirer Survey Prompt" width="750"> </p> **Example Usage** ```js const { Survey } = require('enquirer'); const prompt = new Survey({ name: 'experience', message: 'Please rate your experience', scale: [ { name: '1', message: 'Strongly Disagree' }, { name: '2', message: 'Disagree' }, { name: '3', message: 'Neutral' }, { name: '4', message: 'Agree' }, { name: '5', message: 'Strongly Agree' } ], margin: [0, 0, 2, 1], choices: [ { name: 'interface', message: 'The website has a friendly interface.' }, { name: 'navigation', message: 'The website is easy to navigate.' }, { name: 'images', message: 'The website usually has good images.' }, { name: 'upload', message: 'The website makes it easy to upload images.' }, { name: 'colors', message: 'The website has a pleasing color palette.' } ] }); prompt.run() .then(value => console.log('ANSWERS:', value)) .catch(console.error); ``` **Related prompts** * [Scale](#scale-prompt) * [Snippet](#snippet-prompt) * [Select](#select-prompt) *** ### Scale Prompt A more compact version of the [Survey prompt](#survey-prompt), the Scale prompt allows the user to quickly provide feedback using a [Likert Scale](https://en.wikipedia.org/wiki/Likert_scale). <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/scale-prompt.gif" alt="Enquirer Scale Prompt" width="750"> </p> **Example Usage** ```js const { Scale } = require('enquirer'); const prompt = new Scale({ name: 'experience', message: 'Please rate your experience', scale: [ { name: '1', message: 'Strongly Disagree' }, { name: '2', message: 'Disagree' }, { name: '3', message: 'Neutral' }, { name: '4', message: 'Agree' }, { name: '5', message: 'Strongly Agree' } ], margin: [0, 0, 2, 1], choices: [ { name: 'interface', message: 'The website has a friendly interface.', initial: 2 }, { name: 'navigation', message: 'The website is easy to navigate.', initial: 2 }, { name: 'images', message: 'The website usually has good images.', initial: 2 }, { name: 'upload', message: 'The website makes it easy to upload images.', initial: 2 }, { name: 'colors', message: 'The website has a pleasing color palette.', initial: 2 } ] }); prompt.run() .then(value => console.log('ANSWERS:', value)) .catch(console.error); ``` **Related prompts** * [AutoComplete](#autocomplete-prompt) * [Select](#select-prompt) * [Survey](#survey-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Select Prompt Prompt that allows the user to select from a list of options. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/select-prompt.gif" alt="Enquirer Select Prompt" width="750"> </p> **Example Usage** ```js const { Select } = require('enquirer'); const prompt = new Select({ name: 'color', message: 'Pick a flavor', choices: ['apple', 'grape', 'watermelon', 'cherry', 'orange'] }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **Related prompts** * [AutoComplete](#autocomplete-prompt) * [MultiSelect](#multiselect-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Sort Prompt Prompt that allows the user to sort items in a list. **Example** In this [example](https://github.com/enquirer/enquirer/raw/master/examples/sort/prompt.js), custom styling is applied to the returned values to make it easier to see what's happening. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/sort-prompt.gif" alt="Enquirer Sort Prompt" width="750"> </p> **Example Usage** ```js const colors = require('ansi-colors'); const { Sort } = require('enquirer'); const prompt = new Sort({ name: 'colors', message: 'Sort the colors in order of preference', hint: 'Top is best, bottom is worst', numbered: true, choices: ['red', 'white', 'green', 'cyan', 'yellow'].map(n => ({ name: n, message: colors[n](n) })) }); prompt.run() .then(function(answer = []) { console.log(answer); console.log('Your preferred order of colors is:'); console.log(answer.map(key => colors[key](key)).join('\n')); }) .catch(console.error); ``` **Related prompts** * [List](#list-prompt) * [Select](#select-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Snippet Prompt Prompt that allows the user to replace placeholders in a snippet of code or text. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/snippet-prompt.gif" alt="Prompts" width="750"> </p> **Example Usage** ```js const semver = require('semver'); const { Snippet } = require('enquirer'); const prompt = new Snippet({ name: 'username', message: 'Fill out the fields in package.json', required: true, fields: [ { name: 'author_name', message: 'Author Name' }, { name: 'version', validate(value, state, item, index) { if (item && item.name === 'version' && !semver.valid(value)) { return prompt.styles.danger('version should be a valid semver value'); } return true; } } ], template: `{ "name": "\${name}", "description": "\${description}", "version": "\${version}", "homepage": "https://github.com/\${username}/\${name}", "author": "\${author_name} (https://github.com/\${username})", "repository": "\${username}/\${name}", "license": "\${license:ISC}" } ` }); prompt.run() .then(answer => console.log('Answer:', answer.result)) .catch(console.error); ``` **Related prompts** * [Survey](#survey-prompt) * [AutoComplete](#autocomplete-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Toggle Prompt Prompt that allows the user to toggle between two values then returns `true` or `false`. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/toggle-prompt.gif" alt="Enquirer Toggle Prompt" width="750"> </p> **Example Usage** ```js const { Toggle } = require('enquirer'); const prompt = new Toggle({ message: 'Want to answer?', enabled: 'Yep', disabled: 'Nope' }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **Related prompts** * [Confirm](#confirm-prompt) * [Input](#input-prompt) * [Sort](#sort-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Prompt Types There are 5 (soon to be 6!) type classes: * [ArrayPrompt](#arrayprompt) - [Options](#options) - [Properties](#properties) - [Methods](#methods) - [Choices](#choices) - [Defining choices](#defining-choices) - [Choice properties](#choice-properties) - [Related prompts](#related-prompts) * [AuthPrompt](#authprompt) * [BooleanPrompt](#booleanprompt) * DatePrompt (Coming Soon!) * [NumberPrompt](#numberprompt) * [StringPrompt](#stringprompt) Each type is a low-level class that may be used as a starting point for creating higher level prompts. Continue reading to learn how. ### ArrayPrompt The `ArrayPrompt` class is used for creating prompts that display a list of choices in the terminal. For example, Enquirer uses this class as the basis for the [Select](#select) and [Survey](#survey) prompts. #### Options In addition to the [options](#options) available to all prompts, Array prompts also support the following options. | **Option** | **Required?** | **Type** | **Description** | | ----------- | ------------- | --------------- | ----------------------------------------------------------------------------------------------------------------------- | | `autofocus` | `no` | `string\|number` | The index or name of the choice that should have focus when the prompt loads. Only one choice may have focus at a time. | | | `stdin` | `no` | `stream` | The input stream to use for emitting keypress events. Defaults to `process.stdin`. | | `stdout` | `no` | `stream` | The output stream to use for writing the prompt to the terminal. Defaults to `process.stdout`. | | | #### Properties Array prompts have the following instance properties and getters. | **Property name** | **Type** | **Description** | | ----------------- | --------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `choices` | `array` | Array of choices that have been normalized from choices passed on the prompt options. | | `cursor` | `number` | Position of the cursor relative to the _user input (string)_. | | `enabled` | `array` | Returns an array of enabled choices. | | `focused` | `array` | Returns the currently selected choice in the visible list of choices. This is similar to the concept of focus in HTML and CSS. Focused choices are always visible (on-screen). When a list of choices is longer than the list of visible choices, and an off-screen choice is _focused_, the list will scroll to the focused choice and re-render. | | `focused` | Gets the currently selected choice. Equivalent to `prompt.choices[prompt.index]`. | | `index` | `number` | Position of the pointer in the _visible list (array) of choices_. | | `limit` | `number` | The number of choices to display on-screen. | | `selected` | `array` | Either a list of enabled choices (when `options.multiple` is true) or the currently focused choice. | | `visible` | `string` | | #### Methods | **Method** | **Description** | | ------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `pointer()` | Returns the visual symbol to use to identify the choice that currently has focus. The `❯` symbol is often used for this. The pointer is not always visible, as with the `autocomplete` prompt. | | `indicator()` | Returns the visual symbol that indicates whether or not a choice is checked/enabled. | | `focus()` | Sets focus on a choice, if it can be focused. | #### Choices Array prompts support the `choices` option, which is the array of choices users will be able to select from when rendered in the terminal. **Type**: `string|object` **Example** ```js const { prompt } = require('enquirer'); const questions = [{ type: 'select', name: 'color', message: 'Favorite color?', initial: 1, choices: [ { name: 'red', message: 'Red', value: '#ff0000' }, //<= choice object { name: 'green', message: 'Green', value: '#00ff00' }, //<= choice object { name: 'blue', message: 'Blue', value: '#0000ff' } //<= choice object ] }]; let answers = await prompt(questions); console.log('Answer:', answers.color); ``` #### Defining choices Whether defined as a string or object, choices are normalized to the following interface: ```js { name: string; message: string | undefined; value: string | undefined; hint: string | undefined; disabled: boolean | string | undefined; } ``` **Example** ```js const question = { name: 'fruit', message: 'Favorite fruit?', choices: ['Apple', 'Orange', 'Raspberry'] }; ``` Normalizes to the following when the prompt is run: ```js const question = { name: 'fruit', message: 'Favorite fruit?', choices: [ { name: 'Apple', message: 'Apple', value: 'Apple' }, { name: 'Orange', message: 'Orange', value: 'Orange' }, { name: 'Raspberry', message: 'Raspberry', value: 'Raspberry' } ] }; ``` #### Choice properties The following properties are supported on `choice` objects. | **Option** | **Type** | **Description** | | ----------- | ----------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `name` | `string` | The unique key to identify a choice | | `message` | `string` | The message to display in the terminal. `name` is used when this is undefined. | | `value` | `string` | Value to associate with the choice. Useful for creating key-value pairs from user choices. `name` is used when this is undefined. | | `choices` | `array` | Array of "child" choices. | | `hint` | `string` | Help message to display next to a choice. | | `role` | `string` | Determines how the choice will be displayed. Currently the only role supported is `separator`. Additional roles may be added in the future (like `heading`, etc). Please create a [feature request] | | `enabled` | `boolean` | Enabled a choice by default. This is only supported when `options.multiple` is true or on prompts that support multiple choices, like [MultiSelect](#-multiselect). | | `disabled` | `boolean\|string` | Disable a choice so that it cannot be selected. This value may either be `true`, `false`, or a message to display. | | `indicator` | `string\|function` | Custom indicator to render for a choice (like a check or radio button). | #### Related prompts * [AutoComplete](#autocomplete-prompt) * [Form](#form-prompt) * [MultiSelect](#multiselect-prompt) * [Select](#select-prompt) * [Survey](#survey-prompt) *** ### AuthPrompt The `AuthPrompt` is used to create prompts to log in user using any authentication method. For example, Enquirer uses this class as the basis for the [BasicAuth Prompt](#basicauth-prompt). You can also find prompt examples in `examples/auth/` folder that utilizes `AuthPrompt` to create OAuth based authentication prompt or a prompt that authenticates using time-based OTP, among others. `AuthPrompt` has a factory function that creates an instance of `AuthPrompt` class and it expects an `authenticate` function, as an argument, which overrides the `authenticate` function of the `AuthPrompt` class. #### Methods | **Method** | **Description** | | ------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `authenticate()` | Contain all the authentication logic. This function should be overridden to implement custom authentication logic. The default `authenticate` function throws an error if no other function is provided. | #### Choices Auth prompt supports the `choices` option, which is the similar to the choices used in [Form Prompt](#form-prompt). **Example** ```js const { AuthPrompt } = require('enquirer'); function authenticate(value, state) { if (value.username === this.options.username && value.password === this.options.password) { return true; } return false; } const CustomAuthPrompt = AuthPrompt.create(authenticate); const prompt = new CustomAuthPrompt({ name: 'password', message: 'Please enter your password', username: 'rajat-sr', password: '1234567', choices: [ { name: 'username', message: 'username' }, { name: 'password', message: 'password' } ] }); prompt .run() .then(answer => console.log('Authenticated?', answer)) .catch(console.error); ``` #### Related prompts * [BasicAuth Prompt](#basicauth-prompt) *** ### BooleanPrompt The `BooleanPrompt` class is used for creating prompts that display and return a boolean value. ```js const { BooleanPrompt } = require('enquirer'); const prompt = new BooleanPrompt({ header: '========================', message: 'Do you love enquirer?', footer: '========================', }); prompt.run() .then(answer => console.log('Selected:', answer)) .catch(console.error); ``` **Returns**: `boolean` *** ### NumberPrompt The `NumberPrompt` class is used for creating prompts that display and return a numerical value. ```js const { NumberPrompt } = require('enquirer'); const prompt = new NumberPrompt({ header: '************************', message: 'Input the Numbers:', footer: '************************', }); prompt.run() .then(answer => console.log('Numbers are:', answer)) .catch(console.error); ``` **Returns**: `string|number` (number, or number formatted as a string) *** ### StringPrompt The `StringPrompt` class is used for creating prompts that display and return a string value. ```js const { StringPrompt } = require('enquirer'); const prompt = new StringPrompt({ header: '************************', message: 'Input the String:', footer: '************************' }); prompt.run() .then(answer => console.log('String is:', answer)) .catch(console.error); ``` **Returns**: `string` <br> ## ❯ Custom prompts With Enquirer 2.0, custom prompts are easier than ever to create and use. **How do I create a custom prompt?** Custom prompts are created by extending either: * Enquirer's `Prompt` class * one of the built-in [prompts](#-prompts), or * low-level [types](#-types). <!-- Example: HaiKarate Custom Prompt --> ```js const { Prompt } = require('enquirer'); class HaiKarate extends Prompt { constructor(options = {}) { super(options); this.value = options.initial || 0; this.cursorHide(); } up() { this.value++; this.render(); } down() { this.value--; this.render(); } render() { this.clear(); // clear previously rendered prompt from the terminal this.write(`${this.state.message}: ${this.value}`); } } // Use the prompt by creating an instance of your custom prompt class. const prompt = new HaiKarate({ message: 'How many sprays do you want?', initial: 10 }); prompt.run() .then(answer => console.log('Sprays:', answer)) .catch(console.error); ``` If you want to be able to specify your prompt by `type` so that it may be used alongside other prompts, you will need to first create an instance of `Enquirer`. ```js const Enquirer = require('enquirer'); const enquirer = new Enquirer(); ``` Then use the `.register()` method to add your custom prompt. ```js enquirer.register('haikarate', HaiKarate); ``` Now you can do the following when defining "questions". ```js let spritzer = require('cologne-drone'); let answers = await enquirer.prompt([ { type: 'haikarate', name: 'cologne', message: 'How many sprays do you need?', initial: 10, async onSubmit(name, value) { await spritzer.activate(value); //<= activate drone return value; } } ]); ``` <br> ## ❯ Key Bindings ### All prompts These key combinations may be used with all prompts. | **command** | **description** | | -------------------------------- | -------------------------------------- | | <kbd>ctrl</kbd> + <kbd>c</kbd> | Cancel the prompt. | | <kbd>ctrl</kbd> + <kbd>g</kbd> | Reset the prompt to its initial state. | <br> ### Move cursor These combinations may be used on prompts that support user input (eg. [input prompt](#input-prompt), [password prompt](#password-prompt), and [invisible prompt](#invisible-prompt)). | **command** | **description** | | ------------------------------ | ---------------------------------------- | | <kbd>left</kbd> | Move the cursor back one character. | | <kbd>right</kbd> | Move the cursor forward one character. | | <kbd>ctrl</kbd> + <kbd>a</kbd> | Move cursor to the start of the line | | <kbd>ctrl</kbd> + <kbd>e</kbd> | Move cursor to the end of the line | | <kbd>ctrl</kbd> + <kbd>b</kbd> | Move cursor back one character | | <kbd>ctrl</kbd> + <kbd>f</kbd> | Move cursor forward one character | | <kbd>ctrl</kbd> + <kbd>x</kbd> | Toggle between first and cursor position | <br> ### Edit Input These key combinations may be used on prompts that support user input (eg. [input prompt](#input-prompt), [password prompt](#password-prompt), and [invisible prompt](#invisible-prompt)). | **command** | **description** | | ------------------------------ | ---------------------------------------- | | <kbd>ctrl</kbd> + <kbd>a</kbd> | Move cursor to the start of the line | | <kbd>ctrl</kbd> + <kbd>e</kbd> | Move cursor to the end of the line | | <kbd>ctrl</kbd> + <kbd>b</kbd> | Move cursor back one character | | <kbd>ctrl</kbd> + <kbd>f</kbd> | Move cursor forward one character | | <kbd>ctrl</kbd> + <kbd>x</kbd> | Toggle between first and cursor position | <br> | **command (Mac)** | **command (Windows)** | **description** | | ----------------------------------- | -------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------- | | <kbd>delete</kbd> | <kbd>backspace</kbd> | Delete one character to the left. | | <kbd>fn</kbd> + <kbd>delete</kbd> | <kbd>delete</kbd> | Delete one character to the right. | | <kbd>option</kbd> + <kbd>up</kbd> | <kbd>alt</kbd> + <kbd>up</kbd> | Scroll to the previous item in history ([Input prompt](#input-prompt) only, when [history is enabled](examples/input/option-history.js)). | | <kbd>option</kbd> + <kbd>down</kbd> | <kbd>alt</kbd> + <kbd>down</kbd> | Scroll to the next item in history ([Input prompt](#input-prompt) only, when [history is enabled](examples/input/option-history.js)). | ### Select choices These key combinations may be used on prompts that support _multiple_ choices, such as the [multiselect prompt](#multiselect-prompt), or the [select prompt](#select-prompt) when the `multiple` options is true. | **command** | **description** | | ----------------- | -------------------------------------------------------------------------------------------------------------------- | | <kbd>space</kbd> | Toggle the currently selected choice when `options.multiple` is true. | | <kbd>number</kbd> | Move the pointer to the choice at the given index. Also toggles the selected choice when `options.multiple` is true. | | <kbd>a</kbd> | Toggle all choices to be enabled or disabled. | | <kbd>i</kbd> | Invert the current selection of choices. | | <kbd>g</kbd> | Toggle the current choice group. | <br> ### Hide/show choices | **command** | **description** | | ------------------------------- | ---------------------------------------------- | | <kbd>fn</kbd> + <kbd>up</kbd> | Decrease the number of visible choices by one. | | <kbd>fn</kbd> + <kbd>down</kbd> | Increase the number of visible choices by one. | <br> ### Move/lock Pointer | **command** | **description** | | ---------------------------------- | -------------------------------------------------------------------------------------------------------------------- | | <kbd>number</kbd> | Move the pointer to the choice at the given index. Also toggles the selected choice when `options.multiple` is true. | | <kbd>up</kbd> | Move the pointer up. | | <kbd>down</kbd> | Move the pointer down. | | <kbd>ctrl</kbd> + <kbd>a</kbd> | Move the pointer to the first _visible_ choice. | | <kbd>ctrl</kbd> + <kbd>e</kbd> | Move the pointer to the last _visible_ choice. | | <kbd>shift</kbd> + <kbd>up</kbd> | Scroll up one choice without changing pointer position (locks the pointer while scrolling). | | <kbd>shift</kbd> + <kbd>down</kbd> | Scroll down one choice without changing pointer position (locks the pointer while scrolling). | <br> | **command (Mac)** | **command (Windows)** | **description** | | -------------------------------- | --------------------- | ---------------------------------------------------------- | | <kbd>fn</kbd> + <kbd>left</kbd> | <kbd>home</kbd> | Move the pointer to the first choice in the choices array. | | <kbd>fn</kbd> + <kbd>right</kbd> | <kbd>end</kbd> | Move the pointer to the last choice in the choices array. | <br> ## ❯ Release History Please see [CHANGELOG.md](CHANGELOG.md). ## ❯ Performance ### System specs MacBook Pro, Intel Core i7, 2.5 GHz, 16 GB. ### Load time Time it takes for the module to load the first time (average of 3 runs): ``` enquirer: 4.013ms inquirer: 286.717ms ``` <br> ## ❯ About <details> <summary><strong>Contributing</strong></summary> Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). ### Todo We're currently working on documentation for the following items. Please star and watch the repository for updates! * [ ] Customizing symbols * [ ] Customizing styles (palette) * [ ] Customizing rendered input * [ ] Customizing returned values * [ ] Customizing key bindings * [ ] Question validation * [ ] Choice validation * [ ] Skipping questions * [ ] Async choices * [ ] Async timers: loaders, spinners and other animations * [ ] Links to examples </details> <details> <summary><strong>Running Tests</strong></summary> Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` ```sh $ yarn && yarn test ``` </details> <details> <summary><strong>Building docs</strong></summary> _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` </details> #### Contributors | **Commits** | **Contributor** | | --- | --- | | 283 | [jonschlinkert](https://github.com/jonschlinkert) | | 82 | [doowb](https://github.com/doowb) | | 32 | [rajat-sr](https://github.com/rajat-sr) | | 20 | [318097](https://github.com/318097) | | 15 | [g-plane](https://github.com/g-plane) | | 12 | [pixelass](https://github.com/pixelass) | | 5 | [adityavyas611](https://github.com/adityavyas611) | | 5 | [satotake](https://github.com/satotake) | | 3 | [tunnckoCore](https://github.com/tunnckoCore) | | 3 | [Ovyerus](https://github.com/Ovyerus) | | 3 | [sw-yx](https://github.com/sw-yx) | | 2 | [DanielRuf](https://github.com/DanielRuf) | | 2 | [GabeL7r](https://github.com/GabeL7r) | | 1 | [AlCalzone](https://github.com/AlCalzone) | | 1 | [hipstersmoothie](https://github.com/hipstersmoothie) | | 1 | [danieldelcore](https://github.com/danieldelcore) | | 1 | [ImgBotApp](https://github.com/ImgBotApp) | | 1 | [jsonkao](https://github.com/jsonkao) | | 1 | [knpwrs](https://github.com/knpwrs) | | 1 | [yeskunall](https://github.com/yeskunall) | | 1 | [mischah](https://github.com/mischah) | | 1 | [renarsvilnis](https://github.com/renarsvilnis) | | 1 | [sbugert](https://github.com/sbugert) | | 1 | [stephencweiss](https://github.com/stephencweiss) | | 1 | [skellock](https://github.com/skellock) | | 1 | [whxaxes](https://github.com/whxaxes) | #### Author **Jon Schlinkert** * [GitHub Profile](https://github.com/jonschlinkert) * [Twitter Profile](https://twitter.com/jonschlinkert) * [LinkedIn Profile](https://linkedin.com/in/jonschlinkert) #### Credit Thanks to [derhuerst](https://github.com/derhuerst), creator of prompt libraries such as [prompt-skeleton](https://github.com/derhuerst/prompt-skeleton), which influenced some of the concepts we used in our prompts. #### License Copyright © 2018-present, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT License](LICENSE). argparse ======== [](http://travis-ci.org/nodeca/argparse) [](https://www.npmjs.org/package/argparse) CLI arguments parser for node.js. Javascript port of python's [argparse](http://docs.python.org/dev/library/argparse.html) module (original version 3.2). That's a full port, except some very rare options, recorded in issue tracker. **NB. Difference with original.** - Method names changed to camelCase. See [generated docs](http://nodeca.github.com/argparse/). - Use `defaultValue` instead of `default`. - Use `argparse.Const.REMAINDER` instead of `argparse.REMAINDER`, and similarly for constant values `OPTIONAL`, `ZERO_OR_MORE`, and `ONE_OR_MORE` (aliases for `nargs` values `'?'`, `'*'`, `'+'`, respectively), and `SUPPRESS`. Example ======= test.js file: ```javascript #!/usr/bin/env node 'use strict'; var ArgumentParser = require('../lib/argparse').ArgumentParser; var parser = new ArgumentParser({ version: '0.0.1', addHelp:true, description: 'Argparse example' }); parser.addArgument( [ '-f', '--foo' ], { help: 'foo bar' } ); parser.addArgument( [ '-b', '--bar' ], { help: 'bar foo' } ); parser.addArgument( '--baz', { help: 'baz bar' } ); var args = parser.parseArgs(); console.dir(args); ``` Display help: ``` $ ./test.js -h usage: example.js [-h] [-v] [-f FOO] [-b BAR] [--baz BAZ] Argparse example Optional arguments: -h, --help Show this help message and exit. -v, --version Show program's version number and exit. -f FOO, --foo FOO foo bar -b BAR, --bar BAR bar foo --baz BAZ baz bar ``` Parse arguments: ``` $ ./test.js -f=3 --bar=4 --baz 5 { foo: '3', bar: '4', baz: '5' } ``` More [examples](https://github.com/nodeca/argparse/tree/master/examples). ArgumentParser objects ====================== ``` new ArgumentParser({parameters hash}); ``` Creates a new ArgumentParser object. **Supported params:** - ```description``` - Text to display before the argument help. - ```epilog``` - Text to display after the argument help. - ```addHelp``` - Add a -h/–help option to the parser. (default: true) - ```argumentDefault``` - Set the global default value for arguments. (default: null) - ```parents``` - A list of ArgumentParser objects whose arguments should also be included. - ```prefixChars``` - The set of characters that prefix optional arguments. (default: ‘-‘) - ```formatterClass``` - A class for customizing the help output. - ```prog``` - The name of the program (default: `path.basename(process.argv[1])`) - ```usage``` - The string describing the program usage (default: generated) - ```conflictHandler``` - Usually unnecessary, defines strategy for resolving conflicting optionals. **Not supported yet** - ```fromfilePrefixChars``` - The set of characters that prefix files from which additional arguments should be read. Details in [original ArgumentParser guide](http://docs.python.org/dev/library/argparse.html#argumentparser-objects) addArgument() method ==================== ``` ArgumentParser.addArgument(name or flag or [name] or [flags...], {options}) ``` Defines how a single command-line argument should be parsed. - ```name or flag or [name] or [flags...]``` - Either a positional name (e.g., `'foo'`), a single option (e.g., `'-f'` or `'--foo'`), an array of a single positional name (e.g., `['foo']`), or an array of options (e.g., `['-f', '--foo']`). Options: - ```action``` - The basic type of action to be taken when this argument is encountered at the command line. - ```nargs```- The number of command-line arguments that should be consumed. - ```constant``` - A constant value required by some action and nargs selections. - ```defaultValue``` - The value produced if the argument is absent from the command line. - ```type``` - The type to which the command-line argument should be converted. - ```choices``` - A container of the allowable values for the argument. - ```required``` - Whether or not the command-line option may be omitted (optionals only). - ```help``` - A brief description of what the argument does. - ```metavar``` - A name for the argument in usage messages. - ```dest``` - The name of the attribute to be added to the object returned by parseArgs(). Details in [original add_argument guide](http://docs.python.org/dev/library/argparse.html#the-add-argument-method) Action (some details) ================ ArgumentParser objects associate command-line arguments with actions. These actions can do just about anything with the command-line arguments associated with them, though most actions simply add an attribute to the object returned by parseArgs(). The action keyword argument specifies how the command-line arguments should be handled. The supported actions are: - ```store``` - Just stores the argument’s value. This is the default action. - ```storeConst``` - Stores value, specified by the const keyword argument. (Note that the const keyword argument defaults to the rather unhelpful None.) The 'storeConst' action is most commonly used with optional arguments, that specify some sort of flag. - ```storeTrue``` and ```storeFalse``` - Stores values True and False respectively. These are special cases of 'storeConst'. - ```append``` - Stores a list, and appends each argument value to the list. This is useful to allow an option to be specified multiple times. - ```appendConst``` - Stores a list, and appends value, specified by the const keyword argument to the list. (Note, that the const keyword argument defaults is None.) The 'appendConst' action is typically used when multiple arguments need to store constants to the same list. - ```count``` - Counts the number of times a keyword argument occurs. For example, used for increasing verbosity levels. - ```help``` - Prints a complete help message for all the options in the current parser and then exits. By default a help action is automatically added to the parser. See ArgumentParser for details of how the output is created. - ```version``` - Prints version information and exit. Expects a `version=` keyword argument in the addArgument() call. Details in [original action guide](http://docs.python.org/dev/library/argparse.html#action) Sub-commands ============ ArgumentParser.addSubparsers() Many programs split their functionality into a number of sub-commands, for example, the svn program can invoke sub-commands like `svn checkout`, `svn update`, and `svn commit`. Splitting up functionality this way can be a particularly good idea when a program performs several different functions which require different kinds of command-line arguments. `ArgumentParser` supports creation of such sub-commands with `addSubparsers()` method. The `addSubparsers()` method is normally called with no arguments and returns an special action object. This object has a single method `addParser()`, which takes a command name and any `ArgumentParser` constructor arguments, and returns an `ArgumentParser` object that can be modified as usual. Example: sub_commands.js ```javascript #!/usr/bin/env node 'use strict'; var ArgumentParser = require('../lib/argparse').ArgumentParser; var parser = new ArgumentParser({ version: '0.0.1', addHelp:true, description: 'Argparse examples: sub-commands', }); var subparsers = parser.addSubparsers({ title:'subcommands', dest:"subcommand_name" }); var bar = subparsers.addParser('c1', {addHelp:true}); bar.addArgument( [ '-f', '--foo' ], { action: 'store', help: 'foo3 bar3' } ); var bar = subparsers.addParser( 'c2', {aliases:['co'], addHelp:true} ); bar.addArgument( [ '-b', '--bar' ], { action: 'store', type: 'int', help: 'foo3 bar3' } ); var args = parser.parseArgs(); console.dir(args); ``` Details in [original sub-commands guide](http://docs.python.org/dev/library/argparse.html#sub-commands) Contributors ============ - [Eugene Shkuropat](https://github.com/shkuropat) - [Paul Jacobson](https://github.com/hpaulj) [others](https://github.com/nodeca/argparse/graphs/contributors) License ======= Copyright (c) 2012 [Vitaly Puzrin](https://github.com/puzrin). Released under the MIT license. See [LICENSE](https://github.com/nodeca/argparse/blob/master/LICENSE) for details. # assemblyscript-json   JSON encoder / decoder for AssemblyScript. Special thanks to https://github.com/MaxGraey/bignum.wasm for basic unit testing infra for AssemblyScript. ## Installation `assemblyscript-json` is available as a [npm package](https://www.npmjs.com/package/assemblyscript-json). You can install `assemblyscript-json` in your AssemblyScript project by running: `npm install --save assemblyscript-json` ## Usage ### Parsing JSON ```typescript import { JSON } from "assemblyscript-json"; // Parse an object using the JSON object let jsonObj: JSON.Obj = <JSON.Obj>(JSON.parse('{"hello": "world", "value": 24}')); // We can then use the .getX functions to read from the object if you know it's type // This will return the appropriate JSON.X value if the key exists, or null if the key does not exist let worldOrNull: JSON.Str | null = jsonObj.getString("hello"); // This will return a JSON.Str or null if (worldOrNull != null) { // use .valueOf() to turn the high level JSON.Str type into a string let world: string = worldOrNull.valueOf(); } let numOrNull: JSON.Num | null = jsonObj.getNum("value"); if (numOrNull != null) { // use .valueOf() to turn the high level JSON.Num type into a f64 let value: f64 = numOrNull.valueOf(); } // If you don't know the value type, get the parent JSON.Value let valueOrNull: JSON.Value | null = jsonObj.getValue("hello"); if (valueOrNull != null) { let value = <JSON.Value>valueOrNull; // Next we could figure out what type we are if(value.isString) { // value.isString would be true, so we can cast to a string let innerString = (<JSON.Str>value).valueOf(); let jsonString = (<JSON.Str>value).stringify(); // Do something with string value } } ``` ### Encoding JSON ```typescript import { JSONEncoder } from "assemblyscript-json"; // Create encoder let encoder = new JSONEncoder(); // Construct necessary object encoder.pushObject("obj"); encoder.setInteger("int", 10); encoder.setString("str", ""); encoder.popObject(); // Get serialized data let json: Uint8Array = encoder.serialize(); // Or get serialized data as string let jsonString: string = encoder.stringify(); assert(jsonString, '"obj": {"int": 10, "str": ""}'); // True! ``` ### Custom JSON Deserializers ```typescript import { JSONDecoder, JSONHandler } from "assemblyscript-json"; // Events need to be received by custom object extending JSONHandler. // NOTE: All methods are optional to implement. class MyJSONEventsHandler extends JSONHandler { setString(name: string, value: string): void { // Handle field } setBoolean(name: string, value: bool): void { // Handle field } setNull(name: string): void { // Handle field } setInteger(name: string, value: i64): void { // Handle field } setFloat(name: string, value: f64): void { // Handle field } pushArray(name: string): bool { // Handle array start // true means that nested object needs to be traversed, false otherwise // Note that returning false means JSONDecoder.startIndex need to be updated by handler return true; } popArray(): void { // Handle array end } pushObject(name: string): bool { // Handle object start // true means that nested object needs to be traversed, false otherwise // Note that returning false means JSONDecoder.startIndex need to be updated by handler return true; } popObject(): void { // Handle object end } } // Create decoder let decoder = new JSONDecoder<MyJSONEventsHandler>(new MyJSONEventsHandler()); // Create a byte buffer of our JSON. NOTE: Deserializers work on UTF8 string buffers. let jsonString = '{"hello": "world"}'; let jsonBuffer = Uint8Array.wrap(String.UTF8.encode(jsonString)); // Parse JSON decoder.deserialize(jsonBuffer); // This will send events to MyJSONEventsHandler ``` Feel free to look through the [tests](https://github.com/nearprotocol/assemblyscript-json/tree/master/assembly/__tests__) for more usage examples. ## Reference Documentation Reference API Documentation can be found in the [docs directory](./docs). ## License [MIT](./LICENSE) # sprintf.js **sprintf.js** is a complete open source JavaScript sprintf implementation for the *browser* and *node.js*. Its prototype is simple: string sprintf(string format , [mixed arg1 [, mixed arg2 [ ,...]]]) The placeholders in the format string are marked by `%` and are followed by one or more of these elements, in this order: * An optional number followed by a `$` sign that selects which argument index to use for the value. If not specified, arguments will be placed in the same order as the placeholders in the input string. * An optional `+` sign that forces to preceed the result with a plus or minus sign on numeric values. By default, only the `-` sign is used on negative numbers. * An optional padding specifier that says what character to use for padding (if specified). Possible values are `0` or any other character precedeed by a `'` (single quote). The default is to pad with *spaces*. * An optional `-` sign, that causes sprintf to left-align the result of this placeholder. The default is to right-align the result. * An optional number, that says how many characters the result should have. If the value to be returned is shorter than this number, the result will be padded. When used with the `j` (JSON) type specifier, the padding length specifies the tab size used for indentation. * An optional precision modifier, consisting of a `.` (dot) followed by a number, that says how many digits should be displayed for floating point numbers. When used with the `g` type specifier, it specifies the number of significant digits. When used on a string, it causes the result to be truncated. * A type specifier that can be any of: * `%` — yields a literal `%` character * `b` — yields an integer as a binary number * `c` — yields an integer as the character with that ASCII value * `d` or `i` — yields an integer as a signed decimal number * `e` — yields a float using scientific notation * `u` — yields an integer as an unsigned decimal number * `f` — yields a float as is; see notes on precision above * `g` — yields a float as is; see notes on precision above * `o` — yields an integer as an octal number * `s` — yields a string as is * `x` — yields an integer as a hexadecimal number (lower-case) * `X` — yields an integer as a hexadecimal number (upper-case) * `j` — yields a JavaScript object or array as a JSON encoded string ## JavaScript `vsprintf` `vsprintf` is the same as `sprintf` except that it accepts an array of arguments, rather than a variable number of arguments: vsprintf("The first 4 letters of the english alphabet are: %s, %s, %s and %s", ["a", "b", "c", "d"]) ## Argument swapping You can also swap the arguments. That is, the order of the placeholders doesn't have to match the order of the arguments. You can do that by simply indicating in the format string which arguments the placeholders refer to: sprintf("%2$s %3$s a %1$s", "cracker", "Polly", "wants") And, of course, you can repeat the placeholders without having to increase the number of arguments. ## Named arguments Format strings may contain replacement fields rather than positional placeholders. Instead of referring to a certain argument, you can now refer to a certain key within an object. Replacement fields are surrounded by rounded parentheses - `(` and `)` - and begin with a keyword that refers to a key: var user = { name: "Dolly" } sprintf("Hello %(name)s", user) // Hello Dolly Keywords in replacement fields can be optionally followed by any number of keywords or indexes: var users = [ {name: "Dolly"}, {name: "Molly"}, {name: "Polly"} ] sprintf("Hello %(users[0].name)s, %(users[1].name)s and %(users[2].name)s", {users: users}) // Hello Dolly, Molly and Polly Note: mixing positional and named placeholders is not (yet) supported ## Computed values You can pass in a function as a dynamic value and it will be invoked (with no arguments) in order to compute the value on-the-fly. sprintf("Current timestamp: %d", Date.now) // Current timestamp: 1398005382890 sprintf("Current date and time: %s", function() { return new Date().toString() }) # AngularJS You can now use `sprintf` and `vsprintf` (also aliased as `fmt` and `vfmt` respectively) in your AngularJS projects. See `demo/`. # Installation ## Via Bower bower install sprintf ## Or as a node.js module npm install sprintf-js ### Usage var sprintf = require("sprintf-js").sprintf, vsprintf = require("sprintf-js").vsprintf sprintf("%2$s %3$s a %1$s", "cracker", "Polly", "wants") vsprintf("The first 4 letters of the english alphabet are: %s, %s, %s and %s", ["a", "b", "c", "d"]) # License **sprintf.js** is licensed under the terms of the 3-clause BSD license. ### esutils [](http://travis-ci.org/estools/esutils) esutils ([esutils](http://github.com/estools/esutils)) is utility box for ECMAScript language tools. ### API ### ast #### ast.isExpression(node) Returns true if `node` is an Expression as defined in ECMA262 edition 5.1 section [11](https://es5.github.io/#x11). #### ast.isStatement(node) Returns true if `node` is a Statement as defined in ECMA262 edition 5.1 section [12](https://es5.github.io/#x12). #### ast.isIterationStatement(node) Returns true if `node` is an IterationStatement as defined in ECMA262 edition 5.1 section [12.6](https://es5.github.io/#x12.6). #### ast.isSourceElement(node) Returns true if `node` is a SourceElement as defined in ECMA262 edition 5.1 section [14](https://es5.github.io/#x14). #### ast.trailingStatement(node) Returns `Statement?` if `node` has trailing `Statement`. ```js if (cond) consequent; ``` When taking this `IfStatement`, returns `consequent;` statement. #### ast.isProblematicIfStatement(node) Returns true if `node` is a problematic IfStatement. If `node` is a problematic `IfStatement`, `node` cannot be represented as an one on one JavaScript code. ```js { type: 'IfStatement', consequent: { type: 'WithStatement', body: { type: 'IfStatement', consequent: {type: 'EmptyStatement'} } }, alternate: {type: 'EmptyStatement'} } ``` The above node cannot be represented as a JavaScript code, since the top level `else` alternate belongs to an inner `IfStatement`. ### code #### code.isDecimalDigit(code) Return true if provided code is decimal digit. #### code.isHexDigit(code) Return true if provided code is hexadecimal digit. #### code.isOctalDigit(code) Return true if provided code is octal digit. #### code.isWhiteSpace(code) Return true if provided code is white space. White space characters are formally defined in ECMA262. #### code.isLineTerminator(code) Return true if provided code is line terminator. Line terminator characters are formally defined in ECMA262. #### code.isIdentifierStart(code) Return true if provided code can be the first character of ECMA262 Identifier. They are formally defined in ECMA262. #### code.isIdentifierPart(code) Return true if provided code can be the trailing character of ECMA262 Identifier. They are formally defined in ECMA262. ### keyword #### keyword.isKeywordES5(id, strict) Returns `true` if provided identifier string is a Keyword or Future Reserved Word in ECMA262 edition 5.1. They are formally defined in ECMA262 sections [7.6.1.1](http://es5.github.io/#x7.6.1.1) and [7.6.1.2](http://es5.github.io/#x7.6.1.2), respectively. If the `strict` flag is truthy, this function additionally checks whether `id` is a Keyword or Future Reserved Word under strict mode. #### keyword.isKeywordES6(id, strict) Returns `true` if provided identifier string is a Keyword or Future Reserved Word in ECMA262 edition 6. They are formally defined in ECMA262 sections [11.6.2.1](http://ecma-international.org/ecma-262/6.0/#sec-keywords) and [11.6.2.2](http://ecma-international.org/ecma-262/6.0/#sec-future-reserved-words), respectively. If the `strict` flag is truthy, this function additionally checks whether `id` is a Keyword or Future Reserved Word under strict mode. #### keyword.isReservedWordES5(id, strict) Returns `true` if provided identifier string is a Reserved Word in ECMA262 edition 5.1. They are formally defined in ECMA262 section [7.6.1](http://es5.github.io/#x7.6.1). If the `strict` flag is truthy, this function additionally checks whether `id` is a Reserved Word under strict mode. #### keyword.isReservedWordES6(id, strict) Returns `true` if provided identifier string is a Reserved Word in ECMA262 edition 6. They are formally defined in ECMA262 section [11.6.2](http://ecma-international.org/ecma-262/6.0/#sec-reserved-words). If the `strict` flag is truthy, this function additionally checks whether `id` is a Reserved Word under strict mode. #### keyword.isRestrictedWord(id) Returns `true` if provided identifier string is one of `eval` or `arguments`. They are restricted in strict mode code throughout ECMA262 edition 5.1 and in ECMA262 edition 6 section [12.1.1](http://ecma-international.org/ecma-262/6.0/#sec-identifiers-static-semantics-early-errors). #### keyword.isIdentifierNameES5(id) Return true if provided identifier string is an IdentifierName as specified in ECMA262 edition 5.1 section [7.6](https://es5.github.io/#x7.6). #### keyword.isIdentifierNameES6(id) Return true if provided identifier string is an IdentifierName as specified in ECMA262 edition 6 section [11.6](http://ecma-international.org/ecma-262/6.0/#sec-names-and-keywords). #### keyword.isIdentifierES5(id, strict) Return true if provided identifier string is an Identifier as specified in ECMA262 edition 5.1 section [7.6](https://es5.github.io/#x7.6). If the `strict` flag is truthy, this function additionally checks whether `id` is an Identifier under strict mode. #### keyword.isIdentifierES6(id, strict) Return true if provided identifier string is an Identifier as specified in ECMA262 edition 6 section [12.1](http://ecma-international.org/ecma-262/6.0/#sec-identifiers). If the `strict` flag is truthy, this function additionally checks whether `id` is an Identifier under strict mode. ### License Copyright (C) 2013 [Yusuke Suzuki](http://github.com/Constellation) (twitter: [@Constellation](http://twitter.com/Constellation)) and other contributors. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # [nearley](http://nearley.js.org) ↗️ [](http://js.org) [](https://badge.fury.io/js/nearley) nearley is a simple, fast and powerful parsing toolkit. It consists of: 1. [A powerful, modular DSL for describing languages](https://nearley.js.org/docs/grammar) 2. [An efficient, lightweight Earley parser](https://nearley.js.org/docs/parser) 3. [Loads of tools, editor plug-ins, and other goodies!](https://nearley.js.org/docs/tooling) nearley is a **streaming** parser with support for catching **errors** gracefully and providing _all_ parsings for **ambiguous** grammars. It is compatible with a variety of **lexers** (we recommend [moo](http://github.com/tjvr/moo)). It comes with tools for creating **tests**, **railroad diagrams** and **fuzzers** from your grammars, and has support for a variety of editors and platforms. It works in both node and the browser. Unlike most other parser generators, nearley can handle *any* grammar you can define in BNF (and more!). In particular, while most existing JS parsers such as PEGjs and Jison choke on certain grammars (e.g. [left recursive ones](http://en.wikipedia.org/wiki/Left_recursion)), nearley handles them easily and efficiently by using the [Earley parsing algorithm](https://en.wikipedia.org/wiki/Earley_parser). nearley is used by a wide variety of projects: - [artificial intelligence](https://github.com/ChalmersGU-AI-course/shrdlite-course-project) and - [computational linguistics](https://wiki.eecs.yorku.ca/course_archive/2014-15/W/6339/useful_handouts) classes at universities; - [file format parsers](https://github.com/raymond-h/node-dmi); - [data-driven markup languages](https://github.com/idyll-lang/idyll-compiler); - [compilers for real-world programming languages](https://github.com/sizigi/lp5562); - and nearley itself! The nearley compiler is bootstrapped. nearley is an npm [staff pick](https://www.npmjs.com/package/npm-collection-staff-picks). ## Documentation Please visit our website https://nearley.js.org to get started! You will find a tutorial, detailed reference documents, and links to several real-world examples to get inspired. ## Contributing Please read [this document](.github/CONTRIBUTING.md) *before* working on nearley. If you are interested in contributing but unsure where to start, take a look at the issues labeled "up for grabs" on the issue tracker, or message a maintainer (@kach or @tjvr on Github). nearley is MIT licensed. A big thanks to Nathan Dinsmore for teaching me how to Earley, Aria Stewart for helping structure nearley into a mature module, and Robin Windels for bootstrapping the grammar. Additionally, Jacob Edelman wrote an experimental JavaScript parser with nearley and contributed ideas for EBNF support. Joshua T. Corbin refactored the compiler to be much, much prettier. Bojidar Marinov implemented postprocessors-in-other-languages. Shachar Itzhaky fixed a subtle bug with nullables. ## Citing nearley If you are citing nearley in academic work, please use the following BibTeX entry. ```bibtex @misc{nearley, author = "Kartik Chandra and Tim Radvan", title = "{nearley}: a parsing toolkit for {JavaScript}", year = {2014}, doi = {10.5281/zenodo.3897993}, url = {https://github.com/kach/nearley} } ``` [](https://app.travis-ci.com/github/dankogai/js-base64) # base64.js Yet another [Base64] transcoder. [Base64]: http://en.wikipedia.org/wiki/Base64 ## Install ```shell $ npm install --save js-base64 ``` ## Usage ### In Browser Locally… ```html <script src="base64.js"></script> ``` … or Directly from CDN. In which case you don't even need to install. ```html <script src="https://cdn.jsdelivr.net/npm/js-base64@3.7.2/base64.min.js"></script> ``` This good old way loads `Base64` in the global context (`window`). Though `Base64.noConflict()` is made available, you should consider using ES6 Module to avoid tainting `window`. ### As an ES6 Module locally… ```javascript import { Base64 } from 'js-base64'; ``` ```javascript // or if you prefer no Base64 namespace import { encode, decode } from 'js-base64'; ``` or even remotely. ```html <script type="module"> // note jsdelivr.net does not automatically minify .mjs import { Base64 } from 'https://cdn.jsdelivr.net/npm/js-base64@3.7.2/base64.mjs'; </script> ``` ```html <script type="module"> // or if you prefer no Base64 namespace import { encode, decode } from 'https://cdn.jsdelivr.net/npm/js-base64@3.7.2/base64.mjs'; </script> ``` ### node.js (commonjs) ```javascript const {Base64} = require('js-base64'); ``` Unlike the case above, the global context is no longer modified. You can also use [esm] to `import` instead of `require`. [esm]: https://github.com/standard-things/esm ```javascript require=require('esm')(module); import {Base64} from 'js-base64'; ``` ## SYNOPSIS ```javascript let latin = 'dankogai'; let utf8 = '小飼弾' let u8s = new Uint8Array([100,97,110,107,111,103,97,105]); Base64.encode(latin); // ZGFua29nYWk= Base64.encode(latin, true)); // ZGFua29nYWk skips padding Base64.encodeURI(latin)); // ZGFua29nYWk Base64.btoa(latin); // ZGFua29nYWk= Base64.btoa(utf8); // raises exception Base64.fromUint8Array(u8s); // ZGFua29nYWk= Base64.fromUint8Array(u8s, true); // ZGFua29nYW which is URI safe Base64.encode(utf8); // 5bCP6aO85by+ Base64.encode(utf8, true) // 5bCP6aO85by- Base64.encodeURI(utf8); // 5bCP6aO85by- ``` ```javascript Base64.decode( 'ZGFua29nYWk=');// dankogai Base64.decode( 'ZGFua29nYWk'); // dankogai Base64.atob( 'ZGFua29nYWk=');// dankogai Base64.atob( '5bCP6aO85by+');// '小飼弾' which is nonsense Base64.toUint8Array('ZGFua29nYWk=');// u8s above Base64.decode( '5bCP6aO85by+');// 小飼弾 // note .decodeURI() is unnecessary since it accepts both flavors Base64.decode( '5bCP6aO85by-');// 小飼弾 ``` ```javascript Base64.isValid(0); // false: 0 is not string Base64.isValid(''); // true: a valid Base64-encoded empty byte Base64.isValid('ZA=='); // true: a valid Base64-encoded 'd' Base64.isValid('Z A='); // true: whitespaces are okay Base64.isValid('ZA'); // true: padding ='s can be omitted Base64.isValid('++'); // true: can be non URL-safe Base64.isValid('--'); // true: or URL-safe Base64.isValid('+-'); // false: can't mix both ``` ### Built-in Extensions By default `Base64` leaves built-in prototypes untouched. But you can extend them as below. ```javascript // you have to explicitly extend String.prototype Base64.extendString(); // once extended, you can do the following 'dankogai'.toBase64(); // ZGFua29nYWk= '小飼弾'.toBase64(); // 5bCP6aO85by+ '小飼弾'.toBase64(true); // 5bCP6aO85by- '小飼弾'.toBase64URI(); // 5bCP6aO85by- ab alias of .toBase64(true) '小飼弾'.toBase64URL(); // 5bCP6aO85by- an alias of .toBase64URI() 'ZGFua29nYWk='.fromBase64(); // dankogai '5bCP6aO85by+'.fromBase64(); // 小飼弾 '5bCP6aO85by-'.fromBase64(); // 小飼弾 '5bCP6aO85by-'.toUint8Array();// u8s above ``` ```javascript // you have to explicitly extend Uint8Array.prototype Base64.extendUint8Array(); // once extended, you can do the following u8s.toBase64(); // 'ZGFua29nYWk=' u8s.toBase64URI(); // 'ZGFua29nYWk' u8s.toBase64URL(); // 'ZGFua29nYWk' an alias of .toBase64URI() ``` ```javascript // extend all at once Base64.extendBuiltins() ``` ## `.decode()` vs `.atob` (and `.encode()` vs `btoa()`) Suppose you have: ``` var pngBase64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII="; ``` Which is a Base64-encoded 1x1 transparent PNG, **DO NOT USE** `Base64.decode(pngBase64)`.  Use `Base64.atob(pngBase64)` instead.  `Base64.decode()` decodes to UTF-8 string while `Base64.atob()` decodes to bytes, which is compatible to browser built-in `atob()` (Which is absent in node.js).  The same rule applies to the opposite direction. Or even better, `Base64.toUint8Array(pngBase64)`. ### If you really, really need an ES5 version You can transpiles to an ES5 that runs on IEs before 11. Do the following in your shell. ```shell $ make base64.es5.js ``` ## Brief History * Since version 3.3 it is written in TypeScript. Now `base64.mjs` is compiled from `base64.ts` then `base64.js` is generated from `base64.mjs`. * Since version 3.7 `base64.js` is ES5-compatible again (hence IE11-compabile). * Since 3.0 `js-base64` switch to ES2015 module so it is no longer compatible with legacy browsers like IE (see above) ### Estraverse [](http://travis-ci.org/estools/estraverse) Estraverse ([estraverse](http://github.com/estools/estraverse)) is [ECMAScript](http://www.ecma-international.org/publications/standards/Ecma-262.htm) traversal functions from [esmangle project](http://github.com/estools/esmangle). ### Documentation You can find usage docs at [wiki page](https://github.com/estools/estraverse/wiki/Usage). ### Example Usage The following code will output all variables declared at the root of a file. ```javascript estraverse.traverse(ast, { enter: function (node, parent) { if (node.type == 'FunctionExpression' || node.type == 'FunctionDeclaration') return estraverse.VisitorOption.Skip; }, leave: function (node, parent) { if (node.type == 'VariableDeclarator') console.log(node.id.name); } }); ``` We can use `this.skip`, `this.remove` and `this.break` functions instead of using Skip, Remove and Break. ```javascript estraverse.traverse(ast, { enter: function (node) { this.break(); } }); ``` And estraverse provides `estraverse.replace` function. When returning node from `enter`/`leave`, current node is replaced with it. ```javascript result = estraverse.replace(tree, { enter: function (node) { // Replace it with replaced. if (node.type === 'Literal') return replaced; } }); ``` By passing `visitor.keys` mapping, we can extend estraverse traversing functionality. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Extending the existing traversing rules. keys: { // TargetNodeName: [ 'keys', 'containing', 'the', 'other', '**node**' ] TestExpression: ['argument'] } }); ``` By passing `visitor.fallback` option, we can control the behavior when encountering unknown nodes. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Iterating the child **nodes** of unknown nodes. fallback: 'iteration' }); ``` When `visitor.fallback` is a function, we can determine which keys to visit on each node. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Skip the `argument` property of each node fallback: function(node) { return Object.keys(node).filter(function(key) { return key !== 'argument'; }); } }); ``` ### License Copyright (C) 2012-2016 [Yusuke Suzuki](http://github.com/Constellation) (twitter: [@Constellation](http://twitter.com/Constellation)) and other contributors. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # Web IDL Type Conversions on JavaScript Values This package implements, in JavaScript, the algorithms to convert a given JavaScript value according to a given [Web IDL](http://heycam.github.io/webidl/) [type](http://heycam.github.io/webidl/#idl-types). The goal is that you should be able to write code like ```js "use strict"; const conversions = require("webidl-conversions"); function doStuff(x, y) { x = conversions["boolean"](x); y = conversions["unsigned long"](y); // actual algorithm code here } ``` and your function `doStuff` will behave the same as a Web IDL operation declared as ```webidl void doStuff(boolean x, unsigned long y); ``` ## API This package's main module's default export is an object with a variety of methods, each corresponding to a different Web IDL type. Each method, when invoked on a JavaScript value, will give back the new JavaScript value that results after passing through the Web IDL conversion rules. (See below for more details on what that means.) Alternately, the method could throw an error, if the Web IDL algorithm is specified to do so: for example `conversions["float"](NaN)` [will throw a `TypeError`](http://heycam.github.io/webidl/#es-float). Each method also accepts a second, optional, parameter for miscellaneous options. For conversion methods that throw errors, a string option `{ context }` may be provided to provide more information in the error message. (For example, `conversions["float"](NaN, { context: "Argument 1 of Interface's operation" })` will throw an error with message `"Argument 1 of Interface's operation is not a finite floating-point value."`) Specific conversions may also accept other options, the details of which can be found below. ## Conversions implemented Conversions for all of the basic types from the Web IDL specification are implemented: - [`any`](https://heycam.github.io/webidl/#es-any) - [`void`](https://heycam.github.io/webidl/#es-void) - [`boolean`](https://heycam.github.io/webidl/#es-boolean) - [Integer types](https://heycam.github.io/webidl/#es-integer-types), which can additionally be provided the boolean options `{ clamp, enforceRange }` as a second parameter - [`float`](https://heycam.github.io/webidl/#es-float), [`unrestricted float`](https://heycam.github.io/webidl/#es-unrestricted-float) - [`double`](https://heycam.github.io/webidl/#es-double), [`unrestricted double`](https://heycam.github.io/webidl/#es-unrestricted-double) - [`DOMString`](https://heycam.github.io/webidl/#es-DOMString), which can additionally be provided the boolean option `{ treatNullAsEmptyString }` as a second parameter - [`ByteString`](https://heycam.github.io/webidl/#es-ByteString), [`USVString`](https://heycam.github.io/webidl/#es-USVString) - [`object`](https://heycam.github.io/webidl/#es-object) - [`Error`](https://heycam.github.io/webidl/#es-Error) - [Buffer source types](https://heycam.github.io/webidl/#es-buffer-source-types) Additionally, for convenience, the following derived type definitions are implemented: - [`ArrayBufferView`](https://heycam.github.io/webidl/#ArrayBufferView) - [`BufferSource`](https://heycam.github.io/webidl/#BufferSource) - [`DOMTimeStamp`](https://heycam.github.io/webidl/#DOMTimeStamp) - [`Function`](https://heycam.github.io/webidl/#Function) - [`VoidFunction`](https://heycam.github.io/webidl/#VoidFunction) (although it will not censor the return type) Derived types, such as nullable types, promise types, sequences, records, etc. are not handled by this library. You may wish to investigate the [webidl2js](https://github.com/jsdom/webidl2js) project. ### A note on the `long long` types The `long long` and `unsigned long long` Web IDL types can hold values that cannot be stored in JavaScript numbers, so the conversion is imperfect. For example, converting the JavaScript number `18446744073709552000` to a Web IDL `long long` is supposed to produce the Web IDL value `-18446744073709551232`. Since we are representing our Web IDL values in JavaScript, we can't represent `-18446744073709551232`, so we instead the best we could do is `-18446744073709552000` as the output. This library actually doesn't even get that far. Producing those results would require doing accurate modular arithmetic on 64-bit intermediate values, but JavaScript does not make this easy. We could pull in a big-integer library as a dependency, but in lieu of that, we for now have decided to just produce inaccurate results if you pass in numbers that are not strictly between `Number.MIN_SAFE_INTEGER` and `Number.MAX_SAFE_INTEGER`. ## Background What's actually going on here, conceptually, is pretty weird. Let's try to explain. Web IDL, as part of its madness-inducing design, has its own type system. When people write algorithms in web platform specs, they usually operate on Web IDL values, i.e. instances of Web IDL types. For example, if they were specifying the algorithm for our `doStuff` operation above, they would treat `x` as a Web IDL value of [Web IDL type `boolean`](http://heycam.github.io/webidl/#idl-boolean). Crucially, they would _not_ treat `x` as a JavaScript variable whose value is either the JavaScript `true` or `false`. They're instead working in a different type system altogether, with its own rules. Separately from its type system, Web IDL defines a ["binding"](http://heycam.github.io/webidl/#ecmascript-binding) of the type system into JavaScript. This contains rules like: when you pass a JavaScript value to the JavaScript method that manifests a given Web IDL operation, how does that get converted into a Web IDL value? For example, a JavaScript `true` passed in the position of a Web IDL `boolean` argument becomes a Web IDL `true`. But, a JavaScript `true` passed in the position of a [Web IDL `unsigned long`](http://heycam.github.io/webidl/#idl-unsigned-long) becomes a Web IDL `1`. And so on. Finally, we have the actual implementation code. This is usually C++, although these days [some smart people are using Rust](https://github.com/servo/servo). The implementation, of course, has its own type system. So when they implement the Web IDL algorithms, they don't actually use Web IDL values, since those aren't "real" outside of specs. Instead, implementations apply the Web IDL binding rules in such a way as to convert incoming JavaScript values into C++ values. For example, if code in the browser called `doStuff(true, true)`, then the implementation code would eventually receive a C++ `bool` containing `true` and a C++ `uint32_t` containing `1`. The upside of all this is that implementations can abstract all the conversion logic away, letting Web IDL handle it, and focus on implementing the relevant methods in C++ with values of the correct type already provided. That is payoff of Web IDL, in a nutshell. And getting to that payoff is the goal of _this_ project—but for JavaScript implementations, instead of C++ ones. That is, this library is designed to make it easier for JavaScript developers to write functions that behave like a given Web IDL operation. So conceptually, the conversion pipeline, which in its general form is JavaScript values ↦ Web IDL values ↦ implementation-language values, in this case becomes JavaScript values ↦ Web IDL values ↦ JavaScript values. And that intermediate step is where all the logic is performed: a JavaScript `true` becomes a Web IDL `1` in an unsigned long context, which then becomes a JavaScript `1`. ## Don't use this Seriously, why would you ever use this? You really shouldn't. Web IDL is … strange, and you shouldn't be emulating its semantics. If you're looking for a generic argument-processing library, you should find one with better rules than those from Web IDL. In general, your JavaScript should not be trying to become more like Web IDL; if anything, we should fix Web IDL to make it more like JavaScript. The _only_ people who should use this are those trying to create faithful implementations (or polyfills) of web platform interfaces defined in Web IDL. Its main consumer is the [jsdom](https://github.com/tmpvar/jsdom) project. # eslint-visitor-keys [](https://www.npmjs.com/package/eslint-visitor-keys) [](http://www.npmtrends.com/eslint-visitor-keys) [](https://travis-ci.org/eslint/eslint-visitor-keys) [](https://david-dm.org/eslint/eslint-visitor-keys) Constants and utilities about visitor keys to traverse AST. ## 💿 Installation Use [npm] to install. ```bash $ npm install eslint-visitor-keys ``` ### Requirements - [Node.js] 10.0.0 or later. ## 📖 Usage ```js const evk = require("eslint-visitor-keys") ``` ### evk.KEYS > type: `{ [type: string]: string[] | undefined }` Visitor keys. This keys are frozen. This is an object. Keys are the type of [ESTree] nodes. Their values are an array of property names which have child nodes. For example: ``` console.log(evk.KEYS.AssignmentExpression) // → ["left", "right"] ``` ### evk.getKeys(node) > type: `(node: object) => string[]` Get the visitor keys of a given AST node. This is similar to `Object.keys(node)` of ES Standard, but some keys are excluded: `parent`, `leadingComments`, `trailingComments`, and names which start with `_`. This will be used to traverse unknown nodes. For example: ``` const node = { type: "AssignmentExpression", left: { type: "Identifier", name: "foo" }, right: { type: "Literal", value: 0 } } console.log(evk.getKeys(node)) // → ["type", "left", "right"] ``` ### evk.unionWith(additionalKeys) > type: `(additionalKeys: object) => { [type: string]: string[] | undefined }` Make the union set with `evk.KEYS` and the given keys. - The order of keys is, `additionalKeys` is at first, then `evk.KEYS` is concatenated after that. - It removes duplicated keys as keeping the first one. For example: ``` console.log(evk.unionWith({ MethodDefinition: ["decorators"] })) // → { ..., MethodDefinition: ["decorators", "key", "value"], ... } ``` ## 📰 Change log See [GitHub releases](https://github.com/eslint/eslint-visitor-keys/releases). ## 🍻 Contributing Welcome. See [ESLint contribution guidelines](https://eslint.org/docs/developer-guide/contributing/). ### Development commands - `npm test` runs tests and measures code coverage. - `npm run lint` checks source codes with ESLint. - `npm run coverage` opens the code coverage report of the previous test with your default browser. - `npm run release` publishes this package to [npm] registory. [npm]: https://www.npmjs.com/ [Node.js]: https://nodejs.org/en/ [ESTree]: https://github.com/estree/estree Browser-friendly inheritance fully compatible with standard node.js [inherits](http://nodejs.org/api/util.html#util_util_inherits_constructor_superconstructor). This package exports standard `inherits` from node.js `util` module in node environment, but also provides alternative browser-friendly implementation through [browser field](https://gist.github.com/shtylman/4339901). Alternative implementation is a literal copy of standard one located in standalone module to avoid requiring of `util`. It also has a shim for old browsers with no `Object.create` support. While keeping you sure you are using standard `inherits` implementation in node.js environment, it allows bundlers such as [browserify](https://github.com/substack/node-browserify) to not include full `util` package to your client code if all you need is just `inherits` function. It worth, because browser shim for `util` package is large and `inherits` is often the single function you need from it. It's recommended to use this package instead of `require('util').inherits` for any code that has chances to be used not only in node.js but in browser too. ## usage ```js var inherits = require('inherits'); // then use exactly as the standard one ``` ## note on version ~1.0 Version ~1.0 had completely different motivation and is not compatible neither with 2.0 nor with standard node.js `inherits`. If you are using version ~1.0 and planning to switch to ~2.0, be careful: * new version uses `super_` instead of `super` for referencing superclass * new version overwrites current prototype while old one preserves any existing fields on it

jasperdg_near-balancer

Cargo.toml scripts build.sh test.sh src constants.rs lib.rs logger.rs math.rs pool.rs pool_factory.rs tests.rs tests dynamic_pool_tests.rs factory_tests.rs init_tests.rs math_tests.rs pool_initiation_test.rs pricing_tests.rs swap_tests.rs token.rs *

mattlockyer_near-collections

.eslintrc.js README.md contract Cargo.toml build.sh src lib.rs mini-colls Cargo.toml src lib.rs package.json scripts farm.js src App.js HelloMessage.js index.html index.js state app.js hello.js near.js utils state.js test contract.test.js test-utils.js utils config.js near-utils.js patch-config.js

# WIP This is an experimental repo. # (from boilerplate) React 17, Parcel with useContext and useReducer - Bundled with Parcel 2.0.1 - *Minimal all-in-one state management with async/await support* ## Getting Started: State Store & useContext >The following steps are already done, but describe how to use `src/utils/state` to create and use your own `store` and `StateProvider`. 1. Create a file e.g. `/state/app.js` and add the following code ```js import { State } from '../utils/state'; // example const initialState = { app: { mounted: false } }; export const { store, Provider } = State(initialState); ``` 2. Now in your `index.js` wrap your `App` component with the `StateProvider` ```js import { Provider } from './state/app'; ReactDOM.render( <Provider> <App /> </Provider>, document.getElementById('root') ); ``` 3. Finally in `App.js` you can `useContext(store)` ```js const { state, dispatch, update } = useContext(store); ``` ## Usage in Components ### Print out state values ```js <p>Hello {state.foo && state.foo.bar.hello}</p> ``` ### Update state directly in component functions ```js const handleClick = () => { update('clicked', !state.clicked); }; ``` ### Dispatch a state update function (action listener) ```js const onMount = () => { dispatch(onAppMount('world')); }; useEffect(onMount, []); ``` ## Dispatched Functions with context (update, getState, dispatch) When a function is called using dispatch, it expects arguments passed in to the outer function and the inner function returned to be async with the following json args: `{ update, getState, dispatch }` Example of a call: ```js dispatch(onAppMount('world')); ``` All dispatched methods **and** update calls are async and can be awaited. It also doesn't matter what file/module the functions are in, since the json args provide all the context needed for updates to state. For example: ```js import { helloWorld } from './hello'; export const onAppMount = (message) => async ({ update, getState, dispatch }) => { update('app', { mounted: true }); update('clicked', false); update('data', { mounted: true }); await update('', { data: { mounted: false } }); console.log('getState', getState()); update('foo.bar', { hello: true }); update('foo.bar', { hello: false, goodbye: true }); update('foo', { bar: { hello: true, goodbye: false } }); update('foo.bar.goodbye', true); await new Promise((resolve) => setTimeout(() => { console.log('getState', getState()); resolve(); }, 2000)); dispatch(helloWorld(message)); }; ``` ## Prefixing store and Provider The default names the `State` factory method returns are `store` and `Provider`. However, if you want multiple stores and provider contexts you can pass an additional `prefix` argument to disambiguate. ```js export const { appStore, AppProvider } = State(initialState, 'app'); ``` ## Performance and memo The updating of a single store, even several levels down, is quite quick. If you're worried about components re-rendering, use `memo`: ```js import React, { memo } from 'react'; const HelloMessage = memo(({ message }) => { console.log('rendered message'); return <p>Hello { message }</p>; }); export default HelloMessage; ``` Higher up the component hierarchy you might have: ```js const App = () => { const { state, dispatch, update } = useContext(appStore); ... const handleClick = () => { update('clicked', !state.clicked); }; return ( <div className="root"> <HelloMessage message={state.foo && state.foo.bar.hello} /> <p>clicked: {JSON.stringify(state.clicked)}</p> <button onClick={handleClick}>Click Me</button> </div> ); }; ``` When the button is clicked, the component HelloMessage will not re-render, it's value has been memoized (cached). Using this method you can easily prevent performance intensive state updates in further down components until they are neccessary. Reference: - https://reactjs.org/docs/context.html - https://dmitripavlutin.com/use-react-memo-wisely/

near-everything_documentation

README.md babel.config.js docs connecting _category_.json installation.md contributing _category_.json setting-up-the-project.md creating _category_.json create-media.md create-thing.md intro.md playground _category_.json connect.md create.md explore.md transact.md reading _category_.json data.md | docusaurus.config.js package-lock.json package.json sidebars.js src components HomepageFeatures index.js styles.module.css css custom.css pages index.js index.module.css markdown-page.md static img logo.svg

# Website This website is built using [Docusaurus 2](https://docusaurus.io/), a modern static website generator. ### Installation ``` $ yarn ``` ### Local Development ``` $ yarn start ``` This command starts a local development server and opens up a browser window. Most changes are reflected live without having to restart the server. ### Build ``` $ yarn build ``` This command generates static content into the `build` directory and can be served using any static contents hosting service. ### Deployment Using SSH: ``` $ USE_SSH=true yarn deploy ``` Not using SSH: ``` $ GIT_USER=<Your GitHub username> yarn deploy ``` If you are using GitHub pages for hosting, this command is a convenient way to build the website and push to the `gh-pages` branch.

Fudeveloper_crud-tutorial

README.md package-lock.json todos-crud-contract as-pect.config.js asconfig.json assembly __tests__ as-pect.d.ts index.spec.ts as_types.d.ts index.ts model.ts tsconfig.json index.js neardev dev-account.env package-lock.json package.json tests index.js todos-crud-web README.md package-lock.json package.json public index.html manifest.json robots.txt src App.css App.js App.test.js components CreateTodo.js Todo.js TodoList.js config.js index.css index.js logo.svg reportWebVitals.js setupTests.js

# Getting Started with Create React App This project was bootstrapped with [Create React App](https://github.com/facebook/create-react-app). ## Available Scripts In the project directory, you can run: ### `npm start` Runs the app in the development mode.\ Open [http://localhost:3000](http://localhost:3000) to view it in the browser. The page will reload if you make edits.\ You will also see any lint errors in the console. ### `npm test` Launches the test runner in the interactive watch mode.\ See the section about [running tests](https://facebook.github.io/create-react-app/docs/running-tests) for more information. ### `npm run build` Builds the app for production to the `build` folder.\ It correctly bundles React in production mode and optimizes the build for the best performance. The build is minified and the filenames include the hashes.\ Your app is ready to be deployed! See the section about [deployment](https://facebook.github.io/create-react-app/docs/deployment) for more information. ### `npm run eject` **Note: this is a one-way operation. Once you `eject`, you can’t go back!** If you aren’t satisfied with the build tool and configuration choices, you can `eject` at any time. This command will remove the single build dependency from your project. Instead, it will copy all the configuration files and the transitive dependencies (webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except `eject` will still work, but they will point to the copied scripts so you can tweak them. At this point you’re on your own. You don’t have to ever use `eject`. The curated feature set is suitable for small and middle deployments, and you shouldn’t feel obligated to use this feature. However we understand that this tool wouldn’t be useful if you couldn’t customize it when you are ready for it. ## Learn More You can learn more in the [Create React App documentation](https://facebook.github.io/create-react-app/docs/getting-started). To learn React, check out the [React documentation](https://reactjs.org/). ### Code Splitting This section has moved here: [https://facebook.github.io/create-react-app/docs/code-splitting](https://facebook.github.io/create-react-app/docs/code-splitting) ### Analyzing the Bundle Size This section has moved here: [https://facebook.github.io/create-react-app/docs/analyzing-the-bundle-size](https://facebook.github.io/create-react-app/docs/analyzing-the-bundle-size) ### Making a Progressive Web App This section has moved here: [https://facebook.github.io/create-react-app/docs/making-a-progressive-web-app](https://facebook.github.io/create-react-app/docs/making-a-progressive-web-app) ### Advanced Configuration This section has moved here: [https://facebook.github.io/create-react-app/docs/advanced-configuration](https://facebook.github.io/create-react-app/docs/advanced-configuration) ### Deployment This section has moved here: [https://facebook.github.io/create-react-app/docs/deployment](https://facebook.github.io/create-react-app/docs/deployment) ### `npm run build` fails to minify This section has moved here: [https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify](https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify) # CRUD App Tutorial This contains the finished code for the tutorial on [building a CRUD dApp](https://docs.near.org/docs/tutorials/apps/todos-crud-app) # Notes The application will consist of two distinct layers: - Smart contract (in web2 we may refer to this as server-side or back-end) - Web app (in web2 we may refer to this as client-side or front-end) ## Working **Contracts: `/todos-crud-contract/`** 1. install dependencies `cd todos-crud-contract && yarn` 2. run tests - `yarn test` 3. compile the contract - `yarn build` 4. deploy the contract - `yarn deploy` **App Tests: `/todos-crud-web/`** 1. install dependencies `cd todos-crud-web && yarn` 2. start the server - `yarn start` ## Notes - If you deploy the contract, make sure to edit the `CONTRACT_NAME` found in `todos-crud-web/src/config.js` to match your deployed contract. - You must be logged in to interact with the app. If you don't have a NEAR wallet, click [here](https://wallet.testnet.near.org/) to make one.

frol_react-near-lockup

next-env.d.ts next.config.js package-lock.json package.json tsconfig.json

isabella232_near-storage-dapp-demo

.eslintrc.yml .github workflows deploy.yml README.md as-pect.config.js asconfig.json assembly __tests__ as-pect.d.ts tokenAssets.spec.ts as_types.d.ts main.ts model.ts tsconfig.json babel.config.js neardev shared-test-staging test.near.json shared-test test.near.json package.json src config.js index.html tests integration App-integration.test.js tsconfig.json

# NEAR dApp + Filecoin Storage Demo This project is an example of how to integrate Textile's Filecoin Storage into any NEAR dApp using the Filecoin Storage library for NEAR, `@textile/near-storage`. The library interacts with the `near-api-js` code you've already written to provide an easy to use API for storing any amount of data off of the NEAR blockchain, and in the Filecoin network. This example allows users to authenticate with their NEAR account, create unique visualizations of [cellular automata](https://mathworld.wolfram.com/ElementaryCellularAutomaton.html), store those visualizations on the Filecoin network, and mint verifiable records of the stored visualizations within a NEAR smart contract. This app was built starting from one of the many [NEAR example apps](https://github.com/near-examples), so be sure you're familiar with those examples and the [NEAR docs](https://docs.near.org/docs/concepts/new-to-near) so you know the basics of NEAR smart contracts and `near-api-js` usage. # Table of Contents - [Quick start](#quick-start) - [How it Works](#how-it-works) - [Learn More](#learn-more) - [Exploring the Code](#exploring-the-code) - [Deploy](#deploy) # Quick Start To run this project locally: 1. Prerequisites: Make sure you have Node.js ≥ 12 installed (https://nodejs.org). 2. Install dependencies: `npm install` (or just `npm i`) 3. Run the local development server: `npm run dev` (see `package.json` for a full list of `scripts` you can run with `npm`) Now you'll have a local development environment backed by the NEAR TestNet and Filecoin Storage! Running `npm run dev` will tell you the URL you can visit in your browser to see the app. # How it Works There are two main components in this example NEAR dApp using Filecoin Storage: 1. The example NEAR dApp and associated smart contract. This would be replaced by your own app and smart contract. 2. The `@textile/near-storage` library which abstracts use of the Filecoin Storage NEAR smart contract and Filecoin Storage Provider into an easy-to-use API. ## Example dApp and Smart Contract We start with code you'll typically see in any NEAR dApp... In `src/index.tsx`, we read our configuration, initialize the `Near` client, create a `WalletConnection`, get a reference to the current NEAR user, and create a reference to our example app's smart contract: ``` import getConfig from './config.js'; import { connect, keyStores, Contract, WalletConnection } from 'near-api-js'; // Read the configuration const nearConfig = getConfig(ENV.NODE_ENV as any || 'testnet'); // Initializing connection to the NEAR TestNet const near = await connect({ deps: { keyStore: new keyStores.BrowserLocalStorageKeyStore() }, ...nearConfig }); // Needed to access wallet const walletConnection = new WalletConnection(near, null); // Load in account data let currentUser; if (walletConnection.getAccountId()) { currentUser = { accountId: walletConnection.getAccountId(), balance: (await walletConnection.account().state()).amount }; } // Initializing our contract APIs by contract name and configuration const contract = await new Contract(walletConnection.account(), nearConfig.contractName, { viewMethods: ['getStoredAssets'], changeMethods: ['storeNewAsset'], sender: walletConnection.getAccountId() }); ``` Our app's smart contract (the source is in the `assembly` directory) exposes two functions; `storeNewAsset` which we'll use to store on chain records of the cellular automata visualizations stored on Filecoin and `getStoredAssets` which will be used to retrieve the list of all records previously stored using `storeNewAsset`. ## Using Filecoin Storage ### Initializing the API After creating a NEAR `WalletConnection` in the `src/index.tsx` code above, we pass that object into the `init` function provided by `@textile/near-storage`. This provides the API we'll use from then on to interact with Filecoin Storage. ``` import { init } from "@textile/near-storage" const storage = await init(walletConnection) ``` We bind our newly created NEAR and Filecoin Storage objects to the `App` React component, and the web app is then rendered in `App.tsx`. ### User Sign In Before using Filecoin Storage to store data, the web app user must be signed in to their NEAR account. If they aren't already signed in, Filecoin Storage provides a helper method to initiate the sign in. Here, we use it inside a function that is bound to a clickable UI element: ``` const signIn = () => { storage.requestSignIn('RULE TOKENS') }; ``` ### Adding a Deposit Before a user can store data using Filecoin Storage, a deposit of 1 NEAR must be made, either by the user or by you (the dApp developer) on the user's behalf, into the Filecoin Storage NEAR smart contract. The deposited funds help provide the Filecoin Storage Provider some amount of Sybil attack resistance. After depositing funds, the user has an active storage session. The session will expire after an hour, and the deposited funds will be returned to the sender. ``` const addDeposit = async () => { await storage.addDeposit() } ``` ### Storing Data Once a deposit is made and the user has an active storage session, we can now store data. It's as simple as passing a `File` object into the Filecoin Storage `store` function. Our `mint` funtion in `App.tsx` builds a `File` from a blob of data, our cellular automaton visualization, stores the file using the `store` function, and then saves the resulting information about the stored data in our dApp's smart contract using its `storeNewAsset` function: ``` const mint = async () => { if (artwork == undefined) { alert("error: no token selected"); return; } const data = await fetch(artwork) const blob = await data.blob() const file = new File([blob], "rule.png", { type: "image/png", lastModified: new Date().getTime(), }); const stored = await storage.store(file) const rule = "" + parseInt([...positionals].reverse().join(""), 2) contract.storeNewAsset( { id: stored.id, cid: stored.cid["/"], rule }, BOATLOAD_OF_GAS, Big('0').toFixed() ).then(() => { contract.getStoredAssets().then((tokens: any) => { setTokens(tokens); }); }); return } ``` We've now stored data using Filecoin Storage and kept a record of that data storage on the NEAR blockchain. ### Checking Filecoin Storage Status You stored data is available on the IPFS network (note that during the Testnet release, data will pinned for a limited time only), but stored data takes time to make it through the Filecoin Storage Provider, become sealed with a Filecoin miner, and verified on the Filecoin blockchain. You can check the data's status at any time by calling the Filecoin Storage `status` method. In `App.tsx` we do that when the page loads by getting a list of stored data IDs from our dApp's smart contract and passing those IDs to the `status` method. It's a bit of Javascript async `Promise` wrangling, but all comes down to calling: ``` useEffect(() => { ... return await storage.status(asset.id) ... }, []); ``` # Learn More Our example dApp provides a thorough example of integrating Filecoin Storage into a NEAR dApp. We've covered all the highlights of the integration in this README, but be sure to check out the [full Filecoin Storage documentation](https://near.storage/docs/) for more. # Exploring the Code 1. The backend code lives in the `/assembly` folder. This code gets deployed to the NEAR blockchain when you run `npm run deploy:contract`. This sort of code-that-runs-on-a-blockchain is called a "smart contract" – [learn more about NEAR smart contracts][smart contract docs]. 2. The frontend code lives in the `/src` folder. [/src/index.html](/src/index.html) is a great place to start exploring. Note that it loads in `/src/index.js`, where you can learn how the frontend connects to the NEAR blockchain. 3. Tests: there are different kinds of tests for the frontend and backend. The backend code gets tested with the [asp] command for running the backend AssemblyScript tests, and [jest] for running frontend tests. You can run both of these at once with `npm test`. Both contract and client-side code will auto-reload as you change source files. # Deploy Every smart contract in NEAR has its [own associated account][near accounts]. Ours is deployed to `{TODO}.testnet`. One command: npm run deploy As you can see in `package.json`, this does two things: 1. builds & deploys smart contracts to NEAR TestNet 2. builds & deploys frontend code to GitHub using [gh-pages]. For now, you can view the "app" at: https://textileio.github.io/near-storage-dapp-demo/ [near]: https://nearprotocol.com/ [assemblyscript]: https://docs.assemblyscript.org/ [react]: https://reactjs.org [smart contract docs]: https://docs.nearprotocol.com/docs/roles/developer/contracts/assemblyscript [asp]: https://www.npmjs.com/package/@as-pect/cli [jest]: https://jestjs.io/ [near accounts]: https://docs.nearprotocol.com/docs/concepts/account [near wallet]: https://wallet.nearprotocol.com [near-cli]: https://github.com/nearprotocol/near-cli [cli]: https://www.w3schools.com/whatis/whatis_cli.asp [create-near-app]: https://github.com/nearprotocol/create-near-app [gh-pages]: https://github.com/tschaub/gh-pages

near_borsh-js

.build_scripts prepare-package-json.js .eslintrc.yml .github ISSUE_TEMPLATE BOUNTY.yml workflows borsh.yml .travis.yml LICENSE-MIT.txt README.md borsh-ts .eslintrc.yml buffer.ts deserialize.ts index.ts serialize.ts test (de)serialize.test.js .eslintrc.yml structures.js utils.test.js types.ts utils.ts examples cjs index.js package.json tsconfig.json esm index.js package.json tsconfig.json lib cjs buffer.d.ts buffer.js deserialize.d.ts deserialize.js index.d.ts index.js serialize.d.ts serialize.js types.d.ts types.js utils.d.ts utils.js esm buffer.d.ts buffer.js deserialize.d.ts deserialize.js index.d.ts index.js package.json serialize.d.ts serialize.js types.d.ts types.js utils.d.ts utils.js types buffer.d.ts deserialize.d.ts index.d.ts serialize.d.ts types.d.ts utils.d.ts package.json tsconfig.cjs.json tsconfig.esm.json tsconfig.json tsconfig.types.json

# Borsh JS [](https://opensource.org/licenses/Apache-2.0) [](https://opensource.org/licenses/MIT) [](https://discord.gg/Vyp7ETM) [](https://travis-ci.com/near/borsh-js) [](https://npmjs.com/borsh) [](https://npmjs.com/borsh) **Borsh JS** is an implementation of the [Borsh] binary serialization format for JavaScript and TypeScript projects. Borsh stands for _Binary Object Representation Serializer for Hashing_. It is meant to be used in security-critical projects as it prioritizes consistency, safety, speed, and comes with a strict specification. > [!TIP] > We strongly recommend to use `borsh-js` alongside the amazing project [Borsher](https://github.com/nameskyteam/borsher), which we plan to merge in borsh. ## Examples ### (De)serializing a Value ```javascript import * as borsh from 'borsh'; const encodedU16 = borsh.serialize('u16', 2); const decodedU16 = borsh.deserialize('u16', encodedU16); const encodedStr = borsh.serialize('string', 'testing'); const decodedStr = borsh.deserialize('string', encodedStr); ``` ### (De)serializing an Object ```javascript import * as borsh from 'borsh'; const value = {x: 255, y: BigInt(20), z: '123', arr: [1, 2, 3]}; const schema = { struct: { x: 'u8', y: 'u64', 'z': 'string', 'arr': { array: { type: 'u8' }}}}; const encoded = borsh.serialize(schema, value); const decoded = borsh.deserialize(schema, encoded); ``` ## API The package exposes the following functions: - `serialize(schema: Schema, obj: any, validate: boolean = true): Uint8Array` - serializes an object `obj` according to the schema `schema`. Setting `validate` to false will skip the validation of the `schema`. - `deserialize(schema: Schema, buffer: Uint8Array, validate: boolean = true): any` - deserializes an object according to the schema `schema` from the buffer `buffer`. Setting `validate` to false will skip the validation of the `schema`. ## Schemas Schemas are used to describe the structure of the data being serialized or deserialized. They are used to validate the data and to determine the order of the fields in the serialized data. > You can find examples of valid in the [test](./borsh-ts/test/utils.test.js) folder. > [!TIP] > We strongly recommend to use `borsh-js` alongside the amazing project [Borsher](https://github.com/nameskyteam/borsher), which we plan to merge in borsh. ### Basic Types Basic types are described by a string. The following types are supported: - `u8`, `u16`, `u32`, `u64`, `u128` - unsigned integers of 8, 16, 32, 64, and 128 bits respectively. - `i8`, `i16`, `i32`, `i64`, `i128` - signed integers of 8, 16, 32, 64, and 128 bits respectively. - `f32`, `f64` - IEEE 754 floating point numbers of 32 and 64 bits respectively. - `bool` - boolean value. - `string` - UTF-8 string. ### Arrays, Options, Maps, Sets, Enums, and Structs More complex objects are described by a JSON object. The following types are supported: - `{ array: { type: Schema, len?: number } }` - an array of objects of the same type. The type of the array elements is described by the `type` field. If the field `len` is present, the array is fixed-size and the length of the array is `len`. Otherwise, the array is dynamic-sized and the length of the array is serialized before the elements. - `{ option: Schema }` - an optional object. The type of the object is described by the `type` field. - `{ map: { key: Schema, value: Schema }}` - a map. The type of the keys and values are described by the `key` and `value` fields respectively. - `{ set: Schema }` - a set. The type of the elements is described by the `type` field. - `{ enum: [ { struct: { className1: structSchema1 } }, { struct: { className2: structSchema2 } }, ... ] }` - an enum. The variants of the enum are described by the `className1`, `className2`, etc. fields. The variants are structs. - `{ struct: { field1: Schema1, field2: Schema2, ... } }` - a struct. The fields of the struct are described by the `field1`, `field2`, etc. fields. ### Type Mappings | Javascript | Borsh | |------------------|-----------------------------------| | `number` | `u8` `u16` `u32` `i8` `i16` `i32` | | `bigint` | `u64` `u128` `i64` `i128` | | `number` | `f32` `f64` | | `number` | `f32` `f64` | | `boolean` | `bool` | | `string` | UTF-8 string | | `type[]` | fixed-size byte array | | `type[]` | dynamic sized array | | `object` | enum | | `Map` | HashMap | | `Set` | HashSet | | `null` or `type` | Option | --- ## Contributing Install dependencies: ```bash yarn install ``` Continuously build with: ```bash yarn dev ``` Run tests: ```bash yarn test ``` Run linter ```bash yarn lint ``` ## Publish Prepare `dist` version by running: ```bash yarn build ``` When publishing to npm use [np](https://github.com/sindresorhus/np). # License This repository is distributed under the terms of both the MIT license and the Apache License (Version 2.0). See [LICENSE-MIT](LICENSE-MIT.txt) and [LICENSE-APACHE](LICENSE-APACHE) for details. [Borsh]: https://borsh.io

nearwatch_nearwasmbot

.env README.md bot.js methods.json package.json

## Introduction Telegram bot <a href="https://t.me/nearwasmbot">@nearwasmbot</a> helps extract methods list of NEAR account contract , get method result in one click and quickly share it in Telegram <img src="https://telegra.ph/file/167e062dcda87d4a3414a.png" /> ### Installation ``` $ npm install ``` ### Launching ``` $ node bot.js ``` ### Usage Send the NEAR account address to the bot and get a list of contract methods. Reply contract methods post and type ``` view contract_method contract_parameters ``` to get a result of a view method ### Video https://youtu.be/N9ES3dMfy3g ### Support <a href="https://t.me/nearwatch">Near.Watch technical support group (telegram)</a>

kmcodesdev_NFT-Contract-on-NEAR

.github dependabot.yml workflows tests.yml .gitpod.yml Cargo.toml README-Windows.md README.md build.bat build.sh flags.sh nft Cargo.toml src lib.rs res README.md test-approval-receiver Cargo.toml src lib.rs test-token-receiver Cargo.toml src lib.rs tests sim main.rs test_approval.rs test_core.rs test_enumeration.rs utils.rs

Non-fungible Token (NFT) ===================  Build Rust project with Cargo and run a test. Logged in my testnet Near account through a terminal command so that i could set an account variable for my accound ID. Compiled the contract and Minted a Near NFT in the "Standard way" followed by a transfer transaction to a new sub wallet. # Folder that contains wasm files

Learn-NEAR_multiple-cross-contract-calls

.github workflows tests.yml .gitpod.yml README.md contract Cargo.toml README.md build.sh deploy.sh src batch_actions.rs lib.rs multiple_contracts.rs similar_contracts.rs integration-tests package-lock.json package.json src main.ava.ts package.json

# Complex Cross-Contract Calls This contract presents 3 examples on how to do complex cross-contract calls. Particularly, it shows: 1. How to batch method calls to a same contract. 2. How to call multiple contracts in parallel, each returning a different type. 3. Different ways of handling the responses in the callback. <br /> # Quickstart Clone this repository locally or [**open it in gitpod**](https://gitpod.io/#/github.com/near-examples/multiple-cross-contract-calls). Then follow these steps: ### 1. Install Dependencies ```bash npm install ``` ### 2. Test the Contract Deploy your contract in a sandbox and simulate interactions from users. ```bash npm test ``` --- # Learn More 1. Learn more about the contract through its [README](./contract/README.md). 2. Check [**our documentation**](https://docs.near.org/develop/welcome). # Complex Cross-Contract Calls Examples This contract presents 3 examples on how to do complex cross-contract calls. Particularly, it shows: 1. How to batch method calls to a same contract. 2. How to call multiple contracts in parallel, each returning a different type. 3. Different ways of handling the responses in the callback. <br /> ## 1. Batch Actions You can aggregate multiple actions directed towards one same contract into a batched transaction. Methods called this way are executed sequentially, with the added benefit that, if one fails then they **all get reverted**. ```rust // Promise with batch actions Promise::new(self.hello_account.clone()) .function_call( ... ) .function_call( ... ) .function_call( ... ) .function_call( ... ) .then( Self::ext(env::current_account_id()).batch_actions_callback() ) ``` In this case, the callback has access to the value returned by the **last action** from the chain. <br /> ## 2. Calling Multiple Contracts A contract can call multiple other contracts. This creates multiple transactions that execute all in parallel. If one of them fails the rest **ARE NOT REVERTED**. ```rust let hello_promise = Promise::new(self.hello_account).function_call( ... ); let counter_promise = Promise::new(self.counter_account).function_call( ... ); let guestbook_promise = Promise::new(self.guestbook_account).function_call( ... ); // Calling multiple contracts in parallel hello_promise .and(counter_promise) .and(guestbook_promise) .then( Self::ext(env::current_account_id()).multiple_contracts_callback(), ) ``` In this case, the callback has access to an **array of responses**, which have either the value returned by each call, or an error message. <br /> ## 3. Calling Contracts With the Same Return Type This example is a particular case of the previous one ([2. Calling Multiple Contracts](#2-calling-multiple-contracts)). It simply showcases a different way to check the results by directly accessing the `promise_result` array. ```rust for index in 0..3 { let result = env::promise_result(index); // response of the i-th call match result { PromiseResult::Successful(value) => { if let Ok(message) = near_sdk::serde_json::from_slice::<String>(&value) { results.push(message.clone()); log!(format!("Call {index} returned: {message}")); } else { log!(format!("Error deserializing call {index} result.")); } } ... } } ``` # Complex Cross-Contract Calls This contract presents 3 examples on how to do complex cross-contract calls. Particularly, it shows: 1. How to batch method calls to a same contract. 2. How to call multiple contracts in parallel, each returning a different type. 3. Different ways of handling the responses in the callback. <br /> # Quickstart Clone this repository locally or [**open it in gitpod**](https://gitpod.io/#/github.com/near-examples/multiple-cross-contract-calls). Then follow these steps: ### 1. Install Dependencies ```bash npm install ``` ### 2. Test the Contract Deploy your contract in a sandbox and simulate interactions from users. ```bash npm test ``` --- # Learn More 1. Learn more about the contract through its [README](./contract/README.md). 2. Check [**our documentation**](https://docs.near.org/develop/welcome). # Complex Cross-Contract Calls Examples This contract presents 3 examples on how to do complex cross-contract calls. Particularly, it shows: 1. How to batch method calls to a same contract. 2. How to call multiple contracts in parallel, each returning a different type. 3. Different ways of handling the responses in the callback. <br /> ## 1. Batch Actions You can aggregate multiple actions directed towards one same contract into a batched transaction. Methods called this way are executed sequentially, with the added benefit that, if one fails then they **all get reverted**. ```typescript // Promise with batch actions NearPromise.new(this.helloAccount) .functionCall( ... ) .functionCall( ... ) .functionCall( ... ) .functionCall( ... ) .then( NearPromise.new(near.currentAccountId()).functionCall( "batch_actions_callback", NO_ARGS, NO_DEPOSIT, XCC_GAS ) ); ``` In this case, the callback has access to the value returned by the **last action** from the chain. <br /> ## 2. Calling Multiple Contracts A contract can call multiple other contracts. This creates multiple transactions that execute all in parallel. If one of them fails the rest **ARE NOT REVERTED**. ```typescript const helloPromise = NearPromise.new(this.helloAccount).functionCall( ... ); const counterPromise = NearPromise.new(this.counterAccount).functionCall( ... ); const guestbookPromise = NearPromise.new(this.guestbookAccount).functionCall( ... ); // Calling multiple contracts in parallel return helloPromise .and(counterPromise) .and(guestbookPromise) .then( NearPromise.new(near.currentAccountId()).functionCall( "multiple_contracts_callback", NO_ARGS, NO_DEPOSIT, XCC_GAS ) ); ``` In this case, the callback has access to an **array of responses**, which have either the value returned by each call, or an error message. <br /> ## 3. Calling Contracts With the Same Return Type This example is a particular case of the previous one ([2. Calling Multiple Contracts](#2-calling-multiple-contracts)). It simply showcases a different way to check the results by directly accessing the `promise_result` array. ```typescript return [0, 1, 2] .map((index) => { try { // near.promiseResult(i) has the result of the i-th call const result = near.promiseResult(index); let message: string; try { message = deserialize(result) as string; } catch { near.log(`Error deserializing call ${index} result.`); return ""; } near.log(`Call ${index} returned: ${message}`); return message; } catch { near.log(`Promise number ${index} failed.`); return ""; } }) .filter((message) => message.length > 0); ```

NEARBuilders_DAO-Components

README.md

# DAO-Components DAO BOS Components

Peersyst_sequelize-typescript-auto-migrations

.vscode launch.json README.md bin cmds create.ts run.ts sequelize-ts.ts example config config.json models account.ts city.ts country.ts geo.ts index.ts purchaseProducts.ts package.json index.ts lib compiler.ts import.ts migrate.ts options.ts types.ts package.json tsconfig.json

# sequelize-auto-migrations Migration generator &amp;&amp; runner for sequelize This package provide two tools: * `sequelize-ts create` - tool for create new migrations * `sequelize-ts run` - tool for apply created by first tool migrations ## Install `todo` ## Usage * Init sequelize, with sequelize-cli, using `sequelize init` * Create your models * Create initial migration - run: `sequelize-ts create --name <migration name>` * Change models and run it again, model difference will be saved to the next migration To preview new migration, without any changes, you can run: `sequelize-ts create --preview` `sequelize-ts create` tool creates `_current.json` file in `migrations` dir, that is used to calculate difference to the next migration. Do not remove it! To create and then execute migration, use: `sequelize-ts create --name <name> -x` ## Executing migrations * There is simple command to perform all created migrations (from selected revision): `sequelize-ts run` * To select a revision, use `--rev <x>` * If migration fails, you can continue, use `--pos <x>` * To prevent execution next migrations, use `--one` For more information, use `sequelize-ts create --help`, `runmigration --help` ## TODO: * Migration action sorting procedure need some fixes. When many foreign keys in tables, there is a bug with action order. Now, please check it manually (`--preview` option) * Need to check (and maybe fix) field types: `BLOB`, `RANGE`, `ARRAY`, `GEOMETRY`, `GEOGRAPHY` * Downgrade is not supported, add it * This module tested with postgresql (I use it with my projects). Test with mysql and sqlite.

Meta-Pool_liquid-staking-contract

.vscode launch.json settings.json tasks.json CHANGELOG.md Cargo.toml LICENSE.md README.md build.sh docs _config.yml beta-test.md index.md technical-notes.md tokenomics.md To STAKE is to mint stNEARs To UNSTAKE is to burn stNEAR metapool Cargo.toml src account.rs distribute.rs empty_nep_145.rs events.rs fungible_token_standard.rs gas.rs internal.rs lib.rs migrations.rs owner.rs reward_meter.rs staking_pools.rs types.rs utils.rs tests sim main.rs sim_contract_state.rs sim_setup.rs sim_steps.rs sim_utils.rs simulation_desk_check.rs simulation_fuzzy.rs simulation_simple.rs test_utils.rs tests.md scripts call-testnet.sh deploy-dev.sh deploy-guildnet.sh deploy-mainnet.sh deploy-restore.sh deploy-testnet.sh propose-upgrade.sh test-core-staking-pool Cargo.toml README.md src internal.rs lib.rs test_utils.rs test-get-epoch-contract Cargo.toml gec-deploy-testnet.sh src lib.rs owner.rs TEST ONLY CONTRACT test.sh

# COPIED HERE FOR SIMULATION-TESTING --- internal_ping commented so withdaw works in simulation # Staking / Delegation contract This contract provides a way for other users to delegate funds to a single validation node. Implements the https://github.com/nearprotocol/NEPs/pull/27 standard. There are three different roles: - The staking pool contract account `my_validator`. A key-less account with the contract that pools funds. - The owner of the staking contract `owner`. Owner runs the validator node on behalf of the staking pool account. - Delegator accounts `user1`, `user2`, etc. Accounts that want to stake their funds with the pool. The owner can setup such contract and validate on behalf of this contract in their node. Any other user can send their tokens to the contract, which will be pooled together and increase the total stake. These users accrue rewards (subtracted fees set by the owner). Then they can unstake and withdraw their balance after some unlocking period. ## Staking pool implementation details For secure operation of the staking pool, the contract should not have any access keys. Otherwise the contract account may issue a transaction that can violate the contract guarantees. After users deposit tokens to the contract, they can stake some or all of them to receive "stake" shares. The price of a "stake" share can be defined as the total amount of staked tokens divided by the the total amount of "stake" shares. The number of "stake" shares is always less than the number of the staked tokens, so the price of single "stake" share is not less than `1`. ### Initialization A contract has to be initialized with the following parameters: - `owner_id` - `string` the account ID of the contract owner. This account will be able to call owner-only methods. E.g. `owner` - `stake_public_key` - `string` the initial public key that will be used for staking on behalf of the contract's account in base58 ED25519 curve. E.g. `KuTCtARNzxZQ3YvXDeLjx83FDqxv2SdQTSbiq876zR7` - `reward_fee_fraction` - `json serialized object` the initial value of the fraction of the reward that the owner charges delegators for running the node. The fraction is defined by the numerator and denumerator with `u32` types. E.g. `{numerator: 10, denominator: 100}` defines `10%` reward fee. The fraction can be at most `1`. The denumerator can't be `0`. During the initialization the contract checks validity of the input and initializes the contract. The contract shouldn't have locked balance during the initialization. At the initialization the contract allocates one trillion yocto NEAR tokens towards "stake" share price guarantees. This fund is later used to adjust the the amount of staked and unstaked tokens due to rounding error. For each stake and unstake action, the contract may spend at most 1 yocto NEAR from this fund (implicitly). The current total balance (except for the "stake" share price guarantee amount) is converted to shares and will be staked (after the next action). This balance can never be unstaked or withdrawn from the contract. It's used to maintain the minimum number of shares, as well as help pay for the potentially growing contract storage. ### Delegator accounts The contract maintains account information per delegator associated with the hash of the delegator's account ID. The information contains: - Unstaked balance of the account. - Number of "stake" shares. - The minimum epoch height when the unstaked balance can be withdrawn. Initially zero. A delegator can do the following actions: #### Deposit When a delegator account first deposits funds to the contract, the internal account is created and credited with the attached amount of unstaked tokens. #### Stake When an account wants to stake a given amount, the contract calculates the number of "stake" shares (`num_shares`) and the actual rounded stake amount (`amount`). The unstaked balance of the account is decreased by `amount`, the number of "stake" shares of the account is increased by `num_shares`. The contract increases the total number of staked tokens and the total number of "stake" shares. Then the contract restakes. #### Unstake When an account wants to unstake a given amount, the contract calculates the number of "stake" shares needed (`num_shares`) and the actual required rounded unstake amount (`amount`). It's calculated based on the current total price of "stake" shares. The unstaked balance of the account is increased by `amount`, the number of "stake" shares of the account is decreased by `num_shares`. The minimum epoch height when the account can withdraw is set to the current epoch height increased by `4`. The contract decreases the total number of staked tokens and the total number of "stake" shares. Then the contract restakes. #### Withdraw When an account wants to withdraw, the contract checks the minimum epoch height of this account and checks the amount. Then sends the transfer and decreases the unstaked balance of the account. #### Ping Calls the internal function to distribute rewards if the blockchain epoch switched. The contract will restake in this case. ### Reward distribution Before every action the contract calls method `internal_ping`. This method distributes rewards towards active delegators when the blockchain epoch switches. The rewards might be given due to staking and also because the contract earns gas fee rebates for every function call. Note, the if someone accidentally (or intentionally) transfers tokens to the contract (without function call), then tokens from the transfer will be distributed to the active stake participants of the contract in the next epoch. Note, in a rare scenario, where the owner withdraws tokens and while the call is being processed deletes their account, the withdraw transfer will fail and the tokens will be returned to the staking pool. These tokens will also be distributed as a reward in the next epoch. The method first checks that the current epoch is different from the last epoch, and if it's not changed exits the method. The reward are computed the following way. The contract keeps track of the last known total account balance. This balance consist of the initial contract balance, and all delegator account balances (including the owner) and all accumulated rewards. (Validation rewards are added automatically at the beginning of the epoch, while contract execution gas rebates are added after each transaction) When the method is called the contract uses the current total account balance (without attached deposit) and the subtracts the last total account balance. The difference is the total reward that has to be distributed. The fraction of the reward is awarded to the contract owner. The fraction is configurable by the owner, but can't exceed 100%. Note, that it might be unfair for the participants of the pool if the owner changes reward fee. But this owner will lose trust of the participants and it will lose future revenue in the long term. This should be enough to prevent owner from abusing reward fee. It could also be the case that they could change the reward fee to make their pool more attractive. The remaining part of the reward is added to the total staked balance. This action increases the price of each "stake" share without changing the amount of "stake" shares owned by different accounts. Which is effectively distributing the reward based on the number of shares. The owner's reward is converted into "stake" shares at the new price and added to the owner's account. It's done similarly to `stake` method but without debiting the unstaked balance of owner's account. Once the rewards are distributed the contract remembers the new total balance. ## Owner-only methods Contract owner can do the following: - Change public staking key. This action restakes with the new key. - Change reward fee fraction. - Vote on behalf of the pool. This is needed for the NEAR chain governance, and can be discussed in the following NEP: https://github.com/nearprotocol/NEPs/pull/62 - Pause and resume staking. When paused, the pool account unstakes everything (stakes 0) and doesn't restake. It doesn't affect the staking shares or reward distribution. Pausing is useful for node maintenance. Note, the contract is not paused by default. ## Staking pool contract guarantees and invariants This staking pool implementation guarantees the required properties of the staking pool standard: - The contract can't lose or lock tokens of users. - If a user deposited X, the user should be able to withdraw at least X. - If a user successfully staked X, the user can unstake at least X. - The contract should not lock unstaked funds for longer than 4 epochs after unstake action. It also has inner invariants: - The staking pool contract is secure if it doesn't have any access keys. - The price of a "stake" is always at least `1`. - The price of a "stake" share never decreases. - The reward fee is a fraction be from `0` to `1` inclusive. - The owner can't withdraw funds from other delegators. - The owner can't delete the staking pool account. NOTE: Guarantees are based on the no-slashing condition. Once slashing is introduced, the contract will no longer provide some guarantees. Read more about slashing in [Nightshade paper](https://near.ai/nightshade). ## Changelog ### `0.4.0` - Internal refactoring. Moving internal methods to `internal.rs` - Added 4 new delegator methods: - `deposit_and_stake` - to deposit and stake attached balance in one call. - `stake_all` - to stake all unstaked balance. - `unstake_all` - to unstake all staked balance. - `withdraw_all` - to withdraw all unstaked balance. ### `0.3.0` - Inner implementation has changed from using the hash of the account ID to use unmodified account ID as a key. - Added 3 new view methods: - `get_account` - Returns human readable representation of the account for the given account ID - `get_number_of_accounts` - returns the total number of accounts that have positive balance in this staking pool. - `get_accounts` - Returns up to the limit of accounts starting from the given offset ### `0.2.1` - Update `vote` interface to match the voting contract interface. ### `0.2.0` - Added new owners methods: `pause_staking` and `resume_staking`. Allows pool owner to unstake everything from the pool for node maintenance. - Added a new view method `is_staking_paused` to check whether the pool has paused staking. ## Pre-requisites To develop Rust contracts you would need to: * Install [Rustup](https://rustup.rs/): ```bash curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh ``` * Add wasm target to your toolchain: ```bash rustup target add wasm32-unknown-unknown ``` ## Building the contract ```bash ./build.sh ``` ## Usage Commands to deploy and initialize a staking contract: ```bash near create_account my_validator --masterAccount=owner near deploy --accountId=my_validator --wasmFile=res/staking_pool.wasm # Initialize staking pool at account `my_validator` for the owner account ID `owner`, given staking pool and 10% reward fee. near call my_validator new '{"owner_id": "owner", "stake_public_key": "CE3QAXyVLeScmY9YeEyR3Tw9yXfjBPzFLzroTranYtVb", "reward_fee_fraction": {"numerator": 10, "denominator": 100}}' --account_id owner # TODO: Delete all access keys from the `my_validator` account ``` As a user, to delegate money: ```bash near call my_validator deposit '{}' --accountId user1 --amount 100 near call my_validator stake '{"amount": "100000000000000000000000000"}' --accountId user1 ``` To update current rewards: ```bash near call my_validator ping '{}' --accountId user1 ``` View methods: ```bash # User1 total balance near view my_validator get_account_total_balance '{"account_id": "user1"}' # User1 staked balance near view my_validator get_account_staked_balance '{"account_id": "user1"}' # User1 unstaked balance near view my_validator get_account_unstaked_balance '{"account_id": "user1"}' # Whether user1 can withdraw now near view my_validator is_account_unstaked_balance_available '{"account_id": "user1"}' # Total staked balance of the entire pool near view my_validator get_total_staked_balance '{}' # Owner of the staking pool near view my_validator get_owner_id '{}' # Current reward fee near view my_validator get_reward_fee_fraction '{}' # Owners balance near view my_validator get_account_total_balance '{"account_id": "owner"}' # Staking key near view my_validator get_staking_key '{}' ``` To un-delegate, first run `unstake`: ```bash near call my_validator unstake '{"amount": "100000000000000000000000000"}' --accountId user1 ``` And after 3 epochs, run `withdraw`: ```bash near call my_validator withdraw '{"amount": "100000000000000000000000000"}' --accountId user1 ``` ## Interface ```rust pub struct RewardFeeFraction { pub numerator: u32, pub denominator: u32, } /// Initializes the contract with the given owner_id, initial staking public key (with ED25519 /// curve) and initial reward fee fraction that owner charges for the validation work. #[init] pub fn new( owner_id: AccountId, stake_public_key: Base58PublicKey, reward_fee_fraction: RewardFeeFraction, ); /// Distributes rewards and restakes if needed. pub fn ping(&mut self); /// Deposits the attached amount into the inner account of the predecessor. #[payable] pub fn deposit(&mut self); /// Deposits the attached amount into the inner account of the predecessor and stakes it. #[payable] pub fn deposit_and_stake(&mut self); /// Withdraws the non staked balance for given account. /// It's only allowed if the `unstake` action was not performed in the four most recent epochs. pub fn withdraw(&mut self, amount: U128); /// Withdraws the entire unstaked balance from the predecessor account. /// It's only allowed if the `unstake` action was not performed in the four most recent epochs. pub fn withdraw_all(&mut self); /// Stakes the given amount from the inner account of the predecessor. /// The inner account should have enough unstaked balance. pub fn stake(&mut self, amount: U128); /// Stakes all available unstaked balance from the inner account of the predecessor. pub fn stake_all(&mut self); /// Unstakes the given amount from the inner account of the predecessor. /// The inner account should have enough staked balance. /// The new total unstaked balance will be available for withdrawal in four epochs. pub fn unstake(&mut self, amount: U128); /// Unstakes all staked balance from the inner account of the predecessor. /// The new total unstaked balance will be available for withdrawal in four epochs. pub fn unstake_all(&mut self); /****************/ /* View methods */ /****************/ /// Returns the unstaked balance of the given account. pub fn get_account_unstaked_balance(&self, account_id: AccountId) -> U128; /// Returns the staked balance of the given account. /// NOTE: This is computed from the amount of "stake" shares the given account has and the /// current amount of total staked balance and total stake shares on the account. pub fn get_account_staked_balance(&self, account_id: AccountId) -> U128; /// Returns the total balance of the given account (including staked and unstaked balances). pub fn get_account_total_balance(&self, account_id: AccountId) -> U128; /// Returns `true` if the given account can withdraw tokens in the current epoch. pub fn is_account_unstaked_balance_available(&self, account_id: AccountId) -> bool; /// Returns the total staking balance. pub fn get_total_staked_balance(&self) -> U128; /// Returns account ID of the staking pool owner. pub fn get_owner_id(&self) -> AccountId; /// Returns the current reward fee as a fraction. pub fn get_reward_fee_fraction(&self) -> RewardFeeFraction; /// Returns the staking public key pub fn get_staking_key(&self) -> Base58PublicKey; /// Returns true if the staking is paused pub fn is_staking_paused(&self) -> bool; /// Returns human readable representation of the account for the given account ID. pub fn get_account(&self, account_id: AccountId) -> HumanReadableAccount; /// Returns the number of accounts that have positive balance on this staking pool. pub fn get_number_of_accounts(&self) -> u64; /// Returns the list of accounts pub fn get_accounts(&self, from_index: u64, limit: u64) -> Vec<HumanReadableAccount>; /*******************/ /* Owner's methods */ /*******************/ /// Owner's method. /// Updates current public key to the new given public key. pub fn update_staking_key(&mut self, stake_public_key: Base58PublicKey); /// Owner's method. /// Updates current reward fee fraction to the new given fraction. pub fn update_reward_fee_fraction(&mut self, reward_fee_fraction: RewardFeeFraction); /// Owner's method. /// Calls `vote(is_vote)` on the given voting contract account ID on behalf of the pool. pub fn vote(&mut self, voting_account_id: AccountId, is_vote: bool) -> Promise; /// Owner's method. /// Pauses pool staking. pub fn pause_staking(&mut self); /// Owner's method. /// Resumes pool staking. pub fn resume_staking(&mut self); ``` ## Migrating from an existing validator or contract This provides instructions to migrate your staked validator or a validator contract to a new contract #### Upgrade to the latest near-shell: ```bash npm install -g near-shell ``` #### Set Environment and Login: ##### If not logged into the browser, recover your account with the seed phrase first https://wallet.betanet.nearprotocol.com/create/ ```bash #Set the NEAR environment to the target network (betanet,testnet,mainnet) export NEAR_ENV=betanet near login ``` #### Unstake and Withdraw: ```bash #If you staked to your validator unstake, there is no withdraw near stake nearkat.betanet <staking public key> 0 #If you staked to a contract get the staked balance near view my_validator get_account_staked_balance '{"account_id": "user1"}' #Unsake by copying and pasting the staked balance near call my_validator unstake '{"amount": "100000000000000000000000000"}' --accountId user1 #Wait 4 epochs (12 hours) to withdraw and check if balance is available to withdraw near view my_validator is_account_unstaked_balance_available '{"account_id": "user1"}' #If is_account_unstaked_balance_available returns "true" withdraw near call my_validator withdraw '{"amount": "100000000000000000000000000"}' --accountId user1 ``` #### Download new contract with Git: ```bash mkdir staking-pool cd staking-pool git clone https://github.com/near/initial-contracts cd initial-contracts cd staking-pool ``` #### Build contract with Rust (This step is optional since the contract is compiled): ##### Install Rust: ```bash curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh #Add rust to current shell path source $HOME/.cargo/env ``` ##### Add wasm target to your toolchain: ```bash rustup target add wasm32-unknown-unknown ``` ##### Build: ```bash ./build.sh ``` #### Create a new account to deploy contract to - Set my_validator to the name you want publicly displayed - --masterAccount is your account you signed up to StakeWars2 with ```bash near create_account my_validator --masterAccount=owner ``` #### Deploy the contract to the new account ```bash near deploy --accountId=my_validator --wasmFile=res/staking_pool.wasm ``` #### Create a new node: **Note** after you NEAR is unstaked stop your node and create a new one to run as the contract account ##### Stop your node ```bash nearup stop ``` ##### Move your ~/.near/betanet folder, to remove references to any previous validator node ```bash mv ~/.near/betanet ~/.near/betanet_old ``` ##### Launch your new node With the command nearup betanet. Modify the launch command according to your actual validator configuration (e.g. using --nodocker and --binary-path) ##### Set your validator ID. Put your staking pool account (the one we called my_validator in the steps above) ##### Copy your validator public key, or issue the command (before the next step) ```bash cat ~/.near/betanet/validator_key.json |grep "public_key" ``` #### Initialize staking pool at account `my_validator` for the owner account ID `owner`, given staking pool and 10% reward fee ```bash near call my_validator new '{"owner_id": "owner", "stake_public_key": "CE3QAXyVLeScmY9YeEyR3Tw9yXfjBPzFLzroTranYtVb", "reward_fee_fraction": {"numerator": 10, "denominator": 100}}' --account_id owner ``` #### Check the current `seat price` to transfer the correct amount to your delegator(s) ```bash near validators next| grep "seat price" ``` #### Register a delegator account (repeat these steps for additional delegators) -- https://wallet.betanet.near.org -- backup your seed phrase -- transfer NEAR from your MasterAccount to the delegator account #### Login and authorize the delegator ```bash near login ``` #### Deposit NEAR from the delegator account to the valdiator contract ```bash near call my_validator deposit '{}' --accountId user1 --amount 100 ``` #### Stake the deposited amount to the validator contract ```bash near call my_validator stake '{"amount": "100000000000000000000000000"}' --accountId user1 ``` #### Check that your validator proposal was (Accepted) or deposit and stake more NEAR ```bash near proposals | grep my_validator #After some time check to make sure you're listed near validators next | grep my_validator ``` ## Common errors and resolutions #### ERROR while adding wasm32 to toolchain: error[E0463]: can't find crate for `core` You might have a nightly version of cargo, rustc, rustup, update to stable ```bash rustup update stable #Install target with stable version of Rustup rustup +stable target add wasm32-unknown-unknown ``` #### Error: TypedError: [-32000] Server error: account <accountId> does not exist while viewing You are not logged in ```bash near login ``` #### Error: GasExceeded [Error]: Exceeded the prepaid gas Add additional gas by adding the parameter: --gas 10000000000000000 #### Error: "wasm execution failed with error: FunctionCallError(MethodResolveError(MethodNotFound))" Your function call is incorrect or your contract is not updated # Meta Pool DAO # NEAR Blockchain Implementation ## Overview What is Meta-Pool and other non-Technical Documentation * [Meta Pool Docs](https://docs.metapool.app) ## Audits * [BlockSec Audit v1.1, March 1th, 2022](https://www.metapool.app/MetaPool_BlockSec_Audit_signed_v1.1.pdf) * [BlockSec Audit, staking wNEAR with Meta Pool on Aurora, March 20th, 2022](https://370551154-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MkhZe3MGAhTcvTLTzJF-887967055%2Fuploads%2FXE1zBF4pyaWCoR1zlKwW%2Fmain_signed.pdf?alt=media&token=5068e60d-2905-4d4f-a1cb-9d5fa4c607a3) ## Technical Documentation * [Technical Notes](https://narwallets.github.io/meta-pool/technical-notes) * [NEAR Live Contract Review (video)](https://www.youtube.com/watch?v=4gB-6yoas74) ### Repositories This is the Smart Contract repository. The Web App UI is at https://github.com/Narwallets/metastaking-webapp ### Change Log #### `2.0.0` - Dec 2022 - Added active rebalance, to supoprt vote.metapool.app #### `1.2.1` - May 2022 - NEAR gas computation will change, fix gas computation on dao upgrade instruction #### `1.2.0` - March 2022 - All audit recommendations implemented - set all staking pools weights in a single call #### `1.1.0` - Dec 2021 - new fn Realize_meta_massive to auto farm $META #### `1.0.0` - Apr 2021 - Full functionality - Simplified user flow - Desk check testing https://github.com/Narwallets/sc-desk-check-parser #### `0.1.0` - Nov 2020 - Initial version based on core-contracts/lockup and core-contracts/staking-pool - Deposit, withdraw - Distributed stake/unstake - NEAR/stNEAR liquidity pool, Add/Remove liquidity - META Minting with rewards ### TO DO & Help needed #### Smart Contract - [x] Deposit/withdraw - [x] Buy stNEAR/Stake - [x] Sell stNEAR/immediate unstake - [x] Classic unstake-wait-finish-unstake - [x] User trip-meter, measure rewards - [x] distribute staking/unstaking - [x] retrieve unstaked and ready - [x] NEAR/stNEAR Liquidity Pool, Add/Remove liquidity - [x] clearing mechanism on stake to restore liquidity in the NSLP - [x] act as a NEP-xxx MULTI-FUN-TOK (multi-token contract). Implement for NEAR, stNEAR and META - [ ] Dividends-pool stNEAR/META - [x] Staking-loans to whitelisted validators - [ ] Emergency Staking (from the nslp) to whitelisted validators #### Test - [x] Simulation tests - [x] Fuzzy Testing #### Staking pool list - [x] List selected staking pools, getting weight, staked & unstaked - [x] add a staking pool, set weight #### Governing - [x] Mint and distribute META with rewards - [x] Phase II - Governing DAO #### Infrastructure - [x] External cron to call distribute() - [x] compute remaining epoch time - [x] whitelist pools before adding them #### Expansions - [x] USDNEAR MVP: Create a collateral-based stablecoin similar to Compound's DAI, using NEAR & stNEAR as collateral ## Testing All tests are are performed in a separate project with an ad-hoc fuzzy test for metapool. The test generates random operations. We have a list of "invariants" the contract must satisfy to guarantee the internal accounting is consistent. We use a seeded random generator to create "operations" against the metapool (deposit, liquid-unstake, delayed-unstake, add-liquidity, remove-liquidity, compute-rewards, retrieve-funds-from-pools, rebalance) in any order and amount. After each successful operation we check the contract invariants again. This is our way to tests unprepared operations combinations and make sure the internal accounting remains consistent The tests are located in the folder metapool/test

Learn-NEAR_multiple-cross-contract-calls-js

.gitpod.yml README.md contract README.md babel.config.json build.sh deploy.sh package-lock.json package.json src contract.ts tsconfig.json integration-tests package-lock.json package.json src main.ava.ts package-lock.json package.json

# Complex Cross-Contract Calls This contract presents 3 examples on how to do complex cross-contract calls. Particularly, it shows: 1. How to batch method calls to a same contract. 2. How to call multiple contracts in parallel, each returning a different type. 3. Different ways of handling the responses in the callback. <br /> # Quickstart Clone this repository locally or [**open it in gitpod**](https://gitpod.io/#/github.com/near-examples/multiple-cross-contract-calls). Then follow these steps: ### 1. Install Dependencies ```bash npm install ``` ### 2. Test the Contract Deploy your contract in a sandbox and simulate interactions from users. ```bash npm test ``` --- # Learn More 1. Learn more about the contract through its [README](./contract/README.md). 2. Check [**our documentation**](https://docs.near.org/develop/welcome). # Complex Cross-Contract Calls Examples This contract presents 3 examples on how to do complex cross-contract calls. Particularly, it shows: 1. How to batch method calls to a same contract. 2. How to call multiple contracts in parallel, each returning a different type. 3. Different ways of handling the responses in the callback. <br /> ## 1. Batch Actions You can aggregate multiple actions directed towards one same contract into a batched transaction. Methods called this way are executed sequentially, with the added benefit that, if one fails then they **all get reverted**. ```typescript // Promise with batch actions NearPromise.new(this.helloAccount) .functionCall( ... ) .functionCall( ... ) .functionCall( ... ) .functionCall( ... ) .then( NearPromise.new(near.currentAccountId()).functionCall( "batch_actions_callback", NO_ARGS, NO_DEPOSIT, XCC_GAS ) ); ``` In this case, the callback has access to the value returned by the **last action** from the chain. <br /> ## 2. Calling Multiple Contracts A contract can call multiple other contracts. This creates multiple transactions that execute all in parallel. If one of them fails the rest **ARE NOT REVERTED**. ```typescript const helloPromise = NearPromise.new(this.helloAccount).functionCall( ... ); const counterPromise = NearPromise.new(this.counterAccount).functionCall( ... ); const guestbookPromise = NearPromise.new(this.guestbookAccount).functionCall( ... ); // Calling multiple contracts in parallel return helloPromise .and(counterPromise) .and(guestbookPromise) .then( NearPromise.new(near.currentAccountId()).functionCall( "multiple_contracts_callback", NO_ARGS, NO_DEPOSIT, XCC_GAS ) ); ``` In this case, the callback has access to an **array of responses**, which have either the value returned by each call, or an error message. <br /> ## 3. Calling Contracts With the Same Return Type This example is a particular case of the previous one ([2. Calling Multiple Contracts](#2-calling-multiple-contracts)). It simply showcases a different way to check the results by directly accessing the `promise_result` array. ```typescript return [0, 1, 2] .map((index) => { try { // near.promiseResult(i) has the result of the i-th call const result = near.promiseResult(index); let message: string; try { message = deserialize(result) as string; } catch { near.log(`Error deserializing call ${index} result.`); return ""; } near.log(`Call ${index} returned: ${message}`); return message; } catch { near.log(`Promise number ${index} failed.`); return ""; } }) .filter((message) => message.length > 0); ```

OmarMWarraich_Fundraising-Rust-Smart-Contract

.gitpod.yml README.md contract Cargo.toml README.md build.sh deploy.sh neardev dev-account.env src lib.rs pledge.rs integration-tests Cargo.toml src tests.rs package-lock.json package.json

near-rust-fundraising-contract ============================== This app was initialized with [create-near-app] Quick Start =========== If you haven't installed dependencies during setup: npm install Build and deploy your contract to TestNet with a temporary dev account: npm run deploy Test your contract: npm test If you have a frontend, run `npm start`. This will run a dev server. Exploring The Code ================== 1. The smart-contract code lives in the `/contract` folder. See the README there for more info. In blockchain apps the smart contract is the "backend" of your app. 2. The frontend code lives in the `/frontend` folder. `/frontend/index.html` is a great place to start exploring. Note that it loads in `/frontend/index.js`, this is your entrypoint to learn how the frontend connects to the NEAR blockchain. 3. Test your contract: `npm test`, this will run the tests in `integration-tests` directory. Deploy ====== Every smart contract in NEAR has its [own associated account][NEAR accounts]. When you run `npm run deploy`, your smart contract gets deployed to the live NEAR TestNet with a temporary dev account. When you're ready to make it permanent, here's how: Step 0: Install near-cli (optional) ------------------------------------- [near-cli] is a command line interface (CLI) for interacting with the NEAR blockchain. It was installed to the local `node_modules` folder when you ran `npm install`, but for best ergonomics you may want to install it globally: npm install --global near-cli Or, if you'd rather use the locally-installed version, you can prefix all `near` commands with `npx` Ensure that it's installed with `near --version` (or `npx near --version`) Step 1: Create an account for the contract ------------------------------------------ Each account on NEAR can have at most one contract deployed to it. If you've already created an account such as `your-name.testnet`, you can deploy your contract to `near-blank-project.your-name.testnet`. Assuming you've already created an account on [NEAR Wallet], here's how to create `near-blank-project.your-name.testnet`: 1. Authorize NEAR CLI, following the commands it gives you: near login 2. Create a subaccount (replace `YOUR-NAME` below with your actual account name): near create-account near-blank-project.YOUR-NAME.testnet --masterAccount YOUR-NAME.testnet Step 2: deploy the contract --------------------------- Use the CLI to deploy the contract to TestNet with your account ID. Replace `PATH_TO_WASM_FILE` with the `wasm` that was generated in `contract` build directory. near deploy --accountId near-blank-project.YOUR-NAME.testnet --wasmFile PATH_TO_WASM_FILE Step 3: set contract name in your frontend code ----------------------------------------------- Modify the line in `src/config.js` that sets the account name of the contract. Set it to the account id you used above. const CONTRACT_NAME = process.env.CONTRACT_NAME || 'near-blank-project.YOUR-NAME.testnet' Troubleshooting =============== On Windows, if you're seeing an error containing `EPERM` it may be related to spaces in your path. Please see [this issue](https://github.com/zkat/npx/issues/209) for more details. [create-near-app]: https://github.com/near/create-near-app [Node.js]: https://nodejs.org/en/download/package-manager/ [jest]: https://jestjs.io/ [NEAR accounts]: https://docs.near.org/concepts/basics/account [NEAR Wallet]: https://wallet.testnet.near.org/ [near-cli]: https://github.com/near/near-cli [gh-pages]: https://github.com/tschaub/gh-pages Screenshots =========== <img src='./Fund1.png' margin='0 auto' width='100%' height='auto'/> <img src='./Fund2.png' margin='0 auto' width='100%' height='auto'/> <img src='./Fund3.png' margin='0 auto' width='100%' height='auto'/> <img src='./Fund4.png' margin='0 auto' width='100%' height='auto'/> <img src='./Fund5_Pledge1.png' margin='0 auto' width='100%' height='auto'/> <img src='./Fund6_Pledge2.png' margin='0 auto' width='100%' height='auto'/> <img src='./Fund6_Pledge3.png' margin='0 auto' width='100%' height='auto'/> <img src='./Fund6_Pledge4.png' margin='0 auto' width='100%' height='auto'/> <img src='./Fund6_Pledge5.png' margin='0 auto' width='100%' height='auto'/> # Hello NEAR Contract The smart contract exposes two methods to enable storing and retrieving a greeting in the NEAR network. ```rust const DEFAULT_GREETING: &str = "Hello"; #[near_bindgen] #[derive(BorshDeserialize, BorshSerialize)] pub struct Contract { greeting: String, } impl Default for Contract { fn default() -> Self { Self{greeting: DEFAULT_GREETING.to_string()} } } #[near_bindgen] impl Contract { // Public: Returns the stored greeting, defaulting to 'Hello' pub fn get_greeting(&self) -> String { return self.greeting.clone(); } // Public: Takes a greeting, such as 'howdy', and records it pub fn set_greeting(&mut self, greeting: String) { // Record a log permanently to the blockchain! log!("Saving greeting {}", greeting); self.greeting = greeting; } } ``` <br /> # Quickstart 1. Make sure you have installed [rust](https://rust.org/). 2. Install the [`NEAR CLI`](https://github.com/near/near-cli#setup) <br /> ## 1. Build and Deploy the Contract You can automatically compile and deploy the contract in the NEAR testnet by running: ```bash ./deploy.sh ``` Once finished, check the `neardev/dev-account` file to find the address in which the contract was deployed: ```bash cat ./neardev/dev-account # e.g. dev-1659899566943-21539992274727 ``` <br /> ## 2. Retrieve the Greeting `get_greeting` is a read-only method (aka `view` method). `View` methods can be called for **free** by anyone, even people **without a NEAR account**! ```bash # Use near-cli to get the greeting near view <dev-account> get_greeting ``` <br /> ## 3. Store a New Greeting `set_greeting` changes the contract's state, for which it is a `change` method. `Change` methods can only be invoked using a NEAR account, since the account needs to pay GAS for the transaction. ```bash # Use near-cli to set a new greeting near call <dev-account> set_greeting '{"greeting":"howdy"}' --accountId <dev-account> ``` **Tip:** If you would like to call `set_greeting` using your own account, first login into NEAR using: ```bash # Use near-cli to login your NEAR account near login ``` and then use the logged account to sign the transaction: `--accountId <your-account>`.

mehtaphysical_assign-a-friend

README.md contract asconfig.json assembly as_types.d.ts index.ts tsconfig.json package.json front-end assignment.html index.html js assignment.js index.js package.json

# Assignment Example ## Setup ### Contract 1. go into the contract directory: `cd contract` 2. install dependencies: `yarn` 3. compile the contract into WASM: `yarn asb` 4. deploy the contract `yarn near dev-deploy build/release/contract.wasm` 5. store the contract id in an environment variable `CONTRACT_ID=$(cat neardev/dev-account)` 6. you can then call contract methods `yarn near call $CONTRACT_ID <METHOD_NAME> '{"id":"4241345707"}' --accountId <YOUR_ACCOUNT_ID>` ### Front-End 1. go into the front-end directory `cd front-end` 2. install dependencies `yarn` 3. replace the example contract id with yours `sed -i "s/dev-1626994298245-51059421517553/$(cat ../contract/neardev/dev-account)/" js/*.js` 3. run the front-end with `yarn live-server`

open-web-academy_Aurora-Ejemplos

BlockJobs README.md hardhat.config.js package-lock.json package.json script deploy.js test sample-test.js CanalDePagosBidireccional README.md hardhat.config.js package-lock.json package.json script deploy.js test sample-test.js CanalDePagosUnidireccional README.md hardhat.config.js package-lock.json package.json script deploy.js test sample-test.js ERC-1155 README.md hardhat.config.js package-lock.json package.json script deploy.js test sample-test.js ERC-20 README.md hardhat.config.js package.json scripts deploy.js tasks account.js approve.js balanceOf.js totalSupply.js transfer.js transferFrom.js ERC-721 README.md hardhat.config.js package-lock.json package.json script deploy.js test sample-test.js IterableMapping README.md hardhat.config.js package-lock.json package.json script deploy.js test sample-test.js Market README.md hardhat.config.js package-lock.json package.json script deploy.js sample-script.js test sample-test.js MerkleTree README.md hardhat.config.js package-lock.json package.json script deploy.js test sample-test.js README.md Subasta README.md hardhat.config.js package-lock.json package.json script deploy.js test sample-test.js SwapTokens README.md hardhat.config.js package-lock.json package.json script deploy.js test sample-test.js WalletMultifirma README.md hardhat.config.js package-lock.json package.json script deploy.js test sample-test.js dependabot.yml hardhat.config.js package.json

# Basic Sample Hardhat Project This project demonstrates a basic Hardhat use case. It comes with a sample contract, a test for that contract, a sample script that deploys that contract, and an example of a task implementation, which simply lists the available accounts. Try running some of the following tasks: ```shell npx hardhat accounts npx hardhat compile npx hardhat clean npx hardhat test npx hardhat node node scripts/sample-script.js npx hardhat help ``` # Basic Sample Hardhat Project This project demonstrates a basic Hardhat use case. It comes with a sample contract, a test for that contract, a sample script that deploys that contract, and an example of a task implementation, which simply lists the available accounts. Try running some of the following tasks: ```shell npx hardhat accounts npx hardhat compile npx hardhat clean npx hardhat test npx hardhat node node scripts/sample-script.js npx hardhat help ``` ## Introducción El objetivo principal de este tutorial es mostrar cómo implementar e interactuar con los contratos inteligentes de Solidity en Aurora utilizando HardHat. Este tutorial asume que está familiarizado con `HardHat` y los tokens ERC-20. Para más detalles sobre el estándar de token fungible, consulte la [Especificación estándar ERC-20] (https://eips.ethereum.org/EIPS/eip-20). ## Instalación Este tutorial asume que tiene Node.js 12+ y Yarn. Por favor vaya a [Cómo instalar Yarn](https://classic.yarnpkg.com/en/docs/install#mac-stable) si aún no tiene el comando yarn instalado localmente. - Para instalar los paquetes de requisitos previos, clone el repositorio de ejemplos: ```bash clon de git https://github.com/open-web-academy/Aurora-Examples cd Aurora-Examples/hardhat/erc20/ ``` - Agregue su clave privada de Aurora (de MetaMask) al archivo __.env__ y luego ejecute yarn: <br/> ```bash echo "AURORA_CLAVE_PRIVADA=TU_AURORA_CLAVE_PRIVADA_AQUÍ" >> .env instalación de yarn ``` ## Implementar ERC-20 El ejemplo ERC-20 se trata de un token de sandía simple 🍉. Que luego podrías intercambiar por sandías reales 🍉🍉🍉. El suministro total es `1000000`, el minter es la dirección del implementador del contrato (quien hace el deploy) y los decimales son `0` Para implementar el contrato de token 'ERC-20', use el siguiente comando: ```bash $ make deploy NETWORK=testnet_aurora yarn hardat run scripts/deploy.js --network testnet_aurora yarn run v1.22.10 Deploying contracts with the account: 0x6A33382de9f73B846878a57500d055B981229ac4 Account balance: 2210010200000000000 Market deployed to: 0xD7f2A76F5DA173043E6c61a0A18D835809A07766 ✨ Done in 14.96s. # exportar la dirección del token $ export TOKEN_ADDRESS='YOUR OUTPUT FROM DEPLOY (e.g. 0xD7f2A76F5DA173043E6c61a0A18D835809A07766)' ``` ## HardHat Las tareas HardHat se encargan de analizar los valores proporcionados para cada parámetro. Obtiene los valores, realiza la validación de tipo y los convierte en el tipo deseado. En este ejemplo, revisaremos un conjunto de tareas HardHat predefinidas que utiliza HardHat Runtime Environment ([HRE](https://hardhat.org/advanced/hardhat-runtime-environment.html)). Para completar el tutorial, debes usarlos en el mismo orden: ### Saldo ETH La siguiente tarea de HardHat utiliza el complemento `Web3` para obtener el saldo de la cuenta: ```javascript task("balance", "Prints an account's balance") .addParam("account", "The account's address") .setAction(async taskArgs => { const account = web3.utils.toChecksumAddress(taskArgs.account); const balance = await web3.eth.getBalance(account); console.log(web3.utils.fromWei(balance, "ether"), "ETH"); }); ``` Para obtener el saldo `ETH`, utilice el siguiente comando: ```bash npx hardhat balance --network testnet_aurora --account 0x6A33382de9f73B846878a57500d055B981229ac4 2.2100102 ETH ``` Debería notar que `--network` es una opción integrada global (parámetro) en HardHat. También lo usaremos para los siguientes comandos. ### Suministro total El siguiente script de tarea obtiene el suministro total del token Watermelon ERC-20. Primero adjunta el contrato de token, obtiene la dirección del remitente y finalmente recupera el suministro total llamando al método `totalSupply()` en nuestro contrato ERC-20. El `--token` dirección es la dirección del contrato ERC-20. ```javascript task("totalSupply", "Total supply of ERC-20 token") .addParam("token", "Token address") .setAction(async function ({ token }, { ethers: { getSigners } }, runSuper) { const watermelonToken = await ethers.getContractFactory("Market") const watermelon = watermelonToken.attach(token) const [minter] = await ethers.getSigners(); const totalSupply = (await (await watermelon.connect(minter)).totalSupply()).toNumber() console.log(`Total Supply is ${totalSupply}`); }); ``` Para obtener `totalSupply`, use el siguiente comando: ```bash $ npx hardhat totalSupply --token $TOKEN_ADDRESS --network testnet_aurora Total Supply is 1000000 ``` ### Transferir ERC-20 La opción de "transfer" permite que cualquier persona que tenga tokens ERC-20 pueda transferir a cualquier dirección de Ethereum. En el siguiente script, la dirección minter acuñará (implícitamente) y transferirá tokens `10 WTM` a la dirección `spender`: ```javascript task("transfer", "ERC-20 transfer") .addParam("token", "Token address") .addParam("spender", "Spender address") .addParam("amount", "Token amount") .setAction(async function ({ token, spender, amount }, { ethers: { getSigners } }, runSuper) { const watermelonToken = await ethers.getContractFactory("Market") const watermelon = watermelonToken.attach(token) const [minter] = await ethers.getSigners(); await (await watermelon.connect(minter).transfer(spender, amount)).wait() console.log(`${minter.address} has transferred ${amount} to ${spender}`); }); ``` Para llamar a `transfer`, usa el siguiente comando: ```bash $ npx hardhat transfer --token $TOKEN_ADDRESS --amount 10 --spender 0x2531a4D108619a20ACeE88C4354a50e9aC48ecfe --network testnet_aurora 0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266 has transferred 10 tokens to 0x2531a4D108619a20ACeE88C4354a50e9aC48ecfe ``` ### Saldo de ERC-20 Podemos probar que el "gastador" o "spender" ha recibido la cantidad exacta de fichas llamando a `balanceOf` como se muestra a continuación: ```javascript task("balanceOf", "Total supply of ERC-20 token") .addParam("token", "Token address") .addParam("account", "Account address") .setAction(async function ({ token, account }, { ethers: { getSigners } }, runSuper) { const watermelonToken = await ethers.getContractFactory("Market") const watermelon = watermelonToken.attach(token) const [minter] = await ethers.getSigners(); const balance = (await (await watermelon.connect(minter)).balanceOf(account)).toNumber() console.log(`Account ${account} has a total token balance: ${balance} WTM`); }); ``` Para obtener el `saldo`, utilice el siguiente comando: ```bash $ npx hardhat balanceOf --token $TOKEN_ADDRESS --account 0x6A33382de9f73B846878a57500d055B981229ac4 --network testnet_aurora Account 0x6A33382de9f73B846878a57500d055B981229ac4 has a total token balance: 999970 WTM ``` ### Aprobar ERC-20 En algunos casos, en lugar de llamar a `transfer` directamente, el remitente puede approve una cantidad específica de tokens para ser retirados de su cuenta a la dirección específica del destinatario más tarde. Esto se puede hacer llamando a `approve` luego llamar a `transferFrom`. ```javascript task("approve", "ERC-20 approve") .addParam("token", "Token address") .addParam("spender", "Spender address") .addParam("amount", "Token amount") .setAction(async function ({ token, spender, amount }, { ethers: { getSigners } }, runSuper) { const watermelonToken = await ethers.getContractFactory("Market") const watermelon = watermelonToken.attach(token) const [sender] = await ethers.getSigners(); await (await watermelon.connect(sender).approve(spender, amount)).wait() console.log(`${sender.address} has approved ${amount} tokens to ${spender}`); }); module.exports = {}; ``` Para llamar a `approve`, use el siguiente comando: ```bash npx hardhat approve --token $TOKEN_ADDRESS --spender 0x8722C88e82AbCC639148Ab6128Cd63333B2Ad771 --amount 10 --network testnet_aurora 0x6A33382de9f73B846878a57500d055B981229ac4 has approved 10 tokens to 0x8722C88e82AbCC639148Ab6128Cd63333B2Ad771 ``` ### TransferFrom de ERC-20 Después de aprobar los tokens, un destinatario puede llamar a `transferFrom` para mover la "allowance" a su cuenta. ```javascript task("transferFrom", "ERC-20 transferFrom") .addParam("token", "Token address") .addParam("sender", "Sender address") .addParam("amount", "Token amount") .setAction(async function ({ token, sender, amount }, { ethers: { getSigners } }, runSuper) { const watermelonToken = await ethers.getContractFactory("Market") const watermelon = watermelonToken.attach(token) const [recipient] = await ethers.getSigners() console.log(recipient.address); await (await watermelon.connect(recipient).transferFrom(sender, recipient.address, amount)).wait() console.log(`${recipient.address} has received ${amount} tokens from ${sender}`) }); ``` Para llamar a `transferFrom`, usa el siguiente comando: ```bash # exportar la clave privada del destinatario AURORA_PRIVATE_KEY="THE RECIPIENT PRIVATE KEY" npx hardhat transferFrom --token $TOKEN_ADDRESS --sender 0x6A33382de9f73B846878a57500d055B981229ac4 --amount 10 --network testnet_aurora 0x8722C88e82AbCC639148Ab6128Cd63333B2Ad771 has received 10 tokens from 0x6A33382de9f73B846878a57500d055B981229ac4 ``` Comprobando el saldo de `0x8722C88e82AbCC639148Ab6128Cd63333B2Ad771`: ```bash npx hardhat balanceOf --token $TOKEN_ADDRESS --account 0x8722C88e82AbCC639148Ab6128Cd63333B2Ad771 --network testnet_aurora Account 0x8722C88e82AbCC639148Ab6128Cd63333B2Ad771 has a total token balance: 10 WTM ``` ## Conclusión En este tutorial, implementamos un token ERC-20 usando HardHat en la testnet de Aurora. Aprobamos u transferimos los tokens ERC-20. Añadimos otras tareas como obtener el suministro total y el saldo de la cuenta. Como se pudo observar la única diferencia a deployar en Ethereum MainNet es hacer el cambio al Aurora RPC endpoint en el archivo `hardhat.config.js`. # Basic Sample Hardhat Project This project demonstrates a basic Hardhat use case. It comes with a sample contract, a test for that contract, a sample script that deploys that contract, and an example of a task implementation, which simply lists the available accounts. Try running some of the following tasks: ```shell npx hardhat accounts npx hardhat compile npx hardhat clean npx hardhat test npx hardhat node node scripts/sample-script.js npx hardhat help ``` # Basic Sample Hardhat Project This project demonstrates a basic Hardhat use case. It comes with a sample contract, a test for that contract, a sample script that deploys that contract, and an example of a task implementation, which simply lists the available accounts. Try running some of the following tasks: ```shell npx hardhat accounts npx hardhat compile npx hardhat clean npx hardhat test npx hardhat node node scripts/sample-script.js npx hardhat help ``` # Ejemplos desarrollados usando HardHat En cada una de las carpetas se encuentran diferentes aplicaciones buscando servirle de ejemplos, cuyos contratos están desarrollados en Solidity y configurados para deployar en las redes de Aurora: 'testnet_aurora' o 'local_aurora'. Para deployar los contratos deberá instalar las dependencias dentro de la carpeta de cada aplicación, con: 'npm install' En algunos casos es necesario instalar también los contratos de OpenZeppelin con: ``` npm install @openzeppelin/contracts ``` Para deployar un contrato, dentro de la carpeta correspondiente ejecutar: ``` npx hardhat run /script/deploy.js --network <nombre de la red> ``` Antes de hacer el deploy debe ir al archivo deploy.js y en el método deploy, dentro de los paréntesis, escribir los parámentros que recibirá el constructor, separados por comas y con conchetes en caso de tratarse de un string. Para hacer algunas pruebas puede, ubicándose dentro de la carpeta ERC-20 y una vez deployado el contrato, ejecutar los siguientes comandos: ```shell npx hardhat accounts npx hardhat compile npx hardhat clean npx hardhat test npx hardhat node node scripts/sample-script.js npx hardhat help ``` En caso de querer hacer pruebas localmente instalar HardHat con 'npm install --save-dev hardhat' y luego ejecutar 'npx hardhat node' # Basic Sample Hardhat Project This project demonstrates a basic Hardhat use case. It comes with a sample contract, a test for that contract, a sample script that deploys that contract, and an example of a task implementation, which simply lists the available accounts. Try running some of the following tasks: ```shell npx hardhat accounts npx hardhat compile npx hardhat clean npx hardhat test npx hardhat node node scripts/sample-script.js npx hardhat help ``` # Basic Sample Hardhat Project This project demonstrates a basic Hardhat use case. It comes with a sample contract, a test for that contract, a sample script that deploys that contract, and an example of a task implementation, which simply lists the available accounts. Try running some of the following tasks: ```shell npx hardhat accounts npx hardhat compile npx hardhat clean npx hardhat test npx hardhat node node scripts/sample-script.js npx hardhat help ``` # Basic Sample Hardhat Project This project demonstrates a basic Hardhat use case. It comes with a sample contract, a test for that contract, a sample script that deploys that contract, and an example of a task implementation, which simply lists the available accounts. Try running some of the following tasks: ```shell npx hardhat accounts npx hardhat compile npx hardhat clean npx hardhat test npx hardhat node node scripts/sample-script.js npx hardhat help ``` # Basic Sample Hardhat Project This project demonstrates a basic Hardhat use case. It comes with a sample contract, a test for that contract, a sample script that deploys that contract, and an example of a task implementation, which simply lists the available accounts. Try running some of the following tasks: ```shell npx hardhat accounts npx hardhat compile npx hardhat clean npx hardhat test npx hardhat node node scripts/sample-script.js npx hardhat help ``` # Basic Sample Hardhat Project This project demonstrates a basic Hardhat use case. It comes with a sample contract, a test for that contract, a sample script that deploys that contract, and an example of a task implementation, which simply lists the available accounts. Try running some of the following tasks: ```shell npx hardhat accounts npx hardhat compile npx hardhat clean npx hardhat test npx hardhat node node scripts/sample-script.js npx hardhat help ``` # Basic Sample Hardhat Project This project demonstrates a basic Hardhat use case. It comes with a sample contract, a test for that contract, a sample script that deploys that contract, and an example of a task implementation, which simply lists the available accounts. Try running some of the following tasks: ```shell npx hardhat accounts npx hardhat compile npx hardhat clean npx hardhat test npx hardhat node node scripts/sample-script.js npx hardhat help ``` # Basic Sample Hardhat Project This project demonstrates a basic Hardhat use case. It comes with a sample contract, a test for that contract, a sample script that deploys that contract, and an example of a task implementation, which simply lists the available accounts. Try running some of the following tasks: ```shell npx hardhat accounts npx hardhat compile npx hardhat clean npx hardhat test npx hardhat node node scripts/sample-script.js npx hardhat help ```

lk2684754_file_hosting

Cargo.toml README.md contract build.sh neardev dev-account.env src lib.rs target .rustc_info.json release .fingerprint Inflector-dba563b0abe56474 lib-inflector.json autocfg-cbc9b39bd91ac4aa lib-autocfg.json borsh-derive-9d239fc8cef59ea2 lib-borsh-derive.json borsh-derive-internal-36c63d32942bfbb4 lib-borsh-derive-internal.json borsh-schema-derive-internal-13965f0246bba67b lib-borsh-schema-derive-internal.json convert_case-00a3ee0a52745f02 lib-convert_case.json derive_more-5ea9442d35250a3b lib-derive_more.json generic-array-3f536cad239a5dba build-script-build-script-build.json hashbrown-0de786327e14e8fc lib-hashbrown.json indexmap-254e4157b4025a02 run-build-script-build-script-build.json indexmap-98e46bb576b709f8 lib-indexmap.json indexmap-adce9c46259a9310 build-script-build-script-build.json itoa-e6520912be1b5d5e lib-itoa.json memchr-56364684461a047c build-script-build-script-build.json near-rpc-error-core-de8a040cdc699de4 lib-near-rpc-error-core.json 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# Near_Contract_File_Hosting The near file_hosting contract implemented by rust # Building To build run: ```shell env 'RUSTFLAGS=-C link-arg=-s' cargo build --target wasm32-unknown-unknown --release ``` # Using this contract This smart contract will get deployed to your NEAR account. For this example, please create a new NEAR account. Because NEAR allows the ability to upgrade contracts on the same account, initialization functions must be cleared. If you'd like to run this example on a NEAR account that has had prior contracts deployed, please use the `near-cli` command `near delete`, and then recreate it in Wallet. To create (or recreate) an account, please follow the directions on [NEAR Wallet](https://wallet.near.org/). Switch to `mainnet`. You can skip this step to use `testnet` as a default network. ```shell export NEAR_ENV=mainnet ``` In the project root, log in to your newly created account with `near-cli` by following the instructions after this command: ```shell near login ``` To make this tutorial easier to copy/paste, we're going to set an environment variable for your account id. In the below command, replace `MY_ACCOUNT_NAME` with the account name you just logged in with, including the `.near`: ```shell ID=MY_ACCOUNT_NAME ``` You can tell if the environment variable is set correctly if your command line prints the account name after this command: ```shell echo $ID ``` Create account: ```shell near create-account store.$ID --masterAccount $ID --initialBalance 20 ``` ## Example Now we can deploy the compiled contract in this example to your account: ```shell near deploy --wasmFile target/wasm32-unknown-unknown/release/store.wasm --accountId store.$store ``` Sign up for an account with Near ID: ```shell near call store.$ID reg_account --accountId $store ``` CLog out of an account with Near ID: ```shell near call store.$ID deactivate_account --accountId $ID ``` Record the hash of the user storage file, and record the storage date with the timestamp: ```shell near call store.$ID record '{"file_hash":"test_file_hash"}' --accountId $ID ``` Obtain the timestamp stored by the user using the file hash: ```shell near call store.$ID get_record '{"file_hash":"test_file_hash"}' --accountId $ID ``` Gets a list of all file stores: ```shell near view store.$ID get_lists --accountId $ID ```

giobiba_Near-voting-app

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tsconfig-json.d.ts union-to-intersection.d.ts utilities.d.ts value-of.d.ts ts41 camel-case.d.ts delimiter-case.d.ts index.d.ts kebab-case.d.ts pascal-case.d.ts snake-case.d.ts universal-url README.md browser.js index.js package.json uri-js README.md dist es5 uri.all.d.ts uri.all.js uri.all.min.d.ts uri.all.min.js esnext index.d.ts index.js regexps-iri.d.ts regexps-iri.js regexps-uri.d.ts regexps-uri.js schemes http.d.ts http.js https.d.ts https.js mailto.d.ts mailto.js urn-uuid.d.ts urn-uuid.js urn.d.ts urn.js ws.d.ts ws.js wss.d.ts wss.js uri.d.ts uri.js util.d.ts util.js package.json v8-compile-cache CHANGELOG.md README.md package.json v8-compile-cache.js visitor-as .github workflows test.yml README.md as index.d.ts index.js asconfig.json dist astBuilder.d.ts astBuilder.js base.d.ts base.js baseTransform.d.ts baseTransform.js decorator.d.ts decorator.js examples capitalize.d.ts capitalize.js exportAs.d.ts exportAs.js functionCallTransform.d.ts functionCallTransform.js includeBytesTransform.d.ts includeBytesTransform.js list.d.ts list.js index.d.ts index.js path.d.ts path.js simpleParser.d.ts simpleParser.js transformer.d.ts transformer.js utils.d.ts utils.js visitor.d.ts visitor.js package.json tsconfig.json webidl-conversions LICENSE.md README.md lib index.js package.json whatwg-url LICENSE.txt README.md lib URL-impl.js URL.js URLSearchParams-impl.js URLSearchParams.js infra.js public-api.js url-state-machine.js urlencoded.js utils.js package.json which-module CHANGELOG.md README.md index.js package.json which CHANGELOG.md README.md package.json which.js word-wrap README.md index.d.ts index.js package.json wrap-ansi index.js package.json readme.md wrappy README.md package.json wrappy.js y18n CHANGELOG.md README.md build lib cjs.js index.js platform-shims node.js package.json yallist README.md iterator.js package.json yallist.js yargs-parser CHANGELOG.md LICENSE.txt README.md browser.js build lib index.js string-utils.js tokenize-arg-string.js yargs-parser-types.js yargs-parser.js package.json yargs CHANGELOG.md README.md build lib argsert.js command.js completion-templates.js completion.js middleware.js parse-command.js typings common-types.js yargs-parser-types.js usage.js utils apply-extends.js is-promise.js levenshtein.js obj-filter.js process-argv.js set-blocking.js which-module.js validation.js yargs-factory.js yerror.js helpers index.js package.json locales be.json de.json en.json es.json fi.json fr.json hi.json hu.json id.json it.json ja.json ko.json nb.json nl.json nn.json pirate.json pl.json pt.json pt_BR.json ru.json th.json tr.json zh_CN.json zh_TW.json package.json package-lock.json package.json package.json src App.js __mocks__ fileMock.js components Home.js NewPoll.js Vote.js config.js global.css index.html index.js jest.init.js main.test.js utils.js wallet login index.html | features not yet implemented issues with the tests differences between PCRE and JS regex | | |

# base-x [](https://www.npmjs.org/package/base-x) [](https://travis-ci.org/cryptocoinjs/base-x) [](https://github.com/feross/standard) Fast base encoding / decoding of any given alphabet using bitcoin style leading zero compression. **WARNING:** This module is **NOT RFC3548** compliant, it cannot be used for base16 (hex), base32, or base64 encoding in a standards compliant manner. ## Example Base58 ``` javascript var BASE58 = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz' var bs58 = require('base-x')(BASE58) var decoded = bs58.decode('5Kd3NBUAdUnhyzenEwVLy9pBKxSwXvE9FMPyR4UKZvpe6E3AgLr') console.log(decoded) // => <Buffer 80 ed db dc 11 68 f1 da ea db d3 e4 4c 1e 3f 8f 5a 28 4c 20 29 f7 8a d2 6a f9 85 83 a4 99 de 5b 19> console.log(bs58.encode(decoded)) // => 5Kd3NBUAdUnhyzenEwVLy9pBKxSwXvE9FMPyR4UKZvpe6E3AgLr ``` ### Alphabets See below for a list of commonly recognized alphabets, and their respective base. Base | Alphabet ------------- | ------------- 2 | `01` 8 | `01234567` 11 | `0123456789a` 16 | `0123456789abcdef` 32 | `0123456789ABCDEFGHJKMNPQRSTVWXYZ` 32 | `ybndrfg8ejkmcpqxot1uwisza345h769` (z-base-32) 36 | `0123456789abcdefghijklmnopqrstuvwxyz` 58 | `123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz` 62 | `0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ` 64 | `ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/` 67 | `ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_.!~` ## How it works It encodes octet arrays by doing long divisions on all significant digits in the array, creating a representation of that number in the new base. Then for every leading zero in the input (not significant as a number) it will encode as a single leader character. This is the first in the alphabet and will decode as 8 bits. The other characters depend upon the base. For example, a base58 alphabet packs roughly 5.858 bits per character. This means the encoded string 000f (using a base16, 0-f alphabet) will actually decode to 4 bytes unlike a canonical hex encoding which uniformly packs 4 bits into each character. While unusual, this does mean that no padding is required and it works for bases like 43. ## LICENSE [MIT](LICENSE) A direct derivation of the base58 implementation from [`bitcoin/bitcoin`](https://github.com/bitcoin/bitcoin/blob/f1e2f2a85962c1664e4e55471061af0eaa798d40/src/base58.cpp), generalized for variable length alphabets. # brace-expansion [Brace expansion](https://www.gnu.org/software/bash/manual/html_node/Brace-Expansion.html), as known from sh/bash, in JavaScript. [](http://travis-ci.org/juliangruber/brace-expansion) [](https://www.npmjs.org/package/brace-expansion) [](https://greenkeeper.io/) [](https://ci.testling.com/juliangruber/brace-expansion) ## Example ```js var expand = require('brace-expansion'); expand('file-{a,b,c}.jpg') // => ['file-a.jpg', 'file-b.jpg', 'file-c.jpg'] expand('-v{,,}') // => ['-v', '-v', '-v'] expand('file{0..2}.jpg') // => ['file0.jpg', 'file1.jpg', 'file2.jpg'] expand('file-{a..c}.jpg') // => ['file-a.jpg', 'file-b.jpg', 'file-c.jpg'] expand('file{2..0}.jpg') // => ['file2.jpg', 'file1.jpg', 'file0.jpg'] expand('file{0..4..2}.jpg') // => ['file0.jpg', 'file2.jpg', 'file4.jpg'] expand('file-{a..e..2}.jpg') // => ['file-a.jpg', 'file-c.jpg', 'file-e.jpg'] expand('file{00..10..5}.jpg') // => ['file00.jpg', 'file05.jpg', 'file10.jpg'] expand('{{A..C},{a..c}}') // => ['A', 'B', 'C', 'a', 'b', 'c'] expand('ppp{,config,oe{,conf}}') // => ['ppp', 'pppconfig', 'pppoe', 'pppoeconf'] ``` ## API ```js var expand = require('brace-expansion'); ``` ### var expanded = expand(str) Return an array of all possible and valid expansions of `str`. If none are found, `[str]` is returned. Valid expansions are: ```js /^(.*,)+(.+)?$/ // {a,b,...} ``` A comma separated list of options, like `{a,b}` or `{a,{b,c}}` or `{,a,}`. ```js /^-?\d+\.\.-?\d+(\.\.-?\d+)?$/ // {x..y[..incr]} ``` A numeric sequence from `x` to `y` inclusive, with optional increment. If `x` or `y` start with a leading `0`, all the numbers will be padded to have equal length. Negative numbers and backwards iteration work too. ```js /^-?\d+\.\.-?\d+(\.\.-?\d+)?$/ // {x..y[..incr]} ``` An alphabetic sequence from `x` to `y` inclusive, with optional increment. `x` and `y` must be exactly one character, and if given, `incr` must be a number. For compatibility reasons, the string `${` is not eligible for brace expansion. ## Installation With [npm](https://npmjs.org) do: ```bash npm install brace-expansion ``` ## Contributors - [Julian Gruber](https://github.com/juliangruber) - [Isaac Z. Schlueter](https://github.com/isaacs) ## Sponsors This module is proudly supported by my [Sponsors](https://github.com/juliangruber/sponsors)! Do you want to support modules like this to improve their quality, stability and weigh in on new features? Then please consider donating to my [Patreon](https://www.patreon.com/juliangruber). Not sure how much of my modules you're using? Try [feross/thanks](https://github.com/feross/thanks)! ## License (MIT) Copyright (c) 2013 Julian Gruber &lt;julian@juliangruber.com&gt; Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ## Timezone support In order to provide support for timezones, without relying on the JavaScript host or any other time-zone aware environment, this library makes use of teh IANA Timezone Database directly: https://www.iana.org/time-zones The database files are parsed by the scripts in this folder, which emit AssemblyScript code which is used to process the various rules at runtime. # rechoir [](http://travis-ci.org/tkellen/js-rechoir) > Require any supported file as a node module. [](https://nodei.co/npm/rechoir/) ## What is it? This module, in conjunction with [interpret]-like objects can register any file type the npm ecosystem has a module loader for. This library is a dependency of [Liftoff]. ## API ### prepare(config, filepath, requireFrom) Look for a module loader associated with the provided file and attempt require it. If necessary, run any setup required to inject it into [require.extensions](http://nodejs.org/api/globals.html#globals_require_extensions). `config` An [interpret]-like configuration object. `filepath` A file whose type you'd like to register a module loader for. `requireFrom` An optional path to start searching for the module required to load the requested file. Defaults to the directory of `filepath`. If calling this method is successful (aka: it doesn't throw), you can now require files of the type you requested natively. An error with a `failures` property will be thrown if the module loader(s) configured for a given extension cannot be registered. If a loader is already registered, this will simply return `true`. **Note:** While rechoir will automatically load and register transpilers like `coffee-script`, you must provide a local installation. The transpilers are **not** bundled with this module. #### Usage ```js const config = require('interpret').extensions; const rechoir = require('rechoir'); rechoir.prepare(config, './test/fixtures/test.coffee'); rechoir.prepare(config, './test/fixtures/test.csv'); rechoir.prepare(config, './test/fixtures/test.toml'); console.log(require('./test/fixtures/test.coffee')); console.log(require('./test/fixtures/test.csv')); console.log(require('./test/fixtures/test.toml')); ``` [interpret]: http://github.com/tkellen/js-interpret [Liftoff]: http://github.com/tkellen/js-liftoff # URI.js URI.js is an [RFC 3986](http://www.ietf.org/rfc/rfc3986.txt) compliant, scheme extendable URI parsing/validating/resolving library for all JavaScript environments (browsers, Node.js, etc). It is also compliant with the IRI ([RFC 3987](http://www.ietf.org/rfc/rfc3987.txt)), IDNA ([RFC 5890](http://www.ietf.org/rfc/rfc5890.txt)), IPv6 Address ([RFC 5952](http://www.ietf.org/rfc/rfc5952.txt)), IPv6 Zone Identifier ([RFC 6874](http://www.ietf.org/rfc/rfc6874.txt)) specifications. URI.js has an extensive test suite, and works in all (Node.js, web) environments. It weighs in at 6.4kb (gzipped, 17kb deflated). ## API ### Parsing URI.parse("uri://user:pass@example.com:123/one/two.three?q1=a1&q2=a2#body"); //returns: //{ // scheme : "uri", // userinfo : "user:pass", // host : "example.com", // port : 123, // path : "/one/two.three", // query : "q1=a1&q2=a2", // fragment : "body" //} ### Serializing URI.serialize({scheme : "http", host : "example.com", fragment : "footer"}) === "http://example.com/#footer" ### Resolving URI.resolve("uri://a/b/c/d?q", "../../g") === "uri://a/g" ### Normalizing URI.normalize("HTTP://ABC.com:80/%7Esmith/home.html") === "http://abc.com/~smith/home.html" ### Comparison URI.equal("example://a/b/c/%7Bfoo%7D", "eXAMPLE://a/./b/../b/%63/%7bfoo%7d") === true ### IP Support //IPv4 normalization URI.normalize("//192.068.001.000") === "//192.68.1.0" //IPv6 normalization URI.normalize("//[2001:0:0DB8::0:0001]") === "//[2001:0:db8::1]" //IPv6 zone identifier support URI.parse("//[2001:db8::7%25en1]"); //returns: //{ // host : "2001:db8::7%en1" //} ### IRI Support //convert IRI to URI URI.serialize(URI.parse("http://examplé.org/rosé")) === "http://xn--exampl-gva.org/ros%C3%A9" //convert URI to IRI URI.serialize(URI.parse("http://xn--exampl-gva.org/ros%C3%A9"), {iri:true}) === "http://examplé.org/rosé" ### Options All of the above functions can accept an additional options argument that is an object that can contain one or more of the following properties: * `scheme` (string) Indicates the scheme that the URI should be treated as, overriding the URI's normal scheme parsing behavior. * `reference` (string) If set to `"suffix"`, it indicates that the URI is in the suffix format, and the validator will use the option's `scheme` property to determine the URI's scheme. * `tolerant` (boolean, false) If set to `true`, the parser will relax URI resolving rules. * `absolutePath` (boolean, false) If set to `true`, the serializer will not resolve a relative `path` component. * `iri` (boolean, false) If set to `true`, the serializer will unescape non-ASCII characters as per [RFC 3987](http://www.ietf.org/rfc/rfc3987.txt). * `unicodeSupport` (boolean, false) If set to `true`, the parser will unescape non-ASCII characters in the parsed output as per [RFC 3987](http://www.ietf.org/rfc/rfc3987.txt). * `domainHost` (boolean, false) If set to `true`, the library will treat the `host` component as a domain name, and convert IDNs (International Domain Names) as per [RFC 5891](http://www.ietf.org/rfc/rfc5891.txt). ## Scheme Extendable URI.js supports inserting custom [scheme](http://en.wikipedia.org/wiki/URI_scheme) dependent processing rules. Currently, URI.js has built in support for the following schemes: * http \[[RFC 2616](http://www.ietf.org/rfc/rfc2616.txt)\] * https \[[RFC 2818](http://www.ietf.org/rfc/rfc2818.txt)\] * ws \[[RFC 6455](http://www.ietf.org/rfc/rfc6455.txt)\] * wss \[[RFC 6455](http://www.ietf.org/rfc/rfc6455.txt)\] * mailto \[[RFC 6068](http://www.ietf.org/rfc/rfc6068.txt)\] * urn \[[RFC 2141](http://www.ietf.org/rfc/rfc2141.txt)\] * urn:uuid \[[RFC 4122](http://www.ietf.org/rfc/rfc4122.txt)\] ### HTTP/HTTPS Support URI.equal("HTTP://ABC.COM:80", "http://abc.com/") === true URI.equal("https://abc.com", "HTTPS://ABC.COM:443/") === true ### WS/WSS Support URI.parse("wss://example.com/foo?bar=baz"); //returns: //{ // scheme : "wss", // host: "example.com", // resourceName: "/foo?bar=baz", // secure: true, //} URI.equal("WS://ABC.COM:80/chat#one", "ws://abc.com/chat") === true ### Mailto Support URI.parse("mailto:alpha@example.com,bravo@example.com?subject=SUBSCRIBE&body=Sign%20me%20up!"); //returns: //{ // scheme : "mailto", // to : ["alpha@example.com", "bravo@example.com"], // subject : "SUBSCRIBE", // body : "Sign me up!" //} URI.serialize({ scheme : "mailto", to : ["alpha@example.com"], subject : "REMOVE", body : "Please remove me", headers : { cc : "charlie@example.com" } }) === "mailto:alpha@example.com?cc=charlie@example.com&subject=REMOVE&body=Please%20remove%20me" ### URN Support URI.parse("urn:example:foo"); //returns: //{ // scheme : "urn", // nid : "example", // nss : "foo", //} #### URN UUID Support URI.parse("urn:uuid:f81d4fae-7dec-11d0-a765-00a0c91e6bf6"); //returns: //{ // scheme : "urn", // nid : "uuid", // uuid : "f81d4fae-7dec-11d0-a765-00a0c91e6bf6", //} ## Usage To load in a browser, use the following tag: <script type="text/javascript" src="uri-js/dist/es5/uri.all.min.js"></script> To load in a CommonJS/Module environment, first install with npm/yarn by running on the command line: npm install uri-js # OR yarn add uri-js Then, in your code, load it using: const URI = require("uri-js"); If you are writing your code in ES6+ (ESNEXT) or TypeScript, you would load it using: import * as URI from "uri-js"; Or you can load just what you need using named exports: import { parse, serialize, resolve, resolveComponents, normalize, equal, removeDotSegments, pctEncChar, pctDecChars, escapeComponent, unescapeComponent } from "uri-js"; ## Breaking changes ### Breaking changes from 3.x URN parsing has been completely changed to better align with the specification. Scheme is now always `urn`, but has two new properties: `nid` which contains the Namspace Identifier, and `nss` which contains the Namespace Specific String. The `nss` property will be removed by higher order scheme handlers, such as the UUID URN scheme handler. The UUID of a URN can now be found in the `uuid` property. ### Breaking changes from 2.x URI validation has been removed as it was slow, exposed a vulnerabilty, and was generally not useful. ### Breaking changes from 1.x The `errors` array on parsed components is now an `error` string. # eslint-visitor-keys [](https://www.npmjs.com/package/eslint-visitor-keys) [](http://www.npmtrends.com/eslint-visitor-keys) [](https://travis-ci.org/eslint/eslint-visitor-keys) [](https://david-dm.org/eslint/eslint-visitor-keys) Constants and utilities about visitor keys to traverse AST. ## 💿 Installation Use [npm] to install. ```bash $ npm install eslint-visitor-keys ``` ### Requirements - [Node.js] 4.0.0 or later. ## 📖 Usage ```js const evk = require("eslint-visitor-keys") ``` ### evk.KEYS > type: `{ [type: string]: string[] | undefined }` Visitor keys. This keys are frozen. This is an object. Keys are the type of [ESTree] nodes. Their values are an array of property names which have child nodes. For example: ``` console.log(evk.KEYS.AssignmentExpression) // → ["left", "right"] ``` ### evk.getKeys(node) > type: `(node: object) => string[]` Get the visitor keys of a given AST node. This is similar to `Object.keys(node)` of ES Standard, but some keys are excluded: `parent`, `leadingComments`, `trailingComments`, and names which start with `_`. This will be used to traverse unknown nodes. For example: ``` const node = { type: "AssignmentExpression", left: { type: "Identifier", name: "foo" }, right: { type: "Literal", value: 0 } } console.log(evk.getKeys(node)) // → ["type", "left", "right"] ``` ### evk.unionWith(additionalKeys) > type: `(additionalKeys: object) => { [type: string]: string[] | undefined }` Make the union set with `evk.KEYS` and the given keys. - The order of keys is, `additionalKeys` is at first, then `evk.KEYS` is concatenated after that. - It removes duplicated keys as keeping the first one. For example: ``` console.log(evk.unionWith({ MethodDefinition: ["decorators"] })) // → { ..., MethodDefinition: ["decorators", "key", "value"], ... } ``` ## 📰 Change log See [GitHub releases](https://github.com/eslint/eslint-visitor-keys/releases). ## 🍻 Contributing Welcome. See [ESLint contribution guidelines](https://eslint.org/docs/developer-guide/contributing/). ### Development commands - `npm test` runs tests and measures code coverage. - `npm run lint` checks source codes with ESLint. - `npm run coverage` opens the code coverage report of the previous test with your default browser. - `npm run release` publishes this package to [npm] registory. [npm]: https://www.npmjs.com/ [Node.js]: https://nodejs.org/en/ [ESTree]: https://github.com/estree/estree # lru cache A cache object that deletes the least-recently-used items. [](https://travis-ci.org/isaacs/node-lru-cache) [](https://coveralls.io/github/isaacs/node-lru-cache) ## Installation: ```javascript npm install lru-cache --save ``` ## Usage: ```javascript var LRU = require("lru-cache") , options = { max: 500 , length: function (n, key) { return n * 2 + key.length } , dispose: function (key, n) { n.close() } , maxAge: 1000 * 60 * 60 } , cache = new LRU(options) , otherCache = new LRU(50) // sets just the max size cache.set("key", "value") cache.get("key") // "value" // non-string keys ARE fully supported // but note that it must be THE SAME object, not // just a JSON-equivalent object. var someObject = { a: 1 } cache.set(someObject, 'a value') // Object keys are not toString()-ed cache.set('[object Object]', 'a different value') assert.equal(cache.get(someObject), 'a value') // A similar object with same keys/values won't work, // because it's a different object identity assert.equal(cache.get({ a: 1 }), undefined) cache.reset() // empty the cache ``` If you put more stuff in it, then items will fall out. If you try to put an oversized thing in it, then it'll fall out right away. ## Options * `max` The maximum size of the cache, checked by applying the length function to all values in the cache. Not setting this is kind of silly, since that's the whole purpose of this lib, but it defaults to `Infinity`. Setting it to a non-number or negative number will throw a `TypeError`. Setting it to 0 makes it be `Infinity`. * `maxAge` Maximum age in ms. Items are not pro-actively pruned out as they age, but if you try to get an item that is too old, it'll drop it and return undefined instead of giving it to you. Setting this to a negative value will make everything seem old! Setting it to a non-number will throw a `TypeError`. * `length` Function that is used to calculate the length of stored items. If you're storing strings or buffers, then you probably want to do something like `function(n, key){return n.length}`. The default is `function(){return 1}`, which is fine if you want to store `max` like-sized things. The item is passed as the first argument, and the key is passed as the second argumnet. * `dispose` Function that is called on items when they are dropped from the cache. This can be handy if you want to close file descriptors or do other cleanup tasks when items are no longer accessible. Called with `key, value`. It's called *before* actually removing the item from the internal cache, so if you want to immediately put it back in, you'll have to do that in a `nextTick` or `setTimeout` callback or it won't do anything. * `stale` By default, if you set a `maxAge`, it'll only actually pull stale items out of the cache when you `get(key)`. (That is, it's not pre-emptively doing a `setTimeout` or anything.) If you set `stale:true`, it'll return the stale value before deleting it. If you don't set this, then it'll return `undefined` when you try to get a stale entry, as if it had already been deleted. * `noDisposeOnSet` By default, if you set a `dispose()` method, then it'll be called whenever a `set()` operation overwrites an existing key. If you set this option, `dispose()` will only be called when a key falls out of the cache, not when it is overwritten. * `updateAgeOnGet` When using time-expiring entries with `maxAge`, setting this to `true` will make each item's effective time update to the current time whenever it is retrieved from cache, causing it to not expire. (It can still fall out of cache based on recency of use, of course.) ## API * `set(key, value, maxAge)` * `get(key) => value` Both of these will update the "recently used"-ness of the key. They do what you think. `maxAge` is optional and overrides the cache `maxAge` option if provided. If the key is not found, `get()` will return `undefined`. The key and val can be any value. * `peek(key)` Returns the key value (or `undefined` if not found) without updating the "recently used"-ness of the key. (If you find yourself using this a lot, you *might* be using the wrong sort of data structure, but there are some use cases where it's handy.) * `del(key)` Deletes a key out of the cache. * `reset()` Clear the cache entirely, throwing away all values. * `has(key)` Check if a key is in the cache, without updating the recent-ness or deleting it for being stale. * `forEach(function(value,key,cache), [thisp])` Just like `Array.prototype.forEach`. Iterates over all the keys in the cache, in order of recent-ness. (Ie, more recently used items are iterated over first.) * `rforEach(function(value,key,cache), [thisp])` The same as `cache.forEach(...)` but items are iterated over in reverse order. (ie, less recently used items are iterated over first.) * `keys()` Return an array of the keys in the cache. * `values()` Return an array of the values in the cache. * `length` Return total length of objects in cache taking into account `length` options function. * `itemCount` Return total quantity of objects currently in cache. Note, that `stale` (see options) items are returned as part of this item count. * `dump()` Return an array of the cache entries ready for serialization and usage with 'destinationCache.load(arr)`. * `load(cacheEntriesArray)` Loads another cache entries array, obtained with `sourceCache.dump()`, into the cache. The destination cache is reset before loading new entries * `prune()` Manually iterates over the entire cache proactively pruning old entries # balanced-match Match balanced string pairs, like `{` and `}` or `<b>` and `</b>`. Supports regular expressions as well! [](http://travis-ci.org/juliangruber/balanced-match) [](https://www.npmjs.org/package/balanced-match) [](https://ci.testling.com/juliangruber/balanced-match) ## Example Get the first matching pair of braces: ```js var balanced = require('balanced-match'); console.log(balanced('{', '}', 'pre{in{nested}}post')); console.log(balanced('{', '}', 'pre{first}between{second}post')); console.log(balanced(/\s+\{\s+/, /\s+\}\s+/, 'pre { in{nest} } post')); ``` The matches are: ```bash $ node example.js { start: 3, end: 14, pre: 'pre', body: 'in{nested}', post: 'post' } { start: 3, end: 9, pre: 'pre', body: 'first', post: 'between{second}post' } { start: 3, end: 17, pre: 'pre', body: 'in{nest}', post: 'post' } ``` ## API ### var m = balanced(a, b, str) For the first non-nested matching pair of `a` and `b` in `str`, return an object with those keys: * **start** the index of the first match of `a` * **end** the index of the matching `b` * **pre** the preamble, `a` and `b` not included * **body** the match, `a` and `b` not included * **post** the postscript, `a` and `b` not included If there's no match, `undefined` will be returned. If the `str` contains more `a` than `b` / there are unmatched pairs, the first match that was closed will be used. For example, `{{a}` will match `['{', 'a', '']` and `{a}}` will match `['', 'a', '}']`. ### var r = balanced.range(a, b, str) For the first non-nested matching pair of `a` and `b` in `str`, return an array with indexes: `[ <a index>, <b index> ]`. If there's no match, `undefined` will be returned. If the `str` contains more `a` than `b` / there are unmatched pairs, the first match that was closed will be used. For example, `{{a}` will match `[ 1, 3 ]` and `{a}}` will match `[0, 2]`. ## Installation With [npm](https://npmjs.org) do: ```bash npm install balanced-match ``` ## Security contact information To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. ## License (MIT) Copyright (c) 2013 Julian Gruber &lt;julian@juliangruber.com&gt; Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # safe-buffer [![travis][travis-image]][travis-url] [![npm][npm-image]][npm-url] [![downloads][downloads-image]][downloads-url] [![javascript style guide][standard-image]][standard-url] [travis-image]: https://img.shields.io/travis/feross/safe-buffer/master.svg [travis-url]: https://travis-ci.org/feross/safe-buffer [npm-image]: https://img.shields.io/npm/v/safe-buffer.svg [npm-url]: https://npmjs.org/package/safe-buffer [downloads-image]: https://img.shields.io/npm/dm/safe-buffer.svg [downloads-url]: https://npmjs.org/package/safe-buffer [standard-image]: https://img.shields.io/badge/code_style-standard-brightgreen.svg [standard-url]: https://standardjs.com #### Safer Node.js Buffer API **Use the new Node.js Buffer APIs (`Buffer.from`, `Buffer.alloc`, `Buffer.allocUnsafe`, `Buffer.allocUnsafeSlow`) in all versions of Node.js.** **Uses the built-in implementation when available.** ## install ``` npm install safe-buffer ``` ## usage The goal of this package is to provide a safe replacement for the node.js `Buffer`. It's a drop-in replacement for `Buffer`. You can use it by adding one `require` line to the top of your node.js modules: ```js var Buffer = require('safe-buffer').Buffer // Existing buffer code will continue to work without issues: new Buffer('hey', 'utf8') new Buffer([1, 2, 3], 'utf8') new Buffer(obj) new Buffer(16) // create an uninitialized buffer (potentially unsafe) // But you can use these new explicit APIs to make clear what you want: Buffer.from('hey', 'utf8') // convert from many types to a Buffer Buffer.alloc(16) // create a zero-filled buffer (safe) Buffer.allocUnsafe(16) // create an uninitialized buffer (potentially unsafe) ``` ## api ### Class Method: Buffer.from(array) <!-- YAML added: v3.0.0 --> * `array` {Array} Allocates a new `Buffer` using an `array` of octets. ```js const buf = Buffer.from([0x62,0x75,0x66,0x66,0x65,0x72]); // creates a new Buffer containing ASCII bytes // ['b','u','f','f','e','r'] ``` A `TypeError` will be thrown if `array` is not an `Array`. ### Class Method: Buffer.from(arrayBuffer[, byteOffset[, length]]) <!-- YAML added: v5.10.0 --> * `arrayBuffer` {ArrayBuffer} The `.buffer` property of a `TypedArray` or a `new ArrayBuffer()` * `byteOffset` {Number} Default: `0` * `length` {Number} Default: `arrayBuffer.length - byteOffset` When passed a reference to the `.buffer` property of a `TypedArray` instance, the newly created `Buffer` will share the same allocated memory as the TypedArray. ```js const arr = new Uint16Array(2); arr[0] = 5000; arr[1] = 4000; const buf = Buffer.from(arr.buffer); // shares the memory with arr; console.log(buf); // Prints: <Buffer 88 13 a0 0f> // changing the TypedArray changes the Buffer also arr[1] = 6000; console.log(buf); // Prints: <Buffer 88 13 70 17> ``` The optional `byteOffset` and `length` arguments specify a memory range within the `arrayBuffer` that will be shared by the `Buffer`. ```js const ab = new ArrayBuffer(10); const buf = Buffer.from(ab, 0, 2); console.log(buf.length); // Prints: 2 ``` A `TypeError` will be thrown if `arrayBuffer` is not an `ArrayBuffer`. ### Class Method: Buffer.from(buffer) <!-- YAML added: v3.0.0 --> * `buffer` {Buffer} Copies the passed `buffer` data onto a new `Buffer` instance. ```js const buf1 = Buffer.from('buffer'); const buf2 = Buffer.from(buf1); buf1[0] = 0x61; console.log(buf1.toString()); // 'auffer' console.log(buf2.toString()); // 'buffer' (copy is not changed) ``` A `TypeError` will be thrown if `buffer` is not a `Buffer`. ### Class Method: Buffer.from(str[, encoding]) <!-- YAML added: v5.10.0 --> * `str` {String} String to encode. * `encoding` {String} Encoding to use, Default: `'utf8'` Creates a new `Buffer` containing the given JavaScript string `str`. If provided, the `encoding` parameter identifies the character encoding. If not provided, `encoding` defaults to `'utf8'`. ```js const buf1 = Buffer.from('this is a tést'); console.log(buf1.toString()); // prints: this is a tést console.log(buf1.toString('ascii')); // prints: this is a tC)st const buf2 = Buffer.from('7468697320697320612074c3a97374', 'hex'); console.log(buf2.toString()); // prints: this is a tést ``` A `TypeError` will be thrown if `str` is not a string. ### Class Method: Buffer.alloc(size[, fill[, encoding]]) <!-- YAML added: v5.10.0 --> * `size` {Number} * `fill` {Value} Default: `undefined` * `encoding` {String} Default: `utf8` Allocates a new `Buffer` of `size` bytes. If `fill` is `undefined`, the `Buffer` will be *zero-filled*. ```js const buf = Buffer.alloc(5); console.log(buf); // <Buffer 00 00 00 00 00> ``` The `size` must be less than or equal to the value of `require('buffer').kMaxLength` (on 64-bit architectures, `kMaxLength` is `(2^31)-1`). Otherwise, a [`RangeError`][] is thrown. A zero-length Buffer will be created if a `size` less than or equal to 0 is specified. If `fill` is specified, the allocated `Buffer` will be initialized by calling `buf.fill(fill)`. See [`buf.fill()`][] for more information. ```js const buf = Buffer.alloc(5, 'a'); console.log(buf); // <Buffer 61 61 61 61 61> ``` If both `fill` and `encoding` are specified, the allocated `Buffer` will be initialized by calling `buf.fill(fill, encoding)`. For example: ```js const buf = Buffer.alloc(11, 'aGVsbG8gd29ybGQ=', 'base64'); console.log(buf); // <Buffer 68 65 6c 6c 6f 20 77 6f 72 6c 64> ``` Calling `Buffer.alloc(size)` can be significantly slower than the alternative `Buffer.allocUnsafe(size)` but ensures that the newly created `Buffer` instance contents will *never contain sensitive data*. A `TypeError` will be thrown if `size` is not a number. ### Class Method: Buffer.allocUnsafe(size) <!-- YAML added: v5.10.0 --> * `size` {Number} Allocates a new *non-zero-filled* `Buffer` of `size` bytes. The `size` must be less than or equal to the value of `require('buffer').kMaxLength` (on 64-bit architectures, `kMaxLength` is `(2^31)-1`). Otherwise, a [`RangeError`][] is thrown. A zero-length Buffer will be created if a `size` less than or equal to 0 is specified. The underlying memory for `Buffer` instances created in this way is *not initialized*. The contents of the newly created `Buffer` are unknown and *may contain sensitive data*. Use [`buf.fill(0)`][] to initialize such `Buffer` instances to zeroes. ```js const buf = Buffer.allocUnsafe(5); console.log(buf); // <Buffer 78 e0 82 02 01> // (octets will be different, every time) buf.fill(0); console.log(buf); // <Buffer 00 00 00 00 00> ``` A `TypeError` will be thrown if `size` is not a number. Note that the `Buffer` module pre-allocates an internal `Buffer` instance of size `Buffer.poolSize` that is used as a pool for the fast allocation of new `Buffer` instances created using `Buffer.allocUnsafe(size)` (and the deprecated `new Buffer(size)` constructor) only when `size` is less than or equal to `Buffer.poolSize >> 1` (floor of `Buffer.poolSize` divided by two). The default value of `Buffer.poolSize` is `8192` but can be modified. Use of this pre-allocated internal memory pool is a key difference between calling `Buffer.alloc(size, fill)` vs. `Buffer.allocUnsafe(size).fill(fill)`. Specifically, `Buffer.alloc(size, fill)` will *never* use the internal Buffer pool, while `Buffer.allocUnsafe(size).fill(fill)` *will* use the internal Buffer pool if `size` is less than or equal to half `Buffer.poolSize`. The difference is subtle but can be important when an application requires the additional performance that `Buffer.allocUnsafe(size)` provides. ### Class Method: Buffer.allocUnsafeSlow(size) <!-- YAML added: v5.10.0 --> * `size` {Number} Allocates a new *non-zero-filled* and non-pooled `Buffer` of `size` bytes. The `size` must be less than or equal to the value of `require('buffer').kMaxLength` (on 64-bit architectures, `kMaxLength` is `(2^31)-1`). Otherwise, a [`RangeError`][] is thrown. A zero-length Buffer will be created if a `size` less than or equal to 0 is specified. The underlying memory for `Buffer` instances created in this way is *not initialized*. The contents of the newly created `Buffer` are unknown and *may contain sensitive data*. Use [`buf.fill(0)`][] to initialize such `Buffer` instances to zeroes. When using `Buffer.allocUnsafe()` to allocate new `Buffer` instances, allocations under 4KB are, by default, sliced from a single pre-allocated `Buffer`. This allows applications to avoid the garbage collection overhead of creating many individually allocated Buffers. This approach improves both performance and memory usage by eliminating the need to track and cleanup as many `Persistent` objects. However, in the case where a developer may need to retain a small chunk of memory from a pool for an indeterminate amount of time, it may be appropriate to create an un-pooled Buffer instance using `Buffer.allocUnsafeSlow()` then copy out the relevant bits. ```js // need to keep around a few small chunks of memory const store = []; socket.on('readable', () => { const data = socket.read(); // allocate for retained data const sb = Buffer.allocUnsafeSlow(10); // copy the data into the new allocation data.copy(sb, 0, 0, 10); store.push(sb); }); ``` Use of `Buffer.allocUnsafeSlow()` should be used only as a last resort *after* a developer has observed undue memory retention in their applications. A `TypeError` will be thrown if `size` is not a number. ### All the Rest The rest of the `Buffer` API is exactly the same as in node.js. [See the docs](https://nodejs.org/api/buffer.html). ## Related links - [Node.js issue: Buffer(number) is unsafe](https://github.com/nodejs/node/issues/4660) - [Node.js Enhancement Proposal: Buffer.from/Buffer.alloc/Buffer.zalloc/Buffer() soft-deprecate](https://github.com/nodejs/node-eps/pull/4) ## Why is `Buffer` unsafe? Today, the node.js `Buffer` constructor is overloaded to handle many different argument types like `String`, `Array`, `Object`, `TypedArrayView` (`Uint8Array`, etc.), `ArrayBuffer`, and also `Number`. The API is optimized for convenience: you can throw any type at it, and it will try to do what you want. Because the Buffer constructor is so powerful, you often see code like this: ```js // Convert UTF-8 strings to hex function toHex (str) { return new Buffer(str).toString('hex') } ``` ***But what happens if `toHex` is called with a `Number` argument?*** ### Remote Memory Disclosure If an attacker can make your program call the `Buffer` constructor with a `Number` argument, then they can make it allocate uninitialized memory from the node.js process. This could potentially disclose TLS private keys, user data, or database passwords. When the `Buffer` constructor is passed a `Number` argument, it returns an **UNINITIALIZED** block of memory of the specified `size`. When you create a `Buffer` like this, you **MUST** overwrite the contents before returning it to the user. From the [node.js docs](https://nodejs.org/api/buffer.html#buffer_new_buffer_size): > `new Buffer(size)` > > - `size` Number > > The underlying memory for `Buffer` instances created in this way is not initialized. > **The contents of a newly created `Buffer` are unknown and could contain sensitive > data.** Use `buf.fill(0)` to initialize a Buffer to zeroes. (Emphasis our own.) Whenever the programmer intended to create an uninitialized `Buffer` you often see code like this: ```js var buf = new Buffer(16) // Immediately overwrite the uninitialized buffer with data from another buffer for (var i = 0; i < buf.length; i++) { buf[i] = otherBuf[i] } ``` ### Would this ever be a problem in real code? Yes. It's surprisingly common to forget to check the type of your variables in a dynamically-typed language like JavaScript. Usually the consequences of assuming the wrong type is that your program crashes with an uncaught exception. But the failure mode for forgetting to check the type of arguments to the `Buffer` constructor is more catastrophic. Here's an example of a vulnerable service that takes a JSON payload and converts it to hex: ```js // Take a JSON payload {str: "some string"} and convert it to hex var server = http.createServer(function (req, res) { var data = '' req.setEncoding('utf8') req.on('data', function (chunk) { data += chunk }) req.on('end', function () { var body = JSON.parse(data) res.end(new Buffer(body.str).toString('hex')) }) }) server.listen(8080) ``` In this example, an http client just has to send: ```json { "str": 1000 } ``` and it will get back 1,000 bytes of uninitialized memory from the server. This is a very serious bug. It's similar in severity to the [the Heartbleed bug](http://heartbleed.com/) that allowed disclosure of OpenSSL process memory by remote attackers. ### Which real-world packages were vulnerable? #### [`bittorrent-dht`](https://www.npmjs.com/package/bittorrent-dht) [Mathias Buus](https://github.com/mafintosh) and I ([Feross Aboukhadijeh](http://feross.org/)) found this issue in one of our own packages, [`bittorrent-dht`](https://www.npmjs.com/package/bittorrent-dht). The bug would allow anyone on the internet to send a series of messages to a user of `bittorrent-dht` and get them to reveal 20 bytes at a time of uninitialized memory from the node.js process. Here's [the commit](https://github.com/feross/bittorrent-dht/commit/6c7da04025d5633699800a99ec3fbadf70ad35b8) that fixed it. We released a new fixed version, created a [Node Security Project disclosure](https://nodesecurity.io/advisories/68), and deprecated all vulnerable versions on npm so users will get a warning to upgrade to a newer version. #### [`ws`](https://www.npmjs.com/package/ws) That got us wondering if there were other vulnerable packages. Sure enough, within a short period of time, we found the same issue in [`ws`](https://www.npmjs.com/package/ws), the most popular WebSocket implementation in node.js. If certain APIs were called with `Number` parameters instead of `String` or `Buffer` as expected, then uninitialized server memory would be disclosed to the remote peer. These were the vulnerable methods: ```js socket.send(number) socket.ping(number) socket.pong(number) ``` Here's a vulnerable socket server with some echo functionality: ```js server.on('connection', function (socket) { socket.on('message', function (message) { message = JSON.parse(message) if (message.type === 'echo') { socket.send(message.data) // send back the user's message } }) }) ``` `socket.send(number)` called on the server, will disclose server memory. Here's [the release](https://github.com/websockets/ws/releases/tag/1.0.1) where the issue was fixed, with a more detailed explanation. Props to [Arnout Kazemier](https://github.com/3rd-Eden) for the quick fix. Here's the [Node Security Project disclosure](https://nodesecurity.io/advisories/67). ### What's the solution? It's important that node.js offers a fast way to get memory otherwise performance-critical applications would needlessly get a lot slower. But we need a better way to *signal our intent* as programmers. **When we want uninitialized memory, we should request it explicitly.** Sensitive functionality should not be packed into a developer-friendly API that loosely accepts many different types. This type of API encourages the lazy practice of passing variables in without checking the type very carefully. #### A new API: `Buffer.allocUnsafe(number)` The functionality of creating buffers with uninitialized memory should be part of another API. We propose `Buffer.allocUnsafe(number)`. This way, it's not part of an API that frequently gets user input of all sorts of different types passed into it. ```js var buf = Buffer.allocUnsafe(16) // careful, uninitialized memory! // Immediately overwrite the uninitialized buffer with data from another buffer for (var i = 0; i < buf.length; i++) { buf[i] = otherBuf[i] } ``` ### How do we fix node.js core? We sent [a PR to node.js core](https://github.com/nodejs/node/pull/4514) (merged as `semver-major`) which defends against one case: ```js var str = 16 new Buffer(str, 'utf8') ``` In this situation, it's implied that the programmer intended the first argument to be a string, since they passed an encoding as a second argument. Today, node.js will allocate uninitialized memory in the case of `new Buffer(number, encoding)`, which is probably not what the programmer intended. But this is only a partial solution, since if the programmer does `new Buffer(variable)` (without an `encoding` parameter) there's no way to know what they intended. If `variable` is sometimes a number, then uninitialized memory will sometimes be returned. ### What's the real long-term fix? We could deprecate and remove `new Buffer(number)` and use `Buffer.allocUnsafe(number)` when we need uninitialized memory. But that would break 1000s of packages. ~~We believe the best solution is to:~~ ~~1. Change `new Buffer(number)` to return safe, zeroed-out memory~~ ~~2. Create a new API for creating uninitialized Buffers. We propose: `Buffer.allocUnsafe(number)`~~ #### Update We now support adding three new APIs: - `Buffer.from(value)` - convert from any type to a buffer - `Buffer.alloc(size)` - create a zero-filled buffer - `Buffer.allocUnsafe(size)` - create an uninitialized buffer with given size This solves the core problem that affected `ws` and `bittorrent-dht` which is `Buffer(variable)` getting tricked into taking a number argument. This way, existing code continues working and the impact on the npm ecosystem will be minimal. Over time, npm maintainers can migrate performance-critical code to use `Buffer.allocUnsafe(number)` instead of `new Buffer(number)`. ### Conclusion We think there's a serious design issue with the `Buffer` API as it exists today. It promotes insecure software by putting high-risk functionality into a convenient API with friendly "developer ergonomics". This wasn't merely a theoretical exercise because we found the issue in some of the most popular npm packages. Fortunately, there's an easy fix that can be applied today. Use `safe-buffer` in place of `buffer`. ```js var Buffer = require('safe-buffer').Buffer ``` Eventually, we hope that node.js core can switch to this new, safer behavior. We believe the impact on the ecosystem would be minimal since it's not a breaking change. Well-maintained, popular packages would be updated to use `Buffer.alloc` quickly, while older, insecure packages would magically become safe from this attack vector. ## links - [Node.js PR: buffer: throw if both length and enc are passed](https://github.com/nodejs/node/pull/4514) - [Node Security Project disclosure for `ws`](https://nodesecurity.io/advisories/67) - [Node Security Project disclosure for`bittorrent-dht`](https://nodesecurity.io/advisories/68) ## credit The original issues in `bittorrent-dht` ([disclosure](https://nodesecurity.io/advisories/68)) and `ws` ([disclosure](https://nodesecurity.io/advisories/67)) were discovered by [Mathias Buus](https://github.com/mafintosh) and [Feross Aboukhadijeh](http://feross.org/). Thanks to [Adam Baldwin](https://github.com/evilpacket) for helping disclose these issues and for his work running the [Node Security Project](https://nodesecurity.io/). Thanks to [John Hiesey](https://github.com/jhiesey) for proofreading this README and auditing the code. ## license MIT. Copyright (C) [Feross Aboukhadijeh](http://feross.org) # minipass A _very_ minimal implementation of a [PassThrough stream](https://nodejs.org/api/stream.html#stream_class_stream_passthrough) [It's very fast](https://docs.google.com/spreadsheets/d/1oObKSrVwLX_7Ut4Z6g3fZW-AX1j1-k6w-cDsrkaSbHM/edit#gid=0) for objects, strings, and buffers. Supports `pipe()`ing (including multi-`pipe()` and backpressure transmission), buffering data until either a `data` event handler or `pipe()` is added (so you don't lose the first chunk), and most other cases where PassThrough is a good idea. There is a `read()` method, but it's much more efficient to consume data from this stream via `'data'` events or by calling `pipe()` into some other stream. Calling `read()` requires the buffer to be flattened in some cases, which requires copying memory. There is also no `unpipe()` method. Once you start piping, there is no stopping it! If you set `objectMode: true` in the options, then whatever is written will be emitted. Otherwise, it'll do a minimal amount of Buffer copying to ensure proper Streams semantics when `read(n)` is called. `objectMode` can also be set by doing `stream.objectMode = true`, or by writing any non-string/non-buffer data. `objectMode` cannot be set to false once it is set. This is not a `through` or `through2` stream. It doesn't transform the data, it just passes it right through. If you want to transform the data, extend the class, and override the `write()` method. Once you're done transforming the data however you want, call `super.write()` with the transform output. For some examples of streams that extend Minipass in various ways, check out: - [minizlib](http://npm.im/minizlib) - [fs-minipass](http://npm.im/fs-minipass) - [tar](http://npm.im/tar) - [minipass-collect](http://npm.im/minipass-collect) - [minipass-flush](http://npm.im/minipass-flush) - [minipass-pipeline](http://npm.im/minipass-pipeline) - [tap](http://npm.im/tap) - [tap-parser](http://npm.im/tap-parser) - [treport](http://npm.im/treport) - [minipass-fetch](http://npm.im/minipass-fetch) - [pacote](http://npm.im/pacote) - [make-fetch-happen](http://npm.im/make-fetch-happen) - [cacache](http://npm.im/cacache) - [ssri](http://npm.im/ssri) - [npm-registry-fetch](http://npm.im/npm-registry-fetch) - [minipass-json-stream](http://npm.im/minipass-json-stream) - [minipass-sized](http://npm.im/minipass-sized) ## Differences from Node.js Streams There are several things that make Minipass streams different from (and in some ways superior to) Node.js core streams. Please read these caveats if you are familiar with node-core streams and intend to use Minipass streams in your programs. ### Timing Minipass streams are designed to support synchronous use-cases. Thus, data is emitted as soon as it is available, always. It is buffered until read, but no longer. Another way to look at it is that Minipass streams are exactly as synchronous as the logic that writes into them. This can be surprising if your code relies on `PassThrough.write()` always providing data on the next tick rather than the current one, or being able to call `resume()` and not have the entire buffer disappear immediately. However, without this synchronicity guarantee, there would be no way for Minipass to achieve the speeds it does, or support the synchronous use cases that it does. Simply put, waiting takes time. This non-deferring approach makes Minipass streams much easier to reason about, especially in the context of Promises and other flow-control mechanisms. ### No High/Low Water Marks Node.js core streams will optimistically fill up a buffer, returning `true` on all writes until the limit is hit, even if the data has nowhere to go. Then, they will not attempt to draw more data in until the buffer size dips below a minimum value. Minipass streams are much simpler. The `write()` method will return `true` if the data has somewhere to go (which is to say, given the timing guarantees, that the data is already there by the time `write()` returns). If the data has nowhere to go, then `write()` returns false, and the data sits in a buffer, to be drained out immediately as soon as anyone consumes it. ### Hazards of Buffering (or: Why Minipass Is So Fast) Since data written to a Minipass stream is immediately written all the way through the pipeline, and `write()` always returns true/false based on whether the data was fully flushed, backpressure is communicated immediately to the upstream caller. This minimizes buffering. Consider this case: ```js const {PassThrough} = require('stream') const p1 = new PassThrough({ highWaterMark: 1024 }) const p2 = new PassThrough({ highWaterMark: 1024 }) const p3 = new PassThrough({ highWaterMark: 1024 }) const p4 = new PassThrough({ highWaterMark: 1024 }) p1.pipe(p2).pipe(p3).pipe(p4) p4.on('data', () => console.log('made it through')) // this returns false and buffers, then writes to p2 on next tick (1) // p2 returns false and buffers, pausing p1, then writes to p3 on next tick (2) // p3 returns false and buffers, pausing p2, then writes to p4 on next tick (3) // p4 returns false and buffers, pausing p3, then emits 'data' and 'drain' // on next tick (4) // p3 sees p4's 'drain' event, and calls resume(), emitting 'resume' and // 'drain' on next tick (5) // p2 sees p3's 'drain', calls resume(), emits 'resume' and 'drain' on next tick (6) // p1 sees p2's 'drain', calls resume(), emits 'resume' and 'drain' on next // tick (7) p1.write(Buffer.alloc(2048)) // returns false ``` Along the way, the data was buffered and deferred at each stage, and multiple event deferrals happened, for an unblocked pipeline where it was perfectly safe to write all the way through! Furthermore, setting a `highWaterMark` of `1024` might lead someone reading the code to think an advisory maximum of 1KiB is being set for the pipeline. However, the actual advisory buffering level is the _sum_ of `highWaterMark` values, since each one has its own bucket. Consider the Minipass case: ```js const m1 = new Minipass() const m2 = new Minipass() const m3 = new Minipass() const m4 = new Minipass() m1.pipe(m2).pipe(m3).pipe(m4) m4.on('data', () => console.log('made it through')) // m1 is flowing, so it writes the data to m2 immediately // m2 is flowing, so it writes the data to m3 immediately // m3 is flowing, so it writes the data to m4 immediately // m4 is flowing, so it fires the 'data' event immediately, returns true // m4's write returned true, so m3 is still flowing, returns true // m3's write returned true, so m2 is still flowing, returns true // m2's write returned true, so m1 is still flowing, returns true // No event deferrals or buffering along the way! m1.write(Buffer.alloc(2048)) // returns true ``` It is extremely unlikely that you _don't_ want to buffer any data written, or _ever_ buffer data that can be flushed all the way through. Neither node-core streams nor Minipass ever fail to buffer written data, but node-core streams do a lot of unnecessary buffering and pausing. As always, the faster implementation is the one that does less stuff and waits less time to do it. ### Immediately emit `end` for empty streams (when not paused) If a stream is not paused, and `end()` is called before writing any data into it, then it will emit `end` immediately. If you have logic that occurs on the `end` event which you don't want to potentially happen immediately (for example, closing file descriptors, moving on to the next entry in an archive parse stream, etc.) then be sure to call `stream.pause()` on creation, and then `stream.resume()` once you are ready to respond to the `end` event. ### Emit `end` When Asked One hazard of immediately emitting `'end'` is that you may not yet have had a chance to add a listener. In order to avoid this hazard, Minipass streams safely re-emit the `'end'` event if a new listener is added after `'end'` has been emitted. Ie, if you do `stream.on('end', someFunction)`, and the stream has already emitted `end`, then it will call the handler right away. (You can think of this somewhat like attaching a new `.then(fn)` to a previously-resolved Promise.) To prevent calling handlers multiple times who would not expect multiple ends to occur, all listeners are removed from the `'end'` event whenever it is emitted. ### Impact of "immediate flow" on Tee-streams A "tee stream" is a stream piping to multiple destinations: ```js const tee = new Minipass() t.pipe(dest1) t.pipe(dest2) t.write('foo') // goes to both destinations ``` Since Minipass streams _immediately_ process any pending data through the pipeline when a new pipe destination is added, this can have surprising effects, especially when a stream comes in from some other function and may or may not have data in its buffer. ```js // WARNING! WILL LOSE DATA! const src = new Minipass() src.write('foo') src.pipe(dest1) // 'foo' chunk flows to dest1 immediately, and is gone src.pipe(dest2) // gets nothing! ``` The solution is to create a dedicated tee-stream junction that pipes to both locations, and then pipe to _that_ instead. ```js // Safe example: tee to both places const src = new Minipass() src.write('foo') const tee = new Minipass() tee.pipe(dest1) tee.pipe(dest2) src.pipe(tee) // tee gets 'foo', pipes to both locations ``` The same caveat applies to `on('data')` event listeners. The first one added will _immediately_ receive all of the data, leaving nothing for the second: ```js // WARNING! WILL LOSE DATA! const src = new Minipass() src.write('foo') src.on('data', handler1) // receives 'foo' right away src.on('data', handler2) // nothing to see here! ``` Using a dedicated tee-stream can be used in this case as well: ```js // Safe example: tee to both data handlers const src = new Minipass() src.write('foo') const tee = new Minipass() tee.on('data', handler1) tee.on('data', handler2) src.pipe(tee) ``` ## USAGE It's a stream! Use it like a stream and it'll most likely do what you want. ```js const Minipass = require('minipass') const mp = new Minipass(options) // optional: { encoding, objectMode } mp.write('foo') mp.pipe(someOtherStream) mp.end('bar') ``` ### OPTIONS * `encoding` How would you like the data coming _out_ of the stream to be encoded? Accepts any values that can be passed to `Buffer.toString()`. * `objectMode` Emit data exactly as it comes in. This will be flipped on by default if you write() something other than a string or Buffer at any point. Setting `objectMode: true` will prevent setting any encoding value. ### API Implements the user-facing portions of Node.js's `Readable` and `Writable` streams. ### Methods * `write(chunk, [encoding], [callback])` - Put data in. (Note that, in the base Minipass class, the same data will come out.) Returns `false` if the stream will buffer the next write, or true if it's still in "flowing" mode. * `end([chunk, [encoding]], [callback])` - Signal that you have no more data to write. This will queue an `end` event to be fired when all the data has been consumed. * `setEncoding(encoding)` - Set the encoding for data coming of the stream. This can only be done once. * `pause()` - No more data for a while, please. This also prevents `end` from being emitted for empty streams until the stream is resumed. * `resume()` - Resume the stream. If there's data in the buffer, it is all discarded. Any buffered events are immediately emitted. * `pipe(dest)` - Send all output to the stream provided. There is no way to unpipe. When data is emitted, it is immediately written to any and all pipe destinations. * `on(ev, fn)`, `emit(ev, fn)` - Minipass streams are EventEmitters. Some events are given special treatment, however. (See below under "events".) * `promise()` - Returns a Promise that resolves when the stream emits `end`, or rejects if the stream emits `error`. * `collect()` - Return a Promise that resolves on `end` with an array containing each chunk of data that was emitted, or rejects if the stream emits `error`. Note that this consumes the stream data. * `concat()` - Same as `collect()`, but concatenates the data into a single Buffer object. Will reject the returned promise if the stream is in objectMode, or if it goes into objectMode by the end of the data. * `read(n)` - Consume `n` bytes of data out of the buffer. If `n` is not provided, then consume all of it. If `n` bytes are not available, then it returns null. **Note** consuming streams in this way is less efficient, and can lead to unnecessary Buffer copying. * `destroy([er])` - Destroy the stream. If an error is provided, then an `'error'` event is emitted. If the stream has a `close()` method, and has not emitted a `'close'` event yet, then `stream.close()` will be called. Any Promises returned by `.promise()`, `.collect()` or `.concat()` will be rejected. After being destroyed, writing to the stream will emit an error. No more data will be emitted if the stream is destroyed, even if it was previously buffered. ### Properties * `bufferLength` Read-only. Total number of bytes buffered, or in the case of objectMode, the total number of objects. * `encoding` The encoding that has been set. (Setting this is equivalent to calling `setEncoding(enc)` and has the same prohibition against setting multiple times.) * `flowing` Read-only. Boolean indicating whether a chunk written to the stream will be immediately emitted. * `emittedEnd` Read-only. Boolean indicating whether the end-ish events (ie, `end`, `prefinish`, `finish`) have been emitted. Note that listening on any end-ish event will immediateyl re-emit it if it has already been emitted. * `writable` Whether the stream is writable. Default `true`. Set to `false` when `end()` * `readable` Whether the stream is readable. Default `true`. * `buffer` A [yallist](http://npm.im/yallist) linked list of chunks written to the stream that have not yet been emitted. (It's probably a bad idea to mess with this.) * `pipes` A [yallist](http://npm.im/yallist) linked list of streams that this stream is piping into. (It's probably a bad idea to mess with this.) * `destroyed` A getter that indicates whether the stream was destroyed. * `paused` True if the stream has been explicitly paused, otherwise false. * `objectMode` Indicates whether the stream is in `objectMode`. Once set to `true`, it cannot be set to `false`. ### Events * `data` Emitted when there's data to read. Argument is the data to read. This is never emitted while not flowing. If a listener is attached, that will resume the stream. * `end` Emitted when there's no more data to read. This will be emitted immediately for empty streams when `end()` is called. If a listener is attached, and `end` was already emitted, then it will be emitted again. All listeners are removed when `end` is emitted. * `prefinish` An end-ish event that follows the same logic as `end` and is emitted in the same conditions where `end` is emitted. Emitted after `'end'`. * `finish` An end-ish event that follows the same logic as `end` and is emitted in the same conditions where `end` is emitted. Emitted after `'prefinish'`. * `close` An indication that an underlying resource has been released. Minipass does not emit this event, but will defer it until after `end` has been emitted, since it throws off some stream libraries otherwise. * `drain` Emitted when the internal buffer empties, and it is again suitable to `write()` into the stream. * `readable` Emitted when data is buffered and ready to be read by a consumer. * `resume` Emitted when stream changes state from buffering to flowing mode. (Ie, when `resume` is called, `pipe` is called, or a `data` event listener is added.) ### Static Methods * `Minipass.isStream(stream)` Returns `true` if the argument is a stream, and false otherwise. To be considered a stream, the object must be either an instance of Minipass, or an EventEmitter that has either a `pipe()` method, or both `write()` and `end()` methods. (Pretty much any stream in node-land will return `true` for this.) ## EXAMPLES Here are some examples of things you can do with Minipass streams. ### simple "are you done yet" promise ```js mp.promise().then(() => { // stream is finished }, er => { // stream emitted an error }) ``` ### collecting ```js mp.collect().then(all => { // all is an array of all the data emitted // encoding is supported in this case, so // so the result will be a collection of strings if // an encoding is specified, or buffers/objects if not. // // In an async function, you may do // const data = await stream.collect() }) ``` ### collecting into a single blob This is a bit slower because it concatenates the data into one chunk for you, but if you're going to do it yourself anyway, it's convenient this way: ```js mp.concat().then(onebigchunk => { // onebigchunk is a string if the stream // had an encoding set, or a buffer otherwise. }) ``` ### iteration You can iterate over streams synchronously or asynchronously in platforms that support it. Synchronous iteration will end when the currently available data is consumed, even if the `end` event has not been reached. In string and buffer mode, the data is concatenated, so unless multiple writes are occurring in the same tick as the `read()`, sync iteration loops will generally only have a single iteration. To consume chunks in this way exactly as they have been written, with no flattening, create the stream with the `{ objectMode: true }` option. ```js const mp = new Minipass({ objectMode: true }) mp.write('a') mp.write('b') for (let letter of mp) { console.log(letter) // a, b } mp.write('c') mp.write('d') for (let letter of mp) { console.log(letter) // c, d } mp.write('e') mp.end() for (let letter of mp) { console.log(letter) // e } for (let letter of mp) { console.log(letter) // nothing } ``` Asynchronous iteration will continue until the end event is reached, consuming all of the data. ```js const mp = new Minipass({ encoding: 'utf8' }) // some source of some data let i = 5 const inter = setInterval(() => { if (i-- > 0) mp.write(Buffer.from('foo\n', 'utf8')) else { mp.end() clearInterval(inter) } }, 100) // consume the data with asynchronous iteration async function consume () { for await (let chunk of mp) { console.log(chunk) } return 'ok' } consume().then(res => console.log(res)) // logs `foo\n` 5 times, and then `ok` ``` ### subclass that `console.log()`s everything written into it ```js class Logger extends Minipass { write (chunk, encoding, callback) { console.log('WRITE', chunk, encoding) return super.write(chunk, encoding, callback) } end (chunk, encoding, callback) { console.log('END', chunk, encoding) return super.end(chunk, encoding, callback) } } someSource.pipe(new Logger()).pipe(someDest) ``` ### same thing, but using an inline anonymous class ```js // js classes are fun someSource .pipe(new (class extends Minipass { emit (ev, ...data) { // let's also log events, because debugging some weird thing console.log('EMIT', ev) return super.emit(ev, ...data) } write (chunk, encoding, callback) { console.log('WRITE', chunk, encoding) return super.write(chunk, encoding, callback) } end (chunk, encoding, callback) { console.log('END', chunk, encoding) return super.end(chunk, encoding, callback) } })) .pipe(someDest) ``` ### subclass that defers 'end' for some reason ```js class SlowEnd extends Minipass { emit (ev, ...args) { if (ev === 'end') { console.log('going to end, hold on a sec') setTimeout(() => { console.log('ok, ready to end now') super.emit('end', ...args) }, 100) } else { return super.emit(ev, ...args) } } } ``` ### transform that creates newline-delimited JSON ```js class NDJSONEncode extends Minipass { write (obj, cb) { try { // JSON.stringify can throw, emit an error on that return super.write(JSON.stringify(obj) + '\n', 'utf8', cb) } catch (er) { this.emit('error', er) } } end (obj, cb) { if (typeof obj === 'function') { cb = obj obj = undefined } if (obj !== undefined) { this.write(obj) } return super.end(cb) } } ``` ### transform that parses newline-delimited JSON ```js class NDJSONDecode extends Minipass { constructor (options) { // always be in object mode, as far as Minipass is concerned super({ objectMode: true }) this._jsonBuffer = '' } write (chunk, encoding, cb) { if (typeof chunk === 'string' && typeof encoding === 'string' && encoding !== 'utf8') { chunk = Buffer.from(chunk, encoding).toString() } else if (Buffer.isBuffer(chunk)) chunk = chunk.toString() } if (typeof encoding === 'function') { cb = encoding } const jsonData = (this._jsonBuffer + chunk).split('\n') this._jsonBuffer = jsonData.pop() for (let i = 0; i < jsonData.length; i++) { try { // JSON.parse can throw, emit an error on that super.write(JSON.parse(jsonData[i])) } catch (er) { this.emit('error', er) continue } } if (cb) cb() } } ``` # lodash.sortby v4.7.0 The [lodash](https://lodash.com/) method `_.sortBy` exported as a [Node.js](https://nodejs.org/) module. ## Installation Using npm: ```bash $ {sudo -H} npm i -g npm $ npm i --save lodash.sortby ``` In Node.js: ```js var sortBy = require('lodash.sortby'); ``` See the [documentation](https://lodash.com/docs#sortBy) or [package source](https://github.com/lodash/lodash/blob/4.7.0-npm-packages/lodash.sortby) for more details. # flat-cache > A stupidly simple key/value storage using files to persist the data [](https://npmjs.org/package/flat-cache) [](https://travis-ci.org/royriojas/flat-cache) ## install ```bash npm i --save flat-cache ``` ## Usage ```js var flatCache = require('flat-cache') // loads the cache, if one does not exists for the given // Id a new one will be prepared to be created var cache = flatCache.load('cacheId'); // sets a key on the cache cache.setKey('key', { foo: 'var' }); // get a key from the cache cache.getKey('key') // { foo: 'var' } // fetch the entire persisted object cache.all() // { 'key': { foo: 'var' } } // remove a key cache.removeKey('key'); // removes a key from the cache // save it to disk cache.save(); // very important, if you don't save no changes will be persisted. // cache.save( true /* noPrune */) // can be used to prevent the removal of non visited keys // loads the cache from a given directory, if one does // not exists for the given Id a new one will be prepared to be created var cache = flatCache.load('cacheId', path.resolve('./path/to/folder')); // The following methods are useful to clear the cache // delete a given cache flatCache.clearCacheById('cacheId') // removes the cacheId document if one exists. // delete all cache flatCache.clearAll(); // remove the cache directory ``` ## Motivation for this module I needed a super simple and dumb **in-memory cache** with optional disk persistance in order to make a script that will beutify files with `esformatter` only execute on the files that were changed since the last run. To make that possible we need to store the `fileSize` and `modificationTime` of the files. So a simple `key/value` storage was needed and Bam! this module was born. ## Important notes - If no directory is especified when the `load` method is called, a folder named `.cache` will be created inside the module directory when `cache.save` is called. If you're committing your `node_modules` to any vcs, you might want to ignore the default `.cache` folder, or specify a custom directory. - The values set on the keys of the cache should be `stringify-able` ones, meaning no circular references - All the changes to the cache state are done to memory - I could have used a timer or `Object.observe` to deliver the changes to disk, but I wanted to keep this module intentionally dumb and simple - Non visited keys are removed when `cache.save()` is called. If this is not desired, you can pass `true` to the save call like: `cache.save( true /* noPrune */ )`. ## License MIT ## Changelog [changelog](./changelog.md) # lodash.clonedeep v4.5.0 The [lodash](https://lodash.com/) method `_.cloneDeep` exported as a [Node.js](https://nodejs.org/) module. ## Installation Using npm: ```bash $ {sudo -H} npm i -g npm $ npm i --save lodash.clonedeep ``` In Node.js: ```js var cloneDeep = require('lodash.clonedeep'); ``` See the [documentation](https://lodash.com/docs#cloneDeep) or [package source](https://github.com/lodash/lodash/blob/4.5.0-npm-packages/lodash.clonedeep) for more details. # line-column [](https://travis-ci.org/io-monad/line-column) [](https://coveralls.io/github/io-monad/line-column?branch=master) [](https://badge.fury.io/js/line-column) Node module to convert efficiently index to/from line-column in a string. ## Install npm install line-column ## Usage ### lineColumn(str, options = {}) Returns a `LineColumnFinder` instance for given string `str`. #### Options | Key | Description | Default | | ------- | ----------- | ------- | | `origin` | The origin value of line number and column number | `1` | ### lineColumn(str, index) This is just a shorthand for `lineColumn(str).fromIndex(index)`. ### LineColumnFinder#fromIndex(index) Find line and column from index in the string. Parameters: - `index` - `number` Index in the string. (0-origin) Returns: - `{ line: x, col: y }` Found line number and column number. - `null` if the given index is out of range. ### LineColumnFinder#toIndex(line, column) Find index from line and column in the string. Parameters: - `line` - `number` Line number in the string. - `column` - `number` Column number in the string. or - `{ line: x, col: y }` - `Object` line and column numbers in the string.<br>A key name `column` can be used instead of `col`. or - `[ line, col ]` - `Array` line and column numbers in the string. Returns: - `number` Found index in the string. - `-1` if the given line or column is out of range. ## Example ```js var lineColumn = require("line-column"); var testString = [ "ABCDEFG\n", // line:0, index:0 "HIJKLMNOPQRSTU\n", // line:1, index:8 "VWXYZ\n", // line:2, index:23 "日本語の文字\n", // line:3, index:29 "English words" // line:4, index:36 ].join(""); // length:49 lineColumn(testString).fromIndex(3) // { line: 1, col: 4 } lineColumn(testString).fromIndex(33) // { line: 4, col: 5 } lineColumn(testString).toIndex(1, 4) // 3 lineColumn(testString).toIndex(4, 5) // 33 // Shorthand of .fromIndex (compatible with find-line-column) lineColumn(testString, 33) // { line:4, col: 5 } // Object or Array is also acceptable lineColumn(testString).toIndex({ line: 4, col: 5 }) // 33 lineColumn(testString).toIndex({ line: 4, column: 5 }) // 33 lineColumn(testString).toIndex([4, 5]) // 33 // You can cache it for the same string. It is so efficient. (See benchmark) var finder = lineColumn(testString); finder.fromIndex(33) // { line: 4, column: 5 } finder.toIndex(4, 5) // 33 // For 0-origin line and column numbers var oneOrigin = lineColumn(testString, { origin: 0 }); oneOrigin.fromIndex(33) // { line: 3, column: 4 } oneOrigin.toIndex(3, 4) // 33 ``` ## Testing npm test ## Benchmark The popular package [find-line-column](https://www.npmjs.com/package/find-line-column) provides the same "index to line-column" feature. Here is some benchmarking on `line-column` vs `find-line-column`. You can run this benchmark by `npm run benchmark`. See [benchmark/](benchmark/) for the source code. ``` long text + line-column (not cached) x 72,989 ops/sec ±0.83% (89 runs sampled) long text + line-column (cached) x 13,074,242 ops/sec ±0.32% (89 runs sampled) long text + find-line-column x 33,887 ops/sec ±0.54% (84 runs sampled) short text + line-column (not cached) x 1,636,766 ops/sec ±0.77% (82 runs sampled) short text + line-column (cached) x 21,699,686 ops/sec ±1.04% (82 runs sampled) short text + find-line-column x 382,145 ops/sec ±1.04% (85 runs sampled) ``` As you might have noticed, even not cached version of `line-column` is 2x - 4x faster than `find-line-column`, and cached version of `line-column` is remarkable 50x - 380x faster. ## Contributing 1. Fork it! 2. Create your feature branch: `git checkout -b my-new-feature` 3. Commit your changes: `git commit -am 'Add some feature'` 4. Push to the branch: `git push origin my-new-feature` 5. Submit a pull request :D ## License MIT (See LICENSE) # fast-levenshtein - Levenshtein algorithm in Javascript [](http://travis-ci.org/hiddentao/fast-levenshtein) [](https://badge.fury.io/js/fast-levenshtein) [](https://www.npmjs.com/package/fast-levenshtein) [](https://twitter.com/hiddentao) An efficient Javascript implementation of the [Levenshtein algorithm](http://en.wikipedia.org/wiki/Levenshtein_distance) with locale-specific collator support. ## Features * Works in node.js and in the browser. * Better performance than other implementations by not needing to store the whole matrix ([more info](http://www.codeproject.com/Articles/13525/Fast-memory-efficient-Levenshtein-algorithm)). * Locale-sensitive string comparisions if needed. * Comprehensive test suite and performance benchmark. * Small: <1 KB minified and gzipped ## Installation ### node.js Install using [npm](http://npmjs.org/): ```bash $ npm install fast-levenshtein ``` ### Browser Using bower: ```bash $ bower install fast-levenshtein ``` If you are not using any module loader system then the API will then be accessible via the `window.Levenshtein` object. ## Examples **Default usage** ```javascript var levenshtein = require('fast-levenshtein'); var distance = levenshtein.get('back', 'book'); // 2 var distance = levenshtein.get('我愛你', '我叫你'); // 1 ``` **Locale-sensitive string comparisons** It supports using [Intl.Collator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Collator) for locale-sensitive string comparisons: ```javascript var levenshtein = require('fast-levenshtein'); levenshtein.get('mikailovitch', 'Mikhaïlovitch', { useCollator: true}); // 1 ``` ## Building and Testing To build the code and run the tests: ```bash $ npm install -g grunt-cli $ npm install $ npm run build ``` ## Performance _Thanks to [Titus Wormer](https://github.com/wooorm) for [encouraging me](https://github.com/hiddentao/fast-levenshtein/issues/1) to do this._ Benchmarked against other node.js levenshtein distance modules (on Macbook Air 2012, Core i7, 8GB RAM): ```bash Running suite Implementation comparison [benchmark/speed.js]... >> levenshtein-edit-distance x 234 ops/sec ±3.02% (73 runs sampled) >> levenshtein-component x 422 ops/sec ±4.38% (83 runs sampled) >> levenshtein-deltas x 283 ops/sec ±3.83% (78 runs sampled) >> natural x 255 ops/sec ±0.76% (88 runs sampled) >> levenshtein x 180 ops/sec ±3.55% (86 runs sampled) >> fast-levenshtein x 1,792 ops/sec ±2.72% (95 runs sampled) Benchmark done. Fastest test is fast-levenshtein at 4.2x faster than levenshtein-component ``` You can run this benchmark yourself by doing: ```bash $ npm install $ npm run build $ npm run benchmark ``` ## Contributing If you wish to submit a pull request please update and/or create new tests for any changes you make and ensure the grunt build passes. See [CONTRIBUTING.md](https://github.com/hiddentao/fast-levenshtein/blob/master/CONTRIBUTING.md) for details. ## License MIT - see [LICENSE.md](https://github.com/hiddentao/fast-levenshtein/blob/master/LICENSE.md) # minimatch A minimal matching utility. [](http://travis-ci.org/isaacs/minimatch) This is the matching library used internally by npm. It works by converting glob expressions into JavaScript `RegExp` objects. ## Usage ```javascript var minimatch = require("minimatch") minimatch("bar.foo", "*.foo") // true! minimatch("bar.foo", "*.bar") // false! minimatch("bar.foo", "*.+(bar|foo)", { debug: true }) // true, and noisy! ``` ## Features Supports these glob features: * Brace Expansion * Extended glob matching * "Globstar" `**` matching See: * `man sh` * `man bash` * `man 3 fnmatch` * `man 5 gitignore` ## Minimatch Class Create a minimatch object by instantiating the `minimatch.Minimatch` class. ```javascript var Minimatch = require("minimatch").Minimatch var mm = new Minimatch(pattern, options) ``` ### Properties * `pattern` The original pattern the minimatch object represents. * `options` The options supplied to the constructor. * `set` A 2-dimensional array of regexp or string expressions. Each row in the array corresponds to a brace-expanded pattern. Each item in the row corresponds to a single path-part. For example, the pattern `{a,b/c}/d` would expand to a set of patterns like: [ [ a, d ] , [ b, c, d ] ] If a portion of the pattern doesn't have any "magic" in it (that is, it's something like `"foo"` rather than `fo*o?`), then it will be left as a string rather than converted to a regular expression. * `regexp` Created by the `makeRe` method. A single regular expression expressing the entire pattern. This is useful in cases where you wish to use the pattern somewhat like `fnmatch(3)` with `FNM_PATH` enabled. * `negate` True if the pattern is negated. * `comment` True if the pattern is a comment. * `empty` True if the pattern is `""`. ### Methods * `makeRe` Generate the `regexp` member if necessary, and return it. Will return `false` if the pattern is invalid. * `match(fname)` Return true if the filename matches the pattern, or false otherwise. * `matchOne(fileArray, patternArray, partial)` Take a `/`-split filename, and match it against a single row in the `regExpSet`. This method is mainly for internal use, but is exposed so that it can be used by a glob-walker that needs to avoid excessive filesystem calls. All other methods are internal, and will be called as necessary. ### minimatch(path, pattern, options) Main export. Tests a path against the pattern using the options. ```javascript var isJS = minimatch(file, "*.js", { matchBase: true }) ``` ### minimatch.filter(pattern, options) Returns a function that tests its supplied argument, suitable for use with `Array.filter`. Example: ```javascript var javascripts = fileList.filter(minimatch.filter("*.js", {matchBase: true})) ``` ### minimatch.match(list, pattern, options) Match against the list of files, in the style of fnmatch or glob. If nothing is matched, and options.nonull is set, then return a list containing the pattern itself. ```javascript var javascripts = minimatch.match(fileList, "*.js", {matchBase: true})) ``` ### minimatch.makeRe(pattern, options) Make a regular expression object from the pattern. ## Options All options are `false` by default. ### debug Dump a ton of stuff to stderr. ### nobrace Do not expand `{a,b}` and `{1..3}` brace sets. ### noglobstar Disable `**` matching against multiple folder names. ### dot Allow patterns to match filenames starting with a period, even if the pattern does not explicitly have a period in that spot. Note that by default, `a/**/b` will **not** match `a/.d/b`, unless `dot` is set. ### noext Disable "extglob" style patterns like `+(a|b)`. ### nocase Perform a case-insensitive match. ### nonull When a match is not found by `minimatch.match`, return a list containing the pattern itself if this option is set. When not set, an empty list is returned if there are no matches. ### matchBase If set, then patterns without slashes will be matched against the basename of the path if it contains slashes. For example, `a?b` would match the path `/xyz/123/acb`, but not `/xyz/acb/123`. ### nocomment Suppress the behavior of treating `#` at the start of a pattern as a comment. ### nonegate Suppress the behavior of treating a leading `!` character as negation. ### flipNegate Returns from negate expressions the same as if they were not negated. (Ie, true on a hit, false on a miss.) ### partial Compare a partial path to a pattern. As long as the parts of the path that are present are not contradicted by the pattern, it will be treated as a match. This is useful in applications where you're walking through a folder structure, and don't yet have the full path, but want to ensure that you do not walk down paths that can never be a match. For example, ```js minimatch('/a/b', '/a/*/c/d', { partial: true }) // true, might be /a/b/c/d minimatch('/a/b', '/**/d', { partial: true }) // true, might be /a/b/.../d minimatch('/x/y/z', '/a/**/z', { partial: true }) // false, because x !== a ``` ### allowWindowsEscape Windows path separator `\` is by default converted to `/`, which prohibits the usage of `\` as a escape character. This flag skips that behavior and allows using the escape character. ## Comparisons to other fnmatch/glob implementations While strict compliance with the existing standards is a worthwhile goal, some discrepancies exist between minimatch and other implementations, and are intentional. If the pattern starts with a `!` character, then it is negated. Set the `nonegate` flag to suppress this behavior, and treat leading `!` characters normally. This is perhaps relevant if you wish to start the pattern with a negative extglob pattern like `!(a|B)`. Multiple `!` characters at the start of a pattern will negate the pattern multiple times. If a pattern starts with `#`, then it is treated as a comment, and will not match anything. Use `\#` to match a literal `#` at the start of a line, or set the `nocomment` flag to suppress this behavior. The double-star character `**` is supported by default, unless the `noglobstar` flag is set. This is supported in the manner of bsdglob and bash 4.1, where `**` only has special significance if it is the only thing in a path part. That is, `a/**/b` will match `a/x/y/b`, but `a/**b` will not. If an escaped pattern has no matches, and the `nonull` flag is set, then minimatch.match returns the pattern as-provided, rather than interpreting the character escapes. For example, `minimatch.match([], "\\*a\\?")` will return `"\\*a\\?"` rather than `"*a?"`. This is akin to setting the `nullglob` option in bash, except that it does not resolve escaped pattern characters. If brace expansion is not disabled, then it is performed before any other interpretation of the glob pattern. Thus, a pattern like `+(a|{b),c)}`, which would not be valid in bash or zsh, is expanded **first** into the set of `+(a|b)` and `+(a|c)`, and those patterns are checked for validity. Since those two are valid, matching proceeds. # [nearley](http://nearley.js.org) ↗️ [](http://js.org) [](https://badge.fury.io/js/nearley) nearley is a simple, fast and powerful parsing toolkit. It consists of: 1. [A powerful, modular DSL for describing languages](https://nearley.js.org/docs/grammar) 2. [An efficient, lightweight Earley parser](https://nearley.js.org/docs/parser) 3. [Loads of tools, editor plug-ins, and other goodies!](https://nearley.js.org/docs/tooling) nearley is a **streaming** parser with support for catching **errors** gracefully and providing _all_ parsings for **ambiguous** grammars. It is compatible with a variety of **lexers** (we recommend [moo](http://github.com/tjvr/moo)). It comes with tools for creating **tests**, **railroad diagrams** and **fuzzers** from your grammars, and has support for a variety of editors and platforms. It works in both node and the browser. Unlike most other parser generators, nearley can handle *any* grammar you can define in BNF (and more!). In particular, while most existing JS parsers such as PEGjs and Jison choke on certain grammars (e.g. [left recursive ones](http://en.wikipedia.org/wiki/Left_recursion)), nearley handles them easily and efficiently by using the [Earley parsing algorithm](https://en.wikipedia.org/wiki/Earley_parser). nearley is used by a wide variety of projects: - [artificial intelligence](https://github.com/ChalmersGU-AI-course/shrdlite-course-project) and - [computational linguistics](https://wiki.eecs.yorku.ca/course_archive/2014-15/W/6339/useful_handouts) classes at universities; - [file format parsers](https://github.com/raymond-h/node-dmi); - [data-driven markup languages](https://github.com/idyll-lang/idyll-compiler); - [compilers for real-world programming languages](https://github.com/sizigi/lp5562); - and nearley itself! The nearley compiler is bootstrapped. nearley is an npm [staff pick](https://www.npmjs.com/package/npm-collection-staff-picks). ## Documentation Please visit our website https://nearley.js.org to get started! You will find a tutorial, detailed reference documents, and links to several real-world examples to get inspired. ## Contributing Please read [this document](.github/CONTRIBUTING.md) *before* working on nearley. If you are interested in contributing but unsure where to start, take a look at the issues labeled "up for grabs" on the issue tracker, or message a maintainer (@kach or @tjvr on Github). nearley is MIT licensed. A big thanks to Nathan Dinsmore for teaching me how to Earley, Aria Stewart for helping structure nearley into a mature module, and Robin Windels for bootstrapping the grammar. Additionally, Jacob Edelman wrote an experimental JavaScript parser with nearley and contributed ideas for EBNF support. Joshua T. Corbin refactored the compiler to be much, much prettier. Bojidar Marinov implemented postprocessors-in-other-languages. Shachar Itzhaky fixed a subtle bug with nullables. ## Citing nearley If you are citing nearley in academic work, please use the following BibTeX entry. ```bibtex @misc{nearley, author = "Kartik Chandra and Tim Radvan", title = "{nearley}: a parsing toolkit for {JavaScript}", year = {2014}, doi = {10.5281/zenodo.3897993}, url = {https://github.com/kach/nearley} } ``` These files are compiled dot templates from dot folder. Do NOT edit them directly, edit the templates and run `npm run build` from main ajv folder. ### esutils [](http://travis-ci.org/estools/esutils) esutils ([esutils](http://github.com/estools/esutils)) is utility box for ECMAScript language tools. ### API ### ast #### ast.isExpression(node) Returns true if `node` is an Expression as defined in ECMA262 edition 5.1 section [11](https://es5.github.io/#x11). #### ast.isStatement(node) Returns true if `node` is a Statement as defined in ECMA262 edition 5.1 section [12](https://es5.github.io/#x12). #### ast.isIterationStatement(node) Returns true if `node` is an IterationStatement as defined in ECMA262 edition 5.1 section [12.6](https://es5.github.io/#x12.6). #### ast.isSourceElement(node) Returns true if `node` is a SourceElement as defined in ECMA262 edition 5.1 section [14](https://es5.github.io/#x14). #### ast.trailingStatement(node) Returns `Statement?` if `node` has trailing `Statement`. ```js if (cond) consequent; ``` When taking this `IfStatement`, returns `consequent;` statement. #### ast.isProblematicIfStatement(node) Returns true if `node` is a problematic IfStatement. If `node` is a problematic `IfStatement`, `node` cannot be represented as an one on one JavaScript code. ```js { type: 'IfStatement', consequent: { type: 'WithStatement', body: { type: 'IfStatement', consequent: {type: 'EmptyStatement'} } }, alternate: {type: 'EmptyStatement'} } ``` The above node cannot be represented as a JavaScript code, since the top level `else` alternate belongs to an inner `IfStatement`. ### code #### code.isDecimalDigit(code) Return true if provided code is decimal digit. #### code.isHexDigit(code) Return true if provided code is hexadecimal digit. #### code.isOctalDigit(code) Return true if provided code is octal digit. #### code.isWhiteSpace(code) Return true if provided code is white space. White space characters are formally defined in ECMA262. #### code.isLineTerminator(code) Return true if provided code is line terminator. Line terminator characters are formally defined in ECMA262. #### code.isIdentifierStart(code) Return true if provided code can be the first character of ECMA262 Identifier. They are formally defined in ECMA262. #### code.isIdentifierPart(code) Return true if provided code can be the trailing character of ECMA262 Identifier. They are formally defined in ECMA262. ### keyword #### keyword.isKeywordES5(id, strict) Returns `true` if provided identifier string is a Keyword or Future Reserved Word in ECMA262 edition 5.1. They are formally defined in ECMA262 sections [7.6.1.1](http://es5.github.io/#x7.6.1.1) and [7.6.1.2](http://es5.github.io/#x7.6.1.2), respectively. If the `strict` flag is truthy, this function additionally checks whether `id` is a Keyword or Future Reserved Word under strict mode. #### keyword.isKeywordES6(id, strict) Returns `true` if provided identifier string is a Keyword or Future Reserved Word in ECMA262 edition 6. They are formally defined in ECMA262 sections [11.6.2.1](http://ecma-international.org/ecma-262/6.0/#sec-keywords) and [11.6.2.2](http://ecma-international.org/ecma-262/6.0/#sec-future-reserved-words), respectively. If the `strict` flag is truthy, this function additionally checks whether `id` is a Keyword or Future Reserved Word under strict mode. #### keyword.isReservedWordES5(id, strict) Returns `true` if provided identifier string is a Reserved Word in ECMA262 edition 5.1. They are formally defined in ECMA262 section [7.6.1](http://es5.github.io/#x7.6.1). If the `strict` flag is truthy, this function additionally checks whether `id` is a Reserved Word under strict mode. #### keyword.isReservedWordES6(id, strict) Returns `true` if provided identifier string is a Reserved Word in ECMA262 edition 6. They are formally defined in ECMA262 section [11.6.2](http://ecma-international.org/ecma-262/6.0/#sec-reserved-words). If the `strict` flag is truthy, this function additionally checks whether `id` is a Reserved Word under strict mode. #### keyword.isRestrictedWord(id) Returns `true` if provided identifier string is one of `eval` or `arguments`. They are restricted in strict mode code throughout ECMA262 edition 5.1 and in ECMA262 edition 6 section [12.1.1](http://ecma-international.org/ecma-262/6.0/#sec-identifiers-static-semantics-early-errors). #### keyword.isIdentifierNameES5(id) Return true if provided identifier string is an IdentifierName as specified in ECMA262 edition 5.1 section [7.6](https://es5.github.io/#x7.6). #### keyword.isIdentifierNameES6(id) Return true if provided identifier string is an IdentifierName as specified in ECMA262 edition 6 section [11.6](http://ecma-international.org/ecma-262/6.0/#sec-names-and-keywords). #### keyword.isIdentifierES5(id, strict) Return true if provided identifier string is an Identifier as specified in ECMA262 edition 5.1 section [7.6](https://es5.github.io/#x7.6). If the `strict` flag is truthy, this function additionally checks whether `id` is an Identifier under strict mode. #### keyword.isIdentifierES6(id, strict) Return true if provided identifier string is an Identifier as specified in ECMA262 edition 6 section [12.1](http://ecma-international.org/ecma-262/6.0/#sec-identifiers). If the `strict` flag is truthy, this function additionally checks whether `id` is an Identifier under strict mode. ### License Copyright (C) 2013 [Yusuke Suzuki](http://github.com/Constellation) (twitter: [@Constellation](http://twitter.com/Constellation)) and other contributors. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # is-core-module <sup>[![Version Badge][2]][1]</sup> [![github actions][actions-image]][actions-url] [![coverage][codecov-image]][codecov-url] [![dependency status][5]][6] [![dev dependency status][7]][8] [![License][license-image]][license-url] [![Downloads][downloads-image]][downloads-url] [![npm badge][11]][1] Is this specifier a node.js core module? Optionally provide a node version to check; defaults to the current node version. ## Example ```js var isCore = require('is-core-module'); var assert = require('assert'); assert(isCore('fs')); assert(!isCore('butts')); ``` ## Tests Clone the repo, `npm install`, and run `npm test` [1]: https://npmjs.org/package/is-core-module [2]: https://versionbadg.es/inspect-js/is-core-module.svg [5]: https://david-dm.org/inspect-js/is-core-module.svg [6]: https://david-dm.org/inspect-js/is-core-module [7]: https://david-dm.org/inspect-js/is-core-module/dev-status.svg [8]: https://david-dm.org/inspect-js/is-core-module#info=devDependencies [11]: https://nodei.co/npm/is-core-module.png?downloads=true&stars=true [license-image]: https://img.shields.io/npm/l/is-core-module.svg [license-url]: LICENSE [downloads-image]: https://img.shields.io/npm/dm/is-core-module.svg [downloads-url]: https://npm-stat.com/charts.html?package=is-core-module [codecov-image]: https://codecov.io/gh/inspect-js/is-core-module/branch/main/graphs/badge.svg [codecov-url]: https://app.codecov.io/gh/inspect-js/is-core-module/ [actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/inspect-js/is-core-module [actions-url]: https://github.com/inspect-js/is-core-module/actions # isobject [](https://www.npmjs.com/package/isobject) [](https://npmjs.org/package/isobject) [](https://travis-ci.org/jonschlinkert/isobject) Returns true if the value is an object and not an array or null. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install isobject --save ``` Use [is-plain-object](https://github.com/jonschlinkert/is-plain-object) if you want only objects that are created by the `Object` constructor. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install isobject ``` Install with [bower](http://bower.io/) ```sh $ bower install isobject ``` ## Usage ```js var isObject = require('isobject'); ``` **True** All of the following return `true`: ```js isObject({}); isObject(Object.create({})); isObject(Object.create(Object.prototype)); isObject(Object.create(null)); isObject({}); isObject(new Foo); isObject(/foo/); ``` **False** All of the following return `false`: ```js isObject(); isObject(function () {}); isObject(1); isObject([]); isObject(undefined); isObject(null); ``` ## Related projects You might also be interested in these projects: [merge-deep](https://www.npmjs.com/package/merge-deep): Recursively merge values in a javascript object. | [homepage](https://github.com/jonschlinkert/merge-deep) * [extend-shallow](https://www.npmjs.com/package/extend-shallow): Extend an object with the properties of additional objects. node.js/javascript util. | [homepage](https://github.com/jonschlinkert/extend-shallow) * [is-plain-object](https://www.npmjs.com/package/is-plain-object): Returns true if an object was created by the `Object` constructor. | [homepage](https://github.com/jonschlinkert/is-plain-object) * [kind-of](https://www.npmjs.com/package/kind-of): Get the native type of a value. | [homepage](https://github.com/jonschlinkert/kind-of) ## Contributing Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](https://github.com/jonschlinkert/isobject/issues/new). ## Building docs Generate readme and API documentation with [verb](https://github.com/verbose/verb): ```sh $ npm install verb && npm run docs ``` Or, if [verb](https://github.com/verbose/verb) is installed globally: ```sh $ verb ``` ## Running tests Install dev dependencies: ```sh $ npm install -d && npm test ``` ## Author **Jon Schlinkert** * [github/jonschlinkert](https://github.com/jonschlinkert) * [twitter/jonschlinkert](http://twitter.com/jonschlinkert) ## License Copyright © 2016, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT license](https://github.com/jonschlinkert/isobject/blob/master/LICENSE). *** _This file was generated by [verb](https://github.com/verbose/verb), v0.9.0, on April 25, 2016._ ESQuery is a library for querying the AST output by Esprima for patterns of syntax using a CSS style selector system. Check out the demo: [demo](https://estools.github.io/esquery/) The following selectors are supported: * AST node type: `ForStatement` * [wildcard](http://dev.w3.org/csswg/selectors4/#universal-selector): `*` * [attribute existence](http://dev.w3.org/csswg/selectors4/#attribute-selectors): `[attr]` * [attribute value](http://dev.w3.org/csswg/selectors4/#attribute-selectors): `[attr="foo"]` or `[attr=123]` * attribute regex: `[attr=/foo.*/]` or (with flags) `[attr=/foo.*/is]` * attribute conditions: `[attr!="foo"]`, `[attr>2]`, `[attr<3]`, `[attr>=2]`, or `[attr<=3]` * nested attribute: `[attr.level2="foo"]` * field: `FunctionDeclaration > Identifier.id` * [First](http://dev.w3.org/csswg/selectors4/#the-first-child-pseudo) or [last](http://dev.w3.org/csswg/selectors4/#the-last-child-pseudo) child: `:first-child` or `:last-child` * [nth-child](http://dev.w3.org/csswg/selectors4/#the-nth-child-pseudo) (no ax+b support): `:nth-child(2)` * [nth-last-child](http://dev.w3.org/csswg/selectors4/#the-nth-last-child-pseudo) (no ax+b support): `:nth-last-child(1)` * [descendant](http://dev.w3.org/csswg/selectors4/#descendant-combinators): `ancestor descendant` * [child](http://dev.w3.org/csswg/selectors4/#child-combinators): `parent > child` * [following sibling](http://dev.w3.org/csswg/selectors4/#general-sibling-combinators): `node ~ sibling` * [adjacent sibling](http://dev.w3.org/csswg/selectors4/#adjacent-sibling-combinators): `node + adjacent` * [negation](http://dev.w3.org/csswg/selectors4/#negation-pseudo): `:not(ForStatement)` * [has](https://drafts.csswg.org/selectors-4/#has-pseudo): `:has(ForStatement)` * [matches-any](http://dev.w3.org/csswg/selectors4/#matches): `:matches([attr] > :first-child, :last-child)` * [subject indicator](http://dev.w3.org/csswg/selectors4/#subject): `!IfStatement > [name="foo"]` * class of AST node: `:statement`, `:expression`, `:declaration`, `:function`, or `:pattern` [](https://travis-ci.org/estools/esquery) # cross-spawn [![NPM version][npm-image]][npm-url] [![Downloads][downloads-image]][npm-url] [![Build Status][travis-image]][travis-url] [![Build status][appveyor-image]][appveyor-url] [![Coverage Status][codecov-image]][codecov-url] [![Dependency status][david-dm-image]][david-dm-url] [![Dev Dependency status][david-dm-dev-image]][david-dm-dev-url] [npm-url]:https://npmjs.org/package/cross-spawn [downloads-image]:https://img.shields.io/npm/dm/cross-spawn.svg [npm-image]:https://img.shields.io/npm/v/cross-spawn.svg [travis-url]:https://travis-ci.org/moxystudio/node-cross-spawn [travis-image]:https://img.shields.io/travis/moxystudio/node-cross-spawn/master.svg [appveyor-url]:https://ci.appveyor.com/project/satazor/node-cross-spawn [appveyor-image]:https://img.shields.io/appveyor/ci/satazor/node-cross-spawn/master.svg [codecov-url]:https://codecov.io/gh/moxystudio/node-cross-spawn [codecov-image]:https://img.shields.io/codecov/c/github/moxystudio/node-cross-spawn/master.svg [david-dm-url]:https://david-dm.org/moxystudio/node-cross-spawn [david-dm-image]:https://img.shields.io/david/moxystudio/node-cross-spawn.svg [david-dm-dev-url]:https://david-dm.org/moxystudio/node-cross-spawn?type=dev [david-dm-dev-image]:https://img.shields.io/david/dev/moxystudio/node-cross-spawn.svg A cross platform solution to node's spawn and spawnSync. ## Installation Node.js version 8 and up: `$ npm install cross-spawn` Node.js version 7 and under: `$ npm install cross-spawn@6` ## Why Node has issues when using spawn on Windows: - It ignores [PATHEXT](https://github.com/joyent/node/issues/2318) - It does not support [shebangs](https://en.wikipedia.org/wiki/Shebang_(Unix)) - Has problems running commands with [spaces](https://github.com/nodejs/node/issues/7367) - Has problems running commands with posix relative paths (e.g.: `./my-folder/my-executable`) - Has an [issue](https://github.com/moxystudio/node-cross-spawn/issues/82) with command shims (files in `node_modules/.bin/`), where arguments with quotes and parenthesis would result in [invalid syntax error](https://github.com/moxystudio/node-cross-spawn/blob/e77b8f22a416db46b6196767bcd35601d7e11d54/test/index.test.js#L149) - No `options.shell` support on node `<v4.8` All these issues are handled correctly by `cross-spawn`. There are some known modules, such as [win-spawn](https://github.com/ForbesLindesay/win-spawn), that try to solve this but they are either broken or provide faulty escaping of shell arguments. ## Usage Exactly the same way as node's [`spawn`](https://nodejs.org/api/child_process.html#child_process_child_process_spawn_command_args_options) or [`spawnSync`](https://nodejs.org/api/child_process.html#child_process_child_process_spawnsync_command_args_options), so it's a drop in replacement. ```js const spawn = require('cross-spawn'); // Spawn NPM asynchronously const child = spawn('npm', ['list', '-g', '-depth', '0'], { stdio: 'inherit' }); // Spawn NPM synchronously const result = spawn.sync('npm', ['list', '-g', '-depth', '0'], { stdio: 'inherit' }); ``` ## Caveats ### Using `options.shell` as an alternative to `cross-spawn` Starting from node `v4.8`, `spawn` has a `shell` option that allows you run commands from within a shell. This new option solves the [PATHEXT](https://github.com/joyent/node/issues/2318) issue but: - It's not supported in node `<v4.8` - You must manually escape the command and arguments which is very error prone, specially when passing user input - There are a lot of other unresolved issues from the [Why](#why) section that you must take into account If you are using the `shell` option to spawn a command in a cross platform way, consider using `cross-spawn` instead. You have been warned. ### `options.shell` support While `cross-spawn` adds support for `options.shell` in node `<v4.8`, all of its enhancements are disabled. This mimics the Node.js behavior. More specifically, the command and its arguments will not be automatically escaped nor shebang support will be offered. This is by design because if you are using `options.shell` you are probably targeting a specific platform anyway and you don't want things to get into your way. ### Shebangs support While `cross-spawn` handles shebangs on Windows, its support is limited. More specifically, it just supports `#!/usr/bin/env <program>` where `<program>` must not contain any arguments. If you would like to have the shebang support improved, feel free to contribute via a pull-request. Remember to always test your code on Windows! ## Tests `$ npm test` `$ npm test -- --watch` during development ## License Released under the [MIT License](https://www.opensource.org/licenses/mit-license.php). ### Estraverse [](http://travis-ci.org/estools/estraverse) Estraverse ([estraverse](http://github.com/estools/estraverse)) is [ECMAScript](http://www.ecma-international.org/publications/standards/Ecma-262.htm) traversal functions from [esmangle project](http://github.com/estools/esmangle). ### Documentation You can find usage docs at [wiki page](https://github.com/estools/estraverse/wiki/Usage). ### Example Usage The following code will output all variables declared at the root of a file. ```javascript estraverse.traverse(ast, { enter: function (node, parent) { if (node.type == 'FunctionExpression' || node.type == 'FunctionDeclaration') return estraverse.VisitorOption.Skip; }, leave: function (node, parent) { if (node.type == 'VariableDeclarator') console.log(node.id.name); } }); ``` We can use `this.skip`, `this.remove` and `this.break` functions instead of using Skip, Remove and Break. ```javascript estraverse.traverse(ast, { enter: function (node) { this.break(); } }); ``` And estraverse provides `estraverse.replace` function. When returning node from `enter`/`leave`, current node is replaced with it. ```javascript result = estraverse.replace(tree, { enter: function (node) { // Replace it with replaced. if (node.type === 'Literal') return replaced; } }); ``` By passing `visitor.keys` mapping, we can extend estraverse traversing functionality. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Extending the existing traversing rules. keys: { // TargetNodeName: [ 'keys', 'containing', 'the', 'other', '**node**' ] TestExpression: ['argument'] } }); ``` By passing `visitor.fallback` option, we can control the behavior when encountering unknown nodes. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Iterating the child **nodes** of unknown nodes. fallback: 'iteration' }); ``` When `visitor.fallback` is a function, we can determine which keys to visit on each node. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Skip the `argument` property of each node fallback: function(node) { return Object.keys(node).filter(function(key) { return key !== 'argument'; }); } }); ``` ### License Copyright (C) 2012-2016 [Yusuke Suzuki](http://github.com/Constellation) (twitter: [@Constellation](http://twitter.com/Constellation)) and other contributors. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # debug [](https://travis-ci.org/debug-js/debug) [](https://coveralls.io/github/debug-js/debug?branch=master) [](https://visionmedia-community-slackin.now.sh/) [](#backers) [](#sponsors) <img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png"> A tiny JavaScript debugging utility modelled after Node.js core's debugging technique. Works in Node.js and web browsers. ## Installation ```bash $ npm install debug ``` ## Usage `debug` exposes a function; simply pass this function the name of your module, and it will return a decorated version of `console.error` for you to pass debug statements to. This will allow you to toggle the debug output for different parts of your module as well as the module as a whole. Example [_app.js_](./examples/node/app.js): ```js var debug = require('debug')('http') , http = require('http') , name = 'My App'; // fake app debug('booting %o', name); http.createServer(function(req, res){ debug(req.method + ' ' + req.url); res.end('hello\n'); }).listen(3000, function(){ debug('listening'); }); // fake worker of some kind require('./worker'); ``` Example [_worker.js_](./examples/node/worker.js): ```js var a = require('debug')('worker:a') , b = require('debug')('worker:b'); function work() { a('doing lots of uninteresting work'); setTimeout(work, Math.random() * 1000); } work(); function workb() { b('doing some work'); setTimeout(workb, Math.random() * 2000); } workb(); ``` The `DEBUG` environment variable is then used to enable these based on space or comma-delimited names. Here are some examples: <img width="647" alt="screen shot 2017-08-08 at 12 53 04 pm" src="https://user-images.githubusercontent.com/71256/29091703-a6302cdc-7c38-11e7-8304-7c0b3bc600cd.png"> <img width="647" alt="screen shot 2017-08-08 at 12 53 38 pm" src="https://user-images.githubusercontent.com/71256/29091700-a62a6888-7c38-11e7-800b-db911291ca2b.png"> <img width="647" alt="screen shot 2017-08-08 at 12 53 25 pm" src="https://user-images.githubusercontent.com/71256/29091701-a62ea114-7c38-11e7-826a-2692bedca740.png"> #### Windows command prompt notes ##### CMD On Windows the environment variable is set using the `set` command. ```cmd set DEBUG=*,-not_this ``` Example: ```cmd set DEBUG=* & node app.js ``` ##### PowerShell (VS Code default) PowerShell uses different syntax to set environment variables. ```cmd $env:DEBUG = "*,-not_this" ``` Example: ```cmd $env:DEBUG='app';node app.js ``` Then, run the program to be debugged as usual. npm script example: ```js "windowsDebug": "@powershell -Command $env:DEBUG='*';node app.js", ``` ## Namespace Colors Every debug instance has a color generated for it based on its namespace name. This helps when visually parsing the debug output to identify which debug instance a debug line belongs to. #### Node.js In Node.js, colors are enabled when stderr is a TTY. You also _should_ install the [`supports-color`](https://npmjs.org/supports-color) module alongside debug, otherwise debug will only use a small handful of basic colors. <img width="521" src="https://user-images.githubusercontent.com/71256/29092181-47f6a9e6-7c3a-11e7-9a14-1928d8a711cd.png"> #### Web Browser Colors are also enabled on "Web Inspectors" that understand the `%c` formatting option. These are WebKit web inspectors, Firefox ([since version 31](https://hacks.mozilla.org/2014/05/editable-box-model-multiple-selection-sublime-text-keys-much-more-firefox-developer-tools-episode-31/)) and the Firebug plugin for Firefox (any version). <img width="524" src="https://user-images.githubusercontent.com/71256/29092033-b65f9f2e-7c39-11e7-8e32-f6f0d8e865c1.png"> ## Millisecond diff When actively developing an application it can be useful to see when the time spent between one `debug()` call and the next. Suppose for example you invoke `debug()` before requesting a resource, and after as well, the "+NNNms" will show you how much time was spent between calls. <img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png"> When stdout is not a TTY, `Date#toISOString()` is used, making it more useful for logging the debug information as shown below: <img width="647" src="https://user-images.githubusercontent.com/71256/29091956-6bd78372-7c39-11e7-8c55-c948396d6edd.png"> ## Conventions If you're using this in one or more of your libraries, you _should_ use the name of your library so that developers may toggle debugging as desired without guessing names. If you have more than one debuggers you _should_ prefix them with your library name and use ":" to separate features. For example "bodyParser" from Connect would then be "connect:bodyParser". If you append a "*" to the end of your name, it will always be enabled regardless of the setting of the DEBUG environment variable. You can then use it for normal output as well as debug output. ## Wildcards The `*` character may be used as a wildcard. Suppose for example your library has debuggers named "connect:bodyParser", "connect:compress", "connect:session", instead of listing all three with `DEBUG=connect:bodyParser,connect:compress,connect:session`, you may simply do `DEBUG=connect:*`, or to run everything using this module simply use `DEBUG=*`. You can also exclude specific debuggers by prefixing them with a "-" character. For example, `DEBUG=*,-connect:*` would include all debuggers except those starting with "connect:". ## Environment Variables When running through Node.js, you can set a few environment variables that will change the behavior of the debug logging: | Name | Purpose | |-----------|-------------------------------------------------| | `DEBUG` | Enables/disables specific debugging namespaces. | | `DEBUG_HIDE_DATE` | Hide date from debug output (non-TTY). | | `DEBUG_COLORS`| Whether or not to use colors in the debug output. | | `DEBUG_DEPTH` | Object inspection depth. | | `DEBUG_SHOW_HIDDEN` | Shows hidden properties on inspected objects. | __Note:__ The environment variables beginning with `DEBUG_` end up being converted into an Options object that gets used with `%o`/`%O` formatters. See the Node.js documentation for [`util.inspect()`](https://nodejs.org/api/util.html#util_util_inspect_object_options) for the complete list. ## Formatters Debug uses [printf-style](https://wikipedia.org/wiki/Printf_format_string) formatting. Below are the officially supported formatters: | Formatter | Representation | |-----------|----------------| | `%O` | Pretty-print an Object on multiple lines. | | `%o` | Pretty-print an Object all on a single line. | | `%s` | String. | | `%d` | Number (both integer and float). | | `%j` | JSON. Replaced with the string '[Circular]' if the argument contains circular references. | | `%%` | Single percent sign ('%'). This does not consume an argument. | ### Custom formatters You can add custom formatters by extending the `debug.formatters` object. For example, if you wanted to add support for rendering a Buffer as hex with `%h`, you could do something like: ```js const createDebug = require('debug') createDebug.formatters.h = (v) => { return v.toString('hex') } // …elsewhere const debug = createDebug('foo') debug('this is hex: %h', new Buffer('hello world')) // foo this is hex: 68656c6c6f20776f726c6421 +0ms ``` ## Browser Support You can build a browser-ready script using [browserify](https://github.com/substack/node-browserify), or just use the [browserify-as-a-service](https://wzrd.in/) [build](https://wzrd.in/standalone/debug@latest), if you don't want to build it yourself. Debug's enable state is currently persisted by `localStorage`. Consider the situation shown below where you have `worker:a` and `worker:b`, and wish to debug both. You can enable this using `localStorage.debug`: ```js localStorage.debug = 'worker:*' ``` And then refresh the page. ```js a = debug('worker:a'); b = debug('worker:b'); setInterval(function(){ a('doing some work'); }, 1000); setInterval(function(){ b('doing some work'); }, 1200); ``` In Chromium-based web browsers (e.g. Brave, Chrome, and Electron), the JavaScript console will—by default—only show messages logged by `debug` if the "Verbose" log level is _enabled_. <img width="647" src="https://user-images.githubusercontent.com/7143133/152083257-29034707-c42c-4959-8add-3cee850e6fcf.png"> ## Output streams By default `debug` will log to stderr, however this can be configured per-namespace by overriding the `log` method: Example [_stdout.js_](./examples/node/stdout.js): ```js var debug = require('debug'); var error = debug('app:error'); // by default stderr is used error('goes to stderr!'); var log = debug('app:log'); // set this namespace to log via console.log log.log = console.log.bind(console); // don't forget to bind to console! log('goes to stdout'); error('still goes to stderr!'); // set all output to go via console.info // overrides all per-namespace log settings debug.log = console.info.bind(console); error('now goes to stdout via console.info'); log('still goes to stdout, but via console.info now'); ``` ## Extend You can simply extend debugger ```js const log = require('debug')('auth'); //creates new debug instance with extended namespace const logSign = log.extend('sign'); const logLogin = log.extend('login'); log('hello'); // auth hello logSign('hello'); //auth:sign hello logLogin('hello'); //auth:login hello ``` ## Set dynamically You can also enable debug dynamically by calling the `enable()` method : ```js let debug = require('debug'); console.log(1, debug.enabled('test')); debug.enable('test'); console.log(2, debug.enabled('test')); debug.disable(); console.log(3, debug.enabled('test')); ``` print : ``` 1 false 2 true 3 false ``` Usage : `enable(namespaces)` `namespaces` can include modes separated by a colon and wildcards. Note that calling `enable()` completely overrides previously set DEBUG variable : ``` $ DEBUG=foo node -e 'var dbg = require("debug"); dbg.enable("bar"); console.log(dbg.enabled("foo"))' => false ``` `disable()` Will disable all namespaces. The functions returns the namespaces currently enabled (and skipped). This can be useful if you want to disable debugging temporarily without knowing what was enabled to begin with. For example: ```js let debug = require('debug'); debug.enable('foo:*,-foo:bar'); let namespaces = debug.disable(); debug.enable(namespaces); ``` Note: There is no guarantee that the string will be identical to the initial enable string, but semantically they will be identical. ## Checking whether a debug target is enabled After you've created a debug instance, you can determine whether or not it is enabled by checking the `enabled` property: ```javascript const debug = require('debug')('http'); if (debug.enabled) { // do stuff... } ``` You can also manually toggle this property to force the debug instance to be enabled or disabled. ## Usage in child processes Due to the way `debug` detects if the output is a TTY or not, colors are not shown in child processes when `stderr` is piped. A solution is to pass the `DEBUG_COLORS=1` environment variable to the child process. For example: ```javascript worker = fork(WORKER_WRAP_PATH, [workerPath], { stdio: [ /* stdin: */ 0, /* stdout: */ 'pipe', /* stderr: */ 'pipe', 'ipc', ], env: Object.assign({}, process.env, { DEBUG_COLORS: 1 // without this settings, colors won't be shown }), }); worker.stderr.pipe(process.stderr, { end: false }); ``` ## Authors - TJ Holowaychuk - Nathan Rajlich - Andrew Rhyne - Josh Junon ## Backers Support us with a monthly donation and help us continue our activities. 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Copyright (c) 2018-2021 Josh Junon Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # fast-deep-equal The fastest deep equal with ES6 Map, Set and Typed arrays support. [](https://travis-ci.org/epoberezkin/fast-deep-equal) [](https://www.npmjs.com/package/fast-deep-equal) [](https://coveralls.io/github/epoberezkin/fast-deep-equal?branch=master) ## Install ```bash npm install fast-deep-equal ``` ## Features - ES5 compatible - works in node.js (8+) and browsers (IE9+) - checks equality of Date and RegExp objects by value. ES6 equal (`require('fast-deep-equal/es6')`) also supports: - Maps - Sets - Typed arrays ## Usage ```javascript var equal = require('fast-deep-equal'); console.log(equal({foo: 'bar'}, {foo: 'bar'})); // true ``` To support ES6 Maps, Sets and Typed arrays equality use: ```javascript var equal = require('fast-deep-equal/es6'); console.log(equal(Int16Array([1, 2]), Int16Array([1, 2]))); // true ``` To use with React (avoiding the traversal of React elements' _owner property that contains circular references and is not needed when comparing the elements - borrowed from [react-fast-compare](https://github.com/FormidableLabs/react-fast-compare)): ```javascript var equal = require('fast-deep-equal/react'); var equal = require('fast-deep-equal/es6/react'); ``` ## Performance benchmark Node.js v12.6.0: ``` fast-deep-equal x 261,950 ops/sec ±0.52% (89 runs sampled) fast-deep-equal/es6 x 212,991 ops/sec ±0.34% (92 runs sampled) fast-equals x 230,957 ops/sec ±0.83% (85 runs sampled) nano-equal x 187,995 ops/sec ±0.53% (88 runs sampled) shallow-equal-fuzzy x 138,302 ops/sec ±0.49% (90 runs sampled) underscore.isEqual x 74,423 ops/sec ±0.38% (89 runs sampled) lodash.isEqual x 36,637 ops/sec ±0.72% (90 runs sampled) deep-equal x 2,310 ops/sec ±0.37% (90 runs sampled) deep-eql x 35,312 ops/sec ±0.67% (91 runs sampled) ramda.equals x 12,054 ops/sec ±0.40% (91 runs sampled) util.isDeepStrictEqual x 46,440 ops/sec ±0.43% (90 runs sampled) assert.deepStrictEqual x 456 ops/sec ±0.71% (88 runs sampled) The fastest is fast-deep-equal ``` To run benchmark (requires node.js 6+): ```bash npm run benchmark ``` __Please note__: this benchmark runs against the available test cases. To choose the most performant library for your application, it is recommended to benchmark against your data and to NOT expect this benchmark to reflect the performance difference in your application. ## Enterprise support fast-deep-equal package is a part of [Tidelift enterprise subscription](https://tidelift.com/subscription/pkg/npm-fast-deep-equal?utm_source=npm-fast-deep-equal&utm_medium=referral&utm_campaign=enterprise&utm_term=repo) - it provides a centralised commercial support to open-source software users, in addition to the support provided by software maintainers. ## Security contact To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. Please do NOT report security vulnerability via GitHub issues. ## License [MIT](https://github.com/epoberezkin/fast-deep-equal/blob/master/LICENSE) [](https://travis-ci.org/isaacs/rimraf) [](https://david-dm.org/isaacs/rimraf) [](https://david-dm.org/isaacs/rimraf#info=devDependencies) The [UNIX command](http://en.wikipedia.org/wiki/Rm_(Unix)) `rm -rf` for node. Install with `npm install rimraf`, or just drop rimraf.js somewhere. ## API `rimraf(f, [opts], callback)` The first parameter will be interpreted as a globbing pattern for files. If you want to disable globbing you can do so with `opts.disableGlob` (defaults to `false`). This might be handy, for instance, if you have filenames that contain globbing wildcard characters. The callback will be called with an error if there is one. Certain errors are handled for you: * Windows: `EBUSY` and `ENOTEMPTY` - rimraf will back off a maximum of `opts.maxBusyTries` times before giving up, adding 100ms of wait between each attempt. The default `maxBusyTries` is 3. * `ENOENT` - If the file doesn't exist, rimraf will return successfully, since your desired outcome is already the case. * `EMFILE` - Since `readdir` requires opening a file descriptor, it's possible to hit `EMFILE` if too many file descriptors are in use. In the sync case, there's nothing to be done for this. But in the async case, rimraf will gradually back off with timeouts up to `opts.emfileWait` ms, which defaults to 1000. ## options * unlink, chmod, stat, lstat, rmdir, readdir, unlinkSync, chmodSync, statSync, lstatSync, rmdirSync, readdirSync In order to use a custom file system library, you can override specific fs functions on the options object. If any of these functions are present on the options object, then the supplied function will be used instead of the default fs method. Sync methods are only relevant for `rimraf.sync()`, of course. For example: ```javascript var myCustomFS = require('some-custom-fs') rimraf('some-thing', myCustomFS, callback) ``` * maxBusyTries If an `EBUSY`, `ENOTEMPTY`, or `EPERM` error code is encountered on Windows systems, then rimraf will retry with a linear backoff wait of 100ms longer on each try. The default maxBusyTries is 3. Only relevant for async usage. * emfileWait If an `EMFILE` error is encountered, then rimraf will retry repeatedly with a linear backoff of 1ms longer on each try, until the timeout counter hits this max. The default limit is 1000. If you repeatedly encounter `EMFILE` errors, then consider using [graceful-fs](http://npm.im/graceful-fs) in your program. Only relevant for async usage. * glob Set to `false` to disable [glob](http://npm.im/glob) pattern matching. Set to an object to pass options to the glob module. The default glob options are `{ nosort: true, silent: true }`. Glob version 6 is used in this module. Relevant for both sync and async usage. * disableGlob Set to any non-falsey value to disable globbing entirely. (Equivalent to setting `glob: false`.) ## rimraf.sync It can remove stuff synchronously, too. But that's not so good. Use the async API. It's better. ## CLI If installed with `npm install rimraf -g` it can be used as a global command `rimraf <path> [<path> ...]` which is useful for cross platform support. ## mkdirp If you need to create a directory recursively, check out [mkdirp](https://github.com/substack/node-mkdirp). ## Test Strategy - tests are copied from the [polyfill implementation](https://github.com/tc39/proposal-temporal/tree/main/polyfill/test) - tests should be removed if they relate to features that do not make sense for TS/AS, i.e. tests that validate the shape of an object do not make sense in a language with compile-time type checking - tests that fail because a feature has not been implemented yet should be left as failures. # whatwg-url whatwg-url is a full implementation of the WHATWG [URL Standard](https://url.spec.whatwg.org/). It can be used standalone, but it also exposes a lot of the internal algorithms that are useful for integrating a URL parser into a project like [jsdom](https://github.com/tmpvar/jsdom). ## Specification conformance whatwg-url is currently up to date with the URL spec up to commit [7ae1c69](https://github.com/whatwg/url/commit/7ae1c691c96f0d82fafa24c33aa1e8df9ffbf2bc). For `file:` URLs, whose [origin is left unspecified](https://url.spec.whatwg.org/#concept-url-origin), whatwg-url chooses to use a new opaque origin (which serializes to `"null"`). ## API ### The `URL` and `URLSearchParams` classes The main API is provided by the [`URL`](https://url.spec.whatwg.org/#url-class) and [`URLSearchParams`](https://url.spec.whatwg.org/#interface-urlsearchparams) exports, which follows the spec's behavior in all ways (including e.g. `USVString` conversion). Most consumers of this library will want to use these. ### Low-level URL Standard API The following methods are exported for use by places like jsdom that need to implement things like [`HTMLHyperlinkElementUtils`](https://html.spec.whatwg.org/#htmlhyperlinkelementutils). They mostly operate on or return an "internal URL" or ["URL record"](https://url.spec.whatwg.org/#concept-url) type. - [URL parser](https://url.spec.whatwg.org/#concept-url-parser): `parseURL(input, { baseURL, encodingOverride })` - [Basic URL parser](https://url.spec.whatwg.org/#concept-basic-url-parser): `basicURLParse(input, { baseURL, encodingOverride, url, stateOverride })` - [URL serializer](https://url.spec.whatwg.org/#concept-url-serializer): `serializeURL(urlRecord, excludeFragment)` - [Host serializer](https://url.spec.whatwg.org/#concept-host-serializer): `serializeHost(hostFromURLRecord)` - [Serialize an integer](https://url.spec.whatwg.org/#serialize-an-integer): `serializeInteger(number)` - [Origin](https://url.spec.whatwg.org/#concept-url-origin) [serializer](https://html.spec.whatwg.org/multipage/origin.html#ascii-serialisation-of-an-origin): `serializeURLOrigin(urlRecord)` - [Set the username](https://url.spec.whatwg.org/#set-the-username): `setTheUsername(urlRecord, usernameString)` - [Set the password](https://url.spec.whatwg.org/#set-the-password): `setThePassword(urlRecord, passwordString)` - [Cannot have a username/password/port](https://url.spec.whatwg.org/#cannot-have-a-username-password-port): `cannotHaveAUsernamePasswordPort(urlRecord)` - [Percent decode](https://url.spec.whatwg.org/#percent-decode): `percentDecode(buffer)` The `stateOverride` parameter is one of the following strings: - [`"scheme start"`](https://url.spec.whatwg.org/#scheme-start-state) - [`"scheme"`](https://url.spec.whatwg.org/#scheme-state) - [`"no scheme"`](https://url.spec.whatwg.org/#no-scheme-state) - [`"special relative or authority"`](https://url.spec.whatwg.org/#special-relative-or-authority-state) - [`"path or authority"`](https://url.spec.whatwg.org/#path-or-authority-state) - [`"relative"`](https://url.spec.whatwg.org/#relative-state) - [`"relative slash"`](https://url.spec.whatwg.org/#relative-slash-state) - [`"special authority slashes"`](https://url.spec.whatwg.org/#special-authority-slashes-state) - [`"special authority ignore slashes"`](https://url.spec.whatwg.org/#special-authority-ignore-slashes-state) - [`"authority"`](https://url.spec.whatwg.org/#authority-state) - [`"host"`](https://url.spec.whatwg.org/#host-state) - [`"hostname"`](https://url.spec.whatwg.org/#hostname-state) - [`"port"`](https://url.spec.whatwg.org/#port-state) - [`"file"`](https://url.spec.whatwg.org/#file-state) - [`"file slash"`](https://url.spec.whatwg.org/#file-slash-state) - [`"file host"`](https://url.spec.whatwg.org/#file-host-state) - [`"path start"`](https://url.spec.whatwg.org/#path-start-state) - [`"path"`](https://url.spec.whatwg.org/#path-state) - [`"cannot-be-a-base-URL path"`](https://url.spec.whatwg.org/#cannot-be-a-base-url-path-state) - [`"query"`](https://url.spec.whatwg.org/#query-state) - [`"fragment"`](https://url.spec.whatwg.org/#fragment-state) The URL record type has the following API: - [`scheme`](https://url.spec.whatwg.org/#concept-url-scheme) - [`username`](https://url.spec.whatwg.org/#concept-url-username) - [`password`](https://url.spec.whatwg.org/#concept-url-password) - [`host`](https://url.spec.whatwg.org/#concept-url-host) - [`port`](https://url.spec.whatwg.org/#concept-url-port) - [`path`](https://url.spec.whatwg.org/#concept-url-path) (as an array) - [`query`](https://url.spec.whatwg.org/#concept-url-query) - [`fragment`](https://url.spec.whatwg.org/#concept-url-fragment) - [`cannotBeABaseURL`](https://url.spec.whatwg.org/#url-cannot-be-a-base-url-flag) (as a boolean) These properties should be treated with care, as in general changing them will cause the URL record to be in an inconsistent state until the appropriate invocation of `basicURLParse` is used to fix it up. You can see examples of this in the URL Standard, where there are many step sequences like "4. Set context object’s url’s fragment to the empty string. 5. Basic URL parse _input_ with context object’s url as _url_ and fragment state as _state override_." In between those two steps, a URL record is in an unusable state. The return value of "failure" in the spec is represented by `null`. That is, functions like `parseURL` and `basicURLParse` can return _either_ a URL record _or_ `null`. ## Development instructions First, install [Node.js](https://nodejs.org/). Then, fetch the dependencies of whatwg-url, by running from this directory: npm install To run tests: npm test To generate a coverage report: npm run coverage To build and run the live viewer: npm run build npm run build-live-viewer Serve the contents of the `live-viewer` directory using any web server. ## Supporting whatwg-url The jsdom project (including whatwg-url) is a community-driven project maintained by a team of [volunteers](https://github.com/orgs/jsdom/people). You could support us by: - [Getting professional support for whatwg-url](https://tidelift.com/subscription/pkg/npm-whatwg-url?utm_source=npm-whatwg-url&utm_medium=referral&utm_campaign=readme) as part of a Tidelift subscription. Tidelift helps making open source sustainable for us while giving teams assurances for maintenance, licensing, and security. - Contributing directly to the project. ### Estraverse [](http://travis-ci.org/estools/estraverse) Estraverse ([estraverse](http://github.com/estools/estraverse)) is [ECMAScript](http://www.ecma-international.org/publications/standards/Ecma-262.htm) traversal functions from [esmangle project](http://github.com/estools/esmangle). ### Documentation You can find usage docs at [wiki page](https://github.com/estools/estraverse/wiki/Usage). ### Example Usage The following code will output all variables declared at the root of a file. ```javascript estraverse.traverse(ast, { enter: function (node, parent) { if (node.type == 'FunctionExpression' || node.type == 'FunctionDeclaration') return estraverse.VisitorOption.Skip; }, leave: function (node, parent) { if (node.type == 'VariableDeclarator') console.log(node.id.name); } }); ``` We can use `this.skip`, `this.remove` and `this.break` functions instead of using Skip, Remove and Break. ```javascript estraverse.traverse(ast, { enter: function (node) { this.break(); } }); ``` And estraverse provides `estraverse.replace` function. When returning node from `enter`/`leave`, current node is replaced with it. ```javascript result = estraverse.replace(tree, { enter: function (node) { // Replace it with replaced. if (node.type === 'Literal') return replaced; } }); ``` By passing `visitor.keys` mapping, we can extend estraverse traversing functionality. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Extending the existing traversing rules. keys: { // TargetNodeName: [ 'keys', 'containing', 'the', 'other', '**node**' ] TestExpression: ['argument'] } }); ``` By passing `visitor.fallback` option, we can control the behavior when encountering unknown nodes. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Iterating the child **nodes** of unknown nodes. fallback: 'iteration' }); ``` When `visitor.fallback` is a function, we can determine which keys to visit on each node. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Skip the `argument` property of each node fallback: function(node) { return Object.keys(node).filter(function(key) { return key !== 'argument'; }); } }); ``` ### License Copyright (C) 2012-2016 [Yusuke Suzuki](http://github.com/Constellation) (twitter: [@Constellation](http://twitter.com/Constellation)) and other contributors. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # AssemblyScript Loader A convenient loader for [AssemblyScript](https://assemblyscript.org) modules. Demangles module exports to a friendly object structure compatible with TypeScript definitions and provides useful utility to read/write data from/to memory. [Documentation](https://assemblyscript.org/loader.html) # Regular Expression Tokenizer Tokenizes strings that represent a regular expressions. [](http://travis-ci.org/fent/ret.js) [](https://david-dm.org/fent/ret.js) [](https://codecov.io/gh/fent/ret.js) # Usage ```js var ret = require('ret'); var tokens = ret(/foo|bar/.source); ``` `tokens` will contain the following object ```js { "type": ret.types.ROOT "options": [ [ { "type": ret.types.CHAR, "value", 102 }, { "type": ret.types.CHAR, "value", 111 }, { "type": ret.types.CHAR, "value", 111 } ], [ { "type": ret.types.CHAR, "value", 98 }, { "type": ret.types.CHAR, "value", 97 }, { "type": ret.types.CHAR, "value", 114 } ] ] } ``` # Token Types `ret.types` is a collection of the various token types exported by ret. ### ROOT Only used in the root of the regexp. This is needed due to the posibility of the root containing a pipe `|` character. In that case, the token will have an `options` key that will be an array of arrays of tokens. If not, it will contain a `stack` key that is an array of tokens. ```js { "type": ret.types.ROOT, "stack": [token1, token2...], } ``` ```js { "type": ret.types.ROOT, "options" [ [token1, token2...], [othertoken1, othertoken2...] ... ], } ``` ### GROUP Groups contain tokens that are inside of a parenthesis. If the group begins with `?` followed by another character, it's a special type of group. A ':' tells the group not to be remembered when `exec` is used. '=' means the previous token matches only if followed by this group, and '!' means the previous token matches only if NOT followed. Like root, it can contain an `options` key instead of `stack` if there is a pipe. ```js { "type": ret.types.GROUP, "remember" true, "followedBy": false, "notFollowedBy": false, "stack": [token1, token2...], } ``` ```js { "type": ret.types.GROUP, "remember" true, "followedBy": false, "notFollowedBy": false, "options" [ [token1, token2...], [othertoken1, othertoken2...] ... ], } ``` ### POSITION `\b`, `\B`, `^`, and `$` specify positions in the regexp. ```js { "type": ret.types.POSITION, "value": "^", } ``` ### SET Contains a key `set` specifying what tokens are allowed and a key `not` specifying if the set should be negated. A set can contain other sets, ranges, and characters. ```js { "type": ret.types.SET, "set": [token1, token2...], "not": false, } ``` ### RANGE Used in set tokens to specify a character range. `from` and `to` are character codes. ```js { "type": ret.types.RANGE, "from": 97, "to": 122, } ``` ### REPETITION ```js { "type": ret.types.REPETITION, "min": 0, "max": Infinity, "value": token, } ``` ### REFERENCE References a group token. `value` is 1-9. ```js { "type": ret.types.REFERENCE, "value": 1, } ``` ### CHAR Represents a single character token. `value` is the character code. This might seem a bit cluttering instead of concatenating characters together. But since repetition tokens only repeat the last token and not the last clause like the pipe, it's simpler to do it this way. ```js { "type": ret.types.CHAR, "value": 123, } ``` ## Errors ret.js will throw errors if given a string with an invalid regular expression. All possible errors are * Invalid group. When a group with an immediate `?` character is followed by an invalid character. It can only be followed by `!`, `=`, or `:`. Example: `/(?_abc)/` * Nothing to repeat. Thrown when a repetitional token is used as the first token in the current clause, as in right in the beginning of the regexp or group, or right after a pipe. Example: `/foo|?bar/`, `/{1,3}foo|bar/`, `/foo(+bar)/` * Unmatched ). A group was not opened, but was closed. Example: `/hello)2u/` * Unterminated group. A group was not closed. Example: `/(1(23)4/` * Unterminated character class. A custom character set was not closed. Example: `/[abc/` # Install npm install ret # Tests Tests are written with [vows](http://vowsjs.org/) ```bash npm test ``` # License MIT <p align="center"> <img width="250" src="/yargs-logo.png"> </p> <h1 align="center"> Yargs </h1> <p align="center"> <b >Yargs be a node.js library fer hearties tryin' ter parse optstrings</b> </p> <br> [![Build Status][travis-image]][travis-url] [![NPM version][npm-image]][npm-url] [![js-standard-style][standard-image]][standard-url] [![Coverage][coverage-image]][coverage-url] [![Conventional Commits][conventional-commits-image]][conventional-commits-url] [![Slack][slack-image]][slack-url] ## Description : Yargs helps you build interactive command line tools, by parsing arguments and generating an elegant user interface. It gives you: * commands and (grouped) options (`my-program.js serve --port=5000`). * a dynamically generated help menu based on your arguments. > <img width="400" src="/screen.png"> * bash-completion shortcuts for commands and options. * and [tons more](/docs/api.md). ## Installation Stable version: ```bash npm i yargs ``` Bleeding edge version with the most recent features: ```bash npm i yargs@next ``` ## Usage : ### Simple Example ```javascript #!/usr/bin/env node const {argv} = require('yargs') if (argv.ships > 3 && argv.distance < 53.5) { console.log('Plunder more riffiwobbles!') } else { console.log('Retreat from the xupptumblers!') } ``` ```bash $ ./plunder.js --ships=4 --distance=22 Plunder more riffiwobbles! $ ./plunder.js --ships 12 --distance 98.7 Retreat from the xupptumblers! ``` ### Complex Example ```javascript #!/usr/bin/env node require('yargs') // eslint-disable-line .command('serve [port]', 'start the server', (yargs) => { yargs .positional('port', { describe: 'port to bind on', default: 5000 }) }, (argv) => { if (argv.verbose) console.info(`start server on :${argv.port}`) serve(argv.port) }) .option('verbose', { alias: 'v', type: 'boolean', description: 'Run with verbose logging' }) .argv ``` Run the example above with `--help` to see the help for the application. ## TypeScript yargs has type definitions at [@types/yargs][type-definitions]. ``` npm i @types/yargs --save-dev ``` See usage examples in [docs](/docs/typescript.md). ## Webpack See usage examples of yargs with webpack in [docs](/docs/webpack.md). ## Community : Having problems? want to contribute? join our [community slack](http://devtoolscommunity.herokuapp.com). ## Documentation : ### Table of Contents * [Yargs' API](/docs/api.md) * [Examples](/docs/examples.md) * [Parsing Tricks](/docs/tricks.md) * [Stop the Parser](/docs/tricks.md#stop) * [Negating Boolean Arguments](/docs/tricks.md#negate) * [Numbers](/docs/tricks.md#numbers) * [Arrays](/docs/tricks.md#arrays) * [Objects](/docs/tricks.md#objects) * [Quotes](/docs/tricks.md#quotes) * [Advanced Topics](/docs/advanced.md) * [Composing Your App Using Commands](/docs/advanced.md#commands) * [Building Configurable CLI Apps](/docs/advanced.md#configuration) * [Customizing Yargs' Parser](/docs/advanced.md#customizing) * [Contributing](/contributing.md) [travis-url]: https://travis-ci.org/yargs/yargs [travis-image]: https://img.shields.io/travis/yargs/yargs/master.svg [npm-url]: https://www.npmjs.com/package/yargs [npm-image]: https://img.shields.io/npm/v/yargs.svg [standard-image]: https://img.shields.io/badge/code%20style-standard-brightgreen.svg [standard-url]: http://standardjs.com/ [conventional-commits-image]: https://img.shields.io/badge/Conventional%20Commits-1.0.0-yellow.svg [conventional-commits-url]: https://conventionalcommits.org/ [slack-image]: http://devtoolscommunity.herokuapp.com/badge.svg [slack-url]: http://devtoolscommunity.herokuapp.com [type-definitions]: https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/yargs [coverage-image]: https://img.shields.io/nycrc/yargs/yargs [coverage-url]: https://github.com/yargs/yargs/blob/master/.nycrc # has > Object.prototype.hasOwnProperty.call shortcut ## Installation ```sh npm install --save has ``` ## Usage ```js var has = require('has'); has({}, 'hasOwnProperty'); // false has(Object.prototype, 'hasOwnProperty'); // true ``` bs58 ==== [](https://travis-ci.org/cryptocoinjs/bs58) JavaScript component to compute base 58 encoding. This encoding is typically used for crypto currencies such as Bitcoin. **Note:** If you're looking for **base 58 check** encoding, see: [https://github.com/bitcoinjs/bs58check](https://github.com/bitcoinjs/bs58check), which depends upon this library. Install ------- npm i --save bs58 API --- ### encode(input) `input` must be a [Buffer](https://nodejs.org/api/buffer.html) or an `Array`. It returns a `string`. **example**: ```js const bs58 = require('bs58') const bytes = Buffer.from('003c176e659bea0f29a3e9bf7880c112b1b31b4dc826268187', 'hex') const address = bs58.encode(bytes) console.log(address) // => 16UjcYNBG9GTK4uq2f7yYEbuifqCzoLMGS ``` ### decode(input) `input` must be a base 58 encoded string. Returns a [Buffer](https://nodejs.org/api/buffer.html). **example**: ```js const bs58 = require('bs58') const address = '16UjcYNBG9GTK4uq2f7yYEbuifqCzoLMGS' const bytes = bs58.decode(address) console.log(out.toString('hex')) // => 003c176e659bea0f29a3e9bf7880c112b1b31b4dc826268187 ``` Hack / Test ----------- Uses JavaScript standard style. Read more: [](https://github.com/feross/standard) Credits ------- - [Mike Hearn](https://github.com/mikehearn) for original Java implementation - [Stefan Thomas](https://github.com/justmoon) for porting to JavaScript - [Stephan Pair](https://github.com/gasteve) for buffer improvements - [Daniel Cousens](https://github.com/dcousens) for cleanup and merging improvements from bitcoinjs-lib - [Jared Deckard](https://github.com/deckar01) for killing `bigi` as a dependency License ------- MIT # emoji-regex [](https://travis-ci.org/mathiasbynens/emoji-regex) _emoji-regex_ offers a regular expression to match all emoji symbols (including textual representations of emoji) as per the Unicode Standard. This repository contains a script that generates this regular expression based on [the data from Unicode v12](https://github.com/mathiasbynens/unicode-12.0.0). Because of this, the regular expression can easily be updated whenever new emoji are added to the Unicode standard. ## Installation Via [npm](https://www.npmjs.com/): ```bash npm install emoji-regex ``` In [Node.js](https://nodejs.org/): ```js const emojiRegex = require('emoji-regex'); // Note: because the regular expression has the global flag set, this module // exports a function that returns the regex rather than exporting the regular // expression itself, to make it impossible to (accidentally) mutate the // original regular expression. const text = ` \u{231A}: ⌚ default emoji presentation character (Emoji_Presentation) \u{2194}\u{FE0F}: ↔️ default text presentation character rendered as emoji \u{1F469}: 👩 emoji modifier base (Emoji_Modifier_Base) \u{1F469}\u{1F3FF}: 👩🏿 emoji modifier base followed by a modifier `; const regex = emojiRegex(); let match; while (match = regex.exec(text)) { const emoji = match[0]; console.log(`Matched sequence ${ emoji } — code points: ${ [...emoji].length }`); } ``` Console output: ``` Matched sequence ⌚ — code points: 1 Matched sequence ⌚ — code points: 1 Matched sequence ↔️ — code points: 2 Matched sequence ↔️ — code points: 2 Matched sequence 👩 — code points: 1 Matched sequence 👩 — code points: 1 Matched sequence 👩🏿 — code points: 2 Matched sequence 👩🏿 — code points: 2 ``` To match emoji in their textual representation as well (i.e. emoji that are not `Emoji_Presentation` symbols and that aren’t forced to render as emoji by a variation selector), `require` the other regex: ```js const emojiRegex = require('emoji-regex/text.js'); ``` Additionally, in environments which support ES2015 Unicode escapes, you may `require` ES2015-style versions of the regexes: ```js const emojiRegex = require('emoji-regex/es2015/index.js'); const emojiRegexText = require('emoji-regex/es2015/text.js'); ``` ## Author | [](https://twitter.com/mathias "Follow @mathias on Twitter") | |---| | [Mathias Bynens](https://mathiasbynens.be/) | ## License _emoji-regex_ is available under the [MIT](https://mths.be/mit) license. semver(1) -- The semantic versioner for npm =========================================== ## Install ```bash npm install semver ```` ## Usage As a node module: ```js const semver = require('semver') semver.valid('1.2.3') // '1.2.3' semver.valid('a.b.c') // null semver.clean(' =v1.2.3 ') // '1.2.3' semver.satisfies('1.2.3', '1.x || >=2.5.0 || 5.0.0 - 7.2.3') // true semver.gt('1.2.3', '9.8.7') // false semver.lt('1.2.3', '9.8.7') // true semver.minVersion('>=1.0.0') // '1.0.0' semver.valid(semver.coerce('v2')) // '2.0.0' semver.valid(semver.coerce('42.6.7.9.3-alpha')) // '42.6.7' ``` You can also just load the module for the function that you care about, if you'd like to minimize your footprint. ```js // load the whole API at once in a single object const semver = require('semver') // or just load the bits you need // all of them listed here, just pick and choose what you want // classes const SemVer = require('semver/classes/semver') const Comparator = require('semver/classes/comparator') const Range = require('semver/classes/range') // functions for working with versions const semverParse = require('semver/functions/parse') const semverValid = require('semver/functions/valid') const semverClean = require('semver/functions/clean') const semverInc = require('semver/functions/inc') const semverDiff = require('semver/functions/diff') const semverMajor = require('semver/functions/major') const semverMinor = require('semver/functions/minor') const semverPatch = require('semver/functions/patch') const semverPrerelease = require('semver/functions/prerelease') const semverCompare = require('semver/functions/compare') const semverRcompare = require('semver/functions/rcompare') const semverCompareLoose = require('semver/functions/compare-loose') const semverCompareBuild = require('semver/functions/compare-build') const semverSort = require('semver/functions/sort') const semverRsort = require('semver/functions/rsort') // low-level comparators between versions const semverGt = require('semver/functions/gt') const semverLt = require('semver/functions/lt') const semverEq = require('semver/functions/eq') const semverNeq = require('semver/functions/neq') const semverGte = require('semver/functions/gte') const semverLte = require('semver/functions/lte') const semverCmp = require('semver/functions/cmp') const semverCoerce = require('semver/functions/coerce') // working with ranges const semverSatisfies = require('semver/functions/satisfies') const semverMaxSatisfying = require('semver/ranges/max-satisfying') const semverMinSatisfying = require('semver/ranges/min-satisfying') const semverToComparators = require('semver/ranges/to-comparators') const semverMinVersion = require('semver/ranges/min-version') const semverValidRange = require('semver/ranges/valid') const semverOutside = require('semver/ranges/outside') const semverGtr = require('semver/ranges/gtr') const semverLtr = require('semver/ranges/ltr') const semverIntersects = require('semver/ranges/intersects') const simplifyRange = require('semver/ranges/simplify') const rangeSubset = require('semver/ranges/subset') ``` As a command-line utility: ``` $ semver -h A JavaScript implementation of the https://semver.org/ specification Copyright Isaac Z. Schlueter Usage: semver [options] <version> [<version> [...]] Prints valid versions sorted by SemVer precedence Options: -r --range <range> Print versions that match the specified range. -i --increment [<level>] Increment a version by the specified level. Level can be one of: major, minor, patch, premajor, preminor, prepatch, or prerelease. Default level is 'patch'. Only one version may be specified. --preid <identifier> Identifier to be used to prefix premajor, preminor, prepatch or prerelease version increments. -l --loose Interpret versions and ranges loosely -p --include-prerelease Always include prerelease versions in range matching -c --coerce Coerce a string into SemVer if possible (does not imply --loose) --rtl Coerce version strings right to left --ltr Coerce version strings left to right (default) Program exits successfully if any valid version satisfies all supplied ranges, and prints all satisfying versions. If no satisfying versions are found, then exits failure. Versions are printed in ascending order, so supplying multiple versions to the utility will just sort them. ``` ## Versions A "version" is described by the `v2.0.0` specification found at <https://semver.org/>. A leading `"="` or `"v"` character is stripped off and ignored. ## Ranges A `version range` is a set of `comparators` which specify versions that satisfy the range. A `comparator` is composed of an `operator` and a `version`. The set of primitive `operators` is: * `<` Less than * `<=` Less than or equal to * `>` Greater than * `>=` Greater than or equal to * `=` Equal. If no operator is specified, then equality is assumed, so this operator is optional, but MAY be included. For example, the comparator `>=1.2.7` would match the versions `1.2.7`, `1.2.8`, `2.5.3`, and `1.3.9`, but not the versions `1.2.6` or `1.1.0`. Comparators can be joined by whitespace to form a `comparator set`, which is satisfied by the **intersection** of all of the comparators it includes. A range is composed of one or more comparator sets, joined by `||`. A version matches a range if and only if every comparator in at least one of the `||`-separated comparator sets is satisfied by the version. For example, the range `>=1.2.7 <1.3.0` would match the versions `1.2.7`, `1.2.8`, and `1.2.99`, but not the versions `1.2.6`, `1.3.0`, or `1.1.0`. The range `1.2.7 || >=1.2.9 <2.0.0` would match the versions `1.2.7`, `1.2.9`, and `1.4.6`, but not the versions `1.2.8` or `2.0.0`. ### Prerelease Tags If a version has a prerelease tag (for example, `1.2.3-alpha.3`) then it will only be allowed to satisfy comparator sets if at least one comparator with the same `[major, minor, patch]` tuple also has a prerelease tag. For example, the range `>1.2.3-alpha.3` would be allowed to match the version `1.2.3-alpha.7`, but it would *not* be satisfied by `3.4.5-alpha.9`, even though `3.4.5-alpha.9` is technically "greater than" `1.2.3-alpha.3` according to the SemVer sort rules. The version range only accepts prerelease tags on the `1.2.3` version. The version `3.4.5` *would* satisfy the range, because it does not have a prerelease flag, and `3.4.5` is greater than `1.2.3-alpha.7`. The purpose for this behavior is twofold. First, prerelease versions frequently are updated very quickly, and contain many breaking changes that are (by the author's design) not yet fit for public consumption. Therefore, by default, they are excluded from range matching semantics. Second, a user who has opted into using a prerelease version has clearly indicated the intent to use *that specific* set of alpha/beta/rc versions. By including a prerelease tag in the range, the user is indicating that they are aware of the risk. However, it is still not appropriate to assume that they have opted into taking a similar risk on the *next* set of prerelease versions. Note that this behavior can be suppressed (treating all prerelease versions as if they were normal versions, for the purpose of range matching) by setting the `includePrerelease` flag on the options object to any [functions](https://github.com/npm/node-semver#functions) that do range matching. #### Prerelease Identifiers The method `.inc` takes an additional `identifier` string argument that will append the value of the string as a prerelease identifier: ```javascript semver.inc('1.2.3', 'prerelease', 'beta') // '1.2.4-beta.0' ``` command-line example: ```bash $ semver 1.2.3 -i prerelease --preid beta 1.2.4-beta.0 ``` Which then can be used to increment further: ```bash $ semver 1.2.4-beta.0 -i prerelease 1.2.4-beta.1 ``` ### Advanced Range Syntax Advanced range syntax desugars to primitive comparators in deterministic ways. Advanced ranges may be combined in the same way as primitive comparators using white space or `||`. #### Hyphen Ranges `X.Y.Z - A.B.C` Specifies an inclusive set. * `1.2.3 - 2.3.4` := `>=1.2.3 <=2.3.4` If a partial version is provided as the first version in the inclusive range, then the missing pieces are replaced with zeroes. * `1.2 - 2.3.4` := `>=1.2.0 <=2.3.4` If a partial version is provided as the second version in the inclusive range, then all versions that start with the supplied parts of the tuple are accepted, but nothing that would be greater than the provided tuple parts. * `1.2.3 - 2.3` := `>=1.2.3 <2.4.0-0` * `1.2.3 - 2` := `>=1.2.3 <3.0.0-0` #### X-Ranges `1.2.x` `1.X` `1.2.*` `*` Any of `X`, `x`, or `*` may be used to "stand in" for one of the numeric values in the `[major, minor, patch]` tuple. * `*` := `>=0.0.0` (Any non-prerelease version satisfies, unless `includePrerelease` is specified, in which case any version at all satisfies) * `1.x` := `>=1.0.0 <2.0.0-0` (Matching major version) * `1.2.x` := `>=1.2.0 <1.3.0-0` (Matching major and minor versions) A partial version range is treated as an X-Range, so the special character is in fact optional. * `""` (empty string) := `*` := `>=0.0.0` * `1` := `1.x.x` := `>=1.0.0 <2.0.0-0` * `1.2` := `1.2.x` := `>=1.2.0 <1.3.0-0` #### Tilde Ranges `~1.2.3` `~1.2` `~1` Allows patch-level changes if a minor version is specified on the comparator. Allows minor-level changes if not. * `~1.2.3` := `>=1.2.3 <1.(2+1).0` := `>=1.2.3 <1.3.0-0` * `~1.2` := `>=1.2.0 <1.(2+1).0` := `>=1.2.0 <1.3.0-0` (Same as `1.2.x`) * `~1` := `>=1.0.0 <(1+1).0.0` := `>=1.0.0 <2.0.0-0` (Same as `1.x`) * `~0.2.3` := `>=0.2.3 <0.(2+1).0` := `>=0.2.3 <0.3.0-0` * `~0.2` := `>=0.2.0 <0.(2+1).0` := `>=0.2.0 <0.3.0-0` (Same as `0.2.x`) * `~0` := `>=0.0.0 <(0+1).0.0` := `>=0.0.0 <1.0.0-0` (Same as `0.x`) * `~1.2.3-beta.2` := `>=1.2.3-beta.2 <1.3.0-0` Note that prereleases in the `1.2.3` version will be allowed, if they are greater than or equal to `beta.2`. So, `1.2.3-beta.4` would be allowed, but `1.2.4-beta.2` would not, because it is a prerelease of a different `[major, minor, patch]` tuple. #### Caret Ranges `^1.2.3` `^0.2.5` `^0.0.4` Allows changes that do not modify the left-most non-zero element in the `[major, minor, patch]` tuple. In other words, this allows patch and minor updates for versions `1.0.0` and above, patch updates for versions `0.X >=0.1.0`, and *no* updates for versions `0.0.X`. Many authors treat a `0.x` version as if the `x` were the major "breaking-change" indicator. Caret ranges are ideal when an author may make breaking changes between `0.2.4` and `0.3.0` releases, which is a common practice. However, it presumes that there will *not* be breaking changes between `0.2.4` and `0.2.5`. It allows for changes that are presumed to be additive (but non-breaking), according to commonly observed practices. * `^1.2.3` := `>=1.2.3 <2.0.0-0` * `^0.2.3` := `>=0.2.3 <0.3.0-0` * `^0.0.3` := `>=0.0.3 <0.0.4-0` * `^1.2.3-beta.2` := `>=1.2.3-beta.2 <2.0.0-0` Note that prereleases in the `1.2.3` version will be allowed, if they are greater than or equal to `beta.2`. So, `1.2.3-beta.4` would be allowed, but `1.2.4-beta.2` would not, because it is a prerelease of a different `[major, minor, patch]` tuple. * `^0.0.3-beta` := `>=0.0.3-beta <0.0.4-0` Note that prereleases in the `0.0.3` version *only* will be allowed, if they are greater than or equal to `beta`. So, `0.0.3-pr.2` would be allowed. When parsing caret ranges, a missing `patch` value desugars to the number `0`, but will allow flexibility within that value, even if the major and minor versions are both `0`. * `^1.2.x` := `>=1.2.0 <2.0.0-0` * `^0.0.x` := `>=0.0.0 <0.1.0-0` * `^0.0` := `>=0.0.0 <0.1.0-0` A missing `minor` and `patch` values will desugar to zero, but also allow flexibility within those values, even if the major version is zero. * `^1.x` := `>=1.0.0 <2.0.0-0` * `^0.x` := `>=0.0.0 <1.0.0-0` ### Range Grammar Putting all this together, here is a Backus-Naur grammar for ranges, for the benefit of parser authors: ```bnf range-set ::= range ( logical-or range ) * logical-or ::= ( ' ' ) * '||' ( ' ' ) * range ::= hyphen | simple ( ' ' simple ) * | '' hyphen ::= partial ' - ' partial simple ::= primitive | partial | tilde | caret primitive ::= ( '<' | '>' | '>=' | '<=' | '=' ) partial partial ::= xr ( '.' xr ( '.' xr qualifier ? )? )? xr ::= 'x' | 'X' | '*' | nr nr ::= '0' | ['1'-'9'] ( ['0'-'9'] ) * tilde ::= '~' partial caret ::= '^' partial qualifier ::= ( '-' pre )? ( '+' build )? pre ::= parts build ::= parts parts ::= part ( '.' part ) * part ::= nr | [-0-9A-Za-z]+ ``` ## Functions All methods and classes take a final `options` object argument. All options in this object are `false` by default. The options supported are: - `loose` Be more forgiving about not-quite-valid semver strings. (Any resulting output will always be 100% strict compliant, of course.) For backwards compatibility reasons, if the `options` argument is a boolean value instead of an object, it is interpreted to be the `loose` param. - `includePrerelease` Set to suppress the [default behavior](https://github.com/npm/node-semver#prerelease-tags) of excluding prerelease tagged versions from ranges unless they are explicitly opted into. Strict-mode Comparators and Ranges will be strict about the SemVer strings that they parse. * `valid(v)`: Return the parsed version, or null if it's not valid. * `inc(v, release)`: Return the version incremented by the release type (`major`, `premajor`, `minor`, `preminor`, `patch`, `prepatch`, or `prerelease`), or null if it's not valid * `premajor` in one call will bump the version up to the next major version and down to a prerelease of that major version. `preminor`, and `prepatch` work the same way. * If called from a non-prerelease version, the `prerelease` will work the same as `prepatch`. It increments the patch version, then makes a prerelease. If the input version is already a prerelease it simply increments it. * `prerelease(v)`: Returns an array of prerelease components, or null if none exist. Example: `prerelease('1.2.3-alpha.1') -> ['alpha', 1]` * `major(v)`: Return the major version number. * `minor(v)`: Return the minor version number. * `patch(v)`: Return the patch version number. * `intersects(r1, r2, loose)`: Return true if the two supplied ranges or comparators intersect. * `parse(v)`: Attempt to parse a string as a semantic version, returning either a `SemVer` object or `null`. ### Comparison * `gt(v1, v2)`: `v1 > v2` * `gte(v1, v2)`: `v1 >= v2` * `lt(v1, v2)`: `v1 < v2` * `lte(v1, v2)`: `v1 <= v2` * `eq(v1, v2)`: `v1 == v2` This is true if they're logically equivalent, even if they're not the exact same string. You already know how to compare strings. * `neq(v1, v2)`: `v1 != v2` The opposite of `eq`. * `cmp(v1, comparator, v2)`: Pass in a comparison string, and it'll call the corresponding function above. `"==="` and `"!=="` do simple string comparison, but are included for completeness. Throws if an invalid comparison string is provided. * `compare(v1, v2)`: Return `0` if `v1 == v2`, or `1` if `v1` is greater, or `-1` if `v2` is greater. Sorts in ascending order if passed to `Array.sort()`. * `rcompare(v1, v2)`: The reverse of compare. Sorts an array of versions in descending order when passed to `Array.sort()`. * `compareBuild(v1, v2)`: The same as `compare` but considers `build` when two versions are equal. Sorts in ascending order if passed to `Array.sort()`. `v2` is greater. Sorts in ascending order if passed to `Array.sort()`. * `diff(v1, v2)`: Returns difference between two versions by the release type (`major`, `premajor`, `minor`, `preminor`, `patch`, `prepatch`, or `prerelease`), or null if the versions are the same. ### Comparators * `intersects(comparator)`: Return true if the comparators intersect ### Ranges * `validRange(range)`: Return the valid range or null if it's not valid * `satisfies(version, range)`: Return true if the version satisfies the range. * `maxSatisfying(versions, range)`: Return the highest version in the list that satisfies the range, or `null` if none of them do. * `minSatisfying(versions, range)`: Return the lowest version in the list that satisfies the range, or `null` if none of them do. * `minVersion(range)`: Return the lowest version that can possibly match the given range. * `gtr(version, range)`: Return `true` if version is greater than all the versions possible in the range. * `ltr(version, range)`: Return `true` if version is less than all the versions possible in the range. * `outside(version, range, hilo)`: Return true if the version is outside the bounds of the range in either the high or low direction. The `hilo` argument must be either the string `'>'` or `'<'`. (This is the function called by `gtr` and `ltr`.) * `intersects(range)`: Return true if any of the ranges comparators intersect * `simplifyRange(versions, range)`: Return a "simplified" range that matches the same items in `versions` list as the range specified. Note that it does *not* guarantee that it would match the same versions in all cases, only for the set of versions provided. This is useful when generating ranges by joining together multiple versions with `||` programmatically, to provide the user with something a bit more ergonomic. If the provided range is shorter in string-length than the generated range, then that is returned. * `subset(subRange, superRange)`: Return `true` if the `subRange` range is entirely contained by the `superRange` range. Note that, since ranges may be non-contiguous, a version might not be greater than a range, less than a range, *or* satisfy a range! For example, the range `1.2 <1.2.9 || >2.0.0` would have a hole from `1.2.9` until `2.0.0`, so the version `1.2.10` would not be greater than the range (because `2.0.1` satisfies, which is higher), nor less than the range (since `1.2.8` satisfies, which is lower), and it also does not satisfy the range. If you want to know if a version satisfies or does not satisfy a range, use the `satisfies(version, range)` function. ### Coercion * `coerce(version, options)`: Coerces a string to semver if possible This aims to provide a very forgiving translation of a non-semver string to semver. It looks for the first digit in a string, and consumes all remaining characters which satisfy at least a partial semver (e.g., `1`, `1.2`, `1.2.3`) up to the max permitted length (256 characters). Longer versions are simply truncated (`4.6.3.9.2-alpha2` becomes `4.6.3`). All surrounding text is simply ignored (`v3.4 replaces v3.3.1` becomes `3.4.0`). Only text which lacks digits will fail coercion (`version one` is not valid). The maximum length for any semver component considered for coercion is 16 characters; longer components will be ignored (`10000000000000000.4.7.4` becomes `4.7.4`). The maximum value for any semver component is `Number.MAX_SAFE_INTEGER || (2**53 - 1)`; higher value components are invalid (`9999999999999999.4.7.4` is likely invalid). If the `options.rtl` flag is set, then `coerce` will return the right-most coercible tuple that does not share an ending index with a longer coercible tuple. For example, `1.2.3.4` will return `2.3.4` in rtl mode, not `4.0.0`. `1.2.3/4` will return `4.0.0`, because the `4` is not a part of any other overlapping SemVer tuple. ### Clean * `clean(version)`: Clean a string to be a valid semver if possible This will return a cleaned and trimmed semver version. If the provided version is not valid a null will be returned. This does not work for ranges. ex. * `s.clean(' = v 2.1.5foo')`: `null` * `s.clean(' = v 2.1.5foo', { loose: true })`: `'2.1.5-foo'` * `s.clean(' = v 2.1.5-foo')`: `null` * `s.clean(' = v 2.1.5-foo', { loose: true })`: `'2.1.5-foo'` * `s.clean('=v2.1.5')`: `'2.1.5'` * `s.clean(' =v2.1.5')`: `2.1.5` * `s.clean(' 2.1.5 ')`: `'2.1.5'` * `s.clean('~1.0.0')`: `null` ## Exported Modules <!-- TODO: Make sure that all of these items are documented (classes aren't, eg), and then pull the module name into the documentation for that specific thing. --> You may pull in just the part of this semver utility that you need, if you are sensitive to packing and tree-shaking concerns. The main `require('semver')` export uses getter functions to lazily load the parts of the API that are used. The following modules are available: * `require('semver')` * `require('semver/classes')` * `require('semver/classes/comparator')` * `require('semver/classes/range')` * `require('semver/classes/semver')` * `require('semver/functions/clean')` * `require('semver/functions/cmp')` * `require('semver/functions/coerce')` * `require('semver/functions/compare')` * `require('semver/functions/compare-build')` * `require('semver/functions/compare-loose')` * `require('semver/functions/diff')` * `require('semver/functions/eq')` * `require('semver/functions/gt')` * `require('semver/functions/gte')` * `require('semver/functions/inc')` * `require('semver/functions/lt')` * `require('semver/functions/lte')` * `require('semver/functions/major')` * `require('semver/functions/minor')` * `require('semver/functions/neq')` * `require('semver/functions/parse')` * `require('semver/functions/patch')` * `require('semver/functions/prerelease')` * `require('semver/functions/rcompare')` * `require('semver/functions/rsort')` * `require('semver/functions/satisfies')` * `require('semver/functions/sort')` * `require('semver/functions/valid')` * `require('semver/ranges/gtr')` * `require('semver/ranges/intersects')` * `require('semver/ranges/ltr')` * `require('semver/ranges/max-satisfying')` * `require('semver/ranges/min-satisfying')` * `require('semver/ranges/min-version')` * `require('semver/ranges/outside')` * `require('semver/ranges/to-comparators')` * `require('semver/ranges/valid')` Standard library ================ Standard library components for use with `tsc` (portable) and `asc` (assembly). Base configurations (.json) and definition files (.d.ts) are relevant to `tsc` only and not used by `asc`. # wrappy Callback wrapping utility ## USAGE ```javascript var wrappy = require("wrappy") // var wrapper = wrappy(wrapperFunction) // make sure a cb is called only once // See also: http://npm.im/once for this specific use case var once = wrappy(function (cb) { var called = false return function () { if (called) return called = true return cb.apply(this, arguments) } }) function printBoo () { console.log('boo') } // has some rando property printBoo.iAmBooPrinter = true var onlyPrintOnce = once(printBoo) onlyPrintOnce() // prints 'boo' onlyPrintOnce() // does nothing // random property is retained! assert.equal(onlyPrintOnce.iAmBooPrinter, true) ``` # yargs-parser [](https://travis-ci.org/yargs/yargs-parser) [](https://www.npmjs.com/package/yargs-parser) [](https://github.com/conventional-changelog/standard-version) The mighty option parser used by [yargs](https://github.com/yargs/yargs). visit the [yargs website](http://yargs.js.org/) for more examples, and thorough usage instructions. <img width="250" src="https://raw.githubusercontent.com/yargs/yargs-parser/master/yargs-logo.png"> ## Example ```sh npm i yargs-parser --save ``` ```js var argv = require('yargs-parser')(process.argv.slice(2)) console.log(argv) ``` ```sh node example.js --foo=33 --bar hello { _: [], foo: 33, bar: 'hello' } ``` _or parse a string!_ ```js var argv = require('yargs-parser')('--foo=99 --bar=33') console.log(argv) ``` ```sh { _: [], foo: 99, bar: 33 } ``` Convert an array of mixed types before passing to `yargs-parser`: ```js var parse = require('yargs-parser') parse(['-f', 11, '--zoom', 55].join(' ')) // <-- array to string parse(['-f', 11, '--zoom', 55].map(String)) // <-- array of strings ``` ## API ### require('yargs-parser')(args, opts={}) Parses command line arguments returning a simple mapping of keys and values. **expects:** * `args`: a string or array of strings representing the options to parse. * `opts`: provide a set of hints indicating how `args` should be parsed: * `opts.alias`: an object representing the set of aliases for a key: `{alias: {foo: ['f']}}`. * `opts.array`: indicate that keys should be parsed as an array: `{array: ['foo', 'bar']}`.<br> Indicate that keys should be parsed as an array and coerced to booleans / numbers:<br> `{array: [{ key: 'foo', boolean: true }, {key: 'bar', number: true}]}`. * `opts.boolean`: arguments should be parsed as booleans: `{boolean: ['x', 'y']}`. * `opts.coerce`: provide a custom synchronous function that returns a coerced value from the argument provided (or throws an error). For arrays the function is called only once for the entire array:<br> `{coerce: {foo: function (arg) {return modifiedArg}}}`. * `opts.config`: indicate a key that represents a path to a configuration file (this file will be loaded and parsed). * `opts.configObjects`: configuration objects to parse, their properties will be set as arguments:<br> `{configObjects: [{'x': 5, 'y': 33}, {'z': 44}]}`. * `opts.configuration`: provide configuration options to the yargs-parser (see: [configuration](#configuration)). * `opts.count`: indicate a key that should be used as a counter, e.g., `-vvv` = `{v: 3}`. * `opts.default`: provide default values for keys: `{default: {x: 33, y: 'hello world!'}}`. * `opts.envPrefix`: environment variables (`process.env`) with the prefix provided should be parsed. * `opts.narg`: specify that a key requires `n` arguments: `{narg: {x: 2}}`. * `opts.normalize`: `path.normalize()` will be applied to values set to this key. * `opts.number`: keys should be treated as numbers. * `opts.string`: keys should be treated as strings (even if they resemble a number `-x 33`). **returns:** * `obj`: an object representing the parsed value of `args` * `key/value`: key value pairs for each argument and their aliases. * `_`: an array representing the positional arguments. * [optional] `--`: an array with arguments after the end-of-options flag `--`. ### require('yargs-parser').detailed(args, opts={}) Parses a command line string, returning detailed information required by the yargs engine. **expects:** * `args`: a string or array of strings representing options to parse. * `opts`: provide a set of hints indicating how `args`, inputs are identical to `require('yargs-parser')(args, opts={})`. **returns:** * `argv`: an object representing the parsed value of `args` * `key/value`: key value pairs for each argument and their aliases. * `_`: an array representing the positional arguments. * [optional] `--`: an array with arguments after the end-of-options flag `--`. * `error`: populated with an error object if an exception occurred during parsing. * `aliases`: the inferred list of aliases built by combining lists in `opts.alias`. * `newAliases`: any new aliases added via camel-case expansion: * `boolean`: `{ fooBar: true }` * `defaulted`: any new argument created by `opts.default`, no aliases included. * `boolean`: `{ foo: true }` * `configuration`: given by default settings and `opts.configuration`. <a name="configuration"></a> ### Configuration The yargs-parser applies several automated transformations on the keys provided in `args`. These features can be turned on and off using the `configuration` field of `opts`. ```js var parsed = parser(['--no-dice'], { configuration: { 'boolean-negation': false } }) ``` ### short option groups * default: `true`. * key: `short-option-groups`. Should a group of short-options be treated as boolean flags? ```sh node example.js -abc { _: [], a: true, b: true, c: true } ``` _if disabled:_ ```sh node example.js -abc { _: [], abc: true } ``` ### camel-case expansion * default: `true`. * key: `camel-case-expansion`. Should hyphenated arguments be expanded into camel-case aliases? ```sh node example.js --foo-bar { _: [], 'foo-bar': true, fooBar: true } ``` _if disabled:_ ```sh node example.js --foo-bar { _: [], 'foo-bar': true } ``` ### dot-notation * default: `true` * key: `dot-notation` Should keys that contain `.` be treated as objects? ```sh node example.js --foo.bar { _: [], foo: { bar: true } } ``` _if disabled:_ ```sh node example.js --foo.bar { _: [], "foo.bar": true } ``` ### parse numbers * default: `true` * key: `parse-numbers` Should keys that look like numbers be treated as such? ```sh node example.js --foo=99.3 { _: [], foo: 99.3 } ``` _if disabled:_ ```sh node example.js --foo=99.3 { _: [], foo: "99.3" } ``` ### boolean negation * default: `true` * key: `boolean-negation` Should variables prefixed with `--no` be treated as negations? ```sh node example.js --no-foo { _: [], foo: false } ``` _if disabled:_ ```sh node example.js --no-foo { _: [], "no-foo": true } ``` ### combine arrays * default: `false` * key: `combine-arrays` Should arrays be combined when provided by both command line arguments and a configuration file. ### duplicate arguments array * default: `true` * key: `duplicate-arguments-array` Should arguments be coerced into an array when duplicated: ```sh node example.js -x 1 -x 2 { _: [], x: [1, 2] } ``` _if disabled:_ ```sh node example.js -x 1 -x 2 { _: [], x: 2 } ``` ### flatten duplicate arrays * default: `true` * key: `flatten-duplicate-arrays` Should array arguments be coerced into a single array when duplicated: ```sh node example.js -x 1 2 -x 3 4 { _: [], x: [1, 2, 3, 4] } ``` _if disabled:_ ```sh node example.js -x 1 2 -x 3 4 { _: [], x: [[1, 2], [3, 4]] } ``` ### greedy arrays * default: `true` * key: `greedy-arrays` Should arrays consume more than one positional argument following their flag. ```sh node example --arr 1 2 { _[], arr: [1, 2] } ``` _if disabled:_ ```sh node example --arr 1 2 { _[2], arr: [1] } ``` **Note: in `v18.0.0` we are considering defaulting greedy arrays to `false`.** ### nargs eats options * default: `false` * key: `nargs-eats-options` Should nargs consume dash options as well as positional arguments. ### negation prefix * default: `no-` * key: `negation-prefix` The prefix to use for negated boolean variables. ```sh node example.js --no-foo { _: [], foo: false } ``` _if set to `quux`:_ ```sh node example.js --quuxfoo { _: [], foo: false } ``` ### populate -- * default: `false`. * key: `populate--` Should unparsed flags be stored in `--` or `_`. _If disabled:_ ```sh node example.js a -b -- x y { _: [ 'a', 'x', 'y' ], b: true } ``` _If enabled:_ ```sh node example.js a -b -- x y { _: [ 'a' ], '--': [ 'x', 'y' ], b: true } ``` ### set placeholder key * default: `false`. * key: `set-placeholder-key`. Should a placeholder be added for keys not set via the corresponding CLI argument? _If disabled:_ ```sh node example.js -a 1 -c 2 { _: [], a: 1, c: 2 } ``` _If enabled:_ ```sh node example.js -a 1 -c 2 { _: [], a: 1, b: undefined, c: 2 } ``` ### halt at non-option * default: `false`. * key: `halt-at-non-option`. Should parsing stop at the first positional argument? This is similar to how e.g. `ssh` parses its command line. _If disabled:_ ```sh node example.js -a run b -x y { _: [ 'b' ], a: 'run', x: 'y' } ``` _If enabled:_ ```sh node example.js -a run b -x y { _: [ 'b', '-x', 'y' ], a: 'run' } ``` ### strip aliased * default: `false` * key: `strip-aliased` Should aliases be removed before returning results? _If disabled:_ ```sh node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1, 'test-alias': 1, testAlias: 1 } ``` _If enabled:_ ```sh node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1 } ``` ### strip dashed * default: `false` * key: `strip-dashed` Should dashed keys be removed before returning results? This option has no effect if `camel-case-expansion` is disabled. _If disabled:_ ```sh node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1 } ``` _If enabled:_ ```sh node example.js --test-field 1 { _: [], testField: 1 } ``` ### unknown options as args * default: `false` * key: `unknown-options-as-args` Should unknown options be treated like regular arguments? An unknown option is one that is not configured in `opts`. _If disabled_ ```sh node example.js --unknown-option --known-option 2 --string-option --unknown-option2 { _: [], unknownOption: true, knownOption: 2, stringOption: '', unknownOption2: true } ``` _If enabled_ ```sh node example.js --unknown-option --known-option 2 --string-option --unknown-option2 { _: ['--unknown-option'], knownOption: 2, stringOption: '--unknown-option2' } ``` ## Special Thanks The yargs project evolves from optimist and minimist. It owes its existence to a lot of James Halliday's hard work. Thanks [substack](https://github.com/substack) **beep** **boop** \o/ ## License ISC # require-main-filename [](https://travis-ci.org/yargs/require-main-filename) [](https://coveralls.io/r/yargs/require-main-filename?branch=master) [](https://www.npmjs.com/package/require-main-filename) `require.main.filename` is great for figuring out the entry point for the current application. This can be combined with a module like [pkg-conf](https://www.npmjs.com/package/pkg-conf) to, _as if by magic_, load top-level configuration. Unfortunately, `require.main.filename` sometimes fails when an application is executed with an alternative process manager, e.g., [iisnode](https://github.com/tjanczuk/iisnode). `require-main-filename` is a shim that addresses this problem. ## Usage ```js var main = require('require-main-filename')() // use main as an alternative to require.main.filename. ``` ## License ISC # which-module > Find the module object for something that was require()d [](https://travis-ci.org/nexdrew/which-module) [](https://coveralls.io/github/nexdrew/which-module?branch=master) [](https://github.com/conventional-changelog/standard-version) Find the `module` object in `require.cache` for something that was `require()`d or `import`ed - essentially a reverse `require()` lookup. Useful for libs that want to e.g. lookup a filename for a module or submodule that it did not `require()` itself. ## Install and Usage ``` npm install --save which-module ``` ```js const whichModule = require('which-module') console.log(whichModule(require('something'))) // Module { // id: '/path/to/project/node_modules/something/index.js', // exports: [Function], // parent: ..., // filename: '/path/to/project/node_modules/something/index.js', // loaded: true, // children: [], // paths: [ '/path/to/project/node_modules/something/node_modules', // '/path/to/project/node_modules', // '/path/to/node_modules', // '/path/node_modules', // '/node_modules' ] } ``` ## API ### `whichModule(exported)` Return the [`module` object](https://nodejs.org/api/modules.html#modules_the_module_object), if any, that represents the given argument in the `require.cache`. `exported` can be anything that was previously `require()`d or `import`ed as a module, submodule, or dependency - which means `exported` is identical to the `module.exports` returned by this method. If `exported` did not come from the `exports` of a `module` in `require.cache`, then this method returns `null`. ## License ISC © Contributors # is-glob [](https://www.npmjs.com/package/is-glob) [](https://npmjs.org/package/is-glob) [](https://npmjs.org/package/is-glob) [](https://github.com/micromatch/is-glob/actions) > Returns `true` if the given string looks like a glob pattern or an extglob pattern. This makes it easy to create code that only uses external modules like node-glob when necessary, resulting in much faster code execution and initialization time, and a better user experience. Please consider following this project's author, [Jon Schlinkert](https://github.com/jonschlinkert), and consider starring the project to show your :heart: and support. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save is-glob ``` You might also be interested in [is-valid-glob](https://github.com/jonschlinkert/is-valid-glob) and [has-glob](https://github.com/jonschlinkert/has-glob). ## Usage ```js var isGlob = require('is-glob'); ``` ### Default behavior **True** Patterns that have glob characters or regex patterns will return `true`: ```js isGlob('!foo.js'); isGlob('*.js'); isGlob('**/abc.js'); isGlob('abc/*.js'); isGlob('abc/(aaa|bbb).js'); isGlob('abc/[a-z].js'); isGlob('abc/{a,b}.js'); //=> true ``` Extglobs ```js isGlob('abc/@(a).js'); isGlob('abc/!(a).js'); isGlob('abc/+(a).js'); isGlob('abc/*(a).js'); isGlob('abc/?(a).js'); //=> true ``` **False** Escaped globs or extglobs return `false`: ```js isGlob('abc/\\@(a).js'); isGlob('abc/\\!(a).js'); isGlob('abc/\\+(a).js'); isGlob('abc/\\*(a).js'); isGlob('abc/\\?(a).js'); isGlob('\\!foo.js'); isGlob('\\*.js'); isGlob('\\*\\*/abc.js'); isGlob('abc/\\*.js'); isGlob('abc/\\(aaa|bbb).js'); isGlob('abc/\\[a-z].js'); isGlob('abc/\\{a,b}.js'); //=> false ``` Patterns that do not have glob patterns return `false`: ```js isGlob('abc.js'); isGlob('abc/def/ghi.js'); isGlob('foo.js'); isGlob('abc/@.js'); isGlob('abc/+.js'); isGlob('abc/?.js'); isGlob(); isGlob(null); //=> false ``` Arrays are also `false` (If you want to check if an array has a glob pattern, use [has-glob](https://github.com/jonschlinkert/has-glob)): ```js isGlob(['**/*.js']); isGlob(['foo.js']); //=> false ``` ### Option strict When `options.strict === false` the behavior is less strict in determining if a pattern is a glob. Meaning that some patterns that would return `false` may return `true`. This is done so that matching libraries like [micromatch](https://github.com/micromatch/micromatch) have a chance at determining if the pattern is a glob or not. **True** Patterns that have glob characters or regex patterns will return `true`: ```js isGlob('!foo.js', {strict: false}); isGlob('*.js', {strict: false}); isGlob('**/abc.js', {strict: false}); isGlob('abc/*.js', {strict: false}); isGlob('abc/(aaa|bbb).js', {strict: false}); isGlob('abc/[a-z].js', {strict: false}); isGlob('abc/{a,b}.js', {strict: false}); //=> true ``` Extglobs ```js isGlob('abc/@(a).js', {strict: false}); isGlob('abc/!(a).js', {strict: false}); isGlob('abc/+(a).js', {strict: false}); isGlob('abc/*(a).js', {strict: false}); isGlob('abc/?(a).js', {strict: false}); //=> true ``` **False** Escaped globs or extglobs return `false`: ```js isGlob('\\!foo.js', {strict: false}); isGlob('\\*.js', {strict: false}); isGlob('\\*\\*/abc.js', {strict: false}); isGlob('abc/\\*.js', {strict: false}); isGlob('abc/\\(aaa|bbb).js', {strict: false}); isGlob('abc/\\[a-z].js', {strict: false}); isGlob('abc/\\{a,b}.js', {strict: false}); //=> false ``` ## About <details> <summary><strong>Contributing</strong></summary> Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). </details> <details> <summary><strong>Running Tests</strong></summary> Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` </details> <details> <summary><strong>Building docs</strong></summary> _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` </details> ### Related projects You might also be interested in these projects: * [assemble](https://www.npmjs.com/package/assemble): Get the rocks out of your socks! Assemble makes you fast at creating web projects… [more](https://github.com/assemble/assemble) | [homepage](https://github.com/assemble/assemble "Get the rocks out of your socks! Assemble makes you fast at creating web projects. Assemble is used by thousands of projects for rapid prototyping, creating themes, scaffolds, boilerplates, e-books, UI components, API documentation, blogs, building websit") * [base](https://www.npmjs.com/package/base): Framework for rapidly creating high quality, server-side node.js applications, using plugins like building blocks | [homepage](https://github.com/node-base/base "Framework for rapidly creating high quality, server-side node.js applications, using plugins like building blocks") * [update](https://www.npmjs.com/package/update): Be scalable! Update is a new, open source developer framework and CLI for automating updates… [more](https://github.com/update/update) | [homepage](https://github.com/update/update "Be scalable! Update is a new, open source developer framework and CLI for automating updates of any kind in code projects.") * [verb](https://www.npmjs.com/package/verb): Documentation generator for GitHub projects. Verb is extremely powerful, easy to use, and is used… [more](https://github.com/verbose/verb) | [homepage](https://github.com/verbose/verb "Documentation generator for GitHub projects. Verb is extremely powerful, easy to use, and is used on hundreds of projects of all sizes to generate everything from API docs to readmes.") ### Contributors | **Commits** | **Contributor** | | --- | --- | | 47 | [jonschlinkert](https://github.com/jonschlinkert) | | 5 | [doowb](https://github.com/doowb) | | 1 | [phated](https://github.com/phated) | | 1 | [danhper](https://github.com/danhper) | | 1 | [paulmillr](https://github.com/paulmillr) | ### Author **Jon Schlinkert** * [GitHub Profile](https://github.com/jonschlinkert) * [Twitter Profile](https://twitter.com/jonschlinkert) * [LinkedIn Profile](https://linkedin.com/in/jonschlinkert) ### License Copyright © 2019, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT License](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.8.0, on March 27, 2019._ # Visitor utilities for AssemblyScript Compiler transformers ## Example ### List Fields The transformer: ```ts import { ClassDeclaration, FieldDeclaration, MethodDeclaration, } from "../../as"; import { ClassDecorator, registerDecorator } from "../decorator"; import { toString } from "../utils"; class ListMembers extends ClassDecorator { visitFieldDeclaration(node: FieldDeclaration): void { if (!node.name) console.log(toString(node) + "\n"); const name = toString(node.name); const _type = toString(node.type!); this.stdout.write(name + ": " + _type + "\n"); } visitMethodDeclaration(node: MethodDeclaration): void { const name = toString(node.name); if (name == "constructor") { return; } const sig = toString(node.signature); this.stdout.write(name + ": " + sig + "\n"); } visitClassDeclaration(node: ClassDeclaration): void { this.visit(node.members); } get name(): string { return "list"; } } export = registerDecorator(new ListMembers()); ``` assembly/foo.ts: ```ts @list class Foo { a: u8; b: bool; i: i32; } ``` And then compile with `--transform` flag: ``` asc assembly/foo.ts --transform ./dist/examples/list --noEmit ``` Which prints the following to the console: ``` a: u8 b: bool i: i32 ``` A JSON with color names and its values. Based on http://dev.w3.org/csswg/css-color/#named-colors. [](https://nodei.co/npm/color-name/) ```js var colors = require('color-name'); colors.red //[255,0,0] ``` <a href="LICENSE"><img src="https://upload.wikimedia.org/wikipedia/commons/0/0c/MIT_logo.svg" width="120"/></a> long.js ======= A Long class for representing a 64 bit two's-complement integer value derived from the [Closure Library](https://github.com/google/closure-library) for stand-alone use and extended with unsigned support. [](https://travis-ci.org/dcodeIO/long.js) Background ---------- As of [ECMA-262 5th Edition](http://ecma262-5.com/ELS5_HTML.htm#Section_8.5), "all the positive and negative integers whose magnitude is no greater than 2<sup>53</sup> are representable in the Number type", which is "representing the doubleprecision 64-bit format IEEE 754 values as specified in the IEEE Standard for Binary Floating-Point Arithmetic". The [maximum safe integer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER) in JavaScript is 2<sup>53</sup>-1. Example: 2<sup>64</sup>-1 is 1844674407370955**1615** but in JavaScript it evaluates to 1844674407370955**2000**. Furthermore, bitwise operators in JavaScript "deal only with integers in the range −2<sup>31</sup> through 2<sup>31</sup>−1, inclusive, or in the range 0 through 2<sup>32</sup>−1, inclusive. These operators accept any value of the Number type but first convert each such value to one of 2<sup>32</sup> integer values." In some use cases, however, it is required to be able to reliably work with and perform bitwise operations on the full 64 bits. This is where long.js comes into play. Usage ----- The class is compatible with CommonJS and AMD loaders and is exposed globally as `Long` if neither is available. ```javascript var Long = require("long"); var longVal = new Long(0xFFFFFFFF, 0x7FFFFFFF); console.log(longVal.toString()); ... ``` API --- ### Constructor * new **Long**(low: `number`, high: `number`, unsigned?: `boolean`)<br /> Constructs a 64 bit two's-complement integer, given its low and high 32 bit values as *signed* integers. See the from* functions below for more convenient ways of constructing Longs. ### Fields * Long#**low**: `number`<br /> The low 32 bits as a signed value. * Long#**high**: `number`<br /> The high 32 bits as a signed value. * Long#**unsigned**: `boolean`<br /> Whether unsigned or not. ### Constants * Long.**ZERO**: `Long`<br /> Signed zero. * Long.**ONE**: `Long`<br /> Signed one. * Long.**NEG_ONE**: `Long`<br /> Signed negative one. * Long.**UZERO**: `Long`<br /> Unsigned zero. * Long.**UONE**: `Long`<br /> Unsigned one. * Long.**MAX_VALUE**: `Long`<br /> Maximum signed value. * Long.**MIN_VALUE**: `Long`<br /> Minimum signed value. * Long.**MAX_UNSIGNED_VALUE**: `Long`<br /> Maximum unsigned value. ### Utility * Long.**isLong**(obj: `*`): `boolean`<br /> Tests if the specified object is a Long. * Long.**fromBits**(lowBits: `number`, highBits: `number`, unsigned?: `boolean`): `Long`<br /> Returns a Long representing the 64 bit integer that comes by concatenating the given low and high bits. Each is assumed to use 32 bits. * Long.**fromBytes**(bytes: `number[]`, unsigned?: `boolean`, le?: `boolean`): `Long`<br /> Creates a Long from its byte representation. * Long.**fromBytesLE**(bytes: `number[]`, unsigned?: `boolean`): `Long`<br /> Creates a Long from its little endian byte representation. * Long.**fromBytesBE**(bytes: `number[]`, unsigned?: `boolean`): `Long`<br /> Creates a Long from its big endian byte representation. * Long.**fromInt**(value: `number`, unsigned?: `boolean`): `Long`<br /> Returns a Long representing the given 32 bit integer value. * Long.**fromNumber**(value: `number`, unsigned?: `boolean`): `Long`<br /> Returns a Long representing the given value, provided that it is a finite number. Otherwise, zero is returned. * Long.**fromString**(str: `string`, unsigned?: `boolean`, radix?: `number`)<br /> Long.**fromString**(str: `string`, radix: `number`)<br /> Returns a Long representation of the given string, written using the specified radix. * Long.**fromValue**(val: `*`, unsigned?: `boolean`): `Long`<br /> Converts the specified value to a Long using the appropriate from* function for its type. ### Methods * Long#**add**(addend: `Long | number | string`): `Long`<br /> Returns the sum of this and the specified Long. * Long#**and**(other: `Long | number | string`): `Long`<br /> Returns the bitwise AND of this Long and the specified. * Long#**compare**/**comp**(other: `Long | number | string`): `number`<br /> Compares this Long's value with the specified's. Returns `0` if they are the same, `1` if the this is greater and `-1` if the given one is greater. * Long#**divide**/**div**(divisor: `Long | number | string`): `Long`<br /> Returns this Long divided by the specified. * Long#**equals**/**eq**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value equals the specified's. * Long#**getHighBits**(): `number`<br /> Gets the high 32 bits as a signed integer. * Long#**getHighBitsUnsigned**(): `number`<br /> Gets the high 32 bits as an unsigned integer. * Long#**getLowBits**(): `number`<br /> Gets the low 32 bits as a signed integer. * Long#**getLowBitsUnsigned**(): `number`<br /> Gets the low 32 bits as an unsigned integer. * Long#**getNumBitsAbs**(): `number`<br /> Gets the number of bits needed to represent the absolute value of this Long. * Long#**greaterThan**/**gt**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value is greater than the specified's. * Long#**greaterThanOrEqual**/**gte**/**ge**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value is greater than or equal the specified's. * Long#**isEven**(): `boolean`<br /> Tests if this Long's value is even. * Long#**isNegative**(): `boolean`<br /> Tests if this Long's value is negative. * Long#**isOdd**(): `boolean`<br /> Tests if this Long's value is odd. * Long#**isPositive**(): `boolean`<br /> Tests if this Long's value is positive. * Long#**isZero**/**eqz**(): `boolean`<br /> Tests if this Long's value equals zero. * Long#**lessThan**/**lt**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value is less than the specified's. * Long#**lessThanOrEqual**/**lte**/**le**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value is less than or equal the specified's. * Long#**modulo**/**mod**/**rem**(divisor: `Long | number | string`): `Long`<br /> Returns this Long modulo the specified. * Long#**multiply**/**mul**(multiplier: `Long | number | string`): `Long`<br /> Returns the product of this and the specified Long. * Long#**negate**/**neg**(): `Long`<br /> Negates this Long's value. * Long#**not**(): `Long`<br /> Returns the bitwise NOT of this Long. * Long#**notEquals**/**neq**/**ne**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value differs from the specified's. * Long#**or**(other: `Long | number | string`): `Long`<br /> Returns the bitwise OR of this Long and the specified. * Long#**shiftLeft**/**shl**(numBits: `Long | number | string`): `Long`<br /> Returns this Long with bits shifted to the left by the given amount. * Long#**shiftRight**/**shr**(numBits: `Long | number | string`): `Long`<br /> Returns this Long with bits arithmetically shifted to the right by the given amount. * Long#**shiftRightUnsigned**/**shru**/**shr_u**(numBits: `Long | number | string`): `Long`<br /> Returns this Long with bits logically shifted to the right by the given amount. * Long#**subtract**/**sub**(subtrahend: `Long | number | string`): `Long`<br /> Returns the difference of this and the specified Long. * Long#**toBytes**(le?: `boolean`): `number[]`<br /> Converts this Long to its byte representation. * Long#**toBytesLE**(): `number[]`<br /> Converts this Long to its little endian byte representation. * Long#**toBytesBE**(): `number[]`<br /> Converts this Long to its big endian byte representation. * Long#**toInt**(): `number`<br /> Converts the Long to a 32 bit integer, assuming it is a 32 bit integer. * Long#**toNumber**(): `number`<br /> Converts the Long to a the nearest floating-point representation of this value (double, 53 bit mantissa). * Long#**toSigned**(): `Long`<br /> Converts this Long to signed. * Long#**toString**(radix?: `number`): `string`<br /> Converts the Long to a string written in the specified radix. * Long#**toUnsigned**(): `Long`<br /> Converts this Long to unsigned. * Long#**xor**(other: `Long | number | string`): `Long`<br /> Returns the bitwise XOR of this Long and the given one. Building -------- To build an UMD bundle to `dist/long.js`, run: ``` $> npm install $> npm run build ``` Running the [tests](./tests): ``` $> npm test ``` # node-tar [](https://travis-ci.org/npm/node-tar) [Fast](./benchmarks) and full-featured Tar for Node.js The API is designed to mimic the behavior of `tar(1)` on unix systems. If you are familiar with how tar works, most of this will hopefully be straightforward for you. If not, then hopefully this module can teach you useful unix skills that may come in handy someday :) ## Background A "tar file" or "tarball" is an archive of file system entries (directories, files, links, etc.) The name comes from "tape archive". If you run `man tar` on almost any Unix command line, you'll learn quite a bit about what it can do, and its history. Tar has 5 main top-level commands: * `c` Create an archive * `r` Replace entries within an archive * `u` Update entries within an archive (ie, replace if they're newer) * `t` List out the contents of an archive * `x` Extract an archive to disk The other flags and options modify how this top level function works. ## High-Level API These 5 functions are the high-level API. All of them have a single-character name (for unix nerds familiar with `tar(1)`) as well as a long name (for everyone else). All the high-level functions take the following arguments, all three of which are optional and may be omitted. 1. `options` - An optional object specifying various options 2. `paths` - An array of paths to add or extract 3. `callback` - Called when the command is completed, if async. (If sync or no file specified, providing a callback throws a `TypeError`.) If the command is sync (ie, if `options.sync=true`), then the callback is not allowed, since the action will be completed immediately. If a `file` argument is specified, and the command is async, then a `Promise` is returned. In this case, if async, a callback may be provided which is called when the command is completed. If a `file` option is not specified, then a stream is returned. For `create`, this is a readable stream of the generated archive. For `list` and `extract` this is a writable stream that an archive should be written into. If a file is not specified, then a callback is not allowed, because you're already getting a stream to work with. `replace` and `update` only work on existing archives, and so require a `file` argument. Sync commands without a file argument return a stream that acts on its input immediately in the same tick. For readable streams, this means that all of the data is immediately available by calling `stream.read()`. For writable streams, it will be acted upon as soon as it is provided, but this can be at any time. ### Warnings and Errors Tar emits warnings and errors for recoverable and unrecoverable situations, respectively. In many cases, a warning only affects a single entry in an archive, or is simply informing you that it's modifying an entry to comply with the settings provided. Unrecoverable warnings will always raise an error (ie, emit `'error'` on streaming actions, throw for non-streaming sync actions, reject the returned Promise for non-streaming async operations, or call a provided callback with an `Error` as the first argument). Recoverable errors will raise an error only if `strict: true` is set in the options. Respond to (recoverable) warnings by listening to the `warn` event. Handlers receive 3 arguments: - `code` String. One of the error codes below. This may not match `data.code`, which preserves the original error code from fs and zlib. - `message` String. More details about the error. - `data` Metadata about the error. An `Error` object for errors raised by fs and zlib. All fields are attached to errors raisd by tar. Typically contains the following fields, as relevant: - `tarCode` The tar error code. - `code` Either the tar error code, or the error code set by the underlying system. - `file` The archive file being read or written. - `cwd` Working directory for creation and extraction operations. - `entry` The entry object (if it could be created) for `TAR_ENTRY_INFO`, `TAR_ENTRY_INVALID`, and `TAR_ENTRY_ERROR` warnings. - `header` The header object (if it could be created, and the entry could not be created) for `TAR_ENTRY_INFO` and `TAR_ENTRY_INVALID` warnings. - `recoverable` Boolean. If `false`, then the warning will emit an `error`, even in non-strict mode. #### Error Codes * `TAR_ENTRY_INFO` An informative error indicating that an entry is being modified, but otherwise processed normally. For example, removing `/` or `C:\` from absolute paths if `preservePaths` is not set. * `TAR_ENTRY_INVALID` An indication that a given entry is not a valid tar archive entry, and will be skipped. This occurs when: - a checksum fails, - a `linkpath` is missing for a link type, or - a `linkpath` is provided for a non-link type. If every entry in a parsed archive raises an `TAR_ENTRY_INVALID` error, then the archive is presumed to be unrecoverably broken, and `TAR_BAD_ARCHIVE` will be raised. * `TAR_ENTRY_ERROR` The entry appears to be a valid tar archive entry, but encountered an error which prevented it from being unpacked. This occurs when: - an unrecoverable fs error happens during unpacking, - an entry has `..` in the path and `preservePaths` is not set, or - an entry is extracting through a symbolic link, when `preservePaths` is not set. * `TAR_ENTRY_UNSUPPORTED` An indication that a given entry is a valid archive entry, but of a type that is unsupported, and so will be skipped in archive creation or extracting. * `TAR_ABORT` When parsing gzipped-encoded archives, the parser will abort the parse process raise a warning for any zlib errors encountered. Aborts are considered unrecoverable for both parsing and unpacking. * `TAR_BAD_ARCHIVE` The archive file is totally hosed. This can happen for a number of reasons, and always occurs at the end of a parse or extract: - An entry body was truncated before seeing the full number of bytes. - The archive contained only invalid entries, indicating that it is likely not an archive, or at least, not an archive this library can parse. `TAR_BAD_ARCHIVE` is considered informative for parse operations, but unrecoverable for extraction. Note that, if encountered at the end of an extraction, tar WILL still have extracted as much it could from the archive, so there may be some garbage files to clean up. Errors that occur deeper in the system (ie, either the filesystem or zlib) will have their error codes left intact, and a `tarCode` matching one of the above will be added to the warning metadata or the raised error object. Errors generated by tar will have one of the above codes set as the `error.code` field as well, but since errors originating in zlib or fs will have their original codes, it's better to read `error.tarCode` if you wish to see how tar is handling the issue. ### Examples The API mimics the `tar(1)` command line functionality, with aliases for more human-readable option and function names. The goal is that if you know how to use `tar(1)` in Unix, then you know how to use `require('tar')` in JavaScript. To replicate `tar czf my-tarball.tgz files and folders`, you'd do: ```js tar.c( { gzip: <true|gzip options>, file: 'my-tarball.tgz' }, ['some', 'files', 'and', 'folders'] ).then(_ => { .. tarball has been created .. }) ``` To replicate `tar cz files and folders > my-tarball.tgz`, you'd do: ```js tar.c( // or tar.create { gzip: <true|gzip options> }, ['some', 'files', 'and', 'folders'] ).pipe(fs.createWriteStream('my-tarball.tgz')) ``` To replicate `tar xf my-tarball.tgz` you'd do: ```js tar.x( // or tar.extract( { file: 'my-tarball.tgz' } ).then(_=> { .. tarball has been dumped in cwd .. }) ``` To replicate `cat my-tarball.tgz | tar x -C some-dir --strip=1`: ```js fs.createReadStream('my-tarball.tgz').pipe( tar.x({ strip: 1, C: 'some-dir' // alias for cwd:'some-dir', also ok }) ) ``` To replicate `tar tf my-tarball.tgz`, do this: ```js tar.t({ file: 'my-tarball.tgz', onentry: entry => { .. do whatever with it .. } }) ``` To replicate `cat my-tarball.tgz | tar t` do: ```js fs.createReadStream('my-tarball.tgz') .pipe(tar.t()) .on('entry', entry => { .. do whatever with it .. }) ``` To do anything synchronous, add `sync: true` to the options. Note that sync functions don't take a callback and don't return a promise. When the function returns, it's already done. Sync methods without a file argument return a sync stream, which flushes immediately. But, of course, it still won't be done until you `.end()` it. To filter entries, add `filter: <function>` to the options. Tar-creating methods call the filter with `filter(path, stat)`. Tar-reading methods (including extraction) call the filter with `filter(path, entry)`. The filter is called in the `this`-context of the `Pack` or `Unpack` stream object. The arguments list to `tar t` and `tar x` specify a list of filenames to extract or list, so they're equivalent to a filter that tests if the file is in the list. For those who _aren't_ fans of tar's single-character command names: ``` tar.c === tar.create tar.r === tar.replace (appends to archive, file is required) tar.u === tar.update (appends if newer, file is required) tar.x === tar.extract tar.t === tar.list ``` Keep reading for all the command descriptions and options, as well as the low-level API that they are built on. ### tar.c(options, fileList, callback) [alias: tar.create] Create a tarball archive. The `fileList` is an array of paths to add to the tarball. Adding a directory also adds its children recursively. An entry in `fileList` that starts with an `@` symbol is a tar archive whose entries will be added. To add a file that starts with `@`, prepend it with `./`. The following options are supported: - `file` Write the tarball archive to the specified filename. If this is specified, then the callback will be fired when the file has been written, and a promise will be returned that resolves when the file is written. If a filename is not specified, then a Readable Stream will be returned which will emit the file data. [Alias: `f`] - `sync` Act synchronously. If this is set, then any provided file will be fully written after the call to `tar.c`. If this is set, and a file is not provided, then the resulting stream will already have the data ready to `read` or `emit('data')` as soon as you request it. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `strict` Treat warnings as crash-worthy errors. Default false. - `cwd` The current working directory for creating the archive. Defaults to `process.cwd()`. [Alias: `C`] - `prefix` A path portion to prefix onto the entries in the archive. - `gzip` Set to any truthy value to create a gzipped archive, or an object with settings for `zlib.Gzip()` [Alias: `z`] - `filter` A function that gets called with `(path, stat)` for each entry being added. Return `true` to add the entry to the archive, or `false` to omit it. - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. [Alias: `P`] - `mode` The mode to set on the created file archive - `noDirRecurse` Do not recursively archive the contents of directories. [Alias: `n`] - `follow` Set to true to pack the targets of symbolic links. Without this option, symbolic links are archived as such. [Alias: `L`, `h`] - `noPax` Suppress pax extended headers. Note that this means that long paths and linkpaths will be truncated, and large or negative numeric values may be interpreted incorrectly. - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. [Alias: `m`, `no-mtime`] - `mtime` Set to a `Date` object to force a specific `mtime` for everything added to the archive. Overridden by `noMtime`. The following options are mostly internal, but can be modified in some advanced use cases, such as re-using caches between runs. - `linkCache` A Map object containing the device and inode value for any file whose nlink is > 1, to identify hard links. - `statCache` A Map object that caches calls `lstat`. - `readdirCache` A Map object that caches calls to `readdir`. - `jobs` A number specifying how many concurrent jobs to run. Defaults to 4. - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 16 MB. ### tar.x(options, fileList, callback) [alias: tar.extract] Extract a tarball archive. The `fileList` is an array of paths to extract from the tarball. If no paths are provided, then all the entries are extracted. If the archive is gzipped, then tar will detect this and unzip it. Note that all directories that are created will be forced to be writable, readable, and listable by their owner, to avoid cases where a directory prevents extraction of child entries by virtue of its mode. Most extraction errors will cause a `warn` event to be emitted. If the `cwd` is missing, or not a directory, then the extraction will fail completely. The following options are supported: - `cwd` Extract files relative to the specified directory. Defaults to `process.cwd()`. If provided, this must exist and must be a directory. [Alias: `C`] - `file` The archive file to extract. If not specified, then a Writable stream is returned where the archive data should be written. [Alias: `f`] - `sync` Create files and directories synchronously. - `strict` Treat warnings as crash-worthy errors. Default false. - `filter` A function that gets called with `(path, entry)` for each entry being unpacked. Return `true` to unpack the entry from the archive, or `false` to skip it. - `newer` Set to true to keep the existing file on disk if it's newer than the file in the archive. [Alias: `keep-newer`, `keep-newer-files`] - `keep` Do not overwrite existing files. In particular, if a file appears more than once in an archive, later copies will not overwrite earlier copies. [Alias: `k`, `keep-existing`] - `preservePaths` Allow absolute paths, paths containing `..`, and extracting through symbolic links. By default, `/` is stripped from absolute paths, `..` paths are not extracted, and any file whose location would be modified by a symbolic link is not extracted. [Alias: `P`] - `unlink` Unlink files before creating them. Without this option, tar overwrites existing files, which preserves existing hardlinks. With this option, existing hardlinks will be broken, as will any symlink that would affect the location of an extracted file. [Alias: `U`] - `strip` Remove the specified number of leading path elements. Pathnames with fewer elements will be silently skipped. Note that the pathname is edited after applying the filter, but before security checks. [Alias: `strip-components`, `stripComponents`] - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `preserveOwner` If true, tar will set the `uid` and `gid` of extracted entries to the `uid` and `gid` fields in the archive. This defaults to true when run as root, and false otherwise. If false, then files and directories will be set with the owner and group of the user running the process. This is similar to `-p` in `tar(1)`, but ACLs and other system-specific data is never unpacked in this implementation, and modes are set by default already. [Alias: `p`] - `uid` Set to a number to force ownership of all extracted files and folders, and all implicitly created directories, to be owned by the specified user id, regardless of the `uid` field in the archive. Cannot be used along with `preserveOwner`. Requires also setting a `gid` option. - `gid` Set to a number to force ownership of all extracted files and folders, and all implicitly created directories, to be owned by the specified group id, regardless of the `gid` field in the archive. Cannot be used along with `preserveOwner`. Requires also setting a `uid` option. - `noMtime` Set to true to omit writing `mtime` value for extracted entries. [Alias: `m`, `no-mtime`] - `transform` Provide a function that takes an `entry` object, and returns a stream, or any falsey value. If a stream is provided, then that stream's data will be written instead of the contents of the archive entry. If a falsey value is provided, then the entry is written to disk as normal. (To exclude items from extraction, use the `filter` option described above.) - `onentry` A function that gets called with `(entry)` for each entry that passes the filter. The following options are mostly internal, but can be modified in some advanced use cases, such as re-using caches between runs. - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 16 MB. - `umask` Filter the modes of entries like `process.umask()`. - `dmode` Default mode for directories - `fmode` Default mode for files - `dirCache` A Map object of which directories exist. - `maxMetaEntrySize` The maximum size of meta entries that is supported. Defaults to 1 MB. Note that using an asynchronous stream type with the `transform` option will cause undefined behavior in sync extractions. [MiniPass](http://npm.im/minipass)-based streams are designed for this use case. ### tar.t(options, fileList, callback) [alias: tar.list] List the contents of a tarball archive. The `fileList` is an array of paths to list from the tarball. If no paths are provided, then all the entries are listed. If the archive is gzipped, then tar will detect this and unzip it. Returns an event emitter that emits `entry` events with `tar.ReadEntry` objects. However, they don't emit `'data'` or `'end'` events. (If you want to get actual readable entries, use the `tar.Parse` class instead.) The following options are supported: - `cwd` Extract files relative to the specified directory. Defaults to `process.cwd()`. [Alias: `C`] - `file` The archive file to list. If not specified, then a Writable stream is returned where the archive data should be written. [Alias: `f`] - `sync` Read the specified file synchronously. (This has no effect when a file option isn't specified, because entries are emitted as fast as they are parsed from the stream anyway.) - `strict` Treat warnings as crash-worthy errors. Default false. - `filter` A function that gets called with `(path, entry)` for each entry being listed. Return `true` to emit the entry from the archive, or `false` to skip it. - `onentry` A function that gets called with `(entry)` for each entry that passes the filter. This is important for when both `file` and `sync` are set, because it will be called synchronously. - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 16 MB. - `noResume` By default, `entry` streams are resumed immediately after the call to `onentry`. Set `noResume: true` to suppress this behavior. Note that by opting into this, the stream will never complete until the entry data is consumed. ### tar.u(options, fileList, callback) [alias: tar.update] Add files to an archive if they are newer than the entry already in the tarball archive. The `fileList` is an array of paths to add to the tarball. Adding a directory also adds its children recursively. An entry in `fileList` that starts with an `@` symbol is a tar archive whose entries will be added. To add a file that starts with `@`, prepend it with `./`. The following options are supported: - `file` Required. Write the tarball archive to the specified filename. [Alias: `f`] - `sync` Act synchronously. If this is set, then any provided file will be fully written after the call to `tar.c`. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `strict` Treat warnings as crash-worthy errors. Default false. - `cwd` The current working directory for adding entries to the archive. Defaults to `process.cwd()`. [Alias: `C`] - `prefix` A path portion to prefix onto the entries in the archive. - `gzip` Set to any truthy value to create a gzipped archive, or an object with settings for `zlib.Gzip()` [Alias: `z`] - `filter` A function that gets called with `(path, stat)` for each entry being added. Return `true` to add the entry to the archive, or `false` to omit it. - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. [Alias: `P`] - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 16 MB. - `noDirRecurse` Do not recursively archive the contents of directories. [Alias: `n`] - `follow` Set to true to pack the targets of symbolic links. Without this option, symbolic links are archived as such. [Alias: `L`, `h`] - `noPax` Suppress pax extended headers. Note that this means that long paths and linkpaths will be truncated, and large or negative numeric values may be interpreted incorrectly. - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. [Alias: `m`, `no-mtime`] - `mtime` Set to a `Date` object to force a specific `mtime` for everything added to the archive. Overridden by `noMtime`. ### tar.r(options, fileList, callback) [alias: tar.replace] Add files to an existing archive. Because later entries override earlier entries, this effectively replaces any existing entries. The `fileList` is an array of paths to add to the tarball. Adding a directory also adds its children recursively. An entry in `fileList` that starts with an `@` symbol is a tar archive whose entries will be added. To add a file that starts with `@`, prepend it with `./`. The following options are supported: - `file` Required. Write the tarball archive to the specified filename. [Alias: `f`] - `sync` Act synchronously. If this is set, then any provided file will be fully written after the call to `tar.c`. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `strict` Treat warnings as crash-worthy errors. Default false. - `cwd` The current working directory for adding entries to the archive. Defaults to `process.cwd()`. [Alias: `C`] - `prefix` A path portion to prefix onto the entries in the archive. - `gzip` Set to any truthy value to create a gzipped archive, or an object with settings for `zlib.Gzip()` [Alias: `z`] - `filter` A function that gets called with `(path, stat)` for each entry being added. Return `true` to add the entry to the archive, or `false` to omit it. - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. [Alias: `P`] - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 16 MB. - `noDirRecurse` Do not recursively archive the contents of directories. [Alias: `n`] - `follow` Set to true to pack the targets of symbolic links. Without this option, symbolic links are archived as such. [Alias: `L`, `h`] - `noPax` Suppress pax extended headers. Note that this means that long paths and linkpaths will be truncated, and large or negative numeric values may be interpreted incorrectly. - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. [Alias: `m`, `no-mtime`] - `mtime` Set to a `Date` object to force a specific `mtime` for everything added to the archive. Overridden by `noMtime`. ## Low-Level API ### class tar.Pack A readable tar stream. Has all the standard readable stream interface stuff. `'data'` and `'end'` events, `read()` method, `pause()` and `resume()`, etc. #### constructor(options) The following options are supported: - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `strict` Treat warnings as crash-worthy errors. Default false. - `cwd` The current working directory for creating the archive. Defaults to `process.cwd()`. - `prefix` A path portion to prefix onto the entries in the archive. - `gzip` Set to any truthy value to create a gzipped archive, or an object with settings for `zlib.Gzip()` - `filter` A function that gets called with `(path, stat)` for each entry being added. Return `true` to add the entry to the archive, or `false` to omit it. - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. - `linkCache` A Map object containing the device and inode value for any file whose nlink is > 1, to identify hard links. - `statCache` A Map object that caches calls `lstat`. - `readdirCache` A Map object that caches calls to `readdir`. - `jobs` A number specifying how many concurrent jobs to run. Defaults to 4. - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 16 MB. - `noDirRecurse` Do not recursively archive the contents of directories. - `follow` Set to true to pack the targets of symbolic links. Without this option, symbolic links are archived as such. - `noPax` Suppress pax extended headers. Note that this means that long paths and linkpaths will be truncated, and large or negative numeric values may be interpreted incorrectly. - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. - `mtime` Set to a `Date` object to force a specific `mtime` for everything added to the archive. Overridden by `noMtime`. #### add(path) Adds an entry to the archive. Returns the Pack stream. #### write(path) Adds an entry to the archive. Returns true if flushed. #### end() Finishes the archive. ### class tar.Pack.Sync Synchronous version of `tar.Pack`. ### class tar.Unpack A writable stream that unpacks a tar archive onto the file system. All the normal writable stream stuff is supported. `write()` and `end()` methods, `'drain'` events, etc. Note that all directories that are created will be forced to be writable, readable, and listable by their owner, to avoid cases where a directory prevents extraction of child entries by virtue of its mode. `'close'` is emitted when it's done writing stuff to the file system. Most unpack errors will cause a `warn` event to be emitted. If the `cwd` is missing, or not a directory, then an error will be emitted. #### constructor(options) - `cwd` Extract files relative to the specified directory. Defaults to `process.cwd()`. If provided, this must exist and must be a directory. - `filter` A function that gets called with `(path, entry)` for each entry being unpacked. Return `true` to unpack the entry from the archive, or `false` to skip it. - `newer` Set to true to keep the existing file on disk if it's newer than the file in the archive. - `keep` Do not overwrite existing files. In particular, if a file appears more than once in an archive, later copies will not overwrite earlier copies. - `preservePaths` Allow absolute paths, paths containing `..`, and extracting through symbolic links. By default, `/` is stripped from absolute paths, `..` paths are not extracted, and any file whose location would be modified by a symbolic link is not extracted. - `unlink` Unlink files before creating them. Without this option, tar overwrites existing files, which preserves existing hardlinks. With this option, existing hardlinks will be broken, as will any symlink that would affect the location of an extracted file. - `strip` Remove the specified number of leading path elements. Pathnames with fewer elements will be silently skipped. Note that the pathname is edited after applying the filter, but before security checks. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `umask` Filter the modes of entries like `process.umask()`. - `dmode` Default mode for directories - `fmode` Default mode for files - `dirCache` A Map object of which directories exist. - `maxMetaEntrySize` The maximum size of meta entries that is supported. Defaults to 1 MB. - `preserveOwner` If true, tar will set the `uid` and `gid` of extracted entries to the `uid` and `gid` fields in the archive. This defaults to true when run as root, and false otherwise. If false, then files and directories will be set with the owner and group of the user running the process. This is similar to `-p` in `tar(1)`, but ACLs and other system-specific data is never unpacked in this implementation, and modes are set by default already. - `win32` True if on a windows platform. Causes behavior where filenames containing `<|>?` chars are converted to windows-compatible values while being unpacked. - `uid` Set to a number to force ownership of all extracted files and folders, and all implicitly created directories, to be owned by the specified user id, regardless of the `uid` field in the archive. Cannot be used along with `preserveOwner`. Requires also setting a `gid` option. - `gid` Set to a number to force ownership of all extracted files and folders, and all implicitly created directories, to be owned by the specified group id, regardless of the `gid` field in the archive. Cannot be used along with `preserveOwner`. Requires also setting a `uid` option. - `noMtime` Set to true to omit writing `mtime` value for extracted entries. - `transform` Provide a function that takes an `entry` object, and returns a stream, or any falsey value. If a stream is provided, then that stream's data will be written instead of the contents of the archive entry. If a falsey value is provided, then the entry is written to disk as normal. (To exclude items from extraction, use the `filter` option described above.) - `strict` Treat warnings as crash-worthy errors. Default false. - `onentry` A function that gets called with `(entry)` for each entry that passes the filter. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") ### class tar.Unpack.Sync Synchronous version of `tar.Unpack`. Note that using an asynchronous stream type with the `transform` option will cause undefined behavior in sync unpack streams. [MiniPass](http://npm.im/minipass)-based streams are designed for this use case. ### class tar.Parse A writable stream that parses a tar archive stream. All the standard writable stream stuff is supported. If the archive is gzipped, then tar will detect this and unzip it. Emits `'entry'` events with `tar.ReadEntry` objects, which are themselves readable streams that you can pipe wherever. Each `entry` will not emit until the one before it is flushed through, so make sure to either consume the data (with `on('data', ...)` or `.pipe(...)`) or throw it away with `.resume()` to keep the stream flowing. #### constructor(options) Returns an event emitter that emits `entry` events with `tar.ReadEntry` objects. The following options are supported: - `strict` Treat warnings as crash-worthy errors. Default false. - `filter` A function that gets called with `(path, entry)` for each entry being listed. Return `true` to emit the entry from the archive, or `false` to skip it. - `onentry` A function that gets called with `(entry)` for each entry that passes the filter. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") #### abort(error) Stop all parsing activities. This is called when there are zlib errors. It also emits an unrecoverable warning with the error provided. ### class tar.ReadEntry extends [MiniPass](http://npm.im/minipass) A representation of an entry that is being read out of a tar archive. It has the following fields: - `extended` The extended metadata object provided to the constructor. - `globalExtended` The global extended metadata object provided to the constructor. - `remain` The number of bytes remaining to be written into the stream. - `blockRemain` The number of 512-byte blocks remaining to be written into the stream. - `ignore` Whether this entry should be ignored. - `meta` True if this represents metadata about the next entry, false if it represents a filesystem object. - All the fields from the header, extended header, and global extended header are added to the ReadEntry object. So it has `path`, `type`, `size, `mode`, and so on. #### constructor(header, extended, globalExtended) Create a new ReadEntry object with the specified header, extended header, and global extended header values. ### class tar.WriteEntry extends [MiniPass](http://npm.im/minipass) A representation of an entry that is being written from the file system into a tar archive. Emits data for the Header, and for the Pax Extended Header if one is required, as well as any body data. Creating a WriteEntry for a directory does not also create WriteEntry objects for all of the directory contents. It has the following fields: - `path` The path field that will be written to the archive. By default, this is also the path from the cwd to the file system object. - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `myuid` If supported, the uid of the user running the current process. - `myuser` The `env.USER` string if set, or `''`. Set as the entry `uname` field if the file's `uid` matches `this.myuid`. - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 1 MB. - `linkCache` A Map object containing the device and inode value for any file whose nlink is > 1, to identify hard links. - `statCache` A Map object that caches calls `lstat`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. - `cwd` The current working directory for creating the archive. Defaults to `process.cwd()`. - `absolute` The absolute path to the entry on the filesystem. By default, this is `path.resolve(this.cwd, this.path)`, but it can be overridden explicitly. - `strict` Treat warnings as crash-worthy errors. Default false. - `win32` True if on a windows platform. Causes behavior where paths replace `\` with `/` and filenames containing the windows-compatible forms of `<|>?:` characters are converted to actual `<|>?:` characters in the archive. - `noPax` Suppress pax extended headers. Note that this means that long paths and linkpaths will be truncated, and large or negative numeric values may be interpreted incorrectly. - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. #### constructor(path, options) `path` is the path of the entry as it is written in the archive. The following options are supported: - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 1 MB. - `linkCache` A Map object containing the device and inode value for any file whose nlink is > 1, to identify hard links. - `statCache` A Map object that caches calls `lstat`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. - `cwd` The current working directory for creating the archive. Defaults to `process.cwd()`. - `absolute` The absolute path to the entry on the filesystem. By default, this is `path.resolve(this.cwd, this.path)`, but it can be overridden explicitly. - `strict` Treat warnings as crash-worthy errors. Default false. - `win32` True if on a windows platform. Causes behavior where paths replace `\` with `/`. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. - `umask` Set to restrict the modes on the entries in the archive, somewhat like how umask works on file creation. Defaults to `process.umask()` on unix systems, or `0o22` on Windows. #### warn(message, data) If strict, emit an error with the provided message. Othewise, emit a `'warn'` event with the provided message and data. ### class tar.WriteEntry.Sync Synchronous version of tar.WriteEntry ### class tar.WriteEntry.Tar A version of tar.WriteEntry that gets its data from a tar.ReadEntry instead of from the filesystem. #### constructor(readEntry, options) `readEntry` is the entry being read out of another archive. The following options are supported: - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. - `strict` Treat warnings as crash-worthy errors. Default false. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. ### class tar.Header A class for reading and writing header blocks. It has the following fields: - `nullBlock` True if decoding a block which is entirely composed of `0x00` null bytes. (Useful because tar files are terminated by at least 2 null blocks.) - `cksumValid` True if the checksum in the header is valid, false otherwise. - `needPax` True if the values, as encoded, will require a Pax extended header. - `path` The path of the entry. - `mode` The 4 lowest-order octal digits of the file mode. That is, read/write/execute permissions for world, group, and owner, and the setuid, setgid, and sticky bits. - `uid` Numeric user id of the file owner - `gid` Numeric group id of the file owner - `size` Size of the file in bytes - `mtime` Modified time of the file - `cksum` The checksum of the header. This is generated by adding all the bytes of the header block, treating the checksum field itself as all ascii space characters (that is, `0x20`). - `type` The human-readable name of the type of entry this represents, or the alphanumeric key if unknown. - `typeKey` The alphanumeric key for the type of entry this header represents. - `linkpath` The target of Link and SymbolicLink entries. - `uname` Human-readable user name of the file owner - `gname` Human-readable group name of the file owner - `devmaj` The major portion of the device number. Always `0` for files, directories, and links. - `devmin` The minor portion of the device number. Always `0` for files, directories, and links. - `atime` File access time. - `ctime` File change time. #### constructor(data, [offset=0]) `data` is optional. It is either a Buffer that should be interpreted as a tar Header starting at the specified offset and continuing for 512 bytes, or a data object of keys and values to set on the header object, and eventually encode as a tar Header. #### decode(block, offset) Decode the provided buffer starting at the specified offset. Buffer length must be greater than 512 bytes. #### set(data) Set the fields in the data object. #### encode(buffer, offset) Encode the header fields into the buffer at the specified offset. Returns `this.needPax` to indicate whether a Pax Extended Header is required to properly encode the specified data. ### class tar.Pax An object representing a set of key-value pairs in an Pax extended header entry. It has the following fields. Where the same name is used, they have the same semantics as the tar.Header field of the same name. - `global` True if this represents a global extended header, or false if it is for a single entry. - `atime` - `charset` - `comment` - `ctime` - `gid` - `gname` - `linkpath` - `mtime` - `path` - `size` - `uid` - `uname` - `dev` - `ino` - `nlink` #### constructor(object, global) Set the fields set in the object. `global` is a boolean that defaults to false. #### encode() Return a Buffer containing the header and body for the Pax extended header entry, or `null` if there is nothing to encode. #### encodeBody() Return a string representing the body of the pax extended header entry. #### encodeField(fieldName) Return a string representing the key/value encoding for the specified fieldName, or `''` if the field is unset. ### tar.Pax.parse(string, extended, global) Return a new Pax object created by parsing the contents of the string provided. If the `extended` object is set, then also add the fields from that object. (This is necessary because multiple metadata entries can occur in sequence.) ### tar.types A translation table for the `type` field in tar headers. #### tar.types.name.get(code) Get the human-readable name for a given alphanumeric code. #### tar.types.code.get(name) Get the alphanumeric code for a given human-readable name. # levn [](https://travis-ci.org/gkz/levn) <a name="levn" /> __Light ECMAScript (JavaScript) Value Notation__ Levn is a library which allows you to parse a string into a JavaScript value based on an expected type. It is meant for short amounts of human entered data (eg. config files, command line arguments). Levn aims to concisely describe JavaScript values in text, and allow for the extraction and validation of those values. Levn uses [type-check](https://github.com/gkz/type-check) for its type format, and to validate the results. MIT license. Version 0.4.1. __How is this different than JSON?__ levn is meant to be written by humans only, is (due to the previous point) much more concise, can be validated against supplied types, has regex and date literals, and can easily be extended with custom types. On the other hand, it is probably slower and thus less efficient at transporting large amounts of data, which is fine since this is not its purpose. npm install levn For updates on levn, [follow me on twitter](https://twitter.com/gkzahariev). ## Quick Examples ```js var parse = require('levn').parse; parse('Number', '2'); // 2 parse('String', '2'); // '2' parse('String', 'levn'); // 'levn' parse('String', 'a b'); // 'a b' parse('Boolean', 'true'); // true parse('Date', '#2011-11-11#'); // (Date object) parse('Date', '2011-11-11'); // (Date object) parse('RegExp', '/[a-z]/gi'); // /[a-z]/gi parse('RegExp', 're'); // /re/ parse('Int', '2'); // 2 parse('Number | String', 'str'); // 'str' parse('Number | String', '2'); // 2 parse('[Number]', '[1,2,3]'); // [1,2,3] parse('(String, Boolean)', '(hi, false)'); // ['hi', false] parse('{a: String, b: Number}', '{a: str, b: 2}'); // {a: 'str', b: 2} // at the top level, you can ommit surrounding delimiters parse('[Number]', '1,2,3'); // [1,2,3] parse('(String, Boolean)', 'hi, false'); // ['hi', false] parse('{a: String, b: Number}', 'a: str, b: 2'); // {a: 'str', b: 2} // wildcard - auto choose type parse('*', '[hi,(null,[42]),{k: true}]'); // ['hi', [null, [42]], {k: true}] ``` ## Usage `require('levn');` returns an object that exposes three properties. `VERSION` is the current version of the library as a string. `parse` and `parsedTypeParse` are functions. ```js // parse(type, input, options); parse('[Number]', '1,2,3'); // [1, 2, 3] // parsedTypeParse(parsedType, input, options); var parsedType = require('type-check').parseType('[Number]'); parsedTypeParse(parsedType, '1,2,3'); // [1, 2, 3] ``` ### parse(type, input, options) `parse` casts the string `input` into a JavaScript value according to the specified `type` in the [type format](https://github.com/gkz/type-check#type-format) (and taking account the optional `options`) and returns the resulting JavaScript value. ##### arguments * type - `String` - the type written in the [type format](https://github.com/gkz/type-check#type-format) which to check against * input - `String` - the value written in the [levn format](#levn-format) * options - `Maybe Object` - an optional parameter specifying additional [options](#options) ##### returns `*` - the resulting JavaScript value ##### example ```js parse('[Number]', '1,2,3'); // [1, 2, 3] ``` ### parsedTypeParse(parsedType, input, options) `parsedTypeParse` casts the string `input` into a JavaScript value according to the specified `type` which has already been parsed (and taking account the optional `options`) and returns the resulting JavaScript value. You can parse a type using the [type-check](https://github.com/gkz/type-check) library's `parseType` function. ##### arguments * type - `Object` - the type in the parsed type format which to check against * input - `String` - the value written in the [levn format](#levn-format) * options - `Maybe Object` - an optional parameter specifying additional [options](#options) ##### returns `*` - the resulting JavaScript value ##### example ```js var parsedType = require('type-check').parseType('[Number]'); parsedTypeParse(parsedType, '1,2,3'); // [1, 2, 3] ``` ## Levn Format Levn can use the type information you provide to choose the appropriate value to produce from the input. For the same input, it will choose a different output value depending on the type provided. For example, `parse('Number', '2')` will produce the number `2`, but `parse('String', '2')` will produce the string `"2"`. If you do not provide type information, and simply use `*`, levn will parse the input according the unambiguous "explicit" mode, which we will now detail - you can also set the `explicit` option to true manually in the [options](#options). * `"string"`, `'string'` are parsed as a String, eg. `"a msg"` is `"a msg"` * `#date#` is parsed as a Date, eg. `#2011-11-11#` is `new Date('2011-11-11')` * `/regexp/flags` is parsed as a RegExp, eg. `/re/gi` is `/re/gi` * `undefined`, `null`, `NaN`, `true`, and `false` are all their JavaScript equivalents * `[element1, element2, etc]` is an Array, and the casting procedure is recursively applied to each element. Eg. `[1,2,3]` is `[1,2,3]`. * `(element1, element2, etc)` is an tuple, and the casting procedure is recursively applied to each element. Eg. `(1, a)` is `(1, a)` (is `[1, 'a']`). * `{key1: val1, key2: val2, ...}` is an Object, and the casting procedure is recursively applied to each property. Eg. `{a: 1, b: 2}` is `{a: 1, b: 2}`. * Any test which does not fall under the above, and which does not contain special characters (`[``]``(``)``{``}``:``,`) is a string, eg. `$12- blah` is `"$12- blah"`. If you do provide type information, you can make your input more concise as the program already has some information about what it expects. Please see the [type format](https://github.com/gkz/type-check#type-format) section of [type-check](https://github.com/gkz/type-check) for more information about how to specify types. There are some rules about what levn can do with the information: * If a String is expected, and only a String, all characters of the input (including any special ones) will become part of the output. Eg. `[({})]` is `"[({})]"`, and `"hi"` is `'"hi"'`. * If a Date is expected, the surrounding `#` can be omitted from date literals. Eg. `2011-11-11` is `new Date('2011-11-11')`. * If a RegExp is expected, no flags need to be specified, and the regex is not using any of the special characters,the opening and closing `/` can be omitted - this will have the affect of setting the source of the regex to the input. Eg. `regex` is `/regex/`. * If an Array is expected, and it is the root node (at the top level), the opening `[` and closing `]` can be omitted. Eg. `1,2,3` is `[1,2,3]`. * If a tuple is expected, and it is the root node (at the top level), the opening `(` and closing `)` can be omitted. Eg. `1, a` is `(1, a)` (is `[1, 'a']`). * If an Object is expected, and it is the root node (at the top level), the opening `{` and closing `}` can be omitted. Eg `a: 1, b: 2` is `{a: 1, b: 2}`. If you list multiple types (eg. `Number | String`), it will first attempt to cast to the first type and then validate - if the validation fails it will move on to the next type and so forth, left to right. You must be careful as some types will succeed with any input, such as String. Thus put String at the end of your list. In non-explicit mode, Date and RegExp will succeed with a large variety of input - also be careful with these and list them near the end if not last in your list. Whitespace between special characters and elements is inconsequential. ## Options Options is an object. It is an optional parameter to the `parse` and `parsedTypeParse` functions. ### Explicit A `Boolean`. By default it is `false`. __Example:__ ```js parse('RegExp', 're', {explicit: false}); // /re/ parse('RegExp', 're', {explicit: true}); // Error: ... does not type check... parse('RegExp | String', 're', {explicit: true}); // 're' ``` `explicit` sets whether to be in explicit mode or not. Using `*` automatically activates explicit mode. For more information, read the [levn format](#levn-format) section. ### customTypes An `Object`. Empty `{}` by default. __Example:__ ```js var options = { customTypes: { Even: { typeOf: 'Number', validate: function (x) { return x % 2 === 0; }, cast: function (x) { return {type: 'Just', value: parseInt(x)}; } } } } parse('Even', '2', options); // 2 parse('Even', '3', options); // Error: Value: "3" does not type check... ``` __Another Example:__ ```js function Person(name, age){ this.name = name; this.age = age; } var options = { customTypes: { Person: { typeOf: 'Object', validate: function (x) { x instanceof Person; }, cast: function (value, options, typesCast) { var name, age; if ({}.toString.call(value).slice(8, -1) !== 'Object') { return {type: 'Nothing'}; } name = typesCast(value.name, [{type: 'String'}], options); age = typesCast(value.age, [{type: 'Numger'}], options); return {type: 'Just', value: new Person(name, age)}; } } } parse('Person', '{name: Laura, age: 25}', options); // Person {name: 'Laura', age: 25} ``` `customTypes` is an object whose keys are the name of the types, and whose values are an object with three properties, `typeOf`, `validate`, and `cast`. For more information about `typeOf` and `validate`, please see the [custom types](https://github.com/gkz/type-check#custom-types) section of type-check. `cast` is a function which receives three arguments, the value under question, options, and the typesCast function. In `cast`, attempt to cast the value into the specified type. If you are successful, return an object in the format `{type: 'Just', value: CAST-VALUE}`, if you know it won't work, return `{type: 'Nothing'}`. You can use the `typesCast` function to cast any child values. Remember to pass `options` to it. In your function you can also check for `options.explicit` and act accordingly. ## Technical About `levn` is written in [LiveScript](http://livescript.net/) - a language that compiles to JavaScript. It uses [type-check](https://github.com/gkz/type-check) to both parse types and validate values. It also uses the [prelude.ls](http://preludels.com/) library. # prelude.ls [](https://travis-ci.org/gkz/prelude-ls) is a functionally oriented utility library. It is powerful and flexible. Almost all of its functions are curried. It is written in, and is the recommended base library for, <a href="http://livescript.net">LiveScript</a>. See **[the prelude.ls site](http://preludels.com)** for examples, a reference, and more. You can install via npm `npm install prelude-ls` ### Development `make test` to test `make build` to build `lib` from `src` `make build-browser` to build browser versions # <img src="./logo.png" alt="bn.js" width="160" height="160" /> > BigNum in pure javascript [](http://travis-ci.org/indutny/bn.js) ## Install `npm install --save bn.js` ## Usage ```js const BN = require('bn.js'); var a = new BN('dead', 16); var b = new BN('101010', 2); var res = a.add(b); console.log(res.toString(10)); // 57047 ``` **Note**: decimals are not supported in this library. ## Notation ### Prefixes There are several prefixes to instructions that affect the way the work. Here is the list of them in the order of appearance in the function name: * `i` - perform operation in-place, storing the result in the host object (on which the method was invoked). Might be used to avoid number allocation costs * `u` - unsigned, ignore the sign of operands when performing operation, or always return positive value. Second case applies to reduction operations like `mod()`. In such cases if the result will be negative - modulo will be added to the result to make it positive ### Postfixes * `n` - the argument of the function must be a plain JavaScript Number. Decimals are not supported. * `rn` - both argument and return value of the function are plain JavaScript Numbers. Decimals are not supported. ### Examples * `a.iadd(b)` - perform addition on `a` and `b`, storing the result in `a` * `a.umod(b)` - reduce `a` modulo `b`, returning positive value * `a.iushln(13)` - shift bits of `a` left by 13 ## Instructions Prefixes/postfixes are put in parens at the of the line. `endian` - could be either `le` (little-endian) or `be` (big-endian). ### Utilities * `a.clone()` - clone number * `a.toString(base, length)` - convert to base-string and pad with zeroes * `a.toNumber()` - convert to Javascript Number (limited to 53 bits) * `a.toJSON()` - convert to JSON compatible hex string (alias of `toString(16)`) * `a.toArray(endian, length)` - convert to byte `Array`, and optionally zero pad to length, throwing if already exceeding * `a.toArrayLike(type, endian, length)` - convert to an instance of `type`, which must behave like an `Array` * `a.toBuffer(endian, length)` - convert to Node.js Buffer (if available). For compatibility with browserify and similar tools, use this instead: `a.toArrayLike(Buffer, endian, length)` * `a.bitLength()` - get number of bits occupied * `a.zeroBits()` - return number of less-significant consequent zero bits (example: `1010000` has 4 zero bits) * `a.byteLength()` - return number of bytes occupied * `a.isNeg()` - true if the number is negative * `a.isEven()` - no comments * `a.isOdd()` - no comments * `a.isZero()` - no comments * `a.cmp(b)` - compare numbers and return `-1` (a `<` b), `0` (a `==` b), or `1` (a `>` b) depending on the comparison result (`ucmp`, `cmpn`) * `a.lt(b)` - `a` less than `b` (`n`) * `a.lte(b)` - `a` less than or equals `b` (`n`) * `a.gt(b)` - `a` greater than `b` (`n`) * `a.gte(b)` - `a` greater than or equals `b` (`n`) * `a.eq(b)` - `a` equals `b` (`n`) * `a.toTwos(width)` - convert to two's complement representation, where `width` is bit width * `a.fromTwos(width)` - convert from two's complement representation, where `width` is the bit width * `BN.isBN(object)` - returns true if the supplied `object` is a BN.js instance * `BN.max(a, b)` - return `a` if `a` bigger than `b` * `BN.min(a, b)` - return `a` if `a` less than `b` ### Arithmetics * `a.neg()` - negate sign (`i`) * `a.abs()` - absolute value (`i`) * `a.add(b)` - addition (`i`, `n`, `in`) * `a.sub(b)` - subtraction (`i`, `n`, `in`) * `a.mul(b)` - multiply (`i`, `n`, `in`) * `a.sqr()` - square (`i`) * `a.pow(b)` - raise `a` to the power of `b` * `a.div(b)` - divide (`divn`, `idivn`) * `a.mod(b)` - reduct (`u`, `n`) (but no `umodn`) * `a.divmod(b)` - quotient and modulus obtained by dividing * `a.divRound(b)` - rounded division ### Bit operations * `a.or(b)` - or (`i`, `u`, `iu`) * `a.and(b)` - and (`i`, `u`, `iu`, `andln`) (NOTE: `andln` is going to be replaced with `andn` in future) * `a.xor(b)` - xor (`i`, `u`, `iu`) * `a.setn(b, value)` - set specified bit to `value` * `a.shln(b)` - shift left (`i`, `u`, `iu`) * `a.shrn(b)` - shift right (`i`, `u`, `iu`) * `a.testn(b)` - test if specified bit is set * `a.maskn(b)` - clear bits with indexes higher or equal to `b` (`i`) * `a.bincn(b)` - add `1 << b` to the number * `a.notn(w)` - not (for the width specified by `w`) (`i`) ### Reduction * `a.gcd(b)` - GCD * `a.egcd(b)` - Extended GCD results (`{ a: ..., b: ..., gcd: ... }`) * `a.invm(b)` - inverse `a` modulo `b` ## Fast reduction When doing lots of reductions using the same modulo, it might be beneficial to use some tricks: like [Montgomery multiplication][0], or using special algorithm for [Mersenne Prime][1]. ### Reduction context To enable this tricks one should create a reduction context: ```js var red = BN.red(num); ``` where `num` is just a BN instance. Or: ```js var red = BN.red(primeName); ``` Where `primeName` is either of these [Mersenne Primes][1]: * `'k256'` * `'p224'` * `'p192'` * `'p25519'` Or: ```js var red = BN.mont(num); ``` To reduce numbers with [Montgomery trick][0]. `.mont()` is generally faster than `.red(num)`, but slower than `BN.red(primeName)`. ### Converting numbers Before performing anything in reduction context - numbers should be converted to it. Usually, this means that one should: * Convert inputs to reducted ones * Operate on them in reduction context * Convert outputs back from the reduction context Here is how one may convert numbers to `red`: ```js var redA = a.toRed(red); ``` Where `red` is a reduction context created using instructions above Here is how to convert them back: ```js var a = redA.fromRed(); ``` ### Red instructions Most of the instructions from the very start of this readme have their counterparts in red context: * `a.redAdd(b)`, `a.redIAdd(b)` * `a.redSub(b)`, `a.redISub(b)` * `a.redShl(num)` * `a.redMul(b)`, `a.redIMul(b)` * `a.redSqr()`, `a.redISqr()` * `a.redSqrt()` - square root modulo reduction context's prime * `a.redInvm()` - modular inverse of the number * `a.redNeg()` * `a.redPow(b)` - modular exponentiation ### Number Size Optimized for elliptic curves that work with 256-bit numbers. There is no limitation on the size of the numbers. ## LICENSE This software is licensed under the MIT License. [0]: https://en.wikipedia.org/wiki/Montgomery_modular_multiplication [1]: https://en.wikipedia.org/wiki/Mersenne_prime JS-YAML - YAML 1.2 parser / writer for JavaScript ================================================= [](https://travis-ci.org/nodeca/js-yaml) [](https://www.npmjs.org/package/js-yaml) __[Online Demo](http://nodeca.github.com/js-yaml/)__ This is an implementation of [YAML](http://yaml.org/), a human-friendly data serialization language. Started as [PyYAML](http://pyyaml.org/) port, it was completely rewritten from scratch. Now it's very fast, and supports 1.2 spec. Installation ------------ ### YAML module for node.js ``` npm install js-yaml ``` ### CLI executable If you want to inspect your YAML files from CLI, install js-yaml globally: ``` npm install -g js-yaml ``` #### Usage ``` usage: js-yaml [-h] [-v] [-c] [-t] file Positional arguments: file File with YAML document(s) Optional arguments: -h, --help Show this help message and exit. -v, --version Show program's version number and exit. -c, --compact Display errors in compact mode -t, --trace Show stack trace on error ``` ### Bundled YAML library for browsers ``` html <!-- esprima required only for !!js/function --> <script src="esprima.js"></script> <script src="js-yaml.min.js"></script> <script type="text/javascript"> var doc = jsyaml.load('greeting: hello\nname: world'); </script> ``` Browser support was done mostly for the online demo. If you find any errors - feel free to send pull requests with fixes. Also note, that IE and other old browsers needs [es5-shims](https://github.com/kriskowal/es5-shim) to operate. Notes: 1. We have no resources to support browserified version. Don't expect it to be well tested. Don't expect fast fixes if something goes wrong there. 2. `!!js/function` in browser bundle will not work by default. If you really need it - load `esprima` parser first (via amd or directly). 3. `!!bin` in browser will return `Array`, because browsers do not support node.js `Buffer` and adding Buffer shims is completely useless on practice. API --- Here we cover the most 'useful' methods. If you need advanced details (creating your own tags), see [wiki](https://github.com/nodeca/js-yaml/wiki) and [examples](https://github.com/nodeca/js-yaml/tree/master/examples) for more info. ``` javascript const yaml = require('js-yaml'); const fs = require('fs'); // Get document, or throw exception on error try { const doc = yaml.safeLoad(fs.readFileSync('/home/ixti/example.yml', 'utf8')); console.log(doc); } catch (e) { console.log(e); } ``` ### safeLoad (string [ , options ]) **Recommended loading way.** Parses `string` as single YAML document. Returns either a plain object, a string or `undefined`, or throws `YAMLException` on error. By default, does not support regexps, functions and undefined. This method is safe for untrusted data. options: - `filename` _(default: null)_ - string to be used as a file path in error/warning messages. - `onWarning` _(default: null)_ - function to call on warning messages. Loader will call this function with an instance of `YAMLException` for each warning. - `schema` _(default: `DEFAULT_SAFE_SCHEMA`)_ - specifies a schema to use. - `FAILSAFE_SCHEMA` - only strings, arrays and plain objects: http://www.yaml.org/spec/1.2/spec.html#id2802346 - `JSON_SCHEMA` - all JSON-supported types: http://www.yaml.org/spec/1.2/spec.html#id2803231 - `CORE_SCHEMA` - same as `JSON_SCHEMA`: http://www.yaml.org/spec/1.2/spec.html#id2804923 - `DEFAULT_SAFE_SCHEMA` - all supported YAML types, without unsafe ones (`!!js/undefined`, `!!js/regexp` and `!!js/function`): http://yaml.org/type/ - `DEFAULT_FULL_SCHEMA` - all supported YAML types. - `json` _(default: false)_ - compatibility with JSON.parse behaviour. If true, then duplicate keys in a mapping will override values rather than throwing an error. NOTE: This function **does not** understand multi-document sources, it throws exception on those. NOTE: JS-YAML **does not** support schema-specific tag resolution restrictions. So, the JSON schema is not as strictly defined in the YAML specification. It allows numbers in any notation, use `Null` and `NULL` as `null`, etc. The core schema also has no such restrictions. It allows binary notation for integers. ### load (string [ , options ]) **Use with care with untrusted sources**. The same as `safeLoad()` but uses `DEFAULT_FULL_SCHEMA` by default - adds some JavaScript-specific types: `!!js/function`, `!!js/regexp` and `!!js/undefined`. For untrusted sources, you must additionally validate object structure to avoid injections: ``` javascript const untrusted_code = '"toString": !<tag:yaml.org,2002:js/function> "function (){very_evil_thing();}"'; // I'm just converting that string, what could possibly go wrong? require('js-yaml').load(untrusted_code) + '' ``` ### safeLoadAll (string [, iterator] [, options ]) Same as `safeLoad()`, but understands multi-document sources. Applies `iterator` to each document if specified, or returns array of documents. ``` javascript const yaml = require('js-yaml'); yaml.safeLoadAll(data, function (doc) { console.log(doc); }); ``` ### loadAll (string [, iterator] [ , options ]) Same as `safeLoadAll()` but uses `DEFAULT_FULL_SCHEMA` by default. ### safeDump (object [ , options ]) Serializes `object` as a YAML document. Uses `DEFAULT_SAFE_SCHEMA`, so it will throw an exception if you try to dump regexps or functions. However, you can disable exceptions by setting the `skipInvalid` option to `true`. options: - `indent` _(default: 2)_ - indentation width to use (in spaces). - `noArrayIndent` _(default: false)_ - when true, will not add an indentation level to array elements - `skipInvalid` _(default: false)_ - do not throw on invalid types (like function in the safe schema) and skip pairs and single values with such types. - `flowLevel` (default: -1) - specifies level of nesting, when to switch from block to flow style for collections. -1 means block style everwhere - `styles` - "tag" => "style" map. Each tag may have own set of styles. - `schema` _(default: `DEFAULT_SAFE_SCHEMA`)_ specifies a schema to use. - `sortKeys` _(default: `false`)_ - if `true`, sort keys when dumping YAML. If a function, use the function to sort the keys. - `lineWidth` _(default: `80`)_ - set max line width. - `noRefs` _(default: `false`)_ - if `true`, don't convert duplicate objects into references - `noCompatMode` _(default: `false`)_ - if `true` don't try to be compatible with older yaml versions. Currently: don't quote "yes", "no" and so on, as required for YAML 1.1 - `condenseFlow` _(default: `false`)_ - if `true` flow sequences will be condensed, omitting the space between `a, b`. Eg. `'[a,b]'`, and omitting the space between `key: value` and quoting the key. Eg. `'{"a":b}'` Can be useful when using yaml for pretty URL query params as spaces are %-encoded. The following table show availlable styles (e.g. "canonical", "binary"...) available for each tag (.e.g. !!null, !!int ...). Yaml output is shown on the right side after `=>` (default setting) or `->`: ``` none !!null "canonical" -> "~" "lowercase" => "null" "uppercase" -> "NULL" "camelcase" -> "Null" !!int "binary" -> "0b1", "0b101010", "0b1110001111010" "octal" -> "01", "052", "016172" "decimal" => "1", "42", "7290" "hexadecimal" -> "0x1", "0x2A", "0x1C7A" !!bool "lowercase" => "true", "false" "uppercase" -> "TRUE", "FALSE" "camelcase" -> "True", "False" !!float "lowercase" => ".nan", '.inf' "uppercase" -> ".NAN", '.INF' "camelcase" -> ".NaN", '.Inf' ``` Example: ``` javascript safeDump (object, { 'styles': { '!!null': 'canonical' // dump null as ~ }, 'sortKeys': true // sort object keys }); ``` ### dump (object [ , options ]) Same as `safeDump()` but without limits (uses `DEFAULT_FULL_SCHEMA` by default). Supported YAML types -------------------- The list of standard YAML tags and corresponding JavaScipt types. See also [YAML tag discussion](http://pyyaml.org/wiki/YAMLTagDiscussion) and [YAML types repository](http://yaml.org/type/). ``` !!null '' # null !!bool 'yes' # bool !!int '3...' # number !!float '3.14...' # number !!binary '...base64...' # buffer !!timestamp 'YYYY-...' # date !!omap [ ... ] # array of key-value pairs !!pairs [ ... ] # array or array pairs !!set { ... } # array of objects with given keys and null values !!str '...' # string !!seq [ ... ] # array !!map { ... } # object ``` **JavaScript-specific tags** ``` !!js/regexp /pattern/gim # RegExp !!js/undefined '' # Undefined !!js/function 'function () {...}' # Function ``` Caveats ------- Note, that you use arrays or objects as key in JS-YAML. JS does not allow objects or arrays as keys, and stringifies (by calling `toString()` method) them at the moment of adding them. ``` yaml --- ? [ foo, bar ] : - baz ? { foo: bar } : - baz - baz ``` ``` javascript { "foo,bar": ["baz"], "[object Object]": ["baz", "baz"] } ``` Also, reading of properties on implicit block mapping keys is not supported yet. So, the following YAML document cannot be loaded. ``` yaml &anchor foo: foo: bar *anchor: duplicate key baz: bat *anchor: duplicate key ``` js-yaml for enterprise ---------------------- Available as part of the Tidelift Subscription The maintainers of js-yaml and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. [Learn more.](https://tidelift.com/subscription/pkg/npm-js-yaml?utm_source=npm-js-yaml&utm_medium=referral&utm_campaign=enterprise&utm_term=repo) [](https://www.npmjs.com/package/as-bignum)[](https://travis-ci.com/MaxGraey/as-bignum)[](LICENSE.md) ## WebAssembly fixed length big numbers written on [AssemblyScript](https://github.com/AssemblyScript/assemblyscript) ### Status: Work in progress Provide wide numeric types such as `u128`, `u256`, `i128`, `i256` and fixed points and also its arithmetic operations. Namespace `safe` contain equivalents with overflow/underflow traps. All kind of types pretty useful for economical and cryptographic usages and provide deterministic behavior. ### Install > yarn add as-bignum or > npm i as-bignum ### Usage via AssemblyScript ```ts import { u128 } from "as-bignum"; declare function logF64(value: f64): void; declare function logU128(hi: u64, lo: u64): void; var a = u128.One; var b = u128.from(-32); // same as u128.from<i32>(-32) var c = new u128(0x1, -0xF); var d = u128.from(0x0123456789ABCDEF); // same as u128.from<i64>(0x0123456789ABCDEF) var e = u128.from('0x0123456789ABCDEF01234567'); var f = u128.fromString('11100010101100101', 2); // same as u128.from('0b11100010101100101') var r = d / c + (b << 5) + e; logF64(r.as<f64>()); logU128(r.hi, r.lo); ``` ### Usage via JavaScript/Typescript ```ts TODO ``` ### List of types - [x] [`u128`](https://github.com/MaxGraey/as-bignum/blob/master/assembly/integer/u128.ts) unsigned type (tested) - [ ] [`u256`](https://github.com/MaxGraey/as-bignum/blob/master/assembly/integer/u256.ts) unsigned type (very basic) - [ ] `i128` signed type - [ ] `i256` signed type --- - [x] [`safe.u128`](https://github.com/MaxGraey/as-bignum/blob/master/assembly/integer/safe/u128.ts) unsigned type (tested) - [ ] `safe.u256` unsigned type - [ ] `safe.i128` signed type - [ ] `safe.i256` signed type --- - [ ] [`fp128<Q>`](https://github.com/MaxGraey/as-bignum/blob/master/assembly/fixed/fp128.ts) generic fixed point signed type٭ (very basic for now) - [ ] `fp256<Q>` generic fixed point signed type٭ --- - [ ] `safe.fp128<Q>` generic fixed point signed type٭ - [ ] `safe.fp256<Q>` generic fixed point signed type٭ ٭ _typename_ `Q` _is a type representing count of fractional bits_ # ESLint Scope ESLint Scope is the [ECMAScript](http://www.ecma-international.org/publications/standards/Ecma-262.htm) scope analyzer used in ESLint. It is a fork of [escope](http://github.com/estools/escope). ## Usage Install: ``` npm i eslint-scope --save ``` Example: ```js var eslintScope = require('eslint-scope'); var espree = require('espree'); var estraverse = require('estraverse'); var ast = espree.parse(code); var scopeManager = eslintScope.analyze(ast); var currentScope = scopeManager.acquire(ast); // global scope estraverse.traverse(ast, { enter: function(node, parent) { // do stuff if (/Function/.test(node.type)) { currentScope = scopeManager.acquire(node); // get current function scope } }, leave: function(node, parent) { if (/Function/.test(node.type)) { currentScope = currentScope.upper; // set to parent scope } // do stuff } }); ``` ## Contributing Issues and pull requests will be triaged and responded to as quickly as possible. We operate under the [ESLint Contributor Guidelines](http://eslint.org/docs/developer-guide/contributing), so please be sure to read them before contributing. If you're not sure where to dig in, check out the [issues](https://github.com/eslint/eslint-scope/issues). ## Build Commands * `npm test` - run all linting and tests * `npm run lint` - run all linting ## License ESLint Scope is licensed under a permissive BSD 2-clause license. # lodash.merge v4.6.2 The [Lodash](https://lodash.com/) method `_.merge` exported as a [Node.js](https://nodejs.org/) module. ## Installation Using npm: ```bash $ {sudo -H} npm i -g npm $ npm i --save lodash.merge ``` In Node.js: ```js var merge = require('lodash.merge'); ``` See the [documentation](https://lodash.com/docs#merge) or [package source](https://github.com/lodash/lodash/blob/4.6.2-npm-packages/lodash.merge) for more details. # function-bind <!-- [![build status][travis-svg]][travis-url] [![NPM version][npm-badge-svg]][npm-url] [![Coverage Status][5]][6] [![gemnasium Dependency Status][7]][8] [![Dependency status][deps-svg]][deps-url] [![Dev Dependency status][dev-deps-svg]][dev-deps-url] --> <!-- [![browser support][11]][12] --> Implementation of function.prototype.bind ## Example I mainly do this for unit tests I run on phantomjs. PhantomJS does not have Function.prototype.bind :( ```js Function.prototype.bind = require("function-bind") ``` ## Installation `npm install function-bind` ## Contributors - Raynos ## MIT Licenced [travis-svg]: https://travis-ci.org/Raynos/function-bind.svg [travis-url]: https://travis-ci.org/Raynos/function-bind [npm-badge-svg]: https://badge.fury.io/js/function-bind.svg [npm-url]: https://npmjs.org/package/function-bind [5]: https://coveralls.io/repos/Raynos/function-bind/badge.png [6]: https://coveralls.io/r/Raynos/function-bind [7]: https://gemnasium.com/Raynos/function-bind.png [8]: https://gemnasium.com/Raynos/function-bind [deps-svg]: https://david-dm.org/Raynos/function-bind.svg [deps-url]: https://david-dm.org/Raynos/function-bind [dev-deps-svg]: https://david-dm.org/Raynos/function-bind/dev-status.svg [dev-deps-url]: https://david-dm.org/Raynos/function-bind#info=devDependencies [11]: https://ci.testling.com/Raynos/function-bind.png [12]: https://ci.testling.com/Raynos/function-bind <p align="center"> <a href="https://gulpjs.com"> <img height="257" width="114" src="https://raw.githubusercontent.com/gulpjs/artwork/master/gulp-2x.png"> </a> </p> # glob-parent [![NPM version][npm-image]][npm-url] [![Downloads][downloads-image]][npm-url] [![Azure Pipelines Build Status][azure-pipelines-image]][azure-pipelines-url] [![Travis Build Status][travis-image]][travis-url] [![AppVeyor Build Status][appveyor-image]][appveyor-url] [![Coveralls Status][coveralls-image]][coveralls-url] [![Gitter chat][gitter-image]][gitter-url] Extract the non-magic parent path from a glob string. ## Usage ```js var globParent = require('glob-parent'); globParent('path/to/*.js'); // 'path/to' globParent('/root/path/to/*.js'); // '/root/path/to' globParent('/*.js'); // '/' globParent('*.js'); // '.' globParent('**/*.js'); // '.' globParent('path/{to,from}'); // 'path' globParent('path/!(to|from)'); // 'path' globParent('path/?(to|from)'); // 'path' globParent('path/+(to|from)'); // 'path' globParent('path/*(to|from)'); // 'path' globParent('path/@(to|from)'); // 'path' globParent('path/**/*'); // 'path' // if provided a non-glob path, returns the nearest dir globParent('path/foo/bar.js'); // 'path/foo' globParent('path/foo/'); // 'path/foo' globParent('path/foo'); // 'path' (see issue #3 for details) ``` ## API ### `globParent(maybeGlobString, [options])` Takes a string and returns the part of the path before the glob begins. Be aware of Escaping rules and Limitations below. #### options ```js { // Disables the automatic conversion of slashes for Windows flipBackslashes: true } ``` ## Escaping The following characters have special significance in glob patterns and must be escaped if you want them to be treated as regular path characters: - `?` (question mark) unless used as a path segment alone - `*` (asterisk) - `|` (pipe) - `(` (opening parenthesis) - `)` (closing parenthesis) - `{` (opening curly brace) - `}` (closing curly brace) - `[` (opening bracket) - `]` (closing bracket) **Example** ```js globParent('foo/[bar]/') // 'foo' globParent('foo/\\[bar]/') // 'foo/[bar]' ``` ## Limitations ### Braces & Brackets This library attempts a quick and imperfect method of determining which path parts have glob magic without fully parsing/lexing the pattern. There are some advanced use cases that can trip it up, such as nested braces where the outer pair is escaped and the inner one contains a path separator. If you find yourself in the unlikely circumstance of being affected by this or need to ensure higher-fidelity glob handling in your library, it is recommended that you pre-process your input with [expand-braces] and/or [expand-brackets]. ### Windows Backslashes are not valid path separators for globs. If a path with backslashes is provided anyway, for simple cases, glob-parent will replace the path separator for you and return the non-glob parent path (now with forward-slashes, which are still valid as Windows path separators). This cannot be used in conjunction with escape characters. ```js // BAD globParent('C:\\Program Files \\(x86\\)\\*.ext') // 'C:/Program Files /(x86/)' // GOOD globParent('C:/Program Files\\(x86\\)/*.ext') // 'C:/Program Files (x86)' ``` If you are using escape characters for a pattern without path parts (i.e. relative to `cwd`), prefix with `./` to avoid confusing glob-parent. ```js // BAD globParent('foo \\[bar]') // 'foo ' globParent('foo \\[bar]*') // 'foo ' // GOOD globParent('./foo \\[bar]') // 'foo [bar]' globParent('./foo \\[bar]*') // '.' ``` ## License ISC [expand-braces]: https://github.com/jonschlinkert/expand-braces [expand-brackets]: https://github.com/jonschlinkert/expand-brackets [downloads-image]: https://img.shields.io/npm/dm/glob-parent.svg [npm-url]: https://www.npmjs.com/package/glob-parent [npm-image]: https://img.shields.io/npm/v/glob-parent.svg [azure-pipelines-url]: https://dev.azure.com/gulpjs/gulp/_build/latest?definitionId=2&branchName=master [azure-pipelines-image]: https://dev.azure.com/gulpjs/gulp/_apis/build/status/glob-parent?branchName=master [travis-url]: https://travis-ci.org/gulpjs/glob-parent [travis-image]: https://img.shields.io/travis/gulpjs/glob-parent.svg?label=travis-ci [appveyor-url]: https://ci.appveyor.com/project/gulpjs/glob-parent [appveyor-image]: https://img.shields.io/appveyor/ci/gulpjs/glob-parent.svg?label=appveyor [coveralls-url]: https://coveralls.io/r/gulpjs/glob-parent [coveralls-image]: https://img.shields.io/coveralls/gulpjs/glob-parent/master.svg [gitter-url]: https://gitter.im/gulpjs/gulp [gitter-image]: https://badges.gitter.im/gulpjs/gulp.svg # yallist Yet Another Linked List There are many doubly-linked list implementations like it, but this one is mine. For when an array would be too big, and a Map can't be iterated in reverse order. [](https://travis-ci.org/isaacs/yallist) [](https://coveralls.io/github/isaacs/yallist) ## basic usage ```javascript var yallist = require('yallist') var myList = yallist.create([1, 2, 3]) myList.push('foo') myList.unshift('bar') // of course pop() and shift() are there, too console.log(myList.toArray()) // ['bar', 1, 2, 3, 'foo'] myList.forEach(function (k) { // walk the list head to tail }) myList.forEachReverse(function (k, index, list) { // walk the list tail to head }) var myDoubledList = myList.map(function (k) { return k + k }) // now myDoubledList contains ['barbar', 2, 4, 6, 'foofoo'] // mapReverse is also a thing var myDoubledListReverse = myList.mapReverse(function (k) { return k + k }) // ['foofoo', 6, 4, 2, 'barbar'] var reduced = myList.reduce(function (set, entry) { set += entry return set }, 'start') console.log(reduced) // 'startfoo123bar' ``` ## api The whole API is considered "public". Functions with the same name as an Array method work more or less the same way. There's reverse versions of most things because that's the point. ### Yallist Default export, the class that holds and manages a list. Call it with either a forEach-able (like an array) or a set of arguments, to initialize the list. The Array-ish methods all act like you'd expect. No magic length, though, so if you change that it won't automatically prune or add empty spots. ### Yallist.create(..) Alias for Yallist function. Some people like factories. #### yallist.head The first node in the list #### yallist.tail The last node in the list #### yallist.length The number of nodes in the list. (Change this at your peril. It is not magic like Array length.) #### yallist.toArray() Convert the list to an array. #### yallist.forEach(fn, [thisp]) Call a function on each item in the list. #### yallist.forEachReverse(fn, [thisp]) Call a function on each item in the list, in reverse order. #### yallist.get(n) Get the data at position `n` in the list. If you use this a lot, probably better off just using an Array. #### yallist.getReverse(n) Get the data at position `n`, counting from the tail. #### yallist.map(fn, thisp) Create a new Yallist with the result of calling the function on each item. #### yallist.mapReverse(fn, thisp) Same as `map`, but in reverse. #### yallist.pop() Get the data from the list tail, and remove the tail from the list. #### yallist.push(item, ...) Insert one or more items to the tail of the list. #### yallist.reduce(fn, initialValue) Like Array.reduce. #### yallist.reduceReverse Like Array.reduce, but in reverse. #### yallist.reverse Reverse the list in place. #### yallist.shift() Get the data from the list head, and remove the head from the list. #### yallist.slice([from], [to]) Just like Array.slice, but returns a new Yallist. #### yallist.sliceReverse([from], [to]) Just like yallist.slice, but the result is returned in reverse. #### yallist.toArray() Create an array representation of the list. #### yallist.toArrayReverse() Create a reversed array representation of the list. #### yallist.unshift(item, ...) Insert one or more items to the head of the list. #### yallist.unshiftNode(node) Move a Node object to the front of the list. (That is, pull it out of wherever it lives, and make it the new head.) If the node belongs to a different list, then that list will remove it first. #### yallist.pushNode(node) Move a Node object to the end of the list. (That is, pull it out of wherever it lives, and make it the new tail.) If the node belongs to a list already, then that list will remove it first. #### yallist.removeNode(node) Remove a node from the list, preserving referential integrity of head and tail and other nodes. Will throw an error if you try to have a list remove a node that doesn't belong to it. ### Yallist.Node The class that holds the data and is actually the list. Call with `var n = new Node(value, previousNode, nextNode)` Note that if you do direct operations on Nodes themselves, it's very easy to get into weird states where the list is broken. Be careful :) #### node.next The next node in the list. #### node.prev The previous node in the list. #### node.value The data the node contains. #### node.list The list to which this node belongs. (Null if it does not belong to any list.) Compiler frontend for node.js ============================= Usage ----- For an up to date list of available command line options, see: ``` $> asc --help ``` API --- The API accepts the same options as the CLI but also lets you override stdout and stderr and/or provide a callback. Example: ```js const asc = require("assemblyscript/cli/asc"); asc.ready.then(() => { asc.main([ "myModule.ts", "--binaryFile", "myModule.wasm", "--optimize", "--sourceMap", "--measure" ], { stdout: process.stdout, stderr: process.stderr }, function(err) { if (err) throw err; ... }); }); ``` Available command line options can also be obtained programmatically: ```js const options = require("assemblyscript/cli/asc.json"); ... ``` You can also compile a source string directly, for example in a browser environment: ```js const asc = require("assemblyscript/cli/asc"); asc.ready.then(() => { const { binary, text, stdout, stderr } = asc.compileString(`...`, { optimize: 2 }); }); ... ``` # near-sdk-core This package contain a convenient interface for interacting with NEAR's host runtime. To see the functions that are provided by the host node see [`env.ts`](./assembly/env/env.ts). <img align="right" alt="Ajv logo" width="160" src="https://ajv.js.org/images/ajv_logo.png"> # Ajv: Another JSON Schema Validator The fastest JSON Schema validator for Node.js and browser. Supports draft-04/06/07. [](https://travis-ci.org/ajv-validator/ajv) [](https://www.npmjs.com/package/ajv) [](https://www.npmjs.com/package/ajv/v/7.0.0-beta.0) [](https://www.npmjs.com/package/ajv) [](https://coveralls.io/github/ajv-validator/ajv?branch=master) [](https://gitter.im/ajv-validator/ajv) [](https://github.com/sponsors/epoberezkin) ## Ajv v7 beta is released [Ajv version 7.0.0-beta.0](https://github.com/ajv-validator/ajv/tree/v7-beta) is released with these changes: - to reduce the mistakes in JSON schemas and unexpected validation results, [strict mode](./docs/strict-mode.md) is added - it prohibits ignored or ambiguous JSON Schema elements. - to make code injection from untrusted schemas impossible, [code generation](./docs/codegen.md) is fully re-written to be safe. - to simplify Ajv extensions, the new keyword API that is used by pre-defined keywords is available to user-defined keywords - it is much easier to define any keywords now, especially with subschemas. - schemas are compiled to ES6 code (ES5 code generation is supported with an option). - to improve reliability and maintainability the code is migrated to TypeScript. **Please note**: - the support for JSON-Schema draft-04 is removed - if you have schemas using "id" attributes you have to replace them with "\$id" (or continue using version 6 that will be supported until 02/28/2021). - all formats are separated to ajv-formats package - they have to be explicitely added if you use them. See [release notes](https://github.com/ajv-validator/ajv/releases/tag/v7.0.0-beta.0) for the details. To install the new version: ```bash npm install ajv@beta ``` See [Getting started with v7](https://github.com/ajv-validator/ajv/tree/v7-beta#usage) for code example. ## Mozilla MOSS grant and OpenJS Foundation [<img src="https://www.poberezkin.com/images/mozilla.png" width="240" height="68">](https://www.mozilla.org/en-US/moss/) &nbsp;&nbsp;&nbsp; [<img src="https://www.poberezkin.com/images/openjs.png" width="220" height="68">](https://openjsf.org/blog/2020/08/14/ajv-joins-openjs-foundation-as-an-incubation-project/) Ajv has been awarded a grant from Mozilla’s [Open Source Support (MOSS) program](https://www.mozilla.org/en-US/moss/) in the “Foundational Technology” track! It will sponsor the development of Ajv support of [JSON Schema version 2019-09](https://tools.ietf.org/html/draft-handrews-json-schema-02) and of [JSON Type Definition](https://tools.ietf.org/html/draft-ucarion-json-type-definition-04). Ajv also joined [OpenJS Foundation](https://openjsf.org/) – having this support will help ensure the longevity and stability of Ajv for all its users. This [blog post](https://www.poberezkin.com/posts/2020-08-14-ajv-json-validator-mozilla-open-source-grant-openjs-foundation.html) has more details. I am looking for the long term maintainers of Ajv – working with [ReadySet](https://www.thereadyset.co/), also sponsored by Mozilla, to establish clear guidelines for the role of a "maintainer" and the contribution standards, and to encourage a wider, more inclusive, contribution from the community. ## Please [sponsor Ajv development](https://github.com/sponsors/epoberezkin) Since I asked to support Ajv development 40 people and 6 organizations contributed via GitHub and OpenCollective - this support helped receiving the MOSS grant! Your continuing support is very important - the funds will be used to develop and maintain Ajv once the next major version is released. Please sponsor Ajv via: - [GitHub sponsors page](https://github.com/sponsors/epoberezkin) (GitHub will match it) - [Ajv Open Collective️](https://opencollective.com/ajv) Thank you. #### Open Collective sponsors <a href="https://opencollective.com/ajv"><img src="https://opencollective.com/ajv/individuals.svg?width=890"></a> <a href="https://opencollective.com/ajv/organization/0/website"><img src="https://opencollective.com/ajv/organization/0/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/1/website"><img src="https://opencollective.com/ajv/organization/1/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/2/website"><img src="https://opencollective.com/ajv/organization/2/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/3/website"><img src="https://opencollective.com/ajv/organization/3/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/4/website"><img src="https://opencollective.com/ajv/organization/4/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/5/website"><img src="https://opencollective.com/ajv/organization/5/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/6/website"><img src="https://opencollective.com/ajv/organization/6/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/7/website"><img src="https://opencollective.com/ajv/organization/7/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/8/website"><img src="https://opencollective.com/ajv/organization/8/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/9/website"><img src="https://opencollective.com/ajv/organization/9/avatar.svg"></a> ## Using version 6 [JSON Schema draft-07](http://json-schema.org/latest/json-schema-validation.html) is published. [Ajv version 6.0.0](https://github.com/ajv-validator/ajv/releases/tag/v6.0.0) that supports draft-07 is released. It may require either migrating your schemas or updating your code (to continue using draft-04 and v5 schemas, draft-06 schemas will be supported without changes). __Please note__: To use Ajv with draft-06 schemas you need to explicitly add the meta-schema to the validator instance: ```javascript ajv.addMetaSchema(require('ajv/lib/refs/json-schema-draft-06.json')); ``` To use Ajv with draft-04 schemas in addition to explicitly adding meta-schema you also need to use option schemaId: ```javascript var ajv = new Ajv({schemaId: 'id'}); // If you want to use both draft-04 and draft-06/07 schemas: // var ajv = new Ajv({schemaId: 'auto'}); ajv.addMetaSchema(require('ajv/lib/refs/json-schema-draft-04.json')); ``` ## Contents - [Performance](#performance) - [Features](#features) - [Getting started](#getting-started) - [Frequently Asked Questions](https://github.com/ajv-validator/ajv/blob/master/FAQ.md) - [Using in browser](#using-in-browser) - [Ajv and Content Security Policies (CSP)](#ajv-and-content-security-policies-csp) - [Command line interface](#command-line-interface) - Validation - [Keywords](#validation-keywords) - [Annotation keywords](#annotation-keywords) - [Formats](#formats) - [Combining schemas with $ref](#ref) - [$data reference](#data-reference) - NEW: [$merge and $patch keywords](#merge-and-patch-keywords) - [Defining custom keywords](#defining-custom-keywords) - [Asynchronous schema compilation](#asynchronous-schema-compilation) - [Asynchronous validation](#asynchronous-validation) - [Security considerations](#security-considerations) - [Security contact](#security-contact) - [Untrusted schemas](#untrusted-schemas) - [Circular references in objects](#circular-references-in-javascript-objects) - [Trusted schemas](#security-risks-of-trusted-schemas) - [ReDoS attack](#redos-attack) - Modifying data during validation - [Filtering data](#filtering-data) - [Assigning defaults](#assigning-defaults) - [Coercing data types](#coercing-data-types) - API - [Methods](#api) - [Options](#options) - [Validation errors](#validation-errors) - [Plugins](#plugins) - [Related packages](#related-packages) - [Some packages using Ajv](#some-packages-using-ajv) - [Tests, Contributing, Changes history](#tests) - [Support, Code of conduct, License](#open-source-software-support) ## Performance Ajv generates code using [doT templates](https://github.com/olado/doT) to turn JSON Schemas into super-fast validation functions that are efficient for v8 optimization. Currently Ajv is the fastest and the most standard compliant validator according to these benchmarks: - [json-schema-benchmark](https://github.com/ebdrup/json-schema-benchmark) - 50% faster than the second place - [jsck benchmark](https://github.com/pandastrike/jsck#benchmarks) - 20-190% faster - [z-schema benchmark](https://rawgit.com/zaggino/z-schema/master/benchmark/results.html) - [themis benchmark](https://cdn.rawgit.com/playlyfe/themis/master/benchmark/results.html) Performance of different validators by [json-schema-benchmark](https://github.com/ebdrup/json-schema-benchmark): [](https://github.com/ebdrup/json-schema-benchmark/blob/master/README.md#performance) ## Features - Ajv implements full JSON Schema [draft-06/07](http://json-schema.org/) and draft-04 standards: - all validation keywords (see [JSON Schema validation keywords](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md)) - full support of remote refs (remote schemas have to be added with `addSchema` or compiled to be available) - support of circular references between schemas - correct string lengths for strings with unicode pairs (can be turned off) - [formats](#formats) defined by JSON Schema draft-07 standard and custom formats (can be turned off) - [validates schemas against meta-schema](#api-validateschema) - supports [browsers](#using-in-browser) and Node.js 0.10-14.x - [asynchronous loading](#asynchronous-schema-compilation) of referenced schemas during compilation - "All errors" validation mode with [option allErrors](#options) - [error messages with parameters](#validation-errors) describing error reasons to allow creating custom error messages - i18n error messages support with [ajv-i18n](https://github.com/ajv-validator/ajv-i18n) package - [filtering data](#filtering-data) from additional properties - [assigning defaults](#assigning-defaults) to missing properties and items - [coercing data](#coercing-data-types) to the types specified in `type` keywords - [custom keywords](#defining-custom-keywords) - draft-06/07 keywords `const`, `contains`, `propertyNames` and `if/then/else` - draft-06 boolean schemas (`true`/`false` as a schema to always pass/fail). - keywords `switch`, `patternRequired`, `formatMaximum` / `formatMinimum` and `formatExclusiveMaximum` / `formatExclusiveMinimum` from [JSON Schema extension proposals](https://github.com/json-schema/json-schema/wiki/v5-Proposals) with [ajv-keywords](https://github.com/ajv-validator/ajv-keywords) package - [$data reference](#data-reference) to use values from the validated data as values for the schema keywords - [asynchronous validation](#asynchronous-validation) of custom formats and keywords ## Install ``` npm install ajv ``` ## <a name="usage"></a>Getting started Try it in the Node.js REPL: https://tonicdev.com/npm/ajv The fastest validation call: ```javascript // Node.js require: var Ajv = require('ajv'); // or ESM/TypeScript import import Ajv from 'ajv'; var ajv = new Ajv(); // options can be passed, e.g. {allErrors: true} var validate = ajv.compile(schema); var valid = validate(data); if (!valid) console.log(validate.errors); ``` or with less code ```javascript // ... var valid = ajv.validate(schema, data); if (!valid) console.log(ajv.errors); // ... ``` or ```javascript // ... var valid = ajv.addSchema(schema, 'mySchema') .validate('mySchema', data); if (!valid) console.log(ajv.errorsText()); // ... ``` See [API](#api) and [Options](#options) for more details. Ajv compiles schemas to functions and caches them in all cases (using schema serialized with [fast-json-stable-stringify](https://github.com/epoberezkin/fast-json-stable-stringify) or a custom function as a key), so that the next time the same schema is used (not necessarily the same object instance) it won't be compiled again. The best performance is achieved when using compiled functions returned by `compile` or `getSchema` methods (there is no additional function call). __Please note__: every time a validation function or `ajv.validate` are called `errors` property is overwritten. You need to copy `errors` array reference to another variable if you want to use it later (e.g., in the callback). See [Validation errors](#validation-errors) __Note for TypeScript users__: `ajv` provides its own TypeScript declarations out of the box, so you don't need to install the deprecated `@types/ajv` module. ## Using in browser You can require Ajv directly from the code you browserify - in this case Ajv will be a part of your bundle. If you need to use Ajv in several bundles you can create a separate UMD bundle using `npm run bundle` script (thanks to [siddo420](https://github.com/siddo420)). Then you need to load Ajv in the browser: ```html <script src="ajv.min.js"></script> ``` This bundle can be used with different module systems; it creates global `Ajv` if no module system is found. The browser bundle is available on [cdnjs](https://cdnjs.com/libraries/ajv). Ajv is tested with these browsers: [](https://saucelabs.com/u/epoberezkin) __Please note__: some frameworks, e.g. Dojo, may redefine global require in such way that is not compatible with CommonJS module format. In such case Ajv bundle has to be loaded before the framework and then you can use global Ajv (see issue [#234](https://github.com/ajv-validator/ajv/issues/234)). ### Ajv and Content Security Policies (CSP) If you're using Ajv to compile a schema (the typical use) in a browser document that is loaded with a Content Security Policy (CSP), that policy will require a `script-src` directive that includes the value `'unsafe-eval'`. :warning: NOTE, however, that `unsafe-eval` is NOT recommended in a secure CSP[[1]](https://developer.chrome.com/extensions/contentSecurityPolicy#relaxing-eval), as it has the potential to open the document to cross-site scripting (XSS) attacks. In order to make use of Ajv without easing your CSP, you can [pre-compile a schema using the CLI](https://github.com/ajv-validator/ajv-cli#compile-schemas). This will transpile the schema JSON into a JavaScript file that exports a `validate` function that works simlarly to a schema compiled at runtime. Note that pre-compilation of schemas is performed using [ajv-pack](https://github.com/ajv-validator/ajv-pack) and there are [some limitations to the schema features it can compile](https://github.com/ajv-validator/ajv-pack#limitations). A successfully pre-compiled schema is equivalent to the same schema compiled at runtime. ## Command line interface CLI is available as a separate npm package [ajv-cli](https://github.com/ajv-validator/ajv-cli). It supports: - compiling JSON Schemas to test their validity - BETA: generating standalone module exporting a validation function to be used without Ajv (using [ajv-pack](https://github.com/ajv-validator/ajv-pack)) - migrate schemas to draft-07 (using [json-schema-migrate](https://github.com/epoberezkin/json-schema-migrate)) - validating data file(s) against JSON Schema - testing expected validity of data against JSON Schema - referenced schemas - custom meta-schemas - files in JSON, JSON5, YAML, and JavaScript format - all Ajv options - reporting changes in data after validation in [JSON-patch](https://tools.ietf.org/html/rfc6902) format ## Validation keywords Ajv supports all validation keywords from draft-07 of JSON Schema standard: - [type](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#type) - [for numbers](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#keywords-for-numbers) - maximum, minimum, exclusiveMaximum, exclusiveMinimum, multipleOf - [for strings](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#keywords-for-strings) - maxLength, minLength, pattern, format - [for arrays](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#keywords-for-arrays) - maxItems, minItems, uniqueItems, items, additionalItems, [contains](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#contains) - [for objects](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#keywords-for-objects) - maxProperties, minProperties, required, properties, patternProperties, additionalProperties, dependencies, [propertyNames](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#propertynames) - [for all types](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#keywords-for-all-types) - enum, [const](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#const) - [compound keywords](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#compound-keywords) - not, oneOf, anyOf, allOf, [if/then/else](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#ifthenelse) With [ajv-keywords](https://github.com/ajv-validator/ajv-keywords) package Ajv also supports validation keywords from [JSON Schema extension proposals](https://github.com/json-schema/json-schema/wiki/v5-Proposals) for JSON Schema standard: - [patternRequired](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#patternrequired-proposed) - like `required` but with patterns that some property should match. - [formatMaximum, formatMinimum, formatExclusiveMaximum, formatExclusiveMinimum](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#formatmaximum--formatminimum-and-exclusiveformatmaximum--exclusiveformatminimum-proposed) - setting limits for date, time, etc. See [JSON Schema validation keywords](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md) for more details. ## Annotation keywords JSON Schema specification defines several annotation keywords that describe schema itself but do not perform any validation. - `title` and `description`: information about the data represented by that schema - `$comment` (NEW in draft-07): information for developers. With option `$comment` Ajv logs or passes the comment string to the user-supplied function. See [Options](#options). - `default`: a default value of the data instance, see [Assigning defaults](#assigning-defaults). - `examples` (NEW in draft-06): an array of data instances. Ajv does not check the validity of these instances against the schema. - `readOnly` and `writeOnly` (NEW in draft-07): marks data-instance as read-only or write-only in relation to the source of the data (database, api, etc.). - `contentEncoding`: [RFC 2045](https://tools.ietf.org/html/rfc2045#section-6.1 ), e.g., "base64". - `contentMediaType`: [RFC 2046](https://tools.ietf.org/html/rfc2046), e.g., "image/png". __Please note__: Ajv does not implement validation of the keywords `examples`, `contentEncoding` and `contentMediaType` but it reserves them. If you want to create a plugin that implements some of them, it should remove these keywords from the instance. ## Formats Ajv implements formats defined by JSON Schema specification and several other formats. It is recommended NOT to use "format" keyword implementations with untrusted data, as they use potentially unsafe regular expressions - see [ReDoS attack](#redos-attack). __Please note__: if you need to use "format" keyword to validate untrusted data, you MUST assess their suitability and safety for your validation scenarios. The following formats are implemented for string validation with "format" keyword: - _date_: full-date according to [RFC3339](http://tools.ietf.org/html/rfc3339#section-5.6). - _time_: time with optional time-zone. - _date-time_: date-time from the same source (time-zone is mandatory). `date`, `time` and `date-time` validate ranges in `full` mode and only regexp in `fast` mode (see [options](#options)). - _uri_: full URI. - _uri-reference_: URI reference, including full and relative URIs. - _uri-template_: URI template according to [RFC6570](https://tools.ietf.org/html/rfc6570) - _url_ (deprecated): [URL record](https://url.spec.whatwg.org/#concept-url). - _email_: email address. - _hostname_: host name according to [RFC1034](http://tools.ietf.org/html/rfc1034#section-3.5). - _ipv4_: IP address v4. - _ipv6_: IP address v6. - _regex_: tests whether a string is a valid regular expression by passing it to RegExp constructor. - _uuid_: Universally Unique IDentifier according to [RFC4122](http://tools.ietf.org/html/rfc4122). - _json-pointer_: JSON-pointer according to [RFC6901](https://tools.ietf.org/html/rfc6901). - _relative-json-pointer_: relative JSON-pointer according to [this draft](http://tools.ietf.org/html/draft-luff-relative-json-pointer-00). __Please note__: JSON Schema draft-07 also defines formats `iri`, `iri-reference`, `idn-hostname` and `idn-email` for URLs, hostnames and emails with international characters. Ajv does not implement these formats. If you create Ajv plugin that implements them please make a PR to mention this plugin here. There are two modes of format validation: `fast` and `full`. This mode affects formats `date`, `time`, `date-time`, `uri`, `uri-reference`, and `email`. See [Options](#options) for details. You can add additional formats and replace any of the formats above using [addFormat](#api-addformat) method. The option `unknownFormats` allows changing the default behaviour when an unknown format is encountered. In this case Ajv can either fail schema compilation (default) or ignore it (default in versions before 5.0.0). You also can allow specific format(s) that will be ignored. See [Options](#options) for details. You can find regular expressions used for format validation and the sources that were used in [formats.js](https://github.com/ajv-validator/ajv/blob/master/lib/compile/formats.js). ## <a name="ref"></a>Combining schemas with $ref You can structure your validation logic across multiple schema files and have schemas reference each other using `$ref` keyword. Example: ```javascript var schema = { "$id": "http://example.com/schemas/schema.json", "type": "object", "properties": { "foo": { "$ref": "defs.json#/definitions/int" }, "bar": { "$ref": "defs.json#/definitions/str" } } }; var defsSchema = { "$id": "http://example.com/schemas/defs.json", "definitions": { "int": { "type": "integer" }, "str": { "type": "string" } } }; ``` Now to compile your schema you can either pass all schemas to Ajv instance: ```javascript var ajv = new Ajv({schemas: [schema, defsSchema]}); var validate = ajv.getSchema('http://example.com/schemas/schema.json'); ``` or use `addSchema` method: ```javascript var ajv = new Ajv; var validate = ajv.addSchema(defsSchema) .compile(schema); ``` See [Options](#options) and [addSchema](#api) method. __Please note__: - `$ref` is resolved as the uri-reference using schema $id as the base URI (see the example). - References can be recursive (and mutually recursive) to implement the schemas for different data structures (such as linked lists, trees, graphs, etc.). - You don't have to host your schema files at the URIs that you use as schema $id. These URIs are only used to identify the schemas, and according to JSON Schema specification validators should not expect to be able to download the schemas from these URIs. - The actual location of the schema file in the file system is not used. - You can pass the identifier of the schema as the second parameter of `addSchema` method or as a property name in `schemas` option. This identifier can be used instead of (or in addition to) schema $id. - You cannot have the same $id (or the schema identifier) used for more than one schema - the exception will be thrown. - You can implement dynamic resolution of the referenced schemas using `compileAsync` method. In this way you can store schemas in any system (files, web, database, etc.) and reference them without explicitly adding to Ajv instance. See [Asynchronous schema compilation](#asynchronous-schema-compilation). ## $data reference With `$data` option you can use values from the validated data as the values for the schema keywords. See [proposal](https://github.com/json-schema-org/json-schema-spec/issues/51) for more information about how it works. `$data` reference is supported in the keywords: const, enum, format, maximum/minimum, exclusiveMaximum / exclusiveMinimum, maxLength / minLength, maxItems / minItems, maxProperties / minProperties, formatMaximum / formatMinimum, formatExclusiveMaximum / formatExclusiveMinimum, multipleOf, pattern, required, uniqueItems. The value of "$data" should be a [JSON-pointer](https://tools.ietf.org/html/rfc6901) to the data (the root is always the top level data object, even if the $data reference is inside a referenced subschema) or a [relative JSON-pointer](http://tools.ietf.org/html/draft-luff-relative-json-pointer-00) (it is relative to the current point in data; if the $data reference is inside a referenced subschema it cannot point to the data outside of the root level for this subschema). Examples. This schema requires that the value in property `smaller` is less or equal than the value in the property larger: ```javascript var ajv = new Ajv({$data: true}); var schema = { "properties": { "smaller": { "type": "number", "maximum": { "$data": "1/larger" } }, "larger": { "type": "number" } } }; var validData = { smaller: 5, larger: 7 }; ajv.validate(schema, validData); // true ``` This schema requires that the properties have the same format as their field names: ```javascript var schema = { "additionalProperties": { "type": "string", "format": { "$data": "0#" } } }; var validData = { 'date-time': '1963-06-19T08:30:06.283185Z', email: 'joe.bloggs@example.com' } ``` `$data` reference is resolved safely - it won't throw even if some property is undefined. If `$data` resolves to `undefined` the validation succeeds (with the exclusion of `const` keyword). If `$data` resolves to incorrect type (e.g. not "number" for maximum keyword) the validation fails. ## $merge and $patch keywords With the package [ajv-merge-patch](https://github.com/ajv-validator/ajv-merge-patch) you can use the keywords `$merge` and `$patch` that allow extending JSON Schemas with patches using formats [JSON Merge Patch (RFC 7396)](https://tools.ietf.org/html/rfc7396) and [JSON Patch (RFC 6902)](https://tools.ietf.org/html/rfc6902). To add keywords `$merge` and `$patch` to Ajv instance use this code: ```javascript require('ajv-merge-patch')(ajv); ``` Examples. Using `$merge`: ```json { "$merge": { "source": { "type": "object", "properties": { "p": { "type": "string" } }, "additionalProperties": false }, "with": { "properties": { "q": { "type": "number" } } } } } ``` Using `$patch`: ```json { "$patch": { "source": { "type": "object", "properties": { "p": { "type": "string" } }, "additionalProperties": false }, "with": [ { "op": "add", "path": "/properties/q", "value": { "type": "number" } } ] } } ``` The schemas above are equivalent to this schema: ```json { "type": "object", "properties": { "p": { "type": "string" }, "q": { "type": "number" } }, "additionalProperties": false } ``` The properties `source` and `with` in the keywords `$merge` and `$patch` can use absolute or relative `$ref` to point to other schemas previously added to the Ajv instance or to the fragments of the current schema. See the package [ajv-merge-patch](https://github.com/ajv-validator/ajv-merge-patch) for more information. ## Defining custom keywords The advantages of using custom keywords are: - allow creating validation scenarios that cannot be expressed using JSON Schema - simplify your schemas - help bringing a bigger part of the validation logic to your schemas - make your schemas more expressive, less verbose and closer to your application domain - implement custom data processors that modify your data (`modifying` option MUST be used in keyword definition) and/or create side effects while the data is being validated If a keyword is used only for side-effects and its validation result is pre-defined, use option `valid: true/false` in keyword definition to simplify both generated code (no error handling in case of `valid: true`) and your keyword functions (no need to return any validation result). The concerns you have to be aware of when extending JSON Schema standard with custom keywords are the portability and understanding of your schemas. You will have to support these custom keywords on other platforms and to properly document these keywords so that everybody can understand them in your schemas. You can define custom keywords with [addKeyword](#api-addkeyword) method. Keywords are defined on the `ajv` instance level - new instances will not have previously defined keywords. Ajv allows defining keywords with: - validation function - compilation function - macro function - inline compilation function that should return code (as string) that will be inlined in the currently compiled schema. Example. `range` and `exclusiveRange` keywords using compiled schema: ```javascript ajv.addKeyword('range', { type: 'number', compile: function (sch, parentSchema) { var min = sch[0]; var max = sch[1]; return parentSchema.exclusiveRange === true ? function (data) { return data > min && data < max; } : function (data) { return data >= min && data <= max; } } }); var schema = { "range": [2, 4], "exclusiveRange": true }; var validate = ajv.compile(schema); console.log(validate(2.01)); // true console.log(validate(3.99)); // true console.log(validate(2)); // false console.log(validate(4)); // false ``` Several custom keywords (typeof, instanceof, range and propertyNames) are defined in [ajv-keywords](https://github.com/ajv-validator/ajv-keywords) package - they can be used for your schemas and as a starting point for your own custom keywords. See [Defining custom keywords](https://github.com/ajv-validator/ajv/blob/master/CUSTOM.md) for more details. ## Asynchronous schema compilation During asynchronous compilation remote references are loaded using supplied function. See `compileAsync` [method](#api-compileAsync) and `loadSchema` [option](#options). Example: ```javascript var ajv = new Ajv({ loadSchema: loadSchema }); ajv.compileAsync(schema).then(function (validate) { var valid = validate(data); // ... }); function loadSchema(uri) { return request.json(uri).then(function (res) { if (res.statusCode >= 400) throw new Error('Loading error: ' + res.statusCode); return res.body; }); } ``` __Please note__: [Option](#options) `missingRefs` should NOT be set to `"ignore"` or `"fail"` for asynchronous compilation to work. ## Asynchronous validation Example in Node.js REPL: https://tonicdev.com/esp/ajv-asynchronous-validation You can define custom formats and keywords that perform validation asynchronously by accessing database or some other service. You should add `async: true` in the keyword or format definition (see [addFormat](#api-addformat), [addKeyword](#api-addkeyword) and [Defining custom keywords](#defining-custom-keywords)). If your schema uses asynchronous formats/keywords or refers to some schema that contains them it should have `"$async": true` keyword so that Ajv can compile it correctly. If asynchronous format/keyword or reference to asynchronous schema is used in the schema without `$async` keyword Ajv will throw an exception during schema compilation. __Please note__: all asynchronous subschemas that are referenced from the current or other schemas should have `"$async": true` keyword as well, otherwise the schema compilation will fail. Validation function for an asynchronous custom format/keyword should return a promise that resolves with `true` or `false` (or rejects with `new Ajv.ValidationError(errors)` if you want to return custom errors from the keyword function). Ajv compiles asynchronous schemas to [es7 async functions](http://tc39.github.io/ecmascript-asyncawait/) that can optionally be transpiled with [nodent](https://github.com/MatAtBread/nodent). Async functions are supported in Node.js 7+ and all modern browsers. You can also supply any other transpiler as a function via `processCode` option. See [Options](#options). The compiled validation function has `$async: true` property (if the schema is asynchronous), so you can differentiate these functions if you are using both synchronous and asynchronous schemas. Validation result will be a promise that resolves with validated data or rejects with an exception `Ajv.ValidationError` that contains the array of validation errors in `errors` property. Example: ```javascript var ajv = new Ajv; // require('ajv-async')(ajv); ajv.addKeyword('idExists', { async: true, type: 'number', validate: checkIdExists }); function checkIdExists(schema, data) { return knex(schema.table) .select('id') .where('id', data) .then(function (rows) { return !!rows.length; // true if record is found }); } var schema = { "$async": true, "properties": { "userId": { "type": "integer", "idExists": { "table": "users" } }, "postId": { "type": "integer", "idExists": { "table": "posts" } } } }; var validate = ajv.compile(schema); validate({ userId: 1, postId: 19 }) .then(function (data) { console.log('Data is valid', data); // { userId: 1, postId: 19 } }) .catch(function (err) { if (!(err instanceof Ajv.ValidationError)) throw err; // data is invalid console.log('Validation errors:', err.errors); }); ``` ### Using transpilers with asynchronous validation functions. [ajv-async](https://github.com/ajv-validator/ajv-async) uses [nodent](https://github.com/MatAtBread/nodent) to transpile async functions. To use another transpiler you should separately install it (or load its bundle in the browser). #### Using nodent ```javascript var ajv = new Ajv; require('ajv-async')(ajv); // in the browser if you want to load ajv-async bundle separately you can: // window.ajvAsync(ajv); var validate = ajv.compile(schema); // transpiled es7 async function validate(data).then(successFunc).catch(errorFunc); ``` #### Using other transpilers ```javascript var ajv = new Ajv({ processCode: transpileFunc }); var validate = ajv.compile(schema); // transpiled es7 async function validate(data).then(successFunc).catch(errorFunc); ``` See [Options](#options). ## Security considerations JSON Schema, if properly used, can replace data sanitisation. It doesn't replace other API security considerations. It also introduces additional security aspects to consider. ##### Security contact To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. Please do NOT report security vulnerabilities via GitHub issues. ##### Untrusted schemas Ajv treats JSON schemas as trusted as your application code. This security model is based on the most common use case, when the schemas are static and bundled together with the application. If your schemas are received from untrusted sources (or generated from untrusted data) there are several scenarios you need to prevent: - compiling schemas can cause stack overflow (if they are too deep) - compiling schemas can be slow (e.g. [#557](https://github.com/ajv-validator/ajv/issues/557)) - validating certain data can be slow It is difficult to predict all the scenarios, but at the very least it may help to limit the size of untrusted schemas (e.g. limit JSON string length) and also the maximum schema object depth (that can be high for relatively small JSON strings). You also may want to mitigate slow regular expressions in `pattern` and `patternProperties` keywords. Regardless the measures you take, using untrusted schemas increases security risks. ##### Circular references in JavaScript objects Ajv does not support schemas and validated data that have circular references in objects. See [issue #802](https://github.com/ajv-validator/ajv/issues/802). An attempt to compile such schemas or validate such data would cause stack overflow (or will not complete in case of asynchronous validation). Depending on the parser you use, untrusted data can lead to circular references. ##### Security risks of trusted schemas Some keywords in JSON Schemas can lead to very slow validation for certain data. These keywords include (but may be not limited to): - `pattern` and `format` for large strings - in some cases using `maxLength` can help mitigate it, but certain regular expressions can lead to exponential validation time even with relatively short strings (see [ReDoS attack](#redos-attack)). - `patternProperties` for large property names - use `propertyNames` to mitigate, but some regular expressions can have exponential evaluation time as well. - `uniqueItems` for large non-scalar arrays - use `maxItems` to mitigate __Please note__: The suggestions above to prevent slow validation would only work if you do NOT use `allErrors: true` in production code (using it would continue validation after validation errors). You can validate your JSON schemas against [this meta-schema](https://github.com/ajv-validator/ajv/blob/master/lib/refs/json-schema-secure.json) to check that these recommendations are followed: ```javascript const isSchemaSecure = ajv.compile(require('ajv/lib/refs/json-schema-secure.json')); const schema1 = {format: 'email'}; isSchemaSecure(schema1); // false const schema2 = {format: 'email', maxLength: MAX_LENGTH}; isSchemaSecure(schema2); // true ``` __Please note__: following all these recommendation is not a guarantee that validation of untrusted data is safe - it can still lead to some undesirable results. ##### Content Security Policies (CSP) See [Ajv and Content Security Policies (CSP)](#ajv-and-content-security-policies-csp) ## ReDoS attack Certain regular expressions can lead to the exponential evaluation time even with relatively short strings. Please assess the regular expressions you use in the schemas on their vulnerability to this attack - see [safe-regex](https://github.com/substack/safe-regex), for example. __Please note__: some formats that Ajv implements use [regular expressions](https://github.com/ajv-validator/ajv/blob/master/lib/compile/formats.js) that can be vulnerable to ReDoS attack, so if you use Ajv to validate data from untrusted sources __it is strongly recommended__ to consider the following: - making assessment of "format" implementations in Ajv. - using `format: 'fast'` option that simplifies some of the regular expressions (although it does not guarantee that they are safe). - replacing format implementations provided by Ajv with your own implementations of "format" keyword that either uses different regular expressions or another approach to format validation. Please see [addFormat](#api-addformat) method. - disabling format validation by ignoring "format" keyword with option `format: false` Whatever mitigation you choose, please assume all formats provided by Ajv as potentially unsafe and make your own assessment of their suitability for your validation scenarios. ## Filtering data With [option `removeAdditional`](#options) (added by [andyscott](https://github.com/andyscott)) you can filter data during the validation. This option modifies original data. Example: ```javascript var ajv = new Ajv({ removeAdditional: true }); var schema = { "additionalProperties": false, "properties": { "foo": { "type": "number" }, "bar": { "additionalProperties": { "type": "number" }, "properties": { "baz": { "type": "string" } } } } } var data = { "foo": 0, "additional1": 1, // will be removed; `additionalProperties` == false "bar": { "baz": "abc", "additional2": 2 // will NOT be removed; `additionalProperties` != false }, } var validate = ajv.compile(schema); console.log(validate(data)); // true console.log(data); // { "foo": 0, "bar": { "baz": "abc", "additional2": 2 } ``` If `removeAdditional` option in the example above were `"all"` then both `additional1` and `additional2` properties would have been removed. If the option were `"failing"` then property `additional1` would have been removed regardless of its value and property `additional2` would have been removed only if its value were failing the schema in the inner `additionalProperties` (so in the example above it would have stayed because it passes the schema, but any non-number would have been removed). __Please note__: If you use `removeAdditional` option with `additionalProperties` keyword inside `anyOf`/`oneOf` keywords your validation can fail with this schema, for example: ```json { "type": "object", "oneOf": [ { "properties": { "foo": { "type": "string" } }, "required": [ "foo" ], "additionalProperties": false }, { "properties": { "bar": { "type": "integer" } }, "required": [ "bar" ], "additionalProperties": false } ] } ``` The intention of the schema above is to allow objects with either the string property "foo" or the integer property "bar", but not with both and not with any other properties. With the option `removeAdditional: true` the validation will pass for the object `{ "foo": "abc"}` but will fail for the object `{"bar": 1}`. It happens because while the first subschema in `oneOf` is validated, the property `bar` is removed because it is an additional property according to the standard (because it is not included in `properties` keyword in the same schema). While this behaviour is unexpected (issues [#129](https://github.com/ajv-validator/ajv/issues/129), [#134](https://github.com/ajv-validator/ajv/issues/134)), it is correct. To have the expected behaviour (both objects are allowed and additional properties are removed) the schema has to be refactored in this way: ```json { "type": "object", "properties": { "foo": { "type": "string" }, "bar": { "type": "integer" } }, "additionalProperties": false, "oneOf": [ { "required": [ "foo" ] }, { "required": [ "bar" ] } ] } ``` The schema above is also more efficient - it will compile into a faster function. ## Assigning defaults With [option `useDefaults`](#options) Ajv will assign values from `default` keyword in the schemas of `properties` and `items` (when it is the array of schemas) to the missing properties and items. With the option value `"empty"` properties and items equal to `null` or `""` (empty string) will be considered missing and assigned defaults. This option modifies original data. __Please note__: the default value is inserted in the generated validation code as a literal, so the value inserted in the data will be the deep clone of the default in the schema. Example 1 (`default` in `properties`): ```javascript var ajv = new Ajv({ useDefaults: true }); var schema = { "type": "object", "properties": { "foo": { "type": "number" }, "bar": { "type": "string", "default": "baz" } }, "required": [ "foo", "bar" ] }; var data = { "foo": 1 }; var validate = ajv.compile(schema); console.log(validate(data)); // true console.log(data); // { "foo": 1, "bar": "baz" } ``` Example 2 (`default` in `items`): ```javascript var schema = { "type": "array", "items": [ { "type": "number" }, { "type": "string", "default": "foo" } ] } var data = [ 1 ]; var validate = ajv.compile(schema); console.log(validate(data)); // true console.log(data); // [ 1, "foo" ] ``` `default` keywords in other cases are ignored: - not in `properties` or `items` subschemas - in schemas inside `anyOf`, `oneOf` and `not` (see [#42](https://github.com/ajv-validator/ajv/issues/42)) - in `if` subschema of `switch` keyword - in schemas generated by custom macro keywords The [`strictDefaults` option](#options) customizes Ajv's behavior for the defaults that Ajv ignores (`true` raises an error, and `"log"` outputs a warning). ## Coercing data types When you are validating user inputs all your data properties are usually strings. The option `coerceTypes` allows you to have your data types coerced to the types specified in your schema `type` keywords, both to pass the validation and to use the correctly typed data afterwards. This option modifies original data. __Please note__: if you pass a scalar value to the validating function its type will be coerced and it will pass the validation, but the value of the variable you pass won't be updated because scalars are passed by value. Example 1: ```javascript var ajv = new Ajv({ coerceTypes: true }); var schema = { "type": "object", "properties": { "foo": { "type": "number" }, "bar": { "type": "boolean" } }, "required": [ "foo", "bar" ] }; var data = { "foo": "1", "bar": "false" }; var validate = ajv.compile(schema); console.log(validate(data)); // true console.log(data); // { "foo": 1, "bar": false } ``` Example 2 (array coercions): ```javascript var ajv = new Ajv({ coerceTypes: 'array' }); var schema = { "properties": { "foo": { "type": "array", "items": { "type": "number" } }, "bar": { "type": "boolean" } } }; var data = { "foo": "1", "bar": ["false"] }; var validate = ajv.compile(schema); console.log(validate(data)); // true console.log(data); // { "foo": [1], "bar": false } ``` The coercion rules, as you can see from the example, are different from JavaScript both to validate user input as expected and to have the coercion reversible (to correctly validate cases where different types are defined in subschemas of "anyOf" and other compound keywords). See [Coercion rules](https://github.com/ajv-validator/ajv/blob/master/COERCION.md) for details. ## API ##### new Ajv(Object options) -&gt; Object Create Ajv instance. ##### .compile(Object schema) -&gt; Function&lt;Object data&gt; Generate validating function and cache the compiled schema for future use. Validating function returns a boolean value. This function has properties `errors` and `schema`. Errors encountered during the last validation are assigned to `errors` property (it is assigned `null` if there was no errors). `schema` property contains the reference to the original schema. The schema passed to this method will be validated against meta-schema unless `validateSchema` option is false. If schema is invalid, an error will be thrown. See [options](#options). ##### <a name="api-compileAsync"></a>.compileAsync(Object schema [, Boolean meta] [, Function callback]) -&gt; Promise Asynchronous version of `compile` method that loads missing remote schemas using asynchronous function in `options.loadSchema`. This function returns a Promise that resolves to a validation function. An optional callback passed to `compileAsync` will be called with 2 parameters: error (or null) and validating function. The returned promise will reject (and the callback will be called with an error) when: - missing schema can't be loaded (`loadSchema` returns a Promise that rejects). - a schema containing a missing reference is loaded, but the reference cannot be resolved. - schema (or some loaded/referenced schema) is invalid. The function compiles schema and loads the first missing schema (or meta-schema) until all missing schemas are loaded. You can asynchronously compile meta-schema by passing `true` as the second parameter. See example in [Asynchronous compilation](#asynchronous-schema-compilation). ##### .validate(Object schema|String key|String ref, data) -&gt; Boolean Validate data using passed schema (it will be compiled and cached). Instead of the schema you can use the key that was previously passed to `addSchema`, the schema id if it was present in the schema or any previously resolved reference. Validation errors will be available in the `errors` property of Ajv instance (`null` if there were no errors). __Please note__: every time this method is called the errors are overwritten so you need to copy them to another variable if you want to use them later. If the schema is asynchronous (has `$async` keyword on the top level) this method returns a Promise. See [Asynchronous validation](#asynchronous-validation). ##### .addSchema(Array&lt;Object&gt;|Object schema [, String key]) -&gt; Ajv Add schema(s) to validator instance. This method does not compile schemas (but it still validates them). Because of that dependencies can be added in any order and circular dependencies are supported. It also prevents unnecessary compilation of schemas that are containers for other schemas but not used as a whole. Array of schemas can be passed (schemas should have ids), the second parameter will be ignored. Key can be passed that can be used to reference the schema and will be used as the schema id if there is no id inside the schema. If the key is not passed, the schema id will be used as the key. Once the schema is added, it (and all the references inside it) can be referenced in other schemas and used to validate data. Although `addSchema` does not compile schemas, explicit compilation is not required - the schema will be compiled when it is used first time. By default the schema is validated against meta-schema before it is added, and if the schema does not pass validation the exception is thrown. This behaviour is controlled by `validateSchema` option. __Please note__: Ajv uses the [method chaining syntax](https://en.wikipedia.org/wiki/Method_chaining) for all methods with the prefix `add*` and `remove*`. This allows you to do nice things like the following. ```javascript var validate = new Ajv().addSchema(schema).addFormat(name, regex).getSchema(uri); ``` ##### .addMetaSchema(Array&lt;Object&gt;|Object schema [, String key]) -&gt; Ajv Adds meta schema(s) that can be used to validate other schemas. That function should be used instead of `addSchema` because there may be instance options that would compile a meta schema incorrectly (at the moment it is `removeAdditional` option). There is no need to explicitly add draft-07 meta schema (http://json-schema.org/draft-07/schema) - it is added by default, unless option `meta` is set to `false`. You only need to use it if you have a changed meta-schema that you want to use to validate your schemas. See `validateSchema`. ##### <a name="api-validateschema"></a>.validateSchema(Object schema) -&gt; Boolean Validates schema. This method should be used to validate schemas rather than `validate` due to the inconsistency of `uri` format in JSON Schema standard. By default this method is called automatically when the schema is added, so you rarely need to use it directly. If schema doesn't have `$schema` property, it is validated against draft 6 meta-schema (option `meta` should not be false). If schema has `$schema` property, then the schema with this id (that should be previously added) is used to validate passed schema. Errors will be available at `ajv.errors`. ##### .getSchema(String key) -&gt; Function&lt;Object data&gt; Retrieve compiled schema previously added with `addSchema` by the key passed to `addSchema` or by its full reference (id). The returned validating function has `schema` property with the reference to the original schema. ##### .removeSchema([Object schema|String key|String ref|RegExp pattern]) -&gt; Ajv Remove added/cached schema. Even if schema is referenced by other schemas it can be safely removed as dependent schemas have local references. Schema can be removed using: - key passed to `addSchema` - it's full reference (id) - RegExp that should match schema id or key (meta-schemas won't be removed) - actual schema object that will be stable-stringified to remove schema from cache If no parameter is passed all schemas but meta-schemas will be removed and the cache will be cleared. ##### <a name="api-addformat"></a>.addFormat(String name, String|RegExp|Function|Object format) -&gt; Ajv Add custom format to validate strings or numbers. It can also be used to replace pre-defined formats for Ajv instance. Strings are converted to RegExp. Function should return validation result as `true` or `false`. If object is passed it should have properties `validate`, `compare` and `async`: - _validate_: a string, RegExp or a function as described above. - _compare_: an optional comparison function that accepts two strings and compares them according to the format meaning. This function is used with keywords `formatMaximum`/`formatMinimum` (defined in [ajv-keywords](https://github.com/ajv-validator/ajv-keywords) package). It should return `1` if the first value is bigger than the second value, `-1` if it is smaller and `0` if it is equal. - _async_: an optional `true` value if `validate` is an asynchronous function; in this case it should return a promise that resolves with a value `true` or `false`. - _type_: an optional type of data that the format applies to. It can be `"string"` (default) or `"number"` (see https://github.com/ajv-validator/ajv/issues/291#issuecomment-259923858). If the type of data is different, the validation will pass. Custom formats can be also added via `formats` option. ##### <a name="api-addkeyword"></a>.addKeyword(String keyword, Object definition) -&gt; Ajv Add custom validation keyword to Ajv instance. Keyword should be different from all standard JSON Schema keywords and different from previously defined keywords. There is no way to redefine keywords or to remove keyword definition from the instance. Keyword must start with a letter, `_` or `$`, and may continue with letters, numbers, `_`, `$`, or `-`. It is recommended to use an application-specific prefix for keywords to avoid current and future name collisions. Example Keywords: - `"xyz-example"`: valid, and uses prefix for the xyz project to avoid name collisions. - `"example"`: valid, but not recommended as it could collide with future versions of JSON Schema etc. - `"3-example"`: invalid as numbers are not allowed to be the first character in a keyword Keyword definition is an object with the following properties: - _type_: optional string or array of strings with data type(s) that the keyword applies to. If not present, the keyword will apply to all types. - _validate_: validating function - _compile_: compiling function - _macro_: macro function - _inline_: compiling function that returns code (as string) - _schema_: an optional `false` value used with "validate" keyword to not pass schema - _metaSchema_: an optional meta-schema for keyword schema - _dependencies_: an optional list of properties that must be present in the parent schema - it will be checked during schema compilation - _modifying_: `true` MUST be passed if keyword modifies data - _statements_: `true` can be passed in case inline keyword generates statements (as opposed to expression) - _valid_: pass `true`/`false` to pre-define validation result, the result returned from validation function will be ignored. This option cannot be used with macro keywords. - _$data_: an optional `true` value to support [$data reference](#data-reference) as the value of custom keyword. The reference will be resolved at validation time. If the keyword has meta-schema it would be extended to allow $data and it will be used to validate the resolved value. Supporting $data reference requires that keyword has validating function (as the only option or in addition to compile, macro or inline function). - _async_: an optional `true` value if the validation function is asynchronous (whether it is compiled or passed in _validate_ property); in this case it should return a promise that resolves with a value `true` or `false`. This option is ignored in case of "macro" and "inline" keywords. - _errors_: an optional boolean or string `"full"` indicating whether keyword returns errors. If this property is not set Ajv will determine if the errors were set in case of failed validation. _compile_, _macro_ and _inline_ are mutually exclusive, only one should be used at a time. _validate_ can be used separately or in addition to them to support $data reference. __Please note__: If the keyword is validating data type that is different from the type(s) in its definition, the validation function will not be called (and expanded macro will not be used), so there is no need to check for data type inside validation function or inside schema returned by macro function (unless you want to enforce a specific type and for some reason do not want to use a separate `type` keyword for that). In the same way as standard keywords work, if the keyword does not apply to the data type being validated, the validation of this keyword will succeed. See [Defining custom keywords](#defining-custom-keywords) for more details. ##### .getKeyword(String keyword) -&gt; Object|Boolean Returns custom keyword definition, `true` for pre-defined keywords and `false` if the keyword is unknown. ##### .removeKeyword(String keyword) -&gt; Ajv Removes custom or pre-defined keyword so you can redefine them. While this method can be used to extend pre-defined keywords, it can also be used to completely change their meaning - it may lead to unexpected results. __Please note__: schemas compiled before the keyword is removed will continue to work without changes. To recompile schemas use `removeSchema` method and compile them again. ##### .errorsText([Array&lt;Object&gt; errors [, Object options]]) -&gt; String Returns the text with all errors in a String. Options can have properties `separator` (string used to separate errors, ", " by default) and `dataVar` (the variable name that dataPaths are prefixed with, "data" by default). ## Options Defaults: ```javascript { // validation and reporting options: $data: false, allErrors: false, verbose: false, $comment: false, // NEW in Ajv version 6.0 jsonPointers: false, uniqueItems: true, unicode: true, nullable: false, format: 'fast', formats: {}, unknownFormats: true, schemas: {}, logger: undefined, // referenced schema options: schemaId: '$id', missingRefs: true, extendRefs: 'ignore', // recommended 'fail' loadSchema: undefined, // function(uri: string): Promise {} // options to modify validated data: removeAdditional: false, useDefaults: false, coerceTypes: false, // strict mode options strictDefaults: false, strictKeywords: false, strictNumbers: false, // asynchronous validation options: transpile: undefined, // requires ajv-async package // advanced options: meta: true, validateSchema: true, addUsedSchema: true, inlineRefs: true, passContext: false, loopRequired: Infinity, ownProperties: false, multipleOfPrecision: false, errorDataPath: 'object', // deprecated messages: true, sourceCode: false, processCode: undefined, // function (str: string, schema: object): string {} cache: new Cache, serialize: undefined } ``` ##### Validation and reporting options - _$data_: support [$data references](#data-reference). Draft 6 meta-schema that is added by default will be extended to allow them. If you want to use another meta-schema you need to use $dataMetaSchema method to add support for $data reference. See [API](#api). - _allErrors_: check all rules collecting all errors. Default is to return after the first error. - _verbose_: include the reference to the part of the schema (`schema` and `parentSchema`) and validated data in errors (false by default). - _$comment_ (NEW in Ajv version 6.0): log or pass the value of `$comment` keyword to a function. Option values: - `false` (default): ignore $comment keyword. - `true`: log the keyword value to console. - function: pass the keyword value, its schema path and root schema to the specified function - _jsonPointers_: set `dataPath` property of errors using [JSON Pointers](https://tools.ietf.org/html/rfc6901) instead of JavaScript property access notation. - _uniqueItems_: validate `uniqueItems` keyword (true by default). - _unicode_: calculate correct length of strings with unicode pairs (true by default). Pass `false` to use `.length` of strings that is faster, but gives "incorrect" lengths of strings with unicode pairs - each unicode pair is counted as two characters. - _nullable_: support keyword "nullable" from [Open API 3 specification](https://swagger.io/docs/specification/data-models/data-types/). - _format_: formats validation mode. Option values: - `"fast"` (default) - simplified and fast validation (see [Formats](#formats) for details of which formats are available and affected by this option). - `"full"` - more restrictive and slow validation. E.g., 25:00:00 and 2015/14/33 will be invalid time and date in 'full' mode but it will be valid in 'fast' mode. - `false` - ignore all format keywords. - _formats_: an object with custom formats. Keys and values will be passed to `addFormat` method. - _keywords_: an object with custom keywords. Keys and values will be passed to `addKeyword` method. - _unknownFormats_: handling of unknown formats. Option values: - `true` (default) - if an unknown format is encountered the exception is thrown during schema compilation. If `format` keyword value is [$data reference](#data-reference) and it is unknown the validation will fail. - `[String]` - an array of unknown format names that will be ignored. This option can be used to allow usage of third party schemas with format(s) for which you don't have definitions, but still fail if another unknown format is used. If `format` keyword value is [$data reference](#data-reference) and it is not in this array the validation will fail. - `"ignore"` - to log warning during schema compilation and always pass validation (the default behaviour in versions before 5.0.0). This option is not recommended, as it allows to mistype format name and it won't be validated without any error message. This behaviour is required by JSON Schema specification. - _schemas_: an array or object of schemas that will be added to the instance. In case you pass the array the schemas must have IDs in them. When the object is passed the method `addSchema(value, key)` will be called for each schema in this object. - _logger_: sets the logging method. Default is the global `console` object that should have methods `log`, `warn` and `error`. See [Error logging](#error-logging). Option values: - custom logger - it should have methods `log`, `warn` and `error`. If any of these methods is missing an exception will be thrown. - `false` - logging is disabled. ##### Referenced schema options - _schemaId_: this option defines which keywords are used as schema URI. Option value: - `"$id"` (default) - only use `$id` keyword as schema URI (as specified in JSON Schema draft-06/07), ignore `id` keyword (if it is present a warning will be logged). - `"id"` - only use `id` keyword as schema URI (as specified in JSON Schema draft-04), ignore `$id` keyword (if it is present a warning will be logged). - `"auto"` - use both `$id` and `id` keywords as schema URI. If both are present (in the same schema object) and different the exception will be thrown during schema compilation. - _missingRefs_: handling of missing referenced schemas. Option values: - `true` (default) - if the reference cannot be resolved during compilation the exception is thrown. The thrown error has properties `missingRef` (with hash fragment) and `missingSchema` (without it). Both properties are resolved relative to the current base id (usually schema id, unless it was substituted). - `"ignore"` - to log error during compilation and always pass validation. - `"fail"` - to log error and successfully compile schema but fail validation if this rule is checked. - _extendRefs_: validation of other keywords when `$ref` is present in the schema. Option values: - `"ignore"` (default) - when `$ref` is used other keywords are ignored (as per [JSON Reference](https://tools.ietf.org/html/draft-pbryan-zyp-json-ref-03#section-3) standard). A warning will be logged during the schema compilation. - `"fail"` (recommended) - if other validation keywords are used together with `$ref` the exception will be thrown when the schema is compiled. This option is recommended to make sure schema has no keywords that are ignored, which can be confusing. - `true` - validate all keywords in the schemas with `$ref` (the default behaviour in versions before 5.0.0). - _loadSchema_: asynchronous function that will be used to load remote schemas when `compileAsync` [method](#api-compileAsync) is used and some reference is missing (option `missingRefs` should NOT be 'fail' or 'ignore'). This function should accept remote schema uri as a parameter and return a Promise that resolves to a schema. See example in [Asynchronous compilation](#asynchronous-schema-compilation). ##### Options to modify validated data - _removeAdditional_: remove additional properties - see example in [Filtering data](#filtering-data). This option is not used if schema is added with `addMetaSchema` method. Option values: - `false` (default) - not to remove additional properties - `"all"` - all additional properties are removed, regardless of `additionalProperties` keyword in schema (and no validation is made for them). - `true` - only additional properties with `additionalProperties` keyword equal to `false` are removed. - `"failing"` - additional properties that fail schema validation will be removed (where `additionalProperties` keyword is `false` or schema). - _useDefaults_: replace missing or undefined properties and items with the values from corresponding `default` keywords. Default behaviour is to ignore `default` keywords. This option is not used if schema is added with `addMetaSchema` method. See examples in [Assigning defaults](#assigning-defaults). Option values: - `false` (default) - do not use defaults - `true` - insert defaults by value (object literal is used). - `"empty"` - in addition to missing or undefined, use defaults for properties and items that are equal to `null` or `""` (an empty string). - `"shared"` (deprecated) - insert defaults by reference. If the default is an object, it will be shared by all instances of validated data. If you modify the inserted default in the validated data, it will be modified in the schema as well. - _coerceTypes_: change data type of data to match `type` keyword. See the example in [Coercing data types](#coercing-data-types) and [coercion rules](https://github.com/ajv-validator/ajv/blob/master/COERCION.md). Option values: - `false` (default) - no type coercion. - `true` - coerce scalar data types. - `"array"` - in addition to coercions between scalar types, coerce scalar data to an array with one element and vice versa (as required by the schema). ##### Strict mode options - _strictDefaults_: report ignored `default` keywords in schemas. Option values: - `false` (default) - ignored defaults are not reported - `true` - if an ignored default is present, throw an error - `"log"` - if an ignored default is present, log warning - _strictKeywords_: report unknown keywords in schemas. Option values: - `false` (default) - unknown keywords are not reported - `true` - if an unknown keyword is present, throw an error - `"log"` - if an unknown keyword is present, log warning - _strictNumbers_: validate numbers strictly, failing validation for NaN and Infinity. Option values: - `false` (default) - NaN or Infinity will pass validation for numeric types - `true` - NaN or Infinity will not pass validation for numeric types ##### Asynchronous validation options - _transpile_: Requires [ajv-async](https://github.com/ajv-validator/ajv-async) package. It determines whether Ajv transpiles compiled asynchronous validation function. Option values: - `undefined` (default) - transpile with [nodent](https://github.com/MatAtBread/nodent) if async functions are not supported. - `true` - always transpile with nodent. - `false` - do not transpile; if async functions are not supported an exception will be thrown. ##### Advanced options - _meta_: add [meta-schema](http://json-schema.org/documentation.html) so it can be used by other schemas (true by default). If an object is passed, it will be used as the default meta-schema for schemas that have no `$schema` keyword. This default meta-schema MUST have `$schema` keyword. - _validateSchema_: validate added/compiled schemas against meta-schema (true by default). `$schema` property in the schema can be http://json-schema.org/draft-07/schema or absent (draft-07 meta-schema will be used) or can be a reference to the schema previously added with `addMetaSchema` method. Option values: - `true` (default) - if the validation fails, throw the exception. - `"log"` - if the validation fails, log error. - `false` - skip schema validation. - _addUsedSchema_: by default methods `compile` and `validate` add schemas to the instance if they have `$id` (or `id`) property that doesn't start with "#". If `$id` is present and it is not unique the exception will be thrown. Set this option to `false` to skip adding schemas to the instance and the `$id` uniqueness check when these methods are used. This option does not affect `addSchema` method. - _inlineRefs_: Affects compilation of referenced schemas. Option values: - `true` (default) - the referenced schemas that don't have refs in them are inlined, regardless of their size - that substantially improves performance at the cost of the bigger size of compiled schema functions. - `false` - to not inline referenced schemas (they will be compiled as separate functions). - integer number - to limit the maximum number of keywords of the schema that will be inlined. - _passContext_: pass validation context to custom keyword functions. If this option is `true` and you pass some context to the compiled validation function with `validate.call(context, data)`, the `context` will be available as `this` in your custom keywords. By default `this` is Ajv instance. - _loopRequired_: by default `required` keyword is compiled into a single expression (or a sequence of statements in `allErrors` mode). In case of a very large number of properties in this keyword it may result in a very big validation function. Pass integer to set the number of properties above which `required` keyword will be validated in a loop - smaller validation function size but also worse performance. - _ownProperties_: by default Ajv iterates over all enumerable object properties; when this option is `true` only own enumerable object properties (i.e. found directly on the object rather than on its prototype) are iterated. Contributed by @mbroadst. - _multipleOfPrecision_: by default `multipleOf` keyword is validated by comparing the result of division with parseInt() of that result. It works for dividers that are bigger than 1. For small dividers such as 0.01 the result of the division is usually not integer (even when it should be integer, see issue [#84](https://github.com/ajv-validator/ajv/issues/84)). If you need to use fractional dividers set this option to some positive integer N to have `multipleOf` validated using this formula: `Math.abs(Math.round(division) - division) < 1e-N` (it is slower but allows for float arithmetics deviations). - _errorDataPath_ (deprecated): set `dataPath` to point to 'object' (default) or to 'property' when validating keywords `required`, `additionalProperties` and `dependencies`. - _messages_: Include human-readable messages in errors. `true` by default. `false` can be passed when custom messages are used (e.g. with [ajv-i18n](https://github.com/ajv-validator/ajv-i18n)). - _sourceCode_: add `sourceCode` property to validating function (for debugging; this code can be different from the result of toString call). - _processCode_: an optional function to process generated code before it is passed to Function constructor. It can be used to either beautify (the validating function is generated without line-breaks) or to transpile code. Starting from version 5.0.0 this option replaced options: - `beautify` that formatted the generated function using [js-beautify](https://github.com/beautify-web/js-beautify). If you want to beautify the generated code pass a function calling `require('js-beautify').js_beautify` as `processCode: code => js_beautify(code)`. - `transpile` that transpiled asynchronous validation function. You can still use `transpile` option with [ajv-async](https://github.com/ajv-validator/ajv-async) package. See [Asynchronous validation](#asynchronous-validation) for more information. - _cache_: an optional instance of cache to store compiled schemas using stable-stringified schema as a key. For example, set-associative cache [sacjs](https://github.com/epoberezkin/sacjs) can be used. If not passed then a simple hash is used which is good enough for the common use case (a limited number of statically defined schemas). Cache should have methods `put(key, value)`, `get(key)`, `del(key)` and `clear()`. - _serialize_: an optional function to serialize schema to cache key. Pass `false` to use schema itself as a key (e.g., if WeakMap used as a cache). By default [fast-json-stable-stringify](https://github.com/epoberezkin/fast-json-stable-stringify) is used. ## Validation errors In case of validation failure, Ajv assigns the array of errors to `errors` property of validation function (or to `errors` property of Ajv instance when `validate` or `validateSchema` methods were called). In case of [asynchronous validation](#asynchronous-validation), the returned promise is rejected with exception `Ajv.ValidationError` that has `errors` property. ### Error objects Each error is an object with the following properties: - _keyword_: validation keyword. - _dataPath_: the path to the part of the data that was validated. By default `dataPath` uses JavaScript property access notation (e.g., `".prop[1].subProp"`). When the option `jsonPointers` is true (see [Options](#options)) `dataPath` will be set using JSON pointer standard (e.g., `"/prop/1/subProp"`). - _schemaPath_: the path (JSON-pointer as a URI fragment) to the schema of the keyword that failed validation. - _params_: the object with the additional information about error that can be used to create custom error messages (e.g., using [ajv-i18n](https://github.com/ajv-validator/ajv-i18n) package). See below for parameters set by all keywords. - _message_: the standard error message (can be excluded with option `messages` set to false). - _schema_: the schema of the keyword (added with `verbose` option). - _parentSchema_: the schema containing the keyword (added with `verbose` option) - _data_: the data validated by the keyword (added with `verbose` option). __Please note__: `propertyNames` keyword schema validation errors have an additional property `propertyName`, `dataPath` points to the object. After schema validation for each property name, if it is invalid an additional error is added with the property `keyword` equal to `"propertyNames"`. ### Error parameters Properties of `params` object in errors depend on the keyword that failed validation. - `maxItems`, `minItems`, `maxLength`, `minLength`, `maxProperties`, `minProperties` - property `limit` (number, the schema of the keyword). - `additionalItems` - property `limit` (the maximum number of allowed items in case when `items` keyword is an array of schemas and `additionalItems` is false). - `additionalProperties` - property `additionalProperty` (the property not used in `properties` and `patternProperties` keywords). - `dependencies` - properties: - `property` (dependent property), - `missingProperty` (required missing dependency - only the first one is reported currently) - `deps` (required dependencies, comma separated list as a string), - `depsCount` (the number of required dependencies). - `format` - property `format` (the schema of the keyword). - `maximum`, `minimum` - properties: - `limit` (number, the schema of the keyword), - `exclusive` (boolean, the schema of `exclusiveMaximum` or `exclusiveMinimum`), - `comparison` (string, comparison operation to compare the data to the limit, with the data on the left and the limit on the right; can be "<", "<=", ">", ">=") - `multipleOf` - property `multipleOf` (the schema of the keyword) - `pattern` - property `pattern` (the schema of the keyword) - `required` - property `missingProperty` (required property that is missing). - `propertyNames` - property `propertyName` (an invalid property name). - `patternRequired` (in ajv-keywords) - property `missingPattern` (required pattern that did not match any property). - `type` - property `type` (required type(s), a string, can be a comma-separated list) - `uniqueItems` - properties `i` and `j` (indices of duplicate items). - `const` - property `allowedValue` pointing to the value (the schema of the keyword). - `enum` - property `allowedValues` pointing to the array of values (the schema of the keyword). - `$ref` - property `ref` with the referenced schema URI. - `oneOf` - property `passingSchemas` (array of indices of passing schemas, null if no schema passes). - custom keywords (in case keyword definition doesn't create errors) - property `keyword` (the keyword name). ### Error logging Using the `logger` option when initiallizing Ajv will allow you to define custom logging. Here you can build upon the exisiting logging. The use of other logging packages is supported as long as the package or its associated wrapper exposes the required methods. If any of the required methods are missing an exception will be thrown. - **Required Methods**: `log`, `warn`, `error` ```javascript var otherLogger = new OtherLogger(); var ajv = new Ajv({ logger: { log: console.log.bind(console), warn: function warn() { otherLogger.logWarn.apply(otherLogger, arguments); }, error: function error() { otherLogger.logError.apply(otherLogger, arguments); console.error.apply(console, arguments); } } }); ``` ## Plugins Ajv can be extended with plugins that add custom keywords, formats or functions to process generated code. When such plugin is published as npm package it is recommended that it follows these conventions: - it exports a function - this function accepts ajv instance as the first parameter and returns the same instance to allow chaining - this function can accept an optional configuration as the second parameter If you have published a useful plugin please submit a PR to add it to the next section. ## Related packages - [ajv-async](https://github.com/ajv-validator/ajv-async) - plugin to configure async validation mode - [ajv-bsontype](https://github.com/BoLaMN/ajv-bsontype) - plugin to validate mongodb's bsonType formats - [ajv-cli](https://github.com/jessedc/ajv-cli) - command line interface - [ajv-errors](https://github.com/ajv-validator/ajv-errors) - plugin for custom error messages - [ajv-i18n](https://github.com/ajv-validator/ajv-i18n) - internationalised error messages - [ajv-istanbul](https://github.com/ajv-validator/ajv-istanbul) - plugin to instrument generated validation code to measure test coverage of your schemas - [ajv-keywords](https://github.com/ajv-validator/ajv-keywords) - plugin with custom validation keywords (select, typeof, etc.) - [ajv-merge-patch](https://github.com/ajv-validator/ajv-merge-patch) - plugin with keywords $merge and $patch - [ajv-pack](https://github.com/ajv-validator/ajv-pack) - produces a compact module exporting validation functions - [ajv-formats-draft2019](https://github.com/luzlab/ajv-formats-draft2019) - format validators for draft2019 that aren't already included in ajv (ie. `idn-hostname`, `idn-email`, `iri`, `iri-reference` and `duration`). ## Some packages using Ajv - [webpack](https://github.com/webpack/webpack) - a module bundler. Its main purpose is to bundle JavaScript files for usage in a browser - [jsonscript-js](https://github.com/JSONScript/jsonscript-js) - the interpreter for [JSONScript](http://www.jsonscript.org) - scripted processing of existing endpoints and services - [osprey-method-handler](https://github.com/mulesoft-labs/osprey-method-handler) - Express middleware for validating requests and responses based on a RAML method object, used in [osprey](https://github.com/mulesoft/osprey) - validating API proxy generated from a RAML definition - [har-validator](https://github.com/ahmadnassri/har-validator) - HTTP Archive (HAR) validator - [jsoneditor](https://github.com/josdejong/jsoneditor) - a web-based tool to view, edit, format, and validate JSON http://jsoneditoronline.org - [JSON Schema Lint](https://github.com/nickcmaynard/jsonschemalint) - a web tool to validate JSON/YAML document against a single JSON Schema http://jsonschemalint.com - [objection](https://github.com/vincit/objection.js) - SQL-friendly ORM for Node.js - [table](https://github.com/gajus/table) - formats data into a string table - [ripple-lib](https://github.com/ripple/ripple-lib) - a JavaScript API for interacting with [Ripple](https://ripple.com) in Node.js and the browser - [restbase](https://github.com/wikimedia/restbase) - distributed storage with REST API & dispatcher for backend services built to provide a low-latency & high-throughput API for Wikipedia / Wikimedia content - [hippie-swagger](https://github.com/CacheControl/hippie-swagger) - [Hippie](https://github.com/vesln/hippie) wrapper that provides end to end API testing with swagger validation - [react-form-controlled](https://github.com/seeden/react-form-controlled) - React controlled form components with validation - [rabbitmq-schema](https://github.com/tjmehta/rabbitmq-schema) - a schema definition module for RabbitMQ graphs and messages - [@query/schema](https://www.npmjs.com/package/@query/schema) - stream filtering with a URI-safe query syntax parsing to JSON Schema - [chai-ajv-json-schema](https://github.com/peon374/chai-ajv-json-schema) - chai plugin to us JSON Schema with expect in mocha tests - [grunt-jsonschema-ajv](https://github.com/SignpostMarv/grunt-jsonschema-ajv) - Grunt plugin for validating files against JSON Schema - [extract-text-webpack-plugin](https://github.com/webpack-contrib/extract-text-webpack-plugin) - extract text from bundle into a file - [electron-builder](https://github.com/electron-userland/electron-builder) - a solution to package and build a ready for distribution Electron app - [addons-linter](https://github.com/mozilla/addons-linter) - Mozilla Add-ons Linter - [gh-pages-generator](https://github.com/epoberezkin/gh-pages-generator) - multi-page site generator converting markdown files to GitHub pages - [ESLint](https://github.com/eslint/eslint) - the pluggable linting utility for JavaScript and JSX ## Tests ``` npm install git submodule update --init npm test ``` ## Contributing All validation functions are generated using doT templates in [dot](https://github.com/ajv-validator/ajv/tree/master/lib/dot) folder. Templates are precompiled so doT is not a run-time dependency. `npm run build` - compiles templates to [dotjs](https://github.com/ajv-validator/ajv/tree/master/lib/dotjs) folder. `npm run watch` - automatically compiles templates when files in dot folder change Please see [Contributing guidelines](https://github.com/ajv-validator/ajv/blob/master/CONTRIBUTING.md) ## Changes history See https://github.com/ajv-validator/ajv/releases __Please note__: [Changes in version 7.0.0-beta](https://github.com/ajv-validator/ajv/releases/tag/v7.0.0-beta.0) [Version 6.0.0](https://github.com/ajv-validator/ajv/releases/tag/v6.0.0). ## Code of conduct Please review and follow the [Code of conduct](https://github.com/ajv-validator/ajv/blob/master/CODE_OF_CONDUCT.md). Please report any unacceptable behaviour to ajv.validator@gmail.com - it will be reviewed by the project team. ## Open-source software support Ajv is a part of [Tidelift subscription](https://tidelift.com/subscription/pkg/npm-ajv?utm_source=npm-ajv&utm_medium=referral&utm_campaign=readme) - it provides a centralised support to open-source software users, in addition to the support provided by software maintainers. ## License [MIT](https://github.com/ajv-validator/ajv/blob/master/LICENSE) argparse ======== [](http://travis-ci.org/nodeca/argparse) [](https://www.npmjs.org/package/argparse) CLI arguments parser for node.js. Javascript port of python's [argparse](http://docs.python.org/dev/library/argparse.html) module (original version 3.2). That's a full port, except some very rare options, recorded in issue tracker. **NB. Difference with original.** - Method names changed to camelCase. See [generated docs](http://nodeca.github.com/argparse/). - Use `defaultValue` instead of `default`. - Use `argparse.Const.REMAINDER` instead of `argparse.REMAINDER`, and similarly for constant values `OPTIONAL`, `ZERO_OR_MORE`, and `ONE_OR_MORE` (aliases for `nargs` values `'?'`, `'*'`, `'+'`, respectively), and `SUPPRESS`. Example ======= test.js file: ```javascript #!/usr/bin/env node 'use strict'; var ArgumentParser = require('../lib/argparse').ArgumentParser; var parser = new ArgumentParser({ version: '0.0.1', addHelp:true, description: 'Argparse example' }); parser.addArgument( [ '-f', '--foo' ], { help: 'foo bar' } ); parser.addArgument( [ '-b', '--bar' ], { help: 'bar foo' } ); parser.addArgument( '--baz', { help: 'baz bar' } ); var args = parser.parseArgs(); console.dir(args); ``` Display help: ``` $ ./test.js -h usage: example.js [-h] [-v] [-f FOO] [-b BAR] [--baz BAZ] Argparse example Optional arguments: -h, --help Show this help message and exit. -v, --version Show program's version number and exit. -f FOO, --foo FOO foo bar -b BAR, --bar BAR bar foo --baz BAZ baz bar ``` Parse arguments: ``` $ ./test.js -f=3 --bar=4 --baz 5 { foo: '3', bar: '4', baz: '5' } ``` More [examples](https://github.com/nodeca/argparse/tree/master/examples). ArgumentParser objects ====================== ``` new ArgumentParser({parameters hash}); ``` Creates a new ArgumentParser object. **Supported params:** - ```description``` - Text to display before the argument help. - ```epilog``` - Text to display after the argument help. - ```addHelp``` - Add a -h/–help option to the parser. (default: true) - ```argumentDefault``` - Set the global default value for arguments. (default: null) - ```parents``` - A list of ArgumentParser objects whose arguments should also be included. - ```prefixChars``` - The set of characters that prefix optional arguments. (default: ‘-‘) - ```formatterClass``` - A class for customizing the help output. - ```prog``` - The name of the program (default: `path.basename(process.argv[1])`) - ```usage``` - The string describing the program usage (default: generated) - ```conflictHandler``` - Usually unnecessary, defines strategy for resolving conflicting optionals. **Not supported yet** - ```fromfilePrefixChars``` - The set of characters that prefix files from which additional arguments should be read. Details in [original ArgumentParser guide](http://docs.python.org/dev/library/argparse.html#argumentparser-objects) addArgument() method ==================== ``` ArgumentParser.addArgument(name or flag or [name] or [flags...], {options}) ``` Defines how a single command-line argument should be parsed. - ```name or flag or [name] or [flags...]``` - Either a positional name (e.g., `'foo'`), a single option (e.g., `'-f'` or `'--foo'`), an array of a single positional name (e.g., `['foo']`), or an array of options (e.g., `['-f', '--foo']`). Options: - ```action``` - The basic type of action to be taken when this argument is encountered at the command line. - ```nargs```- The number of command-line arguments that should be consumed. - ```constant``` - A constant value required by some action and nargs selections. - ```defaultValue``` - The value produced if the argument is absent from the command line. - ```type``` - The type to which the command-line argument should be converted. - ```choices``` - A container of the allowable values for the argument. - ```required``` - Whether or not the command-line option may be omitted (optionals only). - ```help``` - A brief description of what the argument does. - ```metavar``` - A name for the argument in usage messages. - ```dest``` - The name of the attribute to be added to the object returned by parseArgs(). Details in [original add_argument guide](http://docs.python.org/dev/library/argparse.html#the-add-argument-method) Action (some details) ================ ArgumentParser objects associate command-line arguments with actions. These actions can do just about anything with the command-line arguments associated with them, though most actions simply add an attribute to the object returned by parseArgs(). The action keyword argument specifies how the command-line arguments should be handled. The supported actions are: - ```store``` - Just stores the argument’s value. This is the default action. - ```storeConst``` - Stores value, specified by the const keyword argument. (Note that the const keyword argument defaults to the rather unhelpful None.) The 'storeConst' action is most commonly used with optional arguments, that specify some sort of flag. - ```storeTrue``` and ```storeFalse``` - Stores values True and False respectively. These are special cases of 'storeConst'. - ```append``` - Stores a list, and appends each argument value to the list. This is useful to allow an option to be specified multiple times. - ```appendConst``` - Stores a list, and appends value, specified by the const keyword argument to the list. (Note, that the const keyword argument defaults is None.) The 'appendConst' action is typically used when multiple arguments need to store constants to the same list. - ```count``` - Counts the number of times a keyword argument occurs. For example, used for increasing verbosity levels. - ```help``` - Prints a complete help message for all the options in the current parser and then exits. By default a help action is automatically added to the parser. See ArgumentParser for details of how the output is created. - ```version``` - Prints version information and exit. Expects a `version=` keyword argument in the addArgument() call. Details in [original action guide](http://docs.python.org/dev/library/argparse.html#action) Sub-commands ============ ArgumentParser.addSubparsers() Many programs split their functionality into a number of sub-commands, for example, the svn program can invoke sub-commands like `svn checkout`, `svn update`, and `svn commit`. Splitting up functionality this way can be a particularly good idea when a program performs several different functions which require different kinds of command-line arguments. `ArgumentParser` supports creation of such sub-commands with `addSubparsers()` method. The `addSubparsers()` method is normally called with no arguments and returns an special action object. This object has a single method `addParser()`, which takes a command name and any `ArgumentParser` constructor arguments, and returns an `ArgumentParser` object that can be modified as usual. Example: sub_commands.js ```javascript #!/usr/bin/env node 'use strict'; var ArgumentParser = require('../lib/argparse').ArgumentParser; var parser = new ArgumentParser({ version: '0.0.1', addHelp:true, description: 'Argparse examples: sub-commands', }); var subparsers = parser.addSubparsers({ title:'subcommands', dest:"subcommand_name" }); var bar = subparsers.addParser('c1', {addHelp:true}); bar.addArgument( [ '-f', '--foo' ], { action: 'store', help: 'foo3 bar3' } ); var bar = subparsers.addParser( 'c2', {aliases:['co'], addHelp:true} ); bar.addArgument( [ '-b', '--bar' ], { action: 'store', type: 'int', help: 'foo3 bar3' } ); var args = parser.parseArgs(); console.dir(args); ``` Details in [original sub-commands guide](http://docs.python.org/dev/library/argparse.html#sub-commands) Contributors ============ - [Eugene Shkuropat](https://github.com/shkuropat) - [Paul Jacobson](https://github.com/hpaulj) [others](https://github.com/nodeca/argparse/graphs/contributors) License ======= Copyright (c) 2012 [Vitaly Puzrin](https://github.com/puzrin). Released under the MIT license. See [LICENSE](https://github.com/nodeca/argparse/blob/master/LICENSE) for details. # minizlib A fast zlib stream built on [minipass](http://npm.im/minipass) and Node.js's zlib binding. This module was created to serve the needs of [node-tar](http://npm.im/tar) and [minipass-fetch](http://npm.im/minipass-fetch). Brotli is supported in versions of node with a Brotli binding. ## How does this differ from the streams in `require('zlib')`? First, there are no convenience methods to compress or decompress a buffer. If you want those, use the built-in `zlib` module. This is only streams. That being said, Minipass streams to make it fairly easy to use as one-liners: `new zlib.Deflate().end(data).read()` will return the deflate compressed result. This module compresses and decompresses the data as fast as you feed it in. It is synchronous, and runs on the main process thread. Zlib and Brotli operations can be high CPU, but they're very fast, and doing it this way means much less bookkeeping and artificial deferral. Node's built in zlib streams are built on top of `stream.Transform`. They do the maximally safe thing with respect to consistent asynchrony, buffering, and backpressure. See [Minipass](http://npm.im/minipass) for more on the differences between Node.js core streams and Minipass streams, and the convenience methods provided by that class. ## Classes - Deflate - Inflate - Gzip - Gunzip - DeflateRaw - InflateRaw - Unzip - BrotliCompress (Node v10 and higher) - BrotliDecompress (Node v10 and higher) ## USAGE ```js const zlib = require('minizlib') const input = sourceOfCompressedData() const decode = new zlib.BrotliDecompress() const output = whereToWriteTheDecodedData() input.pipe(decode).pipe(output) ``` ## REPRODUCIBLE BUILDS To create reproducible gzip compressed files across different operating systems, set `portable: true` in the options. This causes minizlib to set the `OS` indicator in byte 9 of the extended gzip header to `0xFF` for 'unknown'. <h1 align="center">Enquirer</h1> <p align="center"> <a href="https://npmjs.org/package/enquirer"> <img src="https://img.shields.io/npm/v/enquirer.svg" alt="version"> </a> <a href="https://travis-ci.org/enquirer/enquirer"> <img src="https://img.shields.io/travis/enquirer/enquirer.svg" alt="travis"> </a> <a href="https://npmjs.org/package/enquirer"> <img src="https://img.shields.io/npm/dm/enquirer.svg" alt="downloads"> </a> </p> <br> <br> <p align="center"> <b>Stylish CLI prompts that are user-friendly, intuitive and easy to create.</b><br> _{>_ Prompts should be more like conversations than inquisitions▌} </p> <br> <p align="center"> _{(Example shows Enquirer's <a href="#survey-prompt">Survey Prompt</a>)</a>} <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/survey-prompt.gif" alt="Enquirer Survey Prompt" width="750"><br> _{The terminal in all examples is <a href="https://hyper.is/">Hyper</a>, theme is <a href="https://github.com/jonschlinkert/hyper-monokai-extended">hyper-monokai-extended</a>.}<br><br> <a href="#built-in-prompts"><strong>See more prompt examples</strong></a> </p> <br> <br> Created by [jonschlinkert](https://github.com/jonschlinkert) and [doowb](https://github.com/doowb), Enquirer is fast, easy to use, and lightweight enough for small projects, while also being powerful and customizable enough for the most advanced use cases. * **Fast** - [Loads in ~4ms](#-performance) (that's about _3-4 times faster than a [single frame of a HD movie](http://www.endmemo.com/sconvert/framespersecondframespermillisecond.php) at 60fps_) * **Lightweight** - Only one dependency, the excellent [ansi-colors](https://github.com/doowb/ansi-colors) by [Brian Woodward](https://github.com/doowb). * **Easy to implement** - Uses promises and async/await and sensible defaults to make prompts easy to create and implement. * **Easy to use** - Thrill your users with a better experience! Navigating around input and choices is a breeze. You can even create [quizzes](examples/fun/countdown.js), or [record](examples/fun/record.js) and [playback](examples/fun/play.js) key bindings to aid with tutorials and videos. * **Intuitive** - Keypress combos are available to simplify usage. * **Flexible** - All prompts can be used standalone or chained together. * **Stylish** - Easily override semantic styles and symbols for any part of the prompt. * **Extensible** - Easily create and use custom prompts by extending Enquirer's built-in [prompts](#-prompts). * **Pluggable** - Add advanced features to Enquirer using plugins. * **Validation** - Optionally validate user input with any prompt. * **Well tested** - All prompts are well-tested, and tests are easy to create without having to use brittle, hacky solutions to spy on prompts or "inject" values. * **Examples** - There are numerous [examples](examples) available to help you get started. If you like Enquirer, please consider starring or tweeting about this project to show your support. Thanks! <br> <p align="center"> <b>>_ Ready to start making prompts your users will love? ▌</b><br> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/heartbeat.gif" alt="Enquirer Select Prompt with heartbeat example" width="750"> </p> <br> <br> ## ❯ Getting started Get started with Enquirer, the most powerful and easy-to-use Node.js library for creating interactive CLI prompts. * [Install](#-install) * [Usage](#-usage) * [Enquirer](#-enquirer) * [Prompts](#-prompts) - [Built-in Prompts](#-prompts) - [Custom Prompts](#-custom-prompts) * [Key Bindings](#-key-bindings) * [Options](#-options) * [Release History](#-release-history) * [Performance](#-performance) * [About](#-about) <br> ## ❯ Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install enquirer --save ``` Install with [yarn](https://yarnpkg.com/en/): ```sh $ yarn add enquirer ``` <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/npm-install.gif" alt="Install Enquirer with NPM" width="750"> </p> _(Requires Node.js 8.6 or higher. Please let us know if you need support for an earlier version by creating an [issue](../../issues/new).)_ <br> ## ❯ Usage ### Single prompt The easiest way to get started with enquirer is to pass a [question object](#prompt-options) to the `prompt` method. ```js const { prompt } = require('enquirer'); const response = await prompt({ type: 'input', name: 'username', message: 'What is your username?' }); console.log(response); // { username: 'jonschlinkert' } ``` _(Examples with `await` need to be run inside an `async` function)_ ### Multiple prompts Pass an array of ["question" objects](#prompt-options) to run a series of prompts. ```js const response = await prompt([ { type: 'input', name: 'name', message: 'What is your name?' }, { type: 'input', name: 'username', message: 'What is your username?' } ]); console.log(response); // { name: 'Edward Chan', username: 'edwardmchan' } ``` ### Different ways to run enquirer #### 1. By importing the specific `built-in prompt` ```js const { Confirm } = require('enquirer'); const prompt = new Confirm({ name: 'question', message: 'Did you like enquirer?' }); prompt.run() .then(answer => console.log('Answer:', answer)); ``` #### 2. By passing the options to `prompt` ```js const { prompt } = require('enquirer'); prompt({ type: 'confirm', name: 'question', message: 'Did you like enquirer?' }) .then(answer => console.log('Answer:', answer)); ``` **Jump to**: [Getting Started](#-getting-started) · [Prompts](#-prompts) · [Options](#-options) · [Key Bindings](#-key-bindings) <br> ## ❯ Enquirer **Enquirer is a prompt runner** Add Enquirer to your JavaScript project with following line of code. ```js const Enquirer = require('enquirer'); ``` The main export of this library is the `Enquirer` class, which has methods and features designed to simplify running prompts. ```js const { prompt } = require('enquirer'); const question = [ { type: 'input', name: 'username', message: 'What is your username?' }, { type: 'password', name: 'password', message: 'What is your password?' } ]; let answers = await prompt(question); console.log(answers); ``` **Prompts control how values are rendered and returned** Each individual prompt is a class with special features and functionality for rendering the types of values you want to show users in the terminal, and subsequently returning the types of values you need to use in your application. **How can I customize prompts?** Below in this guide you will find information about creating [custom prompts](#-custom-prompts). For now, we'll focus on how to customize an existing prompt. All of the individual [prompt classes](#built-in-prompts) in this library are exposed as static properties on Enquirer. This allows them to be used directly without using `enquirer.prompt()`. Use this approach if you need to modify a prompt instance, or listen for events on the prompt. **Example** ```js const { Input } = require('enquirer'); const prompt = new Input({ name: 'username', message: 'What is your username?' }); prompt.run() .then(answer => console.log('Username:', answer)) .catch(console.error); ``` ### [Enquirer](index.js#L20) Create an instance of `Enquirer`. **Params** * `options` **{Object}**: (optional) Options to use with all prompts. * `answers` **{Object}**: (optional) Answers object to initialize with. **Example** ```js const Enquirer = require('enquirer'); const enquirer = new Enquirer(); ``` ### [register()](index.js#L42) Register a custom prompt type. **Params** * `type` **{String}** * `fn` **{Function|Prompt}**: `Prompt` class, or a function that returns a `Prompt` class. * `returns` **{Object}**: Returns the Enquirer instance **Example** ```js const Enquirer = require('enquirer'); const enquirer = new Enquirer(); enquirer.register('customType', require('./custom-prompt')); ``` ### [prompt()](index.js#L78) Prompt function that takes a "question" object or array of question objects, and returns an object with responses from the user. **Params** * `questions` **{Array|Object}**: Options objects for one or more prompts to run. * `returns` **{Promise}**: Promise that returns an "answers" object with the user's responses. **Example** ```js const Enquirer = require('enquirer'); const enquirer = new Enquirer(); const response = await enquirer.prompt({ type: 'input', name: 'username', message: 'What is your username?' }); console.log(response); ``` ### [use()](index.js#L160) Use an enquirer plugin. **Params** * `plugin` **{Function}**: Plugin function that takes an instance of Enquirer. * `returns` **{Object}**: Returns the Enquirer instance. **Example** ```js const Enquirer = require('enquirer'); const enquirer = new Enquirer(); const plugin = enquirer => { // do stuff to enquire instance }; enquirer.use(plugin); ``` ### [Enquirer#prompt](index.js#L210) Prompt function that takes a "question" object or array of question objects, and returns an object with responses from the user. **Params** * `questions` **{Array|Object}**: Options objects for one or more prompts to run. * `returns` **{Promise}**: Promise that returns an "answers" object with the user's responses. **Example** ```js const { prompt } = require('enquirer'); const response = await prompt({ type: 'input', name: 'username', message: 'What is your username?' }); console.log(response); ``` <br> ## ❯ Prompts This section is about Enquirer's prompts: what they look like, how they work, how to run them, available options, and how to customize the prompts or create your own prompt concept. **Getting started with Enquirer's prompts** * [Prompt](#prompt) - The base `Prompt` class used by other prompts - [Prompt Options](#prompt-options) * [Built-in prompts](#built-in-prompts) * [Prompt Types](#prompt-types) - The base `Prompt` class used by other prompts * [Custom prompts](#%E2%9D%AF-custom-prompts) - Enquirer 2.0 introduced the concept of prompt "types", with the goal of making custom prompts easier than ever to create and use. ### Prompt The base `Prompt` class is used to create all other prompts. ```js const { Prompt } = require('enquirer'); class MyCustomPrompt extends Prompt {} ``` See the documentation for [creating custom prompts](#-custom-prompts) to learn more about how this works. #### Prompt Options Each prompt takes an options object (aka "question" object), that implements the following interface: ```js { // required type: string | function, name: string | function, message: string | function | async function, // optional skip: boolean | function | async function, initial: string | function | async function, format: function | async function, result: function | async function, validate: function | async function, } ``` Each property of the options object is described below: | **Property** | **Required?** | **Type** | **Description** | | ------------ | ------------- | ------------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `type` | yes | `string\|function` | Enquirer uses this value to determine the type of prompt to run, but it's optional when prompts are run directly. | | `name` | yes | `string\|function` | Used as the key for the answer on the returned values (answers) object. | | `message` | yes | `string\|function` | The message to display when the prompt is rendered in the terminal. | | `skip` | no | `boolean\|function` | If `true` it will not ask that prompt. | | `initial` | no | `string\|function` | The default value to return if the user does not supply a value. | | `format` | no | `function` | Function to format user input in the terminal. | | `result` | no | `function` | Function to format the final submitted value before it's returned. | | `validate` | no | `function` | Function to validate the submitted value before it's returned. This function may return a boolean or a string. If a string is returned it will be used as the validation error message. | **Example usage** ```js const { prompt } = require('enquirer'); const question = { type: 'input', name: 'username', message: 'What is your username?' }; prompt(question) .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` <br> ### Built-in prompts * [AutoComplete Prompt](#autocomplete-prompt) * [BasicAuth Prompt](#basicauth-prompt) * [Confirm Prompt](#confirm-prompt) * [Form Prompt](#form-prompt) * [Input Prompt](#input-prompt) * [Invisible Prompt](#invisible-prompt) * [List Prompt](#list-prompt) * [MultiSelect Prompt](#multiselect-prompt) * [Numeral Prompt](#numeral-prompt) * [Password Prompt](#password-prompt) * [Quiz Prompt](#quiz-prompt) * [Survey Prompt](#survey-prompt) * [Scale Prompt](#scale-prompt) * [Select Prompt](#select-prompt) * [Sort Prompt](#sort-prompt) * [Snippet Prompt](#snippet-prompt) * [Toggle Prompt](#toggle-prompt) ### AutoComplete Prompt Prompt that auto-completes as the user types, and returns the selected value as a string. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/autocomplete-prompt.gif" alt="Enquirer AutoComplete Prompt" width="750"> </p> **Example Usage** ```js const { AutoComplete } = require('enquirer'); const prompt = new AutoComplete({ name: 'flavor', message: 'Pick your favorite flavor', limit: 10, initial: 2, choices: [ 'Almond', 'Apple', 'Banana', 'Blackberry', 'Blueberry', 'Cherry', 'Chocolate', 'Cinnamon', 'Coconut', 'Cranberry', 'Grape', 'Nougat', 'Orange', 'Pear', 'Pineapple', 'Raspberry', 'Strawberry', 'Vanilla', 'Watermelon', 'Wintergreen' ] }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **AutoComplete Options** | Option | Type | Default | Description | | ----------- | ---------- | ------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------ | | `highlight` | `function` | `dim` version of primary style | The color to use when "highlighting" characters in the list that match user input. | | `multiple` | `boolean` | `false` | Allow multiple choices to be selected. | | `suggest` | `function` | Greedy match, returns true if choice message contains input string. | Function that filters choices. Takes user input and a choices array, and returns a list of matching choices. | | `initial` | `number` | 0 | Preselected item in the list of choices. | | `footer` | `function` | None | Function that displays [footer text](https://github.com/enquirer/enquirer/blob/6c2819518a1e2ed284242a99a685655fbaabfa28/examples/autocomplete/option-footer.js#L10) | **Related prompts** * [Select](#select-prompt) * [MultiSelect](#multiselect-prompt) * [Survey](#survey-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### BasicAuth Prompt Prompt that asks for username and password to authenticate the user. The default implementation of `authenticate` function in `BasicAuth` prompt is to compare the username and password with the values supplied while running the prompt. The implementer is expected to override the `authenticate` function with a custom logic such as making an API request to a server to authenticate the username and password entered and expect a token back. <p align="center"> <img src="https://user-images.githubusercontent.com/13731210/61570485-7ffd9c00-aaaa-11e9-857a-d47dc7008284.gif" alt="Enquirer BasicAuth Prompt" width="750"> </p> **Example Usage** ```js const { BasicAuth } = require('enquirer'); const prompt = new BasicAuth({ name: 'password', message: 'Please enter your password', username: 'rajat-sr', password: '123', showPassword: true }); prompt .run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Confirm Prompt Prompt that returns `true` or `false`. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/confirm-prompt.gif" alt="Enquirer Confirm Prompt" width="750"> </p> **Example Usage** ```js const { Confirm } = require('enquirer'); const prompt = new Confirm({ name: 'question', message: 'Want to answer?' }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **Related prompts** * [Input](#input-prompt) * [Numeral](#numeral-prompt) * [Password](#password-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Form Prompt Prompt that allows the user to enter and submit multiple values on a single terminal screen. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/form-prompt.gif" alt="Enquirer Form Prompt" width="750"> </p> **Example Usage** ```js const { Form } = require('enquirer'); const prompt = new Form({ name: 'user', message: 'Please provide the following information:', choices: [ { name: 'firstname', message: 'First Name', initial: 'Jon' }, { name: 'lastname', message: 'Last Name', initial: 'Schlinkert' }, { name: 'username', message: 'GitHub username', initial: 'jonschlinkert' } ] }); prompt.run() .then(value => console.log('Answer:', value)) .catch(console.error); ``` **Related prompts** * [Input](#input-prompt) * [Survey](#survey-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Input Prompt Prompt that takes user input and returns a string. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/input-prompt.gif" alt="Enquirer Input Prompt" width="750"> </p> **Example Usage** ```js const { Input } = require('enquirer'); const prompt = new Input({ message: 'What is your username?', initial: 'jonschlinkert' }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.log); ``` You can use [data-store](https://github.com/jonschlinkert/data-store) to store [input history](https://github.com/enquirer/enquirer/blob/master/examples/input/option-history.js) that the user can cycle through (see [source](https://github.com/enquirer/enquirer/blob/8407dc3579123df5e6e20215078e33bb605b0c37/lib/prompts/input.js)). **Related prompts** * [Confirm](#confirm-prompt) * [Numeral](#numeral-prompt) * [Password](#password-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Invisible Prompt Prompt that takes user input, hides it from the terminal, and returns a string. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/invisible-prompt.gif" alt="Enquirer Invisible Prompt" width="750"> </p> **Example Usage** ```js const { Invisible } = require('enquirer'); const prompt = new Invisible({ name: 'secret', message: 'What is your secret?' }); prompt.run() .then(answer => console.log('Answer:', { secret: answer })) .catch(console.error); ``` **Related prompts** * [Password](#password-prompt) * [Input](#input-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### List Prompt Prompt that returns a list of values, created by splitting the user input. The default split character is `,` with optional trailing whitespace. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/list-prompt.gif" alt="Enquirer List Prompt" width="750"> </p> **Example Usage** ```js const { List } = require('enquirer'); const prompt = new List({ name: 'keywords', message: 'Type comma-separated keywords' }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **Related prompts** * [Sort](#sort-prompt) * [Select](#select-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### MultiSelect Prompt Prompt that allows the user to select multiple items from a list of options. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/multiselect-prompt.gif" alt="Enquirer MultiSelect Prompt" width="750"> </p> **Example Usage** ```js const { MultiSelect } = require('enquirer'); const prompt = new MultiSelect({ name: 'value', message: 'Pick your favorite colors', limit: 7, choices: [ { name: 'aqua', value: '#00ffff' }, { name: 'black', value: '#000000' }, { name: 'blue', value: '#0000ff' }, { name: 'fuchsia', value: '#ff00ff' }, { name: 'gray', value: '#808080' }, { name: 'green', value: '#008000' }, { name: 'lime', value: '#00ff00' }, { name: 'maroon', value: '#800000' }, { name: 'navy', value: '#000080' }, { name: 'olive', value: '#808000' }, { name: 'purple', value: '#800080' }, { name: 'red', value: '#ff0000' }, { name: 'silver', value: '#c0c0c0' }, { name: 'teal', value: '#008080' }, { name: 'white', value: '#ffffff' }, { name: 'yellow', value: '#ffff00' } ] }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); // Answer: ['aqua', 'blue', 'fuchsia'] ``` **Example key-value pairs** Optionally, pass a `result` function and use the `.map` method to return an object of key-value pairs of the selected names and values: [example](./examples/multiselect/option-result.js) ```js const { MultiSelect } = require('enquirer'); const prompt = new MultiSelect({ name: 'value', message: 'Pick your favorite colors', limit: 7, choices: [ { name: 'aqua', value: '#00ffff' }, { name: 'black', value: '#000000' }, { name: 'blue', value: '#0000ff' }, { name: 'fuchsia', value: '#ff00ff' }, { name: 'gray', value: '#808080' }, { name: 'green', value: '#008000' }, { name: 'lime', value: '#00ff00' }, { name: 'maroon', value: '#800000' }, { name: 'navy', value: '#000080' }, { name: 'olive', value: '#808000' }, { name: 'purple', value: '#800080' }, { name: 'red', value: '#ff0000' }, { name: 'silver', value: '#c0c0c0' }, { name: 'teal', value: '#008080' }, { name: 'white', value: '#ffffff' }, { name: 'yellow', value: '#ffff00' } ], result(names) { return this.map(names); } }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); // Answer: { aqua: '#00ffff', blue: '#0000ff', fuchsia: '#ff00ff' } ``` **Related prompts** * [AutoComplete](#autocomplete-prompt) * [Select](#select-prompt) * [Survey](#survey-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Numeral Prompt Prompt that takes a number as input. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/numeral-prompt.gif" alt="Enquirer Numeral Prompt" width="750"> </p> **Example Usage** ```js const { NumberPrompt } = require('enquirer'); const prompt = new NumberPrompt({ name: 'number', message: 'Please enter a number' }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **Related prompts** * [Input](#input-prompt) * [Confirm](#confirm-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Password Prompt Prompt that takes user input and masks it in the terminal. Also see the [invisible prompt](#invisible-prompt) <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/password-prompt.gif" alt="Enquirer Password Prompt" width="750"> </p> **Example Usage** ```js const { Password } = require('enquirer'); const prompt = new Password({ name: 'password', message: 'What is your password?' }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **Related prompts** * [Input](#input-prompt) * [Invisible](#invisible-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Quiz Prompt Prompt that allows the user to play multiple-choice quiz questions. <p align="center"> <img src="https://user-images.githubusercontent.com/13731210/61567561-891d4780-aa6f-11e9-9b09-3d504abd24ed.gif" alt="Enquirer Quiz Prompt" width="750"> </p> **Example Usage** ```js const { Quiz } = require('enquirer'); const prompt = new Quiz({ name: 'countries', message: 'How many countries are there in the world?', choices: ['165', '175', '185', '195', '205'], correctChoice: 3 }); prompt .run() .then(answer => { if (answer.correct) { console.log('Correct!'); } else { console.log(`Wrong! Correct answer is ${answer.correctAnswer}`); } }) .catch(console.error); ``` **Quiz Options** | Option | Type | Required | Description | | ----------- | ---------- | ---------- | ------------------------------------------------------------------------------------------------------------ | | `choices` | `array` | Yes | The list of possible answers to the quiz question. | | `correctChoice`| `number` | Yes | Index of the correct choice from the `choices` array. | **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Survey Prompt Prompt that allows the user to provide feedback for a list of questions. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/survey-prompt.gif" alt="Enquirer Survey Prompt" width="750"> </p> **Example Usage** ```js const { Survey } = require('enquirer'); const prompt = new Survey({ name: 'experience', message: 'Please rate your experience', scale: [ { name: '1', message: 'Strongly Disagree' }, { name: '2', message: 'Disagree' }, { name: '3', message: 'Neutral' }, { name: '4', message: 'Agree' }, { name: '5', message: 'Strongly Agree' } ], margin: [0, 0, 2, 1], choices: [ { name: 'interface', message: 'The website has a friendly interface.' }, { name: 'navigation', message: 'The website is easy to navigate.' }, { name: 'images', message: 'The website usually has good images.' }, { name: 'upload', message: 'The website makes it easy to upload images.' }, { name: 'colors', message: 'The website has a pleasing color palette.' } ] }); prompt.run() .then(value => console.log('ANSWERS:', value)) .catch(console.error); ``` **Related prompts** * [Scale](#scale-prompt) * [Snippet](#snippet-prompt) * [Select](#select-prompt) *** ### Scale Prompt A more compact version of the [Survey prompt](#survey-prompt), the Scale prompt allows the user to quickly provide feedback using a [Likert Scale](https://en.wikipedia.org/wiki/Likert_scale). <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/scale-prompt.gif" alt="Enquirer Scale Prompt" width="750"> </p> **Example Usage** ```js const { Scale } = require('enquirer'); const prompt = new Scale({ name: 'experience', message: 'Please rate your experience', scale: [ { name: '1', message: 'Strongly Disagree' }, { name: '2', message: 'Disagree' }, { name: '3', message: 'Neutral' }, { name: '4', message: 'Agree' }, { name: '5', message: 'Strongly Agree' } ], margin: [0, 0, 2, 1], choices: [ { name: 'interface', message: 'The website has a friendly interface.', initial: 2 }, { name: 'navigation', message: 'The website is easy to navigate.', initial: 2 }, { name: 'images', message: 'The website usually has good images.', initial: 2 }, { name: 'upload', message: 'The website makes it easy to upload images.', initial: 2 }, { name: 'colors', message: 'The website has a pleasing color palette.', initial: 2 } ] }); prompt.run() .then(value => console.log('ANSWERS:', value)) .catch(console.error); ``` **Related prompts** * [AutoComplete](#autocomplete-prompt) * [Select](#select-prompt) * [Survey](#survey-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Select Prompt Prompt that allows the user to select from a list of options. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/select-prompt.gif" alt="Enquirer Select Prompt" width="750"> </p> **Example Usage** ```js const { Select } = require('enquirer'); const prompt = new Select({ name: 'color', message: 'Pick a flavor', choices: ['apple', 'grape', 'watermelon', 'cherry', 'orange'] }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **Related prompts** * [AutoComplete](#autocomplete-prompt) * [MultiSelect](#multiselect-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Sort Prompt Prompt that allows the user to sort items in a list. **Example** In this [example](https://github.com/enquirer/enquirer/raw/master/examples/sort/prompt.js), custom styling is applied to the returned values to make it easier to see what's happening. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/sort-prompt.gif" alt="Enquirer Sort Prompt" width="750"> </p> **Example Usage** ```js const colors = require('ansi-colors'); const { Sort } = require('enquirer'); const prompt = new Sort({ name: 'colors', message: 'Sort the colors in order of preference', hint: 'Top is best, bottom is worst', numbered: true, choices: ['red', 'white', 'green', 'cyan', 'yellow'].map(n => ({ name: n, message: colors[n](n) })) }); prompt.run() .then(function(answer = []) { console.log(answer); console.log('Your preferred order of colors is:'); console.log(answer.map(key => colors[key](key)).join('\n')); }) .catch(console.error); ``` **Related prompts** * [List](#list-prompt) * [Select](#select-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Snippet Prompt Prompt that allows the user to replace placeholders in a snippet of code or text. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/snippet-prompt.gif" alt="Prompts" width="750"> </p> **Example Usage** ```js const semver = require('semver'); const { Snippet } = require('enquirer'); const prompt = new Snippet({ name: 'username', message: 'Fill out the fields in package.json', required: true, fields: [ { name: 'author_name', message: 'Author Name' }, { name: 'version', validate(value, state, item, index) { if (item && item.name === 'version' && !semver.valid(value)) { return prompt.styles.danger('version should be a valid semver value'); } return true; } } ], template: `{ "name": "\${name}", "description": "\${description}", "version": "\${version}", "homepage": "https://github.com/\${username}/\${name}", "author": "\${author_name} (https://github.com/\${username})", "repository": "\${username}/\${name}", "license": "\${license:ISC}" } ` }); prompt.run() .then(answer => console.log('Answer:', answer.result)) .catch(console.error); ``` **Related prompts** * [Survey](#survey-prompt) * [AutoComplete](#autocomplete-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Toggle Prompt Prompt that allows the user to toggle between two values then returns `true` or `false`. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/toggle-prompt.gif" alt="Enquirer Toggle Prompt" width="750"> </p> **Example Usage** ```js const { Toggle } = require('enquirer'); const prompt = new Toggle({ message: 'Want to answer?', enabled: 'Yep', disabled: 'Nope' }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **Related prompts** * [Confirm](#confirm-prompt) * [Input](#input-prompt) * [Sort](#sort-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Prompt Types There are 5 (soon to be 6!) type classes: * [ArrayPrompt](#arrayprompt) - [Options](#options) - [Properties](#properties) - [Methods](#methods) - [Choices](#choices) - [Defining choices](#defining-choices) - [Choice properties](#choice-properties) - [Related prompts](#related-prompts) * [AuthPrompt](#authprompt) * [BooleanPrompt](#booleanprompt) * DatePrompt (Coming Soon!) * [NumberPrompt](#numberprompt) * [StringPrompt](#stringprompt) Each type is a low-level class that may be used as a starting point for creating higher level prompts. Continue reading to learn how. ### ArrayPrompt The `ArrayPrompt` class is used for creating prompts that display a list of choices in the terminal. For example, Enquirer uses this class as the basis for the [Select](#select) and [Survey](#survey) prompts. #### Options In addition to the [options](#options) available to all prompts, Array prompts also support the following options. | **Option** | **Required?** | **Type** | **Description** | | ----------- | ------------- | --------------- | ----------------------------------------------------------------------------------------------------------------------- | | `autofocus` | `no` | `string\|number` | The index or name of the choice that should have focus when the prompt loads. Only one choice may have focus at a time. | | | `stdin` | `no` | `stream` | The input stream to use for emitting keypress events. Defaults to `process.stdin`. | | `stdout` | `no` | `stream` | The output stream to use for writing the prompt to the terminal. Defaults to `process.stdout`. | | | #### Properties Array prompts have the following instance properties and getters. | **Property name** | **Type** | **Description** | | ----------------- | --------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `choices` | `array` | Array of choices that have been normalized from choices passed on the prompt options. | | `cursor` | `number` | Position of the cursor relative to the _user input (string)_. | | `enabled` | `array` | Returns an array of enabled choices. | | `focused` | `array` | Returns the currently selected choice in the visible list of choices. This is similar to the concept of focus in HTML and CSS. Focused choices are always visible (on-screen). When a list of choices is longer than the list of visible choices, and an off-screen choice is _focused_, the list will scroll to the focused choice and re-render. | | `focused` | Gets the currently selected choice. Equivalent to `prompt.choices[prompt.index]`. | | `index` | `number` | Position of the pointer in the _visible list (array) of choices_. | | `limit` | `number` | The number of choices to display on-screen. | | `selected` | `array` | Either a list of enabled choices (when `options.multiple` is true) or the currently focused choice. | | `visible` | `string` | | #### Methods | **Method** | **Description** | | ------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `pointer()` | Returns the visual symbol to use to identify the choice that currently has focus. The `❯` symbol is often used for this. The pointer is not always visible, as with the `autocomplete` prompt. | | `indicator()` | Returns the visual symbol that indicates whether or not a choice is checked/enabled. | | `focus()` | Sets focus on a choice, if it can be focused. | #### Choices Array prompts support the `choices` option, which is the array of choices users will be able to select from when rendered in the terminal. **Type**: `string|object` **Example** ```js const { prompt } = require('enquirer'); const questions = [{ type: 'select', name: 'color', message: 'Favorite color?', initial: 1, choices: [ { name: 'red', message: 'Red', value: '#ff0000' }, //<= choice object { name: 'green', message: 'Green', value: '#00ff00' }, //<= choice object { name: 'blue', message: 'Blue', value: '#0000ff' } //<= choice object ] }]; let answers = await prompt(questions); console.log('Answer:', answers.color); ``` #### Defining choices Whether defined as a string or object, choices are normalized to the following interface: ```js { name: string; message: string | undefined; value: string | undefined; hint: string | undefined; disabled: boolean | string | undefined; } ``` **Example** ```js const question = { name: 'fruit', message: 'Favorite fruit?', choices: ['Apple', 'Orange', 'Raspberry'] }; ``` Normalizes to the following when the prompt is run: ```js const question = { name: 'fruit', message: 'Favorite fruit?', choices: [ { name: 'Apple', message: 'Apple', value: 'Apple' }, { name: 'Orange', message: 'Orange', value: 'Orange' }, { name: 'Raspberry', message: 'Raspberry', value: 'Raspberry' } ] }; ``` #### Choice properties The following properties are supported on `choice` objects. | **Option** | **Type** | **Description** | | ----------- | ----------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `name` | `string` | The unique key to identify a choice | | `message` | `string` | The message to display in the terminal. `name` is used when this is undefined. | | `value` | `string` | Value to associate with the choice. Useful for creating key-value pairs from user choices. `name` is used when this is undefined. | | `choices` | `array` | Array of "child" choices. | | `hint` | `string` | Help message to display next to a choice. | | `role` | `string` | Determines how the choice will be displayed. Currently the only role supported is `separator`. Additional roles may be added in the future (like `heading`, etc). Please create a [feature request] | | `enabled` | `boolean` | Enabled a choice by default. This is only supported when `options.multiple` is true or on prompts that support multiple choices, like [MultiSelect](#-multiselect). | | `disabled` | `boolean\|string` | Disable a choice so that it cannot be selected. This value may either be `true`, `false`, or a message to display. | | `indicator` | `string\|function` | Custom indicator to render for a choice (like a check or radio button). | #### Related prompts * [AutoComplete](#autocomplete-prompt) * [Form](#form-prompt) * [MultiSelect](#multiselect-prompt) * [Select](#select-prompt) * [Survey](#survey-prompt) *** ### AuthPrompt The `AuthPrompt` is used to create prompts to log in user using any authentication method. For example, Enquirer uses this class as the basis for the [BasicAuth Prompt](#basicauth-prompt). You can also find prompt examples in `examples/auth/` folder that utilizes `AuthPrompt` to create OAuth based authentication prompt or a prompt that authenticates using time-based OTP, among others. `AuthPrompt` has a factory function that creates an instance of `AuthPrompt` class and it expects an `authenticate` function, as an argument, which overrides the `authenticate` function of the `AuthPrompt` class. #### Methods | **Method** | **Description** | | ------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `authenticate()` | Contain all the authentication logic. This function should be overridden to implement custom authentication logic. The default `authenticate` function throws an error if no other function is provided. | #### Choices Auth prompt supports the `choices` option, which is the similar to the choices used in [Form Prompt](#form-prompt). **Example** ```js const { AuthPrompt } = require('enquirer'); function authenticate(value, state) { if (value.username === this.options.username && value.password === this.options.password) { return true; } return false; } const CustomAuthPrompt = AuthPrompt.create(authenticate); const prompt = new CustomAuthPrompt({ name: 'password', message: 'Please enter your password', username: 'rajat-sr', password: '1234567', choices: [ { name: 'username', message: 'username' }, { name: 'password', message: 'password' } ] }); prompt .run() .then(answer => console.log('Authenticated?', answer)) .catch(console.error); ``` #### Related prompts * [BasicAuth Prompt](#basicauth-prompt) *** ### BooleanPrompt The `BooleanPrompt` class is used for creating prompts that display and return a boolean value. ```js const { BooleanPrompt } = require('enquirer'); const prompt = new BooleanPrompt({ header: '========================', message: 'Do you love enquirer?', footer: '========================', }); prompt.run() .then(answer => console.log('Selected:', answer)) .catch(console.error); ``` **Returns**: `boolean` *** ### NumberPrompt The `NumberPrompt` class is used for creating prompts that display and return a numerical value. ```js const { NumberPrompt } = require('enquirer'); const prompt = new NumberPrompt({ header: '************************', message: 'Input the Numbers:', footer: '************************', }); prompt.run() .then(answer => console.log('Numbers are:', answer)) .catch(console.error); ``` **Returns**: `string|number` (number, or number formatted as a string) *** ### StringPrompt The `StringPrompt` class is used for creating prompts that display and return a string value. ```js const { StringPrompt } = require('enquirer'); const prompt = new StringPrompt({ header: '************************', message: 'Input the String:', footer: '************************' }); prompt.run() .then(answer => console.log('String is:', answer)) .catch(console.error); ``` **Returns**: `string` <br> ## ❯ Custom prompts With Enquirer 2.0, custom prompts are easier than ever to create and use. **How do I create a custom prompt?** Custom prompts are created by extending either: * Enquirer's `Prompt` class * one of the built-in [prompts](#-prompts), or * low-level [types](#-types). <!-- Example: HaiKarate Custom Prompt --> ```js const { Prompt } = require('enquirer'); class HaiKarate extends Prompt { constructor(options = {}) { super(options); this.value = options.initial || 0; this.cursorHide(); } up() { this.value++; this.render(); } down() { this.value--; this.render(); } render() { this.clear(); // clear previously rendered prompt from the terminal this.write(`${this.state.message}: ${this.value}`); } } // Use the prompt by creating an instance of your custom prompt class. const prompt = new HaiKarate({ message: 'How many sprays do you want?', initial: 10 }); prompt.run() .then(answer => console.log('Sprays:', answer)) .catch(console.error); ``` If you want to be able to specify your prompt by `type` so that it may be used alongside other prompts, you will need to first create an instance of `Enquirer`. ```js const Enquirer = require('enquirer'); const enquirer = new Enquirer(); ``` Then use the `.register()` method to add your custom prompt. ```js enquirer.register('haikarate', HaiKarate); ``` Now you can do the following when defining "questions". ```js let spritzer = require('cologne-drone'); let answers = await enquirer.prompt([ { type: 'haikarate', name: 'cologne', message: 'How many sprays do you need?', initial: 10, async onSubmit(name, value) { await spritzer.activate(value); //<= activate drone return value; } } ]); ``` <br> ## ❯ Key Bindings ### All prompts These key combinations may be used with all prompts. | **command** | **description** | | -------------------------------- | -------------------------------------- | | <kbd>ctrl</kbd> + <kbd>c</kbd> | Cancel the prompt. | | <kbd>ctrl</kbd> + <kbd>g</kbd> | Reset the prompt to its initial state. | <br> ### Move cursor These combinations may be used on prompts that support user input (eg. [input prompt](#input-prompt), [password prompt](#password-prompt), and [invisible prompt](#invisible-prompt)). | **command** | **description** | | ------------------------------ | ---------------------------------------- | | <kbd>left</kbd> | Move the cursor back one character. | | <kbd>right</kbd> | Move the cursor forward one character. | | <kbd>ctrl</kbd> + <kbd>a</kbd> | Move cursor to the start of the line | | <kbd>ctrl</kbd> + <kbd>e</kbd> | Move cursor to the end of the line | | <kbd>ctrl</kbd> + <kbd>b</kbd> | Move cursor back one character | | <kbd>ctrl</kbd> + <kbd>f</kbd> | Move cursor forward one character | | <kbd>ctrl</kbd> + <kbd>x</kbd> | Toggle between first and cursor position | <br> ### Edit Input These key combinations may be used on prompts that support user input (eg. [input prompt](#input-prompt), [password prompt](#password-prompt), and [invisible prompt](#invisible-prompt)). | **command** | **description** | | ------------------------------ | ---------------------------------------- | | <kbd>ctrl</kbd> + <kbd>a</kbd> | Move cursor to the start of the line | | <kbd>ctrl</kbd> + <kbd>e</kbd> | Move cursor to the end of the line | | <kbd>ctrl</kbd> + <kbd>b</kbd> | Move cursor back one character | | <kbd>ctrl</kbd> + <kbd>f</kbd> | Move cursor forward one character | | <kbd>ctrl</kbd> + <kbd>x</kbd> | Toggle between first and cursor position | <br> | **command (Mac)** | **command (Windows)** | **description** | | ----------------------------------- | -------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------- | | <kbd>delete</kbd> | <kbd>backspace</kbd> | Delete one character to the left. | | <kbd>fn</kbd> + <kbd>delete</kbd> | <kbd>delete</kbd> | Delete one character to the right. | | <kbd>option</kbd> + <kbd>up</kbd> | <kbd>alt</kbd> + <kbd>up</kbd> | Scroll to the previous item in history ([Input prompt](#input-prompt) only, when [history is enabled](examples/input/option-history.js)). | | <kbd>option</kbd> + <kbd>down</kbd> | <kbd>alt</kbd> + <kbd>down</kbd> | Scroll to the next item in history ([Input prompt](#input-prompt) only, when [history is enabled](examples/input/option-history.js)). | ### Select choices These key combinations may be used on prompts that support _multiple_ choices, such as the [multiselect prompt](#multiselect-prompt), or the [select prompt](#select-prompt) when the `multiple` options is true. | **command** | **description** | | ----------------- | -------------------------------------------------------------------------------------------------------------------- | | <kbd>space</kbd> | Toggle the currently selected choice when `options.multiple` is true. | | <kbd>number</kbd> | Move the pointer to the choice at the given index. Also toggles the selected choice when `options.multiple` is true. | | <kbd>a</kbd> | Toggle all choices to be enabled or disabled. | | <kbd>i</kbd> | Invert the current selection of choices. | | <kbd>g</kbd> | Toggle the current choice group. | <br> ### Hide/show choices | **command** | **description** | | ------------------------------- | ---------------------------------------------- | | <kbd>fn</kbd> + <kbd>up</kbd> | Decrease the number of visible choices by one. | | <kbd>fn</kbd> + <kbd>down</kbd> | Increase the number of visible choices by one. | <br> ### Move/lock Pointer | **command** | **description** | | ---------------------------------- | -------------------------------------------------------------------------------------------------------------------- | | <kbd>number</kbd> | Move the pointer to the choice at the given index. Also toggles the selected choice when `options.multiple` is true. | | <kbd>up</kbd> | Move the pointer up. | | <kbd>down</kbd> | Move the pointer down. | | <kbd>ctrl</kbd> + <kbd>a</kbd> | Move the pointer to the first _visible_ choice. | | <kbd>ctrl</kbd> + <kbd>e</kbd> | Move the pointer to the last _visible_ choice. | | <kbd>shift</kbd> + <kbd>up</kbd> | Scroll up one choice without changing pointer position (locks the pointer while scrolling). | | <kbd>shift</kbd> + <kbd>down</kbd> | Scroll down one choice without changing pointer position (locks the pointer while scrolling). | <br> | **command (Mac)** | **command (Windows)** | **description** | | -------------------------------- | --------------------- | ---------------------------------------------------------- | | <kbd>fn</kbd> + <kbd>left</kbd> | <kbd>home</kbd> | Move the pointer to the first choice in the choices array. | | <kbd>fn</kbd> + <kbd>right</kbd> | <kbd>end</kbd> | Move the pointer to the last choice in the choices array. | <br> ## ❯ Release History Please see [CHANGELOG.md](CHANGELOG.md). ## ❯ Performance ### System specs MacBook Pro, Intel Core i7, 2.5 GHz, 16 GB. ### Load time Time it takes for the module to load the first time (average of 3 runs): ``` enquirer: 4.013ms inquirer: 286.717ms ``` <br> ## ❯ About <details> <summary><strong>Contributing</strong></summary> Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). ### Todo We're currently working on documentation for the following items. Please star and watch the repository for updates! * [ ] Customizing symbols * [ ] Customizing styles (palette) * [ ] Customizing rendered input * [ ] Customizing returned values * [ ] Customizing key bindings * [ ] Question validation * [ ] Choice validation * [ ] Skipping questions * [ ] Async choices * [ ] Async timers: loaders, spinners and other animations * [ ] Links to examples </details> <details> <summary><strong>Running Tests</strong></summary> Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` ```sh $ yarn && yarn test ``` </details> <details> <summary><strong>Building docs</strong></summary> _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` </details> #### Contributors | **Commits** | **Contributor** | | --- | --- | | 283 | [jonschlinkert](https://github.com/jonschlinkert) | | 82 | [doowb](https://github.com/doowb) | | 32 | [rajat-sr](https://github.com/rajat-sr) | | 20 | [318097](https://github.com/318097) | | 15 | [g-plane](https://github.com/g-plane) | | 12 | [pixelass](https://github.com/pixelass) | | 5 | [adityavyas611](https://github.com/adityavyas611) | | 5 | [satotake](https://github.com/satotake) | | 3 | [tunnckoCore](https://github.com/tunnckoCore) | | 3 | [Ovyerus](https://github.com/Ovyerus) | | 3 | [sw-yx](https://github.com/sw-yx) | | 2 | [DanielRuf](https://github.com/DanielRuf) | | 2 | [GabeL7r](https://github.com/GabeL7r) | | 1 | [AlCalzone](https://github.com/AlCalzone) | | 1 | [hipstersmoothie](https://github.com/hipstersmoothie) | | 1 | [danieldelcore](https://github.com/danieldelcore) | | 1 | [ImgBotApp](https://github.com/ImgBotApp) | | 1 | [jsonkao](https://github.com/jsonkao) | | 1 | [knpwrs](https://github.com/knpwrs) | | 1 | [yeskunall](https://github.com/yeskunall) | | 1 | [mischah](https://github.com/mischah) | | 1 | [renarsvilnis](https://github.com/renarsvilnis) | | 1 | [sbugert](https://github.com/sbugert) | | 1 | [stephencweiss](https://github.com/stephencweiss) | | 1 | [skellock](https://github.com/skellock) | | 1 | [whxaxes](https://github.com/whxaxes) | #### Author **Jon Schlinkert** * [GitHub Profile](https://github.com/jonschlinkert) * [Twitter Profile](https://twitter.com/jonschlinkert) * [LinkedIn Profile](https://linkedin.com/in/jonschlinkert) #### Credit Thanks to [derhuerst](https://github.com/derhuerst), creator of prompt libraries such as [prompt-skeleton](https://github.com/derhuerst/prompt-skeleton), which influenced some of the concepts we used in our prompts. #### License Copyright © 2018-present, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT License](LICENSE). Browser-friendly inheritance fully compatible with standard node.js [inherits](http://nodejs.org/api/util.html#util_util_inherits_constructor_superconstructor). This package exports standard `inherits` from node.js `util` module in node environment, but also provides alternative browser-friendly implementation through [browser field](https://gist.github.com/shtylman/4339901). Alternative implementation is a literal copy of standard one located in standalone module to avoid requiring of `util`. It also has a shim for old browsers with no `Object.create` support. While keeping you sure you are using standard `inherits` implementation in node.js environment, it allows bundlers such as [browserify](https://github.com/substack/node-browserify) to not include full `util` package to your client code if all you need is just `inherits` function. It worth, because browser shim for `util` package is large and `inherits` is often the single function you need from it. It's recommended to use this package instead of `require('util').inherits` for any code that has chances to be used not only in node.js but in browser too. ## usage ```js var inherits = require('inherits'); // then use exactly as the standard one ``` ## note on version ~1.0 Version ~1.0 had completely different motivation and is not compatible neither with 2.0 nor with standard node.js `inherits`. If you are using version ~1.0 and planning to switch to ~2.0, be careful: * new version uses `super_` instead of `super` for referencing superclass * new version overwrites current prototype while old one preserves any existing fields on it # word-wrap [](https://www.npmjs.com/package/word-wrap) [](https://npmjs.org/package/word-wrap) [](https://npmjs.org/package/word-wrap) [](https://travis-ci.org/jonschlinkert/word-wrap) > Wrap words to a specified length. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save word-wrap ``` ## Usage ```js var wrap = require('word-wrap'); wrap('Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.'); ``` Results in: ``` Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. ``` ## Options  ### options.width Type: `Number` Default: `50` The width of the text before wrapping to a new line. **Example:** ```js wrap(str, {width: 60}); ``` ### options.indent Type: `String` Default: `` (two spaces) The string to use at the beginning of each line. **Example:** ```js wrap(str, {indent: ' '}); ``` ### options.newline Type: `String` Default: `\n` The string to use at the end of each line. **Example:** ```js wrap(str, {newline: '\n\n'}); ``` ### options.escape Type: `function` Default: `function(str){return str;}` An escape function to run on each line after splitting them. **Example:** ```js var xmlescape = require('xml-escape'); wrap(str, { escape: function(string){ return xmlescape(string); } }); ``` ### options.trim Type: `Boolean` Default: `false` Trim trailing whitespace from the returned string. This option is included since `.trim()` would also strip the leading indentation from the first line. **Example:** ```js wrap(str, {trim: true}); ``` ### options.cut Type: `Boolean` Default: `false` Break a word between any two letters when the word is longer than the specified width. **Example:** ```js wrap(str, {cut: true}); ``` ## About ### Related projects * [common-words](https://www.npmjs.com/package/common-words): Updated list (JSON) of the 100 most common words in the English language. Useful for… [more](https://github.com/jonschlinkert/common-words) | [homepage](https://github.com/jonschlinkert/common-words "Updated list (JSON) of the 100 most common words in the English language. Useful for excluding these words from arrays.") * [shuffle-words](https://www.npmjs.com/package/shuffle-words): Shuffle the words in a string and optionally the letters in each word using the… [more](https://github.com/jonschlinkert/shuffle-words) | [homepage](https://github.com/jonschlinkert/shuffle-words "Shuffle the words in a string and optionally the letters in each word using the Fisher-Yates algorithm. Useful for creating test fixtures, benchmarking samples, etc.") * [unique-words](https://www.npmjs.com/package/unique-words): Return the unique words in a string or array. | [homepage](https://github.com/jonschlinkert/unique-words "Return the unique words in a string or array.") * [wordcount](https://www.npmjs.com/package/wordcount): Count the words in a string. Support for english, CJK and Cyrillic. | [homepage](https://github.com/jonschlinkert/wordcount "Count the words in a string. Support for english, CJK and Cyrillic.") ### Contributing Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). ### Contributors | **Commits** | **Contributor** | | --- | --- | | 43 | [jonschlinkert](https://github.com/jonschlinkert) | | 2 | [lordvlad](https://github.com/lordvlad) | | 2 | [hildjj](https://github.com/hildjj) | | 1 | [danilosampaio](https://github.com/danilosampaio) | | 1 | [2fd](https://github.com/2fd) | | 1 | [toddself](https://github.com/toddself) | | 1 | [wolfgang42](https://github.com/wolfgang42) | | 1 | [zachhale](https://github.com/zachhale) | ### Building docs _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` ### Running tests Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` ### Author **Jon Schlinkert** * [github/jonschlinkert](https://github.com/jonschlinkert) * [twitter/jonschlinkert](https://twitter.com/jonschlinkert) ### License Copyright © 2017, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT License](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.6.0, on June 02, 2017._ # Acorn-JSX [](https://travis-ci.org/acornjs/acorn-jsx) [](https://www.npmjs.org/package/acorn-jsx) This is plugin for [Acorn](http://marijnhaverbeke.nl/acorn/) - a tiny, fast JavaScript parser, written completely in JavaScript. It was created as an experimental alternative, faster [React.js JSX](http://facebook.github.io/react/docs/jsx-in-depth.html) parser. Later, it replaced the [official parser](https://github.com/facebookarchive/esprima) and these days is used by many prominent development tools. ## Transpiler Please note that this tool only parses source code to JSX AST, which is useful for various language tools and services. If you want to transpile your code to regular ES5-compliant JavaScript with source map, check out [Babel](https://babeljs.io/) and [Buble](https://buble.surge.sh/) transpilers which use `acorn-jsx` under the hood. ## Usage Requiring this module provides you with an Acorn plugin that you can use like this: ```javascript var acorn = require("acorn"); var jsx = require("acorn-jsx"); acorn.Parser.extend(jsx()).parse("my(<jsx/>, 'code');"); ``` Note that official spec doesn't support mix of XML namespaces and object-style access in tag names (#27) like in `<namespace:Object.Property />`, so it was deprecated in `acorn-jsx@3.0`. If you still want to opt-in to support of such constructions, you can pass the following option: ```javascript acorn.Parser.extend(jsx({ allowNamespacedObjects: true })) ``` Also, since most apps use pure React transformer, a new option was introduced that allows to prohibit namespaces completely: ```javascript acorn.Parser.extend(jsx({ allowNamespaces: false })) ``` Note that by default `allowNamespaces` is enabled for spec compliancy. ## License This plugin is issued under the [MIT license](./LICENSE).  Moo! ==== Moo is a highly-optimised tokenizer/lexer generator. Use it to tokenize your strings, before parsing 'em with a parser like [nearley](https://github.com/hardmath123/nearley) or whatever else you're into. * [Fast](#is-it-fast) * [Convenient](#usage) * uses [Regular Expressions](#on-regular-expressions) * tracks [Line Numbers](#line-numbers) * handles [Keywords](#keywords) * supports [States](#states) * custom [Errors](#errors) * is even [Iterable](#iteration) * has no dependencies * 4KB minified + gzipped * Moo! Is it fast? ----------- Yup! Flying-cows-and-singed-steak fast. Moo is the fastest JS tokenizer around. It's **~2–10x** faster than most other tokenizers; it's a **couple orders of magnitude** faster than some of the slower ones. Define your tokens **using regular expressions**. Moo will compile 'em down to a **single RegExp for performance**. It uses the new ES6 **sticky flag** where possible to make things faster; otherwise it falls back to an almost-as-efficient workaround. (For more than you ever wanted to know about this, read [adventures in the land of substrings and RegExps](http://mrale.ph/blog/2016/11/23/making-less-dart-faster.html).) You _might_ be able to go faster still by writing your lexer by hand rather than using RegExps, but that's icky. Oh, and it [avoids parsing RegExps by itself](https://hackernoon.com/the-madness-of-parsing-real-world-javascript-regexps-d9ee336df983#.2l8qu3l76). Because that would be horrible. Usage ----- First, you need to do the needful: `$ npm install moo`, or whatever will ship this code to your computer. Alternatively, grab the `moo.js` file by itself and slap it into your web page via a `<script>` tag; moo is completely standalone. Then you can start roasting your very own lexer/tokenizer: ```js const moo = require('moo') let lexer = moo.compile({ WS: /[ \t]+/, comment: /\/\/.*?$/, number: /0|[1-9][0-9]*/, string: /"(?:\\["\\]|[^\n"\\])*"/, lparen: '(', rparen: ')', keyword: ['while', 'if', 'else', 'moo', 'cows'], NL: { match: /\n/, lineBreaks: true }, }) ``` And now throw some text at it: ```js lexer.reset('while (10) cows\nmoo') lexer.next() // -> { type: 'keyword', value: 'while' } lexer.next() // -> { type: 'WS', value: ' ' } lexer.next() // -> { type: 'lparen', value: '(' } lexer.next() // -> { type: 'number', value: '10' } // ... ``` When you reach the end of Moo's internal buffer, next() will return `undefined`. You can always `reset()` it and feed it more data when that happens. On Regular Expressions ---------------------- RegExps are nifty for making tokenizers, but they can be a bit of a pain. Here are some things to be aware of: * You often want to use **non-greedy quantifiers**: e.g. `*?` instead of `*`. Otherwise your tokens will be longer than you expect: ```js let lexer = moo.compile({ string: /".*"/, // greedy quantifier * // ... }) lexer.reset('"foo" "bar"') lexer.next() // -> { type: 'string', value: 'foo" "bar' } ``` Better: ```js let lexer = moo.compile({ string: /".*?"/, // non-greedy quantifier *? // ... }) lexer.reset('"foo" "bar"') lexer.next() // -> { type: 'string', value: 'foo' } lexer.next() // -> { type: 'space', value: ' ' } lexer.next() // -> { type: 'string', value: 'bar' } ``` * The **order of your rules** matters. Earlier ones will take precedence. ```js moo.compile({ identifier: /[a-z0-9]+/, number: /[0-9]+/, }).reset('42').next() // -> { type: 'identifier', value: '42' } moo.compile({ number: /[0-9]+/, identifier: /[a-z0-9]+/, }).reset('42').next() // -> { type: 'number', value: '42' } ``` * Moo uses **multiline RegExps**. This has a few quirks: for example, the **dot `/./` doesn't include newlines**. Use `[^]` instead if you want to match newlines too. * Since an excluding character ranges like `/[^ ]/` (which matches anything but a space) _will_ include newlines, you have to be careful not to include them by accident! In particular, the whitespace metacharacter `\s` includes newlines. Line Numbers ------------ Moo tracks detailed information about the input for you. It will track line numbers, as long as you **apply the `lineBreaks: true` option to any rules which might contain newlines**. Moo will try to warn you if you forget to do this. Note that this is `false` by default, for performance reasons: counting the number of lines in a matched token has a small cost. For optimal performance, only match newlines inside a dedicated token: ```js newline: {match: '\n', lineBreaks: true}, ``` ### Token Info ### Token objects (returned from `next()`) have the following attributes: * **`type`**: the name of the group, as passed to compile. * **`text`**: the string that was matched. * **`value`**: the string that was matched, transformed by your `value` function (if any). * **`offset`**: the number of bytes from the start of the buffer where the match starts. * **`lineBreaks`**: the number of line breaks found in the match. (Always zero if this rule has `lineBreaks: false`.) * **`line`**: the line number of the beginning of the match, starting from 1. * **`col`**: the column where the match begins, starting from 1. ### Value vs. Text ### The `value` is the same as the `text`, unless you provide a [value transform](#transform). ```js const moo = require('moo') const lexer = moo.compile({ ws: /[ \t]+/, string: {match: /"(?:\\["\\]|[^\n"\\])*"/, value: s => s.slice(1, -1)}, }) lexer.reset('"test"') lexer.next() /* { value: 'test', text: '"test"', ... } */ ``` ### Reset ### Calling `reset()` on your lexer will empty its internal buffer, and set the line, column, and offset counts back to their initial value. If you don't want this, you can `save()` the state, and later pass it as the second argument to `reset()` to explicitly control the internal state of the lexer. ```js    lexer.reset('some line\n') let info = lexer.save() // -> { line: 10 } lexer.next() // -> { line: 10 } lexer.next() // -> { line: 11 } // ... lexer.reset('a different line\n', info) lexer.next() // -> { line: 10 } ``` Keywords -------- Moo makes it convenient to define literals. ```js moo.compile({ lparen: '(', rparen: ')', keyword: ['while', 'if', 'else', 'moo', 'cows'], }) ``` It'll automatically compile them into regular expressions, escaping them where necessary. **Keywords** should be written using the `keywords` transform. ```js moo.compile({ IDEN: {match: /[a-zA-Z]+/, type: moo.keywords({ KW: ['while', 'if', 'else', 'moo', 'cows'], })}, SPACE: {match: /\s+/, lineBreaks: true}, }) ``` ### Why? ### You need to do this to ensure the **longest match** principle applies, even in edge cases. Imagine trying to parse the input `className` with the following rules: ```js keyword: ['class'], identifier: /[a-zA-Z]+/, ``` You'll get _two_ tokens — `['class', 'Name']` -- which is _not_ what you want! If you swap the order of the rules, you'll fix this example; but now you'll lex `class` wrong (as an `identifier`). The keywords helper checks matches against the list of keywords; if any of them match, it uses the type `'keyword'` instead of `'identifier'` (for this example). ### Keyword Types ### Keywords can also have **individual types**. ```js let lexer = moo.compile({ name: {match: /[a-zA-Z]+/, type: moo.keywords({ 'kw-class': 'class', 'kw-def': 'def', 'kw-if': 'if', })}, // ... }) lexer.reset('def foo') lexer.next() // -> { type: 'kw-def', value: 'def' } lexer.next() // space lexer.next() // -> { type: 'name', value: 'foo' } ``` You can use [itt](https://github.com/nathan/itt)'s iterator adapters to make constructing keyword objects easier: ```js itt(['class', 'def', 'if']) .map(k => ['kw-' + k, k]) .toObject() ``` States ------ Moo allows you to define multiple lexer **states**. Each state defines its own separate set of token rules. Your lexer will start off in the first state given to `moo.states({})`. Rules can be annotated with `next`, `push`, and `pop`, to change the current state after that token is matched. A "stack" of past states is kept, which is used by `push` and `pop`. * **`next: 'bar'`** moves to the state named `bar`. (The stack is not changed.) * **`push: 'bar'`** moves to the state named `bar`, and pushes the old state onto the stack. * **`pop: 1`** removes one state from the top of the stack, and moves to that state. (Only `1` is supported.) Only rules from the current state can be matched. You need to copy your rule into all the states you want it to be matched in. For example, to tokenize JS-style string interpolation such as `a${{c: d}}e`, you might use: ```js let lexer = moo.states({ main: { strstart: {match: '`', push: 'lit'}, ident: /\w+/, lbrace: {match: '{', push: 'main'}, rbrace: {match: '}', pop: true}, colon: ':', space: {match: /\s+/, lineBreaks: true}, }, lit: { interp: {match: '${', push: 'main'}, escape: /\\./, strend: {match: '`', pop: true}, const: {match: /(?:[^$`]|\$(?!\{))+/, lineBreaks: true}, }, }) // <= `a${{c: d}}e` // => strstart const interp lbrace ident colon space ident rbrace rbrace const strend ``` The `rbrace` rule is annotated with `pop`, so it moves from the `main` state into either `lit` or `main`, depending on the stack. Errors ------ If none of your rules match, Moo will throw an Error; since it doesn't know what else to do. If you prefer, you can have moo return an error token instead of throwing an exception. The error token will contain the whole of the rest of the buffer. ```js moo.compile({ // ... myError: moo.error, }) moo.reset('invalid') moo.next() // -> { type: 'myError', value: 'invalid', text: 'invalid', offset: 0, lineBreaks: 0, line: 1, col: 1 } moo.next() // -> undefined ``` You can have a token type that both matches tokens _and_ contains error values. ```js moo.compile({ // ... myError: {match: /[\$?`]/, error: true}, }) ``` ### Formatting errors ### If you want to throw an error from your parser, you might find `formatError` helpful. Call it with the offending token: ```js throw new Error(lexer.formatError(token, "invalid syntax")) ``` It returns a string with a pretty error message. ``` Error: invalid syntax at line 2 col 15: totally valid `syntax` ^ ``` Iteration --------- Iterators: we got 'em. ```js for (let here of lexer) { // here = { type: 'number', value: '123', ... } } ``` Create an array of tokens. ```js let tokens = Array.from(lexer); ``` Use [itt](https://github.com/nathan/itt)'s iteration tools with Moo. ```js for (let [here, next] = itt(lexer).lookahead()) { // pass a number if you need more tokens // enjoy! } ``` Transform --------- Moo doesn't allow capturing groups, but you can supply a transform function, `value()`, which will be called on the value before storing it in the Token object. ```js moo.compile({ STRING: [ {match: /"""[^]*?"""/, lineBreaks: true, value: x => x.slice(3, -3)}, {match: /"(?:\\["\\rn]|[^"\\])*?"/, lineBreaks: true, value: x => x.slice(1, -1)}, {match: /'(?:\\['\\rn]|[^'\\])*?'/, lineBreaks: true, value: x => x.slice(1, -1)}, ], // ... }) ``` Contributing ------------ Do check the [FAQ](https://github.com/tjvr/moo/issues?q=label%3Aquestion). Before submitting an issue, [remember...](https://github.com/tjvr/moo/blob/master/.github/CONTRIBUTING.md) # json-schema-traverse Traverse JSON Schema passing each schema object to callback [](https://travis-ci.org/epoberezkin/json-schema-traverse) [](https://www.npmjs.com/package/json-schema-traverse) [](https://coveralls.io/github/epoberezkin/json-schema-traverse?branch=master) ## Install ``` npm install json-schema-traverse ``` ## Usage ```javascript const traverse = require('json-schema-traverse'); const schema = { properties: { foo: {type: 'string'}, bar: {type: 'integer'} } }; traverse(schema, {cb}); // cb is called 3 times with: // 1. root schema // 2. {type: 'string'} // 3. {type: 'integer'} // Or: traverse(schema, {cb: {pre, post}}); // pre is called 3 times with: // 1. root schema // 2. {type: 'string'} // 3. {type: 'integer'} // // post is called 3 times with: // 1. {type: 'string'} // 2. {type: 'integer'} // 3. root schema ``` Callback function `cb` is called for each schema object (not including draft-06 boolean schemas), including the root schema, in pre-order traversal. Schema references ($ref) are not resolved, they are passed as is. Alternatively, you can pass a `{pre, post}` object as `cb`, and then `pre` will be called before traversing child elements, and `post` will be called after all child elements have been traversed. Callback is passed these parameters: - _schema_: the current schema object - _JSON pointer_: from the root schema to the current schema object - _root schema_: the schema passed to `traverse` object - _parent JSON pointer_: from the root schema to the parent schema object (see below) - _parent keyword_: the keyword inside which this schema appears (e.g. `properties`, `anyOf`, etc.) - _parent schema_: not necessarily parent object/array; in the example above the parent schema for `{type: 'string'}` is the root schema - _index/property_: index or property name in the array/object containing multiple schemas; in the example above for `{type: 'string'}` the property name is `'foo'` ## Traverse objects in all unknown keywords ```javascript const traverse = require('json-schema-traverse'); const schema = { mySchema: { minimum: 1, maximum: 2 } }; traverse(schema, {allKeys: true, cb}); // cb is called 2 times with: // 1. root schema // 2. mySchema ``` Without option `allKeys: true` callback will be called only with root schema. ## License [MIT](https://github.com/epoberezkin/json-schema-traverse/blob/master/LICENSE) # cliui [](https://travis-ci.org/yargs/cliui) [](https://coveralls.io/r/yargs/cliui?branch=) [](https://www.npmjs.com/package/cliui) [](https://github.com/conventional-changelog/standard-version) easily create complex multi-column command-line-interfaces. ## Example ```js var ui = require('cliui')() ui.div('Usage: $0 [command] [options]') ui.div({ text: 'Options:', padding: [2, 0, 2, 0] }) ui.div( { text: "-f, --file", width: 20, padding: [0, 4, 0, 4] }, { text: "the file to load." + chalk.green("(if this description is long it wraps).") , width: 20 }, { text: chalk.red("[required]"), align: 'right' } ) console.log(ui.toString()) ``` <img width="500" src="screenshot.png"> ## Layout DSL cliui exposes a simple layout DSL: If you create a single `ui.div`, passing a string rather than an object: * `\n`: characters will be interpreted as new rows. * `\t`: characters will be interpreted as new columns. * `\s`: characters will be interpreted as padding. **as an example...** ```js var ui = require('./')({ width: 60 }) ui.div( 'Usage: node ./bin/foo.js\n' + ' <regex>\t provide a regex\n' + ' <glob>\t provide a glob\t [required]' ) console.log(ui.toString()) ``` **will output:** ```shell Usage: node ./bin/foo.js <regex> provide a regex <glob> provide a glob [required] ``` ## Methods ```js cliui = require('cliui') ``` ### cliui({width: integer}) Specify the maximum width of the UI being generated. If no width is provided, cliui will try to get the current window's width and use it, and if that doesn't work, width will be set to `80`. ### cliui({wrap: boolean}) Enable or disable the wrapping of text in a column. ### cliui.div(column, column, column) Create a row with any number of columns, a column can either be a string, or an object with the following options: * **text:** some text to place in the column. * **width:** the width of a column. * **align:** alignment, `right` or `center`. * **padding:** `[top, right, bottom, left]`. * **border:** should a border be placed around the div? ### cliui.span(column, column, column) Similar to `div`, except the next row will be appended without a new line being created. ### cliui.resetOutput() Resets the UI elements of the current cliui instance, maintaining the values set for `width` and `wrap`. # tr46.js > An implementation of the [Unicode TR46 specification](http://unicode.org/reports/tr46/). ## Installation [Node.js](http://nodejs.org) `>= 6` is required. To install, type this at the command line: ```shell npm install tr46 ``` ## API ### `toASCII(domainName[, options])` Converts a string of Unicode symbols to a case-folded Punycode string of ASCII symbols. Available options: * [`checkBidi`](#checkBidi) * [`checkHyphens`](#checkHyphens) * [`checkJoiners`](#checkJoiners) * [`processingOption`](#processingOption) * [`useSTD3ASCIIRules`](#useSTD3ASCIIRules) * [`verifyDNSLength`](#verifyDNSLength) ### `toUnicode(domainName[, options])` Converts a case-folded Punycode string of ASCII symbols to a string of Unicode symbols. Available options: * [`checkBidi`](#checkBidi) * [`checkHyphens`](#checkHyphens) * [`checkJoiners`](#checkJoiners) * [`useSTD3ASCIIRules`](#useSTD3ASCIIRules) ## Options ### `checkBidi` Type: `Boolean` Default value: `false` When set to `true`, any bi-directional text within the input will be checked for validation. ### `checkHyphens` Type: `Boolean` Default value: `false` When set to `true`, the positions of any hyphen characters within the input will be checked for validation. ### `checkJoiners` Type: `Boolean` Default value: `false` When set to `true`, any word joiner characters within the input will be checked for validation. ### `processingOption` Type: `String` Default value: `"nontransitional"` When set to `"transitional"`, symbols within the input will be validated according to the older IDNA2003 protocol. When set to `"nontransitional"`, the current IDNA2008 protocol will be used. ### `useSTD3ASCIIRules` Type: `Boolean` Default value: `false` When set to `true`, input will be validated according to [STD3 Rules](http://unicode.org/reports/tr46/#STD3_Rules). ### `verifyDNSLength` Type: `Boolean` Default value: `false` When set to `true`, the length of each DNS label within the input will be checked for validation. Shims used when bundling asc for browser usage. # type-check [](https://travis-ci.org/gkz/type-check) <a name="type-check" /> `type-check` is a library which allows you to check the types of JavaScript values at runtime with a Haskell like type syntax. It is great for checking external input, for testing, or even for adding a bit of safety to your internal code. It is a major component of [levn](https://github.com/gkz/levn). MIT license. Version 0.4.0. Check out the [demo](http://gkz.github.io/type-check/). For updates on `type-check`, [follow me on twitter](https://twitter.com/gkzahariev). npm install type-check ## Quick Examples ```js // Basic types: var typeCheck = require('type-check').typeCheck; typeCheck('Number', 1); // true typeCheck('Number', 'str'); // false typeCheck('Error', new Error); // true typeCheck('Undefined', undefined); // true // Comment typeCheck('count::Number', 1); // true // One type OR another type: typeCheck('Number | String', 2); // true typeCheck('Number | String', 'str'); // true // Wildcard, matches all types: typeCheck('*', 2) // true // Array, all elements of a single type: typeCheck('[Number]', [1, 2, 3]); // true typeCheck('[Number]', [1, 'str', 3]); // false // Tuples, or fixed length arrays with elements of different types: typeCheck('(String, Number)', ['str', 2]); // true typeCheck('(String, Number)', ['str']); // false typeCheck('(String, Number)', ['str', 2, 5]); // false // Object properties: typeCheck('{x: Number, y: Boolean}', {x: 2, y: false}); // true typeCheck('{x: Number, y: Boolean}', {x: 2}); // false typeCheck('{x: Number, y: Maybe Boolean}', {x: 2}); // true typeCheck('{x: Number, y: Boolean}', {x: 2, y: false, z: 3}); // false typeCheck('{x: Number, y: Boolean, ...}', {x: 2, y: false, z: 3}); // true // A particular type AND object properties: typeCheck('RegExp{source: String, ...}', /re/i); // true typeCheck('RegExp{source: String, ...}', {source: 're'}); // false // Custom types: var opt = {customTypes: {Even: { typeOf: 'Number', validate: function(x) { return x % 2 === 0; }}}}; typeCheck('Even', 2, opt); // true // Nested: var type = '{a: (String, [Number], {y: Array, ...}), b: Error{message: String, ...}}' typeCheck(type, {a: ['hi', [1, 2, 3], {y: [1, 'ms']}], b: new Error('oh no')}); // true ``` Check out the [type syntax format](#syntax) and [guide](#guide). ## Usage `require('type-check');` returns an object that exposes four properties. `VERSION` is the current version of the library as a string. `typeCheck`, `parseType`, and `parsedTypeCheck` are functions. ```js // typeCheck(type, input, options); typeCheck('Number', 2); // true // parseType(type); var parsedType = parseType('Number'); // object // parsedTypeCheck(parsedType, input, options); parsedTypeCheck(parsedType, 2); // true ``` ### typeCheck(type, input, options) `typeCheck` checks a JavaScript value `input` against `type` written in the [type format](#type-format) (and taking account the optional `options`) and returns whether the `input` matches the `type`. ##### arguments * type - `String` - the type written in the [type format](#type-format) which to check against * input - `*` - any JavaScript value, which is to be checked against the type * options - `Maybe Object` - an optional parameter specifying additional options, currently the only available option is specifying [custom types](#custom-types) ##### returns `Boolean` - whether the input matches the type ##### example ```js typeCheck('Number', 2); // true ``` ### parseType(type) `parseType` parses string `type` written in the [type format](#type-format) into an object representing the parsed type. ##### arguments * type - `String` - the type written in the [type format](#type-format) which to parse ##### returns `Object` - an object in the parsed type format representing the parsed type ##### example ```js parseType('Number'); // [{type: 'Number'}] ``` ### parsedTypeCheck(parsedType, input, options) `parsedTypeCheck` checks a JavaScript value `input` against parsed `type` in the parsed type format (and taking account the optional `options`) and returns whether the `input` matches the `type`. Use this in conjunction with `parseType` if you are going to use a type more than once. ##### arguments * type - `Object` - the type in the parsed type format which to check against * input - `*` - any JavaScript value, which is to be checked against the type * options - `Maybe Object` - an optional parameter specifying additional options, currently the only available option is specifying [custom types](#custom-types) ##### returns `Boolean` - whether the input matches the type ##### example ```js parsedTypeCheck([{type: 'Number'}], 2); // true var parsedType = parseType('String'); parsedTypeCheck(parsedType, 'str'); // true ``` <a name="type-format" /> ## Type Format ### Syntax White space is ignored. The root node is a __Types__. * __Identifier__ = `[\$\w]+` - a group of any lower or upper case letters, numbers, underscores, or dollar signs - eg. `String` * __Type__ = an `Identifier`, an `Identifier` followed by a `Structure`, just a `Structure`, or a wildcard `*` - eg. `String`, `Object{x: Number}`, `{x: Number}`, `Array{0: String, 1: Boolean, length: Number}`, `*` * __Types__ = optionally a comment (an `Identifier` followed by a `::`), optionally the identifier `Maybe`, one or more `Type`, separated by `|` - eg. `Number`, `String | Date`, `Maybe Number`, `Maybe Boolean | String` * __Structure__ = `Fields`, or a `Tuple`, or an `Array` - eg. `{x: Number}`, `(String, Number)`, `[Date]` * __Fields__ = a `{`, followed one or more `Field` separated by a comma `,` (trailing comma `,` is permitted), optionally an `...` (always preceded by a comma `,`), followed by a `}` - eg. `{x: Number, y: String}`, `{k: Function, ...}` * __Field__ = an `Identifier`, followed by a colon `:`, followed by `Types` - eg. `x: Date | String`, `y: Boolean` * __Tuple__ = a `(`, followed by one or more `Types` separated by a comma `,` (trailing comma `,` is permitted), followed by a `)` - eg `(Date)`, `(Number, Date)` * __Array__ = a `[` followed by exactly one `Types` followed by a `]` - eg. `[Boolean]`, `[Boolean | Null]` ### Guide `type-check` uses `Object.toString` to find out the basic type of a value. Specifically, ```js {}.toString.call(VALUE).slice(8, -1) {}.toString.call(true).slice(8, -1) // 'Boolean' ``` A basic type, eg. `Number`, uses this check. This is much more versatile than using `typeof` - for example, with `document`, `typeof` produces `'object'` which isn't that useful, and our technique produces `'HTMLDocument'`. You may check for multiple types by separating types with a `|`. The checker proceeds from left to right, and passes if the value is any of the types - eg. `String | Boolean` first checks if the value is a string, and then if it is a boolean. If it is none of those, then it returns false. Adding a `Maybe` in front of a list of multiple types is the same as also checking for `Null` and `Undefined` - eg. `Maybe String` is equivalent to `Undefined | Null | String`. You may add a comment to remind you of what the type is for by following an identifier with a `::` before a type (or multiple types). The comment is simply thrown out. The wildcard `*` matches all types. There are three types of structures for checking the contents of a value: 'fields', 'tuple', and 'array'. If used by itself, a 'fields' structure will pass with any type of object as long as it is an instance of `Object` and the properties pass - this allows for duck typing - eg. `{x: Boolean}`. To check if the properties pass, and the value is of a certain type, you can specify the type - eg. `Error{message: String}`. If you want to make a field optional, you can simply use `Maybe` - eg. `{x: Boolean, y: Maybe String}` will still pass if `y` is undefined (or null). If you don't care if the value has properties beyond what you have specified, you can use the 'etc' operator `...` - eg. `{x: Boolean, ...}` will match an object with an `x` property that is a boolean, and with zero or more other properties. For an array, you must specify one or more types (separated by `|`) - it will pass for something of any length as long as each element passes the types provided - eg. `[Number]`, `[Number | String]`. A tuple checks for a fixed number of elements, each of a potentially different type. Each element is separated by a comma - eg. `(String, Number)`. An array and tuple structure check that the value is of type `Array` by default, but if another type is specified, they will check for that instead - eg. `Int32Array[Number]`. You can use the wildcard `*` to search for any type at all. Check out the [type precedence](https://github.com/zaboco/type-precedence) library for type-check. ## Options Options is an object. It is an optional parameter to the `typeCheck` and `parsedTypeCheck` functions. The only current option is `customTypes`. <a name="custom-types" /> ### Custom Types __Example:__ ```js var options = { customTypes: { Even: { typeOf: 'Number', validate: function(x) { return x % 2 === 0; } } } }; typeCheck('Even', 2, options); // true typeCheck('Even', 3, options); // false ``` `customTypes` allows you to set up custom types for validation. The value of this is an object. The keys of the object are the types you will be matching. Each value of the object will be an object having a `typeOf` property - a string, and `validate` property - a function. The `typeOf` property is the type the value should be (optional - if not set only `validate` will be used), and `validate` is a function which should return true if the value is of that type. `validate` receives one parameter, which is the value that we are checking. ## Technical About `type-check` is written in [LiveScript](http://livescript.net/) - a language that compiles to JavaScript. It also uses the [prelude.ls](http://preludels.com/) library. <table><thead> <tr> <th>Linux</th> <th>OS X</th> <th>Windows</th> <th>Coverage</th> <th>Downloads</th> </tr> </thead><tbody><tr> <td colspan="2" align="center"> <a href="https://travis-ci.org/kaelzhang/node-ignore"> <img src="https://travis-ci.org/kaelzhang/node-ignore.svg?branch=master" alt="Build Status" /></a> </td> <td align="center"> <a href="https://ci.appveyor.com/project/kaelzhang/node-ignore"> <img src="https://ci.appveyor.com/api/projects/status/github/kaelzhang/node-ignore?branch=master&svg=true" alt="Windows Build Status" /></a> </td> <td align="center"> <a href="https://codecov.io/gh/kaelzhang/node-ignore"> <img src="https://codecov.io/gh/kaelzhang/node-ignore/branch/master/graph/badge.svg" alt="Coverage Status" /></a> </td> <td align="center"> <a href="https://www.npmjs.org/package/ignore"> <img src="http://img.shields.io/npm/dm/ignore.svg" alt="npm module downloads per month" /></a> </td> </tr></tbody></table> # ignore `ignore` is a manager, filter and parser which implemented in pure JavaScript according to the .gitignore [spec](http://git-scm.com/docs/gitignore). Pay attention that [`minimatch`](https://www.npmjs.org/package/minimatch) does not work in the gitignore way. To filter filenames according to .gitignore file, I recommend this module. ##### Tested on - Linux + Node: `0.8` - `7.x` - Windows + Node: `0.10` - `7.x`, node < `0.10` is not tested due to the lack of support of appveyor. Actually, `ignore` does not rely on any versions of node specially. Since `4.0.0`, ignore will no longer support `node < 6` by default, to use in node < 6, `require('ignore/legacy')`. For details, see [CHANGELOG](https://github.com/kaelzhang/node-ignore/blob/master/CHANGELOG.md). ## Table Of Main Contents - [Usage](#usage) - [`Pathname` Conventions](#pathname-conventions) - [Guide for 2.x -> 3.x](#upgrade-2x---3x) - [Guide for 3.x -> 4.x](#upgrade-3x---4x) - See Also: - [`glob-gitignore`](https://www.npmjs.com/package/glob-gitignore) matches files using patterns and filters them according to gitignore rules. ## Usage ```js import ignore from 'ignore' const ig = ignore().add(['.abc/*', '!.abc/d/']) ``` ### Filter the given paths ```js const paths = [ '.abc/a.js', // filtered out '.abc/d/e.js' // included ] ig.filter(paths) // ['.abc/d/e.js'] ig.ignores('.abc/a.js') // true ``` ### As the filter function ```js paths.filter(ig.createFilter()); // ['.abc/d/e.js'] ``` ### Win32 paths will be handled ```js ig.filter(['.abc\\a.js', '.abc\\d\\e.js']) // if the code above runs on windows, the result will be // ['.abc\\d\\e.js'] ``` ## Why another ignore? - `ignore` is a standalone module, and is much simpler so that it could easy work with other programs, unlike [isaacs](https://npmjs.org/~isaacs)'s [fstream-ignore](https://npmjs.org/package/fstream-ignore) which must work with the modules of the fstream family. - `ignore` only contains utility methods to filter paths according to the specified ignore rules, so - `ignore` never try to find out ignore rules by traversing directories or fetching from git configurations. - `ignore` don't cares about sub-modules of git projects. - Exactly according to [gitignore man page](http://git-scm.com/docs/gitignore), fixes some known matching issues of fstream-ignore, such as: - '`/*.js`' should only match '`a.js`', but not '`abc/a.js`'. - '`**/foo`' should match '`foo`' anywhere. - Prevent re-including a file if a parent directory of that file is excluded. - Handle trailing whitespaces: - `'a '`(one space) should not match `'a '`(two spaces). - `'a \ '` matches `'a '` - All test cases are verified with the result of `git check-ignore`. # Methods ## .add(pattern: string | Ignore): this ## .add(patterns: Array<string | Ignore>): this - **pattern** `String | Ignore` An ignore pattern string, or the `Ignore` instance - **patterns** `Array<String | Ignore>` Array of ignore patterns. Adds a rule or several rules to the current manager. Returns `this` Notice that a line starting with `'#'`(hash) is treated as a comment. Put a backslash (`'\'`) in front of the first hash for patterns that begin with a hash, if you want to ignore a file with a hash at the beginning of the filename. ```js ignore().add('#abc').ignores('#abc') // false ignore().add('\#abc').ignores('#abc') // true ``` `pattern` could either be a line of ignore pattern or a string of multiple ignore patterns, which means we could just `ignore().add()` the content of a ignore file: ```js ignore() .add(fs.readFileSync(filenameOfGitignore).toString()) .filter(filenames) ``` `pattern` could also be an `ignore` instance, so that we could easily inherit the rules of another `Ignore` instance. ## <strike>.addIgnoreFile(path)</strike> REMOVED in `3.x` for now. To upgrade `ignore@2.x` up to `3.x`, use ```js import fs from 'fs' if (fs.existsSync(filename)) { ignore().add(fs.readFileSync(filename).toString()) } ``` instead. ## .filter(paths: Array<Pathname>): Array<Pathname> ```ts type Pathname = string ``` Filters the given array of pathnames, and returns the filtered array. - **paths** `Array.<Pathname>` The array of `pathname`s to be filtered. ### `Pathname` Conventions: #### 1. `Pathname` should be a `path.relative()`d pathname `Pathname` should be a string that have been `path.join()`ed, or the return value of `path.relative()` to the current directory. ```js // WRONG ig.ignores('./abc') // WRONG, for it will never happen. // If the gitignore rule locates at the root directory, // `'/abc'` should be changed to `'abc'`. // ``` // path.relative('/', '/abc') -> 'abc' // ``` ig.ignores('/abc') // Right ig.ignores('abc') // Right ig.ignores(path.join('./abc')) // path.join('./abc') -> 'abc' ``` In other words, each `Pathname` here should be a relative path to the directory of the gitignore rules. Suppose the dir structure is: ``` /path/to/your/repo |-- a | |-- a.js | |-- .b | |-- .c |-- .DS_store ``` Then the `paths` might be like this: ```js [ 'a/a.js' '.b', '.c/.DS_store' ] ``` Usually, you could use [`glob`](http://npmjs.org/package/glob) with `option.mark = true` to fetch the structure of the current directory: ```js import glob from 'glob' glob('**', { // Adds a / character to directory matches. mark: true }, (err, files) => { if (err) { return console.error(err) } let filtered = ignore().add(patterns).filter(files) console.log(filtered) }) ``` #### 2. filenames and dirnames `node-ignore` does NO `fs.stat` during path matching, so for the example below: ```js ig.add('config/') // `ig` does NOT know if 'config' is a normal file, directory or something ig.ignores('config') // And it returns `false` ig.ignores('config/') // returns `true` ``` Specially for people who develop some library based on `node-ignore`, it is important to understand that. ## .ignores(pathname: Pathname): boolean > new in 3.2.0 Returns `Boolean` whether `pathname` should be ignored. ```js ig.ignores('.abc/a.js') // true ``` ## .createFilter() Creates a filter function which could filter an array of paths with `Array.prototype.filter`. Returns `function(path)` the filter function. ## `options.ignorecase` since 4.0.0 Similar as the `core.ignorecase` option of [git-config](https://git-scm.com/docs/git-config), `node-ignore` will be case insensitive if `options.ignorecase` is set to `true` (default value), otherwise case sensitive. ```js const ig = ignore({ ignorecase: false }) ig.add('*.png') ig.ignores('*.PNG') // false ``` **** # Upgrade Guide ## Upgrade 2.x -> 3.x - All `options` of 2.x are unnecessary and removed, so just remove them. - `ignore()` instance is no longer an [`EventEmitter`](nodejs.org/api/events.html), and all events are unnecessary and removed. - `.addIgnoreFile()` is removed, see the [.addIgnoreFile](#addignorefilepath) section for details. ## Upgrade 3.x -> 4.x Since `4.0.0`, `ignore` will no longer support node < 6, to use `ignore` in node < 6: ```js var ignore = require('ignore/legacy') ``` **** # Collaborators - [@whitecolor](https://github.com/whitecolor) *Alex* - [@SamyPesse](https://github.com/SamyPesse) *Samy Pessé* - [@azproduction](https://github.com/azproduction) *Mikhail Davydov* - [@TrySound](https://github.com/TrySound) *Bogdan Chadkin* - [@JanMattner](https://github.com/JanMattner) *Jan Mattner* - [@ntwb](https://github.com/ntwb) *Stephen Edgar* - [@kasperisager](https://github.com/kasperisager) *Kasper Isager* - [@sandersn](https://github.com/sandersn) *Nathan Shively-Sanders* ## Follow Redirects Drop-in replacement for Nodes `http` and `https` that automatically follows redirects. [](https://www.npmjs.com/package/follow-redirects) [](https://travis-ci.org/follow-redirects/follow-redirects) [](https://coveralls.io/r/follow-redirects/follow-redirects?branch=master) [](https://david-dm.org/follow-redirects/follow-redirects) [](https://www.npmjs.com/package/follow-redirects) `follow-redirects` provides [request](https://nodejs.org/api/http.html#http_http_request_options_callback) and [get](https://nodejs.org/api/http.html#http_http_get_options_callback) methods that behave identically to those found on the native [http](https://nodejs.org/api/http.html#http_http_request_options_callback) and [https](https://nodejs.org/api/https.html#https_https_request_options_callback) modules, with the exception that they will seamlessly follow redirects. ```javascript var http = require('follow-redirects').http; var https = require('follow-redirects').https; http.get('http://bit.ly/900913', function (response) { response.on('data', function (chunk) { console.log(chunk); }); }).on('error', function (err) { console.error(err); }); ``` You can inspect the final redirected URL through the `responseUrl` property on the `response`. If no redirection happened, `responseUrl` is the original request URL. ```javascript https.request({ host: 'bitly.com', path: '/UHfDGO', }, function (response) { console.log(response.responseUrl); // 'http://duckduckgo.com/robots.txt' }); ``` ## Options ### Global options Global options are set directly on the `follow-redirects` module: ```javascript var followRedirects = require('follow-redirects'); followRedirects.maxRedirects = 10; followRedirects.maxBodyLength = 20 * 1024 * 1024; // 20 MB ``` The following global options are supported: - `maxRedirects` (default: `21`) – sets the maximum number of allowed redirects; if exceeded, an error will be emitted. - `maxBodyLength` (default: 10MB) – sets the maximum size of the request body; if exceeded, an error will be emitted. ### Per-request options Per-request options are set by passing an `options` object: ```javascript var url = require('url'); var followRedirects = require('follow-redirects'); var options = url.parse('http://bit.ly/900913'); options.maxRedirects = 10; http.request(options); ``` In addition to the [standard HTTP](https://nodejs.org/api/http.html#http_http_request_options_callback) and [HTTPS options](https://nodejs.org/api/https.html#https_https_request_options_callback), the following per-request options are supported: - `followRedirects` (default: `true`) – whether redirects should be followed. - `maxRedirects` (default: `21`) – sets the maximum number of allowed redirects; if exceeded, an error will be emitted. - `maxBodyLength` (default: 10MB) – sets the maximum size of the request body; if exceeded, an error will be emitted. - `agents` (default: `undefined`) – sets the `agent` option per protocol, since HTTP and HTTPS use different agents. Example value: `{ http: new http.Agent(), https: new https.Agent() }` - `trackRedirects` (default: `false`) – whether to store the redirected response details into the `redirects` array on the response object. ### Advanced usage By default, `follow-redirects` will use the Node.js default implementations of [`http`](https://nodejs.org/api/http.html) and [`https`](https://nodejs.org/api/https.html). To enable features such as caching and/or intermediate request tracking, you might instead want to wrap `follow-redirects` around custom protocol implementations: ```javascript var followRedirects = require('follow-redirects').wrap({ http: require('your-custom-http'), https: require('your-custom-https'), }); ``` Such custom protocols only need an implementation of the `request` method. ## Browserify Usage Due to the way `XMLHttpRequest` works, the `browserify` versions of `http` and `https` already follow redirects. If you are *only* targeting the browser, then this library has little value for you. If you want to write cross platform code for node and the browser, `follow-redirects` provides a great solution for making the native node modules behave the same as they do in browserified builds in the browser. To avoid bundling unnecessary code you should tell browserify to swap out `follow-redirects` with the standard modules when bundling. To make this easier, you need to change how you require the modules: ```javascript var http = require('follow-redirects/http'); var https = require('follow-redirects/https'); ``` You can then replace `follow-redirects` in your browserify configuration like so: ```javascript "browser": { "follow-redirects/http" : "http", "follow-redirects/https" : "https" } ``` The `browserify-http` module has not kept pace with node development, and no long behaves identically to the native module when running in the browser. If you are experiencing problems, you may want to check out [browserify-http-2](https://www.npmjs.com/package/http-browserify-2). It is more actively maintained and attempts to address a few of the shortcomings of `browserify-http`. In that case, your browserify config should look something like this: ```javascript "browser": { "follow-redirects/http" : "browserify-http-2/http", "follow-redirects/https" : "browserify-http-2/https" } ``` ## Contributing Pull Requests are always welcome. Please [file an issue](https://github.com/follow-redirects/follow-redirects/issues) detailing your proposal before you invest your valuable time. Additional features and bug fixes should be accompanied by tests. You can run the test suite locally with a simple `npm test` command. ## Debug Logging `follow-redirects` uses the excellent [debug](https://www.npmjs.com/package/debug) for logging. To turn on logging set the environment variable `DEBUG=follow-redirects` for debug output from just this module. When running the test suite it is sometimes advantageous to set `DEBUG=*` to see output from the express server as well. ## Authors - Olivier Lalonde (olalonde@gmail.com) - James Talmage (james@talmage.io) - [Ruben Verborgh](https://ruben.verborgh.org/) ## License [https://github.com/follow-redirects/follow-redirects/blob/master/LICENSE](MIT License) # Optionator <a name="optionator" /> Optionator is a JavaScript/Node.js option parsing and help generation library used by [eslint](http://eslint.org), [Grasp](http://graspjs.com), [LiveScript](http://livescript.net), [esmangle](https://github.com/estools/esmangle), [escodegen](https://github.com/estools/escodegen), and [many more](https://www.npmjs.com/browse/depended/optionator). For an online demo, check out the [Grasp online demo](http://www.graspjs.com/#demo). [About](#about) &middot; [Usage](#usage) &middot; [Settings Format](#settings-format) &middot; [Argument Format](#argument-format) ## Why? The problem with other option parsers, such as `yargs` or `minimist`, is they just accept all input, valid or not. With Optionator, if you mistype an option, it will give you an error (with a suggestion for what you meant). If you give the wrong type of argument for an option, it will give you an error rather than supplying the wrong input to your application. $ cmd --halp Invalid option '--halp' - perhaps you meant '--help'? $ cmd --count str Invalid value for option 'count' - expected type Int, received value: str. Other helpful features include reformatting the help text based on the size of the console, so that it fits even if the console is narrow, and accepting not just an array (eg. process.argv), but a string or object as well, making things like testing much easier. ## About Optionator uses [type-check](https://github.com/gkz/type-check) and [levn](https://github.com/gkz/levn) behind the scenes to cast and verify input according the specified types. MIT license. Version 0.9.1 npm install optionator For updates on Optionator, [follow me on twitter](https://twitter.com/gkzahariev). Optionator is a Node.js module, but can be used in the browser as well if packed with webpack/browserify. ## Usage `require('optionator');` returns a function. It has one property, `VERSION`, the current version of the library as a string. This function is called with an object specifying your options and other information, see the [settings format section](#settings-format). This in turn returns an object with three properties, `parse`, `parseArgv`, `generateHelp`, and `generateHelpForOption`, which are all functions. ```js var optionator = require('optionator')({ prepend: 'Usage: cmd [options]', append: 'Version 1.0.0', options: [{ option: 'help', alias: 'h', type: 'Boolean', description: 'displays help' }, { option: 'count', alias: 'c', type: 'Int', description: 'number of things', example: 'cmd --count 2' }] }); var options = optionator.parseArgv(process.argv); if (options.help) { console.log(optionator.generateHelp()); } ... ``` ### parse(input, parseOptions) `parse` processes the `input` according to your settings, and returns an object with the results. ##### arguments * input - `[String] | Object | String` - the input you wish to parse * parseOptions - `{slice: Int}` - all options optional - `slice` specifies how much to slice away from the beginning if the input is an array or string - by default `0` for string, `2` for array (works with `process.argv`) ##### returns `Object` - the parsed options, each key is a camelCase version of the option name (specified in dash-case), and each value is the processed value for that option. Positional values are in an array under the `_` key. ##### example ```js parse(['node', 't.js', '--count', '2', 'positional']); // {count: 2, _: ['positional']} parse('--count 2 positional'); // {count: 2, _: ['positional']} parse({count: 2, _:['positional']}); // {count: 2, _: ['positional']} ``` ### parseArgv(input) `parseArgv` works exactly like `parse`, but only for array input and it slices off the first two elements. ##### arguments * input - `[String]` - the input you wish to parse ##### returns See "returns" section in "parse" ##### example ```js parseArgv(process.argv); ``` ### generateHelp(helpOptions) `generateHelp` produces help text based on your settings. ##### arguments * helpOptions - `{showHidden: Boolean, interpolate: Object}` - all options optional - `showHidden` specifies whether to show options with `hidden: true` specified, by default it is `false` - `interpolate` specify data to be interpolated in `prepend` and `append` text, `{{key}}` is the format - eg. `generateHelp({interpolate:{version: '0.4.2'}})`, will change this `append` text: `Version {{version}}` to `Version 0.4.2` ##### returns `String` - the generated help text ##### example ```js generateHelp(); /* "Usage: cmd [options] positional -h, --help displays help -c, --count Int number of things Version 1.0.0 "*/ ``` ### generateHelpForOption(optionName) `generateHelpForOption` produces expanded help text for the specified with `optionName` option. If an `example` was specified for the option, it will be displayed, and if a `longDescription` was specified, it will display that instead of the `description`. ##### arguments * optionName - `String` - the name of the option to display ##### returns `String` - the generated help text for the option ##### example ```js generateHelpForOption('count'); /* "-c, --count Int description: number of things example: cmd --count 2 "*/ ``` ## Settings Format When your `require('optionator')`, you get a function that takes in a settings object. This object has the type: { prepend: String, append: String, options: [{heading: String} | { option: String, alias: [String] | String, type: String, enum: [String], default: String, restPositional: Boolean, required: Boolean, overrideRequired: Boolean, dependsOn: [String] | String, concatRepeatedArrays: Boolean | (Boolean, Object), mergeRepeatedObjects: Boolean, description: String, longDescription: String, example: [String] | String }], helpStyle: { aliasSeparator: String, typeSeparator: String, descriptionSeparator: String, initialIndent: Int, secondaryIndent: Int, maxPadFactor: Number }, mutuallyExclusive: [[String | [String]]], concatRepeatedArrays: Boolean | (Boolean, Object), // deprecated, set in defaults object mergeRepeatedObjects: Boolean, // deprecated, set in defaults object positionalAnywhere: Boolean, typeAliases: Object, defaults: Object } All of the properties are optional (the `Maybe` has been excluded for brevities sake), except for having either `heading: String` or `option: String` in each object in the `options` array. ### Top Level Properties * `prepend` is an optional string to be placed before the options in the help text * `append` is an optional string to be placed after the options in the help text * `options` is a required array specifying your options and headings, the options and headings will be displayed in the order specified * `helpStyle` is an optional object which enables you to change the default appearance of some aspects of the help text * `mutuallyExclusive` is an optional array of arrays of either strings or arrays of strings. The top level array is a list of rules, each rule is a list of elements - each element can be either a string (the name of an option), or a list of strings (a group of option names) - there will be an error if more than one element is present * `concatRepeatedArrays` see description under the "Option Properties" heading - use at the top level is deprecated, if you want to set this for all options, use the `defaults` property * `mergeRepeatedObjects` see description under the "Option Properties" heading - use at the top level is deprecated, if you want to set this for all options, use the `defaults` property * `positionalAnywhere` is an optional boolean (defaults to `true`) - when `true` it allows positional arguments anywhere, when `false`, all arguments after the first positional one are taken to be positional as well, even if they look like a flag. For example, with `positionalAnywhere: false`, the arguments `--flag --boom 12 --crack` would have two positional arguments: `12` and `--crack` * `typeAliases` is an optional object, it allows you to set aliases for types, eg. `{Path: 'String'}` would allow you to use the type `Path` as an alias for the type `String` * `defaults` is an optional object following the option properties format, which specifies default values for all options. A default will be overridden if manually set. For example, you can do `default: { type: "String" }` to set the default type of all options to `String`, and then override that default in an individual option by setting the `type` property #### Heading Properties * `heading` a required string, the name of the heading #### Option Properties * `option` the required name of the option - use dash-case, without the leading dashes * `alias` is an optional string or array of strings which specify any aliases for the option * `type` is a required string in the [type check](https://github.com/gkz/type-check) [format](https://github.com/gkz/type-check#type-format), this will be used to cast the inputted value and validate it * `enum` is an optional array of strings, each string will be parsed by [levn](https://github.com/gkz/levn) - the argument value must be one of the resulting values - each potential value must validate against the specified `type` * `default` is a optional string, which will be parsed by [levn](https://github.com/gkz/levn) and used as the default value if none is set - the value must validate against the specified `type` * `restPositional` is an optional boolean - if set to `true`, everything after the option will be taken to be a positional argument, even if it looks like a named argument * `required` is an optional boolean - if set to `true`, the option parsing will fail if the option is not defined * `overrideRequired` is a optional boolean - if set to `true` and the option is used, and there is another option which is required but not set, it will override the need for the required option and there will be no error - this is useful if you have required options and want to use `--help` or `--version` flags * `concatRepeatedArrays` is an optional boolean or tuple with boolean and options object (defaults to `false`) - when set to `true` and an option contains an array value and is repeated, the subsequent values for the flag will be appended rather than overwriting the original value - eg. option `g` of type `[String]`: `-g a -g b -g c,d` will result in `['a','b','c','d']` You can supply an options object by giving the following value: `[true, options]`. The one currently supported option is `oneValuePerFlag`, this only allows one array value per flag. This is useful if your potential values contain a comma. * `mergeRepeatedObjects` is an optional boolean (defaults to `false`) - when set to `true` and an option contains an object value and is repeated, the subsequent values for the flag will be merged rather than overwriting the original value - eg. option `g` of type `Object`: `-g a:1 -g b:2 -g c:3,d:4` will result in `{a: 1, b: 2, c: 3, d: 4}` * `dependsOn` is an optional string or array of strings - if simply a string (the name of another option), it will make sure that that other option is set, if an array of strings, depending on whether `'and'` or `'or'` is first, it will either check whether all (`['and', 'option-a', 'option-b']`), or at least one (`['or', 'option-a', 'option-b']`) other options are set * `description` is an optional string, which will be displayed next to the option in the help text * `longDescription` is an optional string, it will be displayed instead of the `description` when `generateHelpForOption` is used * `example` is an optional string or array of strings with example(s) for the option - these will be displayed when `generateHelpForOption` is used #### Help Style Properties * `aliasSeparator` is an optional string, separates multiple names from each other - default: ' ,' * `typeSeparator` is an optional string, separates the type from the names - default: ' ' * `descriptionSeparator` is an optional string , separates the description from the padded name and type - default: ' ' * `initialIndent` is an optional int - the amount of indent for options - default: 2 * `secondaryIndent` is an optional int - the amount of indent if wrapped fully (in addition to the initial indent) - default: 4 * `maxPadFactor` is an optional number - affects the default level of padding for the names/type, it is multiplied by the average of the length of the names/type - default: 1.5 ## Argument Format At the highest level there are two types of arguments: named, and positional. Name arguments of any length are prefixed with `--` (eg. `--go`), and those of one character may be prefixed with either `--` or `-` (eg. `-g`). There are two types of named arguments: boolean flags (eg. `--problemo`, `-p`) which take no value and result in a `true` if they are present, the falsey `undefined` if they are not present, or `false` if present and explicitly prefixed with `no` (eg. `--no-problemo`). Named arguments with values (eg. `--tseries 800`, `-t 800`) are the other type. If the option has a type `Boolean` it will automatically be made into a boolean flag. Any other type results in a named argument that takes a value. For more information about how to properly set types to get the value you want, take a look at the [type check](https://github.com/gkz/type-check) and [levn](https://github.com/gkz/levn) pages. You can group single character arguments that use a single `-`, however all except the last must be boolean flags (which take no value). The last may be a boolean flag, or an argument which takes a value - eg. `-ba 2` is equivalent to `-b -a 2`. Positional arguments are all those values which do not fall under the above - they can be anywhere, not just at the end. For example, in `cmd -b one -a 2 two` where `b` is a boolean flag, and `a` has the type `Number`, there are two positional arguments, `one` and `two`. Everything after an `--` is positional, even if it looks like a named argument. You may optionally use `=` to separate option names from values, for example: `--count=2`. If you specify the option `NUM`, then any argument using a single `-` followed by a number will be valid and will set the value of `NUM`. Eg. `-2` will be parsed into `NUM: 2`. If duplicate named arguments are present, the last one will be taken. ## Technical About `optionator` is written in [LiveScript](http://livescript.net/) - a language that compiles to JavaScript. It uses [levn](https://github.com/gkz/levn) to cast arguments to their specified type, and uses [type-check](https://github.com/gkz/type-check) to validate values. It also uses the [prelude.ls](http://preludels.com/) library. [](https://app.travis-ci.com/github/dankogai/js-base64) # base64.js Yet another [Base64] transcoder. [Base64]: http://en.wikipedia.org/wiki/Base64 ## Install ```shell $ npm install --save js-base64 ``` ## Usage ### In Browser Locally… ```html <script src="base64.js"></script> ``` … or Directly from CDN. In which case you don't even need to install. ```html <script src="https://cdn.jsdelivr.net/npm/js-base64@3.7.2/base64.min.js"></script> ``` This good old way loads `Base64` in the global context (`window`). Though `Base64.noConflict()` is made available, you should consider using ES6 Module to avoid tainting `window`. ### As an ES6 Module locally… ```javascript import { Base64 } from 'js-base64'; ``` ```javascript // or if you prefer no Base64 namespace import { encode, decode } from 'js-base64'; ``` or even remotely. ```html <script type="module"> // note jsdelivr.net does not automatically minify .mjs import { Base64 } from 'https://cdn.jsdelivr.net/npm/js-base64@3.7.2/base64.mjs'; </script> ``` ```html <script type="module"> // or if you prefer no Base64 namespace import { encode, decode } from 'https://cdn.jsdelivr.net/npm/js-base64@3.7.2/base64.mjs'; </script> ``` ### node.js (commonjs) ```javascript const {Base64} = require('js-base64'); ``` Unlike the case above, the global context is no longer modified. You can also use [esm] to `import` instead of `require`. [esm]: https://github.com/standard-things/esm ```javascript require=require('esm')(module); import {Base64} from 'js-base64'; ``` ## SYNOPSIS ```javascript let latin = 'dankogai'; let utf8 = '小飼弾' let u8s = new Uint8Array([100,97,110,107,111,103,97,105]); Base64.encode(latin); // ZGFua29nYWk= Base64.encode(latin, true)); // ZGFua29nYWk skips padding Base64.encodeURI(latin)); // ZGFua29nYWk Base64.btoa(latin); // ZGFua29nYWk= Base64.btoa(utf8); // raises exception Base64.fromUint8Array(u8s); // ZGFua29nYWk= Base64.fromUint8Array(u8s, true); // ZGFua29nYW which is URI safe Base64.encode(utf8); // 5bCP6aO85by+ Base64.encode(utf8, true) // 5bCP6aO85by- Base64.encodeURI(utf8); // 5bCP6aO85by- ``` ```javascript Base64.decode( 'ZGFua29nYWk=');// dankogai Base64.decode( 'ZGFua29nYWk'); // dankogai Base64.atob( 'ZGFua29nYWk=');// dankogai Base64.atob( '5bCP6aO85by+');// '小飼弾' which is nonsense Base64.toUint8Array('ZGFua29nYWk=');// u8s above Base64.decode( '5bCP6aO85by+');// 小飼弾 // note .decodeURI() is unnecessary since it accepts both flavors Base64.decode( '5bCP6aO85by-');// 小飼弾 ``` ```javascript Base64.isValid(0); // false: 0 is not string Base64.isValid(''); // true: a valid Base64-encoded empty byte Base64.isValid('ZA=='); // true: a valid Base64-encoded 'd' Base64.isValid('Z A='); // true: whitespaces are okay Base64.isValid('ZA'); // true: padding ='s can be omitted Base64.isValid('++'); // true: can be non URL-safe Base64.isValid('--'); // true: or URL-safe Base64.isValid('+-'); // false: can't mix both ``` ### Built-in Extensions By default `Base64` leaves built-in prototypes untouched. But you can extend them as below. ```javascript // you have to explicitly extend String.prototype Base64.extendString(); // once extended, you can do the following 'dankogai'.toBase64(); // ZGFua29nYWk= '小飼弾'.toBase64(); // 5bCP6aO85by+ '小飼弾'.toBase64(true); // 5bCP6aO85by- '小飼弾'.toBase64URI(); // 5bCP6aO85by- ab alias of .toBase64(true) '小飼弾'.toBase64URL(); // 5bCP6aO85by- an alias of .toBase64URI() 'ZGFua29nYWk='.fromBase64(); // dankogai '5bCP6aO85by+'.fromBase64(); // 小飼弾 '5bCP6aO85by-'.fromBase64(); // 小飼弾 '5bCP6aO85by-'.toUint8Array();// u8s above ``` ```javascript // you have to explicitly extend Uint8Array.prototype Base64.extendUint8Array(); // once extended, you can do the following u8s.toBase64(); // 'ZGFua29nYWk=' u8s.toBase64URI(); // 'ZGFua29nYWk' u8s.toBase64URL(); // 'ZGFua29nYWk' an alias of .toBase64URI() ``` ```javascript // extend all at once Base64.extendBuiltins() ``` ## `.decode()` vs `.atob` (and `.encode()` vs `btoa()`) Suppose you have: ``` var pngBase64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII="; ``` Which is a Base64-encoded 1x1 transparent PNG, **DO NOT USE** `Base64.decode(pngBase64)`.  Use `Base64.atob(pngBase64)` instead.  `Base64.decode()` decodes to UTF-8 string while `Base64.atob()` decodes to bytes, which is compatible to browser built-in `atob()` (Which is absent in node.js).  The same rule applies to the opposite direction. Or even better, `Base64.toUint8Array(pngBase64)`. ### If you really, really need an ES5 version You can transpiles to an ES5 that runs on IEs before 11. Do the following in your shell. ```shell $ make base64.es5.js ``` ## Brief History * Since version 3.3 it is written in TypeScript. Now `base64.mjs` is compiled from `base64.ts` then `base64.js` is generated from `base64.mjs`. * Since version 3.7 `base64.js` is ES5-compatible again (hence IE11-compabile). * Since 3.0 `js-base64` switch to ES2015 module so it is no longer compatible with legacy browsers like IE (see above) # debug [](https://travis-ci.org/visionmedia/debug) [](https://coveralls.io/github/visionmedia/debug?branch=master) [](https://visionmedia-community-slackin.now.sh/) [](#backers) [](#sponsors) <img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png"> A tiny JavaScript debugging utility modelled after Node.js core's debugging technique. Works in Node.js and web browsers. ## Installation ```bash $ npm install debug ``` ## Usage `debug` exposes a function; simply pass this function the name of your module, and it will return a decorated version of `console.error` for you to pass debug statements to. This will allow you to toggle the debug output for different parts of your module as well as the module as a whole. Example [_app.js_](./examples/node/app.js): ```js var debug = require('debug')('http') , http = require('http') , name = 'My App'; // fake app debug('booting %o', name); http.createServer(function(req, res){ debug(req.method + ' ' + req.url); res.end('hello\n'); }).listen(3000, function(){ debug('listening'); }); // fake worker of some kind require('./worker'); ``` Example [_worker.js_](./examples/node/worker.js): ```js var a = require('debug')('worker:a') , b = require('debug')('worker:b'); function work() { a('doing lots of uninteresting work'); setTimeout(work, Math.random() * 1000); } work(); function workb() { b('doing some work'); setTimeout(workb, Math.random() * 2000); } workb(); ``` The `DEBUG` environment variable is then used to enable these based on space or comma-delimited names. Here are some examples: <img width="647" alt="screen shot 2017-08-08 at 12 53 04 pm" src="https://user-images.githubusercontent.com/71256/29091703-a6302cdc-7c38-11e7-8304-7c0b3bc600cd.png"> <img width="647" alt="screen shot 2017-08-08 at 12 53 38 pm" src="https://user-images.githubusercontent.com/71256/29091700-a62a6888-7c38-11e7-800b-db911291ca2b.png"> <img width="647" alt="screen shot 2017-08-08 at 12 53 25 pm" src="https://user-images.githubusercontent.com/71256/29091701-a62ea114-7c38-11e7-826a-2692bedca740.png"> #### Windows note On Windows the environment variable is set using the `set` command. ```cmd set DEBUG=*,-not_this ``` Note that PowerShell uses different syntax to set environment variables. ```cmd $env:DEBUG = "*,-not_this" ``` Then, run the program to be debugged as usual. ## Namespace Colors Every debug instance has a color generated for it based on its namespace name. This helps when visually parsing the debug output to identify which debug instance a debug line belongs to. #### Node.js In Node.js, colors are enabled when stderr is a TTY. You also _should_ install the [`supports-color`](https://npmjs.org/supports-color) module alongside debug, otherwise debug will only use a small handful of basic colors. <img width="521" src="https://user-images.githubusercontent.com/71256/29092181-47f6a9e6-7c3a-11e7-9a14-1928d8a711cd.png"> #### Web Browser Colors are also enabled on "Web Inspectors" that understand the `%c` formatting option. These are WebKit web inspectors, Firefox ([since version 31](https://hacks.mozilla.org/2014/05/editable-box-model-multiple-selection-sublime-text-keys-much-more-firefox-developer-tools-episode-31/)) and the Firebug plugin for Firefox (any version). <img width="524" src="https://user-images.githubusercontent.com/71256/29092033-b65f9f2e-7c39-11e7-8e32-f6f0d8e865c1.png"> ## Millisecond diff When actively developing an application it can be useful to see when the time spent between one `debug()` call and the next. Suppose for example you invoke `debug()` before requesting a resource, and after as well, the "+NNNms" will show you how much time was spent between calls. <img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png"> When stdout is not a TTY, `Date#toISOString()` is used, making it more useful for logging the debug information as shown below: <img width="647" src="https://user-images.githubusercontent.com/71256/29091956-6bd78372-7c39-11e7-8c55-c948396d6edd.png"> ## Conventions If you're using this in one or more of your libraries, you _should_ use the name of your library so that developers may toggle debugging as desired without guessing names. If you have more than one debuggers you _should_ prefix them with your library name and use ":" to separate features. For example "bodyParser" from Connect would then be "connect:bodyParser". If you append a "*" to the end of your name, it will always be enabled regardless of the setting of the DEBUG environment variable. You can then use it for normal output as well as debug output. ## Wildcards The `*` character may be used as a wildcard. Suppose for example your library has debuggers named "connect:bodyParser", "connect:compress", "connect:session", instead of listing all three with `DEBUG=connect:bodyParser,connect:compress,connect:session`, you may simply do `DEBUG=connect:*`, or to run everything using this module simply use `DEBUG=*`. You can also exclude specific debuggers by prefixing them with a "-" character. For example, `DEBUG=*,-connect:*` would include all debuggers except those starting with "connect:". ## Environment Variables When running through Node.js, you can set a few environment variables that will change the behavior of the debug logging: | Name | Purpose | |-----------|-------------------------------------------------| | `DEBUG` | Enables/disables specific debugging namespaces. | | `DEBUG_HIDE_DATE` | Hide date from debug output (non-TTY). | | `DEBUG_COLORS`| Whether or not to use colors in the debug output. | | `DEBUG_DEPTH` | Object inspection depth. | | `DEBUG_SHOW_HIDDEN` | Shows hidden properties on inspected objects. | __Note:__ The environment variables beginning with `DEBUG_` end up being converted into an Options object that gets used with `%o`/`%O` formatters. See the Node.js documentation for [`util.inspect()`](https://nodejs.org/api/util.html#util_util_inspect_object_options) for the complete list. ## Formatters Debug uses [printf-style](https://wikipedia.org/wiki/Printf_format_string) formatting. Below are the officially supported formatters: | Formatter | Representation | |-----------|----------------| | `%O` | Pretty-print an Object on multiple lines. | | `%o` | Pretty-print an Object all on a single line. | | `%s` | String. | | `%d` | Number (both integer and float). | | `%j` | JSON. Replaced with the string '[Circular]' if the argument contains circular references. | | `%%` | Single percent sign ('%'). This does not consume an argument. | ### Custom formatters You can add custom formatters by extending the `debug.formatters` object. For example, if you wanted to add support for rendering a Buffer as hex with `%h`, you could do something like: ```js const createDebug = require('debug') createDebug.formatters.h = (v) => { return v.toString('hex') } // …elsewhere const debug = createDebug('foo') debug('this is hex: %h', new Buffer('hello world')) // foo this is hex: 68656c6c6f20776f726c6421 +0ms ``` ## Browser Support You can build a browser-ready script using [browserify](https://github.com/substack/node-browserify), or just use the [browserify-as-a-service](https://wzrd.in/) [build](https://wzrd.in/standalone/debug@latest), if you don't want to build it yourself. Debug's enable state is currently persisted by `localStorage`. Consider the situation shown below where you have `worker:a` and `worker:b`, and wish to debug both. You can enable this using `localStorage.debug`: ```js localStorage.debug = 'worker:*' ``` And then refresh the page. ```js a = debug('worker:a'); b = debug('worker:b'); setInterval(function(){ a('doing some work'); }, 1000); setInterval(function(){ b('doing some work'); }, 1200); ``` ## Output streams By default `debug` will log to stderr, however this can be configured per-namespace by overriding the `log` method: Example [_stdout.js_](./examples/node/stdout.js): ```js var debug = require('debug'); var error = debug('app:error'); // by default stderr is used error('goes to stderr!'); var log = debug('app:log'); // set this namespace to log via console.log log.log = console.log.bind(console); // don't forget to bind to console! log('goes to stdout'); error('still goes to stderr!'); // set all output to go via console.info // overrides all per-namespace log settings debug.log = console.info.bind(console); error('now goes to stdout via console.info'); log('still goes to stdout, but via console.info now'); ``` ## Checking whether a debug target is enabled After you've created a debug instance, you can determine whether or not it is enabled by checking the `enabled` property: ```javascript const debug = require('debug')('http'); if (debug.enabled) { // do stuff... } ``` You can also manually toggle this property to force the debug instance to be enabled or disabled. ## Authors - TJ Holowaychuk - Nathan Rajlich - Andrew Rhyne ## Backers Support us with a monthly donation and help us continue our activities. 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Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # once Only call a function once. ## usage ```javascript var once = require('once') function load (file, cb) { cb = once(cb) loader.load('file') loader.once('load', cb) loader.once('error', cb) } ``` Or add to the Function.prototype in a responsible way: ```javascript // only has to be done once require('once').proto() function load (file, cb) { cb = cb.once() loader.load('file') loader.once('load', cb) loader.once('error', cb) } ``` Ironically, the prototype feature makes this module twice as complicated as necessary. To check whether you function has been called, use `fn.called`. Once the function is called for the first time the return value of the original function is saved in `fn.value` and subsequent calls will continue to return this value. ```javascript var once = require('once') function load (cb) { cb = once(cb) var stream = createStream() stream.once('data', cb) stream.once('end', function () { if (!cb.called) cb(new Error('not found')) }) } ``` ## `once.strict(func)` Throw an error if the function is called twice. Some functions are expected to be called only once. Using `once` for them would potentially hide logical errors. In the example below, the `greet` function has to call the callback only once: ```javascript function greet (name, cb) { // return is missing from the if statement // when no name is passed, the callback is called twice if (!name) cb('Hello anonymous') cb('Hello ' + name) } function log (msg) { console.log(msg) } // this will print 'Hello anonymous' but the logical error will be missed greet(null, once(msg)) // once.strict will print 'Hello anonymous' and throw an error when the callback will be called the second time greet(null, once.strict(msg)) ``` # is-extglob [](https://www.npmjs.com/package/is-extglob) [](https://npmjs.org/package/is-extglob) [](https://travis-ci.org/jonschlinkert/is-extglob) > Returns true if a string has an extglob. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save is-extglob ``` ## Usage ```js var isExtglob = require('is-extglob'); ``` **True** ```js isExtglob('?(abc)'); isExtglob('@(abc)'); isExtglob('!(abc)'); isExtglob('*(abc)'); isExtglob('+(abc)'); ``` **False** Escaped extglobs: ```js isExtglob('\\?(abc)'); isExtglob('\\@(abc)'); isExtglob('\\!(abc)'); isExtglob('\\*(abc)'); isExtglob('\\+(abc)'); ``` Everything else... ```js isExtglob('foo.js'); isExtglob('!foo.js'); isExtglob('*.js'); isExtglob('**/abc.js'); isExtglob('abc/*.js'); isExtglob('abc/(aaa|bbb).js'); isExtglob('abc/[a-z].js'); isExtglob('abc/{a,b}.js'); isExtglob('abc/?.js'); isExtglob('abc.js'); isExtglob('abc/def/ghi.js'); ``` ## History **v2.0** Adds support for escaping. Escaped exglobs no longer return true. ## About ### Related projects * [has-glob](https://www.npmjs.com/package/has-glob): Returns `true` if an array has a glob pattern. | [homepage](https://github.com/jonschlinkert/has-glob "Returns `true` if an array has a glob pattern.") * [is-glob](https://www.npmjs.com/package/is-glob): Returns `true` if the given string looks like a glob pattern or an extglob pattern… [more](https://github.com/jonschlinkert/is-glob) | [homepage](https://github.com/jonschlinkert/is-glob "Returns `true` if the given string looks like a glob pattern or an extglob pattern. This makes it easy to create code that only uses external modules like node-glob when necessary, resulting in much faster code execution and initialization time, and a bet") * [micromatch](https://www.npmjs.com/package/micromatch): Glob matching for javascript/node.js. A drop-in replacement and faster alternative to minimatch and multimatch. | [homepage](https://github.com/jonschlinkert/micromatch "Glob matching for javascript/node.js. A drop-in replacement and faster alternative to minimatch and multimatch.") ### Contributing Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). ### Building docs _(This document was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme) (a [verb](https://github.com/verbose/verb) generator), please don't edit the readme directly. Any changes to the readme must be made in [.verb.md](.verb.md).)_ To generate the readme and API documentation with [verb](https://github.com/verbose/verb): ```sh $ npm install -g verb verb-generate-readme && verb ``` ### Running tests Install dev dependencies: ```sh $ npm install -d && npm test ``` ### Author **Jon Schlinkert** * [github/jonschlinkert](https://github.com/jonschlinkert) * [twitter/jonschlinkert](http://twitter.com/jonschlinkert) ### License Copyright © 2016, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT license](https://github.com/jonschlinkert/is-extglob/blob/master/LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.1.31, on October 12, 2016._ Railroad-diagram Generator ========================== This is a small js library for generating railroad diagrams (like what [JSON.org](http://json.org) uses) using SVG. Railroad diagrams are a way of visually representing a grammar in a form that is more readable than using regular expressions or BNF. I think (though I haven't given it a lot of thought yet) that if it's easy to write a context-free grammar for the language, the corresponding railroad diagram will be easy as well. There are several railroad-diagram generators out there, but none of them had the visual appeal I wanted. [Here's an example of how they look!](http://www.xanthir.com/etc/railroad-diagrams/example.html) And [here's an online generator for you to play with and get SVG code from!](http://www.xanthir.com/etc/railroad-diagrams/generator.html) The library now exists in a Python port as well! See the information further down. Details ------- To use the library, just include the js and css files, and then call the Diagram() function. Its arguments are the components of the diagram (Diagram is a special form of Sequence). An alternative to Diagram() is ComplexDiagram() which is used to describe a complex type diagram. Components are either leaves or containers. The leaves: * Terminal(text) or a bare string - represents literal text * NonTerminal(text) - represents an instruction or another production * Comment(text) - a comment * Skip() - an empty line The containers: * Sequence(children) - like simple concatenation in a regex * Choice(index, children) - like | in a regex. The index argument specifies which child is the "normal" choice and should go in the middle * Optional(child, skip) - like ? in a regex. A shorthand for `Choice(1, [Skip(), child])`. If the optional `skip` parameter has the value `"skip"`, it instead puts the Skip() in the straight-line path, for when the "normal" behavior is to omit the item. * OneOrMore(child, repeat) - like + in a regex. The 'repeat' argument is optional, and specifies something that must go between the repetitions. * ZeroOrMore(child, repeat, skip) - like * in a regex. A shorthand for `Optional(OneOrMore(child, repeat))`. The optional `skip` parameter is identical to Optional(). For convenience, each component can be called with or without `new`. If called without `new`, the container components become n-ary; that is, you can say either `new Sequence([A, B])` or just `Sequence(A,B)`. After constructing a Diagram, call `.format(...padding)` on it, specifying 0-4 padding values (just like CSS) for some additional "breathing space" around the diagram (the paddings default to 20px). The result can either be `.toString()`'d for the markup, or `.toSVG()`'d for an `<svg>` element, which can then be immediately inserted to the document. As a convenience, Diagram also has an `.addTo(element)` method, which immediately converts it to SVG and appends it to the referenced element with default paddings. `element` defaults to `document.body`. Options ------- There are a few options you can tweak, at the bottom of the file. Just tweak either until the diagram looks like what you want. You can also change the CSS file - feel free to tweak to your heart's content. Note, though, that if you change the text sizes in the CSS, you'll have to go adjust the metrics for the leaf nodes as well. * VERTICAL_SEPARATION - sets the minimum amount of vertical separation between two items. Note that the stroke width isn't counted when computing the separation; this shouldn't be relevant unless you have a very small separation or very large stroke width. * ARC_RADIUS - the radius of the arcs used in the branching containers like Choice. This has a relatively large effect on the size of non-trivial diagrams. Both tight and loose values look good, depending on what you're going for. * DIAGRAM_CLASS - the class set on the root `<svg>` element of each diagram, for use in the CSS stylesheet. * STROKE_ODD_PIXEL_LENGTH - the default stylesheet uses odd pixel lengths for 'stroke'. Due to rasterization artifacts, they look best when the item has been translated half a pixel in both directions. If you change the styling to use a stroke with even pixel lengths, you'll want to set this variable to `false`. * INTERNAL_ALIGNMENT - when some branches of a container are narrower than others, this determines how they're aligned in the extra space. Defaults to "center", but can be set to "left" or "right". Caveats ------- At this early stage, the generator is feature-complete and works as intended, but still has several TODOs: * The font-sizes are hard-coded right now, and the font handling in general is very dumb - I'm just guessing at some metrics that are probably "good enough" rather than measuring things properly. Python Port ----------- In addition to the canonical JS version, the library now exists as a Python library as well. Using it is basically identical. The config variables are globals in the file, and so may be adjusted either manually or via tweaking from inside your program. The main difference from the JS port is how you extract the string from the Diagram. You'll find a `writeSvg(writerFunc)` method on `Diagram`, which takes a callback of one argument and passes it the string form of the diagram. For example, it can be used like `Diagram(...).writeSvg(sys.stdout.write)` to write to stdout. **Note**: the callback will be called multiple times as it builds up the string, not just once with the whole thing. If you need it all at once, consider something like a `StringIO` as an easy way to collect it into a single string. License ------- This document and all associated files in the github project are licensed under [CC0](http://creativecommons.org/publicdomain/zero/1.0/) . This means you can reuse, remix, or otherwise appropriate this project for your own use **without restriction**. (The actual legal meaning can be found at the above link.) Don't ask me for permission to use any part of this project, **just use it**. I would appreciate attribution, but that is not required by the license. Like `chown -R`. Takes the same arguments as `fs.chown()` # path-parse [](https://travis-ci.org/jbgutierrez/path-parse) > Node.js [`path.parse(pathString)`](https://nodejs.org/api/path.html#path_path_parse_pathstring) [ponyfill](https://ponyfill.com). ## Install ``` $ npm install --save path-parse ``` ## Usage ```js var pathParse = require('path-parse'); pathParse('/home/user/dir/file.txt'); //=> { // root : "/", // dir : "/home/user/dir", // base : "file.txt", // ext : ".txt", // name : "file" // } ``` ## API See [`path.parse(pathString)`](https://nodejs.org/api/path.html#path_path_parse_pathstring) docs. ### pathParse(path) ### pathParse.posix(path) The Posix specific version. ### pathParse.win32(path) The Windows specific version. ## License MIT © [Javier Blanco](http://jbgutierrez.info) assemblyscript-json # assemblyscript-json ## Table of contents ### Namespaces - [JSON](modules/json.md) ### Classes - [DecoderState](classes/decoderstate.md) - [JSONDecoder](classes/jsondecoder.md) - [JSONEncoder](classes/jsonencoder.md) - [JSONHandler](classes/jsonhandler.md) - [ThrowingJSONHandler](classes/throwingjsonhandler.md) ### Estraverse [](http://travis-ci.org/estools/estraverse) Estraverse ([estraverse](http://github.com/estools/estraverse)) is [ECMAScript](http://www.ecma-international.org/publications/standards/Ecma-262.htm) traversal functions from [esmangle project](http://github.com/estools/esmangle). ### Documentation You can find usage docs at [wiki page](https://github.com/estools/estraverse/wiki/Usage). ### Example Usage The following code will output all variables declared at the root of a file. ```javascript estraverse.traverse(ast, { enter: function (node, parent) { if (node.type == 'FunctionExpression' || node.type == 'FunctionDeclaration') return estraverse.VisitorOption.Skip; }, leave: function (node, parent) { if (node.type == 'VariableDeclarator') console.log(node.id.name); } }); ``` We can use `this.skip`, `this.remove` and `this.break` functions instead of using Skip, Remove and Break. ```javascript estraverse.traverse(ast, { enter: function (node) { this.break(); } }); ``` And estraverse provides `estraverse.replace` function. When returning node from `enter`/`leave`, current node is replaced with it. ```javascript result = estraverse.replace(tree, { enter: function (node) { // Replace it with replaced. if (node.type === 'Literal') return replaced; } }); ``` By passing `visitor.keys` mapping, we can extend estraverse traversing functionality. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Extending the existing traversing rules. keys: { // TargetNodeName: [ 'keys', 'containing', 'the', 'other', '**node**' ] TestExpression: ['argument'] } }); ``` By passing `visitor.fallback` option, we can control the behavior when encountering unknown nodes. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Iterating the child **nodes** of unknown nodes. fallback: 'iteration' }); ``` When `visitor.fallback` is a function, we can determine which keys to visit on each node. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Skip the `argument` property of each node fallback: function(node) { return Object.keys(node).filter(function(key) { return key !== 'argument'; }); } }); ``` ### License Copyright (C) 2012-2016 [Yusuke Suzuki](http://github.com/Constellation) (twitter: [@Constellation](http://twitter.com/Constellation)) and other contributors. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. <a name="table"></a> # Table > Produces a string that represents array data in a text table. [](https://github.com/gajus/table/actions) [](https://coveralls.io/github/gajus/table) [](https://www.npmjs.org/package/table) [](https://github.com/gajus/canonical) [](https://twitter.com/kuizinas) * [Table](#table) * [Features](#table-features) * [Install](#table-install) * [Usage](#table-usage) * [API](#table-api) * [table](#table-api-table-1) * [createStream](#table-api-createstream) * [getBorderCharacters](#table-api-getbordercharacters)  <a name="table-features"></a> ## Features * Works with strings containing [fullwidth](https://en.wikipedia.org/wiki/Halfwidth_and_fullwidth_forms) characters. * Works with strings containing [ANSI escape codes](https://en.wikipedia.org/wiki/ANSI_escape_code). * Configurable border characters. * Configurable content alignment per column. * Configurable content padding per column. * Configurable column width. * Text wrapping. <a name="table-install"></a> ## Install ```bash npm install table ``` [](https://www.buymeacoffee.com/gajus) [](https://www.patreon.com/gajus) <a name="table-usage"></a> ## Usage ```js import { table } from 'table'; // Using commonjs? // const { table } = require('table'); const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'] ]; console.log(table(data)); ``` ``` ╔════╤════╤════╗ ║ 0A │ 0B │ 0C ║ ╟────┼────┼────╢ ║ 1A │ 1B │ 1C ║ ╟────┼────┼────╢ ║ 2A │ 2B │ 2C ║ ╚════╧════╧════╝ ``` <a name="table-api"></a> ## API <a name="table-api-table-1"></a> ### table Returns the string in the table format **Parameters:** - **_data_:** The data to display - Type: `any[][]` - Required: `true` - **_config_:** Table configuration - Type: `object` - Required: `false` <a name="table-api-table-1-config-border"></a> ##### config.border Type: `{ [type: string]: string }`\ Default: `honeywell` [template](#getbordercharacters) Custom borders. The keys are any of: - `topLeft`, `topRight`, `topBody`,`topJoin` - `bottomLeft`, `bottomRight`, `bottomBody`, `bottomJoin` - `joinLeft`, `joinRight`, `joinBody`, `joinJoin` - `bodyLeft`, `bodyRight`, `bodyJoin` - `headerJoin` ```js const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'] ]; const config = { border: { topBody: `─`, topJoin: `┬`, topLeft: `┌`, topRight: `┐`, bottomBody: `─`, bottomJoin: `┴`, bottomLeft: `└`, bottomRight: `┘`, bodyLeft: `│`, bodyRight: `│`, bodyJoin: `│`, joinBody: `─`, joinLeft: `├`, joinRight: `┤`, joinJoin: `┼` } }; console.log(table(data, config)); ``` ``` ┌────┬────┬────┐ │ 0A │ 0B │ 0C │ ├────┼────┼────┤ │ 1A │ 1B │ 1C │ ├────┼────┼────┤ │ 2A │ 2B │ 2C │ └────┴────┴────┘ ``` <a name="table-api-table-1-config-drawverticalline"></a> ##### config.drawVerticalLine Type: `(lineIndex: number, columnCount: number) => boolean`\ Default: `() => true` It is used to tell whether to draw a vertical line. This callback is called for each vertical border of the table. If the table has `n` columns, then the `index` parameter is alternatively received all numbers in range `[0, n]` inclusively. ```js const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'], ['3A', '3B', '3C'], ['4A', '4B', '4C'] ]; const config = { drawVerticalLine: (lineIndex, columnCount) => { return lineIndex === 0 || lineIndex === columnCount; } }; console.log(table(data, config)); ``` ``` ╔════════════╗ ║ 0A 0B 0C ║ ╟────────────╢ ║ 1A 1B 1C ║ ╟────────────╢ ║ 2A 2B 2C ║ ╟────────────╢ ║ 3A 3B 3C ║ ╟────────────╢ ║ 4A 4B 4C ║ ╚════════════╝ ``` <a name="table-api-table-1-config-drawhorizontalline"></a> ##### config.drawHorizontalLine Type: `(lineIndex: number, rowCount: number) => boolean`\ Default: `() => true` It is used to tell whether to draw a horizontal line. This callback is called for each horizontal border of the table. If the table has `n` rows, then the `index` parameter is alternatively received all numbers in range `[0, n]` inclusively. If the table has `n` rows and contains the header, then the range will be `[0, n+1]` inclusively. ```js const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'], ['3A', '3B', '3C'], ['4A', '4B', '4C'] ]; const config = { drawHorizontalLine: (lineIndex, rowCount) => { return lineIndex === 0 || lineIndex === 1 || lineIndex === rowCount - 1 || lineIndex === rowCount; } }; console.log(table(data, config)); ``` ``` ╔════╤════╤════╗ ║ 0A │ 0B │ 0C ║ ╟────┼────┼────╢ ║ 1A │ 1B │ 1C ║ ║ 2A │ 2B │ 2C ║ ║ 3A │ 3B │ 3C ║ ╟────┼────┼────╢ ║ 4A │ 4B │ 4C ║ ╚════╧════╧════╝ ``` <a name="table-api-table-1-config-singleline"></a> ##### config.singleLine Type: `boolean`\ Default: `false` If `true`, horizontal lines inside the table are not drawn. This option also overrides the `config.drawHorizontalLine` if specified. ```js const data = [ ['-rw-r--r--', '1', 'pandorym', 'staff', '1529', 'May 23 11:25', 'LICENSE'], ['-rw-r--r--', '1', 'pandorym', 'staff', '16327', 'May 23 11:58', 'README.md'], ['drwxr-xr-x', '76', 'pandorym', 'staff', '2432', 'May 23 12:02', 'dist'], ['drwxr-xr-x', '634', 'pandorym', 'staff', '20288', 'May 23 11:54', 'node_modules'], ['-rw-r--r--', '1,', 'pandorym', 'staff', '525688', 'May 23 11:52', 'package-lock.json'], ['-rw-r--r--@', '1', 'pandorym', 'staff', '2440', 'May 23 11:25', 'package.json'], ['drwxr-xr-x', '27', 'pandorym', 'staff', '864', 'May 23 11:25', 'src'], ['drwxr-xr-x', '20', 'pandorym', 'staff', '640', 'May 23 11:25', 'test'], ]; const config = { singleLine: true }; console.log(table(data, config)); ``` ``` ╔═════════════╤═════╤══════════╤═══════╤════════╤══════════════╤═══════════════════╗ ║ -rw-r--r-- │ 1 │ pandorym │ staff │ 1529 │ May 23 11:25 │ LICENSE ║ ║ -rw-r--r-- │ 1 │ pandorym │ staff │ 16327 │ May 23 11:58 │ README.md ║ ║ drwxr-xr-x │ 76 │ pandorym │ staff │ 2432 │ May 23 12:02 │ dist ║ ║ drwxr-xr-x │ 634 │ pandorym │ staff │ 20288 │ May 23 11:54 │ node_modules ║ ║ -rw-r--r-- │ 1, │ pandorym │ staff │ 525688 │ May 23 11:52 │ package-lock.json ║ ║ -rw-r--r--@ │ 1 │ pandorym │ staff │ 2440 │ May 23 11:25 │ package.json ║ ║ drwxr-xr-x │ 27 │ pandorym │ staff │ 864 │ May 23 11:25 │ src ║ ║ drwxr-xr-x │ 20 │ pandorym │ staff │ 640 │ May 23 11:25 │ test ║ ╚═════════════╧═════╧══════════╧═══════╧════════╧══════════════╧═══════════════════╝ ``` <a name="table-api-table-1-config-columns"></a> ##### config.columns Type: `Column[] | { [columnIndex: number]: Column }` Column specific configurations. <a name="table-api-table-1-config-columns-config-columns-width"></a> ###### config.columns[*].width Type: `number`\ Default: the maximum cell widths of the column Column width (excluding the paddings). ```js const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'] ]; const config = { columns: { 1: { width: 10 } } }; console.log(table(data, config)); ``` ``` ╔════╤════════════╤════╗ ║ 0A │ 0B │ 0C ║ ╟────┼────────────┼────╢ ║ 1A │ 1B │ 1C ║ ╟────┼────────────┼────╢ ║ 2A │ 2B │ 2C ║ ╚════╧════════════╧════╝ ``` <a name="table-api-table-1-config-columns-config-columns-alignment"></a> ###### config.columns[*].alignment Type: `'center' | 'justify' | 'left' | 'right'`\ Default: `'left'` Cell content horizontal alignment ```js const data = [ ['0A', '0B', '0C', '0D 0E 0F'], ['1A', '1B', '1C', '1D 1E 1F'], ['2A', '2B', '2C', '2D 2E 2F'], ]; const config = { columnDefault: { width: 10, }, columns: [ { alignment: 'left' }, { alignment: 'center' }, { alignment: 'right' }, { alignment: 'justify' } ], }; console.log(table(data, config)); ``` ``` ╔════════════╤════════════╤════════════╤════════════╗ ║ 0A │ 0B │ 0C │ 0D 0E 0F ║ ╟────────────┼────────────┼────────────┼────────────╢ ║ 1A │ 1B │ 1C │ 1D 1E 1F ║ ╟────────────┼────────────┼────────────┼────────────╢ ║ 2A │ 2B │ 2C │ 2D 2E 2F ║ ╚════════════╧════════════╧════════════╧════════════╝ ``` <a name="table-api-table-1-config-columns-config-columns-verticalalignment"></a> ###### config.columns[*].verticalAlignment Type: `'top' | 'middle' | 'bottom'`\ Default: `'top'` Cell content vertical alignment ```js const data = [ ['A', 'B', 'C', 'DEF'], ]; const config = { columnDefault: { width: 1, }, columns: [ { verticalAlignment: 'top' }, { verticalAlignment: 'middle' }, { verticalAlignment: 'bottom' }, ], }; console.log(table(data, config)); ``` ``` ╔═══╤═══╤═══╤═══╗ ║ A │ │ │ D ║ ║ │ B │ │ E ║ ║ │ │ C │ F ║ ╚═══╧═══╧═══╧═══╝ ``` <a name="table-api-table-1-config-columns-config-columns-paddingleft"></a> ###### config.columns[*].paddingLeft Type: `number`\ Default: `1` The number of whitespaces used to pad the content on the left. <a name="table-api-table-1-config-columns-config-columns-paddingright"></a> ###### config.columns[*].paddingRight Type: `number`\ Default: `1` The number of whitespaces used to pad the content on the right. The `paddingLeft` and `paddingRight` options do not count on the column width. So the column has `width = 5`, `paddingLeft = 2` and `paddingRight = 2` will have the total width is `9`. ```js const data = [ ['0A', 'AABBCC', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'] ]; const config = { columns: [ { paddingLeft: 3 }, { width: 2, paddingRight: 3 } ] }; console.log(table(data, config)); ``` ``` ╔══════╤══════╤════╗ ║ 0A │ AA │ 0C ║ ║ │ BB │ ║ ║ │ CC │ ║ ╟──────┼──────┼────╢ ║ 1A │ 1B │ 1C ║ ╟──────┼──────┼────╢ ║ 2A │ 2B │ 2C ║ ╚══════╧══════╧════╝ ``` <a name="table-api-table-1-config-columns-config-columns-truncate"></a> ###### config.columns[*].truncate Type: `number`\ Default: `Infinity` The number of characters is which the content will be truncated. To handle a content that overflows the container width, `table` package implements [text wrapping](#config.columns[*].wrapWord). However, sometimes you may want to truncate content that is too long to be displayed in the table. ```js const data = [ ['Lorem ipsum dolor sit amet, consectetur adipiscing elit. Phasellus pulvinar nibh sed mauris convallis dapibus. Nunc venenatis tempus nulla sit amet viverra.'] ]; const config = { columns: [ { width: 20, truncate: 100 } ] }; console.log(table(data, config)); ``` ``` ╔══════════════════════╗ ║ Lorem ipsum dolor si ║ ║ t amet, consectetur ║ ║ adipiscing elit. Pha ║ ║ sellus pulvinar nibh ║ ║ sed mauris convall… ║ ╚══════════════════════╝ ``` <a name="table-api-table-1-config-columns-config-columns-wrapword"></a> ###### config.columns[*].wrapWord Type: `boolean`\ Default: `false` The `table` package implements auto text wrapping, i.e., text that has the width greater than the container width will be separated into multiple lines at the nearest space or one of the special characters: `\|/_.,;-`. When `wrapWord` is `false`: ```js const data = [ ['Lorem ipsum dolor sit amet, consectetur adipiscing elit. Phasellus pulvinar nibh sed mauris convallis dapibus. Nunc venenatis tempus nulla sit amet viverra.'] ]; const config = { columns: [ { width: 20 } ] }; console.log(table(data, config)); ``` ``` ╔══════════════════════╗ ║ Lorem ipsum dolor si ║ ║ t amet, consectetur ║ ║ adipiscing elit. Pha ║ ║ sellus pulvinar nibh ║ ║ sed mauris convallis ║ ║ dapibus. Nunc venena ║ ║ tis tempus nulla sit ║ ║ amet viverra. ║ ╚══════════════════════╝ ``` When `wrapWord` is `true`: ``` ╔══════════════════════╗ ║ Lorem ipsum dolor ║ ║ sit amet, ║ ║ consectetur ║ ║ adipiscing elit. ║ ║ Phasellus pulvinar ║ ║ nibh sed mauris ║ ║ convallis dapibus. ║ ║ Nunc venenatis ║ ║ tempus nulla sit ║ ║ amet viverra. ║ ╚══════════════════════╝ ``` <a name="table-api-table-1-config-columndefault"></a> ##### config.columnDefault Type: `Column`\ Default: `{}` The default configuration for all columns. Column-specific settings will overwrite the default values. <a name="table-api-table-1-config-header"></a> ##### config.header Type: `object` Header configuration. *Deprecated in favor of the new spanning cells API.* The header configuration inherits the most of the column's, except: - `content` **{string}**: the header content. - `width:` calculate based on the content width automatically. - `alignment:` `center` be default. - `verticalAlignment:` is not supported. - `config.border.topJoin` will be `config.border.topBody` for prettier. ```js const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'], ]; const config = { columnDefault: { width: 10, }, header: { alignment: 'center', content: 'THE HEADER\nThis is the table about something', }, } console.log(table(data, config)); ``` ``` ╔══════════════════════════════════════╗ ║ THE HEADER ║ ║ This is the table about something ║ ╟────────────┬────────────┬────────────╢ ║ 0A │ 0B │ 0C ║ ╟────────────┼────────────┼────────────╢ ║ 1A │ 1B │ 1C ║ ╟────────────┼────────────┼────────────╢ ║ 2A │ 2B │ 2C ║ ╚════════════╧════════════╧════════════╝ ``` <a name="table-api-table-1-config-spanningcells"></a> ##### config.spanningCells Type: `SpanningCellConfig[]` Spanning cells configuration. The configuration should be straightforward: just specify an array of minimal cell configurations including the position of top-left cell and the number of columns and/or rows will be expanded from it. The content of overlap cells will be ignored to make the `data` shape be consistent. By default, the configuration of column that the top-left cell belongs to will be applied to the whole spanning cell, except: * The `width` will be summed up of all spanning columns. * The `paddingRight` will be received from the right-most column intentionally. Advances customized column-like styles can be configurable to each spanning cell to overwrite the default behavior. ```js const data = [ ['Test Coverage Report', '', '', '', '', ''], ['Module', 'Component', 'Test Cases', 'Failures', 'Durations', 'Success Rate'], ['Services', 'User', '50', '30', '3m 7s', '60.0%'], ['', 'Payment', '100', '80', '7m 15s', '80.0%'], ['Subtotal', '', '150', '110', '10m 22s', '73.3%'], ['Controllers', 'User', '24', '18', '1m 30s', '75.0%'], ['', 'Payment', '30', '24', '50s', '80.0%'], ['Subtotal', '', '54', '42', '2m 20s', '77.8%'], ['Total', '', '204', '152', '12m 42s', '74.5%'], ]; const config = { columns: [ { alignment: 'center', width: 12 }, { alignment: 'center', width: 10 }, { alignment: 'right' }, { alignment: 'right' }, { alignment: 'right' }, { alignment: 'right' } ], spanningCells: [ { col: 0, row: 0, colSpan: 6 }, { col: 0, row: 2, rowSpan: 2, verticalAlignment: 'middle'}, { col: 0, row: 4, colSpan: 2, alignment: 'right'}, { col: 0, row: 5, rowSpan: 2, verticalAlignment: 'middle'}, { col: 0, row: 7, colSpan: 2, alignment: 'right' }, { col: 0, row: 8, colSpan: 2, alignment: 'right' } ], }; console.log(table(data, config)); ``` ``` ╔══════════════════════════════════════════════════════════════════════════════╗ ║ Test Coverage Report ║ ╟──────────────┬────────────┬────────────┬──────────┬───────────┬──────────────╢ ║ Module │ Component │ Test Cases │ Failures │ Durations │ Success Rate ║ ╟──────────────┼────────────┼────────────┼──────────┼───────────┼──────────────╢ ║ │ User │ 50 │ 30 │ 3m 7s │ 60.0% ║ ║ Services ├────────────┼────────────┼──────────┼───────────┼──────────────╢ ║ │ Payment │ 100 │ 80 │ 7m 15s │ 80.0% ║ ╟──────────────┴────────────┼────────────┼──────────┼───────────┼──────────────╢ ║ Subtotal │ 150 │ 110 │ 10m 22s │ 73.3% ║ ╟──────────────┬────────────┼────────────┼──────────┼───────────┼──────────────╢ ║ │ User │ 24 │ 18 │ 1m 30s │ 75.0% ║ ║ Controllers ├────────────┼────────────┼──────────┼───────────┼──────────────╢ ║ │ Payment │ 30 │ 24 │ 50s │ 80.0% ║ ╟──────────────┴────────────┼────────────┼──────────┼───────────┼──────────────╢ ║ Subtotal │ 54 │ 42 │ 2m 20s │ 77.8% ║ ╟───────────────────────────┼────────────┼──────────┼───────────┼──────────────╢ ║ Total │ 204 │ 152 │ 12m 42s │ 74.5% ║ ╚═══════════════════════════╧════════════╧══════════╧═══════════╧══════════════╝ ``` <a name="table-api-createstream"></a> ### createStream `table` package exports `createStream` function used to draw a table and append rows. **Parameter:** - _**config:**_ the same as `table`'s, except `config.columnDefault.width` and `config.columnCount` must be provided. ```js import { createStream } from 'table'; const config = { columnDefault: { width: 50 }, columnCount: 1 }; const stream = createStream(config); setInterval(() => { stream.write([new Date()]); }, 500); ```  `table` package uses ANSI escape codes to overwrite the output of the last line when a new row is printed. The underlying implementation is explained in this [Stack Overflow answer](http://stackoverflow.com/a/32938658/368691). Streaming supports all of the configuration properties and functionality of a static table (such as auto text wrapping, alignment and padding), e.g. ```js import { createStream } from 'table'; import _ from 'lodash'; const config = { columnDefault: { width: 50 }, columnCount: 3, columns: [ { width: 10, alignment: 'right' }, { alignment: 'center' }, { width: 10 } ] }; const stream = createStream(config); let i = 0; setInterval(() => { let random; random = _.sample('abcdefghijklmnopqrstuvwxyz', _.random(1, 30)).join(''); stream.write([i++, new Date(), random]); }, 500); ```  <a name="table-api-getbordercharacters"></a> ### getBorderCharacters **Parameter:** - **_template_** - Type: `'honeywell' | 'norc' | 'ramac' | 'void'` - Required: `true` You can load one of the predefined border templates using `getBorderCharacters` function. ```js import { table, getBorderCharacters } from 'table'; const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'] ]; const config = { border: getBorderCharacters(`name of the template`) }; console.log(table(data, config)); ``` ``` # honeywell ╔════╤════╤════╗ ║ 0A │ 0B │ 0C ║ ╟────┼────┼────╢ ║ 1A │ 1B │ 1C ║ ╟────┼────┼────╢ ║ 2A │ 2B │ 2C ║ ╚════╧════╧════╝ # norc ┌────┬────┬────┐ │ 0A │ 0B │ 0C │ ├────┼────┼────┤ │ 1A │ 1B │ 1C │ ├────┼────┼────┤ │ 2A │ 2B │ 2C │ └────┴────┴────┘ # ramac (ASCII; for use in terminals that do not support Unicode characters) +----+----+----+ | 0A | 0B | 0C | |----|----|----| | 1A | 1B | 1C | |----|----|----| | 2A | 2B | 2C | +----+----+----+ # void (no borders; see "borderless table" section of the documentation) 0A 0B 0C 1A 1B 1C 2A 2B 2C ``` Raise [an issue](https://github.com/gajus/table/issues) if you'd like to contribute a new border template. <a name="table-api-getbordercharacters-borderless-table"></a> #### Borderless Table Simply using `void` border character template creates a table with a lot of unnecessary spacing. To create a more pleasant to the eye table, reset the padding and remove the joining rows, e.g. ```js const output = table(data, { border: getBorderCharacters('void'), columnDefault: { paddingLeft: 0, paddingRight: 1 }, drawHorizontalLine: () => false } ); console.log(output); ``` ``` 0A 0B 0C 1A 1B 1C 2A 2B 2C ``` # randexp.js randexp will generate a random string that matches a given RegExp Javascript object. [](http://travis-ci.org/fent/randexp.js) [](https://david-dm.org/fent/randexp.js) [](https://codecov.io/gh/fent/randexp.js) # Usage ```js var RandExp = require('randexp'); // supports grouping and piping new RandExp(/hello+ (world|to you)/).gen(); // => hellooooooooooooooooooo world // sets and ranges and references new RandExp(/<([a-z]\w{0,20})>foo<\1>/).gen(); // => <m5xhdg>foo<m5xhdg> // wildcard new RandExp(/random stuff: .+/).gen(); // => random stuff: l3m;Hf9XYbI [YPaxV>U*4-_F!WXQh9>;rH3i l!8.zoh?[utt1OWFQrE ^~8zEQm]~tK // ignore case new RandExp(/xxx xtreme dragon warrior xxx/i).gen(); // => xxx xtReME dRAGON warRiOR xXX // dynamic regexp shortcut new RandExp('(sun|mon|tue|wednes|thurs|fri|satur)day', 'i'); // is the same as new RandExp(new RegExp('(sun|mon|tue|wednes|thurs|fri|satur)day', 'i')); ``` If you're only going to use `gen()` once with a regexp and want slightly shorter syntax for it ```js var randexp = require('randexp').randexp; randexp(/[1-6]/); // 4 randexp('great|good( job)?|excellent'); // great ``` If you miss the old syntax ```js require('randexp').sugar(); /yes|no|maybe|i don't know/.gen(); // maybe ``` # Motivation Regular expressions are used in every language, every programmer is familiar with them. Regex can be used to easily express complex strings. What better way to generate a random string than with a language you can use to express the string you want? Thanks to [String-Random](http://search.cpan.org/~steve/String-Random-0.22/lib/String/Random.pm) for giving me the idea to make this in the first place and [randexp](https://github.com/benburkert/randexp) for the sweet `.gen()` syntax. # Default Range The default generated character range includes printable ASCII. In order to add or remove characters, a `defaultRange` attribute is exposed. you can `subtract(from, to)` and `add(from, to)` ```js var randexp = new RandExp(/random stuff: .+/); randexp.defaultRange.subtract(32, 126); randexp.defaultRange.add(0, 65535); randexp.gen(); // => random stuff: 湐箻ໜ䫴␩⶛㳸長���邓蕲뤀쑡篷皇硬剈궦佔칗븛뀃匫鴔事좍ﯣ⭼ꝏ䭍詳蒂䥂뽭 ``` # Custom PRNG The default randomness is provided by `Math.random()`. If you need to use a seedable or cryptographic PRNG, you can override `RandExp.prototype.randInt` or `randexp.randInt` (where `randexp` is an instance of `RandExp`). `randInt(from, to)` accepts an inclusive range and returns a randomly selected number within that range. # Infinite Repetitionals Repetitional tokens such as `*`, `+`, and `{3,}` have an infinite max range. In this case, randexp looks at its min and adds 100 to it to get a useable max value. If you want to use another int other than 100 you can change the `max` property in `RandExp.prototype` or the RandExp instance. ```js var randexp = new RandExp(/no{1,}/); randexp.max = 1000000; ``` With `RandExp.sugar()` ```js var regexp = /(hi)*/; regexp.max = 1000000; ``` # Bad Regular Expressions There are some regular expressions which can never match any string. * Ones with badly placed positionals such as `/a^/` and `/$c/m`. Randexp will ignore positional tokens. * Back references to non-existing groups like `/(a)\1\2/`. Randexp will ignore those references, returning an empty string for them. If the group exists only after the reference is used such as in `/\1 (hey)/`, it will too be ignored. * Custom negated character sets with two sets inside that cancel each other out. Example: `/[^\w\W]/`. If you give this to randexp, it will return an empty string for this set since it can't match anything. # Projects based on randexp.js ## JSON-Schema Faker Use generators to populate JSON Schema samples. See: [jsf on github](https://github.com/json-schema-faker/json-schema-faker/) and [jsf demo page](http://json-schema-faker.js.org/). # Install ### Node.js npm install randexp ### Browser Download the [minified version](https://github.com/fent/randexp.js/releases) from the latest release. # Tests Tests are written with [mocha](https://mochajs.org) ```bash npm test ``` # License MIT <img align="right" alt="Ajv logo" width="160" src="https://ajv.js.org/img/ajv.svg"> &nbsp; # Ajv JSON schema validator The fastest JSON validator for Node.js and browser. Supports JSON Schema draft-04/06/07/2019-09/2020-12 ([draft-04 support](https://ajv.js.org/json-schema.html#draft-04) requires ajv-draft-04 package) and JSON Type Definition [RFC8927](https://datatracker.ietf.org/doc/rfc8927/). 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We welcome implementing new features that will benefit many users and ideas to improve our documentation. Please review [Contributing guidelines](./CONTRIBUTING.md) and [Code components](https://ajv.js.org/components.html). ## Documentation All documentation is available on the [Ajv website](https://ajv.js.org). Some useful site links: - [Getting started](https://ajv.js.org/guide/getting-started.html) - [JSON Schema vs JSON Type Definition](https://ajv.js.org/guide/schema-language.html) - [API reference](https://ajv.js.org/api.html) - [Strict mode](https://ajv.js.org/strict-mode.html) - [Standalone validation code](https://ajv.js.org/standalone.html) - [Security considerations](https://ajv.js.org/security.html) - [Command line interface](https://ajv.js.org/packages/ajv-cli.html) - [Frequently Asked Questions](https://ajv.js.org/faq.html) ## <a name="sponsors"></a>Please [sponsor Ajv development](https://github.com/sponsors/epoberezkin) Since I asked to support Ajv development 40 people and 6 organizations contributed via GitHub and OpenCollective - this support helped receiving the MOSS grant! Your continuing support is very important - the funds will be used to develop and maintain Ajv once the next major version is released. Please sponsor Ajv via: - [GitHub sponsors page](https://github.com/sponsors/epoberezkin) (GitHub will match it) - [Ajv Open Collective️](https://opencollective.com/ajv) Thank you. #### Open Collective sponsors <a href="https://opencollective.com/ajv"><img src="https://opencollective.com/ajv/individuals.svg?width=890"></a> <a href="https://opencollective.com/ajv/organization/0/website"><img src="https://opencollective.com/ajv/organization/0/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/1/website"><img src="https://opencollective.com/ajv/organization/1/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/2/website"><img src="https://opencollective.com/ajv/organization/2/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/3/website"><img src="https://opencollective.com/ajv/organization/3/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/4/website"><img src="https://opencollective.com/ajv/organization/4/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/5/website"><img src="https://opencollective.com/ajv/organization/5/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/6/website"><img src="https://opencollective.com/ajv/organization/6/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/7/website"><img src="https://opencollective.com/ajv/organization/7/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/8/website"><img src="https://opencollective.com/ajv/organization/8/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/9/website"><img src="https://opencollective.com/ajv/organization/9/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/10/website"><img src="https://opencollective.com/ajv/organization/10/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/11/website"><img src="https://opencollective.com/ajv/organization/11/avatar.svg"></a> ## Performance Ajv generates code to turn JSON Schemas into super-fast validation functions that are efficient for v8 optimization. Currently Ajv is the fastest and the most standard compliant validator according to these benchmarks: - [json-schema-benchmark](https://github.com/ebdrup/json-schema-benchmark) - 50% faster than the second place - [jsck benchmark](https://github.com/pandastrike/jsck#benchmarks) - 20-190% faster - [z-schema benchmark](https://rawgit.com/zaggino/z-schema/master/benchmark/results.html) - [themis benchmark](https://cdn.rawgit.com/playlyfe/themis/master/benchmark/results.html) Performance of different validators by [json-schema-benchmark](https://github.com/ebdrup/json-schema-benchmark): [](https://github.com/ebdrup/json-schema-benchmark/blob/master/README.md#performance) ## Features - Ajv implements JSON Schema [draft-06/07/2019-09/2020-12](http://json-schema.org/) standards (draft-04 is supported in v6): - all validation keywords (see [JSON Schema validation keywords](https://ajv.js.org/json-schema.html)) - [OpenAPI](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.3.md) extensions: - NEW: keyword [discriminator](https://ajv.js.org/json-schema.html#discriminator). - keyword [nullable](https://ajv.js.org/json-schema.html#nullable). - full support of remote references (remote schemas have to be added with `addSchema` or compiled to be available) - support of recursive references between schemas - correct string lengths for strings with unicode pairs - JSON Schema [formats](https://ajv.js.org/guide/formats.html) (with [ajv-formats](https://github.com/ajv-validator/ajv-formats) plugin). - [validates schemas against meta-schema](https://ajv.js.org/api.html#api-validateschema) - NEW: supports [JSON Type Definition](https://datatracker.ietf.org/doc/rfc8927/): - all keywords (see [JSON Type Definition schema forms](https://ajv.js.org/json-type-definition.html)) - meta-schema for JTD schemas - "union" keyword and user-defined keywords (can be used inside "metadata" member of the schema) - supports [browsers](https://ajv.js.org/guide/environments.html#browsers) and Node.js 10.x - current - [asynchronous loading](https://ajv.js.org/guide/managing-schemas.html#asynchronous-schema-loading) of referenced schemas during compilation - "All errors" validation mode with [option allErrors](https://ajv.js.org/options.html#allerrors) - [error messages with parameters](https://ajv.js.org/api.html#validation-errors) describing error reasons to allow error message generation - i18n error messages support with [ajv-i18n](https://github.com/ajv-validator/ajv-i18n) package - [removing-additional-properties](https://ajv.js.org/guide/modifying-data.html#removing-additional-properties) - [assigning defaults](https://ajv.js.org/guide/modifying-data.html#assigning-defaults) to missing properties and items - [coercing data](https://ajv.js.org/guide/modifying-data.html#coercing-data-types) to the types specified in `type` keywords - [user-defined keywords](https://ajv.js.org/guide/user-keywords.html) - additional extension keywords with [ajv-keywords](https://github.com/ajv-validator/ajv-keywords) package - [\$data reference](https://ajv.js.org/guide/combining-schemas.html#data-reference) to use values from the validated data as values for the schema keywords - [asynchronous validation](https://ajv.js.org/guide/async-validation.html) of user-defined formats and keywords ## Install To install version 8: ``` npm install ajv ``` ## <a name="usage"></a>Getting started Try it in the Node.js REPL: https://runkit.com/npm/ajv In JavaScript: ```javascript // or ESM/TypeScript import import Ajv from "ajv" // Node.js require: const Ajv = require("ajv") const ajv = new Ajv() // options can be passed, e.g. {allErrors: true} const schema = { type: "object", properties: { foo: {type: "integer"}, bar: {type: "string"} }, required: ["foo"], additionalProperties: false, } const data = { foo: 1, bar: "abc" } const validate = ajv.compile(schema) const valid = validate(data) if (!valid) console.log(validate.errors) ``` Learn how to use Ajv and see more examples in the [Guide: getting started](https://ajv.js.org/guide/getting-started.html) ## Changes history See [https://github.com/ajv-validator/ajv/releases](https://github.com/ajv-validator/ajv/releases) **Please note**: [Changes in version 8.0.0](https://github.com/ajv-validator/ajv/releases/tag/v8.0.0) [Version 7.0.0](https://github.com/ajv-validator/ajv/releases/tag/v7.0.0) [Version 6.0.0](https://github.com/ajv-validator/ajv/releases/tag/v6.0.0). ## Code of conduct Please review and follow the [Code of conduct](./CODE_OF_CONDUCT.md). Please report any unacceptable behaviour to ajv.validator@gmail.com - it will be reviewed by the project team. ## Security contact To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. Please do NOT report security vulnerabilities via GitHub issues. ## Open-source software support Ajv is a part of [Tidelift subscription](https://tidelift.com/subscription/pkg/npm-ajv?utm_source=npm-ajv&utm_medium=referral&utm_campaign=readme) - it provides a centralised support to open-source software users, in addition to the support provided by software maintainers. ## License [MIT](./LICENSE) # y18n [![Build Status][travis-image]][travis-url] [![Coverage Status][coveralls-image]][coveralls-url] [![NPM version][npm-image]][npm-url] [![js-standard-style][standard-image]][standard-url] [](https://conventionalcommits.org) The bare-bones internationalization library used by yargs. Inspired by [i18n](https://www.npmjs.com/package/i18n). ## Examples _simple string translation:_ ```js var __ = require('y18n').__ console.log(__('my awesome string %s', 'foo')) ``` output: `my awesome string foo` _using tagged template literals_ ```js var __ = require('y18n').__ var str = 'foo' console.log(__`my awesome string ${str}`) ``` output: `my awesome string foo` _pluralization support:_ ```js var __n = require('y18n').__n console.log(__n('one fish %s', '%d fishes %s', 2, 'foo')) ``` output: `2 fishes foo` ## JSON Language Files The JSON language files should be stored in a `./locales` folder. File names correspond to locales, e.g., `en.json`, `pirate.json`. When strings are observed for the first time they will be added to the JSON file corresponding to the current locale. ## Methods ### require('y18n')(config) Create an instance of y18n with the config provided, options include: * `directory`: the locale directory, default `./locales`. * `updateFiles`: should newly observed strings be updated in file, default `true`. * `locale`: what locale should be used. * `fallbackToLanguage`: should fallback to a language-only file (e.g. `en.json`) be allowed if a file matching the locale does not exist (e.g. `en_US.json`), default `true`. ### y18n.\_\_(str, arg, arg, arg) Print a localized string, `%s` will be replaced with `arg`s. This function can also be used as a tag for a template literal. You can use it like this: <code>__&#96;hello ${'world'}&#96;</code>. This will be equivalent to `__('hello %s', 'world')`. ### y18n.\_\_n(singularString, pluralString, count, arg, arg, arg) Print a localized string with appropriate pluralization. If `%d` is provided in the string, the `count` will replace this placeholder. ### y18n.setLocale(str) Set the current locale being used. ### y18n.getLocale() What locale is currently being used? ### y18n.updateLocale(obj) Update the current locale with the key value pairs in `obj`. ## License ISC [travis-url]: https://travis-ci.org/yargs/y18n [travis-image]: https://img.shields.io/travis/yargs/y18n.svg [coveralls-url]: https://coveralls.io/github/yargs/y18n [coveralls-image]: https://img.shields.io/coveralls/yargs/y18n.svg [npm-url]: https://npmjs.org/package/y18n [npm-image]: https://img.shields.io/npm/v/y18n.svg [standard-image]: https://img.shields.io/badge/code%20style-standard-brightgreen.svg [standard-url]: https://github.com/feross/standard # universal-url [![NPM Version][npm-image]][npm-url] [![Build Status][travis-image]][travis-url] [![Dependency Monitor][greenkeeper-image]][greenkeeper-url] > WHATWG [`URL`](https://developer.mozilla.org/en/docs/Web/API/URL) for Node & Browser. * For Node.js versions `>= 8`, the native implementation will be used. * For Node.js versions `< 8`, a [shim](https://npmjs.com/whatwg-url) will be used. * For web browsers without a native implementation, the same shim will be used. ## Installation [Node.js](http://nodejs.org/) `>= 6` is required. To install, type this at the command line: ```shell npm install universal-url ``` ## Usage ```js const {URL, URLSearchParams} = require('universal-url'); const url = new URL('http://domain/'); const params = new URLSearchParams('?param=value'); ``` Global shim: ```js require('universal-url').shim(); const url = new URL('http://domain/'); const params = new URLSearchParams('?param=value'); ``` ## Browserify/etc The bundled file size of this library can be large for a web browser. If this is a problem, try using [universal-url-lite](https://npmjs.com/universal-url-lite) in your build as an alias for this module. [npm-image]: https://img.shields.io/npm/v/universal-url.svg [npm-url]: https://npmjs.org/package/universal-url [travis-image]: https://img.shields.io/travis/stevenvachon/universal-url.svg [travis-url]: https://travis-ci.org/stevenvachon/universal-url [greenkeeper-image]: https://badges.greenkeeper.io/stevenvachon/universal-url.svg [greenkeeper-url]: https://greenkeeper.io/ <p align="center"> <img width="250" src="https://raw.githubusercontent.com/yargs/yargs/master/yargs-logo.png"> </p> <h1 align="center"> Yargs </h1> <p align="center"> <b >Yargs be a node.js library fer hearties tryin' ter parse optstrings</b> </p> <br>  [![NPM version][npm-image]][npm-url] [![js-standard-style][standard-image]][standard-url] [![Coverage][coverage-image]][coverage-url] [![Conventional Commits][conventional-commits-image]][conventional-commits-url] [![Slack][slack-image]][slack-url] ## Description Yargs helps you build interactive command line tools, by parsing arguments and generating an elegant user interface. It gives you: * commands and (grouped) options (`my-program.js serve --port=5000`). * a dynamically generated help menu based on your arguments: ``` mocha [spec..] Run tests with Mocha Commands mocha inspect [spec..] Run tests with Mocha [default] mocha init <path> create a client-side Mocha setup at <path> Rules & Behavior --allow-uncaught Allow uncaught errors to propagate [boolean] --async-only, -A Require all tests to use a callback (async) or return a Promise [boolean] ``` * bash-completion shortcuts for commands and options. * and [tons more](/docs/api.md). ## Installation Stable version: ```bash npm i yargs ``` Bleeding edge version with the most recent features: ```bash npm i yargs@next ``` ## Usage ### Simple Example ```javascript #!/usr/bin/env node const yargs = require('yargs/yargs') const { hideBin } = require('yargs/helpers') const argv = yargs(hideBin(process.argv)).argv if (argv.ships > 3 && argv.distance < 53.5) { console.log('Plunder more riffiwobbles!') } else { console.log('Retreat from the xupptumblers!') } ``` ```bash $ ./plunder.js --ships=4 --distance=22 Plunder more riffiwobbles! $ ./plunder.js --ships 12 --distance 98.7 Retreat from the xupptumblers! ``` ### Complex Example ```javascript #!/usr/bin/env node const yargs = require('yargs/yargs') const { hideBin } = require('yargs/helpers') yargs(hideBin(process.argv)) .command('serve [port]', 'start the server', (yargs) => { yargs .positional('port', { describe: 'port to bind on', default: 5000 }) }, (argv) => { if (argv.verbose) console.info(`start server on :${argv.port}`) serve(argv.port) }) .option('verbose', { alias: 'v', type: 'boolean', description: 'Run with verbose logging' }) .argv ``` Run the example above with `--help` to see the help for the application. ## Supported Platforms ### TypeScript yargs has type definitions at [@types/yargs][type-definitions]. ``` npm i @types/yargs --save-dev ``` See usage examples in [docs](/docs/typescript.md). ### Deno As of `v16`, `yargs` supports [Deno](https://github.com/denoland/deno): ```typescript import yargs from 'https://deno.land/x/yargs/deno.ts' import { Arguments } from 'https://deno.land/x/yargs/deno-types.ts' yargs(Deno.args) .command('download <files...>', 'download a list of files', (yargs: any) => { return yargs.positional('files', { describe: 'a list of files to do something with' }) }, (argv: Arguments) => { console.info(argv) }) .strictCommands() .demandCommand(1) .argv ``` ### ESM As of `v16`,`yargs` supports ESM imports: ```js import yargs from 'yargs' import { hideBin } from 'yargs/helpers' yargs(hideBin(process.argv)) .command('curl <url>', 'fetch the contents of the URL', () => {}, (argv) => { console.info(argv) }) .demandCommand(1) .argv ``` ### Usage in Browser See examples of using yargs in the browser in [docs](/docs/browser.md). ## Community Having problems? want to contribute? join our [community slack](http://devtoolscommunity.herokuapp.com). ## Documentation ### Table of Contents * [Yargs' API](/docs/api.md) * [Examples](/docs/examples.md) * [Parsing Tricks](/docs/tricks.md) * [Stop the Parser](/docs/tricks.md#stop) * [Negating Boolean Arguments](/docs/tricks.md#negate) * [Numbers](/docs/tricks.md#numbers) * [Arrays](/docs/tricks.md#arrays) * [Objects](/docs/tricks.md#objects) * [Quotes](/docs/tricks.md#quotes) * [Advanced Topics](/docs/advanced.md) * [Composing Your App Using Commands](/docs/advanced.md#commands) * [Building Configurable CLI Apps](/docs/advanced.md#configuration) * [Customizing Yargs' Parser](/docs/advanced.md#customizing) * [Bundling yargs](/docs/bundling.md) * [Contributing](/contributing.md) ## Supported Node.js Versions Libraries in this ecosystem make a best effort to track [Node.js' release schedule](https://nodejs.org/en/about/releases/). Here's [a post on why we think this is important](https://medium.com/the-node-js-collection/maintainers-should-consider-following-node-js-release-schedule-ab08ed4de71a). [npm-url]: https://www.npmjs.com/package/yargs [npm-image]: https://img.shields.io/npm/v/yargs.svg [standard-image]: https://img.shields.io/badge/code%20style-standard-brightgreen.svg [standard-url]: http://standardjs.com/ [conventional-commits-image]: https://img.shields.io/badge/Conventional%20Commits-1.0.0-yellow.svg [conventional-commits-url]: https://conventionalcommits.org/ [slack-image]: http://devtoolscommunity.herokuapp.com/badge.svg [slack-url]: http://devtoolscommunity.herokuapp.com [type-definitions]: https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/yargs [coverage-image]: https://img.shields.io/nycrc/yargs/yargs [coverage-url]: https://github.com/yargs/yargs/blob/master/.nycrc # which Like the unix `which` utility. Finds the first instance of a specified executable in the PATH environment variable. Does not cache the results, so `hash -r` is not needed when the PATH changes. ## USAGE ```javascript var which = require('which') // async usage which('node', function (er, resolvedPath) { // er is returned if no "node" is found on the PATH // if it is found, then the absolute path to the exec is returned }) // or promise which('node').then(resolvedPath => { ... }).catch(er => { ... not found ... }) // sync usage // throws if not found var resolved = which.sync('node') // if nothrow option is used, returns null if not found resolved = which.sync('node', {nothrow: true}) // Pass options to override the PATH and PATHEXT environment vars. which('node', { path: someOtherPath }, function (er, resolved) { if (er) throw er console.log('found at %j', resolved) }) ``` ## CLI USAGE Same as the BSD `which(1)` binary. ``` usage: which [-as] program ... ``` ## OPTIONS You may pass an options object as the second argument. - `path`: Use instead of the `PATH` environment variable. - `pathExt`: Use instead of the `PATHEXT` environment variable. - `all`: Return all matches, instead of just the first one. Note that this means the function returns an array of strings instead of a single string. # axios // helpers The modules found in `helpers/` should be generic modules that are _not_ specific to the domain logic of axios. These modules could theoretically be published to npm on their own and consumed by other modules or apps. Some examples of generic modules are things like: - Browser polyfills - Managing cookies - Parsing HTTP headers # Glob Match files using the patterns the shell uses, like stars and stuff. [](https://travis-ci.org/isaacs/node-glob/) [](https://ci.appveyor.com/project/isaacs/node-glob) [](https://coveralls.io/github/isaacs/node-glob?branch=master) This is a glob implementation in JavaScript. It uses the `minimatch` library to do its matching.  ## Usage Install with npm ``` npm i glob ``` ```javascript var glob = require("glob") // options is optional glob("**/*.js", options, function (er, files) { // files is an array of filenames. // If the `nonull` option is set, and nothing // was found, then files is ["**/*.js"] // er is an error object or null. }) ``` ## Glob Primer "Globs" are the patterns you type when you do stuff like `ls *.js` on the command line, or put `build/*` in a `.gitignore` file. Before parsing the path part patterns, braced sections are expanded into a set. Braced sections start with `{` and end with `}`, with any number of comma-delimited sections within. Braced sections may contain slash characters, so `a{/b/c,bcd}` would expand into `a/b/c` and `abcd`. The following characters have special magic meaning when used in a path portion: * `*` Matches 0 or more characters in a single path portion * `?` Matches 1 character * `[...]` Matches a range of characters, similar to a RegExp range. If the first character of the range is `!` or `^` then it matches any character not in the range. * `!(pattern|pattern|pattern)` Matches anything that does not match any of the patterns provided. * `?(pattern|pattern|pattern)` Matches zero or one occurrence of the patterns provided. * `+(pattern|pattern|pattern)` Matches one or more occurrences of the patterns provided. * `*(a|b|c)` Matches zero or more occurrences of the patterns provided * `@(pattern|pat*|pat?erN)` Matches exactly one of the patterns provided * `**` If a "globstar" is alone in a path portion, then it matches zero or more directories and subdirectories searching for matches. It does not crawl symlinked directories. ### Dots If a file or directory path portion has a `.` as the first character, then it will not match any glob pattern unless that pattern's corresponding path part also has a `.` as its first character. For example, the pattern `a/.*/c` would match the file at `a/.b/c`. However the pattern `a/*/c` would not, because `*` does not start with a dot character. You can make glob treat dots as normal characters by setting `dot:true` in the options. ### Basename Matching If you set `matchBase:true` in the options, and the pattern has no slashes in it, then it will seek for any file anywhere in the tree with a matching basename. For example, `*.js` would match `test/simple/basic.js`. ### Empty Sets If no matching files are found, then an empty array is returned. This differs from the shell, where the pattern itself is returned. For example: $ echo a*s*d*f a*s*d*f To get the bash-style behavior, set the `nonull:true` in the options. ### See Also: * `man sh` * `man bash` (Search for "Pattern Matching") * `man 3 fnmatch` * `man 5 gitignore` * [minimatch documentation](https://github.com/isaacs/minimatch) ## glob.hasMagic(pattern, [options]) Returns `true` if there are any special characters in the pattern, and `false` otherwise. Note that the options affect the results. If `noext:true` is set in the options object, then `+(a|b)` will not be considered a magic pattern. If the pattern has a brace expansion, like `a/{b/c,x/y}` then that is considered magical, unless `nobrace:true` is set in the options. ## glob(pattern, [options], cb) * `pattern` `{String}` Pattern to be matched * `options` `{Object}` * `cb` `{Function}` * `err` `{Error | null}` * `matches` `{Array<String>}` filenames found matching the pattern Perform an asynchronous glob search. ## glob.sync(pattern, [options]) * `pattern` `{String}` Pattern to be matched * `options` `{Object}` * return: `{Array<String>}` filenames found matching the pattern Perform a synchronous glob search. ## Class: glob.Glob Create a Glob object by instantiating the `glob.Glob` class. ```javascript var Glob = require("glob").Glob var mg = new Glob(pattern, options, cb) ``` It's an EventEmitter, and starts walking the filesystem to find matches immediately. ### new glob.Glob(pattern, [options], [cb]) * `pattern` `{String}` pattern to search for * `options` `{Object}` * `cb` `{Function}` Called when an error occurs, or matches are found * `err` `{Error | null}` * `matches` `{Array<String>}` filenames found matching the pattern Note that if the `sync` flag is set in the options, then matches will be immediately available on the `g.found` member. ### Properties * `minimatch` The minimatch object that the glob uses. * `options` The options object passed in. * `aborted` Boolean which is set to true when calling `abort()`. There is no way at this time to continue a glob search after aborting, but you can re-use the statCache to avoid having to duplicate syscalls. * `cache` Convenience object. Each field has the following possible values: * `false` - Path does not exist * `true` - Path exists * `'FILE'` - Path exists, and is not a directory * `'DIR'` - Path exists, and is a directory * `[file, entries, ...]` - Path exists, is a directory, and the array value is the results of `fs.readdir` * `statCache` Cache of `fs.stat` results, to prevent statting the same path multiple times. * `symlinks` A record of which paths are symbolic links, which is relevant in resolving `**` patterns. * `realpathCache` An optional object which is passed to `fs.realpath` to minimize unnecessary syscalls. It is stored on the instantiated Glob object, and may be re-used. ### Events * `end` When the matching is finished, this is emitted with all the matches found. If the `nonull` option is set, and no match was found, then the `matches` list contains the original pattern. The matches are sorted, unless the `nosort` flag is set. * `match` Every time a match is found, this is emitted with the specific thing that matched. It is not deduplicated or resolved to a realpath. * `error` Emitted when an unexpected error is encountered, or whenever any fs error occurs if `options.strict` is set. * `abort` When `abort()` is called, this event is raised. ### Methods * `pause` Temporarily stop the search * `resume` Resume the search * `abort` Stop the search forever ### Options All the options that can be passed to Minimatch can also be passed to Glob to change pattern matching behavior. Also, some have been added, or have glob-specific ramifications. All options are false by default, unless otherwise noted. All options are added to the Glob object, as well. If you are running many `glob` operations, you can pass a Glob object as the `options` argument to a subsequent operation to shortcut some `stat` and `readdir` calls. At the very least, you may pass in shared `symlinks`, `statCache`, `realpathCache`, and `cache` options, so that parallel glob operations will be sped up by sharing information about the filesystem. * `cwd` The current working directory in which to search. Defaults to `process.cwd()`. * `root` The place where patterns starting with `/` will be mounted onto. Defaults to `path.resolve(options.cwd, "/")` (`/` on Unix systems, and `C:\` or some such on Windows.) * `dot` Include `.dot` files in normal matches and `globstar` matches. Note that an explicit dot in a portion of the pattern will always match dot files. * `nomount` By default, a pattern starting with a forward-slash will be "mounted" onto the root setting, so that a valid filesystem path is returned. Set this flag to disable that behavior. * `mark` Add a `/` character to directory matches. Note that this requires additional stat calls. * `nosort` Don't sort the results. * `stat` Set to true to stat *all* results. This reduces performance somewhat, and is completely unnecessary, unless `readdir` is presumed to be an untrustworthy indicator of file existence. * `silent` When an unusual error is encountered when attempting to read a directory, a warning will be printed to stderr. Set the `silent` option to true to suppress these warnings. * `strict` When an unusual error is encountered when attempting to read a directory, the process will just continue on in search of other matches. Set the `strict` option to raise an error in these cases. * `cache` See `cache` property above. Pass in a previously generated cache object to save some fs calls. * `statCache` A cache of results of filesystem information, to prevent unnecessary stat calls. While it should not normally be necessary to set this, you may pass the statCache from one glob() call to the options object of another, if you know that the filesystem will not change between calls. (See "Race Conditions" below.) * `symlinks` A cache of known symbolic links. You may pass in a previously generated `symlinks` object to save `lstat` calls when resolving `**` matches. * `sync` DEPRECATED: use `glob.sync(pattern, opts)` instead. * `nounique` In some cases, brace-expanded patterns can result in the same file showing up multiple times in the result set. By default, this implementation prevents duplicates in the result set. Set this flag to disable that behavior. * `nonull` Set to never return an empty set, instead returning a set containing the pattern itself. This is the default in glob(3). * `debug` Set to enable debug logging in minimatch and glob. * `nobrace` Do not expand `{a,b}` and `{1..3}` brace sets. * `noglobstar` Do not match `**` against multiple filenames. (Ie, treat it as a normal `*` instead.) * `noext` Do not match `+(a|b)` "extglob" patterns. * `nocase` Perform a case-insensitive match. Note: on case-insensitive filesystems, non-magic patterns will match by default, since `stat` and `readdir` will not raise errors. * `matchBase` Perform a basename-only match if the pattern does not contain any slash characters. That is, `*.js` would be treated as equivalent to `**/*.js`, matching all js files in all directories. * `nodir` Do not match directories, only files. (Note: to match *only* directories, simply put a `/` at the end of the pattern.) * `ignore` Add a pattern or an array of glob patterns to exclude matches. Note: `ignore` patterns are *always* in `dot:true` mode, regardless of any other settings. * `follow` Follow symlinked directories when expanding `**` patterns. Note that this can result in a lot of duplicate references in the presence of cyclic links. * `realpath` Set to true to call `fs.realpath` on all of the results. In the case of a symlink that cannot be resolved, the full absolute path to the matched entry is returned (though it will usually be a broken symlink) * `absolute` Set to true to always receive absolute paths for matched files. Unlike `realpath`, this also affects the values returned in the `match` event. * `fs` File-system object with Node's `fs` API. By default, the built-in `fs` module will be used. Set to a volume provided by a library like `memfs` to avoid using the "real" file-system. ## Comparisons to other fnmatch/glob implementations While strict compliance with the existing standards is a worthwhile goal, some discrepancies exist between node-glob and other implementations, and are intentional. The double-star character `**` is supported by default, unless the `noglobstar` flag is set. This is supported in the manner of bsdglob and bash 4.3, where `**` only has special significance if it is the only thing in a path part. That is, `a/**/b` will match `a/x/y/b`, but `a/**b` will not. Note that symlinked directories are not crawled as part of a `**`, though their contents may match against subsequent portions of the pattern. This prevents infinite loops and duplicates and the like. If an escaped pattern has no matches, and the `nonull` flag is set, then glob returns the pattern as-provided, rather than interpreting the character escapes. For example, `glob.match([], "\\*a\\?")` will return `"\\*a\\?"` rather than `"*a?"`. This is akin to setting the `nullglob` option in bash, except that it does not resolve escaped pattern characters. If brace expansion is not disabled, then it is performed before any other interpretation of the glob pattern. Thus, a pattern like `+(a|{b),c)}`, which would not be valid in bash or zsh, is expanded **first** into the set of `+(a|b)` and `+(a|c)`, and those patterns are checked for validity. Since those two are valid, matching proceeds. ### Comments and Negation Previously, this module let you mark a pattern as a "comment" if it started with a `#` character, or a "negated" pattern if it started with a `!` character. These options were deprecated in version 5, and removed in version 6. To specify things that should not match, use the `ignore` option. ## Windows **Please only use forward-slashes in glob expressions.** Though windows uses either `/` or `\` as its path separator, only `/` characters are used by this glob implementation. You must use forward-slashes **only** in glob expressions. Back-slashes will always be interpreted as escape characters, not path separators. Results from absolute patterns such as `/foo/*` are mounted onto the root setting using `path.join`. On windows, this will by default result in `/foo/*` matching `C:\foo\bar.txt`. ## Race Conditions Glob searching, by its very nature, is susceptible to race conditions, since it relies on directory walking and such. As a result, it is possible that a file that exists when glob looks for it may have been deleted or modified by the time it returns the result. As part of its internal implementation, this program caches all stat and readdir calls that it makes, in order to cut down on system overhead. However, this also makes it even more susceptible to races, especially if the cache or statCache objects are reused between glob calls. Users are thus advised not to use a glob result as a guarantee of filesystem state in the face of rapid changes. For the vast majority of operations, this is never a problem. ## Glob Logo Glob's logo was created by [Tanya Brassie](http://tanyabrassie.com/). Logo files can be found [here](https://github.com/isaacs/node-glob/tree/master/logo). The logo is licensed under a [Creative Commons Attribution-ShareAlike 4.0 International License](https://creativecommons.org/licenses/by-sa/4.0/). ## Contributing Any change to behavior (including bugfixes) must come with a test. Patches that fail tests or reduce performance will be rejected. ``` # to run tests npm test # to re-generate test fixtures npm run test-regen # to benchmark against bash/zsh npm run bench # to profile javascript npm run prof ```  # Acorn A tiny, fast JavaScript parser written in JavaScript. ## Community Acorn is open source software released under an [MIT license](https://github.com/acornjs/acorn/blob/master/acorn/LICENSE). You are welcome to [report bugs](https://github.com/acornjs/acorn/issues) or create pull requests on [github](https://github.com/acornjs/acorn). For questions and discussion, please use the [Tern discussion forum](https://discuss.ternjs.net). ## Installation The easiest way to install acorn is from [`npm`](https://www.npmjs.com/): ```sh npm install acorn ``` Alternately, you can download the source and build acorn yourself: ```sh git clone https://github.com/acornjs/acorn.git cd acorn npm install ``` ## Interface **parse**`(input, options)` is the main interface to the library. The `input` parameter is a string, `options` can be undefined or an object setting some of the options listed below. The return value will be an abstract syntax tree object as specified by the [ESTree spec](https://github.com/estree/estree). ```javascript let acorn = require("acorn"); console.log(acorn.parse("1 + 1")); ``` When encountering a syntax error, the parser will raise a `SyntaxError` object with a meaningful message. The error object will have a `pos` property that indicates the string offset at which the error occurred, and a `loc` object that contains a `{line, column}` object referring to that same position. Options can be provided by passing a second argument, which should be an object containing any of these fields: - **ecmaVersion**: Indicates the ECMAScript version to parse. Must be either 3, 5, 6 (2015), 7 (2016), 8 (2017), 9 (2018), 10 (2019) or 11 (2020, partial support). This influences support for strict mode, the set of reserved words, and support for new syntax features. Default is 10. **NOTE**: Only 'stage 4' (finalized) ECMAScript features are being implemented by Acorn. Other proposed new features can be implemented through plugins. - **sourceType**: Indicate the mode the code should be parsed in. Can be either `"script"` or `"module"`. This influences global strict mode and parsing of `import` and `export` declarations. **NOTE**: If set to `"module"`, then static `import` / `export` syntax will be valid, even if `ecmaVersion` is less than 6. - **onInsertedSemicolon**: If given a callback, that callback will be called whenever a missing semicolon is inserted by the parser. The callback will be given the character offset of the point where the semicolon is inserted as argument, and if `locations` is on, also a `{line, column}` object representing this position. - **onTrailingComma**: Like `onInsertedSemicolon`, but for trailing commas. - **allowReserved**: If `false`, using a reserved word will generate an error. Defaults to `true` for `ecmaVersion` 3, `false` for higher versions. When given the value `"never"`, reserved words and keywords can also not be used as property names (as in Internet Explorer's old parser). - **allowReturnOutsideFunction**: By default, a return statement at the top level raises an error. Set this to `true` to accept such code. - **allowImportExportEverywhere**: By default, `import` and `export` declarations can only appear at a program's top level. Setting this option to `true` allows them anywhere where a statement is allowed. - **allowAwaitOutsideFunction**: By default, `await` expressions can only appear inside `async` functions. Setting this option to `true` allows to have top-level `await` expressions. They are still not allowed in non-`async` functions, though. - **allowHashBang**: When this is enabled (off by default), if the code starts with the characters `#!` (as in a shellscript), the first line will be treated as a comment. - **locations**: When `true`, each node has a `loc` object attached with `start` and `end` subobjects, each of which contains the one-based line and zero-based column numbers in `{line, column}` form. Default is `false`. - **onToken**: If a function is passed for this option, each found token will be passed in same format as tokens returned from `tokenizer().getToken()`. If array is passed, each found token is pushed to it. Note that you are not allowed to call the parser from the callback—that will corrupt its internal state. - **onComment**: If a function is passed for this option, whenever a comment is encountered the function will be called with the following parameters: - `block`: `true` if the comment is a block comment, false if it is a line comment. - `text`: The content of the comment. - `start`: Character offset of the start of the comment. - `end`: Character offset of the end of the comment. When the `locations` options is on, the `{line, column}` locations of the comment’s start and end are passed as two additional parameters. If array is passed for this option, each found comment is pushed to it as object in Esprima format: ```javascript { "type": "Line" | "Block", "value": "comment text", "start": Number, "end": Number, // If `locations` option is on: "loc": { "start": {line: Number, column: Number} "end": {line: Number, column: Number} }, // If `ranges` option is on: "range": [Number, Number] } ``` Note that you are not allowed to call the parser from the callback—that will corrupt its internal state. - **ranges**: Nodes have their start and end characters offsets recorded in `start` and `end` properties (directly on the node, rather than the `loc` object, which holds line/column data. To also add a [semi-standardized](https://bugzilla.mozilla.org/show_bug.cgi?id=745678) `range` property holding a `[start, end]` array with the same numbers, set the `ranges` option to `true`. - **program**: It is possible to parse multiple files into a single AST by passing the tree produced by parsing the first file as the `program` option in subsequent parses. This will add the toplevel forms of the parsed file to the "Program" (top) node of an existing parse tree. - **sourceFile**: When the `locations` option is `true`, you can pass this option to add a `source` attribute in every node’s `loc` object. Note that the contents of this option are not examined or processed in any way; you are free to use whatever format you choose. - **directSourceFile**: Like `sourceFile`, but a `sourceFile` property will be added (regardless of the `location` option) directly to the nodes, rather than the `loc` object. - **preserveParens**: If this option is `true`, parenthesized expressions are represented by (non-standard) `ParenthesizedExpression` nodes that have a single `expression` property containing the expression inside parentheses. **parseExpressionAt**`(input, offset, options)` will parse a single expression in a string, and return its AST. It will not complain if there is more of the string left after the expression. **tokenizer**`(input, options)` returns an object with a `getToken` method that can be called repeatedly to get the next token, a `{start, end, type, value}` object (with added `loc` property when the `locations` option is enabled and `range` property when the `ranges` option is enabled). When the token's type is `tokTypes.eof`, you should stop calling the method, since it will keep returning that same token forever. In ES6 environment, returned result can be used as any other protocol-compliant iterable: ```javascript for (let token of acorn.tokenizer(str)) { // iterate over the tokens } // transform code to array of tokens: var tokens = [...acorn.tokenizer(str)]; ``` **tokTypes** holds an object mapping names to the token type objects that end up in the `type` properties of tokens. **getLineInfo**`(input, offset)` can be used to get a `{line, column}` object for a given program string and offset. ### The `Parser` class Instances of the **`Parser`** class contain all the state and logic that drives a parse. It has static methods `parse`, `parseExpressionAt`, and `tokenizer` that match the top-level functions by the same name. When extending the parser with plugins, you need to call these methods on the extended version of the class. To extend a parser with plugins, you can use its static `extend` method. ```javascript var acorn = require("acorn"); var jsx = require("acorn-jsx"); var JSXParser = acorn.Parser.extend(jsx()); JSXParser.parse("foo(<bar/>)"); ``` The `extend` method takes any number of plugin values, and returns a new `Parser` class that includes the extra parser logic provided by the plugins. ## Command line interface The `bin/acorn` utility can be used to parse a file from the command line. It accepts as arguments its input file and the following options: - `--ecma3|--ecma5|--ecma6|--ecma7|--ecma8|--ecma9|--ecma10`: Sets the ECMAScript version to parse. Default is version 9. - `--module`: Sets the parsing mode to `"module"`. Is set to `"script"` otherwise. - `--locations`: Attaches a "loc" object to each node with "start" and "end" subobjects, each of which contains the one-based line and zero-based column numbers in `{line, column}` form. - `--allow-hash-bang`: If the code starts with the characters #! (as in a shellscript), the first line will be treated as a comment. - `--compact`: No whitespace is used in the AST output. - `--silent`: Do not output the AST, just return the exit status. - `--help`: Print the usage information and quit. The utility spits out the syntax tree as JSON data. ## Existing plugins - [`acorn-jsx`](https://github.com/RReverser/acorn-jsx): Parse [Facebook JSX syntax extensions](https://github.com/facebook/jsx) Plugins for ECMAScript proposals: - [`acorn-stage3`](https://github.com/acornjs/acorn-stage3): Parse most stage 3 proposals, bundling: - [`acorn-class-fields`](https://github.com/acornjs/acorn-class-fields): Parse [class fields proposal](https://github.com/tc39/proposal-class-fields) - [`acorn-import-meta`](https://github.com/acornjs/acorn-import-meta): Parse [import.meta proposal](https://github.com/tc39/proposal-import-meta) - [`acorn-private-methods`](https://github.com/acornjs/acorn-private-methods): parse [private methods, getters and setters proposal](https://github.com/tc39/proposal-private-methods)n # regexpp [](https://www.npmjs.com/package/regexpp) [](http://www.npmtrends.com/regexpp) [](https://github.com/mysticatea/regexpp/actions) [](https://codecov.io/gh/mysticatea/regexpp) [](https://david-dm.org/mysticatea/regexpp) A regular expression parser for ECMAScript. ## 💿 Installation ```bash $ npm install regexpp ``` - require Node.js 8 or newer. ## 📖 Usage ```ts import { AST, RegExpParser, RegExpValidator, RegExpVisitor, parseRegExpLiteral, validateRegExpLiteral, visitRegExpAST } from "regexpp" ``` ### parseRegExpLiteral(source, options?) Parse a given regular expression literal then make AST object. This is equivalent to `new RegExpParser(options).parseLiteral(source)`. - **Parameters:** - `source` (`string | RegExp`) The source code to parse. - `options?` ([`RegExpParser.Options`]) The options to parse. - **Return:** - The AST of the regular expression. ### validateRegExpLiteral(source, options?) Validate a given regular expression literal. This is equivalent to `new RegExpValidator(options).validateLiteral(source)`. - **Parameters:** - `source` (`string`) The source code to validate. - `options?` ([`RegExpValidator.Options`]) The options to validate. ### visitRegExpAST(ast, handlers) Visit each node of a given AST. This is equivalent to `new RegExpVisitor(handlers).visit(ast)`. - **Parameters:** - `ast` ([`AST.Node`]) The AST to visit. - `handlers` ([`RegExpVisitor.Handlers`]) The callbacks. ### RegExpParser #### new RegExpParser(options?) - **Parameters:** - `options?` ([`RegExpParser.Options`]) The options to parse. #### parser.parseLiteral(source, start?, end?) Parse a regular expression literal. - **Parameters:** - `source` (`string`) The source code to parse. E.g. `"/abc/g"`. - `start?` (`number`) The start index in the source code. Default is `0`. - `end?` (`number`) The end index in the source code. Default is `source.length`. - **Return:** - The AST of the regular expression. #### parser.parsePattern(source, start?, end?, uFlag?) Parse a regular expression pattern. - **Parameters:** - `source` (`string`) The source code to parse. E.g. `"abc"`. - `start?` (`number`) The start index in the source code. Default is `0`. - `end?` (`number`) The end index in the source code. Default is `source.length`. - `uFlag?` (`boolean`) The flag to enable Unicode mode. - **Return:** - The AST of the regular expression pattern. #### parser.parseFlags(source, start?, end?) Parse a regular expression flags. - **Parameters:** - `source` (`string`) The source code to parse. E.g. `"gim"`. - `start?` (`number`) The start index in the source code. Default is `0`. - `end?` (`number`) The end index in the source code. Default is `source.length`. - **Return:** - The AST of the regular expression flags. ### RegExpValidator #### new RegExpValidator(options) - **Parameters:** - `options` ([`RegExpValidator.Options`]) The options to validate. #### validator.validateLiteral(source, start, end) Validate a regular expression literal. - **Parameters:** - `source` (`string`) The source code to validate. - `start?` (`number`) The start index in the source code. Default is `0`. - `end?` (`number`) The end index in the source code. Default is `source.length`. #### validator.validatePattern(source, start, end, uFlag) Validate a regular expression pattern. - **Parameters:** - `source` (`string`) The source code to validate. - `start?` (`number`) The start index in the source code. Default is `0`. - `end?` (`number`) The end index in the source code. Default is `source.length`. - `uFlag?` (`boolean`) The flag to enable Unicode mode. #### validator.validateFlags(source, start, end) Validate a regular expression flags. - **Parameters:** - `source` (`string`) The source code to validate. - `start?` (`number`) The start index in the source code. Default is `0`. - `end?` (`number`) The end index in the source code. Default is `source.length`. ### RegExpVisitor #### new RegExpVisitor(handlers) - **Parameters:** - `handlers` ([`RegExpVisitor.Handlers`]) The callbacks. #### visitor.visit(ast) Validate a regular expression literal. - **Parameters:** - `ast` ([`AST.Node`]) The AST to visit. ## 📰 Changelog - [GitHub Releases](https://github.com/mysticatea/regexpp/releases) ## 🍻 Contributing Welcome contributing! Please use GitHub's Issues/PRs. ### Development Tools - `npm test` runs tests and measures coverage. - `npm run build` compiles TypeScript source code to `index.js`, `index.js.map`, and `index.d.ts`. - `npm run clean` removes the temporary files which are created by `npm test` and `npm run build`. - `npm run lint` runs ESLint. - `npm run update:test` updates test fixtures. - `npm run update:ids` updates `src/unicode/ids.ts`. - `npm run watch` runs tests with `--watch` option. [`AST.Node`]: src/ast.ts#L4 [`RegExpParser.Options`]: src/parser.ts#L539 [`RegExpValidator.Options`]: src/validator.ts#L127 [`RegExpVisitor.Handlers`]: src/visitor.ts#L204 [Build]: http://img.shields.io/travis/litejs/natural-compare-lite.png [Coverage]: http://img.shields.io/coveralls/litejs/natural-compare-lite.png [1]: https://travis-ci.org/litejs/natural-compare-lite [2]: https://coveralls.io/r/litejs/natural-compare-lite [npm package]: https://npmjs.org/package/natural-compare-lite [GitHub repo]: https://github.com/litejs/natural-compare-lite @version 1.4.0 @date 2015-10-26 @stability 3 - Stable Natural Compare &ndash; [![Build][]][1] [![Coverage][]][2] =============== Compare strings containing a mix of letters and numbers in the way a human being would in sort order. This is described as a "natural ordering". ```text Standard sorting: Natural order sorting: img1.png img1.png img10.png img2.png img12.png img10.png img2.png img12.png ``` String.naturalCompare returns a number indicating whether a reference string comes before or after or is the same as the given string in sort order. Use it with builtin sort() function. ### Installation - In browser ```html <script src=min.natural-compare.js></script> ``` - In node.js: `npm install natural-compare-lite` ```javascript require("natural-compare-lite") ``` ### Usage ```javascript // Simple case sensitive example var a = ["z1.doc", "z10.doc", "z17.doc", "z2.doc", "z23.doc", "z3.doc"]; a.sort(String.naturalCompare); // ["z1.doc", "z2.doc", "z3.doc", "z10.doc", "z17.doc", "z23.doc"] // Use wrapper function for case insensitivity a.sort(function(a, b){ return String.naturalCompare(a.toLowerCase(), b.toLowerCase()); }) // In most cases we want to sort an array of objects var a = [ {"street":"350 5th Ave", "room":"A-1021"} , {"street":"350 5th Ave", "room":"A-21046-b"} ]; // sort by street, then by room a.sort(function(a, b){ return String.naturalCompare(a.street, b.street) || String.naturalCompare(a.room, b.room); }) // When text transformation is needed (eg toLowerCase()), // it is best for performance to keep // transformed key in that object. // There are no need to do text transformation // on each comparision when sorting. var a = [ {"make":"Audi", "model":"A6"} , {"make":"Kia", "model":"Rio"} ]; // sort by make, then by model a.map(function(car){ car.sort_key = (car.make + " " + car.model).toLowerCase(); }) a.sort(function(a, b){ return String.naturalCompare(a.sort_key, b.sort_key); }) ``` - Works well with dates in ISO format eg "Rev 2012-07-26.doc". ### Custom alphabet It is possible to configure a custom alphabet to achieve a desired order. ```javascript // Estonian alphabet String.alphabet = "ABDEFGHIJKLMNOPRSŠZŽTUVÕÄÖÜXYabdefghijklmnoprsšzžtuvõäöüxy" ["t", "z", "x", "õ"].sort(String.naturalCompare) // ["z", "t", "õ", "x"] // Russian alphabet String.alphabet = "АБВГДЕЁЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдеёжзийклмнопрстуфхцчшщъыьэюя" ["Ё", "А", "Б"].sort(String.naturalCompare) // ["А", "Б", "Ё"] ``` External links -------------- - [GitHub repo][https://github.com/litejs/natural-compare-lite] - [jsperf test](http://jsperf.com/natural-sort-2/12) Licence ------- Copyright (c) 2012-2015 Lauri Rooden &lt;lauri@rooden.ee&gt; [The MIT License](http://lauri.rooden.ee/mit-license.txt) # file-entry-cache > Super simple cache for file metadata, useful for process that work o a given series of files > and that only need to repeat the job on the changed ones since the previous run of the process — Edit [](https://npmjs.org/package/file-entry-cache) [](https://travis-ci.org/royriojas/file-entry-cache) ## install ```bash npm i --save file-entry-cache ``` ## Usage The module exposes two functions `create` and `createFromFile`. ## `create(cacheName, [directory, useCheckSum])` - **cacheName**: the name of the cache to be created - **directory**: Optional the directory to load the cache from - **usecheckSum**: Whether to use md5 checksum to verify if file changed. If false the default will be to use the mtime and size of the file. ## `createFromFile(pathToCache, [useCheckSum])` - **pathToCache**: the path to the cache file (this combines the cache name and directory) - **useCheckSum**: Whether to use md5 checksum to verify if file changed. If false the default will be to use the mtime and size of the file. ```js // loads the cache, if one does not exists for the given // Id a new one will be prepared to be created var fileEntryCache = require('file-entry-cache'); var cache = fileEntryCache.create('testCache'); var files = expand('../fixtures/*.txt'); // the first time this method is called, will return all the files var oFiles = cache.getUpdatedFiles(files); // this will persist this to disk checking each file stats and // updating the meta attributes `size` and `mtime`. // custom fields could also be added to the meta object and will be persisted // in order to retrieve them later cache.reconcile(); // use this if you want the non visited file entries to be kept in the cache // for more than one execution // // cache.reconcile( true /* noPrune */) // on a second run var cache2 = fileEntryCache.create('testCache'); // will return now only the files that were modified or none // if no files were modified previous to the execution of this function var oFiles = cache.getUpdatedFiles(files); // if you want to prevent a file from being considered non modified // something useful if a file failed some sort of validation // you can then remove the entry from the cache doing cache.removeEntry('path/to/file'); // path to file should be the same path of the file received on `getUpdatedFiles` // that will effectively make the file to appear again as modified until the validation is passed. In that // case you should not remove it from the cache // if you need all the files, so you can determine what to do with the changed ones // you can call var oFiles = cache.normalizeEntries(files); // oFiles will be an array of objects like the following entry = { key: 'some/name/file', the path to the file changed: true, // if the file was changed since previous run meta: { size: 3242, // the size of the file mtime: 231231231, // the modification time of the file data: {} // some extra field stored for this file (useful to save the result of a transformation on the file } } ``` ## Motivation for this module I needed a super simple and dumb **in-memory cache** with optional disk persistence (write-back cache) in order to make a script that will beautify files with `esformatter` to execute only on the files that were changed since the last run. In doing so the process of beautifying files was reduced from several seconds to a small fraction of a second. This module uses [flat-cache](https://www.npmjs.com/package/flat-cache) a super simple `key/value` cache storage with optional file persistance. The main idea is to read the files when the task begins, apply the transforms required, and if the process succeed, then store the new state of the files. The next time this module request for `getChangedFiles` will return only the files that were modified. Making the process to end faster. This module could also be used by processes that modify the files applying a transform, in that case the result of the transform could be stored in the `meta` field, of the entries. Anything added to the meta field will be persisted. Those processes won't need to call `getChangedFiles` they will instead call `normalizeEntries` that will return the entries with a `changed` field that can be used to determine if the file was changed or not. If it was not changed the transformed stored data could be used instead of actually applying the transformation, saving time in case of only a few files changed. In the worst case scenario all the files will be processed. In the best case scenario only a few of them will be processed. ## Important notes - The values set on the meta attribute of the entries should be `stringify-able` ones if possible, flat-cache uses `circular-json` to try to persist circular structures, but this should be considered experimental. The best results are always obtained with non circular values - All the changes to the cache state are done to memory first and only persisted after reconcile. ## License MIT # binary-install Install .tar.gz binary applications via npm ## Usage This library provides a single class `Binary` that takes a download url and some optional arguments. You **must** provide either `name` or `installDirectory` when creating your `Binary`. | option | decription | | ---------------- | --------------------------------------------- | | name | The name of your binary | | installDirectory | A path to the directory to install the binary | If an `installDirectory` is not provided, the binary will be installed at your OS specific config directory. On MacOS it defaults to `~/Library/Preferences/${name}-nodejs` After your `Binary` has been created, you can run `.install()` to install the binary, and `.run()` to run it. ### Example This is meant to be used as a library - create your `Binary` with your desired options, then call `.install()` in the `postinstall` of your `package.json`, `.run()` in the `bin` section of your `package.json`, and `.uninstall()` in the `preuninstall` section of your `package.json`. See [this example project](/example) to see how to create an npm package that installs and runs a binary using the Github releases API. ## Aplicatie de votare bazat pe blockchain NEAR Smart-contractul este scris in AssemblyScript si este compilat in WebAssembly. In mediul de development este creat automat un cont de test in [reteaua de test](https://rpc.testnet.near.org), iar deploymentul este facut automat: ```shell yarn dev ``` Front-end-ul este scris in React. Dependintele pentru front-end se instaleaza din directorul `block-voting` cu comanda: ```shell yarn install ``` Dependintele pentru contract sunt instalate separat din directorul `block-voting/contract` cu aceeasi comanda. Proiectul este inspirat ***puternic*** de tutorialul [acesta](https://www.youtube.com/watch?v=sm8w9tDnMZc). --- ### Detaliile blockchainului Codul pentru blockchain este gasit in fisierul contract/assembly/index.ts Structura acestui fisier poate fi descompusa in 3 zone: * declararea variabilelor: prezenta la inceputul fisierului, sunt declarate 5 dictionare, pentru primele 4 cheia reprezinte un singur sondaj, iar valoare, in functie de variabila contine diferite date referitoare la acel sondaj (candidati, numar de voturi a fiecaruia, userii care au votat etc.). Mai exista si variabila PromptArray care contine toate sondajele. Aceasta este de asemenea un dictionar deoarece este mai usor de lucrat in acest mod. Toate sondajele sunt gasite la cheia "allarrays" * metodele de tip view: sunt metode care nu schimba variabilele din blockchain, acestea pot doar sa citeasca din ele. Aici se gasesc metode precum verificarea daca un utilizator a votat, sau metode de get pentru variabile blockchainului * metodele de tip change: sunt metode care altereaza variabilele, aici se pot gasi metode precum creearea unui nou sondaj, adaugarea de utilizatori, votarea unui anumit utilizator. # ShellJS - Unix shell commands for Node.js [](https://travis-ci.org/shelljs/shelljs) [](https://ci.appveyor.com/project/shelljs/shelljs/branch/master) [](https://codecov.io/gh/shelljs/shelljs) [](https://www.npmjs.com/package/shelljs) [](https://www.npmjs.com/package/shelljs) ShellJS is a portable **(Windows/Linux/OS X)** implementation of Unix shell commands on top of the Node.js API. You can use it to eliminate your shell script's dependency on Unix while still keeping its familiar and powerful commands. You can also install it globally so you can run it from outside Node projects - say goodbye to those gnarly Bash scripts! ShellJS is proudly tested on every node release since `v4`! The project is [unit-tested](http://travis-ci.org/shelljs/shelljs) and battle-tested in projects like: + [Firebug](http://getfirebug.com/) - Firefox's infamous debugger + [JSHint](http://jshint.com) & [ESLint](http://eslint.org/) - popular JavaScript linters + [Zepto](http://zeptojs.com) - jQuery-compatible JavaScript library for modern browsers + [Yeoman](http://yeoman.io/) - Web application stack and development tool + [Deployd.com](http://deployd.com) - Open source PaaS for quick API backend generation + And [many more](https://npmjs.org/browse/depended/shelljs). If you have feedback, suggestions, or need help, feel free to post in our [issue tracker](https://github.com/shelljs/shelljs/issues). Think ShellJS is cool? Check out some related projects in our [Wiki page](https://github.com/shelljs/shelljs/wiki)! Upgrading from an older version? Check out our [breaking changes](https://github.com/shelljs/shelljs/wiki/Breaking-Changes) page to see what changes to watch out for while upgrading. ## Command line use If you just want cross platform UNIX commands, checkout our new project [shelljs/shx](https://github.com/shelljs/shx), a utility to expose `shelljs` to the command line. For example: ``` $ shx mkdir -p foo $ shx touch foo/bar.txt $ shx rm -rf foo ``` ## Plugin API ShellJS now supports third-party plugins! You can learn more about using plugins and writing your own ShellJS commands in [the wiki](https://github.com/shelljs/shelljs/wiki/Using-ShellJS-Plugins). ## A quick note about the docs For documentation on all the latest features, check out our [README](https://github.com/shelljs/shelljs). To read docs that are consistent with the latest release, check out [the npm page](https://www.npmjs.com/package/shelljs) or [shelljs.org](http://documentup.com/shelljs/shelljs). ## Installing Via npm: ```bash $ npm install [-g] shelljs ``` ## Examples ```javascript var shell = require('shelljs'); if (!shell.which('git')) { shell.echo('Sorry, this script requires git'); shell.exit(1); } // Copy files to release dir shell.rm('-rf', 'out/Release'); shell.cp('-R', 'stuff/', 'out/Release'); // Replace macros in each .js file shell.cd('lib'); shell.ls('*.js').forEach(function (file) { shell.sed('-i', 'BUILD_VERSION', 'v0.1.2', file); shell.sed('-i', /^.*REMOVE_THIS_LINE.*$/, '', file); shell.sed('-i', /.*REPLACE_LINE_WITH_MACRO.*\n/, shell.cat('macro.js'), file); }); shell.cd('..'); // Run external tool synchronously if (shell.exec('git commit -am "Auto-commit"').code !== 0) { shell.echo('Error: Git commit failed'); shell.exit(1); } ``` ## Exclude options If you need to pass a parameter that looks like an option, you can do so like: ```js shell.grep('--', '-v', 'path/to/file'); // Search for "-v", no grep options shell.cp('-R', '-dir', 'outdir'); // If already using an option, you're done ``` ## Global vs. Local We no longer recommend using a global-import for ShellJS (i.e. `require('shelljs/global')`). While still supported for convenience, this pollutes the global namespace, and should therefore only be used with caution. Instead, we recommend a local import (standard for npm packages): ```javascript var shell = require('shelljs'); shell.echo('hello world'); ``` <!-- DO NOT MODIFY BEYOND THIS POINT - IT'S AUTOMATICALLY GENERATED --> ## Command reference All commands run synchronously, unless otherwise stated. All commands accept standard bash globbing characters (`*`, `?`, etc.), compatible with the [node `glob` module](https://github.com/isaacs/node-glob). For less-commonly used commands and features, please check out our [wiki page](https://github.com/shelljs/shelljs/wiki). ### cat([options,] file [, file ...]) ### cat([options,] file_array) Available options: + `-n`: number all output lines Examples: ```javascript var str = cat('file*.txt'); var str = cat('file1', 'file2'); var str = cat(['file1', 'file2']); // same as above ``` Returns a string containing the given file, or a concatenated string containing the files if more than one file is given (a new line character is introduced between each file). ### cd([dir]) Changes to directory `dir` for the duration of the script. Changes to home directory if no argument is supplied. ### chmod([options,] octal_mode || octal_string, file) ### chmod([options,] symbolic_mode, file) Available options: + `-v`: output a diagnostic for every file processed + `-c`: like verbose, but report only when a change is made + `-R`: change files and directories recursively Examples: ```javascript chmod(755, '/Users/brandon'); chmod('755', '/Users/brandon'); // same as above chmod('u+x', '/Users/brandon'); chmod('-R', 'a-w', '/Users/brandon'); ``` Alters the permissions of a file or directory by either specifying the absolute permissions in octal form or expressing the changes in symbols. This command tries to mimic the POSIX behavior as much as possible. Notable exceptions: + In symbolic modes, `a-r` and `-r` are identical. No consideration is given to the `umask`. + There is no "quiet" option, since default behavior is to run silent. ### cp([options,] source [, source ...], dest) ### cp([options,] source_array, dest) Available options: + `-f`: force (default behavior) + `-n`: no-clobber + `-u`: only copy if `source` is newer than `dest` + `-r`, `-R`: recursive + `-L`: follow symlinks + `-P`: don't follow symlinks Examples: ```javascript cp('file1', 'dir1'); cp('-R', 'path/to/dir/', '~/newCopy/'); cp('-Rf', '/tmp/*', '/usr/local/*', '/home/tmp'); cp('-Rf', ['/tmp/*', '/usr/local/*'], '/home/tmp'); // same as above ``` Copies files. ### pushd([options,] [dir | '-N' | '+N']) Available options: + `-n`: Suppresses the normal change of directory when adding directories to the stack, so that only the stack is manipulated. + `-q`: Supresses output to the console. Arguments: + `dir`: Sets the current working directory to the top of the stack, then executes the equivalent of `cd dir`. + `+N`: Brings the Nth directory (counting from the left of the list printed by dirs, starting with zero) to the top of the list by rotating the stack. + `-N`: Brings the Nth directory (counting from the right of the list printed by dirs, starting with zero) to the top of the list by rotating the stack. Examples: ```javascript // process.cwd() === '/usr' pushd('/etc'); // Returns /etc /usr pushd('+1'); // Returns /usr /etc ``` Save the current directory on the top of the directory stack and then `cd` to `dir`. With no arguments, `pushd` exchanges the top two directories. Returns an array of paths in the stack. ### popd([options,] ['-N' | '+N']) Available options: + `-n`: Suppress the normal directory change when removing directories from the stack, so that only the stack is manipulated. + `-q`: Supresses output to the console. Arguments: + `+N`: Removes the Nth directory (counting from the left of the list printed by dirs), starting with zero. + `-N`: Removes the Nth directory (counting from the right of the list printed by dirs), starting with zero. Examples: ```javascript echo(process.cwd()); // '/usr' pushd('/etc'); // '/etc /usr' echo(process.cwd()); // '/etc' popd(); // '/usr' echo(process.cwd()); // '/usr' ``` When no arguments are given, `popd` removes the top directory from the stack and performs a `cd` to the new top directory. The elements are numbered from 0, starting at the first directory listed with dirs (i.e., `popd` is equivalent to `popd +0`). Returns an array of paths in the stack. ### dirs([options | '+N' | '-N']) Available options: + `-c`: Clears the directory stack by deleting all of the elements. + `-q`: Supresses output to the console. Arguments: + `+N`: Displays the Nth directory (counting from the left of the list printed by dirs when invoked without options), starting with zero. + `-N`: Displays the Nth directory (counting from the right of the list printed by dirs when invoked without options), starting with zero. Display the list of currently remembered directories. Returns an array of paths in the stack, or a single path if `+N` or `-N` was specified. See also: `pushd`, `popd` ### echo([options,] string [, string ...]) Available options: + `-e`: interpret backslash escapes (default) + `-n`: remove trailing newline from output Examples: ```javascript echo('hello world'); var str = echo('hello world'); echo('-n', 'no newline at end'); ``` Prints `string` to stdout, and returns string with additional utility methods like `.to()`. ### exec(command [, options] [, callback]) Available options: + `async`: Asynchronous execution. If a callback is provided, it will be set to `true`, regardless of the passed value (default: `false`). + `silent`: Do not echo program output to console (default: `false`). + `encoding`: Character encoding to use. Affects the values returned to stdout and stderr, and what is written to stdout and stderr when not in silent mode (default: `'utf8'`). + and any option available to Node.js's [`child_process.exec()`](https://nodejs.org/api/child_process.html#child_process_child_process_exec_command_options_callback) Examples: ```javascript var version = exec('node --version', {silent:true}).stdout; var child = exec('some_long_running_process', {async:true}); child.stdout.on('data', function(data) { /* ... do something with data ... */ }); exec('some_long_running_process', function(code, stdout, stderr) { console.log('Exit code:', code); console.log('Program output:', stdout); console.log('Program stderr:', stderr); }); ``` Executes the given `command` _synchronously_, unless otherwise specified. When in synchronous mode, this returns a `ShellString` (compatible with ShellJS v0.6.x, which returns an object of the form `{ code:..., stdout:... , stderr:... }`). Otherwise, this returns the child process object, and the `callback` receives the arguments `(code, stdout, stderr)`. Not seeing the behavior you want? `exec()` runs everything through `sh` by default (or `cmd.exe` on Windows), which differs from `bash`. If you need bash-specific behavior, try out the `{shell: 'path/to/bash'}` option. ### find(path [, path ...]) ### find(path_array) Examples: ```javascript find('src', 'lib'); find(['src', 'lib']); // same as above find('.').filter(function(file) { return file.match(/\.js$/); }); ``` Returns array of all files (however deep) in the given paths. The main difference from `ls('-R', path)` is that the resulting file names include the base directories (e.g., `lib/resources/file1` instead of just `file1`). ### grep([options,] regex_filter, file [, file ...]) ### grep([options,] regex_filter, file_array) Available options: + `-v`: Invert `regex_filter` (only print non-matching lines). + `-l`: Print only filenames of matching files. + `-i`: Ignore case. Examples: ```javascript grep('-v', 'GLOBAL_VARIABLE', '*.js'); grep('GLOBAL_VARIABLE', '*.js'); ``` Reads input string from given files and returns a string containing all lines of the file that match the given `regex_filter`. ### head([{'-n': \<num\>},] file [, file ...]) ### head([{'-n': \<num\>},] file_array) Available options: + `-n <num>`: Show the first `<num>` lines of the files Examples: ```javascript var str = head({'-n': 1}, 'file*.txt'); var str = head('file1', 'file2'); var str = head(['file1', 'file2']); // same as above ``` Read the start of a file. ### ln([options,] source, dest) Available options: + `-s`: symlink + `-f`: force Examples: ```javascript ln('file', 'newlink'); ln('-sf', 'file', 'existing'); ``` Links `source` to `dest`. Use `-f` to force the link, should `dest` already exist. ### ls([options,] [path, ...]) ### ls([options,] path_array) Available options: + `-R`: recursive + `-A`: all files (include files beginning with `.`, except for `.` and `..`) + `-L`: follow symlinks + `-d`: list directories themselves, not their contents + `-l`: list objects representing each file, each with fields containing `ls -l` output fields. See [`fs.Stats`](https://nodejs.org/api/fs.html#fs_class_fs_stats) for more info Examples: ```javascript ls('projs/*.js'); ls('-R', '/users/me', '/tmp'); ls('-R', ['/users/me', '/tmp']); // same as above ls('-l', 'file.txt'); // { name: 'file.txt', mode: 33188, nlink: 1, ...} ``` Returns array of files in the given `path`, or files in the current directory if no `path` is provided. ### mkdir([options,] dir [, dir ...]) ### mkdir([options,] dir_array) Available options: + `-p`: full path (and create intermediate directories, if necessary) Examples: ```javascript mkdir('-p', '/tmp/a/b/c/d', '/tmp/e/f/g'); mkdir('-p', ['/tmp/a/b/c/d', '/tmp/e/f/g']); // same as above ``` Creates directories. ### mv([options ,] source [, source ...], dest') ### mv([options ,] source_array, dest') Available options: + `-f`: force (default behavior) + `-n`: no-clobber Examples: ```javascript mv('-n', 'file', 'dir/'); mv('file1', 'file2', 'dir/'); mv(['file1', 'file2'], 'dir/'); // same as above ``` Moves `source` file(s) to `dest`. ### pwd() Returns the current directory. ### rm([options,] file [, file ...]) ### rm([options,] file_array) Available options: + `-f`: force + `-r, -R`: recursive Examples: ```javascript rm('-rf', '/tmp/*'); rm('some_file.txt', 'another_file.txt'); rm(['some_file.txt', 'another_file.txt']); // same as above ``` Removes files. ### sed([options,] search_regex, replacement, file [, file ...]) ### sed([options,] search_regex, replacement, file_array) Available options: + `-i`: Replace contents of `file` in-place. _Note that no backups will be created!_ Examples: ```javascript sed('-i', 'PROGRAM_VERSION', 'v0.1.3', 'source.js'); sed(/.*DELETE_THIS_LINE.*\n/, '', 'source.js'); ``` Reads an input string from `file`s, and performs a JavaScript `replace()` on the input using the given `search_regex` and `replacement` string or function. Returns the new string after replacement. Note: Like unix `sed`, ShellJS `sed` supports capture groups. Capture groups are specified using the `$n` syntax: ```javascript sed(/(\w+)\s(\w+)/, '$2, $1', 'file.txt'); ``` ### set(options) Available options: + `+/-e`: exit upon error (`config.fatal`) + `+/-v`: verbose: show all commands (`config.verbose`) + `+/-f`: disable filename expansion (globbing) Examples: ```javascript set('-e'); // exit upon first error set('+e'); // this undoes a "set('-e')" ``` Sets global configuration variables. ### sort([options,] file [, file ...]) ### sort([options,] file_array) Available options: + `-r`: Reverse the results + `-n`: Compare according to numerical value Examples: ```javascript sort('foo.txt', 'bar.txt'); sort('-r', 'foo.txt'); ``` Return the contents of the `file`s, sorted line-by-line. Sorting multiple files mixes their content (just as unix `sort` does). ### tail([{'-n': \<num\>},] file [, file ...]) ### tail([{'-n': \<num\>},] file_array) Available options: + `-n <num>`: Show the last `<num>` lines of `file`s Examples: ```javascript var str = tail({'-n': 1}, 'file*.txt'); var str = tail('file1', 'file2'); var str = tail(['file1', 'file2']); // same as above ``` Read the end of a `file`. ### tempdir() Examples: ```javascript var tmp = tempdir(); // "/tmp" for most *nix platforms ``` Searches and returns string containing a writeable, platform-dependent temporary directory. Follows Python's [tempfile algorithm](http://docs.python.org/library/tempfile.html#tempfile.tempdir). ### test(expression) Available expression primaries: + `'-b', 'path'`: true if path is a block device + `'-c', 'path'`: true if path is a character device + `'-d', 'path'`: true if path is a directory + `'-e', 'path'`: true if path exists + `'-f', 'path'`: true if path is a regular file + `'-L', 'path'`: true if path is a symbolic link + `'-p', 'path'`: true if path is a pipe (FIFO) + `'-S', 'path'`: true if path is a socket Examples: ```javascript if (test('-d', path)) { /* do something with dir */ }; if (!test('-f', path)) continue; // skip if it's a regular file ``` Evaluates `expression` using the available primaries and returns corresponding value. ### ShellString.prototype.to(file) Examples: ```javascript cat('input.txt').to('output.txt'); ``` Analogous to the redirection operator `>` in Unix, but works with `ShellStrings` (such as those returned by `cat`, `grep`, etc.). _Like Unix redirections, `to()` will overwrite any existing file!_ ### ShellString.prototype.toEnd(file) Examples: ```javascript cat('input.txt').toEnd('output.txt'); ``` Analogous to the redirect-and-append operator `>>` in Unix, but works with `ShellStrings` (such as those returned by `cat`, `grep`, etc.). ### touch([options,] file [, file ...]) ### touch([options,] file_array) Available options: + `-a`: Change only the access time + `-c`: Do not create any files + `-m`: Change only the modification time + `-d DATE`: Parse `DATE` and use it instead of current time + `-r FILE`: Use `FILE`'s times instead of current time Examples: ```javascript touch('source.js'); touch('-c', '/path/to/some/dir/source.js'); touch({ '-r': FILE }, '/path/to/some/dir/source.js'); ``` Update the access and modification times of each `FILE` to the current time. A `FILE` argument that does not exist is created empty, unless `-c` is supplied. This is a partial implementation of [`touch(1)`](http://linux.die.net/man/1/touch). ### uniq([options,] [input, [output]]) Available options: + `-i`: Ignore case while comparing + `-c`: Prefix lines by the number of occurrences + `-d`: Only print duplicate lines, one for each group of identical lines Examples: ```javascript uniq('foo.txt'); uniq('-i', 'foo.txt'); uniq('-cd', 'foo.txt', 'bar.txt'); ``` Filter adjacent matching lines from `input`. ### which(command) Examples: ```javascript var nodeExec = which('node'); ``` Searches for `command` in the system's `PATH`. On Windows, this uses the `PATHEXT` variable to append the extension if it's not already executable. Returns string containing the absolute path to `command`. ### exit(code) Exits the current process with the given exit `code`. ### error() Tests if error occurred in the last command. Returns a truthy value if an error returned, or a falsy value otherwise. **Note**: do not rely on the return value to be an error message. If you need the last error message, use the `.stderr` attribute from the last command's return value instead. ### ShellString(str) Examples: ```javascript var foo = ShellString('hello world'); ``` Turns a regular string into a string-like object similar to what each command returns. This has special methods, like `.to()` and `.toEnd()`. ### env['VAR_NAME'] Object containing environment variables (both getter and setter). Shortcut to `process.env`. ### Pipes Examples: ```javascript grep('foo', 'file1.txt', 'file2.txt').sed(/o/g, 'a').to('output.txt'); echo('files with o\'s in the name:\n' + ls().grep('o')); cat('test.js').exec('node'); // pipe to exec() call ``` Commands can send their output to another command in a pipe-like fashion. `sed`, `grep`, `cat`, `exec`, `to`, and `toEnd` can appear on the right-hand side of a pipe. Pipes can be chained. ## Configuration ### config.silent Example: ```javascript var sh = require('shelljs'); var silentState = sh.config.silent; // save old silent state sh.config.silent = true; /* ... */ sh.config.silent = silentState; // restore old silent state ``` Suppresses all command output if `true`, except for `echo()` calls. Default is `false`. ### config.fatal Example: ```javascript require('shelljs/global'); config.fatal = true; // or set('-e'); cp('this_file_does_not_exist', '/dev/null'); // throws Error here /* more commands... */ ``` If `true`, the script will throw a Javascript error when any shell.js command encounters an error. Default is `false`. This is analogous to Bash's `set -e`. ### config.verbose Example: ```javascript config.verbose = true; // or set('-v'); cd('dir/'); rm('-rf', 'foo.txt', 'bar.txt'); exec('echo hello'); ``` Will print each command as follows: ``` cd dir/ rm -rf foo.txt bar.txt exec echo hello ``` ### config.globOptions Example: ```javascript config.globOptions = {nodir: true}; ``` Use this value for calls to `glob.sync()` instead of the default options. ### config.reset() Example: ```javascript var shell = require('shelljs'); // Make changes to shell.config, and do stuff... /* ... */ shell.config.reset(); // reset to original state // Do more stuff, but with original settings /* ... */ ``` Reset `shell.config` to the defaults: ```javascript { fatal: false, globOptions: {}, maxdepth: 255, noglob: false, silent: false, verbose: false, } ``` ## Team | [](https://github.com/nfischer) | [](http://github.com/freitagbr) | |:---:|:---:| | [Nate Fischer](https://github.com/nfischer) | [Brandon Freitag](http://github.com/freitagbr) | # sprintf.js **sprintf.js** is a complete open source JavaScript sprintf implementation for the *browser* and *node.js*. Its prototype is simple: string sprintf(string format , [mixed arg1 [, mixed arg2 [ ,...]]]) The placeholders in the format string are marked by `%` and are followed by one or more of these elements, in this order: * An optional number followed by a `$` sign that selects which argument index to use for the value. If not specified, arguments will be placed in the same order as the placeholders in the input string. * An optional `+` sign that forces to preceed the result with a plus or minus sign on numeric values. By default, only the `-` sign is used on negative numbers. * An optional padding specifier that says what character to use for padding (if specified). Possible values are `0` or any other character precedeed by a `'` (single quote). The default is to pad with *spaces*. * An optional `-` sign, that causes sprintf to left-align the result of this placeholder. The default is to right-align the result. * An optional number, that says how many characters the result should have. If the value to be returned is shorter than this number, the result will be padded. When used with the `j` (JSON) type specifier, the padding length specifies the tab size used for indentation. * An optional precision modifier, consisting of a `.` (dot) followed by a number, that says how many digits should be displayed for floating point numbers. When used with the `g` type specifier, it specifies the number of significant digits. When used on a string, it causes the result to be truncated. * A type specifier that can be any of: * `%` — yields a literal `%` character * `b` — yields an integer as a binary number * `c` — yields an integer as the character with that ASCII value * `d` or `i` — yields an integer as a signed decimal number * `e` — yields a float using scientific notation * `u` — yields an integer as an unsigned decimal number * `f` — yields a float as is; see notes on precision above * `g` — yields a float as is; see notes on precision above * `o` — yields an integer as an octal number * `s` — yields a string as is * `x` — yields an integer as a hexadecimal number (lower-case) * `X` — yields an integer as a hexadecimal number (upper-case) * `j` — yields a JavaScript object or array as a JSON encoded string ## JavaScript `vsprintf` `vsprintf` is the same as `sprintf` except that it accepts an array of arguments, rather than a variable number of arguments: vsprintf("The first 4 letters of the english alphabet are: %s, %s, %s and %s", ["a", "b", "c", "d"]) ## Argument swapping You can also swap the arguments. That is, the order of the placeholders doesn't have to match the order of the arguments. You can do that by simply indicating in the format string which arguments the placeholders refer to: sprintf("%2$s %3$s a %1$s", "cracker", "Polly", "wants") And, of course, you can repeat the placeholders without having to increase the number of arguments. ## Named arguments Format strings may contain replacement fields rather than positional placeholders. Instead of referring to a certain argument, you can now refer to a certain key within an object. Replacement fields are surrounded by rounded parentheses - `(` and `)` - and begin with a keyword that refers to a key: var user = { name: "Dolly" } sprintf("Hello %(name)s", user) // Hello Dolly Keywords in replacement fields can be optionally followed by any number of keywords or indexes: var users = [ {name: "Dolly"}, {name: "Molly"}, {name: "Polly"} ] sprintf("Hello %(users[0].name)s, %(users[1].name)s and %(users[2].name)s", {users: users}) // Hello Dolly, Molly and Polly Note: mixing positional and named placeholders is not (yet) supported ## Computed values You can pass in a function as a dynamic value and it will be invoked (with no arguments) in order to compute the value on-the-fly. sprintf("Current timestamp: %d", Date.now) // Current timestamp: 1398005382890 sprintf("Current date and time: %s", function() { return new Date().toString() }) # AngularJS You can now use `sprintf` and `vsprintf` (also aliased as `fmt` and `vfmt` respectively) in your AngularJS projects. See `demo/`. # Installation ## Via Bower bower install sprintf ## Or as a node.js module npm install sprintf-js ### Usage var sprintf = require("sprintf-js").sprintf, vsprintf = require("sprintf-js").vsprintf sprintf("%2$s %3$s a %1$s", "cracker", "Polly", "wants") vsprintf("The first 4 letters of the english alphabet are: %s, %s, %s and %s", ["a", "b", "c", "d"]) # License **sprintf.js** is licensed under the terms of the 3-clause BSD license. # yargs-parser  [](https://www.npmjs.com/package/yargs-parser) [](https://conventionalcommits.org)  The mighty option parser used by [yargs](https://github.com/yargs/yargs). visit the [yargs website](http://yargs.js.org/) for more examples, and thorough usage instructions. <img width="250" src="https://raw.githubusercontent.com/yargs/yargs-parser/main/yargs-logo.png"> ## Example ```sh npm i yargs-parser --save ``` ```js const argv = require('yargs-parser')(process.argv.slice(2)) console.log(argv) ``` ```console $ node example.js --foo=33 --bar hello { _: [], foo: 33, bar: 'hello' } ``` _or parse a string!_ ```js const argv = require('yargs-parser')('--foo=99 --bar=33') console.log(argv) ``` ```console { _: [], foo: 99, bar: 33 } ``` Convert an array of mixed types before passing to `yargs-parser`: ```js const parse = require('yargs-parser') parse(['-f', 11, '--zoom', 55].join(' ')) // <-- array to string parse(['-f', 11, '--zoom', 55].map(String)) // <-- array of strings ``` ## Deno Example As of `v19` `yargs-parser` supports [Deno](https://github.com/denoland/deno): ```typescript import parser from "https://deno.land/x/yargs_parser/deno.ts"; const argv = parser('--foo=99 --bar=9987930', { string: ['bar'] }) console.log(argv) ``` ## ESM Example As of `v19` `yargs-parser` supports ESM (_both in Node.js and in the browser_): **Node.js:** ```js import parser from 'yargs-parser' const argv = parser('--foo=99 --bar=9987930', { string: ['bar'] }) console.log(argv) ``` **Browsers:** ```html <!doctype html> <body> <script type="module"> import parser from "https://unpkg.com/yargs-parser@19.0.0/browser.js"; const argv = parser('--foo=99 --bar=9987930', { string: ['bar'] }) console.log(argv) </script> </body> ``` ## API ### parser(args, opts={}) Parses command line arguments returning a simple mapping of keys and values. **expects:** * `args`: a string or array of strings representing the options to parse. * `opts`: provide a set of hints indicating how `args` should be parsed: * `opts.alias`: an object representing the set of aliases for a key: `{alias: {foo: ['f']}}`. * `opts.array`: indicate that keys should be parsed as an array: `{array: ['foo', 'bar']}`.<br> Indicate that keys should be parsed as an array and coerced to booleans / numbers:<br> `{array: [{ key: 'foo', boolean: true }, {key: 'bar', number: true}]}`. * `opts.boolean`: arguments should be parsed as booleans: `{boolean: ['x', 'y']}`. * `opts.coerce`: provide a custom synchronous function that returns a coerced value from the argument provided (or throws an error). For arrays the function is called only once for the entire array:<br> `{coerce: {foo: function (arg) {return modifiedArg}}}`. * `opts.config`: indicate a key that represents a path to a configuration file (this file will be loaded and parsed). * `opts.configObjects`: configuration objects to parse, their properties will be set as arguments:<br> `{configObjects: [{'x': 5, 'y': 33}, {'z': 44}]}`. * `opts.configuration`: provide configuration options to the yargs-parser (see: [configuration](#configuration)). * `opts.count`: indicate a key that should be used as a counter, e.g., `-vvv` = `{v: 3}`. * `opts.default`: provide default values for keys: `{default: {x: 33, y: 'hello world!'}}`. * `opts.envPrefix`: environment variables (`process.env`) with the prefix provided should be parsed. * `opts.narg`: specify that a key requires `n` arguments: `{narg: {x: 2}}`. * `opts.normalize`: `path.normalize()` will be applied to values set to this key. * `opts.number`: keys should be treated as numbers. * `opts.string`: keys should be treated as strings (even if they resemble a number `-x 33`). **returns:** * `obj`: an object representing the parsed value of `args` * `key/value`: key value pairs for each argument and their aliases. * `_`: an array representing the positional arguments. * [optional] `--`: an array with arguments after the end-of-options flag `--`. ### require('yargs-parser').detailed(args, opts={}) Parses a command line string, returning detailed information required by the yargs engine. **expects:** * `args`: a string or array of strings representing options to parse. * `opts`: provide a set of hints indicating how `args`, inputs are identical to `require('yargs-parser')(args, opts={})`. **returns:** * `argv`: an object representing the parsed value of `args` * `key/value`: key value pairs for each argument and their aliases. * `_`: an array representing the positional arguments. * [optional] `--`: an array with arguments after the end-of-options flag `--`. * `error`: populated with an error object if an exception occurred during parsing. * `aliases`: the inferred list of aliases built by combining lists in `opts.alias`. * `newAliases`: any new aliases added via camel-case expansion: * `boolean`: `{ fooBar: true }` * `defaulted`: any new argument created by `opts.default`, no aliases included. * `boolean`: `{ foo: true }` * `configuration`: given by default settings and `opts.configuration`. <a name="configuration"></a> ### Configuration The yargs-parser applies several automated transformations on the keys provided in `args`. These features can be turned on and off using the `configuration` field of `opts`. ```js var parsed = parser(['--no-dice'], { configuration: { 'boolean-negation': false } }) ``` ### short option groups * default: `true`. * key: `short-option-groups`. Should a group of short-options be treated as boolean flags? ```console $ node example.js -abc { _: [], a: true, b: true, c: true } ``` _if disabled:_ ```console $ node example.js -abc { _: [], abc: true } ``` ### camel-case expansion * default: `true`. * key: `camel-case-expansion`. Should hyphenated arguments be expanded into camel-case aliases? ```console $ node example.js --foo-bar { _: [], 'foo-bar': true, fooBar: true } ``` _if disabled:_ ```console $ node example.js --foo-bar { _: [], 'foo-bar': true } ``` ### dot-notation * default: `true` * key: `dot-notation` Should keys that contain `.` be treated as objects? ```console $ node example.js --foo.bar { _: [], foo: { bar: true } } ``` _if disabled:_ ```console $ node example.js --foo.bar { _: [], "foo.bar": true } ``` ### parse numbers * default: `true` * key: `parse-numbers` Should keys that look like numbers be treated as such? ```console $ node example.js --foo=99.3 { _: [], foo: 99.3 } ``` _if disabled:_ ```console $ node example.js --foo=99.3 { _: [], foo: "99.3" } ``` ### parse positional numbers * default: `true` * key: `parse-positional-numbers` Should positional keys that look like numbers be treated as such. ```console $ node example.js 99.3 { _: [99.3] } ``` _if disabled:_ ```console $ node example.js 99.3 { _: ['99.3'] } ``` ### boolean negation * default: `true` * key: `boolean-negation` Should variables prefixed with `--no` be treated as negations? ```console $ node example.js --no-foo { _: [], foo: false } ``` _if disabled:_ ```console $ node example.js --no-foo { _: [], "no-foo": true } ``` ### combine arrays * default: `false` * key: `combine-arrays` Should arrays be combined when provided by both command line arguments and a configuration file. ### duplicate arguments array * default: `true` * key: `duplicate-arguments-array` Should arguments be coerced into an array when duplicated: ```console $ node example.js -x 1 -x 2 { _: [], x: [1, 2] } ``` _if disabled:_ ```console $ node example.js -x 1 -x 2 { _: [], x: 2 } ``` ### flatten duplicate arrays * default: `true` * key: `flatten-duplicate-arrays` Should array arguments be coerced into a single array when duplicated: ```console $ node example.js -x 1 2 -x 3 4 { _: [], x: [1, 2, 3, 4] } ``` _if disabled:_ ```console $ node example.js -x 1 2 -x 3 4 { _: [], x: [[1, 2], [3, 4]] } ``` ### greedy arrays * default: `true` * key: `greedy-arrays` Should arrays consume more than one positional argument following their flag. ```console $ node example --arr 1 2 { _: [], arr: [1, 2] } ``` _if disabled:_ ```console $ node example --arr 1 2 { _: [2], arr: [1] } ``` **Note: in `v18.0.0` we are considering defaulting greedy arrays to `false`.** ### nargs eats options * default: `false` * key: `nargs-eats-options` Should nargs consume dash options as well as positional arguments. ### negation prefix * default: `no-` * key: `negation-prefix` The prefix to use for negated boolean variables. ```console $ node example.js --no-foo { _: [], foo: false } ``` _if set to `quux`:_ ```console $ node example.js --quuxfoo { _: [], foo: false } ``` ### populate -- * default: `false`. * key: `populate--` Should unparsed flags be stored in `--` or `_`. _If disabled:_ ```console $ node example.js a -b -- x y { _: [ 'a', 'x', 'y' ], b: true } ``` _If enabled:_ ```console $ node example.js a -b -- x y { _: [ 'a' ], '--': [ 'x', 'y' ], b: true } ``` ### set placeholder key * default: `false`. * key: `set-placeholder-key`. Should a placeholder be added for keys not set via the corresponding CLI argument? _If disabled:_ ```console $ node example.js -a 1 -c 2 { _: [], a: 1, c: 2 } ``` _If enabled:_ ```console $ node example.js -a 1 -c 2 { _: [], a: 1, b: undefined, c: 2 } ``` ### halt at non-option * default: `false`. * key: `halt-at-non-option`. Should parsing stop at the first positional argument? This is similar to how e.g. `ssh` parses its command line. _If disabled:_ ```console $ node example.js -a run b -x y { _: [ 'b' ], a: 'run', x: 'y' } ``` _If enabled:_ ```console $ node example.js -a run b -x y { _: [ 'b', '-x', 'y' ], a: 'run' } ``` ### strip aliased * default: `false` * key: `strip-aliased` Should aliases be removed before returning results? _If disabled:_ ```console $ node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1, 'test-alias': 1, testAlias: 1 } ``` _If enabled:_ ```console $ node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1 } ``` ### strip dashed * default: `false` * key: `strip-dashed` Should dashed keys be removed before returning results? This option has no effect if `camel-case-expansion` is disabled. _If disabled:_ ```console $ node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1 } ``` _If enabled:_ ```console $ node example.js --test-field 1 { _: [], testField: 1 } ``` ### unknown options as args * default: `false` * key: `unknown-options-as-args` Should unknown options be treated like regular arguments? An unknown option is one that is not configured in `opts`. _If disabled_ ```console $ node example.js --unknown-option --known-option 2 --string-option --unknown-option2 { _: [], unknownOption: true, knownOption: 2, stringOption: '', unknownOption2: true } ``` _If enabled_ ```console $ node example.js --unknown-option --known-option 2 --string-option --unknown-option2 { _: ['--unknown-option'], knownOption: 2, stringOption: '--unknown-option2' } ``` ## Supported Node.js Versions Libraries in this ecosystem make a best effort to track [Node.js' release schedule](https://nodejs.org/en/about/releases/). Here's [a post on why we think this is important](https://medium.com/the-node-js-collection/maintainers-should-consider-following-node-js-release-schedule-ab08ed4de71a). ## Special Thanks The yargs project evolves from optimist and minimist. It owes its existence to a lot of James Halliday's hard work. Thanks [substack](https://github.com/substack) **beep** **boop** \o/ ## License ISC [](https://www.npmjs.com/package/esprima) [](https://www.npmjs.com/package/esprima) [](https://travis-ci.org/jquery/esprima) [](https://codecov.io/github/jquery/esprima) **Esprima** ([esprima.org](http://esprima.org), BSD license) is a high performance, standard-compliant [ECMAScript](http://www.ecma-international.org/publications/standards/Ecma-262.htm) parser written in ECMAScript (also popularly known as [JavaScript](https://en.wikipedia.org/wiki/JavaScript)). Esprima is created and maintained by [Ariya Hidayat](https://twitter.com/ariyahidayat), with the help of [many contributors](https://github.com/jquery/esprima/contributors). ### Features - Full support for ECMAScript 2017 ([ECMA-262 8th Edition](http://www.ecma-international.org/publications/standards/Ecma-262.htm)) - Sensible [syntax tree format](https://github.com/estree/estree/blob/master/es5.md) as standardized by [ESTree project](https://github.com/estree/estree) - Experimental support for [JSX](https://facebook.github.io/jsx/), a syntax extension for [React](https://facebook.github.io/react/) - Optional tracking of syntax node location (index-based and line-column) - [Heavily tested](http://esprima.org/test/ci.html) (~1500 [unit tests](https://github.com/jquery/esprima/tree/master/test/fixtures) with [full code coverage](https://codecov.io/github/jquery/esprima)) ### API Esprima can be used to perform [lexical analysis](https://en.wikipedia.org/wiki/Lexical_analysis) (tokenization) or [syntactic analysis](https://en.wikipedia.org/wiki/Parsing) (parsing) of a JavaScript program. A simple example on Node.js REPL: ```javascript > var esprima = require('esprima'); > var program = 'const answer = 42'; > esprima.tokenize(program); [ { type: 'Keyword', value: 'const' }, { type: 'Identifier', value: 'answer' }, { type: 'Punctuator', value: '=' }, { type: 'Numeric', value: '42' } ] > esprima.parseScript(program); { type: 'Program', body: [ { type: 'VariableDeclaration', declarations: [Object], kind: 'const' } ], sourceType: 'script' } ``` For more information, please read the [complete documentation](http://esprima.org/doc). ### Esrecurse [](https://travis-ci.org/estools/esrecurse) Esrecurse ([esrecurse](https://github.com/estools/esrecurse)) is [ECMAScript](https://www.ecma-international.org/publications/standards/Ecma-262.htm) recursive traversing functionality. ### Example Usage The following code will output all variables declared at the root of a file. ```javascript esrecurse.visit(ast, { XXXStatement: function (node) { this.visit(node.left); // do something... this.visit(node.right); } }); ``` We can use `Visitor` instance. ```javascript var visitor = new esrecurse.Visitor({ XXXStatement: function (node) { this.visit(node.left); // do something... this.visit(node.right); } }); visitor.visit(ast); ``` We can inherit `Visitor` instance easily. ```javascript class Derived extends esrecurse.Visitor { constructor() { super(null); } XXXStatement(node) { } } ``` ```javascript function DerivedVisitor() { esrecurse.Visitor.call(/* this for constructor */ this /* visitor object automatically becomes this. */); } util.inherits(DerivedVisitor, esrecurse.Visitor); DerivedVisitor.prototype.XXXStatement = function (node) { this.visit(node.left); // do something... this.visit(node.right); }; ``` And you can invoke default visiting operation inside custom visit operation. ```javascript function DerivedVisitor() { esrecurse.Visitor.call(/* this for constructor */ this /* visitor object automatically becomes this. */); } util.inherits(DerivedVisitor, esrecurse.Visitor); DerivedVisitor.prototype.XXXStatement = function (node) { // do something... this.visitChildren(node); }; ``` The `childVisitorKeys` option does customize the behaviour of `this.visitChildren(node)`. We can use user-defined node types. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; esrecurse.visit( ast, { Literal: function (node) { // do something... } }, { // Extending the existing traversing rules. childVisitorKeys: { // TargetNodeName: [ 'keys', 'containing', 'the', 'other', '**node**' ] TestExpression: ['argument'] } } ); ``` We can use the `fallback` option as well. If the `fallback` option is `"iteration"`, `esrecurse` would visit all enumerable properties of unknown nodes. Please note circular references cause the stack overflow. AST might have circular references in additional properties for some purpose (e.g. `node.parent`). ```javascript esrecurse.visit( ast, { Literal: function (node) { // do something... } }, { fallback: 'iteration' } ); ``` If the `fallback` option is a function, `esrecurse` calls this function to determine the enumerable properties of unknown nodes. Please note circular references cause the stack overflow. AST might have circular references in additional properties for some purpose (e.g. `node.parent`). ```javascript esrecurse.visit( ast, { Literal: function (node) { // do something... } }, { fallback: function (node) { return Object.keys(node).filter(function(key) { return key !== 'argument' }); } } ); ``` ### License Copyright (C) 2014 [Yusuke Suzuki](https://github.com/Constellation) (twitter: [@Constellation](https://twitter.com/Constellation)) and other contributors. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # Near Bindings Generator Transforms the Assembyscript AST to serialize exported functions and add `encode` and `decode` functions for generating and parsing JSON strings. ## Using via CLI After installling, `npm install nearprotocol/near-bindgen-as`, it can be added to the cli arguments of the assemblyscript compiler you must add the following: ```bash asc <file> --transform near-bindgen-as ... ``` This module also adds a binary `near-asc` which adds the default arguments required to build near contracts as well as the transformer. ```bash near-asc <input file> <output file> ``` ## Using a script to compile Another way is to add a file such as `asconfig.js` such as: ```js const compile = require("near-bindgen-as/compiler").compile; compile("assembly/index.ts", // input file "out/index.wasm", // output file [ // "-O1", // Optional arguments "--debug", "--measure" ], // Prints out the final cli arguments passed to compiler. {verbose: true} ); ``` It can then be built with `node asconfig.js`. There is an example of this in the test directory. # AssemblyScript Rtrace A tiny utility to sanitize the AssemblyScript runtime. Records allocations and frees performed by the runtime and emits an error if something is off. Also checks for leaks. Instructions ------------ Compile your module that uses the full or half runtime with `-use ASC_RTRACE=1 --explicitStart` and include an instance of this module as the import named `rtrace`. ```js const rtrace = new Rtrace({ onerror(err, info) { // handle error }, oninfo(msg) { // print message, optional }, getMemory() { // obtain the module's memory, // e.g. with --explicitStart: return instance.exports.memory; } }); const { module, instance } = await WebAssembly.instantiate(..., rtrace.install({ ...imports... }) ); instance.exports._start(); ... if (rtrace.active) { let leakCount = rtr.check(); if (leakCount) { // handle error } } ``` Note that references in globals which are not cleared before collection is performed appear as leaks, including their inner members. A TypedArray would leak itself and its backing ArrayBuffer in this case for example. This is perfectly normal and clearing all globals avoids this. # flatted [](https://www.npmjs.com/package/flatted) [](https://coveralls.io/github/WebReflection/flatted?branch=main) [](https://travis-ci.com/WebReflection/flatted) [](https://opensource.org/licenses/ISC)   <sup>**Social Media Photo by [Matt Seymour](https://unsplash.com/@mattseymour) on [Unsplash](https://unsplash.com/)**</sup> ## Announcement 📣 There is a standard approach to recursion and more data-types than what JSON allows, and it's part of the [Structured Clone polyfill](https://github.com/ungap/structured-clone/#readme). Beside acting as a polyfill, its `@ungap/structured-clone/json` export provides both `stringify` and `parse`, and it's been tested for being faster than *flatted*, but its produced output is also smaller than *flatted* in general. The *@ungap/structured-clone* module is, in short, a drop in replacement for *flatted*, but it's not compatible with *flatted* specialized syntax. However, if recursion, as well as more data-types, are what you are after, or interesting for your projects/use cases, consider switching to this new module whenever you can 👍 - - - A super light (0.5K) and fast circular JSON parser, directly from the creator of [CircularJSON](https://github.com/WebReflection/circular-json/#circularjson). Now available also for **[PHP](./php/flatted.php)**. ```js npm i flatted ``` Usable via [CDN](https://unpkg.com/flatted) or as regular module. ```js // ESM import {parse, stringify, toJSON, fromJSON} from 'flatted'; // CJS const {parse, stringify, toJSON, fromJSON} = require('flatted'); const a = [{}]; a[0].a = a; a.push(a); stringify(a); // [["1","0"],{"a":"0"}] ``` ## toJSON and fromJSON If you'd like to implicitly survive JSON serialization, these two helpers helps: ```js import {toJSON, fromJSON} from 'flatted'; class RecursiveMap extends Map { static fromJSON(any) { return new this(fromJSON(any)); } toJSON() { return toJSON([...this.entries()]); } } const recursive = new RecursiveMap; const same = {}; same.same = same; recursive.set('same', same); const asString = JSON.stringify(recursive); const asMap = RecursiveMap.fromJSON(JSON.parse(asString)); asMap.get('same') === asMap.get('same').same; // true ``` ## Flatted VS JSON As it is for every other specialized format capable of serializing and deserializing circular data, you should never `JSON.parse(Flatted.stringify(data))`, and you should never `Flatted.parse(JSON.stringify(data))`. The only way this could work is to `Flatted.parse(Flatted.stringify(data))`, as it is also for _CircularJSON_ or any other, otherwise there's no granted data integrity. Also please note this project serializes and deserializes only data compatible with JSON, so that sockets, or anything else with internal classes different from those allowed by JSON standard, won't be serialized and unserialized as expected. ### New in V1: Exact same JSON API * Added a [reviver](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/parse#Syntax) parameter to `.parse(string, reviver)` and revive your own objects. * Added a [replacer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify#Syntax) and a `space` parameter to `.stringify(object, replacer, space)` for feature parity with JSON signature. ### Compatibility All ECMAScript engines compatible with `Map`, `Set`, `Object.keys`, and `Array.prototype.reduce` will work, even if polyfilled. ### How does it work ? While stringifying, all Objects, including Arrays, and strings, are flattened out and replaced as unique index. `*` Once parsed, all indexes will be replaced through the flattened collection. <sup><sub>`*` represented as string to avoid conflicts with numbers</sub></sup> ```js // logic example var a = [{one: 1}, {two: '2'}]; a[0].a = a; // a is the main object, will be at index '0' // {one: 1} is the second object, index '1' // {two: '2'} the third, in '2', and it has a string // which will be found at index '3' Flatted.stringify(a); // [["1","2"],{"one":1,"a":"0"},{"two":"3"},"2"] // a[one,two] {one: 1, a} {two: '2'} '2' ``` # fs-minipass Filesystem streams based on [minipass](http://npm.im/minipass). 4 classes are exported: - ReadStream - ReadStreamSync - WriteStream - WriteStreamSync When using `ReadStreamSync`, all of the data is made available immediately upon consuming the stream. Nothing is buffered in memory when the stream is constructed. If the stream is piped to a writer, then it will synchronously `read()` and emit data into the writer as fast as the writer can consume it. (That is, it will respect backpressure.) If you call `stream.read()` then it will read the entire file and return the contents. When using `WriteStreamSync`, every write is flushed to the file synchronously. If your writes all come in a single tick, then it'll write it all out in a single tick. It's as synchronous as you are. The async versions work much like their node builtin counterparts, with the exception of introducing significantly less Stream machinery overhead. ## USAGE It's just streams, you pipe them or read() them or write() to them. ```js const fsm = require('fs-minipass') const readStream = new fsm.ReadStream('file.txt') const writeStream = new fsm.WriteStream('output.txt') writeStream.write('some file header or whatever\n') readStream.pipe(writeStream) ``` ## ReadStream(path, options) Path string is required, but somewhat irrelevant if an open file descriptor is passed in as an option. Options: - `fd` Pass in a numeric file descriptor, if the file is already open. - `readSize` The size of reads to do, defaults to 16MB - `size` The size of the file, if known. Prevents zero-byte read() call at the end. - `autoClose` Set to `false` to prevent the file descriptor from being closed when the file is done being read. ## WriteStream(path, options) Path string is required, but somewhat irrelevant if an open file descriptor is passed in as an option. Options: - `fd` Pass in a numeric file descriptor, if the file is already open. - `mode` The mode to create the file with. Defaults to `0o666`. - `start` The position in the file to start reading. If not specified, then the file will start writing at position zero, and be truncated by default. - `autoClose` Set to `false` to prevent the file descriptor from being closed when the stream is ended. - `flags` Flags to use when opening the file. Irrelevant if `fd` is passed in, since file won't be opened in that case. Defaults to `'a'` if a `pos` is specified, or `'w'` otherwise. binaryen.js =========== **binaryen.js** is a port of [Binaryen](https://github.com/WebAssembly/binaryen) to the Web, allowing you to generate [WebAssembly](https://webassembly.org) using a JavaScript API. <a href="https://github.com/AssemblyScript/binaryen.js/actions?query=workflow%3ABuild"><img src="https://img.shields.io/github/workflow/status/AssemblyScript/binaryen.js/Build/master?label=build&logo=github" alt="Build status" /></a> <a href="https://www.npmjs.com/package/binaryen"><img src="https://img.shields.io/npm/v/binaryen.svg?label=latest&color=007acc&logo=npm" alt="npm version" /></a> <a href="https://www.npmjs.com/package/binaryen"><img src="https://img.shields.io/npm/v/binaryen/nightly.svg?label=nightly&color=007acc&logo=npm" alt="npm nightly version" /></a> Usage ----- ``` $> npm install binaryen ``` ```js var binaryen = require("binaryen"); // Create a module with a single function var myModule = new binaryen.Module(); myModule.addFunction("add", binaryen.createType([ binaryen.i32, binaryen.i32 ]), binaryen.i32, [ binaryen.i32 ], myModule.block(null, [ myModule.local.set(2, myModule.i32.add( myModule.local.get(0, binaryen.i32), myModule.local.get(1, binaryen.i32) ) ), myModule.return( myModule.local.get(2, binaryen.i32) ) ]) ); myModule.addFunctionExport("add", "add"); // Optimize the module using default passes and levels myModule.optimize(); // Validate the module if (!myModule.validate()) throw new Error("validation error"); // Generate text format and binary var textData = myModule.emitText(); var wasmData = myModule.emitBinary(); // Example usage with the WebAssembly API var compiled = new WebAssembly.Module(wasmData); var instance = new WebAssembly.Instance(compiled, {}); console.log(instance.exports.add(41, 1)); ``` The buildbot also publishes nightly versions once a day if there have been changes. The latest nightly can be installed through ``` $> npm install binaryen@nightly ``` or you can use one of the [previous versions](https://github.com/AssemblyScript/binaryen.js/tags) instead if necessary. ### Usage with a CDN * From GitHub via [jsDelivr](https://www.jsdelivr.com):<br /> `https://cdn.jsdelivr.net/gh/AssemblyScript/binaryen.js@VERSION/index.js` * From npm via [jsDelivr](https://www.jsdelivr.com):<br /> `https://cdn.jsdelivr.net/npm/binaryen@VERSION/index.js` * From npm via [unpkg](https://unpkg.com):<br /> `https://unpkg.com/binaryen@VERSION/index.js` Replace `VERSION` with a [specific version](https://github.com/AssemblyScript/binaryen.js/releases) or omit it (not recommended in production) to use master/latest. API --- **Please note** that the Binaryen API is evolving fast and that definitions and documentation provided by the package tend to get out of sync despite our best efforts. It's a bot after all. If you rely on binaryen.js and spot an issue, please consider sending a PR our way by updating [index.d.ts](./index.d.ts) and [README.md](./README.md) to reflect the [current API](https://github.com/WebAssembly/binaryen/blob/master/src/js/binaryen.js-post.js). <!-- START doctoc generated TOC please keep comment here to allow auto update --> <!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE --> ### Contents - [Types](#types) - [Module construction](#module-construction) - [Module manipulation](#module-manipulation) - [Module validation](#module-validation) - [Module optimization](#module-optimization) - [Module creation](#module-creation) - [Expression construction](#expression-construction) - [Control flow](#control-flow) - [Variable accesses](#variable-accesses) - [Integer operations](#integer-operations) - [Floating point operations](#floating-point-operations) - [Datatype conversions](#datatype-conversions) - [Function calls](#function-calls) - [Linear memory accesses](#linear-memory-accesses) - [Host operations](#host-operations) - [Vector operations 🦄](#vector-operations-) - [Atomic memory accesses 🦄](#atomic-memory-accesses-) - [Atomic read-modify-write operations 🦄](#atomic-read-modify-write-operations-) - [Atomic wait and notify operations 🦄](#atomic-wait-and-notify-operations-) - [Sign extension operations 🦄](#sign-extension-operations-) - [Multi-value operations 🦄](#multi-value-operations-) - [Exception handling operations 🦄](#exception-handling-operations-) - [Reference types operations 🦄](#reference-types-operations-) - [Expression manipulation](#expression-manipulation) - [Relooper](#relooper) - [Source maps](#source-maps) - [Debugging](#debugging) <!-- END doctoc generated TOC please keep comment here to allow auto update --> [Future features](http://webassembly.org/docs/future-features/) 🦄 might not be supported by all runtimes. ### Types * **none**: `Type`<br /> The none type, e.g., `void`. * **i32**: `Type`<br /> 32-bit integer type. * **i64**: `Type`<br /> 64-bit integer type. * **f32**: `Type`<br /> 32-bit float type. * **f64**: `Type`<br /> 64-bit float (double) type. * **v128**: `Type`<br /> 128-bit vector type. 🦄 * **funcref**: `Type`<br /> A function reference. 🦄 * **anyref**: `Type`<br /> Any host reference. 🦄 * **nullref**: `Type`<br /> A null reference. 🦄 * **exnref**: `Type`<br /> An exception reference. 🦄 * **unreachable**: `Type`<br /> Special type indicating unreachable code when obtaining information about an expression. * **auto**: `Type`<br /> Special type used in **Module#block** exclusively. Lets the API figure out a block's result type automatically. * **createType**(types: `Type[]`): `Type`<br /> Creates a multi-value type from an array of types. * **expandType**(type: `Type`): `Type[]`<br /> Expands a multi-value type to an array of types. ### Module construction * new **Module**()<br /> Constructs a new module. * **parseText**(text: `string`): `Module`<br /> Creates a module from Binaryen's s-expression text format (not official stack-style text format). * **readBinary**(data: `Uint8Array`): `Module`<br /> Creates a module from binary data. ### Module manipulation * Module#**addFunction**(name: `string`, params: `Type`, results: `Type`, vars: `Type[]`, body: `ExpressionRef`): `FunctionRef`<br /> Adds a function. `vars` indicate additional locals, in the given order. * Module#**getFunction**(name: `string`): `FunctionRef`<br /> Gets a function, by name, * Module#**removeFunction**(name: `string`): `void`<br /> Removes a function, by name. * Module#**getNumFunctions**(): `number`<br /> Gets the number of functions within the module. * Module#**getFunctionByIndex**(index: `number`): `FunctionRef`<br /> Gets the function at the specified index. * Module#**addFunctionImport**(internalName: `string`, externalModuleName: `string`, externalBaseName: `string`, params: `Type`, results: `Type`): `void`<br /> Adds a function import. * Module#**addTableImport**(internalName: `string`, externalModuleName: `string`, externalBaseName: `string`): `void`<br /> Adds a table import. There's just one table for now, using name `"0"`. * Module#**addMemoryImport**(internalName: `string`, externalModuleName: `string`, externalBaseName: `string`): `void`<br /> Adds a memory import. There's just one memory for now, using name `"0"`. * Module#**addGlobalImport**(internalName: `string`, externalModuleName: `string`, externalBaseName: `string`, globalType: `Type`): `void`<br /> Adds a global variable import. Imported globals must be immutable. * Module#**addFunctionExport**(internalName: `string`, externalName: `string`): `ExportRef`<br /> Adds a function export. * Module#**addTableExport**(internalName: `string`, externalName: `string`): `ExportRef`<br /> Adds a table export. There's just one table for now, using name `"0"`. * Module#**addMemoryExport**(internalName: `string`, externalName: `string`): `ExportRef`<br /> Adds a memory export. There's just one memory for now, using name `"0"`. * Module#**addGlobalExport**(internalName: `string`, externalName: `string`): `ExportRef`<br /> Adds a global variable export. Exported globals must be immutable. * Module#**getNumExports**(): `number`<br /> Gets the number of exports witin the module. * Module#**getExportByIndex**(index: `number`): `ExportRef`<br /> Gets the export at the specified index. * Module#**removeExport**(externalName: `string`): `void`<br /> Removes an export, by external name. * Module#**addGlobal**(name: `string`, type: `Type`, mutable: `number`, value: `ExpressionRef`): `GlobalRef`<br /> Adds a global instance variable. * Module#**getGlobal**(name: `string`): `GlobalRef`<br /> Gets a global, by name, * Module#**removeGlobal**(name: `string`): `void`<br /> Removes a global, by name. * Module#**setFunctionTable**(initial: `number`, maximum: `number`, funcs: `string[]`, offset?: `ExpressionRef`): `void`<br /> Sets the contents of the function table. There's just one table for now, using name `"0"`. * Module#**getFunctionTable**(): `{ imported: boolean, segments: TableElement[] }`<br /> Gets the contents of the function table. * TableElement#**offset**: `ExpressionRef` * TableElement#**names**: `string[]` * Module#**setMemory**(initial: `number`, maximum: `number`, exportName: `string | null`, segments: `MemorySegment[]`, flags?: `number[]`, shared?: `boolean`): `void`<br /> Sets the memory. There's just one memory for now, using name `"0"`. Providing `exportName` also creates a memory export. * MemorySegment#**offset**: `ExpressionRef` * MemorySegment#**data**: `Uint8Array` * MemorySegment#**passive**: `boolean` * Module#**getNumMemorySegments**(): `number`<br /> Gets the number of memory segments within the module. * Module#**getMemorySegmentInfoByIndex**(index: `number`): `MemorySegmentInfo`<br /> Gets information about the memory segment at the specified index. * MemorySegmentInfo#**offset**: `number` * MemorySegmentInfo#**data**: `Uint8Array` * MemorySegmentInfo#**passive**: `boolean` * Module#**setStart**(start: `FunctionRef`): `void`<br /> Sets the start function. * Module#**getFeatures**(): `Features`<br /> Gets the WebAssembly features enabled for this module. Note that the return value may be a bitmask indicating multiple features. Possible feature flags are: * Features.**MVP**: `Features` * Features.**Atomics**: `Features` * Features.**BulkMemory**: `Features` * Features.**MutableGlobals**: `Features` * Features.**NontrappingFPToInt**: `Features` * Features.**SignExt**: `Features` * Features.**SIMD128**: `Features` * Features.**ExceptionHandling**: `Features` * Features.**TailCall**: `Features` * Features.**ReferenceTypes**: `Features` * Features.**Multivalue**: `Features` * Features.**All**: `Features` * Module#**setFeatures**(features: `Features`): `void`<br /> Sets the WebAssembly features enabled for this module. * Module#**addCustomSection**(name: `string`, contents: `Uint8Array`): `void`<br /> Adds a custom section to the binary. * Module#**autoDrop**(): `void`<br /> Enables automatic insertion of `drop` operations where needed. Lets you not worry about dropping when creating your code. * **getFunctionInfo**(ftype: `FunctionRef`: `FunctionInfo`<br /> Obtains information about a function. * FunctionInfo#**name**: `string` * FunctionInfo#**module**: `string | null` (if imported) * FunctionInfo#**base**: `string | null` (if imported) * FunctionInfo#**params**: `Type` * FunctionInfo#**results**: `Type` * FunctionInfo#**vars**: `Type` * FunctionInfo#**body**: `ExpressionRef` * **getGlobalInfo**(global: `GlobalRef`): `GlobalInfo`<br /> Obtains information about a global. * GlobalInfo#**name**: `string` * GlobalInfo#**module**: `string | null` (if imported) * GlobalInfo#**base**: `string | null` (if imported) * GlobalInfo#**type**: `Type` * GlobalInfo#**mutable**: `boolean` * GlobalInfo#**init**: `ExpressionRef` * **getExportInfo**(export_: `ExportRef`): `ExportInfo`<br /> Obtains information about an export. * ExportInfo#**kind**: `ExternalKind` * ExportInfo#**name**: `string` * ExportInfo#**value**: `string` Possible `ExternalKind` values are: * **ExternalFunction**: `ExternalKind` * **ExternalTable**: `ExternalKind` * **ExternalMemory**: `ExternalKind` * **ExternalGlobal**: `ExternalKind` * **ExternalEvent**: `ExternalKind` * **getEventInfo**(event: `EventRef`): `EventInfo`<br /> Obtains information about an event. * EventInfo#**name**: `string` * EventInfo#**module**: `string | null` (if imported) * EventInfo#**base**: `string | null` (if imported) * EventInfo#**attribute**: `number` * EventInfo#**params**: `Type` * EventInfo#**results**: `Type` * **getSideEffects**(expr: `ExpressionRef`, features: `FeatureFlags`): `SideEffects`<br /> Gets the side effects of the specified expression. * SideEffects.**None**: `SideEffects` * SideEffects.**Branches**: `SideEffects` * SideEffects.**Calls**: `SideEffects` * SideEffects.**ReadsLocal**: `SideEffects` * SideEffects.**WritesLocal**: `SideEffects` * SideEffects.**ReadsGlobal**: `SideEffects` * SideEffects.**WritesGlobal**: `SideEffects` * SideEffects.**ReadsMemory**: `SideEffects` * SideEffects.**WritesMemory**: `SideEffects` * SideEffects.**ImplicitTrap**: `SideEffects` * SideEffects.**IsAtomic**: `SideEffects` * SideEffects.**Throws**: `SideEffects` * SideEffects.**Any**: `SideEffects` ### Module validation * Module#**validate**(): `boolean`<br /> Validates the module. Returns `true` if valid, otherwise prints validation errors and returns `false`. ### Module optimization * Module#**optimize**(): `void`<br /> Optimizes the module using the default optimization passes. * Module#**optimizeFunction**(func: `FunctionRef | string`): `void`<br /> Optimizes a single function using the default optimization passes. * Module#**runPasses**(passes: `string[]`): `void`<br /> Runs the specified passes on the module. * Module#**runPassesOnFunction**(func: `FunctionRef | string`, passes: `string[]`): `void`<br /> Runs the specified passes on a single function. * **getOptimizeLevel**(): `number`<br /> Gets the currently set optimize level. `0`, `1`, `2` correspond to `-O0`, `-O1`, `-O2` (default), etc. * **setOptimizeLevel**(level: `number`): `void`<br /> Sets the optimization level to use. `0`, `1`, `2` correspond to `-O0`, `-O1`, `-O2` (default), etc. * **getShrinkLevel**(): `number`<br /> Gets the currently set shrink level. `0`, `1`, `2` correspond to `-O0`, `-Os` (default), `-Oz`. * **setShrinkLevel**(level: `number`): `void`<br /> Sets the shrink level to use. `0`, `1`, `2` correspond to `-O0`, `-Os` (default), `-Oz`. * **getDebugInfo**(): `boolean`<br /> Gets whether generating debug information is currently enabled or not. * **setDebugInfo**(on: `boolean`): `void`<br /> Enables or disables debug information in emitted binaries. * **getLowMemoryUnused**(): `boolean`<br /> Gets whether the low 1K of memory can be considered unused when optimizing. * **setLowMemoryUnused**(on: `boolean`): `void`<br /> Enables or disables whether the low 1K of memory can be considered unused when optimizing. * **getPassArgument**(key: `string`): `string | null`<br /> Gets the value of the specified arbitrary pass argument. * **setPassArgument**(key: `string`, value: `string | null`): `void`<br /> Sets the value of the specified arbitrary pass argument. Removes the respective argument if `value` is `null`. * **clearPassArguments**(): `void`<br /> Clears all arbitrary pass arguments. * **getAlwaysInlineMaxSize**(): `number`<br /> Gets the function size at which we always inline. * **setAlwaysInlineMaxSize**(size: `number`): `void`<br /> Sets the function size at which we always inline. * **getFlexibleInlineMaxSize**(): `number`<br /> Gets the function size which we inline when functions are lightweight. * **setFlexibleInlineMaxSize**(size: `number`): `void`<br /> Sets the function size which we inline when functions are lightweight. * **getOneCallerInlineMaxSize**(): `number`<br /> Gets the function size which we inline when there is only one caller. * **setOneCallerInlineMaxSize**(size: `number`): `void`<br /> Sets the function size which we inline when there is only one caller. ### Module creation * Module#**emitBinary**(): `Uint8Array`<br /> Returns the module in binary format. * Module#**emitBinary**(sourceMapUrl: `string | null`): `BinaryWithSourceMap`<br /> Returns the module in binary format with its source map. If `sourceMapUrl` is `null`, source map generation is skipped. * BinaryWithSourceMap#**binary**: `Uint8Array` * BinaryWithSourceMap#**sourceMap**: `string | null` * Module#**emitText**(): `string`<br /> Returns the module in Binaryen's s-expression text format (not official stack-style text format). * Module#**emitAsmjs**(): `string`<br /> Returns the [asm.js](http://asmjs.org/) representation of the module. * Module#**dispose**(): `void`<br /> Releases the resources held by the module once it isn't needed anymore. ### Expression construction #### [Control flow](http://webassembly.org/docs/semantics/#control-constructs-and-instructions) * Module#**block**(label: `string | null`, children: `ExpressionRef[]`, resultType?: `Type`): `ExpressionRef`<br /> Creates a block. `resultType` defaults to `none`. * Module#**if**(condition: `ExpressionRef`, ifTrue: `ExpressionRef`, ifFalse?: `ExpressionRef`): `ExpressionRef`<br /> Creates an if or if/else combination. * Module#**loop**(label: `string | null`, body: `ExpressionRef`): `ExpressionRef`<br /> Creates a loop. * Module#**br**(label: `string`, condition?: `ExpressionRef`, value?: `ExpressionRef`): `ExpressionRef`<br /> Creates a branch (br) to a label. * Module#**switch**(labels: `string[]`, defaultLabel: `string`, condition: `ExpressionRef`, value?: `ExpressionRef`): `ExpressionRef`<br /> Creates a switch (br_table). * Module#**nop**(): `ExpressionRef`<br /> Creates a no-operation (nop) instruction. * Module#**return**(value?: `ExpressionRef`): `ExpressionRef` Creates a return. * Module#**unreachable**(): `ExpressionRef`<br /> Creates an [unreachable](http://webassembly.org/docs/semantics/#unreachable) instruction that will always trap. * Module#**drop**(value: `ExpressionRef`): `ExpressionRef`<br /> Creates a [drop](http://webassembly.org/docs/semantics/#type-parametric-operators) of a value. * Module#**select**(condition: `ExpressionRef`, ifTrue: `ExpressionRef`, ifFalse: `ExpressionRef`, type?: `Type`): `ExpressionRef`<br /> Creates a [select](http://webassembly.org/docs/semantics/#type-parametric-operators) of one of two values. #### [Variable accesses](http://webassembly.org/docs/semantics/#local-variables) * Module#**local.get**(index: `number`, type: `Type`): `ExpressionRef`<br /> Creates a local.get for the local at the specified index. Note that we must specify the type here as we may not have created the local being accessed yet. * Module#**local.set**(index: `number`, value: `ExpressionRef`): `ExpressionRef`<br /> Creates a local.set for the local at the specified index. * Module#**local.tee**(index: `number`, value: `ExpressionRef`, type: `Type`): `ExpressionRef`<br /> Creates a local.tee for the local at the specified index. A tee differs from a set in that the value remains on the stack. Note that we must specify the type here as we may not have created the local being accessed yet. * Module#**global.get**(name: `string`, type: `Type`): `ExpressionRef`<br /> Creates a global.get for the global with the specified name. Note that we must specify the type here as we may not have created the global being accessed yet. * Module#**global.set**(name: `string`, value: `ExpressionRef`): `ExpressionRef`<br /> Creates a global.set for the global with the specified name. #### [Integer operations](http://webassembly.org/docs/semantics/#32-bit-integer-operators) * Module#i32.**const**(value: `number`): `ExpressionRef` * Module#i32.**clz**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**ctz**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**popcnt**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**eqz**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**div_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**div_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**rem_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**rem_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**and**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**or**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**xor**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**shl**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**shr_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**shr_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**rotl**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**rotr**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**lt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**le_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**le_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**gt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**gt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**ge_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**ge_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` > * Module#i64.**const**(low: `number`, high: `number`): `ExpressionRef` * Module#i64.**clz**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**ctz**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**popcnt**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**eqz**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**div_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**div_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**rem_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**rem_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**and**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**or**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**xor**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**shl**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**shr_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**shr_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**rotl**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**rotr**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**lt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**le_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**le_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**gt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**gt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**ge_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**ge_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` #### [Floating point operations](http://webassembly.org/docs/semantics/#floating-point-operators) * Module#f32.**const**(value: `number`): `ExpressionRef` * Module#f32.**const_bits**(value: `number`): `ExpressionRef` * Module#f32.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**abs**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**ceil**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**floor**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**trunc**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**nearest**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**sqrt**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**div**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**copysign**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**min**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**max**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**lt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**le**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**gt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**ge**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` > * Module#f64.**const**(value: `number`): `ExpressionRef` * Module#f64.**const_bits**(value: `number`): `ExpressionRef` * Module#f64.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**abs**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**ceil**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**floor**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**trunc**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**nearest**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**sqrt**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**div**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**copysign**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**min**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**max**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**lt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**le**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**gt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**ge**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` #### [Datatype conversions](http://webassembly.org/docs/semantics/#datatype-conversions-truncations-reinterpretations-promotions-and-demotions) * Module#i32.**trunc_s.f32**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**trunc_s.f64**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**trunc_u.f32**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**trunc_u.f64**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**reinterpret**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**wrap**(value: `ExpressionRef`): `ExpressionRef` > * Module#i64.**trunc_s.f32**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**trunc_s.f64**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**trunc_u.f32**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**trunc_u.f64**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**reinterpret**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**extend_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**extend_u**(value: `ExpressionRef`): `ExpressionRef` > * Module#f32.**reinterpret**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**convert_s.i32**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**convert_s.i64**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**convert_u.i32**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**convert_u.i64**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**demote**(value: `ExpressionRef`): `ExpressionRef` > * Module#f64.**reinterpret**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**convert_s.i32**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**convert_s.i64**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**convert_u.i32**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**convert_u.i64**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**promote**(value: `ExpressionRef`): `ExpressionRef` #### [Function calls](http://webassembly.org/docs/semantics/#calls) * Module#**call**(name: `string`, operands: `ExpressionRef[]`, returnType: `Type`): `ExpressionRef` Creates a call to a function. Note that we must specify the return type here as we may not have created the function being called yet. * Module#**return_call**(name: `string`, operands: `ExpressionRef[]`, returnType: `Type`): `ExpressionRef`<br /> Like **call**, but creates a tail-call. 🦄 * Module#**call_indirect**(target: `ExpressionRef`, operands: `ExpressionRef[]`, params: `Type`, results: `Type`): `ExpressionRef`<br /> Similar to **call**, but calls indirectly, i.e., via a function pointer, so an expression replaces the name as the called value. * Module#**return_call_indirect**(target: `ExpressionRef`, operands: `ExpressionRef[]`, params: `Type`, results: `Type`): `ExpressionRef`<br /> Like **call_indirect**, but creates a tail-call. 🦄 #### [Linear memory accesses](http://webassembly.org/docs/semantics/#linear-memory-accesses) * Module#i32.**load**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**load8_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**load8_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**load16_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**load16_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**store**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**store8**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**store16**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef`<br /> > * Module#i64.**load**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load8_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load8_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load16_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load16_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load32_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load32_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**store**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**store8**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**store16**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**store32**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` > * Module#f32.**load**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#f32.**store**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` > * Module#f64.**load**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#f64.**store**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` #### [Host operations](http://webassembly.org/docs/semantics/#resizing) * Module#**memory.size**(): `ExpressionRef` * Module#**memory.grow**(value: `number`): `ExpressionRef` #### [Vector operations](https://github.com/WebAssembly/simd/blob/master/proposals/simd/SIMD.md) 🦄 * Module#v128.**const**(bytes: `Uint8Array`): `ExpressionRef` * Module#v128.**load**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#v128.**store**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#v128.**not**(value: `ExpressionRef`): `ExpressionRef` * Module#v128.**and**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#v128.**or**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#v128.**xor**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#v128.**andnot**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#v128.**bitselect**(left: `ExpressionRef`, right: `ExpressionRef`, cond: `ExpressionRef`): `ExpressionRef` > * Module#i8x16.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**extract_lane_s**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i8x16.**extract_lane_u**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i8x16.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**lt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**gt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**gt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**le_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**ge_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**ge_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**any_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**all_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**shl**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**shr_s**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**shr_u**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**add_saturate_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**add_saturate_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**sub_saturate_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**sub_saturate_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**min_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**min_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**max_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**max_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**avgr_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**narrow_i16x8_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**narrow_i16x8_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` > * Module#i16x8.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**extract_lane_s**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i16x8.**extract_lane_u**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i16x8.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**lt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**gt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**gt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**le_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**ge_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**ge_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**any_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**all_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**shl**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**shr_s**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**shr_u**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**add_saturate_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**add_saturate_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**sub_saturate_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**sub_saturate_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**min_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**min_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**max_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**max_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**avgr_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**narrow_i32x4_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**narrow_i32x4_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**widen_low_i8x16_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**widen_high_i8x16_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**widen_low_i8x16_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**widen_high_i8x16_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**load8x8_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**load8x8_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#i32x4.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**extract_lane_s**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i32x4.**extract_lane_u**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i32x4.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**lt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**gt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**gt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**le_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**ge_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**ge_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**any_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**all_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**shl**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**shr_s**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**shr_u**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**min_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**min_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**max_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**max_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**dot_i16x8_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**trunc_sat_f32x4_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**trunc_sat_f32x4_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**widen_low_i16x8_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**widen_high_i16x8_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**widen_low_i16x8_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**widen_high_i16x8_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**load16x4_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**load16x4_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#i64x2.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**extract_lane_s**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i64x2.**extract_lane_u**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i64x2.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**any_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**all_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**shl**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**shr_s**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**shr_u**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**trunc_sat_f64x2_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**trunc_sat_f64x2_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**load32x2_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**load32x2_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#f32x4.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**extract_lane**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#f32x4.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**lt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**gt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**le**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**ge**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**abs**(value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**sqrt**(value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**qfma**(a: `ExpressionRef`, b: `ExpressionRef`, c: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**qfms**(a: `ExpressionRef`, b: `ExpressionRef`, c: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**div**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**min**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**max**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**convert_i32x4_s**(value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**convert_i32x4_u**(value: `ExpressionRef`): `ExpressionRef` > * Module#f64x2.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**extract_lane**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#f64x2.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**lt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**gt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**le**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**ge**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**abs**(value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**sqrt**(value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**qfma**(a: `ExpressionRef`, b: `ExpressionRef`, c: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**qfms**(a: `ExpressionRef`, b: `ExpressionRef`, c: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**div**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**min**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**max**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**convert_i64x2_s**(value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**convert_i64x2_u**(value: `ExpressionRef`): `ExpressionRef` > * Module#v8x16.**shuffle**(left: `ExpressionRef`, right: `ExpressionRef`, mask: `Uint8Array`): `ExpressionRef` * Module#v8x16.**swizzle**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#v8x16.**load_splat**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#v16x8.**load_splat**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#v32x4.**load_splat**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#v64x2.**load_splat**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` #### [Atomic memory accesses](https://github.com/WebAssembly/threads/blob/master/proposals/threads/Overview.md#atomic-memory-accesses) 🦄 * Module#i32.**atomic.load**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.load8_u**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.load16_u**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.store**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.store8**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.store16**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` > * Module#i64.**atomic.load**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.load8_u**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.load16_u**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.load32_u**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.store**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.store8**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.store16**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.store32**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` #### [Atomic read-modify-write operations](https://github.com/WebAssembly/threads/blob/master/proposals/threads/Overview.md#read-modify-write) 🦄 * Module#i32.**atomic.rmw.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` > * Module#i64.**atomic.rmw.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` #### [Atomic wait and notify operations](https://github.com/WebAssembly/threads/blob/master/proposals/threads/Overview.md#wait-and-notify-operators) 🦄 * Module#i32.**atomic.wait**(ptr: `ExpressionRef`, expected: `ExpressionRef`, timeout: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.wait**(ptr: `ExpressionRef`, expected: `ExpressionRef`, timeout: `ExpressionRef`): `ExpressionRef` * Module#**atomic.notify**(ptr: `ExpressionRef`, notifyCount: `ExpressionRef`): `ExpressionRef` * Module#**atomic.fence**(): `ExpressionRef` #### [Sign extension operations](https://github.com/WebAssembly/sign-extension-ops/blob/master/proposals/sign-extension-ops/Overview.md) 🦄 * Module#i32.**extend8_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**extend16_s**(value: `ExpressionRef`): `ExpressionRef` > * Module#i64.**extend8_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**extend16_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**extend32_s**(value: `ExpressionRef`): `ExpressionRef` #### [Multi-value operations](https://github.com/WebAssembly/multi-value/blob/master/proposals/multi-value/Overview.md) 🦄 Note that these are pseudo instructions enabling Binaryen to reason about multiple values on the stack. * Module#**push**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**pop**(): `ExpressionRef` * Module#i64.**pop**(): `ExpressionRef` * Module#f32.**pop**(): `ExpressionRef` * Module#f64.**pop**(): `ExpressionRef` * Module#v128.**pop**(): `ExpressionRef` * Module#funcref.**pop**(): `ExpressionRef` * Module#anyref.**pop**(): `ExpressionRef` * Module#nullref.**pop**(): `ExpressionRef` * Module#exnref.**pop**(): `ExpressionRef` * Module#tuple.**make**(elements: `ExpressionRef[]`): `ExpressionRef` * Module#tuple.**extract**(tuple: `ExpressionRef`, index: `number`): `ExpressionRef` #### [Exception handling operations](https://github.com/WebAssembly/exception-handling/blob/master/proposals/Exceptions.md) 🦄 * Module#**try**(body: `ExpressionRef`, catchBody: `ExpressionRef`): `ExpressionRef` * Module#**throw**(event: `string`, operands: `ExpressionRef[]`): `ExpressionRef` * Module#**rethrow**(exnref: `ExpressionRef`): `ExpressionRef` * Module#**br_on_exn**(label: `string`, event: `string`, exnref: `ExpressionRef`): `ExpressionRef` > * Module#**addEvent**(name: `string`, attribute: `number`, params: `Type`, results: `Type`): `Event` * Module#**getEvent**(name: `string`): `Event` * Module#**removeEvent**(name: `stirng`): `void` * Module#**addEventImport**(internalName: `string`, externalModuleName: `string`, externalBaseName: `string`, attribute: `number`, params: `Type`, results: `Type`): `void` * Module#**addEventExport**(internalName: `string`, externalName: `string`): `ExportRef` #### [Reference types operations](https://github.com/WebAssembly/reference-types/blob/master/proposals/reference-types/Overview.md) 🦄 * Module#ref.**null**(): `ExpressionRef` * Module#ref.**is_null**(value: `ExpressionRef`): `ExpressionRef` * Module#ref.**func**(name: `string`): `ExpressionRef` ### Expression manipulation * **getExpressionId**(expr: `ExpressionRef`): `ExpressionId`<br /> Gets the id (kind) of the specified expression. Possible values are: * **InvalidId**: `ExpressionId` * **BlockId**: `ExpressionId` * **IfId**: `ExpressionId` * **LoopId**: `ExpressionId` * **BreakId**: `ExpressionId` * **SwitchId**: `ExpressionId` * **CallId**: `ExpressionId` * **CallIndirectId**: `ExpressionId` * **LocalGetId**: `ExpressionId` * **LocalSetId**: `ExpressionId` * **GlobalGetId**: `ExpressionId` * **GlobalSetId**: `ExpressionId` * **LoadId**: `ExpressionId` * **StoreId**: `ExpressionId` * **ConstId**: `ExpressionId` * **UnaryId**: `ExpressionId` * **BinaryId**: `ExpressionId` * **SelectId**: `ExpressionId` * **DropId**: `ExpressionId` * **ReturnId**: `ExpressionId` * **HostId**: `ExpressionId` * **NopId**: `ExpressionId` * **UnreachableId**: `ExpressionId` * **AtomicCmpxchgId**: `ExpressionId` * **AtomicRMWId**: `ExpressionId` * **AtomicWaitId**: `ExpressionId` * **AtomicNotifyId**: `ExpressionId` * **AtomicFenceId**: `ExpressionId` * **SIMDExtractId**: `ExpressionId` * **SIMDReplaceId**: `ExpressionId` * **SIMDShuffleId**: `ExpressionId` * **SIMDTernaryId**: `ExpressionId` * **SIMDShiftId**: `ExpressionId` * **SIMDLoadId**: `ExpressionId` * **MemoryInitId**: `ExpressionId` * **DataDropId**: `ExpressionId` * **MemoryCopyId**: `ExpressionId` * **MemoryFillId**: `ExpressionId` * **RefNullId**: `ExpressionId` * **RefIsNullId**: `ExpressionId` * **RefFuncId**: `ExpressionId` * **TryId**: `ExpressionId` * **ThrowId**: `ExpressionId` * **RethrowId**: `ExpressionId` * **BrOnExnId**: `ExpressionId` * **PushId**: `ExpressionId` * **PopId**: `ExpressionId` * **getExpressionType**(expr: `ExpressionRef`): `Type`<br /> Gets the type of the specified expression. * **getExpressionInfo**(expr: `ExpressionRef`): `ExpressionInfo`<br /> Obtains information about an expression, always including: * Info#**id**: `ExpressionId` * Info#**type**: `Type` Additional properties depend on the expression's `id` and are usually equivalent to the respective parameters when creating such an expression: * BlockInfo#**name**: `string` * BlockInfo#**children**: `ExpressionRef[]` > * IfInfo#**condition**: `ExpressionRef` * IfInfo#**ifTrue**: `ExpressionRef` * IfInfo#**ifFalse**: `ExpressionRef | null` > * LoopInfo#**name**: `string` * LoopInfo#**body**: `ExpressionRef` > * BreakInfo#**name**: `string` * BreakInfo#**condition**: `ExpressionRef | null` * BreakInfo#**value**: `ExpressionRef | null` > * SwitchInfo#**names**: `string[]` * SwitchInfo#**defaultName**: `string | null` * SwitchInfo#**condition**: `ExpressionRef` * SwitchInfo#**value**: `ExpressionRef | null` > * CallInfo#**target**: `string` * CallInfo#**operands**: `ExpressionRef[]` > * CallImportInfo#**target**: `string` * CallImportInfo#**operands**: `ExpressionRef[]` > * CallIndirectInfo#**target**: `ExpressionRef` * CallIndirectInfo#**operands**: `ExpressionRef[]` > * LocalGetInfo#**index**: `number` > * LocalSetInfo#**isTee**: `boolean` * LocalSetInfo#**index**: `number` * LocalSetInfo#**value**: `ExpressionRef` > * GlobalGetInfo#**name**: `string` > * GlobalSetInfo#**name**: `string` * GlobalSetInfo#**value**: `ExpressionRef` > * LoadInfo#**isAtomic**: `boolean` * LoadInfo#**isSigned**: `boolean` * LoadInfo#**offset**: `number` * LoadInfo#**bytes**: `number` * LoadInfo#**align**: `number` * LoadInfo#**ptr**: `ExpressionRef` > * StoreInfo#**isAtomic**: `boolean` * StoreInfo#**offset**: `number` * StoreInfo#**bytes**: `number` * StoreInfo#**align**: `number` * StoreInfo#**ptr**: `ExpressionRef` * StoreInfo#**value**: `ExpressionRef` > * ConstInfo#**value**: `number | { low: number, high: number }` > * UnaryInfo#**op**: `number` * UnaryInfo#**value**: `ExpressionRef` > * BinaryInfo#**op**: `number` * BinaryInfo#**left**: `ExpressionRef` * BinaryInfo#**right**: `ExpressionRef` > * SelectInfo#**ifTrue**: `ExpressionRef` * SelectInfo#**ifFalse**: `ExpressionRef` * SelectInfo#**condition**: `ExpressionRef` > * DropInfo#**value**: `ExpressionRef` > * ReturnInfo#**value**: `ExpressionRef | null` > * NopInfo > * UnreachableInfo > * HostInfo#**op**: `number` * HostInfo#**nameOperand**: `string | null` * HostInfo#**operands**: `ExpressionRef[]` > * AtomicRMWInfo#**op**: `number` * AtomicRMWInfo#**bytes**: `number` * AtomicRMWInfo#**offset**: `number` * AtomicRMWInfo#**ptr**: `ExpressionRef` * AtomicRMWInfo#**value**: `ExpressionRef` > * AtomicCmpxchgInfo#**bytes**: `number` * AtomicCmpxchgInfo#**offset**: `number` * AtomicCmpxchgInfo#**ptr**: `ExpressionRef` * AtomicCmpxchgInfo#**expected**: `ExpressionRef` * AtomicCmpxchgInfo#**replacement**: `ExpressionRef` > * AtomicWaitInfo#**ptr**: `ExpressionRef` * AtomicWaitInfo#**expected**: `ExpressionRef` * AtomicWaitInfo#**timeout**: `ExpressionRef` * AtomicWaitInfo#**expectedType**: `Type` > * AtomicNotifyInfo#**ptr**: `ExpressionRef` * AtomicNotifyInfo#**notifyCount**: `ExpressionRef` > * AtomicFenceInfo > * SIMDExtractInfo#**op**: `Op` * SIMDExtractInfo#**vec**: `ExpressionRef` * SIMDExtractInfo#**index**: `ExpressionRef` > * SIMDReplaceInfo#**op**: `Op` * SIMDReplaceInfo#**vec**: `ExpressionRef` * SIMDReplaceInfo#**index**: `ExpressionRef` * SIMDReplaceInfo#**value**: `ExpressionRef` > * SIMDShuffleInfo#**left**: `ExpressionRef` * SIMDShuffleInfo#**right**: `ExpressionRef` * SIMDShuffleInfo#**mask**: `Uint8Array` > * SIMDTernaryInfo#**op**: `Op` * SIMDTernaryInfo#**a**: `ExpressionRef` * SIMDTernaryInfo#**b**: `ExpressionRef` * SIMDTernaryInfo#**c**: `ExpressionRef` > * SIMDShiftInfo#**op**: `Op` * SIMDShiftInfo#**vec**: `ExpressionRef` * SIMDShiftInfo#**shift**: `ExpressionRef` > * SIMDLoadInfo#**op**: `Op` * SIMDLoadInfo#**offset**: `number` * SIMDLoadInfo#**align**: `number` * SIMDLoadInfo#**ptr**: `ExpressionRef` > * MemoryInitInfo#**segment**: `number` * MemoryInitInfo#**dest**: `ExpressionRef` * MemoryInitInfo#**offset**: `ExpressionRef` * MemoryInitInfo#**size**: `ExpressionRef` > * MemoryDropInfo#**segment**: `number` > * MemoryCopyInfo#**dest**: `ExpressionRef` * MemoryCopyInfo#**source**: `ExpressionRef` * MemoryCopyInfo#**size**: `ExpressionRef` > * MemoryFillInfo#**dest**: `ExpressionRef` * MemoryFillInfo#**value**: `ExpressionRef` * MemoryFillInfo#**size**: `ExpressionRef` > * TryInfo#**body**: `ExpressionRef` * TryInfo#**catchBody**: `ExpressionRef` > * RefNullInfo > * RefIsNullInfo#**value**: `ExpressionRef` > * RefFuncInfo#**func**: `string` > * ThrowInfo#**event**: `string` * ThrowInfo#**operands**: `ExpressionRef[]` > * RethrowInfo#**exnref**: `ExpressionRef` > * BrOnExnInfo#**name**: `string` * BrOnExnInfo#**event**: `string` * BrOnExnInfo#**exnref**: `ExpressionRef` > * PopInfo > * PushInfo#**value**: `ExpressionRef` * **emitText**(expression: `ExpressionRef`): `string`<br /> Emits the expression in Binaryen's s-expression text format (not official stack-style text format). * **copyExpression**(expression: `ExpressionRef`): `ExpressionRef`<br /> Creates a deep copy of an expression. ### Relooper * new **Relooper**()<br /> Constructs a relooper instance. This lets you provide an arbitrary CFG, and the relooper will structure it for WebAssembly. * Relooper#**addBlock**(code: `ExpressionRef`): `RelooperBlockRef`<br /> Adds a new block to the CFG, containing the provided code as its body. * Relooper#**addBranch**(from: `RelooperBlockRef`, to: `RelooperBlockRef`, condition: `ExpressionRef`, code: `ExpressionRef`): `void`<br /> Adds a branch from a block to another block, with a condition (or nothing, if this is the default branch to take from the origin - each block must have one such branch), and optional code to execute on the branch (useful for phis). * Relooper#**addBlockWithSwitch**(code: `ExpressionRef`, condition: `ExpressionRef`): `RelooperBlockRef`<br /> Adds a new block, which ends with a switch/br_table, with provided code and condition (that determines where we go in the switch). * Relooper#**addBranchForSwitch**(from: `RelooperBlockRef`, to: `RelooperBlockRef`, indexes: `number[]`, code: `ExpressionRef`): `void`<br /> Adds a branch from a block ending in a switch, to another block, using an array of indexes that determine where to go, and optional code to execute on the branch. * Relooper#**renderAndDispose**(entry: `RelooperBlockRef`, labelHelper: `number`, module: `Module`): `ExpressionRef`<br /> Renders and cleans up the Relooper instance. Call this after you have created all the blocks and branches, giving it the entry block (where control flow begins), a label helper variable (an index of a local we can use, necessary for irreducible control flow), and the module. This returns an expression - normal WebAssembly code - that you can use normally anywhere. ### Source maps * Module#**addDebugInfoFileName**(filename: `string`): `number`<br /> Adds a debug info file name to the module and returns its index. * Module#**getDebugInfoFileName**(index: `number`): `string | null` <br /> Gets the name of the debug info file at the specified index. * Module#**setDebugLocation**(func: `FunctionRef`, expr: `ExpressionRef`, fileIndex: `number`, lineNumber: `number`, columnNumber: `number`): `void`<br /> Sets the debug location of the specified `ExpressionRef` within the specified `FunctionRef`. ### Debugging * Module#**interpret**(): `void`<br /> Runs the module in the interpreter, calling the start function. [](https://travis-ci.org/#!/adaltas/node-csv-stringify) [](https://www.npmjs.com/package/csv-stringify) [](https://www.npmjs.com/package/csv-stringify) This package is a stringifier converting records into a CSV text and implementing the Node.js [`stream.Transform` API](https://nodejs.org/api/stream.html). It also provides the easier synchronous and callback-based APIs for conveniency. It is both extremely easy to use and powerful. It was first released in 2010 and is tested against big data sets by a large community. ## Documentation * [Project homepage](http://csv.js.org/stringify/) * [API](http://csv.js.org/stringify/api/) * [Options](http://csv.js.org/stringify/options/) * [Examples](http://csv.js.org/stringify/examples/) ## Main features * Follow the Node.js streaming API * Simplicity with the optional callback API * Support for custom formatters, delimiters, quotes, escape characters and header * Support big datasets * Complete test coverage and samples for inspiration * Only 1 external dependency * to be used conjointly with `csv-generate`, `csv-parse` and `stream-transform` * MIT License ## Usage The module is built on the Node.js Stream API. For the sake of simplicity, a simple callback API is also provided. To give you a quick look, here's an example of the callback API: ```javascript const stringify = require('csv-stringify') const assert = require('assert') // import stringify from 'csv-stringify' // import assert from 'assert/strict' const input = [ [ '1', '2', '3', '4' ], [ 'a', 'b', 'c', 'd' ] ] stringify(input, function(err, output) { const expected = '1,2,3,4\na,b,c,d\n' assert.strictEqual(output, expected, `output.should.eql ${expected}`) console.log("Passed.", output) }) ``` ## Development Tests are executed with mocha. To install it, run `npm install` followed by `npm test`. It will install mocha and its dependencies in your project "node_modules" directory and run the test suite. The tests run against the CoffeeScript source files. To generate the JavaScript files, run `npm run build`. The test suite is run online with [Travis](https://travis-ci.org/#!/adaltas/node-csv-stringify). See the [Travis definition file](https://github.com/adaltas/node-csv-stringify/blob/master/.travis.yml) to view the tested Node.js version. ## Contributors * David Worms: <https://github.com/wdavidw> [csv_home]: https://github.com/adaltas/node-csv [stream_transform]: http://nodejs.org/api/stream.html#stream_class_stream_transform [examples]: http://csv.js.org/stringify/examples/ [csv]: https://github.com/adaltas/node-csv ## assemblyscript-temporal An implementation of temporal within AssemblyScript, with an initial focus on non-timezone-aware classes and functionality. ### Why? AssemblyScript has minimal `Date` support, however, the JS Date API itself is terrible and people tend not to use it that often. As a result libraries like moment / luxon have become staple replacements. However, there is now a [relatively mature TC39 proposal](https://github.com/tc39/proposal-temporal) that adds greatly improved date support to JS. The goal of this project is to implement Temporal for AssemblyScript. ### Usage This library currently supports the following types: #### `PlainDateTime` A `PlainDateTime` represents a calendar date and wall-clock time that does not carry time zone information, e.g. December 7th, 1995 at 3:00 PM (in the Gregorian calendar). For detailed documentation see the [TC39 Temporal proposal website](https://tc39.es/proposal-temporal/docs/plaindatetime.html), this implementation follows the specification as closely as possible. You can create a `PlainDateTime` from individual components, a string or an object literal: ```javascript datetime = new PlainDateTime(1976, 11, 18, 15, 23, 30, 123, 456, 789); datetime.year; // 2019; datetime.month; // 11; // ... datetime.nanosecond; // 789; datetime = PlainDateTime.from("1976-11-18T12:34:56"); datetime.toString(); // "1976-11-18T12:34:56" datetime = PlainDateTime.from({ year: 1966, month: 3, day: 3 }); datetime.toString(); // "1966-03-03T00:00:00" ``` There are various ways you can manipulate a date: ```javascript // use 'with' to copy a date but with various property values overriden datetime = new PlainDateTime(1976, 11, 18, 15, 23, 30, 123, 456, 789); datetime.with({ year: 2019 }).toString(); // "2019-11-18T15:23:30.123456789" // use 'add' or 'substract' to add / subtract a duration datetime = PlainDateTime.from("2020-01-12T15:00"); datetime.add({ months: 1 }).toString(); // "2020-02-12T15:00:00"); // add / subtract support Duration objects or object literals datetime.add(new Duration(1)).toString(); // "2021-01-12T15:00:00"); ``` You can compare dates and check for equality ```javascript dt1 = PlainDateTime.from("1976-11-18"); dt2 = PlainDateTime.from("2019-10-29"); PlainDateTime.compare(dt1, dt1); // 0 PlainDateTime.compare(dt1, dt2); // -1 dt1.equals(dt1); // true ``` Currently `PlainDateTime` only supports the ISO 8601 (Gregorian) calendar. #### `PlainDate` A `PlainDate` object represents a calendar date that is not associated with a particular time or time zone, e.g. August 24th, 2006. For detailed documentation see the [TC39 Temporal proposal website](https://tc39.es/proposal-temporal/docs/plaindate.html), this implementation follows the specification as closely as possible. The `PlainDate` API is almost identical to `PlainDateTime`, so see above for API usage examples. #### `PlainTime` A `PlainTime` object represents a wall-clock time that is not associated with a particular date or time zone, e.g. 7:39 PM. For detailed documentation see the [TC39 Temporal proposal website](https://tc39.es/proposal-temporal/docs/plaintime.html), this implementation follows the specification as closely as possible. The `PlainTime` API is almost identical to `PlainDateTime`, so see above for API usage examples. #### `PlainMonthDay` A date without a year component. This is useful to express things like "Bastille Day is on the 14th of July". For detailed documentation see the [TC39 Temporal proposal website](https://tc39.es/proposal-temporal/docs/plainmonthday.html) , this implementation follows the specification as closely as possible. ```javascript const monthDay = PlainMonthDay.from({ month: 7, day: 14 }); // => 07-14 const date = monthDay.toPlainDate({ year: 2030 }); // => 2030-07-14 date.dayOfWeek; // => 7 ``` The `PlainMonthDay` API is almost identical to `PlainDateTime`, so see above for more API usage examples. #### `PlainYearMonth` A date without a day component. This is useful to express things like "the October 2020 meeting". For detailed documentation see the [TC39 Temporal proposal website](https://tc39.es/proposal-temporal/docs/plainyearmonth.html) , this implementation follows the specification as closely as possible. The `PlainYearMonth` API is almost identical to `PlainDateTime`, so see above for API usage examples. #### `now` The `now` object has several methods which give information about the current time and date. ```javascript dateTime = now.plainDateTimeISO(); dateTime.toString(); // 2021-04-01T12:05:47.357 ``` ## Contributing This project is open source, MIT licensed and your contributions are very much welcomed. There is a [brief document that outlines implementation progress and priorities](./development.md). # assemblyscript-regex A regex engine for AssemblyScript. [AssemblyScript](https://www.assemblyscript.org/) is a new language, based on TypeScript, that runs on WebAssembly. AssemblyScript has a lightweight standard library, but lacks support for Regular Expression. The project fills that gap! This project exposes an API that mirrors the JavaScript [RegExp](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp) class: ```javascript const regex = new RegExp("fo*", "g"); const str = "table football, foul"; let match: Match | null = regex.exec(str); while (match != null) { // first iteration // match.index = 6 // match.matches[0] = "foo" // second iteration // match.index = 16 // match.matches[0] = "fo" match = regex.exec(str); } ``` ## Project status The initial focus of this implementation has been feature support and functionality over performance. It currently supports a sufficient number of regex features to be considered useful, including most character classes, common assertions, groups, alternations, capturing groups and quantifiers. The next phase of development will focussed on more extensive testing and performance. The project currently has reasonable unit test coverage, focussed on positive and negative test cases on a per-feature basis. It also includes a more exhaustive test suite with test cases borrowed from another regex library. ### Feature support Based on the classfication within the [MDN cheatsheet](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions/Cheatsheet) **Character sets** - [x] . - [x] \d - [x] \D - [x] \w - [x] \W - [x] \s - [x] \S - [x] \t - [x] \r - [x] \n - [x] \v - [x] \f - [ ] [\b] - [ ] \0 - [ ] \cX - [x] \xhh - [x] \uhhhh - [ ] \u{hhhh} or \u{hhhhh} - [x] \ **Assertions** - [x] ^ - [x] $ - [ ] \b - [ ] \B **Other assertions** - [ ] x(?=y) Lookahead assertion - [ ] x(?!y) Negative lookahead assertion - [ ] (?<=y)x Lookbehind assertion - [ ] (?<!y)x Negative lookbehind assertion **Groups and ranges** - [x] x|y - [x] [xyz][a-c] - [x] [^xyz][^a-c] - [x] (x) capturing group - [ ] \n back reference - [ ] (?<Name>x) named capturing group - [x] (?:x) Non-capturing group **Quantifiers** - [x] x\* - [x] x+ - [x] x? - [x] x{n} - [x] x{n,} - [x] x{n,m} - [ ] x\*? / x+? / ... **RegExp** - [x] global - [ ] sticky - [x] case insensitive - [x] multiline - [x] dotAll - [ ] unicode ### Development This project is open source, MIT licenced and your contributions are very much welcomed. To get started, check out the repository and install dependencies: ``` $ npm install ``` A few general points about the tools and processes this project uses: - This project uses prettier for code formatting and eslint to provide additional syntactic checks. These are both run on `npm test` and as part of the CI build. - The unit tests are executed using [as-pect](https://github.com/jtenner/as-pect) - a native AssemblyScript test runner - The specification tests are within the `spec` folder. The `npm run test:generate` target transforms these tests into as-pect tests which execute as part of the standard build / test cycle - In order to support improved debugging you can execute this library as TypeScript (rather than WebAssembly), via the `npm run tsrun` target. # v8-compile-cache [](https://travis-ci.org/zertosh/v8-compile-cache) `v8-compile-cache` attaches a `require` hook to use [V8's code cache](https://v8project.blogspot.com/2015/07/code-caching.html) to speed up instantiation time. The "code cache" is the work of parsing and compiling done by V8. The ability to tap into V8 to produce/consume this cache was introduced in [Node v5.7.0](https://nodejs.org/en/blog/release/v5.7.0/). ## Usage 1. Add the dependency: ```sh $ npm install --save v8-compile-cache ``` 2. Then, in your entry module add: ```js require('v8-compile-cache'); ``` **Requiring `v8-compile-cache` in Node <5.7.0 is a noop – but you need at least Node 4.0.0 to support the ES2015 syntax used by `v8-compile-cache`.** ## Options Set the environment variable `DISABLE_V8_COMPILE_CACHE=1` to disable the cache. Cache directory is defined by environment variable `V8_COMPILE_CACHE_CACHE_DIR` or defaults to `<os.tmpdir()>/v8-compile-cache-<V8_VERSION>`. ## Internals Cache files are suffixed `.BLOB` and `.MAP` corresponding to the entry module that required `v8-compile-cache`. The cache is _entry module specific_ because it is faster to load the entire code cache into memory at once, than it is to read it from disk on a file-by-file basis. ## Benchmarks See https://github.com/zertosh/v8-compile-cache/tree/master/bench. **Load Times:** | Module | Without Cache | With Cache | | ---------------- | -------------:| ----------:| | `babel-core` | `218ms` | `185ms` | | `yarn` | `153ms` | `113ms` | | `yarn` (bundled) | `228ms` | `105ms` | _^ Includes the overhead of loading the cache itself._ ## Acknowledgements * `FileSystemBlobStore` and `NativeCompileCache` are based on Atom's implementation of their v8 compile cache: - https://github.com/atom/atom/blob/b0d7a8a/src/file-system-blob-store.js - https://github.com/atom/atom/blob/b0d7a8a/src/native-compile-cache.js * `mkdirpSync` is based on: - https://github.com/substack/node-mkdirp/blob/f2003bb/index.js#L55-L98 <p align="center"> <a href="http://gulpjs.com"> <img height="257" width="114" src="https://raw.githubusercontent.com/gulpjs/artwork/master/gulp-2x.png"> </a> </p> # interpret [![NPM version][npm-image]][npm-url] [![Downloads][downloads-image]][npm-url] [![Travis Build Status][travis-image]][travis-url] [![AppVeyor Build Status][appveyor-image]][appveyor-url] [![Coveralls Status][coveralls-image]][coveralls-url] [![Gitter chat][gitter-image]][gitter-url] A dictionary of file extensions and associated module loaders. ## What is it This is used by [Liftoff](http://github.com/tkellen/node-liftoff) to automatically require dependencies for configuration files, and by [rechoir](http://github.com/tkellen/node-rechoir) for registering module loaders. ## API ### extensions Map file types to modules which provide a [require.extensions] loader. ```js { '.babel.js': [ { module: '@babel/register', register: function(hook) { // register on .js extension due to https://github.com/joyent/node/blob/v0.12.0/lib/module.js#L353 // which only captures the final extension (.babel.js -> .js) hook({ extensions: '.js' }); }, }, { module: 'babel-register', register: function(hook) { hook({ extensions: '.js' }); }, }, { module: 'babel-core/register', register: function(hook) { hook({ extensions: '.js' }); }, }, { module: 'babel/register', register: function(hook) { hook({ extensions: '.js' }); }, }, ], '.babel.ts': [ { module: '@babel/register', register: function(hook) { hook({ extensions: '.ts' }); }, }, ], '.buble.js': 'buble/register', '.cirru': 'cirru-script/lib/register', '.cjsx': 'node-cjsx/register', '.co': 'coco', '.coffee': ['coffeescript/register', 'coffee-script/register', 'coffeescript', 'coffee-script'], '.coffee.md': ['coffeescript/register', 'coffee-script/register', 'coffeescript', 'coffee-script'], '.csv': 'require-csv', '.eg': 'earlgrey/register', '.esm.js': { module: 'esm', register: function(hook) { // register on .js extension due to https://github.com/joyent/node/blob/v0.12.0/lib/module.js#L353 // which only captures the final extension (.babel.js -> .js) var esmLoader = hook(module); require.extensions['.js'] = esmLoader('module')._extensions['.js']; }, }, '.iced': ['iced-coffee-script/register', 'iced-coffee-script'], '.iced.md': 'iced-coffee-script/register', '.ini': 'require-ini', '.js': null, '.json': null, '.json5': 'json5/lib/require', '.jsx': [ { module: '@babel/register', register: function(hook) { hook({ extensions: '.jsx' }); }, }, { module: 'babel-register', register: function(hook) { hook({ extensions: '.jsx' }); }, }, { module: 'babel-core/register', register: function(hook) { hook({ extensions: '.jsx' }); }, }, { module: 'babel/register', register: function(hook) { hook({ extensions: '.jsx' }); }, }, { module: 'node-jsx', register: function(hook) { hook.install({ extension: '.jsx', harmony: true }); }, }, ], '.litcoffee': ['coffeescript/register', 'coffee-script/register', 'coffeescript', 'coffee-script'], '.liticed': 'iced-coffee-script/register', '.ls': ['livescript', 'LiveScript'], '.mjs': '/absolute/path/to/interpret/mjs-stub.js', '.node': null, '.toml': { module: 'toml-require', register: function(hook) { hook.install(); }, }, '.ts': [ 'ts-node/register', 'typescript-node/register', 'typescript-register', 'typescript-require', 'sucrase/register/ts', { module: '@babel/register', register: function(hook) { hook({ extensions: '.ts' }); }, }, ], '.tsx': [ 'ts-node/register', 'typescript-node/register', 'sucrase/register', { module: '@babel/register', register: function(hook) { hook({ extensions: '.tsx' }); }, }, ], '.wisp': 'wisp/engine/node', '.xml': 'require-xml', '.yaml': 'require-yaml', '.yml': 'require-yaml', } ``` ### jsVariants Same as above, but only include the extensions which are javascript variants. ## How to use it Consumers should use the exported `extensions` or `jsVariants` object to determine which module should be loaded for a given extension. If a matching extension is found, consumers should do the following: 1. If the value is null, do nothing. 2. If the value is a string, try to require it. 3. If the value is an object, try to require the `module` property. If successful, the `register` property (a function) should be called with the module passed as the first argument. 4. If the value is an array, iterate over it, attempting step #2 or #3 until one of the attempts does not throw. [require.extensions]: http://nodejs.org/api/globals.html#globals_require_extensions [downloads-image]: http://img.shields.io/npm/dm/interpret.svg [npm-url]: https://www.npmjs.com/package/interpret [npm-image]: http://img.shields.io/npm/v/interpret.svg [travis-url]: https://travis-ci.org/gulpjs/interpret [travis-image]: http://img.shields.io/travis/gulpjs/interpret.svg?label=travis-ci [appveyor-url]: https://ci.appveyor.com/project/gulpjs/interpret [appveyor-image]: https://img.shields.io/appveyor/ci/gulpjs/interpret.svg?label=appveyor [coveralls-url]: https://coveralls.io/r/gulpjs/interpret [coveralls-image]: http://img.shields.io/coveralls/gulpjs/interpret/master.svg [gitter-url]: https://gitter.im/gulpjs/gulp [gitter-image]: https://badges.gitter.im/gulpjs/gulp.svg # isexe Minimal module to check if a file is executable, and a normal file. Uses `fs.stat` and tests against the `PATHEXT` environment variable on Windows. ## USAGE ```javascript var isexe = require('isexe') isexe('some-file-name', function (err, isExe) { if (err) { console.error('probably file does not exist or something', err) } else if (isExe) { console.error('this thing can be run') } else { console.error('cannot be run') } }) // same thing but synchronous, throws errors var isExe = isexe.sync('some-file-name') // treat errors as just "not executable" isexe('maybe-missing-file', { ignoreErrors: true }, callback) var isExe = isexe.sync('maybe-missing-file', { ignoreErrors: true }) ``` ## API ### `isexe(path, [options], [callback])` Check if the path is executable. If no callback provided, and a global `Promise` object is available, then a Promise will be returned. Will raise whatever errors may be raised by `fs.stat`, unless `options.ignoreErrors` is set to true. ### `isexe.sync(path, [options])` Same as `isexe` but returns the value and throws any errors raised. ### Options * `ignoreErrors` Treat all errors as "no, this is not executable", but don't raise them. * `uid` Number to use as the user id * `gid` Number to use as the group id * `pathExt` List of path extensions to use instead of `PATHEXT` environment variable on Windows. # color-convert [](https://travis-ci.org/Qix-/color-convert) Color-convert is a color conversion library for JavaScript and node. It converts all ways between `rgb`, `hsl`, `hsv`, `hwb`, `cmyk`, `ansi`, `ansi16`, `hex` strings, and CSS `keyword`s (will round to closest): ```js var convert = require('color-convert'); convert.rgb.hsl(140, 200, 100); // [96, 48, 59] convert.keyword.rgb('blue'); // [0, 0, 255] var rgbChannels = convert.rgb.channels; // 3 var cmykChannels = convert.cmyk.channels; // 4 var ansiChannels = convert.ansi16.channels; // 1 ``` # Install ```console $ npm install color-convert ``` # API Simply get the property of the _from_ and _to_ conversion that you're looking for. All functions have a rounded and unrounded variant. By default, return values are rounded. To get the unrounded (raw) results, simply tack on `.raw` to the function. All 'from' functions have a hidden property called `.channels` that indicates the number of channels the function expects (not including alpha). ```js var convert = require('color-convert'); // Hex to LAB convert.hex.lab('DEADBF'); // [ 76, 21, -2 ] convert.hex.lab.raw('DEADBF'); // [ 75.56213190997677, 20.653827952644754, -2.290532499330533 ] // RGB to CMYK convert.rgb.cmyk(167, 255, 4); // [ 35, 0, 98, 0 ] convert.rgb.cmyk.raw(167, 255, 4); // [ 34.509803921568626, 0, 98.43137254901961, 0 ] ``` ### Arrays All functions that accept multiple arguments also support passing an array. Note that this does **not** apply to functions that convert from a color that only requires one value (e.g. `keyword`, `ansi256`, `hex`, etc.) ```js var convert = require('color-convert'); convert.rgb.hex(123, 45, 67); // '7B2D43' convert.rgb.hex([123, 45, 67]); // '7B2D43' ``` ## Routing Conversions that don't have an _explicitly_ defined conversion (in [conversions.js](conversions.js)), but can be converted by means of sub-conversions (e.g. XYZ -> **RGB** -> CMYK), are automatically routed together. This allows just about any color model supported by `color-convert` to be converted to any other model, so long as a sub-conversion path exists. This is also true for conversions requiring more than one step in between (e.g. LCH -> **LAB** -> **XYZ** -> **RGB** -> Hex). Keep in mind that extensive conversions _may_ result in a loss of precision, and exist only to be complete. For a list of "direct" (single-step) conversions, see [conversions.js](conversions.js). # Contribute If there is a new model you would like to support, or want to add a direct conversion between two existing models, please send us a pull request. # License Copyright &copy; 2011-2016, Heather Arthur and Josh Junon. Licensed under the [MIT License](LICENSE). The AssemblyScript Runtime ========================== The runtime provides the functionality necessary to dynamically allocate and deallocate memory of objects, arrays and buffers, as well as collect garbage that is no longer used. The current implementation is either a Two-Color Mark & Sweep (TCMS) garbage collector that must be called manually when the execution stack is unwound or an Incremental Tri-Color Mark & Sweep (ITCMS) garbage collector that is fully automated with a shadow stack, implemented on top of a Two-Level Segregate Fit (TLSF) memory manager. It's not designed to be the fastest of its kind, but intentionally focuses on simplicity and ease of integration until we can replace it with the real deal, i.e. Wasm GC. Interface --------- ### Garbage collector / `--exportRuntime` * **__new**(size: `usize`, id: `u32` = 0): `usize`<br /> Dynamically allocates a GC object of at least the specified size and returns its address. Alignment is guaranteed to be 16 bytes to fit up to v128 values naturally. GC-allocated objects cannot be used with `__realloc` and `__free`. * **__pin**(ptr: `usize`): `usize`<br /> Pins the object pointed to by `ptr` externally so it and its directly reachable members and indirectly reachable objects do not become garbage collected. * **__unpin**(ptr: `usize`): `void`<br /> Unpins the object pointed to by `ptr` externally so it can become garbage collected. * **__collect**(): `void`<br /> Performs a full garbage collection. ### Internals * **__alloc**(size: `usize`): `usize`<br /> Dynamically allocates a chunk of memory of at least the specified size and returns its address. Alignment is guaranteed to be 16 bytes to fit up to v128 values naturally. * **__realloc**(ptr: `usize`, size: `usize`): `usize`<br /> Dynamically changes the size of a chunk of memory, possibly moving it to a new address. * **__free**(ptr: `usize`): `void`<br /> Frees a dynamically allocated chunk of memory by its address. * **__renew**(ptr: `usize`, size: `usize`): `usize`<br /> Like `__realloc`, but for `__new`ed GC objects. * **__link**(parentPtr: `usize`, childPtr: `usize`, expectMultiple: `bool`): `void`<br /> Introduces a link from a parent object to a child object, i.e. upon `parent.field = child`. * **__visit**(ptr: `usize`, cookie: `u32`): `void`<br /> Concrete visitor implementation called during traversal. Cookie can be used to indicate one of multiple operations. * **__visit_globals**(cookie: `u32`): `void`<br /> Calls `__visit` on each global that is of a managed type. * **__visit_members**(ptr: `usize`, cookie: `u32`): `void`<br /> Calls `__visit` on each member of the object pointed to by `ptr`. * **__typeinfo**(id: `u32`): `RTTIFlags`<br /> Obtains the runtime type information for objects with the specified runtime id. Runtime type information is a set of flags indicating whether a type is managed, an array or similar, and what the relevant alignments when creating an instance externally are etc. * **__instanceof**(ptr: `usize`, classId: `u32`): `bool`<br /> Tests if the object pointed to by `ptr` is an instance of the specified class id. ITCMS / `--runtime incremental` ----- The Incremental Tri-Color Mark & Sweep garbage collector maintains a separate shadow stack of managed values in the background to achieve full automation. Maintaining another stack introduces some overhead compared to the simpler Two-Color Mark & Sweep garbage collector, but makes it independent of whether the execution stack is unwound or not when it is invoked, so the garbage collector can run interleaved with the program. There are several constants one can experiment with to tweak ITCMS's automation: * `--use ASC_GC_GRANULARITY=1024`<br /> How often to interrupt. The default of 1024 means "interrupt each 1024 bytes allocated". * `--use ASC_GC_STEPFACTOR=200`<br /> How long to interrupt. The default of 200% means "run at double the speed of allocations". * `--use ASC_GC_IDLEFACTOR=200`<br /> How long to idle. The default of 200% means "wait for memory to double before kicking in again". * `--use ASC_GC_MARKCOST=1`<br /> How costly it is to mark one object. Budget per interrupt is `GRANULARITY * STEPFACTOR / 100`. * `--use ASC_GC_SWEEPCOST=10`<br /> How costly it is to sweep one object. Budget per interrupt is `GRANULARITY * STEPFACTOR / 100`. TCMS / `--runtime minimal` ---- If automation and low pause times aren't strictly necessary, using the Two-Color Mark & Sweep garbage collector instead by invoking collection manually at appropriate times when the execution stack is unwound may be more performant as it simpler and has less overhead. The execution stack is typically unwound when invoking the collector externally, at a place that is not indirectly called from Wasm. STUB / `--runtime stub` ---- The stub is a maximally minimal runtime substitute, consisting of a simple and fast bump allocator with no means of freeing up memory again, except when freeing the respective most recently allocated object on top of the bump. Useful where memory is not a concern, and/or where it is sufficient to destroy the whole module including any potential garbage after execution. See also: [Garbage collection](https://www.assemblyscript.org/garbage-collection.html) # axios // adapters The modules under `adapters/` are modules that handle dispatching a request and settling a returned `Promise` once a response is received. ## Example ```js var settle = require('./../core/settle'); module.exports = function myAdapter(config) { // At this point: // - config has been merged with defaults // - request transformers have already run // - request interceptors have already run // Make the request using config provided // Upon response settle the Promise return new Promise(function(resolve, reject) { var response = { data: responseData, status: request.status, statusText: request.statusText, headers: responseHeaders, config: config, request: request }; settle(resolve, reject, response); // From here: // - response transformers will run // - response interceptors will run }); } ``` # ts-mixer [version-badge]: https://badgen.net/npm/v/ts-mixer [version-link]: https://npmjs.com/package/ts-mixer [build-badge]: https://img.shields.io/github/workflow/status/tannerntannern/ts-mixer/ts-mixer%20CI [build-link]: https://github.com/tannerntannern/ts-mixer/actions [ts-versions]: https://badgen.net/badge/icon/3.8,3.9,4.0,4.1,4.2?icon=typescript&label&list=| [node-versions]: https://badgen.net/badge/node/10%2C12%2C14/blue/?list=| [![npm version][version-badge]][version-link] [![github actions][build-badge]][build-link] [![TS Versions][ts-versions]][build-link] [![Node.js Versions][node-versions]][build-link] [](https://bundlephobia.com/result?p=ts-mixer) [](https://conventionalcommits.org) ## Overview `ts-mixer` brings mixins to TypeScript. "Mixins" to `ts-mixer` are just classes, so you already know how to write them, and you can probably mix classes from your favorite library without trouble. The mixin problem is more nuanced than it appears. I've seen countless code snippets that work for certain situations, but fail in others. `ts-mixer` tries to take the best from all these solutions while accounting for the situations you might not have considered. [Quick start guide](#quick-start) ### Features * mixes plain classes * mixes classes that extend other classes * mixes classes that were mixed with `ts-mixer` * supports static properties * supports protected/private properties (the popular function-that-returns-a-class solution does not) * mixes abstract classes (with caveats [[1](#caveats)]) * mixes generic classes (with caveats [[2](#caveats)]) * supports class, method, and property decorators (with caveats [[3, 6](#caveats)]) * mostly supports the complexity presented by constructor functions (with caveats [[4](#caveats)]) * comes with an `instanceof`-like replacement (with caveats [[5, 6](#caveats)]) * [multiple mixing strategies](#settings) (ES6 proxies vs hard copy) ### Caveats 1. Mixing abstract classes requires a bit of a hack that may break in future versions of TypeScript. See [mixing abstract classes](#mixing-abstract-classes) below. 2. Mixing generic classes requires a more cumbersome notation, but it's still possible. See [mixing generic classes](#mixing-generic-classes) below. 3. Using decorators in mixed classes also requires a more cumbersome notation. See [mixing with decorators](#mixing-with-decorators) below. 4. ES6 made it impossible to use `.apply(...)` on class constructors (or any means of calling them without `new`), which makes it impossible for `ts-mixer` to pass the proper `this` to your constructors. This may or may not be an issue for your code, but there are options to work around it. See [dealing with constructors](#dealing-with-constructors) below. 5. `ts-mixer` does not support `instanceof` for mixins, but it does offer a replacement. See the [hasMixin function](#hasmixin) for more details. 6. Certain features (specifically, `@decorator` and `hasMixin`) make use of ES6 `Map`s, which means you must either use ES6+ or polyfill `Map` to use them. If you don't need these features, you should be fine without. ## Quick Start ### Installation ``` $ npm install ts-mixer ``` or if you prefer [Yarn](https://yarnpkg.com): ``` $ yarn add ts-mixer ``` ### Basic Example ```typescript import { Mixin } from 'ts-mixer'; class Foo { protected makeFoo() { return 'foo'; } } class Bar { protected makeBar() { return 'bar'; } } class FooBar extends Mixin(Foo, Bar) { public makeFooBar() { return this.makeFoo() + this.makeBar(); } } const fooBar = new FooBar(); console.log(fooBar.makeFooBar()); // "foobar" ``` ## Special Cases ### Mixing Abstract Classes Abstract classes, by definition, cannot be constructed, which means they cannot take on the type, `new(...args) => any`, and by extension, are incompatible with `ts-mixer`. BUT, you can "trick" TypeScript into giving you all the benefits of an abstract class without making it technically abstract. The trick is just some strategic `// @ts-ignore`'s: ```typescript import { Mixin } from 'ts-mixer'; // note that Foo is not marked as an abstract class class Foo { // @ts-ignore: "Abstract methods can only appear within an abstract class" public abstract makeFoo(): string; } class Bar { public makeBar() { return 'bar'; } } class FooBar extends Mixin(Foo, Bar) { // we still get all the benefits of abstract classes here, because TypeScript // will still complain if this method isn't implemented public makeFoo() { return 'foo'; } } ``` Do note that while this does work quite well, it is a bit of a hack and I can't promise that it will continue to work in future TypeScript versions. ### Mixing Generic Classes Frustratingly, it is _impossible_ for generic parameters to be referenced in base class expressions. No matter what, you will eventually run into `Base class expressions cannot reference class type parameters.` The way to get around this is to leverage [declaration merging](https://www.typescriptlang.org/docs/handbook/declaration-merging.html), and a slightly different mixing function from ts-mixer: `mix`. It works exactly like `Mixin`, except it's a decorator, which means it doesn't affect the type information of the class being decorated. See it in action below: ```typescript import { mix } from 'ts-mixer'; class Foo<T> { public fooMethod(input: T): T { return input; } } class Bar<T> { public barMethod(input: T): T { return input; } } interface FooBar<T1, T2> extends Foo<T1>, Bar<T2> { } @mix(Foo, Bar) class FooBar<T1, T2> { public fooBarMethod(input1: T1, input2: T2) { return [this.fooMethod(input1), this.barMethod(input2)]; } } ``` Key takeaways from this example: * `interface FooBar<T1, T2> extends Foo<T1>, Bar<T2> { }` makes sure `FooBar` has the typing we want, thanks to declaration merging * `@mix(Foo, Bar)` wires things up "on the JavaScript side", since the interface declaration has nothing to do with runtime behavior. * The reason we have to use the `mix` decorator is that the typing produced by `Mixin(Foo, Bar)` would conflict with the typing of the interface. `mix` has no effect "on the TypeScript side," thus avoiding type conflicts. ### Mixing with Decorators Popular libraries such as [class-validator](https://github.com/typestack/class-validator) and [TypeORM](https://github.com/typeorm/typeorm) use decorators to add functionality. Unfortunately, `ts-mixer` has no way of knowing what these libraries do with the decorators behind the scenes. So if you want these decorators to be "inherited" with classes you plan to mix, you first have to wrap them with a special `decorate` function exported by `ts-mixer`. Here's an example using `class-validator`: ```typescript import { IsBoolean, IsIn, validate } from 'class-validator'; import { Mixin, decorate } from 'ts-mixer'; class Disposable { @decorate(IsBoolean()) // instead of @IsBoolean() isDisposed: boolean = false; } class Statusable { @decorate(IsIn(['red', 'green'])) // instead of @IsIn(['red', 'green']) status: string = 'green'; } class ExtendedObject extends Mixin(Disposable, Statusable) {} const extendedObject = new ExtendedObject(); extendedObject.status = 'blue'; validate(extendedObject).then(errors => { console.log(errors); }); ``` ### Dealing with Constructors As mentioned in the [caveats section](#caveats), ES6 disallowed calling constructor functions without `new`. This means that the only way for `ts-mixer` to mix instance properties is to instantiate each base class separately, then copy the instance properties into a common object. The consequence of this is that constructors mixed by `ts-mixer` will _not_ receive the proper `this`. **This very well may not be an issue for you!** It only means that your constructors need to be "mostly pure" in terms of how they handle `this`. Specifically, your constructors cannot produce [side effects](https://en.wikipedia.org/wiki/Side_effect_%28computer_science%29) involving `this`, _other than adding properties to `this`_ (the most common side effect in JavaScript constructors). If you simply cannot eliminate `this` side effects from your constructor, there is a workaround available: `ts-mixer` will automatically forward constructor parameters to a predesignated init function (`settings.initFunction`) if it's present on the class. Unlike constructors, functions can be called with an arbitrary `this`, so this predesignated init function _will_ have the proper `this`. Here's a basic example: ```typescript import { Mixin, settings } from 'ts-mixer'; settings.initFunction = 'init'; class Person { public static allPeople: Set<Person> = new Set(); protected init() { Person.allPeople.add(this); } } type PartyAffiliation = 'democrat' | 'republican'; class PoliticalParticipant { public static democrats: Set<PoliticalParticipant> = new Set(); public static republicans: Set<PoliticalParticipant> = new Set(); public party: PartyAffiliation; // note that these same args will also be passed to init function public constructor(party: PartyAffiliation) { this.party = party; } protected init(party: PartyAffiliation) { if (party === 'democrat') PoliticalParticipant.democrats.add(this); else PoliticalParticipant.republicans.add(this); } } class Voter extends Mixin(Person, PoliticalParticipant) {} const v1 = new Voter('democrat'); const v2 = new Voter('democrat'); const v3 = new Voter('republican'); const v4 = new Voter('republican'); ``` Note the above `.add(this)` statements. These would not work as expected if they were placed in the constructor instead, since `this` is not the same between the constructor and `init`, as explained above. ## Other Features ### hasMixin As mentioned above, `ts-mixer` does not support `instanceof` for mixins. While it is possible to implement [custom `instanceof` behavior](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol/hasInstance), this library does not do so because it would require modifying the source classes, which is deliberately avoided. You can fill this missing functionality with `hasMixin(instance, mixinClass)` instead. See the below example: ```typescript import { Mixin, hasMixin } from 'ts-mixer'; class Foo {} class Bar {} class FooBar extends Mixin(Foo, Bar) {} const instance = new FooBar(); // doesn't work with instanceof... console.log(instance instanceof FooBar) // true console.log(instance instanceof Foo) // false console.log(instance instanceof Bar) // false // but everything works nicely with hasMixin! console.log(hasMixin(instance, FooBar)) // true console.log(hasMixin(instance, Foo)) // true console.log(hasMixin(instance, Bar)) // true ``` `hasMixin(instance, mixinClass)` will work anywhere that `instance instanceof mixinClass` works. Additionally, like `instanceof`, you get the same [type narrowing benefits](https://www.typescriptlang.org/docs/handbook/advanced-types.html#instanceof-type-guards): ```typescript if (hasMixin(instance, Foo)) { // inferred type of instance is "Foo" } if (hasMixin(instance, Bar)) { // inferred type of instance of "Bar" } ``` ## Settings ts-mixer has multiple strategies for mixing classes which can be configured by modifying `settings` from ts-mixer. For example: ```typescript import { settings, Mixin } from 'ts-mixer'; settings.prototypeStrategy = 'proxy'; // then use `Mixin` as normal... ``` ### `settings.prototypeStrategy` * Determines how ts-mixer will mix class prototypes together * Possible values: - `'copy'` (default) - Copies all methods from the classes being mixed into a new prototype object. (This will include all methods up the prototype chains as well.) This is the default for ES5 compatibility, but it has the downside of stale references. For example, if you mix `Foo` and `Bar` to make `FooBar`, then redefine a method on `Foo`, `FooBar` will not have the latest methods from `Foo`. If this is not a concern for you, `'copy'` is the best value for this setting. - `'proxy'` - Uses an ES6 Proxy to "soft mix" prototypes. Unlike `'copy'`, updates to the base classes _will_ be reflected in the mixed class, which may be desirable. The downside is that method access is not as performant, nor is it ES5 compatible. ### `settings.staticsStrategy` * Determines how static properties are inherited * Possible values: - `'copy'` (default) - Simply copies all properties (minus `prototype`) from the base classes/constructor functions onto the mixed class. Like `settings.prototypeStrategy = 'copy'`, this strategy also suffers from stale references, but shouldn't be a concern if you don't redefine static methods after mixing. - `'proxy'` - Similar to `settings.prototypeStrategy`, proxy's static method access to base classes. Has the same benefits/downsides. ### `settings.initFunction` * If set, `ts-mixer` will automatically call the function with this name upon construction * Possible values: - `null` (default) - disables the behavior - a string - function name to call upon construction * Read more about why you would want this in [dealing with constructors](#dealing-with-constructors) ### `settings.decoratorInheritance` * Determines how decorators are inherited from classes passed to `Mixin(...)` * Possible values: - `'deep'` (default) - Deeply inherits decorators from all given classes and their ancestors - `'direct'` - Only inherits decorators defined directly on the given classes - `'none'` - Skips decorator inheritance # Author Tanner Nielsen <tannerntannern@gmail.com> * Website - [tannernielsen.com](http://tannernielsen.com) * Github - [tannerntannern](https://github.com/tannerntannern) # get-caller-file [](https://travis-ci.org/stefanpenner/get-caller-file) [](https://ci.appveyor.com/project/embercli/get-caller-file/branch/master) This is a utility, which allows a function to figure out from which file it was invoked. It does so by inspecting v8's stack trace at the time it is invoked. Inspired by http://stackoverflow.com/questions/13227489 *note: this relies on Node/V8 specific APIs, as such other runtimes may not work* ## Installation ```bash yarn add get-caller-file ``` ## Usage Given: ```js // ./foo.js const getCallerFile = require('get-caller-file'); module.exports = function() { return getCallerFile(); // figures out who called it }; ``` ```js // index.js const foo = require('./foo'); foo() // => /full/path/to/this/file/index.js ``` ## Options: * `getCallerFile(position = 2)`: where position is stack frame whos fileName we want. # jsdiff [](http://travis-ci.org/kpdecker/jsdiff) [](https://saucelabs.com/u/jsdiff) A javascript text differencing implementation. Based on the algorithm proposed in ["An O(ND) Difference Algorithm and its Variations" (Myers, 1986)](http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.4.6927). ## Installation ```bash npm install diff --save ``` ## API * `Diff.diffChars(oldStr, newStr[, options])` - diffs two blocks of text, comparing character by character. Returns a list of change objects (See below). Options * `ignoreCase`: `true` to ignore casing difference. Defaults to `false`. * `Diff.diffWords(oldStr, newStr[, options])` - diffs two blocks of text, comparing word by word, ignoring whitespace. Returns a list of change objects (See below). Options * `ignoreCase`: Same as in `diffChars`. * `Diff.diffWordsWithSpace(oldStr, newStr[, options])` - diffs two blocks of text, comparing word by word, treating whitespace as significant. Returns a list of change objects (See below). * `Diff.diffLines(oldStr, newStr[, options])` - diffs two blocks of text, comparing line by line. Options * `ignoreWhitespace`: `true` to ignore leading and trailing whitespace. This is the same as `diffTrimmedLines` * `newlineIsToken`: `true` to treat newline characters as separate tokens. This allows for changes to the newline structure to occur independently of the line content and to be treated as such. In general this is the more human friendly form of `diffLines` and `diffLines` is better suited for patches and other computer friendly output. Returns a list of change objects (See below). * `Diff.diffTrimmedLines(oldStr, newStr[, options])` - diffs two blocks of text, comparing line by line, ignoring leading and trailing whitespace. Returns a list of change objects (See below). * `Diff.diffSentences(oldStr, newStr[, options])` - diffs two blocks of text, comparing sentence by sentence. Returns a list of change objects (See below). * `Diff.diffCss(oldStr, newStr[, options])` - diffs two blocks of text, comparing CSS tokens. Returns a list of change objects (See below). * `Diff.diffJson(oldObj, newObj[, options])` - diffs two JSON objects, comparing the fields defined on each. The order of fields, etc does not matter in this comparison. Returns a list of change objects (See below). * `Diff.diffArrays(oldArr, newArr[, options])` - diffs two arrays, comparing each item for strict equality (===). Options * `comparator`: `function(left, right)` for custom equality checks Returns a list of change objects (See below). * `Diff.createTwoFilesPatch(oldFileName, newFileName, oldStr, newStr, oldHeader, newHeader)` - creates a unified diff patch. Parameters: * `oldFileName` : String to be output in the filename section of the patch for the removals * `newFileName` : String to be output in the filename section of the patch for the additions * `oldStr` : Original string value * `newStr` : New string value * `oldHeader` : Additional information to include in the old file header * `newHeader` : Additional information to include in the new file header * `options` : An object with options. Currently, only `context` is supported and describes how many lines of context should be included. * `Diff.createPatch(fileName, oldStr, newStr, oldHeader, newHeader)` - creates a unified diff patch. Just like Diff.createTwoFilesPatch, but with oldFileName being equal to newFileName. * `Diff.structuredPatch(oldFileName, newFileName, oldStr, newStr, oldHeader, newHeader, options)` - returns an object with an array of hunk objects. This method is similar to createTwoFilesPatch, but returns a data structure suitable for further processing. Parameters are the same as createTwoFilesPatch. The data structure returned may look like this: ```js { oldFileName: 'oldfile', newFileName: 'newfile', oldHeader: 'header1', newHeader: 'header2', hunks: [{ oldStart: 1, oldLines: 3, newStart: 1, newLines: 3, lines: [' line2', ' line3', '-line4', '+line5', '\\ No newline at end of file'], }] } ``` * `Diff.applyPatch(source, patch[, options])` - applies a unified diff patch. Return a string containing new version of provided data. `patch` may be a string diff or the output from the `parsePatch` or `structuredPatch` methods. The optional `options` object may have the following keys: - `fuzzFactor`: Number of lines that are allowed to differ before rejecting a patch. Defaults to 0. - `compareLine(lineNumber, line, operation, patchContent)`: Callback used to compare to given lines to determine if they should be considered equal when patching. Defaults to strict equality but may be overridden to provide fuzzier comparison. Should return false if the lines should be rejected. * `Diff.applyPatches(patch, options)` - applies one or more patches. This method will iterate over the contents of the patch and apply to data provided through callbacks. The general flow for each patch index is: - `options.loadFile(index, callback)` is called. The caller should then load the contents of the file and then pass that to the `callback(err, data)` callback. Passing an `err` will terminate further patch execution. - `options.patched(index, content, callback)` is called once the patch has been applied. `content` will be the return value from `applyPatch`. When it's ready, the caller should call `callback(err)` callback. Passing an `err` will terminate further patch execution. Once all patches have been applied or an error occurs, the `options.complete(err)` callback is made. * `Diff.parsePatch(diffStr)` - Parses a patch into structured data Return a JSON object representation of the a patch, suitable for use with the `applyPatch` method. This parses to the same structure returned by `Diff.structuredPatch`. * `convertChangesToXML(changes)` - converts a list of changes to a serialized XML format All methods above which accept the optional `callback` method will run in sync mode when that parameter is omitted and in async mode when supplied. This allows for larger diffs without blocking the event loop. This may be passed either directly as the final parameter or as the `callback` field in the `options` object. ### Change Objects Many of the methods above return change objects. These objects consist of the following fields: * `value`: Text content * `added`: True if the value was inserted into the new string * `removed`: True if the value was removed from the old string Note that some cases may omit a particular flag field. Comparison on the flag fields should always be done in a truthy or falsy manner. ## Examples Basic example in Node ```js require('colors'); const Diff = require('diff'); const one = 'beep boop'; const other = 'beep boob blah'; const diff = Diff.diffChars(one, other); diff.forEach((part) => { // green for additions, red for deletions // grey for common parts const color = part.added ? 'green' : part.removed ? 'red' : 'grey'; process.stderr.write(part.value[color]); }); console.log(); ``` Running the above program should yield <img src="images/node_example.png" alt="Node Example"> Basic example in a web page ```html <pre id="display"></pre> <script src="diff.js"></script> <script> const one = 'beep boop', other = 'beep boob blah', color = ''; let span = null; const diff = Diff.diffChars(one, other), display = document.getElementById('display'), fragment = document.createDocumentFragment(); diff.forEach((part) => { // green for additions, red for deletions // grey for common parts const color = part.added ? 'green' : part.removed ? 'red' : 'grey'; span = document.createElement('span'); span.style.color = color; span.appendChild(document .createTextNode(part.value)); fragment.appendChild(span); }); display.appendChild(fragment); </script> ``` Open the above .html file in a browser and you should see <img src="images/web_example.png" alt="Node Example"> **[Full online demo](http://kpdecker.github.com/jsdiff)** ## Compatibility [](https://saucelabs.com/u/jsdiff) jsdiff supports all ES3 environments with some known issues on IE8 and below. Under these browsers some diff algorithms such as word diff and others may fail due to lack of support for capturing groups in the `split` operation. ## License See [LICENSE](https://github.com/kpdecker/jsdiff/blob/master/LICENSE). # eslint-utils [](https://www.npmjs.com/package/eslint-utils) [](http://www.npmtrends.com/eslint-utils) [](https://github.com/mysticatea/eslint-utils/actions) [](https://codecov.io/gh/mysticatea/eslint-utils) [](https://david-dm.org/mysticatea/eslint-utils) ## 🏁 Goal This package provides utility functions and classes for make ESLint custom rules. For examples: - [getStaticValue](https://eslint-utils.mysticatea.dev/api/ast-utils.html#getstaticvalue) evaluates static value on AST. - [ReferenceTracker](https://eslint-utils.mysticatea.dev/api/scope-utils.html#referencetracker-class) checks the members of modules/globals as handling assignments and destructuring. ## 📖 Usage See [documentation](https://eslint-utils.mysticatea.dev/). ## 📰 Changelog See [releases](https://github.com/mysticatea/eslint-utils/releases). ## ❤️ Contributing Welcome contributing! Please use GitHub's Issues/PRs. ### Development Tools - `npm test` runs tests and measures coverage. - `npm run clean` removes the coverage result of `npm test` command. - `npm run coverage` shows the coverage result of the last `npm test` command. - `npm run lint` runs ESLint. - `npm run watch` runs tests on each file change. discontinuous-range =================== ``` DiscontinuousRange(1, 10).subtract(4, 6); // [ 1-3, 7-10 ] ``` [](https://travis-ci.org/dtudury/discontinuous-range) this is a pretty simple module, but it exists to service another project so this'll be pretty lacking documentation. reading the test to see how this works may help. otherwise, here's an example that I think pretty much sums it up ###Example ``` var all_numbers = new DiscontinuousRange(1, 100); var bad_numbers = DiscontinuousRange(13).add(8).add(60,80); var good_numbers = all_numbers.clone().subtract(bad_numbers); console.log(good_numbers.toString()); //[ 1-7, 9-12, 14-59, 81-100 ] var random_good_number = good_numbers.index(Math.floor(Math.random() * good_numbers.length)); ``` # axios // core The modules found in `core/` should be modules that are specific to the domain logic of axios. These modules would most likely not make sense to be consumed outside of the axios module, as their logic is too specific. Some examples of core modules are: - Dispatching requests - Managing interceptors - Handling config # cliui  [](https://www.npmjs.com/package/cliui) [](https://conventionalcommits.org)  easily create complex multi-column command-line-interfaces. ## Example ```js const ui = require('cliui')() ui.div('Usage: $0 [command] [options]') ui.div({ text: 'Options:', padding: [2, 0, 1, 0] }) ui.div( { text: "-f, --file", width: 20, padding: [0, 4, 0, 4] }, { text: "the file to load." + chalk.green("(if this description is long it wraps).") , width: 20 }, { text: chalk.red("[required]"), align: 'right' } ) console.log(ui.toString()) ``` ## Deno/ESM Support As of `v7` `cliui` supports [Deno](https://github.com/denoland/deno) and [ESM](https://nodejs.org/api/esm.html#esm_ecmascript_modules): ```typescript import cliui from "https://deno.land/x/cliui/deno.ts"; const ui = cliui({}) ui.div('Usage: $0 [command] [options]') ui.div({ text: 'Options:', padding: [2, 0, 1, 0] }) ui.div({ text: "-f, --file", width: 20, padding: [0, 4, 0, 4] }) console.log(ui.toString()) ``` <img width="500" src="screenshot.png"> ## Layout DSL cliui exposes a simple layout DSL: If you create a single `ui.div`, passing a string rather than an object: * `\n`: characters will be interpreted as new rows. * `\t`: characters will be interpreted as new columns. * `\s`: characters will be interpreted as padding. **as an example...** ```js var ui = require('./')({ width: 60 }) ui.div( 'Usage: node ./bin/foo.js\n' + ' <regex>\t provide a regex\n' + ' <glob>\t provide a glob\t [required]' ) console.log(ui.toString()) ``` **will output:** ```shell Usage: node ./bin/foo.js <regex> provide a regex <glob> provide a glob [required] ``` ## Methods ```js cliui = require('cliui') ``` ### cliui({width: integer}) Specify the maximum width of the UI being generated. If no width is provided, cliui will try to get the current window's width and use it, and if that doesn't work, width will be set to `80`. ### cliui({wrap: boolean}) Enable or disable the wrapping of text in a column. ### cliui.div(column, column, column) Create a row with any number of columns, a column can either be a string, or an object with the following options: * **text:** some text to place in the column. * **width:** the width of a column. * **align:** alignment, `right` or `center`. * **padding:** `[top, right, bottom, left]`. * **border:** should a border be placed around the div? ### cliui.span(column, column, column) Similar to `div`, except the next row will be appended without a new line being created. ### cliui.resetOutput() Resets the UI elements of the current cliui instance, maintaining the values set for `width` and `wrap`. <p align="center"> <a href="https://assemblyscript.org" target="_blank" rel="noopener"><img width="100" src="https://avatars1.githubusercontent.com/u/28916798?s=200&v=4" alt="AssemblyScript logo"></a> </p> <p align="center"> <a href="https://github.com/AssemblyScript/assemblyscript/actions?query=workflow%3ATest"><img src="https://img.shields.io/github/workflow/status/AssemblyScript/assemblyscript/Test/master?label=test&logo=github" alt="Test status" /></a> <a href="https://github.com/AssemblyScript/assemblyscript/actions?query=workflow%3APublish"><img src="https://img.shields.io/github/workflow/status/AssemblyScript/assemblyscript/Publish/master?label=publish&logo=github" alt="Publish status" /></a> <a href="https://www.npmjs.com/package/assemblyscript"><img src="https://img.shields.io/npm/v/assemblyscript.svg?label=compiler&color=007acc&logo=npm" alt="npm compiler version" /></a> <a href="https://www.npmjs.com/package/@assemblyscript/loader"><img src="https://img.shields.io/npm/v/@assemblyscript/loader.svg?label=loader&color=007acc&logo=npm" alt="npm loader version" /></a> <a href="https://discord.gg/assemblyscript"><img src="https://img.shields.io/discord/721472913886281818.svg?label=&logo=discord&logoColor=ffffff&color=7389D8&labelColor=6A7EC2" alt="Discord online" /></a> </p> <p align="justify"><strong>AssemblyScript</strong> compiles a strict variant of <a href="http://www.typescriptlang.org">TypeScript</a> (basically JavaScript with types) to <a href="http://webassembly.org">WebAssembly</a> using <a href="https://github.com/WebAssembly/binaryen">Binaryen</a>. It generates lean and mean WebAssembly modules while being just an <code>npm install</code> away.</p> <h3 align="center"> <a href="https://assemblyscript.org">About</a> &nbsp;·&nbsp; <a href="https://assemblyscript.org/introduction.html">Introduction</a> &nbsp;·&nbsp; <a href="https://assemblyscript.org/quick-start.html">Quick&nbsp;start</a> &nbsp;·&nbsp; <a href="https://assemblyscript.org/examples.html">Examples</a> &nbsp;·&nbsp; <a href="https://assemblyscript.org/development.html">Development&nbsp;instructions</a> </h3> <br> <h2 align="center">Contributors</h2> <p align="center"> <a href="https://assemblyscript.org/#contributors"><img src="https://assemblyscript.org/contributors.svg" alt="Contributor logos" width="720" /></a> </p> <h2 align="center">Thanks to our sponsors!</h2> <p align="justify">Most of the core team members and most contributors do this open source work in their free time. If you use AssemblyScript for a serious task or plan to do so, and you'd like us to invest more time on it, <a href="https://opencollective.com/assemblyscript/donate" target="_blank" rel="noopener">please donate</a> to our <a href="https://opencollective.com/assemblyscript" target="_blank" rel="noopener">OpenCollective</a>. By sponsoring this project, your logo will show up below. Thank you so much for your support!</p> <p align="center"> <a href="https://assemblyscript.org/#sponsors"><img src="https://assemblyscript.org/sponsors.svg" alt="Sponsor logos" width="720" /></a> </p> # Web IDL Type Conversions on JavaScript Values This package implements, in JavaScript, the algorithms to convert a given JavaScript value according to a given [Web IDL](http://heycam.github.io/webidl/) [type](http://heycam.github.io/webidl/#idl-types). The goal is that you should be able to write code like ```js "use strict"; const conversions = require("webidl-conversions"); function doStuff(x, y) { x = conversions["boolean"](x); y = conversions["unsigned long"](y); // actual algorithm code here } ``` and your function `doStuff` will behave the same as a Web IDL operation declared as ```webidl void doStuff(boolean x, unsigned long y); ``` ## API This package's main module's default export is an object with a variety of methods, each corresponding to a different Web IDL type. Each method, when invoked on a JavaScript value, will give back the new JavaScript value that results after passing through the Web IDL conversion rules. (See below for more details on what that means.) Alternately, the method could throw an error, if the Web IDL algorithm is specified to do so: for example `conversions["float"](NaN)` [will throw a `TypeError`](http://heycam.github.io/webidl/#es-float). Each method also accepts a second, optional, parameter for miscellaneous options. For conversion methods that throw errors, a string option `{ context }` may be provided to provide more information in the error message. (For example, `conversions["float"](NaN, { context: "Argument 1 of Interface's operation" })` will throw an error with message `"Argument 1 of Interface's operation is not a finite floating-point value."`) Specific conversions may also accept other options, the details of which can be found below. ## Conversions implemented Conversions for all of the basic types from the Web IDL specification are implemented: - [`any`](https://heycam.github.io/webidl/#es-any) - [`void`](https://heycam.github.io/webidl/#es-void) - [`boolean`](https://heycam.github.io/webidl/#es-boolean) - [Integer types](https://heycam.github.io/webidl/#es-integer-types), which can additionally be provided the boolean options `{ clamp, enforceRange }` as a second parameter - [`float`](https://heycam.github.io/webidl/#es-float), [`unrestricted float`](https://heycam.github.io/webidl/#es-unrestricted-float) - [`double`](https://heycam.github.io/webidl/#es-double), [`unrestricted double`](https://heycam.github.io/webidl/#es-unrestricted-double) - [`DOMString`](https://heycam.github.io/webidl/#es-DOMString), which can additionally be provided the boolean option `{ treatNullAsEmptyString }` as a second parameter - [`ByteString`](https://heycam.github.io/webidl/#es-ByteString), [`USVString`](https://heycam.github.io/webidl/#es-USVString) - [`object`](https://heycam.github.io/webidl/#es-object) - [`Error`](https://heycam.github.io/webidl/#es-Error) - [Buffer source types](https://heycam.github.io/webidl/#es-buffer-source-types) Additionally, for convenience, the following derived type definitions are implemented: - [`ArrayBufferView`](https://heycam.github.io/webidl/#ArrayBufferView) - [`BufferSource`](https://heycam.github.io/webidl/#BufferSource) - [`DOMTimeStamp`](https://heycam.github.io/webidl/#DOMTimeStamp) - [`Function`](https://heycam.github.io/webidl/#Function) - [`VoidFunction`](https://heycam.github.io/webidl/#VoidFunction) (although it will not censor the return type) Derived types, such as nullable types, promise types, sequences, records, etc. are not handled by this library. You may wish to investigate the [webidl2js](https://github.com/jsdom/webidl2js) project. ### A note on the `long long` types The `long long` and `unsigned long long` Web IDL types can hold values that cannot be stored in JavaScript numbers, so the conversion is imperfect. For example, converting the JavaScript number `18446744073709552000` to a Web IDL `long long` is supposed to produce the Web IDL value `-18446744073709551232`. Since we are representing our Web IDL values in JavaScript, we can't represent `-18446744073709551232`, so we instead the best we could do is `-18446744073709552000` as the output. This library actually doesn't even get that far. Producing those results would require doing accurate modular arithmetic on 64-bit intermediate values, but JavaScript does not make this easy. We could pull in a big-integer library as a dependency, but in lieu of that, we for now have decided to just produce inaccurate results if you pass in numbers that are not strictly between `Number.MIN_SAFE_INTEGER` and `Number.MAX_SAFE_INTEGER`. ## Background What's actually going on here, conceptually, is pretty weird. Let's try to explain. Web IDL, as part of its madness-inducing design, has its own type system. When people write algorithms in web platform specs, they usually operate on Web IDL values, i.e. instances of Web IDL types. For example, if they were specifying the algorithm for our `doStuff` operation above, they would treat `x` as a Web IDL value of [Web IDL type `boolean`](http://heycam.github.io/webidl/#idl-boolean). Crucially, they would _not_ treat `x` as a JavaScript variable whose value is either the JavaScript `true` or `false`. They're instead working in a different type system altogether, with its own rules. Separately from its type system, Web IDL defines a ["binding"](http://heycam.github.io/webidl/#ecmascript-binding) of the type system into JavaScript. This contains rules like: when you pass a JavaScript value to the JavaScript method that manifests a given Web IDL operation, how does that get converted into a Web IDL value? For example, a JavaScript `true` passed in the position of a Web IDL `boolean` argument becomes a Web IDL `true`. But, a JavaScript `true` passed in the position of a [Web IDL `unsigned long`](http://heycam.github.io/webidl/#idl-unsigned-long) becomes a Web IDL `1`. And so on. Finally, we have the actual implementation code. This is usually C++, although these days [some smart people are using Rust](https://github.com/servo/servo). The implementation, of course, has its own type system. So when they implement the Web IDL algorithms, they don't actually use Web IDL values, since those aren't "real" outside of specs. Instead, implementations apply the Web IDL binding rules in such a way as to convert incoming JavaScript values into C++ values. For example, if code in the browser called `doStuff(true, true)`, then the implementation code would eventually receive a C++ `bool` containing `true` and a C++ `uint32_t` containing `1`. The upside of all this is that implementations can abstract all the conversion logic away, letting Web IDL handle it, and focus on implementing the relevant methods in C++ with values of the correct type already provided. That is payoff of Web IDL, in a nutshell. And getting to that payoff is the goal of _this_ project—but for JavaScript implementations, instead of C++ ones. That is, this library is designed to make it easier for JavaScript developers to write functions that behave like a given Web IDL operation. So conceptually, the conversion pipeline, which in its general form is JavaScript values ↦ Web IDL values ↦ implementation-language values, in this case becomes JavaScript values ↦ Web IDL values ↦ JavaScript values. And that intermediate step is where all the logic is performed: a JavaScript `true` becomes a Web IDL `1` in an unsigned long context, which then becomes a JavaScript `1`. ## Don't use this Seriously, why would you ever use this? You really shouldn't. Web IDL is … strange, and you shouldn't be emulating its semantics. If you're looking for a generic argument-processing library, you should find one with better rules than those from Web IDL. In general, your JavaScript should not be trying to become more like Web IDL; if anything, we should fix Web IDL to make it more like JavaScript. The _only_ people who should use this are those trying to create faithful implementations (or polyfills) of web platform interfaces defined in Web IDL. Its main consumer is the [jsdom](https://github.com/tmpvar/jsdom) project. functional-red-black-tree ========================= A [fully persistent](http://en.wikipedia.org/wiki/Persistent_data_structure) [red-black tree](http://en.wikipedia.org/wiki/Red%E2%80%93black_tree) written 100% in JavaScript. Works both in node.js and in the browser via [browserify](http://browserify.org/). Functional (or fully presistent) data structures allow for non-destructive updates. So if you insert an element into the tree, it returns a new tree with the inserted element rather than destructively updating the existing tree in place. Doing this requires using extra memory, and if one were naive it could cost as much as reallocating the entire tree. Instead, this data structure saves some memory by recycling references to previously allocated subtrees. This requires using only O(log(n)) additional memory per update instead of a full O(n) copy. Some advantages of this is that it is possible to apply insertions and removals to the tree while still iterating over previous versions of the tree. Functional and persistent data structures can also be useful in many geometric algorithms like point location within triangulations or ray queries, and can be used to analyze the history of executing various algorithms. This added power though comes at a cost, since it is generally a bit slower to use a functional data structure than an imperative version. However, if your application needs this behavior then you may consider using this module. # Install npm install functional-red-black-tree # Example Here is an example of some basic usage: ```javascript //Load the library var createTree = require("functional-red-black-tree") //Create a tree var t1 = createTree() //Insert some items into the tree var t2 = t1.insert(1, "foo") var t3 = t2.insert(2, "bar") //Remove something var t4 = t3.remove(1) ``` # API ```javascript var createTree = require("functional-red-black-tree") ``` ## Overview - [Tree methods](#tree-methods) - [`var tree = createTree([compare])`](#var-tree-=-createtreecompare) - [`tree.keys`](#treekeys) - [`tree.values`](#treevalues) - [`tree.length`](#treelength) - [`tree.get(key)`](#treegetkey) - [`tree.insert(key, value)`](#treeinsertkey-value) - [`tree.remove(key)`](#treeremovekey) - [`tree.find(key)`](#treefindkey) - [`tree.ge(key)`](#treegekey) - [`tree.gt(key)`](#treegtkey) - [`tree.lt(key)`](#treeltkey) - [`tree.le(key)`](#treelekey) - [`tree.at(position)`](#treeatposition) - [`tree.begin`](#treebegin) - [`tree.end`](#treeend) - [`tree.forEach(visitor(key,value)[, lo[, hi]])`](#treeforEachvisitorkeyvalue-lo-hi) - [`tree.root`](#treeroot) - [Node properties](#node-properties) - [`node.key`](#nodekey) - [`node.value`](#nodevalue) - [`node.left`](#nodeleft) - [`node.right`](#noderight) - [Iterator methods](#iterator-methods) - [`iter.key`](#iterkey) - [`iter.value`](#itervalue) - [`iter.node`](#iternode) - [`iter.tree`](#itertree) - [`iter.index`](#iterindex) - [`iter.valid`](#itervalid) - [`iter.clone()`](#iterclone) - [`iter.remove()`](#iterremove) - [`iter.update(value)`](#iterupdatevalue) - [`iter.next()`](#iternext) - [`iter.prev()`](#iterprev) - [`iter.hasNext`](#iterhasnext) - [`iter.hasPrev`](#iterhasprev) ## Tree methods ### `var tree = createTree([compare])` Creates an empty functional tree * `compare` is an optional comparison function, same semantics as array.sort() **Returns** An empty tree ordered by `compare` ### `tree.keys` A sorted array of all the keys in the tree ### `tree.values` An array array of all the values in the tree ### `tree.length` The number of items in the tree ### `tree.get(key)` Retrieves the value associated to the given key * `key` is the key of the item to look up **Returns** The value of the first node associated to `key` ### `tree.insert(key, value)` Creates a new tree with the new pair inserted. * `key` is the key of the item to insert * `value` is the value of the item to insert **Returns** A new tree with `key` and `value` inserted ### `tree.remove(key)` Removes the first item with `key` in the tree * `key` is the key of the item to remove **Returns** A new tree with the given item removed if it exists ### `tree.find(key)` Returns an iterator pointing to the first item in the tree with `key`, otherwise `null`. ### `tree.ge(key)` Find the first item in the tree whose key is `>= key` * `key` is the key to search for **Returns** An iterator at the given element. ### `tree.gt(key)` Finds the first item in the tree whose key is `> key` * `key` is the key to search for **Returns** An iterator at the given element ### `tree.lt(key)` Finds the last item in the tree whose key is `< key` * `key` is the key to search for **Returns** An iterator at the given element ### `tree.le(key)` Finds the last item in the tree whose key is `<= key` * `key` is the key to search for **Returns** An iterator at the given element ### `tree.at(position)` Finds an iterator starting at the given element * `position` is the index at which the iterator gets created **Returns** An iterator starting at position ### `tree.begin` An iterator pointing to the first element in the tree ### `tree.end` An iterator pointing to the last element in the tree ### `tree.forEach(visitor(key,value)[, lo[, hi]])` Walks a visitor function over the nodes of the tree in order. * `visitor(key,value)` is a callback that gets executed on each node. If a truthy value is returned from the visitor, then iteration is stopped. * `lo` is an optional start of the range to visit (inclusive) * `hi` is an optional end of the range to visit (non-inclusive) **Returns** The last value returned by the callback ### `tree.root` Returns the root node of the tree ## Node properties Each node of the tree has the following properties: ### `node.key` The key associated to the node ### `node.value` The value associated to the node ### `node.left` The left subtree of the node ### `node.right` The right subtree of the node ## Iterator methods ### `iter.key` The key of the item referenced by the iterator ### `iter.value` The value of the item referenced by the iterator ### `iter.node` The value of the node at the iterator's current position. `null` is iterator is node valid. ### `iter.tree` The tree associated to the iterator ### `iter.index` Returns the position of this iterator in the sequence. ### `iter.valid` Checks if the iterator is valid ### `iter.clone()` Makes a copy of the iterator ### `iter.remove()` Removes the item at the position of the iterator **Returns** A new binary search tree with `iter`'s item removed ### `iter.update(value)` Updates the value of the node in the tree at this iterator **Returns** A new binary search tree with the corresponding node updated ### `iter.next()` Advances the iterator to the next position ### `iter.prev()` Moves the iterator backward one element ### `iter.hasNext` If true, then the iterator is not at the end of the sequence ### `iter.hasPrev` If true, then the iterator is not at the beginning of the sequence # Credits (c) 2013 Mikola Lysenko. MIT License Overview [](https://travis-ci.org/lydell/js-tokens) ======== A regex that tokenizes JavaScript. ```js var jsTokens = require("js-tokens").default var jsString = "var foo=opts.foo;\n..." jsString.match(jsTokens) // ["var", " ", "foo", "=", "opts", ".", "foo", ";", "\n", ...] ``` Installation ============ `npm install js-tokens` ```js import jsTokens from "js-tokens" // or: var jsTokens = require("js-tokens").default ``` Usage ===== ### `jsTokens` ### A regex with the `g` flag that matches JavaScript tokens. The regex _always_ matches, even invalid JavaScript and the empty string. The next match is always directly after the previous. ### `var token = matchToToken(match)` ### ```js import {matchToToken} from "js-tokens" // or: var matchToToken = require("js-tokens").matchToToken ``` Takes a `match` returned by `jsTokens.exec(string)`, and returns a `{type: String, value: String}` object. The following types are available: - string - comment - regex - number - name - punctuator - whitespace - invalid Multi-line comments and strings also have a `closed` property indicating if the token was closed or not (see below). Comments and strings both come in several flavors. To distinguish them, check if the token starts with `//`, `/*`, `'`, `"` or `` ` ``. Names are ECMAScript IdentifierNames, that is, including both identifiers and keywords. You may use [is-keyword-js] to tell them apart. Whitespace includes both line terminators and other whitespace. [is-keyword-js]: https://github.com/crissdev/is-keyword-js ECMAScript support ================== The intention is to always support the latest ECMAScript version whose feature set has been finalized. If adding support for a newer version requires changes, a new version with a major verion bump will be released. Currently, ECMAScript 2018 is supported. Invalid code handling ===================== Unterminated strings are still matched as strings. JavaScript strings cannot contain (unescaped) newlines, so unterminated strings simply end at the end of the line. Unterminated template strings can contain unescaped newlines, though, so they go on to the end of input. Unterminated multi-line comments are also still matched as comments. They simply go on to the end of the input. Unterminated regex literals are likely matched as division and whatever is inside the regex. Invalid ASCII characters have their own capturing group. Invalid non-ASCII characters are treated as names, to simplify the matching of names (except unicode spaces which are treated as whitespace). Note: See also the [ES2018](#es2018) section. Regex literals may contain invalid regex syntax. They are still matched as regex literals. They may also contain repeated regex flags, to keep the regex simple. Strings may contain invalid escape sequences. Limitations =========== Tokenizing JavaScript using regexes—in fact, _one single regex_—won’t be perfect. But that’s not the point either. You may compare jsTokens with [esprima] by using `esprima-compare.js`. See `npm run esprima-compare`! [esprima]: http://esprima.org/ ### Template string interpolation ### Template strings are matched as single tokens, from the starting `` ` `` to the ending `` ` ``, including interpolations (whose tokens are not matched individually). Matching template string interpolations requires recursive balancing of `{` and `}`—something that JavaScript regexes cannot do. Only one level of nesting is supported. ### Division and regex literals collision ### Consider this example: ```js var g = 9.82 var number = bar / 2/g var regex = / 2/g ``` A human can easily understand that in the `number` line we’re dealing with division, and in the `regex` line we’re dealing with a regex literal. How come? Because humans can look at the whole code to put the `/` characters in context. A JavaScript regex cannot. It only sees forwards. (Well, ES2018 regexes can also look backwards. See the [ES2018](#es2018) section). When the `jsTokens` regex scans throught the above, it will see the following at the end of both the `number` and `regex` rows: ```js / 2/g ``` It is then impossible to know if that is a regex literal, or part of an expression dealing with division. Here is a similar case: ```js foo /= 2/g foo(/= 2/g) ``` The first line divides the `foo` variable with `2/g`. The second line calls the `foo` function with the regex literal `/= 2/g`. Again, since `jsTokens` only sees forwards, it cannot tell the two cases apart. There are some cases where we _can_ tell division and regex literals apart, though. First off, we have the simple cases where there’s only one slash in the line: ```js var foo = 2/g foo /= 2 ``` Regex literals cannot contain newlines, so the above cases are correctly identified as division. Things are only problematic when there are more than one non-comment slash in a single line. Secondly, not every character is a valid regex flag. ```js var number = bar / 2/e ``` The above example is also correctly identified as division, because `e` is not a valid regex flag. I initially wanted to future-proof by allowing `[a-zA-Z]*` (any letter) as flags, but it is not worth it since it increases the amount of ambigous cases. So only the standard `g`, `m`, `i`, `y` and `u` flags are allowed. This means that the above example will be identified as division as long as you don’t rename the `e` variable to some permutation of `gmiyus` 1 to 6 characters long. Lastly, we can look _forward_ for information. - If the token following what looks like a regex literal is not valid after a regex literal, but is valid in a division expression, then the regex literal is treated as division instead. For example, a flagless regex cannot be followed by a string, number or name, but all of those three can be the denominator of a division. - Generally, if what looks like a regex literal is followed by an operator, the regex literal is treated as division instead. This is because regexes are seldomly used with operators (such as `+`, `*`, `&&` and `==`), but division could likely be part of such an expression. Please consult the regex source and the test cases for precise information on when regex or division is matched (should you need to know). In short, you could sum it up as: If the end of a statement looks like a regex literal (even if it isn’t), it will be treated as one. Otherwise it should work as expected (if you write sane code). ### ES2018 ### ES2018 added some nice regex improvements to the language. - [Unicode property escapes] should allow telling names and invalid non-ASCII characters apart without blowing up the regex size. - [Lookbehind assertions] should allow matching telling division and regex literals apart in more cases. - [Named capture groups] might simplify some things. These things would be nice to do, but are not critical. They probably have to wait until the oldest maintained Node.js LTS release supports those features. [Unicode property escapes]: http://2ality.com/2017/07/regexp-unicode-property-escapes.html [Lookbehind assertions]: http://2ality.com/2017/05/regexp-lookbehind-assertions.html [Named capture groups]: http://2ality.com/2017/05/regexp-named-capture-groups.html License ======= [MIT](LICENSE). # eslint-visitor-keys [](https://www.npmjs.com/package/eslint-visitor-keys) [](http://www.npmtrends.com/eslint-visitor-keys) [](https://travis-ci.org/eslint/eslint-visitor-keys) [](https://david-dm.org/eslint/eslint-visitor-keys) Constants and utilities about visitor keys to traverse AST. ## 💿 Installation Use [npm] to install. ```bash $ npm install eslint-visitor-keys ``` ### Requirements - [Node.js] 4.0.0 or later. ## 📖 Usage ```js const evk = require("eslint-visitor-keys") ``` ### evk.KEYS > type: `{ [type: string]: string[] | undefined }` Visitor keys. This keys are frozen. This is an object. Keys are the type of [ESTree] nodes. Their values are an array of property names which have child nodes. For example: ``` console.log(evk.KEYS.AssignmentExpression) // → ["left", "right"] ``` ### evk.getKeys(node) > type: `(node: object) => string[]` Get the visitor keys of a given AST node. This is similar to `Object.keys(node)` of ES Standard, but some keys are excluded: `parent`, `leadingComments`, `trailingComments`, and names which start with `_`. This will be used to traverse unknown nodes. For example: ``` const node = { type: "AssignmentExpression", left: { type: "Identifier", name: "foo" }, right: { type: "Literal", value: 0 } } console.log(evk.getKeys(node)) // → ["type", "left", "right"] ``` ### evk.unionWith(additionalKeys) > type: `(additionalKeys: object) => { [type: string]: string[] | undefined }` Make the union set with `evk.KEYS` and the given keys. - The order of keys is, `additionalKeys` is at first, then `evk.KEYS` is concatenated after that. - It removes duplicated keys as keeping the first one. For example: ``` console.log(evk.unionWith({ MethodDefinition: ["decorators"] })) // → { ..., MethodDefinition: ["decorators", "key", "value"], ... } ``` ## 📰 Change log See [GitHub releases](https://github.com/eslint/eslint-visitor-keys/releases). ## 🍻 Contributing Welcome. See [ESLint contribution guidelines](https://eslint.org/docs/developer-guide/contributing/). ### Development commands - `npm test` runs tests and measures code coverage. - `npm run lint` checks source codes with ESLint. - `npm run coverage` opens the code coverage report of the previous test with your default browser. - `npm run release` publishes this package to [npm] registory. [npm]: https://www.npmjs.com/ [Node.js]: https://nodejs.org/en/ [ESTree]: https://github.com/estree/estree # fast-json-stable-stringify Deterministic `JSON.stringify()` - a faster version of [@substack](https://github.com/substack)'s json-stable-strigify without [jsonify](https://github.com/substack/jsonify). You can also pass in a custom comparison function. [](https://travis-ci.org/epoberezkin/fast-json-stable-stringify) [](https://coveralls.io/github/epoberezkin/fast-json-stable-stringify?branch=master) # example ``` js var stringify = require('fast-json-stable-stringify'); var obj = { c: 8, b: [{z:6,y:5,x:4},7], a: 3 }; console.log(stringify(obj)); ``` output: ``` {"a":3,"b":[{"x":4,"y":5,"z":6},7],"c":8} ``` # methods ``` js var stringify = require('fast-json-stable-stringify') ``` ## var str = stringify(obj, opts) Return a deterministic stringified string `str` from the object `obj`. ## options ### cmp If `opts` is given, you can supply an `opts.cmp` to have a custom comparison function for object keys. Your function `opts.cmp` is called with these parameters: ``` js opts.cmp({ key: akey, value: avalue }, { key: bkey, value: bvalue }) ``` For example, to sort on the object key names in reverse order you could write: ``` js var stringify = require('fast-json-stable-stringify'); var obj = { c: 8, b: [{z:6,y:5,x:4},7], a: 3 }; var s = stringify(obj, function (a, b) { return a.key < b.key ? 1 : -1; }); console.log(s); ``` which results in the output string: ``` {"c":8,"b":[{"z":6,"y":5,"x":4},7],"a":3} ``` Or if you wanted to sort on the object values in reverse order, you could write: ``` var stringify = require('fast-json-stable-stringify'); var obj = { d: 6, c: 5, b: [{z:3,y:2,x:1},9], a: 10 }; var s = stringify(obj, function (a, b) { return a.value < b.value ? 1 : -1; }); console.log(s); ``` which outputs: ``` {"d":6,"c":5,"b":[{"z":3,"y":2,"x":1},9],"a":10} ``` ### cycles Pass `true` in `opts.cycles` to stringify circular property as `__cycle__` - the result will not be a valid JSON string in this case. TypeError will be thrown in case of circular object without this option. # install With [npm](https://npmjs.org) do: ``` npm install fast-json-stable-stringify ``` # benchmark To run benchmark (requires Node.js 6+): ``` node benchmark ``` Results: ``` fast-json-stable-stringify x 17,189 ops/sec ±1.43% (83 runs sampled) json-stable-stringify x 13,634 ops/sec ±1.39% (85 runs sampled) fast-stable-stringify x 20,212 ops/sec ±1.20% (84 runs sampled) faster-stable-stringify x 15,549 ops/sec ±1.12% (84 runs sampled) The fastest is fast-stable-stringify ``` ## Enterprise support fast-json-stable-stringify package is a part of [Tidelift enterprise subscription](https://tidelift.com/subscription/pkg/npm-fast-json-stable-stringify?utm_source=npm-fast-json-stable-stringify&utm_medium=referral&utm_campaign=enterprise&utm_term=repo) - it provides a centralised commercial support to open-source software users, in addition to the support provided by software maintainers. ## Security contact To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. Please do NOT report security vulnerability via GitHub issues. # license [MIT](https://github.com/epoberezkin/fast-json-stable-stringify/blob/master/LICENSE) # node-supports-preserve-symlinks-flag <sup>[![Version Badge][npm-version-svg]][package-url]</sup> [![github actions][actions-image]][actions-url] [![coverage][codecov-image]][codecov-url] [![dependency status][deps-svg]][deps-url] [![dev dependency status][dev-deps-svg]][dev-deps-url] [![License][license-image]][license-url] [![Downloads][downloads-image]][downloads-url] [![npm badge][npm-badge-png]][package-url] Determine if the current node version supports the `--preserve-symlinks` flag. ## Example ```js var supportsPreserveSymlinks = require('node-supports-preserve-symlinks-flag'); var assert = require('assert'); assert.equal(supportsPreserveSymlinks, null); // in a browser assert.equal(supportsPreserveSymlinks, false); // in node < v6.2 assert.equal(supportsPreserveSymlinks, true); // in node v6.2+ ``` ## Tests Simply clone the repo, `npm install`, and run `npm test` [package-url]: https://npmjs.org/package/node-supports-preserve-symlinks-flag [npm-version-svg]: https://versionbadg.es/inspect-js/node-supports-preserve-symlinks-flag.svg [deps-svg]: https://david-dm.org/inspect-js/node-supports-preserve-symlinks-flag.svg [deps-url]: https://david-dm.org/inspect-js/node-supports-preserve-symlinks-flag [dev-deps-svg]: https://david-dm.org/inspect-js/node-supports-preserve-symlinks-flag/dev-status.svg [dev-deps-url]: https://david-dm.org/inspect-js/node-supports-preserve-symlinks-flag#info=devDependencies [npm-badge-png]: https://nodei.co/npm/node-supports-preserve-symlinks-flag.png?downloads=true&stars=true [license-image]: https://img.shields.io/npm/l/node-supports-preserve-symlinks-flag.svg [license-url]: LICENSE [downloads-image]: https://img.shields.io/npm/dm/node-supports-preserve-symlinks-flag.svg [downloads-url]: https://npm-stat.com/charts.html?package=node-supports-preserve-symlinks-flag [codecov-image]: https://codecov.io/gh/inspect-js/node-supports-preserve-symlinks-flag/branch/main/graphs/badge.svg [codecov-url]: https://app.codecov.io/gh/inspect-js/node-supports-preserve-symlinks-flag/ [actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/inspect-js/node-supports-preserve-symlinks-flag [actions-url]: https://github.com/inspect-js/node-supports-preserve-symlinks-flag/actions [](https://www.npmjs.com/package/espree) [](https://travis-ci.org/eslint/espree) [](https://www.npmjs.com/package/espree) [](https://www.bountysource.com/trackers/9348450-eslint?utm_source=9348450&utm_medium=shield&utm_campaign=TRACKER_BADGE) # Espree Espree started out as a fork of [Esprima](http://esprima.org) v1.2.2, the last stable published released of Esprima before work on ECMAScript 6 began. Espree is now built on top of [Acorn](https://github.com/ternjs/acorn), which has a modular architecture that allows extension of core functionality. The goal of Espree is to produce output that is similar to Esprima with a similar API so that it can be used in place of Esprima. ## Usage Install: ``` npm i espree ``` And in your Node.js code: ```javascript const espree = require("espree"); const ast = espree.parse(code); ``` ## API ### `parse()` `parse` parses the given code and returns a abstract syntax tree (AST). It takes two parameters. - `code` [string]() - the code which needs to be parsed. - `options (Optional)` [Object]() - read more about this [here](#options). ```javascript const espree = require("espree"); const ast = espree.parse(code, options); ``` **Example :** ```js const ast = espree.parse('let foo = "bar"', { ecmaVersion: 6 }); console.log(ast); ``` <details><summary>Output</summary> <p> ``` Node { type: 'Program', start: 0, end: 15, body: [ Node { type: 'VariableDeclaration', start: 0, end: 15, declarations: [Array], kind: 'let' } ], sourceType: 'script' } ``` </p> </details> ### `tokenize()` `tokenize` returns the tokens of a given code. It takes two parameters. - `code` [string]() - the code which needs to be parsed. - `options (Optional)` [Object]() - read more about this [here](#options). Even if `options` is empty or undefined or `options.tokens` is `false`, it assigns it to `true` in order to get the `tokens` array **Example :** ```js const tokens = espree.tokenize('let foo = "bar"', { ecmaVersion: 6 }); console.log(tokens); ``` <details><summary>Output</summary> <p> ``` Token { type: 'Keyword', value: 'let', start: 0, end: 3 }, Token { type: 'Identifier', value: 'foo', start: 4, end: 7 }, Token { type: 'Punctuator', value: '=', start: 8, end: 9 }, Token { type: 'String', value: '"bar"', start: 10, end: 15 } ``` </p> </details> ### `version` Returns the current `espree` version ### `VisitorKeys` Returns all visitor keys for traversing the AST from [eslint-visitor-keys](https://github.com/eslint/eslint-visitor-keys) ### `latestEcmaVersion` Returns the latest ECMAScript supported by `espree` ### `supportedEcmaVersions` Returns an array of all supported ECMAScript versions ## Options ```js const options = { // attach range information to each node range: false, // attach line/column location information to each node loc: false, // create a top-level comments array containing all comments comment: false, // create a top-level tokens array containing all tokens tokens: false, // Set to 3, 5 (default), 6, 7, 8, 9, 10, 11, or 12 to specify the version of ECMAScript syntax you want to use. // You can also set to 2015 (same as 6), 2016 (same as 7), 2017 (same as 8), 2018 (same as 9), 2019 (same as 10), 2020 (same as 11), or 2021 (same as 12) to use the year-based naming. ecmaVersion: 5, // specify which type of script you're parsing ("script" or "module") sourceType: "script", // specify additional language features ecmaFeatures: { // enable JSX parsing jsx: false, // enable return in global scope globalReturn: false, // enable implied strict mode (if ecmaVersion >= 5) impliedStrict: false } } ``` ## Esprima Compatibility Going Forward The primary goal is to produce the exact same AST structure and tokens as Esprima, and that takes precedence over anything else. (The AST structure being the [ESTree](https://github.com/estree/estree) API with JSX extensions.) Separate from that, Espree may deviate from what Esprima outputs in terms of where and how comments are attached, as well as what additional information is available on AST nodes. That is to say, Espree may add more things to the AST nodes than Esprima does but the overall AST structure produced will be the same. Espree may also deviate from Esprima in the interface it exposes. ## Contributing Issues and pull requests will be triaged and responded to as quickly as possible. We operate under the [ESLint Contributor Guidelines](http://eslint.org/docs/developer-guide/contributing), so please be sure to read them before contributing. If you're not sure where to dig in, check out the [issues](https://github.com/eslint/espree/issues). Espree is licensed under a permissive BSD 2-clause license. ## Security Policy We work hard to ensure that Espree is safe for everyone and that security issues are addressed quickly and responsibly. Read the full [security policy](https://github.com/eslint/.github/blob/master/SECURITY.md). ## Build Commands * `npm test` - run all linting and tests * `npm run lint` - run all linting * `npm run browserify` - creates a version of Espree that is usable in a browser ## Differences from Espree 2.x * The `tokenize()` method does not use `ecmaFeatures`. Any string will be tokenized completely based on ECMAScript 6 semantics. * Trailing whitespace no longer is counted as part of a node. * `let` and `const` declarations are no longer parsed by default. You must opt-in by using an `ecmaVersion` newer than `5` or setting `sourceType` to `module`. * The `esparse` and `esvalidate` binary scripts have been removed. * There is no `tolerant` option. We will investigate adding this back in the future. ## Known Incompatibilities In an effort to help those wanting to transition from other parsers to Espree, the following is a list of noteworthy incompatibilities with other parsers. These are known differences that we do not intend to change. ### Esprima 1.2.2 * Esprima counts trailing whitespace as part of each AST node while Espree does not. In Espree, the end of a node is where the last token occurs. * Espree does not parse `let` and `const` declarations by default. * Error messages returned for parsing errors are different. * There are two addition properties on every node and token: `start` and `end`. These represent the same data as `range` and are used internally by Acorn. ### Esprima 2.x * Esprima 2.x uses a different comment attachment algorithm that results in some comments being added in different places than Espree. The algorithm Espree uses is the same one used in Esprima 1.2.2. ## Frequently Asked Questions ### Why another parser [ESLint](http://eslint.org) had been relying on Esprima as its parser from the beginning. While that was fine when the JavaScript language was evolving slowly, the pace of development increased dramatically and Esprima had fallen behind. ESLint, like many other tools reliant on Esprima, has been stuck in using new JavaScript language features until Esprima updates, and that caused our users frustration. We decided the only way for us to move forward was to create our own parser, bringing us inline with JSHint and JSLint, and allowing us to keep implementing new features as we need them. We chose to fork Esprima instead of starting from scratch in order to move as quickly as possible with a compatible API. With Espree 2.0.0, we are no longer a fork of Esprima but rather a translation layer between Acorn and Esprima syntax. This allows us to put work back into a community-supported parser (Acorn) that is continuing to grow and evolve while maintaining an Esprima-compatible parser for those utilities still built on Esprima. ### Have you tried working with Esprima? Yes. Since the start of ESLint, we've regularly filed bugs and feature requests with Esprima and will continue to do so. However, there are some different philosophies around how the projects work that need to be worked through. The initial goal was to have Espree track Esprima and eventually merge the two back together, but we ultimately decided that building on top of Acorn was a better choice due to Acorn's plugin support. ### Why don't you just use Acorn? Acorn is a great JavaScript parser that produces an AST that is compatible with Esprima. Unfortunately, ESLint relies on more than just the AST to do its job. It relies on Esprima's tokens and comment attachment features to get a complete picture of the source code. We investigated switching to Acorn, but the inconsistencies between Esprima and Acorn created too much work for a project like ESLint. We are building on top of Acorn, however, so that we can contribute back and help make Acorn even better. ### What ECMAScript features do you support? Espree supports all ECMAScript 2020 features and partially supports ECMAScript 2021 features. Because ECMAScript 2021 is still under development, we are implementing features as they are finalized. Currently, Espree supports: * [Logical Assignment Operators](https://github.com/tc39/proposal-logical-assignment) * [Numeric Separators](https://github.com/tc39/proposal-numeric-separator) See [finished-proposals.md](https://github.com/tc39/proposals/blob/master/finished-proposals.md) to know what features are finalized. ### How do you determine which experimental features to support? In general, we do not support experimental JavaScript features. We may make exceptions from time to time depending on the maturity of the features. [](https://www.npmjs.com/package/eslint) [](https://www.npmjs.com/package/eslint) [](https://github.com/eslint/eslint/actions) [](https://app.fossa.io/projects/git%2Bhttps%3A%2F%2Fgithub.com%2Feslint%2Feslint?ref=badge_shield) <br /> [](https://opencollective.com/eslint) [](https://opencollective.com/eslint) [](https://twitter.com/intent/user?screen_name=geteslint) # ESLint [Website](https://eslint.org) | [Configuring](https://eslint.org/docs/user-guide/configuring) | [Rules](https://eslint.org/docs/rules/) | [Contributing](https://eslint.org/docs/developer-guide/contributing) | [Reporting Bugs](https://eslint.org/docs/developer-guide/contributing/reporting-bugs) | [Code of Conduct](https://eslint.org/conduct) | [Twitter](https://twitter.com/geteslint) | [Mailing List](https://groups.google.com/group/eslint) | [Chat Room](https://eslint.org/chat) ESLint is a tool for identifying and reporting on patterns found in ECMAScript/JavaScript code. In many ways, it is similar to JSLint and JSHint with a few exceptions: * ESLint uses [Espree](https://github.com/eslint/espree) for JavaScript parsing. * ESLint uses an AST to evaluate patterns in code. * ESLint is completely pluggable, every single rule is a plugin and you can add more at runtime. ## Table of Contents 1. [Installation and Usage](#installation-and-usage) 2. [Configuration](#configuration) 3. [Code of Conduct](#code-of-conduct) 4. [Filing Issues](#filing-issues) 5. [Frequently Asked Questions](#faq) 6. [Releases](#releases) 7. [Security Policy](#security-policy) 8. [Semantic Versioning Policy](#semantic-versioning-policy) 9. [Stylistic Rule Updates](#stylistic-rule-updates) 10. [License](#license) 11. [Team](#team) 12. [Sponsors](#sponsors) 13. [Technology Sponsors](#technology-sponsors) ## <a name="installation-and-usage"></a>Installation and Usage Prerequisites: [Node.js](https://nodejs.org/) (`^10.12.0`, or `>=12.0.0`) built with SSL support. (If you are using an official Node.js distribution, SSL is always built in.) You can install ESLint using npm: ``` $ npm install eslint --save-dev ``` You should then set up a configuration file: ``` $ ./node_modules/.bin/eslint --init ``` After that, you can run ESLint on any file or directory like this: ``` $ ./node_modules/.bin/eslint yourfile.js ``` ## <a name="configuration"></a>Configuration After running `eslint --init`, you'll have a `.eslintrc` file in your directory. In it, you'll see some rules configured like this: ```json { "rules": { "semi": ["error", "always"], "quotes": ["error", "double"] } } ``` The names `"semi"` and `"quotes"` are the names of [rules](https://eslint.org/docs/rules) in ESLint. The first value is the error level of the rule and can be one of these values: * `"off"` or `0` - turn the rule off * `"warn"` or `1` - turn the rule on as a warning (doesn't affect exit code) * `"error"` or `2` - turn the rule on as an error (exit code will be 1) The three error levels allow you fine-grained control over how ESLint applies rules (for more configuration options and details, see the [configuration docs](https://eslint.org/docs/user-guide/configuring)). ## <a name="code-of-conduct"></a>Code of Conduct ESLint adheres to the [JS Foundation Code of Conduct](https://eslint.org/conduct). ## <a name="filing-issues"></a>Filing Issues Before filing an issue, please be sure to read the guidelines for what you're reporting: * [Bug Report](https://eslint.org/docs/developer-guide/contributing/reporting-bugs) * [Propose a New Rule](https://eslint.org/docs/developer-guide/contributing/new-rules) * [Proposing a Rule Change](https://eslint.org/docs/developer-guide/contributing/rule-changes) * [Request a Change](https://eslint.org/docs/developer-guide/contributing/changes) ## <a name="faq"></a>Frequently Asked Questions ### I'm using JSCS, should I migrate to ESLint? Yes. [JSCS has reached end of life](https://eslint.org/blog/2016/07/jscs-end-of-life) and is no longer supported. We have prepared a [migration guide](https://eslint.org/docs/user-guide/migrating-from-jscs) to help you convert your JSCS settings to an ESLint configuration. We are now at or near 100% compatibility with JSCS. If you try ESLint and believe we are not yet compatible with a JSCS rule/configuration, please create an issue (mentioning that it is a JSCS compatibility issue) and we will evaluate it as per our normal process. ### Does Prettier replace ESLint? No, ESLint does both traditional linting (looking for problematic patterns) and style checking (enforcement of conventions). You can use ESLint for everything, or you can combine both using Prettier to format your code and ESLint to catch possible errors. ### Why can't ESLint find my plugins? * Make sure your plugins (and ESLint) are both in your project's `package.json` as devDependencies (or dependencies, if your project uses ESLint at runtime). * Make sure you have run `npm install` and all your dependencies are installed. * Make sure your plugins' peerDependencies have been installed as well. You can use `npm view eslint-plugin-myplugin peerDependencies` to see what peer dependencies `eslint-plugin-myplugin` has. ### Does ESLint support JSX? Yes, ESLint natively supports parsing JSX syntax (this must be enabled in [configuration](https://eslint.org/docs/user-guide/configuring)). Please note that supporting JSX syntax *is not* the same as supporting React. React applies specific semantics to JSX syntax that ESLint doesn't recognize. We recommend using [eslint-plugin-react](https://www.npmjs.com/package/eslint-plugin-react) if you are using React and want React semantics. ### What ECMAScript versions does ESLint support? ESLint has full support for ECMAScript 3, 5 (default), 2015, 2016, 2017, 2018, 2019, and 2020. You can set your desired ECMAScript syntax (and other settings, like global variables or your target environments) through [configuration](https://eslint.org/docs/user-guide/configuring). ### What about experimental features? ESLint's parser only officially supports the latest final ECMAScript standard. We will make changes to core rules in order to avoid crashes on stage 3 ECMAScript syntax proposals (as long as they are implemented using the correct experimental ESTree syntax). We may make changes to core rules to better work with language extensions (such as JSX, Flow, and TypeScript) on a case-by-case basis. In other cases (including if rules need to warn on more or fewer cases due to new syntax, rather than just not crashing), we recommend you use other parsers and/or rule plugins. If you are using Babel, you can use the [babel-eslint](https://github.com/babel/babel-eslint) parser and [eslint-plugin-babel](https://github.com/babel/eslint-plugin-babel) to use any option available in Babel. Once a language feature has been adopted into the ECMAScript standard (stage 4 according to the [TC39 process](https://tc39.github.io/process-document/)), we will accept issues and pull requests related to the new feature, subject to our [contributing guidelines](https://eslint.org/docs/developer-guide/contributing). Until then, please use the appropriate parser and plugin(s) for your experimental feature. ### Where to ask for help? Join our [Mailing List](https://groups.google.com/group/eslint) or [Chatroom](https://eslint.org/chat). ### Why doesn't ESLint lock dependency versions? Lock files like `package-lock.json` are helpful for deployed applications. They ensure that dependencies are consistent between environments and across deployments. Packages like `eslint` that get published to the npm registry do not include lock files. `npm install eslint` as a user will respect version constraints in ESLint's `package.json`. ESLint and its dependencies will be included in the user's lock file if one exists, but ESLint's own lock file would not be used. We intentionally don't lock dependency versions so that we have the latest compatible dependency versions in development and CI that our users get when installing ESLint in a project. The Twilio blog has a [deeper dive](https://www.twilio.com/blog/lockfiles-nodejs) to learn more. ## <a name="releases"></a>Releases We have scheduled releases every two weeks on Friday or Saturday. You can follow a [release issue](https://github.com/eslint/eslint/issues?q=is%3Aopen+is%3Aissue+label%3Arelease) for updates about the scheduling of any particular release. ## <a name="security-policy"></a>Security Policy ESLint takes security seriously. We work hard to ensure that ESLint is safe for everyone and that security issues are addressed quickly and responsibly. Read the full [security policy](https://github.com/eslint/.github/blob/master/SECURITY.md). ## <a name="semantic-versioning-policy"></a>Semantic Versioning Policy ESLint follows [semantic versioning](https://semver.org). However, due to the nature of ESLint as a code quality tool, it's not always clear when a minor or major version bump occurs. To help clarify this for everyone, we've defined the following semantic versioning policy for ESLint: * Patch release (intended to not break your lint build) * A bug fix in a rule that results in ESLint reporting fewer linting errors. * A bug fix to the CLI or core (including formatters). * Improvements to documentation. * Non-user-facing changes such as refactoring code, adding, deleting, or modifying tests, and increasing test coverage. * Re-releasing after a failed release (i.e., publishing a release that doesn't work for anyone). * Minor release (might break your lint build) * A bug fix in a rule that results in ESLint reporting more linting errors. * A new rule is created. * A new option to an existing rule that does not result in ESLint reporting more linting errors by default. * A new addition to an existing rule to support a newly-added language feature (within the last 12 months) that will result in ESLint reporting more linting errors by default. * An existing rule is deprecated. * A new CLI capability is created. * New capabilities to the public API are added (new classes, new methods, new arguments to existing methods, etc.). * A new formatter is created. * `eslint:recommended` is updated and will result in strictly fewer linting errors (e.g., rule removals). * Major release (likely to break your lint build) * `eslint:recommended` is updated and may result in new linting errors (e.g., rule additions, most rule option updates). * A new option to an existing rule that results in ESLint reporting more linting errors by default. * An existing formatter is removed. * Part of the public API is removed or changed in an incompatible way. The public API includes: * Rule schemas * Configuration schema * Command-line options * Node.js API * Rule, formatter, parser, plugin APIs According to our policy, any minor update may report more linting errors than the previous release (ex: from a bug fix). As such, we recommend using the tilde (`~`) in `package.json` e.g. `"eslint": "~3.1.0"` to guarantee the results of your builds. ## <a name="stylistic-rule-updates"></a>Stylistic Rule Updates Stylistic rules are frozen according to [our policy](https://eslint.org/blog/2020/05/changes-to-rules-policies) on how we evaluate new rules and rule changes. This means: * **Bug fixes**: We will still fix bugs in stylistic rules. * **New ECMAScript features**: We will also make sure stylistic rules are compatible with new ECMAScript features. * **New options**: We will **not** add any new options to stylistic rules unless an option is the only way to fix a bug or support a newly-added ECMAScript feature. ## <a name="license"></a>License [](https://app.fossa.io/projects/git%2Bhttps%3A%2F%2Fgithub.com%2Feslint%2Feslint?ref=badge_large) ## <a name="team"></a>Team These folks keep the project moving and are resources for help. <!-- NOTE: This section is autogenerated. Do not manually edit.--> <!--teamstart--> ### Technical Steering Committee (TSC) The people who manage releases, review feature requests, and meet regularly to ensure ESLint is properly maintained. <table><tbody><tr><td align="center" valign="top" width="11%"> <a href="https://github.com/nzakas"> <img src="https://github.com/nzakas.png?s=75" width="75" height="75"><br /> Nicholas C. Zakas </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/btmills"> <img src="https://github.com/btmills.png?s=75" width="75" height="75"><br /> Brandon Mills </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/mdjermanovic"> <img src="https://github.com/mdjermanovic.png?s=75" width="75" height="75"><br /> Milos Djermanovic </a> </td></tr></tbody></table> ### Reviewers The people who review and implement new features. <table><tbody><tr><td align="center" valign="top" width="11%"> <a href="https://github.com/mysticatea"> <img src="https://github.com/mysticatea.png?s=75" width="75" height="75"><br /> Toru Nagashima </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/aladdin-add"> <img src="https://github.com/aladdin-add.png?s=75" width="75" height="75"><br /> 薛定谔的猫 </a> </td></tr></tbody></table> ### Committers The people who review and fix bugs and help triage issues. <table><tbody><tr><td align="center" valign="top" width="11%"> <a href="https://github.com/brettz9"> <img src="https://github.com/brettz9.png?s=75" width="75" height="75"><br /> Brett Zamir </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/bmish"> <img src="https://github.com/bmish.png?s=75" width="75" height="75"><br /> Bryan Mishkin </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/g-plane"> <img src="https://github.com/g-plane.png?s=75" width="75" height="75"><br /> Pig Fang </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/anikethsaha"> <img src="https://github.com/anikethsaha.png?s=75" width="75" height="75"><br /> Anix </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/yeonjuan"> <img src="https://github.com/yeonjuan.png?s=75" width="75" height="75"><br /> YeonJuan </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/snitin315"> <img src="https://github.com/snitin315.png?s=75" width="75" height="75"><br /> Nitin Kumar </a> </td></tr></tbody></table> <!--teamend--> ## <a name="sponsors"></a>Sponsors The following companies, organizations, and individuals support ESLint's ongoing maintenance and development. [Become a Sponsor](https://opencollective.com/eslint) to get your logo on our README and website. <!-- NOTE: This section is autogenerated. Do not manually edit.--> <!--sponsorsstart--> <h3>Platinum Sponsors</h3> <p><a href="https://automattic.com"><img src="https://images.opencollective.com/photomatt/d0ef3e1/logo.png" alt="Automattic" height="undefined"></a></p><h3>Gold Sponsors</h3> <p><a href="https://nx.dev"><img src="https://images.opencollective.com/nx/0efbe42/logo.png" alt="Nx (by Nrwl)" height="96"></a> <a href="https://google.com/chrome"><img src="https://images.opencollective.com/chrome/dc55bd4/logo.png" alt="Chrome's Web Framework & Tools Performance Fund" height="96"></a> <a href="https://www.salesforce.com"><img src="https://images.opencollective.com/salesforce/ca8f997/logo.png" alt="Salesforce" height="96"></a> <a href="https://www.airbnb.com/"><img src="https://images.opencollective.com/airbnb/d327d66/logo.png" alt="Airbnb" height="96"></a> <a href="https://coinbase.com"><img src="https://avatars.githubusercontent.com/u/1885080?v=4" alt="Coinbase" height="96"></a> <a href="https://substack.com/"><img src="https://avatars.githubusercontent.com/u/53023767?v=4" alt="Substack" height="96"></a></p><h3>Silver Sponsors</h3> <p><a href="https://retool.com/"><img src="https://images.opencollective.com/retool/98ea68e/logo.png" alt="Retool" height="64"></a> <a href="https://liftoff.io/"><img src="https://images.opencollective.com/liftoff/5c4fa84/logo.png" alt="Liftoff" height="64"></a></p><h3>Bronze Sponsors</h3> <p><a href="https://www.crosswordsolver.org/anagram-solver/"><img src="https://images.opencollective.com/anagram-solver/2666271/logo.png" alt="Anagram Solver" height="32"></a> <a href="null"><img src="https://images.opencollective.com/bugsnag-stability-monitoring/c2cef36/logo.png" alt="Bugsnag Stability Monitoring" height="32"></a> <a href="https://mixpanel.com"><img src="https://images.opencollective.com/mixpanel/cd682f7/logo.png" alt="Mixpanel" height="32"></a> <a href="https://www.vpsserver.com"><img src="https://images.opencollective.com/vpsservercom/logo.png" alt="VPS Server" height="32"></a> <a href="https://icons8.com"><img src="https://images.opencollective.com/icons8/7fa1641/logo.png" alt="Icons8: free icons, photos, illustrations, and music" height="32"></a> <a href="https://discord.com"><img src="https://images.opencollective.com/discordapp/f9645d9/logo.png" alt="Discord" height="32"></a> <a href="https://themeisle.com"><img src="https://images.opencollective.com/themeisle/d5592fe/logo.png" alt="ThemeIsle" height="32"></a> <a href="https://www.firesticktricks.com"><img src="https://images.opencollective.com/fire-stick-tricks/b8fbe2c/logo.png" alt="Fire Stick Tricks" height="32"></a> <a href="https://www.practiceignition.com"><img src="https://avatars.githubusercontent.com/u/5753491?v=4" alt="Practice Ignition" height="32"></a></p> <!--sponsorsend--> ## <a name="technology-sponsors"></a>Technology Sponsors * Site search ([eslint.org](https://eslint.org)) is sponsored by [Algolia](https://www.algolia.com) * Hosting for ([eslint.org](https://eslint.org)) is sponsored by [Netlify](https://www.netlify.com) * Password management is sponsored by [1Password](https://www.1password.com) [![NPM version][npm-image]][npm-url] [![build status][travis-image]][travis-url] [![Test coverage][coveralls-image]][coveralls-url] [![Downloads][downloads-image]][downloads-url] [](https://gitter.im/eslint/doctrine?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) # Doctrine Doctrine is a [JSDoc](http://usejsdoc.org) parser that parses documentation comments from JavaScript (you need to pass in the comment, not a whole JavaScript file). ## Installation You can install Doctrine using [npm](https://npmjs.com): ``` $ npm install doctrine --save-dev ``` Doctrine can also be used in web browsers using [Browserify](http://browserify.org). ## Usage Require doctrine inside of your JavaScript: ```js var doctrine = require("doctrine"); ``` ### parse() The primary method is `parse()`, which accepts two arguments: the JSDoc comment to parse and an optional options object. The available options are: * `unwrap` - set to `true` to delete the leading `/**`, any `*` that begins a line, and the trailing `*/` from the source text. Default: `false`. * `tags` - an array of tags to return. When specified, Doctrine returns only tags in this array. For example, if `tags` is `["param"]`, then only `@param` tags will be returned. Default: `null`. * `recoverable` - set to `true` to keep parsing even when syntax errors occur. Default: `false`. * `sloppy` - set to `true` to allow optional parameters to be specified in brackets (`@param {string} [foo]`). Default: `false`. * `lineNumbers` - set to `true` to add `lineNumber` to each node, specifying the line on which the node is found in the source. Default: `false`. * `range` - set to `true` to add `range` to each node, specifying the start and end index of the node in the original comment. Default: `false`. Here's a simple example: ```js var ast = doctrine.parse( [ "/**", " * This function comment is parsed by doctrine", " * @param {{ok:String}} userName", "*/" ].join('\n'), { unwrap: true }); ``` This example returns the following AST: { "description": "This function comment is parsed by doctrine", "tags": [ { "title": "param", "description": null, "type": { "type": "RecordType", "fields": [ { "type": "FieldType", "key": "ok", "value": { "type": "NameExpression", "name": "String" } } ] }, "name": "userName" } ] } See the [demo page](http://eslint.org/doctrine/demo/) more detail. ## Team These folks keep the project moving and are resources for help: * Nicholas C. Zakas ([@nzakas](https://github.com/nzakas)) - project lead * Yusuke Suzuki ([@constellation](https://github.com/constellation)) - reviewer ## Contributing Issues and pull requests will be triaged and responded to as quickly as possible. We operate under the [ESLint Contributor Guidelines](http://eslint.org/docs/developer-guide/contributing), so please be sure to read them before contributing. If you're not sure where to dig in, check out the [issues](https://github.com/eslint/doctrine/issues). ## Frequently Asked Questions ### Can I pass a whole JavaScript file to Doctrine? No. Doctrine can only parse JSDoc comments, so you'll need to pass just the JSDoc comment to Doctrine in order to work. ### License #### doctrine Copyright JS Foundation and other contributors, https://js.foundation Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. #### esprima some of functions is derived from esprima Copyright (C) 2012, 2011 [Ariya Hidayat](http://ariya.ofilabs.com/about) (twitter: [@ariyahidayat](http://twitter.com/ariyahidayat)) and other contributors. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #### closure-compiler some of extensions is derived from closure-compiler Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ ### Where to ask for help? Join our [Chatroom](https://gitter.im/eslint/doctrine) [npm-image]: https://img.shields.io/npm/v/doctrine.svg?style=flat-square [npm-url]: https://www.npmjs.com/package/doctrine [travis-image]: https://img.shields.io/travis/eslint/doctrine/master.svg?style=flat-square [travis-url]: https://travis-ci.org/eslint/doctrine [coveralls-image]: https://img.shields.io/coveralls/eslint/doctrine/master.svg?style=flat-square [coveralls-url]: https://coveralls.io/r/eslint/doctrine?branch=master [downloads-image]: http://img.shields.io/npm/dm/doctrine.svg?style=flat-square [downloads-url]: https://www.npmjs.com/package/doctrine # json-schema-traverse Traverse JSON Schema passing each schema object to callback [](https://github.com/epoberezkin/json-schema-traverse/actions?query=workflow%3Abuild) [](https://www.npmjs.com/package/json-schema-traverse) [](https://coveralls.io/github/epoberezkin/json-schema-traverse?branch=master) ## Install ``` npm install json-schema-traverse ``` ## Usage ```javascript const traverse = require('json-schema-traverse'); const schema = { properties: { foo: {type: 'string'}, bar: {type: 'integer'} } }; traverse(schema, {cb}); // cb is called 3 times with: // 1. root schema // 2. {type: 'string'} // 3. {type: 'integer'} // Or: traverse(schema, {cb: {pre, post}}); // pre is called 3 times with: // 1. root schema // 2. {type: 'string'} // 3. {type: 'integer'} // // post is called 3 times with: // 1. {type: 'string'} // 2. {type: 'integer'} // 3. root schema ``` Callback function `cb` is called for each schema object (not including draft-06 boolean schemas), including the root schema, in pre-order traversal. Schema references ($ref) are not resolved, they are passed as is. Alternatively, you can pass a `{pre, post}` object as `cb`, and then `pre` will be called before traversing child elements, and `post` will be called after all child elements have been traversed. Callback is passed these parameters: - _schema_: the current schema object - _JSON pointer_: from the root schema to the current schema object - _root schema_: the schema passed to `traverse` object - _parent JSON pointer_: from the root schema to the parent schema object (see below) - _parent keyword_: the keyword inside which this schema appears (e.g. `properties`, `anyOf`, etc.) - _parent schema_: not necessarily parent object/array; in the example above the parent schema for `{type: 'string'}` is the root schema - _index/property_: index or property name in the array/object containing multiple schemas; in the example above for `{type: 'string'}` the property name is `'foo'` ## Traverse objects in all unknown keywords ```javascript const traverse = require('json-schema-traverse'); const schema = { mySchema: { minimum: 1, maximum: 2 } }; traverse(schema, {allKeys: true, cb}); // cb is called 2 times with: // 1. root schema // 2. mySchema ``` Without option `allKeys: true` callback will be called only with root schema. ## Enterprise support json-schema-traverse package is a part of [Tidelift enterprise subscription](https://tidelift.com/subscription/pkg/npm-json-schema-traverse?utm_source=npm-json-schema-traverse&utm_medium=referral&utm_campaign=enterprise&utm_term=repo) - it provides a centralised commercial support to open-source software users, in addition to the support provided by software maintainers. ## Security contact To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. Please do NOT report security vulnerability via GitHub issues. ## License [MIT](https://github.com/epoberezkin/json-schema-traverse/blob/master/LICENSE) # isarray `Array#isArray` for older browsers. [](http://travis-ci.org/juliangruber/isarray) [](https://www.npmjs.org/package/isarray) [ ](https://ci.testling.com/juliangruber/isarray) ## Usage ```js var isArray = require('isarray'); console.log(isArray([])); // => true console.log(isArray({})); // => false ``` ## Installation With [npm](http://npmjs.org) do ```bash $ npm install isarray ``` Then bundle for the browser with [browserify](https://github.com/substack/browserify). With [component](http://component.io) do ```bash $ component install juliangruber/isarray ``` ## License (MIT) Copyright (c) 2013 Julian Gruber &lt;julian@juliangruber.com&gt; Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # fs.realpath A backwards-compatible fs.realpath for Node v6 and above In Node v6, the JavaScript implementation of fs.realpath was replaced with a faster (but less resilient) native implementation. That raises new and platform-specific errors and cannot handle long or excessively symlink-looping paths. This module handles those cases by detecting the new errors and falling back to the JavaScript implementation. On versions of Node prior to v6, it has no effect. ## USAGE ```js var rp = require('fs.realpath') // async version rp.realpath(someLongAndLoopingPath, function (er, real) { // the ELOOP was handled, but it was a bit slower }) // sync version var real = rp.realpathSync(someLongAndLoopingPath) // monkeypatch at your own risk! // This replaces the fs.realpath/fs.realpathSync builtins rp.monkeypatch() // un-do the monkeypatching rp.unmonkeypatch() ``` # lodash.truncate v4.4.2 The [lodash](https://lodash.com/) method `_.truncate` exported as a [Node.js](https://nodejs.org/) module. ## Installation Using npm: ```bash $ {sudo -H} npm i -g npm $ npm i --save lodash.truncate ``` In Node.js: ```js var truncate = require('lodash.truncate'); ``` See the [documentation](https://lodash.com/docs#truncate) or [package source](https://github.com/lodash/lodash/blob/4.4.2-npm-packages/lodash.truncate) for more details. # axios [](https://www.npmjs.org/package/axios) [](https://travis-ci.org/axios/axios) [](https://coveralls.io/r/mzabriskie/axios) [](https://packagephobia.now.sh/result?p=axios) [](http://npm-stat.com/charts.html?package=axios) [](https://gitter.im/mzabriskie/axios) [](https://www.codetriage.com/axios/axios) Promise based HTTP client for the browser and node.js ## Features - Make [XMLHttpRequests](https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest) from the browser - Make [http](http://nodejs.org/api/http.html) requests from node.js - Supports the [Promise](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise) API - Intercept request and response - Transform request and response data - Cancel requests - Automatic transforms for JSON data - Client side support for protecting against [XSRF](http://en.wikipedia.org/wiki/Cross-site_request_forgery) ## Browser Support  |  |  |  |  |  | --- | --- | --- | --- | --- | --- | Latest ✔ | Latest ✔ | Latest ✔ | Latest ✔ | Latest ✔ | 11 ✔ | [](https://saucelabs.com/u/axios) ## Installing Using npm: ```bash $ npm install axios ``` Using bower: ```bash $ bower install axios ``` Using yarn: ```bash $ yarn add axios ``` Using cdn: ```html <script src="https://unpkg.com/axios/dist/axios.min.js"></script> ``` ## Example ### note: CommonJS usage In order to gain the TypeScript typings (for intellisense / autocomplete) while using CommonJS imports with `require()` use the following approach: ```js const axios = require('axios').default; // axios.<method> will now provide autocomplete and parameter typings ``` Performing a `GET` request ```js const axios = require('axios'); // Make a request for a user with a given ID axios.get('/user?ID=12345') .then(function (response) { // handle success console.log(response); }) .catch(function (error) { // handle error console.log(error); }) .finally(function () { // always executed }); // Optionally the request above could also be done as axios.get('/user', { params: { ID: 12345 } }) .then(function (response) { console.log(response); }) .catch(function (error) { console.log(error); }) .finally(function () { // always executed }); // Want to use async/await? Add the `async` keyword to your outer function/method. async function getUser() { try { const response = await axios.get('/user?ID=12345'); console.log(response); } catch (error) { console.error(error); } } ``` > **NOTE:** `async/await` is part of ECMAScript 2017 and is not supported in Internet > Explorer and older browsers, so use with caution. Performing a `POST` request ```js axios.post('/user', { firstName: 'Fred', lastName: 'Flintstone' }) .then(function (response) { console.log(response); }) .catch(function (error) { console.log(error); }); ``` Performing multiple concurrent requests ```js function getUserAccount() { return axios.get('/user/12345'); } function getUserPermissions() { return axios.get('/user/12345/permissions'); } axios.all([getUserAccount(), getUserPermissions()]) .then(axios.spread(function (acct, perms) { // Both requests are now complete })); ``` ## axios API Requests can be made by passing the relevant config to `axios`. ##### axios(config) ```js // Send a POST request axios({ method: 'post', url: '/user/12345', data: { firstName: 'Fred', lastName: 'Flintstone' } }); ``` ```js // GET request for remote image axios({ method: 'get', url: 'http://bit.ly/2mTM3nY', responseType: 'stream' }) .then(function (response) { response.data.pipe(fs.createWriteStream('ada_lovelace.jpg')) }); ``` ##### axios(url[, config]) ```js // Send a GET request (default method) axios('/user/12345'); ``` ### Request method aliases For convenience aliases have been provided for all supported request methods. ##### axios.request(config) ##### axios.get(url[, config]) ##### axios.delete(url[, config]) ##### axios.head(url[, config]) ##### axios.options(url[, config]) ##### axios.post(url[, data[, config]]) ##### axios.put(url[, data[, config]]) ##### axios.patch(url[, data[, config]]) ###### NOTE When using the alias methods `url`, `method`, and `data` properties don't need to be specified in config. ### Concurrency Helper functions for dealing with concurrent requests. ##### axios.all(iterable) ##### axios.spread(callback) ### Creating an instance You can create a new instance of axios with a custom config. ##### axios.create([config]) ```js const instance = axios.create({ baseURL: 'https://some-domain.com/api/', timeout: 1000, headers: {'X-Custom-Header': 'foobar'} }); ``` ### Instance methods The available instance methods are listed below. The specified config will be merged with the instance config. ##### axios#request(config) ##### axios#get(url[, config]) ##### axios#delete(url[, config]) ##### axios#head(url[, config]) ##### axios#options(url[, config]) ##### axios#post(url[, data[, config]]) ##### axios#put(url[, data[, config]]) ##### axios#patch(url[, data[, config]]) ##### axios#getUri([config]) ## Request Config These are the available config options for making requests. Only the `url` is required. Requests will default to `GET` if `method` is not specified. ```js { // `url` is the server URL that will be used for the request url: '/user', // `method` is the request method to be used when making the request method: 'get', // default // `baseURL` will be prepended to `url` unless `url` is absolute. // It can be convenient to set `baseURL` for an instance of axios to pass relative URLs // to methods of that instance. baseURL: 'https://some-domain.com/api/', // `transformRequest` allows changes to the request data before it is sent to the server // This is only applicable for request methods 'PUT', 'POST', 'PATCH' and 'DELETE' // The last function in the array must return a string or an instance of Buffer, ArrayBuffer, // FormData or Stream // You may modify the headers object. transformRequest: [function (data, headers) { // Do whatever you want to transform the data return data; }], // `transformResponse` allows changes to the response data to be made before // it is passed to then/catch transformResponse: [function (data) { // Do whatever you want to transform the data return data; }], // `headers` are custom headers to be sent headers: {'X-Requested-With': 'XMLHttpRequest'}, // `params` are the URL parameters to be sent with the request // Must be a plain object or a URLSearchParams object params: { ID: 12345 }, // `paramsSerializer` is an optional function in charge of serializing `params` // (e.g. https://www.npmjs.com/package/qs, http://api.jquery.com/jquery.param/) paramsSerializer: function (params) { return Qs.stringify(params, {arrayFormat: 'brackets'}) }, // `data` is the data to be sent as the request body // Only applicable for request methods 'PUT', 'POST', and 'PATCH' // When no `transformRequest` is set, must be of one of the following types: // - string, plain object, ArrayBuffer, ArrayBufferView, URLSearchParams // - Browser only: FormData, File, Blob // - Node only: Stream, Buffer data: { firstName: 'Fred' }, // syntax alternative to send data into the body // method post // only the value is sent, not the key data: 'Country=Brasil&City=Belo Horizonte', // `timeout` specifies the number of milliseconds before the request times out. // If the request takes longer than `timeout`, the request will be aborted. timeout: 1000, // default is `0` (no timeout) // `withCredentials` indicates whether or not cross-site Access-Control requests // should be made using credentials withCredentials: false, // default // `adapter` allows custom handling of requests which makes testing easier. // Return a promise and supply a valid response (see lib/adapters/README.md). adapter: function (config) { /* ... */ }, // `auth` indicates that HTTP Basic auth should be used, and supplies credentials. // This will set an `Authorization` header, overwriting any existing // `Authorization` custom headers you have set using `headers`. // Please note that only HTTP Basic auth is configurable through this parameter. // For Bearer tokens and such, use `Authorization` custom headers instead. auth: { username: 'janedoe', password: 's00pers3cret' }, // `responseType` indicates the type of data that the server will respond with // options are: 'arraybuffer', 'document', 'json', 'text', 'stream' // browser only: 'blob' responseType: 'json', // default // `responseEncoding` indicates encoding to use for decoding responses // Note: Ignored for `responseType` of 'stream' or client-side requests responseEncoding: 'utf8', // default // `xsrfCookieName` is the name of the cookie to use as a value for xsrf token xsrfCookieName: 'XSRF-TOKEN', // default // `xsrfHeaderName` is the name of the http header that carries the xsrf token value xsrfHeaderName: 'X-XSRF-TOKEN', // default // `onUploadProgress` allows handling of progress events for uploads onUploadProgress: function (progressEvent) { // Do whatever you want with the native progress event }, // `onDownloadProgress` allows handling of progress events for downloads onDownloadProgress: function (progressEvent) { // Do whatever you want with the native progress event }, // `maxContentLength` defines the max size of the http response content in bytes allowed maxContentLength: 2000, // `validateStatus` defines whether to resolve or reject the promise for a given // HTTP response status code. If `validateStatus` returns `true` (or is set to `null` // or `undefined`), the promise will be resolved; otherwise, the promise will be // rejected. validateStatus: function (status) { return status >= 200 && status < 300; // default }, // `maxRedirects` defines the maximum number of redirects to follow in node.js. // If set to 0, no redirects will be followed. maxRedirects: 5, // default // `socketPath` defines a UNIX Socket to be used in node.js. // e.g. '/var/run/docker.sock' to send requests to the docker daemon. // Only either `socketPath` or `proxy` can be specified. // If both are specified, `socketPath` is used. socketPath: null, // default // `httpAgent` and `httpsAgent` define a custom agent to be used when performing http // and https requests, respectively, in node.js. This allows options to be added like // `keepAlive` that are not enabled by default. httpAgent: new http.Agent({ keepAlive: true }), httpsAgent: new https.Agent({ keepAlive: true }), // 'proxy' defines the hostname and port of the proxy server. // You can also define your proxy using the conventional `http_proxy` and // `https_proxy` environment variables. If you are using environment variables // for your proxy configuration, you can also define a `no_proxy` environment // variable as a comma-separated list of domains that should not be proxied. // Use `false` to disable proxies, ignoring environment variables. // `auth` indicates that HTTP Basic auth should be used to connect to the proxy, and // supplies credentials. // This will set an `Proxy-Authorization` header, overwriting any existing // `Proxy-Authorization` custom headers you have set using `headers`. proxy: { host: '127.0.0.1', port: 9000, auth: { username: 'mikeymike', password: 'rapunz3l' } }, // `cancelToken` specifies a cancel token that can be used to cancel the request // (see Cancellation section below for details) cancelToken: new CancelToken(function (cancel) { }) } ``` ## Response Schema The response for a request contains the following information. ```js { // `data` is the response that was provided by the server data: {}, // `status` is the HTTP status code from the server response status: 200, // `statusText` is the HTTP status message from the server response statusText: 'OK', // `headers` the headers that the server responded with // All header names are lower cased headers: {}, // `config` is the config that was provided to `axios` for the request config: {}, // `request` is the request that generated this response // It is the last ClientRequest instance in node.js (in redirects) // and an XMLHttpRequest instance in the browser request: {} } ``` When using `then`, you will receive the response as follows: ```js axios.get('/user/12345') .then(function (response) { console.log(response.data); console.log(response.status); console.log(response.statusText); console.log(response.headers); console.log(response.config); }); ``` When using `catch`, or passing a [rejection callback](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/then) as second parameter of `then`, the response will be available through the `error` object as explained in the [Handling Errors](#handling-errors) section. ## Config Defaults You can specify config defaults that will be applied to every request. ### Global axios defaults ```js axios.defaults.baseURL = 'https://api.example.com'; axios.defaults.headers.common['Authorization'] = AUTH_TOKEN; axios.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded'; ``` ### Custom instance defaults ```js // Set config defaults when creating the instance const instance = axios.create({ baseURL: 'https://api.example.com' }); // Alter defaults after instance has been created instance.defaults.headers.common['Authorization'] = AUTH_TOKEN; ``` ### Config order of precedence Config will be merged with an order of precedence. The order is library defaults found in [lib/defaults.js](https://github.com/axios/axios/blob/master/lib/defaults.js#L28), then `defaults` property of the instance, and finally `config` argument for the request. The latter will take precedence over the former. Here's an example. ```js // Create an instance using the config defaults provided by the library // At this point the timeout config value is `0` as is the default for the library const instance = axios.create(); // Override timeout default for the library // Now all requests using this instance will wait 2.5 seconds before timing out instance.defaults.timeout = 2500; // Override timeout for this request as it's known to take a long time instance.get('/longRequest', { timeout: 5000 }); ``` ## Interceptors You can intercept requests or responses before they are handled by `then` or `catch`. ```js // Add a request interceptor axios.interceptors.request.use(function (config) { // Do something before request is sent return config; }, function (error) { // Do something with request error return Promise.reject(error); }); // Add a response interceptor axios.interceptors.response.use(function (response) { // Any status code that lie within the range of 2xx cause this function to trigger // Do something with response data return response; }, function (error) { // Any status codes that falls outside the range of 2xx cause this function to trigger // Do something with response error return Promise.reject(error); }); ``` If you need to remove an interceptor later you can. ```js const myInterceptor = axios.interceptors.request.use(function () {/*...*/}); axios.interceptors.request.eject(myInterceptor); ``` You can add interceptors to a custom instance of axios. ```js const instance = axios.create(); instance.interceptors.request.use(function () {/*...*/}); ``` ## Handling Errors ```js axios.get('/user/12345') .catch(function (error) { if (error.response) { // The request was made and the server responded with a status code // that falls out of the range of 2xx console.log(error.response.data); console.log(error.response.status); console.log(error.response.headers); } else if (error.request) { // The request was made but no response was received // `error.request` is an instance of XMLHttpRequest in the browser and an instance of // http.ClientRequest in node.js console.log(error.request); } else { // Something happened in setting up the request that triggered an Error console.log('Error', error.message); } console.log(error.config); }); ``` Using the `validateStatus` config option, you can define HTTP code(s) that should throw an error. ```js axios.get('/user/12345', { validateStatus: function (status) { return status < 500; // Reject only if the status code is greater than or equal to 500 } }) ``` Using `toJSON` you get an object with more information about the HTTP error. ```js axios.get('/user/12345') .catch(function (error) { console.log(error.toJSON()); }); ``` ## Cancellation You can cancel a request using a *cancel token*. > The axios cancel token API is based on the withdrawn [cancelable promises proposal](https://github.com/tc39/proposal-cancelable-promises). You can create a cancel token using the `CancelToken.source` factory as shown below: ```js const CancelToken = axios.CancelToken; const source = CancelToken.source(); axios.get('/user/12345', { cancelToken: source.token }).catch(function (thrown) { if (axios.isCancel(thrown)) { console.log('Request canceled', thrown.message); } else { // handle error } }); axios.post('/user/12345', { name: 'new name' }, { cancelToken: source.token }) // cancel the request (the message parameter is optional) source.cancel('Operation canceled by the user.'); ``` You can also create a cancel token by passing an executor function to the `CancelToken` constructor: ```js const CancelToken = axios.CancelToken; let cancel; axios.get('/user/12345', { cancelToken: new CancelToken(function executor(c) { // An executor function receives a cancel function as a parameter cancel = c; }) }); // cancel the request cancel(); ``` > Note: you can cancel several requests with the same cancel token. ## Using application/x-www-form-urlencoded format By default, axios serializes JavaScript objects to `JSON`. To send data in the `application/x-www-form-urlencoded` format instead, you can use one of the following options. ### Browser In a browser, you can use the [`URLSearchParams`](https://developer.mozilla.org/en-US/docs/Web/API/URLSearchParams) API as follows: ```js const params = new URLSearchParams(); params.append('param1', 'value1'); params.append('param2', 'value2'); axios.post('/foo', params); ``` > Note that `URLSearchParams` is not supported by all browsers (see [caniuse.com](http://www.caniuse.com/#feat=urlsearchparams)), but there is a [polyfill](https://github.com/WebReflection/url-search-params) available (make sure to polyfill the global environment). Alternatively, you can encode data using the [`qs`](https://github.com/ljharb/qs) library: ```js const qs = require('qs'); axios.post('/foo', qs.stringify({ 'bar': 123 })); ``` Or in another way (ES6), ```js import qs from 'qs'; const data = { 'bar': 123 }; const options = { method: 'POST', headers: { 'content-type': 'application/x-www-form-urlencoded' }, data: qs.stringify(data), url, }; axios(options); ``` ### Node.js In node.js, you can use the [`querystring`](https://nodejs.org/api/querystring.html) module as follows: ```js const querystring = require('querystring'); axios.post('http://something.com/', querystring.stringify({ foo: 'bar' })); ``` You can also use the [`qs`](https://github.com/ljharb/qs) library. ###### NOTE The `qs` library is preferable if you need to stringify nested objects, as the `querystring` method has known issues with that use case (https://github.com/nodejs/node-v0.x-archive/issues/1665). ## Semver Until axios reaches a `1.0` release, breaking changes will be released with a new minor version. For example `0.5.1`, and `0.5.4` will have the same API, but `0.6.0` will have breaking changes. ## Promises axios depends on a native ES6 Promise implementation to be [supported](http://caniuse.com/promises). If your environment doesn't support ES6 Promises, you can [polyfill](https://github.com/jakearchibald/es6-promise). ## TypeScript axios includes [TypeScript](http://typescriptlang.org) definitions. ```typescript import axios from 'axios'; axios.get('/user?ID=12345'); ``` ## Resources * [Changelog](https://github.com/axios/axios/blob/master/CHANGELOG.md) * [Upgrade Guide](https://github.com/axios/axios/blob/master/UPGRADE_GUIDE.md) * [Ecosystem](https://github.com/axios/axios/blob/master/ECOSYSTEM.md) * [Contributing Guide](https://github.com/axios/axios/blob/master/CONTRIBUTING.md) * [Code of Conduct](https://github.com/axios/axios/blob/master/CODE_OF_CONDUCT.md) ## Credits axios is heavily inspired by the [$http service](https://docs.angularjs.org/api/ng/service/$http) provided in [Angular](https://angularjs.org/). Ultimately axios is an effort to provide a standalone `$http`-like service for use outside of Angular. ## License [MIT](LICENSE) # y18n [![NPM version][npm-image]][npm-url] [![js-standard-style][standard-image]][standard-url] [](https://conventionalcommits.org) The bare-bones internationalization library used by yargs. Inspired by [i18n](https://www.npmjs.com/package/i18n). ## Examples _simple string translation:_ ```js const __ = require('y18n')().__; console.log(__('my awesome string %s', 'foo')); ``` output: `my awesome string foo` _using tagged template literals_ ```js const __ = require('y18n')().__; const str = 'foo'; console.log(__`my awesome string ${str}`); ``` output: `my awesome string foo` _pluralization support:_ ```js const __n = require('y18n')().__n; console.log(__n('one fish %s', '%d fishes %s', 2, 'foo')); ``` output: `2 fishes foo` ## Deno Example As of `v5` `y18n` supports [Deno](https://github.com/denoland/deno): ```typescript import y18n from "https://deno.land/x/y18n/deno.ts"; const __ = y18n({ locale: 'pirate', directory: './test/locales' }).__ console.info(__`Hi, ${'Ben'} ${'Coe'}!`) ``` You will need to run with `--allow-read` to load alternative locales. ## JSON Language Files The JSON language files should be stored in a `./locales` folder. File names correspond to locales, e.g., `en.json`, `pirate.json`. When strings are observed for the first time they will be added to the JSON file corresponding to the current locale. ## Methods ### require('y18n')(config) Create an instance of y18n with the config provided, options include: * `directory`: the locale directory, default `./locales`. * `updateFiles`: should newly observed strings be updated in file, default `true`. * `locale`: what locale should be used. * `fallbackToLanguage`: should fallback to a language-only file (e.g. `en.json`) be allowed if a file matching the locale does not exist (e.g. `en_US.json`), default `true`. ### y18n.\_\_(str, arg, arg, arg) Print a localized string, `%s` will be replaced with `arg`s. This function can also be used as a tag for a template literal. You can use it like this: <code>__&#96;hello ${'world'}&#96;</code>. This will be equivalent to `__('hello %s', 'world')`. ### y18n.\_\_n(singularString, pluralString, count, arg, arg, arg) Print a localized string with appropriate pluralization. If `%d` is provided in the string, the `count` will replace this placeholder. ### y18n.setLocale(str) Set the current locale being used. ### y18n.getLocale() What locale is currently being used? ### y18n.updateLocale(obj) Update the current locale with the key value pairs in `obj`. ## Supported Node.js Versions Libraries in this ecosystem make a best effort to track [Node.js' release schedule](https://nodejs.org/en/about/releases/). Here's [a post on why we think this is important](https://medium.com/the-node-js-collection/maintainers-should-consider-following-node-js-release-schedule-ab08ed4de71a). ## License ISC [npm-url]: https://npmjs.org/package/y18n [npm-image]: https://img.shields.io/npm/v/y18n.svg [standard-image]: https://img.shields.io/badge/code%20style-standard-brightgreen.svg [standard-url]: https://github.com/feross/standard # ansi-colors [](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W8YFZ425KND68) [](https://www.npmjs.com/package/ansi-colors) [](https://npmjs.org/package/ansi-colors) [](https://npmjs.org/package/ansi-colors) [](https://travis-ci.org/doowb/ansi-colors) > Easily add ANSI colors to your text and symbols in the terminal. A faster drop-in replacement for chalk, kleur and turbocolor (without the dependencies and rendering bugs). Please consider following this project's author, [Brian Woodward](https://github.com/doowb), and consider starring the project to show your :heart: and support. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save ansi-colors ```  ## Why use this? ansi-colors is _the fastest Node.js library for terminal styling_. A more performant drop-in replacement for chalk, with no dependencies. * _Blazing fast_ - Fastest terminal styling library in node.js, 10-20x faster than chalk! * _Drop-in replacement_ for [chalk](https://github.com/chalk/chalk). * _No dependencies_ (Chalk has 7 dependencies in its tree!) * _Safe_ - Does not modify the `String.prototype` like [colors](https://github.com/Marak/colors.js). * Supports [nested colors](#nested-colors), **and does not have the [nested styling bug](#nested-styling-bug) that is present in [colorette](https://github.com/jorgebucaran/colorette), [chalk](https://github.com/chalk/chalk), and [kleur](https://github.com/lukeed/kleur)**. * Supports [chained colors](#chained-colors). * [Toggle color support](#toggle-color-support) on or off. ## Usage ```js const c = require('ansi-colors'); console.log(c.red('This is a red string!')); console.log(c.green('This is a red string!')); console.log(c.cyan('This is a cyan string!')); console.log(c.yellow('This is a yellow string!')); ```  ## Chained colors ```js console.log(c.bold.red('this is a bold red message')); console.log(c.bold.yellow.italic('this is a bold yellow italicized message')); console.log(c.green.bold.underline('this is a bold green underlined message')); ```  ## Nested colors ```js console.log(c.yellow(`foo ${c.red.bold('red')} bar ${c.cyan('cyan')} baz`)); ```  ### Nested styling bug `ansi-colors` does not have the nested styling bug found in [colorette](https://github.com/jorgebucaran/colorette), [chalk](https://github.com/chalk/chalk), and [kleur](https://github.com/lukeed/kleur). ```js const { bold, red } = require('ansi-styles'); console.log(bold(`foo ${red.dim('bar')} baz`)); const colorette = require('colorette'); console.log(colorette.bold(`foo ${colorette.red(colorette.dim('bar'))} baz`)); const kleur = require('kleur'); console.log(kleur.bold(`foo ${kleur.red.dim('bar')} baz`)); const chalk = require('chalk'); console.log(chalk.bold(`foo ${chalk.red.dim('bar')} baz`)); ``` **Results in the following** (sans icons and labels)  ## Toggle color support Easily enable/disable colors. ```js const c = require('ansi-colors'); // disable colors manually c.enabled = false; // or use a library to automatically detect support c.enabled = require('color-support').hasBasic; console.log(c.red('I will only be colored red if the terminal supports colors')); ``` ## Strip ANSI codes Use the `.unstyle` method to strip ANSI codes from a string. ```js console.log(c.unstyle(c.blue.bold('foo bar baz'))); //=> 'foo bar baz' ``` ## Available styles **Note** that bright and bright-background colors are not always supported. | Colors | Background Colors | Bright Colors | Bright Background Colors | | ------- | ----------------- | ------------- | ------------------------ | | black | bgBlack | blackBright | bgBlackBright | | red | bgRed | redBright | bgRedBright | | green | bgGreen | greenBright | bgGreenBright | | yellow | bgYellow | yellowBright | bgYellowBright | | blue | bgBlue | blueBright | bgBlueBright | | magenta | bgMagenta | magentaBright | bgMagentaBright | | cyan | bgCyan | cyanBright | bgCyanBright | | white | bgWhite | whiteBright | bgWhiteBright | | gray | | | | | grey | | | | _(`gray` is the U.S. spelling, `grey` is more commonly used in the Canada and U.K.)_ ### Style modifiers * dim * **bold** * hidden * _italic_ * underline * inverse * ~~strikethrough~~ * reset ## Aliases Create custom aliases for styles. ```js const colors = require('ansi-colors'); colors.alias('primary', colors.yellow); colors.alias('secondary', colors.bold); console.log(colors.primary.secondary('Foo')); ``` ## Themes A theme is an object of custom aliases. ```js const colors = require('ansi-colors'); colors.theme({ danger: colors.red, dark: colors.dim.gray, disabled: colors.gray, em: colors.italic, heading: colors.bold.underline, info: colors.cyan, muted: colors.dim, primary: colors.blue, strong: colors.bold, success: colors.green, underline: colors.underline, warning: colors.yellow }); // Now, we can use our custom styles alongside the built-in styles! console.log(colors.danger.strong.em('Error!')); console.log(colors.warning('Heads up!')); console.log(colors.info('Did you know...')); console.log(colors.success.bold('It worked!')); ``` ## Performance **Libraries tested** * ansi-colors v3.0.4 * chalk v2.4.1 ### Mac > MacBook Pro, Intel Core i7, 2.3 GHz, 16 GB. **Load time** Time it takes to load the first time `require()` is called: * ansi-colors - `1.915ms` * chalk - `12.437ms` **Benchmarks** ``` # All Colors ansi-colors x 173,851 ops/sec ±0.42% (91 runs sampled) chalk x 9,944 ops/sec ±2.53% (81 runs sampled))) # Chained colors ansi-colors x 20,791 ops/sec ±0.60% (88 runs sampled) chalk x 2,111 ops/sec ±2.34% (83 runs sampled) # Nested colors ansi-colors x 59,304 ops/sec ±0.98% (92 runs sampled) chalk x 4,590 ops/sec ±2.08% (82 runs sampled) ``` ### Windows > Windows 10, Intel Core i7-7700k CPU @ 4.2 GHz, 32 GB **Load time** Time it takes to load the first time `require()` is called: * ansi-colors - `1.494ms` * chalk - `11.523ms` **Benchmarks** ``` # All Colors ansi-colors x 193,088 ops/sec ±0.51% (95 runs sampled)) chalk x 9,612 ops/sec ±3.31% (77 runs sampled))) # Chained colors ansi-colors x 26,093 ops/sec ±1.13% (94 runs sampled) chalk x 2,267 ops/sec ±2.88% (80 runs sampled)) # Nested colors ansi-colors x 67,747 ops/sec ±0.49% (93 runs sampled) chalk x 4,446 ops/sec ±3.01% (82 runs sampled)) ``` ## About <details> <summary><strong>Contributing</strong></summary> Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). </details> <details> <summary><strong>Running Tests</strong></summary> Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` </details> <details> <summary><strong>Building docs</strong></summary> _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` </details> ### Related projects You might also be interested in these projects: * [ansi-wrap](https://www.npmjs.com/package/ansi-wrap): Create ansi colors by passing the open and close codes. | [homepage](https://github.com/jonschlinkert/ansi-wrap "Create ansi colors by passing the open and close codes.") * [strip-color](https://www.npmjs.com/package/strip-color): Strip ANSI color codes from a string. No dependencies. | [homepage](https://github.com/jonschlinkert/strip-color "Strip ANSI color codes from a string. No dependencies.") ### Contributors | **Commits** | **Contributor** | | --- | --- | | 48 | [jonschlinkert](https://github.com/jonschlinkert) | | 42 | [doowb](https://github.com/doowb) | | 6 | [lukeed](https://github.com/lukeed) | | 2 | [Silic0nS0ldier](https://github.com/Silic0nS0ldier) | | 1 | [dwieeb](https://github.com/dwieeb) | | 1 | [jorgebucaran](https://github.com/jorgebucaran) | | 1 | [madhavarshney](https://github.com/madhavarshney) | | 1 | [chapterjason](https://github.com/chapterjason) | ### Author **Brian Woodward** * [GitHub Profile](https://github.com/doowb) * [Twitter Profile](https://twitter.com/doowb) * [LinkedIn Profile](https://linkedin.com/in/woodwardbrian) ### License Copyright © 2019, [Brian Woodward](https://github.com/doowb). Released under the [MIT License](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.8.0, on July 01, 2019._ # inflight Add callbacks to requests in flight to avoid async duplication ## USAGE ```javascript var inflight = require('inflight') // some request that does some stuff function req(key, callback) { // key is any random string. like a url or filename or whatever. // // will return either a falsey value, indicating that the // request for this key is already in flight, or a new callback // which when called will call all callbacks passed to inflightk // with the same key callback = inflight(key, callback) // If we got a falsey value back, then there's already a req going if (!callback) return // this is where you'd fetch the url or whatever // callback is also once()-ified, so it can safely be assigned // to multiple events etc. First call wins. setTimeout(function() { callback(null, key) }, 100) } // only assigns a single setTimeout // when it dings, all cbs get called req('foo', cb1) req('foo', cb2) req('foo', cb3) req('foo', cb4) ``` # assemblyscript-json   JSON encoder / decoder for AssemblyScript. Special thanks to https://github.com/MaxGraey/bignum.wasm for basic unit testing infra for AssemblyScript. ## Installation `assemblyscript-json` is available as a [npm package](https://www.npmjs.com/package/assemblyscript-json). You can install `assemblyscript-json` in your AssemblyScript project by running: `npm install --save assemblyscript-json` ## Usage ### Parsing JSON ```typescript import { JSON } from "assemblyscript-json"; // Parse an object using the JSON object let jsonObj: JSON.Obj = <JSON.Obj>(JSON.parse('{"hello": "world", "value": 24}')); // We can then use the .getX functions to read from the object if you know it's type // This will return the appropriate JSON.X value if the key exists, or null if the key does not exist let worldOrNull: JSON.Str | null = jsonObj.getString("hello"); // This will return a JSON.Str or null if (worldOrNull != null) { // use .valueOf() to turn the high level JSON.Str type into a string let world: string = worldOrNull.valueOf(); } let numOrNull: JSON.Num | null = jsonObj.getNum("value"); if (numOrNull != null) { // use .valueOf() to turn the high level JSON.Num type into a f64 let value: f64 = numOrNull.valueOf(); } // If you don't know the value type, get the parent JSON.Value let valueOrNull: JSON.Value | null = jsonObj.getValue("hello"); if (valueOrNull != null) { let value = <JSON.Value>valueOrNull; // Next we could figure out what type we are if(value.isString) { // value.isString would be true, so we can cast to a string let innerString = (<JSON.Str>value).valueOf(); let jsonString = (<JSON.Str>value).stringify(); // Do something with string value } } ``` ### Encoding JSON ```typescript import { JSONEncoder } from "assemblyscript-json"; // Create encoder let encoder = new JSONEncoder(); // Construct necessary object encoder.pushObject("obj"); encoder.setInteger("int", 10); encoder.setString("str", ""); encoder.popObject(); // Get serialized data let json: Uint8Array = encoder.serialize(); // Or get serialized data as string let jsonString: string = encoder.stringify(); assert(jsonString, '"obj": {"int": 10, "str": ""}'); // True! ``` ### Custom JSON Deserializers ```typescript import { JSONDecoder, JSONHandler } from "assemblyscript-json"; // Events need to be received by custom object extending JSONHandler. // NOTE: All methods are optional to implement. class MyJSONEventsHandler extends JSONHandler { setString(name: string, value: string): void { // Handle field } setBoolean(name: string, value: bool): void { // Handle field } setNull(name: string): void { // Handle field } setInteger(name: string, value: i64): void { // Handle field } setFloat(name: string, value: f64): void { // Handle field } pushArray(name: string): bool { // Handle array start // true means that nested object needs to be traversed, false otherwise // Note that returning false means JSONDecoder.startIndex need to be updated by handler return true; } popArray(): void { // Handle array end } pushObject(name: string): bool { // Handle object start // true means that nested object needs to be traversed, false otherwise // Note that returning false means JSONDecoder.startIndex need to be updated by handler return true; } popObject(): void { // Handle object end } } // Create decoder let decoder = new JSONDecoder<MyJSONEventsHandler>(new MyJSONEventsHandler()); // Create a byte buffer of our JSON. NOTE: Deserializers work on UTF8 string buffers. let jsonString = '{"hello": "world"}'; let jsonBuffer = Uint8Array.wrap(String.UTF8.encode(jsonString)); // Parse JSON decoder.deserialize(jsonBuffer); // This will send events to MyJSONEventsHandler ``` Feel free to look through the [tests](https://github.com/nearprotocol/assemblyscript-json/tree/master/assembly/__tests__) for more usage examples. ## Reference Documentation Reference API Documentation can be found in the [docs directory](./docs). ## License [MIT](./LICENSE) # `asbuild` [](https://github.com/AssemblyScript/asbuild/stargazers) *A simple build tool for [AssemblyScript](https://assemblyscript.org) projects, similar to `cargo`, etc.* ## 🚩 Table of Contents - [Installing](#-installing) - [Usage](#-usage) - [`asb init`](#asb-init---create-an-empty-project) - [`asb test`](#asb-test---run-as-pect-tests) - [`asb fmt`](#asb-fmt---format-as-files-using-eslint) - [`asb run`](#asb-run---run-a-wasi-binary) - [`asb build`](#asb-build---compile-the-project-using-asc) - [Background](#-background) ## 🔧 Installing Install it globally ``` npm install -g asbuild ``` Or, locally as dev dependencies ``` npm install --save-dev asbuild ``` ## 💡 Usage ``` Build tool for AssemblyScript projects. Usage: asb [command] [options] Commands: asb Alias of build command, to maintain back-ward compatibility [default] asb build Compile a local package and all of its dependencies [aliases: compile, make] asb init [baseDir] Create a new AS package in an given directory asb test Run as-pect tests asb fmt [paths..] This utility formats current module using eslint. [aliases: format, lint] Options: --version Show version number [boolean] --help Show help [boolean] ``` ### `asb init` - Create an empty project ``` asb init [baseDir] Create a new AS package in an given directory Positionals: baseDir Create a sample AS project in this directory [string] [default: "."] Options: --version Show version number [boolean] --help Show help [boolean] --yes Skip the interactive prompt [boolean] [default: false] ``` ### `asb test` - Run as-pect tests ``` asb test Run as-pect tests USAGE: asb test [options] -- [aspect_options] Options: --version Show version number [boolean] --help Show help [boolean] --verbose, --vv Print out arguments passed to as-pect [boolean] [default: false] ``` ### `asb fmt` - Format AS files using ESlint ``` asb fmt [paths..] This utility formats current module using eslint. Positionals: paths Paths to format [array] [default: ["."]] Initialisation: --init Generates recommended eslint config for AS Projects [boolean] Miscellaneous --lint, --dry-run Tries to fix problems without saving the changes to the file system [boolean] [default: false] Options: --version Show version number [boolean] --help Show help ``` ### `asb run` - Run a WASI binary ``` asb run Run a WASI binary USAGE: asb run [options] [binary path] -- [binary options] Positionals: binary path to Wasm binary [string] [required] Options: --version Show version number [boolean] --help Show help [boolean] --preopen, -p comma separated list of directories to open. [default: "."] ``` ### `asb build` - Compile the project using asc ``` asb build Compile a local package and all of its dependencies USAGE: asb build [entry_file] [options] -- [asc_options] Options: --version Show version number [boolean] --help Show help [boolean] --baseDir, -d Base directory of project. [string] [default: "."] --config, -c Path to asconfig file [string] [default: "./asconfig.json"] --wat Output wat file to outDir [boolean] [default: false] --outDir Directory to place built binaries. Default "./build/<target>/" [string] --target Target for compilation [string] [default: "release"] --verbose Print out arguments passed to asc [boolean] [default: false] Examples: asb build Build release of 'assembly/index.ts to build/release/packageName.wasm asb build --target release Build a release binary asb build -- --measure Pass argument to 'asc' ``` #### Defaults ##### Project structure ``` project/ package.json asconfig.json assembly/ index.ts build/ release/ project.wasm debug/ project.wasm ``` - If no entry file passed and no `entry` field is in `asconfig.json`, `project/assembly/index.ts` is assumed. - `asconfig.json` allows for options for different compile targets, e.g. release, debug, etc. `asc` defaults to the release target. - The default build directory is `./build`, and artifacts are placed at `./build/<target>/packageName.wasm`. ##### Workspaces If a `workspace` field is added to a top level `asconfig.json` file, then each path in the array is built and placed into the top level `outDir`. For example, `asconfig.json`: ```json { "workspaces": ["a", "b"] } ``` Running `asb` in the directory below will use the top level build directory to place all the binaries. ``` project/ package.json asconfig.json a/ asconfig.json assembly/ index.ts b/ asconfig.json assembly/ index.ts build/ release/ a.wasm b.wasm debug/ a.wasm b.wasm ``` To see an example in action check out the [test workspace](./tests/build_test) ## 📖 Background Asbuild started as wrapper around `asc` to provide an easier CLI interface and now has been extened to support other commands like `init`, `test` and `fmt` just like `cargo` to become a one stop build tool for AS Projects. ## 📜 License This library is provided under the open-source [MIT license](https://choosealicense.com/licenses/mit/). # set-blocking [](https://travis-ci.org/yargs/set-blocking) [](https://www.npmjs.com/package/set-blocking) [](https://coveralls.io/r/yargs/set-blocking?branch=master) [](https://github.com/conventional-changelog/standard-version) set blocking `stdio` and `stderr` ensuring that terminal output does not truncate. ```js const setBlocking = require('set-blocking') setBlocking(true) console.log(someLargeStringToOutput) ``` ## Historical Context/Word of Warning This was created as a shim to address the bug discussed in [node #6456](https://github.com/nodejs/node/issues/6456). This bug crops up on newer versions of Node.js (`0.12+`), truncating terminal output. You should be mindful of the side-effects caused by using `set-blocking`: * if your module sets blocking to `true`, it will effect other modules consuming your library. In [yargs](https://github.com/yargs/yargs/blob/master/yargs.js#L653) we only call `setBlocking(true)` once we already know we are about to call `process.exit(code)`. * this patch will not apply to subprocesses spawned with `isTTY = true`, this is the [default `spawn()` behavior](https://nodejs.org/api/child_process.html#child_process_child_process_spawn_command_args_options). ## License ISC iMurmurHash.js ============== An incremental implementation of the MurmurHash3 (32-bit) hashing algorithm for JavaScript based on [Gary Court's implementation](https://github.com/garycourt/murmurhash-js) with [kazuyukitanimura's modifications](https://github.com/kazuyukitanimura/murmurhash-js). This version works significantly faster than the non-incremental version if you need to hash many small strings into a single hash, since string concatenation (to build the single string to pass the non-incremental version) is fairly costly. In one case tested, using the incremental version was about 50% faster than concatenating 5-10 strings and then hashing. Installation ------------ To use iMurmurHash in the browser, [download the latest version](https://raw.github.com/jensyt/imurmurhash-js/master/imurmurhash.min.js) and include it as a script on your site. ```html <script type="text/javascript" src="/scripts/imurmurhash.min.js"></script> <script> // Your code here, access iMurmurHash using the global object MurmurHash3 </script> ``` --- To use iMurmurHash in Node.js, install the module using NPM: ```bash npm install imurmurhash ``` Then simply include it in your scripts: ```javascript MurmurHash3 = require('imurmurhash'); ``` Quick Example ------------- ```javascript // Create the initial hash var hashState = MurmurHash3('string'); // Incrementally add text hashState.hash('more strings'); hashState.hash('even more strings'); // All calls can be chained if desired hashState.hash('and').hash('some').hash('more'); // Get a result hashState.result(); // returns 0xe4ccfe6b ``` Functions --------- ### MurmurHash3 ([string], [seed]) Get a hash state object, optionally initialized with the given _string_ and _seed_. _Seed_ must be a positive integer if provided. Calling this function without the `new` keyword will return a cached state object that has been reset. This is safe to use as long as the object is only used from a single thread and no other hashes are created while operating on this one. If this constraint cannot be met, you can use `new` to create a new state object. For example: ```javascript // Use the cached object, calling the function again will return the same // object (but reset, so the current state would be lost) hashState = MurmurHash3(); ... // Create a new object that can be safely used however you wish. Calling the // function again will simply return a new state object, and no state loss // will occur, at the cost of creating more objects. hashState = new MurmurHash3(); ``` Both methods can be mixed however you like if you have different use cases. --- ### MurmurHash3.prototype.hash (string) Incrementally add _string_ to the hash. This can be called as many times as you want for the hash state object, including after a call to `result()`. Returns `this` so calls can be chained. --- ### MurmurHash3.prototype.result () Get the result of the hash as a 32-bit positive integer. This performs the tail and finalizer portions of the algorithm, but does not store the result in the state object. This means that it is perfectly safe to get results and then continue adding strings via `hash`. ```javascript // Do the whole string at once MurmurHash3('this is a test string').result(); // 0x70529328 // Do part of the string, get a result, then the other part var m = MurmurHash3('this is a'); m.result(); // 0xbfc4f834 m.hash(' test string').result(); // 0x70529328 (same as above) ``` --- ### MurmurHash3.prototype.reset ([seed]) Reset the state object for reuse, optionally using the given _seed_ (defaults to 0 like the constructor). Returns `this` so calls can be chained. --- License (MIT) ------------- Copyright (c) 2013 Gary Court, Jens Taylor Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # hasurl [![NPM Version][npm-image]][npm-url] [![Build Status][travis-image]][travis-url] > Determine whether Node.js' native [WHATWG `URL`](https://nodejs.org/api/url.html#url_the_whatwg_url_api) implementation is available. ## Installation [Node.js](http://nodejs.org/) `>= 4` is required. To install, type this at the command line: ```shell npm install hasurl ``` ## Usage ```js const hasURL = require('hasurl'); if (hasURL()) { // supported } else { // fallback } ``` [npm-image]: https://img.shields.io/npm/v/hasurl.svg [npm-url]: https://npmjs.org/package/hasurl [travis-image]: https://img.shields.io/travis/stevenvachon/hasurl.svg [travis-url]: https://travis-ci.org/stevenvachon/hasurl # Punycode.js [](https://travis-ci.org/bestiejs/punycode.js) [](https://codecov.io/gh/bestiejs/punycode.js) [](https://gemnasium.com/bestiejs/punycode.js) Punycode.js is a robust Punycode converter that fully complies to [RFC 3492](https://tools.ietf.org/html/rfc3492) and [RFC 5891](https://tools.ietf.org/html/rfc5891). This JavaScript library is the result of comparing, optimizing and documenting different open-source implementations of the Punycode algorithm: * [The C example code from RFC 3492](https://tools.ietf.org/html/rfc3492#appendix-C) * [`punycode.c` by _Markus W. Scherer_ (IBM)](http://opensource.apple.com/source/ICU/ICU-400.42/icuSources/common/punycode.c) * [`punycode.c` by _Ben Noordhuis_](https://github.com/bnoordhuis/punycode/blob/master/punycode.c) * [JavaScript implementation by _some_](http://stackoverflow.com/questions/183485/can-anyone-recommend-a-good-free-javascript-for-punycode-to-unicode-conversion/301287#301287) * [`punycode.js` by _Ben Noordhuis_](https://github.com/joyent/node/blob/426298c8c1c0d5b5224ac3658c41e7c2a3fe9377/lib/punycode.js) (note: [not fully compliant](https://github.com/joyent/node/issues/2072)) This project was [bundled](https://github.com/joyent/node/blob/master/lib/punycode.js) with Node.js from [v0.6.2+](https://github.com/joyent/node/compare/975f1930b1...61e796decc) until [v7](https://github.com/nodejs/node/pull/7941) (soft-deprecated). The current version supports recent versions of Node.js only. It provides a CommonJS module and an ES6 module. For the old version that offers the same functionality with broader support, including Rhino, Ringo, Narwhal, and web browsers, see [v1.4.1](https://github.com/bestiejs/punycode.js/releases/tag/v1.4.1). ## Installation Via [npm](https://www.npmjs.com/): ```bash npm install punycode --save ``` In [Node.js](https://nodejs.org/): ```js const punycode = require('punycode'); ``` ## API ### `punycode.decode(string)` Converts a Punycode string of ASCII symbols to a string of Unicode symbols. ```js // decode domain name parts punycode.decode('maana-pta'); // 'mañana' punycode.decode('--dqo34k'); // '☃-⌘' ``` ### `punycode.encode(string)` Converts a string of Unicode symbols to a Punycode string of ASCII symbols. ```js // encode domain name parts punycode.encode('mañana'); // 'maana-pta' punycode.encode('☃-⌘'); // '--dqo34k' ``` ### `punycode.toUnicode(input)` Converts a Punycode string representing a domain name or an email address to Unicode. Only the Punycoded parts of the input will be converted, i.e. it doesn’t matter if you call it on a string that has already been converted to Unicode. ```js // decode domain names punycode.toUnicode('xn--maana-pta.com'); // → 'mañana.com' punycode.toUnicode('xn----dqo34k.com'); // → '☃-⌘.com' // decode email addresses punycode.toUnicode('джумла@xn--p-8sbkgc5ag7bhce.xn--ba-lmcq'); // → 'джумла@джpумлатест.bрфa' ``` ### `punycode.toASCII(input)` Converts a lowercased Unicode string representing a domain name or an email address to Punycode. Only the non-ASCII parts of the input will be converted, i.e. it doesn’t matter if you call it with a domain that’s already in ASCII. ```js // encode domain names punycode.toASCII('mañana.com'); // → 'xn--maana-pta.com' punycode.toASCII('☃-⌘.com'); // → 'xn----dqo34k.com' // encode email addresses punycode.toASCII('джумла@джpумлатест.bрфa'); // → 'джумла@xn--p-8sbkgc5ag7bhce.xn--ba-lmcq' ``` ### `punycode.ucs2` #### `punycode.ucs2.decode(string)` Creates an array containing the numeric code point values of each Unicode symbol in the string. While [JavaScript uses UCS-2 internally](https://mathiasbynens.be/notes/javascript-encoding), this function will convert a pair of surrogate halves (each of which UCS-2 exposes as separate characters) into a single code point, matching UTF-16. ```js punycode.ucs2.decode('abc'); // → [0x61, 0x62, 0x63] // surrogate pair for U+1D306 TETRAGRAM FOR CENTRE: punycode.ucs2.decode('\uD834\uDF06'); // → [0x1D306] ``` #### `punycode.ucs2.encode(codePoints)` Creates a string based on an array of numeric code point values. ```js punycode.ucs2.encode([0x61, 0x62, 0x63]); // → 'abc' punycode.ucs2.encode([0x1D306]); // → '\uD834\uDF06' ``` ### `punycode.version` A string representing the current Punycode.js version number. ## Author | [](https://twitter.com/mathias "Follow @mathias on Twitter") | |---| | [Mathias Bynens](https://mathiasbynens.be/) | ## License Punycode.js is available under the [MIT](https://mths.be/mit) license. # eslint-visitor-keys [](https://www.npmjs.com/package/eslint-visitor-keys) [](http://www.npmtrends.com/eslint-visitor-keys) [](https://travis-ci.org/eslint/eslint-visitor-keys) [](https://david-dm.org/eslint/eslint-visitor-keys) Constants and utilities about visitor keys to traverse AST. ## 💿 Installation Use [npm] to install. ```bash $ npm install eslint-visitor-keys ``` ### Requirements - [Node.js] 10.0.0 or later. ## 📖 Usage ```js const evk = require("eslint-visitor-keys") ``` ### evk.KEYS > type: `{ [type: string]: string[] | undefined }` Visitor keys. This keys are frozen. This is an object. Keys are the type of [ESTree] nodes. Their values are an array of property names which have child nodes. For example: ``` console.log(evk.KEYS.AssignmentExpression) // → ["left", "right"] ``` ### evk.getKeys(node) > type: `(node: object) => string[]` Get the visitor keys of a given AST node. This is similar to `Object.keys(node)` of ES Standard, but some keys are excluded: `parent`, `leadingComments`, `trailingComments`, and names which start with `_`. This will be used to traverse unknown nodes. For example: ``` const node = { type: "AssignmentExpression", left: { type: "Identifier", name: "foo" }, right: { type: "Literal", value: 0 } } console.log(evk.getKeys(node)) // → ["type", "left", "right"] ``` ### evk.unionWith(additionalKeys) > type: `(additionalKeys: object) => { [type: string]: string[] | undefined }` Make the union set with `evk.KEYS` and the given keys. - The order of keys is, `additionalKeys` is at first, then `evk.KEYS` is concatenated after that. - It removes duplicated keys as keeping the first one. For example: ``` console.log(evk.unionWith({ MethodDefinition: ["decorators"] })) // → { ..., MethodDefinition: ["decorators", "key", "value"], ... } ``` ## 📰 Change log See [GitHub releases](https://github.com/eslint/eslint-visitor-keys/releases). ## 🍻 Contributing Welcome. See [ESLint contribution guidelines](https://eslint.org/docs/developer-guide/contributing/). ### Development commands - `npm test` runs tests and measures code coverage. - `npm run lint` checks source codes with ESLint. - `npm run coverage` opens the code coverage report of the previous test with your default browser. - `npm run release` publishes this package to [npm] registory. [npm]: https://www.npmjs.com/ [Node.js]: https://nodejs.org/en/ [ESTree]: https://github.com/estree/estree

gadillacer_nft141-v1-contracts

nft Cargo.toml build.sh src lib.rs nft141factory Cargo.toml build.sh src lib.rs nft141pair Cargo.toml build.sh src lib.rs metadata.rs

NhaDinh1502_NearStakingPool

README.md near-staking-pool .gitpod.yml Cargo.toml README.md build.sh compile.js deploy.sh ft-contract Cargo.toml README.md build.sh neardev dev-account.env src lib.rs src account.rs config.rs cross_contract_call.rs internal.rs lib.rs utils.rs

near-staking-pool Smart Contract ================== A [smart contract] written in [Rust] for an app initialized with [create-near-app] Quick Start =========== Before you compile this code, you will need to install Rust with [correct target] Exploring The Code ================== 1. The main smart contract code lives in `src/lib.rs`. You can compile it with the `./compile` script. 2. Tests: You can run smart contract tests with the `./test` script. This runs standard Rust tests using [cargo] with a `--nocapture` flag so that you can see any debug info you print to the console. [smart contract]: https://docs.near.org/docs/develop/contracts/overview [Rust]: https://www.rust-lang.org/ [create-near-app]: https://github.com/near/create-near-app [correct target]: https://github.com/near/near-sdk-rs#pre-requisites [cargo]: https://doc.rust-lang.org/book/ch01-03-hello-cargo.html Fungible Token (FT) =================== Example implementation of a [Fungible Token] contract which uses [near-contract-standards] and [simulation] tests. This is a contract-only example. [Fungible Token]: https://nomicon.io/Standards/FungibleToken/Core.html [near-contract-standards]: https://github.com/near/near-sdk-rs/tree/master/near-contract-standards [simulation]: https://github.com/near/near-sdk-rs/tree/master/near-sdk-sim Prerequisites ============= If you're using Gitpod, you can skip this step. 1. Make sure Rust is installed per the prerequisites in [`near-sdk-rs`](https://github.com/near/near-sdk-rs#pre-requisites) 2. Ensure `near-cli` is installed by running `near --version`. If not installed, install with: `npm install -g near-cli` ## Building To build run: ```bash ./build.sh ``` Using this contract =================== ### Quickest deploy You can build and deploy this smart contract to a development account. [Dev Accounts](https://docs.near.org/docs/concepts/account#dev-accounts) are auto-generated accounts to assist in developing and testing smart contracts. Please see the [Standard deploy](#standard-deploy) section for creating a more personalized account to deploy to. ```bash near dev-deploy --wasmFile res/fungible_token.wasm --helperUrl https://near-contract-helper.onrender.com ``` Behind the scenes, this is creating an account and deploying a contract to it. On the console, notice a message like: >Done deploying to dev-1234567890123 In this instance, the account is `dev-1234567890123`. A file has been created containing a key pair to the account, located at `neardev/dev-account`. To make the next few steps easier, we're going to set an environment variable containing this development account id and use that when copy/pasting commands. Run this command to the environment variable: ```bash source neardev/dev-account.env ``` You can tell if the environment variable is set correctly if your command line prints the account name after this command: ```bash echo $CONTRACT_NAME ``` The next command will initialize the contract using the `new` method: ```bash near call $CONTRACT_NAME new '{"owner_id": "'$CONTRACT_NAME'", "total_supply": "1000000000000000", "metadata": { "spec": "ft-1.0.0", "name": "Example Token Name", "symbol": "EXLT", "decimals": 8 }}' --accountId $CONTRACT_NAME ``` To get the fungible token metadata: ```bash near view $CONTRACT_NAME ft_metadata ``` ### Standard deploy This smart contract will get deployed to your NEAR account. For this example, please create a new NEAR account. Because NEAR allows the ability to upgrade contracts on the same account, initialization functions must be cleared. If you'd like to run this example on a NEAR account that has had prior contracts deployed, please use the `near-cli` command `near delete`, and then recreate it in Wallet. To create (or recreate) an account, please follow the directions on [NEAR Wallet](https://wallet.near.org/). Switch to `mainnet`. You can skip this step to use `testnet` as a default network. export NEAR_ENV=mainnet In the project root, log in to your newly created account with `near-cli` by following the instructions after this command: near login To make this tutorial easier to copy/paste, we're going to set an environment variable for your account id. In the below command, replace `MY_ACCOUNT_NAME` with the account name you just logged in with, including the `.near`: ID=MY_ACCOUNT_NAME You can tell if the environment variable is set correctly if your command line prints the account name after this command: echo $ID Now we can deploy the compiled contract in this example to your account: near deploy --wasmFile res/fungible_token.wasm --accountId $ID FT contract should be initialized before usage. You can read more about metadata at ['nomicon.io'](https://nomicon.io/Standards/FungibleToken/Metadata.html#reference-level-explanation). Modify the parameters and create a token: near call $ID new '{"owner_id": "'$ID'", "total_supply": "1000000000000000", "metadata": { "spec": "ft-1.0.0", "name": "Example Token Name", "symbol": "EXLT", "decimals": 8 }}' --accountId $ID Get metadata: near view $ID ft_metadata Transfer Example --------------- Let's set up an account to transfer some tokens to. These account will be a sub-account of the NEAR account you logged in with. near create-account bob.$ID --masterAccount $ID --initialBalance 1 Add storage deposit for Bob's account: near call $ID storage_deposit '' --accountId bob.$ID --amount 0.00125 Check balance of Bob's account, it should be `0` for now: near view $ID ft_balance_of '{"account_id": "'bob.$ID'"}' Transfer tokens to Bob from the contract that minted these fungible tokens, exactly 1 yoctoNEAR of deposit should be attached: near call $ID ft_transfer '{"receiver_id": "'bob.$ID'", "amount": "19"}' --accountId $ID --amount 0.000000000000000000000001 Check the balance of Bob again with the command from before and it will now return `19`. ## Testing As with many Rust libraries and contracts, there are tests in the main fungible token implementation at `ft/src/lib.rs`. Additionally, this project has [simulation] tests in `tests/sim`. Simulation tests allow testing cross-contract calls, which is crucial to ensuring that the `ft_transfer_call` function works properly. These simulation tests are the reason this project has the file structure it does. Note that the root project has a `Cargo.toml` which sets it up as a workspace. `ft` and `test-contract-defi` are both small & focused contract projects, the latter only existing for simulation tests. The root project imports `near-sdk-sim` and tests interaction between these contracts. You can run all these tests with one command: ```bash cargo test ``` If you want to run only simulation tests, you can use `cargo test simulate`, since all the simulation tests include "simulate" in their names. ## Notes - The maximum balance value is limited by U128 (`2**128 - 1`). - JSON calls should pass U128 as a base-10 string. E.g. "100". - This does not include escrow functionality, as `ft_transfer_call` provides a superior approach. An escrow system can, of course, be added as a separate contract or additional functionality within this contract. ## No AssemblyScript? [near-contract-standards] is currently Rust-only. We strongly suggest using this library to create your own Fungible Token contract to ensure it works as expected. Someday NEAR core or community contributors may provide a similar library for AssemblyScript, at which point this example will be updated to include both a Rust and AssemblyScript version. # NearStakingPool My first project on Near

GildedHonour_antioquia_smart_contracts

README.md README_RU.md donation Cargo.toml README.md build.sh deploy.sh dev-deploy.sh src lib.rs escrow .rustfmt.toml Cargo.toml README.md build.sh deploy.sh dev-deploy.sh my_notes 1.txt src lib.rs lottery Cargo.toml README.md build.sh deploy.sh dev-deploy.sh src lib.rs

# Antioquia smart contracts ## Escrow on testnet: [escrow.antioquia.testnet](https://explorer.testnet.near.org/accounts/escrow.antioquia.testnet) [description](escrow/README.md) ## Lottery on testnet: [lottery.antioquia.testnet](https://explorer.testnet.near.org/accounts/lottery.antioquia.testnet) [description](lottery/README.md) ## Donation on testnet: [donation.antioquia.testnet](https://explorer.testnet.near.org/accounts/donation.antioquia.testnet) [description](donation/README.md) --- ## How to compile a contract and call its methods #### prepare compile the smart contract ```bash env 'RUSTFLAGS=-C link-arg=-s' cargo build --target wasm32-unknown-unknown --release ``` install the NEAR CLI ```bash npm i near-cli ``` log in; your account will be created in `/home/{user123}/.near-credentials/{testnet|mainnet}/` ```bash near login ``` deploy a contract, with the **escrow** contract as an example: ```bash # (1) near deploy --wasmFile target/wasm32-unknown-unknown/release/antioquia_escrow.wasm --accountId antioquia.testnet # (2) or, from a different account near deploy --wasmFile target/wasm32-unknown-unknown/release/antioquia_escrow.wasm --accountId escrow.antioquia.testnet # (3) or, from a dev account which will be created in the current directory near dev-deploy --wasmFile target/wasm32-unknown-unknown/release/antioquia_escrow.wasm # (4) deploy and call the 'init' method (special method) at once near deploy --wasmFile out/example.wasm --accountId example-contract.testnet --initFunction new --initArgs '{"owner_id": "example-contract.testnet", "total_supply": "10000000"}' ``` alternatively, build and deployt it by script ```bash ./deploy.sh ``` ### use call a method ```bash near call <CONTRACT_ID> <METHOD1> '{"arg1": "val1", "arg2" : 666}' --accountId <ACCOUNT_ID> # for example # create a new escrow # notice '--amount <....>' parameter # which means that some $coins are being sent to the contract near call escrow.antioquia.testnet new '{"escrow_id": "1aa", "funder_id": "11", "beneficiary_id": "22", "agreed_amount": 555}' --amount 0.000000000000000000000010 --accountId antioquia.testnet # set fees (you must be the owner/admin) near call escrow.antioquia.testnet set_base_fee_percentage '{"new_fee": 3}' --accountId escrow.antioquia.testnet ``` call a view method ```bash near view escrow.antioquia.testnet get_base_fee_percentage --accountId antioquia.testnet ``` --- links: * https://docs.near.org/tools/near-cli * https://learn.figment.io/tutorials/write-and-deploy-a-smart-contract-on-near # Escrow smart contract --- ## methods call `init()` method to initialize escrow on the global level; use it only once ```rust fn init( owner_id: Option<AccountId> base_fee_percentage: Option<u128> ) /* wherein: * owner_id - an account of an owner/admin; if the value isn't not provided, the caller will become the one. * base_fee_percentage - the percentage of a fee that the owner/admin will receive off each deal */ ``` to create a new deal, call `new()`; and attach `agreed_amount` of coins to it ```rust #[payable] fn new( escrow_id: EscrowId, funder_id: AccountId, beneficiary_id: AccountId, agreed_amount: Balance, current_fee_percentage: Option<u128> ) /* wherein: * escrow_id - random string that'll be ID of escrow * funder_id - account address of a funder/client * beneficiary_id - account address of the other party * agreed_amount - how much to deposit in escrow * current_fee_percentage - fee percentage in this escrow; if not provided, the base_fee_percentage will get used instead */ ``` then either release escrow, if a deal has been finished successfully ```rust fn release_deposit( escrow_id: EscrowId ) /* wherein: * escrow_id - escrow ID */ ``` or reimburse the other party otherwise ```rust fn reimburse_funder( escrow_id: EscrowId ) /* wherein: * escrow_id - escrow ID */ ``` other methods ```rust fn get_base_fee_percentage() -> Balance fn get_owner_id() -> AccountId fn get_item(escrow_id: EscrowId) -> Option<EscrowItem> fn set_base_fee_percentage(new_fee: Balance) //withdraw all the coins of an escrow to the admin's/owner's account //use it only when there's an urgent need to do it fn emergency_withdraw(escrow_id: EscrowId) ``` # Lottery smart contract --- ## methods call `init()` method to initialize lottery on the global level; use it only once ```rust fn init( owner_account_id: Option<AccountId> base_fee_percent: Option<u128> ) /* wherein: * owner_id - an account of an owner/admin; if the value isn't not provided, the caller will become the one. * base_fee_percent - percent of a fee that the owner/admin will receive off each deal */ ``` to create a new lottery: ```rust #[payable] fn new( lottery_id: LotteryId, organiser_account_id: AccountId, agreed_prize_amount: Balance, current_fee_percent: Option<u128>, ) /* wherein: * lottery_id - random string that'll be ID of lottery * organiser_account_id - account address of a organiser * agreed_prize_amount - how much is the prize * current_fee_percentage - fee percentage in this escrow; if not provided, the base_fee_percentage will get used instead */ ``` to add a new participant, or opt out an existing one: ```rust fn add_participant( lottery_id: LotteryId, participant_account_id: AccountId ) fn opt_out_participant( lottery_id: LotteryId, participant_account_id: AccountId ) /* wherein: * lottery_id - random string that'll be ID of lottery * participant_account_id - account address of a participant */ ``` to pick a winner, randomly; or to get one: ```rust fn pick_random_winner( lottery_id: LotteryId ) fn get_winner( lottery_id: LotteryId ) ``` to send the prize to the winner: ```rust fn release_prize_to_winner( lottery_id: LotteryId ) ``` to get a lottery info: ```rust fn get_lottery( lottery_id: LotteryId ) ``` to get the current balance/prize of lottery; if the whole prize has been sent to the winner, the balance becomes 0; ```rust fn get_current_balance( lottery_id: LotteryId ) ``` # Donation smart contract --- ## methods call `init()` method to initialize escrow on the global level; use it only once ```rust fn init( owner_account_id: Option<AccountId> base_fee_percent: Option<u128> ) /* wherein: * owner_id - an account of an owner/admin; if the value isn't not provided, the caller will become the one. * base_fee_percent - percent of a fee that the owner/admin will receive off each deal */ ``` to send a donation: ```rust #[payable] send( donation_id: DonationId, receiver_account_id: AccountId, agreed_amount: Balance, ) /* wherein: * donation_id - random string that'll be ID of a donation * receiver_account_id - account address of the other party * amount - how much to send to the receiver * current_fee_percentage - fee percentage in this donation; if not provided, the base_fee_percentage will get used instead */ ``` to get information about a donation: ```rust fn get_donation( donation_id: DonationId ) ```

Learn-NEAR_NCD--messagebox

contract as-pect.config.js asconfig.json assembly __tests__ as-pect.d.ts main.spec.ts as_types.d.ts index.ts tsconfig.json utils.ts compile.js package-lock.json package.json documentation.md package-lock.json package.json readme.md src config.js testcase.md

near-x_scaffold-near

README.md |

# Ⓝ scaffold-near > Everything you need to get started building decentralized applications powered by NEAR --- | <B> [ 💻 Installation ](https://github.com/near-x/scaffold-near#-installation) </B> | <B> [ 🏃‍♀️ Getting Started ](https://github.com/near-x/scaffold-near#%EF%B8%8F-getting-started) </B> | | --- | --- | | <B> [ 🔭 Learning Rust ](https://github.com/near-x/scaffold-near#-learning-rust) </B> | | | | | --- | --- | --- | --- | | [ 🔏 Providers ](https://github.com/near-x/scaffold-near#-providers) | [ 🖇 Hooks ](https://github.com/near-x/scaffold-near#-hooks) | [ 📦 Components ](https://github.com/near-x/scaffold-near#-components) | <B> [ 📡 Deploy ](https://github.com/near-x/scaffold-near#-deploy) </B> | | [ 📺 UI Library ](https://github.com/near-x/scaffold-near#-ui-library) | [ ⛑ Helpers ](https://github.com/near-x/scaffold-near#-helpers) | [ 🎚 Extras ](https://github.com/near-x/scaffold-near#-extras) | <B> [ 🛳 Ship it! ](https://github.com/near-x/scaffold-near#-ship-it) </B> | | | | --- | | [ 🌐 Explorer ](https://github.com/near-x/scaffold-near#-explorer) | | <B> [ Built with 🏗 scaffold-near ](https://github.com/near-x/scaffold-near#-built-with--scaffold-near) </B> | <B> [ 👩‍💻 Examples & Tutorials ](https://github.com/near-x/scaffold-near#-examples-and-tutorials) </B> | <B> [ 🚩 Challenges ](https://github.com/near-x/scaffold-near#-challenges) </B>| | --- | --- | --- | | <B> [ 💬 Support Chat ](https://github.com/near-x/scaffold-near#-support-chat) </B>| | --- | --- --- ## 💬 Support Chat Join the telegram [support chat 💬]() to ask questions and find others building with Ⓝ scaffold-near! --- ===================================================== [⏫ back to the top ⏫](https://github.com/near-x/scaffold-near#-scaffold-near) ---

love-and-coffee-archive_near-challenge-11

.eslintrc.yml .travis.yml DETAILS.md README.md as-pect.config.js asconfig.json assembly as_types.d.ts main.ts tsconfig.json babel.config.js package.json src assets logo-black.svg logo-white.svg config.js global.css index.html index.js main.test.js utils.js wallet login index.html

# Tic Tac Toe ## Step by Step Guide on building a game on NEAR blockchain This step-by-step guide will go through making Tic Tac Toe game on NEAR blockchain with a web interface! You can try it out right now - https://martintale.github.io/near-challenge-11/ # Features - Playable Game - Storing, updating, and viewing game state from NEAR blockchain - Web <-> NEAR blockchain interactions # Setup 1. Follow NEAR Hackaton guide to setup development environment - https://docs.near.org/docs/develop/basics/hackathon-startup-guide 2. Clone or download this repository 3. Update `CONTRACT_NAME` in `src\config.js` with your NEAR account 4. Install dependencies with the command below ``` yarn install ``` # Run your local version Call method below ``` yarn dev ``` and open http://localhost:1234/ in your browser. You should see the whole game running on NEAR testnet with fronted being served from your local dev environment. # Smart Contract Essentially, this is a program (in our case - game server) that runs on blockchain. We will go through Tic Tac Toe contract step by step after which you should be able to make your own modifications and deploy your improved version of Tic Tac Toe or make a whole new game. # Lets Dig In! Open up `assembly\main.ts` file right at the beginning I set up few data structures required by our Voting System. ## Board class We will use this class to create a new board for every player and store it on the NEAR blockchain. ``` @nearBindgen class Board { cells: string[] = ['', '', '', '', '', '', '', '', '']; currentTurnMark: string = 'X'; winner: string = ''; ``` First-line `@nearBindgen` is special as it allows NEAR to serialize our Board objects to be serialized on the blockchain. After that, we define a few properties (`cells`, `currentTurnMark`, `winner`) our game will use to manage the Board state. In addition, we define several methods on our Board that will help manage its state. Let's go over them one by one. ### isFull Checks if the board has been filled. ``` isFull(): boolean { for (let i = 0; i < this.cells.length; i += 1) { if (this.cells[i] == '') { return false; } } return true; } ``` ### cellIsMarked Checks if a cell in the board has been marked by Player ``` cellIsMarked(x: number, y: number): boolean { const cellIndex = this.getCellIndex(x, y); if (this.cells[cellIndex] == '') { return false; } return true; } ``` ### getCellIndex As we're using a one-dimensional array to store our Board cell data we need to convert x/y coordinates into cell index that we can use to access the correct cell. ``` getCellIndex(x: number, y: number): i32 { return i32(x + y * 3); } ``` ### markCell When marking a cell we check who's turn it is to add the correct mark to the cell ``` markCell(x: number, y: number): void { const cellIndex = this.getCellIndex(x, y); this.cells[cellIndex] = this.currentTurnMark; if (this.currentTurnMark == 'X') { this.currentTurnMark = 'O'; } else { this.currentTurnMark = 'X'; } } ``` ### getWinner Checks the board to see if a win condition has been reached. If yes, then it returns the Player mark that won, otherwise, it returns a TIE. ## CallResponse class When creating backend systems you always want to have a robust and consistent way you can get data back to be manipulated or displayed on the frontend so we define this basic structure to be used in all our call functions. ``` @nearBindgen class CallResponse { constructor( public success: boolean, public message: string, ) { } } ``` `success` property indicates if the request was successful to know how and which response to display to the user in a user-friendly way. `message` in our case explain what went wrong with our request to end-user or communicate other information :) ## Data Storage For the system to work and not just forget what it knows after each command is executed we need to preserve that data somewhere. We store our boards for all Players in `PersistentUnorderedMap`. You can read more about and other storage options here - https://docs.near.org/docs/concepts/data-storage#persistentunorderedmap ``` const boards = new PersistentUnorderedMap<string, Board>("m"); ``` An important thing to keep in mind in case you want to store multiple persistent objects is to specify a different name (` m`, `n`, `b`) for each one of them. Otherwise, they all will point to the same data causing unexpected results. ## Helpers To keep the rest of the code cleaner it's often useful to create some helper functions that handle repeated tasks for you. These kinds of functions are very useful in a case where at some point you want to change how they work then you only have to do it in one place instead of digging through the whole code. ### Responses Another common function I tend to use is `response` which makes it easy to return your function call responses in a predictable and consistent way. ``` function response(messages: string[], success: boolean): CallResponse { return new CallResponse(success, messages) } ``` ### Creating and Retrieving Player Board Game-related functions that will help us create new or retrieve existing Player boards. This helper creates and stores a fresh Player board in persistent storage for a user with `accountId`. ``` function createPlayerBoard(accountId: string): Board { const newPlayerBoard = new Board(); boards.set(accountId, newPlayerBoard); return newPlayerBoard; } ``` The Player board might not exist so it may return `null` instead of the Player board. In this case, we want to create a new board for that player before proceeding. ``` function getPlayerBoard(accountId: string): Board | null { return boards.get(accountId); } ``` Often we just want to get a Board whether they have one or not yet. So we combine the two above functions into one where we return the existing board or create a new one for the user with `accountId`. ``` function getOrCreatePlayerBoard(accountId: string): Board { const existingPlayerBoard = getPlayerBoard(accountId); if (existingPlayerBoard) { return existingPlayerBoard; } return createPlayerBoard(accountId); } ``` ## External Functions These are functions that anyone with NEAR account can call to view data about our game state or manipulate it in some way. It can be done through CLI or in our case from a website using Javascript. ### markCell The main function lets the Player mark cell for the current turn mark. ``` export function markCell(x: string, y: string): CallResponse { const playerBoard = getOrCreatePlayerBoard(context.sender); ``` `context.sender` is available on all call requests that indicate which NEAR account is calling this function. ``` if (playerBoard.cellIsMarked(parseInt(x), parseInt(y))) { return response('Cell is already marked!', false); } ``` We first need to double-check that cell is empty because we don't want Players cheating their way to victory :) ``` const mark = playerBoard.currentTurnMark; playerBoard.markCell(parseInt(x), parseInt(y)); ``` Now, we can safely mark the cell in the Player chosen location. ``` if (playerBoard.isFull()) { const winner = playerBoard.getWinner(); playerBoard.winner = winner; boards.set(context.sender, playerBoard); if (winner == 'TIE') { return response('Game ended in a tie!', true); } else { return response(winner + ' won the game!', true); } ``` In a case where the board becomes full - we want to end the game. So we check who the winner is (or if it's a tie) - update board state and respond to the user that the game is over. ``` } else { const winner = playerBoard.getWinner(); if (winner != 'TIE') { playerBoard.winner = winner; boards.set(context.sender, playerBoard); return response(winner + ' won the game!', true); } } ``` Otherwise, we check if there is a winner even if the board is not full. If there is then we mark the board as finished and respond to the client who won the game. ``` boards.set(context.sender, playerBoard); return response('Cell ' + x.toString() + ',' + y.toString() + ' marked with ' + mark + '!', true); } ``` Finally, we update the game board with the new mark if it hasn't been done before because the game is not finished yet and respond to the client with the location and mark that was placed. ### viewBoard View functions are special because you don't need a NEAR account to access/call them but it's important to note that `context.sender` isn't available either so we need to pass in `accountId` for it to know which board to return. ``` export function viewBoard(accountId: string): Board | null { return getPlayerBoard(accountId); } ``` ### startNewGame And finally, the ability to start a new game - because we want our Players to play through multiple games on a single account. ``` export function startNewGame(): CallResponse { createPlayerBoard(context.sender); return response('New game started!', true); } ``` # Frontend We have gone through our Smart Contract so let's check out some important parts of our frontend. In `/src/index.html` you can see the structure of our website/game. It contains two blocks - one for logged-in users and one for logged-out ones. Logged-in users see basic information about the game and can sign in. Signed-in users can view the game board and UI, information about which NEAR account they used to log in as well messages received from blockchain, and the ability to sign out. In `/src/global.css` you will find all the styling for our website/game. Now, let's have a look at Javascript files that are important for our project and some snippets of core functionality. In `/src/config.js` you will need to update your NEAR account id as it will be used to deploy your Smart Contract to the NEAR blockchain. The rest of the script is just configuration and common URLs NEAR SDK uses. ## Utility Functions You can find some NEAR related utility functions in `/src/utils.js`. `initContract()` function initializes a connection with NEAR wallet and stores information about currently logged-in user and their wallet in global variables (e.g. `window.accountId`). In addition, it sets up necessary functionality for your contract as shown below. ``` // Initializing our contract APIs by contract name and configuration window.contract = await new Contract( window.walletConnection.account(), nearConfig.contractName, { // View methods are read-only. They don't modify the state but usually return some value. viewMethods: [ "viewBoard", ], // Change methods can modify the state. But you don't receive the returned value when called. changeMethods: [ "markCell", "startNewGame", ], sender: window.walletConnection.account(), // account object to initialize and sign transactions. } ); ``` You will have to define your external function from you Smart Contract in `viewMethods` and `changeMethods` arrays for them to be usable with NEAR SDK. Then there are two more common functions `logout` and `login` which are self-explanatory. ## Game Code We will now have a look at important parts of the game code in `/src/index.js`. ### Gas When making `call` (change) requests to the blockchain you need to provide gas aka small payment for action you're about to perform. In our case, start a new game or mark a cell. For simplicity, we just define the maximum amount of gas you can use per request. ``` const BOATLOAD_OF_GAS = "300000000000000"; ``` ### Loading Indicator When performing actions on servers or blockchain they don't complete instantly so for a better user experience we want to show a loading indicator. We simply replace the content of the cell or button with a loading SVG and prevent the user from clicking/tapping it twice until the request has been executed. ``` function startLoadingButton(button) { button.innerHTML = LOADING_SVG; button.style.pointerEvents = "none"; } function stopLoadingButton(button) { button.style.pointerEvents = "inherit"; } ``` ### Start New Game This button is only visible when the user's game is over. As you can see we're using one of the functions we defined in `/src/utils.js`. To start a new game we don't need to pass in any parameters so we provide an empty object `{}`. We make sure that we wait for the request to complete before proceeding by prefixing the function call with `await`. When the request has been executed we update the response for the user to see and update the board state. ``` startNewGameElement.onclick = async () => { try { startLoadingButton(startNewGameElement); const response = await window.contract.startNewGame( {}, BOATLOAD_OF_GAS ); updateResponse(response.message, response.success); updateBoard(); stopLoadingButton(startNewGameElement); } catch (e) { console.log(e); alert( "Something went wrong! " + "Maybe you need to sign out and back in? " + "Check your browser console for more info." ); throw e; } } ``` ### Update Board We call this function as soon as the user is logged in. If he doesn't have a board yet then `viewBoard` call will return `null` meaning that we need to start a new game before proceeding. ``` async function updateBoard() { const board = await window.contract.viewBoard({ accountId: window.accountId, }); if (board == null) { try { const response = await window.contract.startNewGame( {}, BOATLOAD_OF_GAS ); updateResponse(response.message, response.success); updateBoard(); } catch (e) { console.log(e); alert( "Something went wrong! " + "Maybe you need to sign out and back in? " + "Check your browser console for more info." ); throw e; } ``` Otherwise, we update the board with its current state received from blockchain and add the ability to mark empty cells. Have a look at `src/index.js` yourself to see how the game state is visualized. # That's It, Folks! That covers all the main functionality in our game! Now that we have gone through the code - we want to build and deploy our game to NEAR. Deploy ====== Every smart contract in NEAR has its [own associated account][NEAR accounts]. When you run `yarn dev`, your smart contracts get deployed to the live NEAR TestNet with a throwaway account. When you're ready to make it permanent, here's how. Step 0: Install near-cli -------------------------- You need near-cli installed globally. Here's how: npm install --global near-cli This will give you the `near` [CLI] tool. Ensure that it's installed with: near --version Step 1: Create an account for the contract ------------------------------------------ Visit [NEAR Wallet] and make a new account. You'll be deploying these smart contracts to this new account. Now authorize NEAR CLI for this new account, and follow the instructions it gives you: near login Step 2: set contract name in code --------------------------------- Modify the line in `src/config.js` that sets the account name of the contract. Set it to the account id you used above. const CONTRACT_NAME = process.env.CONTRACT_NAME || 'your-account-here!' Step 3: change remote URL if you cloned this repo ------------------------- Unless you forked this repository you will need to change the remote URL to a repo that you have commit access to. This will allow auto deployment to Github Pages from the command line. 1) go to GitHub and create a new repository for this project 2) open your terminal and in the root of this project enter the following: $ `git remote set-url origin https://github.com/YOUR_USERNAME/YOUR_REPOSITORY.git` Step 4: deploy! --------------- One command: yarn deploy As you can see in `package.json`, this does two things: 1. builds & deploys smart contracts to NEAR TestNet 2. builds & deploys frontend code to GitHub using [gh-pages]. This will only work if the project already has a repository set up on GitHub. Feel free to modify the `deploy` script in `package.json` to deploy elsewhere. [NEAR]: https://nearprotocol.com/ [yarn]: https://yarnpkg.com/ [AssemblyScript]: https://docs.assemblyscript.org/ [React]: https://reactjs.org [smart contract docs]: https://docs.nearprotocol.com/docs/roles/developer/contracts/assemblyscript [asp]: https://www.npmjs.com/package/@as-pect/cli [jest]: https://jestjs.io/ [NEAR accounts]: https://docs.nearprotocol.com/docs/concepts/account [NEAR Wallet]: https://wallet.nearprotocol.com [near-cli]: https://github.com/nearprotocol/near-cli [CLI]: https://www.w3schools.com/whatis/whatis_cli.asp [create-near-app]: https://github.com/nearprotocol/create-near-app [gh-pages]: https://github.com/tschaub/gh-pages

lucalysoft_Nearpro

.github scripts readme.sh workflows readme.yml tests.yml .gitpod.yml README-Windows.md README.md ft Cargo.toml src lib.rs integration-tests rs Cargo.toml src tests.rs ts package.json src main.ava.ts rustfmt.toml scripts build.bat build.sh test-contract-defi Cargo.toml src lib.rs

Fungible Token (FT) =================== Example implementation of a [Fungible Token] contract which uses [near-contract-standards] and [simulation] tests. This is a contract-only example. [Fungible Token]: https://nomicon.io/Standards/FungibleToken/Core [near-contract-standards]: https://github.com/near/near-sdk-rs/tree/master/near-contract-standards [simulation]: https://github.com/near/near-sdk-rs/tree/master/near-sdk-sim Prerequisites ============= If you're using Gitpod, you can skip this step. 1. Make sure Rust is installed per the prerequisites in [`near-sdk-rs`](https://github.com/near/near-sdk-rs#pre-requisites) 2. Ensure `near-cli` is installed by running `near --version`. If not installed, install with: `npm install -g near-cli` ## Building To build run: ```bash ./scripts/build.sh ``` Using this contract =================== ### Quickest deploy You can build and deploy this smart contract to a development account. [Dev Accounts](https://docs.near.org/concepts/basics/account#dev-accounts) are auto-generated accounts to assist in developing and testing smart contracts. Please see the [Standard deploy](#standard-deploy) section for creating a more personalized account to deploy to. ```bash near dev-deploy --wasmFile res/fungible_token.wasm --helperUrl https://near-contract-helper.onrender.com ``` Behind the scenes, this is creating an account and deploying a contract to it. On the console, notice a message like: >Done deploying to dev-1234567890123 In this instance, the account is `dev-1234567890123`. A file has been created containing a key pair to the account, located at `neardev/dev-account`. To make the next few steps easier, we're going to set an environment variable containing this development account id and use that when copy/pasting commands. Run this command to the environment variable: ```bash source neardev/dev-account.env ``` You can tell if the environment variable is set correctly if your command line prints the account name after this command: ```bash echo $CONTRACT_NAME ``` The next command will initialize the contract using the `new` method: ```bash near call $CONTRACT_NAME new '{"owner_id": "'$CONTRACT_NAME'", "total_supply": "1000000000000000", "metadata": { "spec": "ft-1.0.0", "name": "Example Token Name", "symbol": "EXLT", "decimals": 8 }}' --accountId $CONTRACT_NAME ``` To get the fungible token metadata: ```bash near view $CONTRACT_NAME ft_metadata ``` ### Standard deploy This smart contract will get deployed to your NEAR account. For this example, please create a new NEAR account. Because NEAR allows the ability to upgrade contracts on the same account, initialization functions must be cleared. If you'd like to run this example on a NEAR account that has had prior contracts deployed, please use the `near-cli` command `near delete`, and then recreate it in Wallet. To create (or recreate) an account, please follow the directions on [NEAR Wallet](https://wallet.near.org/). Switch to `mainnet`. You can skip this step to use `testnet` as a default network. export NEAR_ENV=mainnet In the project root, log in to your newly created account with `near-cli` by following the instructions after this command: near login To make this tutorial easier to copy/paste, we're going to set an environment variable for your account id. In the below command, replace `MY_ACCOUNT_NAME` with the account name you just logged in with, including the `.near`: ID=MY_ACCOUNT_NAME You can tell if the environment variable is set correctly if your command line prints the account name after this command: echo $ID Now we can deploy the compiled contract in this example to your account: near deploy --wasmFile res/fungible_token.wasm --accountId $ID FT contract should be initialized before usage. You can read more about metadata at ['nomicon.io'](https://nomicon.io/Standards/FungibleToken/Metadata.html#reference-level-explanation). Modify the parameters and create a token: near call $ID new '{"owner_id": "'$ID'", "total_supply": "1000000000000000", "metadata": { "spec": "ft-1.0.0", "name": "Example Token Name", "symbol": "EXLT", "decimals": 8 }}' --accountId $ID Get metadata: near view $ID ft_metadata Transfer Example --------------- Let's set up an account to transfer some tokens to. These account will be a sub-account of the NEAR account you logged in with. near create-account bob.$ID --masterAccount $ID --initialBalance 1 Add storage deposit for Bob's account: near call $ID storage_deposit '' --accountId bob.$ID --amount 0.00125 Check balance of Bob's account, it should be `0` for now: near view $ID ft_balance_of '{"account_id": "'bob.$ID'"}' Transfer tokens to Bob from the contract that minted these fungible tokens, exactly 1 yoctoNEAR of deposit should be attached: near call $ID ft_transfer '{"receiver_id": "'bob.$ID'", "amount": "19"}' --accountId $ID --amount 0.000000000000000000000001 Check the balance of Bob again with the command from before and it will now return `19`. ## Testing As with many Rust libraries and contracts, there are tests in the main fungible token implementation at `ft/src/lib.rs`. Additionally, this project has [simulation] tests in `tests/sim`. Simulation tests allow testing cross-contract calls, which is crucial to ensuring that the `ft_transfer_call` function works properly. These simulation tests are the reason this project has the file structure it does. Note that the root project has a `Cargo.toml` which sets it up as a workspace. `ft` and `test-contract-defi` are both small & focused contract projects, the latter only existing for simulation tests. The root project imports `near-sdk-sim` and tests interaction between these contracts. You can run unit tests with the following command: ```bash cd ft && cargo test -- --nocapture --color=always ``` You can run integration tests with the following commands: *Rust* ```bash cd integration-tests/rs && cargo run --example integration-tests ``` *TypeScript* ```bash cd integration-tests/ts && yarn && yarn test ``` ## Notes - The maximum balance value is limited by U128 (`2**128 - 1`). - JSON calls should pass U128 as a base-10 string. E.g. "100". - This does not include escrow functionality, as `ft_transfer_call` provides a superior approach. An escrow system can, of course, be added as a separate contract or additional functionality within this contract. ## No AssemblyScript? [near-contract-standards] is currently Rust-only. We strongly suggest using this library to create your own Fungible Token contract to ensure it works as expected. Someday NEAR core or community contributors may provide a similar library for AssemblyScript, at which point this example will be updated to include both a Rust and AssemblyScript version. ## Contributing When making changes to the files in `ft` or `test-contract-defi`, remember to use `./build.sh` to compile all contracts and copy the output to the `res` folder. If you forget this, **the simulation tests will not use the latest versions**. Note that if the `rust-toolchain` file in this repository changes, please make sure to update the `.gitpod.Dockerfile` to explicitly specify using that as default as well.

Mentor-Global-Consultants_near-microbonds-contracts

near-microbonds-bond-factory README.md factory-contract Cargo.toml build.sh src events.rs factory_core.rs internal.rs lib.rs tests.rs tokens.rs types.rs views.rs integration-tests-ts package-lock.json package.json src main.ava.ts nft-contract Cargo.toml build.sh src approval.rs enumeration.rs events.rs internal.rs lib.rs metadata.rs mint.rs nft_core.rs royalty.rs tests.rs package.json near-microbonds-custody-contract README.md contract Cargo.toml build.sh deploy.sh src events.rs external.rs internal.rs lib.rs tests.rs tokens.rs types.rs user_account.rs views.rs integration-tests ts package.json src helper_functions.ts main.ava.ts package.json near-microbonds-user-registry README.md contract Cargo.toml build.sh deploy.sh src events.rs internal.rs lib.rs registry_core.rs tests.rs views.rs integration-tests ts package.json src main.ava.ts package.json

# Microbonds Factory The goal behind the Microbonds project is to allow projects to be created under governing municipalities, and have funds raised for their projects just like traditional bonds, but unlike the traditional way, have the bonds represented as a Non-Fungible Token. As there are many different parts to making this work under different legislations, the project has a few moving parts. We will cover them in detail in their individual code bases. ## Introduction This contract is responsible for keeping track of municipalities, their projects and the projects' tokens. The contract is also responsible for deploying these projects' tokens from a set of stored versions. _Note: The token versions are not updatable, but you can store new versions._ ## Table of Contents 1. [Municipalities](#municipalities) 2. [Projects](#projects) 3. [Tokens](#tokens) 4. [Token Versions](#token-versions) ## Municipalities Let us go through the contract and what a typical use-case would look like for each functionality. You can see the overall flow of our use-case in the table of contents. In our use-case, we want to have municipalities sign up to the platform and once they are approved, we want to be able to access which municipalities are approved on-chain. In order to do that we are able to create a municipality on-chain using the following function: ```rs pub fn add_new_municipality( &mut self, municipality_id: String, memo: Option<String>, ) ``` Using this function, we can provide any unique identifier for the municipality we want to store, as well as an optional memo that will be broadcasted with the following event: ```rs pub struct AddMunicipalityLog { pub municipality_id: String, #[serde(skip_serializing_if = "Option::is_none")] pub memo: Option<String>, } ``` ## Projects In our use-case, once a municipality is approved and they have been created on the contract, they will be able to create projects that will fall under their governance. Similar to above, we can use the following function: ```rs pub fn add_new_project( &mut self, municipality_id: String, project_id: String, memo: Option<String>, ) ``` Using this function, we can provide any unique identifier for the project we want to store, as well as the governing municipality's id and an optional memo that will be broadcasted with the following event: ```rs pub struct AddProjectLog { pub municipality_id: String, pub project_id: String, #[serde(skip_serializing_if = "Option::is_none")] pub memo: Option<String>, } ``` Once projects have been added under a municipality, we can query the projects for any municipality by calling the following view function: ```rs pub fn view_projects_for_municipality( &self, municipality_id: String, from_index: Option<U128>, limit: Option<u64>, ) -> Vec<String> ``` By providing the municipality id, we can retrieve all the projects that are governed by the municipality. Since view calls are subject to a byte-limit, there is optional pagination included that can be used to retrieve the entire list of projects if they exceed the call limit. ## Tokens Since the goal behind the creation of the contract is to issue bonds for each project, once the project has been created they can finally issue bonds in the form of a Non-Fungible Token. We can do this by calling the following function: ```rs #[payable] pub fn add_new_token_for_project( &mut self, municipality_id: String, project_id: String, token_version: String, memo: Option<String>, ) -> Promise ``` By providing a municipality and project id, we can create a new token for the given project, governed under the given municipality. **_Both the municipality and project have to be valid for the creation to occur._** As for the token version; the individual projects can decide which token version suits them best by providing the matching token version identifier as it is stored on the contract. All token versions will be unique, for instance royalty fees can be included on token 1, whereas with token 2 we can have some special event happen on mint. The token versions are completely customizable and it is up to the deployer to add more versions. More info on this [below](#token-versions). **IMPORTANT**: A deposit must be attached, equal to the cost of storage for the token version that will be deployed with the call. This can also be explored [below](#token-versions). Again, an optional memo can be attached which will be broadcasted with the following event: ```rs pub struct AddProjectTokenLog { pub municipality_id: String, pub project_id: String, pub token_id: String, #[serde(skip_serializing_if = "Option::is_none")] pub memo: Option<String>, } ``` We can view all the tokens minted under a specific project by calling the following view function: ```rs pub fn view_tokens_for_project( &self, project_id: String, from_index: Option<U128>, limit: Option<u64>, ) -> Vec<String> ``` Pagination is once again added, should the list exceed the byte-limit on view calls. ## Token Versions We have decided to create a way for projects to choose from different token versions as some projects' needs are different from others. To add token versions, the following function can be called: ```rs pub fn add_token_version(&mut self) ``` At first glance it seems like no input is passed to the function but with the near-sdk, arguments can also be passed as bytes using base64 encoding. This can be read using `env::input()`. This means we can technically pass information to the contract by passing some bytes through args. Something like this: ```ts const code = fs.readFileSync('./test-contracts/nft.wasm', 'utf8'); const code_b64 = Buffer.from(code, 'base64'); await owner.call( factory_contract, // The contract that we are calling 'add_token_version', // The method we are calling code_b64 // The args we are supplying - in this case the code encoded in base64. ); ``` For us to read it on contract-level we simply read the input like this: ```rs let code = env::input().expect("No input given").to_vec(); ``` With this implementation we can create new token versions as it becomes neccessary. The token versions have an auto-incrementing version number starting from zero (0). Meaning if you have one token stored, its id will be '0' and the next uploaded token version will be '1'. We suggest storing the relevant metadata and descriptions for each token on the token itself. To retrieve all the stored token versions, we can call the following view function: ```rs pub fn get_token_versions(&self) -> Vec<String> ``` We can also retrieve the code for any stored version by providing the token_version id: ```rs pub fn get_code_for_token_version(&self, token_version: &String) -> Vec<u8> ``` When creating tokens for a project, we'd like to know what the attached deposit must be for any given token version, so to get that before deployment the following function can be called: ```rs pub fn get_deployment_cost(&self, token_version: String) -> U128 ``` ## How to build and run tests You can use either yarn or npm for the following commands: ### Install packages ``` npm install ``` ### Build contracts ``` npm build ``` ### Run all tests ``` npm test ``` ### Run unit tests only ``` npm run test:unit ``` ### Run integration tests only in both TypeScript and Rust ``` npm run test:integration ``` ### Run integration tests only in either TypeScript OR Rust ``` npm run test:integration:ts OR npm run test:integration:rs ``` Please check the package.json for all possible scripts. # Microbonds User Registry The goal behind the Microbonds project is to allow projects to be created under governing municipalities, and have funds raised for their projects just like traditional bonds, but unlike the traditional way, have the bonds represented as a Non-Fungible Token. As there are many different parts to making this work under different legislations, the project has a few moving parts. We will cover them in detail in their individual code bases. ## Introduction This contract is responsible for keeping track of users that have registered under a municipality. ## Table of Contents 1. [Adding Users](#adding-users) ## Adding Users Let's go through the contract and what a typical use-case would look like for each functionality. In our use-case, we want to have a user sign up to the platform and then register to a municipality. Some municipalities have different requirements for registration, so we will have to check that the user meets the requirements before registering them. If they are approved, we will add them with the following function: ```rs pub fn add_user_to_municipality( &mut self, municipality_id: String, user_id: String ) ``` Using this function, we can provide any unique identifier for the municipality and the user that will be broadcasted with the following event: ```rs pub struct AddUserLog { pub user_id: String, pub municipality_id: String, pub memo: Option<String>, } ``` ## Checking User Registration We can now see if a user is registered to a municipality by using the following function: ```rs pub fn is_user_in_municipality( &self, municipality_id: String, user_id: String ) -> bool ``` We can also get all the users who are registered under a municipality by using the following function: ```rs pub fn get_users_for_municipality( &self, municipality_id: String, from_index: Option<U128>, limit: Option<u64>, ) -> Vec<String> ``` # How to build and run tests You can use either yarn or npm for the following commands: ### Install dependencies ```bash npm install ``` ### Build contracts ```bash npm run build ``` ### Run all tests ```bash npm run test ``` ### Run unit tests only ``` npm run test:unit ``` ### Run integration tests only in both TypeScript and Rust ``` npm run test:integration ``` ### Run integration tests only in either TypeScript OR Rust ``` npm run test:integration:ts OR npm run test:integration:rs ``` Please check the package.json for all possible scripts. # Microbonds Custody Contract The goal behind the Microbonds project is to allow projects to be created under governing municipalities, and have funds raised for their projects just like traditional bonds, but unlike the traditional way, have the bonds represented as a Non-Fungible Token. As there are many different parts to making this work under different legislations, the project has a few moving parts. We will cover them in detail in their individual code bases. ## Introduction This contract is responsible for storing all tokens held by users who have not bound their own wallets. So in essence tokens will be minted here and a registry will be kept of these tokens. Users can then bind a near account to their account on the user registry contract and withdraw their tokens to the bound account. ## Table of Contents 1. [Tokens](#tokens) 2. [User Accounts](#user-accounts) ## Tokens Let's go through the contract and what a typical use-case would look like for each functionality. You can see the overall contract structure in the table of contents. In our use-case, we want to allow tokens to be stored for users who have not linked their own wallets. This is done using the following function: ```rs pub fn add_new_token_for_owner( &mut self, owner_id: String, token_account_id: AccountId, token_id: String, memo: Option<String> ) ``` Using this function, we have stored a new token for the user and it will emit the following event: ```rs pub struct AddTokenLog { pub owner_id: String, pub token_account_id: String, pub token_id: String, #[serde(skip_serializing_if = "Option::is_none")] pub memo: Option<String>, } ``` We can also view the tokens that any user has in the custody contract with the following function: ```rs pub fn tokens_for_owner( &self, owner_id: String, from_index: Option<U128>, limit: Option<u64>, ) -> Vec<String> ``` If a user has linked a wallet to the contract, we can send the token to the user's wallet using the following function: ```rs pub fn send_token_to_owner( &self, owner_id: String, token_account_id: AccountId, token_id: String, transfer_memo: Option<String>, resolve_memo: Option<String>, ) -> Promise ``` This function will emit the following event: ```rs pub struct SendTokenLog { pub owner_id: String, pub token_account_id: String, pub token_id: String, #[serde(skip_serializing_if = "Option::is_none")] pub memo: Option<String>, } ``` ## User Accounts In our use-case, we want to allow users to bind their own wallets to their account on the user registry contract. This is done using the following function: ```rs pub fn link_account_to_user( &mut self, user_id: String, account_id: AccountId ) ``` Depending on whether the user has already linked a wallet or not, this function will emit one of the following events: ```rs pub struct LinkAccountLog { pub user_id: String, pub account_id: String, pub memo: Option<String>, } // OR pub struct ChangeAccountLog { pub user_id: String, pub old_account_id: String, pub new_account_id: String, pub memo: Option<String>, } ``` We can also view the connected account for a user at any point in time using the following function: ```rs pub fn get_account_for_user( &self, user_id: String ) -> Option<AccountId> ``` ## How to build and run tests You can use either yarn or npm for the following commands: ### Install packages ``` npm install ``` ### Build contracts ``` npm build ``` ### Run all tests ``` npm test ``` ### Run unit tests only ``` npm run test:unit ``` ### Run integration tests only in both TypeScript and Rust ``` npm run test:integration ``` ### Run integration tests only in either TypeScript OR Rust ``` npm run test:integration:ts OR npm run test:integration:rs ``` Please check the package.json for all possible scripts.

mattlockyer_nft-series

.eslintrc.js README.md contract Cargo.toml build.sh src lib.rs utils.rs market Cargo.toml README.md build.sh clippy.toml src external.rs ft_callbacks.rs internal.rs lib.rs nft_callbacks.rs sale.rs sale_views.rs neardev dev-account.env package.json test api.test.js config.js near-utils.js test-utils.js utils patch-config.js

# NFT Series Implementation # WARNING This is using some non-standard stuff ## Rough notes on token series (type) and editions ``` // Mappings pseudo code TokenTypeString -> TokenTypeInt TokenTypeInt -> TokenTypeStruct (data) TokenId.split(":")[0] -> TokenTypeInt TokenId.split(":")[1] -> TokenEditionInt (unique token in type) In Rust: // getting owner of token let owner_id = self.tokens.owner_by_id.get(&token_id) // getting metadata for token (TokenTypeStruct) let mut token_id_iter = token_id.split(TOKEN_DELIMETER); let token_type_id = token_id_iter.next().unwrap().parse().unwrap(); let metadata = self.token_type_by_id.get(&token_type_id).unwrap().metadata; ``` ## Instructions `yarn && yarn test:deploy` #### Pre-reqs Rust, cargo, near-cli, etc... Everything should work if you have NEAR development env for Rust contracts set up. [Tests](test/api.test.js) [Contract](contract/src/lib.rs) # TBD

MyLikita-Health_mylikita-smart-contract

asconfig.json assembly .env as_types.d.ts index.ts model.ts tsconfig.json node_modules .bin sha.js .package-lock.json @as-covers assembly CONTRIBUTING.md README.md index.ts package.json tsconfig.json core CONTRIBUTING.md README.md package.json glue README.md lib index.d.ts index.js package.json transform README.md lib index.d.ts index.js util.d.ts util.js node_modules visitor-as .github workflows test.yml README.md as index.d.ts index.js asconfig.json dist astBuilder.d.ts astBuilder.js base.d.ts base.js baseTransform.d.ts baseTransform.js decorator.d.ts decorator.js examples capitalize.d.ts capitalize.js exportAs.d.ts exportAs.js functionCallTransform.d.ts functionCallTransform.js includeBytesTransform.d.ts includeBytesTransform.js list.d.ts list.js toString.d.ts toString.js index.d.ts index.js path.d.ts path.js simpleParser.d.ts simpleParser.js transformRange.d.ts transformRange.js transformer.d.ts transformer.js utils.d.ts utils.js visitor.d.ts visitor.js package.json tsconfig.json package.json @as-pect assembly README.md assembly index.ts internal Actual.ts Expectation.ts Expected.ts Reflect.ts ReflectedValueType.ts Test.ts assert.ts call.ts comparison toIncludeComparison.ts toIncludeEqualComparison.ts log.ts noOp.ts package.json types as-pect.d.ts as-pect.portable.d.ts env.d.ts cli README.md init as-pect.config.js env.d.ts example.spec.ts init-types.d.ts portable-types.d.ts lib as-pect.cli.amd.d.ts as-pect.cli.amd.js help.d.ts help.js index.d.ts index.js init.d.ts init.js portable.d.ts portable.js run.d.ts run.js test.d.ts test.js types.d.ts types.js util CommandLineArg.d.ts CommandLineArg.js IConfiguration.d.ts IConfiguration.js asciiArt.d.ts asciiArt.js collectReporter.d.ts collectReporter.js getTestEntryFiles.d.ts getTestEntryFiles.js removeFile.d.ts removeFile.js strings.d.ts strings.js writeFile.d.ts writeFile.js worklets ICommand.d.ts ICommand.js compiler.d.ts compiler.js package.json core README.md lib as-pect.core.amd.d.ts as-pect.core.amd.js index.d.ts index.js reporter CombinationReporter.d.ts CombinationReporter.js EmptyReporter.d.ts EmptyReporter.js IReporter.d.ts IReporter.js SummaryReporter.d.ts SummaryReporter.js VerboseReporter.d.ts VerboseReporter.js test IWarning.d.ts IWarning.js TestContext.d.ts TestContext.js TestNode.d.ts TestNode.js transform assemblyscript.d.ts assemblyscript.js createAddReflectedValueKeyValuePairsMember.d.ts createAddReflectedValueKeyValuePairsMember.js createGenericTypeParameter.d.ts createGenericTypeParameter.js createStrictEqualsMember.d.ts createStrictEqualsMember.js emptyTransformer.d.ts emptyTransformer.js hash.d.ts hash.js index.d.ts index.js util IAspectExports.d.ts IAspectExports.js IWriteable.d.ts IWriteable.js ReflectedValue.d.ts ReflectedValue.js TestNodeType.d.ts TestNodeType.js rTrace.d.ts rTrace.js stringifyReflectedValue.d.ts stringifyReflectedValue.js timeDifference.d.ts timeDifference.js wasmTools.d.ts wasmTools.js package.json csv-reporter index.ts lib as-pect.csv-reporter.amd.d.ts 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applicator additionalItems.ts additionalProperties.ts allOf.ts anyOf.ts contains.ts dependencies.ts dependentSchemas.ts if.ts index.ts items.ts items2020.ts not.ts oneOf.ts patternProperties.ts prefixItems.ts properties.ts propertyNames.ts thenElse.ts code.ts core id.ts index.ts ref.ts discriminator index.ts types.ts draft2020.ts draft7.ts dynamic dynamicAnchor.ts dynamicRef.ts index.ts recursiveAnchor.ts recursiveRef.ts errors.ts format format.ts index.ts jtd discriminator.ts elements.ts enum.ts error.ts index.ts metadata.ts nullable.ts optionalProperties.ts properties.ts ref.ts type.ts union.ts values.ts metadata.ts next.ts unevaluated index.ts unevaluatedItems.ts unevaluatedProperties.ts validation const.ts dependentRequired.ts enum.ts index.ts limitContains.ts limitItems.ts limitLength.ts limitNumber.ts limitProperties.ts multipleOf.ts pattern.ts required.ts uniqueItems.ts package.json json-schema-traverse .eslintrc.yml .github FUNDING.yml workflows build.yml publish.yml README.md index.d.ts index.js package.json spec .eslintrc.yml fixtures schema.js index.spec.js package.json tar-fs .travis.yml README.md index.js package.json test fixtures a hello.txt b a test.txt index.js tar-stream README.md extract.js headers.js index.js pack.js package.json sandbox.js tar README.md index.js lib create.js extract.js get-write-flag.js header.js high-level-opt.js large-numbers.js list.js mkdir.js mode-fix.js normalize-windows-path.js pack.js parse.js path-reservations.js pax.js read-entry.js replace.js strip-absolute-path.js strip-trailing-slashes.js types.js unpack.js update.js warn-mixin.js winchars.js write-entry.js package.json tcp-port-used README.md index.js node_modules debug README.md package.json src browser.js common.js index.js node.js package.json test.js text-encoding-utf-8 LICENSE.md README.md lib encoding.js encoding.lib.js package.json src encoding.js polyfill.js text-table .travis.yml example align.js center.js dotalign.js doubledot.js table.js index.js package.json test align.js ansi-colors.js center.js dotalign.js doubledot.js table.js to-readable-stream index.js package.json readme.md to-regex-range README.md index.js package.json toidentifier HISTORY.md README.md index.js package.json tr46 index.js lib mappingTable.json package.json ts-mixer CHANGELOG.md README.md dist cjs decorator.js index.js mixin-tracking.js mixins.js proxy.js settings.js types.js util.js esm index.js index.min.js types decorator.d.ts index.d.ts mixin-tracking.d.ts mixins.d.ts proxy.d.ts settings.d.ts types.d.ts util.d.ts package.json tslib CopyrightNotice.txt LICENSE.txt README.md modules index.js package.json package.json test validateModuleExportsMatchCommonJS index.js package.json tslib.d.ts tslib.es6.html tslib.es6.js tslib.html tslib.js tunnel-agent README.md index.js package.json tweetnacl AUTHORS.md CHANGELOG.md PULL_REQUEST_TEMPLATE.md README.md nacl-fast.js nacl-fast.min.js nacl.d.ts nacl.js nacl.min.js package.json type-check README.md lib check.js index.js parse-type.js package.json type-detect README.md index.js package.json type-detect.js type-fest base.d.ts index.d.ts package.json readme.md source async-return-type.d.ts asyncify.d.ts basic.d.ts conditional-except.d.ts conditional-keys.d.ts conditional-pick.d.ts entries.d.ts entry.d.ts except.d.ts fixed-length-array.d.ts iterable-element.d.ts literal-union.d.ts merge-exclusive.d.ts merge.d.ts mutable.d.ts opaque.d.ts package-json.d.ts partial-deep.d.ts promisable.d.ts promise-value.d.ts readonly-deep.d.ts require-at-least-one.d.ts require-exactly-one.d.ts set-optional.d.ts set-required.d.ts set-return-type.d.ts stringified.d.ts tsconfig-json.d.ts union-to-intersection.d.ts utilities.d.ts value-of.d.ts ts41 camel-case.d.ts delimiter-case.d.ts index.d.ts kebab-case.d.ts pascal-case.d.ts snake-case.d.ts typedarray-to-buffer .airtap.yml .travis.yml README.md index.js package.json test basic.js u2f-api .travis.yml README.md index.d.ts index.js lib google-u2f-api.js u2f-api.js package.json scripts test.sh test.in setup.js tsconfig.json u2f-api index.ts u3 README.md index.js lib cache.js eachCombination.js index.js package.json unique-string index.d.ts index.js package.json readme.md universal-url README.md browser.js index.js node_modules tr46 LICENSE.md README.md index.js lib mappingTable.json regexes.js package.json webidl-conversions LICENSE.md README.md lib index.js package.json whatwg-url LICENSE.txt README.md lib URL-impl.js URL.js URLSearchParams-impl.js URLSearchParams.js infra.js public-api.js url-state-machine.js urlencoded.js utils.js package.json package.json update-notifier check.js index.js package.json readme.md uri-js README.md dist es5 uri.all.d.ts uri.all.js uri.all.min.d.ts uri.all.min.js esnext index.d.ts index.js regexps-iri.d.ts regexps-iri.js regexps-uri.d.ts regexps-uri.js schemes http.d.ts http.js https.d.ts https.js mailto.d.ts mailto.js urn-uuid.d.ts urn-uuid.js urn.d.ts urn.js ws.d.ts ws.js wss.d.ts wss.js uri.d.ts uri.js util.d.ts util.js package.json url-parse-lax index.js package.json readme.md usb CHANGELOG.md README.md libusb .private README.txt bd.cmd bm.sh bwince.cmd post-rewrite.sh pre-commit.sh wbs.txt wbs_wince.txt .travis.yml INSTALL_WIN.txt README.md Xcode config.h android config.h appveyor.yml appveyor_cygwin.bat appveyor_minGW.bat autogen.sh bootstrap.sh examples dpfp.c dpfp_threaded.c ezusb.c ezusb.h fxload.c getopt getopt.c getopt.h getopt1.c hotplugtest.c listdevs.c sam3u_benchmark.c testlibusb.c xusb.c libusb core.c descriptor.c hotplug.c hotplug.h io.c libusb.h libusbi.h os darwin_usb.c darwin_usb.h haiku_pollfs.cpp haiku_usb.h haiku_usb_backend.cpp haiku_usb_raw.cpp haiku_usb_raw.h linux_netlink.c linux_udev.c linux_usbfs.c linux_usbfs.h netbsd_usb.c openbsd_usb.c poll_posix.c poll_posix.h poll_windows.c poll_windows.h sunos_usb.c sunos_usb.h threads_posix.c threads_posix.h threads_windows.c threads_windows.h wince_usb.c wince_usb.h windows_common.h windows_nt_common.c windows_nt_common.h windows_nt_shared_types.h windows_usbdk.c windows_usbdk.h windows_winusb.c windows_winusb.h strerror.c sync.c version.h version_nano.h msvc appveyor.bat config.h ddk_build.cmd errno.h inttypes.h libusb_2005.sln libusb_2010.sln libusb_2012.sln libusb_2013.sln libusb_2015.sln libusb_2017.sln libusb_wince.sln missing.c missing.h stdint.h tests libusb_testlib.h stress.c testlib.c travis-autogen.sh libusb_config config.h node_modules node-addon-api LICENSE.md README.md index.js napi-inl.deprecated.h napi-inl.h napi.h nothing.c package-support.json package.json tools README.md check-napi.js clang-format.js conversion.js eslint-format.js package.json src helpers.h node_usb.h uv_async_queue.h test usb.coffee usb.js util-deprecate History.md README.md browser.js node.js package.json uuid CHANGELOG.md CONTRIBUTING.md LICENSE.md README.md dist esm-browser index.js md5.js nil.js parse.js regex.js rng.js sha1.js stringify.js v1.js v3.js v35.js v4.js v5.js validate.js version.js esm-node index.js md5.js nil.js parse.js regex.js rng.js sha1.js stringify.js v1.js v3.js v35.js v4.js v5.js validate.js version.js index.js md5-browser.js md5.js nil.js parse.js regex.js rng-browser.js rng.js sha1-browser.js sha1.js stringify.js umd uuid.min.js uuidNIL.min.js uuidParse.min.js uuidStringify.min.js uuidValidate.min.js uuidVersion.min.js uuidv1.min.js uuidv3.min.js uuidv4.min.js uuidv5.min.js uuid-bin.js v1.js v3.js v35.js v4.js v5.js validate.js version.js package.json v8-compile-cache CHANGELOG.md README.md package.json v8-compile-cache.js v8flags README.md config-path.js index.js package.json visitor-as .github workflows test.yml README.md as index.d.ts index.js asconfig.json dist astBuilder.d.ts astBuilder.js base.d.ts base.js baseTransform.d.ts baseTransform.js decorator.d.ts decorator.js examples capitalize.d.ts capitalize.js exportAs.d.ts exportAs.js functionCallTransform.d.ts functionCallTransform.js includeBytesTransform.d.ts includeBytesTransform.js list.d.ts list.js index.d.ts index.js path.d.ts path.js simpleParser.d.ts simpleParser.js transformer.d.ts transformer.js utils.d.ts utils.js visitor.d.ts visitor.js package.json tsconfig.json webidl-conversions LICENSE.md README.md lib index.js package.json whatwg-url LICENSE.txt README.md lib URL-impl.js URL.js public-api.js url-state-machine.js utils.js package.json which-module CHANGELOG.md README.md index.js package.json which CHANGELOG.md README.md package.json which.js wide-align README.md align.js package.json widest-line index.d.ts index.js package.json readme.md word-wrap README.md index.d.ts index.js package.json wrap-ansi index.js package.json readme.md wrappy README.md package.json wrappy.js write-file-atomic CHANGELOG.md README.md index.js package.json xdg-basedir index.d.ts index.js package.json readme.md y18n CHANGELOG.md README.md build lib cjs.js index.js platform-shims node.js package.json yallist README.md iterator.js package.json yallist.js yargs-parser CHANGELOG.md LICENSE.txt README.md browser.js build lib index.js string-utils.js tokenize-arg-string.js yargs-parser-types.js yargs-parser.js package.json yargs CHANGELOG.md README.md build lib argsert.js command.js completion-templates.js completion.js middleware.js parse-command.js typings common-types.js yargs-parser-types.js usage.js utils apply-extends.js is-promise.js levenshtein.js obj-filter.js process-argv.js set-blocking.js which-module.js validation.js yargs-factory.js yerror.js helpers index.js package.json locales be.json de.json en.json es.json fi.json fr.json hi.json hu.json id.json it.json ja.json ko.json nb.json nl.json nn.json pirate.json pl.json pt.json pt_BR.json ru.json th.json tr.json zh_CN.json zh_TW.json package.json | Inspector mode only ----------- features not yet implemented issues with the tests differences between PCRE and JS regex | | | | | nested-env-vars package-lock.json package.json

# Tools ## clang-format The clang-format checking tools is designed to check changed lines of code compared to given git-refs. ## Migration Script The migration tool is designed to reduce repetitive work in the migration process. However, the script is not aiming to convert every thing for you. There are usually some small fixes and major reconstruction required. ### How To Use To run the conversion script, first make sure you have the latest `node-addon-api` in your `node_modules` directory. ``` npm install node-addon-api ``` Then run the script passing your project directory ``` node ./node_modules/node-addon-api/tools/conversion.js ./ ``` After finish, recompile and debug things that are missed by the script. ### Quick Fixes Here is the list of things that can be fixed easily. 1. Change your methods' return value to void if it doesn't return value to JavaScript. 2. Use `.` to access attribute or to invoke member function in Napi::Object instead of `->`. 3. `Napi::New(env, value);` to `Napi::[Type]::New(env, value); ### Major Reconstructions The implementation of `Napi::ObjectWrap` is significantly different from NAN's. `Napi::ObjectWrap` takes a pointer to the wrapped object and creates a reference to the wrapped object inside ObjectWrap constructor. `Napi::ObjectWrap` also associates wrapped object's instance methods to Javascript module instead of static methods like NAN. So if you use Nan::ObjectWrap in your module, you will need to execute the following steps. 1. Convert your [ClassName]::New function to a constructor function that takes a `Napi::CallbackInfo`. Declare it as ``` [ClassName](const Napi::CallbackInfo& info); ``` and define it as ``` [ClassName]::[ClassName](const Napi::CallbackInfo& info) : Napi::ObjectWrap<[ClassName]>(info){ ... } ``` This way, the `Napi::ObjectWrap` constructor will be invoked after the object has been instantiated and `Napi::ObjectWrap` can use the `this` pointer to create a reference to the wrapped object. 2. Move your original constructor code into the new constructor. Delete your original constructor. 3. In your class initialization function, associate native methods in the following way. ``` Napi::FunctionReference constructor; void [ClassName]::Init(Napi::Env env, Napi::Object exports, Napi::Object module) { Napi::HandleScope scope(env); Napi::Function ctor = DefineClass(env, "Canvas", { InstanceMethod<&[ClassName]::Func1>("Func1"), InstanceMethod<&[ClassName]::Func2>("Func2"), InstanceAccessor<&[ClassName]::ValueGetter>("Value"), StaticMethod<&[ClassName]::StaticMethod>("MethodName"), InstanceValue("Value", Napi::[Type]::New(env, value)), }); constructor = Napi::Persistent(ctor); constructor .SuppressDestruct(); exports.Set("[ClassName]", ctor); } ``` 4. In function where you need to Unwrap the ObjectWrap in NAN like `[ClassName]* native = Nan::ObjectWrap::Unwrap<[ClassName]>(info.This());`, use `this` pointer directly as the unwrapped object as each ObjectWrap instance is associated with a unique object instance. If you still find issues after following this guide, please leave us an issue describing your problem and we will try to resolve it. [](https://app.travis-ci.com/github/dankogai/js-base64) # base64.js Yet another [Base64] transcoder. [Base64]: http://en.wikipedia.org/wiki/Base64 ## Install ```shell $ npm install --save js-base64 ``` ## Usage ### In Browser Locally… ```html <script src="base64.js"></script> ``` … or Directly from CDN. In which case you don't even need to install. ```html <script src="https://cdn.jsdelivr.net/npm/js-base64@3.7.2/base64.min.js"></script> ``` This good old way loads `Base64` in the global context (`window`). Though `Base64.noConflict()` is made available, you should consider using ES6 Module to avoid tainting `window`. ### As an ES6 Module locally… ```javascript import { Base64 } from 'js-base64'; ``` ```javascript // or if you prefer no Base64 namespace import { encode, decode } from 'js-base64'; ``` or even remotely. ```html <script type="module"> // note jsdelivr.net does not automatically minify .mjs import { Base64 } from 'https://cdn.jsdelivr.net/npm/js-base64@3.7.2/base64.mjs'; </script> ``` ```html <script type="module"> // or if you prefer no Base64 namespace import { encode, decode } from 'https://cdn.jsdelivr.net/npm/js-base64@3.7.2/base64.mjs'; </script> ``` ### node.js (commonjs) ```javascript const {Base64} = require('js-base64'); ``` Unlike the case above, the global context is no longer modified. You can also use [esm] to `import` instead of `require`. [esm]: https://github.com/standard-things/esm ```javascript require=require('esm')(module); import {Base64} from 'js-base64'; ``` ## SYNOPSIS ```javascript let latin = 'dankogai'; let utf8 = '小飼弾' let u8s = new Uint8Array([100,97,110,107,111,103,97,105]); Base64.encode(latin); // ZGFua29nYWk= Base64.encode(latin, true)); // ZGFua29nYWk skips padding Base64.encodeURI(latin)); // ZGFua29nYWk Base64.btoa(latin); // ZGFua29nYWk= Base64.btoa(utf8); // raises exception Base64.fromUint8Array(u8s); // ZGFua29nYWk= Base64.fromUint8Array(u8s, true); // ZGFua29nYW which is URI safe Base64.encode(utf8); // 5bCP6aO85by+ Base64.encode(utf8, true) // 5bCP6aO85by- Base64.encodeURI(utf8); // 5bCP6aO85by- ``` ```javascript Base64.decode( 'ZGFua29nYWk=');// dankogai Base64.decode( 'ZGFua29nYWk'); // dankogai Base64.atob( 'ZGFua29nYWk=');// dankogai Base64.atob( '5bCP6aO85by+');// '小飼弾' which is nonsense Base64.toUint8Array('ZGFua29nYWk=');// u8s above Base64.decode( '5bCP6aO85by+');// 小飼弾 // note .decodeURI() is unnecessary since it accepts both flavors Base64.decode( '5bCP6aO85by-');// 小飼弾 ``` ```javascript Base64.isValid(0); // false: 0 is not string Base64.isValid(''); // true: a valid Base64-encoded empty byte Base64.isValid('ZA=='); // true: a valid Base64-encoded 'd' Base64.isValid('Z A='); // true: whitespaces are okay Base64.isValid('ZA'); // true: padding ='s can be omitted Base64.isValid('++'); // true: can be non URL-safe Base64.isValid('--'); // true: or URL-safe Base64.isValid('+-'); // false: can't mix both ``` ### Built-in Extensions By default `Base64` leaves built-in prototypes untouched. But you can extend them as below. ```javascript // you have to explicitly extend String.prototype Base64.extendString(); // once extended, you can do the following 'dankogai'.toBase64(); // ZGFua29nYWk= '小飼弾'.toBase64(); // 5bCP6aO85by+ '小飼弾'.toBase64(true); // 5bCP6aO85by- '小飼弾'.toBase64URI(); // 5bCP6aO85by- ab alias of .toBase64(true) '小飼弾'.toBase64URL(); // 5bCP6aO85by- an alias of .toBase64URI() 'ZGFua29nYWk='.fromBase64(); // dankogai '5bCP6aO85by+'.fromBase64(); // 小飼弾 '5bCP6aO85by-'.fromBase64(); // 小飼弾 '5bCP6aO85by-'.toUint8Array();// u8s above ``` ```javascript // you have to explicitly extend Uint8Array.prototype Base64.extendUint8Array(); // once extended, you can do the following u8s.toBase64(); // 'ZGFua29nYWk=' u8s.toBase64URI(); // 'ZGFua29nYWk' u8s.toBase64URL(); // 'ZGFua29nYWk' an alias of .toBase64URI() ``` ```javascript // extend all at once Base64.extendBuiltins() ``` ## `.decode()` vs `.atob` (and `.encode()` vs `btoa()`) Suppose you have: ``` var pngBase64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII="; ``` Which is a Base64-encoded 1x1 transparent PNG, **DO NOT USE** `Base64.decode(pngBase64)`.  Use `Base64.atob(pngBase64)` instead.  `Base64.decode()` decodes to UTF-8 string while `Base64.atob()` decodes to bytes, which is compatible to browser built-in `atob()` (Which is absent in node.js).  The same rule applies to the opposite direction. Or even better, `Base64.toUint8Array(pngBase64)`. ### If you really, really need an ES5 version You can transpiles to an ES5 that runs on IEs before 11. Do the following in your shell. ```shell $ make base64.es5.js ``` ## Brief History * Since version 3.3 it is written in TypeScript. Now `base64.mjs` is compiled from `base64.ts` then `base64.js` is generated from `base64.mjs`. * Since version 3.7 `base64.js` is ES5-compatible again (hence IE11-compabile). * Since 3.0 `js-base64` switch to ES2015 module so it is no longer compatible with legacy browsers like IE (see above) TweetNaCl.js ============ Port of [TweetNaCl](http://tweetnacl.cr.yp.to) / [NaCl](http://nacl.cr.yp.to/) to JavaScript for modern browsers and Node.js. Public domain. [ ](https://travis-ci.org/dchest/tweetnacl-js) Demo: <https://dchest.github.io/tweetnacl-js/> Documentation ============= * [Overview](#overview) * [Audits](#audits) * [Installation](#installation) * [Examples](#examples) * [Usage](#usage) * [Public-key authenticated encryption (box)](#public-key-authenticated-encryption-box) * [Secret-key authenticated encryption (secretbox)](#secret-key-authenticated-encryption-secretbox) * [Scalar multiplication](#scalar-multiplication) * [Signatures](#signatures) * [Hashing](#hashing) * [Random bytes generation](#random-bytes-generation) * [Constant-time comparison](#constant-time-comparison) * [System requirements](#system-requirements) * [Development and testing](#development-and-testing) * [Benchmarks](#benchmarks) * [Contributors](#contributors) * [Who uses it](#who-uses-it) Overview -------- The primary goal of this project is to produce a translation of TweetNaCl to JavaScript which is as close as possible to the original C implementation, plus a thin layer of idiomatic high-level API on top of it. There are two versions, you can use either of them: * `nacl.js` is the port of TweetNaCl with minimum differences from the original + high-level API. * `nacl-fast.js` is like `nacl.js`, but with some functions replaced with faster versions. (Used by default when importing NPM package.) Audits ------ TweetNaCl.js has been audited by [Cure53](https://cure53.de/) in January-February 2017 (audit was sponsored by [Deletype](https://deletype.com)): > The overall outcome of this audit signals a particularly positive assessment > for TweetNaCl-js, as the testing team was unable to find any security > problems in the library. It has to be noted that this is an exceptionally > rare result of a source code audit for any project and must be seen as a true > testament to a development proceeding with security at its core. > > To reiterate, the TweetNaCl-js project, the source code was found to be > bug-free at this point. > > [...] > > In sum, the testing team is happy to recommend the TweetNaCl-js project as > likely one of the safer and more secure cryptographic tools among its > competition. [Read full audit report](https://cure53.de/tweetnacl.pdf) Installation ------------ You can install TweetNaCl.js via a package manager: [Yarn](https://yarnpkg.com/): $ yarn add tweetnacl [NPM](https://www.npmjs.org/): $ npm install tweetnacl or [download source code](https://github.com/dchest/tweetnacl-js/releases). Examples -------- You can find usage examples in our [wiki](https://github.com/dchest/tweetnacl-js/wiki/Examples). Usage ----- All API functions accept and return bytes as `Uint8Array`s. If you need to encode or decode strings, use functions from <https://github.com/dchest/tweetnacl-util-js> or one of the more robust codec packages. In Node.js v4 and later `Buffer` objects are backed by `Uint8Array`s, so you can freely pass them to TweetNaCl.js functions as arguments. The returned objects are still `Uint8Array`s, so if you need `Buffer`s, you'll have to convert them manually; make sure to convert using copying: `Buffer.from(array)` (or `new Buffer(array)` in Node.js v4 or earlier), instead of sharing: `Buffer.from(array.buffer)` (or `new Buffer(array.buffer)` Node 4 or earlier), because some functions return subarrays of their buffers. ### Public-key authenticated encryption (box) Implements *x25519-xsalsa20-poly1305*. #### nacl.box.keyPair() Generates a new random key pair for box and returns it as an object with `publicKey` and `secretKey` members: { publicKey: ..., // Uint8Array with 32-byte public key secretKey: ... // Uint8Array with 32-byte secret key } #### nacl.box.keyPair.fromSecretKey(secretKey) Returns a key pair for box with public key corresponding to the given secret key. #### nacl.box(message, nonce, theirPublicKey, mySecretKey) Encrypts and authenticates message using peer's public key, our secret key, and the given nonce, which must be unique for each distinct message for a key pair. Returns an encrypted and authenticated message, which is `nacl.box.overheadLength` longer than the original message. #### nacl.box.open(box, nonce, theirPublicKey, mySecretKey) Authenticates and decrypts the given box with peer's public key, our secret key, and the given nonce. Returns the original message, or `null` if authentication fails. #### nacl.box.before(theirPublicKey, mySecretKey) Returns a precomputed shared key which can be used in `nacl.box.after` and `nacl.box.open.after`. #### nacl.box.after(message, nonce, sharedKey) Same as `nacl.box`, but uses a shared key precomputed with `nacl.box.before`. #### nacl.box.open.after(box, nonce, sharedKey) Same as `nacl.box.open`, but uses a shared key precomputed with `nacl.box.before`. #### Constants ##### nacl.box.publicKeyLength = 32 Length of public key in bytes. ##### nacl.box.secretKeyLength = 32 Length of secret key in bytes. ##### nacl.box.sharedKeyLength = 32 Length of precomputed shared key in bytes. ##### nacl.box.nonceLength = 24 Length of nonce in bytes. ##### nacl.box.overheadLength = 16 Length of overhead added to box compared to original message. ### Secret-key authenticated encryption (secretbox) Implements *xsalsa20-poly1305*. #### nacl.secretbox(message, nonce, key) Encrypts and authenticates message using the key and the nonce. The nonce must be unique for each distinct message for this key. Returns an encrypted and authenticated message, which is `nacl.secretbox.overheadLength` longer than the original message. #### nacl.secretbox.open(box, nonce, key) Authenticates and decrypts the given secret box using the key and the nonce. Returns the original message, or `null` if authentication fails. #### Constants ##### nacl.secretbox.keyLength = 32 Length of key in bytes. ##### nacl.secretbox.nonceLength = 24 Length of nonce in bytes. ##### nacl.secretbox.overheadLength = 16 Length of overhead added to secret box compared to original message. ### Scalar multiplication Implements *x25519*. #### nacl.scalarMult(n, p) Multiplies an integer `n` by a group element `p` and returns the resulting group element. #### nacl.scalarMult.base(n) Multiplies an integer `n` by a standard group element and returns the resulting group element. #### Constants ##### nacl.scalarMult.scalarLength = 32 Length of scalar in bytes. ##### nacl.scalarMult.groupElementLength = 32 Length of group element in bytes. ### Signatures Implements [ed25519](http://ed25519.cr.yp.to). #### nacl.sign.keyPair() Generates new random key pair for signing and returns it as an object with `publicKey` and `secretKey` members: { publicKey: ..., // Uint8Array with 32-byte public key secretKey: ... // Uint8Array with 64-byte secret key } #### nacl.sign.keyPair.fromSecretKey(secretKey) Returns a signing key pair with public key corresponding to the given 64-byte secret key. The secret key must have been generated by `nacl.sign.keyPair` or `nacl.sign.keyPair.fromSeed`. #### nacl.sign.keyPair.fromSeed(seed) Returns a new signing key pair generated deterministically from a 32-byte seed. The seed must contain enough entropy to be secure. This method is not recommended for general use: instead, use `nacl.sign.keyPair` to generate a new key pair from a random seed. #### nacl.sign(message, secretKey) Signs the message using the secret key and returns a signed message. #### nacl.sign.open(signedMessage, publicKey) Verifies the signed message and returns the message without signature. Returns `null` if verification failed. #### nacl.sign.detached(message, secretKey) Signs the message using the secret key and returns a signature. #### nacl.sign.detached.verify(message, signature, publicKey) Verifies the signature for the message and returns `true` if verification succeeded or `false` if it failed. #### Constants ##### nacl.sign.publicKeyLength = 32 Length of signing public key in bytes. ##### nacl.sign.secretKeyLength = 64 Length of signing secret key in bytes. ##### nacl.sign.seedLength = 32 Length of seed for `nacl.sign.keyPair.fromSeed` in bytes. ##### nacl.sign.signatureLength = 64 Length of signature in bytes. ### Hashing Implements *SHA-512*. #### nacl.hash(message) Returns SHA-512 hash of the message. #### Constants ##### nacl.hash.hashLength = 64 Length of hash in bytes. ### Random bytes generation #### nacl.randomBytes(length) Returns a `Uint8Array` of the given length containing random bytes of cryptographic quality. **Implementation note** TweetNaCl.js uses the following methods to generate random bytes, depending on the platform it runs on: * `window.crypto.getRandomValues` (WebCrypto standard) * `window.msCrypto.getRandomValues` (Internet Explorer 11) * `crypto.randomBytes` (Node.js) If the platform doesn't provide a suitable PRNG, the following functions, which require random numbers, will throw exception: * `nacl.randomBytes` * `nacl.box.keyPair` * `nacl.sign.keyPair` Other functions are deterministic and will continue working. If a platform you are targeting doesn't implement secure random number generator, but you somehow have a cryptographically-strong source of entropy (not `Math.random`!), and you know what you are doing, you can plug it into TweetNaCl.js like this: nacl.setPRNG(function(x, n) { // ... copy n random bytes into x ... }); Note that `nacl.setPRNG` *completely replaces* internal random byte generator with the one provided. ### Constant-time comparison #### nacl.verify(x, y) Compares `x` and `y` in constant time and returns `true` if their lengths are non-zero and equal, and their contents are equal. Returns `false` if either of the arguments has zero length, or arguments have different lengths, or their contents differ. System requirements ------------------- TweetNaCl.js supports modern browsers that have a cryptographically secure pseudorandom number generator and typed arrays, including the latest versions of: * Chrome * Firefox * Safari (Mac, iOS) * Internet Explorer 11 Other systems: * Node.js Development and testing ------------------------ Install NPM modules needed for development: $ npm install To build minified versions: $ npm run build Tests use minified version, so make sure to rebuild it every time you change `nacl.js` or `nacl-fast.js`. ### Testing To run tests in Node.js: $ npm run test-node By default all tests described here work on `nacl.min.js`. To test other versions, set environment variable `NACL_SRC` to the file name you want to test. For example, the following command will test fast minified version: $ NACL_SRC=nacl-fast.min.js npm run test-node To run full suite of tests in Node.js, including comparing outputs of JavaScript port to outputs of the original C version: $ npm run test-node-all To prepare tests for browsers: $ npm run build-test-browser and then open `test/browser/test.html` (or `test/browser/test-fast.html`) to run them. To run tests in both Node and Electron: $ npm test ### Benchmarking To run benchmarks in Node.js: $ npm run bench $ NACL_SRC=nacl-fast.min.js npm run bench To run benchmarks in a browser, open `test/benchmark/bench.html` (or `test/benchmark/bench-fast.html`). Benchmarks ---------- For reference, here are benchmarks from MacBook Pro (Retina, 13-inch, Mid 2014) laptop with 2.6 GHz Intel Core i5 CPU (Intel) in Chrome 53/OS X and Xiaomi Redmi Note 3 smartphone with 1.8 GHz Qualcomm Snapdragon 650 64-bit CPU (ARM) in Chrome 52/Android: | | nacl.js Intel | nacl-fast.js Intel | nacl.js ARM | nacl-fast.js ARM | | ------------- |:-------------:|:-------------------:|:-------------:|:-----------------:| | salsa20 | 1.3 MB/s | 128 MB/s | 0.4 MB/s | 43 MB/s | | poly1305 | 13 MB/s | 171 MB/s | 4 MB/s | 52 MB/s | | hash | 4 MB/s | 34 MB/s | 0.9 MB/s | 12 MB/s | | secretbox 1K | 1113 op/s | 57583 op/s | 334 op/s | 14227 op/s | | box 1K | 145 op/s | 718 op/s | 37 op/s | 368 op/s | | scalarMult | 171 op/s | 733 op/s | 56 op/s | 380 op/s | | sign | 77 op/s | 200 op/s | 20 op/s | 61 op/s | | sign.open | 39 op/s | 102 op/s | 11 op/s | 31 op/s | (You can run benchmarks on your devices by clicking on the links at the bottom of the [home page](https://tweetnacl.js.org)). In short, with *nacl-fast.js* and 1024-byte messages you can expect to encrypt and authenticate more than 57000 messages per second on a typical laptop or more than 14000 messages per second on a $170 smartphone, sign about 200 and verify 100 messages per second on a laptop or 60 and 30 messages per second on a smartphone, per CPU core (with Web Workers you can do these operations in parallel), which is good enough for most applications. Contributors ------------ See AUTHORS.md file. Third-party libraries based on TweetNaCl.js ------------------------------------------- * [forward-secrecy](https://github.com/alax/forward-secrecy) — Axolotl ratchet implementation * [nacl-stream](https://github.com/dchest/nacl-stream-js) - streaming encryption * [tweetnacl-auth-js](https://github.com/dchest/tweetnacl-auth-js) — implementation of [`crypto_auth`](http://nacl.cr.yp.to/auth.html) * [tweetnacl-sealed-box](https://github.com/whs/tweetnacl-sealed-box) — implementation of [`sealed boxes`](https://download.libsodium.org/doc/public-key_cryptography/sealed_boxes.html) * [chloride](https://github.com/dominictarr/chloride) - unified API for various NaCl modules Who uses it ----------- Some notable users of TweetNaCl.js: * [GitHub](https://github.com) * [MEGA](https://github.com/meganz/webclient) * [Stellar](https://www.stellar.org/) * [miniLock](https://github.com/kaepora/miniLock) # flat-cache > A stupidly simple key/value storage using files to persist the data [](https://npmjs.org/package/flat-cache) [](https://travis-ci.org/royriojas/flat-cache) ## install ```bash npm i --save flat-cache ``` ## Usage ```js var flatCache = require('flat-cache') // loads the cache, if one does not exists for the given // Id a new one will be prepared to be created var cache = flatCache.load('cacheId'); // sets a key on the cache cache.setKey('key', { foo: 'var' }); // get a key from the cache cache.getKey('key') // { foo: 'var' } // fetch the entire persisted object cache.all() // { 'key': { foo: 'var' } } // remove a key cache.removeKey('key'); // removes a key from the cache // save it to disk cache.save(); // very important, if you don't save no changes will be persisted. // cache.save( true /* noPrune */) // can be used to prevent the removal of non visited keys // loads the cache from a given directory, if one does // not exists for the given Id a new one will be prepared to be created var cache = flatCache.load('cacheId', path.resolve('./path/to/folder')); // The following methods are useful to clear the cache // delete a given cache flatCache.clearCacheById('cacheId') // removes the cacheId document if one exists. // delete all cache flatCache.clearAll(); // remove the cache directory ``` ## Motivation for this module I needed a super simple and dumb **in-memory cache** with optional disk persistance in order to make a script that will beutify files with `esformatter` only execute on the files that were changed since the last run. To make that possible we need to store the `fileSize` and `modificationTime` of the files. So a simple `key/value` storage was needed and Bam! this module was born. ## Important notes - If no directory is especified when the `load` method is called, a folder named `.cache` will be created inside the module directory when `cache.save` is called. If you're committing your `node_modules` to any vcs, you might want to ignore the default `.cache` folder, or specify a custom directory. - The values set on the keys of the cache should be `stringify-able` ones, meaning no circular references - All the changes to the cache state are done to memory - I could have used a timer or `Object.observe` to deliver the changes to disk, but I wanted to keep this module intentionally dumb and simple - Non visited keys are removed when `cache.save()` is called. If this is not desired, you can pass `true` to the save call like: `cache.save( true /* noPrune */ )`. ## License MIT ## Changelog [changelog](./changelog.md) ## HIDAPI library for Windows, Linux, FreeBSD and macOS | CI instance | Status | |----------------------|--------| | `macOS master` | [](https://travis-ci.org/libusb/hidapi) | | `Windows master` | [](https://ci.appveyor.com/project/Youw/hidapi/branch/master) | | `Linux/BSD, last build (branch/PR)` | [](https://builds.sr.ht/~qbicz/hidapi?) | HIDAPI is a multi-platform library which allows an application to interface with USB and Bluetooth HID-Class devices on Windows, Linux, FreeBSD, and macOS. HIDAPI can be either built as a shared library (`.so`, `.dll` or `.dylib`) or can be embedded directly into a target application by adding a single source file (per platform) and a single header. HIDAPI library was originally developed by Alan Ott ([signal11](https://github.com/signal11)). It was moved to [libusb/hidapi](https://github.com/libusb/hidapi) on June 4th, 2019, in order to merge important bugfixes and continue development of the library. ## Table of Contents * [About](#about) * [What Does the API Look Like?](#what-does-the-api-look-like) * [License](#license) * [Download](#download) * [Build Instructions](#build-instructions) * [Prerequisites](#prerequisites) * [Linux](#linux) * [FreeBSD](#freebsd) * [Mac](#mac) * [Windows](#windows) * [Building HIDAPI into a shared library on Unix Platforms](#building-hidapi-into-a-shared-library-on-unix-platforms) * [Building the manual way on Unix platforms](#building-the-manual-way-on-unix-platforms) * [Building on Windows](#building-on-windows) * [Cross Compiling](#cross-compiling) * [Prerequisites](#prerequisites-1) * [Building HIDAPI](#building-hidapi) ## About HIDAPI has five back-ends: * Windows (using `hid.dll`) * Linux/hidraw (using the Kernel's hidraw driver) * Linux/libusb (using libusb-1.0) * FreeBSD (using libusb-1.0) * Mac (using IOHidManager) On Linux, either the hidraw or the libusb back-end can be used. There are tradeoffs, and the functionality supported is slightly different. __Linux/hidraw__ (`linux/hid.c`): This back-end uses the hidraw interface in the Linux kernel, and supports both USB and Bluetooth HID devices. It requires kernel version at least 2.6.39 to build. In addition, it will only communicate with devices which have hidraw nodes associated with them. Keyboards, mice, and some other devices which are blacklisted from having hidraw nodes will not work. Fortunately, for nearly all the uses of hidraw, this is not a problem. __Linux/FreeBSD/libusb__ (`libusb/hid.c`): This back-end uses libusb-1.0 to communicate directly to a USB device. This back-end will of course not work with Bluetooth devices. HIDAPI also comes with a Test GUI. The Test GUI is cross-platform and uses Fox Toolkit <http://www.fox-toolkit.org>. It will build on every platform which HIDAPI supports. Since it relies on a 3rd party library, building it is optional but recommended because it is so useful when debugging hardware. ## What Does the API Look Like? The API provides the most commonly used HID functions including sending and receiving of input, output, and feature reports. The sample program, which communicates with a heavily hacked up version of the Microchip USB Generic HID sample looks like this (with error checking removed for simplicity): **Warning: Only run the code you understand, and only when it conforms to the device spec. Writing data at random to your HID devices can break them.** ```c #ifdef WIN32 #include <windows.h> #endif #include <stdio.h> #include <stdlib.h> #include "hidapi.h" #define MAX_STR 255 int main(int argc, char* argv[]) { int res; unsigned char buf[65]; wchar_t wstr[MAX_STR]; hid_device *handle; int i; // Initialize the hidapi library res = hid_init(); // Open the device using the VID, PID, // and optionally the Serial number. handle = hid_open(0x4d8, 0x3f, NULL); // Read the Manufacturer String res = hid_get_manufacturer_string(handle, wstr, MAX_STR); wprintf(L"Manufacturer String: %s\n", wstr); // Read the Product String res = hid_get_product_string(handle, wstr, MAX_STR); wprintf(L"Product String: %s\n", wstr); // Read the Serial Number String res = hid_get_serial_number_string(handle, wstr, MAX_STR); wprintf(L"Serial Number String: (%d) %s\n", wstr[0], wstr); // Read Indexed String 1 res = hid_get_indexed_string(handle, 1, wstr, MAX_STR); wprintf(L"Indexed String 1: %s\n", wstr); // Toggle LED (cmd 0x80). The first byte is the report number (0x0). buf[0] = 0x0; buf[1] = 0x80; res = hid_write(handle, buf, 65); // Request state (cmd 0x81). The first byte is the report number (0x0). buf[0] = 0x0; buf[1] = 0x81; res = hid_write(handle, buf, 65); // Read requested state res = hid_read(handle, buf, 65); // Print out the returned buffer. for (i = 0; i < 4; i++) printf("buf[%d]: %d\n", i, buf[i]); // Close the device hid_close(handle); // Finalize the hidapi library res = hid_exit(); return 0; } ``` You can also use [hidtest/test.c](hidtest/test.c) as a starting point for your applications. ## License HIDAPI may be used by one of three licenses as outlined in [LICENSE.txt](LICENSE.txt). ## Download HIDAPI can be downloaded from GitHub ```sh git clone git://github.com/libusb/hidapi.git ``` ## Build Instructions This section is long. Don't be put off by this. It's not long because it's complicated to build HIDAPI; it's quite the opposite. This section is long because of the flexibility of HIDAPI and the large number of ways in which it can be built and used. You will likely pick a single build method. HIDAPI can be built in several different ways. If you elect to build a shared library, you will need to build it from the HIDAPI source distribution. If you choose instead to embed HIDAPI directly into your application, you can skip the building and look at the provided platform Makefiles for guidance. These platform Makefiles are located in `linux/`, `libusb/`, `mac/` and `windows/` and are called `Makefile-manual`. In addition, Visual Studio projects are provided. Even if you're going to embed HIDAPI into your project, it is still beneficial to build the example programs. ### Prerequisites: #### Linux: On Linux, you will need to install development packages for libudev, libusb and optionally Fox-toolkit (for the test GUI). On Debian/Ubuntu systems these can be installed by running: ```sh sudo apt-get install libudev-dev libusb-1.0-0-dev libfox-1.6-dev ``` If you downloaded the source directly from the git repository (using git clone), you'll need Autotools: ```sh sudo apt-get install autotools-dev autoconf automake libtool ``` #### FreeBSD: On FreeBSD you will need to install GNU make, libiconv, and optionally Fox-Toolkit (for the test GUI). This is done by running the following: ```sh pkg_add -r gmake libiconv fox16 ``` If you downloaded the source directly from the git repository (using git clone), you'll need Autotools: ```sh pkg_add -r autotools ``` #### Mac: On Mac, you will need to install Fox-Toolkit if you wish to build the Test GUI. There are two ways to do this, and each has a slight complication. Which method you use depends on your use case. If you wish to build the Test GUI just for your own testing on your own computer, then the easiest method is to install Fox-Toolkit using ports: ```sh sudo port install fox ``` If you wish to build the TestGUI app bundle to redistribute to others, you will need to install Fox-toolkit from source. This is because the version of fox that gets installed using ports uses the ports X11 libraries which are not compatible with the Apple X11 libraries. If you install Fox with ports and then try to distribute your built app bundle, it will simply fail to run on other systems. To install Fox-Toolkit manually, download the source package from <http://www.fox-toolkit.org>, extract it, and run the following from within the extracted source: ```sh ./configure && make && make install ``` #### Windows: On Windows, if you want to build the test GUI, you will need to get the `hidapi-externals.zip` package from the download site. This contains pre-built binaries for Fox-toolkit. Extract `hidapi-externals.zip` just outside of hidapi, so that hidapi-externals and hidapi are on the same level, as shown: ``` Parent_Folder | +hidapi +hidapi-externals ``` Again, this step is not required if you do not wish to build the test GUI. ### Building HIDAPI into a shared library on Unix Platforms: On Unix-like systems such as Linux, FreeBSD, macOS, and even Windows, using MinGW or Cygwin, the easiest way to build a standard system-installed shared library is to use the GNU Autotools build system. If you checked out the source from the git repository, run the following: ```sh ./bootstrap ./configure make make install # as root, or using sudo ``` If you downloaded a source package (i.e.: if you did not run git clone), you can skip the `./bootstrap` step. `./configure` can take several arguments which control the build. The two most likely to be used are: ```sh --enable-testgui Enable build of the Test GUI. This requires Fox toolkit to be installed. Instructions for installing Fox-Toolkit on each platform are in the Prerequisites section above. --prefix=/usr Specify where you want the output headers and libraries to be installed. The example above will put the headers in /usr/include and the binaries in /usr/lib. The default is to install into /usr/local which is fine on most systems. ``` ### Building the manual way on Unix platforms: Manual Makefiles are provided mostly to give the user and idea what it takes to build a program which embeds HIDAPI directly inside of it. These should really be used as examples only. If you want to build a system-wide shared library, use the Autotools method described above. To build HIDAPI using the manual Makefiles, change to the directory of your platform and run make. For example, on Linux run: ```sh cd linux/ make -f Makefile-manual ``` To build the Test GUI using the manual makefiles: ```sh cd testgui/ make -f Makefile-manual ``` ### Building on Windows: To build the HIDAPI DLL on Windows using Visual Studio, build the `.sln` file in the `windows/` directory. To build the Test GUI on windows using Visual Studio, build the `.sln` file in the `testgui/` directory. To build HIDAPI using MinGW or Cygwin using Autotools, use the instructions in the section [Building HIDAPI into a shared library on Unix Platforms](#building-hidapi-into-a-shared-library-on-unix-platforms) above. Note that building the Test GUI with MinGW or Cygwin will require the Windows procedure in the [Prerequisites](#prerequisites-1) section above (i.e.: `hidapi-externals.zip`). To build HIDAPI using MinGW using the Manual Makefiles, see the section [Building the manual way on Unix platforms](#building-the-manual-way-on-unix-platforms) above. HIDAPI can also be built using the Windows DDK (now also called the Windows Driver Kit or WDK). This method was originally required for the HIDAPI build but not anymore. However, some users still prefer this method. It is not as well supported anymore but should still work. Patches are welcome if it does not. To build using the DDK: 1. Install the Windows Driver Kit (WDK) from Microsoft. 2. From the Start menu, in the Windows Driver Kits folder, select Build Environments, then your operating system, then the x86 Free Build Environment (or one that is appropriate for your system). 3. From the console, change directory to the `windows/ddk_build/` directory, which is part of the HIDAPI distribution. 4. Type build. 5. You can find the output files (DLL and LIB) in a subdirectory created by the build system which is appropriate for your environment. On Windows XP, this directory is `objfre_wxp_x86/i386`. ## Cross Compiling This section talks about cross compiling HIDAPI for Linux using Autotools. This is useful for using HIDAPI on embedded Linux targets. These instructions assume the most raw kind of embedded Linux build, where all prerequisites will need to be built first. This process will of course vary based on your embedded Linux build system if you are using one, such as OpenEmbedded or Buildroot. For the purpose of this section, it will be assumed that the following environment variables are exported. ```sh $ export STAGING=$HOME/out $ export HOST=arm-linux ``` `STAGING` and `HOST` can be modified to suit your setup. ### Prerequisites Note that the build of libudev is the very basic configuration. Build libusb. From the libusb source directory, run: ```sh ./configure --host=$HOST --prefix=$STAGING make make install ``` Build libudev. From the libudev source directory, run: ```sh ./configure --disable-gudev --disable-introspection --disable-hwdb \ --host=$HOST --prefix=$STAGING make make install ``` ### Building HIDAPI Build HIDAPI: ``` PKG_CONFIG_DIR= \ PKG_CONFIG_LIBDIR=$STAGING/lib/pkgconfig:$STAGING/share/pkgconfig \ PKG_CONFIG_SYSROOT_DIR=$STAGING \ ./configure --host=$HOST --prefix=$STAGING ``` # require-main-filename [](https://travis-ci.org/yargs/require-main-filename) [](https://coveralls.io/r/yargs/require-main-filename?branch=master) [](https://www.npmjs.com/package/require-main-filename) `require.main.filename` is great for figuring out the entry point for the current application. This can be combined with a module like [pkg-conf](https://www.npmjs.com/package/pkg-conf) to, _as if by magic_, load top-level configuration. Unfortunately, `require.main.filename` sometimes fails when an application is executed with an alternative process manager, e.g., [iisnode](https://github.com/tjanczuk/iisnode). `require-main-filename` is a shim that addresses this problem. ## Usage ```js var main = require('require-main-filename')() // use main as an alternative to require.main.filename. ``` ## License ISC Browser-friendly inheritance fully compatible with standard node.js [inherits](http://nodejs.org/api/util.html#util_util_inherits_constructor_superconstructor). This package exports standard `inherits` from node.js `util` module in node environment, but also provides alternative browser-friendly implementation through [browser field](https://gist.github.com/shtylman/4339901). Alternative implementation is a literal copy of standard one located in standalone module to avoid requiring of `util`. It also has a shim for old browsers with no `Object.create` support. While keeping you sure you are using standard `inherits` implementation in node.js environment, it allows bundlers such as [browserify](https://github.com/substack/node-browserify) to not include full `util` package to your client code if all you need is just `inherits` function. It worth, because browser shim for `util` package is large and `inherits` is often the single function you need from it. It's recommended to use this package instead of `require('util').inherits` for any code that has chances to be used not only in node.js but in browser too. ## usage ```js var inherits = require('inherits'); // then use exactly as the standard one ``` ## note on version ~1.0 Version ~1.0 had completely different motivation and is not compatible neither with 2.0 nor with standard node.js `inherits`. If you are using version ~1.0 and planning to switch to ~2.0, be careful: * new version uses `super_` instead of `super` for referencing superclass * new version overwrites current prototype while old one preserves any existing fields on it # to-regex-range [](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W8YFZ425KND68) [](https://www.npmjs.com/package/to-regex-range) [](https://npmjs.org/package/to-regex-range) [](https://npmjs.org/package/to-regex-range) [](https://travis-ci.org/micromatch/to-regex-range) > Pass two numbers, get a regex-compatible source string for matching ranges. Validated against more than 2.78 million test assertions. Please consider following this project's author, [Jon Schlinkert](https://github.com/jonschlinkert), and consider starring the project to show your :heart: and support. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save to-regex-range ``` <details> <summary><strong>What does this do?</strong></summary> <br> This libary generates the `source` string to be passed to `new RegExp()` for matching a range of numbers. **Example** ```js const toRegexRange = require('to-regex-range'); const regex = new RegExp(toRegexRange('15', '95')); ``` A string is returned so that you can do whatever you need with it before passing it to `new RegExp()` (like adding `^` or `$` boundaries, defining flags, or combining it another string). <br> </details> <details> <summary><strong>Why use this library?</strong></summary> <br> ### Convenience Creating regular expressions for matching numbers gets deceptively complicated pretty fast. For example, let's say you need a validation regex for matching part of a user-id, postal code, social security number, tax id, etc: * regex for matching `1` => `/1/` (easy enough) * regex for matching `1` through `5` => `/[1-5]/` (not bad...) * regex for matching `1` or `5` => `/(1|5)/` (still easy...) * regex for matching `1` through `50` => `/([1-9]|[1-4][0-9]|50)/` (uh-oh...) * regex for matching `1` through `55` => `/([1-9]|[1-4][0-9]|5[0-5])/` (no prob, I can do this...) * regex for matching `1` through `555` => `/([1-9]|[1-9][0-9]|[1-4][0-9]{2}|5[0-4][0-9]|55[0-5])/` (maybe not...) * regex for matching `0001` through `5555` => `/(0{3}[1-9]|0{2}[1-9][0-9]|0[1-9][0-9]{2}|[1-4][0-9]{3}|5[0-4][0-9]{2}|55[0-4][0-9]|555[0-5])/` (okay, I get the point!) The numbers are contrived, but they're also really basic. In the real world you might need to generate a regex on-the-fly for validation. **Learn more** If you're interested in learning more about [character classes](http://www.regular-expressions.info/charclass.html) and other regex features, I personally have always found [regular-expressions.info](http://www.regular-expressions.info/charclass.html) to be pretty useful. ### Heavily tested As of April 07, 2019, this library runs [>1m test assertions](./test/test.js) against generated regex-ranges to provide brute-force verification that results are correct. Tests run in ~280ms on my MacBook Pro, 2.5 GHz Intel Core i7. ### Optimized Generated regular expressions are optimized: * duplicate sequences and character classes are reduced using quantifiers * smart enough to use `?` conditionals when number(s) or range(s) can be positive or negative * uses fragment caching to avoid processing the same exact string more than once <br> </details> ## Usage Add this library to your javascript application with the following line of code ```js const toRegexRange = require('to-regex-range'); ``` The main export is a function that takes two integers: the `min` value and `max` value (formatted as strings or numbers). ```js const source = toRegexRange('15', '95'); //=> 1[5-9]|[2-8][0-9]|9[0-5] const regex = new RegExp(`^${source}$`); console.log(regex.test('14')); //=> false console.log(regex.test('50')); //=> true console.log(regex.test('94')); //=> true console.log(regex.test('96')); //=> false ``` ## Options ### options.capture **Type**: `boolean` **Deafault**: `undefined` Wrap the returned value in parentheses when there is more than one regex condition. Useful when you're dynamically generating ranges. ```js console.log(toRegexRange('-10', '10')); //=> -[1-9]|-?10|[0-9] console.log(toRegexRange('-10', '10', { capture: true })); //=> (-[1-9]|-?10|[0-9]) ``` ### options.shorthand **Type**: `boolean` **Deafault**: `undefined` Use the regex shorthand for `[0-9]`: ```js console.log(toRegexRange('0', '999999')); //=> [0-9]|[1-9][0-9]{1,5} console.log(toRegexRange('0', '999999', { shorthand: true })); //=> \d|[1-9]\d{1,5} ``` ### options.relaxZeros **Type**: `boolean` **Default**: `true` This option relaxes matching for leading zeros when when ranges are zero-padded. ```js const source = toRegexRange('-0010', '0010'); const regex = new RegExp(`^${source}$`); console.log(regex.test('-10')); //=> true console.log(regex.test('-010')); //=> true console.log(regex.test('-0010')); //=> true console.log(regex.test('10')); //=> true console.log(regex.test('010')); //=> true console.log(regex.test('0010')); //=> true ``` When `relaxZeros` is false, matching is strict: ```js const source = toRegexRange('-0010', '0010', { relaxZeros: false }); const regex = new RegExp(`^${source}$`); console.log(regex.test('-10')); //=> false console.log(regex.test('-010')); //=> false console.log(regex.test('-0010')); //=> true console.log(regex.test('10')); //=> false console.log(regex.test('010')); //=> false console.log(regex.test('0010')); //=> true ``` ## Examples | **Range** | **Result** | **Compile time** | | --- | --- | --- | | `toRegexRange(-10, 10)` | `-[1-9]\|-?10\|[0-9]` | _132μs_ | | `toRegexRange(-100, -10)` | `-1[0-9]\|-[2-9][0-9]\|-100` | _50μs_ | | `toRegexRange(-100, 100)` | `-[1-9]\|-?[1-9][0-9]\|-?100\|[0-9]` | _42μs_ | | `toRegexRange(001, 100)` | `0{0,2}[1-9]\|0?[1-9][0-9]\|100` | _109μs_ | | `toRegexRange(001, 555)` | `0{0,2}[1-9]\|0?[1-9][0-9]\|[1-4][0-9]{2}\|5[0-4][0-9]\|55[0-5]` | _51μs_ | | `toRegexRange(0010, 1000)` | `0{0,2}1[0-9]\|0{0,2}[2-9][0-9]\|0?[1-9][0-9]{2}\|1000` | _31μs_ | | `toRegexRange(1, 50)` | `[1-9]\|[1-4][0-9]\|50` | _24μs_ | | `toRegexRange(1, 55)` | `[1-9]\|[1-4][0-9]\|5[0-5]` | _23μs_ | | `toRegexRange(1, 555)` | `[1-9]\|[1-9][0-9]\|[1-4][0-9]{2}\|5[0-4][0-9]\|55[0-5]` | _30μs_ | | `toRegexRange(1, 5555)` | `[1-9]\|[1-9][0-9]{1,2}\|[1-4][0-9]{3}\|5[0-4][0-9]{2}\|55[0-4][0-9]\|555[0-5]` | _43μs_ | | `toRegexRange(111, 555)` | `11[1-9]\|1[2-9][0-9]\|[2-4][0-9]{2}\|5[0-4][0-9]\|55[0-5]` | _38μs_ | | `toRegexRange(29, 51)` | `29\|[34][0-9]\|5[01]` | _24μs_ | | `toRegexRange(31, 877)` | `3[1-9]\|[4-9][0-9]\|[1-7][0-9]{2}\|8[0-6][0-9]\|87[0-7]` | _32μs_ | | `toRegexRange(5, 5)` | `5` | _8μs_ | | `toRegexRange(5, 6)` | `5\|6` | _11μs_ | | `toRegexRange(1, 2)` | `1\|2` | _6μs_ | | `toRegexRange(1, 5)` | `[1-5]` | _15μs_ | | `toRegexRange(1, 10)` | `[1-9]\|10` | _22μs_ | | `toRegexRange(1, 100)` | `[1-9]\|[1-9][0-9]\|100` | _25μs_ | | `toRegexRange(1, 1000)` | `[1-9]\|[1-9][0-9]{1,2}\|1000` | _31μs_ | | `toRegexRange(1, 10000)` | `[1-9]\|[1-9][0-9]{1,3}\|10000` | _34μs_ | | `toRegexRange(1, 100000)` | `[1-9]\|[1-9][0-9]{1,4}\|100000` | _36μs_ | | `toRegexRange(1, 1000000)` | `[1-9]\|[1-9][0-9]{1,5}\|1000000` | _42μs_ | | `toRegexRange(1, 10000000)` | `[1-9]\|[1-9][0-9]{1,6}\|10000000` | _42μs_ | ## Heads up! **Order of arguments** When the `min` is larger than the `max`, values will be flipped to create a valid range: ```js toRegexRange('51', '29'); ``` Is effectively flipped to: ```js toRegexRange('29', '51'); //=> 29|[3-4][0-9]|5[0-1] ``` **Steps / increments** This library does not support steps (increments). A pr to add support would be welcome. ## History ### v2.0.0 - 2017-04-21 **New features** Adds support for zero-padding! ### v1.0.0 **Optimizations** Repeating ranges are now grouped using quantifiers. rocessing time is roughly the same, but the generated regex is much smaller, which should result in faster matching. ## Attribution Inspired by the python library [range-regex](https://github.com/dimka665/range-regex). ## About <details> <summary><strong>Contributing</strong></summary> Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). </details> <details> <summary><strong>Running Tests</strong></summary> Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` </details> <details> <summary><strong>Building docs</strong></summary> _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` </details> ### Related projects You might also be interested in these projects: * [expand-range](https://www.npmjs.com/package/expand-range): Fast, bash-like range expansion. Expand a range of numbers or letters, uppercase or lowercase. Used… [more](https://github.com/jonschlinkert/expand-range) | [homepage](https://github.com/jonschlinkert/expand-range "Fast, bash-like range expansion. Expand a range of numbers or letters, uppercase or lowercase. Used by micromatch.") * [fill-range](https://www.npmjs.com/package/fill-range): Fill in a range of numbers or letters, optionally passing an increment or `step` to… [more](https://github.com/jonschlinkert/fill-range) | [homepage](https://github.com/jonschlinkert/fill-range "Fill in a range of numbers or letters, optionally passing an increment or `step` to use, or create a regex-compatible range with `options.toRegex`") * [micromatch](https://www.npmjs.com/package/micromatch): Glob matching for javascript/node.js. A drop-in replacement and faster alternative to minimatch and multimatch. | [homepage](https://github.com/micromatch/micromatch "Glob matching for javascript/node.js. A drop-in replacement and faster alternative to minimatch and multimatch.") * [repeat-element](https://www.npmjs.com/package/repeat-element): Create an array by repeating the given value n times. | [homepage](https://github.com/jonschlinkert/repeat-element "Create an array by repeating the given value n times.") * [repeat-string](https://www.npmjs.com/package/repeat-string): Repeat the given string n times. Fastest implementation for repeating a string. | [homepage](https://github.com/jonschlinkert/repeat-string "Repeat the given string n times. Fastest implementation for repeating a string.") ### Contributors | **Commits** | **Contributor** | | --- | --- | | 63 | [jonschlinkert](https://github.com/jonschlinkert) | | 3 | [doowb](https://github.com/doowb) | | 2 | [realityking](https://github.com/realityking) | ### Author **Jon Schlinkert** * [GitHub Profile](https://github.com/jonschlinkert) * [Twitter Profile](https://twitter.com/jonschlinkert) * [LinkedIn Profile](https://linkedin.com/in/jonschlinkert) Please consider supporting me on Patreon, or [start your own Patreon page](https://patreon.com/invite/bxpbvm)! <a href="https://www.patreon.com/jonschlinkert"> <img src="https://c5.patreon.com/external/logo/become_a_patron_button@2x.png" height="50"> </a> ### License Copyright © 2019, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT License](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.8.0, on April 07, 2019._ Railroad-diagram Generator ========================== This is a small js library for generating railroad diagrams (like what [JSON.org](http://json.org) uses) using SVG. Railroad diagrams are a way of visually representing a grammar in a form that is more readable than using regular expressions or BNF. I think (though I haven't given it a lot of thought yet) that if it's easy to write a context-free grammar for the language, the corresponding railroad diagram will be easy as well. There are several railroad-diagram generators out there, but none of them had the visual appeal I wanted. [Here's an example of how they look!](http://www.xanthir.com/etc/railroad-diagrams/example.html) And [here's an online generator for you to play with and get SVG code from!](http://www.xanthir.com/etc/railroad-diagrams/generator.html) The library now exists in a Python port as well! See the information further down. Details ------- To use the library, just include the js and css files, and then call the Diagram() function. Its arguments are the components of the diagram (Diagram is a special form of Sequence). An alternative to Diagram() is ComplexDiagram() which is used to describe a complex type diagram. Components are either leaves or containers. The leaves: * Terminal(text) or a bare string - represents literal text * NonTerminal(text) - represents an instruction or another production * Comment(text) - a comment * Skip() - an empty line The containers: * Sequence(children) - like simple concatenation in a regex * Choice(index, children) - like | in a regex. The index argument specifies which child is the "normal" choice and should go in the middle * Optional(child, skip) - like ? in a regex. A shorthand for `Choice(1, [Skip(), child])`. If the optional `skip` parameter has the value `"skip"`, it instead puts the Skip() in the straight-line path, for when the "normal" behavior is to omit the item. * OneOrMore(child, repeat) - like + in a regex. The 'repeat' argument is optional, and specifies something that must go between the repetitions. * ZeroOrMore(child, repeat, skip) - like * in a regex. A shorthand for `Optional(OneOrMore(child, repeat))`. The optional `skip` parameter is identical to Optional(). For convenience, each component can be called with or without `new`. If called without `new`, the container components become n-ary; that is, you can say either `new Sequence([A, B])` or just `Sequence(A,B)`. After constructing a Diagram, call `.format(...padding)` on it, specifying 0-4 padding values (just like CSS) for some additional "breathing space" around the diagram (the paddings default to 20px). The result can either be `.toString()`'d for the markup, or `.toSVG()`'d for an `<svg>` element, which can then be immediately inserted to the document. As a convenience, Diagram also has an `.addTo(element)` method, which immediately converts it to SVG and appends it to the referenced element with default paddings. `element` defaults to `document.body`. Options ------- There are a few options you can tweak, at the bottom of the file. Just tweak either until the diagram looks like what you want. You can also change the CSS file - feel free to tweak to your heart's content. Note, though, that if you change the text sizes in the CSS, you'll have to go adjust the metrics for the leaf nodes as well. * VERTICAL_SEPARATION - sets the minimum amount of vertical separation between two items. Note that the stroke width isn't counted when computing the separation; this shouldn't be relevant unless you have a very small separation or very large stroke width. * ARC_RADIUS - the radius of the arcs used in the branching containers like Choice. This has a relatively large effect on the size of non-trivial diagrams. Both tight and loose values look good, depending on what you're going for. * DIAGRAM_CLASS - the class set on the root `<svg>` element of each diagram, for use in the CSS stylesheet. * STROKE_ODD_PIXEL_LENGTH - the default stylesheet uses odd pixel lengths for 'stroke'. Due to rasterization artifacts, they look best when the item has been translated half a pixel in both directions. If you change the styling to use a stroke with even pixel lengths, you'll want to set this variable to `false`. * INTERNAL_ALIGNMENT - when some branches of a container are narrower than others, this determines how they're aligned in the extra space. Defaults to "center", but can be set to "left" or "right". Caveats ------- At this early stage, the generator is feature-complete and works as intended, but still has several TODOs: * The font-sizes are hard-coded right now, and the font handling in general is very dumb - I'm just guessing at some metrics that are probably "good enough" rather than measuring things properly. Python Port ----------- In addition to the canonical JS version, the library now exists as a Python library as well. Using it is basically identical. The config variables are globals in the file, and so may be adjusted either manually or via tweaking from inside your program. The main difference from the JS port is how you extract the string from the Diagram. You'll find a `writeSvg(writerFunc)` method on `Diagram`, which takes a callback of one argument and passes it the string form of the diagram. For example, it can be used like `Diagram(...).writeSvg(sys.stdout.write)` to write to stdout. **Note**: the callback will be called multiple times as it builds up the string, not just once with the whole thing. If you need it all at once, consider something like a `StringIO` as an easy way to collect it into a single string. License ------- This document and all associated files in the github project are licensed under [CC0](http://creativecommons.org/publicdomain/zero/1.0/) . This means you can reuse, remix, or otherwise appropriate this project for your own use **without restriction**. (The actual legal meaning can be found at the above link.) Don't ask me for permission to use any part of this project, **just use it**. I would appreciate attribution, but that is not required by the license. semver(1) -- The semantic versioner for npm =========================================== ## Install ```bash npm install semver ```` ## Usage As a node module: ```js const semver = require('semver') semver.valid('1.2.3') // '1.2.3' semver.valid('a.b.c') // null semver.clean(' =v1.2.3 ') // '1.2.3' semver.satisfies('1.2.3', '1.x || >=2.5.0 || 5.0.0 - 7.2.3') // true semver.gt('1.2.3', '9.8.7') // false semver.lt('1.2.3', '9.8.7') // true semver.minVersion('>=1.0.0') // '1.0.0' semver.valid(semver.coerce('v2')) // '2.0.0' semver.valid(semver.coerce('42.6.7.9.3-alpha')) // '42.6.7' ``` You can also just load the module for the function that you care about, if you'd like to minimize your footprint. ```js // load the whole API at once in a single object const semver = require('semver') // or just load the bits you need // all of them listed here, just pick and choose what you want // classes const SemVer = require('semver/classes/semver') const Comparator = require('semver/classes/comparator') const Range = require('semver/classes/range') // functions for working with versions const semverParse = require('semver/functions/parse') const semverValid = require('semver/functions/valid') const semverClean = require('semver/functions/clean') const semverInc = require('semver/functions/inc') const semverDiff = require('semver/functions/diff') const semverMajor = require('semver/functions/major') const semverMinor = require('semver/functions/minor') const semverPatch = require('semver/functions/patch') const semverPrerelease = require('semver/functions/prerelease') const semverCompare = require('semver/functions/compare') const semverRcompare = require('semver/functions/rcompare') const semverCompareLoose = require('semver/functions/compare-loose') const semverCompareBuild = require('semver/functions/compare-build') const semverSort = require('semver/functions/sort') const semverRsort = require('semver/functions/rsort') // low-level comparators between versions const semverGt = require('semver/functions/gt') const semverLt = require('semver/functions/lt') const semverEq = require('semver/functions/eq') const semverNeq = require('semver/functions/neq') const semverGte = require('semver/functions/gte') const semverLte = require('semver/functions/lte') const semverCmp = require('semver/functions/cmp') const semverCoerce = require('semver/functions/coerce') // working with ranges const semverSatisfies = require('semver/functions/satisfies') const semverMaxSatisfying = require('semver/ranges/max-satisfying') const semverMinSatisfying = require('semver/ranges/min-satisfying') const semverToComparators = require('semver/ranges/to-comparators') const semverMinVersion = require('semver/ranges/min-version') const semverValidRange = require('semver/ranges/valid') const semverOutside = require('semver/ranges/outside') const semverGtr = require('semver/ranges/gtr') const semverLtr = require('semver/ranges/ltr') const semverIntersects = require('semver/ranges/intersects') const simplifyRange = require('semver/ranges/simplify') const rangeSubset = require('semver/ranges/subset') ``` As a command-line utility: ``` $ semver -h A JavaScript implementation of the https://semver.org/ specification Copyright Isaac Z. Schlueter Usage: semver [options] <version> [<version> [...]] Prints valid versions sorted by SemVer precedence Options: -r --range <range> Print versions that match the specified range. -i --increment [<level>] Increment a version by the specified level. Level can be one of: major, minor, patch, premajor, preminor, prepatch, or prerelease. Default level is 'patch'. Only one version may be specified. --preid <identifier> Identifier to be used to prefix premajor, preminor, prepatch or prerelease version increments. -l --loose Interpret versions and ranges loosely -p --include-prerelease Always include prerelease versions in range matching -c --coerce Coerce a string into SemVer if possible (does not imply --loose) --rtl Coerce version strings right to left --ltr Coerce version strings left to right (default) Program exits successfully if any valid version satisfies all supplied ranges, and prints all satisfying versions. If no satisfying versions are found, then exits failure. Versions are printed in ascending order, so supplying multiple versions to the utility will just sort them. ``` ## Versions A "version" is described by the `v2.0.0` specification found at <https://semver.org/>. A leading `"="` or `"v"` character is stripped off and ignored. ## Ranges A `version range` is a set of `comparators` which specify versions that satisfy the range. A `comparator` is composed of an `operator` and a `version`. The set of primitive `operators` is: * `<` Less than * `<=` Less than or equal to * `>` Greater than * `>=` Greater than or equal to * `=` Equal. If no operator is specified, then equality is assumed, so this operator is optional, but MAY be included. For example, the comparator `>=1.2.7` would match the versions `1.2.7`, `1.2.8`, `2.5.3`, and `1.3.9`, but not the versions `1.2.6` or `1.1.0`. Comparators can be joined by whitespace to form a `comparator set`, which is satisfied by the **intersection** of all of the comparators it includes. A range is composed of one or more comparator sets, joined by `||`. A version matches a range if and only if every comparator in at least one of the `||`-separated comparator sets is satisfied by the version. For example, the range `>=1.2.7 <1.3.0` would match the versions `1.2.7`, `1.2.8`, and `1.2.99`, but not the versions `1.2.6`, `1.3.0`, or `1.1.0`. The range `1.2.7 || >=1.2.9 <2.0.0` would match the versions `1.2.7`, `1.2.9`, and `1.4.6`, but not the versions `1.2.8` or `2.0.0`. ### Prerelease Tags If a version has a prerelease tag (for example, `1.2.3-alpha.3`) then it will only be allowed to satisfy comparator sets if at least one comparator with the same `[major, minor, patch]` tuple also has a prerelease tag. For example, the range `>1.2.3-alpha.3` would be allowed to match the version `1.2.3-alpha.7`, but it would *not* be satisfied by `3.4.5-alpha.9`, even though `3.4.5-alpha.9` is technically "greater than" `1.2.3-alpha.3` according to the SemVer sort rules. The version range only accepts prerelease tags on the `1.2.3` version. The version `3.4.5` *would* satisfy the range, because it does not have a prerelease flag, and `3.4.5` is greater than `1.2.3-alpha.7`. The purpose for this behavior is twofold. First, prerelease versions frequently are updated very quickly, and contain many breaking changes that are (by the author's design) not yet fit for public consumption. Therefore, by default, they are excluded from range matching semantics. Second, a user who has opted into using a prerelease version has clearly indicated the intent to use *that specific* set of alpha/beta/rc versions. By including a prerelease tag in the range, the user is indicating that they are aware of the risk. However, it is still not appropriate to assume that they have opted into taking a similar risk on the *next* set of prerelease versions. Note that this behavior can be suppressed (treating all prerelease versions as if they were normal versions, for the purpose of range matching) by setting the `includePrerelease` flag on the options object to any [functions](https://github.com/npm/node-semver#functions) that do range matching. #### Prerelease Identifiers The method `.inc` takes an additional `identifier` string argument that will append the value of the string as a prerelease identifier: ```javascript semver.inc('1.2.3', 'prerelease', 'beta') // '1.2.4-beta.0' ``` command-line example: ```bash $ semver 1.2.3 -i prerelease --preid beta 1.2.4-beta.0 ``` Which then can be used to increment further: ```bash $ semver 1.2.4-beta.0 -i prerelease 1.2.4-beta.1 ``` ### Advanced Range Syntax Advanced range syntax desugars to primitive comparators in deterministic ways. Advanced ranges may be combined in the same way as primitive comparators using white space or `||`. #### Hyphen Ranges `X.Y.Z - A.B.C` Specifies an inclusive set. * `1.2.3 - 2.3.4` := `>=1.2.3 <=2.3.4` If a partial version is provided as the first version in the inclusive range, then the missing pieces are replaced with zeroes. * `1.2 - 2.3.4` := `>=1.2.0 <=2.3.4` If a partial version is provided as the second version in the inclusive range, then all versions that start with the supplied parts of the tuple are accepted, but nothing that would be greater than the provided tuple parts. * `1.2.3 - 2.3` := `>=1.2.3 <2.4.0-0` * `1.2.3 - 2` := `>=1.2.3 <3.0.0-0` #### X-Ranges `1.2.x` `1.X` `1.2.*` `*` Any of `X`, `x`, or `*` may be used to "stand in" for one of the numeric values in the `[major, minor, patch]` tuple. * `*` := `>=0.0.0` (Any non-prerelease version satisfies, unless `includePrerelease` is specified, in which case any version at all satisfies) * `1.x` := `>=1.0.0 <2.0.0-0` (Matching major version) * `1.2.x` := `>=1.2.0 <1.3.0-0` (Matching major and minor versions) A partial version range is treated as an X-Range, so the special character is in fact optional. * `""` (empty string) := `*` := `>=0.0.0` * `1` := `1.x.x` := `>=1.0.0 <2.0.0-0` * `1.2` := `1.2.x` := `>=1.2.0 <1.3.0-0` #### Tilde Ranges `~1.2.3` `~1.2` `~1` Allows patch-level changes if a minor version is specified on the comparator. Allows minor-level changes if not. * `~1.2.3` := `>=1.2.3 <1.(2+1).0` := `>=1.2.3 <1.3.0-0` * `~1.2` := `>=1.2.0 <1.(2+1).0` := `>=1.2.0 <1.3.0-0` (Same as `1.2.x`) * `~1` := `>=1.0.0 <(1+1).0.0` := `>=1.0.0 <2.0.0-0` (Same as `1.x`) * `~0.2.3` := `>=0.2.3 <0.(2+1).0` := `>=0.2.3 <0.3.0-0` * `~0.2` := `>=0.2.0 <0.(2+1).0` := `>=0.2.0 <0.3.0-0` (Same as `0.2.x`) * `~0` := `>=0.0.0 <(0+1).0.0` := `>=0.0.0 <1.0.0-0` (Same as `0.x`) * `~1.2.3-beta.2` := `>=1.2.3-beta.2 <1.3.0-0` Note that prereleases in the `1.2.3` version will be allowed, if they are greater than or equal to `beta.2`. So, `1.2.3-beta.4` would be allowed, but `1.2.4-beta.2` would not, because it is a prerelease of a different `[major, minor, patch]` tuple. #### Caret Ranges `^1.2.3` `^0.2.5` `^0.0.4` Allows changes that do not modify the left-most non-zero element in the `[major, minor, patch]` tuple. In other words, this allows patch and minor updates for versions `1.0.0` and above, patch updates for versions `0.X >=0.1.0`, and *no* updates for versions `0.0.X`. Many authors treat a `0.x` version as if the `x` were the major "breaking-change" indicator. Caret ranges are ideal when an author may make breaking changes between `0.2.4` and `0.3.0` releases, which is a common practice. However, it presumes that there will *not* be breaking changes between `0.2.4` and `0.2.5`. It allows for changes that are presumed to be additive (but non-breaking), according to commonly observed practices. * `^1.2.3` := `>=1.2.3 <2.0.0-0` * `^0.2.3` := `>=0.2.3 <0.3.0-0` * `^0.0.3` := `>=0.0.3 <0.0.4-0` * `^1.2.3-beta.2` := `>=1.2.3-beta.2 <2.0.0-0` Note that prereleases in the `1.2.3` version will be allowed, if they are greater than or equal to `beta.2`. So, `1.2.3-beta.4` would be allowed, but `1.2.4-beta.2` would not, because it is a prerelease of a different `[major, minor, patch]` tuple. * `^0.0.3-beta` := `>=0.0.3-beta <0.0.4-0` Note that prereleases in the `0.0.3` version *only* will be allowed, if they are greater than or equal to `beta`. So, `0.0.3-pr.2` would be allowed. When parsing caret ranges, a missing `patch` value desugars to the number `0`, but will allow flexibility within that value, even if the major and minor versions are both `0`. * `^1.2.x` := `>=1.2.0 <2.0.0-0` * `^0.0.x` := `>=0.0.0 <0.1.0-0` * `^0.0` := `>=0.0.0 <0.1.0-0` A missing `minor` and `patch` values will desugar to zero, but also allow flexibility within those values, even if the major version is zero. * `^1.x` := `>=1.0.0 <2.0.0-0` * `^0.x` := `>=0.0.0 <1.0.0-0` ### Range Grammar Putting all this together, here is a Backus-Naur grammar for ranges, for the benefit of parser authors: ```bnf range-set ::= range ( logical-or range ) * logical-or ::= ( ' ' ) * '||' ( ' ' ) * range ::= hyphen | simple ( ' ' simple ) * | '' hyphen ::= partial ' - ' partial simple ::= primitive | partial | tilde | caret primitive ::= ( '<' | '>' | '>=' | '<=' | '=' ) partial partial ::= xr ( '.' xr ( '.' xr qualifier ? )? )? xr ::= 'x' | 'X' | '*' | nr nr ::= '0' | ['1'-'9'] ( ['0'-'9'] ) * tilde ::= '~' partial caret ::= '^' partial qualifier ::= ( '-' pre )? ( '+' build )? pre ::= parts build ::= parts parts ::= part ( '.' part ) * part ::= nr | [-0-9A-Za-z]+ ``` ## Functions All methods and classes take a final `options` object argument. All options in this object are `false` by default. The options supported are: - `loose` Be more forgiving about not-quite-valid semver strings. (Any resulting output will always be 100% strict compliant, of course.) For backwards compatibility reasons, if the `options` argument is a boolean value instead of an object, it is interpreted to be the `loose` param. - `includePrerelease` Set to suppress the [default behavior](https://github.com/npm/node-semver#prerelease-tags) of excluding prerelease tagged versions from ranges unless they are explicitly opted into. Strict-mode Comparators and Ranges will be strict about the SemVer strings that they parse. * `valid(v)`: Return the parsed version, or null if it's not valid. * `inc(v, release)`: Return the version incremented by the release type (`major`, `premajor`, `minor`, `preminor`, `patch`, `prepatch`, or `prerelease`), or null if it's not valid * `premajor` in one call will bump the version up to the next major version and down to a prerelease of that major version. `preminor`, and `prepatch` work the same way. * If called from a non-prerelease version, the `prerelease` will work the same as `prepatch`. It increments the patch version, then makes a prerelease. If the input version is already a prerelease it simply increments it. * `prerelease(v)`: Returns an array of prerelease components, or null if none exist. Example: `prerelease('1.2.3-alpha.1') -> ['alpha', 1]` * `major(v)`: Return the major version number. * `minor(v)`: Return the minor version number. * `patch(v)`: Return the patch version number. * `intersects(r1, r2, loose)`: Return true if the two supplied ranges or comparators intersect. * `parse(v)`: Attempt to parse a string as a semantic version, returning either a `SemVer` object or `null`. ### Comparison * `gt(v1, v2)`: `v1 > v2` * `gte(v1, v2)`: `v1 >= v2` * `lt(v1, v2)`: `v1 < v2` * `lte(v1, v2)`: `v1 <= v2` * `eq(v1, v2)`: `v1 == v2` This is true if they're logically equivalent, even if they're not the exact same string. You already know how to compare strings. * `neq(v1, v2)`: `v1 != v2` The opposite of `eq`. * `cmp(v1, comparator, v2)`: Pass in a comparison string, and it'll call the corresponding function above. `"==="` and `"!=="` do simple string comparison, but are included for completeness. Throws if an invalid comparison string is provided. * `compare(v1, v2)`: Return `0` if `v1 == v2`, or `1` if `v1` is greater, or `-1` if `v2` is greater. Sorts in ascending order if passed to `Array.sort()`. * `rcompare(v1, v2)`: The reverse of compare. Sorts an array of versions in descending order when passed to `Array.sort()`. * `compareBuild(v1, v2)`: The same as `compare` but considers `build` when two versions are equal. Sorts in ascending order if passed to `Array.sort()`. `v2` is greater. Sorts in ascending order if passed to `Array.sort()`. * `diff(v1, v2)`: Returns difference between two versions by the release type (`major`, `premajor`, `minor`, `preminor`, `patch`, `prepatch`, or `prerelease`), or null if the versions are the same. ### Comparators * `intersects(comparator)`: Return true if the comparators intersect ### Ranges * `validRange(range)`: Return the valid range or null if it's not valid * `satisfies(version, range)`: Return true if the version satisfies the range. * `maxSatisfying(versions, range)`: Return the highest version in the list that satisfies the range, or `null` if none of them do. * `minSatisfying(versions, range)`: Return the lowest version in the list that satisfies the range, or `null` if none of them do. * `minVersion(range)`: Return the lowest version that can possibly match the given range. * `gtr(version, range)`: Return `true` if version is greater than all the versions possible in the range. * `ltr(version, range)`: Return `true` if version is less than all the versions possible in the range. * `outside(version, range, hilo)`: Return true if the version is outside the bounds of the range in either the high or low direction. The `hilo` argument must be either the string `'>'` or `'<'`. (This is the function called by `gtr` and `ltr`.) * `intersects(range)`: Return true if any of the ranges comparators intersect * `simplifyRange(versions, range)`: Return a "simplified" range that matches the same items in `versions` list as the range specified. Note that it does *not* guarantee that it would match the same versions in all cases, only for the set of versions provided. This is useful when generating ranges by joining together multiple versions with `||` programmatically, to provide the user with something a bit more ergonomic. If the provided range is shorter in string-length than the generated range, then that is returned. * `subset(subRange, superRange)`: Return `true` if the `subRange` range is entirely contained by the `superRange` range. Note that, since ranges may be non-contiguous, a version might not be greater than a range, less than a range, *or* satisfy a range! For example, the range `1.2 <1.2.9 || >2.0.0` would have a hole from `1.2.9` until `2.0.0`, so the version `1.2.10` would not be greater than the range (because `2.0.1` satisfies, which is higher), nor less than the range (since `1.2.8` satisfies, which is lower), and it also does not satisfy the range. If you want to know if a version satisfies or does not satisfy a range, use the `satisfies(version, range)` function. ### Coercion * `coerce(version, options)`: Coerces a string to semver if possible This aims to provide a very forgiving translation of a non-semver string to semver. It looks for the first digit in a string, and consumes all remaining characters which satisfy at least a partial semver (e.g., `1`, `1.2`, `1.2.3`) up to the max permitted length (256 characters). Longer versions are simply truncated (`4.6.3.9.2-alpha2` becomes `4.6.3`). All surrounding text is simply ignored (`v3.4 replaces v3.3.1` becomes `3.4.0`). Only text which lacks digits will fail coercion (`version one` is not valid). The maximum length for any semver component considered for coercion is 16 characters; longer components will be ignored (`10000000000000000.4.7.4` becomes `4.7.4`). The maximum value for any semver component is `Number.MAX_SAFE_INTEGER || (2**53 - 1)`; higher value components are invalid (`9999999999999999.4.7.4` is likely invalid). If the `options.rtl` flag is set, then `coerce` will return the right-most coercible tuple that does not share an ending index with a longer coercible tuple. For example, `1.2.3.4` will return `2.3.4` in rtl mode, not `4.0.0`. `1.2.3/4` will return `4.0.0`, because the `4` is not a part of any other overlapping SemVer tuple. ### Clean * `clean(version)`: Clean a string to be a valid semver if possible This will return a cleaned and trimmed semver version. If the provided version is not valid a null will be returned. This does not work for ranges. ex. * `s.clean(' = v 2.1.5foo')`: `null` * `s.clean(' = v 2.1.5foo', { loose: true })`: `'2.1.5-foo'` * `s.clean(' = v 2.1.5-foo')`: `null` * `s.clean(' = v 2.1.5-foo', { loose: true })`: `'2.1.5-foo'` * `s.clean('=v2.1.5')`: `'2.1.5'` * `s.clean(' =v2.1.5')`: `2.1.5` * `s.clean(' 2.1.5 ')`: `'2.1.5'` * `s.clean('~1.0.0')`: `null` ## Exported Modules <!-- TODO: Make sure that all of these items are documented (classes aren't, eg), and then pull the module name into the documentation for that specific thing. --> You may pull in just the part of this semver utility that you need, if you are sensitive to packing and tree-shaking concerns. The main `require('semver')` export uses getter functions to lazily load the parts of the API that are used. The following modules are available: * `require('semver')` * `require('semver/classes')` * `require('semver/classes/comparator')` * `require('semver/classes/range')` * `require('semver/classes/semver')` * `require('semver/functions/clean')` * `require('semver/functions/cmp')` * `require('semver/functions/coerce')` * `require('semver/functions/compare')` * `require('semver/functions/compare-build')` * `require('semver/functions/compare-loose')` * `require('semver/functions/diff')` * `require('semver/functions/eq')` * `require('semver/functions/gt')` * `require('semver/functions/gte')` * `require('semver/functions/inc')` * `require('semver/functions/lt')` * `require('semver/functions/lte')` * `require('semver/functions/major')` * `require('semver/functions/minor')` * `require('semver/functions/neq')` * `require('semver/functions/parse')` * `require('semver/functions/patch')` * `require('semver/functions/prerelease')` * `require('semver/functions/rcompare')` * `require('semver/functions/rsort')` * `require('semver/functions/satisfies')` * `require('semver/functions/sort')` * `require('semver/functions/valid')` * `require('semver/ranges/gtr')` * `require('semver/ranges/intersects')` * `require('semver/ranges/ltr')` * `require('semver/ranges/max-satisfying')` * `require('semver/ranges/min-satisfying')` * `require('semver/ranges/min-version')` * `require('semver/ranges/outside')` * `require('semver/ranges/to-comparators')` * `require('semver/ranges/valid')` # cliui [](https://travis-ci.org/yargs/cliui) [](https://coveralls.io/r/yargs/cliui?branch=) [](https://www.npmjs.com/package/cliui) [](https://github.com/conventional-changelog/standard-version) easily create complex multi-column command-line-interfaces. ## Example ```js var ui = require('cliui')() ui.div('Usage: $0 [command] [options]') ui.div({ text: 'Options:', padding: [2, 0, 2, 0] }) ui.div( { text: "-f, --file", width: 20, padding: [0, 4, 0, 4] }, { text: "the file to load." + chalk.green("(if this description is long it wraps).") , width: 20 }, { text: chalk.red("[required]"), align: 'right' } ) console.log(ui.toString()) ``` <img width="500" src="screenshot.png"> ## Layout DSL cliui exposes a simple layout DSL: If you create a single `ui.div`, passing a string rather than an object: * `\n`: characters will be interpreted as new rows. * `\t`: characters will be interpreted as new columns. * `\s`: characters will be interpreted as padding. **as an example...** ```js var ui = require('./')({ width: 60 }) ui.div( 'Usage: node ./bin/foo.js\n' + ' <regex>\t provide a regex\n' + ' <glob>\t provide a glob\t [required]' ) console.log(ui.toString()) ``` **will output:** ```shell Usage: node ./bin/foo.js <regex> provide a regex <glob> provide a glob [required] ``` ## Methods ```js cliui = require('cliui') ``` ### cliui({width: integer}) Specify the maximum width of the UI being generated. If no width is provided, cliui will try to get the current window's width and use it, and if that doesn't work, width will be set to `80`. ### cliui({wrap: boolean}) Enable or disable the wrapping of text in a column. ### cliui.div(column, column, column) Create a row with any number of columns, a column can either be a string, or an object with the following options: * **text:** some text to place in the column. * **width:** the width of a column. * **align:** alignment, `right` or `center`. * **padding:** `[top, right, bottom, left]`. * **border:** should a border be placed around the div? ### cliui.span(column, column, column) Similar to `div`, except the next row will be appended without a new line being created. ### cliui.resetOutput() Resets the UI elements of the current cliui instance, maintaining the values set for `width` and `wrap`. # wrappy Callback wrapping utility ## USAGE ```javascript var wrappy = require("wrappy") // var wrapper = wrappy(wrapperFunction) // make sure a cb is called only once // See also: http://npm.im/once for this specific use case var once = wrappy(function (cb) { var called = false return function () { if (called) return called = true return cb.apply(this, arguments) } }) function printBoo () { console.log('boo') } // has some rando property printBoo.iAmBooPrinter = true var onlyPrintOnce = once(printBoo) onlyPrintOnce() // prints 'boo' onlyPrintOnce() // does nothing // random property is retained! assert.equal(onlyPrintOnce.iAmBooPrinter, true) ``` write-file-atomic ----------------- This is an extension for node's `fs.writeFile` that makes its operation atomic and allows you set ownership (uid/gid of the file). ### var writeFileAtomic = require('write-file-atomic')<br>writeFileAtomic(filename, data, [options], [callback]) * filename **String** * data **String** | **Buffer** * options **Object** | **String** * chown **Object** default, uid & gid of existing file, if any * uid **Number** * gid **Number** * encoding **String** | **Null** default = 'utf8' * fsync **Boolean** default = true * mode **Number** default, from existing file, if any * tmpfileCreated **Function** called when the tmpfile is created * callback **Function** Atomically and asynchronously writes data to a file, replacing the file if it already exists. data can be a string or a buffer. The file is initially named `filename + "." + murmurhex(__filename, process.pid, ++invocations)`. Note that `require('worker_threads').threadId` is used in addition to `process.pid` if running inside of a worker thread. If writeFile completes successfully then, if passed the **chown** option it will change the ownership of the file. Finally it renames the file back to the filename you specified. If it encounters errors at any of these steps it will attempt to unlink the temporary file and then pass the error back to the caller. If multiple writes are concurrently issued to the same file, the write operations are put into a queue and serialized in the order they were called, using Promises. Writes to different files are still executed in parallel. If provided, the **chown** option requires both **uid** and **gid** properties or else you'll get an error. If **chown** is not specified it will default to using the owner of the previous file. To prevent chown from being ran you can also pass `false`, in which case the file will be created with the current user's credentials. If **mode** is not specified, it will default to using the permissions from an existing file, if any. Expicitly setting this to `false` remove this default, resulting in a file created with the system default permissions. If options is a String, it's assumed to be the **encoding** option. The **encoding** option is ignored if **data** is a buffer. It defaults to 'utf8'. If the **fsync** option is **false**, writeFile will skip the final fsync call. If the **tmpfileCreated** option is specified it will be called with the name of the tmpfile when created. Example: ```javascript writeFileAtomic('message.txt', 'Hello Node', {chown:{uid:100,gid:50}}, function (err) { if (err) throw err; console.log('It\'s saved!'); }); ``` This function also supports async/await: ```javascript (async () => { try { await writeFileAtomic('message.txt', 'Hello Node', {chown:{uid:100,gid:50}}); console.log('It\'s saved!'); } catch (err) { console.error(err); process.exit(1); } })(); ``` ### var writeFileAtomicSync = require('write-file-atomic').sync<br>writeFileAtomicSync(filename, data, [options]) The synchronous version of **writeFileAtomic**. # hash-base [](https://www.npmjs.org/package/hash-base) [](https://travis-ci.org/crypto-browserify/hash-base) [](https://david-dm.org/crypto-browserify/hash-base#info=dependencies) [](https://github.com/feross/standard) Abstract base class to inherit from if you want to create streams implementing the same API as node crypto [Hash][1] (for [Cipher][2] / [Decipher][3] check [crypto-browserify/cipher-base][4]). ## Example ```js const HashBase = require('hash-base') const inherits = require('inherits') // our hash function is XOR sum of all bytes function MyHash () { HashBase.call(this, 1) // in bytes this._sum = 0x00 } inherits(MyHash, HashBase) MyHash.prototype._update = function () { for (let i = 0; i < this._block.length; ++i) this._sum ^= this._block[i] } MyHash.prototype._digest = function () { return this._sum } const data = Buffer.from([ 0x00, 0x42, 0x01 ]) const hash = new MyHash().update(data).digest() console.log(hash) // => 67 ``` You also can check [source code](index.js) or [crypto-browserify/md5.js][5] ## LICENSE MIT [1]: https://nodejs.org/api/crypto.html#crypto_class_hash [2]: https://nodejs.org/api/crypto.html#crypto_class_cipher [3]: https://nodejs.org/api/crypto.html#crypto_class_decipher [4]: https://github.com/crypto-browserify/cipher-base [5]: https://github.com/crypto-browserify/md5.js # string_decoder ***Node-core v8.9.4 string_decoder for userland*** [](https://nodei.co/npm/string_decoder/) [](https://nodei.co/npm/string_decoder/) ```bash npm install --save string_decoder ``` ***Node-core string_decoder for userland*** This package is a mirror of the string_decoder implementation in Node-core. Full documentation may be found on the [Node.js website](https://nodejs.org/dist/v8.9.4/docs/api/). As of version 1.0.0 **string_decoder** uses semantic versioning. ## Previous versions Previous version numbers match the versions found in Node core, e.g. 0.10.24 matches Node 0.10.24, likewise 0.11.10 matches Node 0.11.10. ## Update The *build/* directory contains a build script that will scrape the source from the [nodejs/node](https://github.com/nodejs/node) repo given a specific Node version. ## Streams Working Group `string_decoder` is maintained by the Streams Working Group, which oversees the development and maintenance of the Streams API within Node.js. The responsibilities of the Streams Working Group include: * Addressing stream issues on the Node.js issue tracker. * Authoring and editing stream documentation within the Node.js project. * Reviewing changes to stream subclasses within the Node.js project. * Redirecting changes to streams from the Node.js project to this project. * Assisting in the implementation of stream providers within Node.js. * Recommending versions of `readable-stream` to be included in Node.js. * Messaging about the future of streams to give the community advance notice of changes. See [readable-stream](https://github.com/nodejs/readable-stream) for more details. # near-ledger-js A JavaScript library for communication with [Ledger](https://www.ledger.com/) Hardware Wallet. # Example usage ```javascript import { createClient, getSupportedTransport } from "near-ledger-js"; const transport = await getSupportedTransport(); transport.setScrambleKey("NEAR"); transport.on('disconnect', () => {...}); ``` In an onClick handler: ```javascript const client = await createClient(transport); // If no error thrown, ledger is available. NOTE: U2F transport will still get here even if device is not present ``` To see debug logging for `getSupportedTransport()`, import `setDebugLogging()` and call `setDebugLogging(true)` before using the package. # How to run demo project 1. `yarn` to install dependencies 2. `yarn start` to start local server with Parcel 3. Open https://localhost:1234 in your browser 4. Open browser console 5. Try examples shown on the page # License This repository is distributed under the terms of both the MIT license and the Apache License (Version 2.0). See [LICENSE](LICENSE) and [LICENSE-APACHE](LICENSE-APACHE) for details. argparse ======== [](http://travis-ci.org/nodeca/argparse) [](https://www.npmjs.org/package/argparse) CLI arguments parser for node.js. Javascript port of python's [argparse](http://docs.python.org/dev/library/argparse.html) module (original version 3.2). That's a full port, except some very rare options, recorded in issue tracker. **NB. Difference with original.** - Method names changed to camelCase. See [generated docs](http://nodeca.github.com/argparse/). - Use `defaultValue` instead of `default`. - Use `argparse.Const.REMAINDER` instead of `argparse.REMAINDER`, and similarly for constant values `OPTIONAL`, `ZERO_OR_MORE`, and `ONE_OR_MORE` (aliases for `nargs` values `'?'`, `'*'`, `'+'`, respectively), and `SUPPRESS`. Example ======= test.js file: ```javascript #!/usr/bin/env node 'use strict'; var ArgumentParser = require('../lib/argparse').ArgumentParser; var parser = new ArgumentParser({ version: '0.0.1', addHelp:true, description: 'Argparse example' }); parser.addArgument( [ '-f', '--foo' ], { help: 'foo bar' } ); parser.addArgument( [ '-b', '--bar' ], { help: 'bar foo' } ); parser.addArgument( '--baz', { help: 'baz bar' } ); var args = parser.parseArgs(); console.dir(args); ``` Display help: ``` $ ./test.js -h usage: example.js [-h] [-v] [-f FOO] [-b BAR] [--baz BAZ] Argparse example Optional arguments: -h, --help Show this help message and exit. -v, --version Show program's version number and exit. -f FOO, --foo FOO foo bar -b BAR, --bar BAR bar foo --baz BAZ baz bar ``` Parse arguments: ``` $ ./test.js -f=3 --bar=4 --baz 5 { foo: '3', bar: '4', baz: '5' } ``` More [examples](https://github.com/nodeca/argparse/tree/master/examples). ArgumentParser objects ====================== ``` new ArgumentParser({parameters hash}); ``` Creates a new ArgumentParser object. **Supported params:** - ```description``` - Text to display before the argument help. - ```epilog``` - Text to display after the argument help. - ```addHelp``` - Add a -h/–help option to the parser. (default: true) - ```argumentDefault``` - Set the global default value for arguments. (default: null) - ```parents``` - A list of ArgumentParser objects whose arguments should also be included. - ```prefixChars``` - The set of characters that prefix optional arguments. (default: ‘-‘) - ```formatterClass``` - A class for customizing the help output. - ```prog``` - The name of the program (default: `path.basename(process.argv[1])`) - ```usage``` - The string describing the program usage (default: generated) - ```conflictHandler``` - Usually unnecessary, defines strategy for resolving conflicting optionals. **Not supported yet** - ```fromfilePrefixChars``` - The set of characters that prefix files from which additional arguments should be read. Details in [original ArgumentParser guide](http://docs.python.org/dev/library/argparse.html#argumentparser-objects) addArgument() method ==================== ``` ArgumentParser.addArgument(name or flag or [name] or [flags...], {options}) ``` Defines how a single command-line argument should be parsed. - ```name or flag or [name] or [flags...]``` - Either a positional name (e.g., `'foo'`), a single option (e.g., `'-f'` or `'--foo'`), an array of a single positional name (e.g., `['foo']`), or an array of options (e.g., `['-f', '--foo']`). Options: - ```action``` - The basic type of action to be taken when this argument is encountered at the command line. - ```nargs```- The number of command-line arguments that should be consumed. - ```constant``` - A constant value required by some action and nargs selections. - ```defaultValue``` - The value produced if the argument is absent from the command line. - ```type``` - The type to which the command-line argument should be converted. - ```choices``` - A container of the allowable values for the argument. - ```required``` - Whether or not the command-line option may be omitted (optionals only). - ```help``` - A brief description of what the argument does. - ```metavar``` - A name for the argument in usage messages. - ```dest``` - The name of the attribute to be added to the object returned by parseArgs(). Details in [original add_argument guide](http://docs.python.org/dev/library/argparse.html#the-add-argument-method) Action (some details) ================ ArgumentParser objects associate command-line arguments with actions. These actions can do just about anything with the command-line arguments associated with them, though most actions simply add an attribute to the object returned by parseArgs(). The action keyword argument specifies how the command-line arguments should be handled. The supported actions are: - ```store``` - Just stores the argument’s value. This is the default action. - ```storeConst``` - Stores value, specified by the const keyword argument. (Note that the const keyword argument defaults to the rather unhelpful None.) The 'storeConst' action is most commonly used with optional arguments, that specify some sort of flag. - ```storeTrue``` and ```storeFalse``` - Stores values True and False respectively. These are special cases of 'storeConst'. - ```append``` - Stores a list, and appends each argument value to the list. This is useful to allow an option to be specified multiple times. - ```appendConst``` - Stores a list, and appends value, specified by the const keyword argument to the list. (Note, that the const keyword argument defaults is None.) The 'appendConst' action is typically used when multiple arguments need to store constants to the same list. - ```count``` - Counts the number of times a keyword argument occurs. For example, used for increasing verbosity levels. - ```help``` - Prints a complete help message for all the options in the current parser and then exits. By default a help action is automatically added to the parser. See ArgumentParser for details of how the output is created. - ```version``` - Prints version information and exit. Expects a `version=` keyword argument in the addArgument() call. Details in [original action guide](http://docs.python.org/dev/library/argparse.html#action) Sub-commands ============ ArgumentParser.addSubparsers() Many programs split their functionality into a number of sub-commands, for example, the svn program can invoke sub-commands like `svn checkout`, `svn update`, and `svn commit`. Splitting up functionality this way can be a particularly good idea when a program performs several different functions which require different kinds of command-line arguments. `ArgumentParser` supports creation of such sub-commands with `addSubparsers()` method. The `addSubparsers()` method is normally called with no arguments and returns an special action object. This object has a single method `addParser()`, which takes a command name and any `ArgumentParser` constructor arguments, and returns an `ArgumentParser` object that can be modified as usual. Example: sub_commands.js ```javascript #!/usr/bin/env node 'use strict'; var ArgumentParser = require('../lib/argparse').ArgumentParser; var parser = new ArgumentParser({ version: '0.0.1', addHelp:true, description: 'Argparse examples: sub-commands', }); var subparsers = parser.addSubparsers({ title:'subcommands', dest:"subcommand_name" }); var bar = subparsers.addParser('c1', {addHelp:true}); bar.addArgument( [ '-f', '--foo' ], { action: 'store', help: 'foo3 bar3' } ); var bar = subparsers.addParser( 'c2', {aliases:['co'], addHelp:true} ); bar.addArgument( [ '-b', '--bar' ], { action: 'store', type: 'int', help: 'foo3 bar3' } ); var args = parser.parseArgs(); console.dir(args); ``` Details in [original sub-commands guide](http://docs.python.org/dev/library/argparse.html#sub-commands) Contributors ============ - [Eugene Shkuropat](https://github.com/shkuropat) - [Paul Jacobson](https://github.com/hpaulj) [others](https://github.com/nodeca/argparse/graphs/contributors) License ======= Copyright (c) 2012 [Vitaly Puzrin](https://github.com/puzrin). Released under the MIT license. See [LICENSE](https://github.com/nodeca/argparse/blob/master/LICENSE) for details. # readable-stream ***Node.js core streams for userland*** [](https://travis-ci.com/nodejs/readable-stream) [](https://nodei.co/npm/readable-stream/) [](https://nodei.co/npm/readable-stream/) [](https://saucelabs.com/u/readabe-stream) ```bash npm install --save readable-stream ``` This package is a mirror of the streams implementations in Node.js. Full documentation may be found on the [Node.js website](https://nodejs.org/dist/v10.19.0/docs/api/stream.html). If you want to guarantee a stable streams base, regardless of what version of Node you, or the users of your libraries are using, use **readable-stream** *only* and avoid the *"stream"* module in Node-core, for background see [this blogpost](http://r.va.gg/2014/06/why-i-dont-use-nodes-core-stream-module.html). As of version 2.0.0 **readable-stream** uses semantic versioning. ## Version 3.x.x v3.x.x of `readable-stream` is a cut from Node 10. This version supports Node 6, 8, and 10, as well as evergreen browsers, IE 11 and latest Safari. The breaking changes introduced by v3 are composed by the combined breaking changes in [Node v9](https://nodejs.org/en/blog/release/v9.0.0/) and [Node v10](https://nodejs.org/en/blog/release/v10.0.0/), as follows: 1. Error codes: https://github.com/nodejs/node/pull/13310, https://github.com/nodejs/node/pull/13291, https://github.com/nodejs/node/pull/16589, https://github.com/nodejs/node/pull/15042, https://github.com/nodejs/node/pull/15665, https://github.com/nodejs/readable-stream/pull/344 2. 'readable' have precedence over flowing https://github.com/nodejs/node/pull/18994 3. make virtual methods errors consistent https://github.com/nodejs/node/pull/18813 4. updated streams error handling https://github.com/nodejs/node/pull/18438 5. writable.end should return this. https://github.com/nodejs/node/pull/18780 6. readable continues to read when push('') https://github.com/nodejs/node/pull/18211 7. add custom inspect to BufferList https://github.com/nodejs/node/pull/17907 8. always defer 'readable' with nextTick https://github.com/nodejs/node/pull/17979 ## Version 2.x.x v2.x.x of `readable-stream` is a cut of the stream module from Node 8 (there have been no semver-major changes from Node 4 to 8). This version supports all Node.js versions from 0.8, as well as evergreen browsers and IE 10 & 11. ### Big Thanks Cross-browser Testing Platform and Open Source <3 Provided by [Sauce Labs][sauce] # Usage You can swap your `require('stream')` with `require('readable-stream')` without any changes, if you are just using one of the main classes and functions. ```js const { Readable, Writable, Transform, Duplex, pipeline, finished } = require('readable-stream') ```` Note that `require('stream')` will return `Stream`, while `require('readable-stream')` will return `Readable`. We discourage using whatever is exported directly, but rather use one of the properties as shown in the example above. # Streams Working Group `readable-stream` is maintained by the Streams Working Group, which oversees the development and maintenance of the Streams API within Node.js. The responsibilities of the Streams Working Group include: * Addressing stream issues on the Node.js issue tracker. * Authoring and editing stream documentation within the Node.js project. * Reviewing changes to stream subclasses within the Node.js project. * Redirecting changes to streams from the Node.js project to this project. * Assisting in the implementation of stream providers within Node.js. * Recommending versions of `readable-stream` to be included in Node.js. * Messaging about the future of streams to give the community advance notice of changes. <a name="members"></a> ## Team Members * **Calvin Metcalf** ([@calvinmetcalf](https://github.com/calvinmetcalf)) &lt;calvin.metcalf@gmail.com&gt; - Release GPG key: F3EF5F62A87FC27A22E643F714CE4FF5015AA242 * **Mathias Buus** ([@mafintosh](https://github.com/mafintosh)) &lt;mathiasbuus@gmail.com&gt; * **Matteo Collina** ([@mcollina](https://github.com/mcollina)) &lt;matteo.collina@gmail.com&gt; - Release GPG key: 3ABC01543F22DD2239285CDD818674489FBC127E * **Irina Shestak** ([@lrlna](https://github.com/lrlna)) &lt;shestak.irina@gmail.com&gt; * **Yoshua Wyuts** ([@yoshuawuyts](https://github.com/yoshuawuyts)) &lt;yoshuawuyts@gmail.com&gt; [sauce]: https://saucelabs.com <h1 align="center">Enquirer</h1> <p align="center"> <a href="https://npmjs.org/package/enquirer"> <img src="https://img.shields.io/npm/v/enquirer.svg" alt="version"> </a> <a href="https://travis-ci.org/enquirer/enquirer"> <img src="https://img.shields.io/travis/enquirer/enquirer.svg" alt="travis"> </a> <a href="https://npmjs.org/package/enquirer"> <img src="https://img.shields.io/npm/dm/enquirer.svg" alt="downloads"> </a> </p> <br> <br> <p align="center"> <b>Stylish CLI prompts that are user-friendly, intuitive and easy to create.</b><br> <sub>>_ Prompts should be more like conversations than inquisitions▌</sub> </p> <br> <p align="center"> <sub>(Example shows Enquirer's <a href="#survey-prompt">Survey Prompt</a>)</a></sub> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/survey-prompt.gif" alt="Enquirer Survey Prompt" width="750"><br> <sub>The terminal in all examples is <a href="https://hyper.is/">Hyper</a>, theme is <a href="https://github.com/jonschlinkert/hyper-monokai-extended">hyper-monokai-extended</a>.</sub><br><br> <a href="#built-in-prompts"><strong>See more prompt examples</strong></a> </p> <br> <br> Created by [jonschlinkert](https://github.com/jonschlinkert) and [doowb](https://github.com/doowb), Enquirer is fast, easy to use, and lightweight enough for small projects, while also being powerful and customizable enough for the most advanced use cases. * **Fast** - [Loads in ~4ms](#-performance) (that's about _3-4 times faster than a [single frame of a HD movie](http://www.endmemo.com/sconvert/framespersecondframespermillisecond.php) at 60fps_) * **Lightweight** - Only one dependency, the excellent [ansi-colors](https://github.com/doowb/ansi-colors) by [Brian Woodward](https://github.com/doowb). * **Easy to implement** - Uses promises and async/await and sensible defaults to make prompts easy to create and implement. * **Easy to use** - Thrill your users with a better experience! Navigating around input and choices is a breeze. You can even create [quizzes](examples/fun/countdown.js), or [record](examples/fun/record.js) and [playback](examples/fun/play.js) key bindings to aid with tutorials and videos. * **Intuitive** - Keypress combos are available to simplify usage. * **Flexible** - All prompts can be used standalone or chained together. * **Stylish** - Easily override semantic styles and symbols for any part of the prompt. * **Extensible** - Easily create and use custom prompts by extending Enquirer's built-in [prompts](#-prompts). * **Pluggable** - Add advanced features to Enquirer using plugins. * **Validation** - Optionally validate user input with any prompt. * **Well tested** - All prompts are well-tested, and tests are easy to create without having to use brittle, hacky solutions to spy on prompts or "inject" values. * **Examples** - There are numerous [examples](examples) available to help you get started. If you like Enquirer, please consider starring or tweeting about this project to show your support. Thanks! <br> <p align="center"> <b>>_ Ready to start making prompts your users will love? ▌</b><br> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/heartbeat.gif" alt="Enquirer Select Prompt with heartbeat example" width="750"> </p> <br> <br> ## ❯ Getting started Get started with Enquirer, the most powerful and easy-to-use Node.js library for creating interactive CLI prompts. * [Install](#-install) * [Usage](#-usage) * [Enquirer](#-enquirer) * [Prompts](#-prompts) - [Built-in Prompts](#-prompts) - [Custom Prompts](#-custom-prompts) * [Key Bindings](#-key-bindings) * [Options](#-options) * [Release History](#-release-history) * [Performance](#-performance) * [About](#-about) <br> ## ❯ Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install enquirer --save ``` Install with [yarn](https://yarnpkg.com/en/): ```sh $ yarn add enquirer ``` <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/npm-install.gif" alt="Install Enquirer with NPM" width="750"> </p> _(Requires Node.js 8.6 or higher. Please let us know if you need support for an earlier version by creating an [issue](../../issues/new).)_ <br> ## ❯ Usage ### Single prompt The easiest way to get started with enquirer is to pass a [question object](#prompt-options) to the `prompt` method. ```js const { prompt } = require('enquirer'); const response = await prompt({ type: 'input', name: 'username', message: 'What is your username?' }); console.log(response); // { username: 'jonschlinkert' } ``` _(Examples with `await` need to be run inside an `async` function)_ ### Multiple prompts Pass an array of ["question" objects](#prompt-options) to run a series of prompts. ```js const response = await prompt([ { type: 'input', name: 'name', message: 'What is your name?' }, { type: 'input', name: 'username', message: 'What is your username?' } ]); console.log(response); // { name: 'Edward Chan', username: 'edwardmchan' } ``` ### Different ways to run enquirer #### 1. By importing the specific `built-in prompt` ```js const { Confirm } = require('enquirer'); const prompt = new Confirm({ name: 'question', message: 'Did you like enquirer?' }); prompt.run() .then(answer => console.log('Answer:', answer)); ``` #### 2. By passing the options to `prompt` ```js const { prompt } = require('enquirer'); prompt({ type: 'confirm', name: 'question', message: 'Did you like enquirer?' }) .then(answer => console.log('Answer:', answer)); ``` **Jump to**: [Getting Started](#-getting-started) · [Prompts](#-prompts) · [Options](#-options) · [Key Bindings](#-key-bindings) <br> ## ❯ Enquirer **Enquirer is a prompt runner** Add Enquirer to your JavaScript project with following line of code. ```js const Enquirer = require('enquirer'); ``` The main export of this library is the `Enquirer` class, which has methods and features designed to simplify running prompts. ```js const { prompt } = require('enquirer'); const question = [ { type: 'input', name: 'username', message: 'What is your username?' }, { type: 'password', name: 'password', message: 'What is your password?' } ]; let answers = await prompt(question); console.log(answers); ``` **Prompts control how values are rendered and returned** Each individual prompt is a class with special features and functionality for rendering the types of values you want to show users in the terminal, and subsequently returning the types of values you need to use in your application. **How can I customize prompts?** Below in this guide you will find information about creating [custom prompts](#-custom-prompts). For now, we'll focus on how to customize an existing prompt. All of the individual [prompt classes](#built-in-prompts) in this library are exposed as static properties on Enquirer. This allows them to be used directly without using `enquirer.prompt()`. Use this approach if you need to modify a prompt instance, or listen for events on the prompt. **Example** ```js const { Input } = require('enquirer'); const prompt = new Input({ name: 'username', message: 'What is your username?' }); prompt.run() .then(answer => console.log('Username:', answer)) .catch(console.error); ``` ### [Enquirer](index.js#L20) Create an instance of `Enquirer`. **Params** * `options` **{Object}**: (optional) Options to use with all prompts. * `answers` **{Object}**: (optional) Answers object to initialize with. **Example** ```js const Enquirer = require('enquirer'); const enquirer = new Enquirer(); ``` ### [register()](index.js#L42) Register a custom prompt type. **Params** * `type` **{String}** * `fn` **{Function|Prompt}**: `Prompt` class, or a function that returns a `Prompt` class. * `returns` **{Object}**: Returns the Enquirer instance **Example** ```js const Enquirer = require('enquirer'); const enquirer = new Enquirer(); enquirer.register('customType', require('./custom-prompt')); ``` ### [prompt()](index.js#L78) Prompt function that takes a "question" object or array of question objects, and returns an object with responses from the user. **Params** * `questions` **{Array|Object}**: Options objects for one or more prompts to run. * `returns` **{Promise}**: Promise that returns an "answers" object with the user's responses. **Example** ```js const Enquirer = require('enquirer'); const enquirer = new Enquirer(); const response = await enquirer.prompt({ type: 'input', name: 'username', message: 'What is your username?' }); console.log(response); ``` ### [use()](index.js#L160) Use an enquirer plugin. **Params** * `plugin` **{Function}**: Plugin function that takes an instance of Enquirer. * `returns` **{Object}**: Returns the Enquirer instance. **Example** ```js const Enquirer = require('enquirer'); const enquirer = new Enquirer(); const plugin = enquirer => { // do stuff to enquire instance }; enquirer.use(plugin); ``` ### [Enquirer#prompt](index.js#L210) Prompt function that takes a "question" object or array of question objects, and returns an object with responses from the user. **Params** * `questions` **{Array|Object}**: Options objects for one or more prompts to run. * `returns` **{Promise}**: Promise that returns an "answers" object with the user's responses. **Example** ```js const { prompt } = require('enquirer'); const response = await prompt({ type: 'input', name: 'username', message: 'What is your username?' }); console.log(response); ``` <br> ## ❯ Prompts This section is about Enquirer's prompts: what they look like, how they work, how to run them, available options, and how to customize the prompts or create your own prompt concept. **Getting started with Enquirer's prompts** * [Prompt](#prompt) - The base `Prompt` class used by other prompts - [Prompt Options](#prompt-options) * [Built-in prompts](#built-in-prompts) * [Prompt Types](#prompt-types) - The base `Prompt` class used by other prompts * [Custom prompts](#%E2%9D%AF-custom-prompts) - Enquirer 2.0 introduced the concept of prompt "types", with the goal of making custom prompts easier than ever to create and use. ### Prompt The base `Prompt` class is used to create all other prompts. ```js const { Prompt } = require('enquirer'); class MyCustomPrompt extends Prompt {} ``` See the documentation for [creating custom prompts](#-custom-prompts) to learn more about how this works. #### Prompt Options Each prompt takes an options object (aka "question" object), that implements the following interface: ```js { // required type: string | function, name: string | function, message: string | function | async function, // optional skip: boolean | function | async function, initial: string | function | async function, format: function | async function, result: function | async function, validate: function | async function, } ``` Each property of the options object is described below: | **Property** | **Required?** | **Type** | **Description** | | ------------ | ------------- | ------------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `type` | yes | `string\|function` | Enquirer uses this value to determine the type of prompt to run, but it's optional when prompts are run directly. | | `name` | yes | `string\|function` | Used as the key for the answer on the returned values (answers) object. | | `message` | yes | `string\|function` | The message to display when the prompt is rendered in the terminal. | | `skip` | no | `boolean\|function` | If `true` it will not ask that prompt. | | `initial` | no | `string\|function` | The default value to return if the user does not supply a value. | | `format` | no | `function` | Function to format user input in the terminal. | | `result` | no | `function` | Function to format the final submitted value before it's returned. | | `validate` | no | `function` | Function to validate the submitted value before it's returned. This function may return a boolean or a string. If a string is returned it will be used as the validation error message. | **Example usage** ```js const { prompt } = require('enquirer'); const question = { type: 'input', name: 'username', message: 'What is your username?' }; prompt(question) .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` <br> ### Built-in prompts * [AutoComplete Prompt](#autocomplete-prompt) * [BasicAuth Prompt](#basicauth-prompt) * [Confirm Prompt](#confirm-prompt) * [Form Prompt](#form-prompt) * [Input Prompt](#input-prompt) * [Invisible Prompt](#invisible-prompt) * [List Prompt](#list-prompt) * [MultiSelect Prompt](#multiselect-prompt) * [Numeral Prompt](#numeral-prompt) * [Password Prompt](#password-prompt) * [Quiz Prompt](#quiz-prompt) * [Survey Prompt](#survey-prompt) * [Scale Prompt](#scale-prompt) * [Select Prompt](#select-prompt) * [Sort Prompt](#sort-prompt) * [Snippet Prompt](#snippet-prompt) * [Toggle Prompt](#toggle-prompt) ### AutoComplete Prompt Prompt that auto-completes as the user types, and returns the selected value as a string. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/autocomplete-prompt.gif" alt="Enquirer AutoComplete Prompt" width="750"> </p> **Example Usage** ```js const { AutoComplete } = require('enquirer'); const prompt = new AutoComplete({ name: 'flavor', message: 'Pick your favorite flavor', limit: 10, initial: 2, choices: [ 'Almond', 'Apple', 'Banana', 'Blackberry', 'Blueberry', 'Cherry', 'Chocolate', 'Cinnamon', 'Coconut', 'Cranberry', 'Grape', 'Nougat', 'Orange', 'Pear', 'Pineapple', 'Raspberry', 'Strawberry', 'Vanilla', 'Watermelon', 'Wintergreen' ] }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **AutoComplete Options** | Option | Type | Default | Description | | ----------- | ---------- | ------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------ | | `highlight` | `function` | `dim` version of primary style | The color to use when "highlighting" characters in the list that match user input. | | `multiple` | `boolean` | `false` | Allow multiple choices to be selected. | | `suggest` | `function` | Greedy match, returns true if choice message contains input string. | Function that filters choices. Takes user input and a choices array, and returns a list of matching choices. | | `initial` | `number` | 0 | Preselected item in the list of choices. | | `footer` | `function` | None | Function that displays [footer text](https://github.com/enquirer/enquirer/blob/6c2819518a1e2ed284242a99a685655fbaabfa28/examples/autocomplete/option-footer.js#L10) | **Related prompts** * [Select](#select-prompt) * [MultiSelect](#multiselect-prompt) * [Survey](#survey-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### BasicAuth Prompt Prompt that asks for username and password to authenticate the user. The default implementation of `authenticate` function in `BasicAuth` prompt is to compare the username and password with the values supplied while running the prompt. The implementer is expected to override the `authenticate` function with a custom logic such as making an API request to a server to authenticate the username and password entered and expect a token back. <p align="center"> <img src="https://user-images.githubusercontent.com/13731210/61570485-7ffd9c00-aaaa-11e9-857a-d47dc7008284.gif" alt="Enquirer BasicAuth Prompt" width="750"> </p> **Example Usage** ```js const { BasicAuth } = require('enquirer'); const prompt = new BasicAuth({ name: 'password', message: 'Please enter your password', username: 'rajat-sr', password: '123', showPassword: true }); prompt .run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Confirm Prompt Prompt that returns `true` or `false`. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/confirm-prompt.gif" alt="Enquirer Confirm Prompt" width="750"> </p> **Example Usage** ```js const { Confirm } = require('enquirer'); const prompt = new Confirm({ name: 'question', message: 'Want to answer?' }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **Related prompts** * [Input](#input-prompt) * [Numeral](#numeral-prompt) * [Password](#password-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Form Prompt Prompt that allows the user to enter and submit multiple values on a single terminal screen. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/form-prompt.gif" alt="Enquirer Form Prompt" width="750"> </p> **Example Usage** ```js const { Form } = require('enquirer'); const prompt = new Form({ name: 'user', message: 'Please provide the following information:', choices: [ { name: 'firstname', message: 'First Name', initial: 'Jon' }, { name: 'lastname', message: 'Last Name', initial: 'Schlinkert' }, { name: 'username', message: 'GitHub username', initial: 'jonschlinkert' } ] }); prompt.run() .then(value => console.log('Answer:', value)) .catch(console.error); ``` **Related prompts** * [Input](#input-prompt) * [Survey](#survey-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Input Prompt Prompt that takes user input and returns a string. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/input-prompt.gif" alt="Enquirer Input Prompt" width="750"> </p> **Example Usage** ```js const { Input } = require('enquirer'); const prompt = new Input({ message: 'What is your username?', initial: 'jonschlinkert' }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.log); ``` You can use [data-store](https://github.com/jonschlinkert/data-store) to store [input history](https://github.com/enquirer/enquirer/blob/master/examples/input/option-history.js) that the user can cycle through (see [source](https://github.com/enquirer/enquirer/blob/8407dc3579123df5e6e20215078e33bb605b0c37/lib/prompts/input.js)). **Related prompts** * [Confirm](#confirm-prompt) * [Numeral](#numeral-prompt) * [Password](#password-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Invisible Prompt Prompt that takes user input, hides it from the terminal, and returns a string. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/invisible-prompt.gif" alt="Enquirer Invisible Prompt" width="750"> </p> **Example Usage** ```js const { Invisible } = require('enquirer'); const prompt = new Invisible({ name: 'secret', message: 'What is your secret?' }); prompt.run() .then(answer => console.log('Answer:', { secret: answer })) .catch(console.error); ``` **Related prompts** * [Password](#password-prompt) * [Input](#input-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### List Prompt Prompt that returns a list of values, created by splitting the user input. The default split character is `,` with optional trailing whitespace. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/list-prompt.gif" alt="Enquirer List Prompt" width="750"> </p> **Example Usage** ```js const { List } = require('enquirer'); const prompt = new List({ name: 'keywords', message: 'Type comma-separated keywords' }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **Related prompts** * [Sort](#sort-prompt) * [Select](#select-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### MultiSelect Prompt Prompt that allows the user to select multiple items from a list of options. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/multiselect-prompt.gif" alt="Enquirer MultiSelect Prompt" width="750"> </p> **Example Usage** ```js const { MultiSelect } = require('enquirer'); const prompt = new MultiSelect({ name: 'value', message: 'Pick your favorite colors', limit: 7, choices: [ { name: 'aqua', value: '#00ffff' }, { name: 'black', value: '#000000' }, { name: 'blue', value: '#0000ff' }, { name: 'fuchsia', value: '#ff00ff' }, { name: 'gray', value: '#808080' }, { name: 'green', value: '#008000' }, { name: 'lime', value: '#00ff00' }, { name: 'maroon', value: '#800000' }, { name: 'navy', value: '#000080' }, { name: 'olive', value: '#808000' }, { name: 'purple', value: '#800080' }, { name: 'red', value: '#ff0000' }, { name: 'silver', value: '#c0c0c0' }, { name: 'teal', value: '#008080' }, { name: 'white', value: '#ffffff' }, { name: 'yellow', value: '#ffff00' } ] }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); // Answer: ['aqua', 'blue', 'fuchsia'] ``` **Example key-value pairs** Optionally, pass a `result` function and use the `.map` method to return an object of key-value pairs of the selected names and values: [example](./examples/multiselect/option-result.js) ```js const { MultiSelect } = require('enquirer'); const prompt = new MultiSelect({ name: 'value', message: 'Pick your favorite colors', limit: 7, choices: [ { name: 'aqua', value: '#00ffff' }, { name: 'black', value: '#000000' }, { name: 'blue', value: '#0000ff' }, { name: 'fuchsia', value: '#ff00ff' }, { name: 'gray', value: '#808080' }, { name: 'green', value: '#008000' }, { name: 'lime', value: '#00ff00' }, { name: 'maroon', value: '#800000' }, { name: 'navy', value: '#000080' }, { name: 'olive', value: '#808000' }, { name: 'purple', value: '#800080' }, { name: 'red', value: '#ff0000' }, { name: 'silver', value: '#c0c0c0' }, { name: 'teal', value: '#008080' }, { name: 'white', value: '#ffffff' }, { name: 'yellow', value: '#ffff00' } ], result(names) { return this.map(names); } }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); // Answer: { aqua: '#00ffff', blue: '#0000ff', fuchsia: '#ff00ff' } ``` **Related prompts** * [AutoComplete](#autocomplete-prompt) * [Select](#select-prompt) * [Survey](#survey-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Numeral Prompt Prompt that takes a number as input. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/numeral-prompt.gif" alt="Enquirer Numeral Prompt" width="750"> </p> **Example Usage** ```js const { NumberPrompt } = require('enquirer'); const prompt = new NumberPrompt({ name: 'number', message: 'Please enter a number' }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **Related prompts** * [Input](#input-prompt) * [Confirm](#confirm-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Password Prompt Prompt that takes user input and masks it in the terminal. Also see the [invisible prompt](#invisible-prompt) <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/password-prompt.gif" alt="Enquirer Password Prompt" width="750"> </p> **Example Usage** ```js const { Password } = require('enquirer'); const prompt = new Password({ name: 'password', message: 'What is your password?' }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **Related prompts** * [Input](#input-prompt) * [Invisible](#invisible-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Quiz Prompt Prompt that allows the user to play multiple-choice quiz questions. <p align="center"> <img src="https://user-images.githubusercontent.com/13731210/61567561-891d4780-aa6f-11e9-9b09-3d504abd24ed.gif" alt="Enquirer Quiz Prompt" width="750"> </p> **Example Usage** ```js const { Quiz } = require('enquirer'); const prompt = new Quiz({ name: 'countries', message: 'How many countries are there in the world?', choices: ['165', '175', '185', '195', '205'], correctChoice: 3 }); prompt .run() .then(answer => { if (answer.correct) { console.log('Correct!'); } else { console.log(`Wrong! Correct answer is ${answer.correctAnswer}`); } }) .catch(console.error); ``` **Quiz Options** | Option | Type | Required | Description | | ----------- | ---------- | ---------- | ------------------------------------------------------------------------------------------------------------ | | `choices` | `array` | Yes | The list of possible answers to the quiz question. | | `correctChoice`| `number` | Yes | Index of the correct choice from the `choices` array. | **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Survey Prompt Prompt that allows the user to provide feedback for a list of questions. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/survey-prompt.gif" alt="Enquirer Survey Prompt" width="750"> </p> **Example Usage** ```js const { Survey } = require('enquirer'); const prompt = new Survey({ name: 'experience', message: 'Please rate your experience', scale: [ { name: '1', message: 'Strongly Disagree' }, { name: '2', message: 'Disagree' }, { name: '3', message: 'Neutral' }, { name: '4', message: 'Agree' }, { name: '5', message: 'Strongly Agree' } ], margin: [0, 0, 2, 1], choices: [ { name: 'interface', message: 'The website has a friendly interface.' }, { name: 'navigation', message: 'The website is easy to navigate.' }, { name: 'images', message: 'The website usually has good images.' }, { name: 'upload', message: 'The website makes it easy to upload images.' }, { name: 'colors', message: 'The website has a pleasing color palette.' } ] }); prompt.run() .then(value => console.log('ANSWERS:', value)) .catch(console.error); ``` **Related prompts** * [Scale](#scale-prompt) * [Snippet](#snippet-prompt) * [Select](#select-prompt) *** ### Scale Prompt A more compact version of the [Survey prompt](#survey-prompt), the Scale prompt allows the user to quickly provide feedback using a [Likert Scale](https://en.wikipedia.org/wiki/Likert_scale). <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/scale-prompt.gif" alt="Enquirer Scale Prompt" width="750"> </p> **Example Usage** ```js const { Scale } = require('enquirer'); const prompt = new Scale({ name: 'experience', message: 'Please rate your experience', scale: [ { name: '1', message: 'Strongly Disagree' }, { name: '2', message: 'Disagree' }, { name: '3', message: 'Neutral' }, { name: '4', message: 'Agree' }, { name: '5', message: 'Strongly Agree' } ], margin: [0, 0, 2, 1], choices: [ { name: 'interface', message: 'The website has a friendly interface.', initial: 2 }, { name: 'navigation', message: 'The website is easy to navigate.', initial: 2 }, { name: 'images', message: 'The website usually has good images.', initial: 2 }, { name: 'upload', message: 'The website makes it easy to upload images.', initial: 2 }, { name: 'colors', message: 'The website has a pleasing color palette.', initial: 2 } ] }); prompt.run() .then(value => console.log('ANSWERS:', value)) .catch(console.error); ``` **Related prompts** * [AutoComplete](#autocomplete-prompt) * [Select](#select-prompt) * [Survey](#survey-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Select Prompt Prompt that allows the user to select from a list of options. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/select-prompt.gif" alt="Enquirer Select Prompt" width="750"> </p> **Example Usage** ```js const { Select } = require('enquirer'); const prompt = new Select({ name: 'color', message: 'Pick a flavor', choices: ['apple', 'grape', 'watermelon', 'cherry', 'orange'] }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **Related prompts** * [AutoComplete](#autocomplete-prompt) * [MultiSelect](#multiselect-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Sort Prompt Prompt that allows the user to sort items in a list. **Example** In this [example](https://github.com/enquirer/enquirer/raw/master/examples/sort/prompt.js), custom styling is applied to the returned values to make it easier to see what's happening. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/sort-prompt.gif" alt="Enquirer Sort Prompt" width="750"> </p> **Example Usage** ```js const colors = require('ansi-colors'); const { Sort } = require('enquirer'); const prompt = new Sort({ name: 'colors', message: 'Sort the colors in order of preference', hint: 'Top is best, bottom is worst', numbered: true, choices: ['red', 'white', 'green', 'cyan', 'yellow'].map(n => ({ name: n, message: colors[n](n) })) }); prompt.run() .then(function(answer = []) { console.log(answer); console.log('Your preferred order of colors is:'); console.log(answer.map(key => colors[key](key)).join('\n')); }) .catch(console.error); ``` **Related prompts** * [List](#list-prompt) * [Select](#select-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Snippet Prompt Prompt that allows the user to replace placeholders in a snippet of code or text. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/snippet-prompt.gif" alt="Prompts" width="750"> </p> **Example Usage** ```js const semver = require('semver'); const { Snippet } = require('enquirer'); const prompt = new Snippet({ name: 'username', message: 'Fill out the fields in package.json', required: true, fields: [ { name: 'author_name', message: 'Author Name' }, { name: 'version', validate(value, state, item, index) { if (item && item.name === 'version' && !semver.valid(value)) { return prompt.styles.danger('version should be a valid semver value'); } return true; } } ], template: `{ "name": "\${name}", "description": "\${description}", "version": "\${version}", "homepage": "https://github.com/\${username}/\${name}", "author": "\${author_name} (https://github.com/\${username})", "repository": "\${username}/\${name}", "license": "\${license:ISC}" } ` }); prompt.run() .then(answer => console.log('Answer:', answer.result)) .catch(console.error); ``` **Related prompts** * [Survey](#survey-prompt) * [AutoComplete](#autocomplete-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Toggle Prompt Prompt that allows the user to toggle between two values then returns `true` or `false`. <p align="center"> <img src="https://raw.githubusercontent.com/enquirer/enquirer/master/media/toggle-prompt.gif" alt="Enquirer Toggle Prompt" width="750"> </p> **Example Usage** ```js const { Toggle } = require('enquirer'); const prompt = new Toggle({ message: 'Want to answer?', enabled: 'Yep', disabled: 'Nope' }); prompt.run() .then(answer => console.log('Answer:', answer)) .catch(console.error); ``` **Related prompts** * [Confirm](#confirm-prompt) * [Input](#input-prompt) * [Sort](#sort-prompt) **↑ back to:** [Getting Started](#-getting-started) · [Prompts](#-prompts) *** ### Prompt Types There are 5 (soon to be 6!) type classes: * [ArrayPrompt](#arrayprompt) - [Options](#options) - [Properties](#properties) - [Methods](#methods) - [Choices](#choices) - [Defining choices](#defining-choices) - [Choice properties](#choice-properties) - [Related prompts](#related-prompts) * [AuthPrompt](#authprompt) * [BooleanPrompt](#booleanprompt) * DatePrompt (Coming Soon!) * [NumberPrompt](#numberprompt) * [StringPrompt](#stringprompt) Each type is a low-level class that may be used as a starting point for creating higher level prompts. Continue reading to learn how. ### ArrayPrompt The `ArrayPrompt` class is used for creating prompts that display a list of choices in the terminal. For example, Enquirer uses this class as the basis for the [Select](#select) and [Survey](#survey) prompts. #### Options In addition to the [options](#options) available to all prompts, Array prompts also support the following options. | **Option** | **Required?** | **Type** | **Description** | | ----------- | ------------- | --------------- | ----------------------------------------------------------------------------------------------------------------------- | | `autofocus` | `no` | `string\|number` | The index or name of the choice that should have focus when the prompt loads. Only one choice may have focus at a time. | | | `stdin` | `no` | `stream` | The input stream to use for emitting keypress events. Defaults to `process.stdin`. | | `stdout` | `no` | `stream` | The output stream to use for writing the prompt to the terminal. Defaults to `process.stdout`. | | | #### Properties Array prompts have the following instance properties and getters. | **Property name** | **Type** | **Description** | | ----------------- | --------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `choices` | `array` | Array of choices that have been normalized from choices passed on the prompt options. | | `cursor` | `number` | Position of the cursor relative to the _user input (string)_. | | `enabled` | `array` | Returns an array of enabled choices. | | `focused` | `array` | Returns the currently selected choice in the visible list of choices. This is similar to the concept of focus in HTML and CSS. Focused choices are always visible (on-screen). When a list of choices is longer than the list of visible choices, and an off-screen choice is _focused_, the list will scroll to the focused choice and re-render. | | `focused` | Gets the currently selected choice. Equivalent to `prompt.choices[prompt.index]`. | | `index` | `number` | Position of the pointer in the _visible list (array) of choices_. | | `limit` | `number` | The number of choices to display on-screen. | | `selected` | `array` | Either a list of enabled choices (when `options.multiple` is true) or the currently focused choice. | | `visible` | `string` | | #### Methods | **Method** | **Description** | | ------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `pointer()` | Returns the visual symbol to use to identify the choice that currently has focus. The `❯` symbol is often used for this. The pointer is not always visible, as with the `autocomplete` prompt. | | `indicator()` | Returns the visual symbol that indicates whether or not a choice is checked/enabled. | | `focus()` | Sets focus on a choice, if it can be focused. | #### Choices Array prompts support the `choices` option, which is the array of choices users will be able to select from when rendered in the terminal. **Type**: `string|object` **Example** ```js const { prompt } = require('enquirer'); const questions = [{ type: 'select', name: 'color', message: 'Favorite color?', initial: 1, choices: [ { name: 'red', message: 'Red', value: '#ff0000' }, //<= choice object { name: 'green', message: 'Green', value: '#00ff00' }, //<= choice object { name: 'blue', message: 'Blue', value: '#0000ff' } //<= choice object ] }]; let answers = await prompt(questions); console.log('Answer:', answers.color); ``` #### Defining choices Whether defined as a string or object, choices are normalized to the following interface: ```js { name: string; message: string | undefined; value: string | undefined; hint: string | undefined; disabled: boolean | string | undefined; } ``` **Example** ```js const question = { name: 'fruit', message: 'Favorite fruit?', choices: ['Apple', 'Orange', 'Raspberry'] }; ``` Normalizes to the following when the prompt is run: ```js const question = { name: 'fruit', message: 'Favorite fruit?', choices: [ { name: 'Apple', message: 'Apple', value: 'Apple' }, { name: 'Orange', message: 'Orange', value: 'Orange' }, { name: 'Raspberry', message: 'Raspberry', value: 'Raspberry' } ] }; ``` #### Choice properties The following properties are supported on `choice` objects. | **Option** | **Type** | **Description** | | ----------- | ----------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `name` | `string` | The unique key to identify a choice | | `message` | `string` | The message to display in the terminal. `name` is used when this is undefined. | | `value` | `string` | Value to associate with the choice. Useful for creating key-value pairs from user choices. `name` is used when this is undefined. | | `choices` | `array` | Array of "child" choices. | | `hint` | `string` | Help message to display next to a choice. | | `role` | `string` | Determines how the choice will be displayed. Currently the only role supported is `separator`. Additional roles may be added in the future (like `heading`, etc). Please create a [feature request] | | `enabled` | `boolean` | Enabled a choice by default. This is only supported when `options.multiple` is true or on prompts that support multiple choices, like [MultiSelect](#-multiselect). | | `disabled` | `boolean\|string` | Disable a choice so that it cannot be selected. This value may either be `true`, `false`, or a message to display. | | `indicator` | `string\|function` | Custom indicator to render for a choice (like a check or radio button). | #### Related prompts * [AutoComplete](#autocomplete-prompt) * [Form](#form-prompt) * [MultiSelect](#multiselect-prompt) * [Select](#select-prompt) * [Survey](#survey-prompt) *** ### AuthPrompt The `AuthPrompt` is used to create prompts to log in user using any authentication method. For example, Enquirer uses this class as the basis for the [BasicAuth Prompt](#basicauth-prompt). You can also find prompt examples in `examples/auth/` folder that utilizes `AuthPrompt` to create OAuth based authentication prompt or a prompt that authenticates using time-based OTP, among others. `AuthPrompt` has a factory function that creates an instance of `AuthPrompt` class and it expects an `authenticate` function, as an argument, which overrides the `authenticate` function of the `AuthPrompt` class. #### Methods | **Method** | **Description** | | ------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `authenticate()` | Contain all the authentication logic. This function should be overridden to implement custom authentication logic. The default `authenticate` function throws an error if no other function is provided. | #### Choices Auth prompt supports the `choices` option, which is the similar to the choices used in [Form Prompt](#form-prompt). **Example** ```js const { AuthPrompt } = require('enquirer'); function authenticate(value, state) { if (value.username === this.options.username && value.password === this.options.password) { return true; } return false; } const CustomAuthPrompt = AuthPrompt.create(authenticate); const prompt = new CustomAuthPrompt({ name: 'password', message: 'Please enter your password', username: 'rajat-sr', password: '1234567', choices: [ { name: 'username', message: 'username' }, { name: 'password', message: 'password' } ] }); prompt .run() .then(answer => console.log('Authenticated?', answer)) .catch(console.error); ``` #### Related prompts * [BasicAuth Prompt](#basicauth-prompt) *** ### BooleanPrompt The `BooleanPrompt` class is used for creating prompts that display and return a boolean value. ```js const { BooleanPrompt } = require('enquirer'); const prompt = new BooleanPrompt({ header: '========================', message: 'Do you love enquirer?', footer: '========================', }); prompt.run() .then(answer => console.log('Selected:', answer)) .catch(console.error); ``` **Returns**: `boolean` *** ### NumberPrompt The `NumberPrompt` class is used for creating prompts that display and return a numerical value. ```js const { NumberPrompt } = require('enquirer'); const prompt = new NumberPrompt({ header: '************************', message: 'Input the Numbers:', footer: '************************', }); prompt.run() .then(answer => console.log('Numbers are:', answer)) .catch(console.error); ``` **Returns**: `string|number` (number, or number formatted as a string) *** ### StringPrompt The `StringPrompt` class is used for creating prompts that display and return a string value. ```js const { StringPrompt } = require('enquirer'); const prompt = new StringPrompt({ header: '************************', message: 'Input the String:', footer: '************************' }); prompt.run() .then(answer => console.log('String is:', answer)) .catch(console.error); ``` **Returns**: `string` <br> ## ❯ Custom prompts With Enquirer 2.0, custom prompts are easier than ever to create and use. **How do I create a custom prompt?** Custom prompts are created by extending either: * Enquirer's `Prompt` class * one of the built-in [prompts](#-prompts), or * low-level [types](#-types). <!-- Example: HaiKarate Custom Prompt --> ```js const { Prompt } = require('enquirer'); class HaiKarate extends Prompt { constructor(options = {}) { super(options); this.value = options.initial || 0; this.cursorHide(); } up() { this.value++; this.render(); } down() { this.value--; this.render(); } render() { this.clear(); // clear previously rendered prompt from the terminal this.write(`${this.state.message}: ${this.value}`); } } // Use the prompt by creating an instance of your custom prompt class. const prompt = new HaiKarate({ message: 'How many sprays do you want?', initial: 10 }); prompt.run() .then(answer => console.log('Sprays:', answer)) .catch(console.error); ``` If you want to be able to specify your prompt by `type` so that it may be used alongside other prompts, you will need to first create an instance of `Enquirer`. ```js const Enquirer = require('enquirer'); const enquirer = new Enquirer(); ``` Then use the `.register()` method to add your custom prompt. ```js enquirer.register('haikarate', HaiKarate); ``` Now you can do the following when defining "questions". ```js let spritzer = require('cologne-drone'); let answers = await enquirer.prompt([ { type: 'haikarate', name: 'cologne', message: 'How many sprays do you need?', initial: 10, async onSubmit(name, value) { await spritzer.activate(value); //<= activate drone return value; } } ]); ``` <br> ## ❯ Key Bindings ### All prompts These key combinations may be used with all prompts. | **command** | **description** | | -------------------------------- | -------------------------------------- | | <kbd>ctrl</kbd> + <kbd>c</kbd> | Cancel the prompt. | | <kbd>ctrl</kbd> + <kbd>g</kbd> | Reset the prompt to its initial state. | <br> ### Move cursor These combinations may be used on prompts that support user input (eg. [input prompt](#input-prompt), [password prompt](#password-prompt), and [invisible prompt](#invisible-prompt)). | **command** | **description** | | ------------------------------ | ---------------------------------------- | | <kbd>left</kbd> | Move the cursor back one character. | | <kbd>right</kbd> | Move the cursor forward one character. | | <kbd>ctrl</kbd> + <kbd>a</kbd> | Move cursor to the start of the line | | <kbd>ctrl</kbd> + <kbd>e</kbd> | Move cursor to the end of the line | | <kbd>ctrl</kbd> + <kbd>b</kbd> | Move cursor back one character | | <kbd>ctrl</kbd> + <kbd>f</kbd> | Move cursor forward one character | | <kbd>ctrl</kbd> + <kbd>x</kbd> | Toggle between first and cursor position | <br> ### Edit Input These key combinations may be used on prompts that support user input (eg. [input prompt](#input-prompt), [password prompt](#password-prompt), and [invisible prompt](#invisible-prompt)). | **command** | **description** | | ------------------------------ | ---------------------------------------- | | <kbd>ctrl</kbd> + <kbd>a</kbd> | Move cursor to the start of the line | | <kbd>ctrl</kbd> + <kbd>e</kbd> | Move cursor to the end of the line | | <kbd>ctrl</kbd> + <kbd>b</kbd> | Move cursor back one character | | <kbd>ctrl</kbd> + <kbd>f</kbd> | Move cursor forward one character | | <kbd>ctrl</kbd> + <kbd>x</kbd> | Toggle between first and cursor position | <br> | **command (Mac)** | **command (Windows)** | **description** | | ----------------------------------- | -------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------- | | <kbd>delete</kbd> | <kbd>backspace</kbd> | Delete one character to the left. | | <kbd>fn</kbd> + <kbd>delete</kbd> | <kbd>delete</kbd> | Delete one character to the right. | | <kbd>option</kbd> + <kbd>up</kbd> | <kbd>alt</kbd> + <kbd>up</kbd> | Scroll to the previous item in history ([Input prompt](#input-prompt) only, when [history is enabled](examples/input/option-history.js)). | | <kbd>option</kbd> + <kbd>down</kbd> | <kbd>alt</kbd> + <kbd>down</kbd> | Scroll to the next item in history ([Input prompt](#input-prompt) only, when [history is enabled](examples/input/option-history.js)). | ### Select choices These key combinations may be used on prompts that support _multiple_ choices, such as the [multiselect prompt](#multiselect-prompt), or the [select prompt](#select-prompt) when the `multiple` options is true. | **command** | **description** | | ----------------- | -------------------------------------------------------------------------------------------------------------------- | | <kbd>space</kbd> | Toggle the currently selected choice when `options.multiple` is true. | | <kbd>number</kbd> | Move the pointer to the choice at the given index. Also toggles the selected choice when `options.multiple` is true. | | <kbd>a</kbd> | Toggle all choices to be enabled or disabled. | | <kbd>i</kbd> | Invert the current selection of choices. | | <kbd>g</kbd> | Toggle the current choice group. | <br> ### Hide/show choices | **command** | **description** | | ------------------------------- | ---------------------------------------------- | | <kbd>fn</kbd> + <kbd>up</kbd> | Decrease the number of visible choices by one. | | <kbd>fn</kbd> + <kbd>down</kbd> | Increase the number of visible choices by one. | <br> ### Move/lock Pointer | **command** | **description** | | ---------------------------------- | -------------------------------------------------------------------------------------------------------------------- | | <kbd>number</kbd> | Move the pointer to the choice at the given index. Also toggles the selected choice when `options.multiple` is true. | | <kbd>up</kbd> | Move the pointer up. | | <kbd>down</kbd> | Move the pointer down. | | <kbd>ctrl</kbd> + <kbd>a</kbd> | Move the pointer to the first _visible_ choice. | | <kbd>ctrl</kbd> + <kbd>e</kbd> | Move the pointer to the last _visible_ choice. | | <kbd>shift</kbd> + <kbd>up</kbd> | Scroll up one choice without changing pointer position (locks the pointer while scrolling). | | <kbd>shift</kbd> + <kbd>down</kbd> | Scroll down one choice without changing pointer position (locks the pointer while scrolling). | <br> | **command (Mac)** | **command (Windows)** | **description** | | -------------------------------- | --------------------- | ---------------------------------------------------------- | | <kbd>fn</kbd> + <kbd>left</kbd> | <kbd>home</kbd> | Move the pointer to the first choice in the choices array. | | <kbd>fn</kbd> + <kbd>right</kbd> | <kbd>end</kbd> | Move the pointer to the last choice in the choices array. | <br> ## ❯ Release History Please see [CHANGELOG.md](CHANGELOG.md). ## ❯ Performance ### System specs MacBook Pro, Intel Core i7, 2.5 GHz, 16 GB. ### Load time Time it takes for the module to load the first time (average of 3 runs): ``` enquirer: 4.013ms inquirer: 286.717ms ``` <br> ## ❯ About <details> <summary><strong>Contributing</strong></summary> Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). ### Todo We're currently working on documentation for the following items. Please star and watch the repository for updates! * [ ] Customizing symbols * [ ] Customizing styles (palette) * [ ] Customizing rendered input * [ ] Customizing returned values * [ ] Customizing key bindings * [ ] Question validation * [ ] Choice validation * [ ] Skipping questions * [ ] Async choices * [ ] Async timers: loaders, spinners and other animations * [ ] Links to examples </details> <details> <summary><strong>Running Tests</strong></summary> Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` ```sh $ yarn && yarn test ``` </details> <details> <summary><strong>Building docs</strong></summary> _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` </details> #### Contributors | **Commits** | **Contributor** | | --- | --- | | 283 | [jonschlinkert](https://github.com/jonschlinkert) | | 82 | [doowb](https://github.com/doowb) | | 32 | [rajat-sr](https://github.com/rajat-sr) | | 20 | [318097](https://github.com/318097) | | 15 | [g-plane](https://github.com/g-plane) | | 12 | [pixelass](https://github.com/pixelass) | | 5 | [adityavyas611](https://github.com/adityavyas611) | | 5 | [satotake](https://github.com/satotake) | | 3 | [tunnckoCore](https://github.com/tunnckoCore) | | 3 | [Ovyerus](https://github.com/Ovyerus) | | 3 | [sw-yx](https://github.com/sw-yx) | | 2 | [DanielRuf](https://github.com/DanielRuf) | | 2 | [GabeL7r](https://github.com/GabeL7r) | | 1 | [AlCalzone](https://github.com/AlCalzone) | | 1 | [hipstersmoothie](https://github.com/hipstersmoothie) | | 1 | [danieldelcore](https://github.com/danieldelcore) | | 1 | [ImgBotApp](https://github.com/ImgBotApp) | | 1 | [jsonkao](https://github.com/jsonkao) | | 1 | [knpwrs](https://github.com/knpwrs) | | 1 | [yeskunall](https://github.com/yeskunall) | | 1 | [mischah](https://github.com/mischah) | | 1 | [renarsvilnis](https://github.com/renarsvilnis) | | 1 | [sbugert](https://github.com/sbugert) | | 1 | [stephencweiss](https://github.com/stephencweiss) | | 1 | [skellock](https://github.com/skellock) | | 1 | [whxaxes](https://github.com/whxaxes) | #### Author **Jon Schlinkert** * [GitHub Profile](https://github.com/jonschlinkert) * [Twitter Profile](https://twitter.com/jonschlinkert) * [LinkedIn Profile](https://linkedin.com/in/jonschlinkert) #### Credit Thanks to [derhuerst](https://github.com/derhuerst), creator of prompt libraries such as [prompt-skeleton](https://github.com/derhuerst/prompt-skeleton), which influenced some of the concepts we used in our prompts. #### License Copyright © 2018-present, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT License](LICENSE). # minizlib A fast zlib stream built on [minipass](http://npm.im/minipass) and Node.js's zlib binding. This module was created to serve the needs of [node-tar](http://npm.im/tar) and [minipass-fetch](http://npm.im/minipass-fetch). Brotli is supported in versions of node with a Brotli binding. ## How does this differ from the streams in `require('zlib')`? First, there are no convenience methods to compress or decompress a buffer. If you want those, use the built-in `zlib` module. This is only streams. That being said, Minipass streams to make it fairly easy to use as one-liners: `new zlib.Deflate().end(data).read()` will return the deflate compressed result. This module compresses and decompresses the data as fast as you feed it in. It is synchronous, and runs on the main process thread. Zlib and Brotli operations can be high CPU, but they're very fast, and doing it this way means much less bookkeeping and artificial deferral. Node's built in zlib streams are built on top of `stream.Transform`. They do the maximally safe thing with respect to consistent asynchrony, buffering, and backpressure. See [Minipass](http://npm.im/minipass) for more on the differences between Node.js core streams and Minipass streams, and the convenience methods provided by that class. ## Classes - Deflate - Inflate - Gzip - Gunzip - DeflateRaw - InflateRaw - Unzip - BrotliCompress (Node v10 and higher) - BrotliDecompress (Node v10 and higher) ## USAGE ```js const zlib = require('minizlib') const input = sourceOfCompressedData() const decode = new zlib.BrotliDecompress() const output = whereToWriteTheDecodedData() input.pipe(decode).pipe(output) ``` ## REPRODUCIBLE BUILDS To create reproducible gzip compressed files across different operating systems, set `portable: true` in the options. This causes minizlib to set the `OS` indicator in byte 9 of the extended gzip header to `0xFF` for 'unknown'. discontinuous-range =================== ``` DiscontinuousRange(1, 10).subtract(4, 6); // [ 1-3, 7-10 ] ``` [](https://travis-ci.org/dtudury/discontinuous-range) this is a pretty simple module, but it exists to service another project so this'll be pretty lacking documentation. reading the test to see how this works may help. otherwise, here's an example that I think pretty much sums it up ###Example ``` var all_numbers = new DiscontinuousRange(1, 100); var bad_numbers = DiscontinuousRange(13).add(8).add(60,80); var good_numbers = all_numbers.clone().subtract(bad_numbers); console.log(good_numbers.toString()); //[ 1-7, 9-12, 14-59, 81-100 ] var random_good_number = good_numbers.index(Math.floor(Math.random() * good_numbers.length)); ``` ESQuery is a library for querying the AST output by Esprima for patterns of syntax using a CSS style selector system. Check out the demo: [demo](https://estools.github.io/esquery/) The following selectors are supported: * AST node type: `ForStatement` * [wildcard](http://dev.w3.org/csswg/selectors4/#universal-selector): `*` * [attribute existence](http://dev.w3.org/csswg/selectors4/#attribute-selectors): `[attr]` * [attribute value](http://dev.w3.org/csswg/selectors4/#attribute-selectors): `[attr="foo"]` or `[attr=123]` * attribute regex: `[attr=/foo.*/]` or (with flags) `[attr=/foo.*/is]` * attribute conditions: `[attr!="foo"]`, `[attr>2]`, `[attr<3]`, `[attr>=2]`, or `[attr<=3]` * nested attribute: `[attr.level2="foo"]` * field: `FunctionDeclaration > Identifier.id` * [First](http://dev.w3.org/csswg/selectors4/#the-first-child-pseudo) or [last](http://dev.w3.org/csswg/selectors4/#the-last-child-pseudo) child: `:first-child` or `:last-child` * [nth-child](http://dev.w3.org/csswg/selectors4/#the-nth-child-pseudo) (no ax+b support): `:nth-child(2)` * [nth-last-child](http://dev.w3.org/csswg/selectors4/#the-nth-last-child-pseudo) (no ax+b support): `:nth-last-child(1)` * [descendant](http://dev.w3.org/csswg/selectors4/#descendant-combinators): `ancestor descendant` * [child](http://dev.w3.org/csswg/selectors4/#child-combinators): `parent > child` * [following sibling](http://dev.w3.org/csswg/selectors4/#general-sibling-combinators): `node ~ sibling` * [adjacent sibling](http://dev.w3.org/csswg/selectors4/#adjacent-sibling-combinators): `node + adjacent` * [negation](http://dev.w3.org/csswg/selectors4/#negation-pseudo): `:not(ForStatement)` * [has](https://drafts.csswg.org/selectors-4/#has-pseudo): `:has(ForStatement)` * [matches-any](http://dev.w3.org/csswg/selectors4/#matches): `:matches([attr] > :first-child, :last-child)` * [subject indicator](http://dev.w3.org/csswg/selectors4/#subject): `!IfStatement > [name="foo"]` * class of AST node: `:statement`, `:expression`, `:declaration`, `:function`, or `:pattern` [](https://travis-ci.org/estools/esquery) base64-js ========= `base64-js` does basic base64 encoding/decoding in pure JS. [](http://travis-ci.org/beatgammit/base64-js) Many browsers already have base64 encoding/decoding functionality, but it is for text data, not all-purpose binary data. Sometimes encoding/decoding binary data in the browser is useful, and that is what this module does. ## install With [npm](https://npmjs.org) do: `npm install base64-js` and `var base64js = require('base64-js')` For use in web browsers do: `<script src="base64js.min.js"></script>` [Get supported base64-js with the Tidelift Subscription](https://tidelift.com/subscription/pkg/npm-base64-js?utm_source=npm-base64-js&utm_medium=referral&utm_campaign=readme) ## methods `base64js` has three exposed functions, `byteLength`, `toByteArray` and `fromByteArray`, which both take a single argument. * `byteLength` - Takes a base64 string and returns length of byte array * `toByteArray` - Takes a base64 string and returns a byte array * `fromByteArray` - Takes a byte array and returns a base64 string ## license MIT # json-schema-traverse Traverse JSON Schema passing each schema object to callback [](https://github.com/epoberezkin/json-schema-traverse/actions?query=workflow%3Abuild) [](https://www.npmjs.com/package/json-schema-traverse) [](https://coveralls.io/github/epoberezkin/json-schema-traverse?branch=master) ## Install ``` npm install json-schema-traverse ``` ## Usage ```javascript const traverse = require('json-schema-traverse'); const schema = { properties: { foo: {type: 'string'}, bar: {type: 'integer'} } }; traverse(schema, {cb}); // cb is called 3 times with: // 1. root schema // 2. {type: 'string'} // 3. {type: 'integer'} // Or: traverse(schema, {cb: {pre, post}}); // pre is called 3 times with: // 1. root schema // 2. {type: 'string'} // 3. {type: 'integer'} // // post is called 3 times with: // 1. {type: 'string'} // 2. {type: 'integer'} // 3. root schema ``` Callback function `cb` is called for each schema object (not including draft-06 boolean schemas), including the root schema, in pre-order traversal. Schema references ($ref) are not resolved, they are passed as is. Alternatively, you can pass a `{pre, post}` object as `cb`, and then `pre` will be called before traversing child elements, and `post` will be called after all child elements have been traversed. Callback is passed these parameters: - _schema_: the current schema object - _JSON pointer_: from the root schema to the current schema object - _root schema_: the schema passed to `traverse` object - _parent JSON pointer_: from the root schema to the parent schema object (see below) - _parent keyword_: the keyword inside which this schema appears (e.g. `properties`, `anyOf`, etc.) - _parent schema_: not necessarily parent object/array; in the example above the parent schema for `{type: 'string'}` is the root schema - _index/property_: index or property name in the array/object containing multiple schemas; in the example above for `{type: 'string'}` the property name is `'foo'` ## Traverse objects in all unknown keywords ```javascript const traverse = require('json-schema-traverse'); const schema = { mySchema: { minimum: 1, maximum: 2 } }; traverse(schema, {allKeys: true, cb}); // cb is called 2 times with: // 1. root schema // 2. mySchema ``` Without option `allKeys: true` callback will be called only with root schema. ## Enterprise support json-schema-traverse package is a part of [Tidelift enterprise subscription](https://tidelift.com/subscription/pkg/npm-json-schema-traverse?utm_source=npm-json-schema-traverse&utm_medium=referral&utm_campaign=enterprise&utm_term=repo) - it provides a centralised commercial support to open-source software users, in addition to the support provided by software maintainers. ## Security contact To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. Please do NOT report security vulnerability via GitHub issues. ## License [MIT](https://github.com/epoberezkin/json-schema-traverse/blob/master/LICENSE) # mustache.js - Logic-less {{mustache}} templates with JavaScript > What could be more logical awesome than no logic at all? [](https://travis-ci.org/janl/mustache.js) [mustache.js](http://github.com/janl/mustache.js) is a zero-dependency implementation of the [mustache](http://mustache.github.com/) template system in JavaScript. [Mustache](http://mustache.github.com/) is a logic-less template syntax. It can be used for HTML, config files, source code - anything. It works by expanding tags in a template using values provided in a hash or object. We call it "logic-less" because there are no if statements, else clauses, or for loops. Instead there are only tags. Some tags are replaced with a value, some nothing, and others a series of values. For a language-agnostic overview of mustache's template syntax, see the `mustache(5)` [manpage](http://mustache.github.com/mustache.5.html). ## Where to use mustache.js? You can use mustache.js to render mustache templates anywhere you can use JavaScript. This includes web browsers, server-side environments such as [Node.js](http://nodejs.org/), and [CouchDB](http://couchdb.apache.org/) views. mustache.js ships with support for the [CommonJS](http://www.commonjs.org/) module API, the [Asynchronous Module Definition](https://github.com/amdjs/amdjs-api/wiki/AMD) API (AMD) and [ECMAScript modules](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules). In addition to being a package to be used programmatically, you can use it as a [command line tool](#command-line-tool). And this will be your templates after you use Mustache:  ## Install You can get Mustache via [npm](http://npmjs.com). ```bash $ npm install mustache --save ``` ## Usage Below is a quick example how to use mustache.js: ```js var view = { title: "Joe", calc: function () { return 2 + 4; } }; var output = Mustache.render("{{title}} spends {{calc}}", view); ``` In this example, the `Mustache.render` function takes two parameters: 1) the [mustache](http://mustache.github.com/) template and 2) a `view` object that contains the data and code needed to render the template. ## Templates A [mustache](http://mustache.github.com/) template is a string that contains any number of mustache tags. Tags are indicated by the double mustaches that surround them. `{{person}}` is a tag, as is `{{#person}}`. In both examples we refer to `person` as the tag's key. There are several types of tags available in mustache.js, described below. There are several techniques that can be used to load templates and hand them to mustache.js, here are two of them: #### Include Templates If you need a template for a dynamic part in a static website, you can consider including the template in the static HTML file to avoid loading templates separately. Here's a small example: ```js // file: render.js function renderHello() { var template = document.getElementById('template').innerHTML; var rendered = Mustache.render(template, { name: 'Luke' }); document.getElementById('target').innerHTML = rendered; } ``` ```html <html> <body onload="renderHello()"> <div id="target">Loading...</div> <script id="template" type="x-tmpl-mustache"> Hello {{ name }}! </script> <script src="https://unpkg.com/mustache@latest"></script> <script src="render.js"></script> </body> </html> ``` #### Load External Templates If your templates reside in individual files, you can load them asynchronously and render them when they arrive. Another example using [fetch](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch): ```js function renderHello() { fetch('template.mustache') .then((response) => response.text()) .then((template) => { var rendered = Mustache.render(template, { name: 'Luke' }); document.getElementById('target').innerHTML = rendered; }); } ``` ### Variables The most basic tag type is a simple variable. A `{{name}}` tag renders the value of the `name` key in the current context. If there is no such key, nothing is rendered. All variables are HTML-escaped by default. If you want to render unescaped HTML, use the triple mustache: `{{{name}}}`. You can also use `&` to unescape a variable. If you'd like to change HTML-escaping behavior globally (for example, to template non-HTML formats), you can override Mustache's escape function. For example, to disable all escaping: `Mustache.escape = function(text) {return text;};`. If you want `{{name}}` _not_ to be interpreted as a mustache tag, but rather to appear exactly as `{{name}}` in the output, you must change and then restore the default delimiter. See the [Custom Delimiters](#custom-delimiters) section for more information. View: ```json { "name": "Chris", "company": "<b>GitHub</b>" } ``` Template: ``` * {{name}} * {{age}} * {{company}} * {{{company}}} * {{&company}} {{=<% %>=}} * {{company}} <%={{ }}=%> ``` Output: ```html * Chris * * &lt;b&gt;GitHub&lt;/b&gt; * <b>GitHub</b> * <b>GitHub</b> * {{company}} ``` JavaScript's dot notation may be used to access keys that are properties of objects in a view. View: ```json { "name": { "first": "Michael", "last": "Jackson" }, "age": "RIP" } ``` Template: ```html * {{name.first}} {{name.last}} * {{age}} ``` Output: ```html * Michael Jackson * RIP ``` ### Sections Sections render blocks of text zero or more times, depending on the value of the key in the current context. A section begins with a pound and ends with a slash. That is, `{{#person}}` begins a `person` section, while `{{/person}}` ends it. The text between the two tags is referred to as that section's "block". The behavior of the section is determined by the value of the key. #### False Values or Empty Lists If the `person` key does not exist, or exists and has a value of `null`, `undefined`, `false`, `0`, or `NaN`, or is an empty string or an empty list, the block will not be rendered. View: ```json { "person": false } ``` Template: ```html Shown. {{#person}} Never shown! {{/person}} ``` Output: ```html Shown. ``` #### Non-Empty Lists If the `person` key exists and is not `null`, `undefined`, or `false`, and is not an empty list the block will be rendered one or more times. When the value is a list, the block is rendered once for each item in the list. The context of the block is set to the current item in the list for each iteration. In this way we can loop over collections. View: ```json { "stooges": [ { "name": "Moe" }, { "name": "Larry" }, { "name": "Curly" } ] } ``` Template: ```html {{#stooges}} <b>{{name}}</b> {{/stooges}} ``` Output: ```html <b>Moe</b> <b>Larry</b> <b>Curly</b> ``` When looping over an array of strings, a `.` can be used to refer to the current item in the list. View: ```json { "musketeers": ["Athos", "Aramis", "Porthos", "D'Artagnan"] } ``` Template: ```html {{#musketeers}} * {{.}} {{/musketeers}} ``` Output: ```html * Athos * Aramis * Porthos * D'Artagnan ``` If the value of a section variable is a function, it will be called in the context of the current item in the list on each iteration. View: ```js { "beatles": [ { "firstName": "John", "lastName": "Lennon" }, { "firstName": "Paul", "lastName": "McCartney" }, { "firstName": "George", "lastName": "Harrison" }, { "firstName": "Ringo", "lastName": "Starr" } ], "name": function () { return this.firstName + " " + this.lastName; } } ``` Template: ```html {{#beatles}} * {{name}} {{/beatles}} ``` Output: ```html * John Lennon * Paul McCartney * George Harrison * Ringo Starr ``` #### Functions If the value of a section key is a function, it is called with the section's literal block of text, un-rendered, as its first argument. The second argument is a special rendering function that uses the current view as its view argument. It is called in the context of the current view object. View: ```js { "name": "Tater", "bold": function () { return function (text, render) { return "<b>" + render(text) + "</b>"; } } } ``` Template: ```html {{#bold}}Hi {{name}}.{{/bold}} ``` Output: ```html <b>Hi Tater.</b> ``` ### Inverted Sections An inverted section opens with `{{^section}}` instead of `{{#section}}`. The block of an inverted section is rendered only if the value of that section's tag is `null`, `undefined`, `false`, *falsy* or an empty list. View: ```json { "repos": [] } ``` Template: ```html {{#repos}}<b>{{name}}</b>{{/repos}} {{^repos}}No repos :({{/repos}} ``` Output: ```html No repos :( ``` ### Comments Comments begin with a bang and are ignored. The following template: ```html <h1>Today{{! ignore me }}.</h1> ``` Will render as follows: ```html <h1>Today.</h1> ``` Comments may contain newlines. ### Partials Partials begin with a greater than sign, like {{> box}}. Partials are rendered at runtime (as opposed to compile time), so recursive partials are possible. Just avoid infinite loops. They also inherit the calling context. Whereas in ERB you may have this: ```html+erb <%= partial :next_more, :start => start, :size => size %> ``` Mustache requires only this: ```html {{> next_more}} ``` Why? Because the `next_more.mustache` file will inherit the `size` and `start` variables from the calling context. In this way you may want to think of partials as includes, imports, template expansion, nested templates, or subtemplates, even though those aren't literally the case here. For example, this template and partial: base.mustache: <h2>Names</h2> {{#names}} {{> user}} {{/names}} user.mustache: <strong>{{name}}</strong> Can be thought of as a single, expanded template: ```html <h2>Names</h2> {{#names}} <strong>{{name}}</strong> {{/names}} ``` In mustache.js an object of partials may be passed as the third argument to `Mustache.render`. The object should be keyed by the name of the partial, and its value should be the partial text. ```js Mustache.render(template, view, { user: userTemplate }); ``` ### Custom Delimiters Custom delimiters can be used in place of `{{` and `}}` by setting the new values in JavaScript or in templates. #### Setting in JavaScript The `Mustache.tags` property holds an array consisting of the opening and closing tag values. Set custom values by passing a new array of tags to `render()`, which gets honored over the default values, or by overriding the `Mustache.tags` property itself: ```js var customTags = [ '<%', '%>' ]; ``` ##### Pass Value into Render Method ```js Mustache.render(template, view, {}, customTags); ``` ##### Override Tags Property ```js Mustache.tags = customTags; // Subsequent parse() and render() calls will use customTags ``` #### Setting in Templates Set Delimiter tags start with an equals sign and change the tag delimiters from `{{` and `}}` to custom strings. Consider the following contrived example: ```html+erb * {{ default_tags }} {{=<% %>=}} * <% erb_style_tags %> <%={{ }}=%> * {{ default_tags_again }} ``` Here we have a list with three items. The first item uses the default tag style, the second uses ERB style as defined by the Set Delimiter tag, and the third returns to the default style after yet another Set Delimiter declaration. According to [ctemplates](https://htmlpreview.github.io/?https://raw.githubusercontent.com/OlafvdSpek/ctemplate/master/doc/howto.html), this "is useful for languages like TeX, where double-braces may occur in the text and are awkward to use for markup." Custom delimiters may not contain whitespace or the equals sign. ## Pre-parsing and Caching Templates By default, when mustache.js first parses a template it keeps the full parsed token tree in a cache. The next time it sees that same template it skips the parsing step and renders the template much more quickly. If you'd like, you can do this ahead of time using `mustache.parse`. ```js Mustache.parse(template); // Then, sometime later. Mustache.render(template, view); ``` ## Command line tool mustache.js is shipped with a Node.js based command line tool. It might be installed as a global tool on your computer to render a mustache template of some kind ```bash $ npm install -g mustache $ mustache dataView.json myTemplate.mustache > output.html ``` also supports stdin. ```bash $ cat dataView.json | mustache - myTemplate.mustache > output.html ``` or as a package.json `devDependency` in a build process maybe? ```bash $ npm install mustache --save-dev ``` ```json { "scripts": { "build": "mustache dataView.json myTemplate.mustache > public/output.html" } } ``` ```bash $ npm run build ``` The command line tool is basically a wrapper around `Mustache.render` so you get all the features. If your templates use partials you should pass paths to partials using `-p` flag: ```bash $ mustache -p path/to/partial1.mustache -p path/to/partial2.mustache dataView.json myTemplate.mustache ``` ## Plugins for JavaScript Libraries mustache.js may be built specifically for several different client libraries, including the following: - [jQuery](http://jquery.com/) - [MooTools](http://mootools.net/) - [Dojo](http://www.dojotoolkit.org/) - [YUI](http://developer.yahoo.com/yui/) - [qooxdoo](http://qooxdoo.org/) These may be built using [Rake](http://rake.rubyforge.org/) and one of the following commands: ```bash $ rake jquery $ rake mootools $ rake dojo $ rake yui3 $ rake qooxdoo ``` ## TypeScript Since the source code of this package is written in JavaScript, we follow the [TypeScript publishing docs](https://www.typescriptlang.org/docs/handbook/declaration-files/publishing.html) preferred approach by having type definitions available via [@types/mustache](https://www.npmjs.com/package/@types/mustache). ## Testing In order to run the tests you'll need to install [Node.js](http://nodejs.org/). You also need to install the sub module containing [Mustache specifications](http://github.com/mustache/spec) in the project root. ```bash $ git submodule init $ git submodule update ``` Install dependencies. ```bash $ npm install ``` Then run the tests. ```bash $ npm test ``` The test suite consists of both unit and integration tests. If a template isn't rendering correctly for you, you can make a test for it by doing the following: 1. Create a template file named `mytest.mustache` in the `test/_files` directory. Replace `mytest` with the name of your test. 2. Create a corresponding view file named `mytest.js` in the same directory. This file should contain a JavaScript object literal enclosed in parentheses. See any of the other view files for an example. 3. Create a file with the expected output in `mytest.txt` in the same directory. Then, you can run the test with: ```bash $ TEST=mytest npm run test-render ``` ### Browser tests Browser tests are not included in `npm test` as they run for too long, although they are ran automatically on Travis when merged into master. Run browser tests locally in any browser: ```bash $ npm run test-browser-local ``` then point your browser to `http://localhost:8080/__zuul` ## Who uses mustache.js? An updated list of mustache.js users is kept [on the Github wiki](https://github.com/janl/mustache.js/wiki/Beard-Competition). Add yourself or your company if you use mustache.js! ## Contributing mustache.js is a mature project, but it continues to actively invite maintainers. You can help out a high-profile project that is used in a lot of places on the web. No big commitment required, if all you do is review a single [Pull Request](https://github.com/janl/mustache.js/pulls), you are a maintainer. And a hero. ### Your First Contribution - review a [Pull Request](https://github.com/janl/mustache.js/pulls) - fix an [Issue](https://github.com/janl/mustache.js/issues) - update the [documentation](https://github.com/janl/mustache.js#usage) - make a website - write a tutorial ## Thanks mustache.js wouldn't kick ass if it weren't for these fine souls: * Chris Wanstrath / defunkt * Alexander Lang / langalex * Sebastian Cohnen / tisba * J Chris Anderson / jchris * Tom Robinson / tlrobinson * Aaron Quint / quirkey * Douglas Crockford * Nikita Vasilyev / NV * Elise Wood / glytch * Damien Mathieu / dmathieu * Jakub Kuźma / qoobaa * Will Leinweber / will * dpree * Jason Smith / jhs * Aaron Gibralter / agibralter * Ross Boucher / boucher * Matt Sanford / mzsanford * Ben Cherry / bcherry * Michael Jackson / mjackson * Phillip Johnsen / phillipj * David da Silva Contín / dasilvacontin <h1 align="center"> <img width="250" src="https://rawgit.com/lukechilds/keyv/master/media/logo.svg" alt="keyv"> <br> <br> </h1> > Simple key-value storage with support for multiple backends [](https://travis-ci.org/lukechilds/keyv) [](https://coveralls.io/github/lukechilds/keyv?branch=master) [](https://www.npmjs.com/package/keyv) [](https://www.npmjs.com/package/keyv) Keyv provides a consistent interface for key-value storage across multiple backends via storage adapters. It supports TTL based expiry, making it suitable as a cache or a persistent key-value store. ## Features There are a few existing modules similar to Keyv, however Keyv is different because it: - Isn't bloated - Has a simple Promise based API - Suitable as a TTL based cache or persistent key-value store - [Easily embeddable](#add-cache-support-to-your-module) inside another module - Works with any storage that implements the [`Map`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map) API - Handles all JSON types plus `Buffer` - Supports namespaces - Wide range of [**efficient, well tested**](#official-storage-adapters) storage adapters - Connection errors are passed through (db failures won't kill your app) - Supports the current active LTS version of Node.js or higher ## Usage Install Keyv. ``` npm install --save keyv ``` By default everything is stored in memory, you can optionally also install a storage adapter. ``` npm install --save @keyv/redis npm install --save @keyv/mongo npm install --save @keyv/sqlite npm install --save @keyv/postgres npm install --save @keyv/mysql ``` Create a new Keyv instance, passing your connection string if applicable. Keyv will automatically load the correct storage adapter. ```js const Keyv = require('keyv'); // One of the following const keyv = new Keyv(); const keyv = new Keyv('redis://user:pass@localhost:6379'); const keyv = new Keyv('mongodb://user:pass@localhost:27017/dbname'); const keyv = new Keyv('sqlite://path/to/database.sqlite'); const keyv = new Keyv('postgresql://user:pass@localhost:5432/dbname'); const keyv = new Keyv('mysql://user:pass@localhost:3306/dbname'); // Handle DB connection errors keyv.on('error', err => console.log('Connection Error', err)); await keyv.set('foo', 'expires in 1 second', 1000); // true await keyv.set('foo', 'never expires'); // true await keyv.get('foo'); // 'never expires' await keyv.delete('foo'); // true await keyv.clear(); // undefined ``` ### Namespaces You can namespace your Keyv instance to avoid key collisions and allow you to clear only a certain namespace while using the same database. ```js const users = new Keyv('redis://user:pass@localhost:6379', { namespace: 'users' }); const cache = new Keyv('redis://user:pass@localhost:6379', { namespace: 'cache' }); await users.set('foo', 'users'); // true await cache.set('foo', 'cache'); // true await users.get('foo'); // 'users' await cache.get('foo'); // 'cache' await users.clear(); // undefined await users.get('foo'); // undefined await cache.get('foo'); // 'cache' ``` ### Custom Serializers Keyv uses [`json-buffer`](https://github.com/dominictarr/json-buffer) for data serialization to ensure consistency across different backends. You can optionally provide your own serialization functions to support extra data types or to serialize to something other than JSON. ```js const keyv = new Keyv({ serialize: JSON.stringify, deserialize: JSON.parse }); ``` **Warning:** Using custom serializers means you lose any guarantee of data consistency. You should do extensive testing with your serialisation functions and chosen storage engine. ## Official Storage Adapters The official storage adapters are covered by [over 150 integration tests](https://travis-ci.org/lukechilds/keyv/jobs/260418145) to guarantee consistent behaviour. They are lightweight, efficient wrappers over the DB clients making use of indexes and native TTLs where available. Database | Adapter | Native TTL | Status ---|---|---|--- Redis | [@keyv/redis](https://github.com/lukechilds/keyv-redis) | Yes | [](https://travis-ci.org/lukechilds/keyv-redis) [](https://coveralls.io/github/lukechilds/keyv-redis?branch=master) MongoDB | [@keyv/mongo](https://github.com/lukechilds/keyv-mongo) | Yes | [](https://travis-ci.org/lukechilds/keyv-mongo) [](https://coveralls.io/github/lukechilds/keyv-mongo?branch=master) SQLite | [@keyv/sqlite](https://github.com/lukechilds/keyv-sqlite) | No | [](https://travis-ci.org/lukechilds/keyv-sqlite) [](https://coveralls.io/github/lukechilds/keyv-sqlite?branch=master) PostgreSQL | [@keyv/postgres](https://github.com/lukechilds/keyv-postgres) | No | [](https://travis-ci.org/lukechildskeyv-postgreskeyv) [](https://coveralls.io/github/lukechilds/keyv-postgres?branch=master) MySQL | [@keyv/mysql](https://github.com/lukechilds/keyv-mysql) | No | [](https://travis-ci.org/lukechilds/keyv-mysql) [](https://coveralls.io/github/lukechilds/keyv-mysql?branch=master) ## Third-party Storage Adapters You can also use third-party storage adapters or build your own. Keyv will wrap these storage adapters in TTL functionality and handle complex types internally. ```js const Keyv = require('keyv'); const myAdapter = require('./my-storage-adapter'); const keyv = new Keyv({ store: myAdapter }); ``` Any store that follows the [`Map`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map) api will work. ```js new Keyv({ store: new Map() }); ``` For example, [`quick-lru`](https://github.com/sindresorhus/quick-lru) is a completely unrelated module that implements the Map API. ```js const Keyv = require('keyv'); const QuickLRU = require('quick-lru'); const lru = new QuickLRU({ maxSize: 1000 }); const keyv = new Keyv({ store: lru }); ``` The following are third-party storage adapters compatible with Keyv: - [quick-lru](https://github.com/sindresorhus/quick-lru) - Simple "Least Recently Used" (LRU) cache - [keyv-file](https://github.com/zaaack/keyv-file) - File system storage adapter for Keyv - [keyv-dynamodb](https://www.npmjs.com/package/keyv-dynamodb) - DynamoDB storage adapter for Keyv ## Add Cache Support to your Module Keyv is designed to be easily embedded into other modules to add cache support. The recommended pattern is to expose a `cache` option in your modules options which is passed through to Keyv. Caching will work in memory by default and users have the option to also install a Keyv storage adapter and pass in a connection string, or any other storage that implements the `Map` API. You should also set a namespace for your module so you can safely call `.clear()` without clearing unrelated app data. Inside your module: ```js class AwesomeModule { constructor(opts) { this.cache = new Keyv({ uri: typeof opts.cache === 'string' && opts.cache, store: typeof opts.cache !== 'string' && opts.cache, namespace: 'awesome-module' }); } } ``` Now it can be consumed like this: ```js const AwesomeModule = require('awesome-module'); // Caches stuff in memory by default const awesomeModule = new AwesomeModule(); // After npm install --save keyv-redis const awesomeModule = new AwesomeModule({ cache: 'redis://localhost' }); // Some third-party module that implements the Map API const awesomeModule = new AwesomeModule({ cache: some3rdPartyStore }); ``` ## API ### new Keyv([uri], [options]) Returns a new Keyv instance. The Keyv instance is also an `EventEmitter` that will emit an `'error'` event if the storage adapter connection fails. ### uri Type: `String`<br> Default: `undefined` The connection string URI. Merged into the options object as options.uri. ### options Type: `Object` The options object is also passed through to the storage adapter. Check your storage adapter docs for any extra options. #### options.namespace Type: `String`<br> Default: `'keyv'` Namespace for the current instance. #### options.ttl Type: `Number`<br> Default: `undefined` Default TTL. Can be overridden by specififying a TTL on `.set()`. #### options.serialize Type: `Function`<br> Default: `JSONB.stringify` A custom serialization function. #### options.deserialize Type: `Function`<br> Default: `JSONB.parse` A custom deserialization function. #### options.store Type: `Storage adapter instance`<br> Default: `new Map()` The storage adapter instance to be used by Keyv. #### options.adapter Type: `String`<br> Default: `undefined` Specify an adapter to use. e.g `'redis'` or `'mongodb'`. ### Instance Keys must always be strings. Values can be of any type. #### .set(key, value, [ttl]) Set a value. By default keys are persistent. You can set an expiry TTL in milliseconds. Returns `true`. #### .get(key) Returns the value. #### .delete(key) Deletes an entry. Returns `true` if the key existed, `false` if not. #### .clear() Delete all entries in the current namespace. Returns `undefined`. ## License MIT © Luke Childs # is-buffer [![travis][travis-image]][travis-url] [![npm][npm-image]][npm-url] [![downloads][downloads-image]][downloads-url] [![javascript style guide][standard-image]][standard-url] [travis-image]: https://img.shields.io/travis/feross/is-buffer/master.svg [travis-url]: https://travis-ci.org/feross/is-buffer [npm-image]: https://img.shields.io/npm/v/is-buffer.svg [npm-url]: https://npmjs.org/package/is-buffer [downloads-image]: https://img.shields.io/npm/dm/is-buffer.svg [downloads-url]: https://npmjs.org/package/is-buffer [standard-image]: https://img.shields.io/badge/code_style-standard-brightgreen.svg [standard-url]: https://standardjs.com #### Determine if an object is a [`Buffer`](http://nodejs.org/api/buffer.html) (including the [browserify Buffer](https://github.com/feross/buffer)) [![saucelabs][saucelabs-image]][saucelabs-url] [saucelabs-image]: https://saucelabs.com/browser-matrix/is-buffer.svg [saucelabs-url]: https://saucelabs.com/u/is-buffer ## Why not use `Buffer.isBuffer`? This module lets you check if an object is a `Buffer` without using `Buffer.isBuffer` (which includes the whole [buffer](https://github.com/feross/buffer) module in [browserify](http://browserify.org/)). It's future-proof and works in node too! ## install ```bash npm install is-buffer ``` ## usage ```js var isBuffer = require('is-buffer') isBuffer(new Buffer(4)) // true isBuffer(undefined) // false isBuffer(null) // false isBuffer('') // false isBuffer(true) // false isBuffer(false) // false isBuffer(0) // false isBuffer(1) // false isBuffer(1.0) // false isBuffer('string') // false isBuffer({}) // false isBuffer(function foo () {}) // false ``` ## license MIT. Copyright (C) [Feross Aboukhadijeh](http://feross.org). # assemblyscript-regex A regex engine for AssemblyScript. [AssemblyScript](https://www.assemblyscript.org/) is a new language, based on TypeScript, that runs on WebAssembly. AssemblyScript has a lightweight standard library, but lacks support for Regular Expression. The project fills that gap! This project exposes an API that mirrors the JavaScript [RegExp](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp) class: ```javascript const regex = new RegExp("fo*", "g"); const str = "table football, foul"; let match: Match | null = regex.exec(str); while (match != null) { // first iteration // match.index = 6 // match.matches[0] = "foo" // second iteration // match.index = 16 // match.matches[0] = "fo" match = regex.exec(str); } ``` ## Project status The initial focus of this implementation has been feature support and functionality over performance. It currently supports a sufficient number of regex features to be considered useful, including most character classes, common assertions, groups, alternations, capturing groups and quantifiers. The next phase of development will focussed on more extensive testing and performance. The project currently has reasonable unit test coverage, focussed on positive and negative test cases on a per-feature basis. It also includes a more exhaustive test suite with test cases borrowed from another regex library. ### Feature support Based on the classfication within the [MDN cheatsheet](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions/Cheatsheet) **Character sets** - [x] . - [x] \d - [x] \D - [x] \w - [x] \W - [x] \s - [x] \S - [x] \t - [x] \r - [x] \n - [x] \v - [x] \f - [ ] [\b] - [ ] \0 - [ ] \cX - [x] \xhh - [x] \uhhhh - [ ] \u{hhhh} or \u{hhhhh} - [x] \ **Assertions** - [x] ^ - [x] $ - [ ] \b - [ ] \B **Other assertions** - [ ] x(?=y) Lookahead assertion - [ ] x(?!y) Negative lookahead assertion - [ ] (?<=y)x Lookbehind assertion - [ ] (?<!y)x Negative lookbehind assertion **Groups and ranges** - [x] x|y - [x] [xyz][a-c] - [x] [^xyz][^a-c] - [x] (x) capturing group - [ ] \n back reference - [ ] (?<Name>x) named capturing group - [x] (?:x) Non-capturing group **Quantifiers** - [x] x\* - [x] x+ - [x] x? - [x] x{n} - [x] x{n,} - [x] x{n,m} - [ ] x\*? / x+? / ... **RegExp** - [x] global - [ ] sticky - [x] case insensitive - [x] multiline - [x] dotAll - [ ] unicode ### Development This project is open source, MIT licenced and your contributions are very much welcomed. To get started, check out the repository and install dependencies: ``` $ npm install ``` A few general points about the tools and processes this project uses: - This project uses prettier for code formatting and eslint to provide additional syntactic checks. These are both run on `npm test` and as part of the CI build. - The unit tests are executed using [as-pect](https://github.com/jtenner/as-pect) - a native AssemblyScript test runner - The specification tests are within the `spec` folder. The `npm run test:generate` target transforms these tests into as-pect tests which execute as part of the standard build / test cycle - In order to support improved debugging you can execute this library as TypeScript (rather than WebAssembly), via the `npm run tsrun` target. # Acorn-JSX [](https://travis-ci.org/acornjs/acorn-jsx) [](https://www.npmjs.org/package/acorn-jsx) This is plugin for [Acorn](http://marijnhaverbeke.nl/acorn/) - a tiny, fast JavaScript parser, written completely in JavaScript. It was created as an experimental alternative, faster [React.js JSX](http://facebook.github.io/react/docs/jsx-in-depth.html) parser. Later, it replaced the [official parser](https://github.com/facebookarchive/esprima) and these days is used by many prominent development tools. ## Transpiler Please note that this tool only parses source code to JSX AST, which is useful for various language tools and services. If you want to transpile your code to regular ES5-compliant JavaScript with source map, check out [Babel](https://babeljs.io/) and [Buble](https://buble.surge.sh/) transpilers which use `acorn-jsx` under the hood. ## Usage Requiring this module provides you with an Acorn plugin that you can use like this: ```javascript var acorn = require("acorn"); var jsx = require("acorn-jsx"); acorn.Parser.extend(jsx()).parse("my(<jsx/>, 'code');"); ``` Note that official spec doesn't support mix of XML namespaces and object-style access in tag names (#27) like in `<namespace:Object.Property />`, so it was deprecated in `acorn-jsx@3.0`. If you still want to opt-in to support of such constructions, you can pass the following option: ```javascript acorn.Parser.extend(jsx({ allowNamespacedObjects: true })) ``` Also, since most apps use pure React transformer, a new option was introduced that allows to prohibit namespaces completely: ```javascript acorn.Parser.extend(jsx({ allowNamespaces: false })) ``` Note that by default `allowNamespaces` is enabled for spec compliancy. ## License This plugin is issued under the [MIT license](./LICENSE). # parse-passwd [](https://www.npmjs.com/package/parse-passwd) [](https://npmjs.org/package/parse-passwd) [](https://travis-ci.org/doowb/parse-passwd) [](https://ci.appveyor.com/project/doowb/parse-passwd) > Parse a passwd file into a list of users. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save parse-passwd ``` ## Usage ```js var parse = require('parse-passwd'); ``` ## API **Example** ```js // assuming '/etc/passwd' contains: // doowb:*:123:123:Brian Woodward:/Users/doowb:/bin/bash console.log(parse(fs.readFileSync('/etc/passwd', 'utf8'))); //=> [ //=> { //=> username: 'doowb', //=> password: '*', //=> uid: '123', //=> gid: '123', //=> gecos: 'Brian Woodward', //=> homedir: '/Users/doowb', //=> shell: '/bin/bash' //=> } //=> ] ``` **Params** * `content` **{String}**: Content of a passwd file to parse. * `returns` **{Array}**: Array of user objects parsed from the content. ## About ### Contributing Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). Please read the [contributing guide](contributing.md) for avice on opening issues, pull requests, and coding standards. ### Building docs _(This document was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme) (a [verb](https://github.com/verbose/verb) generator), please don't edit the readme directly. Any changes to the readme must be made in [.verb.md](.verb.md).)_ To generate the readme and API documentation with [verb](https://github.com/verbose/verb): ```sh $ npm install -g verb verb-generate-readme && verb ``` ### Running tests Install dev dependencies: ```sh $ npm install -d && npm test ``` ### Author **Brian Woodward** * [github/doowb](https://github.com/doowb) * [twitter/doowb](http://twitter.com/doowb) ### License Copyright © 2016, [Brian Woodward](https://github.com/doowb). Released under the [MIT license](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.2.0, on October 19, 2016._ # expand-template > Expand placeholders in a template string. [](https://www.npmjs.com/package/expand-template)  [](https://travis-ci.org/ralphtheninja/expand-template) [](https://standardjs.com) ## Install ``` $ npm i expand-template -S ``` ## Usage Default functionality expands templates using `{}` as separators for string placeholders. ```js var expand = require('expand-template')() var template = '{foo}/{foo}/{bar}/{bar}' console.log(expand(template, { foo: 'BAR', bar: 'FOO' })) // -> BAR/BAR/FOO/FOO ``` Custom separators: ```js var expand = require('expand-template')({ sep: '[]' }) var template = '[foo]/[foo]/[bar]/[bar]' console.log(expand(template, { foo: 'BAR', bar: 'FOO' })) // -> BAR/BAR/FOO/FOO ``` ## License All code, unless stated otherwise, is dual-licensed under [`WTFPL`](http://www.wtfpl.net/txt/copying/) and [`MIT`](https://opensource.org/licenses/MIT). # word-wrap [](https://www.npmjs.com/package/word-wrap) [](https://npmjs.org/package/word-wrap) [](https://npmjs.org/package/word-wrap) [](https://travis-ci.org/jonschlinkert/word-wrap) > Wrap words to a specified length. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save word-wrap ``` ## Usage ```js var wrap = require('word-wrap'); wrap('Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.'); ``` Results in: ``` Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. ``` ## Options  ### options.width Type: `Number` Default: `50` The width of the text before wrapping to a new line. **Example:** ```js wrap(str, {width: 60}); ``` ### options.indent Type: `String` Default: `` (two spaces) The string to use at the beginning of each line. **Example:** ```js wrap(str, {indent: ' '}); ``` ### options.newline Type: `String` Default: `\n` The string to use at the end of each line. **Example:** ```js wrap(str, {newline: '\n\n'}); ``` ### options.escape Type: `function` Default: `function(str){return str;}` An escape function to run on each line after splitting them. **Example:** ```js var xmlescape = require('xml-escape'); wrap(str, { escape: function(string){ return xmlescape(string); } }); ``` ### options.trim Type: `Boolean` Default: `false` Trim trailing whitespace from the returned string. This option is included since `.trim()` would also strip the leading indentation from the first line. **Example:** ```js wrap(str, {trim: true}); ``` ### options.cut Type: `Boolean` Default: `false` Break a word between any two letters when the word is longer than the specified width. **Example:** ```js wrap(str, {cut: true}); ``` ## About ### Related projects * [common-words](https://www.npmjs.com/package/common-words): Updated list (JSON) of the 100 most common words in the English language. Useful for… [more](https://github.com/jonschlinkert/common-words) | [homepage](https://github.com/jonschlinkert/common-words "Updated list (JSON) of the 100 most common words in the English language. Useful for excluding these words from arrays.") * [shuffle-words](https://www.npmjs.com/package/shuffle-words): Shuffle the words in a string and optionally the letters in each word using the… [more](https://github.com/jonschlinkert/shuffle-words) | [homepage](https://github.com/jonschlinkert/shuffle-words "Shuffle the words in a string and optionally the letters in each word using the Fisher-Yates algorithm. Useful for creating test fixtures, benchmarking samples, etc.") * [unique-words](https://www.npmjs.com/package/unique-words): Return the unique words in a string or array. | [homepage](https://github.com/jonschlinkert/unique-words "Return the unique words in a string or array.") * [wordcount](https://www.npmjs.com/package/wordcount): Count the words in a string. Support for english, CJK and Cyrillic. | [homepage](https://github.com/jonschlinkert/wordcount "Count the words in a string. Support for english, CJK and Cyrillic.") ### Contributing Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). ### Contributors | **Commits** | **Contributor** | | --- | --- | | 43 | [jonschlinkert](https://github.com/jonschlinkert) | | 2 | [lordvlad](https://github.com/lordvlad) | | 2 | [hildjj](https://github.com/hildjj) | | 1 | [danilosampaio](https://github.com/danilosampaio) | | 1 | [2fd](https://github.com/2fd) | | 1 | [toddself](https://github.com/toddself) | | 1 | [wolfgang42](https://github.com/wolfgang42) | | 1 | [zachhale](https://github.com/zachhale) | ### Building docs _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` ### Running tests Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` ### Author **Jon Schlinkert** * [github/jonschlinkert](https://github.com/jonschlinkert) * [twitter/jonschlinkert](https://twitter.com/jonschlinkert) ### License Copyright © 2017, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT License](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.6.0, on June 02, 2017._ [](https://travis-ci.org/isaacs/rimraf) [](https://david-dm.org/isaacs/rimraf) [](https://david-dm.org/isaacs/rimraf#info=devDependencies) The [UNIX command](http://en.wikipedia.org/wiki/Rm_(Unix)) `rm -rf` for node. Install with `npm install rimraf`, or just drop rimraf.js somewhere. ## API `rimraf(f, [opts], callback)` The first parameter will be interpreted as a globbing pattern for files. If you want to disable globbing you can do so with `opts.disableGlob` (defaults to `false`). This might be handy, for instance, if you have filenames that contain globbing wildcard characters. The callback will be called with an error if there is one. Certain errors are handled for you: * Windows: `EBUSY` and `ENOTEMPTY` - rimraf will back off a maximum of `opts.maxBusyTries` times before giving up, adding 100ms of wait between each attempt. The default `maxBusyTries` is 3. * `ENOENT` - If the file doesn't exist, rimraf will return successfully, since your desired outcome is already the case. * `EMFILE` - Since `readdir` requires opening a file descriptor, it's possible to hit `EMFILE` if too many file descriptors are in use. In the sync case, there's nothing to be done for this. But in the async case, rimraf will gradually back off with timeouts up to `opts.emfileWait` ms, which defaults to 1000. ## options * unlink, chmod, stat, lstat, rmdir, readdir, unlinkSync, chmodSync, statSync, lstatSync, rmdirSync, readdirSync In order to use a custom file system library, you can override specific fs functions on the options object. If any of these functions are present on the options object, then the supplied function will be used instead of the default fs method. Sync methods are only relevant for `rimraf.sync()`, of course. For example: ```javascript var myCustomFS = require('some-custom-fs') rimraf('some-thing', myCustomFS, callback) ``` * maxBusyTries If an `EBUSY`, `ENOTEMPTY`, or `EPERM` error code is encountered on Windows systems, then rimraf will retry with a linear backoff wait of 100ms longer on each try. The default maxBusyTries is 3. Only relevant for async usage. * emfileWait If an `EMFILE` error is encountered, then rimraf will retry repeatedly with a linear backoff of 1ms longer on each try, until the timeout counter hits this max. The default limit is 1000. If you repeatedly encounter `EMFILE` errors, then consider using [graceful-fs](http://npm.im/graceful-fs) in your program. Only relevant for async usage. * glob Set to `false` to disable [glob](http://npm.im/glob) pattern matching. Set to an object to pass options to the glob module. The default glob options are `{ nosort: true, silent: true }`. Glob version 6 is used in this module. Relevant for both sync and async usage. * disableGlob Set to any non-falsey value to disable globbing entirely. (Equivalent to setting `glob: false`.) ## rimraf.sync It can remove stuff synchronously, too. But that's not so good. Use the async API. It's better. ## CLI If installed with `npm install rimraf -g` it can be used as a global command `rimraf <path> [<path> ...]` which is useful for cross platform support. ## mkdirp If you need to create a directory recursively, check out [mkdirp](https://github.com/substack/node-mkdirp). # tslib This is a runtime library for [TypeScript](http://www.typescriptlang.org/) that contains all of the TypeScript helper functions. This library is primarily used by the `--importHelpers` flag in TypeScript. When using `--importHelpers`, a module that uses helper functions like `__extends` and `__assign` in the following emitted file: ```ts var __assign = (this && this.__assign) || Object.assign || function(t) { for (var s, i = 1, n = arguments.length; i < n; i++) { s = arguments[i]; for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p]; } return t; }; exports.x = {}; exports.y = __assign({}, exports.x); ``` will instead be emitted as something like the following: ```ts var tslib_1 = require("tslib"); exports.x = {}; exports.y = tslib_1.__assign({}, exports.x); ``` Because this can avoid duplicate declarations of things like `__extends`, `__assign`, etc., this means delivering users smaller files on average, as well as less runtime overhead. For optimized bundles with TypeScript, you should absolutely consider using `tslib` and `--importHelpers`. # Installing For the latest stable version, run: ## npm ```sh # TypeScript 2.3.3 or later npm install tslib # TypeScript 2.3.2 or earlier npm install tslib@1.6.1 ``` ## yarn ```sh # TypeScript 2.3.3 or later yarn add tslib # TypeScript 2.3.2 or earlier yarn add tslib@1.6.1 ``` ## bower ```sh # TypeScript 2.3.3 or later bower install tslib # TypeScript 2.3.2 or earlier bower install tslib@1.6.1 ``` ## JSPM ```sh # TypeScript 2.3.3 or later jspm install tslib # TypeScript 2.3.2 or earlier jspm install tslib@1.6.1 ``` # Usage Set the `importHelpers` compiler option on the command line: ``` tsc --importHelpers file.ts ``` or in your tsconfig.json: ```json { "compilerOptions": { "importHelpers": true } } ``` #### For bower and JSPM users You will need to add a `paths` mapping for `tslib`, e.g. For Bower users: ```json { "compilerOptions": { "module": "amd", "importHelpers": true, "baseUrl": "./", "paths": { "tslib" : ["bower_components/tslib/tslib.d.ts"] } } } ``` For JSPM users: ```json { "compilerOptions": { "module": "system", "importHelpers": true, "baseUrl": "./", "paths": { "tslib" : ["jspm_packages/npm/tslib@1.[version].0/tslib.d.ts"] } } } ``` # Contribute There are many ways to [contribute](https://github.com/Microsoft/TypeScript/blob/master/CONTRIBUTING.md) to TypeScript. * [Submit bugs](https://github.com/Microsoft/TypeScript/issues) and help us verify fixes as they are checked in. * Review the [source code changes](https://github.com/Microsoft/TypeScript/pulls). * Engage with other TypeScript users and developers on [StackOverflow](http://stackoverflow.com/questions/tagged/typescript). * Join the [#typescript](http://twitter.com/#!/search/realtime/%23typescript) discussion on Twitter. * [Contribute bug fixes](https://github.com/Microsoft/TypeScript/blob/master/CONTRIBUTING.md). # Documentation * [Quick tutorial](http://www.typescriptlang.org/Tutorial) * [Programming handbook](http://www.typescriptlang.org/Handbook) * [Homepage](http://www.typescriptlang.org/) <h1 align="center">Picomatch</h1> <p align="center"> <a href="https://npmjs.org/package/picomatch"> <img src="https://img.shields.io/npm/v/picomatch.svg" alt="version"> </a> <a href="https://github.com/micromatch/picomatch/actions?workflow=Tests"> <img src="https://github.com/micromatch/picomatch/workflows/Tests/badge.svg" alt="test status"> </a> <a href="https://coveralls.io/github/micromatch/picomatch"> <img src="https://img.shields.io/coveralls/github/micromatch/picomatch/master.svg" alt="coverage status"> </a> <a href="https://npmjs.org/package/picomatch"> <img src="https://img.shields.io/npm/dm/picomatch.svg" alt="downloads"> </a> </p> <br> <br> <p align="center"> <strong>Blazing fast and accurate glob matcher written in JavaScript.</strong></br> <em>No dependencies and full support for standard and extended Bash glob features, including braces, extglobs, POSIX brackets, and regular expressions.</em> </p> <br> <br> ## Why picomatch? * **Lightweight** - No dependencies * **Minimal** - Tiny API surface. Main export is a function that takes a glob pattern and returns a matcher function. * **Fast** - Loads in about 2ms (that's several times faster than a [single frame of a HD movie](http://www.endmemo.com/sconvert/framespersecondframespermillisecond.php) at 60fps) * **Performant** - Use the returned matcher function to speed up repeat matching (like when watching files) * **Accurate matching** - Using wildcards (`*` and `?`), globstars (`**`) for nested directories, [advanced globbing](#advanced-globbing) with extglobs, braces, and POSIX brackets, and support for escaping special characters with `\` or quotes. * **Well tested** - Thousands of unit tests See the [library comparison](#library-comparisons) to other libraries. <br> <br> ## Table of Contents <details><summary> Click to expand </summary> - [Install](#install) - [Usage](#usage) - [API](#api) * [picomatch](#picomatch) * [.test](#test) * [.matchBase](#matchbase) * [.isMatch](#ismatch) * [.parse](#parse) * [.scan](#scan) * [.compileRe](#compilere) * [.makeRe](#makere) * [.toRegex](#toregex) - [Options](#options) * [Picomatch options](#picomatch-options) * [Scan Options](#scan-options) * [Options Examples](#options-examples) - [Globbing features](#globbing-features) * [Basic globbing](#basic-globbing) * [Advanced globbing](#advanced-globbing) * [Braces](#braces) * [Matching special characters as literals](#matching-special-characters-as-literals) - [Library Comparisons](#library-comparisons) - [Benchmarks](#benchmarks) - [Philosophies](#philosophies) - [About](#about) * [Author](#author) * [License](#license) _(TOC generated by [verb](https://github.com/verbose/verb) using [markdown-toc](https://github.com/jonschlinkert/markdown-toc))_ </details> <br> <br> ## Install Install with [npm](https://www.npmjs.com/): ```sh npm install --save picomatch ``` <br> ## Usage The main export is a function that takes a glob pattern and an options object and returns a function for matching strings. ```js const pm = require('picomatch'); const isMatch = pm('*.js'); console.log(isMatch('abcd')); //=> false console.log(isMatch('a.js')); //=> true console.log(isMatch('a.md')); //=> false console.log(isMatch('a/b.js')); //=> false ``` <br> ## API ### [picomatch](lib/picomatch.js#L32) Creates a matcher function from one or more glob patterns. The returned function takes a string to match as its first argument, and returns true if the string is a match. The returned matcher function also takes a boolean as the second argument that, when true, returns an object with additional information. **Params** * `globs` **{String|Array}**: One or more glob patterns. * `options` **{Object=}** * `returns` **{Function=}**: Returns a matcher function. **Example** ```js const picomatch = require('picomatch'); // picomatch(glob[, options]); const isMatch = picomatch('*.!(*a)'); console.log(isMatch('a.a')); //=> false console.log(isMatch('a.b')); //=> true ``` ### [.test](lib/picomatch.js#L117) Test `input` with the given `regex`. This is used by the main `picomatch()` function to test the input string. **Params** * `input` **{String}**: String to test. * `regex` **{RegExp}** * `returns` **{Object}**: Returns an object with matching info. **Example** ```js const picomatch = require('picomatch'); // picomatch.test(input, regex[, options]); console.log(picomatch.test('foo/bar', /^(?:([^/]*?)\/([^/]*?))$/)); // { isMatch: true, match: [ 'foo/', 'foo', 'bar' ], output: 'foo/bar' } ``` ### [.matchBase](lib/picomatch.js#L161) Match the basename of a filepath. **Params** * `input` **{String}**: String to test. * `glob` **{RegExp|String}**: Glob pattern or regex created by [.makeRe](#makeRe). * `returns` **{Boolean}** **Example** ```js const picomatch = require('picomatch'); // picomatch.matchBase(input, glob[, options]); console.log(picomatch.matchBase('foo/bar.js', '*.js'); // true ``` ### [.isMatch](lib/picomatch.js#L183) Returns true if **any** of the given glob `patterns` match the specified `string`. **Params** * **{String|Array}**: str The string to test. * **{String|Array}**: patterns One or more glob patterns to use for matching. * **{Object}**: See available [options](#options). * `returns` **{Boolean}**: Returns true if any patterns match `str` **Example** ```js const picomatch = require('picomatch'); // picomatch.isMatch(string, patterns[, options]); console.log(picomatch.isMatch('a.a', ['b.*', '*.a'])); //=> true console.log(picomatch.isMatch('a.a', 'b.*')); //=> false ``` ### [.parse](lib/picomatch.js#L199) Parse a glob pattern to create the source string for a regular expression. **Params** * `pattern` **{String}** * `options` **{Object}** * `returns` **{Object}**: Returns an object with useful properties and output to be used as a regex source string. **Example** ```js const picomatch = require('picomatch'); const result = picomatch.parse(pattern[, options]); ``` ### [.scan](lib/picomatch.js#L231) Scan a glob pattern to separate the pattern into segments. **Params** * `input` **{String}**: Glob pattern to scan. * `options` **{Object}** * `returns` **{Object}**: Returns an object with **Example** ```js const picomatch = require('picomatch'); // picomatch.scan(input[, options]); const result = picomatch.scan('!./foo/*.js'); console.log(result); { prefix: '!./', input: '!./foo/*.js', start: 3, base: 'foo', glob: '*.js', isBrace: false, isBracket: false, isGlob: true, isExtglob: false, isGlobstar: false, negated: true } ``` ### [.compileRe](lib/picomatch.js#L245) Compile a regular expression from the `state` object returned by the [parse()](#parse) method. **Params** * `state` **{Object}** * `options` **{Object}** * `returnOutput` **{Boolean}**: Intended for implementors, this argument allows you to return the raw output from the parser. * `returnState` **{Boolean}**: Adds the state to a `state` property on the returned regex. Useful for implementors and debugging. * `returns` **{RegExp}** ### [.makeRe](lib/picomatch.js#L286) Create a regular expression from a parsed glob pattern. **Params** * `state` **{String}**: The object returned from the `.parse` method. * `options` **{Object}** * `returnOutput` **{Boolean}**: Implementors may use this argument to return the compiled output, instead of a regular expression. This is not exposed on the options to prevent end-users from mutating the result. * `returnState` **{Boolean}**: Implementors may use this argument to return the state from the parsed glob with the returned regular expression. * `returns` **{RegExp}**: Returns a regex created from the given pattern. **Example** ```js const picomatch = require('picomatch'); const state = picomatch.parse('*.js'); // picomatch.compileRe(state[, options]); console.log(picomatch.compileRe(state)); //=> /^(?:(?!\.)(?=.)[^/]*?\.js)$/ ``` ### [.toRegex](lib/picomatch.js#L321) Create a regular expression from the given regex source string. **Params** * `source` **{String}**: Regular expression source string. * `options` **{Object}** * `returns` **{RegExp}** **Example** ```js const picomatch = require('picomatch'); // picomatch.toRegex(source[, options]); const { output } = picomatch.parse('*.js'); console.log(picomatch.toRegex(output)); //=> /^(?:(?!\.)(?=.)[^/]*?\.js)$/ ``` <br> ## Options ### Picomatch options The following options may be used with the main `picomatch()` function or any of the methods on the picomatch API. | **Option** | **Type** | **Default value** | **Description** | | --- | --- | --- | --- | | `basename` | `boolean` | `false` | If set, then patterns without slashes will be matched against the basename of the path if it contains slashes. For example, `a?b` would match the path `/xyz/123/acb`, but not `/xyz/acb/123`. | | `bash` | `boolean` | `false` | Follow bash matching rules more strictly - disallows backslashes as escape characters, and treats single stars as globstars (`**`). | | `capture` | `boolean` | `undefined` | Return regex matches in supporting methods. | | `contains` | `boolean` | `undefined` | Allows glob to match any part of the given string(s). | | `cwd` | `string` | `process.cwd()` | Current working directory. Used by `picomatch.split()` | | `debug` | `boolean` | `undefined` | Debug regular expressions when an error is thrown. | | `dot` | `boolean` | `false` | Enable dotfile matching. By default, dotfiles are ignored unless a `.` is explicitly defined in the pattern, or `options.dot` is true | | `expandRange` | `function` | `undefined` | Custom function for expanding ranges in brace patterns, such as `{a..z}`. The function receives the range values as two arguments, and it must return a string to be used in the generated regex. It's recommended that returned strings be wrapped in parentheses. | | `failglob` | `boolean` | `false` | Throws an error if no matches are found. Based on the bash option of the same name. | | `fastpaths` | `boolean` | `true` | To speed up processing, full parsing is skipped for a handful common glob patterns. Disable this behavior by setting this option to `false`. | | `flags` | `string` | `undefined` | Regex flags to use in the generated regex. If defined, the `nocase` option will be overridden. | | [format](#optionsformat) | `function` | `undefined` | Custom function for formatting the returned string. This is useful for removing leading slashes, converting Windows paths to Posix paths, etc. | | `ignore` | `array\|string` | `undefined` | One or more glob patterns for excluding strings that should not be matched from the result. | | `keepQuotes` | `boolean` | `false` | Retain quotes in the generated regex, since quotes may also be used as an alternative to backslashes. | | `literalBrackets` | `boolean` | `undefined` | When `true`, brackets in the glob pattern will be escaped so that only literal brackets will be matched. | | `matchBase` | `boolean` | `false` | Alias for `basename` | | `maxLength` | `boolean` | `65536` | Limit the max length of the input string. An error is thrown if the input string is longer than this value. | | `nobrace` | `boolean` | `false` | Disable brace matching, so that `{a,b}` and `{1..3}` would be treated as literal characters. | | `nobracket` | `boolean` | `undefined` | Disable matching with regex brackets. | | `nocase` | `boolean` | `false` | Make matching case-insensitive. Equivalent to the regex `i` flag. Note that this option is overridden by the `flags` option. | | `nodupes` | `boolean` | `true` | Deprecated, use `nounique` instead. This option will be removed in a future major release. By default duplicates are removed. Disable uniquification by setting this option to false. | | `noext` | `boolean` | `false` | Alias for `noextglob` | | `noextglob` | `boolean` | `false` | Disable support for matching with extglobs (like `+(a\|b)`) | | `noglobstar` | `boolean` | `false` | Disable support for matching nested directories with globstars (`**`) | | `nonegate` | `boolean` | `false` | Disable support for negating with leading `!` | | `noquantifiers` | `boolean` | `false` | Disable support for regex quantifiers (like `a{1,2}`) and treat them as brace patterns to be expanded. | | [onIgnore](#optionsonIgnore) | `function` | `undefined` | Function to be called on ignored items. | | [onMatch](#optionsonMatch) | `function` | `undefined` | Function to be called on matched items. | | [onResult](#optionsonResult) | `function` | `undefined` | Function to be called on all items, regardless of whether or not they are matched or ignored. | | `posix` | `boolean` | `false` | Support POSIX character classes ("posix brackets"). | | `posixSlashes` | `boolean` | `undefined` | Convert all slashes in file paths to forward slashes. This does not convert slashes in the glob pattern itself | | `prepend` | `boolean` | `undefined` | String to prepend to the generated regex used for matching. | | `regex` | `boolean` | `false` | Use regular expression rules for `+` (instead of matching literal `+`), and for stars that follow closing parentheses or brackets (as in `)*` and `]*`). | | `strictBrackets` | `boolean` | `undefined` | Throw an error if brackets, braces, or parens are imbalanced. | | `strictSlashes` | `boolean` | `undefined` | When true, picomatch won't match trailing slashes with single stars. | | `unescape` | `boolean` | `undefined` | Remove backslashes preceding escaped characters in the glob pattern. By default, backslashes are retained. | | `unixify` | `boolean` | `undefined` | Alias for `posixSlashes`, for backwards compatibility. | picomatch has automatic detection for regex positive and negative lookbehinds. If the pattern contains a negative lookbehind, you must be using Node.js >= 8.10 or else picomatch will throw an error. ### Scan Options In addition to the main [picomatch options](#picomatch-options), the following options may also be used with the [.scan](#scan) method. | **Option** | **Type** | **Default value** | **Description** | | --- | --- | --- | --- | | `tokens` | `boolean` | `false` | When `true`, the returned object will include an array of tokens (objects), representing each path "segment" in the scanned glob pattern | | `parts` | `boolean` | `false` | When `true`, the returned object will include an array of strings representing each path "segment" in the scanned glob pattern. This is automatically enabled when `options.tokens` is true | **Example** ```js const picomatch = require('picomatch'); const result = picomatch.scan('!./foo/*.js', { tokens: true }); console.log(result); // { // prefix: '!./', // input: '!./foo/*.js', // start: 3, // base: 'foo', // glob: '*.js', // isBrace: false, // isBracket: false, // isGlob: true, // isExtglob: false, // isGlobstar: false, // negated: true, // maxDepth: 2, // tokens: [ // { value: '!./', depth: 0, isGlob: false, negated: true, isPrefix: true }, // { value: 'foo', depth: 1, isGlob: false }, // { value: '*.js', depth: 1, isGlob: true } // ], // slashes: [ 2, 6 ], // parts: [ 'foo', '*.js' ] // } ``` <br> ### Options Examples #### options.expandRange **Type**: `function` **Default**: `undefined` Custom function for expanding ranges in brace patterns. The [fill-range](https://github.com/jonschlinkert/fill-range) library is ideal for this purpose, or you can use custom code to do whatever you need. **Example** The following example shows how to create a glob that matches a folder ```js const fill = require('fill-range'); const regex = pm.makeRe('foo/{01..25}/bar', { expandRange(a, b) { return `(${fill(a, b, { toRegex: true })})`; } }); console.log(regex); //=> /^(?:foo\/((?:0[1-9]|1[0-9]|2[0-5]))\/bar)$/ console.log(regex.test('foo/00/bar')) // false console.log(regex.test('foo/01/bar')) // true console.log(regex.test('foo/10/bar')) // true console.log(regex.test('foo/22/bar')) // true console.log(regex.test('foo/25/bar')) // true console.log(regex.test('foo/26/bar')) // false ``` #### options.format **Type**: `function` **Default**: `undefined` Custom function for formatting strings before they're matched. **Example** ```js // strip leading './' from strings const format = str => str.replace(/^\.\//, ''); const isMatch = picomatch('foo/*.js', { format }); console.log(isMatch('./foo/bar.js')); //=> true ``` #### options.onMatch ```js const onMatch = ({ glob, regex, input, output }) => { console.log({ glob, regex, input, output }); }; const isMatch = picomatch('*', { onMatch }); isMatch('foo'); isMatch('bar'); isMatch('baz'); ``` #### options.onIgnore ```js const onIgnore = ({ glob, regex, input, output }) => { console.log({ glob, regex, input, output }); }; const isMatch = picomatch('*', { onIgnore, ignore: 'f*' }); isMatch('foo'); isMatch('bar'); isMatch('baz'); ``` #### options.onResult ```js const onResult = ({ glob, regex, input, output }) => { console.log({ glob, regex, input, output }); }; const isMatch = picomatch('*', { onResult, ignore: 'f*' }); isMatch('foo'); isMatch('bar'); isMatch('baz'); ``` <br> <br> ## Globbing features * [Basic globbing](#basic-globbing) (Wildcard matching) * [Advanced globbing](#advanced-globbing) (extglobs, posix brackets, brace matching) ### Basic globbing | **Character** | **Description** | | --- | --- | | `*` | Matches any character zero or more times, excluding path separators. Does _not match_ path separators or hidden files or directories ("dotfiles"), unless explicitly enabled by setting the `dot` option to `true`. | | `**` | Matches any character zero or more times, including path separators. Note that `**` will only match path separators (`/`, and `\\` on Windows) when they are the only characters in a path segment. Thus, `foo**/bar` is equivalent to `foo*/bar`, and `foo/a**b/bar` is equivalent to `foo/a*b/bar`, and _more than two_ consecutive stars in a glob path segment are regarded as _a single star_. Thus, `foo/***/bar` is equivalent to `foo/*/bar`. | | `?` | Matches any character excluding path separators one time. Does _not match_ path separators or leading dots. | | `[abc]` | Matches any characters inside the brackets. For example, `[abc]` would match the characters `a`, `b` or `c`, and nothing else. | #### Matching behavior vs. Bash Picomatch's matching features and expected results in unit tests are based on Bash's unit tests and the Bash 4.3 specification, with the following exceptions: * Bash will match `foo/bar/baz` with `*`. Picomatch only matches nested directories with `**`. * Bash greedily matches with negated extglobs. For example, Bash 4.3 says that `!(foo)*` should match `foo` and `foobar`, since the trailing `*` bracktracks to match the preceding pattern. This is very memory-inefficient, and IMHO, also incorrect. Picomatch would return `false` for both `foo` and `foobar`. <br> ### Advanced globbing * [extglobs](#extglobs) * [POSIX brackets](#posix-brackets) * [Braces](#brace-expansion) #### Extglobs | **Pattern** | **Description** | | --- | --- | | `@(pattern)` | Match _only one_ consecutive occurrence of `pattern` | | `*(pattern)` | Match _zero or more_ consecutive occurrences of `pattern` | | `+(pattern)` | Match _one or more_ consecutive occurrences of `pattern` | | `?(pattern)` | Match _zero or **one**_ consecutive occurrences of `pattern` | | `!(pattern)` | Match _anything but_ `pattern` | **Examples** ```js const pm = require('picomatch'); // *(pattern) matches ZERO or more of "pattern" console.log(pm.isMatch('a', 'a*(z)')); // true console.log(pm.isMatch('az', 'a*(z)')); // true console.log(pm.isMatch('azzz', 'a*(z)')); // true // +(pattern) matches ONE or more of "pattern" console.log(pm.isMatch('a', 'a*(z)')); // true console.log(pm.isMatch('az', 'a*(z)')); // true console.log(pm.isMatch('azzz', 'a*(z)')); // true // supports multiple extglobs console.log(pm.isMatch('foo.bar', '!(foo).!(bar)')); // false // supports nested extglobs console.log(pm.isMatch('foo.bar', '!(!(foo)).!(!(bar))')); // true ``` #### POSIX brackets POSIX classes are disabled by default. Enable this feature by setting the `posix` option to true. **Enable POSIX bracket support** ```js console.log(pm.makeRe('[[:word:]]+', { posix: true })); //=> /^(?:(?=.)[A-Za-z0-9_]+\/?)$/ ``` **Supported POSIX classes** The following named POSIX bracket expressions are supported: * `[:alnum:]` - Alphanumeric characters, equ `[a-zA-Z0-9]` * `[:alpha:]` - Alphabetical characters, equivalent to `[a-zA-Z]`. * `[:ascii:]` - ASCII characters, equivalent to `[\\x00-\\x7F]`. * `[:blank:]` - Space and tab characters, equivalent to `[ \\t]`. * `[:cntrl:]` - Control characters, equivalent to `[\\x00-\\x1F\\x7F]`. * `[:digit:]` - Numerical digits, equivalent to `[0-9]`. * `[:graph:]` - Graph characters, equivalent to `[\\x21-\\x7E]`. * `[:lower:]` - Lowercase letters, equivalent to `[a-z]`. * `[:print:]` - Print characters, equivalent to `[\\x20-\\x7E ]`. * `[:punct:]` - Punctuation and symbols, equivalent to `[\\-!"#$%&\'()\\*+,./:;<=>?@[\\]^_`{|}~]`. * `[:space:]` - Extended space characters, equivalent to `[ \\t\\r\\n\\v\\f]`. * `[:upper:]` - Uppercase letters, equivalent to `[A-Z]`. * `[:word:]` - Word characters (letters, numbers and underscores), equivalent to `[A-Za-z0-9_]`. * `[:xdigit:]` - Hexadecimal digits, equivalent to `[A-Fa-f0-9]`. See the [Bash Reference Manual](https://www.gnu.org/software/bash/manual/html_node/Pattern-Matching.html) for more information. ### Braces Picomatch does not do brace expansion. For [brace expansion](https://www.gnu.org/software/bash/manual/html_node/Brace-Expansion.html) and advanced matching with braces, use [micromatch](https://github.com/micromatch/micromatch) instead. Picomatch has very basic support for braces. ### Matching special characters as literals If you wish to match the following special characters in a filepath, and you want to use these characters in your glob pattern, they must be escaped with backslashes or quotes: **Special Characters** Some characters that are used for matching in regular expressions are also regarded as valid file path characters on some platforms. To match any of the following characters as literals: `$^*+?()[] Examples: ```js console.log(pm.makeRe('foo/bar \\(1\\)')); console.log(pm.makeRe('foo/bar \\(1\\)')); ``` <br> <br> ## Library Comparisons The following table shows which features are supported by [minimatch](https://github.com/isaacs/minimatch), [micromatch](https://github.com/micromatch/micromatch), [picomatch](https://github.com/micromatch/picomatch), [nanomatch](https://github.com/micromatch/nanomatch), [extglob](https://github.com/micromatch/extglob), [braces](https://github.com/micromatch/braces), and [expand-brackets](https://github.com/micromatch/expand-brackets). | **Feature** | `minimatch` | `micromatch` | `picomatch` | `nanomatch` | `extglob` | `braces` | `expand-brackets` | | --- | --- | --- | --- | --- | --- | --- | --- | | Wildcard matching (`*?+`) | ✔ | ✔ | ✔ | ✔ | - | - | - | | Advancing globbing | ✔ | ✔ | ✔ | - | - | - | - | | Brace _matching_ | ✔ | ✔ | ✔ | - | - | ✔ | - | | Brace _expansion_ | ✔ | ✔ | - | - | - | ✔ | - | | Extglobs | partial | ✔ | ✔ | - | ✔ | - | - | | Posix brackets | - | ✔ | ✔ | - | - | - | ✔ | | Regular expression syntax | - | ✔ | ✔ | ✔ | ✔ | - | ✔ | | File system operations | - | - | - | - | - | - | - | <br> <br> ## Benchmarks Performance comparison of picomatch and minimatch. ``` # .makeRe star picomatch x 1,993,050 ops/sec ±0.51% (91 runs sampled) minimatch x 627,206 ops/sec ±1.96% (87 runs sampled)) # .makeRe star; dot=true picomatch x 1,436,640 ops/sec ±0.62% (91 runs sampled) minimatch x 525,876 ops/sec ±0.60% (88 runs sampled) # .makeRe globstar picomatch x 1,592,742 ops/sec ±0.42% (90 runs sampled) minimatch x 962,043 ops/sec ±1.76% (91 runs sampled)d) # .makeRe globstars picomatch x 1,615,199 ops/sec ±0.35% (94 runs sampled) minimatch x 477,179 ops/sec ±1.33% (91 runs sampled) # .makeRe with leading star picomatch x 1,220,856 ops/sec ±0.40% (92 runs sampled) minimatch x 453,564 ops/sec ±1.43% (94 runs sampled) # .makeRe - basic braces picomatch x 392,067 ops/sec ±0.70% (90 runs sampled) minimatch x 99,532 ops/sec ±2.03% (87 runs sampled)) ``` <br> <br> ## Philosophies The goal of this library is to be blazing fast, without compromising on accuracy. **Accuracy** The number one of goal of this library is accuracy. However, it's not unusual for different glob implementations to have different rules for matching behavior, even with simple wildcard matching. It gets increasingly more complicated when combinations of different features are combined, like when extglobs are combined with globstars, braces, slashes, and so on: `!(**/{a,b,*/c})`. Thus, given that there is no canonical glob specification to use as a single source of truth when differences of opinion arise regarding behavior, sometimes we have to implement our best judgement and rely on feedback from users to make improvements. **Performance** Although this library performs well in benchmarks, and in most cases it's faster than other popular libraries we benchmarked against, we will always choose accuracy over performance. It's not helpful to anyone if our library is faster at returning the wrong answer. <br> <br> ## About <details> <summary><strong>Contributing</strong></summary> Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). Please read the [contributing guide](.github/contributing.md) for advice on opening issues, pull requests, and coding standards. </details> <details> <summary><strong>Running Tests</strong></summary> Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh npm install && npm test ``` </details> <details> <summary><strong>Building docs</strong></summary> _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh npm install -g verbose/verb#dev verb-generate-readme && verb ``` </details> ### Author **Jon Schlinkert** * [GitHub Profile](https://github.com/jonschlinkert) * [Twitter Profile](https://twitter.com/jonschlinkert) * [LinkedIn Profile](https://linkedin.com/in/jonschlinkert) ### License Copyright © 2017-present, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT License](LICENSE). # near-sdk-core This package contain a convenient interface for interacting with NEAR's host runtime. To see the functions that are provided by the host node see [`env.ts`](./assembly/env/env.ts). text-encoding-utf-8 ============== This is a **partial** polyfill for the [Encoding Living Standard](https://encoding.spec.whatwg.org/) API for the Web, allowing encoding and decoding of textual data to and from Typed Array buffers for binary data in JavaScript. This is fork of [text-encoding](https://github.com/inexorabletash/text-encoding) that **only** support **UTF-8**. Basic examples and tests are included. ### Install ### There are a few ways you can get the `text-encoding-utf-8` library. #### Node #### `text-encoding-utf-8` is on `npm`. Simply run: ```js npm install text-encoding-utf-8 ``` Or add it to your `package.json` dependencies. ### HTML Page Usage ### ```html <script src="encoding.js"></script> ``` ### API Overview ### Basic Usage ```js var uint8array = TextEncoder(encoding).encode(string); var string = TextDecoder(encoding).decode(uint8array); ``` Streaming Decode ```js var string = "", decoder = TextDecoder(encoding), buffer; while (buffer = next_chunk()) { string += decoder.decode(buffer, {stream:true}); } string += decoder.decode(); // finish the stream ``` ### Encodings ### Only `utf-8` and `UTF-8` are supported. ### Non-Standard Behavior ### Only `utf-8` and `UTF-8` are supported. ### Motivation Binary size matters, especially on a mobile phone. Safari on iOS does not support TextDecoder or TextEncoder. # <img src="./logo.png" alt="bn.js" width="160" height="160" /> > BigNum in pure javascript [](http://travis-ci.org/indutny/bn.js) ## Install `npm install --save bn.js` ## Usage ```js const BN = require('bn.js'); var a = new BN('dead', 16); var b = new BN('101010', 2); var res = a.add(b); console.log(res.toString(10)); // 57047 ``` **Note**: decimals are not supported in this library. ## Notation ### Prefixes There are several prefixes to instructions that affect the way the work. Here is the list of them in the order of appearance in the function name: * `i` - perform operation in-place, storing the result in the host object (on which the method was invoked). Might be used to avoid number allocation costs * `u` - unsigned, ignore the sign of operands when performing operation, or always return positive value. Second case applies to reduction operations like `mod()`. In such cases if the result will be negative - modulo will be added to the result to make it positive ### Postfixes * `n` - the argument of the function must be a plain JavaScript Number. Decimals are not supported. * `rn` - both argument and return value of the function are plain JavaScript Numbers. Decimals are not supported. ### Examples * `a.iadd(b)` - perform addition on `a` and `b`, storing the result in `a` * `a.umod(b)` - reduce `a` modulo `b`, returning positive value * `a.iushln(13)` - shift bits of `a` left by 13 ## Instructions Prefixes/postfixes are put in parens at the of the line. `endian` - could be either `le` (little-endian) or `be` (big-endian). ### Utilities * `a.clone()` - clone number * `a.toString(base, length)` - convert to base-string and pad with zeroes * `a.toNumber()` - convert to Javascript Number (limited to 53 bits) * `a.toJSON()` - convert to JSON compatible hex string (alias of `toString(16)`) * `a.toArray(endian, length)` - convert to byte `Array`, and optionally zero pad to length, throwing if already exceeding * `a.toArrayLike(type, endian, length)` - convert to an instance of `type`, which must behave like an `Array` * `a.toBuffer(endian, length)` - convert to Node.js Buffer (if available). For compatibility with browserify and similar tools, use this instead: `a.toArrayLike(Buffer, endian, length)` * `a.bitLength()` - get number of bits occupied * `a.zeroBits()` - return number of less-significant consequent zero bits (example: `1010000` has 4 zero bits) * `a.byteLength()` - return number of bytes occupied * `a.isNeg()` - true if the number is negative * `a.isEven()` - no comments * `a.isOdd()` - no comments * `a.isZero()` - no comments * `a.cmp(b)` - compare numbers and return `-1` (a `<` b), `0` (a `==` b), or `1` (a `>` b) depending on the comparison result (`ucmp`, `cmpn`) * `a.lt(b)` - `a` less than `b` (`n`) * `a.lte(b)` - `a` less than or equals `b` (`n`) * `a.gt(b)` - `a` greater than `b` (`n`) * `a.gte(b)` - `a` greater than or equals `b` (`n`) * `a.eq(b)` - `a` equals `b` (`n`) * `a.toTwos(width)` - convert to two's complement representation, where `width` is bit width * `a.fromTwos(width)` - convert from two's complement representation, where `width` is the bit width * `BN.isBN(object)` - returns true if the supplied `object` is a BN.js instance * `BN.max(a, b)` - return `a` if `a` bigger than `b` * `BN.min(a, b)` - return `a` if `a` less than `b` ### Arithmetics * `a.neg()` - negate sign (`i`) * `a.abs()` - absolute value (`i`) * `a.add(b)` - addition (`i`, `n`, `in`) * `a.sub(b)` - subtraction (`i`, `n`, `in`) * `a.mul(b)` - multiply (`i`, `n`, `in`) * `a.sqr()` - square (`i`) * `a.pow(b)` - raise `a` to the power of `b` * `a.div(b)` - divide (`divn`, `idivn`) * `a.mod(b)` - reduct (`u`, `n`) (but no `umodn`) * `a.divmod(b)` - quotient and modulus obtained by dividing * `a.divRound(b)` - rounded division ### Bit operations * `a.or(b)` - or (`i`, `u`, `iu`) * `a.and(b)` - and (`i`, `u`, `iu`, `andln`) (NOTE: `andln` is going to be replaced with `andn` in future) * `a.xor(b)` - xor (`i`, `u`, `iu`) * `a.setn(b, value)` - set specified bit to `value` * `a.shln(b)` - shift left (`i`, `u`, `iu`) * `a.shrn(b)` - shift right (`i`, `u`, `iu`) * `a.testn(b)` - test if specified bit is set * `a.maskn(b)` - clear bits with indexes higher or equal to `b` (`i`) * `a.bincn(b)` - add `1 << b` to the number * `a.notn(w)` - not (for the width specified by `w`) (`i`) ### Reduction * `a.gcd(b)` - GCD * `a.egcd(b)` - Extended GCD results (`{ a: ..., b: ..., gcd: ... }`) * `a.invm(b)` - inverse `a` modulo `b` ## Fast reduction When doing lots of reductions using the same modulo, it might be beneficial to use some tricks: like [Montgomery multiplication][0], or using special algorithm for [Mersenne Prime][1]. ### Reduction context To enable this tricks one should create a reduction context: ```js var red = BN.red(num); ``` where `num` is just a BN instance. Or: ```js var red = BN.red(primeName); ``` Where `primeName` is either of these [Mersenne Primes][1]: * `'k256'` * `'p224'` * `'p192'` * `'p25519'` Or: ```js var red = BN.mont(num); ``` To reduce numbers with [Montgomery trick][0]. `.mont()` is generally faster than `.red(num)`, but slower than `BN.red(primeName)`. ### Converting numbers Before performing anything in reduction context - numbers should be converted to it. Usually, this means that one should: * Convert inputs to reducted ones * Operate on them in reduction context * Convert outputs back from the reduction context Here is how one may convert numbers to `red`: ```js var redA = a.toRed(red); ``` Where `red` is a reduction context created using instructions above Here is how to convert them back: ```js var a = redA.fromRed(); ``` ### Red instructions Most of the instructions from the very start of this readme have their counterparts in red context: * `a.redAdd(b)`, `a.redIAdd(b)` * `a.redSub(b)`, `a.redISub(b)` * `a.redShl(num)` * `a.redMul(b)`, `a.redIMul(b)` * `a.redSqr()`, `a.redISqr()` * `a.redSqrt()` - square root modulo reduction context's prime * `a.redInvm()` - modular inverse of the number * `a.redNeg()` * `a.redPow(b)` - modular exponentiation ### Number Size Optimized for elliptic curves that work with 256-bit numbers. There is no limitation on the size of the numbers. ## LICENSE This software is licensed under the MIT License. [0]: https://en.wikipedia.org/wiki/Montgomery_modular_multiplication [1]: https://en.wikipedia.org/wiki/Mersenne_prime # y18n [![NPM version][npm-image]][npm-url] [![js-standard-style][standard-image]][standard-url] [](https://conventionalcommits.org) The bare-bones internationalization library used by yargs. Inspired by [i18n](https://www.npmjs.com/package/i18n). ## Examples _simple string translation:_ ```js const __ = require('y18n')().__; console.log(__('my awesome string %s', 'foo')); ``` output: `my awesome string foo` _using tagged template literals_ ```js const __ = require('y18n')().__; const str = 'foo'; console.log(__`my awesome string ${str}`); ``` output: `my awesome string foo` _pluralization support:_ ```js const __n = require('y18n')().__n; console.log(__n('one fish %s', '%d fishes %s', 2, 'foo')); ``` output: `2 fishes foo` ## Deno Example As of `v5` `y18n` supports [Deno](https://github.com/denoland/deno): ```typescript import y18n from "https://deno.land/x/y18n/deno.ts"; const __ = y18n({ locale: 'pirate', directory: './test/locales' }).__ console.info(__`Hi, ${'Ben'} ${'Coe'}!`) ``` You will need to run with `--allow-read` to load alternative locales. ## JSON Language Files The JSON language files should be stored in a `./locales` folder. File names correspond to locales, e.g., `en.json`, `pirate.json`. When strings are observed for the first time they will be added to the JSON file corresponding to the current locale. ## Methods ### require('y18n')(config) Create an instance of y18n with the config provided, options include: * `directory`: the locale directory, default `./locales`. * `updateFiles`: should newly observed strings be updated in file, default `true`. * `locale`: what locale should be used. * `fallbackToLanguage`: should fallback to a language-only file (e.g. `en.json`) be allowed if a file matching the locale does not exist (e.g. `en_US.json`), default `true`. ### y18n.\_\_(str, arg, arg, arg) Print a localized string, `%s` will be replaced with `arg`s. This function can also be used as a tag for a template literal. You can use it like this: <code>__&#96;hello ${'world'}&#96;</code>. This will be equivalent to `__('hello %s', 'world')`. ### y18n.\_\_n(singularString, pluralString, count, arg, arg, arg) Print a localized string with appropriate pluralization. If `%d` is provided in the string, the `count` will replace this placeholder. ### y18n.setLocale(str) Set the current locale being used. ### y18n.getLocale() What locale is currently being used? ### y18n.updateLocale(obj) Update the current locale with the key value pairs in `obj`. ## Supported Node.js Versions Libraries in this ecosystem make a best effort to track [Node.js' release schedule](https://nodejs.org/en/about/releases/). Here's [a post on why we think this is important](https://medium.com/the-node-js-collection/maintainers-should-consider-following-node-js-release-schedule-ab08ed4de71a). ## License ISC [npm-url]: https://npmjs.org/package/y18n [npm-image]: https://img.shields.io/npm/v/y18n.svg [standard-image]: https://img.shields.io/badge/code%20style-standard-brightgreen.svg [standard-url]: https://github.com/feross/standard # tr46.js > An implementation of the [Unicode TR46 specification](http://unicode.org/reports/tr46/). ## Installation [Node.js](http://nodejs.org) `>= 6` is required. To install, type this at the command line: ```shell npm install tr46 ``` ## API ### `toASCII(domainName[, options])` Converts a string of Unicode symbols to a case-folded Punycode string of ASCII symbols. Available options: * [`checkBidi`](#checkBidi) * [`checkHyphens`](#checkHyphens) * [`checkJoiners`](#checkJoiners) * [`processingOption`](#processingOption) * [`useSTD3ASCIIRules`](#useSTD3ASCIIRules) * [`verifyDNSLength`](#verifyDNSLength) ### `toUnicode(domainName[, options])` Converts a case-folded Punycode string of ASCII symbols to a string of Unicode symbols. Available options: * [`checkBidi`](#checkBidi) * [`checkHyphens`](#checkHyphens) * [`checkJoiners`](#checkJoiners) * [`useSTD3ASCIIRules`](#useSTD3ASCIIRules) ## Options ### `checkBidi` Type: `Boolean` Default value: `false` When set to `true`, any bi-directional text within the input will be checked for validation. ### `checkHyphens` Type: `Boolean` Default value: `false` When set to `true`, the positions of any hyphen characters within the input will be checked for validation. ### `checkJoiners` Type: `Boolean` Default value: `false` When set to `true`, any word joiner characters within the input will be checked for validation. ### `processingOption` Type: `String` Default value: `"nontransitional"` When set to `"transitional"`, symbols within the input will be validated according to the older IDNA2003 protocol. When set to `"nontransitional"`, the current IDNA2008 protocol will be used. ### `useSTD3ASCIIRules` Type: `Boolean` Default value: `false` When set to `true`, input will be validated according to [STD3 Rules](http://unicode.org/reports/tr46/#STD3_Rules). ### `verifyDNSLength` Type: `Boolean` Default value: `false` When set to `true`, the length of each DNS label within the input will be checked for validation. USB Library for Node.JS =============================== [](https://github.com/node-usb/node-usb/actions) Node.JS library for communicating with USB devices in JavaScript / CoffeeScript. This is a refactoring / rewrite of Christopher Klein's [node-usb](https://github.com/schakko/node-usb). The API is not compatible (hopefully you find it an improvement). It's based entirely on libusb's asynchronous API for better efficiency, and provides a stream API for continuously streaming data or events. Installation ============ Libusb is included as a submodule. On Linux, you'll need libudev to build libusb. On Ubuntu/Debian: `sudo apt-get install build-essential libudev-dev` Then, just run npm install usb to install from npm. See the bottom of this page for instructions for building from a git checkout. ### Windows Use [Zadig](http://zadig.akeo.ie/) to install the WinUSB driver for your USB device. Otherwise you will get `LIBUSB_ERROR_NOT_SUPPORTED` when attempting to open devices. API === var usb = require('usb') usb --- Top-level object. ### usb.getDeviceList() Return a list of `Device` objects for the USB devices attached to the system. ### usb.findByIds(vid, pid) Convenience method to get the first device with the specified VID and PID, or `undefined` if no such device is present. ### usb.LIBUSB_* Constant properties from libusb ### usb.setDebugLevel(level : int) Set the libusb debug level (between 0 and 4) Device ------ Represents a USB device. ### .busNumber Integer USB device number ### .deviceAddress Integer USB device address ### .portNumbers Array containing the USB device port numbers, or `undefined` if not supported on this platform. ### .deviceDescriptor Object with properties for the fields of the device descriptor: - bLength - bDescriptorType - bcdUSB - bDeviceClass - bDeviceSubClass - bDeviceProtocol - bMaxPacketSize0 - idVendor - idProduct - bcdDevice - iManufacturer - iProduct - iSerialNumber - bNumConfigurations ### .configDescriptor Object with properties for the fields of the configuration descriptor: - bLength - bDescriptorType - wTotalLength - bNumInterfaces - bConfigurationValue - iConfiguration - bmAttributes - bMaxPower - extra (Buffer containing any extra data or additional descriptors) ### .allConfigDescriptors Contains all config descriptors of the device (same structure as .configDescriptor above) ### .parent Contains the parent of the device, such as a hub. If there is no parent this property is set to `null`. ### .open() Open the device. All methods below require the device to be open before use. ### .close() Close the device. ### .controlTransfer(bmRequestType, bRequest, wValue, wIndex, data_or_length, callback(error, data)) Perform a control transfer with `libusb_control_transfer`. Parameter `data_or_length` can be a integer length for an IN transfer, or a Buffer for an out transfer. The type must match the direction specified in the MSB of bmRequestType. The `data` parameter of the callback is always undefined for OUT transfers, or will be passed a Buffer for IN transfers. A [package is available to calculate bmRequestType](https://www.npmjs.com/package/bmrequesttype) if needed. ### .setConfiguration(id, callback(error)) Set the device configuration to something other than the default (0). To use this, first call `.open(false)` (which tells it not to auto configure), then before claiming an interface, call this method. ### .getStringDescriptor(index, callback(error, data)) Perform a control transfer to retrieve a string descriptor ### .getBosDescriptor(callback(error, bosDescriptor)) Perform a control transfer to retrieve an object with properties for the fields of the Binary Object Store descriptor: - bLength - bDescriptorType - wTotalLength - bNumDeviceCaps ### .getCapabilities(callback(error, capabilities)) Retrieve a list of Capability objects for the Binary Object Store capabilities of the device. ### .interface(interface) Return the interface with the specified interface number. ### .interfaces List of Interface objects for the interfaces of the default configuration of the device. ### .timeout Timeout in milliseconds to use for control transfers. ### .reset(callback(error)) Performs a reset of the device. Callback is called when complete. Interface --------- ### .endpoint(address) Return the InEndpoint or OutEndpoint with the specified address. ### .endpoints List of endpoints on this interface: InEndpoint and OutEndpoint objects. ### .interface Integer interface number. ### .altSetting Integer alternate setting number. ### .setAltSetting(altSetting, callback(error)) Sets the alternate setting. It updates the `interface.endpoints` array to reflect the endpoints found in the alternate setting. ### .claim() Claims the interface. This method must be called before using any endpoints of this interface. ### .release([closeEndpoints], callback(error)) Releases the interface and resets the alternate setting. Calls callback when complete. It is an error to release an interface with pending transfers. If the optional closeEndpoints parameter is true, any active endpoint streams are stopped (see `Endpoint.stopStream`), and the interface is released after the stream transfers are cancelled. Transfers submitted individually with `Endpoint.transfer` are not affected by this parameter. ### .isKernelDriverActive() Returns `false` if a kernel driver is not active; `true` if active. ### .detachKernelDriver() Detaches the kernel driver from the interface. ### .attachKernelDriver() Re-attaches the kernel driver for the interface. ### .descriptor Object with fields from the interface descriptor -- see libusb documentation or USB spec. - bLength - bDescriptorType - bInterfaceNumber - bAlternateSetting - bNumEndpoints - bInterfaceClass - bInterfaceSubClass - bInterfaceProtocol - iInterface - extra (Buffer containing any extra data or additional descriptors) Capability --------- ### .type Integer capability type. ### .data Buffer capability data. ### .descriptor Object with fields from the capability descriptor -- see libusb documentation or USB spec. - bLength - bDescriptorType - bDevCapabilityType Endpoint -------- Common base for InEndpoint and OutEndpoint, see below. ### .direction Endpoint direction: `"in"` or `"out"`. ### .transferType Endpoint type: `usb.LIBUSB_TRANSFER_TYPE_BULK`, `usb.LIBUSB_TRANSFER_TYPE_INTERRUPT`, or `usb.LIBUSB_TRANSFER_TYPE_ISOCHRONOUS`. ### .descriptor Object with fields from the endpoint descriptor -- see libusb documentation or USB spec. - bLength - bDescriptorType - bEndpointAddress - bmAttributes - wMaxPacketSize - bInterval - bRefresh - bSynchAddress - extra (Buffer containing any extra data or additional descriptors) ### .timeout Sets the timeout in milliseconds for transfers on this endpoint. The default, `0`, is infinite timeout. ### .clearHalt(callback(error)) Clear the halt/stall condition for this endpoint. InEndpoint ---------- Endpoints in the IN direction (device->PC) have this type. ### .transfer(length, callback(error, data)) Perform a transfer to read data from the endpoint. If length is greater than maxPacketSize, libusb will automatically split the transfer in multiple packets, and you will receive one callback with all data once all packets are complete. `this` in the callback is the InEndpoint object. ### .startPoll(nTransfers=3, transferSize=maxPacketSize) Start polling the endpoint. The library will keep `nTransfers` transfers of size `transferSize` pending in the kernel at all times to ensure continuous data flow. This is handled by the libusb event thread, so it continues even if the Node v8 thread is busy. The `data` and `error` events are emitted as transfers complete. ### .stopPoll(cb) Stop polling. Further data may still be received. The `end` event is emitted and the callback is called once all transfers have completed or canceled. ### Event: data(data : Buffer) Emitted with data received by the polling transfers ### Event: error(error) Emitted when polling encounters an error. All in flight transfers will be automatically canceled and no further polling will be done. You have to wait for the `end` event before you can start polling again. ### Event: end Emitted when polling has been canceled OutEndpoint ----------- Endpoints in the OUT direction (PC->device) have this type. ### .transfer(data, callback(error)) Perform a transfer to write `data` to the endpoint. If length is greater than maxPacketSize, libusb will automatically split the transfer in multiple packets, and you will receive one callback once all packets are complete. `this` in the callback is the OutEndpoint object. ### Event: error(error) Emitted when the stream encounters an error. ### Event: end Emitted when the stream has been stopped and all pending requests have been completed. UsbDetection ------------ ### usb.on('attach', function(device) { ... }); Attaches a callback to plugging in a `device`. ### usb.on('detach', function(device) { ... }); Attaches a callback to unplugging a `device`. ### usb.refHotplugEvents(); Restore (re-reference) the hotplug events unreferenced by `unrefHotplugEvents()` ### usb.unrefHotplugEvents(); Listening to events will prevent the process to exit. By calling this function, hotplug events will be unreferenced by the event loop, allowing the process to exit even when listening for the `attach` and `detach` events. Development and testing ======================= To build from git: git clone --recursive https://github.com/node-usb/node-usb.git cd node-usb npm install To execute the unit tests, [CoffeeScript](http://coffeescript.org) is required. Run npm test Some tests require an [attached STM32F103 Microprocessor USB device with specific firmware](https://github.com/thegecko/node-usb-test-firmware). npm run --silent full-test npm run --silent valgrind Limitations =========== Does not support: - Configurations other than the default one - Isochronous transfers License ======= MIT Note that the compiled Node extension includes Libusb, and is thus subject to the LGPL. # homedir-polyfill [](https://www.npmjs.com/package/homedir-polyfill) [](https://npmjs.org/package/homedir-polyfill) [](https://npmjs.org/package/homedir-polyfill) [](https://travis-ci.org/doowb/homedir-polyfill) [](https://ci.appveyor.com/project/doowb/homedir-polyfill) > Node.js os.homedir polyfill for older versions of node.js. Please consider following this project's author, [Brian Woodward](https://github.com/doowb), and consider starring the project to show your :heart: and support. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save homedir-polyfill ``` ## Usage ```js var homedir = require('homedir-polyfill'); console.log(homedir()); //=> /Users/doowb ``` ## Reasoning This library is a polyfill for the [node.js os.homedir](https://nodejs.org/api/os.html#os_os_homedir) method found in modern versions of node.js. This implementation tries to follow the implementation found in `libuv` by finding the current user using the `process.geteuid()` method and the `/etc/passwd` file. This should usually work in a linux environment, but will also fallback to looking at user specific environment variables to build the user's home directory if neccessary. Since `/etc/passwd` is not available on windows platforms, this implementation will use environment variables to find the home directory. In modern versions of node.js, [os.homedir](https://nodejs.org/api/os.html#os_os_homedir) is used. ## About <details> <summary><strong>Contributing</strong></summary> Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). Please read the [contributing guide](contributing.md) for advice on opening issues, pull requests, and coding standards. </details> <details> <summary><strong>Running Tests</strong></summary> Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` </details> <details> <summary><strong>Building docs</strong></summary> _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` </details> ### Related projects You might also be interested in these projects: [parse-passwd](https://www.npmjs.com/package/parse-passwd): Parse a passwd file into a list of users. | [homepage](https://github.com/doowb/parse-passwd "Parse a passwd file into a list of users.") ### Contributors | **Commits** | **Contributor** | | --- | --- | | 19 | [doowb](https://github.com/doowb) | | 2 | [martinheidegger](https://github.com/martinheidegger) | ### Author **Brian Woodward** * [GitHub Profile](https://github.com/doowb) * [Twitter Profile](https://twitter.com/doowb) * [LinkedIn Profile](https://linkedin.com/in/woodwardbrian) ### License Copyright © 2016 - 2019, [Brian Woodward](https://github.com/doowb). Released under the [MIT License](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.8.0, on February 21, 2019._ # axios // helpers The modules found in `helpers/` should be generic modules that are _not_ specific to the domain logic of axios. These modules could theoretically be published to npm on their own and consumed by other modules or apps. Some examples of generic modules are things like: - Browser polyfills - Managing cookies - Parsing HTTP headers # axios // helpers The modules found in `helpers/` should be generic modules that are _not_ specific to the domain logic of axios. These modules could theoretically be published to npm on their own and consumed by other modules or apps. Some examples of generic modules are things like: - Browser polyfills - Managing cookies - Parsing HTTP headers # simple-get [![travis][travis-image]][travis-url] [![npm][npm-image]][npm-url] [![downloads][downloads-image]][downloads-url] [![javascript style guide][standard-image]][standard-url] [travis-image]: https://img.shields.io/travis/feross/simple-get/master.svg [travis-url]: https://travis-ci.org/feross/simple-get [npm-image]: https://img.shields.io/npm/v/simple-get.svg [npm-url]: https://npmjs.org/package/simple-get [downloads-image]: https://img.shields.io/npm/dm/simple-get.svg [downloads-url]: https://npmjs.org/package/simple-get [standard-image]: https://img.shields.io/badge/code_style-standard-brightgreen.svg [standard-url]: https://standardjs.com ### Simplest way to make http get requests ## features This module is the lightest possible wrapper on top of node.js `http`, but supporting these essential features: - follows redirects - automatically handles gzip/deflate responses - supports HTTPS - supports specifying a timeout - supports convenience `url` key so there's no need to use `url.parse` on the url when specifying options - composes well with npm packages for features like cookies, proxies, form data, & OAuth All this in < 100 lines of code. ## install ``` npm install simple-get ``` ## usage Note, all these examples also work in the browser with [browserify](http://browserify.org/). ### simple GET request Doesn't get easier than this: ```js const get = require('simple-get') get('http://example.com', function (err, res) { if (err) throw err console.log(res.statusCode) // 200 res.pipe(process.stdout) // `res` is a stream }) ``` ### even simpler GET request If you just want the data, and don't want to deal with streams: ```js const get = require('simple-get') get.concat('http://example.com', function (err, res, data) { if (err) throw err console.log(res.statusCode) // 200 console.log(data) // Buffer('this is the server response') }) ``` ### POST, PUT, PATCH, HEAD, DELETE support For `POST`, call `get.post` or use option `{ method: 'POST' }`. ```js const get = require('simple-get') const opts = { url: 'http://example.com', body: 'this is the POST body' } get.post(opts, function (err, res) { if (err) throw err res.pipe(process.stdout) // `res` is a stream }) ``` #### A more complex example: ```js const get = require('simple-get') get({ url: 'http://example.com', method: 'POST', body: 'this is the POST body', // simple-get accepts all options that node.js `http` accepts // See: http://nodejs.org/api/http.html#http_http_request_options_callback headers: { 'user-agent': 'my cool app' } }, function (err, res) { if (err) throw err // All properties/methods from http.IncomingResponse are available, // even if a gunzip/inflate transform stream was returned. // See: http://nodejs.org/api/http.html#http_http_incomingmessage res.setTimeout(10000) console.log(res.headers) res.on('data', function (chunk) { // `chunk` is the decoded response, after it's been gunzipped or inflated // (if applicable) console.log('got a chunk of the response: ' + chunk) })) }) ``` ### JSON You can serialize/deserialize request and response with JSON: ```js const get = require('simple-get') const opts = { method: 'POST', url: 'http://example.com', body: { key: 'value' }, json: true } get.concat(opts, function (err, res, data) { if (err) throw err console.log(data.key) // `data` is an object }) ``` ### Timeout You can set a timeout (in milliseconds) on the request with the `timeout` option. If the request takes longer than `timeout` to complete, then the entire request will fail with an `Error`. ```js const get = require('simple-get') const opts = { url: 'http://example.com', timeout: 2000 // 2 second timeout } get(opts, function (err, res) {}) ``` ### One Quick Tip It's a good idea to set the `'user-agent'` header so the provider can more easily see how their resource is used. ```js const get = require('simple-get') const pkg = require('./package.json') get('http://example.com', { headers: { 'user-agent': `my-module/${pkg.version} (https://github.com/username/my-module)` } }) ``` ### Proxies You can use the [`tunnel`](https://github.com/koichik/node-tunnel) module with the `agent` option to work with proxies: ```js const get = require('simple-get') const tunnel = require('tunnel') const opts = { url: 'http://example.com', agent: tunnel.httpOverHttp({ proxy: { host: 'localhost' } }) } get(opts, function (err, res) {}) ``` ### Cookies You can use the [`cookie`](https://github.com/jshttp/cookie) module to include cookies in a request: ```js const get = require('simple-get') const cookie = require('cookie') const opts = { url: 'http://example.com', headers: { cookie: cookie.serialize('foo', 'bar') } } get(opts, function (err, res) {}) ``` ### Form data You can use the [`form-data`](https://github.com/form-data/form-data) module to create POST request with form data: ```js const fs = require('fs') const get = require('simple-get') const FormData = require('form-data') const form = new FormData() form.append('my_file', fs.createReadStream('/foo/bar.jpg')) const opts = { url: 'http://example.com', body: form } get.post(opts, function (err, res) {}) ``` #### Or, include `application/x-www-form-urlencoded` form data manually: ```js const get = require('simple-get') const opts = { url: 'http://example.com', form: { key: 'value' } } get.post(opts, function (err, res) {}) ``` ### Specifically disallowing redirects ```js const get = require('simple-get') const opts = { url: 'http://example.com/will-redirect-elsewhere', followRedirects: false } // res.statusCode will be 301, no error thrown get(opts, function (err, res) {}) ``` ### OAuth You can use the [`oauth-1.0a`](https://github.com/ddo/oauth-1.0a) module to create a signed OAuth request: ```js const get = require('simple-get') const crypto = require('crypto') const OAuth = require('oauth-1.0a') const oauth = OAuth({ consumer: { key: process.env.CONSUMER_KEY, secret: process.env.CONSUMER_SECRET }, signature_method: 'HMAC-SHA1', hash_function: (baseString, key) => crypto.createHmac('sha1', key).update(baseString).digest('base64') }) const token = { key: process.env.ACCESS_TOKEN, secret: process.env.ACCESS_TOKEN_SECRET } const url = 'https://api.twitter.com/1.1/statuses/home_timeline.json' const opts = { url: url, headers: oauth.toHeader(oauth.authorize({url, method: 'GET'}, token)), json: true } get(opts, function (err, res) {}) ``` ### Throttle requests You can use [limiter](https://github.com/jhurliman/node-rate-limiter) to throttle requests. This is useful when calling an API that is rate limited. ```js const simpleGet = require('simple-get') const RateLimiter = require('limiter').RateLimiter const limiter = new RateLimiter(1, 'second') const get = (opts, cb) => limiter.removeTokens(1, () => simpleGet(opts, cb)) get.concat = (opts, cb) => limiter.removeTokens(1, () => simpleGet.concat(opts, cb)) var opts = { url: 'http://example.com' } get.concat(opts, processResult) get.concat(opts, processResult) function processResult (err, res, data) { if (err) throw err console.log(data.toString()) } ``` ## license MIT. Copyright (c) [Feross Aboukhadijeh](http://feross.org). # jsdiff [](http://travis-ci.org/kpdecker/jsdiff) [](https://saucelabs.com/u/jsdiff) A javascript text differencing implementation. Based on the algorithm proposed in ["An O(ND) Difference Algorithm and its Variations" (Myers, 1986)](http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.4.6927). ## Installation ```bash npm install diff --save ``` ## API * `Diff.diffChars(oldStr, newStr[, options])` - diffs two blocks of text, comparing character by character. Returns a list of change objects (See below). Options * `ignoreCase`: `true` to ignore casing difference. Defaults to `false`. * `Diff.diffWords(oldStr, newStr[, options])` - diffs two blocks of text, comparing word by word, ignoring whitespace. Returns a list of change objects (See below). Options * `ignoreCase`: Same as in `diffChars`. * `Diff.diffWordsWithSpace(oldStr, newStr[, options])` - diffs two blocks of text, comparing word by word, treating whitespace as significant. Returns a list of change objects (See below). * `Diff.diffLines(oldStr, newStr[, options])` - diffs two blocks of text, comparing line by line. Options * `ignoreWhitespace`: `true` to ignore leading and trailing whitespace. This is the same as `diffTrimmedLines` * `newlineIsToken`: `true` to treat newline characters as separate tokens. This allows for changes to the newline structure to occur independently of the line content and to be treated as such. In general this is the more human friendly form of `diffLines` and `diffLines` is better suited for patches and other computer friendly output. Returns a list of change objects (See below). * `Diff.diffTrimmedLines(oldStr, newStr[, options])` - diffs two blocks of text, comparing line by line, ignoring leading and trailing whitespace. Returns a list of change objects (See below). * `Diff.diffSentences(oldStr, newStr[, options])` - diffs two blocks of text, comparing sentence by sentence. Returns a list of change objects (See below). * `Diff.diffCss(oldStr, newStr[, options])` - diffs two blocks of text, comparing CSS tokens. Returns a list of change objects (See below). * `Diff.diffJson(oldObj, newObj[, options])` - diffs two JSON objects, comparing the fields defined on each. The order of fields, etc does not matter in this comparison. Returns a list of change objects (See below). * `Diff.diffArrays(oldArr, newArr[, options])` - diffs two arrays, comparing each item for strict equality (===). Options * `comparator`: `function(left, right)` for custom equality checks Returns a list of change objects (See below). * `Diff.createTwoFilesPatch(oldFileName, newFileName, oldStr, newStr, oldHeader, newHeader)` - creates a unified diff patch. Parameters: * `oldFileName` : String to be output in the filename section of the patch for the removals * `newFileName` : String to be output in the filename section of the patch for the additions * `oldStr` : Original string value * `newStr` : New string value * `oldHeader` : Additional information to include in the old file header * `newHeader` : Additional information to include in the new file header * `options` : An object with options. Currently, only `context` is supported and describes how many lines of context should be included. * `Diff.createPatch(fileName, oldStr, newStr, oldHeader, newHeader)` - creates a unified diff patch. Just like Diff.createTwoFilesPatch, but with oldFileName being equal to newFileName. * `Diff.structuredPatch(oldFileName, newFileName, oldStr, newStr, oldHeader, newHeader, options)` - returns an object with an array of hunk objects. This method is similar to createTwoFilesPatch, but returns a data structure suitable for further processing. Parameters are the same as createTwoFilesPatch. The data structure returned may look like this: ```js { oldFileName: 'oldfile', newFileName: 'newfile', oldHeader: 'header1', newHeader: 'header2', hunks: [{ oldStart: 1, oldLines: 3, newStart: 1, newLines: 3, lines: [' line2', ' line3', '-line4', '+line5', '\\ No newline at end of file'], }] } ``` * `Diff.applyPatch(source, patch[, options])` - applies a unified diff patch. Return a string containing new version of provided data. `patch` may be a string diff or the output from the `parsePatch` or `structuredPatch` methods. The optional `options` object may have the following keys: - `fuzzFactor`: Number of lines that are allowed to differ before rejecting a patch. Defaults to 0. - `compareLine(lineNumber, line, operation, patchContent)`: Callback used to compare to given lines to determine if they should be considered equal when patching. Defaults to strict equality but may be overridden to provide fuzzier comparison. Should return false if the lines should be rejected. * `Diff.applyPatches(patch, options)` - applies one or more patches. This method will iterate over the contents of the patch and apply to data provided through callbacks. The general flow for each patch index is: - `options.loadFile(index, callback)` is called. The caller should then load the contents of the file and then pass that to the `callback(err, data)` callback. Passing an `err` will terminate further patch execution. - `options.patched(index, content, callback)` is called once the patch has been applied. `content` will be the return value from `applyPatch`. When it's ready, the caller should call `callback(err)` callback. Passing an `err` will terminate further patch execution. Once all patches have been applied or an error occurs, the `options.complete(err)` callback is made. * `Diff.parsePatch(diffStr)` - Parses a patch into structured data Return a JSON object representation of the a patch, suitable for use with the `applyPatch` method. This parses to the same structure returned by `Diff.structuredPatch`. * `convertChangesToXML(changes)` - converts a list of changes to a serialized XML format All methods above which accept the optional `callback` method will run in sync mode when that parameter is omitted and in async mode when supplied. This allows for larger diffs without blocking the event loop. This may be passed either directly as the final parameter or as the `callback` field in the `options` object. ### Change Objects Many of the methods above return change objects. These objects consist of the following fields: * `value`: Text content * `added`: True if the value was inserted into the new string * `removed`: True if the value was removed from the old string Note that some cases may omit a particular flag field. Comparison on the flag fields should always be done in a truthy or falsy manner. ## Examples Basic example in Node ```js require('colors'); const Diff = require('diff'); const one = 'beep boop'; const other = 'beep boob blah'; const diff = Diff.diffChars(one, other); diff.forEach((part) => { // green for additions, red for deletions // grey for common parts const color = part.added ? 'green' : part.removed ? 'red' : 'grey'; process.stderr.write(part.value[color]); }); console.log(); ``` Running the above program should yield <img src="images/node_example.png" alt="Node Example"> Basic example in a web page ```html <pre id="display"></pre> <script src="diff.js"></script> <script> const one = 'beep boop', other = 'beep boob blah', color = ''; let span = null; const diff = Diff.diffChars(one, other), display = document.getElementById('display'), fragment = document.createDocumentFragment(); diff.forEach((part) => { // green for additions, red for deletions // grey for common parts const color = part.added ? 'green' : part.removed ? 'red' : 'grey'; span = document.createElement('span'); span.style.color = color; span.appendChild(document .createTextNode(part.value)); fragment.appendChild(span); }); display.appendChild(fragment); </script> ``` Open the above .html file in a browser and you should see <img src="images/web_example.png" alt="Node Example"> **[Full online demo](http://kpdecker.github.com/jsdiff)** ## Compatibility [](https://saucelabs.com/u/jsdiff) jsdiff supports all ES3 environments with some known issues on IE8 and below. Under these browsers some diff algorithms such as word diff and others may fail due to lack of support for capturing groups in the `split` operation. ## License See [LICENSE](https://github.com/kpdecker/jsdiff/blob/master/LICENSE). util-deprecate ============== ### The Node.js `util.deprecate()` function with browser support In Node.js, this module simply re-exports the `util.deprecate()` function. In the web browser (i.e. via browserify), a browser-specific implementation of the `util.deprecate()` function is used. ## API A `deprecate()` function is the only thing exposed by this module. ``` javascript // setup: exports.foo = deprecate(foo, 'foo() is deprecated, use bar() instead'); // users see: foo(); // foo() is deprecated, use bar() instead foo(); foo(); ``` ## License (The MIT License) Copyright (c) 2014 Nathan Rajlich <nathan@tootallnate.net> Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. <p align="center"> <a href="https://assemblyscript.org" target="_blank" rel="noopener"><img width="100" src="https://avatars1.githubusercontent.com/u/28916798?s=200&v=4" alt="AssemblyScript logo"></a> </p> <p align="center"> <a href="https://github.com/AssemblyScript/assemblyscript/actions?query=workflow%3ATest"><img src="https://img.shields.io/github/workflow/status/AssemblyScript/assemblyscript/Test/master?label=test&logo=github" alt="Test status" /></a> <a href="https://github.com/AssemblyScript/assemblyscript/actions?query=workflow%3APublish"><img src="https://img.shields.io/github/workflow/status/AssemblyScript/assemblyscript/Publish/master?label=publish&logo=github" alt="Publish status" /></a> <a href="https://www.npmjs.com/package/assemblyscript"><img src="https://img.shields.io/npm/v/assemblyscript.svg?label=compiler&color=007acc&logo=npm" alt="npm compiler version" /></a> <a href="https://www.npmjs.com/package/@assemblyscript/loader"><img src="https://img.shields.io/npm/v/@assemblyscript/loader.svg?label=loader&color=007acc&logo=npm" alt="npm loader version" /></a> <a href="https://discord.gg/assemblyscript"><img src="https://img.shields.io/discord/721472913886281818.svg?label=&logo=discord&logoColor=ffffff&color=7389D8&labelColor=6A7EC2" alt="Discord online" /></a> </p> <p align="justify"><strong>AssemblyScript</strong> compiles a strict variant of <a href="http://www.typescriptlang.org">TypeScript</a> (basically JavaScript with types) to <a href="http://webassembly.org">WebAssembly</a> using <a href="https://github.com/WebAssembly/binaryen">Binaryen</a>. It generates lean and mean WebAssembly modules while being just an <code>npm install</code> away.</p> <h3 align="center"> <a href="https://assemblyscript.org">About</a> &nbsp;·&nbsp; <a href="https://assemblyscript.org/introduction.html">Introduction</a> &nbsp;·&nbsp; <a href="https://assemblyscript.org/quick-start.html">Quick&nbsp;start</a> &nbsp;·&nbsp; <a href="https://assemblyscript.org/examples.html">Examples</a> &nbsp;·&nbsp; <a href="https://assemblyscript.org/development.html">Development&nbsp;instructions</a> </h3> <br> <h2 align="center">Contributors</h2> <p align="center"> <a href="https://assemblyscript.org/#contributors"><img src="https://assemblyscript.org/contributors.svg" alt="Contributor logos" width="720" /></a> </p> <h2 align="center">Thanks to our sponsors!</h2> <p align="justify">Most of the core team members and most contributors do this open source work in their free time. If you use AssemblyScript for a serious task or plan to do so, and you'd like us to invest more time on it, <a href="https://opencollective.com/assemblyscript/donate" target="_blank" rel="noopener">please donate</a> to our <a href="https://opencollective.com/assemblyscript" target="_blank" rel="noopener">OpenCollective</a>. By sponsoring this project, your logo will show up below. Thank you so much for your support!</p> <p align="center"> <a href="https://assemblyscript.org/#sponsors"><img src="https://assemblyscript.org/sponsors.svg" alt="Sponsor logos" width="720" /></a> </p> node-fetch ========== [![npm version][npm-image]][npm-url] [![build status][travis-image]][travis-url] [![coverage status][codecov-image]][codecov-url] [![install size][install-size-image]][install-size-url] [![Discord][discord-image]][discord-url] A light-weight module that brings `window.fetch` to Node.js (We are looking for [v2 maintainers and collaborators](https://github.com/bitinn/node-fetch/issues/567)) [![Backers][opencollective-image]][opencollective-url] <!-- TOC --> - [Motivation](#motivation) - [Features](#features) - [Difference from client-side fetch](#difference-from-client-side-fetch) - [Installation](#installation) - [Loading and configuring the module](#loading-and-configuring-the-module) - [Common Usage](#common-usage) - [Plain text or HTML](#plain-text-or-html) - [JSON](#json) - [Simple Post](#simple-post) - [Post with JSON](#post-with-json) - [Post with form parameters](#post-with-form-parameters) - [Handling exceptions](#handling-exceptions) - [Handling client and server errors](#handling-client-and-server-errors) - [Advanced Usage](#advanced-usage) - [Streams](#streams) - [Buffer](#buffer) - [Accessing Headers and other Meta data](#accessing-headers-and-other-meta-data) - [Extract Set-Cookie Header](#extract-set-cookie-header) - [Post data using a file stream](#post-data-using-a-file-stream) - [Post with form-data (detect multipart)](#post-with-form-data-detect-multipart) - [Request cancellation with AbortSignal](#request-cancellation-with-abortsignal) - [API](#api) - [fetch(url[, options])](#fetchurl-options) - [Options](#options) - [Class: Request](#class-request) - [Class: Response](#class-response) - [Class: Headers](#class-headers) - [Interface: Body](#interface-body) - [Class: FetchError](#class-fetcherror) - [License](#license) - [Acknowledgement](#acknowledgement) <!-- /TOC --> ## Motivation Instead of implementing `XMLHttpRequest` in Node.js to run browser-specific [Fetch polyfill](https://github.com/github/fetch), why not go from native `http` to `fetch` API directly? Hence, `node-fetch`, minimal code for a `window.fetch` compatible API on Node.js runtime. See Matt Andrews' [isomorphic-fetch](https://github.com/matthew-andrews/isomorphic-fetch) or Leonardo Quixada's [cross-fetch](https://github.com/lquixada/cross-fetch) for isomorphic usage (exports `node-fetch` for server-side, `whatwg-fetch` for client-side). ## Features - Stay consistent with `window.fetch` API. - Make conscious trade-off when following [WHATWG fetch spec][whatwg-fetch] and [stream spec](https://streams.spec.whatwg.org/) implementation details, document known differences. - Use native promise but allow substituting it with [insert your favorite promise library]. - Use native Node streams for body on both request and response. - Decode content encoding (gzip/deflate) properly and convert string output (such as `res.text()` and `res.json()`) to UTF-8 automatically. - Useful extensions such as timeout, redirect limit, response size limit, [explicit errors](ERROR-HANDLING.md) for troubleshooting. ## Difference from client-side fetch - See [Known Differences](LIMITS.md) for details. - If you happen to use a missing feature that `window.fetch` offers, feel free to open an issue. - Pull requests are welcomed too! ## Installation Current stable release (`2.x`) ```sh $ npm install node-fetch ``` ## Loading and configuring the module We suggest you load the module via `require` until the stabilization of ES modules in node: ```js const fetch = require('node-fetch'); ``` If you are using a Promise library other than native, set it through `fetch.Promise`: ```js const Bluebird = require('bluebird'); fetch.Promise = Bluebird; ``` ## Common Usage NOTE: The documentation below is up-to-date with `2.x` releases; see the [`1.x` readme](https://github.com/bitinn/node-fetch/blob/1.x/README.md), [changelog](https://github.com/bitinn/node-fetch/blob/1.x/CHANGELOG.md) and [2.x upgrade guide](UPGRADE-GUIDE.md) for the differences. #### Plain text or HTML ```js fetch('https://github.com/') .then(res => res.text()) .then(body => console.log(body)); ``` #### JSON ```js fetch('https://api.github.com/users/github') .then(res => res.json()) .then(json => console.log(json)); ``` #### Simple Post ```js fetch('https://httpbin.org/post', { method: 'POST', body: 'a=1' }) .then(res => res.json()) // expecting a json response .then(json => console.log(json)); ``` #### Post with JSON ```js const body = { a: 1 }; fetch('https://httpbin.org/post', { method: 'post', body: JSON.stringify(body), headers: { 'Content-Type': 'application/json' }, }) .then(res => res.json()) .then(json => console.log(json)); ``` #### Post with form parameters `URLSearchParams` is available in Node.js as of v7.5.0. See [official documentation](https://nodejs.org/api/url.html#url_class_urlsearchparams) for more usage methods. NOTE: The `Content-Type` header is only set automatically to `x-www-form-urlencoded` when an instance of `URLSearchParams` is given as such: ```js const { URLSearchParams } = require('url'); const params = new URLSearchParams(); params.append('a', 1); fetch('https://httpbin.org/post', { method: 'POST', body: params }) .then(res => res.json()) .then(json => console.log(json)); ``` #### Handling exceptions NOTE: 3xx-5xx responses are *NOT* exceptions and should be handled in `then()`; see the next section for more information. Adding a catch to the fetch promise chain will catch *all* exceptions, such as errors originating from node core libraries, network errors and operational errors, which are instances of FetchError. See the [error handling document](ERROR-HANDLING.md) for more details. ```js fetch('https://domain.invalid/') .catch(err => console.error(err)); ``` #### Handling client and server errors It is common to create a helper function to check that the response contains no client (4xx) or server (5xx) error responses: ```js function checkStatus(res) { if (res.ok) { // res.status >= 200 && res.status < 300 return res; } else { throw MyCustomError(res.statusText); } } fetch('https://httpbin.org/status/400') .then(checkStatus) .then(res => console.log('will not get here...')) ``` ## Advanced Usage #### Streams The "Node.js way" is to use streams when possible: ```js fetch('https://assets-cdn.github.com/images/modules/logos_page/Octocat.png') .then(res => { const dest = fs.createWriteStream('./octocat.png'); res.body.pipe(dest); }); ``` #### Buffer If you prefer to cache binary data in full, use buffer(). (NOTE: `buffer()` is a `node-fetch`-only API) ```js const fileType = require('file-type'); fetch('https://assets-cdn.github.com/images/modules/logos_page/Octocat.png') .then(res => res.buffer()) .then(buffer => fileType(buffer)) .then(type => { /* ... */ }); ``` #### Accessing Headers and other Meta data ```js fetch('https://github.com/') .then(res => { console.log(res.ok); console.log(res.status); console.log(res.statusText); console.log(res.headers.raw()); console.log(res.headers.get('content-type')); }); ``` #### Extract Set-Cookie Header Unlike browsers, you can access raw `Set-Cookie` headers manually using `Headers.raw()`. This is a `node-fetch` only API. ```js fetch(url).then(res => { // returns an array of values, instead of a string of comma-separated values console.log(res.headers.raw()['set-cookie']); }); ``` #### Post data using a file stream ```js const { createReadStream } = require('fs'); const stream = createReadStream('input.txt'); fetch('https://httpbin.org/post', { method: 'POST', body: stream }) .then(res => res.json()) .then(json => console.log(json)); ``` #### Post with form-data (detect multipart) ```js const FormData = require('form-data'); const form = new FormData(); form.append('a', 1); fetch('https://httpbin.org/post', { method: 'POST', body: form }) .then(res => res.json()) .then(json => console.log(json)); // OR, using custom headers // NOTE: getHeaders() is non-standard API const form = new FormData(); form.append('a', 1); const options = { method: 'POST', body: form, headers: form.getHeaders() } fetch('https://httpbin.org/post', options) .then(res => res.json()) .then(json => console.log(json)); ``` #### Request cancellation with AbortSignal > NOTE: You may cancel streamed requests only on Node >= v8.0.0 You may cancel requests with `AbortController`. A suggested implementation is [`abort-controller`](https://www.npmjs.com/package/abort-controller). An example of timing out a request after 150ms could be achieved as the following: ```js import AbortController from 'abort-controller'; const controller = new AbortController(); const timeout = setTimeout( () => { controller.abort(); }, 150, ); fetch(url, { signal: controller.signal }) .then(res => res.json()) .then( data => { useData(data) }, err => { if (err.name === 'AbortError') { // request was aborted } }, ) .finally(() => { clearTimeout(timeout); }); ``` See [test cases](https://github.com/bitinn/node-fetch/blob/master/test/test.js) for more examples. ## API ### fetch(url[, options]) - `url` A string representing the URL for fetching - `options` [Options](#fetch-options) for the HTTP(S) request - Returns: <code>Promise&lt;[Response](#class-response)&gt;</code> Perform an HTTP(S) fetch. `url` should be an absolute url, such as `https://example.com/`. A path-relative URL (`/file/under/root`) or protocol-relative URL (`//can-be-http-or-https.com/`) will result in a rejected `Promise`. <a id="fetch-options"></a> ### Options The default values are shown after each option key. ```js { // These properties are part of the Fetch Standard method: 'GET', headers: {}, // request headers. format is the identical to that accepted by the Headers constructor (see below) body: null, // request body. can be null, a string, a Buffer, a Blob, or a Node.js Readable stream redirect: 'follow', // set to `manual` to extract redirect headers, `error` to reject redirect signal: null, // pass an instance of AbortSignal to optionally abort requests // The following properties are node-fetch extensions follow: 20, // maximum redirect count. 0 to not follow redirect timeout: 0, // req/res timeout in ms, it resets on redirect. 0 to disable (OS limit applies). Signal is recommended instead. compress: true, // support gzip/deflate content encoding. false to disable size: 0, // maximum response body size in bytes. 0 to disable agent: null // http(s).Agent instance or function that returns an instance (see below) } ``` ##### Default Headers If no values are set, the following request headers will be sent automatically: Header | Value ------------------- | -------------------------------------------------------- `Accept-Encoding` | `gzip,deflate` _(when `options.compress === true`)_ `Accept` | `*/*` `Connection` | `close` _(when no `options.agent` is present)_ `Content-Length` | _(automatically calculated, if possible)_ `Transfer-Encoding` | `chunked` _(when `req.body` is a stream)_ `User-Agent` | `node-fetch/1.0 (+https://github.com/bitinn/node-fetch)` Note: when `body` is a `Stream`, `Content-Length` is not set automatically. ##### Custom Agent The `agent` option allows you to specify networking related options which are out of the scope of Fetch, including and not limited to the following: - Support self-signed certificate - Use only IPv4 or IPv6 - Custom DNS Lookup See [`http.Agent`](https://nodejs.org/api/http.html#http_new_agent_options) for more information. In addition, the `agent` option accepts a function that returns `http`(s)`.Agent` instance given current [URL](https://nodejs.org/api/url.html), this is useful during a redirection chain across HTTP and HTTPS protocol. ```js const httpAgent = new http.Agent({ keepAlive: true }); const httpsAgent = new https.Agent({ keepAlive: true }); const options = { agent: function (_parsedURL) { if (_parsedURL.protocol == 'http:') { return httpAgent; } else { return httpsAgent; } } } ``` <a id="class-request"></a> ### Class: Request An HTTP(S) request containing information about URL, method, headers, and the body. This class implements the [Body](#iface-body) interface. Due to the nature of Node.js, the following properties are not implemented at this moment: - `type` - `destination` - `referrer` - `referrerPolicy` - `mode` - `credentials` - `cache` - `integrity` - `keepalive` The following node-fetch extension properties are provided: - `follow` - `compress` - `counter` - `agent` See [options](#fetch-options) for exact meaning of these extensions. #### new Request(input[, options]) <small>*(spec-compliant)*</small> - `input` A string representing a URL, or another `Request` (which will be cloned) - `options` [Options][#fetch-options] for the HTTP(S) request Constructs a new `Request` object. The constructor is identical to that in the [browser](https://developer.mozilla.org/en-US/docs/Web/API/Request/Request). In most cases, directly `fetch(url, options)` is simpler than creating a `Request` object. <a id="class-response"></a> ### Class: Response An HTTP(S) response. This class implements the [Body](#iface-body) interface. The following properties are not implemented in node-fetch at this moment: - `Response.error()` - `Response.redirect()` - `type` - `trailer` #### new Response([body[, options]]) <small>*(spec-compliant)*</small> - `body` A `String` or [`Readable` stream][node-readable] - `options` A [`ResponseInit`][response-init] options dictionary Constructs a new `Response` object. The constructor is identical to that in the [browser](https://developer.mozilla.org/en-US/docs/Web/API/Response/Response). Because Node.js does not implement service workers (for which this class was designed), one rarely has to construct a `Response` directly. #### response.ok <small>*(spec-compliant)*</small> Convenience property representing if the request ended normally. Will evaluate to true if the response status was greater than or equal to 200 but smaller than 300. #### response.redirected <small>*(spec-compliant)*</small> Convenience property representing if the request has been redirected at least once. Will evaluate to true if the internal redirect counter is greater than 0. <a id="class-headers"></a> ### Class: Headers This class allows manipulating and iterating over a set of HTTP headers. All methods specified in the [Fetch Standard][whatwg-fetch] are implemented. #### new Headers([init]) <small>*(spec-compliant)*</small> - `init` Optional argument to pre-fill the `Headers` object Construct a new `Headers` object. `init` can be either `null`, a `Headers` object, an key-value map object or any iterable object. ```js // Example adapted from https://fetch.spec.whatwg.org/#example-headers-class const meta = { 'Content-Type': 'text/xml', 'Breaking-Bad': '<3' }; const headers = new Headers(meta); // The above is equivalent to const meta = [ [ 'Content-Type', 'text/xml' ], [ 'Breaking-Bad', '<3' ] ]; const headers = new Headers(meta); // You can in fact use any iterable objects, like a Map or even another Headers const meta = new Map(); meta.set('Content-Type', 'text/xml'); meta.set('Breaking-Bad', '<3'); const headers = new Headers(meta); const copyOfHeaders = new Headers(headers); ``` <a id="iface-body"></a> ### Interface: Body `Body` is an abstract interface with methods that are applicable to both `Request` and `Response` classes. The following methods are not yet implemented in node-fetch at this moment: - `formData()` #### body.body <small>*(deviation from spec)*</small> * Node.js [`Readable` stream][node-readable] Data are encapsulated in the `Body` object. Note that while the [Fetch Standard][whatwg-fetch] requires the property to always be a WHATWG `ReadableStream`, in node-fetch it is a Node.js [`Readable` stream][node-readable]. #### body.bodyUsed <small>*(spec-compliant)*</small> * `Boolean` A boolean property for if this body has been consumed. Per the specs, a consumed body cannot be used again. #### body.arrayBuffer() #### body.blob() #### body.json() #### body.text() <small>*(spec-compliant)*</small> * Returns: <code>Promise</code> Consume the body and return a promise that will resolve to one of these formats. #### body.buffer() <small>*(node-fetch extension)*</small> * Returns: <code>Promise&lt;Buffer&gt;</code> Consume the body and return a promise that will resolve to a Buffer. #### body.textConverted() <small>*(node-fetch extension)*</small> * Returns: <code>Promise&lt;String&gt;</code> Identical to `body.text()`, except instead of always converting to UTF-8, encoding sniffing will be performed and text converted to UTF-8 if possible. (This API requires an optional dependency of the npm package [encoding](https://www.npmjs.com/package/encoding), which you need to install manually. `webpack` users may see [a warning message](https://github.com/bitinn/node-fetch/issues/412#issuecomment-379007792) due to this optional dependency.) <a id="class-fetcherror"></a> ### Class: FetchError <small>*(node-fetch extension)*</small> An operational error in the fetching process. See [ERROR-HANDLING.md][] for more info. <a id="class-aborterror"></a> ### Class: AbortError <small>*(node-fetch extension)*</small> An Error thrown when the request is aborted in response to an `AbortSignal`'s `abort` event. It has a `name` property of `AbortError`. See [ERROR-HANDLING.MD][] for more info. ## Acknowledgement Thanks to [github/fetch](https://github.com/github/fetch) for providing a solid implementation reference. `node-fetch` v1 was maintained by [@bitinn](https://github.com/bitinn); v2 was maintained by [@TimothyGu](https://github.com/timothygu), [@bitinn](https://github.com/bitinn) and [@jimmywarting](https://github.com/jimmywarting); v2 readme is written by [@jkantr](https://github.com/jkantr). ## License MIT [npm-image]: https://flat.badgen.net/npm/v/node-fetch [npm-url]: https://www.npmjs.com/package/node-fetch [travis-image]: https://flat.badgen.net/travis/bitinn/node-fetch [travis-url]: https://travis-ci.org/bitinn/node-fetch [codecov-image]: https://flat.badgen.net/codecov/c/github/bitinn/node-fetch/master [codecov-url]: https://codecov.io/gh/bitinn/node-fetch [install-size-image]: https://flat.badgen.net/packagephobia/install/node-fetch [install-size-url]: https://packagephobia.now.sh/result?p=node-fetch [discord-image]: https://img.shields.io/discord/619915844268326952?color=%237289DA&label=Discord&style=flat-square [discord-url]: https://discord.gg/Zxbndcm [opencollective-image]: https://opencollective.com/node-fetch/backers.svg [opencollective-url]: https://opencollective.com/node-fetch [whatwg-fetch]: https://fetch.spec.whatwg.org/ [response-init]: https://fetch.spec.whatwg.org/#responseinit [node-readable]: https://nodejs.org/api/stream.html#stream_readable_streams [mdn-headers]: https://developer.mozilla.org/en-US/docs/Web/API/Headers [LIMITS.md]: https://github.com/bitinn/node-fetch/blob/master/LIMITS.md [ERROR-HANDLING.md]: https://github.com/bitinn/node-fetch/blob/master/ERROR-HANDLING.md [UPGRADE-GUIDE.md]: https://github.com/bitinn/node-fetch/blob/master/UPGRADE-GUIDE.md # whatwg-url whatwg-url is a full implementation of the WHATWG [URL Standard](https://url.spec.whatwg.org/). It can be used standalone, but it also exposes a lot of the internal algorithms that are useful for integrating a URL parser into a project like [jsdom](https://github.com/tmpvar/jsdom). ## Current Status whatwg-url is currently up to date with the URL spec up to commit [a62223](https://github.com/whatwg/url/commit/a622235308342c9adc7fc2fd1659ff059f7d5e2a). ## API ### The `URL` Constructor The main API is the [`URL`](https://url.spec.whatwg.org/#url) export, which follows the spec's behavior in all ways (including e.g. `USVString` conversion). Most consumers of this library will want to use this. ### Low-level URL Standard API The following methods are exported for use by places like jsdom that need to implement things like [`HTMLHyperlinkElementUtils`](https://html.spec.whatwg.org/#htmlhyperlinkelementutils). They operate on or return an "internal URL" or ["URL record"](https://url.spec.whatwg.org/#concept-url) type. - [URL parser](https://url.spec.whatwg.org/#concept-url-parser): `parseURL(input, { baseURL, encodingOverride })` - [Basic URL parser](https://url.spec.whatwg.org/#concept-basic-url-parser): `basicURLParse(input, { baseURL, encodingOverride, url, stateOverride })` - [URL serializer](https://url.spec.whatwg.org/#concept-url-serializer): `serializeURL(urlRecord, excludeFragment)` - [Host serializer](https://url.spec.whatwg.org/#concept-host-serializer): `serializeHost(hostFromURLRecord)` - [Serialize an integer](https://url.spec.whatwg.org/#serialize-an-integer): `serializeInteger(number)` - [Origin](https://url.spec.whatwg.org/#concept-url-origin) [serializer](https://html.spec.whatwg.org/multipage/browsers.html#serialization-of-an-origin): `serializeURLOrigin(urlRecord)` - [Set the username](https://url.spec.whatwg.org/#set-the-username): `setTheUsername(urlRecord, usernameString)` - [Set the password](https://url.spec.whatwg.org/#set-the-password): `setThePassword(urlRecord, passwordString)` - [Cannot have a username/password/port](https://url.spec.whatwg.org/#cannot-have-a-username-password-port): `cannotHaveAUsernamePasswordPort(urlRecord)` The `stateOverride` parameter is one of the following strings: - [`"scheme start"`](https://url.spec.whatwg.org/#scheme-start-state) - [`"scheme"`](https://url.spec.whatwg.org/#scheme-state) - [`"no scheme"`](https://url.spec.whatwg.org/#no-scheme-state) - [`"special relative or authority"`](https://url.spec.whatwg.org/#special-relative-or-authority-state) - [`"path or authority"`](https://url.spec.whatwg.org/#path-or-authority-state) - [`"relative"`](https://url.spec.whatwg.org/#relative-state) - [`"relative slash"`](https://url.spec.whatwg.org/#relative-slash-state) - [`"special authority slashes"`](https://url.spec.whatwg.org/#special-authority-slashes-state) - [`"special authority ignore slashes"`](https://url.spec.whatwg.org/#special-authority-ignore-slashes-state) - [`"authority"`](https://url.spec.whatwg.org/#authority-state) - [`"host"`](https://url.spec.whatwg.org/#host-state) - [`"hostname"`](https://url.spec.whatwg.org/#hostname-state) - [`"port"`](https://url.spec.whatwg.org/#port-state) - [`"file"`](https://url.spec.whatwg.org/#file-state) - [`"file slash"`](https://url.spec.whatwg.org/#file-slash-state) - [`"file host"`](https://url.spec.whatwg.org/#file-host-state) - [`"path start"`](https://url.spec.whatwg.org/#path-start-state) - [`"path"`](https://url.spec.whatwg.org/#path-state) - [`"cannot-be-a-base-URL path"`](https://url.spec.whatwg.org/#cannot-be-a-base-url-path-state) - [`"query"`](https://url.spec.whatwg.org/#query-state) - [`"fragment"`](https://url.spec.whatwg.org/#fragment-state) The URL record type has the following API: - [`scheme`](https://url.spec.whatwg.org/#concept-url-scheme) - [`username`](https://url.spec.whatwg.org/#concept-url-username) - [`password`](https://url.spec.whatwg.org/#concept-url-password) - [`host`](https://url.spec.whatwg.org/#concept-url-host) - [`port`](https://url.spec.whatwg.org/#concept-url-port) - [`path`](https://url.spec.whatwg.org/#concept-url-path) (as an array) - [`query`](https://url.spec.whatwg.org/#concept-url-query) - [`fragment`](https://url.spec.whatwg.org/#concept-url-fragment) - [`cannotBeABaseURL`](https://url.spec.whatwg.org/#url-cannot-be-a-base-url-flag) (as a boolean) These properties should be treated with care, as in general changing them will cause the URL record to be in an inconsistent state until the appropriate invocation of `basicURLParse` is used to fix it up. You can see examples of this in the URL Standard, where there are many step sequences like "4. Set context object’s url’s fragment to the empty string. 5. Basic URL parse _input_ with context object’s url as _url_ and fragment state as _state override_." In between those two steps, a URL record is in an unusable state. The return value of "failure" in the spec is represented by the string `"failure"`. That is, functions like `parseURL` and `basicURLParse` can return _either_ a URL record _or_ the string `"failure"`. # eslint-visitor-keys [](https://www.npmjs.com/package/eslint-visitor-keys) [](http://www.npmtrends.com/eslint-visitor-keys) [](https://travis-ci.org/eslint/eslint-visitor-keys) [](https://david-dm.org/eslint/eslint-visitor-keys) Constants and utilities about visitor keys to traverse AST. ## 💿 Installation Use [npm] to install. ```bash $ npm install eslint-visitor-keys ``` ### Requirements - [Node.js] 10.0.0 or later. ## 📖 Usage ```js const evk = require("eslint-visitor-keys") ``` ### evk.KEYS > type: `{ [type: string]: string[] | undefined }` Visitor keys. This keys are frozen. This is an object. Keys are the type of [ESTree] nodes. Their values are an array of property names which have child nodes. For example: ``` console.log(evk.KEYS.AssignmentExpression) // → ["left", "right"] ``` ### evk.getKeys(node) > type: `(node: object) => string[]` Get the visitor keys of a given AST node. This is similar to `Object.keys(node)` of ES Standard, but some keys are excluded: `parent`, `leadingComments`, `trailingComments`, and names which start with `_`. This will be used to traverse unknown nodes. For example: ``` const node = { type: "AssignmentExpression", left: { type: "Identifier", name: "foo" }, right: { type: "Literal", value: 0 } } console.log(evk.getKeys(node)) // → ["type", "left", "right"] ``` ### evk.unionWith(additionalKeys) > type: `(additionalKeys: object) => { [type: string]: string[] | undefined }` Make the union set with `evk.KEYS` and the given keys. - The order of keys is, `additionalKeys` is at first, then `evk.KEYS` is concatenated after that. - It removes duplicated keys as keeping the first one. For example: ``` console.log(evk.unionWith({ MethodDefinition: ["decorators"] })) // → { ..., MethodDefinition: ["decorators", "key", "value"], ... } ``` ## 📰 Change log See [GitHub releases](https://github.com/eslint/eslint-visitor-keys/releases). ## 🍻 Contributing Welcome. See [ESLint contribution guidelines](https://eslint.org/docs/developer-guide/contributing/). ### Development commands - `npm test` runs tests and measures code coverage. - `npm run lint` checks source codes with ESLint. - `npm run coverage` opens the code coverage report of the previous test with your default browser. - `npm run release` publishes this package to [npm] registory. [npm]: https://www.npmjs.com/ [Node.js]: https://nodejs.org/en/ [ESTree]: https://github.com/estree/estree # yargs-parser  [](https://www.npmjs.com/package/yargs-parser) [](https://conventionalcommits.org)  The mighty option parser used by [yargs](https://github.com/yargs/yargs). visit the [yargs website](http://yargs.js.org/) for more examples, and thorough usage instructions. <img width="250" src="https://raw.githubusercontent.com/yargs/yargs-parser/main/yargs-logo.png"> ## Example ```sh npm i yargs-parser --save ``` ```js const argv = require('yargs-parser')(process.argv.slice(2)) console.log(argv) ``` ```console $ node example.js --foo=33 --bar hello { _: [], foo: 33, bar: 'hello' } ``` _or parse a string!_ ```js const argv = require('yargs-parser')('--foo=99 --bar=33') console.log(argv) ``` ```console { _: [], foo: 99, bar: 33 } ``` Convert an array of mixed types before passing to `yargs-parser`: ```js const parse = require('yargs-parser') parse(['-f', 11, '--zoom', 55].join(' ')) // <-- array to string parse(['-f', 11, '--zoom', 55].map(String)) // <-- array of strings ``` ## Deno Example As of `v19` `yargs-parser` supports [Deno](https://github.com/denoland/deno): ```typescript import parser from "https://deno.land/x/yargs_parser/deno.ts"; const argv = parser('--foo=99 --bar=9987930', { string: ['bar'] }) console.log(argv) ``` ## ESM Example As of `v19` `yargs-parser` supports ESM (_both in Node.js and in the browser_): **Node.js:** ```js import parser from 'yargs-parser' const argv = parser('--foo=99 --bar=9987930', { string: ['bar'] }) console.log(argv) ``` **Browsers:** ```html <!doctype html> <body> <script type="module"> import parser from "https://unpkg.com/yargs-parser@19.0.0/browser.js"; const argv = parser('--foo=99 --bar=9987930', { string: ['bar'] }) console.log(argv) </script> </body> ``` ## API ### parser(args, opts={}) Parses command line arguments returning a simple mapping of keys and values. **expects:** * `args`: a string or array of strings representing the options to parse. * `opts`: provide a set of hints indicating how `args` should be parsed: * `opts.alias`: an object representing the set of aliases for a key: `{alias: {foo: ['f']}}`. * `opts.array`: indicate that keys should be parsed as an array: `{array: ['foo', 'bar']}`.<br> Indicate that keys should be parsed as an array and coerced to booleans / numbers:<br> `{array: [{ key: 'foo', boolean: true }, {key: 'bar', number: true}]}`. * `opts.boolean`: arguments should be parsed as booleans: `{boolean: ['x', 'y']}`. * `opts.coerce`: provide a custom synchronous function that returns a coerced value from the argument provided (or throws an error). For arrays the function is called only once for the entire array:<br> `{coerce: {foo: function (arg) {return modifiedArg}}}`. * `opts.config`: indicate a key that represents a path to a configuration file (this file will be loaded and parsed). * `opts.configObjects`: configuration objects to parse, their properties will be set as arguments:<br> `{configObjects: [{'x': 5, 'y': 33}, {'z': 44}]}`. * `opts.configuration`: provide configuration options to the yargs-parser (see: [configuration](#configuration)). * `opts.count`: indicate a key that should be used as a counter, e.g., `-vvv` = `{v: 3}`. * `opts.default`: provide default values for keys: `{default: {x: 33, y: 'hello world!'}}`. * `opts.envPrefix`: environment variables (`process.env`) with the prefix provided should be parsed. * `opts.narg`: specify that a key requires `n` arguments: `{narg: {x: 2}}`. * `opts.normalize`: `path.normalize()` will be applied to values set to this key. * `opts.number`: keys should be treated as numbers. * `opts.string`: keys should be treated as strings (even if they resemble a number `-x 33`). **returns:** * `obj`: an object representing the parsed value of `args` * `key/value`: key value pairs for each argument and their aliases. * `_`: an array representing the positional arguments. * [optional] `--`: an array with arguments after the end-of-options flag `--`. ### require('yargs-parser').detailed(args, opts={}) Parses a command line string, returning detailed information required by the yargs engine. **expects:** * `args`: a string or array of strings representing options to parse. * `opts`: provide a set of hints indicating how `args`, inputs are identical to `require('yargs-parser')(args, opts={})`. **returns:** * `argv`: an object representing the parsed value of `args` * `key/value`: key value pairs for each argument and their aliases. * `_`: an array representing the positional arguments. * [optional] `--`: an array with arguments after the end-of-options flag `--`. * `error`: populated with an error object if an exception occurred during parsing. * `aliases`: the inferred list of aliases built by combining lists in `opts.alias`. * `newAliases`: any new aliases added via camel-case expansion: * `boolean`: `{ fooBar: true }` * `defaulted`: any new argument created by `opts.default`, no aliases included. * `boolean`: `{ foo: true }` * `configuration`: given by default settings and `opts.configuration`. <a name="configuration"></a> ### Configuration The yargs-parser applies several automated transformations on the keys provided in `args`. These features can be turned on and off using the `configuration` field of `opts`. ```js var parsed = parser(['--no-dice'], { configuration: { 'boolean-negation': false } }) ``` ### short option groups * default: `true`. * key: `short-option-groups`. Should a group of short-options be treated as boolean flags? ```console $ node example.js -abc { _: [], a: true, b: true, c: true } ``` _if disabled:_ ```console $ node example.js -abc { _: [], abc: true } ``` ### camel-case expansion * default: `true`. * key: `camel-case-expansion`. Should hyphenated arguments be expanded into camel-case aliases? ```console $ node example.js --foo-bar { _: [], 'foo-bar': true, fooBar: true } ``` _if disabled:_ ```console $ node example.js --foo-bar { _: [], 'foo-bar': true } ``` ### dot-notation * default: `true` * key: `dot-notation` Should keys that contain `.` be treated as objects? ```console $ node example.js --foo.bar { _: [], foo: { bar: true } } ``` _if disabled:_ ```console $ node example.js --foo.bar { _: [], "foo.bar": true } ``` ### parse numbers * default: `true` * key: `parse-numbers` Should keys that look like numbers be treated as such? ```console $ node example.js --foo=99.3 { _: [], foo: 99.3 } ``` _if disabled:_ ```console $ node example.js --foo=99.3 { _: [], foo: "99.3" } ``` ### parse positional numbers * default: `true` * key: `parse-positional-numbers` Should positional keys that look like numbers be treated as such. ```console $ node example.js 99.3 { _: [99.3] } ``` _if disabled:_ ```console $ node example.js 99.3 { _: ['99.3'] } ``` ### boolean negation * default: `true` * key: `boolean-negation` Should variables prefixed with `--no` be treated as negations? ```console $ node example.js --no-foo { _: [], foo: false } ``` _if disabled:_ ```console $ node example.js --no-foo { _: [], "no-foo": true } ``` ### combine arrays * default: `false` * key: `combine-arrays` Should arrays be combined when provided by both command line arguments and a configuration file. ### duplicate arguments array * default: `true` * key: `duplicate-arguments-array` Should arguments be coerced into an array when duplicated: ```console $ node example.js -x 1 -x 2 { _: [], x: [1, 2] } ``` _if disabled:_ ```console $ node example.js -x 1 -x 2 { _: [], x: 2 } ``` ### flatten duplicate arrays * default: `true` * key: `flatten-duplicate-arrays` Should array arguments be coerced into a single array when duplicated: ```console $ node example.js -x 1 2 -x 3 4 { _: [], x: [1, 2, 3, 4] } ``` _if disabled:_ ```console $ node example.js -x 1 2 -x 3 4 { _: [], x: [[1, 2], [3, 4]] } ``` ### greedy arrays * default: `true` * key: `greedy-arrays` Should arrays consume more than one positional argument following their flag. ```console $ node example --arr 1 2 { _: [], arr: [1, 2] } ``` _if disabled:_ ```console $ node example --arr 1 2 { _: [2], arr: [1] } ``` **Note: in `v18.0.0` we are considering defaulting greedy arrays to `false`.** ### nargs eats options * default: `false` * key: `nargs-eats-options` Should nargs consume dash options as well as positional arguments. ### negation prefix * default: `no-` * key: `negation-prefix` The prefix to use for negated boolean variables. ```console $ node example.js --no-foo { _: [], foo: false } ``` _if set to `quux`:_ ```console $ node example.js --quuxfoo { _: [], foo: false } ``` ### populate -- * default: `false`. * key: `populate--` Should unparsed flags be stored in `--` or `_`. _If disabled:_ ```console $ node example.js a -b -- x y { _: [ 'a', 'x', 'y' ], b: true } ``` _If enabled:_ ```console $ node example.js a -b -- x y { _: [ 'a' ], '--': [ 'x', 'y' ], b: true } ``` ### set placeholder key * default: `false`. * key: `set-placeholder-key`. Should a placeholder be added for keys not set via the corresponding CLI argument? _If disabled:_ ```console $ node example.js -a 1 -c 2 { _: [], a: 1, c: 2 } ``` _If enabled:_ ```console $ node example.js -a 1 -c 2 { _: [], a: 1, b: undefined, c: 2 } ``` ### halt at non-option * default: `false`. * key: `halt-at-non-option`. Should parsing stop at the first positional argument? This is similar to how e.g. `ssh` parses its command line. _If disabled:_ ```console $ node example.js -a run b -x y { _: [ 'b' ], a: 'run', x: 'y' } ``` _If enabled:_ ```console $ node example.js -a run b -x y { _: [ 'b', '-x', 'y' ], a: 'run' } ``` ### strip aliased * default: `false` * key: `strip-aliased` Should aliases be removed before returning results? _If disabled:_ ```console $ node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1, 'test-alias': 1, testAlias: 1 } ``` _If enabled:_ ```console $ node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1 } ``` ### strip dashed * default: `false` * key: `strip-dashed` Should dashed keys be removed before returning results? This option has no effect if `camel-case-expansion` is disabled. _If disabled:_ ```console $ node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1 } ``` _If enabled:_ ```console $ node example.js --test-field 1 { _: [], testField: 1 } ``` ### unknown options as args * default: `false` * key: `unknown-options-as-args` Should unknown options be treated like regular arguments? An unknown option is one that is not configured in `opts`. _If disabled_ ```console $ node example.js --unknown-option --known-option 2 --string-option --unknown-option2 { _: [], unknownOption: true, knownOption: 2, stringOption: '', unknownOption2: true } ``` _If enabled_ ```console $ node example.js --unknown-option --known-option 2 --string-option --unknown-option2 { _: ['--unknown-option'], knownOption: 2, stringOption: '--unknown-option2' } ``` ## Supported Node.js Versions Libraries in this ecosystem make a best effort to track [Node.js' release schedule](https://nodejs.org/en/about/releases/). Here's [a post on why we think this is important](https://medium.com/the-node-js-collection/maintainers-should-consider-following-node-js-release-schedule-ab08ed4de71a). ## Special Thanks The yargs project evolves from optimist and minimist. It owes its existence to a lot of James Halliday's hard work. Thanks [substack](https://github.com/substack) **beep** **boop** \o/ ## License ISC # ansi-colors [](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W8YFZ425KND68) [](https://www.npmjs.com/package/ansi-colors) [](https://npmjs.org/package/ansi-colors) [](https://npmjs.org/package/ansi-colors) [](https://travis-ci.org/doowb/ansi-colors) > Easily add ANSI colors to your text and symbols in the terminal. A faster drop-in replacement for chalk, kleur and turbocolor (without the dependencies and rendering bugs). Please consider following this project's author, [Brian Woodward](https://github.com/doowb), and consider starring the project to show your :heart: and support. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save ansi-colors ```  ## Why use this? ansi-colors is _the fastest Node.js library for terminal styling_. A more performant drop-in replacement for chalk, with no dependencies. * _Blazing fast_ - Fastest terminal styling library in node.js, 10-20x faster than chalk! * _Drop-in replacement_ for [chalk](https://github.com/chalk/chalk). * _No dependencies_ (Chalk has 7 dependencies in its tree!) * _Safe_ - Does not modify the `String.prototype` like [colors](https://github.com/Marak/colors.js). * Supports [nested colors](#nested-colors), **and does not have the [nested styling bug](#nested-styling-bug) that is present in [colorette](https://github.com/jorgebucaran/colorette), [chalk](https://github.com/chalk/chalk), and [kleur](https://github.com/lukeed/kleur)**. * Supports [chained colors](#chained-colors). * [Toggle color support](#toggle-color-support) on or off. ## Usage ```js const c = require('ansi-colors'); console.log(c.red('This is a red string!')); console.log(c.green('This is a red string!')); console.log(c.cyan('This is a cyan string!')); console.log(c.yellow('This is a yellow string!')); ```  ## Chained colors ```js console.log(c.bold.red('this is a bold red message')); console.log(c.bold.yellow.italic('this is a bold yellow italicized message')); console.log(c.green.bold.underline('this is a bold green underlined message')); ```  ## Nested colors ```js console.log(c.yellow(`foo ${c.red.bold('red')} bar ${c.cyan('cyan')} baz`)); ```  ### Nested styling bug `ansi-colors` does not have the nested styling bug found in [colorette](https://github.com/jorgebucaran/colorette), [chalk](https://github.com/chalk/chalk), and [kleur](https://github.com/lukeed/kleur). ```js const { bold, red } = require('ansi-styles'); console.log(bold(`foo ${red.dim('bar')} baz`)); const colorette = require('colorette'); console.log(colorette.bold(`foo ${colorette.red(colorette.dim('bar'))} baz`)); const kleur = require('kleur'); console.log(kleur.bold(`foo ${kleur.red.dim('bar')} baz`)); const chalk = require('chalk'); console.log(chalk.bold(`foo ${chalk.red.dim('bar')} baz`)); ``` **Results in the following** (sans icons and labels)  ## Toggle color support Easily enable/disable colors. ```js const c = require('ansi-colors'); // disable colors manually c.enabled = false; // or use a library to automatically detect support c.enabled = require('color-support').hasBasic; console.log(c.red('I will only be colored red if the terminal supports colors')); ``` ## Strip ANSI codes Use the `.unstyle` method to strip ANSI codes from a string. ```js console.log(c.unstyle(c.blue.bold('foo bar baz'))); //=> 'foo bar baz' ``` ## Available styles **Note** that bright and bright-background colors are not always supported. | Colors | Background Colors | Bright Colors | Bright Background Colors | | ------- | ----------------- | ------------- | ------------------------ | | black | bgBlack | blackBright | bgBlackBright | | red | bgRed | redBright | bgRedBright | | green | bgGreen | greenBright | bgGreenBright | | yellow | bgYellow | yellowBright | bgYellowBright | | blue | bgBlue | blueBright | bgBlueBright | | magenta | bgMagenta | magentaBright | bgMagentaBright | | cyan | bgCyan | cyanBright | bgCyanBright | | white | bgWhite | whiteBright | bgWhiteBright | | gray | | | | | grey | | | | _(`gray` is the U.S. spelling, `grey` is more commonly used in the Canada and U.K.)_ ### Style modifiers * dim * **bold** * hidden * _italic_ * underline * inverse * ~~strikethrough~~ * reset ## Aliases Create custom aliases for styles. ```js const colors = require('ansi-colors'); colors.alias('primary', colors.yellow); colors.alias('secondary', colors.bold); console.log(colors.primary.secondary('Foo')); ``` ## Themes A theme is an object of custom aliases. ```js const colors = require('ansi-colors'); colors.theme({ danger: colors.red, dark: colors.dim.gray, disabled: colors.gray, em: colors.italic, heading: colors.bold.underline, info: colors.cyan, muted: colors.dim, primary: colors.blue, strong: colors.bold, success: colors.green, underline: colors.underline, warning: colors.yellow }); // Now, we can use our custom styles alongside the built-in styles! console.log(colors.danger.strong.em('Error!')); console.log(colors.warning('Heads up!')); console.log(colors.info('Did you know...')); console.log(colors.success.bold('It worked!')); ``` ## Performance **Libraries tested** * ansi-colors v3.0.4 * chalk v2.4.1 ### Mac > MacBook Pro, Intel Core i7, 2.3 GHz, 16 GB. **Load time** Time it takes to load the first time `require()` is called: * ansi-colors - `1.915ms` * chalk - `12.437ms` **Benchmarks** ``` # All Colors ansi-colors x 173,851 ops/sec ±0.42% (91 runs sampled) chalk x 9,944 ops/sec ±2.53% (81 runs sampled))) # Chained colors ansi-colors x 20,791 ops/sec ±0.60% (88 runs sampled) chalk x 2,111 ops/sec ±2.34% (83 runs sampled) # Nested colors ansi-colors x 59,304 ops/sec ±0.98% (92 runs sampled) chalk x 4,590 ops/sec ±2.08% (82 runs sampled) ``` ### Windows > Windows 10, Intel Core i7-7700k CPU @ 4.2 GHz, 32 GB **Load time** Time it takes to load the first time `require()` is called: * ansi-colors - `1.494ms` * chalk - `11.523ms` **Benchmarks** ``` # All Colors ansi-colors x 193,088 ops/sec ±0.51% (95 runs sampled)) chalk x 9,612 ops/sec ±3.31% (77 runs sampled))) # Chained colors ansi-colors x 26,093 ops/sec ±1.13% (94 runs sampled) chalk x 2,267 ops/sec ±2.88% (80 runs sampled)) # Nested colors ansi-colors x 67,747 ops/sec ±0.49% (93 runs sampled) chalk x 4,446 ops/sec ±3.01% (82 runs sampled)) ``` ## About <details> <summary><strong>Contributing</strong></summary> Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). </details> <details> <summary><strong>Running Tests</strong></summary> Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` </details> <details> <summary><strong>Building docs</strong></summary> _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` </details> ### Related projects You might also be interested in these projects: * [ansi-wrap](https://www.npmjs.com/package/ansi-wrap): Create ansi colors by passing the open and close codes. | [homepage](https://github.com/jonschlinkert/ansi-wrap "Create ansi colors by passing the open and close codes.") * [strip-color](https://www.npmjs.com/package/strip-color): Strip ANSI color codes from a string. No dependencies. | [homepage](https://github.com/jonschlinkert/strip-color "Strip ANSI color codes from a string. No dependencies.") ### Contributors | **Commits** | **Contributor** | | --- | --- | | 48 | [jonschlinkert](https://github.com/jonschlinkert) | | 42 | [doowb](https://github.com/doowb) | | 6 | [lukeed](https://github.com/lukeed) | | 2 | [Silic0nS0ldier](https://github.com/Silic0nS0ldier) | | 1 | [dwieeb](https://github.com/dwieeb) | | 1 | [jorgebucaran](https://github.com/jorgebucaran) | | 1 | [madhavarshney](https://github.com/madhavarshney) | | 1 | [chapterjason](https://github.com/chapterjason) | ### Author **Brian Woodward** * [GitHub Profile](https://github.com/doowb) * [Twitter Profile](https://twitter.com/doowb) * [LinkedIn Profile](https://linkedin.com/in/woodwardbrian) ### License Copyright © 2019, [Brian Woodward](https://github.com/doowb). Released under the [MIT License](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.8.0, on July 01, 2019._ # jest-mock ## API ```js import {ModuleMocker} from 'jest-mock'; ``` ### `constructor(global)` Creates a new module mocker that generates mocks as if they were created in an environment with the given global object. ### `generateFromMetadata(metadata)` Generates a mock based on the given metadata (Metadata for the mock in the schema returned by the getMetadata method of this module). Mocks treat functions specially, and all mock functions have additional members, described in the documentation for `fn` in this module. One important note: function prototypes are handled specially by this mocking framework. For functions with prototypes, when called as a constructor, the mock will install mocked function members on the instance. This allows different instances of the same constructor to have different values for its mocks member and its return values. ### `getMetadata(component)` Inspects the argument and returns its schema in the following recursive format: ``` { type: ... members: {} } ``` Where type is one of `array`, `object`, `function`, or `ref`, and members is an optional dictionary where the keys are member names and the values are metadata objects. Function prototypes are defined by defining metadata for the `member.prototype` of the function. The type of a function prototype should always be `object`. For instance, a class might be defined like this: ```js const classDef = { type: 'function', members: { staticMethod: {type: 'function'}, prototype: { type: 'object', members: { instanceMethod: {type: 'function'}, }, }, }, }; ``` Metadata may also contain references to other objects defined within the same metadata object. The metadata for the referent must be marked with `refID` key and an arbitrary value. The referrer must be marked with a `ref` key that has the same value as object with refID that it refers to. For instance, this metadata blob: ```js const refID = { type: 'object', refID: 1, members: { self: {ref: 1}, }, }; ``` defines an object with a slot named `self` that refers back to the object. ### `fn` Generates a stand-alone function with members that help drive unit tests or confirm expectations. Specifically, functions returned by this method have the following members: ##### `.mock` An object with three members, `calls`, `instances` and `invocationCallOrder`, which are all lists. The items in the `calls` list are the arguments with which the function was called. The "instances" list stores the value of 'this' for each call to the function. This is useful for retrieving instances from a constructor. The `invocationCallOrder` lists the order in which the mock was called in relation to all mock calls, starting at 1. ##### `.mockReturnValueOnce(value)` Pushes the given value onto a FIFO queue of return values for the function. ##### `.mockReturnValue(value)` Sets the default return value for the function. ##### `.mockImplementationOnce(function)` Pushes the given mock implementation onto a FIFO queue of mock implementations for the function. ##### `.mockImplementation(function)` Sets the default mock implementation for the function. ##### `.mockReturnThis()` Syntactic sugar for .mockImplementation(function() {return this;}) In case both `mockImplementationOnce()/mockImplementation()` and `mockReturnValueOnce()/mockReturnValue()` are called. The priority of which to use is based on what is the last call: - if the last call is mockReturnValueOnce() or mockReturnValue(), use the specific return value or default return value. If specific return values are used up or no default return value is set, fall back to try mockImplementation(); - if the last call is mockImplementationOnce() or mockImplementation(), run the specific implementation and return the result or run default implementation and return the result. # pretty-format Stringify any JavaScript value. - Serialize built-in JavaScript types. - Serialize application-specific data types with built-in or user-defined plugins. ## Installation ```sh $ yarn add pretty-format ``` ## Usage ```js const {format: prettyFormat} = require('pretty-format'); // CommonJS ``` ```js import {format as prettyFormat} from 'pretty-format'; // ES2015 modules ``` ```js const val = {object: {}}; val.circularReference = val; val[Symbol('foo')] = 'foo'; val.map = new Map([['prop', 'value']]); val.array = [-0, Infinity, NaN]; console.log(prettyFormat(val)); /* Object { "array": Array [ -0, Infinity, NaN, ], "circularReference": [Circular], "map": Map { "prop" => "value", }, "object": Object {}, Symbol(foo): "foo", } */ ``` ## Usage with options ```js function onClick() {} console.log(prettyFormat(onClick)); /* [Function onClick] */ const options = { printFunctionName: false, }; console.log(prettyFormat(onClick, options)); /* [Function] */ ``` <!-- prettier-ignore --> | key | type | default | description | | :-------------------- | :-------- | :--------- | :------------------------------------------------------ | | `callToJSON` | `boolean` | `true` | call `toJSON` method (if it exists) on objects | | `compareKeys` | `function`| `undefined`| compare function used when sorting object keys | | `escapeRegex` | `boolean` | `false` | escape special characters in regular expressions | | `escapeString` | `boolean` | `true` | escape special characters in strings | | `highlight` | `boolean` | `false` | highlight syntax with colors in terminal (some plugins) | | `indent` | `number` | `2` | spaces in each level of indentation | | `maxDepth` | `number` | `Infinity` | levels to print in arrays, objects, elements, and so on | | `min` | `boolean` | `false` | minimize added space: no indentation nor line breaks | | `plugins` | `array` | `[]` | plugins to serialize application-specific data types | | `printBasicPrototype` | `boolean` | `false` | print the prototype for plain objects and arrays | | `printFunctionName` | `boolean` | `true` | include or omit the name of a function | | `theme` | `object` | | colors to highlight syntax in terminal | Property values of `theme` are from [ansi-styles colors](https://github.com/chalk/ansi-styles#colors) ```js const DEFAULT_THEME = { comment: 'gray', content: 'reset', prop: 'yellow', tag: 'cyan', value: 'green', }; ``` ## Usage with plugins The `pretty-format` package provides some built-in plugins, including: - `ReactElement` for elements from `react` - `ReactTestComponent` for test objects from `react-test-renderer` ```js // CommonJS const React = require('react'); const renderer = require('react-test-renderer'); const {format: prettyFormat, plugins} = require('pretty-format'); const {ReactElement, ReactTestComponent} = plugins; ``` ```js // ES2015 modules and destructuring assignment import React from 'react'; import renderer from 'react-test-renderer'; import {plugins, format as prettyFormat} from 'pretty-format'; const {ReactElement, ReactTestComponent} = plugins; ``` ```js const onClick = () => {}; const element = React.createElement('button', {onClick}, 'Hello World'); const formatted1 = prettyFormat(element, { plugins: [ReactElement], printFunctionName: false, }); const formatted2 = prettyFormat(renderer.create(element).toJSON(), { plugins: [ReactTestComponent], printFunctionName: false, }); /* <button onClick=[Function] > Hello World </button> */ ``` ## Usage in Jest For snapshot tests, Jest uses `pretty-format` with options that include some of its built-in plugins. For this purpose, plugins are also known as **snapshot serializers**. To serialize application-specific data types, you can add modules to `devDependencies` of a project, and then: In an **individual** test file, you can add a module as follows. It precedes any modules from Jest configuration. ```js import serializer from 'my-serializer-module'; expect.addSnapshotSerializer(serializer); // tests which have `expect(value).toMatchSnapshot()` assertions ``` For **all** test files, you can specify modules in Jest configuration. They precede built-in plugins for React, HTML, and Immutable.js data types. For example, in a `package.json` file: ```json { "jest": { "snapshotSerializers": ["my-serializer-module"] } } ``` ## Writing plugins A plugin is a JavaScript object. If `options` has a `plugins` array: for the first plugin whose `test(val)` method returns a truthy value, then `prettyFormat(val, options)` returns the result from either: - `serialize(val, …)` method of the **improved** interface (available in **version 21** or later) - `print(val, …)` method of the **original** interface (if plugin does not have `serialize` method) ### test Write `test` so it can receive `val` argument of any type. To serialize **objects** which have certain properties, then a guarded expression like `val != null && …` or more concise `val && …` prevents the following errors: - `TypeError: Cannot read property 'whatever' of null` - `TypeError: Cannot read property 'whatever' of undefined` For example, `test` method of built-in `ReactElement` plugin: ```js const elementSymbol = Symbol.for('react.element'); const test = val => val && val.$$typeof === elementSymbol; ``` Pay attention to efficiency in `test` because `pretty-format` calls it often. ### serialize The **improved** interface is available in **version 21** or later. Write `serialize` to return a string, given the arguments: - `val` which “passed the test” - unchanging `config` object: derived from `options` - current `indentation` string: concatenate to `indent` from `config` - current `depth` number: compare to `maxDepth` from `config` - current `refs` array: find circular references in objects - `printer` callback function: serialize children ### config <!-- prettier-ignore --> | key | type | description | | :------------------ | :-------- | :------------------------------------------------------ | | `callToJSON` | `boolean` | call `toJSON` method (if it exists) on objects | | `compareKeys` | `function`| compare function used when sorting object keys | | `colors` | `Object` | escape codes for colors to highlight syntax | | `escapeRegex` | `boolean` | escape special characters in regular expressions | | `escapeString` | `boolean` | escape special characters in strings | | `indent` | `string` | spaces in each level of indentation | | `maxDepth` | `number` | levels to print in arrays, objects, elements, and so on | | `min` | `boolean` | minimize added space: no indentation nor line breaks | | `plugins` | `array` | plugins to serialize application-specific data types | | `printFunctionName` | `boolean` | include or omit the name of a function | | `spacingInner` | `strong` | spacing to separate items in a list | | `spacingOuter` | `strong` | spacing to enclose a list of items | Each property of `colors` in `config` corresponds to a property of `theme` in `options`: - the key is the same (for example, `tag`) - the value in `colors` is a object with `open` and `close` properties whose values are escape codes from [ansi-styles](https://github.com/chalk/ansi-styles) for the color value in `theme` (for example, `'cyan'`) Some properties in `config` are derived from `min` in `options`: - `spacingInner` and `spacingOuter` are **newline** if `min` is `false` - `spacingInner` is **space** and `spacingOuter` is **empty string** if `min` is `true` ### Example of serialize and test This plugin is a pattern you can apply to serialize composite data types. Side note: `pretty-format` does not need a plugin to serialize arrays. ```js // We reused more code when we factored out a function for child items // that is independent of depth, name, and enclosing punctuation (see below). const SEPARATOR = ','; function serializeItems(items, config, indentation, depth, refs, printer) { if (items.length === 0) { return ''; } const indentationItems = indentation + config.indent; return ( config.spacingOuter + items .map( item => indentationItems + printer(item, config, indentationItems, depth, refs), // callback ) .join(SEPARATOR + config.spacingInner) + (config.min ? '' : SEPARATOR) + // following the last item config.spacingOuter + indentation ); } const plugin = { test(val) { return Array.isArray(val); }, serialize(array, config, indentation, depth, refs, printer) { const name = array.constructor.name; return ++depth > config.maxDepth ? '[' + name + ']' : (config.min ? '' : name + ' ') + '[' + serializeItems(array, config, indentation, depth, refs, printer) + ']'; }, }; ``` ```js const val = { filter: 'completed', items: [ { text: 'Write test', completed: true, }, { text: 'Write serialize', completed: true, }, ], }; ``` ```js console.log( prettyFormat(val, { plugins: [plugin], }), ); /* Object { "filter": "completed", "items": Array [ Object { "completed": true, "text": "Write test", }, Object { "completed": true, "text": "Write serialize", }, ], } */ ``` ```js console.log( prettyFormat(val, { indent: 4, plugins: [plugin], }), ); /* Object { "filter": "completed", "items": Array [ Object { "completed": true, "text": "Write test", }, Object { "completed": true, "text": "Write serialize", }, ], } */ ``` ```js console.log( prettyFormat(val, { maxDepth: 1, plugins: [plugin], }), ); /* Object { "filter": "completed", "items": [Array], } */ ``` ```js console.log( prettyFormat(val, { min: true, plugins: [plugin], }), ); /* {"filter": "completed", "items": [{"completed": true, "text": "Write test"}, {"completed": true, "text": "Write serialize"}]} */ ``` ### print The **original** interface is adequate for plugins: - that **do not** depend on options other than `highlight` or `min` - that **do not** depend on `depth` or `refs` in recursive traversal, and - if values either - do **not** require indentation, or - do **not** occur as children of JavaScript data structures (for example, array) Write `print` to return a string, given the arguments: - `val` which “passed the test” - current `printer(valChild)` callback function: serialize children - current `indenter(lines)` callback function: indent lines at the next level - unchanging `config` object: derived from `options` - unchanging `colors` object: derived from `options` The 3 properties of `config` are `min` in `options` and: - `spacing` and `edgeSpacing` are **newline** if `min` is `false` - `spacing` is **space** and `edgeSpacing` is **empty string** if `min` is `true` Each property of `colors` corresponds to a property of `theme` in `options`: - the key is the same (for example, `tag`) - the value in `colors` is a object with `open` and `close` properties whose values are escape codes from [ansi-styles](https://github.com/chalk/ansi-styles) for the color value in `theme` (for example, `'cyan'`) ### Example of print and test This plugin prints functions with the **number of named arguments** excluding rest argument. ```js const plugin = { print(val) { return `[Function ${val.name || 'anonymous'} ${val.length}]`; }, test(val) { return typeof val === 'function'; }, }; ``` ```js const val = { onClick(event) {}, render() {}, }; prettyFormat(val, { plugins: [plugin], }); /* Object { "onClick": [Function onClick 1], "render": [Function render 0], } */ prettyFormat(val); /* Object { "onClick": [Function onClick], "render": [Function render], } */ ``` This plugin **ignores** the `printFunctionName` option. That limitation of the original `print` interface is a reason to use the improved `serialize` interface, described above. ```js prettyFormat(val, { plugins: [pluginOld], printFunctionName: false, }); /* Object { "onClick": [Function onClick 1], "render": [Function render 0], } */ prettyFormat(val, { printFunctionName: false, }); /* Object { "onClick": [Function], "render": [Function], } */ ``` ## Follow Redirects Drop-in replacement for Node's `http` and `https` modules that automatically follows redirects. [](https://www.npmjs.com/package/follow-redirects) [](https://github.com/follow-redirects/follow-redirects/actions) [](https://coveralls.io/r/follow-redirects/follow-redirects?branch=master) [](https://www.npmjs.com/package/follow-redirects) [](https://github.com/sponsors/RubenVerborgh) `follow-redirects` provides [request](https://nodejs.org/api/http.html#http_http_request_options_callback) and [get](https://nodejs.org/api/http.html#http_http_get_options_callback) methods that behave identically to those found on the native [http](https://nodejs.org/api/http.html#http_http_request_options_callback) and [https](https://nodejs.org/api/https.html#https_https_request_options_callback) modules, with the exception that they will seamlessly follow redirects. ```javascript const { http, https } = require('follow-redirects'); http.get('http://bit.ly/900913', response => { response.on('data', chunk => { console.log(chunk); }); }).on('error', err => { console.error(err); }); ``` You can inspect the final redirected URL through the `responseUrl` property on the `response`. If no redirection happened, `responseUrl` is the original request URL. ```javascript const request = https.request({ host: 'bitly.com', path: '/UHfDGO', }, response => { console.log(response.responseUrl); // 'http://duckduckgo.com/robots.txt' }); request.end(); ``` ## Options ### Global options Global options are set directly on the `follow-redirects` module: ```javascript const followRedirects = require('follow-redirects'); followRedirects.maxRedirects = 10; followRedirects.maxBodyLength = 20 * 1024 * 1024; // 20 MB ``` The following global options are supported: - `maxRedirects` (default: `21`) – sets the maximum number of allowed redirects; if exceeded, an error will be emitted. - `maxBodyLength` (default: 10MB) – sets the maximum size of the request body; if exceeded, an error will be emitted. ### Per-request options Per-request options are set by passing an `options` object: ```javascript const url = require('url'); const { http, https } = require('follow-redirects'); const options = url.parse('http://bit.ly/900913'); options.maxRedirects = 10; options.beforeRedirect = (options, response, request) => { // Use this to adjust the request options upon redirecting, // to inspect the latest response headers, // or to cancel the request by throwing an error // response.headers = the redirect response headers // response.statusCode = the redirect response code (eg. 301, 307, etc.) // request.url = the requested URL that resulted in a redirect // request.headers = the headers in the request that resulted in a redirect // request.method = the method of the request that resulted in a redirect if (options.hostname === "example.com") { options.auth = "user:password"; } }; http.request(options); ``` In addition to the [standard HTTP](https://nodejs.org/api/http.html#http_http_request_options_callback) and [HTTPS options](https://nodejs.org/api/https.html#https_https_request_options_callback), the following per-request options are supported: - `followRedirects` (default: `true`) – whether redirects should be followed. - `maxRedirects` (default: `21`) – sets the maximum number of allowed redirects; if exceeded, an error will be emitted. - `maxBodyLength` (default: 10MB) – sets the maximum size of the request body; if exceeded, an error will be emitted. - `beforeRedirect` (default: `undefined`) – optionally change the request `options` on redirects, or abort the request by throwing an error. - `agents` (default: `undefined`) – sets the `agent` option per protocol, since HTTP and HTTPS use different agents. Example value: `{ http: new http.Agent(), https: new https.Agent() }` - `trackRedirects` (default: `false`) – whether to store the redirected response details into the `redirects` array on the response object. ### Advanced usage By default, `follow-redirects` will use the Node.js default implementations of [`http`](https://nodejs.org/api/http.html) and [`https`](https://nodejs.org/api/https.html). To enable features such as caching and/or intermediate request tracking, you might instead want to wrap `follow-redirects` around custom protocol implementations: ```javascript const { http, https } = require('follow-redirects').wrap({ http: require('your-custom-http'), https: require('your-custom-https'), }); ``` Such custom protocols only need an implementation of the `request` method. ## Browser Usage Due to the way the browser works, the `http` and `https` browser equivalents perform redirects by default. By requiring `follow-redirects` this way: ```javascript const http = require('follow-redirects/http'); const https = require('follow-redirects/https'); ``` you can easily tell webpack and friends to replace `follow-redirect` by the built-in versions: ```json { "follow-redirects/http" : "http", "follow-redirects/https" : "https" } ``` ## Contributing Pull Requests are always welcome. Please [file an issue](https://github.com/follow-redirects/follow-redirects/issues) detailing your proposal before you invest your valuable time. Additional features and bug fixes should be accompanied by tests. You can run the test suite locally with a simple `npm test` command. ## Debug Logging `follow-redirects` uses the excellent [debug](https://www.npmjs.com/package/debug) for logging. To turn on logging set the environment variable `DEBUG=follow-redirects` for debug output from just this module. When running the test suite it is sometimes advantageous to set `DEBUG=*` to see output from the express server as well. ## Authors - [Ruben Verborgh](https://ruben.verborgh.org/) - [Olivier Lalonde](mailto:olalonde@gmail.com) - [James Talmage](mailto:james@talmage.io) ## License [MIT License](https://github.com/follow-redirects/follow-redirects/blob/master/LICENSE) ### Estraverse [](http://travis-ci.org/estools/estraverse) Estraverse ([estraverse](http://github.com/estools/estraverse)) is [ECMAScript](http://www.ecma-international.org/publications/standards/Ecma-262.htm) traversal functions from [esmangle project](http://github.com/estools/esmangle). ### Documentation You can find usage docs at [wiki page](https://github.com/estools/estraverse/wiki/Usage). ### Example Usage The following code will output all variables declared at the root of a file. ```javascript estraverse.traverse(ast, { enter: function (node, parent) { if (node.type == 'FunctionExpression' || node.type == 'FunctionDeclaration') return estraverse.VisitorOption.Skip; }, leave: function (node, parent) { if (node.type == 'VariableDeclarator') console.log(node.id.name); } }); ``` We can use `this.skip`, `this.remove` and `this.break` functions instead of using Skip, Remove and Break. ```javascript estraverse.traverse(ast, { enter: function (node) { this.break(); } }); ``` And estraverse provides `estraverse.replace` function. When returning node from `enter`/`leave`, current node is replaced with it. ```javascript result = estraverse.replace(tree, { enter: function (node) { // Replace it with replaced. if (node.type === 'Literal') return replaced; } }); ``` By passing `visitor.keys` mapping, we can extend estraverse traversing functionality. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Extending the existing traversing rules. keys: { // TargetNodeName: [ 'keys', 'containing', 'the', 'other', '**node**' ] TestExpression: ['argument'] } }); ``` By passing `visitor.fallback` option, we can control the behavior when encountering unknown nodes. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Iterating the child **nodes** of unknown nodes. fallback: 'iteration' }); ``` When `visitor.fallback` is a function, we can determine which keys to visit on each node. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Skip the `argument` property of each node fallback: function(node) { return Object.keys(node).filter(function(key) { return key !== 'argument'; }); } }); ``` ### License Copyright (C) 2012-2016 [Yusuke Suzuki](http://github.com/Constellation) (twitter: [@Constellation](http://twitter.com/Constellation)) and other contributors. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # buffer [![travis][travis-image]][travis-url] [![npm][npm-image]][npm-url] [![downloads][downloads-image]][downloads-url] [![javascript style guide][standard-image]][standard-url] [travis-image]: https://img.shields.io/travis/feross/buffer/master.svg [travis-url]: https://travis-ci.org/feross/buffer [npm-image]: https://img.shields.io/npm/v/buffer.svg [npm-url]: https://npmjs.org/package/buffer [downloads-image]: https://img.shields.io/npm/dm/buffer.svg [downloads-url]: https://npmjs.org/package/buffer [standard-image]: https://img.shields.io/badge/code_style-standard-brightgreen.svg [standard-url]: https://standardjs.com #### The buffer module from [node.js](https://nodejs.org/), for the browser. [![saucelabs][saucelabs-image]][saucelabs-url] [saucelabs-image]: https://saucelabs.com/browser-matrix/buffer.svg [saucelabs-url]: https://saucelabs.com/u/buffer With [browserify](http://browserify.org), simply `require('buffer')` or use the `Buffer` global and you will get this module. The goal is to provide an API that is 100% identical to [node's Buffer API](https://nodejs.org/api/buffer.html). Read the [official docs](https://nodejs.org/api/buffer.html) for the full list of properties, instance methods, and class methods that are supported. ## features - Manipulate binary data like a boss, in all browsers! - Super fast. Backed by Typed Arrays (`Uint8Array`/`ArrayBuffer`, not `Object`) - Extremely small bundle size (**6.75KB minified + gzipped**, 51.9KB with comments) - Excellent browser support (Chrome, Firefox, Edge, Safari 9+, IE 11, iOS 9+, Android, etc.) - Preserves Node API exactly, with one minor difference (see below) - Square-bracket `buf[4]` notation works! - Does not modify any browser prototypes or put anything on `window` - Comprehensive test suite (including all buffer tests from node.js core) ## install To use this module directly (without browserify), install it: ```bash npm install buffer ``` This module was previously called **native-buffer-browserify**, but please use **buffer** from now on. If you do not use a bundler, you can use the [standalone script](https://bundle.run/buffer). ## usage The module's API is identical to node's `Buffer` API. Read the [official docs](https://nodejs.org/api/buffer.html) for the full list of properties, instance methods, and class methods that are supported. As mentioned above, `require('buffer')` or use the `Buffer` global with [browserify](http://browserify.org) and this module will automatically be included in your bundle. Almost any npm module will work in the browser, even if it assumes that the node `Buffer` API will be available. To depend on this module explicitly (without browserify), require it like this: ```js var Buffer = require('buffer/').Buffer // note: the trailing slash is important! ``` To require this module explicitly, use `require('buffer/')` which tells the node.js module lookup algorithm (also used by browserify) to use the **npm module** named `buffer` instead of the **node.js core** module named `buffer`! ## how does it work? The Buffer constructor returns instances of `Uint8Array` that have their prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of `Uint8Array`, so the returned instances will have all the node `Buffer` methods and the `Uint8Array` methods. Square bracket notation works as expected -- it returns a single octet. The `Uint8Array` prototype remains unmodified. ## tracking the latest node api This module tracks the Buffer API in the latest (unstable) version of node.js. The Buffer API is considered **stable** in the [node stability index](https://nodejs.org/docs/latest/api/documentation.html#documentation_stability_index), so it is unlikely that there will ever be breaking changes. Nonetheless, when/if the Buffer API changes in node, this module's API will change accordingly. ## related packages - [`buffer-reverse`](https://www.npmjs.com/package/buffer-reverse) - Reverse a buffer - [`buffer-xor`](https://www.npmjs.com/package/buffer-xor) - Bitwise xor a buffer - [`is-buffer`](https://www.npmjs.com/package/is-buffer) - Determine if an object is a Buffer without including the whole `Buffer` package ## conversion packages ### convert typed array to buffer Use [`typedarray-to-buffer`](https://www.npmjs.com/package/typedarray-to-buffer) to convert any kind of typed array to a `Buffer`. Does not perform a copy, so it's super fast. ### convert buffer to typed array `Buffer` is a subclass of `Uint8Array` (which is a typed array). So there is no need to explicitly convert to typed array. Just use the buffer as a `Uint8Array`. ### convert blob to buffer Use [`blob-to-buffer`](https://www.npmjs.com/package/blob-to-buffer) to convert a `Blob` to a `Buffer`. ### convert buffer to blob To convert a `Buffer` to a `Blob`, use the `Blob` constructor: ```js var blob = new Blob([ buffer ]) ``` Optionally, specify a mimetype: ```js var blob = new Blob([ buffer ], { type: 'text/html' }) ``` ### convert arraybuffer to buffer To convert an `ArrayBuffer` to a `Buffer`, use the `Buffer.from` function. Does not perform a copy, so it's super fast. ```js var buffer = Buffer.from(arrayBuffer) ``` ### convert buffer to arraybuffer To convert a `Buffer` to an `ArrayBuffer`, use the `.buffer` property (which is present on all `Uint8Array` objects): ```js var arrayBuffer = buffer.buffer.slice( buffer.byteOffset, buffer.byteOffset + buffer.byteLength ) ``` Alternatively, use the [`to-arraybuffer`](https://www.npmjs.com/package/to-arraybuffer) module. ## performance See perf tests in `/perf`. `BrowserBuffer` is the browser `buffer` module (this repo). `Uint8Array` is included as a sanity check (since `BrowserBuffer` uses `Uint8Array` under the hood, `Uint8Array` will always be at least a bit faster). Finally, `NodeBuffer` is the node.js buffer module, which is included to compare against. NOTE: Performance has improved since these benchmarks were taken. PR welcome to update the README. ### Chrome 38 | Method | Operations | Accuracy | Sampled | Fastest | |:-------|:-----------|:---------|:--------|:-------:| | BrowserBuffer#bracket-notation | 11,457,464 ops/sec | ±0.86% | 66 | ✓ | | Uint8Array#bracket-notation | 10,824,332 ops/sec | ±0.74% | 65 | | | | | | | | BrowserBuffer#concat | 450,532 ops/sec | ±0.76% | 68 | | | Uint8Array#concat | 1,368,911 ops/sec | ±1.50% | 62 | ✓ | | | | | | | BrowserBuffer#copy(16000) | 903,001 ops/sec | ±0.96% | 67 | | | Uint8Array#copy(16000) | 1,422,441 ops/sec | ±1.04% | 66 | ✓ | | | | | | | BrowserBuffer#copy(16) | 11,431,358 ops/sec | ±0.46% | 69 | | | Uint8Array#copy(16) | 13,944,163 ops/sec | ±1.12% | 68 | ✓ | | | | | | | BrowserBuffer#new(16000) | 106,329 ops/sec | ±6.70% | 44 | | | Uint8Array#new(16000) | 131,001 ops/sec | ±2.85% | 31 | ✓ | | | | | | | BrowserBuffer#new(16) | 1,554,491 ops/sec | ±1.60% | 65 | | | Uint8Array#new(16) | 6,623,930 ops/sec | ±1.66% | 65 | ✓ | | | | | | | BrowserBuffer#readDoubleBE | 112,830 ops/sec | ±0.51% | 69 | ✓ | | DataView#getFloat64 | 93,500 ops/sec | ±0.57% | 68 | | | | | | | | BrowserBuffer#readFloatBE | 146,678 ops/sec | ±0.95% | 68 | ✓ | | DataView#getFloat32 | 99,311 ops/sec | ±0.41% | 67 | | | | | | | | BrowserBuffer#readUInt32LE | 843,214 ops/sec | ±0.70% | 69 | ✓ | | DataView#getUint32 | 103,024 ops/sec | ±0.64% | 67 | | | | | | | | BrowserBuffer#slice | 1,013,941 ops/sec | ±0.75% | 67 | | | Uint8Array#subarray | 1,903,928 ops/sec | ±0.53% | 67 | ✓ | | | | | | | BrowserBuffer#writeFloatBE | 61,387 ops/sec | ±0.90% | 67 | | | DataView#setFloat32 | 141,249 ops/sec | ±0.40% | 66 | ✓ | ### Firefox 33 | Method | Operations | Accuracy | Sampled | Fastest | |:-------|:-----------|:---------|:--------|:-------:| | BrowserBuffer#bracket-notation | 20,800,421 ops/sec | ±1.84% | 60 | | | Uint8Array#bracket-notation | 20,826,235 ops/sec | ±2.02% | 61 | ✓ | | | | | | | BrowserBuffer#concat | 153,076 ops/sec | ±2.32% | 61 | | | Uint8Array#concat | 1,255,674 ops/sec | ±8.65% | 52 | ✓ | | | | | | | BrowserBuffer#copy(16000) | 1,105,312 ops/sec | ±1.16% | 63 | | | Uint8Array#copy(16000) | 1,615,911 ops/sec | ±0.55% | 66 | ✓ | | | | | | | BrowserBuffer#copy(16) | 16,357,599 ops/sec | ±0.73% | 68 | | | Uint8Array#copy(16) | 31,436,281 ops/sec | ±1.05% | 68 | ✓ | | | | | | | BrowserBuffer#new(16000) | 52,995 ops/sec | ±6.01% | 35 | | | Uint8Array#new(16000) | 87,686 ops/sec | ±5.68% | 45 | ✓ | | | | | | | BrowserBuffer#new(16) | 252,031 ops/sec | ±1.61% | 66 | | | Uint8Array#new(16) | 8,477,026 ops/sec | ±0.49% | 68 | ✓ | | | | | | | BrowserBuffer#readDoubleBE | 99,871 ops/sec | ±0.41% | 69 | | | DataView#getFloat64 | 285,663 ops/sec | ±0.70% | 68 | ✓ | | | | | | | BrowserBuffer#readFloatBE | 115,540 ops/sec | ±0.42% | 69 | | | DataView#getFloat32 | 288,722 ops/sec | ±0.82% | 68 | ✓ | | | | | | | BrowserBuffer#readUInt32LE | 633,926 ops/sec | ±1.08% | 67 | ✓ | | DataView#getUint32 | 294,808 ops/sec | ±0.79% | 64 | | | | | | | | BrowserBuffer#slice | 349,425 ops/sec | ±0.46% | 69 | | | Uint8Array#subarray | 5,965,819 ops/sec | ±0.60% | 65 | ✓ | | | | | | | BrowserBuffer#writeFloatBE | 59,980 ops/sec | ±0.41% | 67 | | | DataView#setFloat32 | 317,634 ops/sec | ±0.63% | 68 | ✓ | ### Safari 8 | Method | Operations | Accuracy | Sampled | Fastest | |:-------|:-----------|:---------|:--------|:-------:| | BrowserBuffer#bracket-notation | 10,279,729 ops/sec | ±2.25% | 56 | ✓ | | Uint8Array#bracket-notation | 10,030,767 ops/sec | ±2.23% | 59 | | | | | | | | BrowserBuffer#concat | 144,138 ops/sec | ±1.38% | 65 | | | Uint8Array#concat | 4,950,764 ops/sec | ±1.70% | 63 | ✓ | | | | | | | BrowserBuffer#copy(16000) | 1,058,548 ops/sec | ±1.51% | 64 | | | Uint8Array#copy(16000) | 1,409,666 ops/sec | ±1.17% | 65 | ✓ | | | | | | | BrowserBuffer#copy(16) | 6,282,529 ops/sec | ±1.88% | 58 | | | Uint8Array#copy(16) | 11,907,128 ops/sec | ±2.87% | 58 | ✓ | | | | | | | BrowserBuffer#new(16000) | 101,663 ops/sec | ±3.89% | 57 | | | Uint8Array#new(16000) | 22,050,818 ops/sec | ±6.51% | 46 | ✓ | | | | | | | BrowserBuffer#new(16) | 176,072 ops/sec | ±2.13% | 64 | | | Uint8Array#new(16) | 24,385,731 ops/sec | ±5.01% | 51 | ✓ | | | | | | | BrowserBuffer#readDoubleBE | 41,341 ops/sec | ±1.06% | 67 | | | DataView#getFloat64 | 322,280 ops/sec | ±0.84% | 68 | ✓ | | | | | | | BrowserBuffer#readFloatBE | 46,141 ops/sec | ±1.06% | 65 | | | DataView#getFloat32 | 337,025 ops/sec | ±0.43% | 69 | ✓ | | | | | | | BrowserBuffer#readUInt32LE | 151,551 ops/sec | ±1.02% | 66 | | | DataView#getUint32 | 308,278 ops/sec | ±0.94% | 67 | ✓ | | | | | | | BrowserBuffer#slice | 197,365 ops/sec | ±0.95% | 66 | | | Uint8Array#subarray | 9,558,024 ops/sec | ±3.08% | 58 | ✓ | | | | | | | BrowserBuffer#writeFloatBE | 17,518 ops/sec | ±1.03% | 63 | | | DataView#setFloat32 | 319,751 ops/sec | ±0.48% | 68 | ✓ | ### Node 0.11.14 | Method | Operations | Accuracy | Sampled | Fastest | |:-------|:-----------|:---------|:--------|:-------:| | BrowserBuffer#bracket-notation | 10,489,828 ops/sec | ±3.25% | 90 | | | Uint8Array#bracket-notation | 10,534,884 ops/sec | ±0.81% | 92 | ✓ | | NodeBuffer#bracket-notation | 10,389,910 ops/sec | ±0.97% | 87 | | | | | | | | BrowserBuffer#concat | 487,830 ops/sec | ±2.58% | 88 | | | Uint8Array#concat | 1,814,327 ops/sec | ±1.28% | 88 | ✓ | | NodeBuffer#concat | 1,636,523 ops/sec | ±1.88% | 73 | | | | | | | | BrowserBuffer#copy(16000) | 1,073,665 ops/sec | ±0.77% | 90 | | | Uint8Array#copy(16000) | 1,348,517 ops/sec | ±0.84% | 89 | ✓ | | NodeBuffer#copy(16000) | 1,289,533 ops/sec | ±0.82% | 93 | | | | | | | | BrowserBuffer#copy(16) | 12,782,706 ops/sec | ±0.74% | 85 | | | Uint8Array#copy(16) | 14,180,427 ops/sec | ±0.93% | 92 | ✓ | | NodeBuffer#copy(16) | 11,083,134 ops/sec | ±1.06% | 89 | | | | | | | | BrowserBuffer#new(16000) | 141,678 ops/sec | ±3.30% | 67 | | | Uint8Array#new(16000) | 161,491 ops/sec | ±2.96% | 60 | | | NodeBuffer#new(16000) | 292,699 ops/sec | ±3.20% | 55 | ✓ | | | | | | | BrowserBuffer#new(16) | 1,655,466 ops/sec | ±2.41% | 82 | | | Uint8Array#new(16) | 14,399,926 ops/sec | ±0.91% | 94 | ✓ | | NodeBuffer#new(16) | 3,894,696 ops/sec | ±0.88% | 92 | | | | | | | | BrowserBuffer#readDoubleBE | 109,582 ops/sec | ±0.75% | 93 | ✓ | | DataView#getFloat64 | 91,235 ops/sec | ±0.81% | 90 | | | NodeBuffer#readDoubleBE | 88,593 ops/sec | ±0.96% | 81 | | | | | | | | BrowserBuffer#readFloatBE | 139,854 ops/sec | ±1.03% | 85 | ✓ | | DataView#getFloat32 | 98,744 ops/sec | ±0.80% | 89 | | | NodeBuffer#readFloatBE | 92,769 ops/sec | ±0.94% | 93 | | | | | | | | BrowserBuffer#readUInt32LE | 710,861 ops/sec | ±0.82% | 92 | | | DataView#getUint32 | 117,893 ops/sec | ±0.84% | 91 | | | NodeBuffer#readUInt32LE | 851,412 ops/sec | ±0.72% | 93 | ✓ | | | | | | | BrowserBuffer#slice | 1,673,877 ops/sec | ±0.73% | 94 | | | Uint8Array#subarray | 6,919,243 ops/sec | ±0.67% | 90 | ✓ | | NodeBuffer#slice | 4,617,604 ops/sec | ±0.79% | 93 | | | | | | | | BrowserBuffer#writeFloatBE | 66,011 ops/sec | ±0.75% | 93 | | | DataView#setFloat32 | 127,760 ops/sec | ±0.72% | 93 | ✓ | | NodeBuffer#writeFloatBE | 103,352 ops/sec | ±0.83% | 93 | | ### iojs 1.8.1 | Method | Operations | Accuracy | Sampled | Fastest | |:-------|:-----------|:---------|:--------|:-------:| | BrowserBuffer#bracket-notation | 10,990,488 ops/sec | ±1.11% | 91 | | | Uint8Array#bracket-notation | 11,268,757 ops/sec | ±0.65% | 97 | | | NodeBuffer#bracket-notation | 11,353,260 ops/sec | ±0.83% | 94 | ✓ | | | | | | | BrowserBuffer#concat | 378,954 ops/sec | ±0.74% | 94 | | | Uint8Array#concat | 1,358,288 ops/sec | ±0.97% | 87 | | | NodeBuffer#concat | 1,934,050 ops/sec | ±1.11% | 78 | ✓ | | | | | | | BrowserBuffer#copy(16000) | 894,538 ops/sec | ±0.56% | 84 | | | Uint8Array#copy(16000) | 1,442,656 ops/sec | ±0.71% | 96 | | | NodeBuffer#copy(16000) | 1,457,898 ops/sec | ±0.53% | 92 | ✓ | | | | | | | BrowserBuffer#copy(16) | 12,870,457 ops/sec | ±0.67% | 95 | | | Uint8Array#copy(16) | 16,643,989 ops/sec | ±0.61% | 93 | ✓ | | NodeBuffer#copy(16) | 14,885,848 ops/sec | ±0.74% | 94 | | | | | | | | BrowserBuffer#new(16000) | 109,264 ops/sec | ±4.21% | 63 | | | Uint8Array#new(16000) | 138,916 ops/sec | ±1.87% | 61 | | | NodeBuffer#new(16000) | 281,449 ops/sec | ±3.58% | 51 | ✓ | | | | | | | BrowserBuffer#new(16) | 1,362,935 ops/sec | ±0.56% | 99 | | | Uint8Array#new(16) | 6,193,090 ops/sec | ±0.64% | 95 | ✓ | | NodeBuffer#new(16) | 4,745,425 ops/sec | ±1.56% | 90 | | | | | | | | BrowserBuffer#readDoubleBE | 118,127 ops/sec | ±0.59% | 93 | ✓ | | DataView#getFloat64 | 107,332 ops/sec | ±0.65% | 91 | | | NodeBuffer#readDoubleBE | 116,274 ops/sec | ±0.94% | 95 | | | | | | | | BrowserBuffer#readFloatBE | 150,326 ops/sec | ±0.58% | 95 | ✓ | | DataView#getFloat32 | 110,541 ops/sec | ±0.57% | 98 | | | NodeBuffer#readFloatBE | 121,599 ops/sec | ±0.60% | 87 | | | | | | | | BrowserBuffer#readUInt32LE | 814,147 ops/sec | ±0.62% | 93 | | | DataView#getUint32 | 137,592 ops/sec | ±0.64% | 90 | | | NodeBuffer#readUInt32LE | 931,650 ops/sec | ±0.71% | 96 | ✓ | | | | | | | BrowserBuffer#slice | 878,590 ops/sec | ±0.68% | 93 | | | Uint8Array#subarray | 2,843,308 ops/sec | ±1.02% | 90 | | | NodeBuffer#slice | 4,998,316 ops/sec | ±0.68% | 90 | ✓ | | | | | | | BrowserBuffer#writeFloatBE | 65,927 ops/sec | ±0.74% | 93 | | | DataView#setFloat32 | 139,823 ops/sec | ±0.97% | 89 | ✓ | | NodeBuffer#writeFloatBE | 135,763 ops/sec | ±0.65% | 96 | | | | | | | ## Testing the project First, install the project: npm install Then, to run tests in Node.js, run: npm run test-node To test locally in a browser, you can run: npm run test-browser-es5-local # For ES5 browsers that don't support ES6 npm run test-browser-es6-local # For ES6 compliant browsers This will print out a URL that you can then open in a browser to run the tests, using [airtap](https://www.npmjs.com/package/airtap). To run automated browser tests using Saucelabs, ensure that your `SAUCE_USERNAME` and `SAUCE_ACCESS_KEY` environment variables are set, then run: npm test This is what's run in Travis, to check against various browsers. The list of browsers is kept in the `bin/airtap-es5.yml` and `bin/airtap-es6.yml` files. ## JavaScript Standard Style This module uses [JavaScript Standard Style](https://github.com/feross/standard). [](https://github.com/feross/standard) To test that the code conforms to the style, `npm install` and run: ./node_modules/.bin/standard ## credit This was originally forked from [buffer-browserify](https://github.com/toots/buffer-browserify). ## Security Policies and Procedures The `buffer` team and community take all security bugs in `buffer` seriously. Please see our [security policies and procedures](https://github.com/feross/security) document to learn how to report issues. ## license MIT. Copyright (C) [Feross Aboukhadijeh](http://feross.org), and other contributors. Originally forked from an MIT-licensed module by Romain Beauxis. # MD5 [](http://travis-ci.org/pvorb/node-md5) [](http://npm-stat.com/charts.html?package=md5) a JavaScript function for hashing messages with MD5. node-md5 is being sponsored by the following tool; please help to support us by taking a look and signing up to a free trial <a href="https://tracking.gitads.io/?repo=node-md5"><img src="https://images.gitads.io/node-md5" alt="GitAds"/></a> ## Installation You can use this package on the server side as well as the client side. ### [Node.js](http://nodejs.org/): ~~~ npm install md5 ~~~ ## API ~~~ javascript md5(message) ~~~ * `message` -- `String`, `Buffer`, `Array` or `Uint8Array` * returns `String` ## Usage ~~~ javascript var md5 = require('md5'); console.log(md5('message')); ~~~ This will print the following ~~~ 78e731027d8fd50ed642340b7c9a63b3 ~~~ It supports buffers, too ~~~ javascript var fs = require('fs'); var md5 = require('md5'); fs.readFile('example.txt', function(err, buf) { console.log(md5(buf)); }); ~~~ ## Versions Before version 2.0.0 there were two packages called md5 on npm, one lowercase, one uppercase (the one you're looking at). As of version 2.0.0, all new versions of this module will go to lowercase [md5](https://www.npmjs.com/package/md5) on npm. To use the correct version, users of this module will have to change their code from `require('MD5')` to `require('md5')` if they want to use versions >= 2.0.0. ## Bugs and Issues If you encounter any bugs or issues, feel free to open an issue at [github](https://github.com/pvorb/node-md5/issues). ## Credits This package is based on the work of Jeff Mott, who did a pure JS implementation of the MD5 algorithm that was published by Ronald L. Rivest in 1991. I needed a npm package of the algorithm, so I used Jeff’s implementation for this package. The original implementation can be found in the [CryptoJS](http://code.google.com/p/crypto-js/) project. ## License ~~~ Copyright © 2011-2015, Paul Vorbach. Copyright © 2009, Jeff Mott. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name Crypto-JS nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ~~~ # tar-stream tar-stream is a streaming tar parser and generator and nothing else. It is streams2 and operates purely using streams which means you can easily extract/parse tarballs without ever hitting the file system. Note that you still need to gunzip your data if you have a `.tar.gz`. We recommend using [gunzip-maybe](https://github.com/mafintosh/gunzip-maybe) in conjunction with this. ``` npm install tar-stream ``` [](http://travis-ci.org/mafintosh/tar-stream) [](http://opensource.org/licenses/MIT) ## Usage tar-stream exposes two streams, [pack](https://github.com/mafintosh/tar-stream#packing) which creates tarballs and [extract](https://github.com/mafintosh/tar-stream#extracting) which extracts tarballs. To [modify an existing tarball](https://github.com/mafintosh/tar-stream#modifying-existing-tarballs) use both. It implementes USTAR with additional support for pax extended headers. It should be compatible with all popular tar distributions out there (gnutar, bsdtar etc) ## Related If you want to pack/unpack directories on the file system check out [tar-fs](https://github.com/mafintosh/tar-fs) which provides file system bindings to this module. ## Packing To create a pack stream use `tar.pack()` and call `pack.entry(header, [callback])` to add tar entries. ``` js var tar = require('tar-stream') var pack = tar.pack() // pack is a streams2 stream // add a file called my-test.txt with the content "Hello World!" pack.entry({ name: 'my-test.txt' }, 'Hello World!') // add a file called my-stream-test.txt from a stream var entry = pack.entry({ name: 'my-stream-test.txt', size: 11 }, function(err) { // the stream was added // no more entries pack.finalize() }) entry.write('hello') entry.write(' ') entry.write('world') entry.end() // pipe the pack stream somewhere pack.pipe(process.stdout) ``` ## Extracting To extract a stream use `tar.extract()` and listen for `extract.on('entry', (header, stream, next) )` ``` js var extract = tar.extract() extract.on('entry', function(header, stream, next) { // header is the tar header // stream is the content body (might be an empty stream) // call next when you are done with this entry stream.on('end', function() { next() // ready for next entry }) stream.resume() // just auto drain the stream }) extract.on('finish', function() { // all entries read }) pack.pipe(extract) ``` The tar archive is streamed sequentially, meaning you **must** drain each entry's stream as you get them or else the main extract stream will receive backpressure and stop reading. ## Headers The header object using in `entry` should contain the following properties. Most of these values can be found by stat'ing a file. ``` js { name: 'path/to/this/entry.txt', size: 1314, // entry size. defaults to 0 mode: 0o644, // entry mode. defaults to to 0o755 for dirs and 0o644 otherwise mtime: new Date(), // last modified date for entry. defaults to now. type: 'file', // type of entry. defaults to file. can be: // file | link | symlink | directory | block-device // character-device | fifo | contiguous-file linkname: 'path', // linked file name uid: 0, // uid of entry owner. defaults to 0 gid: 0, // gid of entry owner. defaults to 0 uname: 'maf', // uname of entry owner. defaults to null gname: 'staff', // gname of entry owner. defaults to null devmajor: 0, // device major version. defaults to 0 devminor: 0 // device minor version. defaults to 0 } ``` ## Modifying existing tarballs Using tar-stream it is easy to rewrite paths / change modes etc in an existing tarball. ``` js var extract = tar.extract() var pack = tar.pack() var path = require('path') extract.on('entry', function(header, stream, callback) { // let's prefix all names with 'tmp' header.name = path.join('tmp', header.name) // write the new entry to the pack stream stream.pipe(pack.entry(header, callback)) }) extract.on('finish', function() { // all entries done - lets finalize it pack.finalize() }) // pipe the old tarball to the extractor oldTarballStream.pipe(extract) // pipe the new tarball the another stream pack.pipe(newTarballStream) ``` ## Saving tarball to fs ``` js var fs = require('fs') var tar = require('tar-stream') var pack = tar.pack() // pack is a streams2 stream var path = 'YourTarBall.tar' var yourTarball = fs.createWriteStream(path) // add a file called YourFile.txt with the content "Hello World!" pack.entry({name: 'YourFile.txt'}, 'Hello World!', function (err) { if (err) throw err pack.finalize() }) // pipe the pack stream to your file pack.pipe(yourTarball) yourTarball.on('close', function () { console.log(path + ' has been written') fs.stat(path, function(err, stats) { if (err) throw err console.log(stats) console.log('Got file info successfully!') }) }) ``` ## Performance [See tar-fs for a performance comparison with node-tar](https://github.com/mafintosh/tar-fs/blob/master/README.md#performance) # License MIT # ncp - Asynchronous recursive file & directory copying [](http://travis-ci.org/AvianFlu/ncp) Think `cp -r`, but pure node, and asynchronous. `ncp` can be used both as a CLI tool and programmatically. ## Command Line usage Usage is simple: `ncp [source] [dest] [--limit=concurrency limit] [--filter=filter] --stopOnErr` The 'filter' is a Regular Expression - matched files will be copied. The 'concurrency limit' is an integer that represents how many pending file system requests `ncp` has at a time. 'stoponerr' is a boolean flag that will tell `ncp` to stop immediately if any errors arise, rather than attempting to continue while logging errors. The default behavior is to complete as many copies as possible, logging errors along the way. If there are no errors, `ncp` will output `done.` when complete. If there are errors, the error messages will be logged to `stdout` and to `./ncp-debug.log`, and the copy operation will attempt to continue. ## Programmatic usage Programmatic usage of `ncp` is just as simple. The only argument to the completion callback is a possible error. ```javascript var ncp = require('ncp').ncp; ncp.limit = 16; ncp(source, destination, function (err) { if (err) { return console.error(err); } console.log('done!'); }); ``` You can also call ncp like `ncp(source, destination, options, callback)`. `options` should be a dictionary. Currently, such options are available: * `options.filter` - a `RegExp` instance, against which each file name is tested to determine whether to copy it or not, or a function taking single parameter: copied file name, returning `true` or `false`, determining whether to copy file or not. * `options.transform` - a function: `function (read, write) { read.pipe(write) }` used to apply streaming transforms while copying. * `options.clobber` - boolean=true. if set to false, `ncp` will not overwrite destination files that already exist. * `options.dereference` - boolean=false. If set to true, `ncp` will follow symbolic links. For example, a symlink in the source tree pointing to a regular file will become a regular file in the destination tree. Broken symlinks will result in errors. * `options.stopOnErr` - boolean=false. If set to true, `ncp` will behave like `cp -r`, and stop on the first error it encounters. By default, `ncp` continues copying, logging all errors and returning an array. * `options.errs` - stream. If `options.stopOnErr` is `false`, a stream can be provided, and errors will be written to this stream. Please open an issue if any bugs arise. As always, I accept (working) pull requests, and refunds are available at `/dev/null`. iMurmurHash.js ============== An incremental implementation of the MurmurHash3 (32-bit) hashing algorithm for JavaScript based on [Gary Court's implementation](https://github.com/garycourt/murmurhash-js) with [kazuyukitanimura's modifications](https://github.com/kazuyukitanimura/murmurhash-js). This version works significantly faster than the non-incremental version if you need to hash many small strings into a single hash, since string concatenation (to build the single string to pass the non-incremental version) is fairly costly. In one case tested, using the incremental version was about 50% faster than concatenating 5-10 strings and then hashing. Installation ------------ To use iMurmurHash in the browser, [download the latest version](https://raw.github.com/jensyt/imurmurhash-js/master/imurmurhash.min.js) and include it as a script on your site. ```html <script type="text/javascript" src="/scripts/imurmurhash.min.js"></script> <script> // Your code here, access iMurmurHash using the global object MurmurHash3 </script> ``` --- To use iMurmurHash in Node.js, install the module using NPM: ```bash npm install imurmurhash ``` Then simply include it in your scripts: ```javascript MurmurHash3 = require('imurmurhash'); ``` Quick Example ------------- ```javascript // Create the initial hash var hashState = MurmurHash3('string'); // Incrementally add text hashState.hash('more strings'); hashState.hash('even more strings'); // All calls can be chained if desired hashState.hash('and').hash('some').hash('more'); // Get a result hashState.result(); // returns 0xe4ccfe6b ``` Functions --------- ### MurmurHash3 ([string], [seed]) Get a hash state object, optionally initialized with the given _string_ and _seed_. _Seed_ must be a positive integer if provided. Calling this function without the `new` keyword will return a cached state object that has been reset. This is safe to use as long as the object is only used from a single thread and no other hashes are created while operating on this one. If this constraint cannot be met, you can use `new` to create a new state object. For example: ```javascript // Use the cached object, calling the function again will return the same // object (but reset, so the current state would be lost) hashState = MurmurHash3(); ... // Create a new object that can be safely used however you wish. Calling the // function again will simply return a new state object, and no state loss // will occur, at the cost of creating more objects. hashState = new MurmurHash3(); ``` Both methods can be mixed however you like if you have different use cases. --- ### MurmurHash3.prototype.hash (string) Incrementally add _string_ to the hash. This can be called as many times as you want for the hash state object, including after a call to `result()`. Returns `this` so calls can be chained. --- ### MurmurHash3.prototype.result () Get the result of the hash as a 32-bit positive integer. This performs the tail and finalizer portions of the algorithm, but does not store the result in the state object. This means that it is perfectly safe to get results and then continue adding strings via `hash`. ```javascript // Do the whole string at once MurmurHash3('this is a test string').result(); // 0x70529328 // Do part of the string, get a result, then the other part var m = MurmurHash3('this is a'); m.result(); // 0xbfc4f834 m.hash(' test string').result(); // 0x70529328 (same as above) ``` --- ### MurmurHash3.prototype.reset ([seed]) Reset the state object for reuse, optionally using the given _seed_ (defaults to 0 like the constructor). Returns `this` so calls can be chained. --- License (MIT) ------------- Copyright (c) 2013 Gary Court, Jens Taylor Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. [](https://www.npmjs.com/package/as-bignum)[](https://travis-ci.com/MaxGraey/as-bignum)[](LICENSE.md) ## WebAssembly fixed length big numbers written on [AssemblyScript](https://github.com/AssemblyScript/assemblyscript) ### Status: Work in progress Provide wide numeric types such as `u128`, `u256`, `i128`, `i256` and fixed points and also its arithmetic operations. Namespace `safe` contain equivalents with overflow/underflow traps. All kind of types pretty useful for economical and cryptographic usages and provide deterministic behavior. ### Install > yarn add as-bignum or > npm i as-bignum ### Usage via AssemblyScript ```ts import { u128 } from "as-bignum"; declare function logF64(value: f64): void; declare function logU128(hi: u64, lo: u64): void; var a = u128.One; var b = u128.from(-32); // same as u128.from<i32>(-32) var c = new u128(0x1, -0xF); var d = u128.from(0x0123456789ABCDEF); // same as u128.from<i64>(0x0123456789ABCDEF) var e = u128.from('0x0123456789ABCDEF01234567'); var f = u128.fromString('11100010101100101', 2); // same as u128.from('0b11100010101100101') var r = d / c + (b << 5) + e; logF64(r.as<f64>()); logU128(r.hi, r.lo); ``` ### Usage via JavaScript/Typescript ```ts TODO ``` ### List of types - [x] [`u128`](https://github.com/MaxGraey/as-bignum/blob/master/assembly/integer/u128.ts) unsigned type (tested) - [ ] [`u256`](https://github.com/MaxGraey/as-bignum/blob/master/assembly/integer/u256.ts) unsigned type (very basic) - [ ] `i128` signed type - [ ] `i256` signed type --- - [x] [`safe.u128`](https://github.com/MaxGraey/as-bignum/blob/master/assembly/integer/safe/u128.ts) unsigned type (tested) - [ ] `safe.u256` unsigned type - [ ] `safe.i128` signed type - [ ] `safe.i256` signed type --- - [ ] [`fp128<Q>`](https://github.com/MaxGraey/as-bignum/blob/master/assembly/fixed/fp128.ts) generic fixed point signed type٭ (very basic for now) - [ ] `fp256<Q>` generic fixed point signed type٭ --- - [ ] `safe.fp128<Q>` generic fixed point signed type٭ - [ ] `safe.fp256<Q>` generic fixed point signed type٭ ٭ _typename_ `Q` _is a type representing count of fractional bits_ # Regular Expression Tokenizer Tokenizes strings that represent a regular expressions. [](http://travis-ci.org/fent/ret.js) [](https://david-dm.org/fent/ret.js) [](https://codecov.io/gh/fent/ret.js) # Usage ```js var ret = require('ret'); var tokens = ret(/foo|bar/.source); ``` `tokens` will contain the following object ```js { "type": ret.types.ROOT "options": [ [ { "type": ret.types.CHAR, "value", 102 }, { "type": ret.types.CHAR, "value", 111 }, { "type": ret.types.CHAR, "value", 111 } ], [ { "type": ret.types.CHAR, "value", 98 }, { "type": ret.types.CHAR, "value", 97 }, { "type": ret.types.CHAR, "value", 114 } ] ] } ``` # Token Types `ret.types` is a collection of the various token types exported by ret. ### ROOT Only used in the root of the regexp. This is needed due to the posibility of the root containing a pipe `|` character. In that case, the token will have an `options` key that will be an array of arrays of tokens. If not, it will contain a `stack` key that is an array of tokens. ```js { "type": ret.types.ROOT, "stack": [token1, token2...], } ``` ```js { "type": ret.types.ROOT, "options" [ [token1, token2...], [othertoken1, othertoken2...] ... ], } ``` ### GROUP Groups contain tokens that are inside of a parenthesis. If the group begins with `?` followed by another character, it's a special type of group. A ':' tells the group not to be remembered when `exec` is used. '=' means the previous token matches only if followed by this group, and '!' means the previous token matches only if NOT followed. Like root, it can contain an `options` key instead of `stack` if there is a pipe. ```js { "type": ret.types.GROUP, "remember" true, "followedBy": false, "notFollowedBy": false, "stack": [token1, token2...], } ``` ```js { "type": ret.types.GROUP, "remember" true, "followedBy": false, "notFollowedBy": false, "options" [ [token1, token2...], [othertoken1, othertoken2...] ... ], } ``` ### POSITION `\b`, `\B`, `^`, and `$` specify positions in the regexp. ```js { "type": ret.types.POSITION, "value": "^", } ``` ### SET Contains a key `set` specifying what tokens are allowed and a key `not` specifying if the set should be negated. A set can contain other sets, ranges, and characters. ```js { "type": ret.types.SET, "set": [token1, token2...], "not": false, } ``` ### RANGE Used in set tokens to specify a character range. `from` and `to` are character codes. ```js { "type": ret.types.RANGE, "from": 97, "to": 122, } ``` ### REPETITION ```js { "type": ret.types.REPETITION, "min": 0, "max": Infinity, "value": token, } ``` ### REFERENCE References a group token. `value` is 1-9. ```js { "type": ret.types.REFERENCE, "value": 1, } ``` ### CHAR Represents a single character token. `value` is the character code. This might seem a bit cluttering instead of concatenating characters together. But since repetition tokens only repeat the last token and not the last clause like the pipe, it's simpler to do it this way. ```js { "type": ret.types.CHAR, "value": 123, } ``` ## Errors ret.js will throw errors if given a string with an invalid regular expression. All possible errors are * Invalid group. When a group with an immediate `?` character is followed by an invalid character. It can only be followed by `!`, `=`, or `:`. Example: `/(?_abc)/` * Nothing to repeat. Thrown when a repetitional token is used as the first token in the current clause, as in right in the beginning of the regexp or group, or right after a pipe. Example: `/foo|?bar/`, `/{1,3}foo|bar/`, `/foo(+bar)/` * Unmatched ). A group was not opened, but was closed. Example: `/hello)2u/` * Unterminated group. A group was not closed. Example: `/(1(23)4/` * Unterminated character class. A custom character set was not closed. Example: `/[abc/` # Install npm install ret # Tests Tests are written with [vows](http://vowsjs.org/) ```bash npm test ``` # License MIT # node-gyp-build > Build tool and bindings loader for [`node-gyp`][node-gyp] that supports prebuilds. ``` npm install node-gyp-build ``` [](https://github.com/prebuild/node-gyp-build/actions/workflows/test.yml) Use together with [`prebuildify`][prebuildify] to easily support prebuilds for your native modules. ## Usage > **Note.** Prebuild names have changed in [`prebuildify@3`][prebuildify] and `node-gyp-build@4`. Please see the documentation below. `node-gyp-build` works similar to [`node-gyp build`][node-gyp] except that it will check if a build or prebuild is present before rebuilding your project. It's main intended use is as an npm install script and bindings loader for native modules that bundle prebuilds using [`prebuildify`][prebuildify]. First add `node-gyp-build` as an install script to your native project ``` js { ... "scripts": { "install": "node-gyp-build" } } ``` Then in your `index.js`, instead of using the [`bindings`](https://www.npmjs.com/package/bindings) module use `node-gyp-build` to load your binding. ``` js var binding = require('node-gyp-build')(__dirname) ``` If you do these two things and bundle prebuilds with [`prebuildify`][prebuildify] your native module will work for most platforms without having to compile on install time AND will work in both node and electron without the need to recompile between usage. Users can override `node-gyp-build` and force compiling by doing `npm install --build-from-source`. Prebuilds will be attempted loaded from `MODULE_PATH/prebuilds/...` and then next `EXEC_PATH/prebuilds/...` (the latter allowing use with `zeit/pkg`) ## Supported prebuild names If so desired you can bundle more specific flavors, for example `musl` builds to support Alpine, or targeting a numbered ARM architecture version. These prebuilds can be bundled in addition to generic prebuilds; `node-gyp-build` will try to find the most specific flavor first. Prebuild filenames are composed of _tags_. The runtime tag takes precedence, as does an `abi` tag over `napi`. For more details on tags, please see [`prebuildify`][prebuildify]. Values for the `libc` and `armv` tags are auto-detected but can be overridden through the `LIBC` and `ARM_VERSION` environment variables, respectively. ## License MIT [prebuildify]: https://github.com/prebuild/prebuildify [node-gyp]: https://www.npmjs.com/package/node-gyp tcp-port-used ============= A simple Node.js module to check if a TCP port is currently in use. It returns a deferred promise from the q library. ## Installation npm install tcp-port-used ## Examples To check a port's state: var tcpPortUsed = require('tcp-port-used'); tcpPortUsed.check(44201, '127.0.0.1') .then(function(inUse) { console.log('Port 44201 usage: '+inUse); }, function(err) { console.error('Error on check:', err.message); }); To wait until a port on localhost is available: tcpPortUsed.waitUntilFree(44203, 500, 4000) .then(function() { console.log('Port 44203 is now free.'); }, function(err) { console.log('Error:', err.message); }); To wait until a port on a host is available: tcpPortUsed.waitUntilFreeOnHost(44203, 'some.host.com', 500, 4000) .then(function() { console.log('Port 44203 on some.host.com is now free.'); }, function(err) { console.log('Error:', err.message); }); To wait until a port on localhost is accepting connections: tcpPortUsed.waitUntilUsed(44204, 500, 4000) .then(function() { console.log('Port 44204 is now in use.'); }, function(err) { console.log('Error:', err.message); }); To wait until a port on a host is accepting connections: tcpPortUsed.waitUntilUsedOnHost(44204, 'some.host.com', 500, 4000) .then(function() { console.log('Port 44204 on some.host.com is now in use.'); }, function(err) { console.log('Error:', err.message); }); To wait until a port on a host is in specific state: var inUse = true; // wait until the port is in use tcpPortUsed.waitForStatus(44204, 'some.host.com', inUse, 500, 4000) .then(function() { console.log('Port 44204 on some.host.com is now in use.'); }, function(err) { console.log('Error:', err.message); }); ## API ### check(port [, host]) Checks if a TCP port is in use by attempting to connect to the port on host. If no host is specified, the module uses '127.0.0.1' (localhost). When the promise is resolved, there is a parameter `inUse`, when true means the port is in use and false means the port is free. **Parameters:** * **Number|Object** *port* The port you are curious to see if available. If an object, must contain all the parameters as properties. * **String** *host* The host name or IP address of the host. Default, if not defined: '127.0.0.1' **Returns:** **Object** A deferred promise from the q module. ### waitUntilFree(port [, retryTimeMs] [, timeOutMs]) Returns a deferred promise and fulfills it only when the localhost socket is free. Will retry on an interval specified in retryTimeMs until the timeout. If not defined the retryTime is 200 ms and the timeout is 2000 ms. **Parameters:** * **Number|Object** *port* a valid TCP port number. If an object must contain all the parameters as properties. * **Number** *[retryTimeMs]* the retry interval in milliseconds - defaultis is 100ms. * **Number** *[timeOutMs]* the amount of time to wait until port is free. Default 300ms. **Returns:** **Object** A deferred promise from the q module. ### waitUntilFreeOnHost(port [, host] [, retryTimeMs] [, timeOutMs]) Returns a deferred promise and fulfills it only when the localhost socket is free. Will retry on an interval specified in retryTimeMs until the timeout. If not defined the retryTime is 200 ms and the timeout is 2000 ms. If the host is not defined, the modules uses the default '127.0.0.1'. **Parameters:** * **Number|Object** *port* a valid TCP port number. If an object, must contain all the parameters as properties. * **String** *host* The host name or IP address of the host. Default, if not defined: '127.0.0.1' * **Number** *[retryTimeMs]* the retry interval in milliseconds - defaultis is 100ms. * **Number** *[timeOutMs]* the amount of time to wait until port is free. Default 300ms. **Returns:** **Object** A deferred promise from the q module. ### waitUntilUsed(port [, retryTimeMs] [, timeOutMs]) Returns a deferred promise and fulfills it only when the socket is accepting connections. Will retry on an interval specified in retryTimeMs until the timeout. If the host is not defined the retryTime is 200 ms and the timeout is 2000 ms. **Parameters:** * **Number|Object** *port* a valid TCP port number. If an object, must contain all the parameters as properties. * **Number** *[retryTimeMs]* the retry interval in milliseconds - defaultis is 100ms. * **Number** *[timeOutMs]* the amount of time to wait until port is free. Default 300ms. **Returns:** **Object** A deferred promise from the q module. ### waitUntilUsedOnHost(port [, host] [, retryTimeMs] [, timeOutMs]) Returns a deferred promise and fulfills it only when the socket is accepting connections. Will retry on an interval specified in retryTimeMs until the timeout. If not defined the retryTime is 200 ms and the timeout is 2000 ms. If the host is not defined the module uses the default '127.0.0.1'. **Parameters:** * **Number|Object** *port* a valid TCP port number. If an object, must contain all the parameters as properties. * **String** *host* The host name or IP address of the host. Default, if not defined: '127.0.0.1' * **Number** *[retryTimeMs]* the retry interval in milliseconds - defaultis is 100ms. * **Number** *[timeOutMs]* the amount of time to wait until port is free. Default 300ms. **Returns:** **Object** A deferred promise from the q module. ### waitForStatus(port, host, status [, retryTimeMs] [, timeOutMs]) Waits until the port on host matches the boolean status in terms of use. If the status is true, the promise defers until the port is in use. If the status is false the promise defers until the port is free. If the host is undefined or null, the module uses the default '127.0.0.1'. Also, if not defined the retryTime is 200 ms and the timeout is 2000 ms. **Parameters:** * **Number** *port* a valid TCP port number. If an object, must contain all the parameters as properties. * **String** *host* The host name or IP address of the host. Default, if not defined: '127.0.0.1' * **Boolean** *status* A boolean describing the condition to wait for in terms of "in use." True indicates wait until the port is in use. False indicates wait until the port is free. * **Number** *[retryTimeMs]* the retry interval in milliseconds - defaultis is 100ms. * **Number** *[timeOutMs]* the amount of time to wait until port is free. Default 300ms. **Returns:** **Object** A deferred promise from the q module. ## License The MIT License (MIT) Copyright (c) 2013 jut-io Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # cacheable-request > Wrap native HTTP requests with RFC compliant cache support [](https://travis-ci.org/lukechilds/cacheable-request) [](https://coveralls.io/github/lukechilds/cacheable-request?branch=master) [](https://www.npmjs.com/package/cacheable-request) [](https://www.npmjs.com/package/cacheable-request) [RFC 7234](http://httpwg.org/specs/rfc7234.html) compliant HTTP caching for native Node.js HTTP/HTTPS requests. Caching works out of the box in memory or is easily pluggable with a wide range of storage adapters. **Note:** This is a low level wrapper around the core HTTP modules, it's not a high level request library. ## Features - Only stores cacheable responses as defined by RFC 7234 - Fresh cache entries are served directly from cache - Stale cache entries are revalidated with `If-None-Match`/`If-Modified-Since` headers - 304 responses from revalidation requests use cached body - Updates `Age` header on cached responses - Can completely bypass cache on a per request basis - In memory cache by default - Official support for Redis, MongoDB, SQLite, PostgreSQL and MySQL storage adapters - Easily plug in your own or third-party storage adapters - If DB connection fails, cache is automatically bypassed ([disabled by default](#optsautomaticfailover)) - Adds cache support to any existing HTTP code with minimal changes - Uses [http-cache-semantics](https://github.com/pornel/http-cache-semantics) internally for HTTP RFC 7234 compliance ## Install ```shell npm install cacheable-request ``` ## Usage ```js const http = require('http'); const CacheableRequest = require('cacheable-request'); // Then instead of const req = http.request('http://example.com', cb); req.end(); // You can do const cacheableRequest = new CacheableRequest(http.request); const cacheReq = cacheableRequest('http://example.com', cb); cacheReq.on('request', req => req.end()); // Future requests to 'example.com' will be returned from cache if still valid // You pass in any other http.request API compatible method to be wrapped with cache support: const cacheableRequest = new CacheableRequest(https.request); const cacheableRequest = new CacheableRequest(electron.net); ``` ## Storage Adapters `cacheable-request` uses [Keyv](https://github.com/lukechilds/keyv) to support a wide range of storage adapters. For example, to use Redis as a cache backend, you just need to install the official Redis Keyv storage adapter: ``` npm install @keyv/redis ``` And then you can pass `CacheableRequest` your connection string: ```js const cacheableRequest = new CacheableRequest(http.request, 'redis://user:pass@localhost:6379'); ``` [View all official Keyv storage adapters.](https://github.com/lukechilds/keyv#official-storage-adapters) Keyv also supports anything that follows the Map API so it's easy to write your own storage adapter or use a third-party solution. e.g The following are all valid storage adapters ```js const storageAdapter = new Map(); // or const storageAdapter = require('./my-storage-adapter'); // or const QuickLRU = require('quick-lru'); const storageAdapter = new QuickLRU({ maxSize: 1000 }); const cacheableRequest = new CacheableRequest(http.request, storageAdapter); ``` View the [Keyv docs](https://github.com/lukechilds/keyv) for more information on how to use storage adapters. ## API ### new cacheableRequest(request, [storageAdapter]) Returns the provided request function wrapped with cache support. #### request Type: `function` Request function to wrap with cache support. Should be [`http.request`](https://nodejs.org/api/http.html#http_http_request_options_callback) or a similar API compatible request function. #### storageAdapter Type: `Keyv storage adapter`<br> Default: `new Map()` A [Keyv](https://github.com/lukechilds/keyv) storage adapter instance, or connection string if using with an official Keyv storage adapter. ### Instance #### cacheableRequest(opts, [cb]) Returns an event emitter. ##### opts Type: `object`, `string` - Any of the default request functions options. - Any [`http-cache-semantics`](https://github.com/kornelski/http-cache-semantics#constructor-options) options. - Any of the following: ###### opts.cache Type: `boolean`<br> Default: `true` If the cache should be used. Setting this to false will completely bypass the cache for the current request. ###### opts.strictTtl Type: `boolean`<br> Default: `false` If set to `true` once a cached resource has expired it is deleted and will have to be re-requested. If set to `false` (default), after a cached resource's TTL expires it is kept in the cache and will be revalidated on the next request with `If-None-Match`/`If-Modified-Since` headers. ###### opts.maxTtl Type: `number`<br> Default: `undefined` Limits TTL. The `number` represents milliseconds. ###### opts.automaticFailover Type: `boolean`<br> Default: `false` When set to `true`, if the DB connection fails we will automatically fallback to a network request. DB errors will still be emitted to notify you of the problem even though the request callback may succeed. ###### opts.forceRefresh Type: `boolean`<br> Default: `false` Forces refreshing the cache. If the response could be retrieved from the cache, it will perform a new request and override the cache instead. ##### cb Type: `function` The callback function which will receive the response as an argument. The response can be either a [Node.js HTTP response stream](https://nodejs.org/api/http.html#http_class_http_incomingmessage) or a [responselike object](https://github.com/lukechilds/responselike). The response will also have a `fromCache` property set with a boolean value. ##### .on('request', request) `request` event to get the request object of the request. **Note:** This event will only fire if an HTTP request is actually made, not when a response is retrieved from cache. However, you should always handle the `request` event to end the request and handle any potential request errors. ##### .on('response', response) `response` event to get the response object from the HTTP request or cache. ##### .on('error', error) `error` event emitted in case of an error with the cache. Errors emitted here will be an instance of `CacheableRequest.RequestError` or `CacheableRequest.CacheError`. You will only ever receive a `RequestError` if the request function throws (normally caused by invalid user input). Normal request errors should be handled inside the `request` event. To properly handle all error scenarios you should use the following pattern: ```js cacheableRequest('example.com', cb) .on('error', err => { if (err instanceof CacheableRequest.CacheError) { handleCacheError(err); // Cache error } else if (err instanceof CacheableRequest.RequestError) { handleRequestError(err); // Request function thrown } }) .on('request', req => { req.on('error', handleRequestError); // Request error emitted req.end(); }); ``` **Note:** Database connection errors are emitted here, however `cacheable-request` will attempt to re-request the resource and bypass the cache on a connection error. Therefore a database connection error doesn't necessarily mean the request won't be fulfilled. ## License MIT © Luke Childs # assemblyscript-json   JSON encoder / decoder for AssemblyScript. Special thanks to https://github.com/MaxGraey/bignum.wasm for basic unit testing infra for AssemblyScript. ## Installation `assemblyscript-json` is available as a [npm package](https://www.npmjs.com/package/assemblyscript-json). You can install `assemblyscript-json` in your AssemblyScript project by running: `npm install --save assemblyscript-json` ## Usage ### Parsing JSON ```typescript import { JSON } from "assemblyscript-json"; // Parse an object using the JSON object let jsonObj: JSON.Obj = <JSON.Obj>(JSON.parse('{"hello": "world", "value": 24}')); // We can then use the .getX functions to read from the object if you know it's type // This will return the appropriate JSON.X value if the key exists, or null if the key does not exist let worldOrNull: JSON.Str | null = jsonObj.getString("hello"); // This will return a JSON.Str or null if (worldOrNull != null) { // use .valueOf() to turn the high level JSON.Str type into a string let world: string = worldOrNull.valueOf(); } let numOrNull: JSON.Num | null = jsonObj.getNum("value"); if (numOrNull != null) { // use .valueOf() to turn the high level JSON.Num type into a f64 let value: f64 = numOrNull.valueOf(); } // If you don't know the value type, get the parent JSON.Value let valueOrNull: JSON.Value | null = jsonObj.getValue("hello"); if (valueOrNull != null) { let value = <JSON.Value>valueOrNull; // Next we could figure out what type we are if(value.isString) { // value.isString would be true, so we can cast to a string let innerString = (<JSON.Str>value).valueOf(); let jsonString = (<JSON.Str>value).stringify(); // Do something with string value } } ``` ### Encoding JSON ```typescript import { JSONEncoder } from "assemblyscript-json"; // Create encoder let encoder = new JSONEncoder(); // Construct necessary object encoder.pushObject("obj"); encoder.setInteger("int", 10); encoder.setString("str", ""); encoder.popObject(); // Get serialized data let json: Uint8Array = encoder.serialize(); // Or get serialized data as string let jsonString: string = encoder.stringify(); assert(jsonString, '"obj": {"int": 10, "str": ""}'); // True! ``` ### Custom JSON Deserializers ```typescript import { JSONDecoder, JSONHandler } from "assemblyscript-json"; // Events need to be received by custom object extending JSONHandler. // NOTE: All methods are optional to implement. class MyJSONEventsHandler extends JSONHandler { setString(name: string, value: string): void { // Handle field } setBoolean(name: string, value: bool): void { // Handle field } setNull(name: string): void { // Handle field } setInteger(name: string, value: i64): void { // Handle field } setFloat(name: string, value: f64): void { // Handle field } pushArray(name: string): bool { // Handle array start // true means that nested object needs to be traversed, false otherwise // Note that returning false means JSONDecoder.startIndex need to be updated by handler return true; } popArray(): void { // Handle array end } pushObject(name: string): bool { // Handle object start // true means that nested object needs to be traversed, false otherwise // Note that returning false means JSONDecoder.startIndex need to be updated by handler return true; } popObject(): void { // Handle object end } } // Create decoder let decoder = new JSONDecoder<MyJSONEventsHandler>(new MyJSONEventsHandler()); // Create a byte buffer of our JSON. NOTE: Deserializers work on UTF8 string buffers. let jsonString = '{"hello": "world"}'; let jsonBuffer = Uint8Array.wrap(String.UTF8.encode(jsonString)); // Parse JSON decoder.deserialize(jsonBuffer); // This will send events to MyJSONEventsHandler ``` Feel free to look through the [tests](https://github.com/nearprotocol/assemblyscript-json/tree/master/assembly/__tests__) for more usage examples. ## Reference Documentation Reference API Documentation can be found in the [docs directory](./docs). ## License [MIT](./LICENSE) ### esutils [](http://travis-ci.org/estools/esutils) esutils ([esutils](http://github.com/estools/esutils)) is utility box for ECMAScript language tools. ### API ### ast #### ast.isExpression(node) Returns true if `node` is an Expression as defined in ECMA262 edition 5.1 section [11](https://es5.github.io/#x11). #### ast.isStatement(node) Returns true if `node` is a Statement as defined in ECMA262 edition 5.1 section [12](https://es5.github.io/#x12). #### ast.isIterationStatement(node) Returns true if `node` is an IterationStatement as defined in ECMA262 edition 5.1 section [12.6](https://es5.github.io/#x12.6). #### ast.isSourceElement(node) Returns true if `node` is a SourceElement as defined in ECMA262 edition 5.1 section [14](https://es5.github.io/#x14). #### ast.trailingStatement(node) Returns `Statement?` if `node` has trailing `Statement`. ```js if (cond) consequent; ``` When taking this `IfStatement`, returns `consequent;` statement. #### ast.isProblematicIfStatement(node) Returns true if `node` is a problematic IfStatement. If `node` is a problematic `IfStatement`, `node` cannot be represented as an one on one JavaScript code. ```js { type: 'IfStatement', consequent: { type: 'WithStatement', body: { type: 'IfStatement', consequent: {type: 'EmptyStatement'} } }, alternate: {type: 'EmptyStatement'} } ``` The above node cannot be represented as a JavaScript code, since the top level `else` alternate belongs to an inner `IfStatement`. ### code #### code.isDecimalDigit(code) Return true if provided code is decimal digit. #### code.isHexDigit(code) Return true if provided code is hexadecimal digit. #### code.isOctalDigit(code) Return true if provided code is octal digit. #### code.isWhiteSpace(code) Return true if provided code is white space. White space characters are formally defined in ECMA262. #### code.isLineTerminator(code) Return true if provided code is line terminator. Line terminator characters are formally defined in ECMA262. #### code.isIdentifierStart(code) Return true if provided code can be the first character of ECMA262 Identifier. They are formally defined in ECMA262. #### code.isIdentifierPart(code) Return true if provided code can be the trailing character of ECMA262 Identifier. They are formally defined in ECMA262. ### keyword #### keyword.isKeywordES5(id, strict) Returns `true` if provided identifier string is a Keyword or Future Reserved Word in ECMA262 edition 5.1. They are formally defined in ECMA262 sections [7.6.1.1](http://es5.github.io/#x7.6.1.1) and [7.6.1.2](http://es5.github.io/#x7.6.1.2), respectively. If the `strict` flag is truthy, this function additionally checks whether `id` is a Keyword or Future Reserved Word under strict mode. #### keyword.isKeywordES6(id, strict) Returns `true` if provided identifier string is a Keyword or Future Reserved Word in ECMA262 edition 6. They are formally defined in ECMA262 sections [11.6.2.1](http://ecma-international.org/ecma-262/6.0/#sec-keywords) and [11.6.2.2](http://ecma-international.org/ecma-262/6.0/#sec-future-reserved-words), respectively. If the `strict` flag is truthy, this function additionally checks whether `id` is a Keyword or Future Reserved Word under strict mode. #### keyword.isReservedWordES5(id, strict) Returns `true` if provided identifier string is a Reserved Word in ECMA262 edition 5.1. They are formally defined in ECMA262 section [7.6.1](http://es5.github.io/#x7.6.1). If the `strict` flag is truthy, this function additionally checks whether `id` is a Reserved Word under strict mode. #### keyword.isReservedWordES6(id, strict) Returns `true` if provided identifier string is a Reserved Word in ECMA262 edition 6. They are formally defined in ECMA262 section [11.6.2](http://ecma-international.org/ecma-262/6.0/#sec-reserved-words). If the `strict` flag is truthy, this function additionally checks whether `id` is a Reserved Word under strict mode. #### keyword.isRestrictedWord(id) Returns `true` if provided identifier string is one of `eval` or `arguments`. They are restricted in strict mode code throughout ECMA262 edition 5.1 and in ECMA262 edition 6 section [12.1.1](http://ecma-international.org/ecma-262/6.0/#sec-identifiers-static-semantics-early-errors). #### keyword.isIdentifierNameES5(id) Return true if provided identifier string is an IdentifierName as specified in ECMA262 edition 5.1 section [7.6](https://es5.github.io/#x7.6). #### keyword.isIdentifierNameES6(id) Return true if provided identifier string is an IdentifierName as specified in ECMA262 edition 6 section [11.6](http://ecma-international.org/ecma-262/6.0/#sec-names-and-keywords). #### keyword.isIdentifierES5(id, strict) Return true if provided identifier string is an Identifier as specified in ECMA262 edition 5.1 section [7.6](https://es5.github.io/#x7.6). If the `strict` flag is truthy, this function additionally checks whether `id` is an Identifier under strict mode. #### keyword.isIdentifierES6(id, strict) Return true if provided identifier string is an Identifier as specified in ECMA262 edition 6 section [12.1](http://ecma-international.org/ecma-262/6.0/#sec-identifiers). If the `strict` flag is truthy, this function additionally checks whether `id` is an Identifier under strict mode. ### License Copyright (C) 2013 [Yusuke Suzuki](http://github.com/Constellation) (twitter: [@Constellation](http://twitter.com/Constellation)) and other contributors. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # axios // core The modules found in `core/` should be modules that are specific to the domain logic of axios. These modules would most likely not make sense to be consumed outside of the axios module, as their logic is too specific. Some examples of core modules are: - Dispatching requests - Requests sent via `adapters/` (see lib/adapters/README.md) - Managing interceptors - Handling config is2 === is2 is a type-checking module for JavaScript to test values. Is does not throw exceptions and every function only returns true or false. Use is2 to validate types in your node.js code. Every function in is2 returns either true of false. ## Installation To install is2, type: $ npm install is2 ## Usage const is = require('is2'); console.log(`1===1 is: ${is.equal(true, 1===1)}`); console.log(`10 is a positive number: ${is.positiveNumber(10)}`); console.log(`11 is an odd number: ${is.oddNumber(11)}`); ## API Each function returns true or false. The names after the '-' are aliases, which provide brevity. Environment: * is.browser() * is.defined(val) - is.def * is.nodejs() - is.node() * is.undefined(val) - is.udef, is.undef Types: * is.array(val) - is.ary, is.arry * is.arrayLike(val) - is.arryLike, is.aryLike, is.arrLike * is.arguments(val) - is.args * is.boolean(val) - is.bool * is.buffer(val) - is.buf, is.buff * is.date(val) * is.error(val) - is.err * is.false(val) * is.function(val) - is.funct, is.fun * is.mongoId - is.objectId, is.objId * is.null(val) * is.nullOrUndefined(val) - is.nullOrUndef * is.number(val) - is.num * is.object(val) - is.obj * is.regExp(val) - is.regexp, is.re * is.string(val) - is.str * is.true(val) * is.uuid(val) Relationships: * is.equal(val, other) - is.eq, is.objEquals * is.hosted(val, host) * is.instanceOf(val, constructor) - is.instOf, is.instanceof * is.matching(val1, val2 [, val3, ...]) - is.match : true if the first arument is strictly equal to any of the subsequent args. * is.objectInstanceof(obj, objType) - is.instOf, is.instanceOf, is.objInstOf, is.objectInstanceOf * is.type(val, type) - is.a * is.enumerator(val, array) - is.enum, is.inArray Object State: * is.empty(val) * is.emptyArguments(val) - is.emptyArgs, is.noArgs * is.emptyArray(val) - is.emptyArry, is.emptyAry, is.emptyArray * is.emptyArrayLike(val) - is.emptyArrLike * is.emptyString(val) - is.emptyStr * is.nonEmptyArray(val) - is.nonEmptyArry, is.nonEmptyAry * is.nonEmptyObject(val) - is.nonEmptyObj * is.emptyObject(val) - is.emptyObj * is.nonEmptyString(val) - is.nonEmptyStr Numeric Types within Number: * is.even(val) - is.evenNum, is.evenNumber * is.decimal(val) - is.decNum, is.dec * is.integer(val) - is.int * is.notANumber(val) - is.nan, is.notANum * is.odd(val) - is.oddNum, is.oddNumber Numeric Type and State: * is.positiveNumber(val) - is.pos, is.positive, is.posNum, is.positiveNum * is.negativeNumber(val) - is.neg, is.negNum, is.negativeNum, is.negativeNumber * is.negativeInteger(val) - is.negativeInt, is.negInt * is.positiveInteger(val) - is.posInt, is.positiveInt Numeric Relationship: * is.divisibleBy(val, other) - is.divisBy, is.divBy * is.greaterOrEqualTo(val, other) - is.ge, is.greaterOrEqual * is.greaterThan(val, other) - is.gt * is.lessThanOrEqualTo(val, other) - is.lessThanOrEq, is.lessThanOrEqual, is.le * is.lessThan(val, other) - is.lt * is.maximum(val, array) - is.max * is.minimum(val, array) - is.min * is.withIn(val, start, finish) - is.within * is.prettyClose(val, comp, precision) - is.closish, is.near Networking: * is.dnsAddress(val) - is.dnsAddr, is.dns * is.emailAddress(val) - is.email, is.emailAddr * is.ipv4Address(val) - is.ipv4, is.ipv4Addr * is.ipv6Address(val) - is.ipv6, is.ipv6Addr * is.ipAddress(val) - is.ip, is.ipAddr * is.hostAddress(val) - is.host = is.hostIp = is.hostAddr * is.port(val) * is.systemPort(val) - is.sysPort * is.url(val) - is.uri * is.userPort(val) Credit Cards: * is.creditCardNumber(str) - is.creditCard, is.creditCardNum * is.americanExpressCardNumber(str) - is.amexCardNum, is.amexCard * is.chinaUnionPayCardNumber(str) - is.chinaUnionPayCard, is.chinaUnion * is.dankortCardNumber(str) - is.dankortCard, is.dankort * is.dinersClubCarteBlancheCardNumber(str) - is.dinersClubCarteBlancheCard, is.dinersClubCB * is.dinersClubInternationalCardNumber(str) - is.dinersClubInternationalCard, is.dinersClubInt * is.dinersClubUSACanadaCardNumber(str) - is.dinersClubUSACanCard, is.dinersClub * is.discoverCardNumber(str) - is.discoverCard, is.discover * is.instaPaymentCardNumber(str) - is.instaPayment * is.jcbCardNumber(str) - is.jcbCard, is.jcb * is.laserCardNumber(str) - is.laserCard, is.laser * is.maestroCardNumber(str) - is.maestroCard, is.maestro * is.masterCardCardNumber - is.masterCardCard, is.masterCard * is.visaCardNumber(str) - is.visaCard, is.visa * is.visaElectronCardNumber(str) - is.visaElectronCard, is.visaElectron Personal information: * is.streetAddress(str) - is.street, is.address * is.zipCode(str) - is.zip * is.phoneNumber(str) - is.phone ## License The MIT License (MIT) Copyright (c) 2013,2014 Edmond Meinfelder Copyright (c) 2011 Enrico Marino Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # simple-concat [![travis][travis-image]][travis-url] [![npm][npm-image]][npm-url] [![downloads][downloads-image]][downloads-url] [![javascript style guide][standard-image]][standard-url] [travis-image]: https://img.shields.io/travis/feross/simple-concat/master.svg [travis-url]: https://travis-ci.org/feross/simple-concat [npm-image]: https://img.shields.io/npm/v/simple-concat.svg [npm-url]: https://npmjs.org/package/simple-concat [downloads-image]: https://img.shields.io/npm/dm/simple-concat.svg [downloads-url]: https://npmjs.org/package/simple-concat [standard-image]: https://img.shields.io/badge/code_style-standard-brightgreen.svg [standard-url]: https://standardjs.com ### Super-minimalist version of [`concat-stream`](https://github.com/maxogden/concat-stream). Less than 15 lines! ## install ``` npm install simple-concat ``` ## usage This example is longer than the implementation. ```js var s = new stream.PassThrough() concat(s, function (err, buf) { if (err) throw err console.error(buf) }) s.write('abc') setTimeout(function () { s.write('123') }, 10) setTimeout(function () { s.write('456') }, 20) setTimeout(function () { s.end('789') }, 30) ``` ## license MIT. Copyright (c) [Feross Aboukhadijeh](http://feross.org). # eslint-visitor-keys [](https://www.npmjs.com/package/eslint-visitor-keys) [](http://www.npmtrends.com/eslint-visitor-keys) [](https://travis-ci.org/eslint/eslint-visitor-keys) [](https://david-dm.org/eslint/eslint-visitor-keys) Constants and utilities about visitor keys to traverse AST. ## 💿 Installation Use [npm] to install. ```bash $ npm install eslint-visitor-keys ``` ### Requirements - [Node.js] 4.0.0 or later. ## 📖 Usage ```js const evk = require("eslint-visitor-keys") ``` ### evk.KEYS > type: `{ [type: string]: string[] | undefined }` Visitor keys. This keys are frozen. This is an object. Keys are the type of [ESTree] nodes. Their values are an array of property names which have child nodes. For example: ``` console.log(evk.KEYS.AssignmentExpression) // → ["left", "right"] ``` ### evk.getKeys(node) > type: `(node: object) => string[]` Get the visitor keys of a given AST node. This is similar to `Object.keys(node)` of ES Standard, but some keys are excluded: `parent`, `leadingComments`, `trailingComments`, and names which start with `_`. This will be used to traverse unknown nodes. For example: ``` const node = { type: "AssignmentExpression", left: { type: "Identifier", name: "foo" }, right: { type: "Literal", value: 0 } } console.log(evk.getKeys(node)) // → ["type", "left", "right"] ``` ### evk.unionWith(additionalKeys) > type: `(additionalKeys: object) => { [type: string]: string[] | undefined }` Make the union set with `evk.KEYS` and the given keys. - The order of keys is, `additionalKeys` is at first, then `evk.KEYS` is concatenated after that. - It removes duplicated keys as keeping the first one. For example: ``` console.log(evk.unionWith({ MethodDefinition: ["decorators"] })) // → { ..., MethodDefinition: ["decorators", "key", "value"], ... } ``` ## 📰 Change log See [GitHub releases](https://github.com/eslint/eslint-visitor-keys/releases). ## 🍻 Contributing Welcome. See [ESLint contribution guidelines](https://eslint.org/docs/developer-guide/contributing/). ### Development commands - `npm test` runs tests and measures code coverage. - `npm run lint` checks source codes with ESLint. - `npm run coverage` opens the code coverage report of the previous test with your default browser. - `npm run release` publishes this package to [npm] registory. [npm]: https://www.npmjs.com/ [Node.js]: https://nodejs.org/en/ [ESTree]: https://github.com/estree/estree # [nearley](http://nearley.js.org) ↗️ [](http://js.org) [](https://badge.fury.io/js/nearley) nearley is a simple, fast and powerful parsing toolkit. It consists of: 1. [A powerful, modular DSL for describing languages](https://nearley.js.org/docs/grammar) 2. [An efficient, lightweight Earley parser](https://nearley.js.org/docs/parser) 3. [Loads of tools, editor plug-ins, and other goodies!](https://nearley.js.org/docs/tooling) nearley is a **streaming** parser with support for catching **errors** gracefully and providing _all_ parsings for **ambiguous** grammars. It is compatible with a variety of **lexers** (we recommend [moo](http://github.com/tjvr/moo)). It comes with tools for creating **tests**, **railroad diagrams** and **fuzzers** from your grammars, and has support for a variety of editors and platforms. It works in both node and the browser. Unlike most other parser generators, nearley can handle *any* grammar you can define in BNF (and more!). In particular, while most existing JS parsers such as PEGjs and Jison choke on certain grammars (e.g. [left recursive ones](http://en.wikipedia.org/wiki/Left_recursion)), nearley handles them easily and efficiently by using the [Earley parsing algorithm](https://en.wikipedia.org/wiki/Earley_parser). nearley is used by a wide variety of projects: - [artificial intelligence](https://github.com/ChalmersGU-AI-course/shrdlite-course-project) and - [computational linguistics](https://wiki.eecs.yorku.ca/course_archive/2014-15/W/6339/useful_handouts) classes at universities; - [file format parsers](https://github.com/raymond-h/node-dmi); - [data-driven markup languages](https://github.com/idyll-lang/idyll-compiler); - [compilers for real-world programming languages](https://github.com/sizigi/lp5562); - and nearley itself! The nearley compiler is bootstrapped. nearley is an npm [staff pick](https://www.npmjs.com/package/npm-collection-staff-picks). ## Documentation Please visit our website https://nearley.js.org to get started! You will find a tutorial, detailed reference documents, and links to several real-world examples to get inspired. ## Contributing Please read [this document](.github/CONTRIBUTING.md) *before* working on nearley. If you are interested in contributing but unsure where to start, take a look at the issues labeled "up for grabs" on the issue tracker, or message a maintainer (@kach or @tjvr on Github). nearley is MIT licensed. A big thanks to Nathan Dinsmore for teaching me how to Earley, Aria Stewart for helping structure nearley into a mature module, and Robin Windels for bootstrapping the grammar. Additionally, Jacob Edelman wrote an experimental JavaScript parser with nearley and contributed ideas for EBNF support. Joshua T. Corbin refactored the compiler to be much, much prettier. Bojidar Marinov implemented postprocessors-in-other-languages. Shachar Itzhaky fixed a subtle bug with nullables. ## Citing nearley If you are citing nearley in academic work, please use the following BibTeX entry. ```bibtex @misc{nearley, author = "Kartik Chandra and Tim Radvan", title = "{nearley}: a parsing toolkit for {JavaScript}", year = {2014}, doi = {10.5281/zenodo.3897993}, url = {https://github.com/kach/nearley} } ``` # responselike > A response-like object for mocking a Node.js HTTP response stream [](https://travis-ci.org/lukechilds/responselike) [](https://coveralls.io/github/lukechilds/responselike?branch=master) [](https://www.npmjs.com/package/responselike) [](https://www.npmjs.com/package/responselike) Returns a streamable response object similar to a [Node.js HTTP response stream](https://nodejs.org/api/http.html#http_class_http_incomingmessage). Useful for formatting cached responses so they can be consumed by code expecting a real response. ## Install ```shell npm install --save responselike ``` Or if you're just using for testing you'll want: ```shell npm install --save-dev responselike ``` ## Usage ```js const Response = require('responselike'); const response = new Response(200, { foo: 'bar' }, Buffer.from('Hi!'), 'https://example.com'); response.statusCode; // 200 response.headers; // { foo: 'bar' } response.body; // <Buffer 48 69 21> response.url; // 'https://example.com' response.pipe(process.stdout); // Hi! ``` ## API ### new Response(statusCode, headers, body, url) Returns a streamable response object similar to a [Node.js HTTP response stream](https://nodejs.org/api/http.html#http_class_http_incomingmessage). #### statusCode Type: `number` HTTP response status code. #### headers Type: `object` HTTP headers object. Keys will be automatically lowercased. #### body Type: `buffer` A Buffer containing the response body. The Buffer contents will be streamable but is also exposed directly as `response.body`. #### url Type: `string` Request URL string. ## License MIT © Luke Childs # BIP39 [](https://travis-ci.org/bitcoinjs/bip39) [](https://www.npmjs.org/package/bip39) [](https://github.com/feross/standard) JavaScript implementation of [Bitcoin BIP39](https://github.com/bitcoin/bips/blob/master/bip-0039.mediawiki): Mnemonic code for generating deterministic keys ## Reminder for developers ***Please remember to allow recovery from mnemonic phrases that have invalid checksums (or that you don't have the wordlist)*** When a checksum is invalid, warn the user that the phrase is not something generated by your app, and ask if they would like to use it anyway. This way, your app only needs to hold the wordlists for your supported languages, but you can recover phrases made by other apps in other languages. However, there should be other checks in place, such as checking to make sure the user is inputting 12 words or more separated by a space. ie. `phrase.trim().split(/\s+/g).length >= 12` ## Removing wordlists from webpack/browserify Browserify/Webpack bundles can get very large if you include all the wordlists, so you can now exclude wordlists to make your bundle lighter. For example, if we want to exclude all wordlists besides chinese_simplified, you could build using the browserify command below. ```bash $ browserify -r bip39 -s bip39 \ --exclude=./wordlists/english.json \ --exclude=./wordlists/japanese.json \ --exclude=./wordlists/spanish.json \ --exclude=./wordlists/italian.json \ --exclude=./wordlists/french.json \ --exclude=./wordlists/korean.json \ --exclude=./wordlists/chinese_traditional.json \ > bip39.browser.js ``` This will create a bundle that only contains the chinese_simplified wordlist, and it will be the default wordlist for all calls without explicit wordlists. You can also do this in Webpack using the `IgnorePlugin`. Here is an example of excluding all non-English wordlists ```javascript ... plugins: [ new webpack.IgnorePlugin(/^\.\/(?!english)/, /bip39\/src\/wordlists$/), ], ... ``` This is how it will look in the browser console. ```javascript > bip39.entropyToMnemonic('00000000000000000000000000000000') "的 的 的 的 的 的 的 的 的 的 的 在" > bip39.wordlists.chinese_simplified Array(2048) [ "的", "一", "是", "在", "不", "了", "有", "和", "人", "这", … ] > bip39.wordlists.english undefined > bip39.wordlists.japanese undefined > bip39.wordlists.spanish undefined > bip39.wordlists.italian undefined > bip39.wordlists.french undefined > bip39.wordlists.korean undefined > bip39.wordlists.chinese_traditional undefined ``` For a list of supported wordlists check the wordlists folder. The name of the json file (minus the extension) is the name of the key to access the wordlist. You can also change the default wordlist at runtime if you dislike the wordlist you were given as default. ```javascript > bip39.entropyToMnemonic('00000000000000000000000000000fff') "あいこくしん　あいこくしん　あいこくしん　あいこくしん　あいこくしん　あいこくしん　あいこくしん　あいこくしん　あいこくしん　あいこくしん　あまい　ろんり" > bip39.setDefaultWordlist('italian') undefined > bip39.entropyToMnemonic('00000000000000000000000000000fff') "abaco abaco abaco abaco abaco abaco abaco abaco abaco abaco aforisma zibetto" ``` ## Installation ``` bash npm install bip39 ``` ## Examples ``` js // Generate a random mnemonic (uses crypto.randomBytes under the hood), defaults to 128-bits of entropy const mnemonic = bip39.generateMnemonic() // => 'seed sock milk update focus rotate barely fade car face mechanic mercy' bip39.mnemonicToSeedSync('basket actual').toString('hex') // => '5cf2d4a8b0355e90295bdfc565a022a409af063d5365bb57bf74d9528f494bfa4400f53d8349b80fdae44082d7f9541e1dba2b003bcfec9d0d53781ca676651f' bip39.mnemonicToSeedSync('basket actual') // => <Buffer 5c f2 d4 a8 b0 35 5e 90 29 5b df c5 65 a0 22 a4 09 af 06 3d 53 65 bb 57 bf 74 d9 52 8f 49 4b fa 44 00 f5 3d 83 49 b8 0f da e4 40 82 d7 f9 54 1e 1d ba 2b ...> // mnemonicToSeed has an synchronous version // mnemonicToSeedSync is less performance oriented bip39.mnemonicToSeed('basket actual').then(console.log) // => <Buffer 5c f2 d4 a8 b0 35 5e 90 29 5b df c5 65 a0 22 a4 09 af 06 3d 53 65 bb 57 bf 74 d9 52 8f 49 4b fa 44 00 f5 3d 83 49 b8 0f da e4 40 82 d7 f9 54 1e 1d ba 2b ...> bip39.mnemonicToSeed('basket actual').then(bytes => bytes.toString('hex')).then(console.log) // => '5cf2d4a8b0355e90295bdfc565a022a409af063d5365bb57bf74d9528f494bfa4400f53d8349b80fdae44082d7f9541e1dba2b003bcfec9d0d53781ca676651f' bip39.mnemonicToSeedSync('basket actual', 'a password') // => <Buffer 46 16 a4 4f 2c 90 b9 69 02 14 b8 fd 43 5b b4 14 62 43 de 10 7b 30 87 59 0a 3b b8 d3 1b 2f 3a ef ab 1d 4b 52 6d 21 e5 0a 04 02 3d 7a d0 66 43 ea 68 3b ... > bip39.validateMnemonic(mnemonic) // => true bip39.validateMnemonic('basket actual') // => false ``` ``` js const bip39 = require('bip39') // defaults to BIP39 English word list // uses HEX strings for entropy const mnemonic = bip39.entropyToMnemonic('00000000000000000000000000000000') // => abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about // reversible bip39.mnemonicToEntropy(mnemonic) // => '00000000000000000000000000000000' ``` # base-x [](https://www.npmjs.org/package/base-x) [](https://travis-ci.org/cryptocoinjs/base-x) [](https://github.com/feross/standard) Fast base encoding / decoding of any given alphabet using bitcoin style leading zero compression. **WARNING:** This module is **NOT RFC3548** compliant, it cannot be used for base16 (hex), base32, or base64 encoding in a standards compliant manner. ## Example Base58 ``` javascript var BASE58 = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz' var bs58 = require('base-x')(BASE58) var decoded = bs58.decode('5Kd3NBUAdUnhyzenEwVLy9pBKxSwXvE9FMPyR4UKZvpe6E3AgLr') console.log(decoded) // => <Buffer 80 ed db dc 11 68 f1 da ea db d3 e4 4c 1e 3f 8f 5a 28 4c 20 29 f7 8a d2 6a f9 85 83 a4 99 de 5b 19> console.log(bs58.encode(decoded)) // => 5Kd3NBUAdUnhyzenEwVLy9pBKxSwXvE9FMPyR4UKZvpe6E3AgLr ``` ### Alphabets See below for a list of commonly recognized alphabets, and their respective base. Base | Alphabet ------------- | ------------- 2 | `01` 8 | `01234567` 11 | `0123456789a` 16 | `0123456789abcdef` 32 | `0123456789ABCDEFGHJKMNPQRSTVWXYZ` 32 | `ybndrfg8ejkmcpqxot1uwisza345h769` (z-base-32) 36 | `0123456789abcdefghijklmnopqrstuvwxyz` 58 | `123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz` 62 | `0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ` 64 | `ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/` 67 | `ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_.!~` ## How it works It encodes octet arrays by doing long divisions on all significant digits in the array, creating a representation of that number in the new base. Then for every leading zero in the input (not significant as a number) it will encode as a single leader character. This is the first in the alphabet and will decode as 8 bits. The other characters depend upon the base. For example, a base58 alphabet packs roughly 5.858 bits per character. This means the encoded string 000f (using a base16, 0-f alphabet) will actually decode to 4 bytes unlike a canonical hex encoding which uniformly packs 4 bits into each character. While unusual, this does mean that no padding is required and it works for bases like 43. ## LICENSE [MIT](LICENSE) A direct derivation of the base58 implementation from [`bitcoin/bitcoin`](https://github.com/bitcoin/bitcoin/blob/f1e2f2a85962c1664e4e55471061af0eaa798d40/src/base58.cpp), generalized for variable length alphabets. # end-of-stream A node module that calls a callback when a readable/writable/duplex stream has completed or failed. npm install end-of-stream [](https://travis-ci.org/mafintosh/end-of-stream) ## Usage Simply pass a stream and a callback to the `eos`. Both legacy streams, streams2 and stream3 are supported. ``` js var eos = require('end-of-stream'); eos(readableStream, function(err) { // this will be set to the stream instance if (err) return console.log('stream had an error or closed early'); console.log('stream has ended', this === readableStream); }); eos(writableStream, function(err) { if (err) return console.log('stream had an error or closed early'); console.log('stream has finished', this === writableStream); }); eos(duplexStream, function(err) { if (err) return console.log('stream had an error or closed early'); console.log('stream has ended and finished', this === duplexStream); }); eos(duplexStream, {readable:false}, function(err) { if (err) return console.log('stream had an error or closed early'); console.log('stream has finished but might still be readable'); }); eos(duplexStream, {writable:false}, function(err) { if (err) return console.log('stream had an error or closed early'); console.log('stream has ended but might still be writable'); }); eos(readableStream, {error:false}, function(err) { // do not treat emit('error', err) as a end-of-stream }); ``` ## License MIT ## Related `end-of-stream` is part of the [mississippi stream utility collection](https://github.com/maxogden/mississippi) which includes more useful stream modules similar to this one. [![npm version][npm-image]][npm-url] [![build status][travis-image]][travis-url] # u2f-api U2F API for browsers ## API ### Support U2F has for a long time been supported in Chrome, although not with the standard `window.u2f` methods, but through a built-in extension. Nowadays, browsers seem to use `window.u2f` to expose the functionality. Supported browsers are: * Chrome, using Chrome-specific hacks * Opera, using Chrome-specific hacks Firefox, Safari and other browsers still lack U2F support. Since 0.1.0, this library supports the standard `window.u2f` methods. The library should be complemented with server-side functionality, e.g. using the [`u2f`](https://www.npmjs.com/package/u2f) package. ### Basics `u2f-api` exports two main functions and an error "enum". The main functions are `register()` and `sign()`, although since U2F isn't widely supported, the functions `isSupported()` as well as `ensureSupport()` helps you build applications which can use U2F only when the client supports it. The `register()` and `sign()` functions return *cancellable promises*, i.e. promises you can cancel manually. This helps you to ensure your code doesn't continue in success flow and by mistake accept a registration or authentification request. The returned promise has a function `cancel()` which will immediately reject the promise. #### Check or ensure support ```ts import { isSupported } from 'u2f-api' isSupported(): Promise< Boolean > // Doesn't throw/reject ``` ```ts import { ensureSupport } from 'u2f-api' ensureSupport(): Promise< void > // Throws/rejects if not supported ``` #### Register ```ts import { register } from 'u2f-api' register( registerRequests: RegisterRequest[], signRequests: SignRequest[], // optional timeout: number // optional ): Promise< RegisterResponse > ``` The `registerRequests` can be either a RegisterRequest or an array of such. The optional `signRequests` must be, unless ignored, an array of SignRequests. The optional `timeout` is in seconds, and will default to an implementation specific value, e.g. 30. #### Sign ```ts import { sign } from 'u2f-api' sign( signRequests: SignRequest[], timeout: number // optional ): Promise< SignResponse > ``` The values and interpretation of the arguments are the same as with `register( )`. #### Errors `register()` and `sign()` can return rejected promises. The rejection error is an `Error` object with a `metaData` property containing `code` and `type`. The `code` is a numerical value describing the type of the error, and `type` is the name of the error, as defined by the `ErrorCodes` enum in the "FIDO U2F Javascript API" specification. They are: ```js OK = 0 // u2f-api will never throw errors with this code OTHER_ERROR = 1 BAD_REQUEST = 2 CONFIGURATION_UNSUPPORTED = 3 DEVICE_INELIGIBLE = 4 TIMEOUT = 5 CANCELLED = -1 // Added by this library ``` ## Usage ### Loading the library The library is promisified and will use the built-in native promises of the browser, unless another promise library is injected. The following are valid ways to load the library: ```js var u2fApi = require( 'u2f-api' ); // Will use the native Promise // ... or var u2fApi = require( 'u2f-api' )( require( 'bluebird' ) ); // Will use bluebird for promises ``` ### Registering a passkey With `registerRequestsFromServer` somehow received from the server, the client code becomes: ```js u2fApi.register( registerRequestsFromServer ) .then( sendRegisterResponseToServer ) .catch( ... ); ``` ### Signing a passkey With `signRequestsFromServer` also received from the server somehow: ```js u2fApi.sign( signRequestsFromServer ) .then( sendSignResponseToServer ) .catch( ... ); ``` ### Example with checks for client support ```js u2fApi.isSupported( ) .then( function( supported ) { if ( supported ) { return u2fApi.sign( signRequestsFromServer ) .then( sendSignResponseToServer ); } else { ... // Other authentication method } } ) .catch( ... ); ``` ### Canceling As mentioned in the API section above, the returned promises from `register()` and `sign()` have a method `cancel()` which will cancel the request. This is nothing more than a helper function. ## Example implementation U2F is a *challenge-response protocol*. The server sends a `challenge` to the client, which responds with a `response`. This library is intended to be used in the client (the browser). There is another package intended for server-side: https://www.npmjs.com/package/u2f ## Common problems If you get `BAD_REQUEST`, the most common situations are that you either don't use `https` (which you must), or that the AppID doesn't match the server URI. In fact, the AppID must be exactly the base URI to your server (such as `https://your-server.com`), including the port if it isn't 443. For more information, please see https://developers.yubico.com/U2F/Libraries/Client_error_codes.html and https://developers.yubico.com/U2F/App_ID.html [npm-image]: https://img.shields.io/npm/v/u2f-api.svg [npm-url]: https://npmjs.org/package/u2f-api [travis-image]: https://img.shields.io/travis/grantila/u2f-api.svg [travis-url]: https://travis-ci.org/grantila/u2f-api # URI.js URI.js is an [RFC 3986](http://www.ietf.org/rfc/rfc3986.txt) compliant, scheme extendable URI parsing/validating/resolving library for all JavaScript environments (browsers, Node.js, etc). It is also compliant with the IRI ([RFC 3987](http://www.ietf.org/rfc/rfc3987.txt)), IDNA ([RFC 5890](http://www.ietf.org/rfc/rfc5890.txt)), IPv6 Address ([RFC 5952](http://www.ietf.org/rfc/rfc5952.txt)), IPv6 Zone Identifier ([RFC 6874](http://www.ietf.org/rfc/rfc6874.txt)) specifications. URI.js has an extensive test suite, and works in all (Node.js, web) environments. It weighs in at 6.4kb (gzipped, 17kb deflated). ## API ### Parsing URI.parse("uri://user:pass@example.com:123/one/two.three?q1=a1&q2=a2#body"); //returns: //{ // scheme : "uri", // userinfo : "user:pass", // host : "example.com", // port : 123, // path : "/one/two.three", // query : "q1=a1&q2=a2", // fragment : "body" //} ### Serializing URI.serialize({scheme : "http", host : "example.com", fragment : "footer"}) === "http://example.com/#footer" ### Resolving URI.resolve("uri://a/b/c/d?q", "../../g") === "uri://a/g" ### Normalizing URI.normalize("HTTP://ABC.com:80/%7Esmith/home.html") === "http://abc.com/~smith/home.html" ### Comparison URI.equal("example://a/b/c/%7Bfoo%7D", "eXAMPLE://a/./b/../b/%63/%7bfoo%7d") === true ### IP Support //IPv4 normalization URI.normalize("//192.068.001.000") === "//192.68.1.0" //IPv6 normalization URI.normalize("//[2001:0:0DB8::0:0001]") === "//[2001:0:db8::1]" //IPv6 zone identifier support URI.parse("//[2001:db8::7%25en1]"); //returns: //{ // host : "2001:db8::7%en1" //} ### IRI Support //convert IRI to URI URI.serialize(URI.parse("http://examplé.org/rosé")) === "http://xn--exampl-gva.org/ros%C3%A9" //convert URI to IRI URI.serialize(URI.parse("http://xn--exampl-gva.org/ros%C3%A9"), {iri:true}) === "http://examplé.org/rosé" ### Options All of the above functions can accept an additional options argument that is an object that can contain one or more of the following properties: * `scheme` (string) Indicates the scheme that the URI should be treated as, overriding the URI's normal scheme parsing behavior. * `reference` (string) If set to `"suffix"`, it indicates that the URI is in the suffix format, and the validator will use the option's `scheme` property to determine the URI's scheme. * `tolerant` (boolean, false) If set to `true`, the parser will relax URI resolving rules. * `absolutePath` (boolean, false) If set to `true`, the serializer will not resolve a relative `path` component. * `iri` (boolean, false) If set to `true`, the serializer will unescape non-ASCII characters as per [RFC 3987](http://www.ietf.org/rfc/rfc3987.txt). * `unicodeSupport` (boolean, false) If set to `true`, the parser will unescape non-ASCII characters in the parsed output as per [RFC 3987](http://www.ietf.org/rfc/rfc3987.txt). * `domainHost` (boolean, false) If set to `true`, the library will treat the `host` component as a domain name, and convert IDNs (International Domain Names) as per [RFC 5891](http://www.ietf.org/rfc/rfc5891.txt). ## Scheme Extendable URI.js supports inserting custom [scheme](http://en.wikipedia.org/wiki/URI_scheme) dependent processing rules. Currently, URI.js has built in support for the following schemes: * http \[[RFC 2616](http://www.ietf.org/rfc/rfc2616.txt)\] * https \[[RFC 2818](http://www.ietf.org/rfc/rfc2818.txt)\] * ws \[[RFC 6455](http://www.ietf.org/rfc/rfc6455.txt)\] * wss \[[RFC 6455](http://www.ietf.org/rfc/rfc6455.txt)\] * mailto \[[RFC 6068](http://www.ietf.org/rfc/rfc6068.txt)\] * urn \[[RFC 2141](http://www.ietf.org/rfc/rfc2141.txt)\] * urn:uuid \[[RFC 4122](http://www.ietf.org/rfc/rfc4122.txt)\] ### HTTP/HTTPS Support URI.equal("HTTP://ABC.COM:80", "http://abc.com/") === true URI.equal("https://abc.com", "HTTPS://ABC.COM:443/") === true ### WS/WSS Support URI.parse("wss://example.com/foo?bar=baz"); //returns: //{ // scheme : "wss", // host: "example.com", // resourceName: "/foo?bar=baz", // secure: true, //} URI.equal("WS://ABC.COM:80/chat#one", "ws://abc.com/chat") === true ### Mailto Support URI.parse("mailto:alpha@example.com,bravo@example.com?subject=SUBSCRIBE&body=Sign%20me%20up!"); //returns: //{ // scheme : "mailto", // to : ["alpha@example.com", "bravo@example.com"], // subject : "SUBSCRIBE", // body : "Sign me up!" //} URI.serialize({ scheme : "mailto", to : ["alpha@example.com"], subject : "REMOVE", body : "Please remove me", headers : { cc : "charlie@example.com" } }) === "mailto:alpha@example.com?cc=charlie@example.com&subject=REMOVE&body=Please%20remove%20me" ### URN Support URI.parse("urn:example:foo"); //returns: //{ // scheme : "urn", // nid : "example", // nss : "foo", //} #### URN UUID Support URI.parse("urn:uuid:f81d4fae-7dec-11d0-a765-00a0c91e6bf6"); //returns: //{ // scheme : "urn", // nid : "uuid", // uuid : "f81d4fae-7dec-11d0-a765-00a0c91e6bf6", //} ## Usage To load in a browser, use the following tag: <script type="text/javascript" src="uri-js/dist/es5/uri.all.min.js"></script> To load in a CommonJS/Module environment, first install with npm/yarn by running on the command line: npm install uri-js # OR yarn add uri-js Then, in your code, load it using: const URI = require("uri-js"); If you are writing your code in ES6+ (ESNEXT) or TypeScript, you would load it using: import * as URI from "uri-js"; Or you can load just what you need using named exports: import { parse, serialize, resolve, resolveComponents, normalize, equal, removeDotSegments, pctEncChar, pctDecChars, escapeComponent, unescapeComponent } from "uri-js"; ## Breaking changes ### Breaking changes from 3.x URN parsing has been completely changed to better align with the specification. Scheme is now always `urn`, but has two new properties: `nid` which contains the Namspace Identifier, and `nss` which contains the Namespace Specific String. The `nss` property will be removed by higher order scheme handlers, such as the UUID URN scheme handler. The UUID of a URN can now be found in the `uuid` property. ### Breaking changes from 2.x URI validation has been removed as it was slow, exposed a vulnerabilty, and was generally not useful. ### Breaking changes from 1.x The `errors` array on parsed components is now an `error` string. Standard library ================ Standard library components for use with `tsc` (portable) and `asc` (assembly). Base configurations (.json) and definition files (.d.ts) are relevant to `tsc` only and not used by `asc`. # <img src="docs_app/assets/Rx_Logo_S.png" alt="RxJS Logo" width="86" height="86"> RxJS: Reactive Extensions For JavaScript [](https://circleci.com/gh/ReactiveX/rxjs/tree/6.x) [](http://badge.fury.io/js/%40reactivex%2Frxjs) [](https://gitter.im/Reactive-Extensions/RxJS?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) # RxJS 6 Stable ### MIGRATION AND RELEASE INFORMATION: Find out how to update to v6, **automatically update your TypeScript code**, and more! - [Current home is MIGRATION.md](./docs_app/content/guide/v6/migration.md) ### FOR V 5.X PLEASE GO TO [THE 5.0 BRANCH](https://github.com/ReactiveX/rxjs/tree/5.x) Reactive Extensions Library for JavaScript. This is a rewrite of [Reactive-Extensions/RxJS](https://github.com/Reactive-Extensions/RxJS) and is the latest production-ready version of RxJS. This rewrite is meant to have better performance, better modularity, better debuggable call stacks, while staying mostly backwards compatible, with some breaking changes that reduce the API surface. [Apache 2.0 License](LICENSE.txt) - [Code of Conduct](CODE_OF_CONDUCT.md) - [Contribution Guidelines](CONTRIBUTING.md) - [Maintainer Guidelines](doc_app/content/maintainer-guidelines.md) - [API Documentation](https://rxjs.dev/) ## Versions In This Repository - [master](https://github.com/ReactiveX/rxjs/commits/master) - This is all of the current, unreleased work, which is against v6 of RxJS right now - [stable](https://github.com/ReactiveX/rxjs/commits/stable) - This is the branch for the latest version you'd get if you do `npm install rxjs` ## Important By contributing or commenting on issues in this repository, whether you've read them or not, you're agreeing to the [Contributor Code of Conduct](CODE_OF_CONDUCT.md). Much like traffic laws, ignorance doesn't grant you immunity. ## Installation and Usage ### ES6 via npm ```sh npm install rxjs ``` It's recommended to pull in the Observable creation methods you need directly from `'rxjs'` as shown below with `range`. And you can pull in any operator you need from one spot, under `'rxjs/operators'`. ```ts import { range } from "rxjs"; import { map, filter } from "rxjs/operators"; range(1, 200) .pipe( filter(x => x % 2 === 1), map(x => x + x) ) .subscribe(x => console.log(x)); ``` Here, we're using the built-in `pipe` method on Observables to combine operators. See [pipeable operators](https://github.com/ReactiveX/rxjs/blob/master/doc/pipeable-operators.md) for more information. ### CommonJS via npm To install this library for CommonJS (CJS) usage, use the following command: ```sh npm install rxjs ``` (Note: destructuring available in Node 8+) ```js const { range } = require('rxjs'); const { map, filter } = require('rxjs/operators'); range(1, 200).pipe( filter(x => x % 2 === 1), map(x => x + x) ).subscribe(x => console.log(x)); ``` ### CDN For CDN, you can use [unpkg](https://unpkg.com/): https://unpkg.com/rxjs/bundles/rxjs.umd.min.js The global namespace for rxjs is `rxjs`: ```js const { range } = rxjs; const { map, filter } = rxjs.operators; range(1, 200) .pipe( filter(x => x % 2 === 1), map(x => x + x) ) .subscribe(x => console.log(x)); ``` ## Goals - Smaller overall bundles sizes - Provide better performance than preceding versions of RxJS - To model/follow the [Observable Spec Proposal](https://github.com/zenparsing/es-observable) to the observable - Provide more modular file structure in a variety of formats - Provide more debuggable call stacks than preceding versions of RxJS ## Building/Testing - `npm run build_all` - builds everything - `npm test` - runs tests - `npm run test_no_cache` - run test with `ts-node` set to false ## Performance Tests Run `npm run build_perf` or `npm run perf` to run the performance tests with `protractor`. Run `npm run perf_micro [operator]` to run micro performance test benchmarking operator. ## Adding documentation We appreciate all contributions to the documentation of any type. All of the information needed to get the docs app up and running locally as well as how to contribute can be found in the [documentation directory](./docs_app). ## Generating PNG marble diagrams The script `npm run tests2png` requires some native packages installed locally: `imagemagick`, `graphicsmagick`, and `ghostscript`. For Mac OS X with [Homebrew](http://brew.sh/): - `brew install imagemagick` - `brew install graphicsmagick` - `brew install ghostscript` - You may need to install the Ghostscript fonts manually: - Download the tarball from the [gs-fonts project](https://sourceforge.net/projects/gs-fonts) - `mkdir -p /usr/local/share/ghostscript && tar zxvf /path/to/ghostscript-fonts.tar.gz -C /usr/local/share/ghostscript` For Debian Linux: - `sudo add-apt-repository ppa:dhor/myway` - `apt-get install imagemagick` - `apt-get install graphicsmagick` - `apt-get install ghostscript` For Windows and other Operating Systems, check the download instructions here: - http://imagemagick.org - http://www.graphicsmagick.org - http://www.ghostscript.com/ # fs.realpath A backwards-compatible fs.realpath for Node v6 and above In Node v6, the JavaScript implementation of fs.realpath was replaced with a faster (but less resilient) native implementation. That raises new and platform-specific errors and cannot handle long or excessively symlink-looping paths. This module handles those cases by detecting the new errors and falling back to the JavaScript implementation. On versions of Node prior to v6, it has no effect. ## USAGE ```js var rp = require('fs.realpath') // async version rp.realpath(someLongAndLoopingPath, function (er, real) { // the ELOOP was handled, but it was a bit slower }) // sync version var real = rp.realpathSync(someLongAndLoopingPath) // monkeypatch at your own risk! // This replaces the fs.realpath/fs.realpathSync builtins rp.monkeypatch() // un-do the monkeypatching rp.unmonkeypatch() ``` <p align="center"> <img width="250" src="/yargs-logo.png"> </p> <h1 align="center"> Yargs </h1> <p align="center"> <b >Yargs be a node.js library fer hearties tryin' ter parse optstrings</b> </p> <br> [![Build Status][travis-image]][travis-url] [![NPM version][npm-image]][npm-url] [![js-standard-style][standard-image]][standard-url] [![Coverage][coverage-image]][coverage-url] [![Conventional Commits][conventional-commits-image]][conventional-commits-url] [![Slack][slack-image]][slack-url] ## Description : Yargs helps you build interactive command line tools, by parsing arguments and generating an elegant user interface. It gives you: * commands and (grouped) options (`my-program.js serve --port=5000`). * a dynamically generated help menu based on your arguments. > <img width="400" src="/screen.png"> * bash-completion shortcuts for commands and options. * and [tons more](/docs/api.md). ## Installation Stable version: ```bash npm i yargs ``` Bleeding edge version with the most recent features: ```bash npm i yargs@next ``` ## Usage : ### Simple Example ```javascript #!/usr/bin/env node const {argv} = require('yargs') if (argv.ships > 3 && argv.distance < 53.5) { console.log('Plunder more riffiwobbles!') } else { console.log('Retreat from the xupptumblers!') } ``` ```bash $ ./plunder.js --ships=4 --distance=22 Plunder more riffiwobbles! $ ./plunder.js --ships 12 --distance 98.7 Retreat from the xupptumblers! ``` ### Complex Example ```javascript #!/usr/bin/env node require('yargs') // eslint-disable-line .command('serve [port]', 'start the server', (yargs) => { yargs .positional('port', { describe: 'port to bind on', default: 5000 }) }, (argv) => { if (argv.verbose) console.info(`start server on :${argv.port}`) serve(argv.port) }) .option('verbose', { alias: 'v', type: 'boolean', description: 'Run with verbose logging' }) .argv ``` Run the example above with `--help` to see the help for the application. ## TypeScript yargs has type definitions at [@types/yargs][type-definitions]. ``` npm i @types/yargs --save-dev ``` See usage examples in [docs](/docs/typescript.md). ## Webpack See usage examples of yargs with webpack in [docs](/docs/webpack.md). ## Community : Having problems? want to contribute? join our [community slack](http://devtoolscommunity.herokuapp.com). ## Documentation : ### Table of Contents * [Yargs' API](/docs/api.md) * [Examples](/docs/examples.md) * [Parsing Tricks](/docs/tricks.md) * [Stop the Parser](/docs/tricks.md#stop) * [Negating Boolean Arguments](/docs/tricks.md#negate) * [Numbers](/docs/tricks.md#numbers) * [Arrays](/docs/tricks.md#arrays) * [Objects](/docs/tricks.md#objects) * [Quotes](/docs/tricks.md#quotes) * [Advanced Topics](/docs/advanced.md) * [Composing Your App Using Commands](/docs/advanced.md#commands) * [Building Configurable CLI Apps](/docs/advanced.md#configuration) * [Customizing Yargs' Parser](/docs/advanced.md#customizing) * [Contributing](/contributing.md) [travis-url]: https://travis-ci.org/yargs/yargs [travis-image]: https://img.shields.io/travis/yargs/yargs/master.svg [npm-url]: https://www.npmjs.com/package/yargs [npm-image]: https://img.shields.io/npm/v/yargs.svg [standard-image]: https://img.shields.io/badge/code%20style-standard-brightgreen.svg [standard-url]: http://standardjs.com/ [conventional-commits-image]: https://img.shields.io/badge/Conventional%20Commits-1.0.0-yellow.svg [conventional-commits-url]: https://conventionalcommits.org/ [slack-image]: http://devtoolscommunity.herokuapp.com/badge.svg [slack-url]: http://devtoolscommunity.herokuapp.com [type-definitions]: https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/yargs [coverage-image]: https://img.shields.io/nycrc/yargs/yargs [coverage-url]: https://github.com/yargs/yargs/blob/master/.nycrc # braces [](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W8YFZ425KND68) [](https://www.npmjs.com/package/braces) [](https://npmjs.org/package/braces) [](https://npmjs.org/package/braces) [](https://travis-ci.org/micromatch/braces) > Bash-like brace expansion, implemented in JavaScript. Safer than other brace expansion libs, with complete support for the Bash 4.3 braces specification, without sacrificing speed. Please consider following this project's author, [Jon Schlinkert](https://github.com/jonschlinkert), and consider starring the project to show your :heart: and support. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save braces ``` ## v3.0.0 Released!! See the [changelog](CHANGELOG.md) for details. ## Why use braces? Brace patterns make globs more powerful by adding the ability to match specific ranges and sequences of characters. * **Accurate** - complete support for the [Bash 4.3 Brace Expansion](www.gnu.org/software/bash/) specification (passes all of the Bash braces tests) * **[fast and performant](#benchmarks)** - Starts fast, runs fast and [scales well](#performance) as patterns increase in complexity. * **Organized code base** - The parser and compiler are easy to maintain and update when edge cases crop up. * **Well-tested** - Thousands of test assertions, and passes all of the Bash, minimatch, and [brace-expansion](https://github.com/juliangruber/brace-expansion) unit tests (as of the date this was written). * **Safer** - You shouldn't have to worry about users defining aggressive or malicious brace patterns that can break your application. Braces takes measures to prevent malicious regex that can be used for DDoS attacks (see [catastrophic backtracking](https://www.regular-expressions.info/catastrophic.html)). * [Supports lists](#lists) - (aka "sets") `a/{b,c}/d` => `['a/b/d', 'a/c/d']` * [Supports sequences](#sequences) - (aka "ranges") `{01..03}` => `['01', '02', '03']` * [Supports steps](#steps) - (aka "increments") `{2..10..2}` => `['2', '4', '6', '8', '10']` * [Supports escaping](#escaping) - To prevent evaluation of special characters. ## Usage The main export is a function that takes one or more brace `patterns` and `options`. ```js const braces = require('braces'); // braces(patterns[, options]); console.log(braces(['{01..05}', '{a..e}'])); //=> ['(0[1-5])', '([a-e])'] console.log(braces(['{01..05}', '{a..e}'], { expand: true })); //=> ['01', '02', '03', '04', '05', 'a', 'b', 'c', 'd', 'e'] ``` ### Brace Expansion vs. Compilation By default, brace patterns are compiled into strings that are optimized for creating regular expressions and matching. **Compiled** ```js console.log(braces('a/{x,y,z}/b')); //=> ['a/(x|y|z)/b'] console.log(braces(['a/{01..20}/b', 'a/{1..5}/b'])); //=> [ 'a/(0[1-9]|1[0-9]|20)/b', 'a/([1-5])/b' ] ``` **Expanded** Enable brace expansion by setting the `expand` option to true, or by using [braces.expand()](#expand) (returns an array similar to what you'd expect from Bash, or `echo {1..5}`, or [minimatch](https://github.com/isaacs/minimatch)): ```js console.log(braces('a/{x,y,z}/b', { expand: true })); //=> ['a/x/b', 'a/y/b', 'a/z/b'] console.log(braces.expand('{01..10}')); //=> ['01','02','03','04','05','06','07','08','09','10'] ``` ### Lists Expand lists (like Bash "sets"): ```js console.log(braces('a/{foo,bar,baz}/*.js')); //=> ['a/(foo|bar|baz)/*.js'] console.log(braces.expand('a/{foo,bar,baz}/*.js')); //=> ['a/foo/*.js', 'a/bar/*.js', 'a/baz/*.js'] ``` ### Sequences Expand ranges of characters (like Bash "sequences"): ```js console.log(braces.expand('{1..3}')); // ['1', '2', '3'] console.log(braces.expand('a/{1..3}/b')); // ['a/1/b', 'a/2/b', 'a/3/b'] console.log(braces('{a..c}', { expand: true })); // ['a', 'b', 'c'] console.log(braces('foo/{a..c}', { expand: true })); // ['foo/a', 'foo/b', 'foo/c'] // supports zero-padded ranges console.log(braces('a/{01..03}/b')); //=> ['a/(0[1-3])/b'] console.log(braces('a/{001..300}/b')); //=> ['a/(0{2}[1-9]|0[1-9][0-9]|[12][0-9]{2}|300)/b'] ``` See [fill-range](https://github.com/jonschlinkert/fill-range) for all available range-expansion options. ### Steppped ranges Steps, or increments, may be used with ranges: ```js console.log(braces.expand('{2..10..2}')); //=> ['2', '4', '6', '8', '10'] console.log(braces('{2..10..2}')); //=> ['(2|4|6|8|10)'] ``` When the [.optimize](#optimize) method is used, or [options.optimize](#optionsoptimize) is set to true, sequences are passed to [to-regex-range](https://github.com/jonschlinkert/to-regex-range) for expansion. ### Nesting Brace patterns may be nested. The results of each expanded string are not sorted, and left to right order is preserved. **"Expanded" braces** ```js console.log(braces.expand('a{b,c,/{x,y}}/e')); //=> ['ab/e', 'ac/e', 'a/x/e', 'a/y/e'] console.log(braces.expand('a/{x,{1..5},y}/c')); //=> ['a/x/c', 'a/1/c', 'a/2/c', 'a/3/c', 'a/4/c', 'a/5/c', 'a/y/c'] ``` **"Optimized" braces** ```js console.log(braces('a{b,c,/{x,y}}/e')); //=> ['a(b|c|/(x|y))/e'] console.log(braces('a/{x,{1..5},y}/c')); //=> ['a/(x|([1-5])|y)/c'] ``` ### Escaping **Escaping braces** A brace pattern will not be expanded or evaluted if _either the opening or closing brace is escaped_: ```js console.log(braces.expand('a\\{d,c,b}e')); //=> ['a{d,c,b}e'] console.log(braces.expand('a{d,c,b\\}e')); //=> ['a{d,c,b}e'] ``` **Escaping commas** Commas inside braces may also be escaped: ```js console.log(braces.expand('a{b\\,c}d')); //=> ['a{b,c}d'] console.log(braces.expand('a{d\\,c,b}e')); //=> ['ad,ce', 'abe'] ``` **Single items** Following bash conventions, a brace pattern is also not expanded when it contains a single character: ```js console.log(braces.expand('a{b}c')); //=> ['a{b}c'] ``` ## Options ### options.maxLength **Type**: `Number` **Default**: `65,536` **Description**: Limit the length of the input string. Useful when the input string is generated or your application allows users to pass a string, et cetera. ```js console.log(braces('a/{b,c}/d', { maxLength: 3 })); //=> throws an error ``` ### options.expand **Type**: `Boolean` **Default**: `undefined` **Description**: Generate an "expanded" brace pattern (alternatively you can use the `braces.expand()` method, which does the same thing). ```js console.log(braces('a/{b,c}/d', { expand: true })); //=> [ 'a/b/d', 'a/c/d' ] ``` ### options.nodupes **Type**: `Boolean` **Default**: `undefined` **Description**: Remove duplicates from the returned array. ### options.rangeLimit **Type**: `Number` **Default**: `1000` **Description**: To prevent malicious patterns from being passed by users, an error is thrown when `braces.expand()` is used or `options.expand` is true and the generated range will exceed the `rangeLimit`. You can customize `options.rangeLimit` or set it to `Inifinity` to disable this altogether. **Examples** ```js // pattern exceeds the "rangeLimit", so it's optimized automatically console.log(braces.expand('{1..1000}')); //=> ['([1-9]|[1-9][0-9]{1,2}|1000)'] // pattern does not exceed "rangeLimit", so it's NOT optimized console.log(braces.expand('{1..100}')); //=> ['1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12', '13', '14', '15', '16', '17', '18', '19', '20', '21', '22', '23', '24', '25', '26', '27', '28', '29', '30', '31', '32', '33', '34', '35', '36', '37', '38', '39', '40', '41', '42', '43', '44', '45', '46', '47', '48', '49', '50', '51', '52', '53', '54', '55', '56', '57', '58', '59', '60', '61', '62', '63', '64', '65', '66', '67', '68', '69', '70', '71', '72', '73', '74', '75', '76', '77', '78', '79', '80', '81', '82', '83', '84', '85', '86', '87', '88', '89', '90', '91', '92', '93', '94', '95', '96', '97', '98', '99', '100'] ``` ### options.transform **Type**: `Function` **Default**: `undefined` **Description**: Customize range expansion. **Example: Transforming non-numeric values** ```js const alpha = braces.expand('x/{a..e}/y', { transform(value, index) { // When non-numeric values are passed, "value" is a character code. return 'foo/' + String.fromCharCode(value) + '-' + index; } }); console.log(alpha); //=> [ 'x/foo/a-0/y', 'x/foo/b-1/y', 'x/foo/c-2/y', 'x/foo/d-3/y', 'x/foo/e-4/y' ] ``` **Example: Transforming numeric values** ```js const numeric = braces.expand('{1..5}', { transform(value) { // when numeric values are passed, "value" is a number return 'foo/' + value * 2; } }); console.log(numeric); //=> [ 'foo/2', 'foo/4', 'foo/6', 'foo/8', 'foo/10' ] ``` ### options.quantifiers **Type**: `Boolean` **Default**: `undefined` **Description**: In regular expressions, quanitifiers can be used to specify how many times a token can be repeated. For example, `a{1,3}` will match the letter `a` one to three times. Unfortunately, regex quantifiers happen to share the same syntax as [Bash lists](#lists) The `quantifiers` option tells braces to detect when [regex quantifiers](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp#quantifiers) are defined in the given pattern, and not to try to expand them as lists. **Examples** ```js const braces = require('braces'); console.log(braces('a/b{1,3}/{x,y,z}')); //=> [ 'a/b(1|3)/(x|y|z)' ] console.log(braces('a/b{1,3}/{x,y,z}', {quantifiers: true})); //=> [ 'a/b{1,3}/(x|y|z)' ] console.log(braces('a/b{1,3}/{x,y,z}', {quantifiers: true, expand: true})); //=> [ 'a/b{1,3}/x', 'a/b{1,3}/y', 'a/b{1,3}/z' ] ``` ### options.unescape **Type**: `Boolean` **Default**: `undefined` **Description**: Strip backslashes that were used for escaping from the result. ## What is "brace expansion"? Brace expansion is a type of parameter expansion that was made popular by unix shells for generating lists of strings, as well as regex-like matching when used alongside wildcards (globs). In addition to "expansion", braces are also used for matching. In other words: * [brace expansion](#brace-expansion) is for generating new lists * [brace matching](#brace-matching) is for filtering existing lists <details> <summary><strong>More about brace expansion</strong> (click to expand)</summary> There are two main types of brace expansion: 1. **lists**: which are defined using comma-separated values inside curly braces: `{a,b,c}` 2. **sequences**: which are defined using a starting value and an ending value, separated by two dots: `a{1..3}b`. Optionally, a third argument may be passed to define a "step" or increment to use: `a{1..100..10}b`. These are also sometimes referred to as "ranges". Here are some example brace patterns to illustrate how they work: **Sets** ``` {a,b,c} => a b c {a,b,c}{1,2} => a1 a2 b1 b2 c1 c2 ``` **Sequences** ``` {1..9} => 1 2 3 4 5 6 7 8 9 {4..-4} => 4 3 2 1 0 -1 -2 -3 -4 {1..20..3} => 1 4 7 10 13 16 19 {a..j} => a b c d e f g h i j {j..a} => j i h g f e d c b a {a..z..3} => a d g j m p s v y ``` **Combination** Sets and sequences can be mixed together or used along with any other strings. ``` {a,b,c}{1..3} => a1 a2 a3 b1 b2 b3 c1 c2 c3 foo/{a,b,c}/bar => foo/a/bar foo/b/bar foo/c/bar ``` The fact that braces can be "expanded" from relatively simple patterns makes them ideal for quickly generating test fixtures, file paths, and similar use cases. ## Brace matching In addition to _expansion_, brace patterns are also useful for performing regular-expression-like matching. For example, the pattern `foo/{1..3}/bar` would match any of following strings: ``` foo/1/bar foo/2/bar foo/3/bar ``` But not: ``` baz/1/qux baz/2/qux baz/3/qux ``` Braces can also be combined with [glob patterns](https://github.com/jonschlinkert/micromatch) to perform more advanced wildcard matching. For example, the pattern `*/{1..3}/*` would match any of following strings: ``` foo/1/bar foo/2/bar foo/3/bar baz/1/qux baz/2/qux baz/3/qux ``` ## Brace matching pitfalls Although brace patterns offer a user-friendly way of matching ranges or sets of strings, there are also some major disadvantages and potential risks you should be aware of. ### tldr **"brace bombs"** * brace expansion can eat up a huge amount of processing resources * as brace patterns increase _linearly in size_, the system resources required to expand the pattern increase exponentially * users can accidentally (or intentially) exhaust your system's resources resulting in the equivalent of a DoS attack (bonus: no programming knowledge is required!) For a more detailed explanation with examples, see the [geometric complexity](#geometric-complexity) section. ### The solution Jump to the [performance section](#performance) to see how Braces solves this problem in comparison to other libraries. ### Geometric complexity At minimum, brace patterns with sets limited to two elements have quadradic or `O(n^2)` complexity. But the complexity of the algorithm increases exponentially as the number of sets, _and elements per set_, increases, which is `O(n^c)`. For example, the following sets demonstrate quadratic (`O(n^2)`) complexity: ``` {1,2}{3,4} => (2X2) => 13 14 23 24 {1,2}{3,4}{5,6} => (2X2X2) => 135 136 145 146 235 236 245 246 ``` But add an element to a set, and we get a n-fold Cartesian product with `O(n^c)` complexity: ``` {1,2,3}{4,5,6}{7,8,9} => (3X3X3) => 147 148 149 157 158 159 167 168 169 247 248 249 257 258 259 267 268 269 347 348 349 357 358 359 367 368 369 ``` Now, imagine how this complexity grows given that each element is a n-tuple: ``` {1..100}{1..100} => (100X100) => 10,000 elements (38.4 kB) {1..100}{1..100}{1..100} => (100X100X100) => 1,000,000 elements (5.76 MB) ``` Although these examples are clearly contrived, they demonstrate how brace patterns can quickly grow out of control. **More information** Interested in learning more about brace expansion? * [linuxjournal/bash-brace-expansion](http://www.linuxjournal.com/content/bash-brace-expansion) * [rosettacode/Brace_expansion](https://rosettacode.org/wiki/Brace_expansion) * [cartesian product](https://en.wikipedia.org/wiki/Cartesian_product) </details> ## Performance Braces is not only screaming fast, it's also more accurate the other brace expansion libraries. ### Better algorithms Fortunately there is a solution to the ["brace bomb" problem](#brace-matching-pitfalls): _don't expand brace patterns into an array when they're used for matching_. Instead, convert the pattern into an optimized regular expression. This is easier said than done, and braces is the only library that does this currently. **The proof is in the numbers** Minimatch gets exponentially slower as patterns increase in complexity, braces does not. The following results were generated using `braces()` and `minimatch.braceExpand()`, respectively. | **Pattern** | **braces** | **[minimatch][]** | | --- | --- | --- | | `{1..9007199254740991}`[^1] | `298 B` (5ms 459μs)| N/A (freezes) | | `{1..1000000000000000}` | `41 B` (1ms 15μs) | N/A (freezes) | | `{1..100000000000000}` | `40 B` (890μs) | N/A (freezes) | | `{1..10000000000000}` | `39 B` (2ms 49μs) | N/A (freezes) | | `{1..1000000000000}` | `38 B` (608μs) | N/A (freezes) | | `{1..100000000000}` | `37 B` (397μs) | N/A (freezes) | | `{1..10000000000}` | `35 B` (983μs) | N/A (freezes) | | `{1..1000000000}` | `34 B` (798μs) | N/A (freezes) | | `{1..100000000}` | `33 B` (733μs) | N/A (freezes) | | `{1..10000000}` | `32 B` (5ms 632μs) | `78.89 MB` (16s 388ms 569μs) | | `{1..1000000}` | `31 B` (1ms 381μs) | `6.89 MB` (1s 496ms 887μs) | | `{1..100000}` | `30 B` (950μs) | `588.89 kB` (146ms 921μs) | | `{1..10000}` | `29 B` (1ms 114μs) | `48.89 kB` (14ms 187μs) | | `{1..1000}` | `28 B` (760μs) | `3.89 kB` (1ms 453μs) | | `{1..100}` | `22 B` (345μs) | `291 B` (196μs) | | `{1..10}` | `10 B` (533μs) | `20 B` (37μs) | | `{1..3}` | `7 B` (190μs) | `5 B` (27μs) | ### Faster algorithms When you need expansion, braces is still much faster. _(the following results were generated using `braces.expand()` and `minimatch.braceExpand()`, respectively)_ | **Pattern** | **braces** | **[minimatch][]** | | --- | --- | --- | | `{1..10000000}` | `78.89 MB` (2s 698ms 642μs) | `78.89 MB` (18s 601ms 974μs) | | `{1..1000000}` | `6.89 MB` (458ms 576μs) | `6.89 MB` (1s 491ms 621μs) | | `{1..100000}` | `588.89 kB` (20ms 728μs) | `588.89 kB` (156ms 919μs) | | `{1..10000}` | `48.89 kB` (2ms 202μs) | `48.89 kB` (13ms 641μs) | | `{1..1000}` | `3.89 kB` (1ms 796μs) | `3.89 kB` (1ms 958μs) | | `{1..100}` | `291 B` (424μs) | `291 B` (211μs) | | `{1..10}` | `20 B` (487μs) | `20 B` (72μs) | | `{1..3}` | `5 B` (166μs) | `5 B` (27μs) | If you'd like to run these comparisons yourself, see [test/support/generate.js](test/support/generate.js). ## Benchmarks ### Running benchmarks Install dev dependencies: ```bash npm i -d && npm benchmark ``` ### Latest results Braces is more accurate, without sacrificing performance. ```bash # range (expanded) braces x 29,040 ops/sec ±3.69% (91 runs sampled)) minimatch x 4,735 ops/sec ±1.28% (90 runs sampled) # range (optimized for regex) braces x 382,878 ops/sec ±0.56% (94 runs sampled) minimatch x 1,040 ops/sec ±0.44% (93 runs sampled) # nested ranges (expanded) braces x 19,744 ops/sec ±2.27% (92 runs sampled)) minimatch x 4,579 ops/sec ±0.50% (93 runs sampled) # nested ranges (optimized for regex) braces x 246,019 ops/sec ±2.02% (93 runs sampled) minimatch x 1,028 ops/sec ±0.39% (94 runs sampled) # set (expanded) braces x 138,641 ops/sec ±0.53% (95 runs sampled) minimatch x 219,582 ops/sec ±0.98% (94 runs sampled) # set (optimized for regex) braces x 388,408 ops/sec ±0.41% (95 runs sampled) minimatch x 44,724 ops/sec ±0.91% (89 runs sampled) # nested sets (expanded) braces x 84,966 ops/sec ±0.48% (94 runs sampled) minimatch x 140,720 ops/sec ±0.37% (95 runs sampled) # nested sets (optimized for regex) braces x 263,340 ops/sec ±2.06% (92 runs sampled) minimatch x 28,714 ops/sec ±0.40% (90 runs sampled) ``` ## About <details> <summary><strong>Contributing</strong></summary> Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). </details> <details> <summary><strong>Running Tests</strong></summary> Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` </details> <details> <summary><strong>Building docs</strong></summary> _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` </details> ### Contributors | **Commits** | **Contributor** | | --- | --- | | 197 | [jonschlinkert](https://github.com/jonschlinkert) | | 4 | [doowb](https://github.com/doowb) | | 1 | [es128](https://github.com/es128) | | 1 | [eush77](https://github.com/eush77) | | 1 | [hemanth](https://github.com/hemanth) | | 1 | [wtgtybhertgeghgtwtg](https://github.com/wtgtybhertgeghgtwtg) | ### Author **Jon Schlinkert** * [GitHub Profile](https://github.com/jonschlinkert) * [Twitter Profile](https://twitter.com/jonschlinkert) * [LinkedIn Profile](https://linkedin.com/in/jonschlinkert) ### License Copyright © 2019, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT License](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.8.0, on April 08, 2019._ <table><thead> <tr> <th>Linux</th> <th>OS X</th> <th>Windows</th> <th>Coverage</th> <th>Downloads</th> </tr> </thead><tbody><tr> <td colspan="2" align="center"> <a href="https://travis-ci.org/kaelzhang/node-ignore"> <img src="https://travis-ci.org/kaelzhang/node-ignore.svg?branch=master" alt="Build Status" /></a> </td> <td align="center"> <a href="https://ci.appveyor.com/project/kaelzhang/node-ignore"> <img src="https://ci.appveyor.com/api/projects/status/github/kaelzhang/node-ignore?branch=master&svg=true" alt="Windows Build Status" /></a> </td> <td align="center"> <a href="https://codecov.io/gh/kaelzhang/node-ignore"> <img src="https://codecov.io/gh/kaelzhang/node-ignore/branch/master/graph/badge.svg" alt="Coverage Status" /></a> </td> <td align="center"> <a href="https://www.npmjs.org/package/ignore"> <img src="http://img.shields.io/npm/dm/ignore.svg" alt="npm module downloads per month" /></a> </td> </tr></tbody></table> # ignore `ignore` is a manager, filter and parser which implemented in pure JavaScript according to the .gitignore [spec](http://git-scm.com/docs/gitignore). Pay attention that [`minimatch`](https://www.npmjs.org/package/minimatch) does not work in the gitignore way. To filter filenames according to .gitignore file, I recommend this module. ##### Tested on - Linux + Node: `0.8` - `7.x` - Windows + Node: `0.10` - `7.x`, node < `0.10` is not tested due to the lack of support of appveyor. Actually, `ignore` does not rely on any versions of node specially. Since `4.0.0`, ignore will no longer support `node < 6` by default, to use in node < 6, `require('ignore/legacy')`. For details, see [CHANGELOG](https://github.com/kaelzhang/node-ignore/blob/master/CHANGELOG.md). ## Table Of Main Contents - [Usage](#usage) - [`Pathname` Conventions](#pathname-conventions) - [Guide for 2.x -> 3.x](#upgrade-2x---3x) - [Guide for 3.x -> 4.x](#upgrade-3x---4x) - See Also: - [`glob-gitignore`](https://www.npmjs.com/package/glob-gitignore) matches files using patterns and filters them according to gitignore rules. ## Usage ```js import ignore from 'ignore' const ig = ignore().add(['.abc/*', '!.abc/d/']) ``` ### Filter the given paths ```js const paths = [ '.abc/a.js', // filtered out '.abc/d/e.js' // included ] ig.filter(paths) // ['.abc/d/e.js'] ig.ignores('.abc/a.js') // true ``` ### As the filter function ```js paths.filter(ig.createFilter()); // ['.abc/d/e.js'] ``` ### Win32 paths will be handled ```js ig.filter(['.abc\\a.js', '.abc\\d\\e.js']) // if the code above runs on windows, the result will be // ['.abc\\d\\e.js'] ``` ## Why another ignore? - `ignore` is a standalone module, and is much simpler so that it could easy work with other programs, unlike [isaacs](https://npmjs.org/~isaacs)'s [fstream-ignore](https://npmjs.org/package/fstream-ignore) which must work with the modules of the fstream family. - `ignore` only contains utility methods to filter paths according to the specified ignore rules, so - `ignore` never try to find out ignore rules by traversing directories or fetching from git configurations. - `ignore` don't cares about sub-modules of git projects. - Exactly according to [gitignore man page](http://git-scm.com/docs/gitignore), fixes some known matching issues of fstream-ignore, such as: - '`/*.js`' should only match '`a.js`', but not '`abc/a.js`'. - '`**/foo`' should match '`foo`' anywhere. - Prevent re-including a file if a parent directory of that file is excluded. - Handle trailing whitespaces: - `'a '`(one space) should not match `'a '`(two spaces). - `'a \ '` matches `'a '` - All test cases are verified with the result of `git check-ignore`. # Methods ## .add(pattern: string | Ignore): this ## .add(patterns: Array<string | Ignore>): this - **pattern** `String | Ignore` An ignore pattern string, or the `Ignore` instance - **patterns** `Array<String | Ignore>` Array of ignore patterns. Adds a rule or several rules to the current manager. Returns `this` Notice that a line starting with `'#'`(hash) is treated as a comment. Put a backslash (`'\'`) in front of the first hash for patterns that begin with a hash, if you want to ignore a file with a hash at the beginning of the filename. ```js ignore().add('#abc').ignores('#abc') // false ignore().add('\#abc').ignores('#abc') // true ``` `pattern` could either be a line of ignore pattern or a string of multiple ignore patterns, which means we could just `ignore().add()` the content of a ignore file: ```js ignore() .add(fs.readFileSync(filenameOfGitignore).toString()) .filter(filenames) ``` `pattern` could also be an `ignore` instance, so that we could easily inherit the rules of another `Ignore` instance. ## <strike>.addIgnoreFile(path)</strike> REMOVED in `3.x` for now. To upgrade `ignore@2.x` up to `3.x`, use ```js import fs from 'fs' if (fs.existsSync(filename)) { ignore().add(fs.readFileSync(filename).toString()) } ``` instead. ## .filter(paths: Array<Pathname>): Array<Pathname> ```ts type Pathname = string ``` Filters the given array of pathnames, and returns the filtered array. - **paths** `Array.<Pathname>` The array of `pathname`s to be filtered. ### `Pathname` Conventions: #### 1. `Pathname` should be a `path.relative()`d pathname `Pathname` should be a string that have been `path.join()`ed, or the return value of `path.relative()` to the current directory. ```js // WRONG ig.ignores('./abc') // WRONG, for it will never happen. // If the gitignore rule locates at the root directory, // `'/abc'` should be changed to `'abc'`. // ``` // path.relative('/', '/abc') -> 'abc' // ``` ig.ignores('/abc') // Right ig.ignores('abc') // Right ig.ignores(path.join('./abc')) // path.join('./abc') -> 'abc' ``` In other words, each `Pathname` here should be a relative path to the directory of the gitignore rules. Suppose the dir structure is: ``` /path/to/your/repo |-- a | |-- a.js | |-- .b | |-- .c |-- .DS_store ``` Then the `paths` might be like this: ```js [ 'a/a.js' '.b', '.c/.DS_store' ] ``` Usually, you could use [`glob`](http://npmjs.org/package/glob) with `option.mark = true` to fetch the structure of the current directory: ```js import glob from 'glob' glob('**', { // Adds a / character to directory matches. mark: true }, (err, files) => { if (err) { return console.error(err) } let filtered = ignore().add(patterns).filter(files) console.log(filtered) }) ``` #### 2. filenames and dirnames `node-ignore` does NO `fs.stat` during path matching, so for the example below: ```js ig.add('config/') // `ig` does NOT know if 'config' is a normal file, directory or something ig.ignores('config') // And it returns `false` ig.ignores('config/') // returns `true` ``` Specially for people who develop some library based on `node-ignore`, it is important to understand that. ## .ignores(pathname: Pathname): boolean > new in 3.2.0 Returns `Boolean` whether `pathname` should be ignored. ```js ig.ignores('.abc/a.js') // true ``` ## .createFilter() Creates a filter function which could filter an array of paths with `Array.prototype.filter`. Returns `function(path)` the filter function. ## `options.ignorecase` since 4.0.0 Similar as the `core.ignorecase` option of [git-config](https://git-scm.com/docs/git-config), `node-ignore` will be case insensitive if `options.ignorecase` is set to `true` (default value), otherwise case sensitive. ```js const ig = ignore({ ignorecase: false }) ig.add('*.png') ig.ignores('*.PNG') // false ``` **** # Upgrade Guide ## Upgrade 2.x -> 3.x - All `options` of 2.x are unnecessary and removed, so just remove them. - `ignore()` instance is no longer an [`EventEmitter`](nodejs.org/api/events.html), and all events are unnecessary and removed. - `.addIgnoreFile()` is removed, see the [.addIgnoreFile](#addignorefilepath) section for details. ## Upgrade 3.x -> 4.x Since `4.0.0`, `ignore` will no longer support node < 6, to use `ignore` in node < 6: ```js var ignore = require('ignore/legacy') ``` **** # Collaborators - [@whitecolor](https://github.com/whitecolor) *Alex* - [@SamyPesse](https://github.com/SamyPesse) *Samy Pessé* - [@azproduction](https://github.com/azproduction) *Mikhail Davydov* - [@TrySound](https://github.com/TrySound) *Bogdan Chadkin* - [@JanMattner](https://github.com/JanMattner) *Jan Mattner* - [@ntwb](https://github.com/ntwb) *Stephen Edgar* - [@kasperisager](https://github.com/kasperisager) *Kasper Isager* - [@sandersn](https://github.com/sandersn) *Nathan Shively-Sanders* A JSON with color names and its values. Based on http://dev.w3.org/csswg/css-color/#named-colors. [](https://nodei.co/npm/color-name/) ```js var colors = require('color-name'); colors.red //[255,0,0] ``` <a href="LICENSE"><img src="https://upload.wikimedia.org/wikipedia/commons/0/0c/MIT_logo.svg" width="120"/></a> # fast-levenshtein - Levenshtein algorithm in Javascript [](http://travis-ci.org/hiddentao/fast-levenshtein) [](https://badge.fury.io/js/fast-levenshtein) [](https://www.npmjs.com/package/fast-levenshtein) [](https://twitter.com/hiddentao) An efficient Javascript implementation of the [Levenshtein algorithm](http://en.wikipedia.org/wiki/Levenshtein_distance) with locale-specific collator support. ## Features * Works in node.js and in the browser. * Better performance than other implementations by not needing to store the whole matrix ([more info](http://www.codeproject.com/Articles/13525/Fast-memory-efficient-Levenshtein-algorithm)). * Locale-sensitive string comparisions if needed. * Comprehensive test suite and performance benchmark. * Small: <1 KB minified and gzipped ## Installation ### node.js Install using [npm](http://npmjs.org/): ```bash $ npm install fast-levenshtein ``` ### Browser Using bower: ```bash $ bower install fast-levenshtein ``` If you are not using any module loader system then the API will then be accessible via the `window.Levenshtein` object. ## Examples **Default usage** ```javascript var levenshtein = require('fast-levenshtein'); var distance = levenshtein.get('back', 'book'); // 2 var distance = levenshtein.get('我愛你', '我叫你'); // 1 ``` **Locale-sensitive string comparisons** It supports using [Intl.Collator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Collator) for locale-sensitive string comparisons: ```javascript var levenshtein = require('fast-levenshtein'); levenshtein.get('mikailovitch', 'Mikhaïlovitch', { useCollator: true}); // 1 ``` ## Building and Testing To build the code and run the tests: ```bash $ npm install -g grunt-cli $ npm install $ npm run build ``` ## Performance _Thanks to [Titus Wormer](https://github.com/wooorm) for [encouraging me](https://github.com/hiddentao/fast-levenshtein/issues/1) to do this._ Benchmarked against other node.js levenshtein distance modules (on Macbook Air 2012, Core i7, 8GB RAM): ```bash Running suite Implementation comparison [benchmark/speed.js]... >> levenshtein-edit-distance x 234 ops/sec ±3.02% (73 runs sampled) >> levenshtein-component x 422 ops/sec ±4.38% (83 runs sampled) >> levenshtein-deltas x 283 ops/sec ±3.83% (78 runs sampled) >> natural x 255 ops/sec ±0.76% (88 runs sampled) >> levenshtein x 180 ops/sec ±3.55% (86 runs sampled) >> fast-levenshtein x 1,792 ops/sec ±2.72% (95 runs sampled) Benchmark done. Fastest test is fast-levenshtein at 4.2x faster than levenshtein-component ``` You can run this benchmark yourself by doing: ```bash $ npm install $ npm run build $ npm run benchmark ``` ## Contributing If you wish to submit a pull request please update and/or create new tests for any changes you make and ensure the grunt build passes. See [CONTRIBUTING.md](https://github.com/hiddentao/fast-levenshtein/blob/master/CONTRIBUTING.md) for details. ## License MIT - see [LICENSE.md](https://github.com/hiddentao/fast-levenshtein/blob/master/LICENSE.md) # mkdirp-classic Just a non-deprecated mirror of [mkdirp 0.5.2](https://github.com/substack/node-mkdirp/tree/0.5.1) for use in modules where we depend on the non promise interface. ``` npm install mkdirp-classic ``` ## Usage ``` js // See the above link ``` ## License MIT # brace-expansion [Brace expansion](https://www.gnu.org/software/bash/manual/html_node/Brace-Expansion.html), as known from sh/bash, in JavaScript. [](http://travis-ci.org/juliangruber/brace-expansion) [](https://www.npmjs.org/package/brace-expansion) [](https://greenkeeper.io/) [](https://ci.testling.com/juliangruber/brace-expansion) ## Example ```js var expand = require('brace-expansion'); expand('file-{a,b,c}.jpg') // => ['file-a.jpg', 'file-b.jpg', 'file-c.jpg'] expand('-v{,,}') // => ['-v', '-v', '-v'] expand('file{0..2}.jpg') // => ['file0.jpg', 'file1.jpg', 'file2.jpg'] expand('file-{a..c}.jpg') // => ['file-a.jpg', 'file-b.jpg', 'file-c.jpg'] expand('file{2..0}.jpg') // => ['file2.jpg', 'file1.jpg', 'file0.jpg'] expand('file{0..4..2}.jpg') // => ['file0.jpg', 'file2.jpg', 'file4.jpg'] expand('file-{a..e..2}.jpg') // => ['file-a.jpg', 'file-c.jpg', 'file-e.jpg'] expand('file{00..10..5}.jpg') // => ['file00.jpg', 'file05.jpg', 'file10.jpg'] expand('{{A..C},{a..c}}') // => ['A', 'B', 'C', 'a', 'b', 'c'] expand('ppp{,config,oe{,conf}}') // => ['ppp', 'pppconfig', 'pppoe', 'pppoeconf'] ``` ## API ```js var expand = require('brace-expansion'); ``` ### var expanded = expand(str) Return an array of all possible and valid expansions of `str`. If none are found, `[str]` is returned. Valid expansions are: ```js /^(.*,)+(.+)?$/ // {a,b,...} ``` A comma separated list of options, like `{a,b}` or `{a,{b,c}}` or `{,a,}`. ```js /^-?\d+\.\.-?\d+(\.\.-?\d+)?$/ // {x..y[..incr]} ``` A numeric sequence from `x` to `y` inclusive, with optional increment. If `x` or `y` start with a leading `0`, all the numbers will be padded to have equal length. Negative numbers and backwards iteration work too. ```js /^-?\d+\.\.-?\d+(\.\.-?\d+)?$/ // {x..y[..incr]} ``` An alphabetic sequence from `x` to `y` inclusive, with optional increment. `x` and `y` must be exactly one character, and if given, `incr` must be a number. For compatibility reasons, the string `${` is not eligible for brace expansion. ## Installation With [npm](https://npmjs.org) do: ```bash npm install brace-expansion ``` ## Contributors - [Julian Gruber](https://github.com/juliangruber) - [Isaac Z. Schlueter](https://github.com/isaacs) ## Sponsors This module is proudly supported by my [Sponsors](https://github.com/juliangruber/sponsors)! Do you want to support modules like this to improve their quality, stability and weigh in on new features? Then please consider donating to my [Patreon](https://www.patreon.com/juliangruber). Not sure how much of my modules you're using? Try [feross/thanks](https://github.com/feross/thanks)! ## License (MIT) Copyright (c) 2013 Julian Gruber &lt;julian@juliangruber.com&gt; Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # Visitor utilities for AssemblyScript Compiler transformers ## Example ### List Fields The transformer: ```ts import { ClassDeclaration, FieldDeclaration, MethodDeclaration, } from "../../as"; import { ClassDecorator, registerDecorator } from "../decorator"; import { toString } from "../utils"; class ListMembers extends ClassDecorator { visitFieldDeclaration(node: FieldDeclaration): void { if (!node.name) console.log(toString(node) + "\n"); const name = toString(node.name); const _type = toString(node.type!); this.stdout.write(name + ": " + _type + "\n"); } visitMethodDeclaration(node: MethodDeclaration): void { const name = toString(node.name); if (name == "constructor") { return; } const sig = toString(node.signature); this.stdout.write(name + ": " + sig + "\n"); } visitClassDeclaration(node: ClassDeclaration): void { this.visit(node.members); } get name(): string { return "list"; } } export = registerDecorator(new ListMembers()); ``` assembly/foo.ts: ```ts @list class Foo { a: u8; b: bool; i: i32; } ``` And then compile with `--transform` flag: ``` asc assembly/foo.ts --transform ./dist/examples/list --noEmit ``` Which prints the following to the console: ``` a: u8 b: bool i: i32 ``` # json-buffer JSON functions that can convert buffers! [](http://travis-ci.org/dominictarr/json-buffer) [](https://ci.testling.com/dominictarr/json-buffer) JSON mangles buffers by converting to an array... which isn't helpful. json-buffers converts to base64 instead, and deconverts base64 to a buffer. ``` js var JSONB = require('json-buffer') var Buffer = require('buffer').Buffer var str = JSONB.stringify(new Buffer('hello there!')) console.log(JSONB.parse(str)) //GET a BUFFER back ``` ## License MIT # `react-is` This package allows you to test arbitrary values and see if they're a particular React element type. ## Installation ```sh # Yarn yarn add react-is # NPM npm install react-is ``` ## Usage ### Determining if a Component is Valid ```js import React from "react"; import * as ReactIs from "react-is"; class ClassComponent extends React.Component { render() { return React.createElement("div"); } } const FunctionComponent = () => React.createElement("div"); const ForwardRefComponent = React.forwardRef((props, ref) => React.createElement(Component, { forwardedRef: ref, ...props }) ); const Context = React.createContext(false); ReactIs.isValidElementType("div"); // true ReactIs.isValidElementType(ClassComponent); // true ReactIs.isValidElementType(FunctionComponent); // true ReactIs.isValidElementType(ForwardRefComponent); // true ReactIs.isValidElementType(Context.Provider); // true ReactIs.isValidElementType(Context.Consumer); // true ReactIs.isValidElementType(React.createFactory("div")); // true ``` ### Determining an Element's Type #### Context ```js import React from "react"; import * as ReactIs from 'react-is'; const ThemeContext = React.createContext("blue"); ReactIs.isContextConsumer(<ThemeContext.Consumer />); // true ReactIs.isContextProvider(<ThemeContext.Provider />); // true ReactIs.typeOf(<ThemeContext.Provider />) === ReactIs.ContextProvider; // true ReactIs.typeOf(<ThemeContext.Consumer />) === ReactIs.ContextConsumer; // true ``` #### Element ```js import React from "react"; import * as ReactIs from 'react-is'; ReactIs.isElement(<div />); // true ReactIs.typeOf(<div />) === ReactIs.Element; // true ``` #### Fragment ```js import React from "react"; import * as ReactIs from 'react-is'; ReactIs.isFragment(<></>); // true ReactIs.typeOf(<></>) === ReactIs.Fragment; // true ``` #### Portal ```js import React from "react"; import ReactDOM from "react-dom"; import * as ReactIs from 'react-is'; const div = document.createElement("div"); const portal = ReactDOM.createPortal(<div />, div); ReactIs.isPortal(portal); // true ReactIs.typeOf(portal) === ReactIs.Portal; // true ``` #### StrictMode ```js import React from "react"; import * as ReactIs from 'react-is'; ReactIs.isStrictMode(<React.StrictMode />); // true ReactIs.typeOf(<React.StrictMode />) === ReactIs.StrictMode; // true ``` <h1 align=center> <a href="http://chaijs.com" title="Chai Documentation"> <img alt="ChaiJS" src="http://chaijs.com/img/chai-logo.png"/> type-detect </a> </h1> <br> <p align=center> Improved typeof detection for <a href="http://nodejs.org">node</a> and the browser. </p> <p align=center> <a href="./LICENSE"> <img alt="license:mit" src="https://img.shields.io/badge/license-mit-green.svg?style=flat-square" /> </a> <a href="https://github.com/chaijs/type-detect/releases"> <img alt="tag:?" src="https://img.shields.io/github/tag/chaijs/type-detect.svg?style=flat-square" /> </a> <a href="https://travis-ci.org/chaijs/type-detect"> <img alt="build:?" src="https://img.shields.io/travis/chaijs/type-detect/master.svg?style=flat-square" /> </a> <a href="https://coveralls.io/r/chaijs/type-detect"> <img alt="coverage:?" src="https://img.shields.io/coveralls/chaijs/type-detect/master.svg?style=flat-square" /> </a> <a href="https://www.npmjs.com/packages/type-detect"> <img alt="npm:?" src="https://img.shields.io/npm/v/type-detect.svg?style=flat-square" /> </a> <a href="https://www.npmjs.com/packages/type-detect"> <img alt="dependencies:?" src="https://img.shields.io/npm/dm/type-detect.svg?style=flat-square" /> </a> <a href=""> <img alt="devDependencies:?" src="https://img.shields.io/david/chaijs/type-detect.svg?style=flat-square" /> </a> <br/> <table> <tr><th colspan=6>Supported Browsers</th></tr> <tr> <th align=center><img src="https://camo.githubusercontent.com/ab586f11dfcb49bf5f2c2fa9adadc5e857de122a/687474703a2f2f73766773686172652e636f6d2f692f3278532e737667" alt=""> Chrome</th> <th align=center><img src="https://camo.githubusercontent.com/98cca3108c18dcfaa62667b42046540c6822cdac/687474703a2f2f73766773686172652e636f6d2f692f3279352e737667" alt=""> Edge</th> <th align=center><img src="https://camo.githubusercontent.com/acdcb09840a9e1442cbaf1b684f95ab3c3f41cf4/687474703a2f2f73766773686172652e636f6d2f692f3279462e737667" alt=""> Firefox</th> <th align=center><img src="https://camo.githubusercontent.com/728f8cb0bee9ed58ab85e39266f1152c53e0dffd/687474703a2f2f73766773686172652e636f6d2f692f3278342e737667" alt=""> Safari</th> <th align=center><img src="https://camo.githubusercontent.com/96a2317034dee0040d0a762e7a30c3c650c45aac/687474703a2f2f73766773686172652e636f6d2f692f3279532e737667" alt=""> IE</th> </tr><tr> <td align=center>✅</td> <td align=center>✅</td> <td align=center>✅</td> <td align=center>✅</td> <td align=center>9, 10, 11</td> </tr> </table> <br> <a href="https://chai-slack.herokuapp.com/"> <img alt="Join the Slack chat" src="https://img.shields.io/badge/slack-join%20chat-E2206F.svg?style=flat-square" /> </a> <a href="https://gitter.im/chaijs/chai"> <img alt="Join the Gitter chat" src="https://img.shields.io/badge/gitter-join%20chat-D0104D.svg?style=flat-square" /> </a> </p> ## What is Type-Detect? Type Detect is a module which you can use to detect the type of a given object. It returns a string representation of the object's type, either using [`typeof`](http://www.ecma-international.org/ecma-262/6.0/index.html#sec-typeof-operator) or [`@@toStringTag`](http://www.ecma-international.org/ecma-262/6.0/index.html#sec-symbol.tostringtag). It also normalizes some object names for consistency among browsers. ## Why? The `typeof` operator will only specify primitive values; everything else is `"object"` (including `null`, arrays, regexps, etc). Many developers use `Object.prototype.toString()` - which is a fine alternative and returns many more types (null returns `[object Null]`, Arrays as `[object Array]`, regexps as `[object RegExp]` etc). Sadly, `Object.prototype.toString` is slow, and buggy. By slow - we mean it is slower than `typeof`. By buggy - we mean that some values (like Promises, the global object, iterators, dataviews, a bunch of HTML elements) all report different things in different browsers. `type-detect` fixes all of the shortcomings with `Object.prototype.toString`. We have extra code to speed up checks of JS and DOM objects, as much as 20-30x faster for some values. `type-detect` also fixes any consistencies with these objects. ## Installation ### Node.js `type-detect` is available on [npm](http://npmjs.org). To install it, type: $ npm install type-detect ### Browsers You can also use it within the browser; install via npm and use the `type-detect.js` file found within the download. For example: ```html <script src="./node_modules/type-detect/type-detect.js"></script> ``` ## Usage The primary export of `type-detect` is function that can serve as a replacement for `typeof`. The results of this function will be more specific than that of native `typeof`. ```js var type = require('type-detect'); ``` #### array ```js assert(type([]) === 'Array'); assert(type(new Array()) === 'Array'); ``` #### regexp ```js assert(type(/a-z/gi) === 'RegExp'); assert(type(new RegExp('a-z')) === 'RegExp'); ``` #### function ```js assert(type(function () {}) === 'function'); ``` #### arguments ```js (function () { assert(type(arguments) === 'Arguments'); })(); ``` #### date ```js assert(type(new Date) === 'Date'); ``` #### number ```js assert(type(1) === 'number'); assert(type(1.234) === 'number'); assert(type(-1) === 'number'); assert(type(-1.234) === 'number'); assert(type(Infinity) === 'number'); assert(type(NaN) === 'number'); assert(type(new Number(1)) === 'Number'); // note - the object version has a capital N ``` #### string ```js assert(type('hello world') === 'string'); assert(type(new String('hello')) === 'String'); // note - the object version has a capital S ``` #### null ```js assert(type(null) === 'null'); assert(type(undefined) !== 'null'); ``` #### undefined ```js assert(type(undefined) === 'undefined'); assert(type(null) !== 'undefined'); ``` #### object ```js var Noop = function () {}; assert(type({}) === 'Object'); assert(type(Noop) !== 'Object'); assert(type(new Noop) === 'Object'); assert(type(new Object) === 'Object'); ``` #### ECMA6 Types All new ECMAScript 2015 objects are also supported, such as Promises and Symbols: ```js assert(type(new Map() === 'Map'); assert(type(new WeakMap()) === 'WeakMap'); assert(type(new Set()) === 'Set'); assert(type(new WeakSet()) === 'WeakSet'); assert(type(Symbol()) === 'symbol'); assert(type(new Promise(callback) === 'Promise'); assert(type(new Int8Array()) === 'Int8Array'); assert(type(new Uint8Array()) === 'Uint8Array'); assert(type(new UInt8ClampedArray()) === 'Uint8ClampedArray'); assert(type(new Int16Array()) === 'Int16Array'); assert(type(new Uint16Array()) === 'Uint16Array'); assert(type(new Int32Array()) === 'Int32Array'); assert(type(new UInt32Array()) === 'Uint32Array'); assert(type(new Float32Array()) === 'Float32Array'); assert(type(new Float64Array()) === 'Float64Array'); assert(type(new ArrayBuffer()) === 'ArrayBuffer'); assert(type(new DataView(arrayBuffer)) === 'DataView'); ``` Also, if you use `Symbol.toStringTag` to change an Objects return value of the `toString()` Method, `type()` will return this value, e.g: ```js var myObject = {}; myObject[Symbol.toStringTag] = 'myCustomType'; assert(type(myObject) === 'myCustomType'); ``` # prelude.ls [](https://travis-ci.org/gkz/prelude-ls) is a functionally oriented utility library. It is powerful and flexible. Almost all of its functions are curried. It is written in, and is the recommended base library for, <a href="http://livescript.net">LiveScript</a>. See **[the prelude.ls site](http://preludels.com)** for examples, a reference, and more. You can install via npm `npm install prelude-ls` ### Development `make test` to test `make build` to build `lib` from `src` `make build-browser` to build browser versions # eslint-utils [](https://www.npmjs.com/package/eslint-utils) [](http://www.npmtrends.com/eslint-utils) [](https://github.com/mysticatea/eslint-utils/actions) [](https://codecov.io/gh/mysticatea/eslint-utils) [](https://david-dm.org/mysticatea/eslint-utils) ## 🏁 Goal This package provides utility functions and classes for make ESLint custom rules. For examples: - [getStaticValue](https://eslint-utils.mysticatea.dev/api/ast-utils.html#getstaticvalue) evaluates static value on AST. - [ReferenceTracker](https://eslint-utils.mysticatea.dev/api/scope-utils.html#referencetracker-class) checks the members of modules/globals as handling assignments and destructuring. ## 📖 Usage See [documentation](https://eslint-utils.mysticatea.dev/). ## 📰 Changelog See [releases](https://github.com/mysticatea/eslint-utils/releases). ## ❤️ Contributing Welcome contributing! Please use GitHub's Issues/PRs. ### Development Tools - `npm test` runs tests and measures coverage. - `npm run clean` removes the coverage result of `npm test` command. - `npm run coverage` shows the coverage result of the last `npm test` command. - `npm run lint` runs ESLint. - `npm run watch` runs tests on each file change. aproba ====== A ridiculously light-weight function argument validator ``` var validate = require("aproba") function myfunc(a, b, c) { // `a` must be a string, `b` a number, `c` a function validate('SNF', arguments) // [a,b,c] is also valid } myfunc('test', 23, function () {}) // ok myfunc(123, 23, function () {}) // type error myfunc('test', 23) // missing arg error myfunc('test', 23, function () {}, true) // too many args error ``` Valid types are: | type | description | :--: | :---------- | * | matches any type | A | `Array.isArray` OR an `arguments` object | S | typeof == string | N | typeof == number | F | typeof == function | O | typeof == object and not type A and not type E | B | typeof == boolean | E | `instanceof Error` OR `null` **(special: see below)** | Z | == `null` Validation failures throw one of three exception types, distinguished by a `code` property of `EMISSINGARG`, `EINVALIDTYPE` or `ETOOMANYARGS`. If you pass in an invalid type then it will throw with a code of `EUNKNOWNTYPE`. If an **error** argument is found and is not null then the remaining arguments are optional. That is, if you say `ESO` then that's like using a non-magical `E` in: `E|ESO|ZSO`. ### But I have optional arguments?! You can provide more than one signature by separating them with pipes `|`. If any signature matches the arguments then they'll be considered valid. So for example, say you wanted to write a signature for `fs.createWriteStream`. The docs for it describe it thusly: ``` fs.createWriteStream(path[, options]) ``` This would be a signature of `SO|S`. That is, a string and and object, or just a string. Now, if you read the full `fs` docs, you'll see that actually path can ALSO be a buffer. And options can be a string, that is: ``` path <String> | <Buffer> options <String> | <Object> ``` To reproduce this you have to fully enumerate all of the possible combinations and that implies a signature of `SO|SS|OO|OS|S|O`. The awkwardness is a feature: It reminds you of the complexity you're adding to your API when you do this sort of thing. ### Browser support This has no dependencies and should work in browsers, though you'll have noisier stack traces. ### Why this exists I wanted a very simple argument validator. It needed to do two things: 1. Be more concise and easier to use than assertions 2. Not encourage an infinite bikeshed of DSLs This is why types are specified by a single character and there's no such thing as an optional argument. This is not intended to validate user data. This is specifically about asserting the interface of your functions. If you need greater validation, I encourage you to write them by hand or look elsewhere. [](https://codecov.io/gh/alepop/ed25519-hd-key) ed25519 HD Key ===== Key Derivation for `ed25519` ------------ [SLIP-0010](https://github.com/satoshilabs/slips/blob/master/slip-0010.md) - Specification Installation ------------ npm i --save ed25519-hd-key Usage ----- **example:** ```js const { derivePath, getMasterKeyFromSeed, getPublicKey } = require('ed25519-hd-key') const hexSeed = 'fffcf9f6f3f0edeae7e4e1dedbd8d5d2cfccc9c6c3c0bdbab7b4b1aeaba8a5a29f9c999693908d8a8784817e7b7875726f6c696663605d5a5754514e4b484542'; const { key, chainCode } = getMasterKeyFromSeed(hexSeed); console.log(key.toString('hex')) // => 2b4be7f19ee27bbf30c667b642d5f4aa69fd169872f8fc3059c08ebae2eb19e7 console.log(chainCode.toString('hex')); // => 90046a93de5380a72b5e45010748567d5ea02bbf6522f979e05c0d8d8ca9fffb const { key, chainCode} = derivePath("m/0'/2147483647'", hexSeed); console.log(key.toString('hex')) // => ea4f5bfe8694d8bb74b7b59404632fd5968b774ed545e810de9c32a4fb4192f4 console.log(chainCode.toString('hex')); // => 138f0b2551bcafeca6ff2aa88ba8ed0ed8de070841f0c4ef0165df8181eaad7f console.log(getPublicKey(key).toString('hex')) // => 005ba3b9ac6e90e83effcd25ac4e58a1365a9e35a3d3ae5eb07b9e4d90bcf7506d ``` Tests ----- ``` npm test ``` References ---------- [SLIP-0010](https://github.com/satoshilabs/slips/blob/master/slip-0010.md) [BIP-0032](https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki) [BIP-0044](https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki) # <img src="docs_app/assets/Rx_Logo_S.png" alt="RxJS Logo" width="86" height="86"> RxJS: Reactive Extensions For JavaScript [](https://circleci.com/gh/ReactiveX/rxjs/tree/6.x) [](http://badge.fury.io/js/%40reactivex%2Frxjs) [](https://gitter.im/Reactive-Extensions/RxJS?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) # RxJS 6 Stable ### MIGRATION AND RELEASE INFORMATION: Find out how to update to v6, **automatically update your TypeScript code**, and more! - [Current home is MIGRATION.md](./docs_app/content/guide/v6/migration.md) ### FOR V 5.X PLEASE GO TO [THE 5.0 BRANCH](https://github.com/ReactiveX/rxjs/tree/5.x) Reactive Extensions Library for JavaScript. This is a rewrite of [Reactive-Extensions/RxJS](https://github.com/Reactive-Extensions/RxJS) and is the latest production-ready version of RxJS. This rewrite is meant to have better performance, better modularity, better debuggable call stacks, while staying mostly backwards compatible, with some breaking changes that reduce the API surface. [Apache 2.0 License](LICENSE.txt) - [Code of Conduct](CODE_OF_CONDUCT.md) - [Contribution Guidelines](CONTRIBUTING.md) - [Maintainer Guidelines](doc_app/content/maintainer-guidelines.md) - [API Documentation](https://rxjs.dev/) ## Versions In This Repository - [master](https://github.com/ReactiveX/rxjs/commits/master) - This is all of the current, unreleased work, which is against v6 of RxJS right now - [stable](https://github.com/ReactiveX/rxjs/commits/stable) - This is the branch for the latest version you'd get if you do `npm install rxjs` ## Important By contributing or commenting on issues in this repository, whether you've read them or not, you're agreeing to the [Contributor Code of Conduct](CODE_OF_CONDUCT.md). Much like traffic laws, ignorance doesn't grant you immunity. ## Installation and Usage ### ES6 via npm ```sh npm install rxjs ``` It's recommended to pull in the Observable creation methods you need directly from `'rxjs'` as shown below with `range`. And you can pull in any operator you need from one spot, under `'rxjs/operators'`. ```ts import { range } from "rxjs"; import { map, filter } from "rxjs/operators"; range(1, 200) .pipe( filter(x => x % 2 === 1), map(x => x + x) ) .subscribe(x => console.log(x)); ``` Here, we're using the built-in `pipe` method on Observables to combine operators. See [pipeable operators](https://github.com/ReactiveX/rxjs/blob/master/doc/pipeable-operators.md) for more information. ### CommonJS via npm To install this library for CommonJS (CJS) usage, use the following command: ```sh npm install rxjs ``` (Note: destructuring available in Node 8+) ```js const { range } = require('rxjs'); const { map, filter } = require('rxjs/operators'); range(1, 200).pipe( filter(x => x % 2 === 1), map(x => x + x) ).subscribe(x => console.log(x)); ``` ### CDN For CDN, you can use [unpkg](https://unpkg.com/): https://unpkg.com/rxjs/bundles/rxjs.umd.min.js The global namespace for rxjs is `rxjs`: ```js const { range } = rxjs; const { map, filter } = rxjs.operators; range(1, 200) .pipe( filter(x => x % 2 === 1), map(x => x + x) ) .subscribe(x => console.log(x)); ``` ## Goals - Smaller overall bundles sizes - Provide better performance than preceding versions of RxJS - To model/follow the [Observable Spec Proposal](https://github.com/zenparsing/es-observable) to the observable - Provide more modular file structure in a variety of formats - Provide more debuggable call stacks than preceding versions of RxJS ## Building/Testing - `npm run build_all` - builds everything - `npm test` - runs tests - `npm run test_no_cache` - run test with `ts-node` set to false ## Performance Tests Run `npm run build_perf` or `npm run perf` to run the performance tests with `protractor`. Run `npm run perf_micro [operator]` to run micro performance test benchmarking operator. ## Adding documentation We appreciate all contributions to the documentation of any type. All of the information needed to get the docs app up and running locally as well as how to contribute can be found in the [documentation directory](./docs_app). ## Generating PNG marble diagrams The script `npm run tests2png` requires some native packages installed locally: `imagemagick`, `graphicsmagick`, and `ghostscript`. For Mac OS X with [Homebrew](http://brew.sh/): - `brew install imagemagick` - `brew install graphicsmagick` - `brew install ghostscript` - You may need to install the Ghostscript fonts manually: - Download the tarball from the [gs-fonts project](https://sourceforge.net/projects/gs-fonts) - `mkdir -p /usr/local/share/ghostscript && tar zxvf /path/to/ghostscript-fonts.tar.gz -C /usr/local/share/ghostscript` For Debian Linux: - `sudo add-apt-repository ppa:dhor/myway` - `apt-get install imagemagick` - `apt-get install graphicsmagick` - `apt-get install ghostscript` For Windows and other Operating Systems, check the download instructions here: - http://imagemagick.org - http://www.graphicsmagick.org - http://www.ghostscript.com/ cipher-base === [](https://travis-ci.org/crypto-browserify/cipher-base) Abstract base class to inherit from if you want to create streams implementing the same api as node crypto streams. Requires you to implement 2 methods `_final` and `_update`. `_update` takes a buffer and should return a buffer, `_final` takes no arguments and should return a buffer. The constructor takes one argument and that is a string which if present switches it into hash mode, i.e. the object you get from crypto.createHash or crypto.createSign, this switches the name of the final method to be the string you passed instead of `final` and returns `this` from update. semver(1) -- The semantic versioner for npm =========================================== ## Install ```bash npm install semver ```` ## Usage As a node module: ```js const semver = require('semver') semver.valid('1.2.3') // '1.2.3' semver.valid('a.b.c') // null semver.clean(' =v1.2.3 ') // '1.2.3' semver.satisfies('1.2.3', '1.x || >=2.5.0 || 5.0.0 - 7.2.3') // true semver.gt('1.2.3', '9.8.7') // false semver.lt('1.2.3', '9.8.7') // true semver.minVersion('>=1.0.0') // '1.0.0' semver.valid(semver.coerce('v2')) // '2.0.0' semver.valid(semver.coerce('42.6.7.9.3-alpha')) // '42.6.7' ``` As a command-line utility: ``` $ semver -h A JavaScript implementation of the https://semver.org/ specification Copyright Isaac Z. Schlueter Usage: semver [options] <version> [<version> [...]] Prints valid versions sorted by SemVer precedence Options: -r --range <range> Print versions that match the specified range. -i --increment [<level>] Increment a version by the specified level. Level can be one of: major, minor, patch, premajor, preminor, prepatch, or prerelease. Default level is 'patch'. Only one version may be specified. --preid <identifier> Identifier to be used to prefix premajor, preminor, prepatch or prerelease version increments. -l --loose Interpret versions and ranges loosely -p --include-prerelease Always include prerelease versions in range matching -c --coerce Coerce a string into SemVer if possible (does not imply --loose) --rtl Coerce version strings right to left --ltr Coerce version strings left to right (default) Program exits successfully if any valid version satisfies all supplied ranges, and prints all satisfying versions. If no satisfying versions are found, then exits failure. Versions are printed in ascending order, so supplying multiple versions to the utility will just sort them. ``` ## Versions A "version" is described by the `v2.0.0` specification found at <https://semver.org/>. A leading `"="` or `"v"` character is stripped off and ignored. ## Ranges A `version range` is a set of `comparators` which specify versions that satisfy the range. A `comparator` is composed of an `operator` and a `version`. The set of primitive `operators` is: * `<` Less than * `<=` Less than or equal to * `>` Greater than * `>=` Greater than or equal to * `=` Equal. If no operator is specified, then equality is assumed, so this operator is optional, but MAY be included. For example, the comparator `>=1.2.7` would match the versions `1.2.7`, `1.2.8`, `2.5.3`, and `1.3.9`, but not the versions `1.2.6` or `1.1.0`. Comparators can be joined by whitespace to form a `comparator set`, which is satisfied by the **intersection** of all of the comparators it includes. A range is composed of one or more comparator sets, joined by `||`. A version matches a range if and only if every comparator in at least one of the `||`-separated comparator sets is satisfied by the version. For example, the range `>=1.2.7 <1.3.0` would match the versions `1.2.7`, `1.2.8`, and `1.2.99`, but not the versions `1.2.6`, `1.3.0`, or `1.1.0`. The range `1.2.7 || >=1.2.9 <2.0.0` would match the versions `1.2.7`, `1.2.9`, and `1.4.6`, but not the versions `1.2.8` or `2.0.0`. ### Prerelease Tags If a version has a prerelease tag (for example, `1.2.3-alpha.3`) then it will only be allowed to satisfy comparator sets if at least one comparator with the same `[major, minor, patch]` tuple also has a prerelease tag. For example, the range `>1.2.3-alpha.3` would be allowed to match the version `1.2.3-alpha.7`, but it would *not* be satisfied by `3.4.5-alpha.9`, even though `3.4.5-alpha.9` is technically "greater than" `1.2.3-alpha.3` according to the SemVer sort rules. The version range only accepts prerelease tags on the `1.2.3` version. The version `3.4.5` *would* satisfy the range, because it does not have a prerelease flag, and `3.4.5` is greater than `1.2.3-alpha.7`. The purpose for this behavior is twofold. First, prerelease versions frequently are updated very quickly, and contain many breaking changes that are (by the author's design) not yet fit for public consumption. Therefore, by default, they are excluded from range matching semantics. Second, a user who has opted into using a prerelease version has clearly indicated the intent to use *that specific* set of alpha/beta/rc versions. By including a prerelease tag in the range, the user is indicating that they are aware of the risk. However, it is still not appropriate to assume that they have opted into taking a similar risk on the *next* set of prerelease versions. Note that this behavior can be suppressed (treating all prerelease versions as if they were normal versions, for the purpose of range matching) by setting the `includePrerelease` flag on the options object to any [functions](https://github.com/npm/node-semver#functions) that do range matching. #### Prerelease Identifiers The method `.inc` takes an additional `identifier` string argument that will append the value of the string as a prerelease identifier: ```javascript semver.inc('1.2.3', 'prerelease', 'beta') // '1.2.4-beta.0' ``` command-line example: ```bash $ semver 1.2.3 -i prerelease --preid beta 1.2.4-beta.0 ``` Which then can be used to increment further: ```bash $ semver 1.2.4-beta.0 -i prerelease 1.2.4-beta.1 ``` ### Advanced Range Syntax Advanced range syntax desugars to primitive comparators in deterministic ways. Advanced ranges may be combined in the same way as primitive comparators using white space or `||`. #### Hyphen Ranges `X.Y.Z - A.B.C` Specifies an inclusive set. * `1.2.3 - 2.3.4` := `>=1.2.3 <=2.3.4` If a partial version is provided as the first version in the inclusive range, then the missing pieces are replaced with zeroes. * `1.2 - 2.3.4` := `>=1.2.0 <=2.3.4` If a partial version is provided as the second version in the inclusive range, then all versions that start with the supplied parts of the tuple are accepted, but nothing that would be greater than the provided tuple parts. * `1.2.3 - 2.3` := `>=1.2.3 <2.4.0` * `1.2.3 - 2` := `>=1.2.3 <3.0.0` #### X-Ranges `1.2.x` `1.X` `1.2.*` `*` Any of `X`, `x`, or `*` may be used to "stand in" for one of the numeric values in the `[major, minor, patch]` tuple. * `*` := `>=0.0.0` (Any version satisfies) * `1.x` := `>=1.0.0 <2.0.0` (Matching major version) * `1.2.x` := `>=1.2.0 <1.3.0` (Matching major and minor versions) A partial version range is treated as an X-Range, so the special character is in fact optional. * `""` (empty string) := `*` := `>=0.0.0` * `1` := `1.x.x` := `>=1.0.0 <2.0.0` * `1.2` := `1.2.x` := `>=1.2.0 <1.3.0` #### Tilde Ranges `~1.2.3` `~1.2` `~1` Allows patch-level changes if a minor version is specified on the comparator. Allows minor-level changes if not. * `~1.2.3` := `>=1.2.3 <1.(2+1).0` := `>=1.2.3 <1.3.0` * `~1.2` := `>=1.2.0 <1.(2+1).0` := `>=1.2.0 <1.3.0` (Same as `1.2.x`) * `~1` := `>=1.0.0 <(1+1).0.0` := `>=1.0.0 <2.0.0` (Same as `1.x`) * `~0.2.3` := `>=0.2.3 <0.(2+1).0` := `>=0.2.3 <0.3.0` * `~0.2` := `>=0.2.0 <0.(2+1).0` := `>=0.2.0 <0.3.0` (Same as `0.2.x`) * `~0` := `>=0.0.0 <(0+1).0.0` := `>=0.0.0 <1.0.0` (Same as `0.x`) * `~1.2.3-beta.2` := `>=1.2.3-beta.2 <1.3.0` Note that prereleases in the `1.2.3` version will be allowed, if they are greater than or equal to `beta.2`. So, `1.2.3-beta.4` would be allowed, but `1.2.4-beta.2` would not, because it is a prerelease of a different `[major, minor, patch]` tuple. #### Caret Ranges `^1.2.3` `^0.2.5` `^0.0.4` Allows changes that do not modify the left-most non-zero element in the `[major, minor, patch]` tuple. In other words, this allows patch and minor updates for versions `1.0.0` and above, patch updates for versions `0.X >=0.1.0`, and *no* updates for versions `0.0.X`. Many authors treat a `0.x` version as if the `x` were the major "breaking-change" indicator. Caret ranges are ideal when an author may make breaking changes between `0.2.4` and `0.3.0` releases, which is a common practice. However, it presumes that there will *not* be breaking changes between `0.2.4` and `0.2.5`. It allows for changes that are presumed to be additive (but non-breaking), according to commonly observed practices. * `^1.2.3` := `>=1.2.3 <2.0.0` * `^0.2.3` := `>=0.2.3 <0.3.0` * `^0.0.3` := `>=0.0.3 <0.0.4` * `^1.2.3-beta.2` := `>=1.2.3-beta.2 <2.0.0` Note that prereleases in the `1.2.3` version will be allowed, if they are greater than or equal to `beta.2`. So, `1.2.3-beta.4` would be allowed, but `1.2.4-beta.2` would not, because it is a prerelease of a different `[major, minor, patch]` tuple. * `^0.0.3-beta` := `>=0.0.3-beta <0.0.4` Note that prereleases in the `0.0.3` version *only* will be allowed, if they are greater than or equal to `beta`. So, `0.0.3-pr.2` would be allowed. When parsing caret ranges, a missing `patch` value desugars to the number `0`, but will allow flexibility within that value, even if the major and minor versions are both `0`. * `^1.2.x` := `>=1.2.0 <2.0.0` * `^0.0.x` := `>=0.0.0 <0.1.0` * `^0.0` := `>=0.0.0 <0.1.0` A missing `minor` and `patch` values will desugar to zero, but also allow flexibility within those values, even if the major version is zero. * `^1.x` := `>=1.0.0 <2.0.0` * `^0.x` := `>=0.0.0 <1.0.0` ### Range Grammar Putting all this together, here is a Backus-Naur grammar for ranges, for the benefit of parser authors: ```bnf range-set ::= range ( logical-or range ) * logical-or ::= ( ' ' ) * '||' ( ' ' ) * range ::= hyphen | simple ( ' ' simple ) * | '' hyphen ::= partial ' - ' partial simple ::= primitive | partial | tilde | caret primitive ::= ( '<' | '>' | '>=' | '<=' | '=' ) partial partial ::= xr ( '.' xr ( '.' xr qualifier ? )? )? xr ::= 'x' | 'X' | '*' | nr nr ::= '0' | ['1'-'9'] ( ['0'-'9'] ) * tilde ::= '~' partial caret ::= '^' partial qualifier ::= ( '-' pre )? ( '+' build )? pre ::= parts build ::= parts parts ::= part ( '.' part ) * part ::= nr | [-0-9A-Za-z]+ ``` ## Functions All methods and classes take a final `options` object argument. All options in this object are `false` by default. The options supported are: - `loose` Be more forgiving about not-quite-valid semver strings. (Any resulting output will always be 100% strict compliant, of course.) For backwards compatibility reasons, if the `options` argument is a boolean value instead of an object, it is interpreted to be the `loose` param. - `includePrerelease` Set to suppress the [default behavior](https://github.com/npm/node-semver#prerelease-tags) of excluding prerelease tagged versions from ranges unless they are explicitly opted into. Strict-mode Comparators and Ranges will be strict about the SemVer strings that they parse. * `valid(v)`: Return the parsed version, or null if it's not valid. * `inc(v, release)`: Return the version incremented by the release type (`major`, `premajor`, `minor`, `preminor`, `patch`, `prepatch`, or `prerelease`), or null if it's not valid * `premajor` in one call will bump the version up to the next major version and down to a prerelease of that major version. `preminor`, and `prepatch` work the same way. * If called from a non-prerelease version, the `prerelease` will work the same as `prepatch`. It increments the patch version, then makes a prerelease. If the input version is already a prerelease it simply increments it. * `prerelease(v)`: Returns an array of prerelease components, or null if none exist. Example: `prerelease('1.2.3-alpha.1') -> ['alpha', 1]` * `major(v)`: Return the major version number. * `minor(v)`: Return the minor version number. * `patch(v)`: Return the patch version number. * `intersects(r1, r2, loose)`: Return true if the two supplied ranges or comparators intersect. * `parse(v)`: Attempt to parse a string as a semantic version, returning either a `SemVer` object or `null`. ### Comparison * `gt(v1, v2)`: `v1 > v2` * `gte(v1, v2)`: `v1 >= v2` * `lt(v1, v2)`: `v1 < v2` * `lte(v1, v2)`: `v1 <= v2` * `eq(v1, v2)`: `v1 == v2` This is true if they're logically equivalent, even if they're not the exact same string. You already know how to compare strings. * `neq(v1, v2)`: `v1 != v2` The opposite of `eq`. * `cmp(v1, comparator, v2)`: Pass in a comparison string, and it'll call the corresponding function above. `"==="` and `"!=="` do simple string comparison, but are included for completeness. Throws if an invalid comparison string is provided. * `compare(v1, v2)`: Return `0` if `v1 == v2`, or `1` if `v1` is greater, or `-1` if `v2` is greater. Sorts in ascending order if passed to `Array.sort()`. * `rcompare(v1, v2)`: The reverse of compare. Sorts an array of versions in descending order when passed to `Array.sort()`. * `compareBuild(v1, v2)`: The same as `compare` but considers `build` when two versions are equal. Sorts in ascending order if passed to `Array.sort()`. `v2` is greater. Sorts in ascending order if passed to `Array.sort()`. * `diff(v1, v2)`: Returns difference between two versions by the release type (`major`, `premajor`, `minor`, `preminor`, `patch`, `prepatch`, or `prerelease`), or null if the versions are the same. ### Comparators * `intersects(comparator)`: Return true if the comparators intersect ### Ranges * `validRange(range)`: Return the valid range or null if it's not valid * `satisfies(version, range)`: Return true if the version satisfies the range. * `maxSatisfying(versions, range)`: Return the highest version in the list that satisfies the range, or `null` if none of them do. * `minSatisfying(versions, range)`: Return the lowest version in the list that satisfies the range, or `null` if none of them do. * `minVersion(range)`: Return the lowest version that can possibly match the given range. * `gtr(version, range)`: Return `true` if version is greater than all the versions possible in the range. * `ltr(version, range)`: Return `true` if version is less than all the versions possible in the range. * `outside(version, range, hilo)`: Return true if the version is outside the bounds of the range in either the high or low direction. The `hilo` argument must be either the string `'>'` or `'<'`. (This is the function called by `gtr` and `ltr`.) * `intersects(range)`: Return true if any of the ranges comparators intersect Note that, since ranges may be non-contiguous, a version might not be greater than a range, less than a range, *or* satisfy a range! For example, the range `1.2 <1.2.9 || >2.0.0` would have a hole from `1.2.9` until `2.0.0`, so the version `1.2.10` would not be greater than the range (because `2.0.1` satisfies, which is higher), nor less than the range (since `1.2.8` satisfies, which is lower), and it also does not satisfy the range. If you want to know if a version satisfies or does not satisfy a range, use the `satisfies(version, range)` function. ### Coercion * `coerce(version, options)`: Coerces a string to semver if possible This aims to provide a very forgiving translation of a non-semver string to semver. It looks for the first digit in a string, and consumes all remaining characters which satisfy at least a partial semver (e.g., `1`, `1.2`, `1.2.3`) up to the max permitted length (256 characters). Longer versions are simply truncated (`4.6.3.9.2-alpha2` becomes `4.6.3`). All surrounding text is simply ignored (`v3.4 replaces v3.3.1` becomes `3.4.0`). Only text which lacks digits will fail coercion (`version one` is not valid). The maximum length for any semver component considered for coercion is 16 characters; longer components will be ignored (`10000000000000000.4.7.4` becomes `4.7.4`). The maximum value for any semver component is `Integer.MAX_SAFE_INTEGER || (2**53 - 1)`; higher value components are invalid (`9999999999999999.4.7.4` is likely invalid). If the `options.rtl` flag is set, then `coerce` will return the right-most coercible tuple that does not share an ending index with a longer coercible tuple. For example, `1.2.3.4` will return `2.3.4` in rtl mode, not `4.0.0`. `1.2.3/4` will return `4.0.0`, because the `4` is not a part of any other overlapping SemVer tuple. ### Clean * `clean(version)`: Clean a string to be a valid semver if possible This will return a cleaned and trimmed semver version. If the provided version is not valid a null will be returned. This does not work for ranges. ex. * `s.clean(' = v 2.1.5foo')`: `null` * `s.clean(' = v 2.1.5foo', { loose: true })`: `'2.1.5-foo'` * `s.clean(' = v 2.1.5-foo')`: `null` * `s.clean(' = v 2.1.5-foo', { loose: true })`: `'2.1.5-foo'` * `s.clean('=v2.1.5')`: `'2.1.5'` * `s.clean(' =v2.1.5')`: `2.1.5` * `s.clean(' 2.1.5 ')`: `'2.1.5'` * `s.clean('~1.0.0')`: `null` # AssemblyScript Loader A convenient loader for [AssemblyScript](https://assemblyscript.org) modules. Demangles module exports to a friendly object structure compatible with TypeScript definitions and provides useful utility to read/write data from/to memory. [Documentation](https://assemblyscript.org/loader.html) # core-util-is The `util.is*` functions introduced in Node v0.12. # u3 - Utility Functions This lib contains utility functions for e3, dataflower and other projects. ## Documentation ### Installation ```bash npm install u3 ``` ```bash bower install u3 ``` #### Usage In this documentation I used the lib as follows: ```js var u3 = require("u3"), cache = u3.cache, eachCombination = u3.eachCombination; ``` ### Function wrappers #### cache The `cache(fn)` function caches the fn results, so by the next calls it will return the result of the first call. You can use different arguments, but they won't affect the return value. ```js var a = cache(function fn(x, y, z){ return x + y + z; }); console.log(a(1, 2, 3)); // 6 console.log(a()); // 6 console.log(a()); // 6 ``` It is possible to cache a value too. ```js var a = cache(1 + 2 + 3); console.log(a()); // 6 console.log(a()); // 6 console.log(a()); // 6 ``` ### Math #### eachCombination The `eachCombination(alternativesByDimension, callback)` calls the `callback(a,b,c,...)` on each combination of the `alternatives[a[],b[],c[],...]`. ```js eachCombination([ [1, 2, 3], ["a", "b"] ], console.log); /* 1, "a" 1, "b" 2, "a" 2, "b" 3, "a" 3, "b" */ ``` You can use any dimension and number of alternatives. In the current example we used 2 dimensions. By the first dimension we used 3 alternatives: `[1, 2, 3]` and by the second dimension we used 2 alternatives: `["a", "b"]`. ## License MIT - 2016 Jánszky László Lajos # whatwg-url whatwg-url is a full implementation of the WHATWG [URL Standard](https://url.spec.whatwg.org/). It can be used standalone, but it also exposes a lot of the internal algorithms that are useful for integrating a URL parser into a project like [jsdom](https://github.com/tmpvar/jsdom). ## Specification conformance whatwg-url is currently up to date with the URL spec up to commit [7ae1c69](https://github.com/whatwg/url/commit/7ae1c691c96f0d82fafa24c33aa1e8df9ffbf2bc). For `file:` URLs, whose [origin is left unspecified](https://url.spec.whatwg.org/#concept-url-origin), whatwg-url chooses to use a new opaque origin (which serializes to `"null"`). ## API ### The `URL` and `URLSearchParams` classes The main API is provided by the [`URL`](https://url.spec.whatwg.org/#url-class) and [`URLSearchParams`](https://url.spec.whatwg.org/#interface-urlsearchparams) exports, which follows the spec's behavior in all ways (including e.g. `USVString` conversion). Most consumers of this library will want to use these. ### Low-level URL Standard API The following methods are exported for use by places like jsdom that need to implement things like [`HTMLHyperlinkElementUtils`](https://html.spec.whatwg.org/#htmlhyperlinkelementutils). They mostly operate on or return an "internal URL" or ["URL record"](https://url.spec.whatwg.org/#concept-url) type. - [URL parser](https://url.spec.whatwg.org/#concept-url-parser): `parseURL(input, { baseURL, encodingOverride })` - [Basic URL parser](https://url.spec.whatwg.org/#concept-basic-url-parser): `basicURLParse(input, { baseURL, encodingOverride, url, stateOverride })` - [URL serializer](https://url.spec.whatwg.org/#concept-url-serializer): `serializeURL(urlRecord, excludeFragment)` - [Host serializer](https://url.spec.whatwg.org/#concept-host-serializer): `serializeHost(hostFromURLRecord)` - [Serialize an integer](https://url.spec.whatwg.org/#serialize-an-integer): `serializeInteger(number)` - [Origin](https://url.spec.whatwg.org/#concept-url-origin) [serializer](https://html.spec.whatwg.org/multipage/origin.html#ascii-serialisation-of-an-origin): `serializeURLOrigin(urlRecord)` - [Set the username](https://url.spec.whatwg.org/#set-the-username): `setTheUsername(urlRecord, usernameString)` - [Set the password](https://url.spec.whatwg.org/#set-the-password): `setThePassword(urlRecord, passwordString)` - [Cannot have a username/password/port](https://url.spec.whatwg.org/#cannot-have-a-username-password-port): `cannotHaveAUsernamePasswordPort(urlRecord)` - [Percent decode](https://url.spec.whatwg.org/#percent-decode): `percentDecode(buffer)` The `stateOverride` parameter is one of the following strings: - [`"scheme start"`](https://url.spec.whatwg.org/#scheme-start-state) - [`"scheme"`](https://url.spec.whatwg.org/#scheme-state) - [`"no scheme"`](https://url.spec.whatwg.org/#no-scheme-state) - [`"special relative or authority"`](https://url.spec.whatwg.org/#special-relative-or-authority-state) - [`"path or authority"`](https://url.spec.whatwg.org/#path-or-authority-state) - [`"relative"`](https://url.spec.whatwg.org/#relative-state) - [`"relative slash"`](https://url.spec.whatwg.org/#relative-slash-state) - [`"special authority slashes"`](https://url.spec.whatwg.org/#special-authority-slashes-state) - [`"special authority ignore slashes"`](https://url.spec.whatwg.org/#special-authority-ignore-slashes-state) - [`"authority"`](https://url.spec.whatwg.org/#authority-state) - [`"host"`](https://url.spec.whatwg.org/#host-state) - [`"hostname"`](https://url.spec.whatwg.org/#hostname-state) - [`"port"`](https://url.spec.whatwg.org/#port-state) - [`"file"`](https://url.spec.whatwg.org/#file-state) - [`"file slash"`](https://url.spec.whatwg.org/#file-slash-state) - [`"file host"`](https://url.spec.whatwg.org/#file-host-state) - [`"path start"`](https://url.spec.whatwg.org/#path-start-state) - [`"path"`](https://url.spec.whatwg.org/#path-state) - [`"cannot-be-a-base-URL path"`](https://url.spec.whatwg.org/#cannot-be-a-base-url-path-state) - [`"query"`](https://url.spec.whatwg.org/#query-state) - [`"fragment"`](https://url.spec.whatwg.org/#fragment-state) The URL record type has the following API: - [`scheme`](https://url.spec.whatwg.org/#concept-url-scheme) - [`username`](https://url.spec.whatwg.org/#concept-url-username) - [`password`](https://url.spec.whatwg.org/#concept-url-password) - [`host`](https://url.spec.whatwg.org/#concept-url-host) - [`port`](https://url.spec.whatwg.org/#concept-url-port) - [`path`](https://url.spec.whatwg.org/#concept-url-path) (as an array) - [`query`](https://url.spec.whatwg.org/#concept-url-query) - [`fragment`](https://url.spec.whatwg.org/#concept-url-fragment) - [`cannotBeABaseURL`](https://url.spec.whatwg.org/#url-cannot-be-a-base-url-flag) (as a boolean) These properties should be treated with care, as in general changing them will cause the URL record to be in an inconsistent state until the appropriate invocation of `basicURLParse` is used to fix it up. You can see examples of this in the URL Standard, where there are many step sequences like "4. Set context object’s url’s fragment to the empty string. 5. Basic URL parse _input_ with context object’s url as _url_ and fragment state as _state override_." In between those two steps, a URL record is in an unusable state. The return value of "failure" in the spec is represented by `null`. That is, functions like `parseURL` and `basicURLParse` can return _either_ a URL record _or_ `null`. ## Development instructions First, install [Node.js](https://nodejs.org/). Then, fetch the dependencies of whatwg-url, by running from this directory: npm install To run tests: npm test To generate a coverage report: npm run coverage To build and run the live viewer: npm run build npm run build-live-viewer Serve the contents of the `live-viewer` directory using any web server. ## Supporting whatwg-url The jsdom project (including whatwg-url) is a community-driven project maintained by a team of [volunteers](https://github.com/orgs/jsdom/people). You could support us by: - [Getting professional support for whatwg-url](https://tidelift.com/subscription/pkg/npm-whatwg-url?utm_source=npm-whatwg-url&utm_medium=referral&utm_campaign=readme) as part of a Tidelift subscription. Tidelift helps making open source sustainable for us while giving teams assurances for maintenance, licensing, and security. - Contributing directly to the project. # debug [](https://travis-ci.org/visionmedia/debug) [](https://coveralls.io/github/visionmedia/debug?branch=master) [](https://visionmedia-community-slackin.now.sh/) [](#backers) [](#sponsors) <img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png"> A tiny JavaScript debugging utility modelled after Node.js core's debugging technique. Works in Node.js and web browsers. ## Installation ```bash $ npm install debug ``` ## Usage `debug` exposes a function; simply pass this function the name of your module, and it will return a decorated version of `console.error` for you to pass debug statements to. This will allow you to toggle the debug output for different parts of your module as well as the module as a whole. Example [_app.js_](./examples/node/app.js): ```js var debug = require('debug')('http') , http = require('http') , name = 'My App'; // fake app debug('booting %o', name); http.createServer(function(req, res){ debug(req.method + ' ' + req.url); res.end('hello\n'); }).listen(3000, function(){ debug('listening'); }); // fake worker of some kind require('./worker'); ``` Example [_worker.js_](./examples/node/worker.js): ```js var a = require('debug')('worker:a') , b = require('debug')('worker:b'); function work() { a('doing lots of uninteresting work'); setTimeout(work, Math.random() * 1000); } work(); function workb() { b('doing some work'); setTimeout(workb, Math.random() * 2000); } workb(); ``` The `DEBUG` environment variable is then used to enable these based on space or comma-delimited names. Here are some examples: <img width="647" alt="screen shot 2017-08-08 at 12 53 04 pm" src="https://user-images.githubusercontent.com/71256/29091703-a6302cdc-7c38-11e7-8304-7c0b3bc600cd.png"> <img width="647" alt="screen shot 2017-08-08 at 12 53 38 pm" src="https://user-images.githubusercontent.com/71256/29091700-a62a6888-7c38-11e7-800b-db911291ca2b.png"> <img width="647" alt="screen shot 2017-08-08 at 12 53 25 pm" src="https://user-images.githubusercontent.com/71256/29091701-a62ea114-7c38-11e7-826a-2692bedca740.png"> #### Windows command prompt notes ##### CMD On Windows the environment variable is set using the `set` command. ```cmd set DEBUG=*,-not_this ``` Example: ```cmd set DEBUG=* & node app.js ``` ##### PowerShell (VS Code default) PowerShell uses different syntax to set environment variables. ```cmd $env:DEBUG = "*,-not_this" ``` Example: ```cmd $env:DEBUG='app';node app.js ``` Then, run the program to be debugged as usual. npm script example: ```js "windowsDebug": "@powershell -Command $env:DEBUG='*';node app.js", ``` ## Namespace Colors Every debug instance has a color generated for it based on its namespace name. This helps when visually parsing the debug output to identify which debug instance a debug line belongs to. #### Node.js In Node.js, colors are enabled when stderr is a TTY. You also _should_ install the [`supports-color`](https://npmjs.org/supports-color) module alongside debug, otherwise debug will only use a small handful of basic colors. <img width="521" src="https://user-images.githubusercontent.com/71256/29092181-47f6a9e6-7c3a-11e7-9a14-1928d8a711cd.png"> #### Web Browser Colors are also enabled on "Web Inspectors" that understand the `%c` formatting option. These are WebKit web inspectors, Firefox ([since version 31](https://hacks.mozilla.org/2014/05/editable-box-model-multiple-selection-sublime-text-keys-much-more-firefox-developer-tools-episode-31/)) and the Firebug plugin for Firefox (any version). <img width="524" src="https://user-images.githubusercontent.com/71256/29092033-b65f9f2e-7c39-11e7-8e32-f6f0d8e865c1.png"> ## Millisecond diff When actively developing an application it can be useful to see when the time spent between one `debug()` call and the next. Suppose for example you invoke `debug()` before requesting a resource, and after as well, the "+NNNms" will show you how much time was spent between calls. <img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png"> When stdout is not a TTY, `Date#toISOString()` is used, making it more useful for logging the debug information as shown below: <img width="647" src="https://user-images.githubusercontent.com/71256/29091956-6bd78372-7c39-11e7-8c55-c948396d6edd.png"> ## Conventions If you're using this in one or more of your libraries, you _should_ use the name of your library so that developers may toggle debugging as desired without guessing names. If you have more than one debuggers you _should_ prefix them with your library name and use ":" to separate features. For example "bodyParser" from Connect would then be "connect:bodyParser". If you append a "*" to the end of your name, it will always be enabled regardless of the setting of the DEBUG environment variable. You can then use it for normal output as well as debug output. ## Wildcards The `*` character may be used as a wildcard. Suppose for example your library has debuggers named "connect:bodyParser", "connect:compress", "connect:session", instead of listing all three with `DEBUG=connect:bodyParser,connect:compress,connect:session`, you may simply do `DEBUG=connect:*`, or to run everything using this module simply use `DEBUG=*`. You can also exclude specific debuggers by prefixing them with a "-" character. For example, `DEBUG=*,-connect:*` would include all debuggers except those starting with "connect:". ## Environment Variables When running through Node.js, you can set a few environment variables that will change the behavior of the debug logging: | Name | Purpose | |-----------|-------------------------------------------------| | `DEBUG` | Enables/disables specific debugging namespaces. | | `DEBUG_HIDE_DATE` | Hide date from debug output (non-TTY). | | `DEBUG_COLORS`| Whether or not to use colors in the debug output. | | `DEBUG_DEPTH` | Object inspection depth. | | `DEBUG_SHOW_HIDDEN` | Shows hidden properties on inspected objects. | __Note:__ The environment variables beginning with `DEBUG_` end up being converted into an Options object that gets used with `%o`/`%O` formatters. See the Node.js documentation for [`util.inspect()`](https://nodejs.org/api/util.html#util_util_inspect_object_options) for the complete list. ## Formatters Debug uses [printf-style](https://wikipedia.org/wiki/Printf_format_string) formatting. Below are the officially supported formatters: | Formatter | Representation | |-----------|----------------| | `%O` | Pretty-print an Object on multiple lines. | | `%o` | Pretty-print an Object all on a single line. | | `%s` | String. | | `%d` | Number (both integer and float). | | `%j` | JSON. Replaced with the string '[Circular]' if the argument contains circular references. | | `%%` | Single percent sign ('%'). This does not consume an argument. | ### Custom formatters You can add custom formatters by extending the `debug.formatters` object. For example, if you wanted to add support for rendering a Buffer as hex with `%h`, you could do something like: ```js const createDebug = require('debug') createDebug.formatters.h = (v) => { return v.toString('hex') } // …elsewhere const debug = createDebug('foo') debug('this is hex: %h', new Buffer('hello world')) // foo this is hex: 68656c6c6f20776f726c6421 +0ms ``` ## Browser Support You can build a browser-ready script using [browserify](https://github.com/substack/node-browserify), or just use the [browserify-as-a-service](https://wzrd.in/) [build](https://wzrd.in/standalone/debug@latest), if you don't want to build it yourself. Debug's enable state is currently persisted by `localStorage`. Consider the situation shown below where you have `worker:a` and `worker:b`, and wish to debug both. You can enable this using `localStorage.debug`: ```js localStorage.debug = 'worker:*' ``` And then refresh the page. ```js a = debug('worker:a'); b = debug('worker:b'); setInterval(function(){ a('doing some work'); }, 1000); setInterval(function(){ b('doing some work'); }, 1200); ``` ## Output streams By default `debug` will log to stderr, however this can be configured per-namespace by overriding the `log` method: Example [_stdout.js_](./examples/node/stdout.js): ```js var debug = require('debug'); var error = debug('app:error'); // by default stderr is used error('goes to stderr!'); var log = debug('app:log'); // set this namespace to log via console.log log.log = console.log.bind(console); // don't forget to bind to console! log('goes to stdout'); error('still goes to stderr!'); // set all output to go via console.info // overrides all per-namespace log settings debug.log = console.info.bind(console); error('now goes to stdout via console.info'); log('still goes to stdout, but via console.info now'); ``` ## Extend You can simply extend debugger ```js const log = require('debug')('auth'); //creates new debug instance with extended namespace const logSign = log.extend('sign'); const logLogin = log.extend('login'); log('hello'); // auth hello logSign('hello'); //auth:sign hello logLogin('hello'); //auth:login hello ``` ## Set dynamically You can also enable debug dynamically by calling the `enable()` method : ```js let debug = require('debug'); console.log(1, debug.enabled('test')); debug.enable('test'); console.log(2, debug.enabled('test')); debug.disable(); console.log(3, debug.enabled('test')); ``` print : ``` 1 false 2 true 3 false ``` Usage : `enable(namespaces)` `namespaces` can include modes separated by a colon and wildcards. Note that calling `enable()` completely overrides previously set DEBUG variable : ``` $ DEBUG=foo node -e 'var dbg = require("debug"); dbg.enable("bar"); console.log(dbg.enabled("foo"))' => false ``` `disable()` Will disable all namespaces. The functions returns the namespaces currently enabled (and skipped). This can be useful if you want to disable debugging temporarily without knowing what was enabled to begin with. For example: ```js let debug = require('debug'); debug.enable('foo:*,-foo:bar'); let namespaces = debug.disable(); debug.enable(namespaces); ``` Note: There is no guarantee that the string will be identical to the initial enable string, but semantically they will be identical. ## Checking whether a debug target is enabled After you've created a debug instance, you can determine whether or not it is enabled by checking the `enabled` property: ```javascript const debug = require('debug')('http'); if (debug.enabled) { // do stuff... } ``` You can also manually toggle this property to force the debug instance to be enabled or disabled. ## Authors - TJ Holowaychuk - Nathan Rajlich - Andrew Rhyne ## Backers Support us with a monthly donation and help us continue our activities. 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Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # binary-install Install .tar.gz binary applications via npm ## Usage This library provides a single class `Binary` that takes a download url and some optional arguments. You **must** provide either `name` or `installDirectory` when creating your `Binary`. | option | decription | | ---------------- | --------------------------------------------- | | name | The name of your binary | | installDirectory | A path to the directory to install the binary | If an `installDirectory` is not provided, the binary will be installed at your OS specific config directory. On MacOS it defaults to `~/Library/Preferences/${name}-nodejs` After your `Binary` has been created, you can run `.install()` to install the binary, and `.run()` to run it. ### Example This is meant to be used as a library - create your `Binary` with your desired options, then call `.install()` in the `postinstall` of your `package.json`, `.run()` in the `bin` section of your `package.json`, and `.uninstall()` in the `preuninstall` section of your `package.json`. See [this example project](/example) to see how to create an npm package that installs and runs a binary using the Github releases API. # bl *(BufferList)* [](https://travis-ci.com/rvagg/bl/) **A Node.js Buffer list collector, reader and streamer thingy.** [](https://nodei.co/npm/bl/) **bl** is a storage object for collections of Node Buffers, exposing them with the main Buffer readable API. Also works as a duplex stream so you can collect buffers from a stream that emits them and emit buffers to a stream that consumes them! The original buffers are kept intact and copies are only done as necessary. Any reads that require the use of a single original buffer will return a slice of that buffer only (which references the same memory as the original buffer). Reads that span buffers perform concatenation as required and return the results transparently. ```js const { BufferList } = require('bl') const bl = new BufferList() bl.append(Buffer.from('abcd')) bl.append(Buffer.from('efg')) bl.append('hi') // bl will also accept & convert Strings bl.append(Buffer.from('j')) bl.append(Buffer.from([ 0x3, 0x4 ])) console.log(bl.length) // 12 console.log(bl.slice(0, 10).toString('ascii')) // 'abcdefghij' console.log(bl.slice(3, 10).toString('ascii')) // 'defghij' console.log(bl.slice(3, 6).toString('ascii')) // 'def' console.log(bl.slice(3, 8).toString('ascii')) // 'defgh' console.log(bl.slice(5, 10).toString('ascii')) // 'fghij' console.log(bl.indexOf('def')) // 3 console.log(bl.indexOf('asdf')) // -1 // or just use toString! console.log(bl.toString()) // 'abcdefghij\u0003\u0004' console.log(bl.toString('ascii', 3, 8)) // 'defgh' console.log(bl.toString('ascii', 5, 10)) // 'fghij' // other standard Buffer readables console.log(bl.readUInt16BE(10)) // 0x0304 console.log(bl.readUInt16LE(10)) // 0x0403 ``` Give it a callback in the constructor and use it just like **[concat-stream](https://github.com/maxogden/node-concat-stream)**: ```js const { BufferListStream } = require('bl') const fs = require('fs') fs.createReadStream('README.md') .pipe(BufferListStream((err, data) => { // note 'new' isn't strictly required // `data` is a complete Buffer object containing the full data console.log(data.toString()) })) ``` Note that when you use the *callback* method like this, the resulting `data` parameter is a concatenation of all `Buffer` objects in the list. If you want to avoid the overhead of this concatenation (in cases of extreme performance consciousness), then avoid the *callback* method and just listen to `'end'` instead, like a standard Stream. Or to fetch a URL using [hyperquest](https://github.com/substack/hyperquest) (should work with [request](http://github.com/mikeal/request) and even plain Node http too!): ```js const hyperquest = require('hyperquest') const { BufferListStream } = require('bl') const url = 'https://raw.github.com/rvagg/bl/master/README.md' hyperquest(url).pipe(BufferListStream((err, data) => { console.log(data.toString()) })) ``` Or, use it as a readable stream to recompose a list of Buffers to an output source: ```js const { BufferListStream } = require('bl') const fs = require('fs') var bl = new BufferListStream() bl.append(Buffer.from('abcd')) bl.append(Buffer.from('efg')) bl.append(Buffer.from('hi')) bl.append(Buffer.from('j')) bl.pipe(fs.createWriteStream('gibberish.txt')) ``` ## API * <a href="#ctor"><code><b>new BufferList([ buf ])</b></code></a> * <a href="#isBufferList"><code><b>BufferList.isBufferList(obj)</b></code></a> * <a href="#length"><code>bl.<b>length</b></code></a> * <a href="#append"><code>bl.<b>append(buffer)</b></code></a> * <a href="#get"><code>bl.<b>get(index)</b></code></a> * <a href="#indexOf"><code>bl.<b>indexOf(value[, byteOffset][, encoding])</b></code></a> * <a href="#slice"><code>bl.<b>slice([ start[, end ] ])</b></code></a> * <a href="#shallowSlice"><code>bl.<b>shallowSlice([ start[, end ] ])</b></code></a> * <a href="#copy"><code>bl.<b>copy(dest, [ destStart, [ srcStart [, srcEnd ] ] ])</b></code></a> * <a href="#duplicate"><code>bl.<b>duplicate()</b></code></a> * <a href="#consume"><code>bl.<b>consume(bytes)</b></code></a> * <a href="#toString"><code>bl.<b>toString([encoding, [ start, [ end ]]])</b></code></a> * <a href="#readXX"><code>bl.<b>readDoubleBE()</b></code>, <code>bl.<b>readDoubleLE()</b></code>, <code>bl.<b>readFloatBE()</b></code>, <code>bl.<b>readFloatLE()</b></code>, <code>bl.<b>readInt32BE()</b></code>, <code>bl.<b>readInt32LE()</b></code>, <code>bl.<b>readUInt32BE()</b></code>, <code>bl.<b>readUInt32LE()</b></code>, <code>bl.<b>readInt16BE()</b></code>, <code>bl.<b>readInt16LE()</b></code>, <code>bl.<b>readUInt16BE()</b></code>, <code>bl.<b>readUInt16LE()</b></code>, <code>bl.<b>readInt8()</b></code>, <code>bl.<b>readUInt8()</b></code></a> * <a href="#ctorStream"><code><b>new BufferListStream([ callback ])</b></code></a> -------------------------------------------------------- <a name="ctor"></a> ### new BufferList([ Buffer | Buffer array | BufferList | BufferList array | String ]) No arguments are _required_ for the constructor, but you can initialise the list by passing in a single `Buffer` object or an array of `Buffer` objects. `new` is not strictly required, if you don't instantiate a new object, it will be done automatically for you so you can create a new instance simply with: ```js const { BufferList } = require('bl') const bl = BufferList() // equivalent to: const { BufferList } = require('bl') const bl = new BufferList() ``` -------------------------------------------------------- <a name="isBufferList"></a> ### BufferList.isBufferList(obj) Determines if the passed object is a `BufferList`. It will return `true` if the passed object is an instance of `BufferList` **or** `BufferListStream` and `false` otherwise. N.B. this won't return `true` for `BufferList` or `BufferListStream` instances created by versions of this library before this static method was added. -------------------------------------------------------- <a name="length"></a> ### bl.length Get the length of the list in bytes. This is the sum of the lengths of all of the buffers contained in the list, minus any initial offset for a semi-consumed buffer at the beginning. Should accurately represent the total number of bytes that can be read from the list. -------------------------------------------------------- <a name="append"></a> ### bl.append(Buffer | Buffer array | BufferList | BufferList array | String) `append(buffer)` adds an additional buffer or BufferList to the internal list. `this` is returned so it can be chained. -------------------------------------------------------- <a name="get"></a> ### bl.get(index) `get()` will return the byte at the specified index. -------------------------------------------------------- <a name="indexOf"></a> ### bl.indexOf(value[, byteOffset][, encoding]) `get()` will return the byte at the specified index. `indexOf()` method returns the first index at which a given element can be found in the BufferList, or -1 if it is not present. -------------------------------------------------------- <a name="slice"></a> ### bl.slice([ start, [ end ] ]) `slice()` returns a new `Buffer` object containing the bytes within the range specified. Both `start` and `end` are optional and will default to the beginning and end of the list respectively. If the requested range spans a single internal buffer then a slice of that buffer will be returned which shares the original memory range of that Buffer. If the range spans multiple buffers then copy operations will likely occur to give you a uniform Buffer. -------------------------------------------------------- <a name="shallowSlice"></a> ### bl.shallowSlice([ start, [ end ] ]) `shallowSlice()` returns a new `BufferList` object containing the bytes within the range specified. Both `start` and `end` are optional and will default to the beginning and end of the list respectively. No copies will be performed. All buffers in the result share memory with the original list. -------------------------------------------------------- <a name="copy"></a> ### bl.copy(dest, [ destStart, [ srcStart [, srcEnd ] ] ]) `copy()` copies the content of the list in the `dest` buffer, starting from `destStart` and containing the bytes within the range specified with `srcStart` to `srcEnd`. `destStart`, `start` and `end` are optional and will default to the beginning of the `dest` buffer, and the beginning and end of the list respectively. -------------------------------------------------------- <a name="duplicate"></a> ### bl.duplicate() `duplicate()` performs a **shallow-copy** of the list. The internal Buffers remains the same, so if you change the underlying Buffers, the change will be reflected in both the original and the duplicate. This method is needed if you want to call `consume()` or `pipe()` and still keep the original list.Example: ```js var bl = new BufferListStream() bl.append('hello') bl.append(' world') bl.append('\n') bl.duplicate().pipe(process.stdout, { end: false }) console.log(bl.toString()) ``` -------------------------------------------------------- <a name="consume"></a> ### bl.consume(bytes) `consume()` will shift bytes *off the start of the list*. The number of bytes consumed don't need to line up with the sizes of the internal Buffers&mdash;initial offsets will be calculated accordingly in order to give you a consistent view of the data. -------------------------------------------------------- <a name="toString"></a> ### bl.toString([encoding, [ start, [ end ]]]) `toString()` will return a string representation of the buffer. The optional `start` and `end` arguments are passed on to `slice()`, while the `encoding` is passed on to `toString()` of the resulting Buffer. See the [Buffer#toString()](http://nodejs.org/docs/latest/api/buffer.html#buffer_buf_tostring_encoding_start_end) documentation for more information. -------------------------------------------------------- <a name="readXX"></a> ### bl.readDoubleBE(), bl.readDoubleLE(), bl.readFloatBE(), bl.readFloatLE(), bl.readInt32BE(), bl.readInt32LE(), bl.readUInt32BE(), bl.readUInt32LE(), bl.readInt16BE(), bl.readInt16LE(), bl.readUInt16BE(), bl.readUInt16LE(), bl.readInt8(), bl.readUInt8() All of the standard byte-reading methods of the `Buffer` interface are implemented and will operate across internal Buffer boundaries transparently. See the <b><code>[Buffer](http://nodejs.org/docs/latest/api/buffer.html)</code></b> documentation for how these work. -------------------------------------------------------- <a name="ctorStream"></a> ### new BufferListStream([ callback | Buffer | Buffer array | BufferList | BufferList array | String ]) **BufferListStream** is a Node **[Duplex Stream](http://nodejs.org/docs/latest/api/stream.html#stream_class_stream_duplex)**, so it can be read from and written to like a standard Node stream. You can also `pipe()` to and from a **BufferListStream** instance. The constructor takes an optional callback, if supplied, the callback will be called with an error argument followed by a reference to the **bl** instance, when `bl.end()` is called (i.e. from a piped stream). This is a convenient method of collecting the entire contents of a stream, particularly when the stream is *chunky*, such as a network stream. Normally, no arguments are required for the constructor, but you can initialise the list by passing in a single `Buffer` object or an array of `Buffer` object. `new` is not strictly required, if you don't instantiate a new object, it will be done automatically for you so you can create a new instance simply with: ```js const { BufferListStream } = require('bl') const bl = BufferListStream() // equivalent to: const { BufferListStream } = require('bl') const bl = new BufferListStream() ``` N.B. For backwards compatibility reasons, `BufferListStream` is the **default** export when you `require('bl')`: ```js const { BufferListStream } = require('bl') // equivalent to: const BufferListStream = require('bl') ``` -------------------------------------------------------- ## Contributors **bl** is brought to you by the following hackers: * [Rod Vagg](https://github.com/rvagg) * [Matteo Collina](https://github.com/mcollina) * [Jarett Cruger](https://github.com/jcrugzz) <a name="license"></a> ## License &amp; copyright Copyright (c) 2013-2019 bl contributors (listed above). bl is licensed under the MIT license. All rights not explicitly granted in the MIT license are reserved. See the included LICENSE.md file for more details. # http-errors [![NPM Version][npm-version-image]][npm-url] [![NPM Downloads][npm-downloads-image]][node-url] [![Node.js Version][node-image]][node-url] [![Build Status][ci-image]][ci-url] [![Test Coverage][coveralls-image]][coveralls-url] Create HTTP errors for Express, Koa, Connect, etc. with ease. ## Install This is a [Node.js](https://nodejs.org/en/) module available through the [npm registry](https://www.npmjs.com/). Installation is done using the [`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally): ```bash $ npm install http-errors ``` ## Example ```js var createError = require('http-errors') var express = require('express') var app = express() app.use(function (req, res, next) { if (!req.user) return next(createError(401, 'Please login to view this page.')) next() }) ``` ## API This is the current API, currently extracted from Koa and subject to change. ### Error Properties - `expose` - can be used to signal if `message` should be sent to the client, defaulting to `false` when `status` >= 500 - `headers` - can be an object of header names to values to be sent to the client, defaulting to `undefined`. When defined, the key names should all be lower-cased - `message` - the traditional error message, which should be kept short and all single line - `status` - the status code of the error, mirroring `statusCode` for general compatibility - `statusCode` - the status code of the error, defaulting to `500` ### createError([status], [message], [properties]) Create a new error object with the given message `msg`. The error object inherits from `createError.HttpError`. ```js var err = createError(404, 'This video does not exist!') ``` - `status: 500` - the status code as a number - `message` - the message of the error, defaulting to node's text for that status code. - `properties` - custom properties to attach to the object ### createError([status], [error], [properties]) Extend the given `error` object with `createError.HttpError` properties. This will not alter the inheritance of the given `error` object, and the modified `error` object is the return value. <!-- eslint-disable no-redeclare --> ```js fs.readFile('foo.txt', function (err, buf) { if (err) { if (err.code === 'ENOENT') { var httpError = createError(404, err, { expose: false }) } else { var httpError = createError(500, err) } } }) ``` - `status` - the status code as a number - `error` - the error object to extend - `properties` - custom properties to attach to the object ### createError.isHttpError(val) Determine if the provided `val` is an `HttpError`. This will return `true` if the error inherits from the `HttpError` constructor of this module or matches the "duck type" for an error this module creates. All outputs from the `createError` factory will return `true` for this function, including if an non-`HttpError` was passed into the factory. ### new createError\[code || name\](\[msg]\)) Create a new error object with the given message `msg`. The error object inherits from `createError.HttpError`. ```js var err = new createError.NotFound() ``` - `code` - the status code as a number - `name` - the name of the error as a "bumpy case", i.e. `NotFound` or `InternalServerError`. #### List of all constructors |Status Code|Constructor Name | |-----------|-----------------------------| |400 |BadRequest | |401 |Unauthorized | |402 |PaymentRequired | |403 |Forbidden | |404 |NotFound | |405 |MethodNotAllowed | |406 |NotAcceptable | |407 |ProxyAuthenticationRequired | |408 |RequestTimeout | |409 |Conflict | |410 |Gone | |411 |LengthRequired | |412 |PreconditionFailed | |413 |PayloadTooLarge | |414 |URITooLong | |415 |UnsupportedMediaType | |416 |RangeNotSatisfiable | |417 |ExpectationFailed | |418 |ImATeapot | |421 |MisdirectedRequest | |422 |UnprocessableEntity | |423 |Locked | |424 |FailedDependency | |425 |UnorderedCollection | |426 |UpgradeRequired | |428 |PreconditionRequired | |429 |TooManyRequests | |431 |RequestHeaderFieldsTooLarge | |451 |UnavailableForLegalReasons | |500 |InternalServerError | |501 |NotImplemented | |502 |BadGateway | |503 |ServiceUnavailable | |504 |GatewayTimeout | |505 |HTTPVersionNotSupported | |506 |VariantAlsoNegotiates | |507 |InsufficientStorage | |508 |LoopDetected | |509 |BandwidthLimitExceeded | |510 |NotExtended | |511 |NetworkAuthenticationRequired| ## License [MIT](LICENSE) [ci-image]: https://badgen.net/github/checks/jshttp/http-errors/master?label=ci [ci-url]: https://github.com/jshttp/http-errors/actions?query=workflow%3Aci [coveralls-image]: https://badgen.net/coveralls/c/github/jshttp/http-errors/master [coveralls-url]: https://coveralls.io/r/jshttp/http-errors?branch=master [node-image]: https://badgen.net/npm/node/http-errors [node-url]: https://nodejs.org/en/download [npm-downloads-image]: https://badgen.net/npm/dm/http-errors [npm-url]: https://npmjs.org/package/http-errors [npm-version-image]: https://badgen.net/npm/v/http-errors [travis-image]: https://badgen.net/travis/jshttp/http-errors/master [travis-url]: https://travis-ci.org/jshttp/http-errors # axios // core The modules found in `core/` should be modules that are specific to the domain logic of axios. These modules would most likely not make sense to be consumed outside of the axios module, as their logic is too specific. Some examples of core modules are: - Dispatching requests - Managing interceptors - Handling config semver(1) -- The semantic versioner for npm =========================================== ## Install ```bash npm install semver ```` ## Usage As a node module: ```js const semver = require('semver') semver.valid('1.2.3') // '1.2.3' semver.valid('a.b.c') // null semver.clean(' =v1.2.3 ') // '1.2.3' semver.satisfies('1.2.3', '1.x || >=2.5.0 || 5.0.0 - 7.2.3') // true semver.gt('1.2.3', '9.8.7') // false semver.lt('1.2.3', '9.8.7') // true semver.minVersion('>=1.0.0') // '1.0.0' semver.valid(semver.coerce('v2')) // '2.0.0' semver.valid(semver.coerce('42.6.7.9.3-alpha')) // '42.6.7' ``` As a command-line utility: ``` $ semver -h A JavaScript implementation of the https://semver.org/ specification Copyright Isaac Z. Schlueter Usage: semver [options] <version> [<version> [...]] Prints valid versions sorted by SemVer precedence Options: -r --range <range> Print versions that match the specified range. -i --increment [<level>] Increment a version by the specified level. Level can be one of: major, minor, patch, premajor, preminor, prepatch, or prerelease. Default level is 'patch'. Only one version may be specified. --preid <identifier> Identifier to be used to prefix premajor, preminor, prepatch or prerelease version increments. -l --loose Interpret versions and ranges loosely -p --include-prerelease Always include prerelease versions in range matching -c --coerce Coerce a string into SemVer if possible (does not imply --loose) --rtl Coerce version strings right to left --ltr Coerce version strings left to right (default) Program exits successfully if any valid version satisfies all supplied ranges, and prints all satisfying versions. If no satisfying versions are found, then exits failure. Versions are printed in ascending order, so supplying multiple versions to the utility will just sort them. ``` ## Versions A "version" is described by the `v2.0.0` specification found at <https://semver.org/>. A leading `"="` or `"v"` character is stripped off and ignored. ## Ranges A `version range` is a set of `comparators` which specify versions that satisfy the range. A `comparator` is composed of an `operator` and a `version`. The set of primitive `operators` is: * `<` Less than * `<=` Less than or equal to * `>` Greater than * `>=` Greater than or equal to * `=` Equal. If no operator is specified, then equality is assumed, so this operator is optional, but MAY be included. For example, the comparator `>=1.2.7` would match the versions `1.2.7`, `1.2.8`, `2.5.3`, and `1.3.9`, but not the versions `1.2.6` or `1.1.0`. Comparators can be joined by whitespace to form a `comparator set`, which is satisfied by the **intersection** of all of the comparators it includes. A range is composed of one or more comparator sets, joined by `||`. A version matches a range if and only if every comparator in at least one of the `||`-separated comparator sets is satisfied by the version. For example, the range `>=1.2.7 <1.3.0` would match the versions `1.2.7`, `1.2.8`, and `1.2.99`, but not the versions `1.2.6`, `1.3.0`, or `1.1.0`. The range `1.2.7 || >=1.2.9 <2.0.0` would match the versions `1.2.7`, `1.2.9`, and `1.4.6`, but not the versions `1.2.8` or `2.0.0`. ### Prerelease Tags If a version has a prerelease tag (for example, `1.2.3-alpha.3`) then it will only be allowed to satisfy comparator sets if at least one comparator with the same `[major, minor, patch]` tuple also has a prerelease tag. For example, the range `>1.2.3-alpha.3` would be allowed to match the version `1.2.3-alpha.7`, but it would *not* be satisfied by `3.4.5-alpha.9`, even though `3.4.5-alpha.9` is technically "greater than" `1.2.3-alpha.3` according to the SemVer sort rules. The version range only accepts prerelease tags on the `1.2.3` version. The version `3.4.5` *would* satisfy the range, because it does not have a prerelease flag, and `3.4.5` is greater than `1.2.3-alpha.7`. The purpose for this behavior is twofold. First, prerelease versions frequently are updated very quickly, and contain many breaking changes that are (by the author's design) not yet fit for public consumption. Therefore, by default, they are excluded from range matching semantics. Second, a user who has opted into using a prerelease version has clearly indicated the intent to use *that specific* set of alpha/beta/rc versions. By including a prerelease tag in the range, the user is indicating that they are aware of the risk. However, it is still not appropriate to assume that they have opted into taking a similar risk on the *next* set of prerelease versions. Note that this behavior can be suppressed (treating all prerelease versions as if they were normal versions, for the purpose of range matching) by setting the `includePrerelease` flag on the options object to any [functions](https://github.com/npm/node-semver#functions) that do range matching. #### Prerelease Identifiers The method `.inc` takes an additional `identifier` string argument that will append the value of the string as a prerelease identifier: ```javascript semver.inc('1.2.3', 'prerelease', 'beta') // '1.2.4-beta.0' ``` command-line example: ```bash $ semver 1.2.3 -i prerelease --preid beta 1.2.4-beta.0 ``` Which then can be used to increment further: ```bash $ semver 1.2.4-beta.0 -i prerelease 1.2.4-beta.1 ``` ### Advanced Range Syntax Advanced range syntax desugars to primitive comparators in deterministic ways. Advanced ranges may be combined in the same way as primitive comparators using white space or `||`. #### Hyphen Ranges `X.Y.Z - A.B.C` Specifies an inclusive set. * `1.2.3 - 2.3.4` := `>=1.2.3 <=2.3.4` If a partial version is provided as the first version in the inclusive range, then the missing pieces are replaced with zeroes. * `1.2 - 2.3.4` := `>=1.2.0 <=2.3.4` If a partial version is provided as the second version in the inclusive range, then all versions that start with the supplied parts of the tuple are accepted, but nothing that would be greater than the provided tuple parts. * `1.2.3 - 2.3` := `>=1.2.3 <2.4.0` * `1.2.3 - 2` := `>=1.2.3 <3.0.0` #### X-Ranges `1.2.x` `1.X` `1.2.*` `*` Any of `X`, `x`, or `*` may be used to "stand in" for one of the numeric values in the `[major, minor, patch]` tuple. * `*` := `>=0.0.0` (Any version satisfies) * `1.x` := `>=1.0.0 <2.0.0` (Matching major version) * `1.2.x` := `>=1.2.0 <1.3.0` (Matching major and minor versions) A partial version range is treated as an X-Range, so the special character is in fact optional. * `""` (empty string) := `*` := `>=0.0.0` * `1` := `1.x.x` := `>=1.0.0 <2.0.0` * `1.2` := `1.2.x` := `>=1.2.0 <1.3.0` #### Tilde Ranges `~1.2.3` `~1.2` `~1` Allows patch-level changes if a minor version is specified on the comparator. Allows minor-level changes if not. * `~1.2.3` := `>=1.2.3 <1.(2+1).0` := `>=1.2.3 <1.3.0` * `~1.2` := `>=1.2.0 <1.(2+1).0` := `>=1.2.0 <1.3.0` (Same as `1.2.x`) * `~1` := `>=1.0.0 <(1+1).0.0` := `>=1.0.0 <2.0.0` (Same as `1.x`) * `~0.2.3` := `>=0.2.3 <0.(2+1).0` := `>=0.2.3 <0.3.0` * `~0.2` := `>=0.2.0 <0.(2+1).0` := `>=0.2.0 <0.3.0` (Same as `0.2.x`) * `~0` := `>=0.0.0 <(0+1).0.0` := `>=0.0.0 <1.0.0` (Same as `0.x`) * `~1.2.3-beta.2` := `>=1.2.3-beta.2 <1.3.0` Note that prereleases in the `1.2.3` version will be allowed, if they are greater than or equal to `beta.2`. So, `1.2.3-beta.4` would be allowed, but `1.2.4-beta.2` would not, because it is a prerelease of a different `[major, minor, patch]` tuple. #### Caret Ranges `^1.2.3` `^0.2.5` `^0.0.4` Allows changes that do not modify the left-most non-zero element in the `[major, minor, patch]` tuple. In other words, this allows patch and minor updates for versions `1.0.0` and above, patch updates for versions `0.X >=0.1.0`, and *no* updates for versions `0.0.X`. Many authors treat a `0.x` version as if the `x` were the major "breaking-change" indicator. Caret ranges are ideal when an author may make breaking changes between `0.2.4` and `0.3.0` releases, which is a common practice. However, it presumes that there will *not* be breaking changes between `0.2.4` and `0.2.5`. It allows for changes that are presumed to be additive (but non-breaking), according to commonly observed practices. * `^1.2.3` := `>=1.2.3 <2.0.0` * `^0.2.3` := `>=0.2.3 <0.3.0` * `^0.0.3` := `>=0.0.3 <0.0.4` * `^1.2.3-beta.2` := `>=1.2.3-beta.2 <2.0.0` Note that prereleases in the `1.2.3` version will be allowed, if they are greater than or equal to `beta.2`. So, `1.2.3-beta.4` would be allowed, but `1.2.4-beta.2` would not, because it is a prerelease of a different `[major, minor, patch]` tuple. * `^0.0.3-beta` := `>=0.0.3-beta <0.0.4` Note that prereleases in the `0.0.3` version *only* will be allowed, if they are greater than or equal to `beta`. So, `0.0.3-pr.2` would be allowed. When parsing caret ranges, a missing `patch` value desugars to the number `0`, but will allow flexibility within that value, even if the major and minor versions are both `0`. * `^1.2.x` := `>=1.2.0 <2.0.0` * `^0.0.x` := `>=0.0.0 <0.1.0` * `^0.0` := `>=0.0.0 <0.1.0` A missing `minor` and `patch` values will desugar to zero, but also allow flexibility within those values, even if the major version is zero. * `^1.x` := `>=1.0.0 <2.0.0` * `^0.x` := `>=0.0.0 <1.0.0` ### Range Grammar Putting all this together, here is a Backus-Naur grammar for ranges, for the benefit of parser authors: ```bnf range-set ::= range ( logical-or range ) * logical-or ::= ( ' ' ) * '||' ( ' ' ) * range ::= hyphen | simple ( ' ' simple ) * | '' hyphen ::= partial ' - ' partial simple ::= primitive | partial | tilde | caret primitive ::= ( '<' | '>' | '>=' | '<=' | '=' ) partial partial ::= xr ( '.' xr ( '.' xr qualifier ? )? )? xr ::= 'x' | 'X' | '*' | nr nr ::= '0' | ['1'-'9'] ( ['0'-'9'] ) * tilde ::= '~' partial caret ::= '^' partial qualifier ::= ( '-' pre )? ( '+' build )? pre ::= parts build ::= parts parts ::= part ( '.' part ) * part ::= nr | [-0-9A-Za-z]+ ``` ## Functions All methods and classes take a final `options` object argument. All options in this object are `false` by default. The options supported are: - `loose` Be more forgiving about not-quite-valid semver strings. (Any resulting output will always be 100% strict compliant, of course.) For backwards compatibility reasons, if the `options` argument is a boolean value instead of an object, it is interpreted to be the `loose` param. - `includePrerelease` Set to suppress the [default behavior](https://github.com/npm/node-semver#prerelease-tags) of excluding prerelease tagged versions from ranges unless they are explicitly opted into. Strict-mode Comparators and Ranges will be strict about the SemVer strings that they parse. * `valid(v)`: Return the parsed version, or null if it's not valid. * `inc(v, release)`: Return the version incremented by the release type (`major`, `premajor`, `minor`, `preminor`, `patch`, `prepatch`, or `prerelease`), or null if it's not valid * `premajor` in one call will bump the version up to the next major version and down to a prerelease of that major version. `preminor`, and `prepatch` work the same way. * If called from a non-prerelease version, the `prerelease` will work the same as `prepatch`. It increments the patch version, then makes a prerelease. If the input version is already a prerelease it simply increments it. * `prerelease(v)`: Returns an array of prerelease components, or null if none exist. Example: `prerelease('1.2.3-alpha.1') -> ['alpha', 1]` * `major(v)`: Return the major version number. * `minor(v)`: Return the minor version number. * `patch(v)`: Return the patch version number. * `intersects(r1, r2, loose)`: Return true if the two supplied ranges or comparators intersect. * `parse(v)`: Attempt to parse a string as a semantic version, returning either a `SemVer` object or `null`. ### Comparison * `gt(v1, v2)`: `v1 > v2` * `gte(v1, v2)`: `v1 >= v2` * `lt(v1, v2)`: `v1 < v2` * `lte(v1, v2)`: `v1 <= v2` * `eq(v1, v2)`: `v1 == v2` This is true if they're logically equivalent, even if they're not the exact same string. You already know how to compare strings. * `neq(v1, v2)`: `v1 != v2` The opposite of `eq`. * `cmp(v1, comparator, v2)`: Pass in a comparison string, and it'll call the corresponding function above. `"==="` and `"!=="` do simple string comparison, but are included for completeness. Throws if an invalid comparison string is provided. * `compare(v1, v2)`: Return `0` if `v1 == v2`, or `1` if `v1` is greater, or `-1` if `v2` is greater. Sorts in ascending order if passed to `Array.sort()`. * `rcompare(v1, v2)`: The reverse of compare. Sorts an array of versions in descending order when passed to `Array.sort()`. * `compareBuild(v1, v2)`: The same as `compare` but considers `build` when two versions are equal. Sorts in ascending order if passed to `Array.sort()`. `v2` is greater. Sorts in ascending order if passed to `Array.sort()`. * `diff(v1, v2)`: Returns difference between two versions by the release type (`major`, `premajor`, `minor`, `preminor`, `patch`, `prepatch`, or `prerelease`), or null if the versions are the same. ### Comparators * `intersects(comparator)`: Return true if the comparators intersect ### Ranges * `validRange(range)`: Return the valid range or null if it's not valid * `satisfies(version, range)`: Return true if the version satisfies the range. * `maxSatisfying(versions, range)`: Return the highest version in the list that satisfies the range, or `null` if none of them do. * `minSatisfying(versions, range)`: Return the lowest version in the list that satisfies the range, or `null` if none of them do. * `minVersion(range)`: Return the lowest version that can possibly match the given range. * `gtr(version, range)`: Return `true` if version is greater than all the versions possible in the range. * `ltr(version, range)`: Return `true` if version is less than all the versions possible in the range. * `outside(version, range, hilo)`: Return true if the version is outside the bounds of the range in either the high or low direction. The `hilo` argument must be either the string `'>'` or `'<'`. (This is the function called by `gtr` and `ltr`.) * `intersects(range)`: Return true if any of the ranges comparators intersect Note that, since ranges may be non-contiguous, a version might not be greater than a range, less than a range, *or* satisfy a range! For example, the range `1.2 <1.2.9 || >2.0.0` would have a hole from `1.2.9` until `2.0.0`, so the version `1.2.10` would not be greater than the range (because `2.0.1` satisfies, which is higher), nor less than the range (since `1.2.8` satisfies, which is lower), and it also does not satisfy the range. If you want to know if a version satisfies or does not satisfy a range, use the `satisfies(version, range)` function. ### Coercion * `coerce(version, options)`: Coerces a string to semver if possible This aims to provide a very forgiving translation of a non-semver string to semver. It looks for the first digit in a string, and consumes all remaining characters which satisfy at least a partial semver (e.g., `1`, `1.2`, `1.2.3`) up to the max permitted length (256 characters). Longer versions are simply truncated (`4.6.3.9.2-alpha2` becomes `4.6.3`). All surrounding text is simply ignored (`v3.4 replaces v3.3.1` becomes `3.4.0`). Only text which lacks digits will fail coercion (`version one` is not valid). The maximum length for any semver component considered for coercion is 16 characters; longer components will be ignored (`10000000000000000.4.7.4` becomes `4.7.4`). The maximum value for any semver component is `Integer.MAX_SAFE_INTEGER || (2**53 - 1)`; higher value components are invalid (`9999999999999999.4.7.4` is likely invalid). If the `options.rtl` flag is set, then `coerce` will return the right-most coercible tuple that does not share an ending index with a longer coercible tuple. For example, `1.2.3.4` will return `2.3.4` in rtl mode, not `4.0.0`. `1.2.3/4` will return `4.0.0`, because the `4` is not a part of any other overlapping SemVer tuple. ### Clean * `clean(version)`: Clean a string to be a valid semver if possible This will return a cleaned and trimmed semver version. If the provided version is not valid a null will be returned. This does not work for ranges. ex. * `s.clean(' = v 2.1.5foo')`: `null` * `s.clean(' = v 2.1.5foo', { loose: true })`: `'2.1.5-foo'` * `s.clean(' = v 2.1.5-foo')`: `null` * `s.clean(' = v 2.1.5-foo', { loose: true })`: `'2.1.5-foo'` * `s.clean('=v2.1.5')`: `'2.1.5'` * `s.clean(' =v2.1.5')`: `2.1.5` * `s.clean(' 2.1.5 ')`: `'2.1.5'` * `s.clean('~1.0.0')`: `null` assemblyscript-json # assemblyscript-json ## Table of contents ### Namespaces - [JSON](modules/json.md) ### Classes - [DecoderState](classes/decoderstate.md) - [JSONDecoder](classes/jsondecoder.md) - [JSONEncoder](classes/jsonencoder.md) - [JSONHandler](classes/jsonhandler.md) - [ThrowingJSONHandler](classes/throwingjsonhandler.md) # node-tar [](https://travis-ci.org/npm/node-tar) [Fast](./benchmarks) and full-featured Tar for Node.js The API is designed to mimic the behavior of `tar(1)` on unix systems. If you are familiar with how tar works, most of this will hopefully be straightforward for you. If not, then hopefully this module can teach you useful unix skills that may come in handy someday :) ## Background A "tar file" or "tarball" is an archive of file system entries (directories, files, links, etc.) The name comes from "tape archive". If you run `man tar` on almost any Unix command line, you'll learn quite a bit about what it can do, and its history. Tar has 5 main top-level commands: * `c` Create an archive * `r` Replace entries within an archive * `u` Update entries within an archive (ie, replace if they're newer) * `t` List out the contents of an archive * `x` Extract an archive to disk The other flags and options modify how this top level function works. ## High-Level API These 5 functions are the high-level API. All of them have a single-character name (for unix nerds familiar with `tar(1)`) as well as a long name (for everyone else). All the high-level functions take the following arguments, all three of which are optional and may be omitted. 1. `options` - An optional object specifying various options 2. `paths` - An array of paths to add or extract 3. `callback` - Called when the command is completed, if async. (If sync or no file specified, providing a callback throws a `TypeError`.) If the command is sync (ie, if `options.sync=true`), then the callback is not allowed, since the action will be completed immediately. If a `file` argument is specified, and the command is async, then a `Promise` is returned. In this case, if async, a callback may be provided which is called when the command is completed. If a `file` option is not specified, then a stream is returned. For `create`, this is a readable stream of the generated archive. For `list` and `extract` this is a writable stream that an archive should be written into. If a file is not specified, then a callback is not allowed, because you're already getting a stream to work with. `replace` and `update` only work on existing archives, and so require a `file` argument. Sync commands without a file argument return a stream that acts on its input immediately in the same tick. For readable streams, this means that all of the data is immediately available by calling `stream.read()`. For writable streams, it will be acted upon as soon as it is provided, but this can be at any time. ### Warnings and Errors Tar emits warnings and errors for recoverable and unrecoverable situations, respectively. In many cases, a warning only affects a single entry in an archive, or is simply informing you that it's modifying an entry to comply with the settings provided. Unrecoverable warnings will always raise an error (ie, emit `'error'` on streaming actions, throw for non-streaming sync actions, reject the returned Promise for non-streaming async operations, or call a provided callback with an `Error` as the first argument). Recoverable errors will raise an error only if `strict: true` is set in the options. Respond to (recoverable) warnings by listening to the `warn` event. Handlers receive 3 arguments: - `code` String. One of the error codes below. This may not match `data.code`, which preserves the original error code from fs and zlib. - `message` String. More details about the error. - `data` Metadata about the error. An `Error` object for errors raised by fs and zlib. All fields are attached to errors raisd by tar. Typically contains the following fields, as relevant: - `tarCode` The tar error code. - `code` Either the tar error code, or the error code set by the underlying system. - `file` The archive file being read or written. - `cwd` Working directory for creation and extraction operations. - `entry` The entry object (if it could be created) for `TAR_ENTRY_INFO`, `TAR_ENTRY_INVALID`, and `TAR_ENTRY_ERROR` warnings. - `header` The header object (if it could be created, and the entry could not be created) for `TAR_ENTRY_INFO` and `TAR_ENTRY_INVALID` warnings. - `recoverable` Boolean. If `false`, then the warning will emit an `error`, even in non-strict mode. #### Error Codes * `TAR_ENTRY_INFO` An informative error indicating that an entry is being modified, but otherwise processed normally. For example, removing `/` or `C:\` from absolute paths if `preservePaths` is not set. * `TAR_ENTRY_INVALID` An indication that a given entry is not a valid tar archive entry, and will be skipped. This occurs when: - a checksum fails, - a `linkpath` is missing for a link type, or - a `linkpath` is provided for a non-link type. If every entry in a parsed archive raises an `TAR_ENTRY_INVALID` error, then the archive is presumed to be unrecoverably broken, and `TAR_BAD_ARCHIVE` will be raised. * `TAR_ENTRY_ERROR` The entry appears to be a valid tar archive entry, but encountered an error which prevented it from being unpacked. This occurs when: - an unrecoverable fs error happens during unpacking, - an entry has `..` in the path and `preservePaths` is not set, or - an entry is extracting through a symbolic link, when `preservePaths` is not set. * `TAR_ENTRY_UNSUPPORTED` An indication that a given entry is a valid archive entry, but of a type that is unsupported, and so will be skipped in archive creation or extracting. * `TAR_ABORT` When parsing gzipped-encoded archives, the parser will abort the parse process raise a warning for any zlib errors encountered. Aborts are considered unrecoverable for both parsing and unpacking. * `TAR_BAD_ARCHIVE` The archive file is totally hosed. This can happen for a number of reasons, and always occurs at the end of a parse or extract: - An entry body was truncated before seeing the full number of bytes. - The archive contained only invalid entries, indicating that it is likely not an archive, or at least, not an archive this library can parse. `TAR_BAD_ARCHIVE` is considered informative for parse operations, but unrecoverable for extraction. Note that, if encountered at the end of an extraction, tar WILL still have extracted as much it could from the archive, so there may be some garbage files to clean up. Errors that occur deeper in the system (ie, either the filesystem or zlib) will have their error codes left intact, and a `tarCode` matching one of the above will be added to the warning metadata or the raised error object. Errors generated by tar will have one of the above codes set as the `error.code` field as well, but since errors originating in zlib or fs will have their original codes, it's better to read `error.tarCode` if you wish to see how tar is handling the issue. ### Examples The API mimics the `tar(1)` command line functionality, with aliases for more human-readable option and function names. The goal is that if you know how to use `tar(1)` in Unix, then you know how to use `require('tar')` in JavaScript. To replicate `tar czf my-tarball.tgz files and folders`, you'd do: ```js tar.c( { gzip: <true|gzip options>, file: 'my-tarball.tgz' }, ['some', 'files', 'and', 'folders'] ).then(_ => { .. tarball has been created .. }) ``` To replicate `tar cz files and folders > my-tarball.tgz`, you'd do: ```js tar.c( // or tar.create { gzip: <true|gzip options> }, ['some', 'files', 'and', 'folders'] ).pipe(fs.createWriteStream('my-tarball.tgz')) ``` To replicate `tar xf my-tarball.tgz` you'd do: ```js tar.x( // or tar.extract( { file: 'my-tarball.tgz' } ).then(_=> { .. tarball has been dumped in cwd .. }) ``` To replicate `cat my-tarball.tgz | tar x -C some-dir --strip=1`: ```js fs.createReadStream('my-tarball.tgz').pipe( tar.x({ strip: 1, C: 'some-dir' // alias for cwd:'some-dir', also ok }) ) ``` To replicate `tar tf my-tarball.tgz`, do this: ```js tar.t({ file: 'my-tarball.tgz', onentry: entry => { .. do whatever with it .. } }) ``` To replicate `cat my-tarball.tgz | tar t` do: ```js fs.createReadStream('my-tarball.tgz') .pipe(tar.t()) .on('entry', entry => { .. do whatever with it .. }) ``` To do anything synchronous, add `sync: true` to the options. Note that sync functions don't take a callback and don't return a promise. When the function returns, it's already done. Sync methods without a file argument return a sync stream, which flushes immediately. But, of course, it still won't be done until you `.end()` it. To filter entries, add `filter: <function>` to the options. Tar-creating methods call the filter with `filter(path, stat)`. Tar-reading methods (including extraction) call the filter with `filter(path, entry)`. The filter is called in the `this`-context of the `Pack` or `Unpack` stream object. The arguments list to `tar t` and `tar x` specify a list of filenames to extract or list, so they're equivalent to a filter that tests if the file is in the list. For those who _aren't_ fans of tar's single-character command names: ``` tar.c === tar.create tar.r === tar.replace (appends to archive, file is required) tar.u === tar.update (appends if newer, file is required) tar.x === tar.extract tar.t === tar.list ``` Keep reading for all the command descriptions and options, as well as the low-level API that they are built on. ### tar.c(options, fileList, callback) [alias: tar.create] Create a tarball archive. The `fileList` is an array of paths to add to the tarball. Adding a directory also adds its children recursively. An entry in `fileList` that starts with an `@` symbol is a tar archive whose entries will be added. To add a file that starts with `@`, prepend it with `./`. The following options are supported: - `file` Write the tarball archive to the specified filename. If this is specified, then the callback will be fired when the file has been written, and a promise will be returned that resolves when the file is written. If a filename is not specified, then a Readable Stream will be returned which will emit the file data. [Alias: `f`] - `sync` Act synchronously. If this is set, then any provided file will be fully written after the call to `tar.c`. If this is set, and a file is not provided, then the resulting stream will already have the data ready to `read` or `emit('data')` as soon as you request it. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `strict` Treat warnings as crash-worthy errors. Default false. - `cwd` The current working directory for creating the archive. Defaults to `process.cwd()`. [Alias: `C`] - `prefix` A path portion to prefix onto the entries in the archive. - `gzip` Set to any truthy value to create a gzipped archive, or an object with settings for `zlib.Gzip()` [Alias: `z`] - `filter` A function that gets called with `(path, stat)` for each entry being added. Return `true` to add the entry to the archive, or `false` to omit it. - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. [Alias: `P`] - `mode` The mode to set on the created file archive - `noDirRecurse` Do not recursively archive the contents of directories. [Alias: `n`] - `follow` Set to true to pack the targets of symbolic links. Without this option, symbolic links are archived as such. [Alias: `L`, `h`] - `noPax` Suppress pax extended headers. Note that this means that long paths and linkpaths will be truncated, and large or negative numeric values may be interpreted incorrectly. - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. [Alias: `m`, `no-mtime`] - `mtime` Set to a `Date` object to force a specific `mtime` for everything added to the archive. Overridden by `noMtime`. The following options are mostly internal, but can be modified in some advanced use cases, such as re-using caches between runs. - `linkCache` A Map object containing the device and inode value for any file whose nlink is > 1, to identify hard links. - `statCache` A Map object that caches calls `lstat`. - `readdirCache` A Map object that caches calls to `readdir`. - `jobs` A number specifying how many concurrent jobs to run. Defaults to 4. - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 16 MB. ### tar.x(options, fileList, callback) [alias: tar.extract] Extract a tarball archive. The `fileList` is an array of paths to extract from the tarball. If no paths are provided, then all the entries are extracted. If the archive is gzipped, then tar will detect this and unzip it. Note that all directories that are created will be forced to be writable, readable, and listable by their owner, to avoid cases where a directory prevents extraction of child entries by virtue of its mode. Most extraction errors will cause a `warn` event to be emitted. If the `cwd` is missing, or not a directory, then the extraction will fail completely. The following options are supported: - `cwd` Extract files relative to the specified directory. Defaults to `process.cwd()`. If provided, this must exist and must be a directory. [Alias: `C`] - `file` The archive file to extract. If not specified, then a Writable stream is returned where the archive data should be written. [Alias: `f`] - `sync` Create files and directories synchronously. - `strict` Treat warnings as crash-worthy errors. Default false. - `filter` A function that gets called with `(path, entry)` for each entry being unpacked. Return `true` to unpack the entry from the archive, or `false` to skip it. - `newer` Set to true to keep the existing file on disk if it's newer than the file in the archive. [Alias: `keep-newer`, `keep-newer-files`] - `keep` Do not overwrite existing files. In particular, if a file appears more than once in an archive, later copies will not overwrite earlier copies. [Alias: `k`, `keep-existing`] - `preservePaths` Allow absolute paths, paths containing `..`, and extracting through symbolic links. By default, `/` is stripped from absolute paths, `..` paths are not extracted, and any file whose location would be modified by a symbolic link is not extracted. [Alias: `P`] - `unlink` Unlink files before creating them. Without this option, tar overwrites existing files, which preserves existing hardlinks. With this option, existing hardlinks will be broken, as will any symlink that would affect the location of an extracted file. [Alias: `U`] - `strip` Remove the specified number of leading path elements. Pathnames with fewer elements will be silently skipped. Note that the pathname is edited after applying the filter, but before security checks. [Alias: `strip-components`, `stripComponents`] - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `preserveOwner` If true, tar will set the `uid` and `gid` of extracted entries to the `uid` and `gid` fields in the archive. This defaults to true when run as root, and false otherwise. If false, then files and directories will be set with the owner and group of the user running the process. This is similar to `-p` in `tar(1)`, but ACLs and other system-specific data is never unpacked in this implementation, and modes are set by default already. [Alias: `p`] - `uid` Set to a number to force ownership of all extracted files and folders, and all implicitly created directories, to be owned by the specified user id, regardless of the `uid` field in the archive. Cannot be used along with `preserveOwner`. Requires also setting a `gid` option. - `gid` Set to a number to force ownership of all extracted files and folders, and all implicitly created directories, to be owned by the specified group id, regardless of the `gid` field in the archive. Cannot be used along with `preserveOwner`. Requires also setting a `uid` option. - `noMtime` Set to true to omit writing `mtime` value for extracted entries. [Alias: `m`, `no-mtime`] - `transform` Provide a function that takes an `entry` object, and returns a stream, or any falsey value. If a stream is provided, then that stream's data will be written instead of the contents of the archive entry. If a falsey value is provided, then the entry is written to disk as normal. (To exclude items from extraction, use the `filter` option described above.) - `onentry` A function that gets called with `(entry)` for each entry that passes the filter. The following options are mostly internal, but can be modified in some advanced use cases, such as re-using caches between runs. - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 16 MB. - `umask` Filter the modes of entries like `process.umask()`. - `dmode` Default mode for directories - `fmode` Default mode for files - `dirCache` A Map object of which directories exist. - `maxMetaEntrySize` The maximum size of meta entries that is supported. Defaults to 1 MB. Note that using an asynchronous stream type with the `transform` option will cause undefined behavior in sync extractions. [MiniPass](http://npm.im/minipass)-based streams are designed for this use case. ### tar.t(options, fileList, callback) [alias: tar.list] List the contents of a tarball archive. The `fileList` is an array of paths to list from the tarball. If no paths are provided, then all the entries are listed. If the archive is gzipped, then tar will detect this and unzip it. Returns an event emitter that emits `entry` events with `tar.ReadEntry` objects. However, they don't emit `'data'` or `'end'` events. (If you want to get actual readable entries, use the `tar.Parse` class instead.) The following options are supported: - `cwd` Extract files relative to the specified directory. Defaults to `process.cwd()`. [Alias: `C`] - `file` The archive file to list. If not specified, then a Writable stream is returned where the archive data should be written. [Alias: `f`] - `sync` Read the specified file synchronously. (This has no effect when a file option isn't specified, because entries are emitted as fast as they are parsed from the stream anyway.) - `strict` Treat warnings as crash-worthy errors. Default false. - `filter` A function that gets called with `(path, entry)` for each entry being listed. Return `true` to emit the entry from the archive, or `false` to skip it. - `onentry` A function that gets called with `(entry)` for each entry that passes the filter. This is important for when both `file` and `sync` are set, because it will be called synchronously. - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 16 MB. - `noResume` By default, `entry` streams are resumed immediately after the call to `onentry`. Set `noResume: true` to suppress this behavior. Note that by opting into this, the stream will never complete until the entry data is consumed. ### tar.u(options, fileList, callback) [alias: tar.update] Add files to an archive if they are newer than the entry already in the tarball archive. The `fileList` is an array of paths to add to the tarball. Adding a directory also adds its children recursively. An entry in `fileList` that starts with an `@` symbol is a tar archive whose entries will be added. To add a file that starts with `@`, prepend it with `./`. The following options are supported: - `file` Required. Write the tarball archive to the specified filename. [Alias: `f`] - `sync` Act synchronously. If this is set, then any provided file will be fully written after the call to `tar.c`. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `strict` Treat warnings as crash-worthy errors. Default false. - `cwd` The current working directory for adding entries to the archive. Defaults to `process.cwd()`. [Alias: `C`] - `prefix` A path portion to prefix onto the entries in the archive. - `gzip` Set to any truthy value to create a gzipped archive, or an object with settings for `zlib.Gzip()` [Alias: `z`] - `filter` A function that gets called with `(path, stat)` for each entry being added. Return `true` to add the entry to the archive, or `false` to omit it. - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. [Alias: `P`] - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 16 MB. - `noDirRecurse` Do not recursively archive the contents of directories. [Alias: `n`] - `follow` Set to true to pack the targets of symbolic links. Without this option, symbolic links are archived as such. [Alias: `L`, `h`] - `noPax` Suppress pax extended headers. Note that this means that long paths and linkpaths will be truncated, and large or negative numeric values may be interpreted incorrectly. - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. [Alias: `m`, `no-mtime`] - `mtime` Set to a `Date` object to force a specific `mtime` for everything added to the archive. Overridden by `noMtime`. ### tar.r(options, fileList, callback) [alias: tar.replace] Add files to an existing archive. Because later entries override earlier entries, this effectively replaces any existing entries. The `fileList` is an array of paths to add to the tarball. Adding a directory also adds its children recursively. An entry in `fileList` that starts with an `@` symbol is a tar archive whose entries will be added. To add a file that starts with `@`, prepend it with `./`. The following options are supported: - `file` Required. Write the tarball archive to the specified filename. [Alias: `f`] - `sync` Act synchronously. If this is set, then any provided file will be fully written after the call to `tar.c`. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `strict` Treat warnings as crash-worthy errors. Default false. - `cwd` The current working directory for adding entries to the archive. Defaults to `process.cwd()`. [Alias: `C`] - `prefix` A path portion to prefix onto the entries in the archive. - `gzip` Set to any truthy value to create a gzipped archive, or an object with settings for `zlib.Gzip()` [Alias: `z`] - `filter` A function that gets called with `(path, stat)` for each entry being added. Return `true` to add the entry to the archive, or `false` to omit it. - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. [Alias: `P`] - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 16 MB. - `noDirRecurse` Do not recursively archive the contents of directories. [Alias: `n`] - `follow` Set to true to pack the targets of symbolic links. Without this option, symbolic links are archived as such. [Alias: `L`, `h`] - `noPax` Suppress pax extended headers. Note that this means that long paths and linkpaths will be truncated, and large or negative numeric values may be interpreted incorrectly. - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. [Alias: `m`, `no-mtime`] - `mtime` Set to a `Date` object to force a specific `mtime` for everything added to the archive. Overridden by `noMtime`. ## Low-Level API ### class tar.Pack A readable tar stream. Has all the standard readable stream interface stuff. `'data'` and `'end'` events, `read()` method, `pause()` and `resume()`, etc. #### constructor(options) The following options are supported: - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `strict` Treat warnings as crash-worthy errors. Default false. - `cwd` The current working directory for creating the archive. Defaults to `process.cwd()`. - `prefix` A path portion to prefix onto the entries in the archive. - `gzip` Set to any truthy value to create a gzipped archive, or an object with settings for `zlib.Gzip()` - `filter` A function that gets called with `(path, stat)` for each entry being added. Return `true` to add the entry to the archive, or `false` to omit it. - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. - `linkCache` A Map object containing the device and inode value for any file whose nlink is > 1, to identify hard links. - `statCache` A Map object that caches calls `lstat`. - `readdirCache` A Map object that caches calls to `readdir`. - `jobs` A number specifying how many concurrent jobs to run. Defaults to 4. - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 16 MB. - `noDirRecurse` Do not recursively archive the contents of directories. - `follow` Set to true to pack the targets of symbolic links. Without this option, symbolic links are archived as such. - `noPax` Suppress pax extended headers. Note that this means that long paths and linkpaths will be truncated, and large or negative numeric values may be interpreted incorrectly. - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. - `mtime` Set to a `Date` object to force a specific `mtime` for everything added to the archive. Overridden by `noMtime`. #### add(path) Adds an entry to the archive. Returns the Pack stream. #### write(path) Adds an entry to the archive. Returns true if flushed. #### end() Finishes the archive. ### class tar.Pack.Sync Synchronous version of `tar.Pack`. ### class tar.Unpack A writable stream that unpacks a tar archive onto the file system. All the normal writable stream stuff is supported. `write()` and `end()` methods, `'drain'` events, etc. Note that all directories that are created will be forced to be writable, readable, and listable by their owner, to avoid cases where a directory prevents extraction of child entries by virtue of its mode. `'close'` is emitted when it's done writing stuff to the file system. Most unpack errors will cause a `warn` event to be emitted. If the `cwd` is missing, or not a directory, then an error will be emitted. #### constructor(options) - `cwd` Extract files relative to the specified directory. Defaults to `process.cwd()`. If provided, this must exist and must be a directory. - `filter` A function that gets called with `(path, entry)` for each entry being unpacked. Return `true` to unpack the entry from the archive, or `false` to skip it. - `newer` Set to true to keep the existing file on disk if it's newer than the file in the archive. - `keep` Do not overwrite existing files. In particular, if a file appears more than once in an archive, later copies will not overwrite earlier copies. - `preservePaths` Allow absolute paths, paths containing `..`, and extracting through symbolic links. By default, `/` is stripped from absolute paths, `..` paths are not extracted, and any file whose location would be modified by a symbolic link is not extracted. - `unlink` Unlink files before creating them. Without this option, tar overwrites existing files, which preserves existing hardlinks. With this option, existing hardlinks will be broken, as will any symlink that would affect the location of an extracted file. - `strip` Remove the specified number of leading path elements. Pathnames with fewer elements will be silently skipped. Note that the pathname is edited after applying the filter, but before security checks. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `umask` Filter the modes of entries like `process.umask()`. - `dmode` Default mode for directories - `fmode` Default mode for files - `dirCache` A Map object of which directories exist. - `maxMetaEntrySize` The maximum size of meta entries that is supported. Defaults to 1 MB. - `preserveOwner` If true, tar will set the `uid` and `gid` of extracted entries to the `uid` and `gid` fields in the archive. This defaults to true when run as root, and false otherwise. If false, then files and directories will be set with the owner and group of the user running the process. This is similar to `-p` in `tar(1)`, but ACLs and other system-specific data is never unpacked in this implementation, and modes are set by default already. - `win32` True if on a windows platform. Causes behavior where filenames containing `<|>?` chars are converted to windows-compatible values while being unpacked. - `uid` Set to a number to force ownership of all extracted files and folders, and all implicitly created directories, to be owned by the specified user id, regardless of the `uid` field in the archive. Cannot be used along with `preserveOwner`. Requires also setting a `gid` option. - `gid` Set to a number to force ownership of all extracted files and folders, and all implicitly created directories, to be owned by the specified group id, regardless of the `gid` field in the archive. Cannot be used along with `preserveOwner`. Requires also setting a `uid` option. - `noMtime` Set to true to omit writing `mtime` value for extracted entries. - `transform` Provide a function that takes an `entry` object, and returns a stream, or any falsey value. If a stream is provided, then that stream's data will be written instead of the contents of the archive entry. If a falsey value is provided, then the entry is written to disk as normal. (To exclude items from extraction, use the `filter` option described above.) - `strict` Treat warnings as crash-worthy errors. Default false. - `onentry` A function that gets called with `(entry)` for each entry that passes the filter. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") ### class tar.Unpack.Sync Synchronous version of `tar.Unpack`. Note that using an asynchronous stream type with the `transform` option will cause undefined behavior in sync unpack streams. [MiniPass](http://npm.im/minipass)-based streams are designed for this use case. ### class tar.Parse A writable stream that parses a tar archive stream. All the standard writable stream stuff is supported. If the archive is gzipped, then tar will detect this and unzip it. Emits `'entry'` events with `tar.ReadEntry` objects, which are themselves readable streams that you can pipe wherever. Each `entry` will not emit until the one before it is flushed through, so make sure to either consume the data (with `on('data', ...)` or `.pipe(...)`) or throw it away with `.resume()` to keep the stream flowing. #### constructor(options) Returns an event emitter that emits `entry` events with `tar.ReadEntry` objects. The following options are supported: - `strict` Treat warnings as crash-worthy errors. Default false. - `filter` A function that gets called with `(path, entry)` for each entry being listed. Return `true` to emit the entry from the archive, or `false` to skip it. - `onentry` A function that gets called with `(entry)` for each entry that passes the filter. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") #### abort(error) Stop all parsing activities. This is called when there are zlib errors. It also emits an unrecoverable warning with the error provided. ### class tar.ReadEntry extends [MiniPass](http://npm.im/minipass) A representation of an entry that is being read out of a tar archive. It has the following fields: - `extended` The extended metadata object provided to the constructor. - `globalExtended` The global extended metadata object provided to the constructor. - `remain` The number of bytes remaining to be written into the stream. - `blockRemain` The number of 512-byte blocks remaining to be written into the stream. - `ignore` Whether this entry should be ignored. - `meta` True if this represents metadata about the next entry, false if it represents a filesystem object. - All the fields from the header, extended header, and global extended header are added to the ReadEntry object. So it has `path`, `type`, `size, `mode`, and so on. #### constructor(header, extended, globalExtended) Create a new ReadEntry object with the specified header, extended header, and global extended header values. ### class tar.WriteEntry extends [MiniPass](http://npm.im/minipass) A representation of an entry that is being written from the file system into a tar archive. Emits data for the Header, and for the Pax Extended Header if one is required, as well as any body data. Creating a WriteEntry for a directory does not also create WriteEntry objects for all of the directory contents. It has the following fields: - `path` The path field that will be written to the archive. By default, this is also the path from the cwd to the file system object. - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `myuid` If supported, the uid of the user running the current process. - `myuser` The `env.USER` string if set, or `''`. Set as the entry `uname` field if the file's `uid` matches `this.myuid`. - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 1 MB. - `linkCache` A Map object containing the device and inode value for any file whose nlink is > 1, to identify hard links. - `statCache` A Map object that caches calls `lstat`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. - `cwd` The current working directory for creating the archive. Defaults to `process.cwd()`. - `absolute` The absolute path to the entry on the filesystem. By default, this is `path.resolve(this.cwd, this.path)`, but it can be overridden explicitly. - `strict` Treat warnings as crash-worthy errors. Default false. - `win32` True if on a windows platform. Causes behavior where paths replace `\` with `/` and filenames containing the windows-compatible forms of `<|>?:` characters are converted to actual `<|>?:` characters in the archive. - `noPax` Suppress pax extended headers. Note that this means that long paths and linkpaths will be truncated, and large or negative numeric values may be interpreted incorrectly. - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. #### constructor(path, options) `path` is the path of the entry as it is written in the archive. The following options are supported: - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `maxReadSize` The maximum buffer size for `fs.read()` operations. Defaults to 1 MB. - `linkCache` A Map object containing the device and inode value for any file whose nlink is > 1, to identify hard links. - `statCache` A Map object that caches calls `lstat`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. - `cwd` The current working directory for creating the archive. Defaults to `process.cwd()`. - `absolute` The absolute path to the entry on the filesystem. By default, this is `path.resolve(this.cwd, this.path)`, but it can be overridden explicitly. - `strict` Treat warnings as crash-worthy errors. Default false. - `win32` True if on a windows platform. Causes behavior where paths replace `\` with `/`. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. - `umask` Set to restrict the modes on the entries in the archive, somewhat like how umask works on file creation. Defaults to `process.umask()` on unix systems, or `0o22` on Windows. #### warn(message, data) If strict, emit an error with the provided message. Othewise, emit a `'warn'` event with the provided message and data. ### class tar.WriteEntry.Sync Synchronous version of tar.WriteEntry ### class tar.WriteEntry.Tar A version of tar.WriteEntry that gets its data from a tar.ReadEntry instead of from the filesystem. #### constructor(readEntry, options) `readEntry` is the entry being read out of another archive. The following options are supported: - `portable` Omit metadata that is system-specific: `ctime`, `atime`, `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`. Note that `mtime` is still included, because this is necessary for other time-based operations. Additionally, `mode` is set to a "reasonable default" for most unix systems, based on a `umask` value of `0o22`. - `preservePaths` Allow absolute paths. By default, `/` is stripped from absolute paths. - `strict` Treat warnings as crash-worthy errors. Default false. - `onwarn` A function that will get called with `(code, message, data)` for any warnings encountered. (See "Warnings and Errors") - `noMtime` Set to true to omit writing `mtime` values for entries. Note that this prevents using other mtime-based features like `tar.update` or the `keepNewer` option with the resulting tar archive. ### class tar.Header A class for reading and writing header blocks. It has the following fields: - `nullBlock` True if decoding a block which is entirely composed of `0x00` null bytes. (Useful because tar files are terminated by at least 2 null blocks.) - `cksumValid` True if the checksum in the header is valid, false otherwise. - `needPax` True if the values, as encoded, will require a Pax extended header. - `path` The path of the entry. - `mode` The 4 lowest-order octal digits of the file mode. That is, read/write/execute permissions for world, group, and owner, and the setuid, setgid, and sticky bits. - `uid` Numeric user id of the file owner - `gid` Numeric group id of the file owner - `size` Size of the file in bytes - `mtime` Modified time of the file - `cksum` The checksum of the header. This is generated by adding all the bytes of the header block, treating the checksum field itself as all ascii space characters (that is, `0x20`). - `type` The human-readable name of the type of entry this represents, or the alphanumeric key if unknown. - `typeKey` The alphanumeric key for the type of entry this header represents. - `linkpath` The target of Link and SymbolicLink entries. - `uname` Human-readable user name of the file owner - `gname` Human-readable group name of the file owner - `devmaj` The major portion of the device number. Always `0` for files, directories, and links. - `devmin` The minor portion of the device number. Always `0` for files, directories, and links. - `atime` File access time. - `ctime` File change time. #### constructor(data, [offset=0]) `data` is optional. It is either a Buffer that should be interpreted as a tar Header starting at the specified offset and continuing for 512 bytes, or a data object of keys and values to set on the header object, and eventually encode as a tar Header. #### decode(block, offset) Decode the provided buffer starting at the specified offset. Buffer length must be greater than 512 bytes. #### set(data) Set the fields in the data object. #### encode(buffer, offset) Encode the header fields into the buffer at the specified offset. Returns `this.needPax` to indicate whether a Pax Extended Header is required to properly encode the specified data. ### class tar.Pax An object representing a set of key-value pairs in an Pax extended header entry. It has the following fields. Where the same name is used, they have the same semantics as the tar.Header field of the same name. - `global` True if this represents a global extended header, or false if it is for a single entry. - `atime` - `charset` - `comment` - `ctime` - `gid` - `gname` - `linkpath` - `mtime` - `path` - `size` - `uid` - `uname` - `dev` - `ino` - `nlink` #### constructor(object, global) Set the fields set in the object. `global` is a boolean that defaults to false. #### encode() Return a Buffer containing the header and body for the Pax extended header entry, or `null` if there is nothing to encode. #### encodeBody() Return a string representing the body of the pax extended header entry. #### encodeField(fieldName) Return a string representing the key/value encoding for the specified fieldName, or `''` if the field is unset. ### tar.Pax.parse(string, extended, global) Return a new Pax object created by parsing the contents of the string provided. If the `extended` object is set, then also add the fields from that object. (This is necessary because multiple metadata entries can occur in sequence.) ### tar.types A translation table for the `type` field in tar headers. #### tar.types.name.get(code) Get the human-readable name for a given alphanumeric code. #### tar.types.code.get(name) Get the alphanumeric code for a given human-readable name. # lodash.clonedeep v4.5.0 The [lodash](https://lodash.com/) method `_.cloneDeep` exported as a [Node.js](https://nodejs.org/) module. ## Installation Using npm: ```bash $ {sudo -H} npm i -g npm $ npm i --save lodash.clonedeep ``` In Node.js: ```js var cloneDeep = require('lodash.clonedeep'); ``` See the [documentation](https://lodash.com/docs#cloneDeep) or [package source](https://github.com/lodash/lodash/blob/4.5.0-npm-packages/lodash.clonedeep) for more details. Compiler frontend for node.js ============================= Usage ----- For an up to date list of available command line options, see: ``` $> asc --help ``` API --- The API accepts the same options as the CLI but also lets you override stdout and stderr and/or provide a callback. Example: ```js const asc = require("assemblyscript/cli/asc"); asc.ready.then(() => { asc.main([ "myModule.ts", "--binaryFile", "myModule.wasm", "--optimize", "--sourceMap", "--measure" ], { stdout: process.stdout, stderr: process.stderr }, function(err) { if (err) throw err; ... }); }); ``` Available command line options can also be obtained programmatically: ```js const options = require("assemblyscript/cli/asc.json"); ... ``` You can also compile a source string directly, for example in a browser environment: ```js const asc = require("assemblyscript/cli/asc"); asc.ready.then(() => { const { binary, text, stdout, stderr } = asc.compileString(`...`, { optimize: 2 }); }); ... ``` ## Test Strategy - tests are copied from the [polyfill implementation](https://github.com/tc39/proposal-temporal/tree/main/polyfill/test) - tests should be removed if they relate to features that do not make sense for TS/AS, i.e. tests that validate the shape of an object do not make sense in a language with compile-time type checking - tests that fail because a feature has not been implemented yet should be left as failures. # near-api-js [](https://travis-ci.com/near/near-api-js) [](https://gitpod.io/#https://github.com/near/near-api-js) A JavaScript/TypeScript library for development of DApps on the NEAR platform # Documentation [Read the TypeDoc API documentation](https://near.github.io/near-api-js/) --- # Examples ## [Quick Reference](https://github.com/near/near-api-js/blob/master/examples/quick-reference.md) _(Cheat sheet / quick reference)_ ## [Cookbook](https://github.com/near/near-api-js/blob/master/examples/cookbook/README.md) _(Common use cases / more complex examples)_ --- # Contribute to this library 1. Install dependencies yarn 2. Run continuous build with: yarn build -- -w # Publish Prepare `dist` version by running: yarn dist When publishing to npm use [np](https://github.com/sindresorhus/np). --- # Integration Test Start the node by following instructions from [nearcore](https://github.com/nearprotocol/nearcore), then yarn test Tests use sample contract from `near-hello` npm package, see https://github.com/nearprotocol/near-hello # Update error schema Follow next steps: 1. [Change hash for the commit with errors in the nearcore](https://github.com/near/near-api-js/blob/master/gen_error_types.js#L7-L9) 2. Fetch new schema: `node fetch_error_schema.js` 3. `yarn build` to update `lib/**.js` files # License This repository is distributed under the terms of both the MIT license and the Apache License (Version 2.0). See [LICENSE](LICENSE) and [LICENSE-APACHE](LICENSE-APACHE) for details. # ansi-align > align-text with ANSI support for CLIs [](https://travis-ci.org/nexdrew/ansi-align) [](https://coveralls.io/github/nexdrew/ansi-align?branch=master) [](https://github.com/conventional-changelog/standard-version) [](https://greenkeeper.io/) Easily center- or right- align a block of text, carefully ignoring ANSI escape codes. E.g. turn this: <img width="281" alt="ansi text block no alignment :(" src="https://cloud.githubusercontent.com/assets/1929625/14937509/7c3076dc-0ed7-11e6-8c16-4f6a4ccc8346.png"> Into this: <img width="278" alt="ansi text block center aligned!" src="https://cloud.githubusercontent.com/assets/1929625/14937510/7c3ca0b0-0ed7-11e6-8f0a-541ca39b6e0a.png"> ## Install ```sh npm install --save ansi-align ``` ```js var ansiAlign = require('ansi-align') ``` ## API ### `ansiAlign(text, [opts])` Align the given text per the line with the greatest [`string-width`](https://github.com/sindresorhus/string-width), returning a new string (or array). #### Arguments - `text`: required, string or array The text to align. If a string is given, it will be split using either the `opts.split` value or `'\n'` by default. If an array is given, a different array of modified strings will be returned. - `opts`: optional, object Options to change behavior, see below. #### Options - `opts.align`: string, default `'center'` The alignment mode. Use `'center'` for center-alignment, `'right'` for right-alignment, or `'left'` for left-alignment. Note that the given `text` is assumed to be left-aligned already, so specifying `align: 'left'` just returns the `text` as is (no-op). - `opts.split`: string or RegExp, default `'\n'` The separator to use when splitting the text. Only used if text is given as a string. - `opts.pad`: string, default `' '` The value used to left-pad (prepend to) lines of lesser width. Will be repeated as necessary to adjust alignment to the line with the greatest width. ### `ansiAlign.center(text)` Alias for `ansiAlign(text, { align: 'center' })`. ### `ansiAlign.right(text)` Alias for `ansiAlign(text, { align: 'right' })`. ### `ansiAlign.left(text)` Alias for `ansiAlign(text, { align: 'left' })`, which is a no-op. ## Similar Packages - [`center-align`](https://github.com/jonschlinkert/center-align): Very close to this package, except it doesn't support ANSI codes. - [`left-pad`](https://github.com/camwest/left-pad): Great for left-padding but does not support center alignment or ANSI codes. - Pretty much anything by the [chalk](https://github.com/chalk) team ## License ISC © Contributors # debug [](https://travis-ci.org/visionmedia/debug) [](https://coveralls.io/github/visionmedia/debug?branch=master) [](https://visionmedia-community-slackin.now.sh/) [](#backers) [](#sponsors) <img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png"> A tiny JavaScript debugging utility modelled after Node.js core's debugging technique. Works in Node.js and web browsers. ## Installation ```bash $ npm install debug ``` ## Usage `debug` exposes a function; simply pass this function the name of your module, and it will return a decorated version of `console.error` for you to pass debug statements to. This will allow you to toggle the debug output for different parts of your module as well as the module as a whole. Example [_app.js_](./examples/node/app.js): ```js var debug = require('debug')('http') , http = require('http') , name = 'My App'; // fake app debug('booting %o', name); http.createServer(function(req, res){ debug(req.method + ' ' + req.url); res.end('hello\n'); }).listen(3000, function(){ debug('listening'); }); // fake worker of some kind require('./worker'); ``` Example [_worker.js_](./examples/node/worker.js): ```js var a = require('debug')('worker:a') , b = require('debug')('worker:b'); function work() { a('doing lots of uninteresting work'); setTimeout(work, Math.random() * 1000); } work(); function workb() { b('doing some work'); setTimeout(workb, Math.random() * 2000); } workb(); ``` The `DEBUG` environment variable is then used to enable these based on space or comma-delimited names. Here are some examples: <img width="647" alt="screen shot 2017-08-08 at 12 53 04 pm" src="https://user-images.githubusercontent.com/71256/29091703-a6302cdc-7c38-11e7-8304-7c0b3bc600cd.png"> <img width="647" alt="screen shot 2017-08-08 at 12 53 38 pm" src="https://user-images.githubusercontent.com/71256/29091700-a62a6888-7c38-11e7-800b-db911291ca2b.png"> <img width="647" alt="screen shot 2017-08-08 at 12 53 25 pm" src="https://user-images.githubusercontent.com/71256/29091701-a62ea114-7c38-11e7-826a-2692bedca740.png"> #### Windows note On Windows the environment variable is set using the `set` command. ```cmd set DEBUG=*,-not_this ``` Note that PowerShell uses different syntax to set environment variables. ```cmd $env:DEBUG = "*,-not_this" ``` Then, run the program to be debugged as usual. ## Namespace Colors Every debug instance has a color generated for it based on its namespace name. This helps when visually parsing the debug output to identify which debug instance a debug line belongs to. #### Node.js In Node.js, colors are enabled when stderr is a TTY. You also _should_ install the [`supports-color`](https://npmjs.org/supports-color) module alongside debug, otherwise debug will only use a small handful of basic colors. <img width="521" src="https://user-images.githubusercontent.com/71256/29092181-47f6a9e6-7c3a-11e7-9a14-1928d8a711cd.png"> #### Web Browser Colors are also enabled on "Web Inspectors" that understand the `%c` formatting option. These are WebKit web inspectors, Firefox ([since version 31](https://hacks.mozilla.org/2014/05/editable-box-model-multiple-selection-sublime-text-keys-much-more-firefox-developer-tools-episode-31/)) and the Firebug plugin for Firefox (any version). <img width="524" src="https://user-images.githubusercontent.com/71256/29092033-b65f9f2e-7c39-11e7-8e32-f6f0d8e865c1.png"> ## Millisecond diff When actively developing an application it can be useful to see when the time spent between one `debug()` call and the next. Suppose for example you invoke `debug()` before requesting a resource, and after as well, the "+NNNms" will show you how much time was spent between calls. <img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png"> When stdout is not a TTY, `Date#toISOString()` is used, making it more useful for logging the debug information as shown below: <img width="647" src="https://user-images.githubusercontent.com/71256/29091956-6bd78372-7c39-11e7-8c55-c948396d6edd.png"> ## Conventions If you're using this in one or more of your libraries, you _should_ use the name of your library so that developers may toggle debugging as desired without guessing names. If you have more than one debuggers you _should_ prefix them with your library name and use ":" to separate features. For example "bodyParser" from Connect would then be "connect:bodyParser". If you append a "*" to the end of your name, it will always be enabled regardless of the setting of the DEBUG environment variable. You can then use it for normal output as well as debug output. ## Wildcards The `*` character may be used as a wildcard. Suppose for example your library has debuggers named "connect:bodyParser", "connect:compress", "connect:session", instead of listing all three with `DEBUG=connect:bodyParser,connect:compress,connect:session`, you may simply do `DEBUG=connect:*`, or to run everything using this module simply use `DEBUG=*`. You can also exclude specific debuggers by prefixing them with a "-" character. For example, `DEBUG=*,-connect:*` would include all debuggers except those starting with "connect:". ## Environment Variables When running through Node.js, you can set a few environment variables that will change the behavior of the debug logging: | Name | Purpose | |-----------|-------------------------------------------------| | `DEBUG` | Enables/disables specific debugging namespaces. | | `DEBUG_HIDE_DATE` | Hide date from debug output (non-TTY). | | `DEBUG_COLORS`| Whether or not to use colors in the debug output. | | `DEBUG_DEPTH` | Object inspection depth. | | `DEBUG_SHOW_HIDDEN` | Shows hidden properties on inspected objects. | __Note:__ The environment variables beginning with `DEBUG_` end up being converted into an Options object that gets used with `%o`/`%O` formatters. See the Node.js documentation for [`util.inspect()`](https://nodejs.org/api/util.html#util_util_inspect_object_options) for the complete list. ## Formatters Debug uses [printf-style](https://wikipedia.org/wiki/Printf_format_string) formatting. Below are the officially supported formatters: | Formatter | Representation | |-----------|----------------| | `%O` | Pretty-print an Object on multiple lines. | | `%o` | Pretty-print an Object all on a single line. | | `%s` | String. | | `%d` | Number (both integer and float). | | `%j` | JSON. Replaced with the string '[Circular]' if the argument contains circular references. | | `%%` | Single percent sign ('%'). This does not consume an argument. | ### Custom formatters You can add custom formatters by extending the `debug.formatters` object. For example, if you wanted to add support for rendering a Buffer as hex with `%h`, you could do something like: ```js const createDebug = require('debug') createDebug.formatters.h = (v) => { return v.toString('hex') } // …elsewhere const debug = createDebug('foo') debug('this is hex: %h', new Buffer('hello world')) // foo this is hex: 68656c6c6f20776f726c6421 +0ms ``` ## Browser Support You can build a browser-ready script using [browserify](https://github.com/substack/node-browserify), or just use the [browserify-as-a-service](https://wzrd.in/) [build](https://wzrd.in/standalone/debug@latest), if you don't want to build it yourself. Debug's enable state is currently persisted by `localStorage`. Consider the situation shown below where you have `worker:a` and `worker:b`, and wish to debug both. You can enable this using `localStorage.debug`: ```js localStorage.debug = 'worker:*' ``` And then refresh the page. ```js a = debug('worker:a'); b = debug('worker:b'); setInterval(function(){ a('doing some work'); }, 1000); setInterval(function(){ b('doing some work'); }, 1200); ``` ## Output streams By default `debug` will log to stderr, however this can be configured per-namespace by overriding the `log` method: Example [_stdout.js_](./examples/node/stdout.js): ```js var debug = require('debug'); var error = debug('app:error'); // by default stderr is used error('goes to stderr!'); var log = debug('app:log'); // set this namespace to log via console.log log.log = console.log.bind(console); // don't forget to bind to console! log('goes to stdout'); error('still goes to stderr!'); // set all output to go via console.info // overrides all per-namespace log settings debug.log = console.info.bind(console); error('now goes to stdout via console.info'); log('still goes to stdout, but via console.info now'); ``` ## Checking whether a debug target is enabled After you've created a debug instance, you can determine whether or not it is enabled by checking the `enabled` property: ```javascript const debug = require('debug')('http'); if (debug.enabled) { // do stuff... } ``` You can also manually toggle this property to force the debug instance to be enabled or disabled. ## Authors - TJ Holowaychuk - Nathan Rajlich - Andrew Rhyne ## Backers Support us with a monthly donation and help us continue our activities. 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Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # <img src="./logo.png" alt="bn.js" width="160" height="160" /> > BigNum in pure javascript [](http://travis-ci.org/indutny/bn.js) ## Install `npm install --save bn.js` ## Usage ```js const BN = require('bn.js'); var a = new BN('dead', 16); var b = new BN('101010', 2); var res = a.add(b); console.log(res.toString(10)); // 57047 ``` **Note**: decimals are not supported in this library. ## Sponsors [](https://scoutapm.com/) My Open Source work is supported by [Scout APM](https://scoutapm.com/) and [other sponsors](https://github.com/sponsors/indutny). ## Notation ### Prefixes There are several prefixes to instructions that affect the way they work. Here is the list of them in the order of appearance in the function name: * `i` - perform operation in-place, storing the result in the host object (on which the method was invoked). Might be used to avoid number allocation costs * `u` - unsigned, ignore the sign of operands when performing operation, or always return positive value. Second case applies to reduction operations like `mod()`. In such cases if the result will be negative - modulo will be added to the result to make it positive ### Postfixes * `n` - the argument of the function must be a plain JavaScript Number. Decimals are not supported. * `rn` - both argument and return value of the function are plain JavaScript Numbers. Decimals are not supported. ### Examples * `a.iadd(b)` - perform addition on `a` and `b`, storing the result in `a` * `a.umod(b)` - reduce `a` modulo `b`, returning positive value * `a.iushln(13)` - shift bits of `a` left by 13 ## Instructions Prefixes/postfixes are put in parens at the end of the line. `endian` - could be either `le` (little-endian) or `be` (big-endian). ### Utilities * `a.clone()` - clone number * `a.toString(base, length)` - convert to base-string and pad with zeroes * `a.toNumber()` - convert to Javascript Number (limited to 53 bits) * `a.toJSON()` - convert to JSON compatible hex string (alias of `toString(16)`) * `a.toArray(endian, length)` - convert to byte `Array`, and optionally zero pad to length, throwing if already exceeding * `a.toArrayLike(type, endian, length)` - convert to an instance of `type`, which must behave like an `Array` * `a.toBuffer(endian, length)` - convert to Node.js Buffer (if available). For compatibility with browserify and similar tools, use this instead: `a.toArrayLike(Buffer, endian, length)` * `a.bitLength()` - get number of bits occupied * `a.zeroBits()` - return number of less-significant consequent zero bits (example: `1010000` has 4 zero bits) * `a.byteLength()` - return number of bytes occupied * `a.isNeg()` - true if the number is negative * `a.isEven()` - no comments * `a.isOdd()` - no comments * `a.isZero()` - no comments * `a.cmp(b)` - compare numbers and return `-1` (a `<` b), `0` (a `==` b), or `1` (a `>` b) depending on the comparison result (`ucmp`, `cmpn`) * `a.lt(b)` - `a` less than `b` (`n`) * `a.lte(b)` - `a` less than or equals `b` (`n`) * `a.gt(b)` - `a` greater than `b` (`n`) * `a.gte(b)` - `a` greater than or equals `b` (`n`) * `a.eq(b)` - `a` equals `b` (`n`) * `a.toTwos(width)` - convert to two's complement representation, where `width` is bit width * `a.fromTwos(width)` - convert from two's complement representation, where `width` is the bit width * `BN.isBN(object)` - returns true if the supplied `object` is a BN.js instance * `BN.max(a, b)` - return `a` if `a` bigger than `b` * `BN.min(a, b)` - return `a` if `a` less than `b` ### Arithmetics * `a.neg()` - negate sign (`i`) * `a.abs()` - absolute value (`i`) * `a.add(b)` - addition (`i`, `n`, `in`) * `a.sub(b)` - subtraction (`i`, `n`, `in`) * `a.mul(b)` - multiply (`i`, `n`, `in`) * `a.sqr()` - square (`i`) * `a.pow(b)` - raise `a` to the power of `b` * `a.div(b)` - divide (`divn`, `idivn`) * `a.mod(b)` - reduct (`u`, `n`) (but no `umodn`) * `a.divmod(b)` - quotient and modulus obtained by dividing * `a.divRound(b)` - rounded division ### Bit operations * `a.or(b)` - or (`i`, `u`, `iu`) * `a.and(b)` - and (`i`, `u`, `iu`, `andln`) (NOTE: `andln` is going to be replaced with `andn` in future) * `a.xor(b)` - xor (`i`, `u`, `iu`) * `a.setn(b, value)` - set specified bit to `value` * `a.shln(b)` - shift left (`i`, `u`, `iu`) * `a.shrn(b)` - shift right (`i`, `u`, `iu`) * `a.testn(b)` - test if specified bit is set * `a.maskn(b)` - clear bits with indexes higher or equal to `b` (`i`) * `a.bincn(b)` - add `1 << b` to the number * `a.notn(w)` - not (for the width specified by `w`) (`i`) ### Reduction * `a.gcd(b)` - GCD * `a.egcd(b)` - Extended GCD results (`{ a: ..., b: ..., gcd: ... }`) * `a.invm(b)` - inverse `a` modulo `b` ## Fast reduction When doing lots of reductions using the same modulo, it might be beneficial to use some tricks: like [Montgomery multiplication][0], or using special algorithm for [Mersenne Prime][1]. ### Reduction context To enable this trick one should create a reduction context: ```js var red = BN.red(num); ``` where `num` is just a BN instance. Or: ```js var red = BN.red(primeName); ``` Where `primeName` is either of these [Mersenne Primes][1]: * `'k256'` * `'p224'` * `'p192'` * `'p25519'` Or: ```js var red = BN.mont(num); ``` To reduce numbers with [Montgomery trick][0]. `.mont()` is generally faster than `.red(num)`, but slower than `BN.red(primeName)`. ### Converting numbers Before performing anything in reduction context - numbers should be converted to it. Usually, this means that one should: * Convert inputs to reducted ones * Operate on them in reduction context * Convert outputs back from the reduction context Here is how one may convert numbers to `red`: ```js var redA = a.toRed(red); ``` Where `red` is a reduction context created using instructions above Here is how to convert them back: ```js var a = redA.fromRed(); ``` ### Red instructions Most of the instructions from the very start of this readme have their counterparts in red context: * `a.redAdd(b)`, `a.redIAdd(b)` * `a.redSub(b)`, `a.redISub(b)` * `a.redShl(num)` * `a.redMul(b)`, `a.redIMul(b)` * `a.redSqr()`, `a.redISqr()` * `a.redSqrt()` - square root modulo reduction context's prime * `a.redInvm()` - modular inverse of the number * `a.redNeg()` * `a.redPow(b)` - modular exponentiation ### Number Size Optimized for elliptic curves that work with 256-bit numbers. There is no limitation on the size of the numbers. ## LICENSE This software is licensed under the MIT License. [0]: https://en.wikipedia.org/wiki/Montgomery_modular_multiplication [1]: https://en.wikipedia.org/wiki/Mersenne_prime # rc The non-configurable configuration loader for lazy people. ## Usage The only option is to pass rc the name of your app, and your default configuration. ```javascript var conf = require('rc')(appname, { //defaults go here. port: 2468, //defaults which are objects will be merged, not replaced views: { engine: 'jade' } }); ``` `rc` will return your configuration options merged with the defaults you specify. If you pass in a predefined defaults object, it will be mutated: ```javascript var conf = {}; require('rc')(appname, conf); ``` If `rc` finds any config files for your app, the returned config object will have a `configs` array containing their paths: ```javascript var appCfg = require('rc')(appname, conf); appCfg.configs[0] // /etc/appnamerc appCfg.configs[1] // /home/dominictarr/.config/appname appCfg.config // same as appCfg.configs[appCfg.configs.length - 1] ``` ## Standards Given your application name (`appname`), rc will look in all the obvious places for configuration. * command line arguments, parsed by minimist _(e.g. `--foo baz`, also nested: `--foo.bar=baz`)_ * environment variables prefixed with `${appname}_` * or use "\_\_" to indicate nested properties <br/> _(e.g. `appname_foo__bar__baz` => `foo.bar.baz`)_ * if you passed an option `--config file` then from that file * a local `.${appname}rc` or the first found looking in `./ ../ ../../ ../../../` etc. * `$HOME/.${appname}rc` * `$HOME/.${appname}/config` * `$HOME/.config/${appname}` * `$HOME/.config/${appname}/config` * `/etc/${appname}rc` * `/etc/${appname}/config` * the defaults object you passed in. All configuration sources that were found will be flattened into one object, so that sources **earlier** in this list override later ones. ## Configuration File Formats Configuration files (e.g. `.appnamerc`) may be in either [json](http://json.org/example) or [ini](http://en.wikipedia.org/wiki/INI_file) format. **No** file extension (`.json` or `.ini`) should be used. The example configurations below are equivalent: #### Formatted as `ini` ``` ; You can include comments in `ini` format if you want. dependsOn=0.10.0 ; `rc` has built-in support for ini sections, see? [commands] www = ./commands/www console = ./commands/repl ; You can even do nested sections [generators.options] engine = ejs [generators.modules] new = generate-new engine = generate-backend ``` #### Formatted as `json` ```javascript { // You can even comment your JSON, if you want "dependsOn": "0.10.0", "commands": { "www": "./commands/www", "console": "./commands/repl" }, "generators": { "options": { "engine": "ejs" }, "modules": { "new": "generate-new", "backend": "generate-backend" } } } ``` Comments are stripped from JSON config via [strip-json-comments](https://github.com/sindresorhus/strip-json-comments). > Since ini, and env variables do not have a standard for types, your application needs be prepared for strings. To ensure that string representations of booleans and numbers are always converted into their proper types (especially useful if you intend to do strict `===` comparisons), consider using a module such as [parse-strings-in-object](https://github.com/anselanza/parse-strings-in-object) to wrap the config object returned from rc. ## Simple example demonstrating precedence Assume you have an application like this (notice the hard-coded defaults passed to rc): ``` const conf = require('rc')('myapp', { port: 12345, mode: 'test' }); console.log(JSON.stringify(conf, null, 2)); ``` You also have a file `config.json`, with these contents: ``` { "port": 9000, "foo": "from config json", "something": "else" } ``` And a file `.myapprc` in the same folder, with these contents: ``` { "port": "3001", "foo": "bar" } ``` Here is the expected output from various commands: `node .` ``` { "port": "3001", "mode": "test", "foo": "bar", "_": [], "configs": [ "/Users/stephen/repos/conftest/.myapprc" ], "config": "/Users/stephen/repos/conftest/.myapprc" } ``` *Default `mode` from hard-coded object is retained, but port is overridden by `.myapprc` file (automatically found based on appname match), and `foo` is added.* `node . --foo baz` ``` { "port": "3001", "mode": "test", "foo": "baz", "_": [], "configs": [ "/Users/stephen/repos/conftest/.myapprc" ], "config": "/Users/stephen/repos/conftest/.myapprc" } ``` *Same result as above but `foo` is overridden because command-line arguments take precedence over `.myapprc` file.* `node . --foo barbar --config config.json` ``` { "port": 9000, "mode": "test", "foo": "barbar", "something": "else", "_": [], "config": "config.json", "configs": [ "/Users/stephen/repos/conftest/.myapprc", "config.json" ] } ``` *Now the `port` comes from the `config.json` file specified (overriding the value from `.myapprc`), and `foo` value is overriden by command-line despite also being specified in the `config.json` file.* ## Advanced Usage #### Pass in your own `argv` You may pass in your own `argv` as the third argument to `rc`. This is in case you want to [use your own command-line opts parser](https://github.com/dominictarr/rc/pull/12). ```javascript require('rc')(appname, defaults, customArgvParser); ``` ## Pass in your own parser If you have a special need to use a non-standard parser, you can do so by passing in the parser as the 4th argument. (leave the 3rd as null to get the default args parser) ```javascript require('rc')(appname, defaults, null, parser); ``` This may also be used to force a more strict format, such as strict, valid JSON only. ## Note on Performance `rc` is running `fs.statSync`-- so make sure you don't use it in a hot code path (e.g. a request handler) ## License Multi-licensed under the two-clause BSD License, MIT License, or Apache License, version 2.0 # registry-auth-token [](http://browsenpm.org/package/registry-auth-token)[](https://travis-ci.org/rexxars/registry-auth-token) Get the auth token set for an npm registry from `.npmrc`. Also allows fetching the configured registry URL for a given npm scope. ## Installing ``` npm install --save registry-auth-token ``` ## Usage Returns an object containing `token` and `type`, or `undefined` if no token can be found. `type` can be either `Bearer` or `Basic`. ```js var getAuthToken = require('registry-auth-token') var getRegistryUrl = require('registry-auth-token/registry-url') // Get auth token and type for default `registry` set in `.npmrc` console.log(getAuthToken()) // {token: 'someToken', type: 'Bearer'} // Get auth token for a specific registry URL console.log(getAuthToken('//registry.foo.bar')) // Find the registry auth token for a given URL (with deep path): // If registry is at `//some.host/registry` // URL passed is `//some.host/registry/deep/path` // Will find token the closest matching path; `//some.host/registry` console.log(getAuthToken('//some.host/registry/deep/path', {recursive: true})) // Find the configured registry url for scope `@foobar`. // Falls back to the global registry if not defined. console.log(getRegistryUrl('@foobar')) // Use the npm config that is passed in console.log(getRegistryUrl('http://registry.foobar.eu/', { npmrc: { 'registry': 'http://registry.foobar.eu/', '//registry.foobar.eu/:_authToken': 'qar' } })) ``` ## Return value ```js // If auth info can be found: {token: 'someToken', type: 'Bearer'} // Or: {token: 'someOtherToken', type: 'Basic'} // Or, if nothing is found: undefined ``` ## Security Please be careful when using this. Leaking your auth token is dangerous. ## License MIT-licensed. See LICENSE. # minipass A _very_ minimal implementation of a [PassThrough stream](https://nodejs.org/api/stream.html#stream_class_stream_passthrough) [It's very fast](https://docs.google.com/spreadsheets/d/1oObKSrVwLX_7Ut4Z6g3fZW-AX1j1-k6w-cDsrkaSbHM/edit#gid=0) for objects, strings, and buffers. Supports `pipe()`ing (including multi-`pipe()` and backpressure transmission), buffering data until either a `data` event handler or `pipe()` is added (so you don't lose the first chunk), and most other cases where PassThrough is a good idea. There is a `read()` method, but it's much more efficient to consume data from this stream via `'data'` events or by calling `pipe()` into some other stream. Calling `read()` requires the buffer to be flattened in some cases, which requires copying memory. There is also no `unpipe()` method. Once you start piping, there is no stopping it! If you set `objectMode: true` in the options, then whatever is written will be emitted. Otherwise, it'll do a minimal amount of Buffer copying to ensure proper Streams semantics when `read(n)` is called. `objectMode` can also be set by doing `stream.objectMode = true`, or by writing any non-string/non-buffer data. `objectMode` cannot be set to false once it is set. This is not a `through` or `through2` stream. It doesn't transform the data, it just passes it right through. If you want to transform the data, extend the class, and override the `write()` method. Once you're done transforming the data however you want, call `super.write()` with the transform output. For some examples of streams that extend Minipass in various ways, check out: - [minizlib](http://npm.im/minizlib) - [fs-minipass](http://npm.im/fs-minipass) - [tar](http://npm.im/tar) - [minipass-collect](http://npm.im/minipass-collect) - [minipass-flush](http://npm.im/minipass-flush) - [minipass-pipeline](http://npm.im/minipass-pipeline) - [tap](http://npm.im/tap) - [tap-parser](http://npm.im/tap-parser) - [treport](http://npm.im/treport) - [minipass-fetch](http://npm.im/minipass-fetch) - [pacote](http://npm.im/pacote) - [make-fetch-happen](http://npm.im/make-fetch-happen) - [cacache](http://npm.im/cacache) - [ssri](http://npm.im/ssri) - [npm-registry-fetch](http://npm.im/npm-registry-fetch) - [minipass-json-stream](http://npm.im/minipass-json-stream) - [minipass-sized](http://npm.im/minipass-sized) ## Differences from Node.js Streams There are several things that make Minipass streams different from (and in some ways superior to) Node.js core streams. Please read these caveats if you are familiar with node-core streams and intend to use Minipass streams in your programs. ### Timing Minipass streams are designed to support synchronous use-cases. Thus, data is emitted as soon as it is available, always. It is buffered until read, but no longer. Another way to look at it is that Minipass streams are exactly as synchronous as the logic that writes into them. This can be surprising if your code relies on `PassThrough.write()` always providing data on the next tick rather than the current one, or being able to call `resume()` and not have the entire buffer disappear immediately. However, without this synchronicity guarantee, there would be no way for Minipass to achieve the speeds it does, or support the synchronous use cases that it does. Simply put, waiting takes time. This non-deferring approach makes Minipass streams much easier to reason about, especially in the context of Promises and other flow-control mechanisms. ### No High/Low Water Marks Node.js core streams will optimistically fill up a buffer, returning `true` on all writes until the limit is hit, even if the data has nowhere to go. Then, they will not attempt to draw more data in until the buffer size dips below a minimum value. Minipass streams are much simpler. The `write()` method will return `true` if the data has somewhere to go (which is to say, given the timing guarantees, that the data is already there by the time `write()` returns). If the data has nowhere to go, then `write()` returns false, and the data sits in a buffer, to be drained out immediately as soon as anyone consumes it. ### Hazards of Buffering (or: Why Minipass Is So Fast) Since data written to a Minipass stream is immediately written all the way through the pipeline, and `write()` always returns true/false based on whether the data was fully flushed, backpressure is communicated immediately to the upstream caller. This minimizes buffering. Consider this case: ```js const {PassThrough} = require('stream') const p1 = new PassThrough({ highWaterMark: 1024 }) const p2 = new PassThrough({ highWaterMark: 1024 }) const p3 = new PassThrough({ highWaterMark: 1024 }) const p4 = new PassThrough({ highWaterMark: 1024 }) p1.pipe(p2).pipe(p3).pipe(p4) p4.on('data', () => console.log('made it through')) // this returns false and buffers, then writes to p2 on next tick (1) // p2 returns false and buffers, pausing p1, then writes to p3 on next tick (2) // p3 returns false and buffers, pausing p2, then writes to p4 on next tick (3) // p4 returns false and buffers, pausing p3, then emits 'data' and 'drain' // on next tick (4) // p3 sees p4's 'drain' event, and calls resume(), emitting 'resume' and // 'drain' on next tick (5) // p2 sees p3's 'drain', calls resume(), emits 'resume' and 'drain' on next tick (6) // p1 sees p2's 'drain', calls resume(), emits 'resume' and 'drain' on next // tick (7) p1.write(Buffer.alloc(2048)) // returns false ``` Along the way, the data was buffered and deferred at each stage, and multiple event deferrals happened, for an unblocked pipeline where it was perfectly safe to write all the way through! Furthermore, setting a `highWaterMark` of `1024` might lead someone reading the code to think an advisory maximum of 1KiB is being set for the pipeline. However, the actual advisory buffering level is the _sum_ of `highWaterMark` values, since each one has its own bucket. Consider the Minipass case: ```js const m1 = new Minipass() const m2 = new Minipass() const m3 = new Minipass() const m4 = new Minipass() m1.pipe(m2).pipe(m3).pipe(m4) m4.on('data', () => console.log('made it through')) // m1 is flowing, so it writes the data to m2 immediately // m2 is flowing, so it writes the data to m3 immediately // m3 is flowing, so it writes the data to m4 immediately // m4 is flowing, so it fires the 'data' event immediately, returns true // m4's write returned true, so m3 is still flowing, returns true // m3's write returned true, so m2 is still flowing, returns true // m2's write returned true, so m1 is still flowing, returns true // No event deferrals or buffering along the way! m1.write(Buffer.alloc(2048)) // returns true ``` It is extremely unlikely that you _don't_ want to buffer any data written, or _ever_ buffer data that can be flushed all the way through. Neither node-core streams nor Minipass ever fail to buffer written data, but node-core streams do a lot of unnecessary buffering and pausing. As always, the faster implementation is the one that does less stuff and waits less time to do it. ### Immediately emit `end` for empty streams (when not paused) If a stream is not paused, and `end()` is called before writing any data into it, then it will emit `end` immediately. If you have logic that occurs on the `end` event which you don't want to potentially happen immediately (for example, closing file descriptors, moving on to the next entry in an archive parse stream, etc.) then be sure to call `stream.pause()` on creation, and then `stream.resume()` once you are ready to respond to the `end` event. ### Emit `end` When Asked One hazard of immediately emitting `'end'` is that you may not yet have had a chance to add a listener. In order to avoid this hazard, Minipass streams safely re-emit the `'end'` event if a new listener is added after `'end'` has been emitted. Ie, if you do `stream.on('end', someFunction)`, and the stream has already emitted `end`, then it will call the handler right away. (You can think of this somewhat like attaching a new `.then(fn)` to a previously-resolved Promise.) To prevent calling handlers multiple times who would not expect multiple ends to occur, all listeners are removed from the `'end'` event whenever it is emitted. ### Impact of "immediate flow" on Tee-streams A "tee stream" is a stream piping to multiple destinations: ```js const tee = new Minipass() t.pipe(dest1) t.pipe(dest2) t.write('foo') // goes to both destinations ``` Since Minipass streams _immediately_ process any pending data through the pipeline when a new pipe destination is added, this can have surprising effects, especially when a stream comes in from some other function and may or may not have data in its buffer. ```js // WARNING! WILL LOSE DATA! const src = new Minipass() src.write('foo') src.pipe(dest1) // 'foo' chunk flows to dest1 immediately, and is gone src.pipe(dest2) // gets nothing! ``` The solution is to create a dedicated tee-stream junction that pipes to both locations, and then pipe to _that_ instead. ```js // Safe example: tee to both places const src = new Minipass() src.write('foo') const tee = new Minipass() tee.pipe(dest1) tee.pipe(dest2) src.pipe(tee) // tee gets 'foo', pipes to both locations ``` The same caveat applies to `on('data')` event listeners. The first one added will _immediately_ receive all of the data, leaving nothing for the second: ```js // WARNING! WILL LOSE DATA! const src = new Minipass() src.write('foo') src.on('data', handler1) // receives 'foo' right away src.on('data', handler2) // nothing to see here! ``` Using a dedicated tee-stream can be used in this case as well: ```js // Safe example: tee to both data handlers const src = new Minipass() src.write('foo') const tee = new Minipass() tee.on('data', handler1) tee.on('data', handler2) src.pipe(tee) ``` ## USAGE It's a stream! Use it like a stream and it'll most likely do what you want. ```js const Minipass = require('minipass') const mp = new Minipass(options) // optional: { encoding, objectMode } mp.write('foo') mp.pipe(someOtherStream) mp.end('bar') ``` ### OPTIONS * `encoding` How would you like the data coming _out_ of the stream to be encoded? Accepts any values that can be passed to `Buffer.toString()`. * `objectMode` Emit data exactly as it comes in. This will be flipped on by default if you write() something other than a string or Buffer at any point. Setting `objectMode: true` will prevent setting any encoding value. ### API Implements the user-facing portions of Node.js's `Readable` and `Writable` streams. ### Methods * `write(chunk, [encoding], [callback])` - Put data in. (Note that, in the base Minipass class, the same data will come out.) Returns `false` if the stream will buffer the next write, or true if it's still in "flowing" mode. * `end([chunk, [encoding]], [callback])` - Signal that you have no more data to write. This will queue an `end` event to be fired when all the data has been consumed. * `setEncoding(encoding)` - Set the encoding for data coming of the stream. This can only be done once. * `pause()` - No more data for a while, please. This also prevents `end` from being emitted for empty streams until the stream is resumed. * `resume()` - Resume the stream. If there's data in the buffer, it is all discarded. Any buffered events are immediately emitted. * `pipe(dest)` - Send all output to the stream provided. There is no way to unpipe. When data is emitted, it is immediately written to any and all pipe destinations. * `on(ev, fn)`, `emit(ev, fn)` - Minipass streams are EventEmitters. Some events are given special treatment, however. (See below under "events".) * `promise()` - Returns a Promise that resolves when the stream emits `end`, or rejects if the stream emits `error`. * `collect()` - Return a Promise that resolves on `end` with an array containing each chunk of data that was emitted, or rejects if the stream emits `error`. Note that this consumes the stream data. * `concat()` - Same as `collect()`, but concatenates the data into a single Buffer object. Will reject the returned promise if the stream is in objectMode, or if it goes into objectMode by the end of the data. * `read(n)` - Consume `n` bytes of data out of the buffer. If `n` is not provided, then consume all of it. If `n` bytes are not available, then it returns null. **Note** consuming streams in this way is less efficient, and can lead to unnecessary Buffer copying. * `destroy([er])` - Destroy the stream. If an error is provided, then an `'error'` event is emitted. If the stream has a `close()` method, and has not emitted a `'close'` event yet, then `stream.close()` will be called. Any Promises returned by `.promise()`, `.collect()` or `.concat()` will be rejected. After being destroyed, writing to the stream will emit an error. No more data will be emitted if the stream is destroyed, even if it was previously buffered. ### Properties * `bufferLength` Read-only. Total number of bytes buffered, or in the case of objectMode, the total number of objects. * `encoding` The encoding that has been set. (Setting this is equivalent to calling `setEncoding(enc)` and has the same prohibition against setting multiple times.) * `flowing` Read-only. Boolean indicating whether a chunk written to the stream will be immediately emitted. * `emittedEnd` Read-only. Boolean indicating whether the end-ish events (ie, `end`, `prefinish`, `finish`) have been emitted. Note that listening on any end-ish event will immediateyl re-emit it if it has already been emitted. * `writable` Whether the stream is writable. Default `true`. Set to `false` when `end()` * `readable` Whether the stream is readable. Default `true`. * `buffer` A [yallist](http://npm.im/yallist) linked list of chunks written to the stream that have not yet been emitted. (It's probably a bad idea to mess with this.) * `pipes` A [yallist](http://npm.im/yallist) linked list of streams that this stream is piping into. (It's probably a bad idea to mess with this.) * `destroyed` A getter that indicates whether the stream was destroyed. * `paused` True if the stream has been explicitly paused, otherwise false. * `objectMode` Indicates whether the stream is in `objectMode`. Once set to `true`, it cannot be set to `false`. ### Events * `data` Emitted when there's data to read. Argument is the data to read. This is never emitted while not flowing. If a listener is attached, that will resume the stream. * `end` Emitted when there's no more data to read. This will be emitted immediately for empty streams when `end()` is called. If a listener is attached, and `end` was already emitted, then it will be emitted again. All listeners are removed when `end` is emitted. * `prefinish` An end-ish event that follows the same logic as `end` and is emitted in the same conditions where `end` is emitted. Emitted after `'end'`. * `finish` An end-ish event that follows the same logic as `end` and is emitted in the same conditions where `end` is emitted. Emitted after `'prefinish'`. * `close` An indication that an underlying resource has been released. Minipass does not emit this event, but will defer it until after `end` has been emitted, since it throws off some stream libraries otherwise. * `drain` Emitted when the internal buffer empties, and it is again suitable to `write()` into the stream. * `readable` Emitted when data is buffered and ready to be read by a consumer. * `resume` Emitted when stream changes state from buffering to flowing mode. (Ie, when `resume` is called, `pipe` is called, or a `data` event listener is added.) ### Static Methods * `Minipass.isStream(stream)` Returns `true` if the argument is a stream, and false otherwise. To be considered a stream, the object must be either an instance of Minipass, or an EventEmitter that has either a `pipe()` method, or both `write()` and `end()` methods. (Pretty much any stream in node-land will return `true` for this.) ## EXAMPLES Here are some examples of things you can do with Minipass streams. ### simple "are you done yet" promise ```js mp.promise().then(() => { // stream is finished }, er => { // stream emitted an error }) ``` ### collecting ```js mp.collect().then(all => { // all is an array of all the data emitted // encoding is supported in this case, so // so the result will be a collection of strings if // an encoding is specified, or buffers/objects if not. // // In an async function, you may do // const data = await stream.collect() }) ``` ### collecting into a single blob This is a bit slower because it concatenates the data into one chunk for you, but if you're going to do it yourself anyway, it's convenient this way: ```js mp.concat().then(onebigchunk => { // onebigchunk is a string if the stream // had an encoding set, or a buffer otherwise. }) ``` ### iteration You can iterate over streams synchronously or asynchronously in platforms that support it. Synchronous iteration will end when the currently available data is consumed, even if the `end` event has not been reached. In string and buffer mode, the data is concatenated, so unless multiple writes are occurring in the same tick as the `read()`, sync iteration loops will generally only have a single iteration. To consume chunks in this way exactly as they have been written, with no flattening, create the stream with the `{ objectMode: true }` option. ```js const mp = new Minipass({ objectMode: true }) mp.write('a') mp.write('b') for (let letter of mp) { console.log(letter) // a, b } mp.write('c') mp.write('d') for (let letter of mp) { console.log(letter) // c, d } mp.write('e') mp.end() for (let letter of mp) { console.log(letter) // e } for (let letter of mp) { console.log(letter) // nothing } ``` Asynchronous iteration will continue until the end event is reached, consuming all of the data. ```js const mp = new Minipass({ encoding: 'utf8' }) // some source of some data let i = 5 const inter = setInterval(() => { if (i-- > 0) mp.write(Buffer.from('foo\n', 'utf8')) else { mp.end() clearInterval(inter) } }, 100) // consume the data with asynchronous iteration async function consume () { for await (let chunk of mp) { console.log(chunk) } return 'ok' } consume().then(res => console.log(res)) // logs `foo\n` 5 times, and then `ok` ``` ### subclass that `console.log()`s everything written into it ```js class Logger extends Minipass { write (chunk, encoding, callback) { console.log('WRITE', chunk, encoding) return super.write(chunk, encoding, callback) } end (chunk, encoding, callback) { console.log('END', chunk, encoding) return super.end(chunk, encoding, callback) } } someSource.pipe(new Logger()).pipe(someDest) ``` ### same thing, but using an inline anonymous class ```js // js classes are fun someSource .pipe(new (class extends Minipass { emit (ev, ...data) { // let's also log events, because debugging some weird thing console.log('EMIT', ev) return super.emit(ev, ...data) } write (chunk, encoding, callback) { console.log('WRITE', chunk, encoding) return super.write(chunk, encoding, callback) } end (chunk, encoding, callback) { console.log('END', chunk, encoding) return super.end(chunk, encoding, callback) } })) .pipe(someDest) ``` ### subclass that defers 'end' for some reason ```js class SlowEnd extends Minipass { emit (ev, ...args) { if (ev === 'end') { console.log('going to end, hold on a sec') setTimeout(() => { console.log('ok, ready to end now') super.emit('end', ...args) }, 100) } else { return super.emit(ev, ...args) } } } ``` ### transform that creates newline-delimited JSON ```js class NDJSONEncode extends Minipass { write (obj, cb) { try { // JSON.stringify can throw, emit an error on that return super.write(JSON.stringify(obj) + '\n', 'utf8', cb) } catch (er) { this.emit('error', er) } } end (obj, cb) { if (typeof obj === 'function') { cb = obj obj = undefined } if (obj !== undefined) { this.write(obj) } return super.end(cb) } } ``` ### transform that parses newline-delimited JSON ```js class NDJSONDecode extends Minipass { constructor (options) { // always be in object mode, as far as Minipass is concerned super({ objectMode: true }) this._jsonBuffer = '' } write (chunk, encoding, cb) { if (typeof chunk === 'string' && typeof encoding === 'string' && encoding !== 'utf8') { chunk = Buffer.from(chunk, encoding).toString() } else if (Buffer.isBuffer(chunk)) chunk = chunk.toString() } if (typeof encoding === 'function') { cb = encoding } const jsonData = (this._jsonBuffer + chunk).split('\n') this._jsonBuffer = jsonData.pop() for (let i = 0; i < jsonData.length; i++) { try { // JSON.parse can throw, emit an error on that super.write(JSON.parse(jsonData[i])) } catch (er) { this.emit('error', er) continue } } if (cb) cb() } } ``` These files are compiled dot templates from dot folder. Do NOT edit them directly, edit the templates and run `npm run build` from main ajv folder. # fs-minipass Filesystem streams based on [minipass](http://npm.im/minipass). 4 classes are exported: - ReadStream - ReadStreamSync - WriteStream - WriteStreamSync When using `ReadStreamSync`, all of the data is made available immediately upon consuming the stream. Nothing is buffered in memory when the stream is constructed. If the stream is piped to a writer, then it will synchronously `read()` and emit data into the writer as fast as the writer can consume it. (That is, it will respect backpressure.) If you call `stream.read()` then it will read the entire file and return the contents. When using `WriteStreamSync`, every write is flushed to the file synchronously. If your writes all come in a single tick, then it'll write it all out in a single tick. It's as synchronous as you are. The async versions work much like their node builtin counterparts, with the exception of introducing significantly less Stream machinery overhead. ## USAGE It's just streams, you pipe them or read() them or write() to them. ```js const fsm = require('fs-minipass') const readStream = new fsm.ReadStream('file.txt') const writeStream = new fsm.WriteStream('output.txt') writeStream.write('some file header or whatever\n') readStream.pipe(writeStream) ``` ## ReadStream(path, options) Path string is required, but somewhat irrelevant if an open file descriptor is passed in as an option. Options: - `fd` Pass in a numeric file descriptor, if the file is already open. - `readSize` The size of reads to do, defaults to 16MB - `size` The size of the file, if known. Prevents zero-byte read() call at the end. - `autoClose` Set to `false` to prevent the file descriptor from being closed when the file is done being read. ## WriteStream(path, options) Path string is required, but somewhat irrelevant if an open file descriptor is passed in as an option. Options: - `fd` Pass in a numeric file descriptor, if the file is already open. - `mode` The mode to create the file with. Defaults to `0o666`. - `start` The position in the file to start reading. If not specified, then the file will start writing at position zero, and be truncated by default. - `autoClose` Set to `false` to prevent the file descriptor from being closed when the stream is ended. - `flags` Flags to use when opening the file. Irrelevant if `fd` is passed in, since file won't be opened in that case. Defaults to `'a'` if a `pos` is specified, or `'w'` otherwise. ## assemblyscript-temporal An implementation of temporal within AssemblyScript, with an initial focus on non-timezone-aware classes and functionality. ### Why? AssemblyScript has minimal `Date` support, however, the JS Date API itself is terrible and people tend not to use it that often. As a result libraries like moment / luxon have become staple replacements. However, there is now a [relatively mature TC39 proposal](https://github.com/tc39/proposal-temporal) that adds greatly improved date support to JS. The goal of this project is to implement Temporal for AssemblyScript. ### Usage This library currently supports the following types: #### `PlainDateTime` A `PlainDateTime` represents a calendar date and wall-clock time that does not carry time zone information, e.g. December 7th, 1995 at 3:00 PM (in the Gregorian calendar). For detailed documentation see the [TC39 Temporal proposal website](https://tc39.es/proposal-temporal/docs/plaindatetime.html), this implementation follows the specification as closely as possible. You can create a `PlainDateTime` from individual components, a string or an object literal: ```javascript datetime = new PlainDateTime(1976, 11, 18, 15, 23, 30, 123, 456, 789); datetime.year; // 2019; datetime.month; // 11; // ... datetime.nanosecond; // 789; datetime = PlainDateTime.from("1976-11-18T12:34:56"); datetime.toString(); // "1976-11-18T12:34:56" datetime = PlainDateTime.from({ year: 1966, month: 3, day: 3 }); datetime.toString(); // "1966-03-03T00:00:00" ``` There are various ways you can manipulate a date: ```javascript // use 'with' to copy a date but with various property values overriden datetime = new PlainDateTime(1976, 11, 18, 15, 23, 30, 123, 456, 789); datetime.with({ year: 2019 }).toString(); // "2019-11-18T15:23:30.123456789" // use 'add' or 'substract' to add / subtract a duration datetime = PlainDateTime.from("2020-01-12T15:00"); datetime.add({ months: 1 }).toString(); // "2020-02-12T15:00:00"); // add / subtract support Duration objects or object literals datetime.add(new Duration(1)).toString(); // "2021-01-12T15:00:00"); ``` You can compare dates and check for equality ```javascript dt1 = PlainDateTime.from("1976-11-18"); dt2 = PlainDateTime.from("2019-10-29"); PlainDateTime.compare(dt1, dt1); // 0 PlainDateTime.compare(dt1, dt2); // -1 dt1.equals(dt1); // true ``` Currently `PlainDateTime` only supports the ISO 8601 (Gregorian) calendar. #### `PlainDate` A `PlainDate` object represents a calendar date that is not associated with a particular time or time zone, e.g. August 24th, 2006. For detailed documentation see the [TC39 Temporal proposal website](https://tc39.es/proposal-temporal/docs/plaindate.html), this implementation follows the specification as closely as possible. The `PlainDate` API is almost identical to `PlainDateTime`, so see above for API usage examples. #### `PlainTime` A `PlainTime` object represents a wall-clock time that is not associated with a particular date or time zone, e.g. 7:39 PM. For detailed documentation see the [TC39 Temporal proposal website](https://tc39.es/proposal-temporal/docs/plaintime.html), this implementation follows the specification as closely as possible. The `PlainTime` API is almost identical to `PlainDateTime`, so see above for API usage examples. #### `PlainMonthDay` A date without a year component. This is useful to express things like "Bastille Day is on the 14th of July". For detailed documentation see the [TC39 Temporal proposal website](https://tc39.es/proposal-temporal/docs/plainmonthday.html) , this implementation follows the specification as closely as possible. ```javascript const monthDay = PlainMonthDay.from({ month: 7, day: 14 }); // => 07-14 const date = monthDay.toPlainDate({ year: 2030 }); // => 2030-07-14 date.dayOfWeek; // => 7 ``` The `PlainMonthDay` API is almost identical to `PlainDateTime`, so see above for more API usage examples. #### `PlainYearMonth` A date without a day component. This is useful to express things like "the October 2020 meeting". For detailed documentation see the [TC39 Temporal proposal website](https://tc39.es/proposal-temporal/docs/plainyearmonth.html) , this implementation follows the specification as closely as possible. The `PlainYearMonth` API is almost identical to `PlainDateTime`, so see above for API usage examples. #### `now` The `now` object has several methods which give information about the current time and date. ```javascript dateTime = now.plainDateTimeISO(); dateTime.toString(); // 2021-04-01T12:05:47.357 ``` ## Contributing This project is open source, MIT licensed and your contributions are very much welcomed. There is a [brief document that outlines implementation progress and priorities](./development.md). # is-glob [](https://www.npmjs.com/package/is-glob) [](https://npmjs.org/package/is-glob) [](https://npmjs.org/package/is-glob) [](https://github.com/micromatch/is-glob/actions) > Returns `true` if the given string looks like a glob pattern or an extglob pattern. This makes it easy to create code that only uses external modules like node-glob when necessary, resulting in much faster code execution and initialization time, and a better user experience. Please consider following this project's author, [Jon Schlinkert](https://github.com/jonschlinkert), and consider starring the project to show your :heart: and support. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save is-glob ``` You might also be interested in [is-valid-glob](https://github.com/jonschlinkert/is-valid-glob) and [has-glob](https://github.com/jonschlinkert/has-glob). ## Usage ```js var isGlob = require('is-glob'); ``` ### Default behavior **True** Patterns that have glob characters or regex patterns will return `true`: ```js isGlob('!foo.js'); isGlob('*.js'); isGlob('**/abc.js'); isGlob('abc/*.js'); isGlob('abc/(aaa|bbb).js'); isGlob('abc/[a-z].js'); isGlob('abc/{a,b}.js'); //=> true ``` Extglobs ```js isGlob('abc/@(a).js'); isGlob('abc/!(a).js'); isGlob('abc/+(a).js'); isGlob('abc/*(a).js'); isGlob('abc/?(a).js'); //=> true ``` **False** Escaped globs or extglobs return `false`: ```js isGlob('abc/\\@(a).js'); isGlob('abc/\\!(a).js'); isGlob('abc/\\+(a).js'); isGlob('abc/\\*(a).js'); isGlob('abc/\\?(a).js'); isGlob('\\!foo.js'); isGlob('\\*.js'); isGlob('\\*\\*/abc.js'); isGlob('abc/\\*.js'); isGlob('abc/\\(aaa|bbb).js'); isGlob('abc/\\[a-z].js'); isGlob('abc/\\{a,b}.js'); //=> false ``` Patterns that do not have glob patterns return `false`: ```js isGlob('abc.js'); isGlob('abc/def/ghi.js'); isGlob('foo.js'); isGlob('abc/@.js'); isGlob('abc/+.js'); isGlob('abc/?.js'); isGlob(); isGlob(null); //=> false ``` Arrays are also `false` (If you want to check if an array has a glob pattern, use [has-glob](https://github.com/jonschlinkert/has-glob)): ```js isGlob(['**/*.js']); isGlob(['foo.js']); //=> false ``` ### Option strict When `options.strict === false` the behavior is less strict in determining if a pattern is a glob. Meaning that some patterns that would return `false` may return `true`. This is done so that matching libraries like [micromatch](https://github.com/micromatch/micromatch) have a chance at determining if the pattern is a glob or not. **True** Patterns that have glob characters or regex patterns will return `true`: ```js isGlob('!foo.js', {strict: false}); isGlob('*.js', {strict: false}); isGlob('**/abc.js', {strict: false}); isGlob('abc/*.js', {strict: false}); isGlob('abc/(aaa|bbb).js', {strict: false}); isGlob('abc/[a-z].js', {strict: false}); isGlob('abc/{a,b}.js', {strict: false}); //=> true ``` Extglobs ```js isGlob('abc/@(a).js', {strict: false}); isGlob('abc/!(a).js', {strict: false}); isGlob('abc/+(a).js', {strict: false}); isGlob('abc/*(a).js', {strict: false}); isGlob('abc/?(a).js', {strict: false}); //=> true ``` **False** Escaped globs or extglobs return `false`: ```js isGlob('\\!foo.js', {strict: false}); isGlob('\\*.js', {strict: false}); isGlob('\\*\\*/abc.js', {strict: false}); isGlob('abc/\\*.js', {strict: false}); isGlob('abc/\\(aaa|bbb).js', {strict: false}); isGlob('abc/\\[a-z].js', {strict: false}); isGlob('abc/\\{a,b}.js', {strict: false}); //=> false ``` ## About <details> <summary><strong>Contributing</strong></summary> Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). </details> <details> <summary><strong>Running Tests</strong></summary> Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` </details> <details> <summary><strong>Building docs</strong></summary> _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` </details> ### Related projects You might also be interested in these projects: * [assemble](https://www.npmjs.com/package/assemble): Get the rocks out of your socks! Assemble makes you fast at creating web projects… [more](https://github.com/assemble/assemble) | [homepage](https://github.com/assemble/assemble "Get the rocks out of your socks! Assemble makes you fast at creating web projects. Assemble is used by thousands of projects for rapid prototyping, creating themes, scaffolds, boilerplates, e-books, UI components, API documentation, blogs, building websit") * [base](https://www.npmjs.com/package/base): Framework for rapidly creating high quality, server-side node.js applications, using plugins like building blocks | [homepage](https://github.com/node-base/base "Framework for rapidly creating high quality, server-side node.js applications, using plugins like building blocks") * [update](https://www.npmjs.com/package/update): Be scalable! Update is a new, open source developer framework and CLI for automating updates… [more](https://github.com/update/update) | [homepage](https://github.com/update/update "Be scalable! Update is a new, open source developer framework and CLI for automating updates of any kind in code projects.") * [verb](https://www.npmjs.com/package/verb): Documentation generator for GitHub projects. Verb is extremely powerful, easy to use, and is used… [more](https://github.com/verbose/verb) | [homepage](https://github.com/verbose/verb "Documentation generator for GitHub projects. Verb is extremely powerful, easy to use, and is used on hundreds of projects of all sizes to generate everything from API docs to readmes.") ### Contributors | **Commits** | **Contributor** | | --- | --- | | 47 | [jonschlinkert](https://github.com/jonschlinkert) | | 5 | [doowb](https://github.com/doowb) | | 1 | [phated](https://github.com/phated) | | 1 | [danhper](https://github.com/danhper) | | 1 | [paulmillr](https://github.com/paulmillr) | ### Author **Jon Schlinkert** * [GitHub Profile](https://github.com/jonschlinkert) * [Twitter Profile](https://twitter.com/jonschlinkert) * [LinkedIn Profile](https://linkedin.com/in/jonschlinkert) ### License Copyright © 2019, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT License](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.8.0, on March 27, 2019._ ### Estraverse [](http://travis-ci.org/estools/estraverse) Estraverse ([estraverse](http://github.com/estools/estraverse)) is [ECMAScript](http://www.ecma-international.org/publications/standards/Ecma-262.htm) traversal functions from [esmangle project](http://github.com/estools/esmangle). ### Documentation You can find usage docs at [wiki page](https://github.com/estools/estraverse/wiki/Usage). ### Example Usage The following code will output all variables declared at the root of a file. ```javascript estraverse.traverse(ast, { enter: function (node, parent) { if (node.type == 'FunctionExpression' || node.type == 'FunctionDeclaration') return estraverse.VisitorOption.Skip; }, leave: function (node, parent) { if (node.type == 'VariableDeclarator') console.log(node.id.name); } }); ``` We can use `this.skip`, `this.remove` and `this.break` functions instead of using Skip, Remove and Break. ```javascript estraverse.traverse(ast, { enter: function (node) { this.break(); } }); ``` And estraverse provides `estraverse.replace` function. When returning node from `enter`/`leave`, current node is replaced with it. ```javascript result = estraverse.replace(tree, { enter: function (node) { // Replace it with replaced. if (node.type === 'Literal') return replaced; } }); ``` By passing `visitor.keys` mapping, we can extend estraverse traversing functionality. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Extending the existing traversing rules. keys: { // TargetNodeName: [ 'keys', 'containing', 'the', 'other', '**node**' ] TestExpression: ['argument'] } }); ``` By passing `visitor.fallback` option, we can control the behavior when encountering unknown nodes. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Iterating the child **nodes** of unknown nodes. fallback: 'iteration' }); ``` When `visitor.fallback` is a function, we can determine which keys to visit on each node. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; estraverse.traverse(tree, { enter: function (node) { }, // Skip the `argument` property of each node fallback: function(node) { return Object.keys(node).filter(function(key) { return key !== 'argument'; }); } }); ``` ### License Copyright (C) 2012-2016 [Yusuke Suzuki](http://github.com/Constellation) (twitter: [@Constellation](http://twitter.com/Constellation)) and other contributors. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # debug [](https://travis-ci.org/debug-js/debug) [](https://coveralls.io/github/debug-js/debug?branch=master) [](https://visionmedia-community-slackin.now.sh/) [](#backers) [](#sponsors) <img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png"> A tiny JavaScript debugging utility modelled after Node.js core's debugging technique. Works in Node.js and web browsers. ## Installation ```bash $ npm install debug ``` ## Usage `debug` exposes a function; simply pass this function the name of your module, and it will return a decorated version of `console.error` for you to pass debug statements to. This will allow you to toggle the debug output for different parts of your module as well as the module as a whole. Example [_app.js_](./examples/node/app.js): ```js var debug = require('debug')('http') , http = require('http') , name = 'My App'; // fake app debug('booting %o', name); http.createServer(function(req, res){ debug(req.method + ' ' + req.url); res.end('hello\n'); }).listen(3000, function(){ debug('listening'); }); // fake worker of some kind require('./worker'); ``` Example [_worker.js_](./examples/node/worker.js): ```js var a = require('debug')('worker:a') , b = require('debug')('worker:b'); function work() { a('doing lots of uninteresting work'); setTimeout(work, Math.random() * 1000); } work(); function workb() { b('doing some work'); setTimeout(workb, Math.random() * 2000); } workb(); ``` The `DEBUG` environment variable is then used to enable these based on space or comma-delimited names. Here are some examples: <img width="647" alt="screen shot 2017-08-08 at 12 53 04 pm" src="https://user-images.githubusercontent.com/71256/29091703-a6302cdc-7c38-11e7-8304-7c0b3bc600cd.png"> <img width="647" alt="screen shot 2017-08-08 at 12 53 38 pm" src="https://user-images.githubusercontent.com/71256/29091700-a62a6888-7c38-11e7-800b-db911291ca2b.png"> <img width="647" alt="screen shot 2017-08-08 at 12 53 25 pm" src="https://user-images.githubusercontent.com/71256/29091701-a62ea114-7c38-11e7-826a-2692bedca740.png"> #### Windows command prompt notes ##### CMD On Windows the environment variable is set using the `set` command. ```cmd set DEBUG=*,-not_this ``` Example: ```cmd set DEBUG=* & node app.js ``` ##### PowerShell (VS Code default) PowerShell uses different syntax to set environment variables. ```cmd $env:DEBUG = "*,-not_this" ``` Example: ```cmd $env:DEBUG='app';node app.js ``` Then, run the program to be debugged as usual. npm script example: ```js "windowsDebug": "@powershell -Command $env:DEBUG='*';node app.js", ``` ## Namespace Colors Every debug instance has a color generated for it based on its namespace name. This helps when visually parsing the debug output to identify which debug instance a debug line belongs to. #### Node.js In Node.js, colors are enabled when stderr is a TTY. You also _should_ install the [`supports-color`](https://npmjs.org/supports-color) module alongside debug, otherwise debug will only use a small handful of basic colors. <img width="521" src="https://user-images.githubusercontent.com/71256/29092181-47f6a9e6-7c3a-11e7-9a14-1928d8a711cd.png"> #### Web Browser Colors are also enabled on "Web Inspectors" that understand the `%c` formatting option. These are WebKit web inspectors, Firefox ([since version 31](https://hacks.mozilla.org/2014/05/editable-box-model-multiple-selection-sublime-text-keys-much-more-firefox-developer-tools-episode-31/)) and the Firebug plugin for Firefox (any version). <img width="524" src="https://user-images.githubusercontent.com/71256/29092033-b65f9f2e-7c39-11e7-8e32-f6f0d8e865c1.png"> ## Millisecond diff When actively developing an application it can be useful to see when the time spent between one `debug()` call and the next. Suppose for example you invoke `debug()` before requesting a resource, and after as well, the "+NNNms" will show you how much time was spent between calls. <img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png"> When stdout is not a TTY, `Date#toISOString()` is used, making it more useful for logging the debug information as shown below: <img width="647" src="https://user-images.githubusercontent.com/71256/29091956-6bd78372-7c39-11e7-8c55-c948396d6edd.png"> ## Conventions If you're using this in one or more of your libraries, you _should_ use the name of your library so that developers may toggle debugging as desired without guessing names. If you have more than one debuggers you _should_ prefix them with your library name and use ":" to separate features. For example "bodyParser" from Connect would then be "connect:bodyParser". If you append a "*" to the end of your name, it will always be enabled regardless of the setting of the DEBUG environment variable. You can then use it for normal output as well as debug output. ## Wildcards The `*` character may be used as a wildcard. Suppose for example your library has debuggers named "connect:bodyParser", "connect:compress", "connect:session", instead of listing all three with `DEBUG=connect:bodyParser,connect:compress,connect:session`, you may simply do `DEBUG=connect:*`, or to run everything using this module simply use `DEBUG=*`. You can also exclude specific debuggers by prefixing them with a "-" character. For example, `DEBUG=*,-connect:*` would include all debuggers except those starting with "connect:". ## Environment Variables When running through Node.js, you can set a few environment variables that will change the behavior of the debug logging: | Name | Purpose | |-----------|-------------------------------------------------| | `DEBUG` | Enables/disables specific debugging namespaces. | | `DEBUG_HIDE_DATE` | Hide date from debug output (non-TTY). | | `DEBUG_COLORS`| Whether or not to use colors in the debug output. | | `DEBUG_DEPTH` | Object inspection depth. | | `DEBUG_SHOW_HIDDEN` | Shows hidden properties on inspected objects. | __Note:__ The environment variables beginning with `DEBUG_` end up being converted into an Options object that gets used with `%o`/`%O` formatters. See the Node.js documentation for [`util.inspect()`](https://nodejs.org/api/util.html#util_util_inspect_object_options) for the complete list. ## Formatters Debug uses [printf-style](https://wikipedia.org/wiki/Printf_format_string) formatting. Below are the officially supported formatters: | Formatter | Representation | |-----------|----------------| | `%O` | Pretty-print an Object on multiple lines. | | `%o` | Pretty-print an Object all on a single line. | | `%s` | String. | | `%d` | Number (both integer and float). | | `%j` | JSON. Replaced with the string '[Circular]' if the argument contains circular references. | | `%%` | Single percent sign ('%'). This does not consume an argument. | ### Custom formatters You can add custom formatters by extending the `debug.formatters` object. For example, if you wanted to add support for rendering a Buffer as hex with `%h`, you could do something like: ```js const createDebug = require('debug') createDebug.formatters.h = (v) => { return v.toString('hex') } // …elsewhere const debug = createDebug('foo') debug('this is hex: %h', new Buffer('hello world')) // foo this is hex: 68656c6c6f20776f726c6421 +0ms ``` ## Browser Support You can build a browser-ready script using [browserify](https://github.com/substack/node-browserify), or just use the [browserify-as-a-service](https://wzrd.in/) [build](https://wzrd.in/standalone/debug@latest), if you don't want to build it yourself. Debug's enable state is currently persisted by `localStorage`. Consider the situation shown below where you have `worker:a` and `worker:b`, and wish to debug both. You can enable this using `localStorage.debug`: ```js localStorage.debug = 'worker:*' ``` And then refresh the page. ```js a = debug('worker:a'); b = debug('worker:b'); setInterval(function(){ a('doing some work'); }, 1000); setInterval(function(){ b('doing some work'); }, 1200); ``` In Chromium-based web browsers (e.g. Brave, Chrome, and Electron), the JavaScript console will—by default—only show messages logged by `debug` if the "Verbose" log level is _enabled_. <img width="647" src="https://user-images.githubusercontent.com/7143133/152083257-29034707-c42c-4959-8add-3cee850e6fcf.png"> ## Output streams By default `debug` will log to stderr, however this can be configured per-namespace by overriding the `log` method: Example [_stdout.js_](./examples/node/stdout.js): ```js var debug = require('debug'); var error = debug('app:error'); // by default stderr is used error('goes to stderr!'); var log = debug('app:log'); // set this namespace to log via console.log log.log = console.log.bind(console); // don't forget to bind to console! log('goes to stdout'); error('still goes to stderr!'); // set all output to go via console.info // overrides all per-namespace log settings debug.log = console.info.bind(console); error('now goes to stdout via console.info'); log('still goes to stdout, but via console.info now'); ``` ## Extend You can simply extend debugger ```js const log = require('debug')('auth'); //creates new debug instance with extended namespace const logSign = log.extend('sign'); const logLogin = log.extend('login'); log('hello'); // auth hello logSign('hello'); //auth:sign hello logLogin('hello'); //auth:login hello ``` ## Set dynamically You can also enable debug dynamically by calling the `enable()` method : ```js let debug = require('debug'); console.log(1, debug.enabled('test')); debug.enable('test'); console.log(2, debug.enabled('test')); debug.disable(); console.log(3, debug.enabled('test')); ``` print : ``` 1 false 2 true 3 false ``` Usage : `enable(namespaces)` `namespaces` can include modes separated by a colon and wildcards. Note that calling `enable()` completely overrides previously set DEBUG variable : ``` $ DEBUG=foo node -e 'var dbg = require("debug"); dbg.enable("bar"); console.log(dbg.enabled("foo"))' => false ``` `disable()` Will disable all namespaces. The functions returns the namespaces currently enabled (and skipped). This can be useful if you want to disable debugging temporarily without knowing what was enabled to begin with. For example: ```js let debug = require('debug'); debug.enable('foo:*,-foo:bar'); let namespaces = debug.disable(); debug.enable(namespaces); ``` Note: There is no guarantee that the string will be identical to the initial enable string, but semantically they will be identical. ## Checking whether a debug target is enabled After you've created a debug instance, you can determine whether or not it is enabled by checking the `enabled` property: ```javascript const debug = require('debug')('http'); if (debug.enabled) { // do stuff... } ``` You can also manually toggle this property to force the debug instance to be enabled or disabled. ## Usage in child processes Due to the way `debug` detects if the output is a TTY or not, colors are not shown in child processes when `stderr` is piped. A solution is to pass the `DEBUG_COLORS=1` environment variable to the child process. For example: ```javascript worker = fork(WORKER_WRAP_PATH, [workerPath], { stdio: [ /* stdin: */ 0, /* stdout: */ 'pipe', /* stderr: */ 'pipe', 'ipc', ], env: Object.assign({}, process.env, { DEBUG_COLORS: 1 // without this settings, colors won't be shown }), }); worker.stderr.pipe(process.stderr, { end: false }); ``` ## Authors - TJ Holowaychuk - Nathan Rajlich - Andrew Rhyne - Josh Junon ## Backers Support us with a monthly donation and help us continue our activities. 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Copyright (c) 2018-2021 Josh Junon Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # minimatch A minimal matching utility. [](http://travis-ci.org/isaacs/minimatch) This is the matching library used internally by npm. It works by converting glob expressions into JavaScript `RegExp` objects. ## Usage ```javascript var minimatch = require("minimatch") minimatch("bar.foo", "*.foo") // true! minimatch("bar.foo", "*.bar") // false! minimatch("bar.foo", "*.+(bar|foo)", { debug: true }) // true, and noisy! ``` ## Features Supports these glob features: * Brace Expansion * Extended glob matching * "Globstar" `**` matching See: * `man sh` * `man bash` * `man 3 fnmatch` * `man 5 gitignore` ## Minimatch Class Create a minimatch object by instantiating the `minimatch.Minimatch` class. ```javascript var Minimatch = require("minimatch").Minimatch var mm = new Minimatch(pattern, options) ``` ### Properties * `pattern` The original pattern the minimatch object represents. * `options` The options supplied to the constructor. * `set` A 2-dimensional array of regexp or string expressions. Each row in the array corresponds to a brace-expanded pattern. Each item in the row corresponds to a single path-part. For example, the pattern `{a,b/c}/d` would expand to a set of patterns like: [ [ a, d ] , [ b, c, d ] ] If a portion of the pattern doesn't have any "magic" in it (that is, it's something like `"foo"` rather than `fo*o?`), then it will be left as a string rather than converted to a regular expression. * `regexp` Created by the `makeRe` method. A single regular expression expressing the entire pattern. This is useful in cases where you wish to use the pattern somewhat like `fnmatch(3)` with `FNM_PATH` enabled. * `negate` True if the pattern is negated. * `comment` True if the pattern is a comment. * `empty` True if the pattern is `""`. ### Methods * `makeRe` Generate the `regexp` member if necessary, and return it. Will return `false` if the pattern is invalid. * `match(fname)` Return true if the filename matches the pattern, or false otherwise. * `matchOne(fileArray, patternArray, partial)` Take a `/`-split filename, and match it against a single row in the `regExpSet`. This method is mainly for internal use, but is exposed so that it can be used by a glob-walker that needs to avoid excessive filesystem calls. All other methods are internal, and will be called as necessary. ### minimatch(path, pattern, options) Main export. Tests a path against the pattern using the options. ```javascript var isJS = minimatch(file, "*.js", { matchBase: true }) ``` ### minimatch.filter(pattern, options) Returns a function that tests its supplied argument, suitable for use with `Array.filter`. Example: ```javascript var javascripts = fileList.filter(minimatch.filter("*.js", {matchBase: true})) ``` ### minimatch.match(list, pattern, options) Match against the list of files, in the style of fnmatch or glob. If nothing is matched, and options.nonull is set, then return a list containing the pattern itself. ```javascript var javascripts = minimatch.match(fileList, "*.js", {matchBase: true})) ``` ### minimatch.makeRe(pattern, options) Make a regular expression object from the pattern. ## Options All options are `false` by default. ### debug Dump a ton of stuff to stderr. ### nobrace Do not expand `{a,b}` and `{1..3}` brace sets. ### noglobstar Disable `**` matching against multiple folder names. ### dot Allow patterns to match filenames starting with a period, even if the pattern does not explicitly have a period in that spot. Note that by default, `a/**/b` will **not** match `a/.d/b`, unless `dot` is set. ### noext Disable "extglob" style patterns like `+(a|b)`. ### nocase Perform a case-insensitive match. ### nonull When a match is not found by `minimatch.match`, return a list containing the pattern itself if this option is set. When not set, an empty list is returned if there are no matches. ### matchBase If set, then patterns without slashes will be matched against the basename of the path if it contains slashes. For example, `a?b` would match the path `/xyz/123/acb`, but not `/xyz/acb/123`. ### nocomment Suppress the behavior of treating `#` at the start of a pattern as a comment. ### nonegate Suppress the behavior of treating a leading `!` character as negation. ### flipNegate Returns from negate expressions the same as if they were not negated. (Ie, true on a hit, false on a miss.) ### partial Compare a partial path to a pattern. As long as the parts of the path that are present are not contradicted by the pattern, it will be treated as a match. This is useful in applications where you're walking through a folder structure, and don't yet have the full path, but want to ensure that you do not walk down paths that can never be a match. For example, ```js minimatch('/a/b', '/a/*/c/d', { partial: true }) // true, might be /a/b/c/d minimatch('/a/b', '/**/d', { partial: true }) // true, might be /a/b/.../d minimatch('/x/y/z', '/a/**/z', { partial: true }) // false, because x !== a ``` ### allowWindowsEscape Windows path separator `\` is by default converted to `/`, which prohibits the usage of `\` as a escape character. This flag skips that behavior and allows using the escape character. ## Comparisons to other fnmatch/glob implementations While strict compliance with the existing standards is a worthwhile goal, some discrepancies exist between minimatch and other implementations, and are intentional. If the pattern starts with a `!` character, then it is negated. Set the `nonegate` flag to suppress this behavior, and treat leading `!` characters normally. This is perhaps relevant if you wish to start the pattern with a negative extglob pattern like `!(a|B)`. Multiple `!` characters at the start of a pattern will negate the pattern multiple times. If a pattern starts with `#`, then it is treated as a comment, and will not match anything. Use `\#` to match a literal `#` at the start of a line, or set the `nocomment` flag to suppress this behavior. The double-star character `**` is supported by default, unless the `noglobstar` flag is set. This is supported in the manner of bsdglob and bash 4.1, where `**` only has special significance if it is the only thing in a path part. That is, `a/**/b` will match `a/x/y/b`, but `a/**b` will not. If an escaped pattern has no matches, and the `nonull` flag is set, then minimatch.match returns the pattern as-provided, rather than interpreting the character escapes. For example, `minimatch.match([], "\\*a\\?")` will return `"\\*a\\?"` rather than `"*a?"`. This is akin to setting the `nullglob` option in bash, except that it does not resolve escaped pattern characters. If brace expansion is not disabled, then it is performed before any other interpretation of the glob pattern. Thus, a pattern like `+(a|{b),c)}`, which would not be valid in bash or zsh, is expanded **first** into the set of `+(a|b)` and `+(a|c)`, and those patterns are checked for validity. Since those two are valid, matching proceeds. NOTE: The default branch has been renamed! master is now named main If you have a local clone, you can update it by running: ```shell git branch -m master main git fetch origin git branch -u origin/main main ``` # **node-addon-api module** This module contains **header-only C++ wrapper classes** which simplify the use of the C based [Node-API](https://nodejs.org/dist/latest/docs/api/n-api.html) provided by Node.js when using C++. It provides a C++ object model and exception handling semantics with low overhead. There are three options for implementing addons: Node-API, nan, or direct use of internal V8, libuv and Node.js libraries. Unless there is a need for direct access to functionality which is not exposed by Node-API as outlined in [C/C++ addons](https://nodejs.org/dist/latest/docs/api/addons.html) in Node.js core, use Node-API. Refer to [C/C++ addons with Node-API](https://nodejs.org/dist/latest/docs/api/n-api.html) for more information on Node-API. Node-API is an ABI stable C interface provided by Node.js for building native addons. It is independent from the underlying JavaScript runtime (e.g. V8 or ChakraCore) and is maintained as part of Node.js itself. It is intended to insulate native addons from changes in the underlying JavaScript engine and allow modules compiled for one version to run on later versions of Node.js without recompilation. The `node-addon-api` module, which is not part of Node.js, preserves the benefits of the Node-API as it consists only of inline code that depends only on the stable API provided by Node-API. As such, modules built against one version of Node.js using node-addon-api should run without having to be rebuilt with newer versions of Node.js. It is important to remember that *other* Node.js interfaces such as `libuv` (included in a project via `#include <uv.h>`) are not ABI-stable across Node.js major versions. Thus, an addon must use Node-API and/or `node-addon-api` exclusively and build against a version of Node.js that includes an implementation of Node-API (meaning an active LTS version of Node.js) in order to benefit from ABI stability across Node.js major versions. Node.js provides an [ABI stability guide][] containing a detailed explanation of ABI stability in general, and the Node-API ABI stability guarantee in particular. As new APIs are added to Node-API, node-addon-api must be updated to provide wrappers for those new APIs. For this reason node-addon-api provides methods that allow callers to obtain the underlying Node-API handles so direct calls to Node-API and the use of the objects/methods provided by node-addon-api can be used together. For example, in order to be able to use an API for which the node-addon-api does not yet provide a wrapper. APIs exposed by node-addon-api are generally used to create and manipulate JavaScript values. Concepts and operations generally map to ideas specified in the **ECMA262 Language Specification**. The [Node-API Resource](https://nodejs.github.io/node-addon-examples/) offers an excellent orientation and tips for developers just getting started with Node-API and node-addon-api. - **[Setup](#setup)** - **[API Documentation](#api)** - **[Examples](#examples)** - **[Tests](#tests)** - **[More resource and info about native Addons](#resources)** - **[Badges](#badges)** - **[Code of Conduct](CODE_OF_CONDUCT.md)** - **[Contributors](#contributors)** - **[License](#license)** ## **Current version: 4.3.0** (See [CHANGELOG.md](CHANGELOG.md) for complete Changelog) [](https://nodei.co/npm/node-addon-api/) [](https://nodei.co/npm/node-addon-api/) <a name="setup"></a> node-addon-api is based on [Node-API](https://nodejs.org/api/n-api.html) and supports using different Node-API versions. This allows addons built with it to run with Node.js versions which support the targeted Node-API version. **However** the node-addon-api support model is to support only the active LTS Node.js versions. This means that every year there will be a new major which drops support for the Node.js LTS version which has gone out of service. The oldest Node.js version supported by the current version of node-addon-api is Node.js 12.x. ## Setup - [Installation and usage](doc/setup.md) - [node-gyp](doc/node-gyp.md) - [cmake-js](doc/cmake-js.md) - [Conversion tool](doc/conversion-tool.md) - [Checker tool](doc/checker-tool.md) - [Generator](doc/generator.md) - [Prebuild tools](doc/prebuild_tools.md) <a name="api"></a> ### **API Documentation** The following is the documentation for node-addon-api. - [Full Class Hierarchy](doc/hierarchy.md) - [Addon Structure](doc/addon.md) - Data Types: - [Env](doc/env.md) - [CallbackInfo](doc/callbackinfo.md) - [Reference](doc/reference.md) - [Value](doc/value.md) - [Name](doc/name.md) - [Symbol](doc/symbol.md) - [String](doc/string.md) - [Number](doc/number.md) - [Date](doc/date.md) - [BigInt](doc/bigint.md) - [Boolean](doc/boolean.md) - [External](doc/external.md) - [Object](doc/object.md) - [Array](doc/array.md) - [ObjectReference](doc/object_reference.md) - [PropertyDescriptor](doc/property_descriptor.md) - [Function](doc/function.md) - [FunctionReference](doc/function_reference.md) - [ObjectWrap](doc/object_wrap.md) - [ClassPropertyDescriptor](doc/class_property_descriptor.md) - [Buffer](doc/buffer.md) - [ArrayBuffer](doc/array_buffer.md) - [TypedArray](doc/typed_array.md) - [TypedArrayOf](doc/typed_array_of.md) - [DataView](doc/dataview.md) - [Error Handling](doc/error_handling.md) - [Error](doc/error.md) - [TypeError](doc/type_error.md) - [RangeError](doc/range_error.md) - [Object Lifetime Management](doc/object_lifetime_management.md) - [HandleScope](doc/handle_scope.md) - [EscapableHandleScope](doc/escapable_handle_scope.md) - [Memory Management](doc/memory_management.md) - [Async Operations](doc/async_operations.md) - [AsyncWorker](doc/async_worker.md) - [AsyncContext](doc/async_context.md) - [AsyncWorker Variants](doc/async_worker_variants.md) - [Thread-safe Functions](doc/threadsafe.md) - [ThreadSafeFunction](doc/threadsafe_function.md) - [TypedThreadSafeFunction](doc/typed_threadsafe_function.md) - [Promises](doc/promises.md) - [Version management](doc/version_management.md) <a name="examples"></a> ### **Examples** Are you new to **node-addon-api**? Take a look at our **[examples](https://github.com/nodejs/node-addon-examples)** - **[Hello World](https://github.com/nodejs/node-addon-examples/tree/HEAD/1_hello_world/node-addon-api)** - **[Pass arguments to a function](https://github.com/nodejs/node-addon-examples/tree/HEAD/2_function_arguments/node-addon-api)** - **[Callbacks](https://github.com/nodejs/node-addon-examples/tree/HEAD/3_callbacks/node-addon-api)** - **[Object factory](https://github.com/nodejs/node-addon-examples/tree/HEAD/4_object_factory/node-addon-api)** - **[Function factory](https://github.com/nodejs/node-addon-examples/tree/HEAD/5_function_factory/node-addon-api)** - **[Wrapping C++ Object](https://github.com/nodejs/node-addon-examples/tree/HEAD/6_object_wrap/node-addon-api)** - **[Factory of wrapped object](https://github.com/nodejs/node-addon-examples/tree/HEAD/7_factory_wrap/node-addon-api)** - **[Passing wrapped object around](https://github.com/nodejs/node-addon-examples/tree/HEAD/8_passing_wrapped/node-addon-api)** <a name="tests"></a> ### **Tests** To run the **node-addon-api** tests do: ``` npm install npm test ``` To avoid testing the deprecated portions of the API run ``` npm install npm test --disable-deprecated ``` To run the tests targeting a specific version of Node-API run ``` npm install export NAPI_VERSION=X npm test --NAPI_VERSION=X ``` where X is the version of Node-API you want to target. ### **Debug** To run the **node-addon-api** tests with `--debug` option: ``` npm run-script dev ``` If you want faster build, you might use the following option: ``` npm run-script dev:incremental ``` Take a look and get inspired by our **[test suite](https://github.com/nodejs/node-addon-api/tree/HEAD/test)** ### **Benchmarks** You can run the available benchmarks using the following command: ``` npm run-script benchmark ``` See [benchmark/README.md](benchmark/README.md) for more details about running and adding benchmarks. <a name="resources"></a> ### **More resource and info about native Addons** - **[C++ Addons](https://nodejs.org/dist/latest/docs/api/addons.html)** - **[Node-API](https://nodejs.org/dist/latest/docs/api/n-api.html)** - **[Node-API - Next Generation Node API for Native Modules](https://youtu.be/-Oniup60Afs)** - **[How We Migrated Realm JavaScript From NAN to Node-API](https://developer.mongodb.com/article/realm-javascript-nan-to-n-api)** As node-addon-api's core mission is to expose the plain C Node-API as C++ wrappers, tools that facilitate n-api/node-addon-api providing more convenient patterns on developing a Node.js add-ons with n-api/node-addon-api can be published to NPM as standalone packages. It is also recommended to tag such packages with `node-addon-api` to provide more visibility to the community. Quick links to NPM searches: [keywords:node-addon-api](https://www.npmjs.com/search?q=keywords%3Anode-addon-api). <a name="other-bindings"></a> ### **Other bindings** - **[napi-rs](https://napi.rs)** - (`Rust`) <a name="badges"></a> ### **Badges** The use of badges is recommended to indicate the minimum version of Node-API required for the module. This helps to determine which Node.js major versions are supported. Addon maintainers can consult the [Node-API support matrix][] to determine which Node.js versions provide a given Node-API version. The following badges are available:          ## **Contributing** We love contributions from the community to **node-addon-api**! See [CONTRIBUTING.md](CONTRIBUTING.md) for more details on our philosophy around extending this module. <a name="contributors"></a> ## Team members ### Active | Name | GitHub Link | | ------------------- | ----------------------------------------------------- | | Anna Henningsen | [addaleax](https://github.com/addaleax) | | Chengzhong Wu | [legendecas](https://github.com/legendecas) | | Gabriel Schulhof | [gabrielschulhof](https://github.com/gabrielschulhof) | | Jim Schlight | [jschlight](https://github.com/jschlight) | | Michael Dawson | [mhdawson](https://github.com/mhdawson) | | Kevin Eady | [KevinEady](https://github.com/KevinEady) | Nicola Del Gobbo | [NickNaso](https://github.com/NickNaso) | ### Emeritus | Name | GitHub Link | | ------------------- | ----------------------------------------------------- | | Arunesh Chandra | [aruneshchandra](https://github.com/aruneshchandra) | | Benjamin Byholm | [kkoopa](https://github.com/kkoopa) | | Jason Ginchereau | [jasongin](https://github.com/jasongin) | | Hitesh Kanwathirtha | [digitalinfinity](https://github.com/digitalinfinity) | | Sampson Gao | [sampsongao](https://github.com/sampsongao) | | Taylor Woll | [boingoing](https://github.com/boingoing) | <a name="license"></a> Licensed under [MIT](./LICENSE.md) [ABI stability guide]: https://nodejs.org/en/docs/guides/abi-stability/ [Node-API support matrix]: https://nodejs.org/dist/latest/docs/api/n-api.html#n_api_n_api_version_matrix  Moo! ==== Moo is a highly-optimised tokenizer/lexer generator. Use it to tokenize your strings, before parsing 'em with a parser like [nearley](https://github.com/hardmath123/nearley) or whatever else you're into. * [Fast](#is-it-fast) * [Convenient](#usage) * uses [Regular Expressions](#on-regular-expressions) * tracks [Line Numbers](#line-numbers) * handles [Keywords](#keywords) * supports [States](#states) * custom [Errors](#errors) * is even [Iterable](#iteration) * has no dependencies * 4KB minified + gzipped * Moo! Is it fast? ----------- Yup! Flying-cows-and-singed-steak fast. Moo is the fastest JS tokenizer around. It's **~2–10x** faster than most other tokenizers; it's a **couple orders of magnitude** faster than some of the slower ones. Define your tokens **using regular expressions**. Moo will compile 'em down to a **single RegExp for performance**. It uses the new ES6 **sticky flag** where possible to make things faster; otherwise it falls back to an almost-as-efficient workaround. (For more than you ever wanted to know about this, read [adventures in the land of substrings and RegExps](http://mrale.ph/blog/2016/11/23/making-less-dart-faster.html).) You _might_ be able to go faster still by writing your lexer by hand rather than using RegExps, but that's icky. Oh, and it [avoids parsing RegExps by itself](https://hackernoon.com/the-madness-of-parsing-real-world-javascript-regexps-d9ee336df983#.2l8qu3l76). Because that would be horrible. Usage ----- First, you need to do the needful: `$ npm install moo`, or whatever will ship this code to your computer. Alternatively, grab the `moo.js` file by itself and slap it into your web page via a `<script>` tag; moo is completely standalone. Then you can start roasting your very own lexer/tokenizer: ```js const moo = require('moo') let lexer = moo.compile({ WS: /[ \t]+/, comment: /\/\/.*?$/, number: /0|[1-9][0-9]*/, string: /"(?:\\["\\]|[^\n"\\])*"/, lparen: '(', rparen: ')', keyword: ['while', 'if', 'else', 'moo', 'cows'], NL: { match: /\n/, lineBreaks: true }, }) ``` And now throw some text at it: ```js lexer.reset('while (10) cows\nmoo') lexer.next() // -> { type: 'keyword', value: 'while' } lexer.next() // -> { type: 'WS', value: ' ' } lexer.next() // -> { type: 'lparen', value: '(' } lexer.next() // -> { type: 'number', value: '10' } // ... ``` When you reach the end of Moo's internal buffer, next() will return `undefined`. You can always `reset()` it and feed it more data when that happens. On Regular Expressions ---------------------- RegExps are nifty for making tokenizers, but they can be a bit of a pain. Here are some things to be aware of: * You often want to use **non-greedy quantifiers**: e.g. `*?` instead of `*`. Otherwise your tokens will be longer than you expect: ```js let lexer = moo.compile({ string: /".*"/, // greedy quantifier * // ... }) lexer.reset('"foo" "bar"') lexer.next() // -> { type: 'string', value: 'foo" "bar' } ``` Better: ```js let lexer = moo.compile({ string: /".*?"/, // non-greedy quantifier *? // ... }) lexer.reset('"foo" "bar"') lexer.next() // -> { type: 'string', value: 'foo' } lexer.next() // -> { type: 'space', value: ' ' } lexer.next() // -> { type: 'string', value: 'bar' } ``` * The **order of your rules** matters. Earlier ones will take precedence. ```js moo.compile({ identifier: /[a-z0-9]+/, number: /[0-9]+/, }).reset('42').next() // -> { type: 'identifier', value: '42' } moo.compile({ number: /[0-9]+/, identifier: /[a-z0-9]+/, }).reset('42').next() // -> { type: 'number', value: '42' } ``` * Moo uses **multiline RegExps**. This has a few quirks: for example, the **dot `/./` doesn't include newlines**. Use `[^]` instead if you want to match newlines too. * Since an excluding character ranges like `/[^ ]/` (which matches anything but a space) _will_ include newlines, you have to be careful not to include them by accident! In particular, the whitespace metacharacter `\s` includes newlines. Line Numbers ------------ Moo tracks detailed information about the input for you. It will track line numbers, as long as you **apply the `lineBreaks: true` option to any rules which might contain newlines**. Moo will try to warn you if you forget to do this. Note that this is `false` by default, for performance reasons: counting the number of lines in a matched token has a small cost. For optimal performance, only match newlines inside a dedicated token: ```js newline: {match: '\n', lineBreaks: true}, ``` ### Token Info ### Token objects (returned from `next()`) have the following attributes: * **`type`**: the name of the group, as passed to compile. * **`text`**: the string that was matched. * **`value`**: the string that was matched, transformed by your `value` function (if any). * **`offset`**: the number of bytes from the start of the buffer where the match starts. * **`lineBreaks`**: the number of line breaks found in the match. (Always zero if this rule has `lineBreaks: false`.) * **`line`**: the line number of the beginning of the match, starting from 1. * **`col`**: the column where the match begins, starting from 1. ### Value vs. Text ### The `value` is the same as the `text`, unless you provide a [value transform](#transform). ```js const moo = require('moo') const lexer = moo.compile({ ws: /[ \t]+/, string: {match: /"(?:\\["\\]|[^\n"\\])*"/, value: s => s.slice(1, -1)}, }) lexer.reset('"test"') lexer.next() /* { value: 'test', text: '"test"', ... } */ ``` ### Reset ### Calling `reset()` on your lexer will empty its internal buffer, and set the line, column, and offset counts back to their initial value. If you don't want this, you can `save()` the state, and later pass it as the second argument to `reset()` to explicitly control the internal state of the lexer. ```js    lexer.reset('some line\n') let info = lexer.save() // -> { line: 10 } lexer.next() // -> { line: 10 } lexer.next() // -> { line: 11 } // ... lexer.reset('a different line\n', info) lexer.next() // -> { line: 10 } ``` Keywords -------- Moo makes it convenient to define literals. ```js moo.compile({ lparen: '(', rparen: ')', keyword: ['while', 'if', 'else', 'moo', 'cows'], }) ``` It'll automatically compile them into regular expressions, escaping them where necessary. **Keywords** should be written using the `keywords` transform. ```js moo.compile({ IDEN: {match: /[a-zA-Z]+/, type: moo.keywords({ KW: ['while', 'if', 'else', 'moo', 'cows'], })}, SPACE: {match: /\s+/, lineBreaks: true}, }) ``` ### Why? ### You need to do this to ensure the **longest match** principle applies, even in edge cases. Imagine trying to parse the input `className` with the following rules: ```js keyword: ['class'], identifier: /[a-zA-Z]+/, ``` You'll get _two_ tokens — `['class', 'Name']` -- which is _not_ what you want! If you swap the order of the rules, you'll fix this example; but now you'll lex `class` wrong (as an `identifier`). The keywords helper checks matches against the list of keywords; if any of them match, it uses the type `'keyword'` instead of `'identifier'` (for this example). ### Keyword Types ### Keywords can also have **individual types**. ```js let lexer = moo.compile({ name: {match: /[a-zA-Z]+/, type: moo.keywords({ 'kw-class': 'class', 'kw-def': 'def', 'kw-if': 'if', })}, // ... }) lexer.reset('def foo') lexer.next() // -> { type: 'kw-def', value: 'def' } lexer.next() // space lexer.next() // -> { type: 'name', value: 'foo' } ``` You can use [itt](https://github.com/nathan/itt)'s iterator adapters to make constructing keyword objects easier: ```js itt(['class', 'def', 'if']) .map(k => ['kw-' + k, k]) .toObject() ``` States ------ Moo allows you to define multiple lexer **states**. Each state defines its own separate set of token rules. Your lexer will start off in the first state given to `moo.states({})`. Rules can be annotated with `next`, `push`, and `pop`, to change the current state after that token is matched. A "stack" of past states is kept, which is used by `push` and `pop`. * **`next: 'bar'`** moves to the state named `bar`. (The stack is not changed.) * **`push: 'bar'`** moves to the state named `bar`, and pushes the old state onto the stack. * **`pop: 1`** removes one state from the top of the stack, and moves to that state. (Only `1` is supported.) Only rules from the current state can be matched. You need to copy your rule into all the states you want it to be matched in. For example, to tokenize JS-style string interpolation such as `a${{c: d}}e`, you might use: ```js let lexer = moo.states({ main: { strstart: {match: '`', push: 'lit'}, ident: /\w+/, lbrace: {match: '{', push: 'main'}, rbrace: {match: '}', pop: true}, colon: ':', space: {match: /\s+/, lineBreaks: true}, }, lit: { interp: {match: '${', push: 'main'}, escape: /\\./, strend: {match: '`', pop: true}, const: {match: /(?:[^$`]|\$(?!\{))+/, lineBreaks: true}, }, }) // <= `a${{c: d}}e` // => strstart const interp lbrace ident colon space ident rbrace rbrace const strend ``` The `rbrace` rule is annotated with `pop`, so it moves from the `main` state into either `lit` or `main`, depending on the stack. Errors ------ If none of your rules match, Moo will throw an Error; since it doesn't know what else to do. If you prefer, you can have moo return an error token instead of throwing an exception. The error token will contain the whole of the rest of the buffer. ```js moo.compile({ // ... myError: moo.error, }) moo.reset('invalid') moo.next() // -> { type: 'myError', value: 'invalid', text: 'invalid', offset: 0, lineBreaks: 0, line: 1, col: 1 } moo.next() // -> undefined ``` You can have a token type that both matches tokens _and_ contains error values. ```js moo.compile({ // ... myError: {match: /[\$?`]/, error: true}, }) ``` ### Formatting errors ### If you want to throw an error from your parser, you might find `formatError` helpful. Call it with the offending token: ```js throw new Error(lexer.formatError(token, "invalid syntax")) ``` It returns a string with a pretty error message. ``` Error: invalid syntax at line 2 col 15: totally valid `syntax` ^ ``` Iteration --------- Iterators: we got 'em. ```js for (let here of lexer) { // here = { type: 'number', value: '123', ... } } ``` Create an array of tokens. ```js let tokens = Array.from(lexer); ``` Use [itt](https://github.com/nathan/itt)'s iteration tools with Moo. ```js for (let [here, next] = itt(lexer).lookahead()) { // pass a number if you need more tokens // enjoy! } ``` Transform --------- Moo doesn't allow capturing groups, but you can supply a transform function, `value()`, which will be called on the value before storing it in the Token object. ```js moo.compile({ STRING: [ {match: /"""[^]*?"""/, lineBreaks: true, value: x => x.slice(3, -3)}, {match: /"(?:\\["\\rn]|[^"\\])*?"/, lineBreaks: true, value: x => x.slice(1, -1)}, {match: /'(?:\\['\\rn]|[^'\\])*?'/, lineBreaks: true, value: x => x.slice(1, -1)}, ], // ... }) ``` Contributing ------------ Do check the [FAQ](https://github.com/tjvr/moo/issues?q=label%3Aquestion). Before submitting an issue, [remember...](https://github.com/tjvr/moo/blob/master/.github/CONTRIBUTING.md) # fast-deep-equal The fastest deep equal with ES6 Map, Set and Typed arrays support. [](https://travis-ci.org/epoberezkin/fast-deep-equal) [](https://www.npmjs.com/package/fast-deep-equal) [](https://coveralls.io/github/epoberezkin/fast-deep-equal?branch=master) ## Install ```bash npm install fast-deep-equal ``` ## Features - ES5 compatible - works in node.js (8+) and browsers (IE9+) - checks equality of Date and RegExp objects by value. ES6 equal (`require('fast-deep-equal/es6')`) also supports: - Maps - Sets - Typed arrays ## Usage ```javascript var equal = require('fast-deep-equal'); console.log(equal({foo: 'bar'}, {foo: 'bar'})); // true ``` To support ES6 Maps, Sets and Typed arrays equality use: ```javascript var equal = require('fast-deep-equal/es6'); console.log(equal(Int16Array([1, 2]), Int16Array([1, 2]))); // true ``` To use with React (avoiding the traversal of React elements' _owner property that contains circular references and is not needed when comparing the elements - borrowed from [react-fast-compare](https://github.com/FormidableLabs/react-fast-compare)): ```javascript var equal = require('fast-deep-equal/react'); var equal = require('fast-deep-equal/es6/react'); ``` ## Performance benchmark Node.js v12.6.0: ``` fast-deep-equal x 261,950 ops/sec ±0.52% (89 runs sampled) fast-deep-equal/es6 x 212,991 ops/sec ±0.34% (92 runs sampled) fast-equals x 230,957 ops/sec ±0.83% (85 runs sampled) nano-equal x 187,995 ops/sec ±0.53% (88 runs sampled) shallow-equal-fuzzy x 138,302 ops/sec ±0.49% (90 runs sampled) underscore.isEqual x 74,423 ops/sec ±0.38% (89 runs sampled) lodash.isEqual x 36,637 ops/sec ±0.72% (90 runs sampled) deep-equal x 2,310 ops/sec ±0.37% (90 runs sampled) deep-eql x 35,312 ops/sec ±0.67% (91 runs sampled) ramda.equals x 12,054 ops/sec ±0.40% (91 runs sampled) util.isDeepStrictEqual x 46,440 ops/sec ±0.43% (90 runs sampled) assert.deepStrictEqual x 456 ops/sec ±0.71% (88 runs sampled) The fastest is fast-deep-equal ``` To run benchmark (requires node.js 6+): ```bash npm run benchmark ``` __Please note__: this benchmark runs against the available test cases. To choose the most performant library for your application, it is recommended to benchmark against your data and to NOT expect this benchmark to reflect the performance difference in your application. ## Enterprise support fast-deep-equal package is a part of [Tidelift enterprise subscription](https://tidelift.com/subscription/pkg/npm-fast-deep-equal?utm_source=npm-fast-deep-equal&utm_medium=referral&utm_campaign=enterprise&utm_term=repo) - it provides a centralised commercial support to open-source software users, in addition to the support provided by software maintainers. ## Security contact To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. Please do NOT report security vulnerability via GitHub issues. ## License [MIT](https://github.com/epoberezkin/fast-deep-equal/blob/master/LICENSE) # once Only call a function once. ## usage ```javascript var once = require('once') function load (file, cb) { cb = once(cb) loader.load('file') loader.once('load', cb) loader.once('error', cb) } ``` Or add to the Function.prototype in a responsible way: ```javascript // only has to be done once require('once').proto() function load (file, cb) { cb = cb.once() loader.load('file') loader.once('load', cb) loader.once('error', cb) } ``` Ironically, the prototype feature makes this module twice as complicated as necessary. To check whether you function has been called, use `fn.called`. Once the function is called for the first time the return value of the original function is saved in `fn.value` and subsequent calls will continue to return this value. ```javascript var once = require('once') function load (cb) { cb = once(cb) var stream = createStream() stream.once('data', cb) stream.once('end', function () { if (!cb.called) cb(new Error('not found')) }) } ``` ## `once.strict(func)` Throw an error if the function is called twice. Some functions are expected to be called only once. Using `once` for them would potentially hide logical errors. In the example below, the `greet` function has to call the callback only once: ```javascript function greet (name, cb) { // return is missing from the if statement // when no name is passed, the callback is called twice if (!name) cb('Hello anonymous') cb('Hello ' + name) } function log (msg) { console.log(msg) } // this will print 'Hello anonymous' but the logical error will be missed greet(null, once(msg)) // once.strict will print 'Hello anonymous' and throw an error when the callback will be called the second time greet(null, once.strict(msg)) ``` # Ozone - Javascript Class Framework [](https://travis-ci.org/inf3rno/o3) The Ozone class framework contains enhanced class support to ease the development of object-oriented javascript applications in an ES5 environment. Another alternative to get a better class support to use ES6 classes and compilers like Babel, Traceur or TypeScript until native ES6 support arrives. ## Documentation ### Installation ```bash npm install o3 ``` ```bash bower install o3 ``` #### Environment compatibility The framework succeeded the tests on - node v4.2 and v5.x - chrome 51.0 - firefox 47.0 and 48.0 - internet explorer 11.0 - phantomjs 2.1 by the usage of npm scripts under win7 x64. I wasn't able to test the framework by Opera since the Karma launcher is buggy, so I decided not to support Opera. I used [Yadda](https://github.com/acuminous/yadda) to write BDD tests. I used [Karma](https://github.com/karma-runner/karma) with [Browserify](https://github.com/substack/node-browserify) to test the framework in browsers. On pre-ES5 environments there will be bugs in the Class module due to pre-ES5 enumeration and the lack of some ES5 methods, so pre-ES5 environments are not supported. #### Requirements An ES5 capable environment is required with - `Object.create` - ES5 compatible property enumeration: `Object.defineProperty`, `Object.getOwnPropertyDescriptor`, `Object.prototype.hasOwnProperty`, etc. - `Array.prototype.forEach` #### Usage In this documentation I used the framework as follows: ```js var o3 = require("o3"), Class = o3.Class; ``` ### Inheritance #### Inheriting from native classes (from the Error class in these examples) You can extend native classes by calling the Class() function. ```js var UserError = Class(Error, { prototype: { message: "blah", constructor: function UserError() { Error.captureStackTrace(this, this.constructor); } } }); ``` An alternative to call Class.extend() with the Ancestor as the context. The Class() function uses this in the background. ```js var UserError = Class.extend.call(Error, { prototype: { message: "blah", constructor: function UserError() { Error.captureStackTrace(this, this.constructor); } } }); ``` #### Inheriting from custom classes You can use Class.extend() by any other class, not just by native classes. ```js var Ancestor = Class(Object, { prototype: { a: 1, b: 2 } }); var Descendant = Class.extend.call(Ancestor, { prototype: { c: 3 } }); ``` Or you can simply add it as a static method, so you don't have to pass context any time you want to use it. The only drawback, that this static method will be inherited as well. ```js var Ancestor = Class(Object, { extend: Class.extend, prototype: { a: 1, b: 2 } }); var Descendant = Ancestor.extend({ prototype: { c: 3 } }); ``` #### Inheriting from the Class class You can inherit the extend() method and other utility methods from the Class class. Probably this is the simplest solution if you need the Class API and you don't need to inherit from special native classes like Error. ```js var Ancestor = Class.extend({ prototype: { a: 1, b: 2 } }); var Descendant = Ancestor.extend({ prototype: { c: 3 } }); ``` #### Inheritance with clone and merge The static extend() method uses the clone() and merge() utility methods to inherit from the ancestor and add properties from the config. ```js var MyClass = Class.clone.call(Object, function MyClass(){ // ... }); Class.merge.call(MyClass, { prototype: { x: 1, y: 2 } }); ``` Or with utility methods. ```js var MyClass = Class.clone(function MyClass() { // ... }).merge({ prototype: { x: 1, y: 2 } }); ``` #### Inheritance with clone and absorb You can fill in missing properties with the usage of absorb. ```js var MyClass = Class(SomeAncestor, {...}); Class.absorb.call(MyClass, Class); MyClass.merge({...}); ``` For example if you don't have Class methods and your class already has an ancestor, then you can use absorb() to add Class methods. #### Abstract classes Using abstract classes with instantiation verification won't be implemented in this lib, however we provide an `abstractMethod`, which you can put to not implemented parts of your abstract class. ```js var AbstractA = Class({ prototype: { doA: function (){ // ... var b = this.getB(); // ... // do something with b // ... }, getB: abstractMethod } }); var AB1 = Class(AbstractA, { prototype: { getB: function (){ return new B1(); } } }); var ab1 = new AB1(); ``` I strongly support the composition over inheritance principle and I think you should use dependency injection instead of abstract classes. ```js var A = Class({ prototype: { init: function (b){ this.b = b; }, doA: function (){ // ... // do something with this.b // ... } } }); var b = new B1(); var ab1 = new A(b); ``` ### Constructors #### Using a custom constructor You can pass your custom constructor as a config option by creating the class. ```js var MyClass = Class(Object, { prototype: { constructor: function () { // ... } } }); ``` #### Using a custom factory to create the constructor Or you can pass a static factory method to create your custom constructor. ```js var MyClass = Class(Object, { factory: function () { return function () { // ... } } }); ``` #### Using an inherited factory to create the constructor By inheritance the constructors of the descendant classes will be automatically created as well. ```js var Ancestor = Class(Object, { factory: function () { return function () { // ... } } }); var Descendant = Class(Ancestor, {}); ``` #### Using the default factory to create the constructor You don't need to pass anything if you need a noop function as constructor. The Class.factory() will create a noop constructor by default. ```js var MyClass = Class(Object, {}); ``` In fact you don't need to pass any arguments to the Class function if you need an empty class inheriting from the Object native class. ```js var MyClass = Class(); ``` The default factory calls the build() and init() methods if they are given. ```js var MyClass = Class({ prototype: { build: function (options) { console.log("build", options); }, init: function (options) { console.log("init", options); } } }); var my = new MyClass({a: 1, b: 2}); // build {a: 1, b: 2} // init {a: 1, b: 2} var my2 = my.clone({c: 3}); // build {c: 3} var MyClass2 = MyClass.extend({}, [{d: 4}]); // build {d: 4} ``` ### Instantiation #### Creating new instance with the new operator Ofc. you can create a new instance in the javascript way. ```js var MyClass = Class(); var my = new MyClass(); ``` #### Creating a new instance with the static newInstance method If you want to pass an array of arguments then you can do it the following way. ```js var MyClass = Class.extend({ prototype: { constructor: function () { for (var i in arguments) console.log(arguments[i]); } } }); var my = MyClass.newInstance.apply(MyClass, ["a", "b", "c"]); // a // b // c ``` #### Creating new instance with clone You can create a new instance by cloning the prototype of the class. ```js var MyClass = Class(); var my = Class.prototype.clone.call(MyClass.prototype); ``` Or you can inherit the utility methods to make this easier. ```js var MyClass = Class.extend(); var my = MyClass.prototype.clone(); ``` Just be aware that by default cloning calls only the `build()` method, so the `init()` method won't be called by the new instance. #### Cloning instances You can clone an existing instance with the clone method. ```js var MyClass = Class.extend(); var my = MyClass.prototype.clone(); var my2 = my.clone(); ``` Be aware that this is prototypal inheritance with Object.create(), so the inherited properties won't be enumerable. The clone() method calls the build() method on the new instance if it is given. #### Using clone in the constructor You can use the same behavior both by cloning and by creating a new instance using the constructor ```js var MyClass = Class.extend({ lastIndex: 0, prototype: { index: undefined, constructor: function MyClass() { return MyClass.prototype.clone(); }, clone: function () { var instance = Class.prototype.clone.call(this); instance.index = ++MyClass.lastIndex; return instance; } } }); var my1 = new MyClass(); var my2 = MyClass.prototype.clone(); var my3 = my1.clone(); var my4 = my2.clone(); ``` Be aware that this way the constructor will drop the instance created with the `new` operator. Be aware that the clone() method is used by inheritance, so creating the prototype of a descendant class will use the clone() method as well. ```js var Descendant = MyClass.clone(function Descendant() { return Descendant.prototype.clone(); }); var my5 = Descendant.prototype; var my6 = new Descendant(); // ... ``` #### Using absorb(), merge() or inheritance to set the defaults values on properties You can use absorb() to set default values after configuration. ```js var MyClass = Class.extend({ prototype: { constructor: function (config) { var theDefaults = { // ... }; this.merge(config); this.absorb(theDefaults); } } }); ``` You can use merge() to set default values before configuration. ```js var MyClass = Class.extend({ prototype: { constructor: function (config) { var theDefaults = { // ... }; this.merge(theDefaults); this.merge(config); } } }); ``` You can use inheritance to set default values on class level. ```js var MyClass = Class.extend({ prototype: { aProperty: defaultValue, // ... constructor: function (config) { this.merge(config); } } }); ``` ## License MIT - 2015 Jánszky László Lajos # lodash.sortby v4.7.0 The [lodash](https://lodash.com/) method `_.sortBy` exported as a [Node.js](https://nodejs.org/) module. ## Installation Using npm: ```bash $ {sudo -H} npm i -g npm $ npm i --save lodash.sortby ``` In Node.js: ```js var sortBy = require('lodash.sortby'); ``` See the [documentation](https://lodash.com/docs#sortBy) or [package source](https://github.com/lodash/lodash/blob/4.7.0-npm-packages/lodash.sortby) for more details. # type-check [](https://travis-ci.org/gkz/type-check) <a name="type-check" /> `type-check` is a library which allows you to check the types of JavaScript values at runtime with a Haskell like type syntax. It is great for checking external input, for testing, or even for adding a bit of safety to your internal code. It is a major component of [levn](https://github.com/gkz/levn). MIT license. Version 0.4.0. Check out the [demo](http://gkz.github.io/type-check/). For updates on `type-check`, [follow me on twitter](https://twitter.com/gkzahariev). npm install type-check ## Quick Examples ```js // Basic types: var typeCheck = require('type-check').typeCheck; typeCheck('Number', 1); // true typeCheck('Number', 'str'); // false typeCheck('Error', new Error); // true typeCheck('Undefined', undefined); // true // Comment typeCheck('count::Number', 1); // true // One type OR another type: typeCheck('Number | String', 2); // true typeCheck('Number | String', 'str'); // true // Wildcard, matches all types: typeCheck('*', 2) // true // Array, all elements of a single type: typeCheck('[Number]', [1, 2, 3]); // true typeCheck('[Number]', [1, 'str', 3]); // false // Tuples, or fixed length arrays with elements of different types: typeCheck('(String, Number)', ['str', 2]); // true typeCheck('(String, Number)', ['str']); // false typeCheck('(String, Number)', ['str', 2, 5]); // false // Object properties: typeCheck('{x: Number, y: Boolean}', {x: 2, y: false}); // true typeCheck('{x: Number, y: Boolean}', {x: 2}); // false typeCheck('{x: Number, y: Maybe Boolean}', {x: 2}); // true typeCheck('{x: Number, y: Boolean}', {x: 2, y: false, z: 3}); // false typeCheck('{x: Number, y: Boolean, ...}', {x: 2, y: false, z: 3}); // true // A particular type AND object properties: typeCheck('RegExp{source: String, ...}', /re/i); // true typeCheck('RegExp{source: String, ...}', {source: 're'}); // false // Custom types: var opt = {customTypes: {Even: { typeOf: 'Number', validate: function(x) { return x % 2 === 0; }}}}; typeCheck('Even', 2, opt); // true // Nested: var type = '{a: (String, [Number], {y: Array, ...}), b: Error{message: String, ...}}' typeCheck(type, {a: ['hi', [1, 2, 3], {y: [1, 'ms']}], b: new Error('oh no')}); // true ``` Check out the [type syntax format](#syntax) and [guide](#guide). ## Usage `require('type-check');` returns an object that exposes four properties. `VERSION` is the current version of the library as a string. `typeCheck`, `parseType`, and `parsedTypeCheck` are functions. ```js // typeCheck(type, input, options); typeCheck('Number', 2); // true // parseType(type); var parsedType = parseType('Number'); // object // parsedTypeCheck(parsedType, input, options); parsedTypeCheck(parsedType, 2); // true ``` ### typeCheck(type, input, options) `typeCheck` checks a JavaScript value `input` against `type` written in the [type format](#type-format) (and taking account the optional `options`) and returns whether the `input` matches the `type`. ##### arguments * type - `String` - the type written in the [type format](#type-format) which to check against * input - `*` - any JavaScript value, which is to be checked against the type * options - `Maybe Object` - an optional parameter specifying additional options, currently the only available option is specifying [custom types](#custom-types) ##### returns `Boolean` - whether the input matches the type ##### example ```js typeCheck('Number', 2); // true ``` ### parseType(type) `parseType` parses string `type` written in the [type format](#type-format) into an object representing the parsed type. ##### arguments * type - `String` - the type written in the [type format](#type-format) which to parse ##### returns `Object` - an object in the parsed type format representing the parsed type ##### example ```js parseType('Number'); // [{type: 'Number'}] ``` ### parsedTypeCheck(parsedType, input, options) `parsedTypeCheck` checks a JavaScript value `input` against parsed `type` in the parsed type format (and taking account the optional `options`) and returns whether the `input` matches the `type`. Use this in conjunction with `parseType` if you are going to use a type more than once. ##### arguments * type - `Object` - the type in the parsed type format which to check against * input - `*` - any JavaScript value, which is to be checked against the type * options - `Maybe Object` - an optional parameter specifying additional options, currently the only available option is specifying [custom types](#custom-types) ##### returns `Boolean` - whether the input matches the type ##### example ```js parsedTypeCheck([{type: 'Number'}], 2); // true var parsedType = parseType('String'); parsedTypeCheck(parsedType, 'str'); // true ``` <a name="type-format" /> ## Type Format ### Syntax White space is ignored. The root node is a __Types__. * __Identifier__ = `[\$\w]+` - a group of any lower or upper case letters, numbers, underscores, or dollar signs - eg. `String` * __Type__ = an `Identifier`, an `Identifier` followed by a `Structure`, just a `Structure`, or a wildcard `*` - eg. `String`, `Object{x: Number}`, `{x: Number}`, `Array{0: String, 1: Boolean, length: Number}`, `*` * __Types__ = optionally a comment (an `Identifier` followed by a `::`), optionally the identifier `Maybe`, one or more `Type`, separated by `|` - eg. `Number`, `String | Date`, `Maybe Number`, `Maybe Boolean | String` * __Structure__ = `Fields`, or a `Tuple`, or an `Array` - eg. `{x: Number}`, `(String, Number)`, `[Date]` * __Fields__ = a `{`, followed one or more `Field` separated by a comma `,` (trailing comma `,` is permitted), optionally an `...` (always preceded by a comma `,`), followed by a `}` - eg. `{x: Number, y: String}`, `{k: Function, ...}` * __Field__ = an `Identifier`, followed by a colon `:`, followed by `Types` - eg. `x: Date | String`, `y: Boolean` * __Tuple__ = a `(`, followed by one or more `Types` separated by a comma `,` (trailing comma `,` is permitted), followed by a `)` - eg `(Date)`, `(Number, Date)` * __Array__ = a `[` followed by exactly one `Types` followed by a `]` - eg. `[Boolean]`, `[Boolean | Null]` ### Guide `type-check` uses `Object.toString` to find out the basic type of a value. Specifically, ```js {}.toString.call(VALUE).slice(8, -1) {}.toString.call(true).slice(8, -1) // 'Boolean' ``` A basic type, eg. `Number`, uses this check. This is much more versatile than using `typeof` - for example, with `document`, `typeof` produces `'object'` which isn't that useful, and our technique produces `'HTMLDocument'`. You may check for multiple types by separating types with a `|`. The checker proceeds from left to right, and passes if the value is any of the types - eg. `String | Boolean` first checks if the value is a string, and then if it is a boolean. If it is none of those, then it returns false. Adding a `Maybe` in front of a list of multiple types is the same as also checking for `Null` and `Undefined` - eg. `Maybe String` is equivalent to `Undefined | Null | String`. You may add a comment to remind you of what the type is for by following an identifier with a `::` before a type (or multiple types). The comment is simply thrown out. The wildcard `*` matches all types. There are three types of structures for checking the contents of a value: 'fields', 'tuple', and 'array'. If used by itself, a 'fields' structure will pass with any type of object as long as it is an instance of `Object` and the properties pass - this allows for duck typing - eg. `{x: Boolean}`. To check if the properties pass, and the value is of a certain type, you can specify the type - eg. `Error{message: String}`. If you want to make a field optional, you can simply use `Maybe` - eg. `{x: Boolean, y: Maybe String}` will still pass if `y` is undefined (or null). If you don't care if the value has properties beyond what you have specified, you can use the 'etc' operator `...` - eg. `{x: Boolean, ...}` will match an object with an `x` property that is a boolean, and with zero or more other properties. For an array, you must specify one or more types (separated by `|`) - it will pass for something of any length as long as each element passes the types provided - eg. `[Number]`, `[Number | String]`. A tuple checks for a fixed number of elements, each of a potentially different type. Each element is separated by a comma - eg. `(String, Number)`. An array and tuple structure check that the value is of type `Array` by default, but if another type is specified, they will check for that instead - eg. `Int32Array[Number]`. You can use the wildcard `*` to search for any type at all. Check out the [type precedence](https://github.com/zaboco/type-precedence) library for type-check. ## Options Options is an object. It is an optional parameter to the `typeCheck` and `parsedTypeCheck` functions. The only current option is `customTypes`. <a name="custom-types" /> ### Custom Types __Example:__ ```js var options = { customTypes: { Even: { typeOf: 'Number', validate: function(x) { return x % 2 === 0; } } } }; typeCheck('Even', 2, options); // true typeCheck('Even', 3, options); // false ``` `customTypes` allows you to set up custom types for validation. The value of this is an object. The keys of the object are the types you will be matching. Each value of the object will be an object having a `typeOf` property - a string, and `validate` property - a function. The `typeOf` property is the type the value should be (optional - if not set only `validate` will be used), and `validate` is a function which should return true if the value is of that type. `validate` receives one parameter, which is the value that we are checking. ## Technical About `type-check` is written in [LiveScript](http://livescript.net/) - a language that compiles to JavaScript. It also uses the [prelude.ls](http://preludels.com/) library. # <img src="docs_app/assets/Rx_Logo_S.png" alt="RxJS Logo" width="86" height="86"> RxJS: Reactive Extensions For JavaScript [](https://circleci.com/gh/ReactiveX/rxjs/tree/6.x) [](http://badge.fury.io/js/%40reactivex%2Frxjs) [](https://gitter.im/Reactive-Extensions/RxJS?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) # RxJS 6 Stable ### MIGRATION AND RELEASE INFORMATION: Find out how to update to v6, **automatically update your TypeScript code**, and more! - [Current home is MIGRATION.md](./docs_app/content/guide/v6/migration.md) ### FOR V 5.X PLEASE GO TO [THE 5.0 BRANCH](https://github.com/ReactiveX/rxjs/tree/5.x) Reactive Extensions Library for JavaScript. This is a rewrite of [Reactive-Extensions/RxJS](https://github.com/Reactive-Extensions/RxJS) and is the latest production-ready version of RxJS. This rewrite is meant to have better performance, better modularity, better debuggable call stacks, while staying mostly backwards compatible, with some breaking changes that reduce the API surface. [Apache 2.0 License](LICENSE.txt) - [Code of Conduct](CODE_OF_CONDUCT.md) - [Contribution Guidelines](CONTRIBUTING.md) - [Maintainer Guidelines](doc_app/content/maintainer-guidelines.md) - [API Documentation](https://rxjs.dev/) ## Versions In This Repository - [master](https://github.com/ReactiveX/rxjs/commits/master) - This is all of the current, unreleased work, which is against v6 of RxJS right now - [stable](https://github.com/ReactiveX/rxjs/commits/stable) - This is the branch for the latest version you'd get if you do `npm install rxjs` ## Important By contributing or commenting on issues in this repository, whether you've read them or not, you're agreeing to the [Contributor Code of Conduct](CODE_OF_CONDUCT.md). Much like traffic laws, ignorance doesn't grant you immunity. ## Installation and Usage ### ES6 via npm ```sh npm install rxjs ``` It's recommended to pull in the Observable creation methods you need directly from `'rxjs'` as shown below with `range`. And you can pull in any operator you need from one spot, under `'rxjs/operators'`. ```ts import { range } from "rxjs"; import { map, filter } from "rxjs/operators"; range(1, 200) .pipe( filter(x => x % 2 === 1), map(x => x + x) ) .subscribe(x => console.log(x)); ``` Here, we're using the built-in `pipe` method on Observables to combine operators. See [pipeable operators](https://github.com/ReactiveX/rxjs/blob/master/doc/pipeable-operators.md) for more information. ### CommonJS via npm To install this library for CommonJS (CJS) usage, use the following command: ```sh npm install rxjs ``` (Note: destructuring available in Node 8+) ```js const { range } = require('rxjs'); const { map, filter } = require('rxjs/operators'); range(1, 200).pipe( filter(x => x % 2 === 1), map(x => x + x) ).subscribe(x => console.log(x)); ``` ### CDN For CDN, you can use [unpkg](https://unpkg.com/): https://unpkg.com/rxjs/bundles/rxjs.umd.min.js The global namespace for rxjs is `rxjs`: ```js const { range } = rxjs; const { map, filter } = rxjs.operators; range(1, 200) .pipe( filter(x => x % 2 === 1), map(x => x + x) ) .subscribe(x => console.log(x)); ``` ## Goals - Smaller overall bundles sizes - Provide better performance than preceding versions of RxJS - To model/follow the [Observable Spec Proposal](https://github.com/zenparsing/es-observable) to the observable - Provide more modular file structure in a variety of formats - Provide more debuggable call stacks than preceding versions of RxJS ## Building/Testing - `npm run build_all` - builds everything - `npm test` - runs tests - `npm run test_no_cache` - run test with `ts-node` set to false ## Performance Tests Run `npm run build_perf` or `npm run perf` to run the performance tests with `protractor`. Run `npm run perf_micro [operator]` to run micro performance test benchmarking operator. ## Adding documentation We appreciate all contributions to the documentation of any type. All of the information needed to get the docs app up and running locally as well as how to contribute can be found in the [documentation directory](./docs_app). ## Generating PNG marble diagrams The script `npm run tests2png` requires some native packages installed locally: `imagemagick`, `graphicsmagick`, and `ghostscript`. For Mac OS X with [Homebrew](http://brew.sh/): - `brew install imagemagick` - `brew install graphicsmagick` - `brew install ghostscript` - You may need to install the Ghostscript fonts manually: - Download the tarball from the [gs-fonts project](https://sourceforge.net/projects/gs-fonts) - `mkdir -p /usr/local/share/ghostscript && tar zxvf /path/to/ghostscript-fonts.tar.gz -C /usr/local/share/ghostscript` For Debian Linux: - `sudo add-apt-repository ppa:dhor/myway` - `apt-get install imagemagick` - `apt-get install graphicsmagick` - `apt-get install ghostscript` For Windows and other Operating Systems, check the download instructions here: - http://imagemagick.org - http://www.graphicsmagick.org - http://www.ghostscript.com/ # ripemd160 [](https://www.npmjs.org/package/ripemd160) [](https://travis-ci.org/crypto-browserify/ripemd160) [](https://david-dm.org/crypto-browserify/ripemd160#info=dependencies) [](https://github.com/feross/standard) Node style `ripemd160` on pure JavaScript. ## Example ```js var RIPEMD160 = require('ripemd160') console.log(new RIPEMD160().update('42').digest('hex')) // => 0df020ba32aa9b8b904471ff582ce6b579bf8bc8 var ripemd160stream = new RIPEMD160() ripemd160stream.end('42') console.log(ripemd160stream.read().toString('hex')) // => 0df020ba32aa9b8b904471ff582ce6b579bf8bc8 ``` ## LICENSE MIT # yallist Yet Another Linked List There are many doubly-linked list implementations like it, but this one is mine. For when an array would be too big, and a Map can't be iterated in reverse order. [](https://travis-ci.org/isaacs/yallist) [](https://coveralls.io/github/isaacs/yallist) ## basic usage ```javascript var yallist = require('yallist') var myList = yallist.create([1, 2, 3]) myList.push('foo') myList.unshift('bar') // of course pop() and shift() are there, too console.log(myList.toArray()) // ['bar', 1, 2, 3, 'foo'] myList.forEach(function (k) { // walk the list head to tail }) myList.forEachReverse(function (k, index, list) { // walk the list tail to head }) var myDoubledList = myList.map(function (k) { return k + k }) // now myDoubledList contains ['barbar', 2, 4, 6, 'foofoo'] // mapReverse is also a thing var myDoubledListReverse = myList.mapReverse(function (k) { return k + k }) // ['foofoo', 6, 4, 2, 'barbar'] var reduced = myList.reduce(function (set, entry) { set += entry return set }, 'start') console.log(reduced) // 'startfoo123bar' ``` ## api The whole API is considered "public". Functions with the same name as an Array method work more or less the same way. There's reverse versions of most things because that's the point. ### Yallist Default export, the class that holds and manages a list. Call it with either a forEach-able (like an array) or a set of arguments, to initialize the list. The Array-ish methods all act like you'd expect. No magic length, though, so if you change that it won't automatically prune or add empty spots. ### Yallist.create(..) Alias for Yallist function. Some people like factories. #### yallist.head The first node in the list #### yallist.tail The last node in the list #### yallist.length The number of nodes in the list. (Change this at your peril. It is not magic like Array length.) #### yallist.toArray() Convert the list to an array. #### yallist.forEach(fn, [thisp]) Call a function on each item in the list. #### yallist.forEachReverse(fn, [thisp]) Call a function on each item in the list, in reverse order. #### yallist.get(n) Get the data at position `n` in the list. If you use this a lot, probably better off just using an Array. #### yallist.getReverse(n) Get the data at position `n`, counting from the tail. #### yallist.map(fn, thisp) Create a new Yallist with the result of calling the function on each item. #### yallist.mapReverse(fn, thisp) Same as `map`, but in reverse. #### yallist.pop() Get the data from the list tail, and remove the tail from the list. #### yallist.push(item, ...) Insert one or more items to the tail of the list. #### yallist.reduce(fn, initialValue) Like Array.reduce. #### yallist.reduceReverse Like Array.reduce, but in reverse. #### yallist.reverse Reverse the list in place. #### yallist.shift() Get the data from the list head, and remove the head from the list. #### yallist.slice([from], [to]) Just like Array.slice, but returns a new Yallist. #### yallist.sliceReverse([from], [to]) Just like yallist.slice, but the result is returned in reverse. #### yallist.toArray() Create an array representation of the list. #### yallist.toArrayReverse() Create a reversed array representation of the list. #### yallist.unshift(item, ...) Insert one or more items to the head of the list. #### yallist.unshiftNode(node) Move a Node object to the front of the list. (That is, pull it out of wherever it lives, and make it the new head.) If the node belongs to a different list, then that list will remove it first. #### yallist.pushNode(node) Move a Node object to the end of the list. (That is, pull it out of wherever it lives, and make it the new tail.) If the node belongs to a list already, then that list will remove it first. #### yallist.removeNode(node) Remove a node from the list, preserving referential integrity of head and tail and other nodes. Will throw an error if you try to have a list remove a node that doesn't belong to it. ### Yallist.Node The class that holds the data and is actually the list. Call with `var n = new Node(value, previousNode, nextNode)` Note that if you do direct operations on Nodes themselves, it's very easy to get into weird states where the list is broken. Be careful :) #### node.next The next node in the list. #### node.prev The previous node in the list. #### node.value The data the node contains. #### node.list The list to which this node belongs. (Null if it does not belong to any list.) # Glob Match files using the patterns the shell uses, like stars and stuff. [](https://travis-ci.org/isaacs/node-glob/) [](https://ci.appveyor.com/project/isaacs/node-glob) [](https://coveralls.io/github/isaacs/node-glob?branch=master) This is a glob implementation in JavaScript. It uses the `minimatch` library to do its matching.  ## Usage Install with npm ``` npm i glob ``` ```javascript var glob = require("glob") // options is optional glob("**/*.js", options, function (er, files) { // files is an array of filenames. // If the `nonull` option is set, and nothing // was found, then files is ["**/*.js"] // er is an error object or null. }) ``` ## Glob Primer "Globs" are the patterns you type when you do stuff like `ls *.js` on the command line, or put `build/*` in a `.gitignore` file. Before parsing the path part patterns, braced sections are expanded into a set. Braced sections start with `{` and end with `}`, with any number of comma-delimited sections within. Braced sections may contain slash characters, so `a{/b/c,bcd}` would expand into `a/b/c` and `abcd`. The following characters have special magic meaning when used in a path portion: * `*` Matches 0 or more characters in a single path portion * `?` Matches 1 character * `[...]` Matches a range of characters, similar to a RegExp range. If the first character of the range is `!` or `^` then it matches any character not in the range. * `!(pattern|pattern|pattern)` Matches anything that does not match any of the patterns provided. * `?(pattern|pattern|pattern)` Matches zero or one occurrence of the patterns provided. * `+(pattern|pattern|pattern)` Matches one or more occurrences of the patterns provided. * `*(a|b|c)` Matches zero or more occurrences of the patterns provided * `@(pattern|pat*|pat?erN)` Matches exactly one of the patterns provided * `**` If a "globstar" is alone in a path portion, then it matches zero or more directories and subdirectories searching for matches. It does not crawl symlinked directories. ### Dots If a file or directory path portion has a `.` as the first character, then it will not match any glob pattern unless that pattern's corresponding path part also has a `.` as its first character. For example, the pattern `a/.*/c` would match the file at `a/.b/c`. However the pattern `a/*/c` would not, because `*` does not start with a dot character. You can make glob treat dots as normal characters by setting `dot:true` in the options. ### Basename Matching If you set `matchBase:true` in the options, and the pattern has no slashes in it, then it will seek for any file anywhere in the tree with a matching basename. For example, `*.js` would match `test/simple/basic.js`. ### Empty Sets If no matching files are found, then an empty array is returned. This differs from the shell, where the pattern itself is returned. For example: $ echo a*s*d*f a*s*d*f To get the bash-style behavior, set the `nonull:true` in the options. ### See Also: * `man sh` * `man bash` (Search for "Pattern Matching") * `man 3 fnmatch` * `man 5 gitignore` * [minimatch documentation](https://github.com/isaacs/minimatch) ## glob.hasMagic(pattern, [options]) Returns `true` if there are any special characters in the pattern, and `false` otherwise. Note that the options affect the results. If `noext:true` is set in the options object, then `+(a|b)` will not be considered a magic pattern. If the pattern has a brace expansion, like `a/{b/c,x/y}` then that is considered magical, unless `nobrace:true` is set in the options. ## glob(pattern, [options], cb) * `pattern` `{String}` Pattern to be matched * `options` `{Object}` * `cb` `{Function}` * `err` `{Error | null}` * `matches` `{Array<String>}` filenames found matching the pattern Perform an asynchronous glob search. ## glob.sync(pattern, [options]) * `pattern` `{String}` Pattern to be matched * `options` `{Object}` * return: `{Array<String>}` filenames found matching the pattern Perform a synchronous glob search. ## Class: glob.Glob Create a Glob object by instantiating the `glob.Glob` class. ```javascript var Glob = require("glob").Glob var mg = new Glob(pattern, options, cb) ``` It's an EventEmitter, and starts walking the filesystem to find matches immediately. ### new glob.Glob(pattern, [options], [cb]) * `pattern` `{String}` pattern to search for * `options` `{Object}` * `cb` `{Function}` Called when an error occurs, or matches are found * `err` `{Error | null}` * `matches` `{Array<String>}` filenames found matching the pattern Note that if the `sync` flag is set in the options, then matches will be immediately available on the `g.found` member. ### Properties * `minimatch` The minimatch object that the glob uses. * `options` The options object passed in. * `aborted` Boolean which is set to true when calling `abort()`. There is no way at this time to continue a glob search after aborting, but you can re-use the statCache to avoid having to duplicate syscalls. * `cache` Convenience object. Each field has the following possible values: * `false` - Path does not exist * `true` - Path exists * `'FILE'` - Path exists, and is not a directory * `'DIR'` - Path exists, and is a directory * `[file, entries, ...]` - Path exists, is a directory, and the array value is the results of `fs.readdir` * `statCache` Cache of `fs.stat` results, to prevent statting the same path multiple times. * `symlinks` A record of which paths are symbolic links, which is relevant in resolving `**` patterns. * `realpathCache` An optional object which is passed to `fs.realpath` to minimize unnecessary syscalls. It is stored on the instantiated Glob object, and may be re-used. ### Events * `end` When the matching is finished, this is emitted with all the matches found. If the `nonull` option is set, and no match was found, then the `matches` list contains the original pattern. The matches are sorted, unless the `nosort` flag is set. * `match` Every time a match is found, this is emitted with the specific thing that matched. It is not deduplicated or resolved to a realpath. * `error` Emitted when an unexpected error is encountered, or whenever any fs error occurs if `options.strict` is set. * `abort` When `abort()` is called, this event is raised. ### Methods * `pause` Temporarily stop the search * `resume` Resume the search * `abort` Stop the search forever ### Options All the options that can be passed to Minimatch can also be passed to Glob to change pattern matching behavior. Also, some have been added, or have glob-specific ramifications. All options are false by default, unless otherwise noted. All options are added to the Glob object, as well. If you are running many `glob` operations, you can pass a Glob object as the `options` argument to a subsequent operation to shortcut some `stat` and `readdir` calls. At the very least, you may pass in shared `symlinks`, `statCache`, `realpathCache`, and `cache` options, so that parallel glob operations will be sped up by sharing information about the filesystem. * `cwd` The current working directory in which to search. Defaults to `process.cwd()`. * `root` The place where patterns starting with `/` will be mounted onto. Defaults to `path.resolve(options.cwd, "/")` (`/` on Unix systems, and `C:\` or some such on Windows.) * `dot` Include `.dot` files in normal matches and `globstar` matches. Note that an explicit dot in a portion of the pattern will always match dot files. * `nomount` By default, a pattern starting with a forward-slash will be "mounted" onto the root setting, so that a valid filesystem path is returned. Set this flag to disable that behavior. * `mark` Add a `/` character to directory matches. Note that this requires additional stat calls. * `nosort` Don't sort the results. * `stat` Set to true to stat *all* results. This reduces performance somewhat, and is completely unnecessary, unless `readdir` is presumed to be an untrustworthy indicator of file existence. * `silent` When an unusual error is encountered when attempting to read a directory, a warning will be printed to stderr. Set the `silent` option to true to suppress these warnings. * `strict` When an unusual error is encountered when attempting to read a directory, the process will just continue on in search of other matches. Set the `strict` option to raise an error in these cases. * `cache` See `cache` property above. Pass in a previously generated cache object to save some fs calls. * `statCache` A cache of results of filesystem information, to prevent unnecessary stat calls. While it should not normally be necessary to set this, you may pass the statCache from one glob() call to the options object of another, if you know that the filesystem will not change between calls. (See "Race Conditions" below.) * `symlinks` A cache of known symbolic links. You may pass in a previously generated `symlinks` object to save `lstat` calls when resolving `**` matches. * `sync` DEPRECATED: use `glob.sync(pattern, opts)` instead. * `nounique` In some cases, brace-expanded patterns can result in the same file showing up multiple times in the result set. By default, this implementation prevents duplicates in the result set. Set this flag to disable that behavior. * `nonull` Set to never return an empty set, instead returning a set containing the pattern itself. This is the default in glob(3). * `debug` Set to enable debug logging in minimatch and glob. * `nobrace` Do not expand `{a,b}` and `{1..3}` brace sets. * `noglobstar` Do not match `**` against multiple filenames. (Ie, treat it as a normal `*` instead.) * `noext` Do not match `+(a|b)` "extglob" patterns. * `nocase` Perform a case-insensitive match. Note: on case-insensitive filesystems, non-magic patterns will match by default, since `stat` and `readdir` will not raise errors. * `matchBase` Perform a basename-only match if the pattern does not contain any slash characters. That is, `*.js` would be treated as equivalent to `**/*.js`, matching all js files in all directories. * `nodir` Do not match directories, only files. (Note: to match *only* directories, simply put a `/` at the end of the pattern.) * `ignore` Add a pattern or an array of glob patterns to exclude matches. Note: `ignore` patterns are *always* in `dot:true` mode, regardless of any other settings. * `follow` Follow symlinked directories when expanding `**` patterns. Note that this can result in a lot of duplicate references in the presence of cyclic links. * `realpath` Set to true to call `fs.realpath` on all of the results. In the case of a symlink that cannot be resolved, the full absolute path to the matched entry is returned (though it will usually be a broken symlink) * `absolute` Set to true to always receive absolute paths for matched files. Unlike `realpath`, this also affects the values returned in the `match` event. * `fs` File-system object with Node's `fs` API. By default, the built-in `fs` module will be used. Set to a volume provided by a library like `memfs` to avoid using the "real" file-system. ## Comparisons to other fnmatch/glob implementations While strict compliance with the existing standards is a worthwhile goal, some discrepancies exist between node-glob and other implementations, and are intentional. The double-star character `**` is supported by default, unless the `noglobstar` flag is set. This is supported in the manner of bsdglob and bash 4.3, where `**` only has special significance if it is the only thing in a path part. That is, `a/**/b` will match `a/x/y/b`, but `a/**b` will not. Note that symlinked directories are not crawled as part of a `**`, though their contents may match against subsequent portions of the pattern. This prevents infinite loops and duplicates and the like. If an escaped pattern has no matches, and the `nonull` flag is set, then glob returns the pattern as-provided, rather than interpreting the character escapes. For example, `glob.match([], "\\*a\\?")` will return `"\\*a\\?"` rather than `"*a?"`. This is akin to setting the `nullglob` option in bash, except that it does not resolve escaped pattern characters. If brace expansion is not disabled, then it is performed before any other interpretation of the glob pattern. Thus, a pattern like `+(a|{b),c)}`, which would not be valid in bash or zsh, is expanded **first** into the set of `+(a|b)` and `+(a|c)`, and those patterns are checked for validity. Since those two are valid, matching proceeds. ### Comments and Negation Previously, this module let you mark a pattern as a "comment" if it started with a `#` character, or a "negated" pattern if it started with a `!` character. These options were deprecated in version 5, and removed in version 6. To specify things that should not match, use the `ignore` option. ## Windows **Please only use forward-slashes in glob expressions.** Though windows uses either `/` or `\` as its path separator, only `/` characters are used by this glob implementation. You must use forward-slashes **only** in glob expressions. Back-slashes will always be interpreted as escape characters, not path separators. Results from absolute patterns such as `/foo/*` are mounted onto the root setting using `path.join`. On windows, this will by default result in `/foo/*` matching `C:\foo\bar.txt`. ## Race Conditions Glob searching, by its very nature, is susceptible to race conditions, since it relies on directory walking and such. As a result, it is possible that a file that exists when glob looks for it may have been deleted or modified by the time it returns the result. As part of its internal implementation, this program caches all stat and readdir calls that it makes, in order to cut down on system overhead. However, this also makes it even more susceptible to races, especially if the cache or statCache objects are reused between glob calls. Users are thus advised not to use a glob result as a guarantee of filesystem state in the face of rapid changes. For the vast majority of operations, this is never a problem. ## Glob Logo Glob's logo was created by [Tanya Brassie](http://tanyabrassie.com/). Logo files can be found [here](https://github.com/isaacs/node-glob/tree/master/logo). The logo is licensed under a [Creative Commons Attribution-ShareAlike 4.0 International License](https://creativecommons.org/licenses/by-sa/4.0/). ## Contributing Any change to behavior (including bugfixes) must come with a test. Patches that fail tests or reduce performance will be rejected. ``` # to run tests npm test # to re-generate test fixtures npm run test-regen # to benchmark against bash/zsh npm run bench # to profile javascript npm run prof ```  # Optionator <a name="optionator" /> Optionator is a JavaScript/Node.js option parsing and help generation library used by [eslint](http://eslint.org), [Grasp](http://graspjs.com), [LiveScript](http://livescript.net), [esmangle](https://github.com/estools/esmangle), [escodegen](https://github.com/estools/escodegen), and [many more](https://www.npmjs.com/browse/depended/optionator). For an online demo, check out the [Grasp online demo](http://www.graspjs.com/#demo). [About](#about) &middot; [Usage](#usage) &middot; [Settings Format](#settings-format) &middot; [Argument Format](#argument-format) ## Why? The problem with other option parsers, such as `yargs` or `minimist`, is they just accept all input, valid or not. With Optionator, if you mistype an option, it will give you an error (with a suggestion for what you meant). If you give the wrong type of argument for an option, it will give you an error rather than supplying the wrong input to your application. $ cmd --halp Invalid option '--halp' - perhaps you meant '--help'? $ cmd --count str Invalid value for option 'count' - expected type Int, received value: str. Other helpful features include reformatting the help text based on the size of the console, so that it fits even if the console is narrow, and accepting not just an array (eg. process.argv), but a string or object as well, making things like testing much easier. ## About Optionator uses [type-check](https://github.com/gkz/type-check) and [levn](https://github.com/gkz/levn) behind the scenes to cast and verify input according the specified types. MIT license. Version 0.9.1 npm install optionator For updates on Optionator, [follow me on twitter](https://twitter.com/gkzahariev). Optionator is a Node.js module, but can be used in the browser as well if packed with webpack/browserify. ## Usage `require('optionator');` returns a function. It has one property, `VERSION`, the current version of the library as a string. This function is called with an object specifying your options and other information, see the [settings format section](#settings-format). This in turn returns an object with three properties, `parse`, `parseArgv`, `generateHelp`, and `generateHelpForOption`, which are all functions. ```js var optionator = require('optionator')({ prepend: 'Usage: cmd [options]', append: 'Version 1.0.0', options: [{ option: 'help', alias: 'h', type: 'Boolean', description: 'displays help' }, { option: 'count', alias: 'c', type: 'Int', description: 'number of things', example: 'cmd --count 2' }] }); var options = optionator.parseArgv(process.argv); if (options.help) { console.log(optionator.generateHelp()); } ... ``` ### parse(input, parseOptions) `parse` processes the `input` according to your settings, and returns an object with the results. ##### arguments * input - `[String] | Object | String` - the input you wish to parse * parseOptions - `{slice: Int}` - all options optional - `slice` specifies how much to slice away from the beginning if the input is an array or string - by default `0` for string, `2` for array (works with `process.argv`) ##### returns `Object` - the parsed options, each key is a camelCase version of the option name (specified in dash-case), and each value is the processed value for that option. Positional values are in an array under the `_` key. ##### example ```js parse(['node', 't.js', '--count', '2', 'positional']); // {count: 2, _: ['positional']} parse('--count 2 positional'); // {count: 2, _: ['positional']} parse({count: 2, _:['positional']}); // {count: 2, _: ['positional']} ``` ### parseArgv(input) `parseArgv` works exactly like `parse`, but only for array input and it slices off the first two elements. ##### arguments * input - `[String]` - the input you wish to parse ##### returns See "returns" section in "parse" ##### example ```js parseArgv(process.argv); ``` ### generateHelp(helpOptions) `generateHelp` produces help text based on your settings. ##### arguments * helpOptions - `{showHidden: Boolean, interpolate: Object}` - all options optional - `showHidden` specifies whether to show options with `hidden: true` specified, by default it is `false` - `interpolate` specify data to be interpolated in `prepend` and `append` text, `{{key}}` is the format - eg. `generateHelp({interpolate:{version: '0.4.2'}})`, will change this `append` text: `Version {{version}}` to `Version 0.4.2` ##### returns `String` - the generated help text ##### example ```js generateHelp(); /* "Usage: cmd [options] positional -h, --help displays help -c, --count Int number of things Version 1.0.0 "*/ ``` ### generateHelpForOption(optionName) `generateHelpForOption` produces expanded help text for the specified with `optionName` option. If an `example` was specified for the option, it will be displayed, and if a `longDescription` was specified, it will display that instead of the `description`. ##### arguments * optionName - `String` - the name of the option to display ##### returns `String` - the generated help text for the option ##### example ```js generateHelpForOption('count'); /* "-c, --count Int description: number of things example: cmd --count 2 "*/ ``` ## Settings Format When your `require('optionator')`, you get a function that takes in a settings object. This object has the type: { prepend: String, append: String, options: [{heading: String} | { option: String, alias: [String] | String, type: String, enum: [String], default: String, restPositional: Boolean, required: Boolean, overrideRequired: Boolean, dependsOn: [String] | String, concatRepeatedArrays: Boolean | (Boolean, Object), mergeRepeatedObjects: Boolean, description: String, longDescription: String, example: [String] | String }], helpStyle: { aliasSeparator: String, typeSeparator: String, descriptionSeparator: String, initialIndent: Int, secondaryIndent: Int, maxPadFactor: Number }, mutuallyExclusive: [[String | [String]]], concatRepeatedArrays: Boolean | (Boolean, Object), // deprecated, set in defaults object mergeRepeatedObjects: Boolean, // deprecated, set in defaults object positionalAnywhere: Boolean, typeAliases: Object, defaults: Object } All of the properties are optional (the `Maybe` has been excluded for brevities sake), except for having either `heading: String` or `option: String` in each object in the `options` array. ### Top Level Properties * `prepend` is an optional string to be placed before the options in the help text * `append` is an optional string to be placed after the options in the help text * `options` is a required array specifying your options and headings, the options and headings will be displayed in the order specified * `helpStyle` is an optional object which enables you to change the default appearance of some aspects of the help text * `mutuallyExclusive` is an optional array of arrays of either strings or arrays of strings. The top level array is a list of rules, each rule is a list of elements - each element can be either a string (the name of an option), or a list of strings (a group of option names) - there will be an error if more than one element is present * `concatRepeatedArrays` see description under the "Option Properties" heading - use at the top level is deprecated, if you want to set this for all options, use the `defaults` property * `mergeRepeatedObjects` see description under the "Option Properties" heading - use at the top level is deprecated, if you want to set this for all options, use the `defaults` property * `positionalAnywhere` is an optional boolean (defaults to `true`) - when `true` it allows positional arguments anywhere, when `false`, all arguments after the first positional one are taken to be positional as well, even if they look like a flag. For example, with `positionalAnywhere: false`, the arguments `--flag --boom 12 --crack` would have two positional arguments: `12` and `--crack` * `typeAliases` is an optional object, it allows you to set aliases for types, eg. `{Path: 'String'}` would allow you to use the type `Path` as an alias for the type `String` * `defaults` is an optional object following the option properties format, which specifies default values for all options. A default will be overridden if manually set. For example, you can do `default: { type: "String" }` to set the default type of all options to `String`, and then override that default in an individual option by setting the `type` property #### Heading Properties * `heading` a required string, the name of the heading #### Option Properties * `option` the required name of the option - use dash-case, without the leading dashes * `alias` is an optional string or array of strings which specify any aliases for the option * `type` is a required string in the [type check](https://github.com/gkz/type-check) [format](https://github.com/gkz/type-check#type-format), this will be used to cast the inputted value and validate it * `enum` is an optional array of strings, each string will be parsed by [levn](https://github.com/gkz/levn) - the argument value must be one of the resulting values - each potential value must validate against the specified `type` * `default` is a optional string, which will be parsed by [levn](https://github.com/gkz/levn) and used as the default value if none is set - the value must validate against the specified `type` * `restPositional` is an optional boolean - if set to `true`, everything after the option will be taken to be a positional argument, even if it looks like a named argument * `required` is an optional boolean - if set to `true`, the option parsing will fail if the option is not defined * `overrideRequired` is a optional boolean - if set to `true` and the option is used, and there is another option which is required but not set, it will override the need for the required option and there will be no error - this is useful if you have required options and want to use `--help` or `--version` flags * `concatRepeatedArrays` is an optional boolean or tuple with boolean and options object (defaults to `false`) - when set to `true` and an option contains an array value and is repeated, the subsequent values for the flag will be appended rather than overwriting the original value - eg. option `g` of type `[String]`: `-g a -g b -g c,d` will result in `['a','b','c','d']` You can supply an options object by giving the following value: `[true, options]`. The one currently supported option is `oneValuePerFlag`, this only allows one array value per flag. This is useful if your potential values contain a comma. * `mergeRepeatedObjects` is an optional boolean (defaults to `false`) - when set to `true` and an option contains an object value and is repeated, the subsequent values for the flag will be merged rather than overwriting the original value - eg. option `g` of type `Object`: `-g a:1 -g b:2 -g c:3,d:4` will result in `{a: 1, b: 2, c: 3, d: 4}` * `dependsOn` is an optional string or array of strings - if simply a string (the name of another option), it will make sure that that other option is set, if an array of strings, depending on whether `'and'` or `'or'` is first, it will either check whether all (`['and', 'option-a', 'option-b']`), or at least one (`['or', 'option-a', 'option-b']`) other options are set * `description` is an optional string, which will be displayed next to the option in the help text * `longDescription` is an optional string, it will be displayed instead of the `description` when `generateHelpForOption` is used * `example` is an optional string or array of strings with example(s) for the option - these will be displayed when `generateHelpForOption` is used #### Help Style Properties * `aliasSeparator` is an optional string, separates multiple names from each other - default: ' ,' * `typeSeparator` is an optional string, separates the type from the names - default: ' ' * `descriptionSeparator` is an optional string , separates the description from the padded name and type - default: ' ' * `initialIndent` is an optional int - the amount of indent for options - default: 2 * `secondaryIndent` is an optional int - the amount of indent if wrapped fully (in addition to the initial indent) - default: 4 * `maxPadFactor` is an optional number - affects the default level of padding for the names/type, it is multiplied by the average of the length of the names/type - default: 1.5 ## Argument Format At the highest level there are two types of arguments: named, and positional. Name arguments of any length are prefixed with `--` (eg. `--go`), and those of one character may be prefixed with either `--` or `-` (eg. `-g`). There are two types of named arguments: boolean flags (eg. `--problemo`, `-p`) which take no value and result in a `true` if they are present, the falsey `undefined` if they are not present, or `false` if present and explicitly prefixed with `no` (eg. `--no-problemo`). Named arguments with values (eg. `--tseries 800`, `-t 800`) are the other type. If the option has a type `Boolean` it will automatically be made into a boolean flag. Any other type results in a named argument that takes a value. For more information about how to properly set types to get the value you want, take a look at the [type check](https://github.com/gkz/type-check) and [levn](https://github.com/gkz/levn) pages. You can group single character arguments that use a single `-`, however all except the last must be boolean flags (which take no value). The last may be a boolean flag, or an argument which takes a value - eg. `-ba 2` is equivalent to `-b -a 2`. Positional arguments are all those values which do not fall under the above - they can be anywhere, not just at the end. For example, in `cmd -b one -a 2 two` where `b` is a boolean flag, and `a` has the type `Number`, there are two positional arguments, `one` and `two`. Everything after an `--` is positional, even if it looks like a named argument. You may optionally use `=` to separate option names from values, for example: `--count=2`. If you specify the option `NUM`, then any argument using a single `-` followed by a number will be valid and will set the value of `NUM`. Eg. `-2` will be parsed into `NUM: 2`. If duplicate named arguments are present, the last one will be taken. ## Technical About `optionator` is written in [LiveScript](http://livescript.net/) - a language that compiles to JavaScript. It uses [levn](https://github.com/gkz/levn) to cast arguments to their specified type, and uses [type-check](https://github.com/gkz/type-check) to validate values. It also uses the [prelude.ls](http://preludels.com/) library. # isobject [](https://www.npmjs.com/package/isobject) [](https://npmjs.org/package/isobject) [](https://travis-ci.org/jonschlinkert/isobject) Returns true if the value is an object and not an array or null. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install isobject --save ``` Use [is-plain-object](https://github.com/jonschlinkert/is-plain-object) if you want only objects that are created by the `Object` constructor. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install isobject ``` Install with [bower](http://bower.io/) ```sh $ bower install isobject ``` ## Usage ```js var isObject = require('isobject'); ``` **True** All of the following return `true`: ```js isObject({}); isObject(Object.create({})); isObject(Object.create(Object.prototype)); isObject(Object.create(null)); isObject({}); isObject(new Foo); isObject(/foo/); ``` **False** All of the following return `false`: ```js isObject(); isObject(function () {}); isObject(1); isObject([]); isObject(undefined); isObject(null); ``` ## Related projects You might also be interested in these projects: [merge-deep](https://www.npmjs.com/package/merge-deep): Recursively merge values in a javascript object. | [homepage](https://github.com/jonschlinkert/merge-deep) * [extend-shallow](https://www.npmjs.com/package/extend-shallow): Extend an object with the properties of additional objects. node.js/javascript util. | [homepage](https://github.com/jonschlinkert/extend-shallow) * [is-plain-object](https://www.npmjs.com/package/is-plain-object): Returns true if an object was created by the `Object` constructor. | [homepage](https://github.com/jonschlinkert/is-plain-object) * [kind-of](https://www.npmjs.com/package/kind-of): Get the native type of a value. | [homepage](https://github.com/jonschlinkert/kind-of) ## Contributing Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](https://github.com/jonschlinkert/isobject/issues/new). ## Building docs Generate readme and API documentation with [verb](https://github.com/verbose/verb): ```sh $ npm install verb && npm run docs ``` Or, if [verb](https://github.com/verbose/verb) is installed globally: ```sh $ verb ``` ## Running tests Install dev dependencies: ```sh $ npm install -d && npm test ``` ## Author **Jon Schlinkert** * [github/jonschlinkert](https://github.com/jonschlinkert) * [twitter/jonschlinkert](http://twitter.com/jonschlinkert) ## License Copyright © 2016, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT license](https://github.com/jonschlinkert/isobject/blob/master/LICENSE). *** _This file was generated by [verb](https://github.com/verbose/verb), v0.9.0, on April 25, 2016._ # pbkdf2 [](https://www.npmjs.org/package/pbkdf2) [](https://travis-ci.org/crypto-browserify/pbkdf2) [](https://david-dm.org/crypto-browserify/pbkdf2#info=dependencies) [](https://github.com/feross/standard) This library provides the functionality of PBKDF2 with the ability to use any supported hashing algorithm returned from `crypto.getHashes()` ## Usage ```js var pbkdf2 = require('pbkdf2') var derivedKey = pbkdf2.pbkdf2Sync('password', 'salt', 1, 32, 'sha512') ... ``` For more information on the API, please see the relevant [Node documentation](https://nodejs.org/api/crypto.html#crypto_crypto_pbkdf2_password_salt_iterations_keylen_digest_callback). For high performance, use the `async` variant (`pbkdf2.pbkdf2`), not `pbkdf2.pbkdf2Sync`, this variant has the oppurtunity to use `window.crypto.subtle` when browserified. ## Credits This module is a derivative of [cryptocoinjs/pbkdf2-sha256](https://github.com/cryptocoinjs/pbkdf2-sha256/), so thanks to [JP Richardson](https://github.com/jprichardson/) for laying the ground work. Thank you to [FangDun Cai](https://github.com/fundon) for donating the package name on npm, if you're looking for his previous module it is located at [fundon/pbkdf2](https://github.com/fundon/pbkdf2). # set-blocking [](https://travis-ci.org/yargs/set-blocking) [](https://www.npmjs.com/package/set-blocking) [](https://coveralls.io/r/yargs/set-blocking?branch=master) [](https://github.com/conventional-changelog/standard-version) set blocking `stdio` and `stderr` ensuring that terminal output does not truncate. ```js const setBlocking = require('set-blocking') setBlocking(true) console.log(someLargeStringToOutput) ``` ## Historical Context/Word of Warning This was created as a shim to address the bug discussed in [node #6456](https://github.com/nodejs/node/issues/6456). This bug crops up on newer versions of Node.js (`0.12+`), truncating terminal output. You should be mindful of the side-effects caused by using `set-blocking`: * if your module sets blocking to `true`, it will effect other modules consuming your library. In [yargs](https://github.com/yargs/yargs/blob/master/yargs.js#L653) we only call `setBlocking(true)` once we already know we are about to call `process.exit(code)`. * this patch will not apply to subprocesses spawned with `isTTY = true`, this is the [default `spawn()` behavior](https://nodejs.org/api/child_process.html#child_process_child_process_spawn_command_args_options). ## License ISC # Polyfill for `Object.setPrototypeOf` [](https://npmjs.org/package/setprototypeof) [](https://npmjs.org/package/setprototypeof) [](https://github.com/standard/standard) A simple cross platform implementation to set the prototype of an instianted object. Supports all modern browsers and at least back to IE8. ## Usage: ``` $ npm install --save setprototypeof ``` ```javascript var setPrototypeOf = require('setprototypeof') var obj = {} setPrototypeOf(obj, { foo: function () { return 'bar' } }) obj.foo() // bar ``` TypeScript is also supported: ```typescript import setPrototypeOf from 'setprototypeof' ``` # lru cache A cache object that deletes the least-recently-used items. [](https://travis-ci.org/isaacs/node-lru-cache) [](https://coveralls.io/github/isaacs/node-lru-cache) ## Installation: ```javascript npm install lru-cache --save ``` ## Usage: ```javascript var LRU = require("lru-cache") , options = { max: 500 , length: function (n, key) { return n * 2 + key.length } , dispose: function (key, n) { n.close() } , maxAge: 1000 * 60 * 60 } , cache = new LRU(options) , otherCache = new LRU(50) // sets just the max size cache.set("key", "value") cache.get("key") // "value" // non-string keys ARE fully supported // but note that it must be THE SAME object, not // just a JSON-equivalent object. var someObject = { a: 1 } cache.set(someObject, 'a value') // Object keys are not toString()-ed cache.set('[object Object]', 'a different value') assert.equal(cache.get(someObject), 'a value') // A similar object with same keys/values won't work, // because it's a different object identity assert.equal(cache.get({ a: 1 }), undefined) cache.reset() // empty the cache ``` If you put more stuff in it, then items will fall out. If you try to put an oversized thing in it, then it'll fall out right away. ## Options * `max` The maximum size of the cache, checked by applying the length function to all values in the cache. Not setting this is kind of silly, since that's the whole purpose of this lib, but it defaults to `Infinity`. Setting it to a non-number or negative number will throw a `TypeError`. Setting it to 0 makes it be `Infinity`. * `maxAge` Maximum age in ms. Items are not pro-actively pruned out as they age, but if you try to get an item that is too old, it'll drop it and return undefined instead of giving it to you. Setting this to a negative value will make everything seem old! Setting it to a non-number will throw a `TypeError`. * `length` Function that is used to calculate the length of stored items. If you're storing strings or buffers, then you probably want to do something like `function(n, key){return n.length}`. The default is `function(){return 1}`, which is fine if you want to store `max` like-sized things. The item is passed as the first argument, and the key is passed as the second argumnet. * `dispose` Function that is called on items when they are dropped from the cache. This can be handy if you want to close file descriptors or do other cleanup tasks when items are no longer accessible. Called with `key, value`. It's called *before* actually removing the item from the internal cache, so if you want to immediately put it back in, you'll have to do that in a `nextTick` or `setTimeout` callback or it won't do anything. * `stale` By default, if you set a `maxAge`, it'll only actually pull stale items out of the cache when you `get(key)`. (That is, it's not pre-emptively doing a `setTimeout` or anything.) If you set `stale:true`, it'll return the stale value before deleting it. If you don't set this, then it'll return `undefined` when you try to get a stale entry, as if it had already been deleted. * `noDisposeOnSet` By default, if you set a `dispose()` method, then it'll be called whenever a `set()` operation overwrites an existing key. If you set this option, `dispose()` will only be called when a key falls out of the cache, not when it is overwritten. * `updateAgeOnGet` When using time-expiring entries with `maxAge`, setting this to `true` will make each item's effective time update to the current time whenever it is retrieved from cache, causing it to not expire. (It can still fall out of cache based on recency of use, of course.) ## API * `set(key, value, maxAge)` * `get(key) => value` Both of these will update the "recently used"-ness of the key. They do what you think. `maxAge` is optional and overrides the cache `maxAge` option if provided. If the key is not found, `get()` will return `undefined`. The key and val can be any value. * `peek(key)` Returns the key value (or `undefined` if not found) without updating the "recently used"-ness of the key. (If you find yourself using this a lot, you *might* be using the wrong sort of data structure, but there are some use cases where it's handy.) * `del(key)` Deletes a key out of the cache. * `reset()` Clear the cache entirely, throwing away all values. * `has(key)` Check if a key is in the cache, without updating the recent-ness or deleting it for being stale. * `forEach(function(value,key,cache), [thisp])` Just like `Array.prototype.forEach`. Iterates over all the keys in the cache, in order of recent-ness. (Ie, more recently used items are iterated over first.) * `rforEach(function(value,key,cache), [thisp])` The same as `cache.forEach(...)` but items are iterated over in reverse order. (ie, less recently used items are iterated over first.) * `keys()` Return an array of the keys in the cache. * `values()` Return an array of the values in the cache. * `length` Return total length of objects in cache taking into account `length` options function. * `itemCount` Return total quantity of objects currently in cache. Note, that `stale` (see options) items are returned as part of this item count. * `dump()` Return an array of the cache entries ready for serialization and usage with 'destinationCache.load(arr)`. * `load(cacheEntriesArray)` Loads another cache entries array, obtained with `sourceCache.dump()`, into the cache. The destination cache is reset before loading new entries * `prune()` Manually iterates over the entire cache proactively pruning old entries node-bindings ============= ### Helper module for loading your native module's `.node` file This is a helper module for authors of Node.js native addon modules. It is basically the "swiss army knife" of `require()`ing your native module's `.node` file. Throughout the course of Node's native addon history, addons have ended up being compiled in a variety of different places, depending on which build tool and which version of node was used. To make matters worse, now the `gyp` build tool can produce either a __Release__ or __Debug__ build, each being built into different locations. This module checks _all_ the possible locations that a native addon would be built at, and returns the first one that loads successfully. Installation ------------ Install with `npm`: ``` bash $ npm install --save bindings ``` Or add it to the `"dependencies"` section of your `package.json` file. Example ------- `require()`ing the proper bindings file for the current node version, platform and architecture is as simple as: ``` js var bindings = require('bindings')('binding.node') // Use your bindings defined in your C files bindings.your_c_function() ``` Nice Error Output ----------------- When the `.node` file could not be loaded, `node-bindings` throws an Error with a nice error message telling you exactly what was tried. You can also check the `err.tries` Array property. ``` Error: Could not load the bindings file. Tried: → /Users/nrajlich/ref/build/binding.node → /Users/nrajlich/ref/build/Debug/binding.node → /Users/nrajlich/ref/build/Release/binding.node → /Users/nrajlich/ref/out/Debug/binding.node → /Users/nrajlich/ref/Debug/binding.node → /Users/nrajlich/ref/out/Release/binding.node → /Users/nrajlich/ref/Release/binding.node → /Users/nrajlich/ref/build/default/binding.node → /Users/nrajlich/ref/compiled/0.8.2/darwin/x64/binding.node at bindings (/Users/nrajlich/ref/node_modules/bindings/bindings.js:84:13) at Object.<anonymous> (/Users/nrajlich/ref/lib/ref.js:5:47) at Module._compile (module.js:449:26) at Object.Module._extensions..js (module.js:467:10) at Module.load (module.js:356:32) at Function.Module._load (module.js:312:12) ... ``` The searching for the `.node` file will originate from the first directory in which has a `package.json` file is found. License ------- (The MIT License) Copyright (c) 2012 Nathan Rajlich &lt;nathan@tootallnate.net&gt; Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # micromatch [](https://www.npmjs.com/package/micromatch) [](https://npmjs.org/package/micromatch) [](https://npmjs.org/package/micromatch) [](https://github.com/micromatch/micromatch/actions/workflows/test.yml) > Glob matching for javascript/node.js. A replacement and faster alternative to minimatch and multimatch. Please consider following this project's author, [Jon Schlinkert](https://github.com/jonschlinkert), and consider starring the project to show your :heart: and support. ## Table of Contents <details> <summary><strong>Details</strong></summary> - [Install](#install) - [Quickstart](#quickstart) - [Why use micromatch?](#why-use-micromatch) * [Matching features](#matching-features) - [Switching to micromatch](#switching-to-micromatch) * [From minimatch](#from-minimatch) * [From multimatch](#from-multimatch) - [API](#api) - [Options](#options) - [Options Examples](#options-examples) * [options.basename](#optionsbasename) * [options.bash](#optionsbash) * [options.expandRange](#optionsexpandrange) * [options.format](#optionsformat) * [options.ignore](#optionsignore) * [options.matchBase](#optionsmatchbase) * [options.noextglob](#optionsnoextglob) * [options.nonegate](#optionsnonegate) * [options.noglobstar](#optionsnoglobstar) * [options.nonull](#optionsnonull) * [options.nullglob](#optionsnullglob) * [options.onIgnore](#optionsonignore) * [options.onMatch](#optionsonmatch) * [options.onResult](#optionsonresult) * [options.posixSlashes](#optionsposixslashes) * [options.unescape](#optionsunescape) - [Extended globbing](#extended-globbing) * [Extglobs](#extglobs) * [Braces](#braces) * [Regex character classes](#regex-character-classes) * [Regex groups](#regex-groups) * [POSIX bracket expressions](#posix-bracket-expressions) - [Notes](#notes) * [Bash 4.3 parity](#bash-43-parity) * [Backslashes](#backslashes) - [Benchmarks](#benchmarks) * [Running benchmarks](#running-benchmarks) * [Latest results](#latest-results) - [Contributing](#contributing) - [About](#about) </details> ## Install Install with [npm](https://www.npmjs.com/) (requires [Node.js](https://nodejs.org/en/) >=8.6): ```sh $ npm install --save micromatch ``` ## Quickstart ```js const micromatch = require('micromatch'); // micromatch(list, patterns[, options]); ``` The [main export](#micromatch) takes a list of strings and one or more glob patterns: ```js console.log(micromatch(['foo', 'bar', 'baz', 'qux'], ['f*', 'b*'])) //=> ['foo', 'bar', 'baz'] console.log(micromatch(['foo', 'bar', 'baz', 'qux'], ['*', '!b*'])) //=> ['foo', 'qux'] ``` Use [.isMatch()](#ismatch) to for boolean matching: ```js console.log(micromatch.isMatch('foo', 'f*')) //=> true console.log(micromatch.isMatch('foo', ['b*', 'f*'])) //=> true ``` [Switching](#switching-to-micromatch) from minimatch and multimatch is easy! <br> ## Why use micromatch? > micromatch is a [replacement](#switching-to-micromatch) for minimatch and multimatch * Supports all of the same matching features as [minimatch](https://github.com/isaacs/minimatch) and [multimatch](https://github.com/sindresorhus/multimatch) * More complete support for the Bash 4.3 specification than minimatch and multimatch. Micromatch passes _all of the spec tests_ from bash, including some that bash still fails. * **Fast & Performant** - Loads in about 5ms and performs [fast matches](#benchmarks). * **Glob matching** - Using wildcards (`*` and `?`), globstars (`**`) for nested directories * **[Advanced globbing](#extended-globbing)** - Supports [extglobs](#extglobs), [braces](#braces-1), and [POSIX brackets](#posix-bracket-expressions), and support for escaping special characters with `\` or quotes. * **Accurate** - Covers more scenarios [than minimatch](https://github.com/yarnpkg/yarn/pull/3339) * **Well tested** - More than 5,000 [test assertions](./test) * **Windows support** - More reliable windows support than minimatch and multimatch. * **[Safe](https://github.com/micromatch/braces#braces-is-safe)** - Micromatch is not subject to DoS with brace patterns like minimatch and multimatch. ### Matching features * Support for multiple glob patterns (no need for wrappers like multimatch) * Wildcards (`**`, `*.js`) * Negation (`'!a/*.js'`, `'*!(b).js'`) * [extglobs](#extglobs) (`+(x|y)`, `!(a|b)`) * [POSIX character classes](#posix-bracket-expressions) (`[[:alpha:][:digit:]]`) * [brace expansion](https://github.com/micromatch/braces) (`foo/{1..5}.md`, `bar/{a,b,c}.js`) * regex character classes (`foo-[1-5].js`) * regex logical "or" (`foo/(abc|xyz).js`) You can mix and match these features to create whatever patterns you need! ## Switching to micromatch _(There is one notable difference between micromatch and minimatch in regards to how backslashes are handled. See [the notes about backslashes](#backslashes) for more information.)_ ### From minimatch Use [micromatch.isMatch()](#ismatch) instead of `minimatch()`: ```js console.log(micromatch.isMatch('foo', 'b*')); //=> false ``` Use [micromatch.match()](#match) instead of `minimatch.match()`: ```js console.log(micromatch.match(['foo', 'bar'], 'b*')); //=> 'bar' ``` ### From multimatch Same signature: ```js console.log(micromatch(['foo', 'bar', 'baz'], ['f*', '*z'])); //=> ['foo', 'baz'] ``` ## API **Params** * `list` **{String|Array<string>}**: List of strings to match. * `patterns` **{String|Array<string>}**: One or more glob patterns to use for matching. * `options` **{Object}**: See available [options](#options) * `returns` **{Array}**: Returns an array of matches **Example** ```js const mm = require('micromatch'); // mm(list, patterns[, options]); console.log(mm(['a.js', 'a.txt'], ['*.js'])); //=> [ 'a.js' ] ``` ### [.matcher](index.js#L104) Returns a matcher function from the given glob `pattern` and `options`. The returned function takes a string to match as its only argument and returns true if the string is a match. **Params** * `pattern` **{String}**: Glob pattern * `options` **{Object}** * `returns` **{Function}**: Returns a matcher function. **Example** ```js const mm = require('micromatch'); // mm.matcher(pattern[, options]); const isMatch = mm.matcher('*.!(*a)'); console.log(isMatch('a.a')); //=> false console.log(isMatch('a.b')); //=> true ``` ### [.isMatch](index.js#L123) Returns true if **any** of the given glob `patterns` match the specified `string`. **Params** * `str` **{String}**: The string to test. * `patterns` **{String|Array}**: One or more glob patterns to use for matching. * `[options]` **{Object}**: See available [options](#options). * `returns` **{Boolean}**: Returns true if any patterns match `str` **Example** ```js const mm = require('micromatch'); // mm.isMatch(string, patterns[, options]); console.log(mm.isMatch('a.a', ['b.*', '*.a'])); //=> true console.log(mm.isMatch('a.a', 'b.*')); //=> false ``` ### [.not](index.js#L148) Returns a list of strings that _**do not match any**_ of the given `patterns`. **Params** * `list` **{Array}**: Array of strings to match. * `patterns` **{String|Array}**: One or more glob pattern to use for matching. * `options` **{Object}**: See available [options](#options) for changing how matches are performed * `returns` **{Array}**: Returns an array of strings that **do not match** the given patterns. **Example** ```js const mm = require('micromatch'); // mm.not(list, patterns[, options]); console.log(mm.not(['a.a', 'b.b', 'c.c'], '*.a')); //=> ['b.b', 'c.c'] ``` ### [.contains](index.js#L188) Returns true if the given `string` contains the given pattern. Similar to [.isMatch](#isMatch) but the pattern can match any part of the string. **Params** * `str` **{String}**: The string to match. * `patterns` **{String|Array}**: Glob pattern to use for matching. * `options` **{Object}**: See available [options](#options) for changing how matches are performed * `returns` **{Boolean}**: Returns true if any of the patterns matches any part of `str`. **Example** ```js var mm = require('micromatch'); // mm.contains(string, pattern[, options]); console.log(mm.contains('aa/bb/cc', '*b')); //=> true console.log(mm.contains('aa/bb/cc', '*d')); //=> false ``` ### [.matchKeys](index.js#L230) Filter the keys of the given object with the given `glob` pattern and `options`. Does not attempt to match nested keys. If you need this feature, use [glob-object](https://github.com/jonschlinkert/glob-object) instead. **Params** * `object` **{Object}**: The object with keys to filter. * `patterns` **{String|Array}**: One or more glob patterns to use for matching. * `options` **{Object}**: See available [options](#options) for changing how matches are performed * `returns` **{Object}**: Returns an object with only keys that match the given patterns. **Example** ```js const mm = require('micromatch'); // mm.matchKeys(object, patterns[, options]); const obj = { aa: 'a', ab: 'b', ac: 'c' }; console.log(mm.matchKeys(obj, '*b')); //=> { ab: 'b' } ``` ### [.some](index.js#L259) Returns true if some of the strings in the given `list` match any of the given glob `patterns`. **Params** * `list` **{String|Array}**: The string or array of strings to test. Returns as soon as the first match is found. * `patterns` **{String|Array}**: One or more glob patterns to use for matching. * `options` **{Object}**: See available [options](#options) for changing how matches are performed * `returns` **{Boolean}**: Returns true if any `patterns` matches any of the strings in `list` **Example** ```js const mm = require('micromatch'); // mm.some(list, patterns[, options]); console.log(mm.some(['foo.js', 'bar.js'], ['*.js', '!foo.js'])); // true console.log(mm.some(['foo.js'], ['*.js', '!foo.js'])); // false ``` ### [.every](index.js#L295) Returns true if every string in the given `list` matches any of the given glob `patterns`. **Params** * `list` **{String|Array}**: The string or array of strings to test. * `patterns` **{String|Array}**: One or more glob patterns to use for matching. * `options` **{Object}**: See available [options](#options) for changing how matches are performed * `returns` **{Boolean}**: Returns true if all `patterns` matches all of the strings in `list` **Example** ```js const mm = require('micromatch'); // mm.every(list, patterns[, options]); console.log(mm.every('foo.js', ['foo.js'])); // true console.log(mm.every(['foo.js', 'bar.js'], ['*.js'])); // true console.log(mm.every(['foo.js', 'bar.js'], ['*.js', '!foo.js'])); // false console.log(mm.every(['foo.js'], ['*.js', '!foo.js'])); // false ``` ### [.all](index.js#L334) Returns true if **all** of the given `patterns` match the specified string. **Params** * `str` **{String|Array}**: The string to test. * `patterns` **{String|Array}**: One or more glob patterns to use for matching. * `options` **{Object}**: See available [options](#options) for changing how matches are performed * `returns` **{Boolean}**: Returns true if any patterns match `str` **Example** ```js const mm = require('micromatch'); // mm.all(string, patterns[, options]); console.log(mm.all('foo.js', ['foo.js'])); // true console.log(mm.all('foo.js', ['*.js', '!foo.js'])); // false console.log(mm.all('foo.js', ['*.js', 'foo.js'])); // true console.log(mm.all('foo.js', ['*.js', 'f*', '*o*', '*o.js'])); // true ``` ### [.capture](index.js#L361) Returns an array of matches captured by `pattern` in `string, or`null` if the pattern did not match. **Params** * `glob` **{String}**: Glob pattern to use for matching. * `input` **{String}**: String to match * `options` **{Object}**: See available [options](#options) for changing how matches are performed * `returns` **{Array|null}**: Returns an array of captures if the input matches the glob pattern, otherwise `null`. **Example** ```js const mm = require('micromatch'); // mm.capture(pattern, string[, options]); console.log(mm.capture('test/*.js', 'test/foo.js')); //=> ['foo'] console.log(mm.capture('test/*.js', 'foo/bar.css')); //=> null ``` ### [.makeRe](index.js#L387) Create a regular expression from the given glob `pattern`. **Params** * `pattern` **{String}**: A glob pattern to convert to regex. * `options` **{Object}** * `returns` **{RegExp}**: Returns a regex created from the given pattern. **Example** ```js const mm = require('micromatch'); // mm.makeRe(pattern[, options]); console.log(mm.makeRe('*.js')); //=> /^(?:(\.[\\\/])?(?!\.)(?=.)[^\/]*?\.js)$/ ``` ### [.scan](index.js#L403) Scan a glob pattern to separate the pattern into segments. Used by the [split](#split) method. **Params** * `pattern` **{String}** * `options` **{Object}** * `returns` **{Object}**: Returns an object with **Example** ```js const mm = require('micromatch'); const state = mm.scan(pattern[, options]); ``` ### [.parse](index.js#L419) Parse a glob pattern to create the source string for a regular expression. **Params** * `glob` **{String}** * `options` **{Object}** * `returns` **{Object}**: Returns an object with useful properties and output to be used as regex source string. **Example** ```js const mm = require('micromatch'); const state = mm.parse(pattern[, options]); ``` ### [.braces](index.js#L446) Process the given brace `pattern`. **Params** * `pattern` **{String}**: String with brace pattern to process. * `options` **{Object}**: Any [options](#options) to change how expansion is performed. See the [braces](https://github.com/micromatch/braces) library for all available options. * `returns` **{Array}** **Example** ```js const { braces } = require('micromatch'); console.log(braces('foo/{a,b,c}/bar')); //=> [ 'foo/(a|b|c)/bar' ] console.log(braces('foo/{a,b,c}/bar', { expand: true })); //=> [ 'foo/a/bar', 'foo/b/bar', 'foo/c/bar' ] ``` ## Options | **Option** | **Type** | **Default value** | **Description** | | --- | --- | --- | --- | | `basename` | `boolean` | `false` | If set, then patterns without slashes will be matched against the basename of the path if it contains slashes. For example, `a?b` would match the path `/xyz/123/acb`, but not `/xyz/acb/123`. | | `bash` | `boolean` | `false` | Follow bash matching rules more strictly - disallows backslashes as escape characters, and treats single stars as globstars (`**`). | | `capture` | `boolean` | `undefined` | Return regex matches in supporting methods. | | `contains` | `boolean` | `undefined` | Allows glob to match any part of the given string(s). | | `cwd` | `string` | `process.cwd()` | Current working directory. Used by `picomatch.split()` | | `debug` | `boolean` | `undefined` | Debug regular expressions when an error is thrown. | | `dot` | `boolean` | `false` | Match dotfiles. Otherwise dotfiles are ignored unless a `.` is explicitly defined in the pattern. | | `expandRange` | `function` | `undefined` | Custom function for expanding ranges in brace patterns, such as `{a..z}`. The function receives the range values as two arguments, and it must return a string to be used in the generated regex. It's recommended that returned strings be wrapped in parentheses. This option is overridden by the `expandBrace` option. | | `failglob` | `boolean` | `false` | Similar to the `failglob` behavior in Bash, throws an error when no matches are found. Based on the bash option of the same name. | | `fastpaths` | `boolean` | `true` | To speed up processing, full parsing is skipped for a handful common glob patterns. Disable this behavior by setting this option to `false`. | | `flags` | `boolean` | `undefined` | Regex flags to use in the generated regex. If defined, the `nocase` option will be overridden. | | [format](#optionsformat) | `function` | `undefined` | Custom function for formatting the returned string. This is useful for removing leading slashes, converting Windows paths to Posix paths, etc. | | `ignore` | `array\|string` | `undefined` | One or more glob patterns for excluding strings that should not be matched from the result. | | `keepQuotes` | `boolean` | `false` | Retain quotes in the generated regex, since quotes may also be used as an alternative to backslashes. | | `literalBrackets` | `boolean` | `undefined` | When `true`, brackets in the glob pattern will be escaped so that only literal brackets will be matched. | | `lookbehinds` | `boolean` | `true` | Support regex positive and negative lookbehinds. Note that you must be using Node 8.1.10 or higher to enable regex lookbehinds. | | `matchBase` | `boolean` | `false` | Alias for `basename` | | `maxLength` | `boolean` | `65536` | Limit the max length of the input string. An error is thrown if the input string is longer than this value. | | `nobrace` | `boolean` | `false` | Disable brace matching, so that `{a,b}` and `{1..3}` would be treated as literal characters. | | `nobracket` | `boolean` | `undefined` | Disable matching with regex brackets. | | `nocase` | `boolean` | `false` | Perform case-insensitive matching. Equivalent to the regex `i` flag. Note that this option is ignored when the `flags` option is defined. | | `nodupes` | `boolean` | `true` | Deprecated, use `nounique` instead. This option will be removed in a future major release. By default duplicates are removed. Disable uniquification by setting this option to false. | | `noext` | `boolean` | `false` | Alias for `noextglob` | | `noextglob` | `boolean` | `false` | Disable support for matching with [extglobs](#extglobs) (like `+(a\|b)`) | | `noglobstar` | `boolean` | `false` | Disable support for matching nested directories with globstars (`**`) | | `nonegate` | `boolean` | `false` | Disable support for negating with leading `!` | | `noquantifiers` | `boolean` | `false` | Disable support for regex quantifiers (like `a{1,2}`) and treat them as brace patterns to be expanded. | | [onIgnore](#optionsonIgnore) | `function` | `undefined` | Function to be called on ignored items. | | [onMatch](#optionsonMatch) | `function` | `undefined` | Function to be called on matched items. | | [onResult](#optionsonResult) | `function` | `undefined` | Function to be called on all items, regardless of whether or not they are matched or ignored. | | `posix` | `boolean` | `false` | Support [POSIX character classes](#posix-bracket-expressions) ("posix brackets"). | | `posixSlashes` | `boolean` | `undefined` | Convert all slashes in file paths to forward slashes. This does not convert slashes in the glob pattern itself | | `prepend` | `string` | `undefined` | String to prepend to the generated regex used for matching. | | `regex` | `boolean` | `false` | Use regular expression rules for `+` (instead of matching literal `+`), and for stars that follow closing parentheses or brackets (as in `)*` and `]*`). | | `strictBrackets` | `boolean` | `undefined` | Throw an error if brackets, braces, or parens are imbalanced. | | `strictSlashes` | `boolean` | `undefined` | When true, picomatch won't match trailing slashes with single stars. | | `unescape` | `boolean` | `undefined` | Remove preceding backslashes from escaped glob characters before creating the regular expression to perform matches. | | `unixify` | `boolean` | `undefined` | Alias for `posixSlashes`, for backwards compatitibility. | ## Options Examples ### options.basename Allow glob patterns without slashes to match a file path based on its basename. Same behavior as [minimatch](https://github.com/isaacs/minimatch) option `matchBase`. **Type**: `Boolean` **Default**: `false` **Example** ```js micromatch(['a/b.js', 'a/c.md'], '*.js'); //=> [] micromatch(['a/b.js', 'a/c.md'], '*.js', { basename: true }); //=> ['a/b.js'] ``` ### options.bash Enabled by default, this option enforces bash-like behavior with stars immediately following a bracket expression. Bash bracket expressions are similar to regex character classes, but unlike regex, a star following a bracket expression **does not repeat the bracketed characters**. Instead, the star is treated the same as any other star. **Type**: `Boolean` **Default**: `true` **Example** ```js const files = ['abc', 'ajz']; console.log(micromatch(files, '[a-c]*')); //=> ['abc', 'ajz'] console.log(micromatch(files, '[a-c]*', { bash: false })); ``` ### options.expandRange **Type**: `function` **Default**: `undefined` Custom function for expanding ranges in brace patterns. The [fill-range](https://github.com/jonschlinkert/fill-range) library is ideal for this purpose, or you can use custom code to do whatever you need. **Example** The following example shows how to create a glob that matches a numeric folder name between `01` and `25`, with leading zeros. ```js const fill = require('fill-range'); const regex = micromatch.makeRe('foo/{01..25}/bar', { expandRange(a, b) { return `(${fill(a, b, { toRegex: true })})`; } }); console.log(regex) //=> /^(?:foo\/((?:0[1-9]|1[0-9]|2[0-5]))\/bar)$/ console.log(regex.test('foo/00/bar')) // false console.log(regex.test('foo/01/bar')) // true console.log(regex.test('foo/10/bar')) // true console.log(regex.test('foo/22/bar')) // true console.log(regex.test('foo/25/bar')) // true console.log(regex.test('foo/26/bar')) // false ``` ### options.format **Type**: `function` **Default**: `undefined` Custom function for formatting strings before they're matched. **Example** ```js // strip leading './' from strings const format = str => str.replace(/^\.\//, ''); const isMatch = picomatch('foo/*.js', { format }); console.log(isMatch('./foo/bar.js')) //=> true ``` ### options.ignore String or array of glob patterns to match files to ignore. **Type**: `String|Array` **Default**: `undefined` ```js const isMatch = micromatch.matcher('*', { ignore: 'f*' }); console.log(isMatch('foo')) //=> false console.log(isMatch('bar')) //=> true console.log(isMatch('baz')) //=> true ``` ### options.matchBase Alias for [options.basename](#options-basename). ### options.noextglob Disable extglob support, so that [extglobs](#extglobs) are regarded as literal characters. **Type**: `Boolean` **Default**: `undefined` **Examples** ```js console.log(micromatch(['a/z', 'a/b', 'a/!(z)'], 'a/!(z)')); //=> ['a/b', 'a/!(z)'] console.log(micromatch(['a/z', 'a/b', 'a/!(z)'], 'a/!(z)', { noextglob: true })); //=> ['a/!(z)'] (matches only as literal characters) ``` ### options.nonegate Disallow negation (`!`) patterns, and treat leading `!` as a literal character to match. **Type**: `Boolean` **Default**: `undefined` ### options.noglobstar Disable matching with globstars (`**`). **Type**: `Boolean` **Default**: `undefined` ```js micromatch(['a/b', 'a/b/c', 'a/b/c/d'], 'a/**'); //=> ['a/b', 'a/b/c', 'a/b/c/d'] micromatch(['a/b', 'a/b/c', 'a/b/c/d'], 'a/**', {noglobstar: true}); //=> ['a/b'] ``` ### options.nonull Alias for [options.nullglob](#options-nullglob). ### options.nullglob If `true`, when no matches are found the actual (arrayified) glob pattern is returned instead of an empty array. Same behavior as [minimatch](https://github.com/isaacs/minimatch) option `nonull`. **Type**: `Boolean` **Default**: `undefined` ### options.onIgnore ```js const onIgnore = ({ glob, regex, input, output }) => { console.log({ glob, regex, input, output }); // { glob: '*', regex: /^(?:(?!\.)(?=.)[^\/]*?\/?)$/, input: 'foo', output: 'foo' } }; const isMatch = micromatch.matcher('*', { onIgnore, ignore: 'f*' }); isMatch('foo'); isMatch('bar'); isMatch('baz'); ``` ### options.onMatch ```js const onMatch = ({ glob, regex, input, output }) => { console.log({ input, output }); // { input: 'some\\path', output: 'some/path' } // { input: 'some\\path', output: 'some/path' } // { input: 'some\\path', output: 'some/path' } }; const isMatch = micromatch.matcher('**', { onMatch, posixSlashes: true }); isMatch('some\\path'); isMatch('some\\path'); isMatch('some\\path'); ``` ### options.onResult ```js const onResult = ({ glob, regex, input, output }) => { console.log({ glob, regex, input, output }); }; const isMatch = micromatch('*', { onResult, ignore: 'f*' }); isMatch('foo'); isMatch('bar'); isMatch('baz'); ``` ### options.posixSlashes Convert path separators on returned files to posix/unix-style forward slashes. Aliased as `unixify` for backwards compatibility. **Type**: `Boolean` **Default**: `true` on windows, `false` everywhere else. **Example** ```js console.log(micromatch.match(['a\\b\\c'], 'a/**')); //=> ['a/b/c'] console.log(micromatch.match(['a\\b\\c'], { posixSlashes: false })); //=> ['a\\b\\c'] ``` ### options.unescape Remove backslashes from escaped glob characters before creating the regular expression to perform matches. **Type**: `Boolean` **Default**: `undefined` **Example** In this example we want to match a literal `*`: ```js console.log(micromatch.match(['abc', 'a\\*c'], 'a\\*c')); //=> ['a\\*c'] console.log(micromatch.match(['abc', 'a\\*c'], 'a\\*c', { unescape: true })); //=> ['a*c'] ``` <br> <br> ## Extended globbing Micromatch supports the following extended globbing features. ### Extglobs Extended globbing, as described by the bash man page: | **pattern** | **regex equivalent** | **description** | | --- | --- | --- | | `?(pattern)` | `(pattern)?` | Matches zero or one occurrence of the given patterns | | `*(pattern)` | `(pattern)*` | Matches zero or more occurrences of the given patterns | | `+(pattern)` | `(pattern)+` | Matches one or more occurrences of the given patterns | | `@(pattern)` | `(pattern)` ^* | Matches one of the given patterns | | `!(pattern)` | N/A (equivalent regex is much more complicated) | Matches anything except one of the given patterns | ^{<strong>*</strong>} Note that `@` isn't a regex character. ### Braces Brace patterns can be used to match specific ranges or sets of characters. **Example** The pattern `{f,b}*/{1..3}/{b,q}*` would match any of following strings: ``` foo/1/bar foo/2/bar foo/3/bar baz/1/qux baz/2/qux baz/3/qux ``` Visit [braces](https://github.com/micromatch/braces) to see the full range of features and options related to brace expansion, or to create brace matching or expansion related issues. ### Regex character classes Given the list: `['a.js', 'b.js', 'c.js', 'd.js', 'E.js']`: * `[ac].js`: matches both `a` and `c`, returning `['a.js', 'c.js']` * `[b-d].js`: matches from `b` to `d`, returning `['b.js', 'c.js', 'd.js']` * `a/[A-Z].js`: matches and uppercase letter, returning `['a/E.md']` Learn about [regex character classes](http://www.regular-expressions.info/charclass.html). ### Regex groups Given `['a.js', 'b.js', 'c.js', 'd.js', 'E.js']`: * `(a|c).js`: would match either `a` or `c`, returning `['a.js', 'c.js']` * `(b|d).js`: would match either `b` or `d`, returning `['b.js', 'd.js']` * `(b|[A-Z]).js`: would match either `b` or an uppercase letter, returning `['b.js', 'E.js']` As with regex, parens can be nested, so patterns like `((a|b)|c)/b` will work. Although brace expansion might be friendlier to use, depending on preference. ### POSIX bracket expressions POSIX brackets are intended to be more user-friendly than regex character classes. This of course is in the eye of the beholder. **Example** ```js console.log(micromatch.isMatch('a1', '[[:alpha:][:digit:]]')) //=> true console.log(micromatch.isMatch('a1', '[[:alpha:][:alpha:]]')) //=> false ``` *** ## Notes ### Bash 4.3 parity Whenever possible matching behavior is based on behavior Bash 4.3, which is mostly consistent with minimatch. However, it's suprising how many edge cases and rabbit holes there are with glob matching, and since there is no real glob specification, and micromatch is more accurate than both Bash and minimatch, there are cases where best-guesses were made for behavior. In a few cases where Bash had no answers, we used wildmatch (used by git) as a fallback. ### Backslashes There is an important, notable difference between minimatch and micromatch _in regards to how backslashes are handled_ in glob patterns. * Micromatch exclusively and explicitly reserves backslashes for escaping characters in a glob pattern, even on windows, which is consistent with bash behavior. _More importantly, unescaping globs can result in unsafe regular expressions_. * Minimatch converts all backslashes to forward slashes, which means you can't use backslashes to escape any characters in your glob patterns. We made this decision for micromatch for a couple of reasons: * Consistency with bash conventions. * Glob patterns are not filepaths. They are a type of [regular language](https://en.wikipedia.org/wiki/Regular_language) that is converted to a JavaScript regular expression. Thus, when forward slashes are defined in a glob pattern, the resulting regular expression will match windows or POSIX path separators just fine. **A note about joining paths to globs** Note that when you pass something like `path.join('foo', '*')` to micromatch, you are creating a filepath and expecting it to still work as a glob pattern. This causes problems on windows, since the `path.sep` is `\\`. In other words, since `\\` is reserved as an escape character in globs, on windows `path.join('foo', '*')` would result in `foo\\*`, which tells micromatch to match `*` as a literal character. This is the same behavior as bash. To solve this, you might be inspired to do something like `'foo\\*'.replace(/\\/g, '/')`, but this causes another, potentially much more serious, problem. ## Benchmarks ### Running benchmarks Install dependencies for running benchmarks: ```sh $ cd bench && npm install ``` Run the benchmarks: ```sh $ npm run bench ``` ### Latest results As of March 24, 2022 (longer bars are better): ```sh # .makeRe star micromatch x 2,232,802 ops/sec ±2.34% (89 runs sampled)) minimatch x 781,018 ops/sec ±6.74% (92 runs sampled)) # .makeRe star; dot=true micromatch x 1,863,453 ops/sec ±0.74% (93 runs sampled) minimatch x 723,105 ops/sec ±0.75% (93 runs sampled) # .makeRe globstar micromatch x 1,624,179 ops/sec ±2.22% (91 runs sampled) minimatch x 1,117,230 ops/sec ±2.78% (86 runs sampled)) # .makeRe globstars micromatch x 1,658,642 ops/sec ±0.86% (92 runs sampled) minimatch x 741,224 ops/sec ±1.24% (89 runs sampled)) # .makeRe with leading star micromatch x 1,525,014 ops/sec ±1.63% (90 runs sampled) minimatch x 561,074 ops/sec ±3.07% (89 runs sampled) # .makeRe - braces micromatch x 172,478 ops/sec ±2.37% (78 runs sampled) minimatch x 96,087 ops/sec ±2.34% (88 runs sampled))) # .makeRe braces - range (expanded) micromatch x 26,973 ops/sec ±0.84% (89 runs sampled) minimatch x 3,023 ops/sec ±0.99% (90 runs sampled)) # .makeRe braces - range (compiled) micromatch x 152,892 ops/sec ±1.67% (83 runs sampled) minimatch x 992 ops/sec ±3.50% (89 runs sampled)d)) # .makeRe braces - nested ranges (expanded) micromatch x 15,816 ops/sec ±13.05% (80 runs sampled) minimatch x 2,953 ops/sec ±1.64% (91 runs sampled) # .makeRe braces - nested ranges (compiled) micromatch x 110,881 ops/sec ±1.85% (82 runs sampled) minimatch x 1,008 ops/sec ±1.51% (91 runs sampled) # .makeRe braces - set (compiled) micromatch x 134,930 ops/sec ±3.54% (63 runs sampled)) minimatch x 43,242 ops/sec ±0.60% (93 runs sampled) # .makeRe braces - nested sets (compiled) micromatch x 94,455 ops/sec ±1.74% (69 runs sampled)) minimatch x 27,720 ops/sec ±1.84% (93 runs sampled)) ``` ## Contributing All contributions are welcome! Please read [the contributing guide](.github/contributing.md) to get started. **Bug reports** Please create an issue if you encounter a bug or matching behavior that doesn't seem correct. If you find a matching-related issue, please: * [research existing issues first](../../issues) (open and closed) * visit the [GNU Bash documentation](https://www.gnu.org/software/bash/manual/) to see how Bash deals with the pattern * visit the [minimatch](https://github.com/isaacs/minimatch) documentation to cross-check expected behavior in node.js * if all else fails, since there is no real specification for globs we will probably need to discuss expected behavior and decide how to resolve it. which means any detail you can provide to help with this discussion would be greatly appreciated. **Platform issues** It's important to us that micromatch work consistently on all platforms. If you encounter any platform-specific matching or path related issues, please let us know (pull requests are also greatly appreciated). ## About <details> <summary><strong>Contributing</strong></summary> Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). Please read the [contributing guide](.github/contributing.md) for advice on opening issues, pull requests, and coding standards. </details> <details> <summary><strong>Running Tests</strong></summary> Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` </details> <details> <summary><strong>Building docs</strong></summary> _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` </details> ### Related projects You might also be interested in these projects: * [braces](https://www.npmjs.com/package/braces): Bash-like brace expansion, implemented in JavaScript. Safer than other brace expansion libs, with complete support… [more](https://github.com/micromatch/braces) | [homepage](https://github.com/micromatch/braces "Bash-like brace expansion, implemented in JavaScript. Safer than other brace expansion libs, with complete support for the Bash 4.3 braces specification, without sacrificing speed.") * [expand-brackets](https://www.npmjs.com/package/expand-brackets): Expand POSIX bracket expressions (character classes) in glob patterns. | [homepage](https://github.com/micromatch/expand-brackets "Expand POSIX bracket expressions (character classes) in glob patterns.") * [extglob](https://www.npmjs.com/package/extglob): Extended glob support for JavaScript. Adds (almost) the expressive power of regular expressions to glob… [more](https://github.com/micromatch/extglob) | [homepage](https://github.com/micromatch/extglob "Extended glob support for JavaScript. Adds (almost) the expressive power of regular expressions to glob patterns.") * [fill-range](https://www.npmjs.com/package/fill-range): Fill in a range of numbers or letters, optionally passing an increment or `step` to… [more](https://github.com/jonschlinkert/fill-range) | [homepage](https://github.com/jonschlinkert/fill-range "Fill in a range of numbers or letters, optionally passing an increment or `step` to use, or create a regex-compatible range with `options.toRegex`") * [nanomatch](https://www.npmjs.com/package/nanomatch): Fast, minimal glob matcher for node.js. Similar to micromatch, minimatch and multimatch, but complete Bash… [more](https://github.com/micromatch/nanomatch) | [homepage](https://github.com/micromatch/nanomatch "Fast, minimal glob matcher for node.js. Similar to micromatch, minimatch and multimatch, but complete Bash 4.3 wildcard support only (no support for exglobs, posix brackets or braces)") ### Contributors | **Commits** | **Contributor** | | --- | --- | | 512 | [jonschlinkert](https://github.com/jonschlinkert) | | 12 | [es128](https://github.com/es128) | | 9 | [danez](https://github.com/danez) | | 8 | [doowb](https://github.com/doowb) | | 6 | [paulmillr](https://github.com/paulmillr) | | 5 | [mrmlnc](https://github.com/mrmlnc) | | 3 | [DrPizza](https://github.com/DrPizza) | | 2 | [TrySound](https://github.com/TrySound) | | 2 | [mceIdo](https://github.com/mceIdo) | | 2 | [Glazy](https://github.com/Glazy) | | 2 | [MartinKolarik](https://github.com/MartinKolarik) | | 2 | [antonyk](https://github.com/antonyk) | | 2 | [Tvrqvoise](https://github.com/Tvrqvoise) | | 1 | [amilajack](https://github.com/amilajack) | | 1 | [Cslove](https://github.com/Cslove) | | 1 | [devongovett](https://github.com/devongovett) | | 1 | [DianeLooney](https://github.com/DianeLooney) | | 1 | [UltCombo](https://github.com/UltCombo) | | 1 | [frangio](https://github.com/frangio) | | 1 | [joyceerhl](https://github.com/joyceerhl) | | 1 | [juszczykjakub](https://github.com/juszczykjakub) | | 1 | [muescha](https://github.com/muescha) | | 1 | [sebdeckers](https://github.com/sebdeckers) | | 1 | [tomByrer](https://github.com/tomByrer) | | 1 | [fidian](https://github.com/fidian) | | 1 | [curbengh](https://github.com/curbengh) | | 1 | [simlu](https://github.com/simlu) | | 1 | [wtgtybhertgeghgtwtg](https://github.com/wtgtybhertgeghgtwtg) | | 1 | [yvele](https://github.com/yvele) | ### Author **Jon Schlinkert** * [GitHub Profile](https://github.com/jonschlinkert) * [Twitter Profile](https://twitter.com/jonschlinkert) * [LinkedIn Profile](https://linkedin.com/in/jonschlinkert) ### License Copyright © 2022, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT License](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.8.0, on March 24, 2022._ NOTE: The default branch has been renamed! master is now named main If you have a local clone, you can update it by running: ```shell git branch -m master main git fetch origin git branch -u origin/main main ``` # **node-addon-api module** This module contains **header-only C++ wrapper classes** which simplify the use of the C based [Node-API](https://nodejs.org/dist/latest/docs/api/n-api.html) provided by Node.js when using C++. It provides a C++ object model and exception handling semantics with low overhead. There are three options for implementing addons: Node-API, nan, or direct use of internal V8, libuv and Node.js libraries. Unless there is a need for direct access to functionality which is not exposed by Node-API as outlined in [C/C++ addons](https://nodejs.org/dist/latest/docs/api/addons.html) in Node.js core, use Node-API. Refer to [C/C++ addons with Node-API](https://nodejs.org/dist/latest/docs/api/n-api.html) for more information on Node-API. Node-API is an ABI stable C interface provided by Node.js for building native addons. It is independent from the underlying JavaScript runtime (e.g. V8 or ChakraCore) and is maintained as part of Node.js itself. It is intended to insulate native addons from changes in the underlying JavaScript engine and allow modules compiled for one version to run on later versions of Node.js without recompilation. The `node-addon-api` module, which is not part of Node.js, preserves the benefits of the Node-API as it consists only of inline code that depends only on the stable API provided by Node-API. As such, modules built against one version of Node.js using node-addon-api should run without having to be rebuilt with newer versions of Node.js. It is important to remember that *other* Node.js interfaces such as `libuv` (included in a project via `#include <uv.h>`) are not ABI-stable across Node.js major versions. Thus, an addon must use Node-API and/or `node-addon-api` exclusively and build against a version of Node.js that includes an implementation of Node-API (meaning an active LTS version of Node.js) in order to benefit from ABI stability across Node.js major versions. Node.js provides an [ABI stability guide][] containing a detailed explanation of ABI stability in general, and the Node-API ABI stability guarantee in particular. As new APIs are added to Node-API, node-addon-api must be updated to provide wrappers for those new APIs. For this reason node-addon-api provides methods that allow callers to obtain the underlying Node-API handles so direct calls to Node-API and the use of the objects/methods provided by node-addon-api can be used together. For example, in order to be able to use an API for which the node-addon-api does not yet provide a wrapper. APIs exposed by node-addon-api are generally used to create and manipulate JavaScript values. Concepts and operations generally map to ideas specified in the **ECMA262 Language Specification**. The [Node-API Resource](https://nodejs.github.io/node-addon-examples/) offers an excellent orientation and tips for developers just getting started with Node-API and node-addon-api. - **[Setup](#setup)** - **[API Documentation](#api)** - **[Examples](#examples)** - **[Tests](#tests)** - **[More resource and info about native Addons](#resources)** - **[Badges](#badges)** - **[Code of Conduct](CODE_OF_CONDUCT.md)** - **[Contributors](#contributors)** - **[License](#license)** ## **Current version: 3.2.1** (See [CHANGELOG.md](CHANGELOG.md) for complete Changelog) [](https://nodei.co/npm/node-addon-api/) [](https://nodei.co/npm/node-addon-api/) <a name="setup"></a> node-addon-api is based on [Node-API](https://nodejs.org/api/n-api.html) and supports using different Node-API versions. This allows addons built with it to run with Node.js versions which support the targeted Node-API version. **However** the node-addon-api support model is to support only the active LTS Node.js versions. This means that every year there will be a new major which drops support for the Node.js LTS version which has gone out of service. The oldest Node.js version supported by the current version of node-addon-api is Node.js 10.x. ## Setup - [Installation and usage](doc/setup.md) - [node-gyp](doc/node-gyp.md) - [cmake-js](doc/cmake-js.md) - [Conversion tool](doc/conversion-tool.md) - [Checker tool](doc/checker-tool.md) - [Generator](doc/generator.md) - [Prebuild tools](doc/prebuild_tools.md) <a name="api"></a> ### **API Documentation** The following is the documentation for node-addon-api. - [Full Class Hierarchy](doc/hierarchy.md) - [Addon Structure](doc/addon.md) - Data Types: - [Env](doc/env.md) - [CallbackInfo](doc/callbackinfo.md) - [Reference](doc/reference.md) - [Value](doc/value.md) - [Name](doc/name.md) - [Symbol](doc/symbol.md) - [String](doc/string.md) - [Number](doc/number.md) - [Date](doc/date.md) - [BigInt](doc/bigint.md) - [Boolean](doc/boolean.md) - [External](doc/external.md) - [Object](doc/object.md) - [Array](doc/array.md) - [ObjectReference](doc/object_reference.md) - [PropertyDescriptor](doc/property_descriptor.md) - [Function](doc/function.md) - [FunctionReference](doc/function_reference.md) - [ObjectWrap](doc/object_wrap.md) - [ClassPropertyDescriptor](doc/class_property_descriptor.md) - [Buffer](doc/buffer.md) - [ArrayBuffer](doc/array_buffer.md) - [TypedArray](doc/typed_array.md) - [TypedArrayOf](doc/typed_array_of.md) - [DataView](doc/dataview.md) - [Error Handling](doc/error_handling.md) - [Error](doc/error.md) - [TypeError](doc/type_error.md) - [RangeError](doc/range_error.md) - [Object Lifetime Management](doc/object_lifetime_management.md) - [HandleScope](doc/handle_scope.md) - [EscapableHandleScope](doc/escapable_handle_scope.md) - [Memory Management](doc/memory_management.md) - [Async Operations](doc/async_operations.md) - [AsyncWorker](doc/async_worker.md) - [AsyncContext](doc/async_context.md) - [AsyncWorker Variants](doc/async_worker_variants.md) - [Thread-safe Functions](doc/threadsafe.md) - [ThreadSafeFunction](doc/threadsafe_function.md) - [TypedThreadSafeFunction](doc/typed_threadsafe_function.md) - [Promises](doc/promises.md) - [Version management](doc/version_management.md) <a name="examples"></a> ### **Examples** Are you new to **node-addon-api**? Take a look at our **[examples](https://github.com/nodejs/node-addon-examples)** - **[Hello World](https://github.com/nodejs/node-addon-examples/tree/HEAD/1_hello_world/node-addon-api)** - **[Pass arguments to a function](https://github.com/nodejs/node-addon-examples/tree/HEAD/2_function_arguments/node-addon-api)** - **[Callbacks](https://github.com/nodejs/node-addon-examples/tree/HEAD/3_callbacks/node-addon-api)** - **[Object factory](https://github.com/nodejs/node-addon-examples/tree/HEAD/4_object_factory/node-addon-api)** - **[Function factory](https://github.com/nodejs/node-addon-examples/tree/HEAD/5_function_factory/node-addon-api)** - **[Wrapping C++ Object](https://github.com/nodejs/node-addon-examples/tree/HEAD/6_object_wrap/node-addon-api)** - **[Factory of wrapped object](https://github.com/nodejs/node-addon-examples/tree/HEAD/7_factory_wrap/node-addon-api)** - **[Passing wrapped object around](https://github.com/nodejs/node-addon-examples/tree/HEAD/8_passing_wrapped/node-addon-api)** <a name="tests"></a> ### **Tests** To run the **node-addon-api** tests do: ``` npm install npm test ``` To avoid testing the deprecated portions of the API run ``` npm install npm test --disable-deprecated ``` To run the tests targeting a specific version of Node-API run ``` npm install export NAPI_VERSION=X npm test --NAPI_VERSION=X ``` where X is the version of Node-API you want to target. ### **Debug** To run the **node-addon-api** tests with `--debug` option: ``` npm run-script dev ``` If you want faster build, you might use the following option: ``` npm run-script dev:incremental ``` Take a look and get inspired by our **[test suite](https://github.com/nodejs/node-addon-api/tree/HEAD/test)** ### **Benchmarks** You can run the available benchmarks using the following command: ``` npm run-script benchmark ``` See [benchmark/README.md](benchmark/README.md) for more details about running and adding benchmarks. <a name="resources"></a> ### **More resource and info about native Addons** - **[C++ Addons](https://nodejs.org/dist/latest/docs/api/addons.html)** - **[Node-API](https://nodejs.org/dist/latest/docs/api/n-api.html)** - **[Node-API - Next Generation Node API for Native Modules](https://youtu.be/-Oniup60Afs)** - **[How We Migrated Realm JavaScript From NAN to Node-API](https://developer.mongodb.com/article/realm-javascript-nan-to-n-api)** As node-addon-api's core mission is to expose the plain C Node-API as C++ wrappers, tools that facilitate n-api/node-addon-api providing more convenient patterns on developing a Node.js add-ons with n-api/node-addon-api can be published to NPM as standalone packages. It is also recommended to tag such packages with `node-addon-api` to provide more visibility to the community. Quick links to NPM searches: [keywords:node-addon-api](https://www.npmjs.com/search?q=keywords%3Anode-addon-api). <a name="other-bindings"></a> ### **Other bindings** - **[napi-rs](https://napi.rs)** - (`Rust`) <a name="badges"></a> ### **Badges** The use of badges is recommended to indicate the minimum version of Node-API required for the module. This helps to determine which Node.js major versions are supported. Addon maintainers can consult the [Node-API support matrix][] to determine which Node.js versions provide a given Node-API version. The following badges are available:          ## **Contributing** We love contributions from the community to **node-addon-api**! See [CONTRIBUTING.md](CONTRIBUTING.md) for more details on our philosophy around extending this module. <a name="contributors"></a> ## Team members ### Active | Name | GitHub Link | | ------------------- | ----------------------------------------------------- | | Anna Henningsen | [addaleax](https://github.com/addaleax) | | Chengzhong Wu | [legendecas](https://github.com/legendecas) | | Gabriel Schulhof | [gabrielschulhof](https://github.com/gabrielschulhof) | | Jim Schlight | [jschlight](https://github.com/jschlight) | | Michael Dawson | [mhdawson](https://github.com/mhdawson) | | Kevin Eady | [KevinEady](https://github.com/KevinEady) | Nicola Del Gobbo | [NickNaso](https://github.com/NickNaso) | ### Emeritus | Name | GitHub Link | | ------------------- | ----------------------------------------------------- | | Arunesh Chandra | [aruneshchandra](https://github.com/aruneshchandra) | | Benjamin Byholm | [kkoopa](https://github.com/kkoopa) | | Jason Ginchereau | [jasongin](https://github.com/jasongin) | | Hitesh Kanwathirtha | [digitalinfinity](https://github.com/digitalinfinity) | | Sampson Gao | [sampsongao](https://github.com/sampsongao) | | Taylor Woll | [boingoing](https://github.com/boingoing) | <a name="license"></a> Licensed under [MIT](./LICENSE.md) [ABI stability guide]: https://nodejs.org/en/docs/guides/abi-stability/ [Node-API support matrix]: https://nodejs.org/dist/latest/docs/api/n-api.html#n_api_n_api_version_matrix gauge ===== A nearly stateless terminal based horizontal gauge / progress bar. ```javascript var Gauge = require("gauge") var gauge = new Gauge() gauge.show("test", 0.20) gauge.pulse("this") gauge.hide() ```  ### CHANGES FROM 1.x Gauge 2.x is breaking release, please see the [changelog] for details on what's changed if you were previously a user of this module. [changelog]: CHANGELOG.md ### THE GAUGE CLASS This is the typical interface to the module– it provides a pretty fire-and-forget interface to displaying your status information. ``` var Gauge = require("gauge") var gauge = new Gauge([stream], [options]) ``` * **stream** – *(optional, default STDERR)* A stream that progress bar updates are to be written to. Gauge honors backpressure and will pause most writing if it is indicated. * **options** – *(optional)* An option object. Constructs a new gauge. Gauges are drawn on a single line, and are not drawn if **stream** isn't a tty and a tty isn't explicitly provided. If **stream** is a terminal or if you pass in **tty** to **options** then we will detect terminal resizes and redraw to fit. We do this by watching for `resize` events on the tty. (To work around a bug in verisons of Node prior to 2.5.0, we watch for them on stdout if the tty is stderr.) Resizes to larger window sizes will be clean, but shrinking the window will always result in some cruft. **IMPORTANT:** If you prevously were passing in a non-tty stream but you still want output (for example, a stream wrapped by the `ansi` module) then you need to pass in the **tty** option below, as `gauge` needs access to the underlying tty in order to do things like terminal resizes and terminal width detection. The **options** object can have the following properties, all of which are optional: * **updateInterval**: How often gauge updates should be drawn, in miliseconds. * **fixedFramerate**: Defaults to false on node 0.8, true on everything else. When this is true a timer is created to trigger once every `updateInterval` ms, when false, updates are printed as soon as they come in but updates more often than `updateInterval` are ignored. The reason 0.8 doesn't have this set to true is that it can't `unref` its timer and so it would stop your program from exiting– if you want to use this feature with 0.8 just make sure you call `gauge.disable()` before you expect your program to exit. * **themes**: A themeset to use when selecting the theme to use. Defaults to `gauge/themes`, see the [themes] documentation for details. * **theme**: Select a theme for use, it can be a: * Theme object, in which case the **themes** is not used. * The name of a theme, which will be looked up in the current *themes* object. * A configuration object with any of `hasUnicode`, `hasColor` or `platform` keys, which if wlll be used to override our guesses when making a default theme selection. If no theme is selected then a default is picked using a combination of our best guesses at your OS, color support and unicode support. * **template**: Describes what you want your gauge to look like. The default is what npm uses. Detailed [documentation] is later in this document. * **hideCursor**: Defaults to true. If true, then the cursor will be hidden while the gauge is displayed. * **tty**: The tty that you're ultimately writing to. Defaults to the same as **stream**. This is used for detecting the width of the terminal and resizes. The width used is `tty.columns - 1`. If no tty is available then a width of `79` is assumed. * **enabled**: Defaults to true if `tty` is a TTY, false otherwise. If true the gauge starts enabled. If disabled then all update commands are ignored and no gauge will be printed until you call `.enable()`. * **Plumbing**: The class to use to actually generate the gauge for printing. This defaults to `require('gauge/plumbing')` and ordinarly you shouldn't need to override this. * **cleanupOnExit**: Defaults to true. Ordinarily we register an exit handler to make sure your cursor is turned back on and the progress bar erased when your process exits, even if you Ctrl-C out or otherwise exit unexpectedly. You can disable this and it won't register the exit handler. [has-unicode]: https://www.npmjs.com/package/has-unicode [themes]: #themes [documentation]: #templates #### `gauge.show(section | status, [completed])` The first argument is either the section, the name of the current thing contributing to progress, or an object with keys like **section**, **subsection** & **completed** (or any others you have types for in a custom template). If you don't want to update or set any of these you can pass `null` and it will be ignored. The second argument is the percent completed as a value between 0 and 1. Without it, completion is just not updated. You'll also note that completion can be passed in as part of a status object as the first argument. If both it and the completed argument are passed in, the completed argument wins. #### `gauge.hide([cb])` Removes the gauge from the terminal. Optionally, callback `cb` after IO has had an opportunity to happen (currently this just means after `setImmediate` has called back.) It turns out this is important when you're pausing the progress bar on one filehandle and printing to another– otherwise (with a big enough print) node can end up printing the "end progress bar" bits to the progress bar filehandle while other stuff is printing to another filehandle. These getting interleaved can cause corruption in some terminals. #### `gauge.pulse([subsection])` * **subsection** – *(optional)* The specific thing that triggered this pulse Spins the spinner in the gauge to show output. If **subsection** is included then it will be combined with the last name passed to `gauge.show`. #### `gauge.disable()` Hides the gauge and ignores further calls to `show` or `pulse`. #### `gauge.enable()` Shows the gauge and resumes updating when `show` or `pulse` is called. #### `gauge.isEnabled()` Returns true if the gauge is enabled. #### `gauge.setThemeset(themes)` Change the themeset to select a theme from. The same as the `themes` option used in the constructor. The theme will be reselected from this themeset. #### `gauge.setTheme(theme)` Change the active theme, will be displayed with the next show or pulse. This can be: * Theme object, in which case the **themes** is not used. * The name of a theme, which will be looked up in the current *themes* object. * A configuration object with any of `hasUnicode`, `hasColor` or `platform` keys, which if wlll be used to override our guesses when making a default theme selection. If no theme is selected then a default is picked using a combination of our best guesses at your OS, color support and unicode support. #### `gauge.setTemplate(template)` Change the active template, will be displayed with the next show or pulse ### Tracking Completion If you have more than one thing going on that you want to track completion of, you may find the related [are-we-there-yet] helpful. It's `change` event can be wired up to the `show` method to get a more traditional progress bar interface. [are-we-there-yet]: https://www.npmjs.com/package/are-we-there-yet ### THEMES ``` var themes = require('gauge/themes') // fetch the default color unicode theme for this platform var ourTheme = themes({hasUnicode: true, hasColor: true}) // fetch the default non-color unicode theme for osx var ourTheme = themes({hasUnicode: true, hasColor: false, platform: 'darwin'}) // create a new theme based on the color ascii theme for this platform // that brackets the progress bar with arrows var ourTheme = themes.newTheme(theme(hasUnicode: false, hasColor: true}), { preProgressbar: '→', postProgressbar: '←' }) ``` The object returned by `gauge/themes` is an instance of the `ThemeSet` class. ``` var ThemeSet = require('gauge/theme-set') var themes = new ThemeSet() // or var themes = require('gauge/themes') var mythemes = themes.newThemeset() // creates a new themeset based on the default themes ``` #### themes(opts) #### themes.getDefault(opts) Theme objects are a function that fetches the default theme based on platform, unicode and color support. Options is an object with the following properties: * **hasUnicode** - If true, fetch a unicode theme, if no unicode theme is available then a non-unicode theme will be used. * **hasColor** - If true, fetch a color theme, if no color theme is available a non-color theme will be used. * **platform** (optional) - Defaults to `process.platform`. If no platform match is available then `fallback` is used instead. If no compatible theme can be found then an error will be thrown with a `code` of `EMISSINGTHEME`. #### themes.addTheme(themeName, themeObj) #### themes.addTheme(themeName, [parentTheme], newTheme) Adds a named theme to the themeset. You can pass in either a theme object, as returned by `themes.newTheme` or the arguments you'd pass to `themes.newTheme`. #### themes.getThemeNames() Return a list of all of the names of the themes in this themeset. Suitable for use in `themes.getTheme(…)`. #### themes.getTheme(name) Returns the theme object from this theme set named `name`. If `name` does not exist in this themeset an error will be thrown with a `code` of `EMISSINGTHEME`. #### themes.setDefault([opts], themeName) `opts` is an object with the following properties. * **platform** - Defaults to `'fallback'`. If your theme is platform specific, specify that here with the platform from `process.platform`, eg, `win32`, `darwin`, etc. * **hasUnicode** - Defaults to `false`. If your theme uses unicode you should set this to true. * **hasColor** - Defaults to `false`. If your theme uses color you should set this to true. `themeName` is the name of the theme (as given to `addTheme`) to use for this set of `opts`. #### themes.newTheme([parentTheme,] newTheme) Create a new theme object based on `parentTheme`. If no `parentTheme` is provided then a minimal parentTheme that defines functions for rendering the activity indicator (spinner) and progress bar will be defined. (This fallback parent is defined in `gauge/base-theme`.) newTheme should be a bare object– we'll start by discussing the properties defined by the default themes: * **preProgressbar** - displayed prior to the progress bar, if the progress bar is displayed. * **postProgressbar** - displayed after the progress bar, if the progress bar is displayed. * **progressBarTheme** - The subtheme passed through to the progress bar renderer, it's an object with `complete` and `remaining` properties that are the strings you want repeated for those sections of the progress bar. * **activityIndicatorTheme** - The theme for the activity indicator (spinner), this can either be a string, in which each character is a different step, or an array of strings. * **preSubsection** - Displayed as a separator between the `section` and `subsection` when the latter is printed. More generally, themes can have any value that would be a valid value when rendering templates. The properties in the theme are used when their name matches a type in the template. Their values can be: * **strings & numbers** - They'll be included as is * **function (values, theme, width)** - Should return what you want in your output. *values* is an object with values provided via `gauge.show`, *theme* is the theme specific to this item (see below) or this theme object, and *width* is the number of characters wide your result should be. There are a couple of special prefixes: * **pre** - Is shown prior to the property, if its displayed. * **post** - Is shown after the property, if its displayed. And one special suffix: * **Theme** - Its value is passed to a function-type item as the theme. #### themes.addToAllThemes(theme) This *mixes-in* `theme` into all themes currently defined. It also adds it to the default parent theme for this themeset, so future themes added to this themeset will get the values from `theme` by default. #### themes.newThemeset() Copy the current themeset into a new one. This allows you to easily inherit one themeset from another. ### TEMPLATES A template is an array of objects and strings that, after being evaluated, will be turned into the gauge line. The default template is: ```javascript [ {type: 'progressbar', length: 20}, {type: 'activityIndicator', kerning: 1, length: 1}, {type: 'section', kerning: 1, default: ''}, {type: 'subsection', kerning: 1, default: ''} ] ``` The various template elements can either be **plain strings**, in which case they will be be included verbatum in the output, or objects with the following properties: * *type* can be any of the following plus any keys you pass into `gauge.show` plus any keys you have on a custom theme. * `section` – What big thing you're working on now. * `subsection` – What component of that thing is currently working. * `activityIndicator` – Shows a spinner using the `activityIndicatorTheme` from your active theme. * `progressbar` – A progress bar representing your current `completed` using the `progressbarTheme` from your active theme. * *kerning* – Number of spaces that must be between this item and other items, if this item is displayed at all. * *maxLength* – The maximum length for this element. If its value is longer it will be truncated. * *minLength* – The minimum length for this element. If its value is shorter it will be padded according to the *align* value. * *align* – (Default: left) Possible values "left", "right" and "center". Works as you'd expect from word processors. * *length* – Provides a single value for both *minLength* and *maxLength*. If both *length* and *minLength or *maxLength* are specifed then the latter take precedence. * *value* – A literal value to use for this template item. * *default* – A default value to use for this template item if a value wasn't otherwise passed in. ### PLUMBING This is the super simple, assume nothing, do no magic internals used by gauge to implement its ordinary interface. ``` var Plumbing = require('gauge/plumbing') var gauge = new Plumbing(theme, template, width) ``` * **theme**: The theme to use. * **template**: The template to use. * **width**: How wide your gauge should be #### `gauge.setTheme(theme)` Change the active theme. #### `gauge.setTemplate(template)` Change the active template. #### `gauge.setWidth(width)` Change the width to render at. #### `gauge.hide()` Return the string necessary to hide the progress bar #### `gauge.hideCursor()` Return a string to hide the cursor. #### `gauge.showCursor()` Return a string to show the cursor. #### `gauge.show(status)` Using `status` for values, render the provided template with the theme and return a string that is suitable for printing to update the gauge. JS-YAML - YAML 1.2 parser / writer for JavaScript ================================================= [](https://travis-ci.org/nodeca/js-yaml) [](https://www.npmjs.org/package/js-yaml) __[Online Demo](http://nodeca.github.com/js-yaml/)__ This is an implementation of [YAML](http://yaml.org/), a human-friendly data serialization language. Started as [PyYAML](http://pyyaml.org/) port, it was completely rewritten from scratch. Now it's very fast, and supports 1.2 spec. Installation ------------ ### YAML module for node.js ``` npm install js-yaml ``` ### CLI executable If you want to inspect your YAML files from CLI, install js-yaml globally: ``` npm install -g js-yaml ``` #### Usage ``` usage: js-yaml [-h] [-v] [-c] [-t] file Positional arguments: file File with YAML document(s) Optional arguments: -h, --help Show this help message and exit. -v, --version Show program's version number and exit. -c, --compact Display errors in compact mode -t, --trace Show stack trace on error ``` ### Bundled YAML library for browsers ``` html <!-- esprima required only for !!js/function --> <script src="esprima.js"></script> <script src="js-yaml.min.js"></script> <script type="text/javascript"> var doc = jsyaml.load('greeting: hello\nname: world'); </script> ``` Browser support was done mostly for the online demo. If you find any errors - feel free to send pull requests with fixes. Also note, that IE and other old browsers needs [es5-shims](https://github.com/kriskowal/es5-shim) to operate. Notes: 1. We have no resources to support browserified version. Don't expect it to be well tested. Don't expect fast fixes if something goes wrong there. 2. `!!js/function` in browser bundle will not work by default. If you really need it - load `esprima` parser first (via amd or directly). 3. `!!bin` in browser will return `Array`, because browsers do not support node.js `Buffer` and adding Buffer shims is completely useless on practice. API --- Here we cover the most 'useful' methods. If you need advanced details (creating your own tags), see [wiki](https://github.com/nodeca/js-yaml/wiki) and [examples](https://github.com/nodeca/js-yaml/tree/master/examples) for more info. ``` javascript const yaml = require('js-yaml'); const fs = require('fs'); // Get document, or throw exception on error try { const doc = yaml.safeLoad(fs.readFileSync('/home/ixti/example.yml', 'utf8')); console.log(doc); } catch (e) { console.log(e); } ``` ### safeLoad (string [ , options ]) **Recommended loading way.** Parses `string` as single YAML document. Returns either a plain object, a string or `undefined`, or throws `YAMLException` on error. By default, does not support regexps, functions and undefined. This method is safe for untrusted data. options: - `filename` _(default: null)_ - string to be used as a file path in error/warning messages. - `onWarning` _(default: null)_ - function to call on warning messages. Loader will call this function with an instance of `YAMLException` for each warning. - `schema` _(default: `DEFAULT_SAFE_SCHEMA`)_ - specifies a schema to use. - `FAILSAFE_SCHEMA` - only strings, arrays and plain objects: http://www.yaml.org/spec/1.2/spec.html#id2802346 - `JSON_SCHEMA` - all JSON-supported types: http://www.yaml.org/spec/1.2/spec.html#id2803231 - `CORE_SCHEMA` - same as `JSON_SCHEMA`: http://www.yaml.org/spec/1.2/spec.html#id2804923 - `DEFAULT_SAFE_SCHEMA` - all supported YAML types, without unsafe ones (`!!js/undefined`, `!!js/regexp` and `!!js/function`): http://yaml.org/type/ - `DEFAULT_FULL_SCHEMA` - all supported YAML types. - `json` _(default: false)_ - compatibility with JSON.parse behaviour. If true, then duplicate keys in a mapping will override values rather than throwing an error. NOTE: This function **does not** understand multi-document sources, it throws exception on those. NOTE: JS-YAML **does not** support schema-specific tag resolution restrictions. So, the JSON schema is not as strictly defined in the YAML specification. It allows numbers in any notation, use `Null` and `NULL` as `null`, etc. The core schema also has no such restrictions. It allows binary notation for integers. ### load (string [ , options ]) **Use with care with untrusted sources**. The same as `safeLoad()` but uses `DEFAULT_FULL_SCHEMA` by default - adds some JavaScript-specific types: `!!js/function`, `!!js/regexp` and `!!js/undefined`. For untrusted sources, you must additionally validate object structure to avoid injections: ``` javascript const untrusted_code = '"toString": !<tag:yaml.org,2002:js/function> "function (){very_evil_thing();}"'; // I'm just converting that string, what could possibly go wrong? require('js-yaml').load(untrusted_code) + '' ``` ### safeLoadAll (string [, iterator] [, options ]) Same as `safeLoad()`, but understands multi-document sources. Applies `iterator` to each document if specified, or returns array of documents. ``` javascript const yaml = require('js-yaml'); yaml.safeLoadAll(data, function (doc) { console.log(doc); }); ``` ### loadAll (string [, iterator] [ , options ]) Same as `safeLoadAll()` but uses `DEFAULT_FULL_SCHEMA` by default. ### safeDump (object [ , options ]) Serializes `object` as a YAML document. Uses `DEFAULT_SAFE_SCHEMA`, so it will throw an exception if you try to dump regexps or functions. However, you can disable exceptions by setting the `skipInvalid` option to `true`. options: - `indent` _(default: 2)_ - indentation width to use (in spaces). - `noArrayIndent` _(default: false)_ - when true, will not add an indentation level to array elements - `skipInvalid` _(default: false)_ - do not throw on invalid types (like function in the safe schema) and skip pairs and single values with such types. - `flowLevel` (default: -1) - specifies level of nesting, when to switch from block to flow style for collections. -1 means block style everwhere - `styles` - "tag" => "style" map. Each tag may have own set of styles. - `schema` _(default: `DEFAULT_SAFE_SCHEMA`)_ specifies a schema to use. - `sortKeys` _(default: `false`)_ - if `true`, sort keys when dumping YAML. If a function, use the function to sort the keys. - `lineWidth` _(default: `80`)_ - set max line width. - `noRefs` _(default: `false`)_ - if `true`, don't convert duplicate objects into references - `noCompatMode` _(default: `false`)_ - if `true` don't try to be compatible with older yaml versions. Currently: don't quote "yes", "no" and so on, as required for YAML 1.1 - `condenseFlow` _(default: `false`)_ - if `true` flow sequences will be condensed, omitting the space between `a, b`. Eg. `'[a,b]'`, and omitting the space between `key: value` and quoting the key. Eg. `'{"a":b}'` Can be useful when using yaml for pretty URL query params as spaces are %-encoded. The following table show availlable styles (e.g. "canonical", "binary"...) available for each tag (.e.g. !!null, !!int ...). Yaml output is shown on the right side after `=>` (default setting) or `->`: ``` none !!null "canonical" -> "~" "lowercase" => "null" "uppercase" -> "NULL" "camelcase" -> "Null" !!int "binary" -> "0b1", "0b101010", "0b1110001111010" "octal" -> "01", "052", "016172" "decimal" => "1", "42", "7290" "hexadecimal" -> "0x1", "0x2A", "0x1C7A" !!bool "lowercase" => "true", "false" "uppercase" -> "TRUE", "FALSE" "camelcase" -> "True", "False" !!float "lowercase" => ".nan", '.inf' "uppercase" -> ".NAN", '.INF' "camelcase" -> ".NaN", '.Inf' ``` Example: ``` javascript safeDump (object, { 'styles': { '!!null': 'canonical' // dump null as ~ }, 'sortKeys': true // sort object keys }); ``` ### dump (object [ , options ]) Same as `safeDump()` but without limits (uses `DEFAULT_FULL_SCHEMA` by default). Supported YAML types -------------------- The list of standard YAML tags and corresponding JavaScipt types. See also [YAML tag discussion](http://pyyaml.org/wiki/YAMLTagDiscussion) and [YAML types repository](http://yaml.org/type/). ``` !!null '' # null !!bool 'yes' # bool !!int '3...' # number !!float '3.14...' # number !!binary '...base64...' # buffer !!timestamp 'YYYY-...' # date !!omap [ ... ] # array of key-value pairs !!pairs [ ... ] # array or array pairs !!set { ... } # array of objects with given keys and null values !!str '...' # string !!seq [ ... ] # array !!map { ... } # object ``` **JavaScript-specific tags** ``` !!js/regexp /pattern/gim # RegExp !!js/undefined '' # Undefined !!js/function 'function () {...}' # Function ``` Caveats ------- Note, that you use arrays or objects as key in JS-YAML. JS does not allow objects or arrays as keys, and stringifies (by calling `toString()` method) them at the moment of adding them. ``` yaml --- ? [ foo, bar ] : - baz ? { foo: bar } : - baz - baz ``` ``` javascript { "foo,bar": ["baz"], "[object Object]": ["baz", "baz"] } ``` Also, reading of properties on implicit block mapping keys is not supported yet. So, the following YAML document cannot be loaded. ``` yaml &anchor foo: foo: bar *anchor: duplicate key baz: bat *anchor: duplicate key ``` js-yaml for enterprise ---------------------- Available as part of the Tidelift Subscription The maintainers of js-yaml and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. [Learn more.](https://tidelift.com/subscription/pkg/npm-js-yaml?utm_source=npm-js-yaml&utm_medium=referral&utm_campaign=enterprise&utm_term=repo) # yargs-parser [](https://travis-ci.org/yargs/yargs-parser) [](https://www.npmjs.com/package/yargs-parser) [](https://github.com/conventional-changelog/standard-version) The mighty option parser used by [yargs](https://github.com/yargs/yargs). visit the [yargs website](http://yargs.js.org/) for more examples, and thorough usage instructions. <img width="250" src="https://raw.githubusercontent.com/yargs/yargs-parser/master/yargs-logo.png"> ## Example ```sh npm i yargs-parser --save ``` ```js var argv = require('yargs-parser')(process.argv.slice(2)) console.log(argv) ``` ```sh node example.js --foo=33 --bar hello { _: [], foo: 33, bar: 'hello' } ``` _or parse a string!_ ```js var argv = require('yargs-parser')('--foo=99 --bar=33') console.log(argv) ``` ```sh { _: [], foo: 99, bar: 33 } ``` Convert an array of mixed types before passing to `yargs-parser`: ```js var parse = require('yargs-parser') parse(['-f', 11, '--zoom', 55].join(' ')) // <-- array to string parse(['-f', 11, '--zoom', 55].map(String)) // <-- array of strings ``` ## API ### require('yargs-parser')(args, opts={}) Parses command line arguments returning a simple mapping of keys and values. **expects:** * `args`: a string or array of strings representing the options to parse. * `opts`: provide a set of hints indicating how `args` should be parsed: * `opts.alias`: an object representing the set of aliases for a key: `{alias: {foo: ['f']}}`. * `opts.array`: indicate that keys should be parsed as an array: `{array: ['foo', 'bar']}`.<br> Indicate that keys should be parsed as an array and coerced to booleans / numbers:<br> `{array: [{ key: 'foo', boolean: true }, {key: 'bar', number: true}]}`. * `opts.boolean`: arguments should be parsed as booleans: `{boolean: ['x', 'y']}`. * `opts.coerce`: provide a custom synchronous function that returns a coerced value from the argument provided (or throws an error). For arrays the function is called only once for the entire array:<br> `{coerce: {foo: function (arg) {return modifiedArg}}}`. * `opts.config`: indicate a key that represents a path to a configuration file (this file will be loaded and parsed). * `opts.configObjects`: configuration objects to parse, their properties will be set as arguments:<br> `{configObjects: [{'x': 5, 'y': 33}, {'z': 44}]}`. * `opts.configuration`: provide configuration options to the yargs-parser (see: [configuration](#configuration)). * `opts.count`: indicate a key that should be used as a counter, e.g., `-vvv` = `{v: 3}`. * `opts.default`: provide default values for keys: `{default: {x: 33, y: 'hello world!'}}`. * `opts.envPrefix`: environment variables (`process.env`) with the prefix provided should be parsed. * `opts.narg`: specify that a key requires `n` arguments: `{narg: {x: 2}}`. * `opts.normalize`: `path.normalize()` will be applied to values set to this key. * `opts.number`: keys should be treated as numbers. * `opts.string`: keys should be treated as strings (even if they resemble a number `-x 33`). **returns:** * `obj`: an object representing the parsed value of `args` * `key/value`: key value pairs for each argument and their aliases. * `_`: an array representing the positional arguments. * [optional] `--`: an array with arguments after the end-of-options flag `--`. ### require('yargs-parser').detailed(args, opts={}) Parses a command line string, returning detailed information required by the yargs engine. **expects:** * `args`: a string or array of strings representing options to parse. * `opts`: provide a set of hints indicating how `args`, inputs are identical to `require('yargs-parser')(args, opts={})`. **returns:** * `argv`: an object representing the parsed value of `args` * `key/value`: key value pairs for each argument and their aliases. * `_`: an array representing the positional arguments. * [optional] `--`: an array with arguments after the end-of-options flag `--`. * `error`: populated with an error object if an exception occurred during parsing. * `aliases`: the inferred list of aliases built by combining lists in `opts.alias`. * `newAliases`: any new aliases added via camel-case expansion: * `boolean`: `{ fooBar: true }` * `defaulted`: any new argument created by `opts.default`, no aliases included. * `boolean`: `{ foo: true }` * `configuration`: given by default settings and `opts.configuration`. <a name="configuration"></a> ### Configuration The yargs-parser applies several automated transformations on the keys provided in `args`. These features can be turned on and off using the `configuration` field of `opts`. ```js var parsed = parser(['--no-dice'], { configuration: { 'boolean-negation': false } }) ``` ### short option groups * default: `true`. * key: `short-option-groups`. Should a group of short-options be treated as boolean flags? ```sh node example.js -abc { _: [], a: true, b: true, c: true } ``` _if disabled:_ ```sh node example.js -abc { _: [], abc: true } ``` ### camel-case expansion * default: `true`. * key: `camel-case-expansion`. Should hyphenated arguments be expanded into camel-case aliases? ```sh node example.js --foo-bar { _: [], 'foo-bar': true, fooBar: true } ``` _if disabled:_ ```sh node example.js --foo-bar { _: [], 'foo-bar': true } ``` ### dot-notation * default: `true` * key: `dot-notation` Should keys that contain `.` be treated as objects? ```sh node example.js --foo.bar { _: [], foo: { bar: true } } ``` _if disabled:_ ```sh node example.js --foo.bar { _: [], "foo.bar": true } ``` ### parse numbers * default: `true` * key: `parse-numbers` Should keys that look like numbers be treated as such? ```sh node example.js --foo=99.3 { _: [], foo: 99.3 } ``` _if disabled:_ ```sh node example.js --foo=99.3 { _: [], foo: "99.3" } ``` ### boolean negation * default: `true` * key: `boolean-negation` Should variables prefixed with `--no` be treated as negations? ```sh node example.js --no-foo { _: [], foo: false } ``` _if disabled:_ ```sh node example.js --no-foo { _: [], "no-foo": true } ``` ### combine arrays * default: `false` * key: `combine-arrays` Should arrays be combined when provided by both command line arguments and a configuration file. ### duplicate arguments array * default: `true` * key: `duplicate-arguments-array` Should arguments be coerced into an array when duplicated: ```sh node example.js -x 1 -x 2 { _: [], x: [1, 2] } ``` _if disabled:_ ```sh node example.js -x 1 -x 2 { _: [], x: 2 } ``` ### flatten duplicate arrays * default: `true` * key: `flatten-duplicate-arrays` Should array arguments be coerced into a single array when duplicated: ```sh node example.js -x 1 2 -x 3 4 { _: [], x: [1, 2, 3, 4] } ``` _if disabled:_ ```sh node example.js -x 1 2 -x 3 4 { _: [], x: [[1, 2], [3, 4]] } ``` ### greedy arrays * default: `true` * key: `greedy-arrays` Should arrays consume more than one positional argument following their flag. ```sh node example --arr 1 2 { _[], arr: [1, 2] } ``` _if disabled:_ ```sh node example --arr 1 2 { _[2], arr: [1] } ``` **Note: in `v18.0.0` we are considering defaulting greedy arrays to `false`.** ### nargs eats options * default: `false` * key: `nargs-eats-options` Should nargs consume dash options as well as positional arguments. ### negation prefix * default: `no-` * key: `negation-prefix` The prefix to use for negated boolean variables. ```sh node example.js --no-foo { _: [], foo: false } ``` _if set to `quux`:_ ```sh node example.js --quuxfoo { _: [], foo: false } ``` ### populate -- * default: `false`. * key: `populate--` Should unparsed flags be stored in `--` or `_`. _If disabled:_ ```sh node example.js a -b -- x y { _: [ 'a', 'x', 'y' ], b: true } ``` _If enabled:_ ```sh node example.js a -b -- x y { _: [ 'a' ], '--': [ 'x', 'y' ], b: true } ``` ### set placeholder key * default: `false`. * key: `set-placeholder-key`. Should a placeholder be added for keys not set via the corresponding CLI argument? _If disabled:_ ```sh node example.js -a 1 -c 2 { _: [], a: 1, c: 2 } ``` _If enabled:_ ```sh node example.js -a 1 -c 2 { _: [], a: 1, b: undefined, c: 2 } ``` ### halt at non-option * default: `false`. * key: `halt-at-non-option`. Should parsing stop at the first positional argument? This is similar to how e.g. `ssh` parses its command line. _If disabled:_ ```sh node example.js -a run b -x y { _: [ 'b' ], a: 'run', x: 'y' } ``` _If enabled:_ ```sh node example.js -a run b -x y { _: [ 'b', '-x', 'y' ], a: 'run' } ``` ### strip aliased * default: `false` * key: `strip-aliased` Should aliases be removed before returning results? _If disabled:_ ```sh node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1, 'test-alias': 1, testAlias: 1 } ``` _If enabled:_ ```sh node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1 } ``` ### strip dashed * default: `false` * key: `strip-dashed` Should dashed keys be removed before returning results? This option has no effect if `camel-case-expansion` is disabled. _If disabled:_ ```sh node example.js --test-field 1 { _: [], 'test-field': 1, testField: 1 } ``` _If enabled:_ ```sh node example.js --test-field 1 { _: [], testField: 1 } ``` ### unknown options as args * default: `false` * key: `unknown-options-as-args` Should unknown options be treated like regular arguments? An unknown option is one that is not configured in `opts`. _If disabled_ ```sh node example.js --unknown-option --known-option 2 --string-option --unknown-option2 { _: [], unknownOption: true, knownOption: 2, stringOption: '', unknownOption2: true } ``` _If enabled_ ```sh node example.js --unknown-option --known-option 2 --string-option --unknown-option2 { _: ['--unknown-option'], knownOption: 2, stringOption: '--unknown-option2' } ``` ## Special Thanks The yargs project evolves from optimist and minimist. It owes its existence to a lot of James Halliday's hard work. Thanks [substack](https://github.com/substack) **beep** **boop** \o/ ## License ISC <img align="right" alt="Ajv logo" width="160" src="https://ajv.js.org/images/ajv_logo.png"> # Ajv: Another JSON Schema Validator The fastest JSON Schema validator for Node.js and browser. Supports draft-04/06/07. [](https://travis-ci.org/ajv-validator/ajv) [](https://www.npmjs.com/package/ajv) [](https://www.npmjs.com/package/ajv/v/7.0.0-beta.0) [](https://www.npmjs.com/package/ajv) [](https://coveralls.io/github/ajv-validator/ajv?branch=master) [](https://gitter.im/ajv-validator/ajv) [](https://github.com/sponsors/epoberezkin) ## Ajv v7 beta is released [Ajv version 7.0.0-beta.0](https://github.com/ajv-validator/ajv/tree/v7-beta) is released with these changes: - to reduce the mistakes in JSON schemas and unexpected validation results, [strict mode](./docs/strict-mode.md) is added - it prohibits ignored or ambiguous JSON Schema elements. - to make code injection from untrusted schemas impossible, [code generation](./docs/codegen.md) is fully re-written to be safe. - to simplify Ajv extensions, the new keyword API that is used by pre-defined keywords is available to user-defined keywords - it is much easier to define any keywords now, especially with subschemas. - schemas are compiled to ES6 code (ES5 code generation is supported with an option). - to improve reliability and maintainability the code is migrated to TypeScript. **Please note**: - the support for JSON-Schema draft-04 is removed - if you have schemas using "id" attributes you have to replace them with "\$id" (or continue using version 6 that will be supported until 02/28/2021). - all formats are separated to ajv-formats package - they have to be explicitely added if you use them. See [release notes](https://github.com/ajv-validator/ajv/releases/tag/v7.0.0-beta.0) for the details. To install the new version: ```bash npm install ajv@beta ``` See [Getting started with v7](https://github.com/ajv-validator/ajv/tree/v7-beta#usage) for code example. ## Mozilla MOSS grant and OpenJS Foundation [<img src="https://www.poberezkin.com/images/mozilla.png" width="240" height="68">](https://www.mozilla.org/en-US/moss/) &nbsp;&nbsp;&nbsp; [<img src="https://www.poberezkin.com/images/openjs.png" width="220" height="68">](https://openjsf.org/blog/2020/08/14/ajv-joins-openjs-foundation-as-an-incubation-project/) Ajv has been awarded a grant from Mozilla’s [Open Source Support (MOSS) program](https://www.mozilla.org/en-US/moss/) in the “Foundational Technology” track! It will sponsor the development of Ajv support of [JSON Schema version 2019-09](https://tools.ietf.org/html/draft-handrews-json-schema-02) and of [JSON Type Definition](https://tools.ietf.org/html/draft-ucarion-json-type-definition-04). Ajv also joined [OpenJS Foundation](https://openjsf.org/) – having this support will help ensure the longevity and stability of Ajv for all its users. This [blog post](https://www.poberezkin.com/posts/2020-08-14-ajv-json-validator-mozilla-open-source-grant-openjs-foundation.html) has more details. I am looking for the long term maintainers of Ajv – working with [ReadySet](https://www.thereadyset.co/), also sponsored by Mozilla, to establish clear guidelines for the role of a "maintainer" and the contribution standards, and to encourage a wider, more inclusive, contribution from the community. ## Please [sponsor Ajv development](https://github.com/sponsors/epoberezkin) Since I asked to support Ajv development 40 people and 6 organizations contributed via GitHub and OpenCollective - this support helped receiving the MOSS grant! Your continuing support is very important - the funds will be used to develop and maintain Ajv once the next major version is released. Please sponsor Ajv via: - [GitHub sponsors page](https://github.com/sponsors/epoberezkin) (GitHub will match it) - [Ajv Open Collective️](https://opencollective.com/ajv) Thank you. #### Open Collective sponsors <a href="https://opencollective.com/ajv"><img src="https://opencollective.com/ajv/individuals.svg?width=890"></a> <a href="https://opencollective.com/ajv/organization/0/website"><img src="https://opencollective.com/ajv/organization/0/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/1/website"><img src="https://opencollective.com/ajv/organization/1/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/2/website"><img src="https://opencollective.com/ajv/organization/2/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/3/website"><img src="https://opencollective.com/ajv/organization/3/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/4/website"><img src="https://opencollective.com/ajv/organization/4/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/5/website"><img src="https://opencollective.com/ajv/organization/5/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/6/website"><img src="https://opencollective.com/ajv/organization/6/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/7/website"><img src="https://opencollective.com/ajv/organization/7/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/8/website"><img src="https://opencollective.com/ajv/organization/8/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/9/website"><img src="https://opencollective.com/ajv/organization/9/avatar.svg"></a> ## Using version 6 [JSON Schema draft-07](http://json-schema.org/latest/json-schema-validation.html) is published. [Ajv version 6.0.0](https://github.com/ajv-validator/ajv/releases/tag/v6.0.0) that supports draft-07 is released. It may require either migrating your schemas or updating your code (to continue using draft-04 and v5 schemas, draft-06 schemas will be supported without changes). __Please note__: To use Ajv with draft-06 schemas you need to explicitly add the meta-schema to the validator instance: ```javascript ajv.addMetaSchema(require('ajv/lib/refs/json-schema-draft-06.json')); ``` To use Ajv with draft-04 schemas in addition to explicitly adding meta-schema you also need to use option schemaId: ```javascript var ajv = new Ajv({schemaId: 'id'}); // If you want to use both draft-04 and draft-06/07 schemas: // var ajv = new Ajv({schemaId: 'auto'}); ajv.addMetaSchema(require('ajv/lib/refs/json-schema-draft-04.json')); ``` ## Contents - [Performance](#performance) - [Features](#features) - [Getting started](#getting-started) - [Frequently Asked Questions](https://github.com/ajv-validator/ajv/blob/master/FAQ.md) - [Using in browser](#using-in-browser) - [Ajv and Content Security Policies (CSP)](#ajv-and-content-security-policies-csp) - [Command line interface](#command-line-interface) - Validation - [Keywords](#validation-keywords) - [Annotation keywords](#annotation-keywords) - [Formats](#formats) - [Combining schemas with $ref](#ref) - [$data reference](#data-reference) - NEW: [$merge and $patch keywords](#merge-and-patch-keywords) - [Defining custom keywords](#defining-custom-keywords) - [Asynchronous schema compilation](#asynchronous-schema-compilation) - [Asynchronous validation](#asynchronous-validation) - [Security considerations](#security-considerations) - [Security contact](#security-contact) - [Untrusted schemas](#untrusted-schemas) - [Circular references in objects](#circular-references-in-javascript-objects) - [Trusted schemas](#security-risks-of-trusted-schemas) - [ReDoS attack](#redos-attack) - Modifying data during validation - [Filtering data](#filtering-data) - [Assigning defaults](#assigning-defaults) - [Coercing data types](#coercing-data-types) - API - [Methods](#api) - [Options](#options) - [Validation errors](#validation-errors) - [Plugins](#plugins) - [Related packages](#related-packages) - [Some packages using Ajv](#some-packages-using-ajv) - [Tests, Contributing, Changes history](#tests) - [Support, Code of conduct, License](#open-source-software-support) ## Performance Ajv generates code using [doT templates](https://github.com/olado/doT) to turn JSON Schemas into super-fast validation functions that are efficient for v8 optimization. Currently Ajv is the fastest and the most standard compliant validator according to these benchmarks: - [json-schema-benchmark](https://github.com/ebdrup/json-schema-benchmark) - 50% faster than the second place - [jsck benchmark](https://github.com/pandastrike/jsck#benchmarks) - 20-190% faster - [z-schema benchmark](https://rawgit.com/zaggino/z-schema/master/benchmark/results.html) - [themis benchmark](https://cdn.rawgit.com/playlyfe/themis/master/benchmark/results.html) Performance of different validators by [json-schema-benchmark](https://github.com/ebdrup/json-schema-benchmark): [](https://github.com/ebdrup/json-schema-benchmark/blob/master/README.md#performance) ## Features - Ajv implements full JSON Schema [draft-06/07](http://json-schema.org/) and draft-04 standards: - all validation keywords (see [JSON Schema validation keywords](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md)) - full support of remote refs (remote schemas have to be added with `addSchema` or compiled to be available) - support of circular references between schemas - correct string lengths for strings with unicode pairs (can be turned off) - [formats](#formats) defined by JSON Schema draft-07 standard and custom formats (can be turned off) - [validates schemas against meta-schema](#api-validateschema) - supports [browsers](#using-in-browser) and Node.js 0.10-14.x - [asynchronous loading](#asynchronous-schema-compilation) of referenced schemas during compilation - "All errors" validation mode with [option allErrors](#options) - [error messages with parameters](#validation-errors) describing error reasons to allow creating custom error messages - i18n error messages support with [ajv-i18n](https://github.com/ajv-validator/ajv-i18n) package - [filtering data](#filtering-data) from additional properties - [assigning defaults](#assigning-defaults) to missing properties and items - [coercing data](#coercing-data-types) to the types specified in `type` keywords - [custom keywords](#defining-custom-keywords) - draft-06/07 keywords `const`, `contains`, `propertyNames` and `if/then/else` - draft-06 boolean schemas (`true`/`false` as a schema to always pass/fail). - keywords `switch`, `patternRequired`, `formatMaximum` / `formatMinimum` and `formatExclusiveMaximum` / `formatExclusiveMinimum` from [JSON Schema extension proposals](https://github.com/json-schema/json-schema/wiki/v5-Proposals) with [ajv-keywords](https://github.com/ajv-validator/ajv-keywords) package - [$data reference](#data-reference) to use values from the validated data as values for the schema keywords - [asynchronous validation](#asynchronous-validation) of custom formats and keywords ## Install ``` npm install ajv ``` ## <a name="usage"></a>Getting started Try it in the Node.js REPL: https://tonicdev.com/npm/ajv The fastest validation call: ```javascript // Node.js require: var Ajv = require('ajv'); // or ESM/TypeScript import import Ajv from 'ajv'; var ajv = new Ajv(); // options can be passed, e.g. {allErrors: true} var validate = ajv.compile(schema); var valid = validate(data); if (!valid) console.log(validate.errors); ``` or with less code ```javascript // ... var valid = ajv.validate(schema, data); if (!valid) console.log(ajv.errors); // ... ``` or ```javascript // ... var valid = ajv.addSchema(schema, 'mySchema') .validate('mySchema', data); if (!valid) console.log(ajv.errorsText()); // ... ``` See [API](#api) and [Options](#options) for more details. Ajv compiles schemas to functions and caches them in all cases (using schema serialized with [fast-json-stable-stringify](https://github.com/epoberezkin/fast-json-stable-stringify) or a custom function as a key), so that the next time the same schema is used (not necessarily the same object instance) it won't be compiled again. The best performance is achieved when using compiled functions returned by `compile` or `getSchema` methods (there is no additional function call). __Please note__: every time a validation function or `ajv.validate` are called `errors` property is overwritten. You need to copy `errors` array reference to another variable if you want to use it later (e.g., in the callback). See [Validation errors](#validation-errors) __Note for TypeScript users__: `ajv` provides its own TypeScript declarations out of the box, so you don't need to install the deprecated `@types/ajv` module. ## Using in browser You can require Ajv directly from the code you browserify - in this case Ajv will be a part of your bundle. If you need to use Ajv in several bundles you can create a separate UMD bundle using `npm run bundle` script (thanks to [siddo420](https://github.com/siddo420)). Then you need to load Ajv in the browser: ```html <script src="ajv.min.js"></script> ``` This bundle can be used with different module systems; it creates global `Ajv` if no module system is found. The browser bundle is available on [cdnjs](https://cdnjs.com/libraries/ajv). Ajv is tested with these browsers: [](https://saucelabs.com/u/epoberezkin) __Please note__: some frameworks, e.g. Dojo, may redefine global require in such way that is not compatible with CommonJS module format. In such case Ajv bundle has to be loaded before the framework and then you can use global Ajv (see issue [#234](https://github.com/ajv-validator/ajv/issues/234)). ### Ajv and Content Security Policies (CSP) If you're using Ajv to compile a schema (the typical use) in a browser document that is loaded with a Content Security Policy (CSP), that policy will require a `script-src` directive that includes the value `'unsafe-eval'`. :warning: NOTE, however, that `unsafe-eval` is NOT recommended in a secure CSP[[1]](https://developer.chrome.com/extensions/contentSecurityPolicy#relaxing-eval), as it has the potential to open the document to cross-site scripting (XSS) attacks. In order to make use of Ajv without easing your CSP, you can [pre-compile a schema using the CLI](https://github.com/ajv-validator/ajv-cli#compile-schemas). This will transpile the schema JSON into a JavaScript file that exports a `validate` function that works simlarly to a schema compiled at runtime. Note that pre-compilation of schemas is performed using [ajv-pack](https://github.com/ajv-validator/ajv-pack) and there are [some limitations to the schema features it can compile](https://github.com/ajv-validator/ajv-pack#limitations). A successfully pre-compiled schema is equivalent to the same schema compiled at runtime. ## Command line interface CLI is available as a separate npm package [ajv-cli](https://github.com/ajv-validator/ajv-cli). It supports: - compiling JSON Schemas to test their validity - BETA: generating standalone module exporting a validation function to be used without Ajv (using [ajv-pack](https://github.com/ajv-validator/ajv-pack)) - migrate schemas to draft-07 (using [json-schema-migrate](https://github.com/epoberezkin/json-schema-migrate)) - validating data file(s) against JSON Schema - testing expected validity of data against JSON Schema - referenced schemas - custom meta-schemas - files in JSON, JSON5, YAML, and JavaScript format - all Ajv options - reporting changes in data after validation in [JSON-patch](https://tools.ietf.org/html/rfc6902) format ## Validation keywords Ajv supports all validation keywords from draft-07 of JSON Schema standard: - [type](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#type) - [for numbers](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#keywords-for-numbers) - maximum, minimum, exclusiveMaximum, exclusiveMinimum, multipleOf - [for strings](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#keywords-for-strings) - maxLength, minLength, pattern, format - [for arrays](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#keywords-for-arrays) - maxItems, minItems, uniqueItems, items, additionalItems, [contains](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#contains) - [for objects](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#keywords-for-objects) - maxProperties, minProperties, required, properties, patternProperties, additionalProperties, dependencies, [propertyNames](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#propertynames) - [for all types](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#keywords-for-all-types) - enum, [const](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#const) - [compound keywords](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#compound-keywords) - not, oneOf, anyOf, allOf, [if/then/else](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#ifthenelse) With [ajv-keywords](https://github.com/ajv-validator/ajv-keywords) package Ajv also supports validation keywords from [JSON Schema extension proposals](https://github.com/json-schema/json-schema/wiki/v5-Proposals) for JSON Schema standard: - [patternRequired](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#patternrequired-proposed) - like `required` but with patterns that some property should match. - [formatMaximum, formatMinimum, formatExclusiveMaximum, formatExclusiveMinimum](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md#formatmaximum--formatminimum-and-exclusiveformatmaximum--exclusiveformatminimum-proposed) - setting limits for date, time, etc. See [JSON Schema validation keywords](https://github.com/ajv-validator/ajv/blob/master/KEYWORDS.md) for more details. ## Annotation keywords JSON Schema specification defines several annotation keywords that describe schema itself but do not perform any validation. - `title` and `description`: information about the data represented by that schema - `$comment` (NEW in draft-07): information for developers. With option `$comment` Ajv logs or passes the comment string to the user-supplied function. See [Options](#options). - `default`: a default value of the data instance, see [Assigning defaults](#assigning-defaults). - `examples` (NEW in draft-06): an array of data instances. Ajv does not check the validity of these instances against the schema. - `readOnly` and `writeOnly` (NEW in draft-07): marks data-instance as read-only or write-only in relation to the source of the data (database, api, etc.). - `contentEncoding`: [RFC 2045](https://tools.ietf.org/html/rfc2045#section-6.1 ), e.g., "base64". - `contentMediaType`: [RFC 2046](https://tools.ietf.org/html/rfc2046), e.g., "image/png". __Please note__: Ajv does not implement validation of the keywords `examples`, `contentEncoding` and `contentMediaType` but it reserves them. If you want to create a plugin that implements some of them, it should remove these keywords from the instance. ## Formats Ajv implements formats defined by JSON Schema specification and several other formats. It is recommended NOT to use "format" keyword implementations with untrusted data, as they use potentially unsafe regular expressions - see [ReDoS attack](#redos-attack). __Please note__: if you need to use "format" keyword to validate untrusted data, you MUST assess their suitability and safety for your validation scenarios. The following formats are implemented for string validation with "format" keyword: - _date_: full-date according to [RFC3339](http://tools.ietf.org/html/rfc3339#section-5.6). - _time_: time with optional time-zone. - _date-time_: date-time from the same source (time-zone is mandatory). `date`, `time` and `date-time` validate ranges in `full` mode and only regexp in `fast` mode (see [options](#options)). - _uri_: full URI. - _uri-reference_: URI reference, including full and relative URIs. - _uri-template_: URI template according to [RFC6570](https://tools.ietf.org/html/rfc6570) - _url_ (deprecated): [URL record](https://url.spec.whatwg.org/#concept-url). - _email_: email address. - _hostname_: host name according to [RFC1034](http://tools.ietf.org/html/rfc1034#section-3.5). - _ipv4_: IP address v4. - _ipv6_: IP address v6. - _regex_: tests whether a string is a valid regular expression by passing it to RegExp constructor. - _uuid_: Universally Unique IDentifier according to [RFC4122](http://tools.ietf.org/html/rfc4122). - _json-pointer_: JSON-pointer according to [RFC6901](https://tools.ietf.org/html/rfc6901). - _relative-json-pointer_: relative JSON-pointer according to [this draft](http://tools.ietf.org/html/draft-luff-relative-json-pointer-00). __Please note__: JSON Schema draft-07 also defines formats `iri`, `iri-reference`, `idn-hostname` and `idn-email` for URLs, hostnames and emails with international characters. Ajv does not implement these formats. If you create Ajv plugin that implements them please make a PR to mention this plugin here. There are two modes of format validation: `fast` and `full`. This mode affects formats `date`, `time`, `date-time`, `uri`, `uri-reference`, and `email`. See [Options](#options) for details. You can add additional formats and replace any of the formats above using [addFormat](#api-addformat) method. The option `unknownFormats` allows changing the default behaviour when an unknown format is encountered. In this case Ajv can either fail schema compilation (default) or ignore it (default in versions before 5.0.0). You also can allow specific format(s) that will be ignored. See [Options](#options) for details. You can find regular expressions used for format validation and the sources that were used in [formats.js](https://github.com/ajv-validator/ajv/blob/master/lib/compile/formats.js). ## <a name="ref"></a>Combining schemas with $ref You can structure your validation logic across multiple schema files and have schemas reference each other using `$ref` keyword. Example: ```javascript var schema = { "$id": "http://example.com/schemas/schema.json", "type": "object", "properties": { "foo": { "$ref": "defs.json#/definitions/int" }, "bar": { "$ref": "defs.json#/definitions/str" } } }; var defsSchema = { "$id": "http://example.com/schemas/defs.json", "definitions": { "int": { "type": "integer" }, "str": { "type": "string" } } }; ``` Now to compile your schema you can either pass all schemas to Ajv instance: ```javascript var ajv = new Ajv({schemas: [schema, defsSchema]}); var validate = ajv.getSchema('http://example.com/schemas/schema.json'); ``` or use `addSchema` method: ```javascript var ajv = new Ajv; var validate = ajv.addSchema(defsSchema) .compile(schema); ``` See [Options](#options) and [addSchema](#api) method. __Please note__: - `$ref` is resolved as the uri-reference using schema $id as the base URI (see the example). - References can be recursive (and mutually recursive) to implement the schemas for different data structures (such as linked lists, trees, graphs, etc.). - You don't have to host your schema files at the URIs that you use as schema $id. These URIs are only used to identify the schemas, and according to JSON Schema specification validators should not expect to be able to download the schemas from these URIs. - The actual location of the schema file in the file system is not used. - You can pass the identifier of the schema as the second parameter of `addSchema` method or as a property name in `schemas` option. This identifier can be used instead of (or in addition to) schema $id. - You cannot have the same $id (or the schema identifier) used for more than one schema - the exception will be thrown. - You can implement dynamic resolution of the referenced schemas using `compileAsync` method. In this way you can store schemas in any system (files, web, database, etc.) and reference them without explicitly adding to Ajv instance. See [Asynchronous schema compilation](#asynchronous-schema-compilation). ## $data reference With `$data` option you can use values from the validated data as the values for the schema keywords. See [proposal](https://github.com/json-schema-org/json-schema-spec/issues/51) for more information about how it works. `$data` reference is supported in the keywords: const, enum, format, maximum/minimum, exclusiveMaximum / exclusiveMinimum, maxLength / minLength, maxItems / minItems, maxProperties / minProperties, formatMaximum / formatMinimum, formatExclusiveMaximum / formatExclusiveMinimum, multipleOf, pattern, required, uniqueItems. The value of "$data" should be a [JSON-pointer](https://tools.ietf.org/html/rfc6901) to the data (the root is always the top level data object, even if the $data reference is inside a referenced subschema) or a [relative JSON-pointer](http://tools.ietf.org/html/draft-luff-relative-json-pointer-00) (it is relative to the current point in data; if the $data reference is inside a referenced subschema it cannot point to the data outside of the root level for this subschema). Examples. This schema requires that the value in property `smaller` is less or equal than the value in the property larger: ```javascript var ajv = new Ajv({$data: true}); var schema = { "properties": { "smaller": { "type": "number", "maximum": { "$data": "1/larger" } }, "larger": { "type": "number" } } }; var validData = { smaller: 5, larger: 7 }; ajv.validate(schema, validData); // true ``` This schema requires that the properties have the same format as their field names: ```javascript var schema = { "additionalProperties": { "type": "string", "format": { "$data": "0#" } } }; var validData = { 'date-time': '1963-06-19T08:30:06.283185Z', email: 'joe.bloggs@example.com' } ``` `$data` reference is resolved safely - it won't throw even if some property is undefined. If `$data` resolves to `undefined` the validation succeeds (with the exclusion of `const` keyword). If `$data` resolves to incorrect type (e.g. not "number" for maximum keyword) the validation fails. ## $merge and $patch keywords With the package [ajv-merge-patch](https://github.com/ajv-validator/ajv-merge-patch) you can use the keywords `$merge` and `$patch` that allow extending JSON Schemas with patches using formats [JSON Merge Patch (RFC 7396)](https://tools.ietf.org/html/rfc7396) and [JSON Patch (RFC 6902)](https://tools.ietf.org/html/rfc6902). To add keywords `$merge` and `$patch` to Ajv instance use this code: ```javascript require('ajv-merge-patch')(ajv); ``` Examples. Using `$merge`: ```json { "$merge": { "source": { "type": "object", "properties": { "p": { "type": "string" } }, "additionalProperties": false }, "with": { "properties": { "q": { "type": "number" } } } } } ``` Using `$patch`: ```json { "$patch": { "source": { "type": "object", "properties": { "p": { "type": "string" } }, "additionalProperties": false }, "with": [ { "op": "add", "path": "/properties/q", "value": { "type": "number" } } ] } } ``` The schemas above are equivalent to this schema: ```json { "type": "object", "properties": { "p": { "type": "string" }, "q": { "type": "number" } }, "additionalProperties": false } ``` The properties `source` and `with` in the keywords `$merge` and `$patch` can use absolute or relative `$ref` to point to other schemas previously added to the Ajv instance or to the fragments of the current schema. See the package [ajv-merge-patch](https://github.com/ajv-validator/ajv-merge-patch) for more information. ## Defining custom keywords The advantages of using custom keywords are: - allow creating validation scenarios that cannot be expressed using JSON Schema - simplify your schemas - help bringing a bigger part of the validation logic to your schemas - make your schemas more expressive, less verbose and closer to your application domain - implement custom data processors that modify your data (`modifying` option MUST be used in keyword definition) and/or create side effects while the data is being validated If a keyword is used only for side-effects and its validation result is pre-defined, use option `valid: true/false` in keyword definition to simplify both generated code (no error handling in case of `valid: true`) and your keyword functions (no need to return any validation result). The concerns you have to be aware of when extending JSON Schema standard with custom keywords are the portability and understanding of your schemas. You will have to support these custom keywords on other platforms and to properly document these keywords so that everybody can understand them in your schemas. You can define custom keywords with [addKeyword](#api-addkeyword) method. Keywords are defined on the `ajv` instance level - new instances will not have previously defined keywords. Ajv allows defining keywords with: - validation function - compilation function - macro function - inline compilation function that should return code (as string) that will be inlined in the currently compiled schema. Example. `range` and `exclusiveRange` keywords using compiled schema: ```javascript ajv.addKeyword('range', { type: 'number', compile: function (sch, parentSchema) { var min = sch[0]; var max = sch[1]; return parentSchema.exclusiveRange === true ? function (data) { return data > min && data < max; } : function (data) { return data >= min && data <= max; } } }); var schema = { "range": [2, 4], "exclusiveRange": true }; var validate = ajv.compile(schema); console.log(validate(2.01)); // true console.log(validate(3.99)); // true console.log(validate(2)); // false console.log(validate(4)); // false ``` Several custom keywords (typeof, instanceof, range and propertyNames) are defined in [ajv-keywords](https://github.com/ajv-validator/ajv-keywords) package - they can be used for your schemas and as a starting point for your own custom keywords. See [Defining custom keywords](https://github.com/ajv-validator/ajv/blob/master/CUSTOM.md) for more details. ## Asynchronous schema compilation During asynchronous compilation remote references are loaded using supplied function. See `compileAsync` [method](#api-compileAsync) and `loadSchema` [option](#options). Example: ```javascript var ajv = new Ajv({ loadSchema: loadSchema }); ajv.compileAsync(schema).then(function (validate) { var valid = validate(data); // ... }); function loadSchema(uri) { return request.json(uri).then(function (res) { if (res.statusCode >= 400) throw new Error('Loading error: ' + res.statusCode); return res.body; }); } ``` __Please note__: [Option](#options) `missingRefs` should NOT be set to `"ignore"` or `"fail"` for asynchronous compilation to work. ## Asynchronous validation Example in Node.js REPL: https://tonicdev.com/esp/ajv-asynchronous-validation You can define custom formats and keywords that perform validation asynchronously by accessing database or some other service. You should add `async: true` in the keyword or format definition (see [addFormat](#api-addformat), [addKeyword](#api-addkeyword) and [Defining custom keywords](#defining-custom-keywords)). If your schema uses asynchronous formats/keywords or refers to some schema that contains them it should have `"$async": true` keyword so that Ajv can compile it correctly. If asynchronous format/keyword or reference to asynchronous schema is used in the schema without `$async` keyword Ajv will throw an exception during schema compilation. __Please note__: all asynchronous subschemas that are referenced from the current or other schemas should have `"$async": true` keyword as well, otherwise the schema compilation will fail. Validation function for an asynchronous custom format/keyword should return a promise that resolves with `true` or `false` (or rejects with `new Ajv.ValidationError(errors)` if you want to return custom errors from the keyword function). Ajv compiles asynchronous schemas to [es7 async functions](http://tc39.github.io/ecmascript-asyncawait/) that can optionally be transpiled with [nodent](https://github.com/MatAtBread/nodent). Async functions are supported in Node.js 7+ and all modern browsers. You can also supply any other transpiler as a function via `processCode` option. See [Options](#options). The compiled validation function has `$async: true` property (if the schema is asynchronous), so you can differentiate these functions if you are using both synchronous and asynchronous schemas. Validation result will be a promise that resolves with validated data or rejects with an exception `Ajv.ValidationError` that contains the array of validation errors in `errors` property. Example: ```javascript var ajv = new Ajv; // require('ajv-async')(ajv); ajv.addKeyword('idExists', { async: true, type: 'number', validate: checkIdExists }); function checkIdExists(schema, data) { return knex(schema.table) .select('id') .where('id', data) .then(function (rows) { return !!rows.length; // true if record is found }); } var schema = { "$async": true, "properties": { "userId": { "type": "integer", "idExists": { "table": "users" } }, "postId": { "type": "integer", "idExists": { "table": "posts" } } } }; var validate = ajv.compile(schema); validate({ userId: 1, postId: 19 }) .then(function (data) { console.log('Data is valid', data); // { userId: 1, postId: 19 } }) .catch(function (err) { if (!(err instanceof Ajv.ValidationError)) throw err; // data is invalid console.log('Validation errors:', err.errors); }); ``` ### Using transpilers with asynchronous validation functions. [ajv-async](https://github.com/ajv-validator/ajv-async) uses [nodent](https://github.com/MatAtBread/nodent) to transpile async functions. To use another transpiler you should separately install it (or load its bundle in the browser). #### Using nodent ```javascript var ajv = new Ajv; require('ajv-async')(ajv); // in the browser if you want to load ajv-async bundle separately you can: // window.ajvAsync(ajv); var validate = ajv.compile(schema); // transpiled es7 async function validate(data).then(successFunc).catch(errorFunc); ``` #### Using other transpilers ```javascript var ajv = new Ajv({ processCode: transpileFunc }); var validate = ajv.compile(schema); // transpiled es7 async function validate(data).then(successFunc).catch(errorFunc); ``` See [Options](#options). ## Security considerations JSON Schema, if properly used, can replace data sanitisation. It doesn't replace other API security considerations. It also introduces additional security aspects to consider. ##### Security contact To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. Please do NOT report security vulnerabilities via GitHub issues. ##### Untrusted schemas Ajv treats JSON schemas as trusted as your application code. This security model is based on the most common use case, when the schemas are static and bundled together with the application. If your schemas are received from untrusted sources (or generated from untrusted data) there are several scenarios you need to prevent: - compiling schemas can cause stack overflow (if they are too deep) - compiling schemas can be slow (e.g. [#557](https://github.com/ajv-validator/ajv/issues/557)) - validating certain data can be slow It is difficult to predict all the scenarios, but at the very least it may help to limit the size of untrusted schemas (e.g. limit JSON string length) and also the maximum schema object depth (that can be high for relatively small JSON strings). You also may want to mitigate slow regular expressions in `pattern` and `patternProperties` keywords. Regardless the measures you take, using untrusted schemas increases security risks. ##### Circular references in JavaScript objects Ajv does not support schemas and validated data that have circular references in objects. See [issue #802](https://github.com/ajv-validator/ajv/issues/802). An attempt to compile such schemas or validate such data would cause stack overflow (or will not complete in case of asynchronous validation). Depending on the parser you use, untrusted data can lead to circular references. ##### Security risks of trusted schemas Some keywords in JSON Schemas can lead to very slow validation for certain data. These keywords include (but may be not limited to): - `pattern` and `format` for large strings - in some cases using `maxLength` can help mitigate it, but certain regular expressions can lead to exponential validation time even with relatively short strings (see [ReDoS attack](#redos-attack)). - `patternProperties` for large property names - use `propertyNames` to mitigate, but some regular expressions can have exponential evaluation time as well. - `uniqueItems` for large non-scalar arrays - use `maxItems` to mitigate __Please note__: The suggestions above to prevent slow validation would only work if you do NOT use `allErrors: true` in production code (using it would continue validation after validation errors). You can validate your JSON schemas against [this meta-schema](https://github.com/ajv-validator/ajv/blob/master/lib/refs/json-schema-secure.json) to check that these recommendations are followed: ```javascript const isSchemaSecure = ajv.compile(require('ajv/lib/refs/json-schema-secure.json')); const schema1 = {format: 'email'}; isSchemaSecure(schema1); // false const schema2 = {format: 'email', maxLength: MAX_LENGTH}; isSchemaSecure(schema2); // true ``` __Please note__: following all these recommendation is not a guarantee that validation of untrusted data is safe - it can still lead to some undesirable results. ##### Content Security Policies (CSP) See [Ajv and Content Security Policies (CSP)](#ajv-and-content-security-policies-csp) ## ReDoS attack Certain regular expressions can lead to the exponential evaluation time even with relatively short strings. Please assess the regular expressions you use in the schemas on their vulnerability to this attack - see [safe-regex](https://github.com/substack/safe-regex), for example. __Please note__: some formats that Ajv implements use [regular expressions](https://github.com/ajv-validator/ajv/blob/master/lib/compile/formats.js) that can be vulnerable to ReDoS attack, so if you use Ajv to validate data from untrusted sources __it is strongly recommended__ to consider the following: - making assessment of "format" implementations in Ajv. - using `format: 'fast'` option that simplifies some of the regular expressions (although it does not guarantee that they are safe). - replacing format implementations provided by Ajv with your own implementations of "format" keyword that either uses different regular expressions or another approach to format validation. Please see [addFormat](#api-addformat) method. - disabling format validation by ignoring "format" keyword with option `format: false` Whatever mitigation you choose, please assume all formats provided by Ajv as potentially unsafe and make your own assessment of their suitability for your validation scenarios. ## Filtering data With [option `removeAdditional`](#options) (added by [andyscott](https://github.com/andyscott)) you can filter data during the validation. This option modifies original data. Example: ```javascript var ajv = new Ajv({ removeAdditional: true }); var schema = { "additionalProperties": false, "properties": { "foo": { "type": "number" }, "bar": { "additionalProperties": { "type": "number" }, "properties": { "baz": { "type": "string" } } } } } var data = { "foo": 0, "additional1": 1, // will be removed; `additionalProperties` == false "bar": { "baz": "abc", "additional2": 2 // will NOT be removed; `additionalProperties` != false }, } var validate = ajv.compile(schema); console.log(validate(data)); // true console.log(data); // { "foo": 0, "bar": { "baz": "abc", "additional2": 2 } ``` If `removeAdditional` option in the example above were `"all"` then both `additional1` and `additional2` properties would have been removed. If the option were `"failing"` then property `additional1` would have been removed regardless of its value and property `additional2` would have been removed only if its value were failing the schema in the inner `additionalProperties` (so in the example above it would have stayed because it passes the schema, but any non-number would have been removed). __Please note__: If you use `removeAdditional` option with `additionalProperties` keyword inside `anyOf`/`oneOf` keywords your validation can fail with this schema, for example: ```json { "type": "object", "oneOf": [ { "properties": { "foo": { "type": "string" } }, "required": [ "foo" ], "additionalProperties": false }, { "properties": { "bar": { "type": "integer" } }, "required": [ "bar" ], "additionalProperties": false } ] } ``` The intention of the schema above is to allow objects with either the string property "foo" or the integer property "bar", but not with both and not with any other properties. With the option `removeAdditional: true` the validation will pass for the object `{ "foo": "abc"}` but will fail for the object `{"bar": 1}`. It happens because while the first subschema in `oneOf` is validated, the property `bar` is removed because it is an additional property according to the standard (because it is not included in `properties` keyword in the same schema). While this behaviour is unexpected (issues [#129](https://github.com/ajv-validator/ajv/issues/129), [#134](https://github.com/ajv-validator/ajv/issues/134)), it is correct. To have the expected behaviour (both objects are allowed and additional properties are removed) the schema has to be refactored in this way: ```json { "type": "object", "properties": { "foo": { "type": "string" }, "bar": { "type": "integer" } }, "additionalProperties": false, "oneOf": [ { "required": [ "foo" ] }, { "required": [ "bar" ] } ] } ``` The schema above is also more efficient - it will compile into a faster function. ## Assigning defaults With [option `useDefaults`](#options) Ajv will assign values from `default` keyword in the schemas of `properties` and `items` (when it is the array of schemas) to the missing properties and items. With the option value `"empty"` properties and items equal to `null` or `""` (empty string) will be considered missing and assigned defaults. This option modifies original data. __Please note__: the default value is inserted in the generated validation code as a literal, so the value inserted in the data will be the deep clone of the default in the schema. Example 1 (`default` in `properties`): ```javascript var ajv = new Ajv({ useDefaults: true }); var schema = { "type": "object", "properties": { "foo": { "type": "number" }, "bar": { "type": "string", "default": "baz" } }, "required": [ "foo", "bar" ] }; var data = { "foo": 1 }; var validate = ajv.compile(schema); console.log(validate(data)); // true console.log(data); // { "foo": 1, "bar": "baz" } ``` Example 2 (`default` in `items`): ```javascript var schema = { "type": "array", "items": [ { "type": "number" }, { "type": "string", "default": "foo" } ] } var data = [ 1 ]; var validate = ajv.compile(schema); console.log(validate(data)); // true console.log(data); // [ 1, "foo" ] ``` `default` keywords in other cases are ignored: - not in `properties` or `items` subschemas - in schemas inside `anyOf`, `oneOf` and `not` (see [#42](https://github.com/ajv-validator/ajv/issues/42)) - in `if` subschema of `switch` keyword - in schemas generated by custom macro keywords The [`strictDefaults` option](#options) customizes Ajv's behavior for the defaults that Ajv ignores (`true` raises an error, and `"log"` outputs a warning). ## Coercing data types When you are validating user inputs all your data properties are usually strings. The option `coerceTypes` allows you to have your data types coerced to the types specified in your schema `type` keywords, both to pass the validation and to use the correctly typed data afterwards. This option modifies original data. __Please note__: if you pass a scalar value to the validating function its type will be coerced and it will pass the validation, but the value of the variable you pass won't be updated because scalars are passed by value. Example 1: ```javascript var ajv = new Ajv({ coerceTypes: true }); var schema = { "type": "object", "properties": { "foo": { "type": "number" }, "bar": { "type": "boolean" } }, "required": [ "foo", "bar" ] }; var data = { "foo": "1", "bar": "false" }; var validate = ajv.compile(schema); console.log(validate(data)); // true console.log(data); // { "foo": 1, "bar": false } ``` Example 2 (array coercions): ```javascript var ajv = new Ajv({ coerceTypes: 'array' }); var schema = { "properties": { "foo": { "type": "array", "items": { "type": "number" } }, "bar": { "type": "boolean" } } }; var data = { "foo": "1", "bar": ["false"] }; var validate = ajv.compile(schema); console.log(validate(data)); // true console.log(data); // { "foo": [1], "bar": false } ``` The coercion rules, as you can see from the example, are different from JavaScript both to validate user input as expected and to have the coercion reversible (to correctly validate cases where different types are defined in subschemas of "anyOf" and other compound keywords). See [Coercion rules](https://github.com/ajv-validator/ajv/blob/master/COERCION.md) for details. ## API ##### new Ajv(Object options) -&gt; Object Create Ajv instance. ##### .compile(Object schema) -&gt; Function&lt;Object data&gt; Generate validating function and cache the compiled schema for future use. Validating function returns a boolean value. This function has properties `errors` and `schema`. Errors encountered during the last validation are assigned to `errors` property (it is assigned `null` if there was no errors). `schema` property contains the reference to the original schema. The schema passed to this method will be validated against meta-schema unless `validateSchema` option is false. If schema is invalid, an error will be thrown. See [options](#options). ##### <a name="api-compileAsync"></a>.compileAsync(Object schema [, Boolean meta] [, Function callback]) -&gt; Promise Asynchronous version of `compile` method that loads missing remote schemas using asynchronous function in `options.loadSchema`. This function returns a Promise that resolves to a validation function. An optional callback passed to `compileAsync` will be called with 2 parameters: error (or null) and validating function. The returned promise will reject (and the callback will be called with an error) when: - missing schema can't be loaded (`loadSchema` returns a Promise that rejects). - a schema containing a missing reference is loaded, but the reference cannot be resolved. - schema (or some loaded/referenced schema) is invalid. The function compiles schema and loads the first missing schema (or meta-schema) until all missing schemas are loaded. You can asynchronously compile meta-schema by passing `true` as the second parameter. See example in [Asynchronous compilation](#asynchronous-schema-compilation). ##### .validate(Object schema|String key|String ref, data) -&gt; Boolean Validate data using passed schema (it will be compiled and cached). Instead of the schema you can use the key that was previously passed to `addSchema`, the schema id if it was present in the schema or any previously resolved reference. Validation errors will be available in the `errors` property of Ajv instance (`null` if there were no errors). __Please note__: every time this method is called the errors are overwritten so you need to copy them to another variable if you want to use them later. If the schema is asynchronous (has `$async` keyword on the top level) this method returns a Promise. See [Asynchronous validation](#asynchronous-validation). ##### .addSchema(Array&lt;Object&gt;|Object schema [, String key]) -&gt; Ajv Add schema(s) to validator instance. This method does not compile schemas (but it still validates them). Because of that dependencies can be added in any order and circular dependencies are supported. It also prevents unnecessary compilation of schemas that are containers for other schemas but not used as a whole. Array of schemas can be passed (schemas should have ids), the second parameter will be ignored. Key can be passed that can be used to reference the schema and will be used as the schema id if there is no id inside the schema. If the key is not passed, the schema id will be used as the key. Once the schema is added, it (and all the references inside it) can be referenced in other schemas and used to validate data. Although `addSchema` does not compile schemas, explicit compilation is not required - the schema will be compiled when it is used first time. By default the schema is validated against meta-schema before it is added, and if the schema does not pass validation the exception is thrown. This behaviour is controlled by `validateSchema` option. __Please note__: Ajv uses the [method chaining syntax](https://en.wikipedia.org/wiki/Method_chaining) for all methods with the prefix `add*` and `remove*`. This allows you to do nice things like the following. ```javascript var validate = new Ajv().addSchema(schema).addFormat(name, regex).getSchema(uri); ``` ##### .addMetaSchema(Array&lt;Object&gt;|Object schema [, String key]) -&gt; Ajv Adds meta schema(s) that can be used to validate other schemas. That function should be used instead of `addSchema` because there may be instance options that would compile a meta schema incorrectly (at the moment it is `removeAdditional` option). There is no need to explicitly add draft-07 meta schema (http://json-schema.org/draft-07/schema) - it is added by default, unless option `meta` is set to `false`. You only need to use it if you have a changed meta-schema that you want to use to validate your schemas. See `validateSchema`. ##### <a name="api-validateschema"></a>.validateSchema(Object schema) -&gt; Boolean Validates schema. This method should be used to validate schemas rather than `validate` due to the inconsistency of `uri` format in JSON Schema standard. By default this method is called automatically when the schema is added, so you rarely need to use it directly. If schema doesn't have `$schema` property, it is validated against draft 6 meta-schema (option `meta` should not be false). If schema has `$schema` property, then the schema with this id (that should be previously added) is used to validate passed schema. Errors will be available at `ajv.errors`. ##### .getSchema(String key) -&gt; Function&lt;Object data&gt; Retrieve compiled schema previously added with `addSchema` by the key passed to `addSchema` or by its full reference (id). The returned validating function has `schema` property with the reference to the original schema. ##### .removeSchema([Object schema|String key|String ref|RegExp pattern]) -&gt; Ajv Remove added/cached schema. Even if schema is referenced by other schemas it can be safely removed as dependent schemas have local references. Schema can be removed using: - key passed to `addSchema` - it's full reference (id) - RegExp that should match schema id or key (meta-schemas won't be removed) - actual schema object that will be stable-stringified to remove schema from cache If no parameter is passed all schemas but meta-schemas will be removed and the cache will be cleared. ##### <a name="api-addformat"></a>.addFormat(String name, String|RegExp|Function|Object format) -&gt; Ajv Add custom format to validate strings or numbers. It can also be used to replace pre-defined formats for Ajv instance. Strings are converted to RegExp. Function should return validation result as `true` or `false`. If object is passed it should have properties `validate`, `compare` and `async`: - _validate_: a string, RegExp or a function as described above. - _compare_: an optional comparison function that accepts two strings and compares them according to the format meaning. This function is used with keywords `formatMaximum`/`formatMinimum` (defined in [ajv-keywords](https://github.com/ajv-validator/ajv-keywords) package). It should return `1` if the first value is bigger than the second value, `-1` if it is smaller and `0` if it is equal. - _async_: an optional `true` value if `validate` is an asynchronous function; in this case it should return a promise that resolves with a value `true` or `false`. - _type_: an optional type of data that the format applies to. It can be `"string"` (default) or `"number"` (see https://github.com/ajv-validator/ajv/issues/291#issuecomment-259923858). If the type of data is different, the validation will pass. Custom formats can be also added via `formats` option. ##### <a name="api-addkeyword"></a>.addKeyword(String keyword, Object definition) -&gt; Ajv Add custom validation keyword to Ajv instance. Keyword should be different from all standard JSON Schema keywords and different from previously defined keywords. There is no way to redefine keywords or to remove keyword definition from the instance. Keyword must start with a letter, `_` or `$`, and may continue with letters, numbers, `_`, `$`, or `-`. It is recommended to use an application-specific prefix for keywords to avoid current and future name collisions. Example Keywords: - `"xyz-example"`: valid, and uses prefix for the xyz project to avoid name collisions. - `"example"`: valid, but not recommended as it could collide with future versions of JSON Schema etc. - `"3-example"`: invalid as numbers are not allowed to be the first character in a keyword Keyword definition is an object with the following properties: - _type_: optional string or array of strings with data type(s) that the keyword applies to. If not present, the keyword will apply to all types. - _validate_: validating function - _compile_: compiling function - _macro_: macro function - _inline_: compiling function that returns code (as string) - _schema_: an optional `false` value used with "validate" keyword to not pass schema - _metaSchema_: an optional meta-schema for keyword schema - _dependencies_: an optional list of properties that must be present in the parent schema - it will be checked during schema compilation - _modifying_: `true` MUST be passed if keyword modifies data - _statements_: `true` can be passed in case inline keyword generates statements (as opposed to expression) - _valid_: pass `true`/`false` to pre-define validation result, the result returned from validation function will be ignored. This option cannot be used with macro keywords. - _$data_: an optional `true` value to support [$data reference](#data-reference) as the value of custom keyword. The reference will be resolved at validation time. If the keyword has meta-schema it would be extended to allow $data and it will be used to validate the resolved value. Supporting $data reference requires that keyword has validating function (as the only option or in addition to compile, macro or inline function). - _async_: an optional `true` value if the validation function is asynchronous (whether it is compiled or passed in _validate_ property); in this case it should return a promise that resolves with a value `true` or `false`. This option is ignored in case of "macro" and "inline" keywords. - _errors_: an optional boolean or string `"full"` indicating whether keyword returns errors. If this property is not set Ajv will determine if the errors were set in case of failed validation. _compile_, _macro_ and _inline_ are mutually exclusive, only one should be used at a time. _validate_ can be used separately or in addition to them to support $data reference. __Please note__: If the keyword is validating data type that is different from the type(s) in its definition, the validation function will not be called (and expanded macro will not be used), so there is no need to check for data type inside validation function or inside schema returned by macro function (unless you want to enforce a specific type and for some reason do not want to use a separate `type` keyword for that). In the same way as standard keywords work, if the keyword does not apply to the data type being validated, the validation of this keyword will succeed. See [Defining custom keywords](#defining-custom-keywords) for more details. ##### .getKeyword(String keyword) -&gt; Object|Boolean Returns custom keyword definition, `true` for pre-defined keywords and `false` if the keyword is unknown. ##### .removeKeyword(String keyword) -&gt; Ajv Removes custom or pre-defined keyword so you can redefine them. While this method can be used to extend pre-defined keywords, it can also be used to completely change their meaning - it may lead to unexpected results. __Please note__: schemas compiled before the keyword is removed will continue to work without changes. To recompile schemas use `removeSchema` method and compile them again. ##### .errorsText([Array&lt;Object&gt; errors [, Object options]]) -&gt; String Returns the text with all errors in a String. Options can have properties `separator` (string used to separate errors, ", " by default) and `dataVar` (the variable name that dataPaths are prefixed with, "data" by default). ## Options Defaults: ```javascript { // validation and reporting options: $data: false, allErrors: false, verbose: false, $comment: false, // NEW in Ajv version 6.0 jsonPointers: false, uniqueItems: true, unicode: true, nullable: false, format: 'fast', formats: {}, unknownFormats: true, schemas: {}, logger: undefined, // referenced schema options: schemaId: '$id', missingRefs: true, extendRefs: 'ignore', // recommended 'fail' loadSchema: undefined, // function(uri: string): Promise {} // options to modify validated data: removeAdditional: false, useDefaults: false, coerceTypes: false, // strict mode options strictDefaults: false, strictKeywords: false, strictNumbers: false, // asynchronous validation options: transpile: undefined, // requires ajv-async package // advanced options: meta: true, validateSchema: true, addUsedSchema: true, inlineRefs: true, passContext: false, loopRequired: Infinity, ownProperties: false, multipleOfPrecision: false, errorDataPath: 'object', // deprecated messages: true, sourceCode: false, processCode: undefined, // function (str: string, schema: object): string {} cache: new Cache, serialize: undefined } ``` ##### Validation and reporting options - _$data_: support [$data references](#data-reference). Draft 6 meta-schema that is added by default will be extended to allow them. If you want to use another meta-schema you need to use $dataMetaSchema method to add support for $data reference. See [API](#api). - _allErrors_: check all rules collecting all errors. Default is to return after the first error. - _verbose_: include the reference to the part of the schema (`schema` and `parentSchema`) and validated data in errors (false by default). - _$comment_ (NEW in Ajv version 6.0): log or pass the value of `$comment` keyword to a function. Option values: - `false` (default): ignore $comment keyword. - `true`: log the keyword value to console. - function: pass the keyword value, its schema path and root schema to the specified function - _jsonPointers_: set `dataPath` property of errors using [JSON Pointers](https://tools.ietf.org/html/rfc6901) instead of JavaScript property access notation. - _uniqueItems_: validate `uniqueItems` keyword (true by default). - _unicode_: calculate correct length of strings with unicode pairs (true by default). Pass `false` to use `.length` of strings that is faster, but gives "incorrect" lengths of strings with unicode pairs - each unicode pair is counted as two characters. - _nullable_: support keyword "nullable" from [Open API 3 specification](https://swagger.io/docs/specification/data-models/data-types/). - _format_: formats validation mode. Option values: - `"fast"` (default) - simplified and fast validation (see [Formats](#formats) for details of which formats are available and affected by this option). - `"full"` - more restrictive and slow validation. E.g., 25:00:00 and 2015/14/33 will be invalid time and date in 'full' mode but it will be valid in 'fast' mode. - `false` - ignore all format keywords. - _formats_: an object with custom formats. Keys and values will be passed to `addFormat` method. - _keywords_: an object with custom keywords. Keys and values will be passed to `addKeyword` method. - _unknownFormats_: handling of unknown formats. Option values: - `true` (default) - if an unknown format is encountered the exception is thrown during schema compilation. If `format` keyword value is [$data reference](#data-reference) and it is unknown the validation will fail. - `[String]` - an array of unknown format names that will be ignored. This option can be used to allow usage of third party schemas with format(s) for which you don't have definitions, but still fail if another unknown format is used. If `format` keyword value is [$data reference](#data-reference) and it is not in this array the validation will fail. - `"ignore"` - to log warning during schema compilation and always pass validation (the default behaviour in versions before 5.0.0). This option is not recommended, as it allows to mistype format name and it won't be validated without any error message. This behaviour is required by JSON Schema specification. - _schemas_: an array or object of schemas that will be added to the instance. In case you pass the array the schemas must have IDs in them. When the object is passed the method `addSchema(value, key)` will be called for each schema in this object. - _logger_: sets the logging method. Default is the global `console` object that should have methods `log`, `warn` and `error`. See [Error logging](#error-logging). Option values: - custom logger - it should have methods `log`, `warn` and `error`. If any of these methods is missing an exception will be thrown. - `false` - logging is disabled. ##### Referenced schema options - _schemaId_: this option defines which keywords are used as schema URI. Option value: - `"$id"` (default) - only use `$id` keyword as schema URI (as specified in JSON Schema draft-06/07), ignore `id` keyword (if it is present a warning will be logged). - `"id"` - only use `id` keyword as schema URI (as specified in JSON Schema draft-04), ignore `$id` keyword (if it is present a warning will be logged). - `"auto"` - use both `$id` and `id` keywords as schema URI. If both are present (in the same schema object) and different the exception will be thrown during schema compilation. - _missingRefs_: handling of missing referenced schemas. Option values: - `true` (default) - if the reference cannot be resolved during compilation the exception is thrown. The thrown error has properties `missingRef` (with hash fragment) and `missingSchema` (without it). Both properties are resolved relative to the current base id (usually schema id, unless it was substituted). - `"ignore"` - to log error during compilation and always pass validation. - `"fail"` - to log error and successfully compile schema but fail validation if this rule is checked. - _extendRefs_: validation of other keywords when `$ref` is present in the schema. Option values: - `"ignore"` (default) - when `$ref` is used other keywords are ignored (as per [JSON Reference](https://tools.ietf.org/html/draft-pbryan-zyp-json-ref-03#section-3) standard). A warning will be logged during the schema compilation. - `"fail"` (recommended) - if other validation keywords are used together with `$ref` the exception will be thrown when the schema is compiled. This option is recommended to make sure schema has no keywords that are ignored, which can be confusing. - `true` - validate all keywords in the schemas with `$ref` (the default behaviour in versions before 5.0.0). - _loadSchema_: asynchronous function that will be used to load remote schemas when `compileAsync` [method](#api-compileAsync) is used and some reference is missing (option `missingRefs` should NOT be 'fail' or 'ignore'). This function should accept remote schema uri as a parameter and return a Promise that resolves to a schema. See example in [Asynchronous compilation](#asynchronous-schema-compilation). ##### Options to modify validated data - _removeAdditional_: remove additional properties - see example in [Filtering data](#filtering-data). This option is not used if schema is added with `addMetaSchema` method. Option values: - `false` (default) - not to remove additional properties - `"all"` - all additional properties are removed, regardless of `additionalProperties` keyword in schema (and no validation is made for them). - `true` - only additional properties with `additionalProperties` keyword equal to `false` are removed. - `"failing"` - additional properties that fail schema validation will be removed (where `additionalProperties` keyword is `false` or schema). - _useDefaults_: replace missing or undefined properties and items with the values from corresponding `default` keywords. Default behaviour is to ignore `default` keywords. This option is not used if schema is added with `addMetaSchema` method. See examples in [Assigning defaults](#assigning-defaults). Option values: - `false` (default) - do not use defaults - `true` - insert defaults by value (object literal is used). - `"empty"` - in addition to missing or undefined, use defaults for properties and items that are equal to `null` or `""` (an empty string). - `"shared"` (deprecated) - insert defaults by reference. If the default is an object, it will be shared by all instances of validated data. If you modify the inserted default in the validated data, it will be modified in the schema as well. - _coerceTypes_: change data type of data to match `type` keyword. See the example in [Coercing data types](#coercing-data-types) and [coercion rules](https://github.com/ajv-validator/ajv/blob/master/COERCION.md). Option values: - `false` (default) - no type coercion. - `true` - coerce scalar data types. - `"array"` - in addition to coercions between scalar types, coerce scalar data to an array with one element and vice versa (as required by the schema). ##### Strict mode options - _strictDefaults_: report ignored `default` keywords in schemas. Option values: - `false` (default) - ignored defaults are not reported - `true` - if an ignored default is present, throw an error - `"log"` - if an ignored default is present, log warning - _strictKeywords_: report unknown keywords in schemas. Option values: - `false` (default) - unknown keywords are not reported - `true` - if an unknown keyword is present, throw an error - `"log"` - if an unknown keyword is present, log warning - _strictNumbers_: validate numbers strictly, failing validation for NaN and Infinity. Option values: - `false` (default) - NaN or Infinity will pass validation for numeric types - `true` - NaN or Infinity will not pass validation for numeric types ##### Asynchronous validation options - _transpile_: Requires [ajv-async](https://github.com/ajv-validator/ajv-async) package. It determines whether Ajv transpiles compiled asynchronous validation function. Option values: - `undefined` (default) - transpile with [nodent](https://github.com/MatAtBread/nodent) if async functions are not supported. - `true` - always transpile with nodent. - `false` - do not transpile; if async functions are not supported an exception will be thrown. ##### Advanced options - _meta_: add [meta-schema](http://json-schema.org/documentation.html) so it can be used by other schemas (true by default). If an object is passed, it will be used as the default meta-schema for schemas that have no `$schema` keyword. This default meta-schema MUST have `$schema` keyword. - _validateSchema_: validate added/compiled schemas against meta-schema (true by default). `$schema` property in the schema can be http://json-schema.org/draft-07/schema or absent (draft-07 meta-schema will be used) or can be a reference to the schema previously added with `addMetaSchema` method. Option values: - `true` (default) - if the validation fails, throw the exception. - `"log"` - if the validation fails, log error. - `false` - skip schema validation. - _addUsedSchema_: by default methods `compile` and `validate` add schemas to the instance if they have `$id` (or `id`) property that doesn't start with "#". If `$id` is present and it is not unique the exception will be thrown. Set this option to `false` to skip adding schemas to the instance and the `$id` uniqueness check when these methods are used. This option does not affect `addSchema` method. - _inlineRefs_: Affects compilation of referenced schemas. Option values: - `true` (default) - the referenced schemas that don't have refs in them are inlined, regardless of their size - that substantially improves performance at the cost of the bigger size of compiled schema functions. - `false` - to not inline referenced schemas (they will be compiled as separate functions). - integer number - to limit the maximum number of keywords of the schema that will be inlined. - _passContext_: pass validation context to custom keyword functions. If this option is `true` and you pass some context to the compiled validation function with `validate.call(context, data)`, the `context` will be available as `this` in your custom keywords. By default `this` is Ajv instance. - _loopRequired_: by default `required` keyword is compiled into a single expression (or a sequence of statements in `allErrors` mode). In case of a very large number of properties in this keyword it may result in a very big validation function. Pass integer to set the number of properties above which `required` keyword will be validated in a loop - smaller validation function size but also worse performance. - _ownProperties_: by default Ajv iterates over all enumerable object properties; when this option is `true` only own enumerable object properties (i.e. found directly on the object rather than on its prototype) are iterated. Contributed by @mbroadst. - _multipleOfPrecision_: by default `multipleOf` keyword is validated by comparing the result of division with parseInt() of that result. It works for dividers that are bigger than 1. For small dividers such as 0.01 the result of the division is usually not integer (even when it should be integer, see issue [#84](https://github.com/ajv-validator/ajv/issues/84)). If you need to use fractional dividers set this option to some positive integer N to have `multipleOf` validated using this formula: `Math.abs(Math.round(division) - division) < 1e-N` (it is slower but allows for float arithmetics deviations). - _errorDataPath_ (deprecated): set `dataPath` to point to 'object' (default) or to 'property' when validating keywords `required`, `additionalProperties` and `dependencies`. - _messages_: Include human-readable messages in errors. `true` by default. `false` can be passed when custom messages are used (e.g. with [ajv-i18n](https://github.com/ajv-validator/ajv-i18n)). - _sourceCode_: add `sourceCode` property to validating function (for debugging; this code can be different from the result of toString call). - _processCode_: an optional function to process generated code before it is passed to Function constructor. It can be used to either beautify (the validating function is generated without line-breaks) or to transpile code. Starting from version 5.0.0 this option replaced options: - `beautify` that formatted the generated function using [js-beautify](https://github.com/beautify-web/js-beautify). If you want to beautify the generated code pass a function calling `require('js-beautify').js_beautify` as `processCode: code => js_beautify(code)`. - `transpile` that transpiled asynchronous validation function. You can still use `transpile` option with [ajv-async](https://github.com/ajv-validator/ajv-async) package. See [Asynchronous validation](#asynchronous-validation) for more information. - _cache_: an optional instance of cache to store compiled schemas using stable-stringified schema as a key. For example, set-associative cache [sacjs](https://github.com/epoberezkin/sacjs) can be used. If not passed then a simple hash is used which is good enough for the common use case (a limited number of statically defined schemas). Cache should have methods `put(key, value)`, `get(key)`, `del(key)` and `clear()`. - _serialize_: an optional function to serialize schema to cache key. Pass `false` to use schema itself as a key (e.g., if WeakMap used as a cache). By default [fast-json-stable-stringify](https://github.com/epoberezkin/fast-json-stable-stringify) is used. ## Validation errors In case of validation failure, Ajv assigns the array of errors to `errors` property of validation function (or to `errors` property of Ajv instance when `validate` or `validateSchema` methods were called). In case of [asynchronous validation](#asynchronous-validation), the returned promise is rejected with exception `Ajv.ValidationError` that has `errors` property. ### Error objects Each error is an object with the following properties: - _keyword_: validation keyword. - _dataPath_: the path to the part of the data that was validated. By default `dataPath` uses JavaScript property access notation (e.g., `".prop[1].subProp"`). When the option `jsonPointers` is true (see [Options](#options)) `dataPath` will be set using JSON pointer standard (e.g., `"/prop/1/subProp"`). - _schemaPath_: the path (JSON-pointer as a URI fragment) to the schema of the keyword that failed validation. - _params_: the object with the additional information about error that can be used to create custom error messages (e.g., using [ajv-i18n](https://github.com/ajv-validator/ajv-i18n) package). See below for parameters set by all keywords. - _message_: the standard error message (can be excluded with option `messages` set to false). - _schema_: the schema of the keyword (added with `verbose` option). - _parentSchema_: the schema containing the keyword (added with `verbose` option) - _data_: the data validated by the keyword (added with `verbose` option). __Please note__: `propertyNames` keyword schema validation errors have an additional property `propertyName`, `dataPath` points to the object. After schema validation for each property name, if it is invalid an additional error is added with the property `keyword` equal to `"propertyNames"`. ### Error parameters Properties of `params` object in errors depend on the keyword that failed validation. - `maxItems`, `minItems`, `maxLength`, `minLength`, `maxProperties`, `minProperties` - property `limit` (number, the schema of the keyword). - `additionalItems` - property `limit` (the maximum number of allowed items in case when `items` keyword is an array of schemas and `additionalItems` is false). - `additionalProperties` - property `additionalProperty` (the property not used in `properties` and `patternProperties` keywords). - `dependencies` - properties: - `property` (dependent property), - `missingProperty` (required missing dependency - only the first one is reported currently) - `deps` (required dependencies, comma separated list as a string), - `depsCount` (the number of required dependencies). - `format` - property `format` (the schema of the keyword). - `maximum`, `minimum` - properties: - `limit` (number, the schema of the keyword), - `exclusive` (boolean, the schema of `exclusiveMaximum` or `exclusiveMinimum`), - `comparison` (string, comparison operation to compare the data to the limit, with the data on the left and the limit on the right; can be "<", "<=", ">", ">=") - `multipleOf` - property `multipleOf` (the schema of the keyword) - `pattern` - property `pattern` (the schema of the keyword) - `required` - property `missingProperty` (required property that is missing). - `propertyNames` - property `propertyName` (an invalid property name). - `patternRequired` (in ajv-keywords) - property `missingPattern` (required pattern that did not match any property). - `type` - property `type` (required type(s), a string, can be a comma-separated list) - `uniqueItems` - properties `i` and `j` (indices of duplicate items). - `const` - property `allowedValue` pointing to the value (the schema of the keyword). - `enum` - property `allowedValues` pointing to the array of values (the schema of the keyword). - `$ref` - property `ref` with the referenced schema URI. - `oneOf` - property `passingSchemas` (array of indices of passing schemas, null if no schema passes). - custom keywords (in case keyword definition doesn't create errors) - property `keyword` (the keyword name). ### Error logging Using the `logger` option when initiallizing Ajv will allow you to define custom logging. Here you can build upon the exisiting logging. The use of other logging packages is supported as long as the package or its associated wrapper exposes the required methods. If any of the required methods are missing an exception will be thrown. - **Required Methods**: `log`, `warn`, `error` ```javascript var otherLogger = new OtherLogger(); var ajv = new Ajv({ logger: { log: console.log.bind(console), warn: function warn() { otherLogger.logWarn.apply(otherLogger, arguments); }, error: function error() { otherLogger.logError.apply(otherLogger, arguments); console.error.apply(console, arguments); } } }); ``` ## Plugins Ajv can be extended with plugins that add custom keywords, formats or functions to process generated code. When such plugin is published as npm package it is recommended that it follows these conventions: - it exports a function - this function accepts ajv instance as the first parameter and returns the same instance to allow chaining - this function can accept an optional configuration as the second parameter If you have published a useful plugin please submit a PR to add it to the next section. ## Related packages - [ajv-async](https://github.com/ajv-validator/ajv-async) - plugin to configure async validation mode - [ajv-bsontype](https://github.com/BoLaMN/ajv-bsontype) - plugin to validate mongodb's bsonType formats - [ajv-cli](https://github.com/jessedc/ajv-cli) - command line interface - [ajv-errors](https://github.com/ajv-validator/ajv-errors) - plugin for custom error messages - [ajv-i18n](https://github.com/ajv-validator/ajv-i18n) - internationalised error messages - [ajv-istanbul](https://github.com/ajv-validator/ajv-istanbul) - plugin to instrument generated validation code to measure test coverage of your schemas - [ajv-keywords](https://github.com/ajv-validator/ajv-keywords) - plugin with custom validation keywords (select, typeof, etc.) - [ajv-merge-patch](https://github.com/ajv-validator/ajv-merge-patch) - plugin with keywords $merge and $patch - [ajv-pack](https://github.com/ajv-validator/ajv-pack) - produces a compact module exporting validation functions - [ajv-formats-draft2019](https://github.com/luzlab/ajv-formats-draft2019) - format validators for draft2019 that aren't already included in ajv (ie. `idn-hostname`, `idn-email`, `iri`, `iri-reference` and `duration`). ## Some packages using Ajv - [webpack](https://github.com/webpack/webpack) - a module bundler. Its main purpose is to bundle JavaScript files for usage in a browser - [jsonscript-js](https://github.com/JSONScript/jsonscript-js) - the interpreter for [JSONScript](http://www.jsonscript.org) - scripted processing of existing endpoints and services - [osprey-method-handler](https://github.com/mulesoft-labs/osprey-method-handler) - Express middleware for validating requests and responses based on a RAML method object, used in [osprey](https://github.com/mulesoft/osprey) - validating API proxy generated from a RAML definition - [har-validator](https://github.com/ahmadnassri/har-validator) - HTTP Archive (HAR) validator - [jsoneditor](https://github.com/josdejong/jsoneditor) - a web-based tool to view, edit, format, and validate JSON http://jsoneditoronline.org - [JSON Schema Lint](https://github.com/nickcmaynard/jsonschemalint) - a web tool to validate JSON/YAML document against a single JSON Schema http://jsonschemalint.com - [objection](https://github.com/vincit/objection.js) - SQL-friendly ORM for Node.js - [table](https://github.com/gajus/table) - formats data into a string table - [ripple-lib](https://github.com/ripple/ripple-lib) - a JavaScript API for interacting with [Ripple](https://ripple.com) in Node.js and the browser - [restbase](https://github.com/wikimedia/restbase) - distributed storage with REST API & dispatcher for backend services built to provide a low-latency & high-throughput API for Wikipedia / Wikimedia content - [hippie-swagger](https://github.com/CacheControl/hippie-swagger) - [Hippie](https://github.com/vesln/hippie) wrapper that provides end to end API testing with swagger validation - [react-form-controlled](https://github.com/seeden/react-form-controlled) - React controlled form components with validation - [rabbitmq-schema](https://github.com/tjmehta/rabbitmq-schema) - a schema definition module for RabbitMQ graphs and messages - [@query/schema](https://www.npmjs.com/package/@query/schema) - stream filtering with a URI-safe query syntax parsing to JSON Schema - [chai-ajv-json-schema](https://github.com/peon374/chai-ajv-json-schema) - chai plugin to us JSON Schema with expect in mocha tests - [grunt-jsonschema-ajv](https://github.com/SignpostMarv/grunt-jsonschema-ajv) - Grunt plugin for validating files against JSON Schema - [extract-text-webpack-plugin](https://github.com/webpack-contrib/extract-text-webpack-plugin) - extract text from bundle into a file - [electron-builder](https://github.com/electron-userland/electron-builder) - a solution to package and build a ready for distribution Electron app - [addons-linter](https://github.com/mozilla/addons-linter) - Mozilla Add-ons Linter - [gh-pages-generator](https://github.com/epoberezkin/gh-pages-generator) - multi-page site generator converting markdown files to GitHub pages - [ESLint](https://github.com/eslint/eslint) - the pluggable linting utility for JavaScript and JSX ## Tests ``` npm install git submodule update --init npm test ``` ## Contributing All validation functions are generated using doT templates in [dot](https://github.com/ajv-validator/ajv/tree/master/lib/dot) folder. Templates are precompiled so doT is not a run-time dependency. `npm run build` - compiles templates to [dotjs](https://github.com/ajv-validator/ajv/tree/master/lib/dotjs) folder. `npm run watch` - automatically compiles templates when files in dot folder change Please see [Contributing guidelines](https://github.com/ajv-validator/ajv/blob/master/CONTRIBUTING.md) ## Changes history See https://github.com/ajv-validator/ajv/releases __Please note__: [Changes in version 7.0.0-beta](https://github.com/ajv-validator/ajv/releases/tag/v7.0.0-beta.0) [Version 6.0.0](https://github.com/ajv-validator/ajv/releases/tag/v6.0.0). ## Code of conduct Please review and follow the [Code of conduct](https://github.com/ajv-validator/ajv/blob/master/CODE_OF_CONDUCT.md). Please report any unacceptable behaviour to ajv.validator@gmail.com - it will be reviewed by the project team. ## Open-source software support Ajv is a part of [Tidelift subscription](https://tidelift.com/subscription/pkg/npm-ajv?utm_source=npm-ajv&utm_medium=referral&utm_campaign=readme) - it provides a centralised support to open-source software users, in addition to the support provided by software maintainers. ## License [MIT](https://github.com/ajv-validator/ajv/blob/master/LICENSE) [](https://www.npmjs.com/package/esprima) [](https://www.npmjs.com/package/esprima) [](https://travis-ci.org/jquery/esprima) [](https://codecov.io/github/jquery/esprima) **Esprima** ([esprima.org](http://esprima.org), BSD license) is a high performance, standard-compliant [ECMAScript](http://www.ecma-international.org/publications/standards/Ecma-262.htm) parser written in ECMAScript (also popularly known as [JavaScript](https://en.wikipedia.org/wiki/JavaScript)). Esprima is created and maintained by [Ariya Hidayat](https://twitter.com/ariyahidayat), with the help of [many contributors](https://github.com/jquery/esprima/contributors). ### Features - Full support for ECMAScript 2017 ([ECMA-262 8th Edition](http://www.ecma-international.org/publications/standards/Ecma-262.htm)) - Sensible [syntax tree format](https://github.com/estree/estree/blob/master/es5.md) as standardized by [ESTree project](https://github.com/estree/estree) - Experimental support for [JSX](https://facebook.github.io/jsx/), a syntax extension for [React](https://facebook.github.io/react/) - Optional tracking of syntax node location (index-based and line-column) - [Heavily tested](http://esprima.org/test/ci.html) (~1500 [unit tests](https://github.com/jquery/esprima/tree/master/test/fixtures) with [full code coverage](https://codecov.io/github/jquery/esprima)) ### API Esprima can be used to perform [lexical analysis](https://en.wikipedia.org/wiki/Lexical_analysis) (tokenization) or [syntactic analysis](https://en.wikipedia.org/wiki/Parsing) (parsing) of a JavaScript program. A simple example on Node.js REPL: ```javascript > var esprima = require('esprima'); > var program = 'const answer = 42'; > esprima.tokenize(program); [ { type: 'Keyword', value: 'const' }, { type: 'Identifier', value: 'answer' }, { type: 'Punctuator', value: '=' }, { type: 'Numeric', value: '42' } ] > esprima.parseScript(program); { type: 'Program', body: [ { type: 'VariableDeclaration', declarations: [Object], kind: 'const' } ], sourceType: 'script' } ``` For more information, please read the [complete documentation](http://esprima.org/doc). # NEAR CLI (command line interface) [](https://gitpod.io/#https://github.com/near/near-cli) NEAR CLI is a Node.js application that relies on [`near-api-js`](https://github.com/near/near-api-js) to connect to and interact with the NEAR blockchain. Create accounts, access keys, sign & send transactions with this versatile command line interface tool. **Note:** Node.js version 10+ is required to run NEAR CLI. ## Release notes **Release notes and unreleased changes can be found in the [CHANGELOG](CHANGELOG.md)** ## Overview _Click on a command for more information and examples._ | Command | Description | | ----------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------- | | **ACCESS KEYS** | | | [`near login`](#near-login) | stores a full access key locally using [NEAR Wallet](https://wallet.testnet.near.org/) | | [`near keys`](#near-keys) | displays all access keys and their details for a given account | | [`near generate-key`](#near-generate-key) | generates a local key pair **or** shows public key & [implicit account](http://docs.near.org/docs/roles/integrator/implicit-accounts) | | [`near add-key`](#near-add-key) | adds a new access key to an account | | [`near delete-key`](#near-delete-key) | deletes an access key from an account | | **ACCOUNTS** | | | [`near create-account`](#near-create-account) | creates an account | | [`near state`](#near-state) | shows general details of an account | | [`near keys`](#near-keys) | displays all access keys for a given account | | [`near send`](#near-send) | sends tokens from one account to another | | [`near delete`](#near-delete) | deletes an account and transfers remaining balance to a beneficiary account | | **CONTRACTS** | | | [`near deploy`](#near-deploy) | deploys a smart contract to the NEAR blockchain | | [`near dev-deploy`](#near-dev-deploy) | creates a development account and deploys a contract to it _(`testnet` only)_ | | [`near call`](#near-call) | makes a contract call which can invoke `change` _or_ `view` methods | | [`near view`](#near-view) | makes a contract call which can **only** invoke a `view` method | | **TRANSACTIONS** | | | [`near tx-status`](#near-tx-status) | queries a transaction's status by `txHash` | | **VALIDATORS** | | | [`near validators current`](#near-validators-current) | displays current [epoch](http://docs.near.org/docs/concepts/epoch) validator pool details | | [`near validators next`](#near-validators-next) | displays validator details for the next [epoch](http://docs.near.org/docs/concepts/epoch) | | [`near proposals`](#near-proposals) | displays validator proposals for the [epoch](http://docs.near.org/docs/concepts/epoch) _after_ next | | **JS-SDK** | | | [`near js`](#near-js) | Work with JS contract enclave | | **REPL** | | | [`near repl`](#near-repl) | launches an interactive connection to the NEAR blockchain ([REPL](https://en.wikipedia.org/wiki/Read%E2%80%93eval%E2%80%93print_loop)) | | | can also run a JS/TS file which exports an async main function that takes a [context](./context/index.d.ts) object | [ [**OPTIONS**](#options) ] > For EVM support see [Project Aurora's](https://aurora.dev) [`aurora-cli`](https://github.com/aurora-is-near/aurora-cli). --- ## Setup ### Installation > Make sure you have a current version of `npm` and `NodeJS` installed. #### Mac and Linux 1. Install `npm` and `node` using a package manager like `nvm` as sometimes there are issues using Ledger due to how OS X handles node packages related to USB devices. [[click here]](https://nodejs.org/en/download/package-manager/) 2. Ensure you have installed Node version 12 or above. 3. Install `near-cli` globally by running: ```bash npm install -g near-cli ``` #### Windows > For Windows users, we recommend using Windows Subsystem for Linux (`WSL`). 1. Install `WSL` [[click here]](https://docs.microsoft.com/en-us/windows/wsl/install-manual#downloading-distros) 2. Install `npm` [[click here]](https://www.npmjs.com/get-npm) 3. Install ` Node.js` [ [ click here ]](https://nodejs.org/en/download/package-manager/) 4. Change `npm` default directory [ [ click here ] ](https://docs.npmjs.com/resolving-eacces-permissions-errors-when-installing-packages-globally#manually-change-npms-default-directory) - This is to avoid any permission issues with `WSL` 5. Open `WSL` and install `near-cli` globally by running: ```bash npm install -g near-cli ``` --- ### Network selection > The default network for `near-cli` is `testnet`. - You can change the network by prepending an environment variable to your command. ```bash NEAR_ENV=betanet near send ... ``` - Alternatively, you can set up a global environment variable by running: ```bash export NEAR_ENV=mainnet ``` --- ### Custom RPC server selection You can set custom RPC server URL by setting this env variables: ```bash NEAR_CLI_MAINNET_RPC_SERVER_URL NEAR_CLI_TESTNET_RPC_SERVER_URL NEAR_CLI_BETANET_RPC_SERVER_URL NEAR_CLI_GUILDNET_RPC_SERVER_URL NEAR_CLI_LOCALNET_RPC_SERVER_URL NEAR_CLI_SHARDNET_RPC_SERVER_URL NEAR_CLI_CI_RPC_SERVER_URL ``` Clear them in case you want to get back to the default RPC server. Example: ```bash export NEAR_CLI_TESTNET_RPC_SERVER_URL=<put_your_rpc_server_url_here> ``` --- ### RPC server API Keys Some RPC servers may require that you provide a valid API key to use them. You can set `x-api-key` for a server by running the next command: ```bash near set-api-key <rpc-server-url> <api-key> ``` This API Key will be saved in a config and used for each command you execute with this RPC URL. --- ## Access Keys ### `near login` > locally stores a full access key of an account you created with [NEAR Wallet](https://wallet.testnet.near.org/). - arguments: `none` - options: `default` **Example:** ```bash near login ``` #### Access Key Location: - Once complete you will now have your Access Key stored locally in a hidden directory called `.near-credentials` - This directory is located at the root of your `HOME` directory: - `~/.near-credentials` _(MAC / Linux)_ - `C:\Users\YOUR_ACCOUNT\.near-credentials` _(Windows)_ - Inside `.near-credentials`, access keys are organized in network subdirectories: - `default` _for `testnet`_ - `betanet` - `mainnet` - These network subdirectories contain `.JSON` objects with an: - `account_id` - `private_key` - `public_key` **Example:** ```json { "account_id": "example-acct.testnet", "public_key": "ed25519:7ns2AZVaG8XZrFrgRw7g8qhgddNTN64Zkz7Eo8JBnV5g", "private_key": "ed25519:4Ijd3vNUmdWJ4L922BxcsGN1aDrdpvUHEgqLQAUSLmL7S2qE9tYR9fqL6DqabGGDxCSHkKwdaAGNcHJ2Sfd" } ``` --- ### `near keys` > Displays all access keys for a given account. - arguments: `accountId` - options: `default` **Example:** ```bash near keys client.chainlink.testnet ``` <details> <summary> <strong>Example Response</strong> </summary> <p> ``` Keys for account client.chainlink.testnet [ { public_key: 'ed25519:4wrVrZbHrurMYgkcyusfvSJGLburmaw7m3gmCApxgvY4', access_key: { nonce: 97, permission: 'FullAccess' } }, { public_key: 'ed25519:H9k5eiU4xXS3M4z8HzKJSLaZdqGdGwBG49o7orNC4eZW', access_key: { nonce: 88, permission: { FunctionCall: { allowance: '18483247987345065500000000', receiver_id: 'client.chainlink.testnet', method_names: [ 'get_token_price', [length]: 1 ] } } } }, [length]: 2 ] ``` </p> </details> --- ### `near generate-key` > Creates a key pair locally in `.near-credentials` **or** displays public key from Ledger or seed phrase. - arguments: `accountId` or `none` - options: `--useLedgerKey`, `--seedPhrase`, or `--seedPath` **Note:** There are several ways to use `generate-key` that return very different results. Please reference the examples below for further details. --- #### 1) `near generate-key` > Creates a key pair locally in `.near-credentials` with an [implicit account](http://docs.near.org/docs/roles/integrator/implicit-accounts) as the accountId. _(hash representation of the public key)_ ```bash near generate-key ``` <details> <summary><strong>Example Response</strong></summary> <p> ```bash Key pair with ed25519:33Vn9VtNEtWQPPd1f4jf5HzJ5weLcvGHU8oz7o5UnPqy public key for an account "1e5b1346bdb4fc5ccd465f6757a9082a84bcacfd396e7d80b0c726252fe8b3e8" ``` </p> </details> --- #### 2) `near generate-key accountId` > Creates a key pair locally in `.near-credentials` with an `accountId` that you specify. **Note:** This does NOT create an account with this name, and will overwrite an existing `.json` file with the same name. ```bash near generate-key example.testnet ``` <details> <summary><strong>Example Response</strong></summary> <p> ```bash Key pair with ed25519:CcH3oMEFg8tpJLekyvF7Wp49G81K3QLhGbaWEFwtCjht public key for an account "example.testnet" ``` </p> </details> --- #### 3a) `near generate-key --useLedgerKey` > Uses a connected Ledger device to display a public key and [implicit account](http://docs.near.org/docs/roles/integrator/implicit-accounts) using the default HD path (`"44'/397'/0'/0'/1'"`) ```bash near generate-key --useLedgerKey ``` You should then see the following prompt to confirm this request on your Ledger device: Make sure to connect your Ledger and open NEAR app Waiting for confirmation on Ledger... After confirming the request on your Ledger device, a public key and implicit accountId will be displayed. <details> <summary><strong>Example Response</strong></summary> <p> ```bash Using public key: ed25519:B22RP10g695wyeRvKIWv61NjmQZEkWTMzAYgdfx6oSeB2 Implicit account: 42c320xc20739fd9a6bqf2f89z61rd14efe5d3de234199bc771235a4bb8b0e1 ``` </p> </details> --- #### 3b) `near generate-key --useLedgerKey="HD path you specify"` > Uses a connected Ledger device to display a public key and [implicit account](http://docs.near.org/docs/roles/integrator/implicit-accounts) using a custom HD path. ```bash near generate-key --useLedgerKey="44'/397'/0'/0'/2'" ``` You should then see the following prompt to confirm this request on your Ledger device: Make sure to connect your Ledger and open NEAR app Waiting for confirmation on Ledger... After confirming the request on your Ledger device, a public key and implicit accountId will be displayed. <details> <summary><strong>Example Response</strong></summary> <p> ```bash Using public key: ed25519:B22RP10g695wye3dfa32rDjmQZEkWTMzAYgCX6oSeB2 Implicit account: 42c320xc20739ASD9a6bqf2Dsaf289z61rd14efe5d3de23213789009afDsd5bb8b0e1 ``` </p> </details> --- #### 4a) `near generate-key --seedPhrase="your seed phrase"` > Uses a seed phrase to display a public key and [implicit account](http://docs.near.org/docs/roles/integrator/implicit-accounts) ```bash near generate-key --seedPhrase="cow moon right send now cool dense quark pretty see light after" ``` <details> <summary><strong>Example Response</strong></summary> <p> Key pair with ed25519:GkMNfc92fwM1AmwH1MTjF4b7UZuceamsq96XPkHsQ9vi public key for an account "e9fa50ac20522987a87e566fcd6febdc97bd35c8c489999ca8aff465c56969c3" </p> </details> --- #### 4b) `near generate-key accountId --seedPhrase="your seed phrase"` > Uses a seed phrase to display a public key **without** the [implicit account](http://docs.near.org/docs/roles/integrator/implicit-accounts). ```bash near generate-key example.testnet --seedPhrase="cow moon right send now cool dense quark pretty see light after" ``` <details> <summary><strong>Example Response</strong></summary> <p> Key pair with ed25519:GkMNfc92fwM1AmwH1MTjF4b7UZuceamsq96XPkHsQ9vi public key for an account "example.testnet" </p> </details> --- ### `near add-key` > Adds an either a **full access** or **function access** key to a given account. **Note:** You will use an _existing_ full access key for the account you would like to add a _new_ key to. ([`near login`](http://docs.near.org/docs/tools/near-cli#near-login)) #### 1) add a `full access` key - arguments: `accountId` `publicKey` **Example:** ```bash near add-key example-acct.testnet Cxg2wgFYrdLTEkMu6j5D6aEZqTb3kXbmJygS48ZKbo1S ``` <details> <summary><strong>Example Response</strong></summary> <p> Adding full access key = Cxg2wgFYrdLTEkMu6j5D6aEZqTb3kXbmJygS48ZKbo1S to example-acct.testnet. Transaction Id EwU1ooEvkR42HvGoJHu5ou3xLYT3JcgQwFV3fAwevGJg To see the transaction in the transaction explorer, please open this url in your browser https://explorer.testnet.near.org/transactions/EwU1ooEvkR42HvGoJHu5ou3xLYT3JcgQwFV3fAwevGJg </p> </details> #### 2) add a `function access` key - arguments: `accountId` `publicKey` `--contract-id` - options: `--method-names` `--allowance` > `accountId` is the account you are adding the key to > > `--contract-id` is the contract you are allowing methods to be called on > > `--method-names` are optional and if omitted, all methods of the `--contract-id` can be called. > > `--allowance` is the amount of Ⓝ the key is allowed to spend on gas fees _only_. If omitted then key will only be able to call view methods. **Note:** Each transaction made with this key will have gas fees deducted from the initial allowance and once it runs out a new key must be issued. **Example:** ```bash near add-key example-acct.testnet GkMNfc92fwM1AmwH1MTjF4b7UZuceamsq96XPkHsQ9vi --contract-id example-contract.testnet --method-names example_method --allowance 30000000000 ``` <details> <summary><strong>Example Response</strong></summary> <p> Adding function call access key = GkMNfc92fwM1AmwH1MTjF4b7UZuceamsq96XPkHsQ9vi to example-acct.testnet. Transaction Id H2BQL9fXVmdTbwkXcMFfZ7qhZqC8fFhsA8KDHFdT9q2r To see the transaction in the transaction explorer, please open this url in your browser https://explorer.testnet.near.org/transactions/H2BQL9fXVmdTbwkXcMFfZ7qhZqC8fFhsA8KDHFdT9q2r </p> </details> --- ### `near delete-key` > Deletes an existing key for a given account. - arguments: `accountId` `publicKey` - options: `default` **Note:** You will need separate full access key for the account you would like to delete a key from. ([`near login`](http://docs.near.org/docs/tools/near-cli#near-login)) **Example:** ```bash near delete-key example-acct.testnet Cxg2wgFYrdLTEkMu6j5D6aEZqTb3kXbmJygS48ZKbo1S ``` <details> <summary><strong>Example Response</strong></summary> <p> Transaction Id 4PwW7vjzTCno7W433nu4ieA6FvsAjp7zNFwicNLKjQFT To see the transaction in the transaction explorer, please open this url in your browser https://explorer.testnet.near.org/transactions/4PwW7vjzTCno7W433nu4ieA6FvsAjp7zNFwicNLKjQFT </p> </details> --- ## Accounts ### `near create-account` > Creates an account using a `--masterAccount` that will pay for the account's creation and any initial balance. - arguments: `accountId` `--masterAccount` - options: `--initialBalance` **Note:** You will only be able to create subaccounts of the `--masterAccount` unless the name of the new account is ≥ 32 characters. **Example**: ```bash near create-account 12345678901234567890123456789012 --masterAccount example-acct.testnet ``` **Subaccount example:** ```bash near create-account sub-acct.example-acct.testnet --masterAccount example-acct.testnet ``` **Example using `--initialBalance`:** ```bash near create-account sub-acct2.example-acct.testnet --masterAccount example-acct.testnet --initialBalance 10 ``` <details> <summary><strong>Example Response</strong></summary> <p> Saving key to '/HOME_DIR/.near-credentials/default/sub-acct2.example-acct.testnet.json' Account sub-acct2.example-acct.testnet for network "default" was created. </p> </details> --- ### `near state` > Shows details of an account's state. - arguments: `accountId` - options: `default` **Example:** ```bash near state example.testnet ``` <details> <summary><strong>Example Response</strong></summary> <p> ```json { "amount": "99999999303364037168535000", "locked": "0", "code_hash": "G1PCjeQbvbUsJ8piXNb7Yg6dn3mfivDQN7QkvsVuMt4e", "storage_usage": 53528, "storage_paid_at": 0, "block_height": 21577354, "block_hash": "AWu1mrT3eMJLjqyhNHvMKrrbahN6DqcNxXanB5UH1RjB", "formattedAmount": "99.999999303364037168535" } ``` </p> </details> --- ### `near send` > Sends NEAR tokens (Ⓝ) from one account to another. - arguments: `senderId` `receiverId` `amount` - options: `default` **Note:** You will need a full access key for the sending account. ([`near login`](http://docs.near.org/docs/tools/near-cli#near-login)) **Example:** ```bash near send sender.testnet receiver.testnet 10 ``` <details> <summary><strong>Example Response</strong></summary> <p> Sending 10 NEAR to receiver.testnet from sender.testnet Transaction Id BYTr6WNyaEy2ykAiQB9P5VvTyrJcFk6Yw95HPhXC6KfN To see the transaction in the transaction explorer, please open this url in your browser https://explorer.testnet.near.org/transactions/BYTr6WNyaEy2ykAiQB9P5VvTyrJcFk6Yw95HPhXC6KfN </p> </details> --- ### `near delete` > Deletes an account and transfers remaining balance to a beneficiary account. - arguments: `accountId` `beneficiaryId` - options: `default` **Example:** ```bash near delete sub-acct2.example-acct.testnet example-acct.testnet ``` <details> <summary><strong>Example Response</strong></summary> <p> Deleting account. Account id: sub-acct2.example-acct.testnet, node: https://rpc.testnet.near.org, helper: https://helper.testnet.near.org, beneficiary: example-acct.testnet Transaction Id 4x8xohER1E3yxeYdXPfG8GvXin1ShiaroqE5GdCd5YxX To see the transaction in the transaction explorer, please open this url in your browser https://explorer.testnet.near.org/transactions/4x8xohER1E3yxeYdXPfG8GvXin1ShiaroqE5GdCd5YxX Account sub-acct2.example-acct.testnet for network "default" was deleted. </p> </details> --- ## Contracts ### `near deploy` > Deploys a smart contract to a given accountId. - arguments: `accountId` `.wasmFile` - options: `initFunction` `initArgs` `initGas` `initDeposit` **Note:** You will need a full access key for the account you are deploying the contract to. ([`near login`](http://docs.near.org/docs/tools/near-cli#near-login)) **Example:** ```bash near deploy --accountId example-contract.testnet --wasmFile out/example.wasm ``` **Initialize Example:** ```bash near deploy --accountId example-contract.testnet --wasmFile out/example.wasm --initFunction new --initArgs '{"owner_id": "example-contract.testnet", "total_supply": "10000000"}' ``` <details> <summary><strong>Example Response</strong></summary> <p> Starting deployment. Account id: example-contract.testnet, node: https://rpc.testnet.near.org, helper: https://helper.testnet.near.org, file: main.wasm Transaction Id G8GhhPuujMHTRnwursPXE1Lv5iUZ8WUecwiST1PcKWMt To see the transaction in the transaction explorer, please open this url in your browser https://explorer.testnet.near.org/transactions/G8GhhPuujMHTRnwursPXE1Lv5iUZ8WUecwiST1PcKWMt Done deploying to example-contract.testnet </p> </details> ### `near dev-deploy` > Creates a development account and deploys a smart contract to it. No access keys needed. **_(`testnet` only)_** - options: `wasmFile`, `initFunction`, `initArgs`, `initGas`, `initDeposit`, `initialBalance`, `force` **Example:** ```bash near dev-deploy --wasmFile out/example.wasm ``` **Initialize Example:** ```bash near dev-deploy --wasmFile out/example.wasm --initFunction new --initArgs '{"owner_id": "example-contract.testnet", "total_supply": "10000000"}' ``` <details> <summary><strong>Example Response</strong></summary> <p> Starting deployment. Account id: dev-1603749005325-6432576, node: https://rpc.testnet.near.org, helper: https://helper.testnet.near.org, file: out/main.wasm Transaction Id 5nixQT87KeN3eZFX7zwBLUAKSY4nyjhwzLF27SWWKkAp To see the transaction in the transaction explorer, please open this url in your browser https://explorer.testnet.near.org/transactions/5nixQT87KeN3eZFX7zwBLUAKSY4nyjhwzLF27SWWKkAp Done deploying to dev-1603749005325-6432576 </p> </details> --- ### `near call` > makes a contract call which can modify _or_ view state. **Note:** Contract calls require a transaction fee (gas) so you will need an access key for the `--accountId` that will be charged. ([`near login`](http://docs.near.org/docs/tools/near-cli#near-login)) - arguments: `contractName` `method_name` `{ args }` `--accountId` - options: `--gas` `--deposit` **Example:** ```bash near call guest-book.testnet addMessage '{"text": "Aloha"}' --account-id example-acct.testnet ``` <details> <summary><strong>Example Response</strong></summary> <p> Scheduling a call: guest-book.testnet.addMessage({"text": "Aloha"}) Transaction Id FY8hBam2iyQfdHkdR1dp6w5XEPJzJSosX1wUeVPyUvVK To see the transaction in the transaction explorer, please open this url in your browser https://explorer.testnet.near.org/transactions/FY8hBam2iyQfdHkdR1dp6w5XEPJzJSosX1wUeVPyUvVK '' </p> </details> --- ### `near view` > Makes a contract call which can **only** view state. _(Call is free of charge)_ - arguments: `contractName` `method_name` `{ args }` - options: `default` **Example:** ```bash near view guest-book.testnet getMessages '{}' ``` <details> <summary><strong>Example Response</strong></summary> <p> View call: guest-book.testnet.getMessages({}) [ { premium: false, sender: 'waverlymaven.testnet', text: 'TGIF' }, { premium: true, sender: 'waverlymaven.testnet', text: 'Hello from New York 🌈' }, { premium: false, sender: 'fhr.testnet', text: 'Hi' }, { premium: true, sender: 'eugenethedream', text: 'test' }, { premium: false, sender: 'dongri.testnet', text: 'test' }, { premium: false, sender: 'dongri.testnet', text: 'hello' }, { premium: true, sender: 'dongri.testnet', text: 'hey' }, { premium: false, sender: 'hirokihori.testnet', text: 'hello' }, { premium: true, sender: 'eugenethedream', text: 'hello' }, { premium: false, sender: 'example-acct.testnet', text: 'Aloha' }, [length]: 10 ] </p> </details> --- ## NEAR EVM Contracts ### `near evm-view` > Makes an EVM contract call which can **only** view state. _(Call is free of charge)_ - arguments: `evmAccount` `contractName` `methodName` `[arguments]` `--abi` `--accountId` - options: `default` **Example:** ```bash near evm-view evm 0x89dfB1Cd61F05ad3971EC1f83056Fd9793c2D521 getAdopters '[]' --abi /path/to/contract/abi/Adoption.json --accountId test.near ``` <details> <summary><strong>Example Response</strong></summary> <p> ```json [ "0x0000000000000000000000000000000000000000", "0x0000000000000000000000000000000000000000", "0x0000000000000000000000000000000000000000", "0x0000000000000000000000000000000000000000", "0x0000000000000000000000000000000000000000", "0x0000000000000000000000000000000000000000", "0xCBdA96B3F2B8eb962f97AE50C3852CA976740e2B", "0x0000000000000000000000000000000000000000", "0x0000000000000000000000000000000000000000", "0x0000000000000000000000000000000000000000", "0x0000000000000000000000000000000000000000", "0x0000000000000000000000000000000000000000", "0x0000000000000000000000000000000000000000", "0x0000000000000000000000000000000000000000", "0x0000000000000000000000000000000000000000", "0x0000000000000000000000000000000000000000" ] ``` </p> </details> --- ### `near evm-call (deprecated)` > makes an EVM contract call which can modify _or_ view state. **Note:** Contract calls require a transaction fee (gas) so you will need an access key for the `--accountId` that will be charged. ([`near login`](http://docs.near.org/docs/tools/near-cli#near-login)) - arguments: `evmAccount` `contractName` `methodName` `[arguments]` `--abi` `--accountId` - options: `default` (`--gas` and `--deposit` coming soon…) **Example:** ```bash near evm-call evm 0x89dfB1Cd61F05ad3971EC1f83056Fd9793c2D521 adopt '["6"]' --abi /path/to/contract/abi/Adoption.json --accountId test.near ``` <details> <summary><strong>Example Response</strong></summary> <p> Scheduling a call inside evm EVM: 0x89dfB1Cd61F05ad3971EC1f83056Fd9793c2D521.adopt() with args [ '6' ] </p> </details> --- ### `near evm-dev-init` > Used for running EVM tests — creates a given number of test accounts on the desired network using a master NEAR account - arguments: `accountId` - options: `numAccounts` ```bash NEAR_ENV=betanet near evm-dev-init you.betanet 3 ``` The above will create 3 subaccounts of `you.betanet`. This is useful for tests that require multiple accounts, for instance, sending fungible tokens back and forth. If the `3` value were to be omitted, it would use the default of 5. --- ## Transactions ### `near tx-status` > Queries transaction status by hash and accountId. - arguments: `txHash` `--accountId` - options: `default` **Example:** ```bash near tx-status FY8hBam2iyQfdHkdR1dp6w5XEPJzJSosX1wUeVPyUvVK --accountId guest-book.testnet ``` <details> <summary><strong>Example Response</strong></summary> <p> ```json Transaction guest-book.testnet:FY8hBam2iyQfdHkdR1dp6w5XEPJzJSosX1wUeVPyUvVK { status: { SuccessValue: '' }, transaction: { signer_id: 'example-acct.testnet', public_key: 'ed25519:AXZZKnp6ZcWXyRNdy8FztYrniKf1qt6YZw6mCCReXrDB', nonce: 20, receiver_id: 'guest-book.testnet', actions: [ { FunctionCall: { method_name: 'addMessage', args: 'eyJ0ZXh0IjoiQWxvaGEifQ==', gas: 300000000000000, deposit: '0' } }, [length]: 1 ], signature: 'ed25519:5S6nZXPU72nzgAsTQLmAFfdVSykdKHWhtPMb5U7duacfPdUjrj8ipJxuRiWkZ4yDodvDNt92wcHLJxGLsyNEsZNB', hash: 'FY8hBam2iyQfdHkdR1dp6w5XEPJzJSosX1wUeVPyUvVK' }, transaction_outcome: { proof: [ [length]: 0 ], block_hash: '6nsjvzt6C52SSuJ8UvfaXTsdrUwcx8JtHfnUj8XjdKy1', id: 'FY8hBam2iyQfdHkdR1dp6w5XEPJzJSosX1wUeVPyUvVK', outcome: { logs: [ [length]: 0 ], receipt_ids: [ '7n6wjMgpoBTp22ScLHxeMLzcCvN8Vf5FUuC9PMmCX6yU', [length]: 1 ], gas_burnt: 2427979134284, tokens_burnt: '242797913428400000000', executor_id: 'example-acct.testnet', status: { SuccessReceiptId: '7n6wjMgpoBTp22ScLHxeMLzcCvN8Vf5FUuC9PMmCX6yU' } } }, receipts_outcome: [ { proof: [ [length]: 0 ], block_hash: 'At6QMrBuFQYgEPAh6fuRBmrTAe9hXTY1NzAB5VxTH1J2', id: '7n6wjMgpoBTp22ScLHxeMLzcCvN8Vf5FUuC9PMmCX6yU', outcome: { logs: [ [length]: 0 ], receipt_ids: [ 'FUttfoM2odAhKNQrJ8F4tiBpQJPYu66NzFbxRKii294e', [length]: 1 ], gas_burnt: 3559403233496, tokens_burnt: '355940323349600000000', executor_id: 'guest-book.testnet', status: { SuccessValue: '' } } }, { proof: [ [length]: 0 ], block_hash: 'J7KjpMPzAqE7iX82FAQT3qERDs6UR1EAqBLPJXBzoLCk', id: 'FUttfoM2odAhKNQrJ8F4tiBpQJPYu66NzFbxRKii294e', outcome: { logs: [ [length]: 0 ], receipt_ids: [ [length]: 0 ], gas_burnt: 0, tokens_burnt: '0', executor_id: 'example-acct.testnet', status: { SuccessValue: '' } } }, [length]: 2 ] } ``` </p> </details> --- ## Validators ### `near validators current` > Displays details of current validators. > > - amount staked > - number of seats > - percentage of uptime > - expected block production > - blocks actually produced - arguments: `current` - options: `default` **Example:** ```bash near validators current ``` **Example for `mainnet`:** ```bash NEAR_ENV=mainnet near validators current ``` <details> <summary><strong>Example Response</strong></summary> <p> ```bash Validators (total: 49, seat price: 1,976,588): .--------------------------------------------------------------------------------------------------------------------. | Validator Id | Stake | Seats | % Online | Blocks produced | Blocks expected | |----------------------------------------------|------------|---------|----------|-----------------|-----------------| | cryptium.poolv1.near | 13,945,727 | 7 | 100% | 1143 | 1143 | | astro-stakers.poolv1.near | 11,660,189 | 5 | 100% | 817 | 817 | | blockdaemon.poolv1.near | 11,542,867 | 5 | 76.74% | 627 | 817 | | zavodil.poolv1.near | 11,183,187 | 5 | 100% | 818 | 818 | | bisontrails.poolv1.near | 10,291,696 | 5 | 99.38% | 810 | 815 | | dokiacapital.poolv1.near | 7,906,352 | 3 | 99.54% | 650 | 653 | | chorusone.poolv1.near | 7,480,508 | 3 | 100% | 490 | 490 | | figment.poolv1.near | 6,931,070 | 3 | 100% | 489 | 489 | | stardust.poolv1.near | 6,401,678 | 3 | 100% | 491 | 491 | | anonymous.poolv1.near | 6,291,821 | 3 | 97.55% | 479 | 491 | | d1.poolv1.near | 6,265,109 | 3 | 100% | 491 | 491 | | near8888.poolv1.near | 6,202,968 | 3 | 99.38% | 486 | 489 | | rekt.poolv1.near | 5,950,212 | 3 | 100% | 490 | 490 | | epic.poolv1.near | 5,639,256 | 2 | 100% | 326 | 326 | | fresh.poolv1.near | 5,460,410 | 2 | 100% | 327 | 327 | | buildlinks.poolv1.near | 4,838,398 | 2 | 99.38% | 325 | 327 | | jubi.poolv1.near | 4,805,921 | 2 | 100% | 326 | 326 | | openshards.poolv1.near | 4,644,553 | 2 | 100% | 326 | 326 | | jazza.poolv1.near | 4,563,432 | 2 | 100% | 327 | 327 | | northernlights.poolv1.near | 4,467,978 | 2 | 99.39% | 326 | 328 | | inotel.poolv1.near | 4,427,152 | 2 | 100% | 327 | 327 | | baziliknear.poolv1.near | 4,261,142 | 2 | 100% | 328 | 328 | | stakesabai.poolv1.near | 4,242,618 | 2 | 100% | 326 | 326 | | everstake.poolv1.near | 4,234,552 | 2 | 100% | 327 | 327 | | stakin.poolv1.near | 4,071,704 | 2 | 100% | 327 | 327 | | certusone.poolv1.near | 3,734,505 | 1 | 100% | 164 | 164 | | lux.poolv1.near | 3,705,394 | 1 | 100% | 163 | 163 | | staked.poolv1.near | 3,683,365 | 1 | 100% | 164 | 164 | | lunanova.poolv1.near | 3,597,231 | 1 | 100% | 163 | 163 | | appload.poolv1.near | 3,133,163 | 1 | 100% | 163 | 163 | | smart-stake.poolv1.near | 3,095,711 | 1 | 100% | 164 | 164 | | artemis.poolv1.near | 3,009,462 | 1 | 99.39% | 163 | 164 | | moonlet.poolv1.near | 2,790,296 | 1 | 100% | 163 | 163 | | nearfans.poolv1.near | 2,771,137 | 1 | 100% | 163 | 163 | | nodeasy.poolv1.near | 2,692,745 | 1 | 99.39% | 163 | 164 | | erm.poolv1.near | 2,653,524 | 1 | 100% | 164 | 164 | | zkv_staketosupportprivacy.poolv1.near | 2,548,343 | 1 | 99.39% | 163 | 164 | | dsrvlabs.poolv1.near | 2,542,925 | 1 | 100% | 164 | 164 | | 08investinwomen_runbybisontrails.poolv1.near | 2,493,123 | 1 | 100% | 163 | 163 | | electric.poolv1.near | 2,400,532 | 1 | 99.39% | 163 | 164 | | sparkpool.poolv1.near | 2,378,191 | 1 | 100% | 163 | 163 | | hashquark.poolv1.near | 2,376,424 | 1 | 100% | 164 | 164 | | masternode24.poolv1.near | 2,355,634 | 1 | 100% | 164 | 164 | | sharpdarts.poolv1.near | 2,332,398 | 1 | 99.38% | 162 | 163 | | fish.poolv1.near | 2,315,249 | 1 | 100% | 163 | 163 | | ashert.poolv1.near | 2,103,327 | 1 | 97.56% | 160 | 164 | | 01node.poolv1.near | 2,058,200 | 1 | 100% | 163 | 163 | | finoa.poolv1.near | 2,012,304 | 1 | 100% | 163 | 163 | | majlovesreg.poolv1.near | 2,005,032 | 1 | 100% | 164 | 164 | '--------------------------------------------------------------------------------------------------------------------' ``` </p> </details> --- ### `near validators next` > Displays details for the next round of validators. > > - total number of seats available > - seat price > - amount staked > - number of seats assigned per validator - arguments: `next` - options: `default` **Example:** ```bash near validators next ``` **Example for `mainnet`:** ```bash NEAR_ENV=mainnet near validators next ``` <details> <summary><strong>Example Response</strong></summary> <p> ```bash Next validators (total: 49, seat price: 1,983,932): .----------------------------------------------------------------------------------------------. | Status | Validator | Stake | Seats | |----------|----------------------------------------------|--------------------------|---------| | Rewarded | cryptium.poolv1.near | 13,945,727 -> 14,048,816 | 7 | | Rewarded | astro-stakers.poolv1.near | 11,660,189 -> 11,704,904 | 5 | | Rewarded | blockdaemon.poolv1.near | 11,542,867 -> 11,545,942 | 5 | | Rewarded | zavodil.poolv1.near | 11,183,187 -> 11,204,123 | 5 | | Rewarded | bisontrails.poolv1.near | 10,291,696 -> 10,297,923 | 5 | | Rewarded | dokiacapital.poolv1.near | 7,906,352 -> 8,097,275 | 4 | | Rewarded | chorusone.poolv1.near | 7,480,508 -> 7,500,576 | 3 | | Rewarded | figment.poolv1.near | 6,931,070 -> 6,932,916 | 3 | | Rewarded | stardust.poolv1.near | 6,401,678 -> 6,449,363 | 3 | | Rewarded | anonymous.poolv1.near | 6,291,821 -> 6,293,497 | 3 | | Rewarded | d1.poolv1.near | 6,265,109 -> 6,266,777 | 3 | | Rewarded | near8888.poolv1.near | 6,202,968 -> 6,204,620 | 3 | | Rewarded | rekt.poolv1.near | 5,950,212 -> 5,951,797 | 2 | | Rewarded | epic.poolv1.near | 5,639,256 -> 5,640,758 | 2 | | Rewarded | fresh.poolv1.near | 5,460,410 -> 5,461,811 | 2 | | Rewarded | buildlinks.poolv1.near | 4,838,398 -> 4,839,686 | 2 | | Rewarded | jubi.poolv1.near | 4,805,921 -> 4,807,201 | 2 | | Rewarded | openshards.poolv1.near | 4,644,553 -> 4,776,692 | 2 | | Rewarded | jazza.poolv1.near | 4,563,432 -> 4,564,648 | 2 | | Rewarded | northernlights.poolv1.near | 4,467,978 -> 4,469,168 | 2 | | Rewarded | inotel.poolv1.near | 4,427,152 -> 4,428,331 | 2 | | Rewarded | baziliknear.poolv1.near | 4,261,142 -> 4,290,338 | 2 | | Rewarded | stakesabai.poolv1.near | 4,242,618 -> 4,243,748 | 2 | | Rewarded | everstake.poolv1.near | 4,234,552 -> 4,235,679 | 2 | | Rewarded | stakin.poolv1.near | 4,071,704 -> 4,072,773 | 2 | | Rewarded | certusone.poolv1.near | 3,734,505 -> 3,735,500 | 1 | | Rewarded | lux.poolv1.near | 3,705,394 -> 3,716,381 | 1 | | Rewarded | staked.poolv1.near | 3,683,365 -> 3,684,346 | 1 | | Rewarded | lunanova.poolv1.near | 3,597,231 -> 3,597,836 | 1 | | Rewarded | appload.poolv1.near | 3,133,163 -> 3,152,302 | 1 | | Rewarded | smart-stake.poolv1.near | 3,095,711 -> 3,096,509 | 1 | | Rewarded | artemis.poolv1.near | 3,009,462 -> 3,010,265 | 1 | | Rewarded | moonlet.poolv1.near | 2,790,296 -> 2,948,565 | 1 | | Rewarded | nearfans.poolv1.near | 2,771,137 -> 2,771,875 | 1 | | Rewarded | nodeasy.poolv1.near | 2,692,745 -> 2,693,463 | 1 | | Rewarded | erm.poolv1.near | 2,653,524 -> 2,654,231 | 1 | | Rewarded | dsrvlabs.poolv1.near | 2,542,925 -> 2,571,865 | 1 | | Rewarded | zkv_staketosupportprivacy.poolv1.near | 2,548,343 -> 2,549,022 | 1 | | Rewarded | 08investinwomen_runbybisontrails.poolv1.near | 2,493,123 -> 2,493,787 | 1 | | Rewarded | masternode24.poolv1.near | 2,355,634 -> 2,456,226 | 1 | | Rewarded | fish.poolv1.near | 2,315,249 -> 2,415,831 | 1 | | Rewarded | electric.poolv1.near | 2,400,532 -> 2,401,172 | 1 | | Rewarded | sparkpool.poolv1.near | 2,378,191 -> 2,378,824 | 1 | | Rewarded | hashquark.poolv1.near | 2,376,424 -> 2,377,057 | 1 | | Rewarded | sharpdarts.poolv1.near | 2,332,398 -> 2,332,948 | 1 | | Rewarded | ashert.poolv1.near | 2,103,327 -> 2,103,887 | 1 | | Rewarded | 01node.poolv1.near | 2,058,200 -> 2,058,760 | 1 | | Rewarded | finoa.poolv1.near | 2,012,304 -> 2,015,808 | 1 | | Rewarded | majlovesreg.poolv1.near | 2,005,032 -> 2,005,566 | 1 | '----------------------------------------------------------------------------------------------' ``` </p> </details> --- ### `near proposals` > Displays validator proposals for [epoch](http://docs.near.org/docs/concepts/epoch) after next. > > - expected seat price > - status of proposals > - previous amount staked and new amount that _will_ be staked > - amount of seats assigned per validator - arguments: `none` - options: `default` **Example:** ```bash near proposals ``` **Example for `mainnet`:** ```bash NEAR_ENV=mainnet near proposals ``` <details> <summary><strong>Example Response</strong></summary> <p> ```bash Proposals for the epoch after next (new: 51, passing: 49, expected seat price = 1,983,932) .--------------------------------------------------------------------------------------------------------. | Status | Validator | Stake => New Stake | Seats | |--------------------|----------------------------------------------|--------------------------|---------| | Proposal(Accepted) | cryptium.poolv1.near | 13,945,727 => 14,041,766 | 7 | | Proposal(Accepted) | astro-stakers.poolv1.near | 11,660,189 => 11,705,673 | 5 | | Proposal(Accepted) | blockdaemon.poolv1.near | 11,542,867 => 11,545,942 | 5 | | Proposal(Accepted) | zavodil.poolv1.near | 11,183,187 => 11,207,805 | 5 | | Proposal(Accepted) | bisontrails.poolv1.near | 10,291,696 => 10,300,978 | 5 | | Proposal(Accepted) | dokiacapital.poolv1.near | 7,906,352 => 8,097,275 | 4 | | Proposal(Accepted) | chorusone.poolv1.near | 7,480,508 => 7,568,268 | 3 | | Proposal(Accepted) | figment.poolv1.near | 6,931,070 => 6,932,916 | 3 | | Proposal(Accepted) | stardust.poolv1.near | 6,401,678 => 6,449,363 | 3 | | Proposal(Accepted) | anonymous.poolv1.near | 6,291,821 => 6,293,497 | 3 | | Proposal(Accepted) | d1.poolv1.near | 6,265,109 => 6,266,777 | 3 | | Proposal(Accepted) | near8888.poolv1.near | 6,202,968 => 6,204,620 | 3 | | Proposal(Accepted) | rekt.poolv1.near | 5,950,212 => 5,951,797 | 2 | | Proposal(Accepted) | epic.poolv1.near | 5,639,256 => 5,640,758 | 2 | | Proposal(Accepted) | fresh.poolv1.near | 5,460,410 => 5,461,811 | 2 | | Proposal(Accepted) | buildlinks.poolv1.near | 4,838,398 => 4,839,686 | 2 | | Proposal(Accepted) | jubi.poolv1.near | 4,805,921 => 4,807,201 | 2 | | Proposal(Accepted) | openshards.poolv1.near | 4,644,553 => 4,776,692 | 2 | | Proposal(Accepted) | jazza.poolv1.near | 4,563,432 => 4,564,648 | 2 | | Proposal(Accepted) | northernlights.poolv1.near | 4,467,978 => 4,469,168 | 2 | | Proposal(Accepted) | inotel.poolv1.near | 4,427,152 => 4,428,331 | 2 | | Proposal(Accepted) | baziliknear.poolv1.near | 4,261,142 => 4,290,891 | 2 | | Proposal(Accepted) | stakesabai.poolv1.near | 4,242,618 => 4,243,748 | 2 | | Proposal(Accepted) | everstake.poolv1.near | 4,234,552 => 4,235,679 | 2 | | Proposal(Accepted) | stakin.poolv1.near | 4,071,704 => 4,072,773 | 2 | | Proposal(Accepted) | certusone.poolv1.near | 3,734,505 => 3,735,500 | 1 | | Proposal(Accepted) | lux.poolv1.near | 3,705,394 => 3,716,381 | 1 | | Proposal(Accepted) | staked.poolv1.near | 3,683,365 => 3,684,346 | 1 | | Proposal(Accepted) | lunanova.poolv1.near | 3,597,231 => 3,597,836 | 1 | | Proposal(Accepted) | appload.poolv1.near | 3,133,163 => 3,152,302 | 1 | | Proposal(Accepted) | smart-stake.poolv1.near | 3,095,711 => 3,096,509 | 1 | | Proposal(Accepted) | artemis.poolv1.near | 3,009,462 => 3,010,265 | 1 | | Proposal(Accepted) | moonlet.poolv1.near | 2,790,296 => 2,948,565 | 1 | | Proposal(Accepted) | nearfans.poolv1.near | 2,771,137 => 2,771,875 | 1 | | Proposal(Accepted) | nodeasy.poolv1.near | 2,692,745 => 2,693,463 | 1 | | Proposal(Accepted) | erm.poolv1.near | 2,653,524 => 2,654,231 | 1 | | Proposal(Accepted) | dsrvlabs.poolv1.near | 2,542,925 => 2,571,865 | 1 | | Proposal(Accepted) | zkv_staketosupportprivacy.poolv1.near | 2,548,343 => 2,549,022 | 1 | | Proposal(Accepted) | 08investinwomen_runbybisontrails.poolv1.near | 2,493,123 => 2,493,787 | 1 | | Proposal(Accepted) | masternode24.poolv1.near | 2,355,634 => 2,456,226 | 1 | | Proposal(Accepted) | fish.poolv1.near | 2,315,249 => 2,415,831 | 1 | | Proposal(Accepted) | electric.poolv1.near | 2,400,532 => 2,401,172 | 1 | | Proposal(Accepted) | sparkpool.poolv1.near | 2,378,191 => 2,378,824 | 1 | | Proposal(Accepted) | hashquark.poolv1.near | 2,376,424 => 2,377,057 | 1 | | Proposal(Accepted) | sharpdarts.poolv1.near | 2,332,398 => 2,332,948 | 1 | | Proposal(Accepted) | ashert.poolv1.near | 2,103,327 => 2,103,887 | 1 | | Proposal(Accepted) | 01node.poolv1.near | 2,058,200 => 2,059,314 | 1 | | Proposal(Accepted) | finoa.poolv1.near | 2,012,304 => 2,015,808 | 1 | | Proposal(Accepted) | majlovesreg.poolv1.near | 2,005,032 => 2,005,566 | 1 | | Proposal(Declined) | huobipool.poolv1.near | 1,666,976 | 0 | | Proposal(Declined) | hb436_pool.poolv1.near | 500,030 | 0 | '--------------------------------------------------------------------------------------------------------' ``` </p> </details> --- ## JS Contracts Enclave ### `near js` You can use `near js <command> <args>` to be able to interact with JS enclaved contracts. Run `near js --help` for instructions. An optional `--jsvm <accountId>` argument can be supplied to the following `js` subcommands to point to a different JSVM enclave contract. The default is set to `jsvm.testnet` and `jsvm.near` respectively for testnet and mainnet. Note that anything changing state in the enclave will require a deposit to maintain storage of either the contract bytes or the state of the contract itself. ### `near js deploy` > Deploys a smart contract to a given accountId on the JSVM enclave. - arguments: `accountId`, `base64File`, `deposit` - options: `jsvm` **Note:** You will need a full access key for the account you are deploying the contract to. ([`near login`](http://docs.near.org/docs/tools/near-cli#near-login)) **Example:** ```bash near deploy --accountId example-contract.testnet --base64File out/example.base64 --deposit 0.1 ``` <details> <summary><strong>Example Response</strong></summary> <p> Starting deployment. Account id: example-contract.testnet, node: https://rpc.testnet.near.org, helper: https://helper.testnet.near.org, file: out/example.base64, JSVM: jsvm.testnet Transaction Id 4Nxsszgh2LaXPZph37peZKDqPZeJEErPih6n4jWcGDEB To see the transaction in the transaction explorer, please open this url in your browser https://explorer.testnet.near.org/transactions/4Nxsszgh2LaXPZph37peZKDqPZeJEErPih6n4jWcGDEB Done deploying to example-contract.testnet </p> </details> ### `near js dev-deploy` > Creates a development account and deploys a smart contract to the enclave associated to the dev-account. No access keys needed. **_(`testnet` only)_** - arguments: `base64File` `deposit` - options: `jsvm` **Example:** ```bash near js dev-deploy --base64File out/example.base64 --deposit 0.1 ``` <details> <summary><strong>Example Response</strong></summary> <p> Starting deployment. Account id: dev-1653005231830-15694723179173, node: https://rpc.testnet.near.org, helper: https://helper.testnet.near.org, file: out/example.base64, JSVM: jsvm.testnet Transaction Id FTVd4TKzy9mrmWvok6qHaoX68cVZnUJp2VqUgH6Y446n To see the transaction in the transaction explorer, please open this url in your browser https://explorer.testnet.near.org/transactions/FTVd4TKzy9mrmWvok6qHaoX68cVZnUJp2VqUgH6Y446n Done deploying to dev-1653005231830-15694723179173 </p> </details> ### `near js call` > makes a contract call which can modify _or_ view state into the JSVM enclase **Note:** Contract calls require a transaction fee (gas) so you will need an access key for the `--accountId` that will be charged. ([`near login`](http://docs.near.org/docs/tools/near-cli#near-login)) - arguments: `contractName` `methodName` `{ args }` `--accountId` `--deposit` - options: `--gas` `--jsvm` **Example:** ```bash near js call dev-1653005231830-15694723179173 set_status '["hello world"]' --deposit 0.1 --account-id dev-1653005231830-15694723179173 ``` <details> <summary><strong>Example Response</strong></summary> <p> Scheduling a call in JSVM[jsvm.testnet]: dev-1653005231830-15694723179173.set_status(["hello world"]) with attached 0.1 NEAR Receipts: 5QUuNwSYrDcEPKuSnU7fKN7YCGfXmdmZR9m3zUSTek7P, 3YU4eFhqBruc4z8KKLZr1U1oY31A6Bfks45GLA2rq5GS Log [jsvm.testnet]: dev-1653005231830-15694723179173 set_status with message hello world Transaction Id sP8s9REgK9YcZzkudyccg8R968zYWDVGCNv4wxeZsUe To see the transaction in the transaction explorer, please open this url in your browser https://explorer.testnet.near.org/transactions/sP8s9REgK9YcZzkudyccg8R968zYWDVGCNv4wxeZsUe '' </p> </details> ### `near js view` > Makes a contract call which can **only** view state. _(Call is free of charge and does not require deposit)_ - arguments: `contractName` `method_name` `{ args }` - options: `jsvm` **Example:** ```bash near js view dev-1653005231830-15694723179173 get_status '["dev-1653005231830-15694723179173"]' --accountId dev-1653005231830-15694723179173 ``` <details> <summary><strong>Example Response</strong></summary> <p> View call in JSVM[jsvm.testnet]: dev-1653005231830-15694723179173.get_status(["dev-1653005231830-15694723179173"]) Log [jsvm.testnet]: get_status for account_id dev-1653005231830-15694723179173 'hello world' </p> </details> ### `near js remove` > Removes the contract on the JS enclase and refunds all the deposit to the actual account. - arguments: `accountId` - options: `jsvm` ```bash near js remove --accountId dev-1653005231830-15694723179173 ``` <details> <summary><strong>Example Response</strong></summary> <p> Removing contract from enclave. Account id: dev-1653005231830-15694723179173, JSVM: jsvm.testnet Transaction Id FGSfvoWmhS1fWb6ckpPMYvc7seNaGQ5MU7iSrY43ZWiG To see the transaction in the transaction explorer, please open this url in your browser https://explorer.testnet.near.org/transactions/FGSfvoWmhS1fWb6ckpPMYvc7seNaGQ5MU7iSrY43ZWiG </p> </details> ## REPL ### `near repl` > Launches NEAR [REPL](https://en.wikipedia.org/wiki/Read%E2%80%93eval%E2%80%93print_loop) _(an interactive JavaScript programming invironment)_ connected to NEAR. - arguments: `none` - options: `--accountId`, `--script` To launch, run: ```bash near repl ``` - You will then be shown a prompt `>` and can begin interacting with NEAR. - Try typing the following into your prompt that converts NEAR (Ⓝ) into yoctoNEAR (10^-24): ```bash nearAPI.utils.format.parseNearAmount('1000') ``` > You can also use an `--accountId` with `near repl`. The `script` argument allows you to pass the path to a javascript/typescript file that exports a `main` function taking a [`Context`](./context/index.d.ts) as an argument. Anything passed after `--` is passed to the script as the `argv` argument. Note: you will need to add `near-cli` as a dependency in order to import the types. e.g. ```ts import { Context } from "near-cli/context"; ``` **Example:** ```bash near repl --accountId example-acct.testnet ``` - Then try console logging `account` after the `>` prompt. ```bash console.log(account) ``` Or in a JS files ```js module.exports.main = async function main({account, near, nearAPI, argv}) { console.log(account); } ``` <details> <summary><strong>Example Response</strong></summary> <p> ```json Account { accessKeyByPublicKeyCache: {}, connection: Connection { networkId: 'default', provider: JsonRpcProvider { connection: [Object] }, signer: InMemorySigner { keyStore: [MergeKeyStore] } }, accountId: 'example-acct.testnet', _ready: Promise { undefined }, _state: { amount: '98786165075093615800000000', locked: '0', code_hash: '11111111111111111111111111111111', storage_usage: 741, storage_paid_at: 0, block_height: 21661252, block_hash: 'HbAj25dTzP3ssYjNRHov9BQ72UxpHGVqZK1mZwGdGNbo' } } ``` </p> </details> > You can also get a private key's public key. - First, declare a `privateKey` variable: ```js const myPrivateKey = "3fKM9Rr7LHyzhhzmmedXLvc59rayfh1oUYS3VfUcxwpAFQZtdx1G9aTY6i8hG9mQtYoycTEFTBtatgNKHRtYamrS"; ``` - Then run: ```js nearAPI.KeyPair.fromString(myPrivateKey).publicKey.toString(); ``` With NEAR REPL you have complete access to [`near-api-js`](https://github.com/near/near-api-js) to help you develop on the NEAR platform. --- ## Options | Option | Description | | -------------------------- | -------------------------------------------------------------------------------------------------------------------------------------- | | `--help` | Show help [boolean] | | `--version` | Show version number [boolean] | | `--nodeUrl, --node_url` | NEAR node URL [string] [default: "https://rpc.testnet.near.org"] | | `--networkId, --network_id`| NEAR network ID, allows using different keys based on network [string] [default: "testnet"] | | `--helperUrl` | NEAR contract helper URL [string] | | `--keyPath` | Path to master account key [string] | | `--accountId, --account_id`| Unique identifier for the account [string] | | `--useLedgerKey` | Use Ledger for signing with given HD key path [string] [default: "44'/397'/0'/0'/1'"] | | `--seedPhrase` | Seed phrase mnemonic [string] | | `--seedPath` | HD path derivation [string] [default: "m/44'/397'/0'"] | | `--walletUrl` | Website for NEAR Wallet [string] | | `--contractName` | Account name of contract [string] | | `--masterAccount` | Master account used when creating new accounts [string] | | `--helperAccount` | Expected top-level account for a network [string] | | `-v, --verbose` | Prints out verbose output [boolean] [default: false] | |`-f, --force` | Forcefully execute the desired action even if it is unsafe to do so [boolean] [default: false]| > Got a question? <a href="https://stackoverflow.com/questions/tagged/nearprotocol"> <h8>Ask it on StackOverflow!</h8></a> ## License This repository is distributed under the terms of both the MIT license and the Apache License (Version 2.0). See [LICENSE](LICENSE) and [LICENSE-APACHE](LICENSE-APACHE) for details. # ci-info Get details about the current Continuous Integration environment. Please [open an issue](https://github.com/watson/ci-info/issues/new?template=ci-server-not-detected.md) if your CI server isn't properly detected :) [](https://www.npmjs.com/package/ci-info) [](https://github.com/watson/ci-info/actions) [](https://github.com/feross/standard) ## Installation ```bash npm install ci-info --save ``` ## Usage ```js var ci = require('ci-info') if (ci.isCI) { console.log('The name of the CI server is:', ci.name) } else { console.log('This program is not running on a CI server') } ``` ## Supported CI tools Officially supported CI servers: | Name | Constant | isPR | | ------------------------------------------------------------------------------- | -------------------- | ---- | | [AWS CodeBuild](https://aws.amazon.com/codebuild/) | `ci.CODEBUILD` | 🚫 | | [AppVeyor](http://www.appveyor.com) | `ci.APPVEYOR` | ✅ | | [Azure Pipelines](https://azure.microsoft.com/en-us/services/devops/pipelines/) | `ci.AZURE_PIPELINES` | ✅ | | [Appcircle](https://appcircle.io/) | `ci.APPCIRCLE` | 🚫 | | [Bamboo](https://www.atlassian.com/software/bamboo) by Atlassian | `ci.BAMBOO` | 🚫 | | [Bitbucket Pipelines](https://bitbucket.org/product/features/pipelines) | `ci.BITBUCKET` | ✅ | | [Bitrise](https://www.bitrise.io/) | `ci.BITRISE` | ✅ | | [Buddy](https://buddy.works/) | `ci.BUDDY` | ✅ | | [Buildkite](https://buildkite.com) | `ci.BUILDKITE` | ✅ | | [CircleCI](http://circleci.com) | `ci.CIRCLE` | ✅ | | [Cirrus CI](https://cirrus-ci.org) | `ci.CIRRUS` | ✅ | | [Codefresh](https://codefresh.io/) | `ci.CODEFRESH` | ✅ | | [Codeship](https://codeship.com) | `ci.CODESHIP` | 🚫 | | [Drone](https://drone.io) | `ci.DRONE` | ✅ | | [dsari](https://github.com/rfinnie/dsari) | `ci.DSARI` | 🚫 | | [Expo Application Services](https://expo.dev/eas) | `ci.EAS_BUILD` | 🚫 | | [GitHub Actions](https://github.com/features/actions/) | `ci.GITHUB_ACTIONS` | ✅ | | [GitLab CI](https://about.gitlab.com/gitlab-ci/) | `ci.GITLAB` | ✅ | | [GoCD](https://www.go.cd/) | `ci.GOCD` | 🚫 | | [Hudson](http://hudson-ci.org) | `ci.HUDSON` | 🚫 | | [Jenkins CI](https://jenkins-ci.org) | `ci.JENKINS` | ✅ | | [LayerCI](https://layerci.com/) | `ci.LAYERCI` | ✅ | | [Magnum CI](https://magnum-ci.com) | `ci.MAGNUM` | 🚫 | | [Netlify CI](https://www.netlify.com/) | `ci.NETLIFY` | ✅ | | [Nevercode](http://nevercode.io/) | `ci.NEVERCODE` | ✅ | | [Render](https://render.com/) | `ci.RENDER` | ✅ | | [Sail CI](https://sail.ci/) | `ci.SAIL` | ✅ | | [Screwdriver](https://screwdriver.cd/) | `ci.SCREWDRIVER` | ✅ | | [Semaphore](https://semaphoreci.com) | `ci.SEMAPHORE` | ✅ | | [Shippable](https://www.shippable.com/) | `ci.SHIPPABLE` | ✅ | | [Solano CI](https://www.solanolabs.com/) | `ci.SOLANO` | ✅ | | [Strider CD](https://strider-cd.github.io/) | `ci.STRIDER` | 🚫 | | [TaskCluster](http://docs.taskcluster.net) | `ci.TASKCLUSTER` | 🚫 | | [TeamCity](https://www.jetbrains.com/teamcity/) by JetBrains | `ci.TEAMCITY` | 🚫 | | [Travis CI](http://travis-ci.org) | `ci.TRAVIS` | ✅ | | [Vercel](https://vercel.com/) | `ci.VERCEL` | 🚫 | | [Visual Studio App Center](https://appcenter.ms/) | `ci.APPCENTER` | 🚫 | ## API ### `ci.name` Returns a string containing name of the CI server the code is running on. If CI server is not detected, it returns `null`. Don't depend on the value of this string not to change for a specific vendor. If you find your self writing `ci.name === 'Travis CI'`, you most likely want to use `ci.TRAVIS` instead. ### `ci.isCI` Returns a boolean. Will be `true` if the code is running on a CI server, otherwise `false`. Some CI servers not listed here might still trigger the `ci.isCI` boolean to be set to `true` if they use certain vendor neutral environment variables. In those cases `ci.name` will be `null` and no vendor specific boolean will be set to `true`. ### `ci.isPR` Returns a boolean if PR detection is supported for the current CI server. Will be `true` if a PR is being tested, otherwise `false`. If PR detection is not supported for the current CI server, the value will be `null`. ### `ci.<VENDOR-CONSTANT>` A vendor specific boolean constant is exposed for each support CI vendor. A constant will be `true` if the code is determined to run on the given CI server, otherwise `false`. Examples of vendor constants are `ci.TRAVIS` or `ci.APPVEYOR`. For a complete list, see the support table above. Deprecated vendor constants that will be removed in the next major release: - `ci.TDDIUM` (Solano CI) This have been renamed `ci.SOLANO` ## License [MIT](LICENSE) [![NPM version][npm-image]][npm-url] [![build status][travis-image]][travis-url] [![Test coverage][coveralls-image]][coveralls-url] [![Downloads][downloads-image]][downloads-url] [](https://gitter.im/eslint/doctrine?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) # Doctrine Doctrine is a [JSDoc](http://usejsdoc.org) parser that parses documentation comments from JavaScript (you need to pass in the comment, not a whole JavaScript file). ## Installation You can install Doctrine using [npm](https://npmjs.com): ``` $ npm install doctrine --save-dev ``` Doctrine can also be used in web browsers using [Browserify](http://browserify.org). ## Usage Require doctrine inside of your JavaScript: ```js var doctrine = require("doctrine"); ``` ### parse() The primary method is `parse()`, which accepts two arguments: the JSDoc comment to parse and an optional options object. The available options are: * `unwrap` - set to `true` to delete the leading `/**`, any `*` that begins a line, and the trailing `*/` from the source text. Default: `false`. * `tags` - an array of tags to return. When specified, Doctrine returns only tags in this array. For example, if `tags` is `["param"]`, then only `@param` tags will be returned. Default: `null`. * `recoverable` - set to `true` to keep parsing even when syntax errors occur. Default: `false`. * `sloppy` - set to `true` to allow optional parameters to be specified in brackets (`@param {string} [foo]`). Default: `false`. * `lineNumbers` - set to `true` to add `lineNumber` to each node, specifying the line on which the node is found in the source. Default: `false`. * `range` - set to `true` to add `range` to each node, specifying the start and end index of the node in the original comment. Default: `false`. Here's a simple example: ```js var ast = doctrine.parse( [ "/**", " * This function comment is parsed by doctrine", " * @param {{ok:String}} userName", "*/" ].join('\n'), { unwrap: true }); ``` This example returns the following AST: { "description": "This function comment is parsed by doctrine", "tags": [ { "title": "param", "description": null, "type": { "type": "RecordType", "fields": [ { "type": "FieldType", "key": "ok", "value": { "type": "NameExpression", "name": "String" } } ] }, "name": "userName" } ] } See the [demo page](http://eslint.org/doctrine/demo/) more detail. ## Team These folks keep the project moving and are resources for help: * Nicholas C. Zakas ([@nzakas](https://github.com/nzakas)) - project lead * Yusuke Suzuki ([@constellation](https://github.com/constellation)) - reviewer ## Contributing Issues and pull requests will be triaged and responded to as quickly as possible. We operate under the [ESLint Contributor Guidelines](http://eslint.org/docs/developer-guide/contributing), so please be sure to read them before contributing. If you're not sure where to dig in, check out the [issues](https://github.com/eslint/doctrine/issues). ## Frequently Asked Questions ### Can I pass a whole JavaScript file to Doctrine? No. Doctrine can only parse JSDoc comments, so you'll need to pass just the JSDoc comment to Doctrine in order to work. ### License #### doctrine Copyright JS Foundation and other contributors, https://js.foundation Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. #### esprima some of functions is derived from esprima Copyright (C) 2012, 2011 [Ariya Hidayat](http://ariya.ofilabs.com/about) (twitter: [@ariyahidayat](http://twitter.com/ariyahidayat)) and other contributors. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #### closure-compiler some of extensions is derived from closure-compiler Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ ### Where to ask for help? Join our [Chatroom](https://gitter.im/eslint/doctrine) [npm-image]: https://img.shields.io/npm/v/doctrine.svg?style=flat-square [npm-url]: https://www.npmjs.com/package/doctrine [travis-image]: https://img.shields.io/travis/eslint/doctrine/master.svg?style=flat-square [travis-url]: https://travis-ci.org/eslint/doctrine [coveralls-image]: https://img.shields.io/coveralls/eslint/doctrine/master.svg?style=flat-square [coveralls-url]: https://coveralls.io/r/eslint/doctrine?branch=master [downloads-image]: http://img.shields.io/npm/dm/doctrine.svg?style=flat-square [downloads-url]: https://www.npmjs.com/package/doctrine # get-caller-file [](https://travis-ci.org/stefanpenner/get-caller-file) [](https://ci.appveyor.com/project/embercli/get-caller-file/branch/master) This is a utility, which allows a function to figure out from which file it was invoked. It does so by inspecting v8's stack trace at the time it is invoked. Inspired by http://stackoverflow.com/questions/13227489 *note: this relies on Node/V8 specific APIs, as such other runtimes may not work* ## Installation ```bash yarn add get-caller-file ``` ## Usage Given: ```js // ./foo.js const getCallerFile = require('get-caller-file'); module.exports = function() { return getCallerFile(); // figures out who called it }; ``` ```js // index.js const foo = require('./foo'); foo() // => /full/path/to/this/file/index.js ``` ## Options: * `getCallerFile(position = 2)`: where position is stack frame whos fileName we want. # color-convert [](https://travis-ci.org/Qix-/color-convert) Color-convert is a color conversion library for JavaScript and node. It converts all ways between `rgb`, `hsl`, `hsv`, `hwb`, `cmyk`, `ansi`, `ansi16`, `hex` strings, and CSS `keyword`s (will round to closest): ```js var convert = require('color-convert'); convert.rgb.hsl(140, 200, 100); // [96, 48, 59] convert.keyword.rgb('blue'); // [0, 0, 255] var rgbChannels = convert.rgb.channels; // 3 var cmykChannels = convert.cmyk.channels; // 4 var ansiChannels = convert.ansi16.channels; // 1 ``` # Install ```console $ npm install color-convert ``` # API Simply get the property of the _from_ and _to_ conversion that you're looking for. All functions have a rounded and unrounded variant. By default, return values are rounded. To get the unrounded (raw) results, simply tack on `.raw` to the function. All 'from' functions have a hidden property called `.channels` that indicates the number of channels the function expects (not including alpha). ```js var convert = require('color-convert'); // Hex to LAB convert.hex.lab('DEADBF'); // [ 76, 21, -2 ] convert.hex.lab.raw('DEADBF'); // [ 75.56213190997677, 20.653827952644754, -2.290532499330533 ] // RGB to CMYK convert.rgb.cmyk(167, 255, 4); // [ 35, 0, 98, 0 ] convert.rgb.cmyk.raw(167, 255, 4); // [ 34.509803921568626, 0, 98.43137254901961, 0 ] ``` ### Arrays All functions that accept multiple arguments also support passing an array. Note that this does **not** apply to functions that convert from a color that only requires one value (e.g. `keyword`, `ansi256`, `hex`, etc.) ```js var convert = require('color-convert'); convert.rgb.hex(123, 45, 67); // '7B2D43' convert.rgb.hex([123, 45, 67]); // '7B2D43' ``` ## Routing Conversions that don't have an _explicitly_ defined conversion (in [conversions.js](conversions.js)), but can be converted by means of sub-conversions (e.g. XYZ -> **RGB** -> CMYK), are automatically routed together. This allows just about any color model supported by `color-convert` to be converted to any other model, so long as a sub-conversion path exists. This is also true for conversions requiring more than one step in between (e.g. LCH -> **LAB** -> **XYZ** -> **RGB** -> Hex). Keep in mind that extensive conversions _may_ result in a loss of precision, and exist only to be complete. For a list of "direct" (single-step) conversions, see [conversions.js](conversions.js). # Contribute If there is a new model you would like to support, or want to add a direct conversion between two existing models, please send us a pull request. # License Copyright &copy; 2011-2016, Heather Arthur and Josh Junon. Licensed under the [MIT License](LICENSE). # Tools ## clang-format The clang-format checking tools is designed to check changed lines of code compared to given git-refs. ## Migration Script The migration tool is designed to reduce repetitive work in the migration process. However, the script is not aiming to convert every thing for you. There are usually some small fixes and major reconstruction required. ### How To Use To run the conversion script, first make sure you have the latest `node-addon-api` in your `node_modules` directory. ``` npm install node-addon-api ``` Then run the script passing your project directory ``` node ./node_modules/node-addon-api/tools/conversion.js ./ ``` After finish, recompile and debug things that are missed by the script. ### Quick Fixes Here is the list of things that can be fixed easily. 1. Change your methods' return value to void if it doesn't return value to JavaScript. 2. Use `.` to access attribute or to invoke member function in Napi::Object instead of `->`. 3. `Napi::New(env, value);` to `Napi::[Type]::New(env, value); ### Major Reconstructions The implementation of `Napi::ObjectWrap` is significantly different from NAN's. `Napi::ObjectWrap` takes a pointer to the wrapped object and creates a reference to the wrapped object inside ObjectWrap constructor. `Napi::ObjectWrap` also associates wrapped object's instance methods to Javascript module instead of static methods like NAN. So if you use Nan::ObjectWrap in your module, you will need to execute the following steps. 1. Convert your [ClassName]::New function to a constructor function that takes a `Napi::CallbackInfo`. Declare it as ``` [ClassName](const Napi::CallbackInfo& info); ``` and define it as ``` [ClassName]::[ClassName](const Napi::CallbackInfo& info) : Napi::ObjectWrap<[ClassName]>(info){ ... } ``` This way, the `Napi::ObjectWrap` constructor will be invoked after the object has been instantiated and `Napi::ObjectWrap` can use the `this` pointer to create a reference to the wrapped object. 2. Move your original constructor code into the new constructor. Delete your original constructor. 3. In your class initialization function, associate native methods in the following way. ``` Napi::FunctionReference constructor; void [ClassName]::Init(Napi::Env env, Napi::Object exports, Napi::Object module) { Napi::HandleScope scope(env); Napi::Function ctor = DefineClass(env, "Canvas", { InstanceMethod<&[ClassName]::Func1>("Func1"), InstanceMethod<&[ClassName]::Func2>("Func2"), InstanceAccessor<&[ClassName]::ValueGetter>("Value"), StaticMethod<&[ClassName]::StaticMethod>("MethodName"), InstanceValue("Value", Napi::[Type]::New(env, value)), }); constructor = Napi::Persistent(ctor); constructor .SuppressDestruct(); exports.Set("[ClassName]", ctor); } ``` 4. In function where you need to Unwrap the ObjectWrap in NAN like `[ClassName]* native = Nan::ObjectWrap::Unwrap<[ClassName]>(info.This());`, use `this` pointer directly as the unwrapped object as each ObjectWrap instance is associated with a unique object instance. If you still find issues after following this guide, please leave us an issue describing your problem and we will try to resolve it. # fs-constants Small module that allows you to get the fs constants across Node and the browser. ``` npm install fs-constants ``` Previously you would use `require('constants')` for this in node but that has been deprecated and changed to `require('fs').constants` which does not browserify. This module uses `require('constants')` in the browser and `require('fs').constants` in node to work around this ## Usage ``` js var constants = require('fs-constants') console.log('constants:', constants) ``` ## License MIT <p align="center"> <a href="https://gulpjs.com"> <img height="257" width="114" src="https://raw.githubusercontent.com/gulpjs/artwork/master/gulp-2x.png"> </a> </p> # glob-parent [![NPM version][npm-image]][npm-url] [![Downloads][downloads-image]][npm-url] [![Azure Pipelines Build Status][azure-pipelines-image]][azure-pipelines-url] [![Travis Build Status][travis-image]][travis-url] [![AppVeyor Build Status][appveyor-image]][appveyor-url] [![Coveralls Status][coveralls-image]][coveralls-url] [![Gitter chat][gitter-image]][gitter-url] Extract the non-magic parent path from a glob string. ## Usage ```js var globParent = require('glob-parent'); globParent('path/to/*.js'); // 'path/to' globParent('/root/path/to/*.js'); // '/root/path/to' globParent('/*.js'); // '/' globParent('*.js'); // '.' globParent('**/*.js'); // '.' globParent('path/{to,from}'); // 'path' globParent('path/!(to|from)'); // 'path' globParent('path/?(to|from)'); // 'path' globParent('path/+(to|from)'); // 'path' globParent('path/*(to|from)'); // 'path' globParent('path/@(to|from)'); // 'path' globParent('path/**/*'); // 'path' // if provided a non-glob path, returns the nearest dir globParent('path/foo/bar.js'); // 'path/foo' globParent('path/foo/'); // 'path/foo' globParent('path/foo'); // 'path' (see issue #3 for details) ``` ## API ### `globParent(maybeGlobString, [options])` Takes a string and returns the part of the path before the glob begins. Be aware of Escaping rules and Limitations below. #### options ```js { // Disables the automatic conversion of slashes for Windows flipBackslashes: true } ``` ## Escaping The following characters have special significance in glob patterns and must be escaped if you want them to be treated as regular path characters: - `?` (question mark) unless used as a path segment alone - `*` (asterisk) - `|` (pipe) - `(` (opening parenthesis) - `)` (closing parenthesis) - `{` (opening curly brace) - `}` (closing curly brace) - `[` (opening bracket) - `]` (closing bracket) **Example** ```js globParent('foo/[bar]/') // 'foo' globParent('foo/\\[bar]/') // 'foo/[bar]' ``` ## Limitations ### Braces & Brackets This library attempts a quick and imperfect method of determining which path parts have glob magic without fully parsing/lexing the pattern. There are some advanced use cases that can trip it up, such as nested braces where the outer pair is escaped and the inner one contains a path separator. If you find yourself in the unlikely circumstance of being affected by this or need to ensure higher-fidelity glob handling in your library, it is recommended that you pre-process your input with [expand-braces] and/or [expand-brackets]. ### Windows Backslashes are not valid path separators for globs. If a path with backslashes is provided anyway, for simple cases, glob-parent will replace the path separator for you and return the non-glob parent path (now with forward-slashes, which are still valid as Windows path separators). This cannot be used in conjunction with escape characters. ```js // BAD globParent('C:\\Program Files \\(x86\\)\\*.ext') // 'C:/Program Files /(x86/)' // GOOD globParent('C:/Program Files\\(x86\\)/*.ext') // 'C:/Program Files (x86)' ``` If you are using escape characters for a pattern without path parts (i.e. relative to `cwd`), prefix with `./` to avoid confusing glob-parent. ```js // BAD globParent('foo \\[bar]') // 'foo ' globParent('foo \\[bar]*') // 'foo ' // GOOD globParent('./foo \\[bar]') // 'foo [bar]' globParent('./foo \\[bar]*') // '.' ``` ## License ISC [expand-braces]: https://github.com/jonschlinkert/expand-braces [expand-brackets]: https://github.com/jonschlinkert/expand-brackets [downloads-image]: https://img.shields.io/npm/dm/glob-parent.svg [npm-url]: https://www.npmjs.com/package/glob-parent [npm-image]: https://img.shields.io/npm/v/glob-parent.svg [azure-pipelines-url]: https://dev.azure.com/gulpjs/gulp/_build/latest?definitionId=2&branchName=master [azure-pipelines-image]: https://dev.azure.com/gulpjs/gulp/_apis/build/status/glob-parent?branchName=master [travis-url]: https://travis-ci.org/gulpjs/glob-parent [travis-image]: https://img.shields.io/travis/gulpjs/glob-parent.svg?label=travis-ci [appveyor-url]: https://ci.appveyor.com/project/gulpjs/glob-parent [appveyor-image]: https://img.shields.io/appveyor/ci/gulpjs/glob-parent.svg?label=appveyor [coveralls-url]: https://coveralls.io/r/gulpjs/glob-parent [coveralls-image]: https://img.shields.io/coveralls/gulpjs/glob-parent/master.svg [gitter-url]: https://gitter.im/gulpjs/gulp [gitter-image]: https://badges.gitter.im/gulpjs/gulp.svg # clone-response > Clone a Node.js HTTP response stream [](https://travis-ci.org/lukechilds/clone-response) [](https://coveralls.io/github/lukechilds/clone-response?branch=master) [](https://www.npmjs.com/package/clone-response) [](https://www.npmjs.com/package/clone-response) Returns a new stream and copies over all properties and methods from the original response giving you a complete duplicate. This is useful in situations where you need to consume the response stream but also want to pass an unconsumed stream somewhere else to be consumed later. ## Install ```shell npm install --save clone-response ``` ## Usage ```js const http = require('http'); const cloneResponse = require('clone-response'); http.get('http://example.com', response => { const clonedResponse = cloneResponse(response); response.pipe(process.stdout); setImmediate(() => { // The response stream has already been consumed by the time this executes, // however the cloned response stream is still available. doSomethingWithResponse(clonedResponse); }); }); ``` Please bear in mind that the process of cloning a stream consumes it. However, you can consume a stream multiple times in the same tick, therefore allowing you to create multiple clones. e.g: ```js const clone1 = cloneResponse(response); const clone2 = cloneResponse(response); // response can still be consumed in this tick but cannot be consumed if passed // into any async callbacks. clone1 and clone2 can be passed around and be // consumed in the future. ``` ## API ### cloneResponse(response) Returns a clone of the passed in response. #### response Type: `stream` A [Node.js HTTP response stream](https://nodejs.org/api/http.html#http_class_http_incomingmessage) to clone. ## License MIT © Luke Childs # mime-types [![NPM Version][npm-version-image]][npm-url] [![NPM Downloads][npm-downloads-image]][npm-url] [![Node.js Version][node-version-image]][node-version-url] [![Build Status][ci-image]][ci-url] [![Test Coverage][coveralls-image]][coveralls-url] The ultimate javascript content-type utility. Similar to [the `mime@1.x` module](https://www.npmjs.com/package/mime), except: - __No fallbacks.__ Instead of naively returning the first available type, `mime-types` simply returns `false`, so do `var type = mime.lookup('unrecognized') || 'application/octet-stream'`. - No `new Mime()` business, so you could do `var lookup = require('mime-types').lookup`. - No `.define()` functionality - Bug fixes for `.lookup(path)` Otherwise, the API is compatible with `mime` 1.x. ## Install This is a [Node.js](https://nodejs.org/en/) module available through the [npm registry](https://www.npmjs.com/). Installation is done using the [`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally): ```sh $ npm install mime-types ``` ## Adding Types All mime types are based on [mime-db](https://www.npmjs.com/package/mime-db), so open a PR there if you'd like to add mime types. ## API ```js var mime = require('mime-types') ``` All functions return `false` if input is invalid or not found. ### mime.lookup(path) Lookup the content-type associated with a file. ```js mime.lookup('json') // 'application/json' mime.lookup('.md') // 'text/markdown' mime.lookup('file.html') // 'text/html' mime.lookup('folder/file.js') // 'application/javascript' mime.lookup('folder/.htaccess') // false mime.lookup('cats') // false ``` ### mime.contentType(type) Create a full content-type header given a content-type or extension. When given an extension, `mime.lookup` is used to get the matching content-type, otherwise the given content-type is used. Then if the content-type does not already have a `charset` parameter, `mime.charset` is used to get the default charset and add to the returned content-type. ```js mime.contentType('markdown') // 'text/x-markdown; charset=utf-8' mime.contentType('file.json') // 'application/json; charset=utf-8' mime.contentType('text/html') // 'text/html; charset=utf-8' mime.contentType('text/html; charset=iso-8859-1') // 'text/html; charset=iso-8859-1' // from a full path mime.contentType(path.extname('/path/to/file.json')) // 'application/json; charset=utf-8' ``` ### mime.extension(type) Get the default extension for a content-type. ```js mime.extension('application/octet-stream') // 'bin' ``` ### mime.charset(type) Lookup the implied default charset of a content-type. ```js mime.charset('text/markdown') // 'UTF-8' ``` ### var type = mime.types[extension] A map of content-types by extension. ### [extensions...] = mime.extensions[type] A map of extensions by content-type. ## License [MIT](LICENSE) [ci-image]: https://badgen.net/github/checks/jshttp/mime-types/master?label=ci [ci-url]: https://github.com/jshttp/mime-types/actions/workflows/ci.yml [coveralls-image]: https://badgen.net/coveralls/c/github/jshttp/mime-types/master [coveralls-url]: https://coveralls.io/r/jshttp/mime-types?branch=master [node-version-image]: https://badgen.net/npm/node/mime-types [node-version-url]: https://nodejs.org/en/download [npm-downloads-image]: https://badgen.net/npm/dm/mime-types [npm-url]: https://npmjs.org/package/mime-types [npm-version-image]: https://badgen.net/npm/v/mime-types # Platform.js v1.3.5 A platform detection library that works on nearly all JavaScript platforms. ## Disclaimer Platform.js is for informational purposes only & **not** intended as a substitution for feature detection/inference checks. ## Documentation * [doc/README.md](https://github.com/bestiejs/platform.js/blob/master/doc/README.md#readme) * [wiki/Changelog](https://github.com/bestiejs/platform.js/wiki/Changelog) * [wiki/Roadmap](https://github.com/bestiejs/platform.js/wiki/Roadmap) * [platform.js demo](https://bestiejs.github.io/platform.js/) (See also [whatsmyua.info](https://www.whatsmyua.info/) for comparisons between platform.js and other platform detection libraries) ## Installation In a browser: ```html <script src="platform.js"></script> ``` In an AMD loader: ```js require(['platform'], function(platform) {/*…*/}); ``` Using npm: ```shell $ npm i --save platform ``` In Node.js: ```js var platform = require('platform'); ``` Usage example: ```js // on IE10 x86 platform preview running in IE7 compatibility mode on Windows 7 64 bit edition platform.name; // 'IE' platform.version; // '10.0' platform.layout; // 'Trident' platform.os; // 'Windows Server 2008 R2 / 7 x64' platform.description; // 'IE 10.0 x86 (platform preview; running in IE 7 mode) on Windows Server 2008 R2 / 7 x64' // or on an iPad platform.name; // 'Safari' platform.version; // '5.1' platform.product; // 'iPad' platform.manufacturer; // 'Apple' platform.layout; // 'WebKit' platform.os; // 'iOS 5.0' platform.description; // 'Safari 5.1 on Apple iPad (iOS 5.0)' // or parsing a given UA string var info = platform.parse('Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7.2; en; rv:2.0) Gecko/20100101 Firefox/4.0 Opera 11.52'); info.name; // 'Opera' info.version; // '11.52' info.layout; // 'Presto' info.os; // 'Mac OS X 10.7.2' info.description; // 'Opera 11.52 (identifying as Firefox 4.0) on Mac OS X 10.7.2' ``` ## Support Tested in Chrome 82-83, Firefox 77-78, IE 11, Edge 82-83, Safari 12-13, Node.js 4-14, & PhantomJS 2.1.1. ## BestieJS Platform.js is part of the BestieJS *“Best in Class”* module collection. This means we promote solid browser/environment support, ES5+ precedents, unit testing, & plenty of documentation. # is-extglob [](https://www.npmjs.com/package/is-extglob) [](https://npmjs.org/package/is-extglob) [](https://travis-ci.org/jonschlinkert/is-extglob) > Returns true if a string has an extglob. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save is-extglob ``` ## Usage ```js var isExtglob = require('is-extglob'); ``` **True** ```js isExtglob('?(abc)'); isExtglob('@(abc)'); isExtglob('!(abc)'); isExtglob('*(abc)'); isExtglob('+(abc)'); ``` **False** Escaped extglobs: ```js isExtglob('\\?(abc)'); isExtglob('\\@(abc)'); isExtglob('\\!(abc)'); isExtglob('\\*(abc)'); isExtglob('\\+(abc)'); ``` Everything else... ```js isExtglob('foo.js'); isExtglob('!foo.js'); isExtglob('*.js'); isExtglob('**/abc.js'); isExtglob('abc/*.js'); isExtglob('abc/(aaa|bbb).js'); isExtglob('abc/[a-z].js'); isExtglob('abc/{a,b}.js'); isExtglob('abc/?.js'); isExtglob('abc.js'); isExtglob('abc/def/ghi.js'); ``` ## History **v2.0** Adds support for escaping. Escaped exglobs no longer return true. ## About ### Related projects * [has-glob](https://www.npmjs.com/package/has-glob): Returns `true` if an array has a glob pattern. | [homepage](https://github.com/jonschlinkert/has-glob "Returns `true` if an array has a glob pattern.") * [is-glob](https://www.npmjs.com/package/is-glob): Returns `true` if the given string looks like a glob pattern or an extglob pattern… [more](https://github.com/jonschlinkert/is-glob) | [homepage](https://github.com/jonschlinkert/is-glob "Returns `true` if the given string looks like a glob pattern or an extglob pattern. This makes it easy to create code that only uses external modules like node-glob when necessary, resulting in much faster code execution and initialization time, and a bet") * [micromatch](https://www.npmjs.com/package/micromatch): Glob matching for javascript/node.js. A drop-in replacement and faster alternative to minimatch and multimatch. | [homepage](https://github.com/jonschlinkert/micromatch "Glob matching for javascript/node.js. A drop-in replacement and faster alternative to minimatch and multimatch.") ### Contributing Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). ### Building docs _(This document was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme) (a [verb](https://github.com/verbose/verb) generator), please don't edit the readme directly. Any changes to the readme must be made in [.verb.md](.verb.md).)_ To generate the readme and API documentation with [verb](https://github.com/verbose/verb): ```sh $ npm install -g verb verb-generate-readme && verb ``` ### Running tests Install dev dependencies: ```sh $ npm install -d && npm test ``` ### Author **Jon Schlinkert** * [github/jonschlinkert](https://github.com/jonschlinkert) * [twitter/jonschlinkert](http://twitter.com/jonschlinkert) ### License Copyright © 2016, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT license](https://github.com/jonschlinkert/is-extglob/blob/master/LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.1.31, on October 12, 2016._ <p align="center"> <a href="http://gulpjs.com"> <img height="257" width="114" src="https://raw.githubusercontent.com/gulpjs/artwork/master/gulp-2x.png"> </a> </p> # flagged-respawn [![NPM version][npm-image]][npm-url] [![Downloads][downloads-image]][npm-url] [![Travis Build Status][travis-image]][travis-url] [![AppVeyor Build Status][appveyor-image]][appveyor-url] [![Coveralls Status][coveralls-image]][coveralls-url] [![Gitter chat][gitter-image]][gitter-url] A tool for respawning node binaries when special flags are present. ## What is it? Say you wrote a command line tool that runs arbitrary javascript (e.g. task runner, test framework, etc). For the sake of discussion, let's pretend it's a testing harness you've named `testify`. Everything is going splendidly until one day you decide to test some code that relies on a feature behind a v8 flag in node (`--harmony`, for example). Without much thought, you run `testify --harmony spec tests.js`. It doesn't work. After digging around for a bit, you realize this produces a [`process.argv`](http://nodejs.org/docs/latest/api/process.html#process_process_argv) of: `['node', '/usr/local/bin/test', '--harmony', 'spec', 'tests.js']` Crap. The `--harmony` flag is in the wrong place! It should be applied to the **node** command, not our binary. What we actually wanted was this: `['node', '--harmony', '/usr/local/bin/test', 'spec', 'tests.js']` Flagged-respawn fixes this problem and handles all the edge cases respawning creates, such as: - Providing a method to determine if a respawn is needed. - Piping stderr/stdout from the child into the parent. - Making the parent process exit with the same code as the child. - If the child is killed, making the parent exit with the same signal. To see it in action, clone this repository and run `npm install` / `npm run respawn` / `npm run nospawn`. ## Sample Usage ```js #!/usr/bin/env node const flaggedRespawn = require('flagged-respawn'); // get a list of all possible v8 flags for the running version of node const v8flags = require('v8flags').fetch(); flaggedRespawn(v8flags, process.argv, function (ready, child) { if (ready) { console.log('Running!'); // your cli code here } else { console.log('Special flags found, respawning.'); } if (process.pid !== child.pid) { console.log('Respawned to PID:', child.pid); } }); ``` ## API ### <u>flaggedRespawn(flags, argv, [ forcedFlags, ] callback) : Void</u> Respawns the script itself when *argv* has special flag contained in *flags* and/or *forcedFlags* is not empty. Because members of *flags* and *forcedFlags* are passed to `node` command, each of them needs to be a node flag or a V8 flag. #### Forbid respawning If `--no-respawning` flag is given in *argv*, this function does not respawned even if *argv* contains members of flags or *forcedFlags* is not empty. (This flag is also used internally to prevent from respawning more than once). #### Parameter: | Parameter | Type | Description | |:--------------|:------:|:----------------------------------------------------| | *flags* | Array | An array of node flags and V8 flags which are available when present in *argv*. | | *argv* | Array | Command line arguments to respawn. | | *forcedFlags* | Array or String | An array of node flags or a string of a single flag and V8 flags for respawning forcely. | | *callback* | function | A called function when not respawning or after respawned. | * **<u><i>callback</i>(ready, proc, argv) : Void</u>** *callback* function is called both when respawned or not, and it can be distinguished by callback's argument: *ready*. (*ready* indicates whether a process spawned its child process (false) or not (true), but it does not indicate whether a process is a spawned child process or not. *ready* for a spawned child process is true.) *argv* is an array of command line arguments which is respawned (when *ready* is false) or is passed current process except flags within *flags* and `--no-respawning` (when *ready* is true). **Parameter:** | Parameter | Type | Description | |:----------|:-------:|:--------------------------| | *ready* | boolean | True, if not respawning and is ready to execute main function. | | *proc* | object | Child process object if respawned, otherwise current process object. | | *argv* | Array | An array of command line arguments. | ## License MIT [downloads-image]: http://img.shields.io/npm/dm/flagged-respawn.svg [npm-url]: https://www.npmjs.com/package/flagged-respawn [npm-image]: http://img.shields.io/npm/v/flagged-respawn.svg [travis-url]: https://travis-ci.org/gulpjs/flagged-respawn [travis-image]: http://img.shields.io/travis/gulpjs/flagged-respawn.svg?label=travis-ci [appveyor-url]: https://ci.appveyor.com/project/gulpjs/flagged-respawn [appveyor-image]: https://img.shields.io/appveyor/ci/gulpjs/flagged-respawn.svg?label=appveyor [coveralls-url]: https://coveralls.io/r/gulpjs/flagged-respawn [coveralls-image]: http://img.shields.io/coveralls/gulpjs/flagged-respawn/master.svg [gitter-url]: https://gitter.im/gulpjs/gulp [gitter-image]: https://badges.gitter.im/gulpjs/gulp.svg # axios [](https://www.npmjs.org/package/axios) [](https://travis-ci.org/axios/axios) [](https://coveralls.io/r/mzabriskie/axios) [](https://packagephobia.now.sh/result?p=axios) [](http://npm-stat.com/charts.html?package=axios) [](https://gitter.im/mzabriskie/axios) [](https://www.codetriage.com/axios/axios) Promise based HTTP client for the browser and node.js ## Features - Make [XMLHttpRequests](https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest) from the browser - Make [http](http://nodejs.org/api/http.html) requests from node.js - Supports the [Promise](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise) API - Intercept request and response - Transform request and response data - Cancel requests - Automatic transforms for JSON data - Client side support for protecting against [XSRF](http://en.wikipedia.org/wiki/Cross-site_request_forgery) ## Browser Support  |  |  |  |  |  | --- | --- | --- | --- | --- | --- | Latest ✔ | Latest ✔ | Latest ✔ | Latest ✔ | Latest ✔ | 11 ✔ | [](https://saucelabs.com/u/axios) ## Installing Using npm: ```bash $ npm install axios ``` Using bower: ```bash $ bower install axios ``` Using yarn: ```bash $ yarn add axios ``` Using cdn: ```html <script src="https://unpkg.com/axios/dist/axios.min.js"></script> ``` ## Example ### note: CommonJS usage In order to gain the TypeScript typings (for intellisense / autocomplete) while using CommonJS imports with `require()` use the following approach: ```js const axios = require('axios').default; // axios.<method> will now provide autocomplete and parameter typings ``` Performing a `GET` request ```js const axios = require('axios'); // Make a request for a user with a given ID axios.get('/user?ID=12345') .then(function (response) { // handle success console.log(response); }) .catch(function (error) { // handle error console.log(error); }) .finally(function () { // always executed }); // Optionally the request above could also be done as axios.get('/user', { params: { ID: 12345 } }) .then(function (response) { console.log(response); }) .catch(function (error) { console.log(error); }) .finally(function () { // always executed }); // Want to use async/await? Add the `async` keyword to your outer function/method. async function getUser() { try { const response = await axios.get('/user?ID=12345'); console.log(response); } catch (error) { console.error(error); } } ``` > **NOTE:** `async/await` is part of ECMAScript 2017 and is not supported in Internet > Explorer and older browsers, so use with caution. Performing a `POST` request ```js axios.post('/user', { firstName: 'Fred', lastName: 'Flintstone' }) .then(function (response) { console.log(response); }) .catch(function (error) { console.log(error); }); ``` Performing multiple concurrent requests ```js function getUserAccount() { return axios.get('/user/12345'); } function getUserPermissions() { return axios.get('/user/12345/permissions'); } axios.all([getUserAccount(), getUserPermissions()]) .then(axios.spread(function (acct, perms) { // Both requests are now complete })); ``` ## axios API Requests can be made by passing the relevant config to `axios`. ##### axios(config) ```js // Send a POST request axios({ method: 'post', url: '/user/12345', data: { firstName: 'Fred', lastName: 'Flintstone' } }); ``` ```js // GET request for remote image axios({ method: 'get', url: 'http://bit.ly/2mTM3nY', responseType: 'stream' }) .then(function (response) { response.data.pipe(fs.createWriteStream('ada_lovelace.jpg')) }); ``` ##### axios(url[, config]) ```js // Send a GET request (default method) axios('/user/12345'); ``` ### Request method aliases For convenience aliases have been provided for all supported request methods. ##### axios.request(config) ##### axios.get(url[, config]) ##### axios.delete(url[, config]) ##### axios.head(url[, config]) ##### axios.options(url[, config]) ##### axios.post(url[, data[, config]]) ##### axios.put(url[, data[, config]]) ##### axios.patch(url[, data[, config]]) ###### NOTE When using the alias methods `url`, `method`, and `data` properties don't need to be specified in config. ### Concurrency Helper functions for dealing with concurrent requests. ##### axios.all(iterable) ##### axios.spread(callback) ### Creating an instance You can create a new instance of axios with a custom config. ##### axios.create([config]) ```js const instance = axios.create({ baseURL: 'https://some-domain.com/api/', timeout: 1000, headers: {'X-Custom-Header': 'foobar'} }); ``` ### Instance methods The available instance methods are listed below. The specified config will be merged with the instance config. ##### axios#request(config) ##### axios#get(url[, config]) ##### axios#delete(url[, config]) ##### axios#head(url[, config]) ##### axios#options(url[, config]) ##### axios#post(url[, data[, config]]) ##### axios#put(url[, data[, config]]) ##### axios#patch(url[, data[, config]]) ##### axios#getUri([config]) ## Request Config These are the available config options for making requests. Only the `url` is required. Requests will default to `GET` if `method` is not specified. ```js { // `url` is the server URL that will be used for the request url: '/user', // `method` is the request method to be used when making the request method: 'get', // default // `baseURL` will be prepended to `url` unless `url` is absolute. // It can be convenient to set `baseURL` for an instance of axios to pass relative URLs // to methods of that instance. baseURL: 'https://some-domain.com/api/', // `transformRequest` allows changes to the request data before it is sent to the server // This is only applicable for request methods 'PUT', 'POST', 'PATCH' and 'DELETE' // The last function in the array must return a string or an instance of Buffer, ArrayBuffer, // FormData or Stream // You may modify the headers object. transformRequest: [function (data, headers) { // Do whatever you want to transform the data return data; }], // `transformResponse` allows changes to the response data to be made before // it is passed to then/catch transformResponse: [function (data) { // Do whatever you want to transform the data return data; }], // `headers` are custom headers to be sent headers: {'X-Requested-With': 'XMLHttpRequest'}, // `params` are the URL parameters to be sent with the request // Must be a plain object or a URLSearchParams object params: { ID: 12345 }, // `paramsSerializer` is an optional function in charge of serializing `params` // (e.g. https://www.npmjs.com/package/qs, http://api.jquery.com/jquery.param/) paramsSerializer: function (params) { return Qs.stringify(params, {arrayFormat: 'brackets'}) }, // `data` is the data to be sent as the request body // Only applicable for request methods 'PUT', 'POST', and 'PATCH' // When no `transformRequest` is set, must be of one of the following types: // - string, plain object, ArrayBuffer, ArrayBufferView, URLSearchParams // - Browser only: FormData, File, Blob // - Node only: Stream, Buffer data: { firstName: 'Fred' }, // syntax alternative to send data into the body // method post // only the value is sent, not the key data: 'Country=Brasil&City=Belo Horizonte', // `timeout` specifies the number of milliseconds before the request times out. // If the request takes longer than `timeout`, the request will be aborted. timeout: 1000, // default is `0` (no timeout) // `withCredentials` indicates whether or not cross-site Access-Control requests // should be made using credentials withCredentials: false, // default // `adapter` allows custom handling of requests which makes testing easier. // Return a promise and supply a valid response (see lib/adapters/README.md). adapter: function (config) { /* ... */ }, // `auth` indicates that HTTP Basic auth should be used, and supplies credentials. // This will set an `Authorization` header, overwriting any existing // `Authorization` custom headers you have set using `headers`. // Please note that only HTTP Basic auth is configurable through this parameter. // For Bearer tokens and such, use `Authorization` custom headers instead. auth: { username: 'janedoe', password: 's00pers3cret' }, // `responseType` indicates the type of data that the server will respond with // options are: 'arraybuffer', 'document', 'json', 'text', 'stream' // browser only: 'blob' responseType: 'json', // default // `responseEncoding` indicates encoding to use for decoding responses // Note: Ignored for `responseType` of 'stream' or client-side requests responseEncoding: 'utf8', // default // `xsrfCookieName` is the name of the cookie to use as a value for xsrf token xsrfCookieName: 'XSRF-TOKEN', // default // `xsrfHeaderName` is the name of the http header that carries the xsrf token value xsrfHeaderName: 'X-XSRF-TOKEN', // default // `onUploadProgress` allows handling of progress events for uploads onUploadProgress: function (progressEvent) { // Do whatever you want with the native progress event }, // `onDownloadProgress` allows handling of progress events for downloads onDownloadProgress: function (progressEvent) { // Do whatever you want with the native progress event }, // `maxContentLength` defines the max size of the http response content in bytes allowed maxContentLength: 2000, // `validateStatus` defines whether to resolve or reject the promise for a given // HTTP response status code. If `validateStatus` returns `true` (or is set to `null` // or `undefined`), the promise will be resolved; otherwise, the promise will be // rejected. validateStatus: function (status) { return status >= 200 && status < 300; // default }, // `maxRedirects` defines the maximum number of redirects to follow in node.js. // If set to 0, no redirects will be followed. maxRedirects: 5, // default // `socketPath` defines a UNIX Socket to be used in node.js. // e.g. '/var/run/docker.sock' to send requests to the docker daemon. // Only either `socketPath` or `proxy` can be specified. // If both are specified, `socketPath` is used. socketPath: null, // default // `httpAgent` and `httpsAgent` define a custom agent to be used when performing http // and https requests, respectively, in node.js. This allows options to be added like // `keepAlive` that are not enabled by default. httpAgent: new http.Agent({ keepAlive: true }), httpsAgent: new https.Agent({ keepAlive: true }), // 'proxy' defines the hostname and port of the proxy server. // You can also define your proxy using the conventional `http_proxy` and // `https_proxy` environment variables. If you are using environment variables // for your proxy configuration, you can also define a `no_proxy` environment // variable as a comma-separated list of domains that should not be proxied. // Use `false` to disable proxies, ignoring environment variables. // `auth` indicates that HTTP Basic auth should be used to connect to the proxy, and // supplies credentials. // This will set an `Proxy-Authorization` header, overwriting any existing // `Proxy-Authorization` custom headers you have set using `headers`. proxy: { host: '127.0.0.1', port: 9000, auth: { username: 'mikeymike', password: 'rapunz3l' } }, // `cancelToken` specifies a cancel token that can be used to cancel the request // (see Cancellation section below for details) cancelToken: new CancelToken(function (cancel) { }) } ``` ## Response Schema The response for a request contains the following information. ```js { // `data` is the response that was provided by the server data: {}, // `status` is the HTTP status code from the server response status: 200, // `statusText` is the HTTP status message from the server response statusText: 'OK', // `headers` the headers that the server responded with // All header names are lower cased headers: {}, // `config` is the config that was provided to `axios` for the request config: {}, // `request` is the request that generated this response // It is the last ClientRequest instance in node.js (in redirects) // and an XMLHttpRequest instance in the browser request: {} } ``` When using `then`, you will receive the response as follows: ```js axios.get('/user/12345') .then(function (response) { console.log(response.data); console.log(response.status); console.log(response.statusText); console.log(response.headers); console.log(response.config); }); ``` When using `catch`, or passing a [rejection callback](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/then) as second parameter of `then`, the response will be available through the `error` object as explained in the [Handling Errors](#handling-errors) section. ## Config Defaults You can specify config defaults that will be applied to every request. ### Global axios defaults ```js axios.defaults.baseURL = 'https://api.example.com'; axios.defaults.headers.common['Authorization'] = AUTH_TOKEN; axios.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded'; ``` ### Custom instance defaults ```js // Set config defaults when creating the instance const instance = axios.create({ baseURL: 'https://api.example.com' }); // Alter defaults after instance has been created instance.defaults.headers.common['Authorization'] = AUTH_TOKEN; ``` ### Config order of precedence Config will be merged with an order of precedence. The order is library defaults found in [lib/defaults.js](https://github.com/axios/axios/blob/master/lib/defaults.js#L28), then `defaults` property of the instance, and finally `config` argument for the request. The latter will take precedence over the former. Here's an example. ```js // Create an instance using the config defaults provided by the library // At this point the timeout config value is `0` as is the default for the library const instance = axios.create(); // Override timeout default for the library // Now all requests using this instance will wait 2.5 seconds before timing out instance.defaults.timeout = 2500; // Override timeout for this request as it's known to take a long time instance.get('/longRequest', { timeout: 5000 }); ``` ## Interceptors You can intercept requests or responses before they are handled by `then` or `catch`. ```js // Add a request interceptor axios.interceptors.request.use(function (config) { // Do something before request is sent return config; }, function (error) { // Do something with request error return Promise.reject(error); }); // Add a response interceptor axios.interceptors.response.use(function (response) { // Any status code that lie within the range of 2xx cause this function to trigger // Do something with response data return response; }, function (error) { // Any status codes that falls outside the range of 2xx cause this function to trigger // Do something with response error return Promise.reject(error); }); ``` If you need to remove an interceptor later you can. ```js const myInterceptor = axios.interceptors.request.use(function () {/*...*/}); axios.interceptors.request.eject(myInterceptor); ``` You can add interceptors to a custom instance of axios. ```js const instance = axios.create(); instance.interceptors.request.use(function () {/*...*/}); ``` ## Handling Errors ```js axios.get('/user/12345') .catch(function (error) { if (error.response) { // The request was made and the server responded with a status code // that falls out of the range of 2xx console.log(error.response.data); console.log(error.response.status); console.log(error.response.headers); } else if (error.request) { // The request was made but no response was received // `error.request` is an instance of XMLHttpRequest in the browser and an instance of // http.ClientRequest in node.js console.log(error.request); } else { // Something happened in setting up the request that triggered an Error console.log('Error', error.message); } console.log(error.config); }); ``` Using the `validateStatus` config option, you can define HTTP code(s) that should throw an error. ```js axios.get('/user/12345', { validateStatus: function (status) { return status < 500; // Reject only if the status code is greater than or equal to 500 } }) ``` Using `toJSON` you get an object with more information about the HTTP error. ```js axios.get('/user/12345') .catch(function (error) { console.log(error.toJSON()); }); ``` ## Cancellation You can cancel a request using a *cancel token*. > The axios cancel token API is based on the withdrawn [cancelable promises proposal](https://github.com/tc39/proposal-cancelable-promises). You can create a cancel token using the `CancelToken.source` factory as shown below: ```js const CancelToken = axios.CancelToken; const source = CancelToken.source(); axios.get('/user/12345', { cancelToken: source.token }).catch(function (thrown) { if (axios.isCancel(thrown)) { console.log('Request canceled', thrown.message); } else { // handle error } }); axios.post('/user/12345', { name: 'new name' }, { cancelToken: source.token }) // cancel the request (the message parameter is optional) source.cancel('Operation canceled by the user.'); ``` You can also create a cancel token by passing an executor function to the `CancelToken` constructor: ```js const CancelToken = axios.CancelToken; let cancel; axios.get('/user/12345', { cancelToken: new CancelToken(function executor(c) { // An executor function receives a cancel function as a parameter cancel = c; }) }); // cancel the request cancel(); ``` > Note: you can cancel several requests with the same cancel token. ## Using application/x-www-form-urlencoded format By default, axios serializes JavaScript objects to `JSON`. To send data in the `application/x-www-form-urlencoded` format instead, you can use one of the following options. ### Browser In a browser, you can use the [`URLSearchParams`](https://developer.mozilla.org/en-US/docs/Web/API/URLSearchParams) API as follows: ```js const params = new URLSearchParams(); params.append('param1', 'value1'); params.append('param2', 'value2'); axios.post('/foo', params); ``` > Note that `URLSearchParams` is not supported by all browsers (see [caniuse.com](http://www.caniuse.com/#feat=urlsearchparams)), but there is a [polyfill](https://github.com/WebReflection/url-search-params) available (make sure to polyfill the global environment). Alternatively, you can encode data using the [`qs`](https://github.com/ljharb/qs) library: ```js const qs = require('qs'); axios.post('/foo', qs.stringify({ 'bar': 123 })); ``` Or in another way (ES6), ```js import qs from 'qs'; const data = { 'bar': 123 }; const options = { method: 'POST', headers: { 'content-type': 'application/x-www-form-urlencoded' }, data: qs.stringify(data), url, }; axios(options); ``` ### Node.js In node.js, you can use the [`querystring`](https://nodejs.org/api/querystring.html) module as follows: ```js const querystring = require('querystring'); axios.post('http://something.com/', querystring.stringify({ foo: 'bar' })); ``` You can also use the [`qs`](https://github.com/ljharb/qs) library. ###### NOTE The `qs` library is preferable if you need to stringify nested objects, as the `querystring` method has known issues with that use case (https://github.com/nodejs/node-v0.x-archive/issues/1665). ## Semver Until axios reaches a `1.0` release, breaking changes will be released with a new minor version. For example `0.5.1`, and `0.5.4` will have the same API, but `0.6.0` will have breaking changes. ## Promises axios depends on a native ES6 Promise implementation to be [supported](http://caniuse.com/promises). If your environment doesn't support ES6 Promises, you can [polyfill](https://github.com/jakearchibald/es6-promise). ## TypeScript axios includes [TypeScript](http://typescriptlang.org) definitions. ```typescript import axios from 'axios'; axios.get('/user?ID=12345'); ``` ## Resources * [Changelog](https://github.com/axios/axios/blob/master/CHANGELOG.md) * [Upgrade Guide](https://github.com/axios/axios/blob/master/UPGRADE_GUIDE.md) * [Ecosystem](https://github.com/axios/axios/blob/master/ECOSYSTEM.md) * [Contributing Guide](https://github.com/axios/axios/blob/master/CONTRIBUTING.md) * [Code of Conduct](https://github.com/axios/axios/blob/master/CODE_OF_CONDUCT.md) ## Credits axios is heavily inspired by the [$http service](https://docs.angularjs.org/api/ng/service/$http) provided in [Angular](https://angularjs.org/). Ultimately axios is an effort to provide a standalone `$http`-like service for use outside of Angular. ## License [MIT](LICENSE) A JSON with color names and its values. Based on http://dev.w3.org/csswg/css-color/#named-colors. [](https://nodei.co/npm/color-name/) ```js var colors = require('color-name'); colors.red //[255,0,0] ``` <a href="LICENSE"><img src="https://upload.wikimedia.org/wikipedia/commons/0/0c/MIT_logo.svg" width="120"/></a> # Node.js ABI [](https://travis-ci.org/lgeiger/node-abi) [](https://greenkeeper.io/) Get the Node ABI for a given target and runtime, and vice versa. ## Installation ``` npm install node-abi ``` ## Usage ```javascript const nodeAbi = require('node-abi') nodeAbi.getAbi('7.2.0', 'node') // '51' nodeAbi.getAbi('1.4.10', 'electron') // '50' nodeAbi.getTarget('51', 'node') // '7.2.0' nodeAbi.getTarget('50', 'electron') // '1.4.15' nodeAbi.allTargets // [ // { runtime: 'node', target: '0.10.48', abi: '11', lts: false }, // { runtime: 'node', target: '0.12.17', abi: '14', lts: false }, // { runtime: 'node', target: '4.6.1', abi: '46', lts: true }, // { runtime: 'node', target: '5.12.0', abi: '47', lts: false }, // { runtime: 'node', target: '6.9.4', abi: '48', lts: true }, // { runtime: 'node', target: '7.4.0', abi: '51', lts: false }, // { runtime: 'electron', target: '1.0.2', abi: '47', lts: false }, // { runtime: 'electron', target: '1.2.8', abi: '48', lts: false }, // { runtime: 'electron', target: '1.3.13', abi: '49', lts: false }, // { runtime: 'electron', target: '1.4.15', abi: '50', lts: false } // ] nodeAbi.deprecatedTargets nodeAbi.supportedTargets nodeAbi.additionalTargets nodeAbi.futureTargets // ... ``` ## References - https://github.com/lgeiger/electron-abi - https://nodejs.org/en/download/releases/ - https://github.com/nodejs/Release <p align="center"> <a href="http://gulpjs.com"> <img height="257" width="114" src="https://raw.githubusercontent.com/gulpjs/artwork/master/gulp-2x.png"> </a> </p> # v8flags [![NPM version][npm-image]][npm-url] [![Downloads][downloads-image]][npm-url] [![Travis Build Status][travis-image]][travis-url] [![AppVeyor Build Status][appveyor-image]][appveyor-url] [![Coveralls Status][coveralls-image]][coveralls-url] [![Gitter chat][gitter-image]][gitter-url] Get available v8 and Node.js flags. ## Usage ```js const v8flags = require('v8flags'); v8flags(function(err, results) { console.log(results); // [ '--use_strict', // '--es5_readonly', // '--es52_globals', // '--harmony_typeof', // '--harmony_scoping', // '--harmony_modules', // '--harmony_proxies', // '--harmony_collections', // '--harmony', // ... }); ``` ## API ### `v8flags(cb)` Finds the available flags and calls the passed callback with any errors and an array of flag results. ### `v8flags.configfile` The name of the cache file for flags. ### `v8flags.configPath` The filepath location of the `configfile` above. ## License MIT [downloads-image]: http://img.shields.io/npm/dm/v8flags.svg [npm-url]: https://www.npmjs.com/package/v8flags [npm-image]: http://img.shields.io/npm/v/v8flags.svg [travis-url]: https://travis-ci.org/gulpjs/v8flags [travis-image]: http://img.shields.io/travis/gulpjs/v8flags.svg?label=travis-ci [appveyor-url]: https://ci.appveyor.com/project/gulpjs/v8flags [appveyor-image]: https://img.shields.io/appveyor/ci/gulpjs/v8flags.svg?label=appveyor [coveralls-url]: https://coveralls.io/r/gulpjs/v8flags [coveralls-image]: http://img.shields.io/coveralls/gulpjs/v8flags/master.svg [gitter-url]: https://gitter.im/gulpjs/gulp [gitter-image]: https://badges.gitter.im/gulpjs/gulp.svg # near-sdk-as Collection of packages used in developing NEAR smart contracts in AssemblyScript including: - [`runtime library`](https://github.com/near/near-sdk-as/tree/master/sdk-core) - AssemblyScript near runtime library - [`bindgen`](https://github.com/near/near-sdk-as/tree/master/bindgen) - AssemblyScript transformer that adds the bindings needed to (de)serialize input and outputs. - [`near-mock-vm`](https://github.com/near/near-sdk-as/tree/master/near-mock-vm) - Core of the NEAR VM compiled to WebAssembly used for running unit tests. - [`@as-pect/cli`](https://github.com/jtenner/as-pect) - AssemblyScript testing framework similar to jest. ## To Install ```sh yarn add -D near-sdk-as ``` ## Project Setup To set up a AS project to compile with the sdk add the following `asconfig.json` file to the root: ```json { "extends": "near-sdk-as/asconfig.json" } ``` Then if your main file is `assembly/index.ts`, then the project can be build with [`asbuild`](https://github.com/willemneal/asbuild): ```sh yarn asb ``` will create a release build and place it `./build/release/<name-in-package.json>.wasm` ```sh yarn asb --target debug ``` will create a debug build and place it in `./build/debug/..` ## Testing ### Unit Testing See the [sdk's as-pect tests for an example](./sdk/assembly/__tests__) of creating unit tests. Must be ending in `.spec.ts` in a `assembly/__tests__`. ## License `near-sdk-as` is distributed under the terms of both the MIT license and the Apache License (Version 2.0). See [LICENSE-MIT](LICENSE-MIT) and [LICENSE-APACHE](LICENSE-APACHE) for details. # mime-db [![NPM Version][npm-version-image]][npm-url] [![NPM Downloads][npm-downloads-image]][npm-url] [![Node.js Version][node-image]][node-url] [![Build Status][ci-image]][ci-url] [![Coverage Status][coveralls-image]][coveralls-url] This is a large database of mime types and information about them. It consists of a single, public JSON file and does not include any logic, allowing it to remain as un-opinionated as possible with an API. It aggregates data from the following sources: - http://www.iana.org/assignments/media-types/media-types.xhtml - http://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/mime.types - http://hg.nginx.org/nginx/raw-file/default/conf/mime.types ## Installation ```bash npm install mime-db ``` ### Database Download If you're crazy enough to use this in the browser, you can just grab the JSON file using [jsDelivr](https://www.jsdelivr.com/). It is recommended to replace `master` with [a release tag](https://github.com/jshttp/mime-db/tags) as the JSON format may change in the future. ``` https://cdn.jsdelivr.net/gh/jshttp/mime-db@master/db.json ``` ## Usage ```js var db = require('mime-db') // grab data on .js files var data = db['application/javascript'] ``` ## Data Structure The JSON file is a map lookup for lowercased mime types. Each mime type has the following properties: - `.source` - where the mime type is defined. If not set, it's probably a custom media type. - `apache` - [Apache common media types](http://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/mime.types) - `iana` - [IANA-defined media types](http://www.iana.org/assignments/media-types/media-types.xhtml) - `nginx` - [nginx media types](http://hg.nginx.org/nginx/raw-file/default/conf/mime.types) - `.extensions[]` - known extensions associated with this mime type. - `.compressible` - whether a file of this type can be gzipped. - `.charset` - the default charset associated with this type, if any. If unknown, every property could be `undefined`. ## Contributing To edit the database, only make PRs against `src/custom-types.json` or `src/custom-suffix.json`. The `src/custom-types.json` file is a JSON object with the MIME type as the keys and the values being an object with the following keys: - `compressible` - leave out if you don't know, otherwise `true`/`false` to indicate whether the data represented by the type is typically compressible. - `extensions` - include an array of file extensions that are associated with the type. - `notes` - human-readable notes about the type, typically what the type is. - `sources` - include an array of URLs of where the MIME type and the associated extensions are sourced from. This needs to be a [primary source](https://en.wikipedia.org/wiki/Primary_source); links to type aggregating sites and Wikipedia are _not acceptable_. To update the build, run `npm run build`. ### Adding Custom Media Types The best way to get new media types included in this library is to register them with the IANA. The community registration procedure is outlined in [RFC 6838 section 5](http://tools.ietf.org/html/rfc6838#section-5). Types registered with the IANA are automatically pulled into this library. If that is not possible / feasible, they can be added directly here as a "custom" type. To do this, it is required to have a primary source that definitively lists the media type. If an extension is going to be listed as associateed with this media type, the source must definitively link the media type and extension as well. [ci-image]: https://badgen.net/github/checks/jshttp/mime-db/master?label=ci [ci-url]: https://github.com/jshttp/mime-db/actions?query=workflow%3Aci [coveralls-image]: https://badgen.net/coveralls/c/github/jshttp/mime-db/master [coveralls-url]: https://coveralls.io/r/jshttp/mime-db?branch=master [node-image]: https://badgen.net/npm/node/mime-db [node-url]: https://nodejs.org/en/download [npm-downloads-image]: https://badgen.net/npm/dm/mime-db [npm-url]: https://npmjs.org/package/mime-db [npm-version-image]: https://badgen.net/npm/v/mime-db An ini format parser and serializer for node. Sections are treated as nested objects. Items before the first heading are saved on the object directly. ## Usage Consider an ini-file `config.ini` that looks like this: ; this comment is being ignored scope = global [database] user = dbuser password = dbpassword database = use_this_database [paths.default] datadir = /var/lib/data array[] = first value array[] = second value array[] = third value You can read, manipulate and write the ini-file like so: var fs = require('fs') , ini = require('ini') var config = ini.parse(fs.readFileSync('./config.ini', 'utf-8')) config.scope = 'local' config.database.database = 'use_another_database' config.paths.default.tmpdir = '/tmp' delete config.paths.default.datadir config.paths.default.array.push('fourth value') fs.writeFileSync('./config_modified.ini', ini.stringify(config, { section: 'section' })) This will result in a file called `config_modified.ini` being written to the filesystem with the following content: [section] scope=local [section.database] user=dbuser password=dbpassword database=use_another_database [section.paths.default] tmpdir=/tmp array[]=first value array[]=second value array[]=third value array[]=fourth value ## API ### decode(inistring) Decode the ini-style formatted `inistring` into a nested object. ### parse(inistring) Alias for `decode(inistring)` ### encode(object, [options]) Encode the object `object` into an ini-style formatted string. If the optional parameter `section` is given, then all top-level properties of the object are put into this section and the `section`-string is prepended to all sub-sections, see the usage example above. The `options` object may contain the following: * `section` A string which will be the first `section` in the encoded ini data. Defaults to none. * `whitespace` Boolean to specify whether to put whitespace around the `=` character. By default, whitespace is omitted, to be friendly to some persnickety old parsers that don't tolerate it well. But some find that it's more human-readable and pretty with the whitespace. For backwards compatibility reasons, if a `string` options is passed in, then it is assumed to be the `section` value. ### stringify(object, [options]) Alias for `encode(object, [options])` ### safe(val) Escapes the string `val` such that it is safe to be used as a key or value in an ini-file. Basically escapes quotes. For example ini.safe('"unsafe string"') would result in "\"unsafe string\"" ### unsafe(val) Unescapes the string `val` # Punycode.js [](https://travis-ci.org/bestiejs/punycode.js) [](https://codecov.io/gh/bestiejs/punycode.js) [](https://gemnasium.com/bestiejs/punycode.js) Punycode.js is a robust Punycode converter that fully complies to [RFC 3492](https://tools.ietf.org/html/rfc3492) and [RFC 5891](https://tools.ietf.org/html/rfc5891). This JavaScript library is the result of comparing, optimizing and documenting different open-source implementations of the Punycode algorithm: * [The C example code from RFC 3492](https://tools.ietf.org/html/rfc3492#appendix-C) * [`punycode.c` by _Markus W. Scherer_ (IBM)](http://opensource.apple.com/source/ICU/ICU-400.42/icuSources/common/punycode.c) * [`punycode.c` by _Ben Noordhuis_](https://github.com/bnoordhuis/punycode/blob/master/punycode.c) * [JavaScript implementation by _some_](http://stackoverflow.com/questions/183485/can-anyone-recommend-a-good-free-javascript-for-punycode-to-unicode-conversion/301287#301287) * [`punycode.js` by _Ben Noordhuis_](https://github.com/joyent/node/blob/426298c8c1c0d5b5224ac3658c41e7c2a3fe9377/lib/punycode.js) (note: [not fully compliant](https://github.com/joyent/node/issues/2072)) This project was [bundled](https://github.com/joyent/node/blob/master/lib/punycode.js) with Node.js from [v0.6.2+](https://github.com/joyent/node/compare/975f1930b1...61e796decc) until [v7](https://github.com/nodejs/node/pull/7941) (soft-deprecated). The current version supports recent versions of Node.js only. It provides a CommonJS module and an ES6 module. For the old version that offers the same functionality with broader support, including Rhino, Ringo, Narwhal, and web browsers, see [v1.4.1](https://github.com/bestiejs/punycode.js/releases/tag/v1.4.1). ## Installation Via [npm](https://www.npmjs.com/): ```bash npm install punycode --save ``` In [Node.js](https://nodejs.org/): ```js const punycode = require('punycode'); ``` ## API ### `punycode.decode(string)` Converts a Punycode string of ASCII symbols to a string of Unicode symbols. ```js // decode domain name parts punycode.decode('maana-pta'); // 'mañana' punycode.decode('--dqo34k'); // '☃-⌘' ``` ### `punycode.encode(string)` Converts a string of Unicode symbols to a Punycode string of ASCII symbols. ```js // encode domain name parts punycode.encode('mañana'); // 'maana-pta' punycode.encode('☃-⌘'); // '--dqo34k' ``` ### `punycode.toUnicode(input)` Converts a Punycode string representing a domain name or an email address to Unicode. Only the Punycoded parts of the input will be converted, i.e. it doesn’t matter if you call it on a string that has already been converted to Unicode. ```js // decode domain names punycode.toUnicode('xn--maana-pta.com'); // → 'mañana.com' punycode.toUnicode('xn----dqo34k.com'); // → '☃-⌘.com' // decode email addresses punycode.toUnicode('джумла@xn--p-8sbkgc5ag7bhce.xn--ba-lmcq'); // → 'джумла@джpумлатест.bрфa' ``` ### `punycode.toASCII(input)` Converts a lowercased Unicode string representing a domain name or an email address to Punycode. Only the non-ASCII parts of the input will be converted, i.e. it doesn’t matter if you call it with a domain that’s already in ASCII. ```js // encode domain names punycode.toASCII('mañana.com'); // → 'xn--maana-pta.com' punycode.toASCII('☃-⌘.com'); // → 'xn----dqo34k.com' // encode email addresses punycode.toASCII('джумла@джpумлатест.bрфa'); // → 'джумла@xn--p-8sbkgc5ag7bhce.xn--ba-lmcq' ``` ### `punycode.ucs2` #### `punycode.ucs2.decode(string)` Creates an array containing the numeric code point values of each Unicode symbol in the string. While [JavaScript uses UCS-2 internally](https://mathiasbynens.be/notes/javascript-encoding), this function will convert a pair of surrogate halves (each of which UCS-2 exposes as separate characters) into a single code point, matching UTF-16. ```js punycode.ucs2.decode('abc'); // → [0x61, 0x62, 0x63] // surrogate pair for U+1D306 TETRAGRAM FOR CENTRE: punycode.ucs2.decode('\uD834\uDF06'); // → [0x1D306] ``` #### `punycode.ucs2.encode(codePoints)` Creates a string based on an array of numeric code point values. ```js punycode.ucs2.encode([0x61, 0x62, 0x63]); // → 'abc' punycode.ucs2.encode([0x1D306]); // → '\uD834\uDF06' ``` ### `punycode.version` A string representing the current Punycode.js version number. ## Author | [](https://twitter.com/mathias "Follow @mathias on Twitter") | |---| | [Mathias Bynens](https://mathiasbynens.be/) | ## License Punycode.js is available under the [MIT](https://mths.be/mit) license. # is-typedarray [](http://github.com/badges/stability-badges) Detect whether or not an object is a [Typed Array](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Typed_arrays). ## Usage [](https://nodei.co/npm/is-typedarray/) ### isTypedArray(array) Returns `true` when array is a Typed Array, and `false` when it is not. ## License MIT. See [LICENSE.md](http://github.com/hughsk/is-typedarray/blob/master/LICENSE.md) for details. # cliui  [](https://www.npmjs.com/package/cliui) [](https://conventionalcommits.org)  easily create complex multi-column command-line-interfaces. ## Example ```js const ui = require('cliui')() ui.div('Usage: $0 [command] [options]') ui.div({ text: 'Options:', padding: [2, 0, 1, 0] }) ui.div( { text: "-f, --file", width: 20, padding: [0, 4, 0, 4] }, { text: "the file to load." + chalk.green("(if this description is long it wraps).") , width: 20 }, { text: chalk.red("[required]"), align: 'right' } ) console.log(ui.toString()) ``` ## Deno/ESM Support As of `v7` `cliui` supports [Deno](https://github.com/denoland/deno) and [ESM](https://nodejs.org/api/esm.html#esm_ecmascript_modules): ```typescript import cliui from "https://deno.land/x/cliui/deno.ts"; const ui = cliui({}) ui.div('Usage: $0 [command] [options]') ui.div({ text: 'Options:', padding: [2, 0, 1, 0] }) ui.div({ text: "-f, --file", width: 20, padding: [0, 4, 0, 4] }) console.log(ui.toString()) ``` <img width="500" src="screenshot.png"> ## Layout DSL cliui exposes a simple layout DSL: If you create a single `ui.div`, passing a string rather than an object: * `\n`: characters will be interpreted as new rows. * `\t`: characters will be interpreted as new columns. * `\s`: characters will be interpreted as padding. **as an example...** ```js var ui = require('./')({ width: 60 }) ui.div( 'Usage: node ./bin/foo.js\n' + ' <regex>\t provide a regex\n' + ' <glob>\t provide a glob\t [required]' ) console.log(ui.toString()) ``` **will output:** ```shell Usage: node ./bin/foo.js <regex> provide a regex <glob> provide a glob [required] ``` ## Methods ```js cliui = require('cliui') ``` ### cliui({width: integer}) Specify the maximum width of the UI being generated. If no width is provided, cliui will try to get the current window's width and use it, and if that doesn't work, width will be set to `80`. ### cliui({wrap: boolean}) Enable or disable the wrapping of text in a column. ### cliui.div(column, column, column) Create a row with any number of columns, a column can either be a string, or an object with the following options: * **text:** some text to place in the column. * **width:** the width of a column. * **align:** alignment, `right` or `center`. * **padding:** `[top, right, bottom, left]`. * **border:** should a border be placed around the div? ### cliui.span(column, column, column) Similar to `div`, except the next row will be appended without a new line being created. ### cliui.resetOutput() Resets the UI elements of the current cliui instance, maintaining the values set for `width` and `wrap`. # flatted [](https://www.npmjs.com/package/flatted) [](https://coveralls.io/github/WebReflection/flatted?branch=main) [](https://travis-ci.com/WebReflection/flatted) [](https://opensource.org/licenses/ISC)   <sup>**Social Media Photo by [Matt Seymour](https://unsplash.com/@mattseymour) on [Unsplash](https://unsplash.com/)**</sup> ## Announcement 📣 There is a standard approach to recursion and more data-types than what JSON allows, and it's part of the [Structured Clone polyfill](https://github.com/ungap/structured-clone/#readme). Beside acting as a polyfill, its `@ungap/structured-clone/json` export provides both `stringify` and `parse`, and it's been tested for being faster than *flatted*, but its produced output is also smaller than *flatted* in general. The *@ungap/structured-clone* module is, in short, a drop in replacement for *flatted*, but it's not compatible with *flatted* specialized syntax. However, if recursion, as well as more data-types, are what you are after, or interesting for your projects/use cases, consider switching to this new module whenever you can 👍 - - - A super light (0.5K) and fast circular JSON parser, directly from the creator of [CircularJSON](https://github.com/WebReflection/circular-json/#circularjson). Now available also for **[PHP](./php/flatted.php)**. ```js npm i flatted ``` Usable via [CDN](https://unpkg.com/flatted) or as regular module. ```js // ESM import {parse, stringify, toJSON, fromJSON} from 'flatted'; // CJS const {parse, stringify, toJSON, fromJSON} = require('flatted'); const a = [{}]; a[0].a = a; a.push(a); stringify(a); // [["1","0"],{"a":"0"}] ``` ## toJSON and fromJSON If you'd like to implicitly survive JSON serialization, these two helpers helps: ```js import {toJSON, fromJSON} from 'flatted'; class RecursiveMap extends Map { static fromJSON(any) { return new this(fromJSON(any)); } toJSON() { return toJSON([...this.entries()]); } } const recursive = new RecursiveMap; const same = {}; same.same = same; recursive.set('same', same); const asString = JSON.stringify(recursive); const asMap = RecursiveMap.fromJSON(JSON.parse(asString)); asMap.get('same') === asMap.get('same').same; // true ``` ## Flatted VS JSON As it is for every other specialized format capable of serializing and deserializing circular data, you should never `JSON.parse(Flatted.stringify(data))`, and you should never `Flatted.parse(JSON.stringify(data))`. The only way this could work is to `Flatted.parse(Flatted.stringify(data))`, as it is also for _CircularJSON_ or any other, otherwise there's no granted data integrity. Also please note this project serializes and deserializes only data compatible with JSON, so that sockets, or anything else with internal classes different from those allowed by JSON standard, won't be serialized and unserialized as expected. ### New in V1: Exact same JSON API * Added a [reviver](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/parse#Syntax) parameter to `.parse(string, reviver)` and revive your own objects. * Added a [replacer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify#Syntax) and a `space` parameter to `.stringify(object, replacer, space)` for feature parity with JSON signature. ### Compatibility All ECMAScript engines compatible with `Map`, `Set`, `Object.keys`, and `Array.prototype.reduce` will work, even if polyfilled. ### How does it work ? While stringifying, all Objects, including Arrays, and strings, are flattened out and replaced as unique index. `*` Once parsed, all indexes will be replaced through the flattened collection. <sup><sub>`*` represented as string to avoid conflicts with numbers</sub></sup> ```js // logic example var a = [{one: 1}, {two: '2'}]; a[0].a = a; // a is the main object, will be at index '0' // {one: 1} is the second object, index '1' // {two: '2'} the third, in '2', and it has a string // which will be found at index '3' Flatted.stringify(a); // [["1","2"],{"one":1,"a":"0"},{"two":"3"},"2"] // a[one,two] {one: 1, a} {two: '2'} '2' ``` # signal-exit [](https://travis-ci.org/tapjs/signal-exit) [](https://coveralls.io/r/tapjs/signal-exit?branch=master) [](https://www.npmjs.com/package/signal-exit) [](https://github.com/conventional-changelog/standard-version) When you want to fire an event no matter how a process exits: * reaching the end of execution. * explicitly having `process.exit(code)` called. * having `process.kill(pid, sig)` called. * receiving a fatal signal from outside the process Use `signal-exit`. ```js var onExit = require('signal-exit') onExit(function (code, signal) { console.log('process exited!') }) ``` ## API `var remove = onExit(function (code, signal) {}, options)` The return value of the function is a function that will remove the handler. Note that the function *only* fires for signals if the signal would cause the process to exit. That is, there are no other listeners, and it is a fatal signal. ## Options * `alwaysLast`: Run this handler after any other signal or exit handlers. This causes `process.emit` to be monkeypatched. # inflight Add callbacks to requests in flight to avoid async duplication ## USAGE ```javascript var inflight = require('inflight') // some request that does some stuff function req(key, callback) { // key is any random string. like a url or filename or whatever. // // will return either a falsey value, indicating that the // request for this key is already in flight, or a new callback // which when called will call all callbacks passed to inflightk // with the same key callback = inflight(key, callback) // If we got a falsey value back, then there's already a req going if (!callback) return // this is where you'd fetch the url or whatever // callback is also once()-ified, so it can safely be assigned // to multiple events etc. First call wins. setTimeout(function() { callback(null, key) }, 100) } // only assigns a single setTimeout // when it dings, all cbs get called req('foo', cb1) req('foo', cb2) req('foo', cb3) req('foo', cb4) ``` # typedarray-to-buffer [![travis][travis-image]][travis-url] [![npm][npm-image]][npm-url] [![downloads][downloads-image]][downloads-url] [![javascript style guide][standard-image]][standard-url] [travis-image]: https://img.shields.io/travis/feross/typedarray-to-buffer/master.svg [travis-url]: https://travis-ci.org/feross/typedarray-to-buffer [npm-image]: https://img.shields.io/npm/v/typedarray-to-buffer.svg [npm-url]: https://npmjs.org/package/typedarray-to-buffer [downloads-image]: https://img.shields.io/npm/dm/typedarray-to-buffer.svg [downloads-url]: https://npmjs.org/package/typedarray-to-buffer [standard-image]: https://img.shields.io/badge/code_style-standard-brightgreen.svg [standard-url]: https://standardjs.com #### Convert a typed array to a [Buffer](https://github.com/feross/buffer) without a copy. [![saucelabs][saucelabs-image]][saucelabs-url] [saucelabs-image]: https://saucelabs.com/browser-matrix/typedarray-to-buffer.svg [saucelabs-url]: https://saucelabs.com/u/typedarray-to-buffer Say you're using the ['buffer'](https://github.com/feross/buffer) module on npm, or [browserify](http://browserify.org/) and you're working with lots of binary data. Unfortunately, sometimes the browser or someone else's API gives you a typed array like `Uint8Array` to work with and you need to convert it to a `Buffer`. What do you do? Of course: `Buffer.from(uint8array)` But, alas, every time you do `Buffer.from(uint8array)` **the entire array gets copied**. The `Buffer` constructor does a copy; this is defined by the [node docs](http://nodejs.org/api/buffer.html) and the 'buffer' module matches the node API exactly. So, how can we avoid this expensive copy in [performance critical applications](https://github.com/feross/buffer/issues/22)? ***Simply use this module, of course!*** If you have an `ArrayBuffer`, you don't need this module, because `Buffer.from(arrayBuffer)` [is already efficient](https://nodejs.org/api/buffer.html#buffer_class_method_buffer_from_arraybuffer_byteoffset_length). ## install ```bash npm install typedarray-to-buffer ``` ## usage To convert a typed array to a `Buffer` **without a copy**, do this: ```js var toBuffer = require('typedarray-to-buffer') var arr = new Uint8Array([1, 2, 3]) arr = toBuffer(arr) // arr is a buffer now! arr.toString() // '\u0001\u0002\u0003' arr.readUInt16BE(0) // 258 ``` ## how it works If the browser supports typed arrays, then `toBuffer` will **augment the typed array** you pass in with the `Buffer` methods and return it. See [how does Buffer work?](https://github.com/feross/buffer#how-does-it-work) for more about how augmentation works. This module uses the typed array's underlying `ArrayBuffer` to back the new `Buffer`. This respects the "view" on the `ArrayBuffer`, i.e. `byteOffset` and `byteLength`. In other words, if you do `toBuffer(new Uint32Array([1, 2, 3]))`, then the new `Buffer` will contain `[1, 0, 0, 0, 2, 0, 0, 0, 3, 0, 0, 0]`, **not** `[1, 2, 3]`. And it still doesn't require a copy. If the browser doesn't support typed arrays, then `toBuffer` will create a new `Buffer` object, copy the data into it, and return it. There's no simple performance optimization we can do for old browsers. Oh well. If this module is used in node, then it will just call `Buffer.from`. This is just for the convenience of modules that work in both node and the browser. ## license MIT. Copyright (C) [Feross Aboukhadijeh](http://feross.org). The AssemblyScript Runtime ========================== The runtime provides the functionality necessary to dynamically allocate and deallocate memory of objects, arrays and buffers, as well as collect garbage that is no longer used. The current implementation is either a Two-Color Mark & Sweep (TCMS) garbage collector that must be called manually when the execution stack is unwound or an Incremental Tri-Color Mark & Sweep (ITCMS) garbage collector that is fully automated with a shadow stack, implemented on top of a Two-Level Segregate Fit (TLSF) memory manager. It's not designed to be the fastest of its kind, but intentionally focuses on simplicity and ease of integration until we can replace it with the real deal, i.e. Wasm GC. Interface --------- ### Garbage collector / `--exportRuntime` * **__new**(size: `usize`, id: `u32` = 0): `usize`<br /> Dynamically allocates a GC object of at least the specified size and returns its address. Alignment is guaranteed to be 16 bytes to fit up to v128 values naturally. GC-allocated objects cannot be used with `__realloc` and `__free`. * **__pin**(ptr: `usize`): `usize`<br /> Pins the object pointed to by `ptr` externally so it and its directly reachable members and indirectly reachable objects do not become garbage collected. * **__unpin**(ptr: `usize`): `void`<br /> Unpins the object pointed to by `ptr` externally so it can become garbage collected. * **__collect**(): `void`<br /> Performs a full garbage collection. ### Internals * **__alloc**(size: `usize`): `usize`<br /> Dynamically allocates a chunk of memory of at least the specified size and returns its address. Alignment is guaranteed to be 16 bytes to fit up to v128 values naturally. * **__realloc**(ptr: `usize`, size: `usize`): `usize`<br /> Dynamically changes the size of a chunk of memory, possibly moving it to a new address. * **__free**(ptr: `usize`): `void`<br /> Frees a dynamically allocated chunk of memory by its address. * **__renew**(ptr: `usize`, size: `usize`): `usize`<br /> Like `__realloc`, but for `__new`ed GC objects. * **__link**(parentPtr: `usize`, childPtr: `usize`, expectMultiple: `bool`): `void`<br /> Introduces a link from a parent object to a child object, i.e. upon `parent.field = child`. * **__visit**(ptr: `usize`, cookie: `u32`): `void`<br /> Concrete visitor implementation called during traversal. Cookie can be used to indicate one of multiple operations. * **__visit_globals**(cookie: `u32`): `void`<br /> Calls `__visit` on each global that is of a managed type. * **__visit_members**(ptr: `usize`, cookie: `u32`): `void`<br /> Calls `__visit` on each member of the object pointed to by `ptr`. * **__typeinfo**(id: `u32`): `RTTIFlags`<br /> Obtains the runtime type information for objects with the specified runtime id. Runtime type information is a set of flags indicating whether a type is managed, an array or similar, and what the relevant alignments when creating an instance externally are etc. * **__instanceof**(ptr: `usize`, classId: `u32`): `bool`<br /> Tests if the object pointed to by `ptr` is an instance of the specified class id. ITCMS / `--runtime incremental` ----- The Incremental Tri-Color Mark & Sweep garbage collector maintains a separate shadow stack of managed values in the background to achieve full automation. Maintaining another stack introduces some overhead compared to the simpler Two-Color Mark & Sweep garbage collector, but makes it independent of whether the execution stack is unwound or not when it is invoked, so the garbage collector can run interleaved with the program. There are several constants one can experiment with to tweak ITCMS's automation: * `--use ASC_GC_GRANULARITY=1024`<br /> How often to interrupt. The default of 1024 means "interrupt each 1024 bytes allocated". * `--use ASC_GC_STEPFACTOR=200`<br /> How long to interrupt. The default of 200% means "run at double the speed of allocations". * `--use ASC_GC_IDLEFACTOR=200`<br /> How long to idle. The default of 200% means "wait for memory to double before kicking in again". * `--use ASC_GC_MARKCOST=1`<br /> How costly it is to mark one object. Budget per interrupt is `GRANULARITY * STEPFACTOR / 100`. * `--use ASC_GC_SWEEPCOST=10`<br /> How costly it is to sweep one object. Budget per interrupt is `GRANULARITY * STEPFACTOR / 100`. TCMS / `--runtime minimal` ---- If automation and low pause times aren't strictly necessary, using the Two-Color Mark & Sweep garbage collector instead by invoking collection manually at appropriate times when the execution stack is unwound may be more performant as it simpler and has less overhead. The execution stack is typically unwound when invoking the collector externally, at a place that is not indirectly called from Wasm. STUB / `--runtime stub` ---- The stub is a maximally minimal runtime substitute, consisting of a simple and fast bump allocator with no means of freeing up memory again, except when freeing the respective most recently allocated object on top of the bump. Useful where memory is not a concern, and/or where it is sufficient to destroy the whole module including any potential garbage after execution. See also: [Garbage collection](https://www.assemblyscript.org/garbage-collection.html) # sprintf.js **sprintf.js** is a complete open source JavaScript sprintf implementation for the *browser* and *node.js*. Its prototype is simple: string sprintf(string format , [mixed arg1 [, mixed arg2 [ ,...]]]) The placeholders in the format string are marked by `%` and are followed by one or more of these elements, in this order: * An optional number followed by a `$` sign that selects which argument index to use for the value. If not specified, arguments will be placed in the same order as the placeholders in the input string. * An optional `+` sign that forces to preceed the result with a plus or minus sign on numeric values. By default, only the `-` sign is used on negative numbers. * An optional padding specifier that says what character to use for padding (if specified). Possible values are `0` or any other character precedeed by a `'` (single quote). The default is to pad with *spaces*. * An optional `-` sign, that causes sprintf to left-align the result of this placeholder. The default is to right-align the result. * An optional number, that says how many characters the result should have. If the value to be returned is shorter than this number, the result will be padded. When used with the `j` (JSON) type specifier, the padding length specifies the tab size used for indentation. * An optional precision modifier, consisting of a `.` (dot) followed by a number, that says how many digits should be displayed for floating point numbers. When used with the `g` type specifier, it specifies the number of significant digits. When used on a string, it causes the result to be truncated. * A type specifier that can be any of: * `%` — yields a literal `%` character * `b` — yields an integer as a binary number * `c` — yields an integer as the character with that ASCII value * `d` or `i` — yields an integer as a signed decimal number * `e` — yields a float using scientific notation * `u` — yields an integer as an unsigned decimal number * `f` — yields a float as is; see notes on precision above * `g` — yields a float as is; see notes on precision above * `o` — yields an integer as an octal number * `s` — yields a string as is * `x` — yields an integer as a hexadecimal number (lower-case) * `X` — yields an integer as a hexadecimal number (upper-case) * `j` — yields a JavaScript object or array as a JSON encoded string ## JavaScript `vsprintf` `vsprintf` is the same as `sprintf` except that it accepts an array of arguments, rather than a variable number of arguments: vsprintf("The first 4 letters of the english alphabet are: %s, %s, %s and %s", ["a", "b", "c", "d"]) ## Argument swapping You can also swap the arguments. That is, the order of the placeholders doesn't have to match the order of the arguments. You can do that by simply indicating in the format string which arguments the placeholders refer to: sprintf("%2$s %3$s a %1$s", "cracker", "Polly", "wants") And, of course, you can repeat the placeholders without having to increase the number of arguments. ## Named arguments Format strings may contain replacement fields rather than positional placeholders. Instead of referring to a certain argument, you can now refer to a certain key within an object. Replacement fields are surrounded by rounded parentheses - `(` and `)` - and begin with a keyword that refers to a key: var user = { name: "Dolly" } sprintf("Hello %(name)s", user) // Hello Dolly Keywords in replacement fields can be optionally followed by any number of keywords or indexes: var users = [ {name: "Dolly"}, {name: "Molly"}, {name: "Polly"} ] sprintf("Hello %(users[0].name)s, %(users[1].name)s and %(users[2].name)s", {users: users}) // Hello Dolly, Molly and Polly Note: mixing positional and named placeholders is not (yet) supported ## Computed values You can pass in a function as a dynamic value and it will be invoked (with no arguments) in order to compute the value on-the-fly. sprintf("Current timestamp: %d", Date.now) // Current timestamp: 1398005382890 sprintf("Current date and time: %s", function() { return new Date().toString() }) # AngularJS You can now use `sprintf` and `vsprintf` (also aliased as `fmt` and `vfmt` respectively) in your AngularJS projects. See `demo/`. # Installation ## Via Bower bower install sprintf ## Or as a node.js module npm install sprintf-js ### Usage var sprintf = require("sprintf-js").sprintf, vsprintf = require("sprintf-js").vsprintf sprintf("%2$s %3$s a %1$s", "cracker", "Polly", "wants") vsprintf("The first 4 letters of the english alphabet are: %s, %s, %s and %s", ["a", "b", "c", "d"]) # License **sprintf.js** is licensed under the terms of the 3-clause BSD license. # randexp.js randexp will generate a random string that matches a given RegExp Javascript object. [](http://travis-ci.org/fent/randexp.js) [](https://david-dm.org/fent/randexp.js) [](https://codecov.io/gh/fent/randexp.js) # Usage ```js var RandExp = require('randexp'); // supports grouping and piping new RandExp(/hello+ (world|to you)/).gen(); // => hellooooooooooooooooooo world // sets and ranges and references new RandExp(/<([a-z]\w{0,20})>foo<\1>/).gen(); // => <m5xhdg>foo<m5xhdg> // wildcard new RandExp(/random stuff: .+/).gen(); // => random stuff: l3m;Hf9XYbI [YPaxV>U*4-_F!WXQh9>;rH3i l!8.zoh?[utt1OWFQrE ^~8zEQm]~tK // ignore case new RandExp(/xxx xtreme dragon warrior xxx/i).gen(); // => xxx xtReME dRAGON warRiOR xXX // dynamic regexp shortcut new RandExp('(sun|mon|tue|wednes|thurs|fri|satur)day', 'i'); // is the same as new RandExp(new RegExp('(sun|mon|tue|wednes|thurs|fri|satur)day', 'i')); ``` If you're only going to use `gen()` once with a regexp and want slightly shorter syntax for it ```js var randexp = require('randexp').randexp; randexp(/[1-6]/); // 4 randexp('great|good( job)?|excellent'); // great ``` If you miss the old syntax ```js require('randexp').sugar(); /yes|no|maybe|i don't know/.gen(); // maybe ``` # Motivation Regular expressions are used in every language, every programmer is familiar with them. Regex can be used to easily express complex strings. What better way to generate a random string than with a language you can use to express the string you want? Thanks to [String-Random](http://search.cpan.org/~steve/String-Random-0.22/lib/String/Random.pm) for giving me the idea to make this in the first place and [randexp](https://github.com/benburkert/randexp) for the sweet `.gen()` syntax. # Default Range The default generated character range includes printable ASCII. In order to add or remove characters, a `defaultRange` attribute is exposed. you can `subtract(from, to)` and `add(from, to)` ```js var randexp = new RandExp(/random stuff: .+/); randexp.defaultRange.subtract(32, 126); randexp.defaultRange.add(0, 65535); randexp.gen(); // => random stuff: 湐箻ໜ䫴␩⶛㳸長���邓蕲뤀쑡篷皇硬剈궦佔칗븛뀃匫鴔事좍ﯣ⭼ꝏ䭍詳蒂䥂뽭 ``` # Custom PRNG The default randomness is provided by `Math.random()`. If you need to use a seedable or cryptographic PRNG, you can override `RandExp.prototype.randInt` or `randexp.randInt` (where `randexp` is an instance of `RandExp`). `randInt(from, to)` accepts an inclusive range and returns a randomly selected number within that range. # Infinite Repetitionals Repetitional tokens such as `*`, `+`, and `{3,}` have an infinite max range. In this case, randexp looks at its min and adds 100 to it to get a useable max value. If you want to use another int other than 100 you can change the `max` property in `RandExp.prototype` or the RandExp instance. ```js var randexp = new RandExp(/no{1,}/); randexp.max = 1000000; ``` With `RandExp.sugar()` ```js var regexp = /(hi)*/; regexp.max = 1000000; ``` # Bad Regular Expressions There are some regular expressions which can never match any string. * Ones with badly placed positionals such as `/a^/` and `/$c/m`. Randexp will ignore positional tokens. * Back references to non-existing groups like `/(a)\1\2/`. Randexp will ignore those references, returning an empty string for them. If the group exists only after the reference is used such as in `/\1 (hey)/`, it will too be ignored. * Custom negated character sets with two sets inside that cancel each other out. Example: `/[^\w\W]/`. If you give this to randexp, it will return an empty string for this set since it can't match anything. # Projects based on randexp.js ## JSON-Schema Faker Use generators to populate JSON Schema samples. See: [jsf on github](https://github.com/json-schema-faker/json-schema-faker/) and [jsf demo page](http://json-schema-faker.js.org/). # Install ### Node.js npm install randexp ### Browser Download the [minified version](https://github.com/fent/randexp.js/releases) from the latest release. # Tests Tests are written with [mocha](https://mochajs.org) ```bash npm test ``` # License MIT long.js ======= A Long class for representing a 64 bit two's-complement integer value derived from the [Closure Library](https://github.com/google/closure-library) for stand-alone use and extended with unsigned support. [](https://travis-ci.org/dcodeIO/long.js) Background ---------- As of [ECMA-262 5th Edition](http://ecma262-5.com/ELS5_HTML.htm#Section_8.5), "all the positive and negative integers whose magnitude is no greater than 2<sup>53</sup> are representable in the Number type", which is "representing the doubleprecision 64-bit format IEEE 754 values as specified in the IEEE Standard for Binary Floating-Point Arithmetic". The [maximum safe integer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER) in JavaScript is 2<sup>53</sup>-1. Example: 2<sup>64</sup>-1 is 1844674407370955**1615** but in JavaScript it evaluates to 1844674407370955**2000**. Furthermore, bitwise operators in JavaScript "deal only with integers in the range −2<sup>31</sup> through 2<sup>31</sup>−1, inclusive, or in the range 0 through 2<sup>32</sup>−1, inclusive. These operators accept any value of the Number type but first convert each such value to one of 2<sup>32</sup> integer values." In some use cases, however, it is required to be able to reliably work with and perform bitwise operations on the full 64 bits. This is where long.js comes into play. Usage ----- The class is compatible with CommonJS and AMD loaders and is exposed globally as `Long` if neither is available. ```javascript var Long = require("long"); var longVal = new Long(0xFFFFFFFF, 0x7FFFFFFF); console.log(longVal.toString()); ... ``` API --- ### Constructor * new **Long**(low: `number`, high: `number`, unsigned?: `boolean`)<br /> Constructs a 64 bit two's-complement integer, given its low and high 32 bit values as *signed* integers. See the from* functions below for more convenient ways of constructing Longs. ### Fields * Long#**low**: `number`<br /> The low 32 bits as a signed value. * Long#**high**: `number`<br /> The high 32 bits as a signed value. * Long#**unsigned**: `boolean`<br /> Whether unsigned or not. ### Constants * Long.**ZERO**: `Long`<br /> Signed zero. * Long.**ONE**: `Long`<br /> Signed one. * Long.**NEG_ONE**: `Long`<br /> Signed negative one. * Long.**UZERO**: `Long`<br /> Unsigned zero. * Long.**UONE**: `Long`<br /> Unsigned one. * Long.**MAX_VALUE**: `Long`<br /> Maximum signed value. * Long.**MIN_VALUE**: `Long`<br /> Minimum signed value. * Long.**MAX_UNSIGNED_VALUE**: `Long`<br /> Maximum unsigned value. ### Utility * Long.**isLong**(obj: `*`): `boolean`<br /> Tests if the specified object is a Long. * Long.**fromBits**(lowBits: `number`, highBits: `number`, unsigned?: `boolean`): `Long`<br /> Returns a Long representing the 64 bit integer that comes by concatenating the given low and high bits. Each is assumed to use 32 bits. * Long.**fromBytes**(bytes: `number[]`, unsigned?: `boolean`, le?: `boolean`): `Long`<br /> Creates a Long from its byte representation. * Long.**fromBytesLE**(bytes: `number[]`, unsigned?: `boolean`): `Long`<br /> Creates a Long from its little endian byte representation. * Long.**fromBytesBE**(bytes: `number[]`, unsigned?: `boolean`): `Long`<br /> Creates a Long from its big endian byte representation. * Long.**fromInt**(value: `number`, unsigned?: `boolean`): `Long`<br /> Returns a Long representing the given 32 bit integer value. * Long.**fromNumber**(value: `number`, unsigned?: `boolean`): `Long`<br /> Returns a Long representing the given value, provided that it is a finite number. Otherwise, zero is returned. * Long.**fromString**(str: `string`, unsigned?: `boolean`, radix?: `number`)<br /> Long.**fromString**(str: `string`, radix: `number`)<br /> Returns a Long representation of the given string, written using the specified radix. * Long.**fromValue**(val: `*`, unsigned?: `boolean`): `Long`<br /> Converts the specified value to a Long using the appropriate from* function for its type. ### Methods * Long#**add**(addend: `Long | number | string`): `Long`<br /> Returns the sum of this and the specified Long. * Long#**and**(other: `Long | number | string`): `Long`<br /> Returns the bitwise AND of this Long and the specified. * Long#**compare**/**comp**(other: `Long | number | string`): `number`<br /> Compares this Long's value with the specified's. Returns `0` if they are the same, `1` if the this is greater and `-1` if the given one is greater. * Long#**divide**/**div**(divisor: `Long | number | string`): `Long`<br /> Returns this Long divided by the specified. * Long#**equals**/**eq**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value equals the specified's. * Long#**getHighBits**(): `number`<br /> Gets the high 32 bits as a signed integer. * Long#**getHighBitsUnsigned**(): `number`<br /> Gets the high 32 bits as an unsigned integer. * Long#**getLowBits**(): `number`<br /> Gets the low 32 bits as a signed integer. * Long#**getLowBitsUnsigned**(): `number`<br /> Gets the low 32 bits as an unsigned integer. * Long#**getNumBitsAbs**(): `number`<br /> Gets the number of bits needed to represent the absolute value of this Long. * Long#**greaterThan**/**gt**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value is greater than the specified's. * Long#**greaterThanOrEqual**/**gte**/**ge**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value is greater than or equal the specified's. * Long#**isEven**(): `boolean`<br /> Tests if this Long's value is even. * Long#**isNegative**(): `boolean`<br /> Tests if this Long's value is negative. * Long#**isOdd**(): `boolean`<br /> Tests if this Long's value is odd. * Long#**isPositive**(): `boolean`<br /> Tests if this Long's value is positive. * Long#**isZero**/**eqz**(): `boolean`<br /> Tests if this Long's value equals zero. * Long#**lessThan**/**lt**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value is less than the specified's. * Long#**lessThanOrEqual**/**lte**/**le**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value is less than or equal the specified's. * Long#**modulo**/**mod**/**rem**(divisor: `Long | number | string`): `Long`<br /> Returns this Long modulo the specified. * Long#**multiply**/**mul**(multiplier: `Long | number | string`): `Long`<br /> Returns the product of this and the specified Long. * Long#**negate**/**neg**(): `Long`<br /> Negates this Long's value. * Long#**not**(): `Long`<br /> Returns the bitwise NOT of this Long. * Long#**notEquals**/**neq**/**ne**(other: `Long | number | string`): `boolean`<br /> Tests if this Long's value differs from the specified's. * Long#**or**(other: `Long | number | string`): `Long`<br /> Returns the bitwise OR of this Long and the specified. * Long#**shiftLeft**/**shl**(numBits: `Long | number | string`): `Long`<br /> Returns this Long with bits shifted to the left by the given amount. * Long#**shiftRight**/**shr**(numBits: `Long | number | string`): `Long`<br /> Returns this Long with bits arithmetically shifted to the right by the given amount. * Long#**shiftRightUnsigned**/**shru**/**shr_u**(numBits: `Long | number | string`): `Long`<br /> Returns this Long with bits logically shifted to the right by the given amount. * Long#**subtract**/**sub**(subtrahend: `Long | number | string`): `Long`<br /> Returns the difference of this and the specified Long. * Long#**toBytes**(le?: `boolean`): `number[]`<br /> Converts this Long to its byte representation. * Long#**toBytesLE**(): `number[]`<br /> Converts this Long to its little endian byte representation. * Long#**toBytesBE**(): `number[]`<br /> Converts this Long to its big endian byte representation. * Long#**toInt**(): `number`<br /> Converts the Long to a 32 bit integer, assuming it is a 32 bit integer. * Long#**toNumber**(): `number`<br /> Converts the Long to a the nearest floating-point representation of this value (double, 53 bit mantissa). * Long#**toSigned**(): `Long`<br /> Converts this Long to signed. * Long#**toString**(radix?: `number`): `string`<br /> Converts the Long to a string written in the specified radix. * Long#**toUnsigned**(): `Long`<br /> Converts this Long to unsigned. * Long#**xor**(other: `Long | number | string`): `Long`<br /> Returns the bitwise XOR of this Long and the given one. Building -------- To build an UMD bundle to `dist/long.js`, run: ``` $> npm install $> npm run build ``` Running the [tests](./tests): ``` $> npm test ``` Overview [](https://travis-ci.org/lydell/js-tokens) ======== A regex that tokenizes JavaScript. ```js var jsTokens = require("js-tokens").default var jsString = "var foo=opts.foo;\n..." jsString.match(jsTokens) // ["var", " ", "foo", "=", "opts", ".", "foo", ";", "\n", ...] ``` Installation ============ `npm install js-tokens` ```js import jsTokens from "js-tokens" // or: var jsTokens = require("js-tokens").default ``` Usage ===== ### `jsTokens` ### A regex with the `g` flag that matches JavaScript tokens. The regex _always_ matches, even invalid JavaScript and the empty string. The next match is always directly after the previous. ### `var token = matchToToken(match)` ### ```js import {matchToToken} from "js-tokens" // or: var matchToToken = require("js-tokens").matchToToken ``` Takes a `match` returned by `jsTokens.exec(string)`, and returns a `{type: String, value: String}` object. The following types are available: - string - comment - regex - number - name - punctuator - whitespace - invalid Multi-line comments and strings also have a `closed` property indicating if the token was closed or not (see below). Comments and strings both come in several flavors. To distinguish them, check if the token starts with `//`, `/*`, `'`, `"` or `` ` ``. Names are ECMAScript IdentifierNames, that is, including both identifiers and keywords. You may use [is-keyword-js] to tell them apart. Whitespace includes both line terminators and other whitespace. [is-keyword-js]: https://github.com/crissdev/is-keyword-js ECMAScript support ================== The intention is to always support the latest ECMAScript version whose feature set has been finalized. If adding support for a newer version requires changes, a new version with a major verion bump will be released. Currently, ECMAScript 2018 is supported. Invalid code handling ===================== Unterminated strings are still matched as strings. JavaScript strings cannot contain (unescaped) newlines, so unterminated strings simply end at the end of the line. Unterminated template strings can contain unescaped newlines, though, so they go on to the end of input. Unterminated multi-line comments are also still matched as comments. They simply go on to the end of the input. Unterminated regex literals are likely matched as division and whatever is inside the regex. Invalid ASCII characters have their own capturing group. Invalid non-ASCII characters are treated as names, to simplify the matching of names (except unicode spaces which are treated as whitespace). Note: See also the [ES2018](#es2018) section. Regex literals may contain invalid regex syntax. They are still matched as regex literals. They may also contain repeated regex flags, to keep the regex simple. Strings may contain invalid escape sequences. Limitations =========== Tokenizing JavaScript using regexes—in fact, _one single regex_—won’t be perfect. But that’s not the point either. You may compare jsTokens with [esprima] by using `esprima-compare.js`. See `npm run esprima-compare`! [esprima]: http://esprima.org/ ### Template string interpolation ### Template strings are matched as single tokens, from the starting `` ` `` to the ending `` ` ``, including interpolations (whose tokens are not matched individually). Matching template string interpolations requires recursive balancing of `{` and `}`—something that JavaScript regexes cannot do. Only one level of nesting is supported. ### Division and regex literals collision ### Consider this example: ```js var g = 9.82 var number = bar / 2/g var regex = / 2/g ``` A human can easily understand that in the `number` line we’re dealing with division, and in the `regex` line we’re dealing with a regex literal. How come? Because humans can look at the whole code to put the `/` characters in context. A JavaScript regex cannot. It only sees forwards. (Well, ES2018 regexes can also look backwards. See the [ES2018](#es2018) section). When the `jsTokens` regex scans throught the above, it will see the following at the end of both the `number` and `regex` rows: ```js / 2/g ``` It is then impossible to know if that is a regex literal, or part of an expression dealing with division. Here is a similar case: ```js foo /= 2/g foo(/= 2/g) ``` The first line divides the `foo` variable with `2/g`. The second line calls the `foo` function with the regex literal `/= 2/g`. Again, since `jsTokens` only sees forwards, it cannot tell the two cases apart. There are some cases where we _can_ tell division and regex literals apart, though. First off, we have the simple cases where there’s only one slash in the line: ```js var foo = 2/g foo /= 2 ``` Regex literals cannot contain newlines, so the above cases are correctly identified as division. Things are only problematic when there are more than one non-comment slash in a single line. Secondly, not every character is a valid regex flag. ```js var number = bar / 2/e ``` The above example is also correctly identified as division, because `e` is not a valid regex flag. I initially wanted to future-proof by allowing `[a-zA-Z]*` (any letter) as flags, but it is not worth it since it increases the amount of ambigous cases. So only the standard `g`, `m`, `i`, `y` and `u` flags are allowed. This means that the above example will be identified as division as long as you don’t rename the `e` variable to some permutation of `gmiyus` 1 to 6 characters long. Lastly, we can look _forward_ for information. - If the token following what looks like a regex literal is not valid after a regex literal, but is valid in a division expression, then the regex literal is treated as division instead. For example, a flagless regex cannot be followed by a string, number or name, but all of those three can be the denominator of a division. - Generally, if what looks like a regex literal is followed by an operator, the regex literal is treated as division instead. This is because regexes are seldomly used with operators (such as `+`, `*`, `&&` and `==`), but division could likely be part of such an expression. Please consult the regex source and the test cases for precise information on when regex or division is matched (should you need to know). In short, you could sum it up as: If the end of a statement looks like a regex literal (even if it isn’t), it will be treated as one. Otherwise it should work as expected (if you write sane code). ### ES2018 ### ES2018 added some nice regex improvements to the language. - [Unicode property escapes] should allow telling names and invalid non-ASCII characters apart without blowing up the regex size. - [Lookbehind assertions] should allow matching telling division and regex literals apart in more cases. - [Named capture groups] might simplify some things. These things would be nice to do, but are not critical. They probably have to wait until the oldest maintained Node.js LTS release supports those features. [Unicode property escapes]: http://2ality.com/2017/07/regexp-unicode-property-escapes.html [Lookbehind assertions]: http://2ality.com/2017/05/regexp-lookbehind-assertions.html [Named capture groups]: http://2ality.com/2017/05/regexp-named-capture-groups.html License ======= [MIT](LICENSE). # is-ci Returns `true` if the current environment is a Continuous Integration server. Please [open an issue](https://github.com/watson/is-ci/issues) if your CI server isn't properly detected :) [](https://www.npmjs.com/package/is-ci) [](https://travis-ci.org/watson/is-ci) [](https://github.com/feross/standard) ## Installation ```bash npm install is-ci --save ``` ## Programmatic Usage ```js const isCI = require('is-ci') if (isCI) { console.log('The code is running on a CI server') } ``` ## CLI Usage For CLI usage you need to have the `is-ci` executable in your `PATH`. There's a few ways to do that: - Either install the module globally using `npm install is-ci -g` - Or add the module as a dependency to your app in which case it can be used inside your package.json scripts as is - Or provide the full path to the executable, e.g. `./node_modules/.bin/is-ci` ```bash is-ci && echo "This is a CI server" ``` ## Supported CI tools Refer to [ci-info](https://github.com/watson/ci-info#supported-ci-tools) docs for all supported CI's ## License [MIT](LICENSE) # levn [](https://travis-ci.org/gkz/levn) <a name="levn" /> __Light ECMAScript (JavaScript) Value Notation__ Levn is a library which allows you to parse a string into a JavaScript value based on an expected type. It is meant for short amounts of human entered data (eg. config files, command line arguments). Levn aims to concisely describe JavaScript values in text, and allow for the extraction and validation of those values. Levn uses [type-check](https://github.com/gkz/type-check) for its type format, and to validate the results. MIT license. Version 0.4.1. __How is this different than JSON?__ levn is meant to be written by humans only, is (due to the previous point) much more concise, can be validated against supplied types, has regex and date literals, and can easily be extended with custom types. On the other hand, it is probably slower and thus less efficient at transporting large amounts of data, which is fine since this is not its purpose. npm install levn For updates on levn, [follow me on twitter](https://twitter.com/gkzahariev). ## Quick Examples ```js var parse = require('levn').parse; parse('Number', '2'); // 2 parse('String', '2'); // '2' parse('String', 'levn'); // 'levn' parse('String', 'a b'); // 'a b' parse('Boolean', 'true'); // true parse('Date', '#2011-11-11#'); // (Date object) parse('Date', '2011-11-11'); // (Date object) parse('RegExp', '/[a-z]/gi'); // /[a-z]/gi parse('RegExp', 're'); // /re/ parse('Int', '2'); // 2 parse('Number | String', 'str'); // 'str' parse('Number | String', '2'); // 2 parse('[Number]', '[1,2,3]'); // [1,2,3] parse('(String, Boolean)', '(hi, false)'); // ['hi', false] parse('{a: String, b: Number}', '{a: str, b: 2}'); // {a: 'str', b: 2} // at the top level, you can ommit surrounding delimiters parse('[Number]', '1,2,3'); // [1,2,3] parse('(String, Boolean)', 'hi, false'); // ['hi', false] parse('{a: String, b: Number}', 'a: str, b: 2'); // {a: 'str', b: 2} // wildcard - auto choose type parse('*', '[hi,(null,[42]),{k: true}]'); // ['hi', [null, [42]], {k: true}] ``` ## Usage `require('levn');` returns an object that exposes three properties. `VERSION` is the current version of the library as a string. `parse` and `parsedTypeParse` are functions. ```js // parse(type, input, options); parse('[Number]', '1,2,3'); // [1, 2, 3] // parsedTypeParse(parsedType, input, options); var parsedType = require('type-check').parseType('[Number]'); parsedTypeParse(parsedType, '1,2,3'); // [1, 2, 3] ``` ### parse(type, input, options) `parse` casts the string `input` into a JavaScript value according to the specified `type` in the [type format](https://github.com/gkz/type-check#type-format) (and taking account the optional `options`) and returns the resulting JavaScript value. ##### arguments * type - `String` - the type written in the [type format](https://github.com/gkz/type-check#type-format) which to check against * input - `String` - the value written in the [levn format](#levn-format) * options - `Maybe Object` - an optional parameter specifying additional [options](#options) ##### returns `*` - the resulting JavaScript value ##### example ```js parse('[Number]', '1,2,3'); // [1, 2, 3] ``` ### parsedTypeParse(parsedType, input, options) `parsedTypeParse` casts the string `input` into a JavaScript value according to the specified `type` which has already been parsed (and taking account the optional `options`) and returns the resulting JavaScript value. You can parse a type using the [type-check](https://github.com/gkz/type-check) library's `parseType` function. ##### arguments * type - `Object` - the type in the parsed type format which to check against * input - `String` - the value written in the [levn format](#levn-format) * options - `Maybe Object` - an optional parameter specifying additional [options](#options) ##### returns `*` - the resulting JavaScript value ##### example ```js var parsedType = require('type-check').parseType('[Number]'); parsedTypeParse(parsedType, '1,2,3'); // [1, 2, 3] ``` ## Levn Format Levn can use the type information you provide to choose the appropriate value to produce from the input. For the same input, it will choose a different output value depending on the type provided. For example, `parse('Number', '2')` will produce the number `2`, but `parse('String', '2')` will produce the string `"2"`. If you do not provide type information, and simply use `*`, levn will parse the input according the unambiguous "explicit" mode, which we will now detail - you can also set the `explicit` option to true manually in the [options](#options). * `"string"`, `'string'` are parsed as a String, eg. `"a msg"` is `"a msg"` * `#date#` is parsed as a Date, eg. `#2011-11-11#` is `new Date('2011-11-11')` * `/regexp/flags` is parsed as a RegExp, eg. `/re/gi` is `/re/gi` * `undefined`, `null`, `NaN`, `true`, and `false` are all their JavaScript equivalents * `[element1, element2, etc]` is an Array, and the casting procedure is recursively applied to each element. Eg. `[1,2,3]` is `[1,2,3]`. * `(element1, element2, etc)` is an tuple, and the casting procedure is recursively applied to each element. Eg. `(1, a)` is `(1, a)` (is `[1, 'a']`). * `{key1: val1, key2: val2, ...}` is an Object, and the casting procedure is recursively applied to each property. Eg. `{a: 1, b: 2}` is `{a: 1, b: 2}`. * Any test which does not fall under the above, and which does not contain special characters (`[``]``(``)``{``}``:``,`) is a string, eg. `$12- blah` is `"$12- blah"`. If you do provide type information, you can make your input more concise as the program already has some information about what it expects. Please see the [type format](https://github.com/gkz/type-check#type-format) section of [type-check](https://github.com/gkz/type-check) for more information about how to specify types. There are some rules about what levn can do with the information: * If a String is expected, and only a String, all characters of the input (including any special ones) will become part of the output. Eg. `[({})]` is `"[({})]"`, and `"hi"` is `'"hi"'`. * If a Date is expected, the surrounding `#` can be omitted from date literals. Eg. `2011-11-11` is `new Date('2011-11-11')`. * If a RegExp is expected, no flags need to be specified, and the regex is not using any of the special characters,the opening and closing `/` can be omitted - this will have the affect of setting the source of the regex to the input. Eg. `regex` is `/regex/`. * If an Array is expected, and it is the root node (at the top level), the opening `[` and closing `]` can be omitted. Eg. `1,2,3` is `[1,2,3]`. * If a tuple is expected, and it is the root node (at the top level), the opening `(` and closing `)` can be omitted. Eg. `1, a` is `(1, a)` (is `[1, 'a']`). * If an Object is expected, and it is the root node (at the top level), the opening `{` and closing `}` can be omitted. Eg `a: 1, b: 2` is `{a: 1, b: 2}`. If you list multiple types (eg. `Number | String`), it will first attempt to cast to the first type and then validate - if the validation fails it will move on to the next type and so forth, left to right. You must be careful as some types will succeed with any input, such as String. Thus put String at the end of your list. In non-explicit mode, Date and RegExp will succeed with a large variety of input - also be careful with these and list them near the end if not last in your list. Whitespace between special characters and elements is inconsequential. ## Options Options is an object. It is an optional parameter to the `parse` and `parsedTypeParse` functions. ### Explicit A `Boolean`. By default it is `false`. __Example:__ ```js parse('RegExp', 're', {explicit: false}); // /re/ parse('RegExp', 're', {explicit: true}); // Error: ... does not type check... parse('RegExp | String', 're', {explicit: true}); // 're' ``` `explicit` sets whether to be in explicit mode or not. Using `*` automatically activates explicit mode. For more information, read the [levn format](#levn-format) section. ### customTypes An `Object`. Empty `{}` by default. __Example:__ ```js var options = { customTypes: { Even: { typeOf: 'Number', validate: function (x) { return x % 2 === 0; }, cast: function (x) { return {type: 'Just', value: parseInt(x)}; } } } } parse('Even', '2', options); // 2 parse('Even', '3', options); // Error: Value: "3" does not type check... ``` __Another Example:__ ```js function Person(name, age){ this.name = name; this.age = age; } var options = { customTypes: { Person: { typeOf: 'Object', validate: function (x) { x instanceof Person; }, cast: function (value, options, typesCast) { var name, age; if ({}.toString.call(value).slice(8, -1) !== 'Object') { return {type: 'Nothing'}; } name = typesCast(value.name, [{type: 'String'}], options); age = typesCast(value.age, [{type: 'Numger'}], options); return {type: 'Just', value: new Person(name, age)}; } } } parse('Person', '{name: Laura, age: 25}', options); // Person {name: 'Laura', age: 25} ``` `customTypes` is an object whose keys are the name of the types, and whose values are an object with three properties, `typeOf`, `validate`, and `cast`. For more information about `typeOf` and `validate`, please see the [custom types](https://github.com/gkz/type-check#custom-types) section of type-check. `cast` is a function which receives three arguments, the value under question, options, and the typesCast function. In `cast`, attempt to cast the value into the specified type. If you are successful, return an object in the format `{type: 'Just', value: CAST-VALUE}`, if you know it won't work, return `{type: 'Nothing'}`. You can use the `typesCast` function to cast any child values. Remember to pass `options` to it. In your function you can also check for `options.explicit` and act accordingly. ## Technical About `levn` is written in [LiveScript](http://livescript.net/) - a language that compiles to JavaScript. It uses [type-check](https://github.com/gkz/type-check) to both parse types and validate values. It also uses the [prelude.ls](http://preludels.com/) library. <img align="right" alt="Ajv logo" width="160" src="https://ajv.js.org/img/ajv.svg"> &nbsp; # Ajv JSON schema validator The fastest JSON validator for Node.js and browser. Supports JSON Schema draft-04/06/07/2019-09/2020-12 ([draft-04 support](https://ajv.js.org/json-schema.html#draft-04) requires ajv-draft-04 package) and JSON Type Definition [RFC8927](https://datatracker.ietf.org/doc/rfc8927/). 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We welcome implementing new features that will benefit many users and ideas to improve our documentation. Please review [Contributing guidelines](./CONTRIBUTING.md) and [Code components](https://ajv.js.org/components.html). ## Documentation All documentation is available on the [Ajv website](https://ajv.js.org). Some useful site links: - [Getting started](https://ajv.js.org/guide/getting-started.html) - [JSON Schema vs JSON Type Definition](https://ajv.js.org/guide/schema-language.html) - [API reference](https://ajv.js.org/api.html) - [Strict mode](https://ajv.js.org/strict-mode.html) - [Standalone validation code](https://ajv.js.org/standalone.html) - [Security considerations](https://ajv.js.org/security.html) - [Command line interface](https://ajv.js.org/packages/ajv-cli.html) - [Frequently Asked Questions](https://ajv.js.org/faq.html) ## <a name="sponsors"></a>Please [sponsor Ajv development](https://github.com/sponsors/epoberezkin) Since I asked to support Ajv development 40 people and 6 organizations contributed via GitHub and OpenCollective - this support helped receiving the MOSS grant! Your continuing support is very important - the funds will be used to develop and maintain Ajv once the next major version is released. Please sponsor Ajv via: - [GitHub sponsors page](https://github.com/sponsors/epoberezkin) (GitHub will match it) - [Ajv Open Collective️](https://opencollective.com/ajv) Thank you. #### Open Collective sponsors <a href="https://opencollective.com/ajv"><img src="https://opencollective.com/ajv/individuals.svg?width=890"></a> <a href="https://opencollective.com/ajv/organization/0/website"><img src="https://opencollective.com/ajv/organization/0/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/1/website"><img src="https://opencollective.com/ajv/organization/1/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/2/website"><img src="https://opencollective.com/ajv/organization/2/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/3/website"><img src="https://opencollective.com/ajv/organization/3/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/4/website"><img src="https://opencollective.com/ajv/organization/4/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/5/website"><img src="https://opencollective.com/ajv/organization/5/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/6/website"><img src="https://opencollective.com/ajv/organization/6/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/7/website"><img src="https://opencollective.com/ajv/organization/7/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/8/website"><img src="https://opencollective.com/ajv/organization/8/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/9/website"><img src="https://opencollective.com/ajv/organization/9/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/10/website"><img src="https://opencollective.com/ajv/organization/10/avatar.svg"></a> <a href="https://opencollective.com/ajv/organization/11/website"><img src="https://opencollective.com/ajv/organization/11/avatar.svg"></a> ## Performance Ajv generates code to turn JSON Schemas into super-fast validation functions that are efficient for v8 optimization. Currently Ajv is the fastest and the most standard compliant validator according to these benchmarks: - [json-schema-benchmark](https://github.com/ebdrup/json-schema-benchmark) - 50% faster than the second place - [jsck benchmark](https://github.com/pandastrike/jsck#benchmarks) - 20-190% faster - [z-schema benchmark](https://rawgit.com/zaggino/z-schema/master/benchmark/results.html) - [themis benchmark](https://cdn.rawgit.com/playlyfe/themis/master/benchmark/results.html) Performance of different validators by [json-schema-benchmark](https://github.com/ebdrup/json-schema-benchmark): [](https://github.com/ebdrup/json-schema-benchmark/blob/master/README.md#performance) ## Features - Ajv implements JSON Schema [draft-06/07/2019-09/2020-12](http://json-schema.org/) standards (draft-04 is supported in v6): - all validation keywords (see [JSON Schema validation keywords](https://ajv.js.org/json-schema.html)) - [OpenAPI](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.3.md) extensions: - NEW: keyword [discriminator](https://ajv.js.org/json-schema.html#discriminator). - keyword [nullable](https://ajv.js.org/json-schema.html#nullable). - full support of remote references (remote schemas have to be added with `addSchema` or compiled to be available) - support of recursive references between schemas - correct string lengths for strings with unicode pairs - JSON Schema [formats](https://ajv.js.org/guide/formats.html) (with [ajv-formats](https://github.com/ajv-validator/ajv-formats) plugin). - [validates schemas against meta-schema](https://ajv.js.org/api.html#api-validateschema) - NEW: supports [JSON Type Definition](https://datatracker.ietf.org/doc/rfc8927/): - all keywords (see [JSON Type Definition schema forms](https://ajv.js.org/json-type-definition.html)) - meta-schema for JTD schemas - "union" keyword and user-defined keywords (can be used inside "metadata" member of the schema) - supports [browsers](https://ajv.js.org/guide/environments.html#browsers) and Node.js 10.x - current - [asynchronous loading](https://ajv.js.org/guide/managing-schemas.html#asynchronous-schema-loading) of referenced schemas during compilation - "All errors" validation mode with [option allErrors](https://ajv.js.org/options.html#allerrors) - [error messages with parameters](https://ajv.js.org/api.html#validation-errors) describing error reasons to allow error message generation - i18n error messages support with [ajv-i18n](https://github.com/ajv-validator/ajv-i18n) package - [removing-additional-properties](https://ajv.js.org/guide/modifying-data.html#removing-additional-properties) - [assigning defaults](https://ajv.js.org/guide/modifying-data.html#assigning-defaults) to missing properties and items - [coercing data](https://ajv.js.org/guide/modifying-data.html#coercing-data-types) to the types specified in `type` keywords - [user-defined keywords](https://ajv.js.org/guide/user-keywords.html) - additional extension keywords with [ajv-keywords](https://github.com/ajv-validator/ajv-keywords) package - [\$data reference](https://ajv.js.org/guide/combining-schemas.html#data-reference) to use values from the validated data as values for the schema keywords - [asynchronous validation](https://ajv.js.org/guide/async-validation.html) of user-defined formats and keywords ## Install To install version 8: ``` npm install ajv ``` ## <a name="usage"></a>Getting started Try it in the Node.js REPL: https://runkit.com/npm/ajv In JavaScript: ```javascript // or ESM/TypeScript import import Ajv from "ajv" // Node.js require: const Ajv = require("ajv") const ajv = new Ajv() // options can be passed, e.g. {allErrors: true} const schema = { type: "object", properties: { foo: {type: "integer"}, bar: {type: "string"} }, required: ["foo"], additionalProperties: false, } const data = { foo: 1, bar: "abc" } const validate = ajv.compile(schema) const valid = validate(data) if (!valid) console.log(validate.errors) ``` Learn how to use Ajv and see more examples in the [Guide: getting started](https://ajv.js.org/guide/getting-started.html) ## Changes history See [https://github.com/ajv-validator/ajv/releases](https://github.com/ajv-validator/ajv/releases) **Please note**: [Changes in version 8.0.0](https://github.com/ajv-validator/ajv/releases/tag/v8.0.0) [Version 7.0.0](https://github.com/ajv-validator/ajv/releases/tag/v7.0.0) [Version 6.0.0](https://github.com/ajv-validator/ajv/releases/tag/v6.0.0). ## Code of conduct Please review and follow the [Code of conduct](./CODE_OF_CONDUCT.md). Please report any unacceptable behaviour to ajv.validator@gmail.com - it will be reviewed by the project team. ## Security contact To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. Please do NOT report security vulnerabilities via GitHub issues. ## Open-source software support Ajv is a part of [Tidelift subscription](https://tidelift.com/subscription/pkg/npm-ajv?utm_source=npm-ajv&utm_medium=referral&utm_campaign=readme) - it provides a centralised support to open-source software users, in addition to the support provided by software maintainers. ## License [MIT](./LICENSE) # Borsh JS [](https://opensource.org/licenses/Apache-2.0) [](https://opensource.org/licenses/MIT) [](https://discord.gg/Vyp7ETM) [](https://travis-ci.com/near/borsh-js) [](https://npmjs.com/borsh) [](https://npmjs.com/borsh) **Borsh JS** is an implementation of the [Borsh] binary serialization format for JavaScript and TypeScript projects. Borsh stands for _Binary Object Representation Serializer for Hashing_. It is meant to be used in security-critical projects as it prioritizes consistency, safety, speed, and comes with a strict specification. ## Examples ### Serializing an object ```javascript const value = new Test({ x: 255, y: 20, z: '123', q: [1, 2, 3] }); const schema = new Map([[Test, { kind: 'struct', fields: [['x', 'u8'], ['y', 'u64'], ['z', 'string'], ['q', [3]]] }]]); const buffer = borsh.serialize(schema, value); ``` ### Deserializing an object ```javascript const newValue = borsh.deserialize(schema, Test, buffer); ``` ## Type Mappings | Borsh | TypeScript | |-----------------------|----------------| | `u8` integer | `number` | | `u16` integer | `number` | | `u32` integer | `number` | | `u64` integer | `BN` | | `u128` integer | `BN` | | `u256` integer | `BN` | | `u512` integer | `BN` | | `f32` float | N/A | | `f64` float | N/A | | fixed-size byte array | `Uint8Array` | | UTF-8 string | `string` | | option | `null` or type | | map | N/A | | set | N/A | | structs | `any` | ## Contributing Install dependencies: ```bash yarn install ``` Continuously build with: ```bash yarn dev ``` Run tests: ```bash yarn test ``` Run linter ```bash yarn lint ``` ## Publish Prepare `dist` version by running: ```bash yarn build ``` When publishing to npm use [np](https://github.com/sindresorhus/np). # License This repository is distributed under the terms of both the MIT license and the Apache License (Version 2.0). See [LICENSE-MIT](LICENSE-MIT.txt) and [LICENSE-APACHE](LICENSE-APACHE) for details. [Borsh]: https://borsh.io # bip39-light A lightweight fork of [bitcoinjs/bip39](https://github.com/bitcoinjs/bip39). Only english wordlist and removed some dependendecies. JavaScript implementation of [Bitcoin BIP39](https://github.com/bitcoin/bips/blob/master/bip-0039.mediawiki): Mnemonic code for generating deterministic keys ## Reminder for developers ***Please remember to allow recovery from mnemonic phrases that have invalid checksums (or that you don't have the wordlist)*** When a checksum is invalid, warn the user that the phrase is not something generated by your app, and ask if they would like to use it anyway. This way, your app only needs to hold the wordlists for your supported languages, but you can recover phrases made by other apps in other languages. However, there should be other checks in place, such as checking to make sure the user is inputting 12 words or more separated by a space. ie. `phrase.trim().split(/\s+/g).length >= 12` ## Examples ``` js // Generate a random mnemonic (uses crypto.randomBytes under the hood), defaults to 128-bits of entropy var mnemonic = bip39.generateMnemonic() // => 'seed sock milk update focus rotate barely fade car face mechanic mercy' bip39.mnemonicToSeedHex('basket actual') // => '5cf2d4a8b0355e90295bdfc565a022a409af063d5365bb57bf74d9528f494bfa4400f53d8349b80fdae44082d7f9541e1dba2b003bcfec9d0d53781ca676651f' bip39.mnemonicToSeed('basket actual') // => <Buffer 5c f2 d4 a8 b0 35 5e 90 29 5b df c5 65 a0 22 a4 09 af 06 3d 53 65 bb 57 bf 74 d9 52 8f 49 4b fa 44 00 f5 3d 83 49 b8 0f da e4 40 82 d7 f9 54 1e 1d ba 2b ...> bip39.validateMnemonic(mnemonic) // => true bip39.validateMnemonic('basket actual') // => false ``` ``` js var bip39 = require('bip39-light') // defaults to BIP39 English word list // uses HEX strings for entropy var mnemonic = bip39.entropyToMnemonic('00000000000000000000000000000000') // => abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about // reversible bip39.mnemonicToEntropy(mnemonic) // => '00000000000000000000000000000000' ``` Shims used when bundling asc for browser usage. # safe-buffer [![travis][travis-image]][travis-url] [![npm][npm-image]][npm-url] [![downloads][downloads-image]][downloads-url] [![javascript style guide][standard-image]][standard-url] [travis-image]: https://img.shields.io/travis/feross/safe-buffer/master.svg [travis-url]: https://travis-ci.org/feross/safe-buffer [npm-image]: https://img.shields.io/npm/v/safe-buffer.svg [npm-url]: https://npmjs.org/package/safe-buffer [downloads-image]: https://img.shields.io/npm/dm/safe-buffer.svg [downloads-url]: https://npmjs.org/package/safe-buffer [standard-image]: https://img.shields.io/badge/code_style-standard-brightgreen.svg [standard-url]: https://standardjs.com #### Safer Node.js Buffer API **Use the new Node.js Buffer APIs (`Buffer.from`, `Buffer.alloc`, `Buffer.allocUnsafe`, `Buffer.allocUnsafeSlow`) in all versions of Node.js.** **Uses the built-in implementation when available.** ## install ``` npm install safe-buffer ``` ## usage The goal of this package is to provide a safe replacement for the node.js `Buffer`. It's a drop-in replacement for `Buffer`. You can use it by adding one `require` line to the top of your node.js modules: ```js var Buffer = require('safe-buffer').Buffer // Existing buffer code will continue to work without issues: new Buffer('hey', 'utf8') new Buffer([1, 2, 3], 'utf8') new Buffer(obj) new Buffer(16) // create an uninitialized buffer (potentially unsafe) // But you can use these new explicit APIs to make clear what you want: Buffer.from('hey', 'utf8') // convert from many types to a Buffer Buffer.alloc(16) // create a zero-filled buffer (safe) Buffer.allocUnsafe(16) // create an uninitialized buffer (potentially unsafe) ``` ## api ### Class Method: Buffer.from(array) <!-- YAML added: v3.0.0 --> * `array` {Array} Allocates a new `Buffer` using an `array` of octets. ```js const buf = Buffer.from([0x62,0x75,0x66,0x66,0x65,0x72]); // creates a new Buffer containing ASCII bytes // ['b','u','f','f','e','r'] ``` A `TypeError` will be thrown if `array` is not an `Array`. ### Class Method: Buffer.from(arrayBuffer[, byteOffset[, length]]) <!-- YAML added: v5.10.0 --> * `arrayBuffer` {ArrayBuffer} The `.buffer` property of a `TypedArray` or a `new ArrayBuffer()` * `byteOffset` {Number} Default: `0` * `length` {Number} Default: `arrayBuffer.length - byteOffset` When passed a reference to the `.buffer` property of a `TypedArray` instance, the newly created `Buffer` will share the same allocated memory as the TypedArray. ```js const arr = new Uint16Array(2); arr[0] = 5000; arr[1] = 4000; const buf = Buffer.from(arr.buffer); // shares the memory with arr; console.log(buf); // Prints: <Buffer 88 13 a0 0f> // changing the TypedArray changes the Buffer also arr[1] = 6000; console.log(buf); // Prints: <Buffer 88 13 70 17> ``` The optional `byteOffset` and `length` arguments specify a memory range within the `arrayBuffer` that will be shared by the `Buffer`. ```js const ab = new ArrayBuffer(10); const buf = Buffer.from(ab, 0, 2); console.log(buf.length); // Prints: 2 ``` A `TypeError` will be thrown if `arrayBuffer` is not an `ArrayBuffer`. ### Class Method: Buffer.from(buffer) <!-- YAML added: v3.0.0 --> * `buffer` {Buffer} Copies the passed `buffer` data onto a new `Buffer` instance. ```js const buf1 = Buffer.from('buffer'); const buf2 = Buffer.from(buf1); buf1[0] = 0x61; console.log(buf1.toString()); // 'auffer' console.log(buf2.toString()); // 'buffer' (copy is not changed) ``` A `TypeError` will be thrown if `buffer` is not a `Buffer`. ### Class Method: Buffer.from(str[, encoding]) <!-- YAML added: v5.10.0 --> * `str` {String} String to encode. * `encoding` {String} Encoding to use, Default: `'utf8'` Creates a new `Buffer` containing the given JavaScript string `str`. If provided, the `encoding` parameter identifies the character encoding. If not provided, `encoding` defaults to `'utf8'`. ```js const buf1 = Buffer.from('this is a tést'); console.log(buf1.toString()); // prints: this is a tést console.log(buf1.toString('ascii')); // prints: this is a tC)st const buf2 = Buffer.from('7468697320697320612074c3a97374', 'hex'); console.log(buf2.toString()); // prints: this is a tést ``` A `TypeError` will be thrown if `str` is not a string. ### Class Method: Buffer.alloc(size[, fill[, encoding]]) <!-- YAML added: v5.10.0 --> * `size` {Number} * `fill` {Value} Default: `undefined` * `encoding` {String} Default: `utf8` Allocates a new `Buffer` of `size` bytes. If `fill` is `undefined`, the `Buffer` will be *zero-filled*. ```js const buf = Buffer.alloc(5); console.log(buf); // <Buffer 00 00 00 00 00> ``` The `size` must be less than or equal to the value of `require('buffer').kMaxLength` (on 64-bit architectures, `kMaxLength` is `(2^31)-1`). Otherwise, a [`RangeError`][] is thrown. A zero-length Buffer will be created if a `size` less than or equal to 0 is specified. If `fill` is specified, the allocated `Buffer` will be initialized by calling `buf.fill(fill)`. See [`buf.fill()`][] for more information. ```js const buf = Buffer.alloc(5, 'a'); console.log(buf); // <Buffer 61 61 61 61 61> ``` If both `fill` and `encoding` are specified, the allocated `Buffer` will be initialized by calling `buf.fill(fill, encoding)`. For example: ```js const buf = Buffer.alloc(11, 'aGVsbG8gd29ybGQ=', 'base64'); console.log(buf); // <Buffer 68 65 6c 6c 6f 20 77 6f 72 6c 64> ``` Calling `Buffer.alloc(size)` can be significantly slower than the alternative `Buffer.allocUnsafe(size)` but ensures that the newly created `Buffer` instance contents will *never contain sensitive data*. A `TypeError` will be thrown if `size` is not a number. ### Class Method: Buffer.allocUnsafe(size) <!-- YAML added: v5.10.0 --> * `size` {Number} Allocates a new *non-zero-filled* `Buffer` of `size` bytes. The `size` must be less than or equal to the value of `require('buffer').kMaxLength` (on 64-bit architectures, `kMaxLength` is `(2^31)-1`). Otherwise, a [`RangeError`][] is thrown. A zero-length Buffer will be created if a `size` less than or equal to 0 is specified. The underlying memory for `Buffer` instances created in this way is *not initialized*. The contents of the newly created `Buffer` are unknown and *may contain sensitive data*. Use [`buf.fill(0)`][] to initialize such `Buffer` instances to zeroes. ```js const buf = Buffer.allocUnsafe(5); console.log(buf); // <Buffer 78 e0 82 02 01> // (octets will be different, every time) buf.fill(0); console.log(buf); // <Buffer 00 00 00 00 00> ``` A `TypeError` will be thrown if `size` is not a number. Note that the `Buffer` module pre-allocates an internal `Buffer` instance of size `Buffer.poolSize` that is used as a pool for the fast allocation of new `Buffer` instances created using `Buffer.allocUnsafe(size)` (and the deprecated `new Buffer(size)` constructor) only when `size` is less than or equal to `Buffer.poolSize >> 1` (floor of `Buffer.poolSize` divided by two). The default value of `Buffer.poolSize` is `8192` but can be modified. Use of this pre-allocated internal memory pool is a key difference between calling `Buffer.alloc(size, fill)` vs. `Buffer.allocUnsafe(size).fill(fill)`. Specifically, `Buffer.alloc(size, fill)` will *never* use the internal Buffer pool, while `Buffer.allocUnsafe(size).fill(fill)` *will* use the internal Buffer pool if `size` is less than or equal to half `Buffer.poolSize`. The difference is subtle but can be important when an application requires the additional performance that `Buffer.allocUnsafe(size)` provides. ### Class Method: Buffer.allocUnsafeSlow(size) <!-- YAML added: v5.10.0 --> * `size` {Number} Allocates a new *non-zero-filled* and non-pooled `Buffer` of `size` bytes. The `size` must be less than or equal to the value of `require('buffer').kMaxLength` (on 64-bit architectures, `kMaxLength` is `(2^31)-1`). Otherwise, a [`RangeError`][] is thrown. A zero-length Buffer will be created if a `size` less than or equal to 0 is specified. The underlying memory for `Buffer` instances created in this way is *not initialized*. The contents of the newly created `Buffer` are unknown and *may contain sensitive data*. Use [`buf.fill(0)`][] to initialize such `Buffer` instances to zeroes. When using `Buffer.allocUnsafe()` to allocate new `Buffer` instances, allocations under 4KB are, by default, sliced from a single pre-allocated `Buffer`. This allows applications to avoid the garbage collection overhead of creating many individually allocated Buffers. This approach improves both performance and memory usage by eliminating the need to track and cleanup as many `Persistent` objects. However, in the case where a developer may need to retain a small chunk of memory from a pool for an indeterminate amount of time, it may be appropriate to create an un-pooled Buffer instance using `Buffer.allocUnsafeSlow()` then copy out the relevant bits. ```js // need to keep around a few small chunks of memory const store = []; socket.on('readable', () => { const data = socket.read(); // allocate for retained data const sb = Buffer.allocUnsafeSlow(10); // copy the data into the new allocation data.copy(sb, 0, 0, 10); store.push(sb); }); ``` Use of `Buffer.allocUnsafeSlow()` should be used only as a last resort *after* a developer has observed undue memory retention in their applications. A `TypeError` will be thrown if `size` is not a number. ### All the Rest The rest of the `Buffer` API is exactly the same as in node.js. [See the docs](https://nodejs.org/api/buffer.html). ## Related links - [Node.js issue: Buffer(number) is unsafe](https://github.com/nodejs/node/issues/4660) - [Node.js Enhancement Proposal: Buffer.from/Buffer.alloc/Buffer.zalloc/Buffer() soft-deprecate](https://github.com/nodejs/node-eps/pull/4) ## Why is `Buffer` unsafe? Today, the node.js `Buffer` constructor is overloaded to handle many different argument types like `String`, `Array`, `Object`, `TypedArrayView` (`Uint8Array`, etc.), `ArrayBuffer`, and also `Number`. The API is optimized for convenience: you can throw any type at it, and it will try to do what you want. Because the Buffer constructor is so powerful, you often see code like this: ```js // Convert UTF-8 strings to hex function toHex (str) { return new Buffer(str).toString('hex') } ``` ***But what happens if `toHex` is called with a `Number` argument?*** ### Remote Memory Disclosure If an attacker can make your program call the `Buffer` constructor with a `Number` argument, then they can make it allocate uninitialized memory from the node.js process. This could potentially disclose TLS private keys, user data, or database passwords. When the `Buffer` constructor is passed a `Number` argument, it returns an **UNINITIALIZED** block of memory of the specified `size`. When you create a `Buffer` like this, you **MUST** overwrite the contents before returning it to the user. From the [node.js docs](https://nodejs.org/api/buffer.html#buffer_new_buffer_size): > `new Buffer(size)` > > - `size` Number > > The underlying memory for `Buffer` instances created in this way is not initialized. > **The contents of a newly created `Buffer` are unknown and could contain sensitive > data.** Use `buf.fill(0)` to initialize a Buffer to zeroes. (Emphasis our own.) Whenever the programmer intended to create an uninitialized `Buffer` you often see code like this: ```js var buf = new Buffer(16) // Immediately overwrite the uninitialized buffer with data from another buffer for (var i = 0; i < buf.length; i++) { buf[i] = otherBuf[i] } ``` ### Would this ever be a problem in real code? Yes. It's surprisingly common to forget to check the type of your variables in a dynamically-typed language like JavaScript. Usually the consequences of assuming the wrong type is that your program crashes with an uncaught exception. But the failure mode for forgetting to check the type of arguments to the `Buffer` constructor is more catastrophic. Here's an example of a vulnerable service that takes a JSON payload and converts it to hex: ```js // Take a JSON payload {str: "some string"} and convert it to hex var server = http.createServer(function (req, res) { var data = '' req.setEncoding('utf8') req.on('data', function (chunk) { data += chunk }) req.on('end', function () { var body = JSON.parse(data) res.end(new Buffer(body.str).toString('hex')) }) }) server.listen(8080) ``` In this example, an http client just has to send: ```json { "str": 1000 } ``` and it will get back 1,000 bytes of uninitialized memory from the server. This is a very serious bug. It's similar in severity to the [the Heartbleed bug](http://heartbleed.com/) that allowed disclosure of OpenSSL process memory by remote attackers. ### Which real-world packages were vulnerable? #### [`bittorrent-dht`](https://www.npmjs.com/package/bittorrent-dht) [Mathias Buus](https://github.com/mafintosh) and I ([Feross Aboukhadijeh](http://feross.org/)) found this issue in one of our own packages, [`bittorrent-dht`](https://www.npmjs.com/package/bittorrent-dht). The bug would allow anyone on the internet to send a series of messages to a user of `bittorrent-dht` and get them to reveal 20 bytes at a time of uninitialized memory from the node.js process. Here's [the commit](https://github.com/feross/bittorrent-dht/commit/6c7da04025d5633699800a99ec3fbadf70ad35b8) that fixed it. We released a new fixed version, created a [Node Security Project disclosure](https://nodesecurity.io/advisories/68), and deprecated all vulnerable versions on npm so users will get a warning to upgrade to a newer version. #### [`ws`](https://www.npmjs.com/package/ws) That got us wondering if there were other vulnerable packages. Sure enough, within a short period of time, we found the same issue in [`ws`](https://www.npmjs.com/package/ws), the most popular WebSocket implementation in node.js. If certain APIs were called with `Number` parameters instead of `String` or `Buffer` as expected, then uninitialized server memory would be disclosed to the remote peer. These were the vulnerable methods: ```js socket.send(number) socket.ping(number) socket.pong(number) ``` Here's a vulnerable socket server with some echo functionality: ```js server.on('connection', function (socket) { socket.on('message', function (message) { message = JSON.parse(message) if (message.type === 'echo') { socket.send(message.data) // send back the user's message } }) }) ``` `socket.send(number)` called on the server, will disclose server memory. Here's [the release](https://github.com/websockets/ws/releases/tag/1.0.1) where the issue was fixed, with a more detailed explanation. Props to [Arnout Kazemier](https://github.com/3rd-Eden) for the quick fix. Here's the [Node Security Project disclosure](https://nodesecurity.io/advisories/67). ### What's the solution? It's important that node.js offers a fast way to get memory otherwise performance-critical applications would needlessly get a lot slower. But we need a better way to *signal our intent* as programmers. **When we want uninitialized memory, we should request it explicitly.** Sensitive functionality should not be packed into a developer-friendly API that loosely accepts many different types. This type of API encourages the lazy practice of passing variables in without checking the type very carefully. #### A new API: `Buffer.allocUnsafe(number)` The functionality of creating buffers with uninitialized memory should be part of another API. We propose `Buffer.allocUnsafe(number)`. This way, it's not part of an API that frequently gets user input of all sorts of different types passed into it. ```js var buf = Buffer.allocUnsafe(16) // careful, uninitialized memory! // Immediately overwrite the uninitialized buffer with data from another buffer for (var i = 0; i < buf.length; i++) { buf[i] = otherBuf[i] } ``` ### How do we fix node.js core? We sent [a PR to node.js core](https://github.com/nodejs/node/pull/4514) (merged as `semver-major`) which defends against one case: ```js var str = 16 new Buffer(str, 'utf8') ``` In this situation, it's implied that the programmer intended the first argument to be a string, since they passed an encoding as a second argument. Today, node.js will allocate uninitialized memory in the case of `new Buffer(number, encoding)`, which is probably not what the programmer intended. But this is only a partial solution, since if the programmer does `new Buffer(variable)` (without an `encoding` parameter) there's no way to know what they intended. If `variable` is sometimes a number, then uninitialized memory will sometimes be returned. ### What's the real long-term fix? We could deprecate and remove `new Buffer(number)` and use `Buffer.allocUnsafe(number)` when we need uninitialized memory. But that would break 1000s of packages. ~~We believe the best solution is to:~~ ~~1. Change `new Buffer(number)` to return safe, zeroed-out memory~~ ~~2. Create a new API for creating uninitialized Buffers. We propose: `Buffer.allocUnsafe(number)`~~ #### Update We now support adding three new APIs: - `Buffer.from(value)` - convert from any type to a buffer - `Buffer.alloc(size)` - create a zero-filled buffer - `Buffer.allocUnsafe(size)` - create an uninitialized buffer with given size This solves the core problem that affected `ws` and `bittorrent-dht` which is `Buffer(variable)` getting tricked into taking a number argument. This way, existing code continues working and the impact on the npm ecosystem will be minimal. Over time, npm maintainers can migrate performance-critical code to use `Buffer.allocUnsafe(number)` instead of `new Buffer(number)`. ### Conclusion We think there's a serious design issue with the `Buffer` API as it exists today. It promotes insecure software by putting high-risk functionality into a convenient API with friendly "developer ergonomics". This wasn't merely a theoretical exercise because we found the issue in some of the most popular npm packages. Fortunately, there's an easy fix that can be applied today. Use `safe-buffer` in place of `buffer`. ```js var Buffer = require('safe-buffer').Buffer ``` Eventually, we hope that node.js core can switch to this new, safer behavior. We believe the impact on the ecosystem would be minimal since it's not a breaking change. Well-maintained, popular packages would be updated to use `Buffer.alloc` quickly, while older, insecure packages would magically become safe from this attack vector. ## links - [Node.js PR: buffer: throw if both length and enc are passed](https://github.com/nodejs/node/pull/4514) - [Node Security Project disclosure for `ws`](https://nodesecurity.io/advisories/67) - [Node Security Project disclosure for`bittorrent-dht`](https://nodesecurity.io/advisories/68) ## credit The original issues in `bittorrent-dht` ([disclosure](https://nodesecurity.io/advisories/68)) and `ws` ([disclosure](https://nodesecurity.io/advisories/67)) were discovered by [Mathias Buus](https://github.com/mafintosh) and [Feross Aboukhadijeh](http://feross.org/). Thanks to [Adam Baldwin](https://github.com/evilpacket) for helping disclose these issues and for his work running the [Node Security Project](https://nodesecurity.io/). Thanks to [John Hiesey](https://github.com/jhiesey) for proofreading this README and auditing the code. ## license MIT. Copyright (C) [Feross Aboukhadijeh](http://feross.org) # fast-json-stable-stringify Deterministic `JSON.stringify()` - a faster version of [@substack](https://github.com/substack)'s json-stable-strigify without [jsonify](https://github.com/substack/jsonify). You can also pass in a custom comparison function. [](https://travis-ci.org/epoberezkin/fast-json-stable-stringify) [](https://coveralls.io/github/epoberezkin/fast-json-stable-stringify?branch=master) # example ``` js var stringify = require('fast-json-stable-stringify'); var obj = { c: 8, b: [{z:6,y:5,x:4},7], a: 3 }; console.log(stringify(obj)); ``` output: ``` {"a":3,"b":[{"x":4,"y":5,"z":6},7],"c":8} ``` # methods ``` js var stringify = require('fast-json-stable-stringify') ``` ## var str = stringify(obj, opts) Return a deterministic stringified string `str` from the object `obj`. ## options ### cmp If `opts` is given, you can supply an `opts.cmp` to have a custom comparison function for object keys. Your function `opts.cmp` is called with these parameters: ``` js opts.cmp({ key: akey, value: avalue }, { key: bkey, value: bvalue }) ``` For example, to sort on the object key names in reverse order you could write: ``` js var stringify = require('fast-json-stable-stringify'); var obj = { c: 8, b: [{z:6,y:5,x:4},7], a: 3 }; var s = stringify(obj, function (a, b) { return a.key < b.key ? 1 : -1; }); console.log(s); ``` which results in the output string: ``` {"c":8,"b":[{"z":6,"y":5,"x":4},7],"a":3} ``` Or if you wanted to sort on the object values in reverse order, you could write: ``` var stringify = require('fast-json-stable-stringify'); var obj = { d: 6, c: 5, b: [{z:3,y:2,x:1},9], a: 10 }; var s = stringify(obj, function (a, b) { return a.value < b.value ? 1 : -1; }); console.log(s); ``` which outputs: ``` {"d":6,"c":5,"b":[{"z":3,"y":2,"x":1},9],"a":10} ``` ### cycles Pass `true` in `opts.cycles` to stringify circular property as `__cycle__` - the result will not be a valid JSON string in this case. TypeError will be thrown in case of circular object without this option. # install With [npm](https://npmjs.org) do: ``` npm install fast-json-stable-stringify ``` # benchmark To run benchmark (requires Node.js 6+): ``` node benchmark ``` Results: ``` fast-json-stable-stringify x 17,189 ops/sec ±1.43% (83 runs sampled) json-stable-stringify x 13,634 ops/sec ±1.39% (85 runs sampled) fast-stable-stringify x 20,212 ops/sec ±1.20% (84 runs sampled) faster-stable-stringify x 15,549 ops/sec ±1.12% (84 runs sampled) The fastest is fast-stable-stringify ``` ## Enterprise support fast-json-stable-stringify package is a part of [Tidelift enterprise subscription](https://tidelift.com/subscription/pkg/npm-fast-json-stable-stringify?utm_source=npm-fast-json-stable-stringify&utm_medium=referral&utm_campaign=enterprise&utm_term=repo) - it provides a centralised commercial support to open-source software users, in addition to the support provided by software maintainers. ## Security contact To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. Please do NOT report security vulnerability via GitHub issues. # license [MIT](https://github.com/epoberezkin/fast-json-stable-stringify/blob/master/LICENSE) # Statuses [![NPM Version][npm-image]][npm-url] [![NPM Downloads][downloads-image]][downloads-url] [![Node.js Version][node-version-image]][node-version-url] [![Build Status][travis-image]][travis-url] [![Test Coverage][coveralls-image]][coveralls-url] HTTP status utility for node. This module provides a list of status codes and messages sourced from a few different projects: * The [IANA Status Code Registry](https://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml) * The [Node.js project](https://nodejs.org/) * The [NGINX project](https://www.nginx.com/) * The [Apache HTTP Server project](https://httpd.apache.org/) ## Installation This is a [Node.js](https://nodejs.org/en/) module available through the [npm registry](https://www.npmjs.com/). Installation is done using the [`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally): ```sh $ npm install statuses ``` ## API <!-- eslint-disable no-unused-vars --> ```js var status = require('statuses') ``` ### var code = status(Integer || String) If `Integer` or `String` is a valid HTTP code or status message, then the appropriate `code` will be returned. Otherwise, an error will be thrown. <!-- eslint-disable no-undef --> ```js status(403) // => 403 status('403') // => 403 status('forbidden') // => 403 status('Forbidden') // => 403 status(306) // throws, as it's not supported by node.js ``` ### status.STATUS_CODES Returns an object which maps status codes to status messages, in the same format as the [Node.js http module](https://nodejs.org/dist/latest/docs/api/http.html#http_http_status_codes). ### status.codes Returns an array of all the status codes as `Integer`s. ### var msg = status[code] Map of `code` to `status message`. `undefined` for invalid `code`s. <!-- eslint-disable no-undef, no-unused-expressions --> ```js status[404] // => 'Not Found' ``` ### var code = status[msg] Map of `status message` to `code`. `msg` can either be title-cased or lower-cased. `undefined` for invalid `status message`s. <!-- eslint-disable no-undef, no-unused-expressions --> ```js status['not found'] // => 404 status['Not Found'] // => 404 ``` ### status.redirect[code] Returns `true` if a status code is a valid redirect status. <!-- eslint-disable no-undef, no-unused-expressions --> ```js status.redirect[200] // => undefined status.redirect[301] // => true ``` ### status.empty[code] Returns `true` if a status code expects an empty body. <!-- eslint-disable no-undef, no-unused-expressions --> ```js status.empty[200] // => undefined status.empty[204] // => true status.empty[304] // => true ``` ### status.retry[code] Returns `true` if you should retry the rest. <!-- eslint-disable no-undef, no-unused-expressions --> ```js status.retry[501] // => undefined status.retry[503] // => true ``` [npm-image]: https://img.shields.io/npm/v/statuses.svg [npm-url]: https://npmjs.org/package/statuses [node-version-image]: https://img.shields.io/node/v/statuses.svg [node-version-url]: https://nodejs.org/en/download [travis-image]: https://img.shields.io/travis/jshttp/statuses.svg [travis-url]: https://travis-ci.org/jshttp/statuses [coveralls-image]: https://img.shields.io/coveralls/jshttp/statuses.svg [coveralls-url]: https://coveralls.io/r/jshttp/statuses?branch=master [downloads-image]: https://img.shields.io/npm/dm/statuses.svg [downloads-url]: https://npmjs.org/package/statuses # ts-mixer [version-badge]: https://badgen.net/npm/v/ts-mixer [version-link]: https://npmjs.com/package/ts-mixer [build-badge]: https://img.shields.io/github/workflow/status/tannerntannern/ts-mixer/ts-mixer%20CI [build-link]: https://github.com/tannerntannern/ts-mixer/actions [ts-versions]: https://badgen.net/badge/icon/3.8,3.9,4.0,4.1,4.2?icon=typescript&label&list=| [node-versions]: https://badgen.net/badge/node/10%2C12%2C14/blue/?list=| [![npm version][version-badge]][version-link] [![github actions][build-badge]][build-link] [![TS Versions][ts-versions]][build-link] [![Node.js Versions][node-versions]][build-link] [](https://bundlephobia.com/result?p=ts-mixer) [](https://conventionalcommits.org) ## Overview `ts-mixer` brings mixins to TypeScript. "Mixins" to `ts-mixer` are just classes, so you already know how to write them, and you can probably mix classes from your favorite library without trouble. The mixin problem is more nuanced than it appears. I've seen countless code snippets that work for certain situations, but fail in others. `ts-mixer` tries to take the best from all these solutions while accounting for the situations you might not have considered. [Quick start guide](#quick-start) ### Features * mixes plain classes * mixes classes that extend other classes * mixes classes that were mixed with `ts-mixer` * supports static properties * supports protected/private properties (the popular function-that-returns-a-class solution does not) * mixes abstract classes (with caveats [[1](#caveats)]) * mixes generic classes (with caveats [[2](#caveats)]) * supports class, method, and property decorators (with caveats [[3, 6](#caveats)]) * mostly supports the complexity presented by constructor functions (with caveats [[4](#caveats)]) * comes with an `instanceof`-like replacement (with caveats [[5, 6](#caveats)]) * [multiple mixing strategies](#settings) (ES6 proxies vs hard copy) ### Caveats 1. Mixing abstract classes requires a bit of a hack that may break in future versions of TypeScript. See [mixing abstract classes](#mixing-abstract-classes) below. 2. Mixing generic classes requires a more cumbersome notation, but it's still possible. See [mixing generic classes](#mixing-generic-classes) below. 3. Using decorators in mixed classes also requires a more cumbersome notation. See [mixing with decorators](#mixing-with-decorators) below. 4. ES6 made it impossible to use `.apply(...)` on class constructors (or any means of calling them without `new`), which makes it impossible for `ts-mixer` to pass the proper `this` to your constructors. This may or may not be an issue for your code, but there are options to work around it. See [dealing with constructors](#dealing-with-constructors) below. 5. `ts-mixer` does not support `instanceof` for mixins, but it does offer a replacement. See the [hasMixin function](#hasmixin) for more details. 6. Certain features (specifically, `@decorator` and `hasMixin`) make use of ES6 `Map`s, which means you must either use ES6+ or polyfill `Map` to use them. If you don't need these features, you should be fine without. ## Quick Start ### Installation ``` $ npm install ts-mixer ``` or if you prefer [Yarn](https://yarnpkg.com): ``` $ yarn add ts-mixer ``` ### Basic Example ```typescript import { Mixin } from 'ts-mixer'; class Foo { protected makeFoo() { return 'foo'; } } class Bar { protected makeBar() { return 'bar'; } } class FooBar extends Mixin(Foo, Bar) { public makeFooBar() { return this.makeFoo() + this.makeBar(); } } const fooBar = new FooBar(); console.log(fooBar.makeFooBar()); // "foobar" ``` ## Special Cases ### Mixing Abstract Classes Abstract classes, by definition, cannot be constructed, which means they cannot take on the type, `new(...args) => any`, and by extension, are incompatible with `ts-mixer`. BUT, you can "trick" TypeScript into giving you all the benefits of an abstract class without making it technically abstract. The trick is just some strategic `// @ts-ignore`'s: ```typescript import { Mixin } from 'ts-mixer'; // note that Foo is not marked as an abstract class class Foo { // @ts-ignore: "Abstract methods can only appear within an abstract class" public abstract makeFoo(): string; } class Bar { public makeBar() { return 'bar'; } } class FooBar extends Mixin(Foo, Bar) { // we still get all the benefits of abstract classes here, because TypeScript // will still complain if this method isn't implemented public makeFoo() { return 'foo'; } } ``` Do note that while this does work quite well, it is a bit of a hack and I can't promise that it will continue to work in future TypeScript versions. ### Mixing Generic Classes Frustratingly, it is _impossible_ for generic parameters to be referenced in base class expressions. No matter what, you will eventually run into `Base class expressions cannot reference class type parameters.` The way to get around this is to leverage [declaration merging](https://www.typescriptlang.org/docs/handbook/declaration-merging.html), and a slightly different mixing function from ts-mixer: `mix`. It works exactly like `Mixin`, except it's a decorator, which means it doesn't affect the type information of the class being decorated. See it in action below: ```typescript import { mix } from 'ts-mixer'; class Foo<T> { public fooMethod(input: T): T { return input; } } class Bar<T> { public barMethod(input: T): T { return input; } } interface FooBar<T1, T2> extends Foo<T1>, Bar<T2> { } @mix(Foo, Bar) class FooBar<T1, T2> { public fooBarMethod(input1: T1, input2: T2) { return [this.fooMethod(input1), this.barMethod(input2)]; } } ``` Key takeaways from this example: * `interface FooBar<T1, T2> extends Foo<T1>, Bar<T2> { }` makes sure `FooBar` has the typing we want, thanks to declaration merging * `@mix(Foo, Bar)` wires things up "on the JavaScript side", since the interface declaration has nothing to do with runtime behavior. * The reason we have to use the `mix` decorator is that the typing produced by `Mixin(Foo, Bar)` would conflict with the typing of the interface. `mix` has no effect "on the TypeScript side," thus avoiding type conflicts. ### Mixing with Decorators Popular libraries such as [class-validator](https://github.com/typestack/class-validator) and [TypeORM](https://github.com/typeorm/typeorm) use decorators to add functionality. Unfortunately, `ts-mixer` has no way of knowing what these libraries do with the decorators behind the scenes. So if you want these decorators to be "inherited" with classes you plan to mix, you first have to wrap them with a special `decorate` function exported by `ts-mixer`. Here's an example using `class-validator`: ```typescript import { IsBoolean, IsIn, validate } from 'class-validator'; import { Mixin, decorate } from 'ts-mixer'; class Disposable { @decorate(IsBoolean()) // instead of @IsBoolean() isDisposed: boolean = false; } class Statusable { @decorate(IsIn(['red', 'green'])) // instead of @IsIn(['red', 'green']) status: string = 'green'; } class ExtendedObject extends Mixin(Disposable, Statusable) {} const extendedObject = new ExtendedObject(); extendedObject.status = 'blue'; validate(extendedObject).then(errors => { console.log(errors); }); ``` ### Dealing with Constructors As mentioned in the [caveats section](#caveats), ES6 disallowed calling constructor functions without `new`. This means that the only way for `ts-mixer` to mix instance properties is to instantiate each base class separately, then copy the instance properties into a common object. The consequence of this is that constructors mixed by `ts-mixer` will _not_ receive the proper `this`. **This very well may not be an issue for you!** It only means that your constructors need to be "mostly pure" in terms of how they handle `this`. Specifically, your constructors cannot produce [side effects](https://en.wikipedia.org/wiki/Side_effect_%28computer_science%29) involving `this`, _other than adding properties to `this`_ (the most common side effect in JavaScript constructors). If you simply cannot eliminate `this` side effects from your constructor, there is a workaround available: `ts-mixer` will automatically forward constructor parameters to a predesignated init function (`settings.initFunction`) if it's present on the class. Unlike constructors, functions can be called with an arbitrary `this`, so this predesignated init function _will_ have the proper `this`. Here's a basic example: ```typescript import { Mixin, settings } from 'ts-mixer'; settings.initFunction = 'init'; class Person { public static allPeople: Set<Person> = new Set(); protected init() { Person.allPeople.add(this); } } type PartyAffiliation = 'democrat' | 'republican'; class PoliticalParticipant { public static democrats: Set<PoliticalParticipant> = new Set(); public static republicans: Set<PoliticalParticipant> = new Set(); public party: PartyAffiliation; // note that these same args will also be passed to init function public constructor(party: PartyAffiliation) { this.party = party; } protected init(party: PartyAffiliation) { if (party === 'democrat') PoliticalParticipant.democrats.add(this); else PoliticalParticipant.republicans.add(this); } } class Voter extends Mixin(Person, PoliticalParticipant) {} const v1 = new Voter('democrat'); const v2 = new Voter('democrat'); const v3 = new Voter('republican'); const v4 = new Voter('republican'); ``` Note the above `.add(this)` statements. These would not work as expected if they were placed in the constructor instead, since `this` is not the same between the constructor and `init`, as explained above. ## Other Features ### hasMixin As mentioned above, `ts-mixer` does not support `instanceof` for mixins. While it is possible to implement [custom `instanceof` behavior](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol/hasInstance), this library does not do so because it would require modifying the source classes, which is deliberately avoided. You can fill this missing functionality with `hasMixin(instance, mixinClass)` instead. See the below example: ```typescript import { Mixin, hasMixin } from 'ts-mixer'; class Foo {} class Bar {} class FooBar extends Mixin(Foo, Bar) {} const instance = new FooBar(); // doesn't work with instanceof... console.log(instance instanceof FooBar) // true console.log(instance instanceof Foo) // false console.log(instance instanceof Bar) // false // but everything works nicely with hasMixin! console.log(hasMixin(instance, FooBar)) // true console.log(hasMixin(instance, Foo)) // true console.log(hasMixin(instance, Bar)) // true ``` `hasMixin(instance, mixinClass)` will work anywhere that `instance instanceof mixinClass` works. Additionally, like `instanceof`, you get the same [type narrowing benefits](https://www.typescriptlang.org/docs/handbook/advanced-types.html#instanceof-type-guards): ```typescript if (hasMixin(instance, Foo)) { // inferred type of instance is "Foo" } if (hasMixin(instance, Bar)) { // inferred type of instance of "Bar" } ``` ## Settings ts-mixer has multiple strategies for mixing classes which can be configured by modifying `settings` from ts-mixer. For example: ```typescript import { settings, Mixin } from 'ts-mixer'; settings.prototypeStrategy = 'proxy'; // then use `Mixin` as normal... ``` ### `settings.prototypeStrategy` * Determines how ts-mixer will mix class prototypes together * Possible values: - `'copy'` (default) - Copies all methods from the classes being mixed into a new prototype object. (This will include all methods up the prototype chains as well.) This is the default for ES5 compatibility, but it has the downside of stale references. For example, if you mix `Foo` and `Bar` to make `FooBar`, then redefine a method on `Foo`, `FooBar` will not have the latest methods from `Foo`. If this is not a concern for you, `'copy'` is the best value for this setting. - `'proxy'` - Uses an ES6 Proxy to "soft mix" prototypes. Unlike `'copy'`, updates to the base classes _will_ be reflected in the mixed class, which may be desirable. The downside is that method access is not as performant, nor is it ES5 compatible. ### `settings.staticsStrategy` * Determines how static properties are inherited * Possible values: - `'copy'` (default) - Simply copies all properties (minus `prototype`) from the base classes/constructor functions onto the mixed class. Like `settings.prototypeStrategy = 'copy'`, this strategy also suffers from stale references, but shouldn't be a concern if you don't redefine static methods after mixing. - `'proxy'` - Similar to `settings.prototypeStrategy`, proxy's static method access to base classes. Has the same benefits/downsides. ### `settings.initFunction` * If set, `ts-mixer` will automatically call the function with this name upon construction * Possible values: - `null` (default) - disables the behavior - a string - function name to call upon construction * Read more about why you would want this in [dealing with constructors](#dealing-with-constructors) ### `settings.decoratorInheritance` * Determines how decorators are inherited from classes passed to `Mixin(...)` * Possible values: - `'deep'` (default) - Deeply inherits decorators from all given classes and their ancestors - `'direct'` - Only inherits decorators defined directly on the given classes - `'none'` - Skips decorator inheritance # Author Tanner Nielsen <tannerntannern@gmail.com> * Website - [tannernielsen.com](http://tannernielsen.com) * Github - [tannerntannern](https://github.com/tannerntannern) tunnel-agent ============ HTTP proxy tunneling agent. Formerly part of mikeal/request, now a standalone module. # libusb [](https://travis-ci.org/libusb/libusb) [](https://ci.appveyor.com/project/LudovicRousseau/libusb) [](https://scan.coverity.com/projects/libusb-libusb) libusb is a library for USB device access from Linux, macOS, Windows, OpenBSD/NetBSD and Haiku userspace. It is written in C (Haiku backend in C++) and licensed under the GNU Lesser General Public License version 2.1 or, at your option, any later version (see [COPYING](COPYING)). libusb is abstracted internally in such a way that it can hopefully be ported to other operating systems. Please see the [PORTING](PORTING) file for more information. libusb homepage: http://libusb.info/ Developers will wish to consult the API documentation: http://api.libusb.info Use the mailing list for questions, comments, etc: http://mailing-list.libusb.info - Hans de Goede <hdegoede@redhat.com> - Xiaofan Chen <xiaofanc@gmail.com> - Ludovic Rousseau <ludovic.rousseau@gmail.com> - Nathan Hjelm <hjelmn@cs.unm.edu> - Chris Dickens <christopher.a.dickens@gmail.com> (Please use the mailing list rather than mailing developers directly) # regexpp [](https://www.npmjs.com/package/regexpp) [](http://www.npmtrends.com/regexpp) [](https://github.com/mysticatea/regexpp/actions) [](https://codecov.io/gh/mysticatea/regexpp) [](https://david-dm.org/mysticatea/regexpp) A regular expression parser for ECMAScript. ## 💿 Installation ```bash $ npm install regexpp ``` - require Node.js 8 or newer. ## 📖 Usage ```ts import { AST, RegExpParser, RegExpValidator, RegExpVisitor, parseRegExpLiteral, validateRegExpLiteral, visitRegExpAST } from "regexpp" ``` ### parseRegExpLiteral(source, options?) Parse a given regular expression literal then make AST object. This is equivalent to `new RegExpParser(options).parseLiteral(source)`. - **Parameters:** - `source` (`string | RegExp`) The source code to parse. - `options?` ([`RegExpParser.Options`]) The options to parse. - **Return:** - The AST of the regular expression. ### validateRegExpLiteral(source, options?) Validate a given regular expression literal. This is equivalent to `new RegExpValidator(options).validateLiteral(source)`. - **Parameters:** - `source` (`string`) The source code to validate. - `options?` ([`RegExpValidator.Options`]) The options to validate. ### visitRegExpAST(ast, handlers) Visit each node of a given AST. This is equivalent to `new RegExpVisitor(handlers).visit(ast)`. - **Parameters:** - `ast` ([`AST.Node`]) The AST to visit. - `handlers` ([`RegExpVisitor.Handlers`]) The callbacks. ### RegExpParser #### new RegExpParser(options?) - **Parameters:** - `options?` ([`RegExpParser.Options`]) The options to parse. #### parser.parseLiteral(source, start?, end?) Parse a regular expression literal. - **Parameters:** - `source` (`string`) The source code to parse. E.g. `"/abc/g"`. - `start?` (`number`) The start index in the source code. Default is `0`. - `end?` (`number`) The end index in the source code. Default is `source.length`. - **Return:** - The AST of the regular expression. #### parser.parsePattern(source, start?, end?, uFlag?) Parse a regular expression pattern. - **Parameters:** - `source` (`string`) The source code to parse. E.g. `"abc"`. - `start?` (`number`) The start index in the source code. Default is `0`. - `end?` (`number`) The end index in the source code. Default is `source.length`. - `uFlag?` (`boolean`) The flag to enable Unicode mode. - **Return:** - The AST of the regular expression pattern. #### parser.parseFlags(source, start?, end?) Parse a regular expression flags. - **Parameters:** - `source` (`string`) The source code to parse. E.g. `"gim"`. - `start?` (`number`) The start index in the source code. Default is `0`. - `end?` (`number`) The end index in the source code. Default is `source.length`. - **Return:** - The AST of the regular expression flags. ### RegExpValidator #### new RegExpValidator(options) - **Parameters:** - `options` ([`RegExpValidator.Options`]) The options to validate. #### validator.validateLiteral(source, start, end) Validate a regular expression literal. - **Parameters:** - `source` (`string`) The source code to validate. - `start?` (`number`) The start index in the source code. Default is `0`. - `end?` (`number`) The end index in the source code. Default is `source.length`. #### validator.validatePattern(source, start, end, uFlag) Validate a regular expression pattern. - **Parameters:** - `source` (`string`) The source code to validate. - `start?` (`number`) The start index in the source code. Default is `0`. - `end?` (`number`) The end index in the source code. Default is `source.length`. - `uFlag?` (`boolean`) The flag to enable Unicode mode. #### validator.validateFlags(source, start, end) Validate a regular expression flags. - **Parameters:** - `source` (`string`) The source code to validate. - `start?` (`number`) The start index in the source code. Default is `0`. - `end?` (`number`) The end index in the source code. Default is `source.length`. ### RegExpVisitor #### new RegExpVisitor(handlers) - **Parameters:** - `handlers` ([`RegExpVisitor.Handlers`]) The callbacks. #### visitor.visit(ast) Validate a regular expression literal. - **Parameters:** - `ast` ([`AST.Node`]) The AST to visit. ## 📰 Changelog - [GitHub Releases](https://github.com/mysticatea/regexpp/releases) ## 🍻 Contributing Welcome contributing! Please use GitHub's Issues/PRs. ### Development Tools - `npm test` runs tests and measures coverage. - `npm run build` compiles TypeScript source code to `index.js`, `index.js.map`, and `index.d.ts`. - `npm run clean` removes the temporary files which are created by `npm test` and `npm run build`. - `npm run lint` runs ESLint. - `npm run update:test` updates test fixtures. - `npm run update:ids` updates `src/unicode/ids.ts`. - `npm run watch` runs tests with `--watch` option. [`AST.Node`]: src/ast.ts#L4 [`RegExpParser.Options`]: src/parser.ts#L539 [`RegExpValidator.Options`]: src/validator.ts#L127 [`RegExpVisitor.Handlers`]: src/visitor.ts#L204 # lodash.truncate v4.4.2 The [lodash](https://lodash.com/) method `_.truncate` exported as a [Node.js](https://nodejs.org/) module. ## Installation Using npm: ```bash $ {sudo -H} npm i -g npm $ npm i --save lodash.truncate ``` In Node.js: ```js var truncate = require('lodash.truncate'); ``` See the [documentation](https://lodash.com/docs#truncate) or [package source](https://github.com/lodash/lodash/blob/4.4.2-npm-packages/lodash.truncate) for more details. # Can I cache this? [](https://travis-ci.org/kornelski/http-cache-semantics) `CachePolicy` tells when responses can be reused from a cache, taking into account [HTTP RFC 7234](http://httpwg.org/specs/rfc7234.html) rules for user agents and shared caches. It also implements [RFC 5861](https://tools.ietf.org/html/rfc5861), implementing `stale-if-error` and `stale-while-revalidate`. It's aware of many tricky details such as the `Vary` header, proxy revalidation, and authenticated responses. ## Usage Cacheability of an HTTP response depends on how it was requested, so both `request` and `response` are required to create the policy. ```js const policy = new CachePolicy(request, response, options); if (!policy.storable()) { // throw the response away, it's not usable at all return; } // Cache the data AND the policy object in your cache // (this is pseudocode, roll your own cache (lru-cache package works)) letsPretendThisIsSomeCache.set( request.url, { policy, response }, policy.timeToLive() ); ``` ```js // And later, when you receive a new request: const { policy, response } = letsPretendThisIsSomeCache.get(newRequest.url); // It's not enough that it exists in the cache, it has to match the new request, too: if (policy && policy.satisfiesWithoutRevalidation(newRequest)) { // OK, the previous response can be used to respond to the `newRequest`. // Response headers have to be updated, e.g. to add Age and remove uncacheable headers. response.headers = policy.responseHeaders(); return response; } ``` It may be surprising, but it's not enough for an HTTP response to be [fresh](#yo-fresh) to satisfy a request. It may need to match request headers specified in `Vary`. Even a matching fresh response may still not be usable if the new request restricted cacheability, etc. The key method is `satisfiesWithoutRevalidation(newRequest)`, which checks whether the `newRequest` is compatible with the original request and whether all caching conditions are met. ### Constructor options Request and response must have a `headers` property with all header names in lower case. `url`, `status` and `method` are optional (defaults are any URL, status `200`, and `GET` method). ```js const request = { url: '/', method: 'GET', headers: { accept: '*/*', }, }; const response = { status: 200, headers: { 'cache-control': 'public, max-age=7234', }, }; const options = { shared: true, cacheHeuristic: 0.1, immutableMinTimeToLive: 24 * 3600 * 1000, // 24h ignoreCargoCult: false, }; ``` If `options.shared` is `true` (default), then the response is evaluated from a perspective of a shared cache (i.e. `private` is not cacheable and `s-maxage` is respected). If `options.shared` is `false`, then the response is evaluated from a perspective of a single-user cache (i.e. `private` is cacheable and `s-maxage` is ignored). `shared: true` is recommended for HTTP clients. `options.cacheHeuristic` is a fraction of response's age that is used as a fallback cache duration. The default is 0.1 (10%), e.g. if a file hasn't been modified for 100 days, it'll be cached for 100\*0.1 = 10 days. `options.immutableMinTimeToLive` is a number of milliseconds to assume as the default time to cache responses with `Cache-Control: immutable`. Note that [per RFC](http://httpwg.org/http-extensions/immutable.html) these can become stale, so `max-age` still overrides the default. If `options.ignoreCargoCult` is true, common anti-cache directives will be completely ignored if the non-standard `pre-check` and `post-check` directives are present. These two useless directives are most commonly found in bad StackOverflow answers and PHP's "session limiter" defaults. ### `storable()` Returns `true` if the response can be stored in a cache. If it's `false` then you MUST NOT store either the request or the response. ### `satisfiesWithoutRevalidation(newRequest)` This is the most important method. Use this method to check whether the cached response is still fresh in the context of the new request. If it returns `true`, then the given `request` matches the original response this cache policy has been created with, and the response can be reused without contacting the server. Note that the old response can't be returned without being updated, see `responseHeaders()`. If it returns `false`, then the response may not be matching at all (e.g. it's for a different URL or method), or may require to be refreshed first (see `revalidationHeaders()`). ### `responseHeaders()` Returns updated, filtered set of response headers to return to clients receiving the cached response. This function is necessary, because proxies MUST always remove hop-by-hop headers (such as `TE` and `Connection`) and update response's `Age` to avoid doubling cache time. ```js cachedResponse.headers = cachePolicy.responseHeaders(cachedResponse); ``` ### `timeToLive()` Returns approximate time in _milliseconds_ until the response becomes stale (i.e. not fresh). After that time (when `timeToLive() <= 0`) the response might not be usable without revalidation. However, there are exceptions, e.g. a client can explicitly allow stale responses, so always check with `satisfiesWithoutRevalidation()`. `stale-if-error` and `stale-while-revalidate` extend the time to live of the cache, that can still be used if stale. ### `toObject()`/`fromObject(json)` Chances are you'll want to store the `CachePolicy` object along with the cached response. `obj = policy.toObject()` gives a plain JSON-serializable object. `policy = CachePolicy.fromObject(obj)` creates an instance from it. ### Refreshing stale cache (revalidation) When a cached response has expired, it can be made fresh again by making a request to the origin server. The server may respond with status 304 (Not Modified) without sending the response body again, saving bandwidth. The following methods help perform the update efficiently and correctly. #### `revalidationHeaders(newRequest)` Returns updated, filtered set of request headers to send to the origin server to check if the cached response can be reused. These headers allow the origin server to return status 304 indicating the response is still fresh. All headers unrelated to caching are passed through as-is. Use this method when updating cache from the origin server. ```js updateRequest.headers = cachePolicy.revalidationHeaders(updateRequest); ``` #### `revalidatedPolicy(revalidationRequest, revalidationResponse)` Use this method to update the cache after receiving a new response from the origin server. It returns an object with two keys: - `policy` — A new `CachePolicy` with HTTP headers updated from `revalidationResponse`. You can always replace the old cached `CachePolicy` with the new one. - `modified` — Boolean indicating whether the response body has changed. - If `false`, then a valid 304 Not Modified response has been received, and you can reuse the old cached response body. This is also affected by `stale-if-error`. - If `true`, you should use new response's body (if present), or make another request to the origin server without any conditional headers (i.e. don't use `revalidationHeaders()` this time) to get the new resource. ```js // When serving requests from cache: const { oldPolicy, oldResponse } = letsPretendThisIsSomeCache.get( newRequest.url ); if (!oldPolicy.satisfiesWithoutRevalidation(newRequest)) { // Change the request to ask the origin server if the cached response can be used newRequest.headers = oldPolicy.revalidationHeaders(newRequest); // Send request to the origin server. The server may respond with status 304 const newResponse = await makeRequest(newRequest); // Create updated policy and combined response from the old and new data const { policy, modified } = oldPolicy.revalidatedPolicy( newRequest, newResponse ); const response = modified ? newResponse : oldResponse; // Update the cache with the newer/fresher response letsPretendThisIsSomeCache.set( newRequest.url, { policy, response }, policy.timeToLive() ); // And proceed returning cached response as usual response.headers = policy.responseHeaders(); return response; } ``` # Yo, FRESH  ## Used by - [ImageOptim API](https://imageoptim.com/api), [make-fetch-happen](https://github.com/zkat/make-fetch-happen), [cacheable-request](https://www.npmjs.com/package/cacheable-request) ([got](https://www.npmjs.com/package/got)), [npm/registry-fetch](https://github.com/npm/registry-fetch), [etc.](https://github.com/kornelski/http-cache-semantics/network/dependents) ## Implemented - `Cache-Control` response header with all the quirks. - `Expires` with check for bad clocks. - `Pragma` response header. - `Age` response header. - `Vary` response header. - Default cacheability of statuses and methods. - Requests for stale data. - Filtering of hop-by-hop headers. - Basic revalidation request - `stale-if-error` ## Unimplemented - Merging of range requests, `If-Range` (but correctly supports them as non-cacheable) - Revalidation of multiple representations ### Trusting server `Date` Per the RFC, the cache should take into account the time between server-supplied `Date` and the time it received the response. The RFC-mandated behavior creates two problems: * Servers with incorrectly set timezone may add several hours to cache age (or more, if the clock is completely wrong). * Even reasonably correct clocks may be off by a couple of seconds, breaking `max-age=1` trick (which is useful for reverse proxies on high-traffic servers). Previous versions of this library had an option to ignore the server date if it was "too inaccurate". To support the `max-age=1` trick the library also has to ignore dates that pretty accurate. There's no point of having an option to trust dates that are only a bit inaccurate, so this library won't trust any server dates. `max-age` will be interpreted from the time the response has been received, not from when it has been sent. This will affect only [RFC 1149 networks](https://tools.ietf.org/html/rfc1149). Like `chown -R`. Takes the same arguments as `fs.chown()` # axios // adapters The modules under `adapters/` are modules that handle dispatching a request and settling a returned `Promise` once a response is received. ## Example ```js var settle = require('./../core/settle'); module.exports = function myAdapter(config) { // At this point: // - config has been merged with defaults // - request transformers have already run // - request interceptors have already run // Make the request using config provided // Upon response settle the Promise return new Promise(function(resolve, reject) { var response = { data: responseData, status: request.status, statusText: request.statusText, headers: responseHeaders, config: config, request: request }; settle(resolve, reject, response); // From here: // - response transformers will run // - response interceptors will run }); } ``` # md5.js [](https://www.npmjs.org/package/md5.js) [](https://travis-ci.org/crypto-browserify/md5.js) [](https://david-dm.org/crypto-browserify/md5.js#info=dependencies) [](https://github.com/feross/standard) Node style `md5` on pure JavaScript. From [NIST SP 800-131A][1]: *md5 is no longer acceptable where collision resistance is required such as digital signatures.* ## Example ```js var MD5 = require('md5.js') console.log(new MD5().update('42').digest('hex')) // => a1d0c6e83f027327d8461063f4ac58a6 var md5stream = new MD5() md5stream.end('42') console.log(md5stream.read().toString('hex')) // => a1d0c6e83f027327d8461063f4ac58a6 ``` ## LICENSE [MIT](LICENSE) [1]: http://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-131Ar1.pdf functional-red-black-tree ========================= A [fully persistent](http://en.wikipedia.org/wiki/Persistent_data_structure) [red-black tree](http://en.wikipedia.org/wiki/Red%E2%80%93black_tree) written 100% in JavaScript. Works both in node.js and in the browser via [browserify](http://browserify.org/). Functional (or fully presistent) data structures allow for non-destructive updates. So if you insert an element into the tree, it returns a new tree with the inserted element rather than destructively updating the existing tree in place. Doing this requires using extra memory, and if one were naive it could cost as much as reallocating the entire tree. Instead, this data structure saves some memory by recycling references to previously allocated subtrees. This requires using only O(log(n)) additional memory per update instead of a full O(n) copy. Some advantages of this is that it is possible to apply insertions and removals to the tree while still iterating over previous versions of the tree. Functional and persistent data structures can also be useful in many geometric algorithms like point location within triangulations or ray queries, and can be used to analyze the history of executing various algorithms. This added power though comes at a cost, since it is generally a bit slower to use a functional data structure than an imperative version. However, if your application needs this behavior then you may consider using this module. # Install npm install functional-red-black-tree # Example Here is an example of some basic usage: ```javascript //Load the library var createTree = require("functional-red-black-tree") //Create a tree var t1 = createTree() //Insert some items into the tree var t2 = t1.insert(1, "foo") var t3 = t2.insert(2, "bar") //Remove something var t4 = t3.remove(1) ``` # API ```javascript var createTree = require("functional-red-black-tree") ``` ## Overview - [Tree methods](#tree-methods) - [`var tree = createTree([compare])`](#var-tree-=-createtreecompare) - [`tree.keys`](#treekeys) - [`tree.values`](#treevalues) - [`tree.length`](#treelength) - [`tree.get(key)`](#treegetkey) - [`tree.insert(key, value)`](#treeinsertkey-value) - [`tree.remove(key)`](#treeremovekey) - [`tree.find(key)`](#treefindkey) - [`tree.ge(key)`](#treegekey) - [`tree.gt(key)`](#treegtkey) - [`tree.lt(key)`](#treeltkey) - [`tree.le(key)`](#treelekey) - [`tree.at(position)`](#treeatposition) - [`tree.begin`](#treebegin) - [`tree.end`](#treeend) - [`tree.forEach(visitor(key,value)[, lo[, hi]])`](#treeforEachvisitorkeyvalue-lo-hi) - [`tree.root`](#treeroot) - [Node properties](#node-properties) - [`node.key`](#nodekey) - [`node.value`](#nodevalue) - [`node.left`](#nodeleft) - [`node.right`](#noderight) - [Iterator methods](#iterator-methods) - [`iter.key`](#iterkey) - [`iter.value`](#itervalue) - [`iter.node`](#iternode) - [`iter.tree`](#itertree) - [`iter.index`](#iterindex) - [`iter.valid`](#itervalid) - [`iter.clone()`](#iterclone) - [`iter.remove()`](#iterremove) - [`iter.update(value)`](#iterupdatevalue) - [`iter.next()`](#iternext) - [`iter.prev()`](#iterprev) - [`iter.hasNext`](#iterhasnext) - [`iter.hasPrev`](#iterhasprev) ## Tree methods ### `var tree = createTree([compare])` Creates an empty functional tree * `compare` is an optional comparison function, same semantics as array.sort() **Returns** An empty tree ordered by `compare` ### `tree.keys` A sorted array of all the keys in the tree ### `tree.values` An array array of all the values in the tree ### `tree.length` The number of items in the tree ### `tree.get(key)` Retrieves the value associated to the given key * `key` is the key of the item to look up **Returns** The value of the first node associated to `key` ### `tree.insert(key, value)` Creates a new tree with the new pair inserted. * `key` is the key of the item to insert * `value` is the value of the item to insert **Returns** A new tree with `key` and `value` inserted ### `tree.remove(key)` Removes the first item with `key` in the tree * `key` is the key of the item to remove **Returns** A new tree with the given item removed if it exists ### `tree.find(key)` Returns an iterator pointing to the first item in the tree with `key`, otherwise `null`. ### `tree.ge(key)` Find the first item in the tree whose key is `>= key` * `key` is the key to search for **Returns** An iterator at the given element. ### `tree.gt(key)` Finds the first item in the tree whose key is `> key` * `key` is the key to search for **Returns** An iterator at the given element ### `tree.lt(key)` Finds the last item in the tree whose key is `< key` * `key` is the key to search for **Returns** An iterator at the given element ### `tree.le(key)` Finds the last item in the tree whose key is `<= key` * `key` is the key to search for **Returns** An iterator at the given element ### `tree.at(position)` Finds an iterator starting at the given element * `position` is the index at which the iterator gets created **Returns** An iterator starting at position ### `tree.begin` An iterator pointing to the first element in the tree ### `tree.end` An iterator pointing to the last element in the tree ### `tree.forEach(visitor(key,value)[, lo[, hi]])` Walks a visitor function over the nodes of the tree in order. * `visitor(key,value)` is a callback that gets executed on each node. If a truthy value is returned from the visitor, then iteration is stopped. * `lo` is an optional start of the range to visit (inclusive) * `hi` is an optional end of the range to visit (non-inclusive) **Returns** The last value returned by the callback ### `tree.root` Returns the root node of the tree ## Node properties Each node of the tree has the following properties: ### `node.key` The key associated to the node ### `node.value` The value associated to the node ### `node.left` The left subtree of the node ### `node.right` The right subtree of the node ## Iterator methods ### `iter.key` The key of the item referenced by the iterator ### `iter.value` The value of the item referenced by the iterator ### `iter.node` The value of the node at the iterator's current position. `null` is iterator is node valid. ### `iter.tree` The tree associated to the iterator ### `iter.index` Returns the position of this iterator in the sequence. ### `iter.valid` Checks if the iterator is valid ### `iter.clone()` Makes a copy of the iterator ### `iter.remove()` Removes the item at the position of the iterator **Returns** A new binary search tree with `iter`'s item removed ### `iter.update(value)` Updates the value of the node in the tree at this iterator **Returns** A new binary search tree with the corresponding node updated ### `iter.next()` Advances the iterator to the next position ### `iter.prev()` Moves the iterator backward one element ### `iter.hasNext` If true, then the iterator is not at the end of the sequence ### `iter.hasPrev` If true, then the iterator is not at the beginning of the sequence # Credits (c) 2013 Mikola Lysenko. MIT License # axios [](https://www.npmjs.org/package/axios) [](https://cdnjs.com/libraries/axios)  [](https://gitpod.io/#https://github.com/axios/axios) [](https://coveralls.io/r/mzabriskie/axios) [](https://packagephobia.now.sh/result?p=axios) [](http://npm-stat.com/charts.html?package=axios) [](https://gitter.im/mzabriskie/axios) [](https://www.codetriage.com/axios/axios) [](https://snyk.io/test/npm/axios) Promise based HTTP client for the browser and node.js > New axios docs website: [click here](https://axios-http.com/) ## Table of Contents - [Features](#features) - [Browser Support](#browser-support) - [Installing](#installing) - [Example](#example) - [Axios API](#axios-api) - [Request method aliases](#request-method-aliases) - [Concurrency 👎](#concurrency-deprecated) - [Creating an instance](#creating-an-instance) - [Instance methods](#instance-methods) - [Request Config](#request-config) - [Response Schema](#response-schema) - [Config Defaults](#config-defaults) - [Global axios defaults](#global-axios-defaults) - [Custom instance defaults](#custom-instance-defaults) - [Config order of precedence](#config-order-of-precedence) - [Interceptors](#interceptors) - [Multiple Interceptors](#multiple-interceptors) - [Handling Errors](#handling-errors) - [Cancellation](#cancellation) - [AbortController](#abortcontroller) - [CancelToken 👎](#canceltoken-deprecated) - [Using application/x-www-form-urlencoded format](#using-applicationx-www-form-urlencoded-format) - [Browser](#browser) - [Node.js](#nodejs) - [Query string](#query-string) - [Form data](#form-data) - [Automatic serialization](#-automatic-serialization) - [Manual FormData passing](#manual-formdata-passing) - [Semver](#semver) - [Promises](#promises) - [TypeScript](#typescript) - [Resources](#resources) - [Credits](#credits) - [License](#license) ## Features - Make [XMLHttpRequests](https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest) from the browser - Make [http](http://nodejs.org/api/http.html) requests from node.js - Supports the [Promise](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise) API - Intercept request and response - Transform request and response data - Cancel requests - Automatic transforms for JSON data - Client side support for protecting against [XSRF](http://en.wikipedia.org/wiki/Cross-site_request_forgery) ## Browser Support  |  |  |  |  |  | --- | --- | --- | --- | --- | --- | Latest ✔ | Latest ✔ | Latest ✔ | Latest ✔ | Latest ✔ | 11 ✔ | [](https://saucelabs.com/u/axios) ## Installing Using npm: ```bash $ npm install axios ``` Using bower: ```bash $ bower install axios ``` Using yarn: ```bash $ yarn add axios ``` Using jsDelivr CDN: ```html <script src="https://cdn.jsdelivr.net/npm/axios/dist/axios.min.js"></script> ``` Using unpkg CDN: ```html <script src="https://unpkg.com/axios/dist/axios.min.js"></script> ``` ## Example ### note: CommonJS usage In order to gain the TypeScript typings (for intellisense / autocomplete) while using CommonJS imports with `require()` use the following approach: ```js const axios = require('axios').default; // axios.<method> will now provide autocomplete and parameter typings ``` Performing a `GET` request ```js const axios = require('axios').default; // Make a request for a user with a given ID axios.get('/user?ID=12345') .then(function (response) { // handle success console.log(response); }) .catch(function (error) { // handle error console.log(error); }) .then(function () { // always executed }); // Optionally the request above could also be done as axios.get('/user', { params: { ID: 12345 } }) .then(function (response) { console.log(response); }) .catch(function (error) { console.log(error); }) .then(function () { // always executed }); // Want to use async/await? Add the `async` keyword to your outer function/method. async function getUser() { try { const response = await axios.get('/user?ID=12345'); console.log(response); } catch (error) { console.error(error); } } ``` > **NOTE:** `async/await` is part of ECMAScript 2017 and is not supported in Internet > Explorer and older browsers, so use with caution. Performing a `POST` request ```js axios.post('/user', { firstName: 'Fred', lastName: 'Flintstone' }) .then(function (response) { console.log(response); }) .catch(function (error) { console.log(error); }); ``` Performing multiple concurrent requests ```js function getUserAccount() { return axios.get('/user/12345'); } function getUserPermissions() { return axios.get('/user/12345/permissions'); } Promise.all([getUserAccount(), getUserPermissions()]) .then(function (results) { const acct = results[0]; const perm = results[1]; }); ``` ## axios API Requests can be made by passing the relevant config to `axios`. ##### axios(config) ```js // Send a POST request axios({ method: 'post', url: '/user/12345', data: { firstName: 'Fred', lastName: 'Flintstone' } }); ``` ```js // GET request for remote image in node.js axios({ method: 'get', url: 'http://bit.ly/2mTM3nY', responseType: 'stream' }) .then(function (response) { response.data.pipe(fs.createWriteStream('ada_lovelace.jpg')) }); ``` ##### axios(url[, config]) ```js // Send a GET request (default method) axios('/user/12345'); ``` ### Request method aliases For convenience, aliases have been provided for all common request methods. ##### axios.request(config) ##### axios.get(url[, config]) ##### axios.delete(url[, config]) ##### axios.head(url[, config]) ##### axios.options(url[, config]) ##### axios.post(url[, data[, config]]) ##### axios.put(url[, data[, config]]) ##### axios.patch(url[, data[, config]]) ###### NOTE When using the alias methods `url`, `method`, and `data` properties don't need to be specified in config. ### Concurrency (Deprecated) Please use `Promise.all` to replace the below functions. Helper functions for dealing with concurrent requests. axios.all(iterable) axios.spread(callback) ### Creating an instance You can create a new instance of axios with a custom config. ##### axios.create([config]) ```js const instance = axios.create({ baseURL: 'https://some-domain.com/api/', timeout: 1000, headers: {'X-Custom-Header': 'foobar'} }); ``` ### Instance methods The available instance methods are listed below. The specified config will be merged with the instance config. ##### axios#request(config) ##### axios#get(url[, config]) ##### axios#delete(url[, config]) ##### axios#head(url[, config]) ##### axios#options(url[, config]) ##### axios#post(url[, data[, config]]) ##### axios#put(url[, data[, config]]) ##### axios#patch(url[, data[, config]]) ##### axios#getUri([config]) ## Request Config These are the available config options for making requests. Only the `url` is required. Requests will default to `GET` if `method` is not specified. ```js { // `url` is the server URL that will be used for the request url: '/user', // `method` is the request method to be used when making the request method: 'get', // default // `baseURL` will be prepended to `url` unless `url` is absolute. // It can be convenient to set `baseURL` for an instance of axios to pass relative URLs // to methods of that instance. baseURL: 'https://some-domain.com/api/', // `transformRequest` allows changes to the request data before it is sent to the server // This is only applicable for request methods 'PUT', 'POST', 'PATCH' and 'DELETE' // The last function in the array must return a string or an instance of Buffer, ArrayBuffer, // FormData or Stream // You may modify the headers object. transformRequest: [function (data, headers) { // Do whatever you want to transform the data return data; }], // `transformResponse` allows changes to the response data to be made before // it is passed to then/catch transformResponse: [function (data) { // Do whatever you want to transform the data return data; }], // `headers` are custom headers to be sent headers: {'X-Requested-With': 'XMLHttpRequest'}, // `params` are the URL parameters to be sent with the request // Must be a plain object or a URLSearchParams object params: { ID: 12345 }, // `paramsSerializer` is an optional function in charge of serializing `params` // (e.g. https://www.npmjs.com/package/qs, http://api.jquery.com/jquery.param/) paramsSerializer: function (params) { return Qs.stringify(params, {arrayFormat: 'brackets'}) }, // `data` is the data to be sent as the request body // Only applicable for request methods 'PUT', 'POST', 'DELETE , and 'PATCH' // When no `transformRequest` is set, must be of one of the following types: // - string, plain object, ArrayBuffer, ArrayBufferView, URLSearchParams // - Browser only: FormData, File, Blob // - Node only: Stream, Buffer data: { firstName: 'Fred' }, // syntax alternative to send data into the body // method post // only the value is sent, not the key data: 'Country=Brasil&City=Belo Horizonte', // `timeout` specifies the number of milliseconds before the request times out. // If the request takes longer than `timeout`, the request will be aborted. timeout: 1000, // default is `0` (no timeout) // `withCredentials` indicates whether or not cross-site Access-Control requests // should be made using credentials withCredentials: false, // default // `adapter` allows custom handling of requests which makes testing easier. // Return a promise and supply a valid response (see lib/adapters/README.md). adapter: function (config) { /* ... */ }, // `auth` indicates that HTTP Basic auth should be used, and supplies credentials. // This will set an `Authorization` header, overwriting any existing // `Authorization` custom headers you have set using `headers`. // Please note that only HTTP Basic auth is configurable through this parameter. // For Bearer tokens and such, use `Authorization` custom headers instead. auth: { username: 'janedoe', password: 's00pers3cret' }, // `responseType` indicates the type of data that the server will respond with // options are: 'arraybuffer', 'document', 'json', 'text', 'stream' // browser only: 'blob' responseType: 'json', // default // `responseEncoding` indicates encoding to use for decoding responses (Node.js only) // Note: Ignored for `responseType` of 'stream' or client-side requests responseEncoding: 'utf8', // default // `xsrfCookieName` is the name of the cookie to use as a value for xsrf token xsrfCookieName: 'XSRF-TOKEN', // default // `xsrfHeaderName` is the name of the http header that carries the xsrf token value xsrfHeaderName: 'X-XSRF-TOKEN', // default // `onUploadProgress` allows handling of progress events for uploads // browser only onUploadProgress: function (progressEvent) { // Do whatever you want with the native progress event }, // `onDownloadProgress` allows handling of progress events for downloads // browser only onDownloadProgress: function (progressEvent) { // Do whatever you want with the native progress event }, // `maxContentLength` defines the max size of the http response content in bytes allowed in node.js maxContentLength: 2000, // `maxBodyLength` (Node only option) defines the max size of the http request content in bytes allowed maxBodyLength: 2000, // `validateStatus` defines whether to resolve or reject the promise for a given // HTTP response status code. If `validateStatus` returns `true` (or is set to `null` // or `undefined`), the promise will be resolved; otherwise, the promise will be // rejected. validateStatus: function (status) { return status >= 200 && status < 300; // default }, // `maxRedirects` defines the maximum number of redirects to follow in node.js. // If set to 0, no redirects will be followed. maxRedirects: 21, // default // `beforeRedirect` defines a function that will be called before redirect. // Use this to adjust the request options upon redirecting, // to inspect the latest response headers, // or to cancel the request by throwing an error // If maxRedirects is set to 0, `beforeRedirect` is not used. beforeRedirect: (options, { headers }) => { if (options.hostname === "example.com") { options.auth = "user:password"; } }; // `socketPath` defines a UNIX Socket to be used in node.js. // e.g. '/var/run/docker.sock' to send requests to the docker daemon. // Only either `socketPath` or `proxy` can be specified. // If both are specified, `socketPath` is used. socketPath: null, // default // `httpAgent` and `httpsAgent` define a custom agent to be used when performing http // and https requests, respectively, in node.js. This allows options to be added like // `keepAlive` that are not enabled by default. httpAgent: new http.Agent({ keepAlive: true }), httpsAgent: new https.Agent({ keepAlive: true }), // `proxy` defines the hostname, port, and protocol of the proxy server. // You can also define your proxy using the conventional `http_proxy` and // `https_proxy` environment variables. If you are using environment variables // for your proxy configuration, you can also define a `no_proxy` environment // variable as a comma-separated list of domains that should not be proxied. // Use `false` to disable proxies, ignoring environment variables. // `auth` indicates that HTTP Basic auth should be used to connect to the proxy, and // supplies credentials. // This will set an `Proxy-Authorization` header, overwriting any existing // `Proxy-Authorization` custom headers you have set using `headers`. // If the proxy server uses HTTPS, then you must set the protocol to `https`. proxy: { protocol: 'https', host: '127.0.0.1', port: 9000, auth: { username: 'mikeymike', password: 'rapunz3l' } }, // `cancelToken` specifies a cancel token that can be used to cancel the request // (see Cancellation section below for details) cancelToken: new CancelToken(function (cancel) { }), // an alternative way to cancel Axios requests using AbortController signal: new AbortController().signal, // `decompress` indicates whether or not the response body should be decompressed // automatically. If set to `true` will also remove the 'content-encoding' header // from the responses objects of all decompressed responses // - Node only (XHR cannot turn off decompression) decompress: true // default // `insecureHTTPParser` boolean. // Indicates where to use an insecure HTTP parser that accepts invalid HTTP headers. // This may allow interoperability with non-conformant HTTP implementations. // Using the insecure parser should be avoided. // see options https://nodejs.org/dist/latest-v12.x/docs/api/http.html#http_http_request_url_options_callback // see also https://nodejs.org/en/blog/vulnerability/february-2020-security-releases/#strict-http-header-parsing-none insecureHTTPParser: undefined // default // transitional options for backward compatibility that may be removed in the newer versions transitional: { // silent JSON parsing mode // `true` - ignore JSON parsing errors and set response.data to null if parsing failed (old behaviour) // `false` - throw SyntaxError if JSON parsing failed (Note: responseType must be set to 'json') silentJSONParsing: true, // default value for the current Axios version // try to parse the response string as JSON even if `responseType` is not 'json' forcedJSONParsing: true, // throw ETIMEDOUT error instead of generic ECONNABORTED on request timeouts clarifyTimeoutError: false, }, env: { // The FormData class to be used to automatically serialize the payload into a FormData object FormData: window?.FormData || global?.FormData } } ``` ## Response Schema The response for a request contains the following information. ```js { // `data` is the response that was provided by the server data: {}, // `status` is the HTTP status code from the server response status: 200, // `statusText` is the HTTP status message from the server response statusText: 'OK', // `headers` the HTTP headers that the server responded with // All header names are lower cased and can be accessed using the bracket notation. // Example: `response.headers['content-type']` headers: {}, // `config` is the config that was provided to `axios` for the request config: {}, // `request` is the request that generated this response // It is the last ClientRequest instance in node.js (in redirects) // and an XMLHttpRequest instance in the browser request: {} } ``` When using `then`, you will receive the response as follows: ```js axios.get('/user/12345') .then(function (response) { console.log(response.data); console.log(response.status); console.log(response.statusText); console.log(response.headers); console.log(response.config); }); ``` When using `catch`, or passing a [rejection callback](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/then) as second parameter of `then`, the response will be available through the `error` object as explained in the [Handling Errors](#handling-errors) section. ## Config Defaults You can specify config defaults that will be applied to every request. ### Global axios defaults ```js axios.defaults.baseURL = 'https://api.example.com'; // Important: If axios is used with multiple domains, the AUTH_TOKEN will be sent to all of them. // See below for an example using Custom instance defaults instead. axios.defaults.headers.common['Authorization'] = AUTH_TOKEN; axios.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded'; ``` ### Custom instance defaults ```js // Set config defaults when creating the instance const instance = axios.create({ baseURL: 'https://api.example.com' }); // Alter defaults after instance has been created instance.defaults.headers.common['Authorization'] = AUTH_TOKEN; ``` ### Config order of precedence Config will be merged with an order of precedence. The order is library defaults found in [lib/defaults.js](https://github.com/axios/axios/blob/master/lib/defaults.js#L28), then `defaults` property of the instance, and finally `config` argument for the request. The latter will take precedence over the former. Here's an example. ```js // Create an instance using the config defaults provided by the library // At this point the timeout config value is `0` as is the default for the library const instance = axios.create(); // Override timeout default for the library // Now all requests using this instance will wait 2.5 seconds before timing out instance.defaults.timeout = 2500; // Override timeout for this request as it's known to take a long time instance.get('/longRequest', { timeout: 5000 }); ``` ## Interceptors You can intercept requests or responses before they are handled by `then` or `catch`. ```js // Add a request interceptor axios.interceptors.request.use(function (config) { // Do something before request is sent return config; }, function (error) { // Do something with request error return Promise.reject(error); }); // Add a response interceptor axios.interceptors.response.use(function (response) { // Any status code that lie within the range of 2xx cause this function to trigger // Do something with response data return response; }, function (error) { // Any status codes that falls outside the range of 2xx cause this function to trigger // Do something with response error return Promise.reject(error); }); ``` If you need to remove an interceptor later you can. ```js const myInterceptor = axios.interceptors.request.use(function () {/*...*/}); axios.interceptors.request.eject(myInterceptor); ``` You can add interceptors to a custom instance of axios. ```js const instance = axios.create(); instance.interceptors.request.use(function () {/*...*/}); ``` When you add request interceptors, they are presumed to be asynchronous by default. This can cause a delay in the execution of your axios request when the main thread is blocked (a promise is created under the hood for the interceptor and your request gets put on the bottom of the call stack). If your request interceptors are synchronous you can add a flag to the options object that will tell axios to run the code synchronously and avoid any delays in request execution. ```js axios.interceptors.request.use(function (config) { config.headers.test = 'I am only a header!'; return config; }, null, { synchronous: true }); ``` If you want to execute a particular interceptor based on a runtime check, you can add a `runWhen` function to the options object. The interceptor will not be executed **if and only if** the return of `runWhen` is `false`. The function will be called with the config object (don't forget that you can bind your own arguments to it as well.) This can be handy when you have an asynchronous request interceptor that only needs to run at certain times. ```js function onGetCall(config) { return config.method === 'get'; } axios.interceptors.request.use(function (config) { config.headers.test = 'special get headers'; return config; }, null, { runWhen: onGetCall }); ``` ### Multiple Interceptors Given you add multiple response interceptors and when the response was fulfilled - then each interceptor is executed - then they are executed in the order they were added - then only the last interceptor's result is returned - then every interceptor receives the result of it's predecessor - and when the fulfillment-interceptor throws - then the following fulfillment-interceptor is not called - then the following rejection-interceptor is called - once caught, another following fulfill-interceptor is called again (just like in a promise chain). Read [the interceptor tests](./test/specs/interceptors.spec.js) for seeing all this in code. ## Handling Errors ```js axios.get('/user/12345') .catch(function (error) { if (error.response) { // The request was made and the server responded with a status code // that falls out of the range of 2xx console.log(error.response.data); console.log(error.response.status); console.log(error.response.headers); } else if (error.request) { // The request was made but no response was received // `error.request` is an instance of XMLHttpRequest in the browser and an instance of // http.ClientRequest in node.js console.log(error.request); } else { // Something happened in setting up the request that triggered an Error console.log('Error', error.message); } console.log(error.config); }); ``` Using the `validateStatus` config option, you can define HTTP code(s) that should throw an error. ```js axios.get('/user/12345', { validateStatus: function (status) { return status < 500; // Resolve only if the status code is less than 500 } }) ``` Using `toJSON` you get an object with more information about the HTTP error. ```js axios.get('/user/12345') .catch(function (error) { console.log(error.toJSON()); }); ``` ## Cancellation ### AbortController Starting from `v0.22.0` Axios supports AbortController to cancel requests in fetch API way: ```js const controller = new AbortController(); axios.get('/foo/bar', { signal: controller.signal }).then(function(response) { //... }); // cancel the request controller.abort() ``` ### CancelToken `👎deprecated` You can also cancel a request using a *CancelToken*. > The axios cancel token API is based on the withdrawn [cancelable promises proposal](https://github.com/tc39/proposal-cancelable-promises). > This API is deprecated since v0.22.0 and shouldn't be used in new projects You can create a cancel token using the `CancelToken.source` factory as shown below: ```js const CancelToken = axios.CancelToken; const source = CancelToken.source(); axios.get('/user/12345', { cancelToken: source.token }).catch(function (thrown) { if (axios.isCancel(thrown)) { console.log('Request canceled', thrown.message); } else { // handle error } }); axios.post('/user/12345', { name: 'new name' }, { cancelToken: source.token }) // cancel the request (the message parameter is optional) source.cancel('Operation canceled by the user.'); ``` You can also create a cancel token by passing an executor function to the `CancelToken` constructor: ```js const CancelToken = axios.CancelToken; let cancel; axios.get('/user/12345', { cancelToken: new CancelToken(function executor(c) { // An executor function receives a cancel function as a parameter cancel = c; }) }); // cancel the request cancel(); ``` > Note: you can cancel several requests with the same cancel token/abort controller. > If a cancellation token is already cancelled at the moment of starting an Axios request, then the request is cancelled immediately, without any attempts to make real request. > During the transition period, you can use both cancellation APIs, even for the same request: ## Using application/x-www-form-urlencoded format By default, axios serializes JavaScript objects to `JSON`. To send data in the `application/x-www-form-urlencoded` format instead, you can use one of the following options. ### Browser In a browser, you can use the [`URLSearchParams`](https://developer.mozilla.org/en-US/docs/Web/API/URLSearchParams) API as follows: ```js const params = new URLSearchParams(); params.append('param1', 'value1'); params.append('param2', 'value2'); axios.post('/foo', params); ``` > Note that `URLSearchParams` is not supported by all browsers (see [caniuse.com](http://www.caniuse.com/#feat=urlsearchparams)), but there is a [polyfill](https://github.com/WebReflection/url-search-params) available (make sure to polyfill the global environment). Alternatively, you can encode data using the [`qs`](https://github.com/ljharb/qs) library: ```js const qs = require('qs'); axios.post('/foo', qs.stringify({ 'bar': 123 })); ``` Or in another way (ES6), ```js import qs from 'qs'; const data = { 'bar': 123 }; const options = { method: 'POST', headers: { 'content-type': 'application/x-www-form-urlencoded' }, data: qs.stringify(data), url, }; axios(options); ``` ### Node.js #### Query string In node.js, you can use the [`querystring`](https://nodejs.org/api/querystring.html) module as follows: ```js const querystring = require('querystring'); axios.post('http://something.com/', querystring.stringify({ foo: 'bar' })); ``` or ['URLSearchParams'](https://nodejs.org/api/url.html#url_class_urlsearchparams) from ['url module'](https://nodejs.org/api/url.html) as follows: ```js const url = require('url'); const params = new url.URLSearchParams({ foo: 'bar' }); axios.post('http://something.com/', params.toString()); ``` You can also use the [`qs`](https://github.com/ljharb/qs) library. > NOTE: > The `qs` library is preferable if you need to stringify nested objects, as the `querystring` method has [known issues](https://github.com/nodejs/node-v0.x-archive/issues/1665) with that use case. #### Form data ##### 🆕 Automatic serialization Starting from `v0.27.0`, Axios supports automatic object serialization to a FormData object if the request `Content-Type` header is set to `multipart/form-data`. The following request will submit the data in a FormData format (Browser & Node.js): ```js import axios from 'axios'; axios.post('https://httpbin.org/post', {x: 1}, { headers: { 'Content-Type': 'multipart/form-data' } }).then(({data})=> console.log(data)); ``` In the `node.js` build, the ([`form-data`](https://github.com/form-data/form-data)) polyfill is used by default. You can overload the FormData class by setting the `env.FormData` config variable, but you probably won't need it in most cases: ```js const axios= require('axios'); var FormData = require('form-data'); axios.post('https://httpbin.org/post', {x: 1, buf: new Buffer(10)}, { headers: { 'Content-Type': 'multipart/form-data' } }).then(({data})=> console.log(data)); ``` Axios FormData serializer supports some special endings to perform the following operations: - `{}` - serialize the value with JSON.stringify - `[]` - unwrap the array like object as separate fields with the same key ```js const axios= require('axios'); axios.post('https://httpbin.org/post', { 'myObj{}': {x: 1, s: "foo"}, 'files[]': document.querySelector('#fileInput').files }, { headers: { 'Content-Type': 'multipart/form-data' } }).then(({data})=> console.log(data)); ``` Axios supports the following shortcut methods: `postForm`, `putForm`, `patchForm` which are just the corresponding http methods with a header preset: `Content-Type`: `multipart/form-data`. FileList object can be passed directly: ```js await axios.postForm('https://httpbin.org/post', document.querySelector('#fileInput').files) ``` All files will be sent with the same field names: `files[]`; ##### Manual FormData passing In node.js, you can use the [`form-data`](https://github.com/form-data/form-data) library as follows: ```js const FormData = require('form-data'); const form = new FormData(); form.append('my_field', 'my value'); form.append('my_buffer', new Buffer(10)); form.append('my_file', fs.createReadStream('/foo/bar.jpg')); axios.post('https://example.com', form) ``` ## Semver Until axios reaches a `1.0` release, breaking changes will be released with a new minor version. For example `0.5.1`, and `0.5.4` will have the same API, but `0.6.0` will have breaking changes. ## Promises axios depends on a native ES6 Promise implementation to be [supported](http://caniuse.com/promises). If your environment doesn't support ES6 Promises, you can [polyfill](https://github.com/jakearchibald/es6-promise). ## TypeScript axios includes [TypeScript](http://typescriptlang.org) definitions and a type guard for axios errors. ```typescript let user: User = null; try { const { data } = await axios.get('/user?ID=12345'); user = data.userDetails; } catch (error) { if (axios.isAxiosError(error)) { handleAxiosError(error); } else { handleUnexpectedError(error); } } ``` ## Online one-click setup You can use Gitpod an online IDE(which is free for Open Source) for contributing or running the examples online. [](https://gitpod.io/#https://github.com/axios/axios/blob/master/examples/server.js) ## Resources * [Changelog](https://github.com/axios/axios/blob/master/CHANGELOG.md) * [Upgrade Guide](https://github.com/axios/axios/blob/master/UPGRADE_GUIDE.md) * [Ecosystem](https://github.com/axios/axios/blob/master/ECOSYSTEM.md) * [Contributing Guide](https://github.com/axios/axios/blob/master/CONTRIBUTING.md) * [Code of Conduct](https://github.com/axios/axios/blob/master/CODE_OF_CONDUCT.md) ## Credits axios is heavily inspired by the [$http service](https://docs.angularjs.org/api/ng/service/$http) provided in [AngularJS](https://angularjs.org/). Ultimately axios is an effort to provide a standalone `$http`-like service for use outside of AngularJS. ## License [MIT](LICENSE) # npmlog The logger util that npm uses. This logger is very basic. It does the logging for npm. It supports custom levels and colored output. By default, logs are written to stderr. If you want to send log messages to outputs other than streams, then you can change the `log.stream` member, or you can just listen to the events that it emits, and do whatever you want with them. # Installation ```console npm install npmlog --save ``` # Basic Usage ```javascript var log = require('npmlog') // additional stuff ---------------------------+ // message ----------+ | // prefix ----+ | | // level -+ | | | // v v v v log.info('fyi', 'I have a kitty cat: %j', myKittyCat) ``` ## log.level * {String} The level to display logs at. Any logs at or above this level will be displayed. The special level `silent` will prevent anything from being displayed ever. ## log.record * {Array} An array of all the log messages that have been entered. ## log.maxRecordSize * {Number} The maximum number of records to keep. If log.record gets bigger than 10% over this value, then it is sliced down to 90% of this value. The reason for the 10% window is so that it doesn't have to resize a large array on every log entry. ## log.prefixStyle * {Object} A style object that specifies how prefixes are styled. (See below) ## log.headingStyle * {Object} A style object that specifies how the heading is styled. (See below) ## log.heading * {String} Default: "" If set, a heading that is printed at the start of every line. ## log.stream * {Stream} Default: `process.stderr` The stream where output is written. ## log.enableColor() Force colors to be used on all messages, regardless of the output stream. ## log.disableColor() Disable colors on all messages. ## log.enableProgress() Enable the display of log activity spinner and progress bar ## log.disableProgress() Disable the display of a progress bar ## log.enableUnicode() Force the unicode theme to be used for the progress bar. ## log.disableUnicode() Disable the use of unicode in the progress bar. ## log.setGaugeTemplate(template) Set a template for outputting the progress bar. See the [gauge documentation] for details. [gauge documentation]: https://npmjs.com/package/gauge ## log.setGaugeThemeset(themes) Select a themeset to pick themes from for the progress bar. See the [gauge documentation] for details. ## log.pause() Stop emitting messages to the stream, but do not drop them. ## log.resume() Emit all buffered messages that were written while paused. ## log.log(level, prefix, message, ...) * `level` {String} The level to emit the message at * `prefix` {String} A string prefix. Set to "" to skip. * `message...` Arguments to `util.format` Emit a log message at the specified level. ## log\[level](prefix, message, ...) For example, * log.silly(prefix, message, ...) * log.verbose(prefix, message, ...) * log.info(prefix, message, ...) * log.http(prefix, message, ...) * log.warn(prefix, message, ...) * log.error(prefix, message, ...) Like `log.log(level, prefix, message, ...)`. In this way, each level is given a shorthand, so you can do `log.info(prefix, message)`. ## log.addLevel(level, n, style, disp) * `level` {String} Level indicator * `n` {Number} The numeric level * `style` {Object} Object with fg, bg, inverse, etc. * `disp` {String} Optional replacement for `level` in the output. Sets up a new level with a shorthand function and so forth. Note that if the number is `Infinity`, then setting the level to that will cause all log messages to be suppressed. If the number is `-Infinity`, then the only way to show it is to enable all log messages. ## log.newItem(name, todo, weight) * `name` {String} Optional; progress item name. * `todo` {Number} Optional; total amount of work to be done. Default 0. * `weight` {Number} Optional; the weight of this item relative to others. Default 1. This adds a new `are-we-there-yet` item tracker to the progress tracker. The object returned has the `log[level]` methods but is otherwise an `are-we-there-yet` `Tracker` object. ## log.newStream(name, todo, weight) This adds a new `are-we-there-yet` stream tracker to the progress tracker. The object returned has the `log[level]` methods but is otherwise an `are-we-there-yet` `TrackerStream` object. ## log.newGroup(name, weight) This adds a new `are-we-there-yet` tracker group to the progress tracker. The object returned has the `log[level]` methods but is otherwise an `are-we-there-yet` `TrackerGroup` object. # Events Events are all emitted with the message object. * `log` Emitted for all messages * `log.<level>` Emitted for all messages with the `<level>` level. * `<prefix>` Messages with prefixes also emit their prefix as an event. # Style Objects Style objects can have the following fields: * `fg` {String} Color for the foreground text * `bg` {String} Color for the background * `bold`, `inverse`, `underline` {Boolean} Set the associated property * `bell` {Boolean} Make a noise (This is pretty annoying, probably.) # Message Objects Every log event is emitted with a message object, and the `log.record` list contains all of them that have been created. They have the following fields: * `id` {Number} * `level` {String} * `prefix` {String} * `message` {String} Result of `util.format()` * `messageRaw` {Array} Arguments to `util.format()` # Blocking TTYs We use [`set-blocking`](https://npmjs.com/package/set-blocking) to set stderr and stdout blocking if they are tty's and have the setBlocking call. This is a work around for an issue in early versions of Node.js 6.x, which made stderr and stdout non-blocking on OSX. (They are always blocking Windows and were never blocking on Linux.) `npmlog` needs them to be blocking so that it can allow output to stdout and stderr to be interlaced. # ci-info Get details about the current Continuous Integration environment. Please [open an issue](https://github.com/watson/ci-info/issues/new?template=ci-server-not-detected.md) if your CI server isn't properly detected :) [](https://www.npmjs.com/package/ci-info) [](https://travis-ci.org/watson/ci-info) [](https://github.com/feross/standard) ## Installation ```bash npm install ci-info --save ``` ## Usage ```js var ci = require('ci-info') if (ci.isCI) { console.log('The name of the CI server is:', ci.name) } else { console.log('This program is not running on a CI server') } ``` ## Supported CI tools Officially supported CI servers: | Name | Constant | isPR | |------|----------|------| | [AWS CodeBuild](https://aws.amazon.com/codebuild/) | `ci.CODEBUILD` | 🚫 | | [AppVeyor](http://www.appveyor.com) | `ci.APPVEYOR` | ✅ | | [Azure Pipelines](https://azure.microsoft.com/en-us/services/devops/pipelines/) | `ci.AZURE_PIPELINES` | ✅ | | [Bamboo](https://www.atlassian.com/software/bamboo) by Atlassian | `ci.BAMBOO` | 🚫 | | [Bitbucket Pipelines](https://bitbucket.org/product/features/pipelines) | `ci.BITBUCKET` | ✅ | | [Bitrise](https://www.bitrise.io/) | `ci.BITRISE` | ✅ | | [Buddy](https://buddy.works/) | `ci.BUDDY` | ✅ | | [Buildkite](https://buildkite.com) | `ci.BUILDKITE` | ✅ | | [CircleCI](http://circleci.com) | `ci.CIRCLE` | ✅ | | [Cirrus CI](https://cirrus-ci.org) | `ci.CIRRUS` | ✅ | | [Codeship](https://codeship.com) | `ci.CODESHIP` | 🚫 | | [Drone](https://drone.io) | `ci.DRONE` | ✅ | | [dsari](https://github.com/rfinnie/dsari) | `ci.DSARI` | 🚫 | | [GitLab CI](https://about.gitlab.com/gitlab-ci/) | `ci.GITLAB` | 🚫 | | [GoCD](https://www.go.cd/) | `ci.GOCD` | 🚫 | | [Hudson](http://hudson-ci.org) | `ci.HUDSON` | 🚫 | | [Jenkins CI](https://jenkins-ci.org) | `ci.JENKINS` | ✅ | | [Magnum CI](https://magnum-ci.com) | `ci.MAGNUM` | 🚫 | | [Netlify CI](https://www.netlify.com/) | `ci.NETLIFY` | ✅ | | [Sail CI](https://sail.ci/) | `ci.SAIL` | ✅ | | [Semaphore](https://semaphoreci.com) | `ci.SEMAPHORE` | ✅ | | [Shippable](https://www.shippable.com/) | `ci.SHIPPABLE` | ✅ | | [Solano CI](https://www.solanolabs.com/) | `ci.SOLANO` | ✅ | | [Strider CD](https://strider-cd.github.io/) | `ci.STRIDER` | 🚫 | | [TaskCluster](http://docs.taskcluster.net) | `ci.TASKCLUSTER` | 🚫 | | [TeamCity](https://www.jetbrains.com/teamcity/) by JetBrains | `ci.TEAMCITY` | 🚫 | | [Travis CI](http://travis-ci.org) | `ci.TRAVIS` | ✅ | ## API ### `ci.name` Returns a string containing name of the CI server the code is running on. If CI server is not detected, it returns `null`. Don't depend on the value of this string not to change for a specific vendor. If you find your self writing `ci.name === 'Travis CI'`, you most likely want to use `ci.TRAVIS` instead. ### `ci.isCI` Returns a boolean. Will be `true` if the code is running on a CI server, otherwise `false`. Some CI servers not listed here might still trigger the `ci.isCI` boolean to be set to `true` if they use certain vendor neutral environment variables. In those cases `ci.name` will be `null` and no vendor specific boolean will be set to `true`. ### `ci.isPR` Returns a boolean if PR detection is supported for the current CI server. Will be `true` if a PR is being tested, otherwise `false`. If PR detection is not supported for the current CI server, the value will be `null`. ### `ci.<VENDOR-CONSTANT>` A vendor specific boolean constant is exposed for each support CI vendor. A constant will be `true` if the code is determined to run on the given CI server, otherwise `false`. Examples of vendor constants are `ci.TRAVIS` or `ci.APPVEYOR`. For a complete list, see the support table above. Deprecated vendor constants that will be removed in the next major release: - `ci.TDDIUM` (Solano CI) This have been renamed `ci.SOLANO` ## License [MIT](LICENSE) # capability.js - javascript environment capability detection [](https://travis-ci.org/inf3rno/capability) The capability.js library provides capability detection for different javascript environments. ## Documentation This project is empty yet. ### Installation ```bash npm install capability ``` ```bash bower install capability ``` #### Environment compatibility The lib requires only basic javascript features, so it will run in every js environments. #### Requirements If you want to use the lib in browser, you'll need a node module loader, e.g. browserify, webpack, etc... #### Usage In this documentation I used the lib as follows: ```js var capability = require("capability"); ``` ### Capabilities API #### Defining a capability You can define a capability by using the `define(name, test)` function. ```js capability.define("Object.create", function () { return Object.create; }); ``` The `name` parameter should contain the identifier of the capability and the `test` parameter should contain a function, which can detect the capability. If the capability is supported by the environment, then the `test()` should return `true`, otherwise it should return `false`. You don't have to convert the return value into a `Boolean`, the library will do that for you, so you won't have memory leaks because of this. #### Testing a capability The `test(name)` function will return a `Boolean` about whether the capability is supported by the actual environment. ```js console.log(capability.test("Object.create")); // true - in recent environments // false - by pre ES5 environments without Object.create ``` You can use `capability(name)` instead of `capability.test(name)` if you want a short code by optional requirements. #### Checking a capability The `check(name)` function will throw an Error when the capability is not supported by the actual environment. ```js capability.check("Object.create"); // this will throw an Error by pre ES5 environments without Object.create ``` #### Checking capability with require and modules It is possible to check the environments with `require()` by adding a module, which calls the `check(name)` function. By the capability definitions in this lib I added such modules by each definition, so you can do for example `require("capability/es5")`. Ofc. you can do fun stuff if you want, e.g. you can call multiple `check`s from a single `requirements.js` file in your lib, etc... ### Definitions Currently the following definitions are supported by the lib: - strict mode - `arguments.callee.caller` - es5 - `Array.prototype.forEach` - `Array.prototype.map` - `Function.prototype.bind` - `Object.create` - `Object.defineProperties` - `Object.defineProperty` - `Object.prototype.hasOwnProperty` - `Error.captureStackTrace` - `Error.prototype.stack` ## License MIT - 2016 Jánszky László Lajos # color-convert [](https://travis-ci.org/Qix-/color-convert) Color-convert is a color conversion library for JavaScript and node. It converts all ways between `rgb`, `hsl`, `hsv`, `hwb`, `cmyk`, `ansi`, `ansi16`, `hex` strings, and CSS `keyword`s (will round to closest): ```js var convert = require('color-convert'); convert.rgb.hsl(140, 200, 100); // [96, 48, 59] convert.keyword.rgb('blue'); // [0, 0, 255] var rgbChannels = convert.rgb.channels; // 3 var cmykChannels = convert.cmyk.channels; // 4 var ansiChannels = convert.ansi16.channels; // 1 ``` # Install ```console $ npm install color-convert ``` # API Simply get the property of the _from_ and _to_ conversion that you're looking for. All functions have a rounded and unrounded variant. By default, return values are rounded. To get the unrounded (raw) results, simply tack on `.raw` to the function. All 'from' functions have a hidden property called `.channels` that indicates the number of channels the function expects (not including alpha). ```js var convert = require('color-convert'); // Hex to LAB convert.hex.lab('DEADBF'); // [ 76, 21, -2 ] convert.hex.lab.raw('DEADBF'); // [ 75.56213190997677, 20.653827952644754, -2.290532499330533 ] // RGB to CMYK convert.rgb.cmyk(167, 255, 4); // [ 35, 0, 98, 0 ] convert.rgb.cmyk.raw(167, 255, 4); // [ 34.509803921568626, 0, 98.43137254901961, 0 ] ``` ### Arrays All functions that accept multiple arguments also support passing an array. Note that this does **not** apply to functions that convert from a color that only requires one value (e.g. `keyword`, `ansi256`, `hex`, etc.) ```js var convert = require('color-convert'); convert.rgb.hex(123, 45, 67); // '7B2D43' convert.rgb.hex([123, 45, 67]); // '7B2D43' ``` ## Routing Conversions that don't have an _explicitly_ defined conversion (in [conversions.js](conversions.js)), but can be converted by means of sub-conversions (e.g. XYZ -> **RGB** -> CMYK), are automatically routed together. This allows just about any color model supported by `color-convert` to be converted to any other model, so long as a sub-conversion path exists. This is also true for conversions requiring more than one step in between (e.g. LCH -> **LAB** -> **XYZ** -> **RGB** -> Hex). Keep in mind that extensive conversions _may_ result in a loss of precision, and exist only to be complete. For a list of "direct" (single-step) conversions, see [conversions.js](conversions.js). # Contribute If there is a new model you would like to support, or want to add a direct conversion between two existing models, please send us a pull request. # License Copyright &copy; 2011-2016, Heather Arthur and Josh Junon. Licensed under the [MIT License](LICENSE). # line-column [](https://travis-ci.org/io-monad/line-column) [](https://coveralls.io/github/io-monad/line-column?branch=master) [](https://badge.fury.io/js/line-column) Node module to convert efficiently index to/from line-column in a string. ## Install npm install line-column ## Usage ### lineColumn(str, options = {}) Returns a `LineColumnFinder` instance for given string `str`. #### Options | Key | Description | Default | | ------- | ----------- | ------- | | `origin` | The origin value of line number and column number | `1` | ### lineColumn(str, index) This is just a shorthand for `lineColumn(str).fromIndex(index)`. ### LineColumnFinder#fromIndex(index) Find line and column from index in the string. Parameters: - `index` - `number` Index in the string. (0-origin) Returns: - `{ line: x, col: y }` Found line number and column number. - `null` if the given index is out of range. ### LineColumnFinder#toIndex(line, column) Find index from line and column in the string. Parameters: - `line` - `number` Line number in the string. - `column` - `number` Column number in the string. or - `{ line: x, col: y }` - `Object` line and column numbers in the string.<br>A key name `column` can be used instead of `col`. or - `[ line, col ]` - `Array` line and column numbers in the string. Returns: - `number` Found index in the string. - `-1` if the given line or column is out of range. ## Example ```js var lineColumn = require("line-column"); var testString = [ "ABCDEFG\n", // line:0, index:0 "HIJKLMNOPQRSTU\n", // line:1, index:8 "VWXYZ\n", // line:2, index:23 "日本語の文字\n", // line:3, index:29 "English words" // line:4, index:36 ].join(""); // length:49 lineColumn(testString).fromIndex(3) // { line: 1, col: 4 } lineColumn(testString).fromIndex(33) // { line: 4, col: 5 } lineColumn(testString).toIndex(1, 4) // 3 lineColumn(testString).toIndex(4, 5) // 33 // Shorthand of .fromIndex (compatible with find-line-column) lineColumn(testString, 33) // { line:4, col: 5 } // Object or Array is also acceptable lineColumn(testString).toIndex({ line: 4, col: 5 }) // 33 lineColumn(testString).toIndex({ line: 4, column: 5 }) // 33 lineColumn(testString).toIndex([4, 5]) // 33 // You can cache it for the same string. It is so efficient. (See benchmark) var finder = lineColumn(testString); finder.fromIndex(33) // { line: 4, column: 5 } finder.toIndex(4, 5) // 33 // For 0-origin line and column numbers var oneOrigin = lineColumn(testString, { origin: 0 }); oneOrigin.fromIndex(33) // { line: 3, column: 4 } oneOrigin.toIndex(3, 4) // 33 ``` ## Testing npm test ## Benchmark The popular package [find-line-column](https://www.npmjs.com/package/find-line-column) provides the same "index to line-column" feature. Here is some benchmarking on `line-column` vs `find-line-column`. You can run this benchmark by `npm run benchmark`. See [benchmark/](benchmark/) for the source code. ``` long text + line-column (not cached) x 72,989 ops/sec ±0.83% (89 runs sampled) long text + line-column (cached) x 13,074,242 ops/sec ±0.32% (89 runs sampled) long text + find-line-column x 33,887 ops/sec ±0.54% (84 runs sampled) short text + line-column (not cached) x 1,636,766 ops/sec ±0.77% (82 runs sampled) short text + line-column (cached) x 21,699,686 ops/sec ±1.04% (82 runs sampled) short text + find-line-column x 382,145 ops/sec ±1.04% (85 runs sampled) ``` As you might have noticed, even not cached version of `line-column` is 2x - 4x faster than `find-line-column`, and cached version of `line-column` is remarkable 50x - 380x faster. ## Contributing 1. Fork it! 2. Create your feature branch: `git checkout -b my-new-feature` 3. Commit your changes: `git commit -am 'Add some feature'` 4. Push to the branch: `git push origin my-new-feature` 5. Submit a pull request :D ## License MIT (See LICENSE) # axios // env The `data.js` file is updated automatically when the package version is upgrading. Please do not edit it manually. # asynckit [](https://www.npmjs.com/package/asynckit) Minimal async jobs utility library, with streams support. [](https://travis-ci.org/alexindigo/asynckit) [](https://travis-ci.org/alexindigo/asynckit) [](https://ci.appveyor.com/project/alexindigo/asynckit) [](https://coveralls.io/github/alexindigo/asynckit?branch=master) [](https://david-dm.org/alexindigo/asynckit) [](https://www.bithound.io/github/alexindigo/asynckit) <!-- [](https://www.npmjs.com/package/reamde) --> AsyncKit provides harness for `parallel` and `serial` iterators over list of items represented by arrays or objects. Optionally it accepts abort function (should be synchronously return by iterator for each item), and terminates left over jobs upon an error event. For specific iteration order built-in (`ascending` and `descending`) and custom sort helpers also supported, via `asynckit.serialOrdered` method. It ensures async operations to keep behavior more stable and prevent `Maximum call stack size exceeded` errors, from sync iterators. | compression | size | | :----------------- | -------: | | asynckit.js | 12.34 kB | | asynckit.min.js | 4.11 kB | | asynckit.min.js.gz | 1.47 kB | ## Install ```sh $ npm install --save asynckit ``` ## Examples ### Parallel Jobs Runs iterator over provided array in parallel. Stores output in the `result` array, on the matching positions. In unlikely event of an error from one of the jobs, will terminate rest of the active jobs (if abort function is provided) and return error along with salvaged data to the main callback function. #### Input Array ```javascript var parallel = require('asynckit').parallel , assert = require('assert') ; var source = [ 1, 1, 4, 16, 64, 32, 8, 2 ] , expectedResult = [ 2, 2, 8, 32, 128, 64, 16, 4 ] , expectedTarget = [ 1, 1, 2, 4, 8, 16, 32, 64 ] , target = [] ; parallel(source, asyncJob, function(err, result) { assert.deepEqual(result, expectedResult); assert.deepEqual(target, expectedTarget); }); // async job accepts one element from the array // and a callback function function asyncJob(item, cb) { // different delays (in ms) per item var delay = item * 25; // pretend different jobs take different time to finish // and not in consequential order var timeoutId = setTimeout(function() { target.push(item); cb(null, item * 2); }, delay); // allow to cancel "leftover" jobs upon error // return function, invoking of which will abort this job return clearTimeout.bind(null, timeoutId); } ``` More examples could be found in [test/test-parallel-array.js](test/test-parallel-array.js). #### Input Object Also it supports named jobs, listed via object. ```javascript var parallel = require('asynckit/parallel') , assert = require('assert') ; var source = { first: 1, one: 1, four: 4, sixteen: 16, sixtyFour: 64, thirtyTwo: 32, eight: 8, two: 2 } , expectedResult = { first: 2, one: 2, four: 8, sixteen: 32, sixtyFour: 128, thirtyTwo: 64, eight: 16, two: 4 } , expectedTarget = [ 1, 1, 2, 4, 8, 16, 32, 64 ] , expectedKeys = [ 'first', 'one', 'two', 'four', 'eight', 'sixteen', 'thirtyTwo', 'sixtyFour' ] , target = [] , keys = [] ; parallel(source, asyncJob, function(err, result) { assert.deepEqual(result, expectedResult); assert.deepEqual(target, expectedTarget); assert.deepEqual(keys, expectedKeys); }); // supports full value, key, callback (shortcut) interface function asyncJob(item, key, cb) { // different delays (in ms) per item var delay = item * 25; // pretend different jobs take different time to finish // and not in consequential order var timeoutId = setTimeout(function() { keys.push(key); target.push(item); cb(null, item * 2); }, delay); // allow to cancel "leftover" jobs upon error // return function, invoking of which will abort this job return clearTimeout.bind(null, timeoutId); } ``` More examples could be found in [test/test-parallel-object.js](test/test-parallel-object.js). ### Serial Jobs Runs iterator over provided array sequentially. Stores output in the `result` array, on the matching positions. In unlikely event of an error from one of the jobs, will not proceed to the rest of the items in the list and return error along with salvaged data to the main callback function. #### Input Array ```javascript var serial = require('asynckit/serial') , assert = require('assert') ; var source = [ 1, 1, 4, 16, 64, 32, 8, 2 ] , expectedResult = [ 2, 2, 8, 32, 128, 64, 16, 4 ] , expectedTarget = [ 0, 1, 2, 3, 4, 5, 6, 7 ] , target = [] ; serial(source, asyncJob, function(err, result) { assert.deepEqual(result, expectedResult); assert.deepEqual(target, expectedTarget); }); // extended interface (item, key, callback) // also supported for arrays function asyncJob(item, key, cb) { target.push(key); // it will be automatically made async // even it iterator "returns" in the same event loop cb(null, item * 2); } ``` More examples could be found in [test/test-serial-array.js](test/test-serial-array.js). #### Input Object Also it supports named jobs, listed via object. ```javascript var serial = require('asynckit').serial , assert = require('assert') ; var source = [ 1, 1, 4, 16, 64, 32, 8, 2 ] , expectedResult = [ 2, 2, 8, 32, 128, 64, 16, 4 ] , expectedTarget = [ 0, 1, 2, 3, 4, 5, 6, 7 ] , target = [] ; var source = { first: 1, one: 1, four: 4, sixteen: 16, sixtyFour: 64, thirtyTwo: 32, eight: 8, two: 2 } , expectedResult = { first: 2, one: 2, four: 8, sixteen: 32, sixtyFour: 128, thirtyTwo: 64, eight: 16, two: 4 } , expectedTarget = [ 1, 1, 4, 16, 64, 32, 8, 2 ] , target = [] ; serial(source, asyncJob, function(err, result) { assert.deepEqual(result, expectedResult); assert.deepEqual(target, expectedTarget); }); // shortcut interface (item, callback) // works for object as well as for the arrays function asyncJob(item, cb) { target.push(item); // it will be automatically made async // even it iterator "returns" in the same event loop cb(null, item * 2); } ``` More examples could be found in [test/test-serial-object.js](test/test-serial-object.js). _Note: Since _object_ is an _unordered_ collection of properties, it may produce unexpected results with sequential iterations. Whenever order of the jobs' execution is important please use `serialOrdered` method._ ### Ordered Serial Iterations TBD For example [compare-property](compare-property) package. ### Streaming interface TBD ## Want to Know More? More examples can be found in [test folder](test/). Or open an [issue](https://github.com/alexindigo/asynckit/issues) with questions and/or suggestions. ## License AsyncKit is licensed under the MIT license. # isarray `Array#isArray` for older browsers. [](http://travis-ci.org/juliangruber/isarray) [](https://www.npmjs.org/package/isarray) [ ](https://ci.testling.com/juliangruber/isarray) ## Usage ```js var isArray = require('isarray'); console.log(isArray([])); // => true console.log(isArray({})); // => false ``` ## Installation With [npm](http://npmjs.org) do ```bash $ npm install isarray ``` Then bundle for the browser with [browserify](https://github.com/substack/browserify). With [component](http://component.io) do ```bash $ component install juliangruber/isarray ``` ## License (MIT) Copyright (c) 2013 Julian Gruber &lt;julian@juliangruber.com&gt; Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # js-sha256 [](https://travis-ci.org/emn178/js-sha256) [](https://coveralls.io/r/emn178/js-sha256?branch=master) [](https://cdnjs.com/libraries/js-sha256/) [](https://nodei.co/npm/js-sha256/) A simple SHA-256 / SHA-224 hash function for JavaScript supports UTF-8 encoding. ## Demo [SHA256 Online](http://emn178.github.io/online-tools/sha256.html) [SHA224 Online](http://emn178.github.io/online-tools/sha224.html) ## Download [Compress](https://raw.github.com/emn178/js-sha256/master/build/sha256.min.js) [Uncompress](https://raw.github.com/emn178/js-sha256/master/src/sha256.js) ## Installation You can also install js-sha256 by using Bower. bower install js-sha256 For node.js, you can use this command to install: npm install js-sha256 ## Usage You could use like this: ```JavaScript sha256('Message to hash'); sha224('Message to hash'); var hash = sha256.create(); hash.update('Message to hash'); hash.hex(); var hash2 = sha256.update('Message to hash'); hash2.update('Message2 to hash'); hash2.array(); // HMAC sha256.hmac('key', 'Message to hash'); sha224.hmac('key', 'Message to hash'); var hash = sha256.hmac.create('key'); hash.update('Message to hash'); hash.hex(); var hash2 = sha256.hmac.update('key', 'Message to hash'); hash2.update('Message2 to hash'); hash2.array(); ``` If you use node.js, you should require the module first: ```JavaScript var sha256 = require('js-sha256'); ``` or ```JavaScript var sha256 = require('js-sha256').sha256; var sha224 = require('js-sha256').sha224; ``` It supports AMD: ```JavaScript require(['your/path/sha256.js'], function(sha256) { // ... }); ``` or TypeScript ```TypeScript import { sha256, sha224 } from 'js-sha256'; ``` ## Example ```JavaScript sha256(''); // e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 sha256('The quick brown fox jumps over the lazy dog'); // d7a8fbb307d7809469ca9abcb0082e4f8d5651e46d3cdb762d02d0bf37c9e592 sha256('The quick brown fox jumps over the lazy dog.'); // ef537f25c895bfa782526529a9b63d97aa631564d5d789c2b765448c8635fb6c sha224(''); // d14a028c2a3a2bc9476102bb288234c415a2b01f828ea62ac5b3e42f sha224('The quick brown fox jumps over the lazy dog'); // 730e109bd7a8a32b1cb9d9a09aa2325d2430587ddbc0c38bad911525 sha224('The quick brown fox jumps over the lazy dog.'); // 619cba8e8e05826e9b8c519c0a5c68f4fb653e8a3d8aa04bb2c8cd4c // It also supports UTF-8 encoding sha256('中文'); // 72726d8818f693066ceb69afa364218b692e62ea92b385782363780f47529c21 sha224('中文'); // dfbab71afdf54388af4d55f8bd3de8c9b15e0eb916bf9125f4a959d4 // It also supports byte `Array`, `Uint8Array`, `ArrayBuffer` input sha256([]); // e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 sha256(new Uint8Array([211, 212])); // 182889f925ae4e5cc37118ded6ed87f7bdc7cab5ec5e78faef2e50048999473f // Different output sha256(''); // e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 sha256.hex(''); // e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 sha256.array(''); // [227, 176, 196, 66, 152, 252, 28, 20, 154, 251, 244, 200, 153, 111, 185, 36, 39, 174, 65, 228, 100, 155, 147, 76, 164, 149, 153, 27, 120, 82, 184, 85] sha256.digest(''); // [227, 176, 196, 66, 152, 252, 28, 20, 154, 251, 244, 200, 153, 111, 185, 36, 39, 174, 65, 228, 100, 155, 147, 76, 164, 149, 153, 27, 120, 82, 184, 85] sha256.arrayBuffer(''); // ArrayBuffer ``` ## License The project is released under the [MIT license](http://www.opensource.org/licenses/MIT). ## Contact The project's website is located at https://github.com/emn178/js-sha256 Author: Chen, Yi-Cyuan (emn178@gmail.com) # fill-range [](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W8YFZ425KND68) [](https://www.npmjs.com/package/fill-range) [](https://npmjs.org/package/fill-range) [](https://npmjs.org/package/fill-range) [](https://travis-ci.org/jonschlinkert/fill-range) > Fill in a range of numbers or letters, optionally passing an increment or `step` to use, or create a regex-compatible range with `options.toRegex` Please consider following this project's author, [Jon Schlinkert](https://github.com/jonschlinkert), and consider starring the project to show your :heart: and support. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save fill-range ``` ## Usage Expands numbers and letters, optionally using a `step` as the last argument. _(Numbers may be defined as JavaScript numbers or strings)_. ```js const fill = require('fill-range'); // fill(from, to[, step, options]); console.log(fill('1', '10')); //=> ['1', '2', '3', '4', '5', '6', '7', '8', '9', '10'] console.log(fill('1', '10', { toRegex: true })); //=> [1-9]|10 ``` **Params** * `from`: **{String|Number}** the number or letter to start with * `to`: **{String|Number}** the number or letter to end with * `step`: **{String|Number|Object|Function}** Optionally pass a [step](#optionsstep) to use. * `options`: **{Object|Function}**: See all available [options](#options) ## Examples By default, an array of values is returned. **Alphabetical ranges** ```js console.log(fill('a', 'e')); //=> ['a', 'b', 'c', 'd', 'e'] console.log(fill('A', 'E')); //=> [ 'A', 'B', 'C', 'D', 'E' ] ``` **Numerical ranges** Numbers can be defined as actual numbers or strings. ```js console.log(fill(1, 5)); //=> [ 1, 2, 3, 4, 5 ] console.log(fill('1', '5')); //=> [ 1, 2, 3, 4, 5 ] ``` **Negative ranges** Numbers can be defined as actual numbers or strings. ```js console.log(fill('-5', '-1')); //=> [ '-5', '-4', '-3', '-2', '-1' ] console.log(fill('-5', '5')); //=> [ '-5', '-4', '-3', '-2', '-1', '0', '1', '2', '3', '4', '5' ] ``` **Steps (increments)** ```js // numerical ranges with increments console.log(fill('0', '25', 4)); //=> [ '0', '4', '8', '12', '16', '20', '24' ] console.log(fill('0', '25', 5)); //=> [ '0', '5', '10', '15', '20', '25' ] console.log(fill('0', '25', 6)); //=> [ '0', '6', '12', '18', '24' ] // alphabetical ranges with increments console.log(fill('a', 'z', 4)); //=> [ 'a', 'e', 'i', 'm', 'q', 'u', 'y' ] console.log(fill('a', 'z', 5)); //=> [ 'a', 'f', 'k', 'p', 'u', 'z' ] console.log(fill('a', 'z', 6)); //=> [ 'a', 'g', 'm', 's', 'y' ] ``` ## Options ### options.step **Type**: `number` (formatted as a string or number) **Default**: `undefined` **Description**: The increment to use for the range. Can be used with letters or numbers. **Example(s)** ```js // numbers console.log(fill('1', '10', 2)); //=> [ '1', '3', '5', '7', '9' ] console.log(fill('1', '10', 3)); //=> [ '1', '4', '7', '10' ] console.log(fill('1', '10', 4)); //=> [ '1', '5', '9' ] // letters console.log(fill('a', 'z', 5)); //=> [ 'a', 'f', 'k', 'p', 'u', 'z' ] console.log(fill('a', 'z', 7)); //=> [ 'a', 'h', 'o', 'v' ] console.log(fill('a', 'z', 9)); //=> [ 'a', 'j', 's' ] ``` ### options.strictRanges **Type**: `boolean` **Default**: `false` **Description**: By default, `null` is returned when an invalid range is passed. Enable this option to throw a `RangeError` on invalid ranges. **Example(s)** The following are all invalid: ```js fill('1.1', '2'); // decimals not supported in ranges fill('a', '2'); // incompatible range values fill(1, 10, 'foo'); // invalid "step" argument ``` ### options.stringify **Type**: `boolean` **Default**: `undefined` **Description**: Cast all returned values to strings. By default, integers are returned as numbers. **Example(s)** ```js console.log(fill(1, 5)); //=> [ 1, 2, 3, 4, 5 ] console.log(fill(1, 5, { stringify: true })); //=> [ '1', '2', '3', '4', '5' ] ``` ### options.toRegex **Type**: `boolean` **Default**: `undefined` **Description**: Create a regex-compatible source string, instead of expanding values to an array. **Example(s)** ```js // alphabetical range console.log(fill('a', 'e', { toRegex: true })); //=> '[a-e]' // alphabetical with step console.log(fill('a', 'z', 3, { toRegex: true })); //=> 'a|d|g|j|m|p|s|v|y' // numerical range console.log(fill('1', '100', { toRegex: true })); //=> '[1-9]|[1-9][0-9]|100' // numerical range with zero padding console.log(fill('000001', '100000', { toRegex: true })); //=> '0{5}[1-9]|0{4}[1-9][0-9]|0{3}[1-9][0-9]{2}|0{2}[1-9][0-9]{3}|0[1-9][0-9]{4}|100000' ``` ### options.transform **Type**: `function` **Default**: `undefined` **Description**: Customize each value in the returned array (or [string](#optionstoRegex)). _(you can also pass this function as the last argument to `fill()`)_. **Example(s)** ```js // add zero padding console.log(fill(1, 5, value => String(value).padStart(4, '0'))); //=> ['0001', '0002', '0003', '0004', '0005'] ``` ## About <details> <summary><strong>Contributing</strong></summary> Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). </details> <details> <summary><strong>Running Tests</strong></summary> Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` </details> <details> <summary><strong>Building docs</strong></summary> _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` </details> ### Contributors | **Commits** | **Contributor** | | --- | --- | | 116 | [jonschlinkert](https://github.com/jonschlinkert) | | 4 | [paulmillr](https://github.com/paulmillr) | | 2 | [realityking](https://github.com/realityking) | | 2 | [bluelovers](https://github.com/bluelovers) | | 1 | [edorivai](https://github.com/edorivai) | | 1 | [wtgtybhertgeghgtwtg](https://github.com/wtgtybhertgeghgtwtg) | ### Author **Jon Schlinkert** * [GitHub Profile](https://github.com/jonschlinkert) * [Twitter Profile](https://twitter.com/jonschlinkert) * [LinkedIn Profile](https://linkedin.com/in/jonschlinkert) Please consider supporting me on Patreon, or [start your own Patreon page](https://patreon.com/invite/bxpbvm)! <a href="https://www.patreon.com/jonschlinkert"> <img src="https://c5.patreon.com/external/logo/become_a_patron_button@2x.png" height="50"> </a> ### License Copyright © 2019, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT License](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.8.0, on April 08, 2019._ # hasurl [![NPM Version][npm-image]][npm-url] [![Build Status][travis-image]][travis-url] > Determine whether Node.js' native [WHATWG `URL`](https://nodejs.org/api/url.html#url_the_whatwg_url_api) implementation is available. ## Installation [Node.js](http://nodejs.org/) `>= 4` is required. To install, type this at the command line: ```shell npm install hasurl ``` ## Usage ```js const hasURL = require('hasurl'); if (hasURL()) { // supported } else { // fallback } ``` [npm-image]: https://img.shields.io/npm/v/hasurl.svg [npm-url]: https://npmjs.org/package/hasurl [travis-image]: https://img.shields.io/travis/stevenvachon/hasurl.svg [travis-url]: https://travis-ci.org/stevenvachon/hasurl <a name="table"></a> # Table > Produces a string that represents array data in a text table. [](https://github.com/gajus/table/actions) [](https://coveralls.io/github/gajus/table) [](https://www.npmjs.org/package/table) [](https://github.com/gajus/canonical) [](https://twitter.com/kuizinas) * [Table](#table) * [Features](#table-features) * [Install](#table-install) * [Usage](#table-usage) * [API](#table-api) * [table](#table-api-table-1) * [createStream](#table-api-createstream) * [getBorderCharacters](#table-api-getbordercharacters)  <a name="table-features"></a> ## Features * Works with strings containing [fullwidth](https://en.wikipedia.org/wiki/Halfwidth_and_fullwidth_forms) characters. * Works with strings containing [ANSI escape codes](https://en.wikipedia.org/wiki/ANSI_escape_code). * Configurable border characters. * Configurable content alignment per column. * Configurable content padding per column. * Configurable column width. * Text wrapping. <a name="table-install"></a> ## Install ```bash npm install table ``` [](https://www.buymeacoffee.com/gajus) [](https://www.patreon.com/gajus) <a name="table-usage"></a> ## Usage ```js import { table } from 'table'; // Using commonjs? // const { table } = require('table'); const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'] ]; console.log(table(data)); ``` ``` ╔════╤════╤════╗ ║ 0A │ 0B │ 0C ║ ╟────┼────┼────╢ ║ 1A │ 1B │ 1C ║ ╟────┼────┼────╢ ║ 2A │ 2B │ 2C ║ ╚════╧════╧════╝ ``` <a name="table-api"></a> ## API <a name="table-api-table-1"></a> ### table Returns the string in the table format **Parameters:** - **_data_:** The data to display - Type: `any[][]` - Required: `true` - **_config_:** Table configuration - Type: `object` - Required: `false` <a name="table-api-table-1-config-border"></a> ##### config.border Type: `{ [type: string]: string }`\ Default: `honeywell` [template](#getbordercharacters) Custom borders. The keys are any of: - `topLeft`, `topRight`, `topBody`,`topJoin` - `bottomLeft`, `bottomRight`, `bottomBody`, `bottomJoin` - `joinLeft`, `joinRight`, `joinBody`, `joinJoin` - `bodyLeft`, `bodyRight`, `bodyJoin` - `headerJoin` ```js const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'] ]; const config = { border: { topBody: `─`, topJoin: `┬`, topLeft: `┌`, topRight: `┐`, bottomBody: `─`, bottomJoin: `┴`, bottomLeft: `└`, bottomRight: `┘`, bodyLeft: `│`, bodyRight: `│`, bodyJoin: `│`, joinBody: `─`, joinLeft: `├`, joinRight: `┤`, joinJoin: `┼` } }; console.log(table(data, config)); ``` ``` ┌────┬────┬────┐ │ 0A │ 0B │ 0C │ ├────┼────┼────┤ │ 1A │ 1B │ 1C │ ├────┼────┼────┤ │ 2A │ 2B │ 2C │ └────┴────┴────┘ ``` <a name="table-api-table-1-config-drawverticalline"></a> ##### config.drawVerticalLine Type: `(lineIndex: number, columnCount: number) => boolean`\ Default: `() => true` It is used to tell whether to draw a vertical line. This callback is called for each vertical border of the table. If the table has `n` columns, then the `index` parameter is alternatively received all numbers in range `[0, n]` inclusively. ```js const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'], ['3A', '3B', '3C'], ['4A', '4B', '4C'] ]; const config = { drawVerticalLine: (lineIndex, columnCount) => { return lineIndex === 0 || lineIndex === columnCount; } }; console.log(table(data, config)); ``` ``` ╔════════════╗ ║ 0A 0B 0C ║ ╟────────────╢ ║ 1A 1B 1C ║ ╟────────────╢ ║ 2A 2B 2C ║ ╟────────────╢ ║ 3A 3B 3C ║ ╟────────────╢ ║ 4A 4B 4C ║ ╚════════════╝ ``` <a name="table-api-table-1-config-drawhorizontalline"></a> ##### config.drawHorizontalLine Type: `(lineIndex: number, rowCount: number) => boolean`\ Default: `() => true` It is used to tell whether to draw a horizontal line. This callback is called for each horizontal border of the table. If the table has `n` rows, then the `index` parameter is alternatively received all numbers in range `[0, n]` inclusively. If the table has `n` rows and contains the header, then the range will be `[0, n+1]` inclusively. ```js const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'], ['3A', '3B', '3C'], ['4A', '4B', '4C'] ]; const config = { drawHorizontalLine: (lineIndex, rowCount) => { return lineIndex === 0 || lineIndex === 1 || lineIndex === rowCount - 1 || lineIndex === rowCount; } }; console.log(table(data, config)); ``` ``` ╔════╤════╤════╗ ║ 0A │ 0B │ 0C ║ ╟────┼────┼────╢ ║ 1A │ 1B │ 1C ║ ║ 2A │ 2B │ 2C ║ ║ 3A │ 3B │ 3C ║ ╟────┼────┼────╢ ║ 4A │ 4B │ 4C ║ ╚════╧════╧════╝ ``` <a name="table-api-table-1-config-singleline"></a> ##### config.singleLine Type: `boolean`\ Default: `false` If `true`, horizontal lines inside the table are not drawn. This option also overrides the `config.drawHorizontalLine` if specified. ```js const data = [ ['-rw-r--r--', '1', 'pandorym', 'staff', '1529', 'May 23 11:25', 'LICENSE'], ['-rw-r--r--', '1', 'pandorym', 'staff', '16327', 'May 23 11:58', 'README.md'], ['drwxr-xr-x', '76', 'pandorym', 'staff', '2432', 'May 23 12:02', 'dist'], ['drwxr-xr-x', '634', 'pandorym', 'staff', '20288', 'May 23 11:54', 'node_modules'], ['-rw-r--r--', '1,', 'pandorym', 'staff', '525688', 'May 23 11:52', 'package-lock.json'], ['-rw-r--r--@', '1', 'pandorym', 'staff', '2440', 'May 23 11:25', 'package.json'], ['drwxr-xr-x', '27', 'pandorym', 'staff', '864', 'May 23 11:25', 'src'], ['drwxr-xr-x', '20', 'pandorym', 'staff', '640', 'May 23 11:25', 'test'], ]; const config = { singleLine: true }; console.log(table(data, config)); ``` ``` ╔═════════════╤═════╤══════════╤═══════╤════════╤══════════════╤═══════════════════╗ ║ -rw-r--r-- │ 1 │ pandorym │ staff │ 1529 │ May 23 11:25 │ LICENSE ║ ║ -rw-r--r-- │ 1 │ pandorym │ staff │ 16327 │ May 23 11:58 │ README.md ║ ║ drwxr-xr-x │ 76 │ pandorym │ staff │ 2432 │ May 23 12:02 │ dist ║ ║ drwxr-xr-x │ 634 │ pandorym │ staff │ 20288 │ May 23 11:54 │ node_modules ║ ║ -rw-r--r-- │ 1, │ pandorym │ staff │ 525688 │ May 23 11:52 │ package-lock.json ║ ║ -rw-r--r--@ │ 1 │ pandorym │ staff │ 2440 │ May 23 11:25 │ package.json ║ ║ drwxr-xr-x │ 27 │ pandorym │ staff │ 864 │ May 23 11:25 │ src ║ ║ drwxr-xr-x │ 20 │ pandorym │ staff │ 640 │ May 23 11:25 │ test ║ ╚═════════════╧═════╧══════════╧═══════╧════════╧══════════════╧═══════════════════╝ ``` <a name="table-api-table-1-config-columns"></a> ##### config.columns Type: `Column[] | { [columnIndex: number]: Column }` Column specific configurations. <a name="table-api-table-1-config-columns-config-columns-width"></a> ###### config.columns[*].width Type: `number`\ Default: the maximum cell widths of the column Column width (excluding the paddings). ```js const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'] ]; const config = { columns: { 1: { width: 10 } } }; console.log(table(data, config)); ``` ``` ╔════╤════════════╤════╗ ║ 0A │ 0B │ 0C ║ ╟────┼────────────┼────╢ ║ 1A │ 1B │ 1C ║ ╟────┼────────────┼────╢ ║ 2A │ 2B │ 2C ║ ╚════╧════════════╧════╝ ``` <a name="table-api-table-1-config-columns-config-columns-alignment"></a> ###### config.columns[*].alignment Type: `'center' | 'justify' | 'left' | 'right'`\ Default: `'left'` Cell content horizontal alignment ```js const data = [ ['0A', '0B', '0C', '0D 0E 0F'], ['1A', '1B', '1C', '1D 1E 1F'], ['2A', '2B', '2C', '2D 2E 2F'], ]; const config = { columnDefault: { width: 10, }, columns: [ { alignment: 'left' }, { alignment: 'center' }, { alignment: 'right' }, { alignment: 'justify' } ], }; console.log(table(data, config)); ``` ``` ╔════════════╤════════════╤════════════╤════════════╗ ║ 0A │ 0B │ 0C │ 0D 0E 0F ║ ╟────────────┼────────────┼────────────┼────────────╢ ║ 1A │ 1B │ 1C │ 1D 1E 1F ║ ╟────────────┼────────────┼────────────┼────────────╢ ║ 2A │ 2B │ 2C │ 2D 2E 2F ║ ╚════════════╧════════════╧════════════╧════════════╝ ``` <a name="table-api-table-1-config-columns-config-columns-verticalalignment"></a> ###### config.columns[*].verticalAlignment Type: `'top' | 'middle' | 'bottom'`\ Default: `'top'` Cell content vertical alignment ```js const data = [ ['A', 'B', 'C', 'DEF'], ]; const config = { columnDefault: { width: 1, }, columns: [ { verticalAlignment: 'top' }, { verticalAlignment: 'middle' }, { verticalAlignment: 'bottom' }, ], }; console.log(table(data, config)); ``` ``` ╔═══╤═══╤═══╤═══╗ ║ A │ │ │ D ║ ║ │ B │ │ E ║ ║ │ │ C │ F ║ ╚═══╧═══╧═══╧═══╝ ``` <a name="table-api-table-1-config-columns-config-columns-paddingleft"></a> ###### config.columns[*].paddingLeft Type: `number`\ Default: `1` The number of whitespaces used to pad the content on the left. <a name="table-api-table-1-config-columns-config-columns-paddingright"></a> ###### config.columns[*].paddingRight Type: `number`\ Default: `1` The number of whitespaces used to pad the content on the right. The `paddingLeft` and `paddingRight` options do not count on the column width. So the column has `width = 5`, `paddingLeft = 2` and `paddingRight = 2` will have the total width is `9`. ```js const data = [ ['0A', 'AABBCC', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'] ]; const config = { columns: [ { paddingLeft: 3 }, { width: 2, paddingRight: 3 } ] }; console.log(table(data, config)); ``` ``` ╔══════╤══════╤════╗ ║ 0A │ AA │ 0C ║ ║ │ BB │ ║ ║ │ CC │ ║ ╟──────┼──────┼────╢ ║ 1A │ 1B │ 1C ║ ╟──────┼──────┼────╢ ║ 2A │ 2B │ 2C ║ ╚══════╧══════╧════╝ ``` <a name="table-api-table-1-config-columns-config-columns-truncate"></a> ###### config.columns[*].truncate Type: `number`\ Default: `Infinity` The number of characters is which the content will be truncated. To handle a content that overflows the container width, `table` package implements [text wrapping](#config.columns[*].wrapWord). However, sometimes you may want to truncate content that is too long to be displayed in the table. ```js const data = [ ['Lorem ipsum dolor sit amet, consectetur adipiscing elit. Phasellus pulvinar nibh sed mauris convallis dapibus. Nunc venenatis tempus nulla sit amet viverra.'] ]; const config = { columns: [ { width: 20, truncate: 100 } ] }; console.log(table(data, config)); ``` ``` ╔══════════════════════╗ ║ Lorem ipsum dolor si ║ ║ t amet, consectetur ║ ║ adipiscing elit. Pha ║ ║ sellus pulvinar nibh ║ ║ sed mauris convall… ║ ╚══════════════════════╝ ``` <a name="table-api-table-1-config-columns-config-columns-wrapword"></a> ###### config.columns[*].wrapWord Type: `boolean`\ Default: `false` The `table` package implements auto text wrapping, i.e., text that has the width greater than the container width will be separated into multiple lines at the nearest space or one of the special characters: `\|/_.,;-`. When `wrapWord` is `false`: ```js const data = [ ['Lorem ipsum dolor sit amet, consectetur adipiscing elit. Phasellus pulvinar nibh sed mauris convallis dapibus. Nunc venenatis tempus nulla sit amet viverra.'] ]; const config = { columns: [ { width: 20 } ] }; console.log(table(data, config)); ``` ``` ╔══════════════════════╗ ║ Lorem ipsum dolor si ║ ║ t amet, consectetur ║ ║ adipiscing elit. Pha ║ ║ sellus pulvinar nibh ║ ║ sed mauris convallis ║ ║ dapibus. Nunc venena ║ ║ tis tempus nulla sit ║ ║ amet viverra. ║ ╚══════════════════════╝ ``` When `wrapWord` is `true`: ``` ╔══════════════════════╗ ║ Lorem ipsum dolor ║ ║ sit amet, ║ ║ consectetur ║ ║ adipiscing elit. ║ ║ Phasellus pulvinar ║ ║ nibh sed mauris ║ ║ convallis dapibus. ║ ║ Nunc venenatis ║ ║ tempus nulla sit ║ ║ amet viverra. ║ ╚══════════════════════╝ ``` <a name="table-api-table-1-config-columndefault"></a> ##### config.columnDefault Type: `Column`\ Default: `{}` The default configuration for all columns. Column-specific settings will overwrite the default values. <a name="table-api-table-1-config-header"></a> ##### config.header Type: `object` Header configuration. *Deprecated in favor of the new spanning cells API.* The header configuration inherits the most of the column's, except: - `content` **{string}**: the header content. - `width:` calculate based on the content width automatically. - `alignment:` `center` be default. - `verticalAlignment:` is not supported. - `config.border.topJoin` will be `config.border.topBody` for prettier. ```js const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'], ]; const config = { columnDefault: { width: 10, }, header: { alignment: 'center', content: 'THE HEADER\nThis is the table about something', }, } console.log(table(data, config)); ``` ``` ╔══════════════════════════════════════╗ ║ THE HEADER ║ ║ This is the table about something ║ ╟────────────┬────────────┬────────────╢ ║ 0A │ 0B │ 0C ║ ╟────────────┼────────────┼────────────╢ ║ 1A │ 1B │ 1C ║ ╟────────────┼────────────┼────────────╢ ║ 2A │ 2B │ 2C ║ ╚════════════╧════════════╧════════════╝ ``` <a name="table-api-table-1-config-spanningcells"></a> ##### config.spanningCells Type: `SpanningCellConfig[]` Spanning cells configuration. The configuration should be straightforward: just specify an array of minimal cell configurations including the position of top-left cell and the number of columns and/or rows will be expanded from it. The content of overlap cells will be ignored to make the `data` shape be consistent. By default, the configuration of column that the top-left cell belongs to will be applied to the whole spanning cell, except: * The `width` will be summed up of all spanning columns. * The `paddingRight` will be received from the right-most column intentionally. Advances customized column-like styles can be configurable to each spanning cell to overwrite the default behavior. ```js const data = [ ['Test Coverage Report', '', '', '', '', ''], ['Module', 'Component', 'Test Cases', 'Failures', 'Durations', 'Success Rate'], ['Services', 'User', '50', '30', '3m 7s', '60.0%'], ['', 'Payment', '100', '80', '7m 15s', '80.0%'], ['Subtotal', '', '150', '110', '10m 22s', '73.3%'], ['Controllers', 'User', '24', '18', '1m 30s', '75.0%'], ['', 'Payment', '30', '24', '50s', '80.0%'], ['Subtotal', '', '54', '42', '2m 20s', '77.8%'], ['Total', '', '204', '152', '12m 42s', '74.5%'], ]; const config = { columns: [ { alignment: 'center', width: 12 }, { alignment: 'center', width: 10 }, { alignment: 'right' }, { alignment: 'right' }, { alignment: 'right' }, { alignment: 'right' } ], spanningCells: [ { col: 0, row: 0, colSpan: 6 }, { col: 0, row: 2, rowSpan: 2, verticalAlignment: 'middle'}, { col: 0, row: 4, colSpan: 2, alignment: 'right'}, { col: 0, row: 5, rowSpan: 2, verticalAlignment: 'middle'}, { col: 0, row: 7, colSpan: 2, alignment: 'right' }, { col: 0, row: 8, colSpan: 2, alignment: 'right' } ], }; console.log(table(data, config)); ``` ``` ╔══════════════════════════════════════════════════════════════════════════════╗ ║ Test Coverage Report ║ ╟──────────────┬────────────┬────────────┬──────────┬───────────┬──────────────╢ ║ Module │ Component │ Test Cases │ Failures │ Durations │ Success Rate ║ ╟──────────────┼────────────┼────────────┼──────────┼───────────┼──────────────╢ ║ │ User │ 50 │ 30 │ 3m 7s │ 60.0% ║ ║ Services ├────────────┼────────────┼──────────┼───────────┼──────────────╢ ║ │ Payment │ 100 │ 80 │ 7m 15s │ 80.0% ║ ╟──────────────┴────────────┼────────────┼──────────┼───────────┼──────────────╢ ║ Subtotal │ 150 │ 110 │ 10m 22s │ 73.3% ║ ╟──────────────┬────────────┼────────────┼──────────┼───────────┼──────────────╢ ║ │ User │ 24 │ 18 │ 1m 30s │ 75.0% ║ ║ Controllers ├────────────┼────────────┼──────────┼───────────┼──────────────╢ ║ │ Payment │ 30 │ 24 │ 50s │ 80.0% ║ ╟──────────────┴────────────┼────────────┼──────────┼───────────┼──────────────╢ ║ Subtotal │ 54 │ 42 │ 2m 20s │ 77.8% ║ ╟───────────────────────────┼────────────┼──────────┼───────────┼──────────────╢ ║ Total │ 204 │ 152 │ 12m 42s │ 74.5% ║ ╚═══════════════════════════╧════════════╧══════════╧═══════════╧══════════════╝ ``` <a name="table-api-createstream"></a> ### createStream `table` package exports `createStream` function used to draw a table and append rows. **Parameter:** - _**config:**_ the same as `table`'s, except `config.columnDefault.width` and `config.columnCount` must be provided. ```js import { createStream } from 'table'; const config = { columnDefault: { width: 50 }, columnCount: 1 }; const stream = createStream(config); setInterval(() => { stream.write([new Date()]); }, 500); ```  `table` package uses ANSI escape codes to overwrite the output of the last line when a new row is printed. The underlying implementation is explained in this [Stack Overflow answer](http://stackoverflow.com/a/32938658/368691). Streaming supports all of the configuration properties and functionality of a static table (such as auto text wrapping, alignment and padding), e.g. ```js import { createStream } from 'table'; import _ from 'lodash'; const config = { columnDefault: { width: 50 }, columnCount: 3, columns: [ { width: 10, alignment: 'right' }, { alignment: 'center' }, { width: 10 } ] }; const stream = createStream(config); let i = 0; setInterval(() => { let random; random = _.sample('abcdefghijklmnopqrstuvwxyz', _.random(1, 30)).join(''); stream.write([i++, new Date(), random]); }, 500); ```  <a name="table-api-getbordercharacters"></a> ### getBorderCharacters **Parameter:** - **_template_** - Type: `'honeywell' | 'norc' | 'ramac' | 'void'` - Required: `true` You can load one of the predefined border templates using `getBorderCharacters` function. ```js import { table, getBorderCharacters } from 'table'; const data = [ ['0A', '0B', '0C'], ['1A', '1B', '1C'], ['2A', '2B', '2C'] ]; const config = { border: getBorderCharacters(`name of the template`) }; console.log(table(data, config)); ``` ``` # honeywell ╔════╤════╤════╗ ║ 0A │ 0B │ 0C ║ ╟────┼────┼────╢ ║ 1A │ 1B │ 1C ║ ╟────┼────┼────╢ ║ 2A │ 2B │ 2C ║ ╚════╧════╧════╝ # norc ┌────┬────┬────┐ │ 0A │ 0B │ 0C │ ├────┼────┼────┤ │ 1A │ 1B │ 1C │ ├────┼────┼────┤ │ 2A │ 2B │ 2C │ └────┴────┴────┘ # ramac (ASCII; for use in terminals that do not support Unicode characters) +----+----+----+ | 0A | 0B | 0C | |----|----|----| | 1A | 1B | 1C | |----|----|----| | 2A | 2B | 2C | +----+----+----+ # void (no borders; see "borderless table" section of the documentation) 0A 0B 0C 1A 1B 1C 2A 2B 2C ``` Raise [an issue](https://github.com/gajus/table/issues) if you'd like to contribute a new border template. <a name="table-api-getbordercharacters-borderless-table"></a> #### Borderless Table Simply using `void` border character template creates a table with a lot of unnecessary spacing. To create a more pleasant to the eye table, reset the padding and remove the joining rows, e.g. ```js const output = table(data, { border: getBorderCharacters('void'), columnDefault: { paddingLeft: 0, paddingRight: 1 }, drawHorizontalLine: () => false } ); console.log(output); ``` ``` 0A 0B 0C 1A 1B 1C 2A 2B 2C ``` An ini format parser and serializer for node. Sections are treated as nested objects. Items before the first heading are saved on the object directly. ## Usage Consider an ini-file `config.ini` that looks like this: ; this comment is being ignored scope = global [database] user = dbuser password = dbpassword database = use_this_database [paths.default] datadir = /var/lib/data array[] = first value array[] = second value array[] = third value You can read, manipulate and write the ini-file like so: var fs = require('fs') , ini = require('ini') var config = ini.parse(fs.readFileSync('./config.ini', 'utf-8')) config.scope = 'local' config.database.database = 'use_another_database' config.paths.default.tmpdir = '/tmp' delete config.paths.default.datadir config.paths.default.array.push('fourth value') fs.writeFileSync('./config_modified.ini', ini.stringify(config, { section: 'section' })) This will result in a file called `config_modified.ini` being written to the filesystem with the following content: [section] scope=local [section.database] user=dbuser password=dbpassword database=use_another_database [section.paths.default] tmpdir=/tmp array[]=first value array[]=second value array[]=third value array[]=fourth value ## API ### decode(inistring) Decode the ini-style formatted `inistring` into a nested object. ### parse(inistring) Alias for `decode(inistring)` ### encode(object, [options]) Encode the object `object` into an ini-style formatted string. If the optional parameter `section` is given, then all top-level properties of the object are put into this section and the `section`-string is prepended to all sub-sections, see the usage example above. The `options` object may contain the following: * `section` A string which will be the first `section` in the encoded ini data. Defaults to none. * `whitespace` Boolean to specify whether to put whitespace around the `=` character. By default, whitespace is omitted, to be friendly to some persnickety old parsers that don't tolerate it well. But some find that it's more human-readable and pretty with the whitespace. For backwards compatibility reasons, if a `string` options is passed in, then it is assumed to be the `section` value. ### stringify(object, [options]) Alias for `encode(object, [options])` ### safe(val) Escapes the string `val` such that it is safe to be used as a key or value in an ini-file. Basically escapes quotes. For example ini.safe('"unsafe string"') would result in "\"unsafe string\"" ### unsafe(val) Unescapes the string `val` file-uri-to-path ================ ### Convert a `file:` URI to a file path [](https://travis-ci.org/TooTallNate/file-uri-to-path) Accepts a `file:` URI and returns a regular file path suitable for use with the `fs` module functions. Installation ------------ Install with `npm`: ``` bash $ npm install file-uri-to-path ``` Example ------- ``` js var uri2path = require('file-uri-to-path'); uri2path('file://localhost/c|/WINDOWS/clock.avi'); // "c:\\WINDOWS\\clock.avi" uri2path('file:///c|/WINDOWS/clock.avi'); // "c:\\WINDOWS\\clock.avi" uri2path('file://localhost/c:/WINDOWS/clock.avi'); // "c:\\WINDOWS\\clock.avi" uri2path('file://hostname/path/to/the%20file.txt'); // "\\\\hostname\\path\\to\\the file.txt" uri2path('file:///c:/path/to/the%20file.txt'); // "c:\\path\\to\\the file.txt" ``` API --- ### fileUriToPath(String uri) → String License ------- (The MIT License) Copyright (c) 2014 Nathan Rajlich &lt;nathan@tootallnate.net&gt; Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # which-module > Find the module object for something that was require()d [](https://travis-ci.org/nexdrew/which-module) [](https://coveralls.io/github/nexdrew/which-module?branch=master) [](https://github.com/conventional-changelog/standard-version) Find the `module` object in `require.cache` for something that was `require()`d or `import`ed - essentially a reverse `require()` lookup. Useful for libs that want to e.g. lookup a filename for a module or submodule that it did not `require()` itself. ## Install and Usage ``` npm install --save which-module ``` ```js const whichModule = require('which-module') console.log(whichModule(require('something'))) // Module { // id: '/path/to/project/node_modules/something/index.js', // exports: [Function], // parent: ..., // filename: '/path/to/project/node_modules/something/index.js', // loaded: true, // children: [], // paths: [ '/path/to/project/node_modules/something/node_modules', // '/path/to/project/node_modules', // '/path/to/node_modules', // '/path/node_modules', // '/node_modules' ] } ``` ## API ### `whichModule(exported)` Return the [`module` object](https://nodejs.org/api/modules.html#modules_the_module_object), if any, that represents the given argument in the `require.cache`. `exported` can be anything that was previously `require()`d or `import`ed as a module, submodule, or dependency - which means `exported` is identical to the `module.exports` returned by this method. If `exported` did not come from the `exports` of a `module` in `require.cache`, then this method returns `null`. ## License ISC © Contributors semver(1) -- The semantic versioner for npm =========================================== ## Install ```bash npm install semver ```` ## Usage As a node module: ```js const semver = require('semver') semver.valid('1.2.3') // '1.2.3' semver.valid('a.b.c') // null semver.clean(' =v1.2.3 ') // '1.2.3' semver.satisfies('1.2.3', '1.x || >=2.5.0 || 5.0.0 - 7.2.3') // true semver.gt('1.2.3', '9.8.7') // false semver.lt('1.2.3', '9.8.7') // true semver.minVersion('>=1.0.0') // '1.0.0' semver.valid(semver.coerce('v2')) // '2.0.0' semver.valid(semver.coerce('42.6.7.9.3-alpha')) // '42.6.7' ``` As a command-line utility: ``` $ semver -h A JavaScript implementation of the https://semver.org/ specification Copyright Isaac Z. Schlueter Usage: semver [options] <version> [<version> [...]] Prints valid versions sorted by SemVer precedence Options: -r --range <range> Print versions that match the specified range. -i --increment [<level>] Increment a version by the specified level. Level can be one of: major, minor, patch, premajor, preminor, prepatch, or prerelease. Default level is 'patch'. Only one version may be specified. --preid <identifier> Identifier to be used to prefix premajor, preminor, prepatch or prerelease version increments. -l --loose Interpret versions and ranges loosely -p --include-prerelease Always include prerelease versions in range matching -c --coerce Coerce a string into SemVer if possible (does not imply --loose) --rtl Coerce version strings right to left --ltr Coerce version strings left to right (default) Program exits successfully if any valid version satisfies all supplied ranges, and prints all satisfying versions. If no satisfying versions are found, then exits failure. Versions are printed in ascending order, so supplying multiple versions to the utility will just sort them. ``` ## Versions A "version" is described by the `v2.0.0` specification found at <https://semver.org/>. A leading `"="` or `"v"` character is stripped off and ignored. ## Ranges A `version range` is a set of `comparators` which specify versions that satisfy the range. A `comparator` is composed of an `operator` and a `version`. The set of primitive `operators` is: * `<` Less than * `<=` Less than or equal to * `>` Greater than * `>=` Greater than or equal to * `=` Equal. If no operator is specified, then equality is assumed, so this operator is optional, but MAY be included. For example, the comparator `>=1.2.7` would match the versions `1.2.7`, `1.2.8`, `2.5.3`, and `1.3.9`, but not the versions `1.2.6` or `1.1.0`. Comparators can be joined by whitespace to form a `comparator set`, which is satisfied by the **intersection** of all of the comparators it includes. A range is composed of one or more comparator sets, joined by `||`. A version matches a range if and only if every comparator in at least one of the `||`-separated comparator sets is satisfied by the version. For example, the range `>=1.2.7 <1.3.0` would match the versions `1.2.7`, `1.2.8`, and `1.2.99`, but not the versions `1.2.6`, `1.3.0`, or `1.1.0`. The range `1.2.7 || >=1.2.9 <2.0.0` would match the versions `1.2.7`, `1.2.9`, and `1.4.6`, but not the versions `1.2.8` or `2.0.0`. ### Prerelease Tags If a version has a prerelease tag (for example, `1.2.3-alpha.3`) then it will only be allowed to satisfy comparator sets if at least one comparator with the same `[major, minor, patch]` tuple also has a prerelease tag. For example, the range `>1.2.3-alpha.3` would be allowed to match the version `1.2.3-alpha.7`, but it would *not* be satisfied by `3.4.5-alpha.9`, even though `3.4.5-alpha.9` is technically "greater than" `1.2.3-alpha.3` according to the SemVer sort rules. The version range only accepts prerelease tags on the `1.2.3` version. The version `3.4.5` *would* satisfy the range, because it does not have a prerelease flag, and `3.4.5` is greater than `1.2.3-alpha.7`. The purpose for this behavior is twofold. First, prerelease versions frequently are updated very quickly, and contain many breaking changes that are (by the author's design) not yet fit for public consumption. Therefore, by default, they are excluded from range matching semantics. Second, a user who has opted into using a prerelease version has clearly indicated the intent to use *that specific* set of alpha/beta/rc versions. By including a prerelease tag in the range, the user is indicating that they are aware of the risk. However, it is still not appropriate to assume that they have opted into taking a similar risk on the *next* set of prerelease versions. Note that this behavior can be suppressed (treating all prerelease versions as if they were normal versions, for the purpose of range matching) by setting the `includePrerelease` flag on the options object to any [functions](https://github.com/npm/node-semver#functions) that do range matching. #### Prerelease Identifiers The method `.inc` takes an additional `identifier` string argument that will append the value of the string as a prerelease identifier: ```javascript semver.inc('1.2.3', 'prerelease', 'beta') // '1.2.4-beta.0' ``` command-line example: ```bash $ semver 1.2.3 -i prerelease --preid beta 1.2.4-beta.0 ``` Which then can be used to increment further: ```bash $ semver 1.2.4-beta.0 -i prerelease 1.2.4-beta.1 ``` ### Advanced Range Syntax Advanced range syntax desugars to primitive comparators in deterministic ways. Advanced ranges may be combined in the same way as primitive comparators using white space or `||`. #### Hyphen Ranges `X.Y.Z - A.B.C` Specifies an inclusive set. * `1.2.3 - 2.3.4` := `>=1.2.3 <=2.3.4` If a partial version is provided as the first version in the inclusive range, then the missing pieces are replaced with zeroes. * `1.2 - 2.3.4` := `>=1.2.0 <=2.3.4` If a partial version is provided as the second version in the inclusive range, then all versions that start with the supplied parts of the tuple are accepted, but nothing that would be greater than the provided tuple parts. * `1.2.3 - 2.3` := `>=1.2.3 <2.4.0` * `1.2.3 - 2` := `>=1.2.3 <3.0.0` #### X-Ranges `1.2.x` `1.X` `1.2.*` `*` Any of `X`, `x`, or `*` may be used to "stand in" for one of the numeric values in the `[major, minor, patch]` tuple. * `*` := `>=0.0.0` (Any version satisfies) * `1.x` := `>=1.0.0 <2.0.0` (Matching major version) * `1.2.x` := `>=1.2.0 <1.3.0` (Matching major and minor versions) A partial version range is treated as an X-Range, so the special character is in fact optional. * `""` (empty string) := `*` := `>=0.0.0` * `1` := `1.x.x` := `>=1.0.0 <2.0.0` * `1.2` := `1.2.x` := `>=1.2.0 <1.3.0` #### Tilde Ranges `~1.2.3` `~1.2` `~1` Allows patch-level changes if a minor version is specified on the comparator. Allows minor-level changes if not. * `~1.2.3` := `>=1.2.3 <1.(2+1).0` := `>=1.2.3 <1.3.0` * `~1.2` := `>=1.2.0 <1.(2+1).0` := `>=1.2.0 <1.3.0` (Same as `1.2.x`) * `~1` := `>=1.0.0 <(1+1).0.0` := `>=1.0.0 <2.0.0` (Same as `1.x`) * `~0.2.3` := `>=0.2.3 <0.(2+1).0` := `>=0.2.3 <0.3.0` * `~0.2` := `>=0.2.0 <0.(2+1).0` := `>=0.2.0 <0.3.0` (Same as `0.2.x`) * `~0` := `>=0.0.0 <(0+1).0.0` := `>=0.0.0 <1.0.0` (Same as `0.x`) * `~1.2.3-beta.2` := `>=1.2.3-beta.2 <1.3.0` Note that prereleases in the `1.2.3` version will be allowed, if they are greater than or equal to `beta.2`. So, `1.2.3-beta.4` would be allowed, but `1.2.4-beta.2` would not, because it is a prerelease of a different `[major, minor, patch]` tuple. #### Caret Ranges `^1.2.3` `^0.2.5` `^0.0.4` Allows changes that do not modify the left-most non-zero element in the `[major, minor, patch]` tuple. In other words, this allows patch and minor updates for versions `1.0.0` and above, patch updates for versions `0.X >=0.1.0`, and *no* updates for versions `0.0.X`. Many authors treat a `0.x` version as if the `x` were the major "breaking-change" indicator. Caret ranges are ideal when an author may make breaking changes between `0.2.4` and `0.3.0` releases, which is a common practice. However, it presumes that there will *not* be breaking changes between `0.2.4` and `0.2.5`. It allows for changes that are presumed to be additive (but non-breaking), according to commonly observed practices. * `^1.2.3` := `>=1.2.3 <2.0.0` * `^0.2.3` := `>=0.2.3 <0.3.0` * `^0.0.3` := `>=0.0.3 <0.0.4` * `^1.2.3-beta.2` := `>=1.2.3-beta.2 <2.0.0` Note that prereleases in the `1.2.3` version will be allowed, if they are greater than or equal to `beta.2`. So, `1.2.3-beta.4` would be allowed, but `1.2.4-beta.2` would not, because it is a prerelease of a different `[major, minor, patch]` tuple. * `^0.0.3-beta` := `>=0.0.3-beta <0.0.4` Note that prereleases in the `0.0.3` version *only* will be allowed, if they are greater than or equal to `beta`. So, `0.0.3-pr.2` would be allowed. When parsing caret ranges, a missing `patch` value desugars to the number `0`, but will allow flexibility within that value, even if the major and minor versions are both `0`. * `^1.2.x` := `>=1.2.0 <2.0.0` * `^0.0.x` := `>=0.0.0 <0.1.0` * `^0.0` := `>=0.0.0 <0.1.0` A missing `minor` and `patch` values will desugar to zero, but also allow flexibility within those values, even if the major version is zero. * `^1.x` := `>=1.0.0 <2.0.0` * `^0.x` := `>=0.0.0 <1.0.0` ### Range Grammar Putting all this together, here is a Backus-Naur grammar for ranges, for the benefit of parser authors: ```bnf range-set ::= range ( logical-or range ) * logical-or ::= ( ' ' ) * '||' ( ' ' ) * range ::= hyphen | simple ( ' ' simple ) * | '' hyphen ::= partial ' - ' partial simple ::= primitive | partial | tilde | caret primitive ::= ( '<' | '>' | '>=' | '<=' | '=' ) partial partial ::= xr ( '.' xr ( '.' xr qualifier ? )? )? xr ::= 'x' | 'X' | '*' | nr nr ::= '0' | ['1'-'9'] ( ['0'-'9'] ) * tilde ::= '~' partial caret ::= '^' partial qualifier ::= ( '-' pre )? ( '+' build )? pre ::= parts build ::= parts parts ::= part ( '.' part ) * part ::= nr | [-0-9A-Za-z]+ ``` ## Functions All methods and classes take a final `options` object argument. All options in this object are `false` by default. The options supported are: - `loose` Be more forgiving about not-quite-valid semver strings. (Any resulting output will always be 100% strict compliant, of course.) For backwards compatibility reasons, if the `options` argument is a boolean value instead of an object, it is interpreted to be the `loose` param. - `includePrerelease` Set to suppress the [default behavior](https://github.com/npm/node-semver#prerelease-tags) of excluding prerelease tagged versions from ranges unless they are explicitly opted into. Strict-mode Comparators and Ranges will be strict about the SemVer strings that they parse. * `valid(v)`: Return the parsed version, or null if it's not valid. * `inc(v, release)`: Return the version incremented by the release type (`major`, `premajor`, `minor`, `preminor`, `patch`, `prepatch`, or `prerelease`), or null if it's not valid * `premajor` in one call will bump the version up to the next major version and down to a prerelease of that major version. `preminor`, and `prepatch` work the same way. * If called from a non-prerelease version, the `prerelease` will work the same as `prepatch`. It increments the patch version, then makes a prerelease. If the input version is already a prerelease it simply increments it. * `prerelease(v)`: Returns an array of prerelease components, or null if none exist. Example: `prerelease('1.2.3-alpha.1') -> ['alpha', 1]` * `major(v)`: Return the major version number. * `minor(v)`: Return the minor version number. * `patch(v)`: Return the patch version number. * `intersects(r1, r2, loose)`: Return true if the two supplied ranges or comparators intersect. * `parse(v)`: Attempt to parse a string as a semantic version, returning either a `SemVer` object or `null`. ### Comparison * `gt(v1, v2)`: `v1 > v2` * `gte(v1, v2)`: `v1 >= v2` * `lt(v1, v2)`: `v1 < v2` * `lte(v1, v2)`: `v1 <= v2` * `eq(v1, v2)`: `v1 == v2` This is true if they're logically equivalent, even if they're not the exact same string. You already know how to compare strings. * `neq(v1, v2)`: `v1 != v2` The opposite of `eq`. * `cmp(v1, comparator, v2)`: Pass in a comparison string, and it'll call the corresponding function above. `"==="` and `"!=="` do simple string comparison, but are included for completeness. Throws if an invalid comparison string is provided. * `compare(v1, v2)`: Return `0` if `v1 == v2`, or `1` if `v1` is greater, or `-1` if `v2` is greater. Sorts in ascending order if passed to `Array.sort()`. * `rcompare(v1, v2)`: The reverse of compare. Sorts an array of versions in descending order when passed to `Array.sort()`. * `compareBuild(v1, v2)`: The same as `compare` but considers `build` when two versions are equal. Sorts in ascending order if passed to `Array.sort()`. `v2` is greater. Sorts in ascending order if passed to `Array.sort()`. * `diff(v1, v2)`: Returns difference between two versions by the release type (`major`, `premajor`, `minor`, `preminor`, `patch`, `prepatch`, or `prerelease`), or null if the versions are the same. ### Comparators * `intersects(comparator)`: Return true if the comparators intersect ### Ranges * `validRange(range)`: Return the valid range or null if it's not valid * `satisfies(version, range)`: Return true if the version satisfies the range. * `maxSatisfying(versions, range)`: Return the highest version in the list that satisfies the range, or `null` if none of them do. * `minSatisfying(versions, range)`: Return the lowest version in the list that satisfies the range, or `null` if none of them do. * `minVersion(range)`: Return the lowest version that can possibly match the given range. * `gtr(version, range)`: Return `true` if version is greater than all the versions possible in the range. * `ltr(version, range)`: Return `true` if version is less than all the versions possible in the range. * `outside(version, range, hilo)`: Return true if the version is outside the bounds of the range in either the high or low direction. The `hilo` argument must be either the string `'>'` or `'<'`. (This is the function called by `gtr` and `ltr`.) * `intersects(range)`: Return true if any of the ranges comparators intersect Note that, since ranges may be non-contiguous, a version might not be greater than a range, less than a range, *or* satisfy a range! For example, the range `1.2 <1.2.9 || >2.0.0` would have a hole from `1.2.9` until `2.0.0`, so the version `1.2.10` would not be greater than the range (because `2.0.1` satisfies, which is higher), nor less than the range (since `1.2.8` satisfies, which is lower), and it also does not satisfy the range. If you want to know if a version satisfies or does not satisfy a range, use the `satisfies(version, range)` function. ### Coercion * `coerce(version, options)`: Coerces a string to semver if possible This aims to provide a very forgiving translation of a non-semver string to semver. It looks for the first digit in a string, and consumes all remaining characters which satisfy at least a partial semver (e.g., `1`, `1.2`, `1.2.3`) up to the max permitted length (256 characters). Longer versions are simply truncated (`4.6.3.9.2-alpha2` becomes `4.6.3`). All surrounding text is simply ignored (`v3.4 replaces v3.3.1` becomes `3.4.0`). Only text which lacks digits will fail coercion (`version one` is not valid). The maximum length for any semver component considered for coercion is 16 characters; longer components will be ignored (`10000000000000000.4.7.4` becomes `4.7.4`). The maximum value for any semver component is `Integer.MAX_SAFE_INTEGER || (2**53 - 1)`; higher value components are invalid (`9999999999999999.4.7.4` is likely invalid). If the `options.rtl` flag is set, then `coerce` will return the right-most coercible tuple that does not share an ending index with a longer coercible tuple. For example, `1.2.3.4` will return `2.3.4` in rtl mode, not `4.0.0`. `1.2.3/4` will return `4.0.0`, because the `4` is not a part of any other overlapping SemVer tuple. ### Clean * `clean(version)`: Clean a string to be a valid semver if possible This will return a cleaned and trimmed semver version. If the provided version is not valid a null will be returned. This does not work for ranges. ex. * `s.clean(' = v 2.1.5foo')`: `null` * `s.clean(' = v 2.1.5foo', { loose: true })`: `'2.1.5-foo'` * `s.clean(' = v 2.1.5-foo')`: `null` * `s.clean(' = v 2.1.5-foo', { loose: true })`: `'2.1.5-foo'` * `s.clean('=v2.1.5')`: `'2.1.5'` * `s.clean(' =v2.1.5')`: `2.1.5` * `s.clean(' 2.1.5 ')`: `'2.1.5'` * `s.clean('~1.0.0')`: `null` # Console Control Strings A library of cross-platform tested terminal/console command strings for doing things like color and cursor positioning. This is a subset of both ansi and vt100. All control codes included work on both Windows & Unix-like OSes, except where noted. ## Usage ```js var consoleControl = require('console-control-strings') console.log(consoleControl.color('blue','bgRed', 'bold') + 'hi there' + consoleControl.color('reset')) process.stdout.write(consoleControl.goto(75, 10)) ``` ## Why Another? There are tons of libraries similar to this one. I wanted one that was: 1. Very clear about compatibility goals. 2. Could emit, for instance, a start color code without an end one. 3. Returned strings w/o writing to streams. 4. Was not weighed down with other unrelated baggage. ## Functions ### var code = consoleControl.up(_num = 1_) Returns the escape sequence to move _num_ lines up. ### var code = consoleControl.down(_num = 1_) Returns the escape sequence to move _num_ lines down. ### var code = consoleControl.forward(_num = 1_) Returns the escape sequence to move _num_ lines righ. ### var code = consoleControl.back(_num = 1_) Returns the escape sequence to move _num_ lines left. ### var code = consoleControl.nextLine(_num = 1_) Returns the escape sequence to move _num_ lines down and to the beginning of the line. ### var code = consoleControl.previousLine(_num = 1_) Returns the escape sequence to move _num_ lines up and to the beginning of the line. ### var code = consoleControl.eraseData() Returns the escape sequence to erase everything from the current cursor position to the bottom right of the screen. This is line based, so it erases the remainder of the current line and all following lines. ### var code = consoleControl.eraseLine() Returns the escape sequence to erase to the end of the current line. ### var code = consoleControl.goto(_x_, _y_) Returns the escape sequence to move the cursor to the designated position. Note that the origin is _1, 1_ not _0, 0_. ### var code = consoleControl.gotoSOL() Returns the escape sequence to move the cursor to the beginning of the current line. (That is, it returns a carriage return, `\r`.) ### var code = consoleControl.beep() Returns the escape sequence to cause the termianl to beep. (That is, it returns unicode character `\x0007`, a Control-G.) ### var code = consoleControl.hideCursor() Returns the escape sequence to hide the cursor. ### var code = consoleControl.showCursor() Returns the escape sequence to show the cursor. ### var code = consoleControl.color(_colors = []_) ### var code = consoleControl.color(_color1_, _color2_, _…_, _colorn_) Returns the escape sequence to set the current terminal display attributes (mostly colors). Arguments can either be a list of attributes or an array of attributes. The difference between passing in an array or list of colors and calling `.color` separately for each one, is that in the former case a single escape sequence will be produced where as in the latter each change will have its own distinct escape sequence. Each attribute can be one of: * Reset: * **reset** – Reset all attributes to the terminal default. * Styles: * **bold** – Display text as bold. In some terminals this means using a bold font, in others this means changing the color. In some it means both. * **italic** – Display text as italic. This is not available in most Windows terminals. * **underline** – Underline text. This is not available in most Windows Terminals. * **inverse** – Invert the foreground and background colors. * **stopBold** – Do not display text as bold. * **stopItalic** – Do not display text as italic. * **stopUnderline** – Do not underline text. * **stopInverse** – Do not invert foreground and background. * Colors: * **white** * **black** * **blue** * **cyan** * **green** * **magenta** * **red** * **yellow** * **grey** / **brightBlack** * **brightRed** * **brightGreen** * **brightYellow** * **brightBlue** * **brightMagenta** * **brightCyan** * **brightWhite** * Background Colors: * **bgWhite** * **bgBlack** * **bgBlue** * **bgCyan** * **bgGreen** * **bgMagenta** * **bgRed** * **bgYellow** * **bgGrey** / **bgBrightBlack** * **bgBrightRed** * **bgBrightGreen** * **bgBrightYellow** * **bgBrightBlue** * **bgBrightMagenta** * **bgBrightCyan** * **bgBrightWhite** semver(1) -- The semantic versioner for npm =========================================== ## Install ```bash npm install --save semver ```` ## Usage As a node module: ```js const semver = require('semver') semver.valid('1.2.3') // '1.2.3' semver.valid('a.b.c') // null semver.clean(' =v1.2.3 ') // '1.2.3' semver.satisfies('1.2.3', '1.x || >=2.5.0 || 5.0.0 - 7.2.3') // true semver.gt('1.2.3', '9.8.7') // false semver.lt('1.2.3', '9.8.7') // true semver.minVersion('>=1.0.0') // '1.0.0' semver.valid(semver.coerce('v2')) // '2.0.0' semver.valid(semver.coerce('42.6.7.9.3-alpha')) // '42.6.7' ``` As a command-line utility: ``` $ semver -h A JavaScript implementation of the https://semver.org/ specification Copyright Isaac Z. Schlueter Usage: semver [options] <version> [<version> [...]] Prints valid versions sorted by SemVer precedence Options: -r --range <range> Print versions that match the specified range. -i --increment [<level>] Increment a version by the specified level. Level can be one of: major, minor, patch, premajor, preminor, prepatch, or prerelease. Default level is 'patch'. Only one version may be specified. --preid <identifier> Identifier to be used to prefix premajor, preminor, prepatch or prerelease version increments. -l --loose Interpret versions and ranges loosely -p --include-prerelease Always include prerelease versions in range matching -c --coerce Coerce a string into SemVer if possible (does not imply --loose) Program exits successfully if any valid version satisfies all supplied ranges, and prints all satisfying versions. If no satisfying versions are found, then exits failure. Versions are printed in ascending order, so supplying multiple versions to the utility will just sort them. ``` ## Versions A "version" is described by the `v2.0.0` specification found at <https://semver.org/>. A leading `"="` or `"v"` character is stripped off and ignored. ## Ranges A `version range` is a set of `comparators` which specify versions that satisfy the range. A `comparator` is composed of an `operator` and a `version`. The set of primitive `operators` is: * `<` Less than * `<=` Less than or equal to * `>` Greater than * `>=` Greater than or equal to * `=` Equal. If no operator is specified, then equality is assumed, so this operator is optional, but MAY be included. For example, the comparator `>=1.2.7` would match the versions `1.2.7`, `1.2.8`, `2.5.3`, and `1.3.9`, but not the versions `1.2.6` or `1.1.0`. Comparators can be joined by whitespace to form a `comparator set`, which is satisfied by the **intersection** of all of the comparators it includes. A range is composed of one or more comparator sets, joined by `||`. A version matches a range if and only if every comparator in at least one of the `||`-separated comparator sets is satisfied by the version. For example, the range `>=1.2.7 <1.3.0` would match the versions `1.2.7`, `1.2.8`, and `1.2.99`, but not the versions `1.2.6`, `1.3.0`, or `1.1.0`. The range `1.2.7 || >=1.2.9 <2.0.0` would match the versions `1.2.7`, `1.2.9`, and `1.4.6`, but not the versions `1.2.8` or `2.0.0`. ### Prerelease Tags If a version has a prerelease tag (for example, `1.2.3-alpha.3`) then it will only be allowed to satisfy comparator sets if at least one comparator with the same `[major, minor, patch]` tuple also has a prerelease tag. For example, the range `>1.2.3-alpha.3` would be allowed to match the version `1.2.3-alpha.7`, but it would *not* be satisfied by `3.4.5-alpha.9`, even though `3.4.5-alpha.9` is technically "greater than" `1.2.3-alpha.3` according to the SemVer sort rules. The version range only accepts prerelease tags on the `1.2.3` version. The version `3.4.5` *would* satisfy the range, because it does not have a prerelease flag, and `3.4.5` is greater than `1.2.3-alpha.7`. The purpose for this behavior is twofold. First, prerelease versions frequently are updated very quickly, and contain many breaking changes that are (by the author's design) not yet fit for public consumption. Therefore, by default, they are excluded from range matching semantics. Second, a user who has opted into using a prerelease version has clearly indicated the intent to use *that specific* set of alpha/beta/rc versions. By including a prerelease tag in the range, the user is indicating that they are aware of the risk. However, it is still not appropriate to assume that they have opted into taking a similar risk on the *next* set of prerelease versions. Note that this behavior can be suppressed (treating all prerelease versions as if they were normal versions, for the purpose of range matching) by setting the `includePrerelease` flag on the options object to any [functions](https://github.com/npm/node-semver#functions) that do range matching. #### Prerelease Identifiers The method `.inc` takes an additional `identifier` string argument that will append the value of the string as a prerelease identifier: ```javascript semver.inc('1.2.3', 'prerelease', 'beta') // '1.2.4-beta.0' ``` command-line example: ```bash $ semver 1.2.3 -i prerelease --preid beta 1.2.4-beta.0 ``` Which then can be used to increment further: ```bash $ semver 1.2.4-beta.0 -i prerelease 1.2.4-beta.1 ``` ### Advanced Range Syntax Advanced range syntax desugars to primitive comparators in deterministic ways. Advanced ranges may be combined in the same way as primitive comparators using white space or `||`. #### Hyphen Ranges `X.Y.Z - A.B.C` Specifies an inclusive set. * `1.2.3 - 2.3.4` := `>=1.2.3 <=2.3.4` If a partial version is provided as the first version in the inclusive range, then the missing pieces are replaced with zeroes. * `1.2 - 2.3.4` := `>=1.2.0 <=2.3.4` If a partial version is provided as the second version in the inclusive range, then all versions that start with the supplied parts of the tuple are accepted, but nothing that would be greater than the provided tuple parts. * `1.2.3 - 2.3` := `>=1.2.3 <2.4.0` * `1.2.3 - 2` := `>=1.2.3 <3.0.0` #### X-Ranges `1.2.x` `1.X` `1.2.*` `*` Any of `X`, `x`, or `*` may be used to "stand in" for one of the numeric values in the `[major, minor, patch]` tuple. * `*` := `>=0.0.0` (Any version satisfies) * `1.x` := `>=1.0.0 <2.0.0` (Matching major version) * `1.2.x` := `>=1.2.0 <1.3.0` (Matching major and minor versions) A partial version range is treated as an X-Range, so the special character is in fact optional. * `""` (empty string) := `*` := `>=0.0.0` * `1` := `1.x.x` := `>=1.0.0 <2.0.0` * `1.2` := `1.2.x` := `>=1.2.0 <1.3.0` #### Tilde Ranges `~1.2.3` `~1.2` `~1` Allows patch-level changes if a minor version is specified on the comparator. Allows minor-level changes if not. * `~1.2.3` := `>=1.2.3 <1.(2+1).0` := `>=1.2.3 <1.3.0` * `~1.2` := `>=1.2.0 <1.(2+1).0` := `>=1.2.0 <1.3.0` (Same as `1.2.x`) * `~1` := `>=1.0.0 <(1+1).0.0` := `>=1.0.0 <2.0.0` (Same as `1.x`) * `~0.2.3` := `>=0.2.3 <0.(2+1).0` := `>=0.2.3 <0.3.0` * `~0.2` := `>=0.2.0 <0.(2+1).0` := `>=0.2.0 <0.3.0` (Same as `0.2.x`) * `~0` := `>=0.0.0 <(0+1).0.0` := `>=0.0.0 <1.0.0` (Same as `0.x`) * `~1.2.3-beta.2` := `>=1.2.3-beta.2 <1.3.0` Note that prereleases in the `1.2.3` version will be allowed, if they are greater than or equal to `beta.2`. So, `1.2.3-beta.4` would be allowed, but `1.2.4-beta.2` would not, because it is a prerelease of a different `[major, minor, patch]` tuple. #### Caret Ranges `^1.2.3` `^0.2.5` `^0.0.4` Allows changes that do not modify the left-most non-zero digit in the `[major, minor, patch]` tuple. In other words, this allows patch and minor updates for versions `1.0.0` and above, patch updates for versions `0.X >=0.1.0`, and *no* updates for versions `0.0.X`. Many authors treat a `0.x` version as if the `x` were the major "breaking-change" indicator. Caret ranges are ideal when an author may make breaking changes between `0.2.4` and `0.3.0` releases, which is a common practice. However, it presumes that there will *not* be breaking changes between `0.2.4` and `0.2.5`. It allows for changes that are presumed to be additive (but non-breaking), according to commonly observed practices. * `^1.2.3` := `>=1.2.3 <2.0.0` * `^0.2.3` := `>=0.2.3 <0.3.0` * `^0.0.3` := `>=0.0.3 <0.0.4` * `^1.2.3-beta.2` := `>=1.2.3-beta.2 <2.0.0` Note that prereleases in the `1.2.3` version will be allowed, if they are greater than or equal to `beta.2`. So, `1.2.3-beta.4` would be allowed, but `1.2.4-beta.2` would not, because it is a prerelease of a different `[major, minor, patch]` tuple. * `^0.0.3-beta` := `>=0.0.3-beta <0.0.4` Note that prereleases in the `0.0.3` version *only* will be allowed, if they are greater than or equal to `beta`. So, `0.0.3-pr.2` would be allowed. When parsing caret ranges, a missing `patch` value desugars to the number `0`, but will allow flexibility within that value, even if the major and minor versions are both `0`. * `^1.2.x` := `>=1.2.0 <2.0.0` * `^0.0.x` := `>=0.0.0 <0.1.0` * `^0.0` := `>=0.0.0 <0.1.0` A missing `minor` and `patch` values will desugar to zero, but also allow flexibility within those values, even if the major version is zero. * `^1.x` := `>=1.0.0 <2.0.0` * `^0.x` := `>=0.0.0 <1.0.0` ### Range Grammar Putting all this together, here is a Backus-Naur grammar for ranges, for the benefit of parser authors: ```bnf range-set ::= range ( logical-or range ) * logical-or ::= ( ' ' ) * '||' ( ' ' ) * range ::= hyphen | simple ( ' ' simple ) * | '' hyphen ::= partial ' - ' partial simple ::= primitive | partial | tilde | caret primitive ::= ( '<' | '>' | '>=' | '<=' | '=' ) partial partial ::= xr ( '.' xr ( '.' xr qualifier ? )? )? xr ::= 'x' | 'X' | '*' | nr nr ::= '0' | ['1'-'9'] ( ['0'-'9'] ) * tilde ::= '~' partial caret ::= '^' partial qualifier ::= ( '-' pre )? ( '+' build )? pre ::= parts build ::= parts parts ::= part ( '.' part ) * part ::= nr | [-0-9A-Za-z]+ ``` ## Functions All methods and classes take a final `options` object argument. All options in this object are `false` by default. The options supported are: - `loose` Be more forgiving about not-quite-valid semver strings. (Any resulting output will always be 100% strict compliant, of course.) For backwards compatibility reasons, if the `options` argument is a boolean value instead of an object, it is interpreted to be the `loose` param. - `includePrerelease` Set to suppress the [default behavior](https://github.com/npm/node-semver#prerelease-tags) of excluding prerelease tagged versions from ranges unless they are explicitly opted into. Strict-mode Comparators and Ranges will be strict about the SemVer strings that they parse. * `valid(v)`: Return the parsed version, or null if it's not valid. * `inc(v, release)`: Return the version incremented by the release type (`major`, `premajor`, `minor`, `preminor`, `patch`, `prepatch`, or `prerelease`), or null if it's not valid * `premajor` in one call will bump the version up to the next major version and down to a prerelease of that major version. `preminor`, and `prepatch` work the same way. * If called from a non-prerelease version, the `prerelease` will work the same as `prepatch`. It increments the patch version, then makes a prerelease. If the input version is already a prerelease it simply increments it. * `prerelease(v)`: Returns an array of prerelease components, or null if none exist. Example: `prerelease('1.2.3-alpha.1') -> ['alpha', 1]` * `major(v)`: Return the major version number. * `minor(v)`: Return the minor version number. * `patch(v)`: Return the patch version number. * `intersects(r1, r2, loose)`: Return true if the two supplied ranges or comparators intersect. * `parse(v)`: Attempt to parse a string as a semantic version, returning either a `SemVer` object or `null`. ### Comparison * `gt(v1, v2)`: `v1 > v2` * `gte(v1, v2)`: `v1 >= v2` * `lt(v1, v2)`: `v1 < v2` * `lte(v1, v2)`: `v1 <= v2` * `eq(v1, v2)`: `v1 == v2` This is true if they're logically equivalent, even if they're not the exact same string. You already know how to compare strings. * `neq(v1, v2)`: `v1 != v2` The opposite of `eq`. * `cmp(v1, comparator, v2)`: Pass in a comparison string, and it'll call the corresponding function above. `"==="` and `"!=="` do simple string comparison, but are included for completeness. Throws if an invalid comparison string is provided. * `compare(v1, v2)`: Return `0` if `v1 == v2`, or `1` if `v1` is greater, or `-1` if `v2` is greater. Sorts in ascending order if passed to `Array.sort()`. * `rcompare(v1, v2)`: The reverse of compare. Sorts an array of versions in descending order when passed to `Array.sort()`. * `diff(v1, v2)`: Returns difference between two versions by the release type (`major`, `premajor`, `minor`, `preminor`, `patch`, `prepatch`, or `prerelease`), or null if the versions are the same. ### Comparators * `intersects(comparator)`: Return true if the comparators intersect ### Ranges * `validRange(range)`: Return the valid range or null if it's not valid * `satisfies(version, range)`: Return true if the version satisfies the range. * `maxSatisfying(versions, range)`: Return the highest version in the list that satisfies the range, or `null` if none of them do. * `minSatisfying(versions, range)`: Return the lowest version in the list that satisfies the range, or `null` if none of them do. * `minVersion(range)`: Return the lowest version that can possibly match the given range. * `gtr(version, range)`: Return `true` if version is greater than all the versions possible in the range. * `ltr(version, range)`: Return `true` if version is less than all the versions possible in the range. * `outside(version, range, hilo)`: Return true if the version is outside the bounds of the range in either the high or low direction. The `hilo` argument must be either the string `'>'` or `'<'`. (This is the function called by `gtr` and `ltr`.) * `intersects(range)`: Return true if any of the ranges comparators intersect Note that, since ranges may be non-contiguous, a version might not be greater than a range, less than a range, *or* satisfy a range! For example, the range `1.2 <1.2.9 || >2.0.0` would have a hole from `1.2.9` until `2.0.0`, so the version `1.2.10` would not be greater than the range (because `2.0.1` satisfies, which is higher), nor less than the range (since `1.2.8` satisfies, which is lower), and it also does not satisfy the range. If you want to know if a version satisfies or does not satisfy a range, use the `satisfies(version, range)` function. ### Coercion * `coerce(version)`: Coerces a string to semver if possible This aims to provide a very forgiving translation of a non-semver string to semver. It looks for the first digit in a string, and consumes all remaining characters which satisfy at least a partial semver (e.g., `1`, `1.2`, `1.2.3`) up to the max permitted length (256 characters). Longer versions are simply truncated (`4.6.3.9.2-alpha2` becomes `4.6.3`). All surrounding text is simply ignored (`v3.4 replaces v3.3.1` becomes `3.4.0`). Only text which lacks digits will fail coercion (`version one` is not valid). The maximum length for any semver component considered for coercion is 16 characters; longer components will be ignored (`10000000000000000.4.7.4` becomes `4.7.4`). The maximum value for any semver component is `Number.MAX_SAFE_INTEGER || (2**53 - 1)`; higher value components are invalid (`9999999999999999.4.7.4` is likely invalid). # graceful-fs graceful-fs functions as a drop-in replacement for the fs module, making various improvements. The improvements are meant to normalize behavior across different platforms and environments, and to make filesystem access more resilient to errors. ## Improvements over [fs module](https://nodejs.org/api/fs.html) * Queues up `open` and `readdir` calls, and retries them once something closes if there is an EMFILE error from too many file descriptors. * fixes `lchmod` for Node versions prior to 0.6.2. * implements `fs.lutimes` if possible. Otherwise it becomes a noop. * ignores `EINVAL` and `EPERM` errors in `chown`, `fchown` or `lchown` if the user isn't root. * makes `lchmod` and `lchown` become noops, if not available. * retries reading a file if `read` results in EAGAIN error. On Windows, it retries renaming a file for up to one second if `EACCESS` or `EPERM` error occurs, likely because antivirus software has locked the directory. ## USAGE ```javascript // use just like fs var fs = require('graceful-fs') // now go and do stuff with it... fs.readFile('some-file-or-whatever', (err, data) => { // Do stuff here. }) ``` ## Sync methods This module cannot intercept or handle `EMFILE` or `ENFILE` errors from sync methods. If you use sync methods which open file descriptors then you are responsible for dealing with any errors. This is a known limitation, not a bug. ## Global Patching If you want to patch the global fs module (or any other fs-like module) you can do this: ```javascript // Make sure to read the caveat below. var realFs = require('fs') var gracefulFs = require('graceful-fs') gracefulFs.gracefulify(realFs) ``` This should only ever be done at the top-level application layer, in order to delay on EMFILE errors from any fs-using dependencies. You should **not** do this in a library, because it can cause unexpected delays in other parts of the program. ## Changes This module is fairly stable at this point, and used by a lot of things. That being said, because it implements a subtle behavior change in a core part of the node API, even modest changes can be extremely breaking, and the versioning is thus biased towards bumping the major when in doubt. The main change between major versions has been switching between providing a fully-patched `fs` module vs monkey-patching the node core builtin, and the approach by which a non-monkey-patched `fs` was created. The goal is to trade `EMFILE` errors for slower fs operations. So, if you try to open a zillion files, rather than crashing, `open` operations will be queued up and wait for something else to `close`. There are advantages to each approach. Monkey-patching the fs means that no `EMFILE` errors can possibly occur anywhere in your application, because everything is using the same core `fs` module, which is patched. However, it can also obviously cause undesirable side-effects, especially if the module is loaded multiple times. Implementing a separate-but-identical patched `fs` module is more surgical (and doesn't run the risk of patching multiple times), but also imposes the challenge of keeping in sync with the core module. The current approach loads the `fs` module, and then creates a lookalike object that has all the same methods, except a few that are patched. It is safe to use in all versions of Node from 0.8 through 7.0. ### v4 * Do not monkey-patch the fs module. This module may now be used as a drop-in dep, and users can opt into monkey-patching the fs builtin if their app requires it. ### v3 * Monkey-patch fs, because the eval approach no longer works on recent node. * fixed possible type-error throw if rename fails on windows * verify that we *never* get EMFILE errors * Ignore ENOSYS from chmod/chown * clarify that graceful-fs must be used as a drop-in ### v2.1.0 * Use eval rather than monkey-patching fs. * readdir: Always sort the results * win32: requeue a file if error has an OK status ### v2.0 * A return to monkey patching * wrap process.cwd ### v1.1 * wrap readFile * Wrap fs.writeFile. * readdir protection * Don't clobber the fs builtin * Handle fs.read EAGAIN errors by trying again * Expose the curOpen counter * No-op lchown/lchmod if not implemented * fs.rename patch only for win32 * Patch fs.rename to handle AV software on Windows * Close #4 Chown should not fail on einval or eperm if non-root * Fix isaacs/fstream#1 Only wrap fs one time * Fix #3 Start at 1024 max files, then back off on EMFILE * lutimes that doens't blow up on Linux * A full on-rewrite using a queue instead of just swallowing the EMFILE error * Wrap Read/Write streams as well ### 1.0 * Update engines for node 0.6 * Be lstat-graceful on Windows * first # toidentifier [![NPM Version][npm-image]][npm-url] [![NPM Downloads][downloads-image]][downloads-url] [![Build Status][github-actions-ci-image]][github-actions-ci-url] [![Test Coverage][codecov-image]][codecov-url] > Convert a string of words to a JavaScript identifier ## Install This is a [Node.js](https://nodejs.org/en/) module available through the [npm registry](https://www.npmjs.com/). Installation is done using the [`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally): ```bash $ npm install toidentifier ``` ## Example ```js var toIdentifier = require('toidentifier') console.log(toIdentifier('Bad Request')) // => "BadRequest" ``` ## API This CommonJS module exports a single default function: `toIdentifier`. ### toIdentifier(string) Given a string as the argument, it will be transformed according to the following rules and the new string will be returned: 1. Split into words separated by space characters (`0x20`). 2. Upper case the first character of each word. 3. Join the words together with no separator. 4. Remove all non-word (`[0-9a-z_]`) characters. ## License [MIT](LICENSE) [codecov-image]: https://img.shields.io/codecov/c/github/component/toidentifier.svg [codecov-url]: https://codecov.io/gh/component/toidentifier [downloads-image]: https://img.shields.io/npm/dm/toidentifier.svg [downloads-url]: https://npmjs.org/package/toidentifier [github-actions-ci-image]: https://img.shields.io/github/workflow/status/component/toidentifier/ci/master?label=ci [github-actions-ci-url]: https://github.com/component/toidentifier?query=workflow%3Aci [npm-image]: https://img.shields.io/npm/v/toidentifier.svg [npm-url]: https://npmjs.org/package/toidentifier ## [npm]: https://www.npmjs.com/ [yarn]: https://yarnpkg.com/ [](https://travis-ci.org/#!/adaltas/node-csv-stringify) [](https://www.npmjs.com/package/csv-stringify) [](https://www.npmjs.com/package/csv-stringify) This package is a stringifier converting records into a CSV text and implementing the Node.js [`stream.Transform` API](https://nodejs.org/api/stream.html). It also provides the easier synchronous and callback-based APIs for conveniency. It is both extremely easy to use and powerful. It was first released in 2010 and is tested against big data sets by a large community. ## Documentation * [Project homepage](http://csv.js.org/stringify/) * [API](http://csv.js.org/stringify/api/) * [Options](http://csv.js.org/stringify/options/) * [Examples](http://csv.js.org/stringify/examples/) ## Main features * Follow the Node.js streaming API * Simplicity with the optional callback API * Support for custom formatters, delimiters, quotes, escape characters and header * Support big datasets * Complete test coverage and samples for inspiration * Only 1 external dependency * to be used conjointly with `csv-generate`, `csv-parse` and `stream-transform` * MIT License ## Usage The module is built on the Node.js Stream API. For the sake of simplicity, a simple callback API is also provided. To give you a quick look, here's an example of the callback API: ```javascript const stringify = require('csv-stringify') const assert = require('assert') // import stringify from 'csv-stringify' // import assert from 'assert/strict' const input = [ [ '1', '2', '3', '4' ], [ 'a', 'b', 'c', 'd' ] ] stringify(input, function(err, output) { const expected = '1,2,3,4\na,b,c,d\n' assert.strictEqual(output, expected, `output.should.eql ${expected}`) console.log("Passed.", output) }) ``` ## Development Tests are executed with mocha. To install it, run `npm install` followed by `npm test`. It will install mocha and its dependencies in your project "node_modules" directory and run the test suite. The tests run against the CoffeeScript source files. To generate the JavaScript files, run `npm run build`. The test suite is run online with [Travis](https://travis-ci.org/#!/adaltas/node-csv-stringify). See the [Travis definition file](https://github.com/adaltas/node-csv-stringify/blob/master/.travis.yml) to view the tested Node.js version. ## Contributors * David Worms: <https://github.com/wdavidw> [csv_home]: https://github.com/adaltas/node-csv [stream_transform]: http://nodejs.org/api/stream.html#stream_class_stream_transform [examples]: http://csv.js.org/stringify/examples/ [csv]: https://github.com/adaltas/node-csv # WebIDL Type Conversions on JavaScript Values This package implements, in JavaScript, the algorithms to convert a given JavaScript value according to a given [WebIDL](http://heycam.github.io/webidl/) [type](http://heycam.github.io/webidl/#idl-types). The goal is that you should be able to write code like ```js const conversions = require("webidl-conversions"); function doStuff(x, y) { x = conversions["boolean"](x); y = conversions["unsigned long"](y); // actual algorithm code here } ``` and your function `doStuff` will behave the same as a WebIDL operation declared as ```webidl void doStuff(boolean x, unsigned long y); ``` ## API This package's main module's default export is an object with a variety of methods, each corresponding to a different WebIDL type. Each method, when invoked on a JavaScript value, will give back the new JavaScript value that results after passing through the WebIDL conversion rules. (See below for more details on what that means.) Alternately, the method could throw an error, if the WebIDL algorithm is specified to do so: for example `conversions["float"](NaN)` [will throw a `TypeError`](http://heycam.github.io/webidl/#es-float). ## Status All of the numeric types are implemented (float being implemented as double) and some others are as well - check the source for all of them. This list will grow over time in service of the [HTML as Custom Elements](https://github.com/dglazkov/html-as-custom-elements) project, but in the meantime, pull requests welcome! I'm not sure yet what the strategy will be for modifiers, e.g. [`[Clamp]`](http://heycam.github.io/webidl/#Clamp). Maybe something like `conversions["unsigned long"](x, { clamp: true })`? We'll see. We might also want to extend the API to give better error messages, e.g. "Argument 1 of HTMLMediaElement.fastSeek is not a finite floating-point value" instead of "Argument is not a finite floating-point value." This would require passing in more information to the conversion functions than we currently do. ## Background What's actually going on here, conceptually, is pretty weird. Let's try to explain. WebIDL, as part of its madness-inducing design, has its own type system. When people write algorithms in web platform specs, they usually operate on WebIDL values, i.e. instances of WebIDL types. For example, if they were specifying the algorithm for our `doStuff` operation above, they would treat `x` as a WebIDL value of [WebIDL type `boolean`](http://heycam.github.io/webidl/#idl-boolean). Crucially, they would _not_ treat `x` as a JavaScript variable whose value is either the JavaScript `true` or `false`. They're instead working in a different type system altogether, with its own rules. Separately from its type system, WebIDL defines a ["binding"](http://heycam.github.io/webidl/#ecmascript-binding) of the type system into JavaScript. This contains rules like: when you pass a JavaScript value to the JavaScript method that manifests a given WebIDL operation, how does that get converted into a WebIDL value? For example, a JavaScript `true` passed in the position of a WebIDL `boolean` argument becomes a WebIDL `true`. But, a JavaScript `true` passed in the position of a [WebIDL `unsigned long`](http://heycam.github.io/webidl/#idl-unsigned-long) becomes a WebIDL `1`. And so on. Finally, we have the actual implementation code. This is usually C++, although these days [some smart people are using Rust](https://github.com/servo/servo). The implementation, of course, has its own type system. So when they implement the WebIDL algorithms, they don't actually use WebIDL values, since those aren't "real" outside of specs. Instead, implementations apply the WebIDL binding rules in such a way as to convert incoming JavaScript values into C++ values. For example, if code in the browser called `doStuff(true, true)`, then the implementation code would eventually receive a C++ `bool` containing `true` and a C++ `uint32_t` containing `1`. The upside of all this is that implementations can abstract all the conversion logic away, letting WebIDL handle it, and focus on implementing the relevant methods in C++ with values of the correct type already provided. That is payoff of WebIDL, in a nutshell. And getting to that payoff is the goal of _this_ project—but for JavaScript implementations, instead of C++ ones. That is, this library is designed to make it easier for JavaScript developers to write functions that behave like a given WebIDL operation. So conceptually, the conversion pipeline, which in its general form is JavaScript values ↦ WebIDL values ↦ implementation-language values, in this case becomes JavaScript values ↦ WebIDL values ↦ JavaScript values. And that intermediate step is where all the logic is performed: a JavaScript `true` becomes a WebIDL `1` in an unsigned long context, which then becomes a JavaScript `1`. ## Don't Use This Seriously, why would you ever use this? You really shouldn't. WebIDL is … not great, and you shouldn't be emulating its semantics. If you're looking for a generic argument-processing library, you should find one with better rules than those from WebIDL. In general, your JavaScript should not be trying to become more like WebIDL; if anything, we should fix WebIDL to make it more like JavaScript. The _only_ people who should use this are those trying to create faithful implementations (or polyfills) of web platform interfaces defined in WebIDL. # AssemblyScript Rtrace A tiny utility to sanitize the AssemblyScript runtime. Records allocations and frees performed by the runtime and emits an error if something is off. Also checks for leaks. Instructions ------------ Compile your module that uses the full or half runtime with `-use ASC_RTRACE=1 --explicitStart` and include an instance of this module as the import named `rtrace`. ```js const rtrace = new Rtrace({ onerror(err, info) { // handle error }, oninfo(msg) { // print message, optional }, getMemory() { // obtain the module's memory, // e.g. with --explicitStart: return instance.exports.memory; } }); const { module, instance } = await WebAssembly.instantiate(..., rtrace.install({ ...imports... }) ); instance.exports._start(); ... if (rtrace.active) { let leakCount = rtr.check(); if (leakCount) { // handle error } } ``` Note that references in globals which are not cleared before collection is performed appear as leaks, including their inner members. A TypedArray would leak itself and its backing ArrayBuffer in this case for example. This is perfectly normal and clearing all globals avoids this. ### Esrecurse [](https://travis-ci.org/estools/esrecurse) Esrecurse ([esrecurse](https://github.com/estools/esrecurse)) is [ECMAScript](https://www.ecma-international.org/publications/standards/Ecma-262.htm) recursive traversing functionality. ### Example Usage The following code will output all variables declared at the root of a file. ```javascript esrecurse.visit(ast, { XXXStatement: function (node) { this.visit(node.left); // do something... this.visit(node.right); } }); ``` We can use `Visitor` instance. ```javascript var visitor = new esrecurse.Visitor({ XXXStatement: function (node) { this.visit(node.left); // do something... this.visit(node.right); } }); visitor.visit(ast); ``` We can inherit `Visitor` instance easily. ```javascript class Derived extends esrecurse.Visitor { constructor() { super(null); } XXXStatement(node) { } } ``` ```javascript function DerivedVisitor() { esrecurse.Visitor.call(/* this for constructor */ this /* visitor object automatically becomes this. */); } util.inherits(DerivedVisitor, esrecurse.Visitor); DerivedVisitor.prototype.XXXStatement = function (node) { this.visit(node.left); // do something... this.visit(node.right); }; ``` And you can invoke default visiting operation inside custom visit operation. ```javascript function DerivedVisitor() { esrecurse.Visitor.call(/* this for constructor */ this /* visitor object automatically becomes this. */); } util.inherits(DerivedVisitor, esrecurse.Visitor); DerivedVisitor.prototype.XXXStatement = function (node) { // do something... this.visitChildren(node); }; ``` The `childVisitorKeys` option does customize the behaviour of `this.visitChildren(node)`. We can use user-defined node types. ```javascript // This tree contains a user-defined `TestExpression` node. var tree = { type: 'TestExpression', // This 'argument' is the property containing the other **node**. argument: { type: 'Literal', value: 20 }, // This 'extended' is the property not containing the other **node**. extended: true }; esrecurse.visit( ast, { Literal: function (node) { // do something... } }, { // Extending the existing traversing rules. childVisitorKeys: { // TargetNodeName: [ 'keys', 'containing', 'the', 'other', '**node**' ] TestExpression: ['argument'] } } ); ``` We can use the `fallback` option as well. If the `fallback` option is `"iteration"`, `esrecurse` would visit all enumerable properties of unknown nodes. Please note circular references cause the stack overflow. AST might have circular references in additional properties for some purpose (e.g. `node.parent`). ```javascript esrecurse.visit( ast, { Literal: function (node) { // do something... } }, { fallback: 'iteration' } ); ``` If the `fallback` option is a function, `esrecurse` calls this function to determine the enumerable properties of unknown nodes. Please note circular references cause the stack overflow. AST might have circular references in additional properties for some purpose (e.g. `node.parent`). ```javascript esrecurse.visit( ast, { Literal: function (node) { // do something... } }, { fallback: function (node) { return Object.keys(node).filter(function(key) { return key !== 'argument' }); } } ); ``` ### License Copyright (C) 2014 [Yusuke Suzuki](https://github.com/Constellation) (twitter: [@Constellation](https://twitter.com/Constellation)) and other contributors. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. [](https://www.npmjs.com/package/eslint) [](https://www.npmjs.com/package/eslint) [](https://github.com/eslint/eslint/actions) [](https://app.fossa.io/projects/git%2Bhttps%3A%2F%2Fgithub.com%2Feslint%2Feslint?ref=badge_shield) <br /> [](https://opencollective.com/eslint) [](https://opencollective.com/eslint) [](https://twitter.com/intent/user?screen_name=geteslint) # ESLint [Website](https://eslint.org) | [Configuring](https://eslint.org/docs/user-guide/configuring) | [Rules](https://eslint.org/docs/rules/) | [Contributing](https://eslint.org/docs/developer-guide/contributing) | [Reporting Bugs](https://eslint.org/docs/developer-guide/contributing/reporting-bugs) | [Code of Conduct](https://eslint.org/conduct) | [Twitter](https://twitter.com/geteslint) | [Mailing List](https://groups.google.com/group/eslint) | [Chat Room](https://eslint.org/chat) ESLint is a tool for identifying and reporting on patterns found in ECMAScript/JavaScript code. In many ways, it is similar to JSLint and JSHint with a few exceptions: * ESLint uses [Espree](https://github.com/eslint/espree) for JavaScript parsing. * ESLint uses an AST to evaluate patterns in code. * ESLint is completely pluggable, every single rule is a plugin and you can add more at runtime. ## Table of Contents 1. [Installation and Usage](#installation-and-usage) 2. [Configuration](#configuration) 3. [Code of Conduct](#code-of-conduct) 4. [Filing Issues](#filing-issues) 5. [Frequently Asked Questions](#faq) 6. [Releases](#releases) 7. [Security Policy](#security-policy) 8. [Semantic Versioning Policy](#semantic-versioning-policy) 9. [Stylistic Rule Updates](#stylistic-rule-updates) 10. [License](#license) 11. [Team](#team) 12. [Sponsors](#sponsors) 13. [Technology Sponsors](#technology-sponsors) ## <a name="installation-and-usage"></a>Installation and Usage Prerequisites: [Node.js](https://nodejs.org/) (`^10.12.0`, or `>=12.0.0`) built with SSL support. (If you are using an official Node.js distribution, SSL is always built in.) You can install ESLint using npm: ``` $ npm install eslint --save-dev ``` You should then set up a configuration file: ``` $ ./node_modules/.bin/eslint --init ``` After that, you can run ESLint on any file or directory like this: ``` $ ./node_modules/.bin/eslint yourfile.js ``` ## <a name="configuration"></a>Configuration After running `eslint --init`, you'll have a `.eslintrc` file in your directory. In it, you'll see some rules configured like this: ```json { "rules": { "semi": ["error", "always"], "quotes": ["error", "double"] } } ``` The names `"semi"` and `"quotes"` are the names of [rules](https://eslint.org/docs/rules) in ESLint. The first value is the error level of the rule and can be one of these values: * `"off"` or `0` - turn the rule off * `"warn"` or `1` - turn the rule on as a warning (doesn't affect exit code) * `"error"` or `2` - turn the rule on as an error (exit code will be 1) The three error levels allow you fine-grained control over how ESLint applies rules (for more configuration options and details, see the [configuration docs](https://eslint.org/docs/user-guide/configuring)). ## <a name="code-of-conduct"></a>Code of Conduct ESLint adheres to the [JS Foundation Code of Conduct](https://eslint.org/conduct). ## <a name="filing-issues"></a>Filing Issues Before filing an issue, please be sure to read the guidelines for what you're reporting: * [Bug Report](https://eslint.org/docs/developer-guide/contributing/reporting-bugs) * [Propose a New Rule](https://eslint.org/docs/developer-guide/contributing/new-rules) * [Proposing a Rule Change](https://eslint.org/docs/developer-guide/contributing/rule-changes) * [Request a Change](https://eslint.org/docs/developer-guide/contributing/changes) ## <a name="faq"></a>Frequently Asked Questions ### I'm using JSCS, should I migrate to ESLint? Yes. [JSCS has reached end of life](https://eslint.org/blog/2016/07/jscs-end-of-life) and is no longer supported. We have prepared a [migration guide](https://eslint.org/docs/user-guide/migrating-from-jscs) to help you convert your JSCS settings to an ESLint configuration. We are now at or near 100% compatibility with JSCS. If you try ESLint and believe we are not yet compatible with a JSCS rule/configuration, please create an issue (mentioning that it is a JSCS compatibility issue) and we will evaluate it as per our normal process. ### Does Prettier replace ESLint? No, ESLint does both traditional linting (looking for problematic patterns) and style checking (enforcement of conventions). You can use ESLint for everything, or you can combine both using Prettier to format your code and ESLint to catch possible errors. ### Why can't ESLint find my plugins? * Make sure your plugins (and ESLint) are both in your project's `package.json` as devDependencies (or dependencies, if your project uses ESLint at runtime). * Make sure you have run `npm install` and all your dependencies are installed. * Make sure your plugins' peerDependencies have been installed as well. You can use `npm view eslint-plugin-myplugin peerDependencies` to see what peer dependencies `eslint-plugin-myplugin` has. ### Does ESLint support JSX? Yes, ESLint natively supports parsing JSX syntax (this must be enabled in [configuration](https://eslint.org/docs/user-guide/configuring)). Please note that supporting JSX syntax *is not* the same as supporting React. React applies specific semantics to JSX syntax that ESLint doesn't recognize. We recommend using [eslint-plugin-react](https://www.npmjs.com/package/eslint-plugin-react) if you are using React and want React semantics. ### What ECMAScript versions does ESLint support? ESLint has full support for ECMAScript 3, 5 (default), 2015, 2016, 2017, 2018, 2019, and 2020. You can set your desired ECMAScript syntax (and other settings, like global variables or your target environments) through [configuration](https://eslint.org/docs/user-guide/configuring). ### What about experimental features? ESLint's parser only officially supports the latest final ECMAScript standard. We will make changes to core rules in order to avoid crashes on stage 3 ECMAScript syntax proposals (as long as they are implemented using the correct experimental ESTree syntax). We may make changes to core rules to better work with language extensions (such as JSX, Flow, and TypeScript) on a case-by-case basis. In other cases (including if rules need to warn on more or fewer cases due to new syntax, rather than just not crashing), we recommend you use other parsers and/or rule plugins. If you are using Babel, you can use the [babel-eslint](https://github.com/babel/babel-eslint) parser and [eslint-plugin-babel](https://github.com/babel/eslint-plugin-babel) to use any option available in Babel. Once a language feature has been adopted into the ECMAScript standard (stage 4 according to the [TC39 process](https://tc39.github.io/process-document/)), we will accept issues and pull requests related to the new feature, subject to our [contributing guidelines](https://eslint.org/docs/developer-guide/contributing). Until then, please use the appropriate parser and plugin(s) for your experimental feature. ### Where to ask for help? Join our [Mailing List](https://groups.google.com/group/eslint) or [Chatroom](https://eslint.org/chat). ### Why doesn't ESLint lock dependency versions? Lock files like `package-lock.json` are helpful for deployed applications. They ensure that dependencies are consistent between environments and across deployments. Packages like `eslint` that get published to the npm registry do not include lock files. `npm install eslint` as a user will respect version constraints in ESLint's `package.json`. ESLint and its dependencies will be included in the user's lock file if one exists, but ESLint's own lock file would not be used. We intentionally don't lock dependency versions so that we have the latest compatible dependency versions in development and CI that our users get when installing ESLint in a project. The Twilio blog has a [deeper dive](https://www.twilio.com/blog/lockfiles-nodejs) to learn more. ## <a name="releases"></a>Releases We have scheduled releases every two weeks on Friday or Saturday. You can follow a [release issue](https://github.com/eslint/eslint/issues?q=is%3Aopen+is%3Aissue+label%3Arelease) for updates about the scheduling of any particular release. ## <a name="security-policy"></a>Security Policy ESLint takes security seriously. We work hard to ensure that ESLint is safe for everyone and that security issues are addressed quickly and responsibly. Read the full [security policy](https://github.com/eslint/.github/blob/master/SECURITY.md). ## <a name="semantic-versioning-policy"></a>Semantic Versioning Policy ESLint follows [semantic versioning](https://semver.org). However, due to the nature of ESLint as a code quality tool, it's not always clear when a minor or major version bump occurs. To help clarify this for everyone, we've defined the following semantic versioning policy for ESLint: * Patch release (intended to not break your lint build) * A bug fix in a rule that results in ESLint reporting fewer linting errors. * A bug fix to the CLI or core (including formatters). * Improvements to documentation. * Non-user-facing changes such as refactoring code, adding, deleting, or modifying tests, and increasing test coverage. * Re-releasing after a failed release (i.e., publishing a release that doesn't work for anyone). * Minor release (might break your lint build) * A bug fix in a rule that results in ESLint reporting more linting errors. * A new rule is created. * A new option to an existing rule that does not result in ESLint reporting more linting errors by default. * A new addition to an existing rule to support a newly-added language feature (within the last 12 months) that will result in ESLint reporting more linting errors by default. * An existing rule is deprecated. * A new CLI capability is created. * New capabilities to the public API are added (new classes, new methods, new arguments to existing methods, etc.). * A new formatter is created. * `eslint:recommended` is updated and will result in strictly fewer linting errors (e.g., rule removals). * Major release (likely to break your lint build) * `eslint:recommended` is updated and may result in new linting errors (e.g., rule additions, most rule option updates). * A new option to an existing rule that results in ESLint reporting more linting errors by default. * An existing formatter is removed. * Part of the public API is removed or changed in an incompatible way. The public API includes: * Rule schemas * Configuration schema * Command-line options * Node.js API * Rule, formatter, parser, plugin APIs According to our policy, any minor update may report more linting errors than the previous release (ex: from a bug fix). As such, we recommend using the tilde (`~`) in `package.json` e.g. `"eslint": "~3.1.0"` to guarantee the results of your builds. ## <a name="stylistic-rule-updates"></a>Stylistic Rule Updates Stylistic rules are frozen according to [our policy](https://eslint.org/blog/2020/05/changes-to-rules-policies) on how we evaluate new rules and rule changes. This means: * **Bug fixes**: We will still fix bugs in stylistic rules. * **New ECMAScript features**: We will also make sure stylistic rules are compatible with new ECMAScript features. * **New options**: We will **not** add any new options to stylistic rules unless an option is the only way to fix a bug or support a newly-added ECMAScript feature. ## <a name="license"></a>License [](https://app.fossa.io/projects/git%2Bhttps%3A%2F%2Fgithub.com%2Feslint%2Feslint?ref=badge_large) ## <a name="team"></a>Team These folks keep the project moving and are resources for help. <!-- NOTE: This section is autogenerated. Do not manually edit.--> <!--teamstart--> ### Technical Steering Committee (TSC) The people who manage releases, review feature requests, and meet regularly to ensure ESLint is properly maintained. <table><tbody><tr><td align="center" valign="top" width="11%"> <a href="https://github.com/nzakas"> <img src="https://github.com/nzakas.png?s=75" width="75" height="75"><br /> Nicholas C. Zakas </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/btmills"> <img src="https://github.com/btmills.png?s=75" width="75" height="75"><br /> Brandon Mills </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/mdjermanovic"> <img src="https://github.com/mdjermanovic.png?s=75" width="75" height="75"><br /> Milos Djermanovic </a> </td></tr></tbody></table> ### Reviewers The people who review and implement new features. <table><tbody><tr><td align="center" valign="top" width="11%"> <a href="https://github.com/mysticatea"> <img src="https://github.com/mysticatea.png?s=75" width="75" height="75"><br /> Toru Nagashima </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/aladdin-add"> <img src="https://github.com/aladdin-add.png?s=75" width="75" height="75"><br /> 薛定谔的猫 </a> </td></tr></tbody></table> ### Committers The people who review and fix bugs and help triage issues. <table><tbody><tr><td align="center" valign="top" width="11%"> <a href="https://github.com/brettz9"> <img src="https://github.com/brettz9.png?s=75" width="75" height="75"><br /> Brett Zamir </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/bmish"> <img src="https://github.com/bmish.png?s=75" width="75" height="75"><br /> Bryan Mishkin </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/g-plane"> <img src="https://github.com/g-plane.png?s=75" width="75" height="75"><br /> Pig Fang </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/anikethsaha"> <img src="https://github.com/anikethsaha.png?s=75" width="75" height="75"><br /> Anix </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/yeonjuan"> <img src="https://github.com/yeonjuan.png?s=75" width="75" height="75"><br /> YeonJuan </a> </td><td align="center" valign="top" width="11%"> <a href="https://github.com/snitin315"> <img src="https://github.com/snitin315.png?s=75" width="75" height="75"><br /> Nitin Kumar </a> </td></tr></tbody></table> <!--teamend--> ## <a name="sponsors"></a>Sponsors The following companies, organizations, and individuals support ESLint's ongoing maintenance and development. [Become a Sponsor](https://opencollective.com/eslint) to get your logo on our README and website. <!-- NOTE: This section is autogenerated. 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Schema references ($ref) are not resolved, they are passed as is. Alternatively, you can pass a `{pre, post}` object as `cb`, and then `pre` will be called before traversing child elements, and `post` will be called after all child elements have been traversed. Callback is passed these parameters: - _schema_: the current schema object - _JSON pointer_: from the root schema to the current schema object - _root schema_: the schema passed to `traverse` object - _parent JSON pointer_: from the root schema to the parent schema object (see below) - _parent keyword_: the keyword inside which this schema appears (e.g. `properties`, `anyOf`, etc.) - _parent schema_: not necessarily parent object/array; in the example above the parent schema for `{type: 'string'}` is the root schema - _index/property_: index or property name in the array/object containing multiple schemas; in the example above for `{type: 'string'}` the property name is `'foo'` ## Traverse objects in all unknown keywords ```javascript const traverse = require('json-schema-traverse'); const schema = { mySchema: { minimum: 1, maximum: 2 } }; traverse(schema, {allKeys: true, cb}); // cb is called 2 times with: // 1. root schema // 2. mySchema ``` Without option `allKeys: true` callback will be called only with root schema. ## License [MIT](https://github.com/epoberezkin/json-schema-traverse/blob/master/LICENSE) # Acorn A tiny, fast JavaScript parser written in JavaScript. ## Community Acorn is open source software released under an [MIT license](https://github.com/acornjs/acorn/blob/master/acorn/LICENSE). You are welcome to [report bugs](https://github.com/acornjs/acorn/issues) or create pull requests on [github](https://github.com/acornjs/acorn). For questions and discussion, please use the [Tern discussion forum](https://discuss.ternjs.net). ## Installation The easiest way to install acorn is from [`npm`](https://www.npmjs.com/): ```sh npm install acorn ``` Alternately, you can download the source and build acorn yourself: ```sh git clone https://github.com/acornjs/acorn.git cd acorn npm install ``` ## Interface **parse**`(input, options)` is the main interface to the library. The `input` parameter is a string, `options` can be undefined or an object setting some of the options listed below. The return value will be an abstract syntax tree object as specified by the [ESTree spec](https://github.com/estree/estree). ```javascript let acorn = require("acorn"); console.log(acorn.parse("1 + 1")); ``` When encountering a syntax error, the parser will raise a `SyntaxError` object with a meaningful message. The error object will have a `pos` property that indicates the string offset at which the error occurred, and a `loc` object that contains a `{line, column}` object referring to that same position. Options can be provided by passing a second argument, which should be an object containing any of these fields: - **ecmaVersion**: Indicates the ECMAScript version to parse. Must be either 3, 5, 6 (2015), 7 (2016), 8 (2017), 9 (2018), 10 (2019) or 11 (2020, partial support). This influences support for strict mode, the set of reserved words, and support for new syntax features. Default is 10. **NOTE**: Only 'stage 4' (finalized) ECMAScript features are being implemented by Acorn. Other proposed new features can be implemented through plugins. - **sourceType**: Indicate the mode the code should be parsed in. Can be either `"script"` or `"module"`. This influences global strict mode and parsing of `import` and `export` declarations. **NOTE**: If set to `"module"`, then static `import` / `export` syntax will be valid, even if `ecmaVersion` is less than 6. - **onInsertedSemicolon**: If given a callback, that callback will be called whenever a missing semicolon is inserted by the parser. The callback will be given the character offset of the point where the semicolon is inserted as argument, and if `locations` is on, also a `{line, column}` object representing this position. - **onTrailingComma**: Like `onInsertedSemicolon`, but for trailing commas. - **allowReserved**: If `false`, using a reserved word will generate an error. Defaults to `true` for `ecmaVersion` 3, `false` for higher versions. When given the value `"never"`, reserved words and keywords can also not be used as property names (as in Internet Explorer's old parser). - **allowReturnOutsideFunction**: By default, a return statement at the top level raises an error. Set this to `true` to accept such code. - **allowImportExportEverywhere**: By default, `import` and `export` declarations can only appear at a program's top level. Setting this option to `true` allows them anywhere where a statement is allowed. - **allowAwaitOutsideFunction**: By default, `await` expressions can only appear inside `async` functions. Setting this option to `true` allows to have top-level `await` expressions. They are still not allowed in non-`async` functions, though. - **allowHashBang**: When this is enabled (off by default), if the code starts with the characters `#!` (as in a shellscript), the first line will be treated as a comment. - **locations**: When `true`, each node has a `loc` object attached with `start` and `end` subobjects, each of which contains the one-based line and zero-based column numbers in `{line, column}` form. Default is `false`. - **onToken**: If a function is passed for this option, each found token will be passed in same format as tokens returned from `tokenizer().getToken()`. If array is passed, each found token is pushed to it. Note that you are not allowed to call the parser from the callback—that will corrupt its internal state. - **onComment**: If a function is passed for this option, whenever a comment is encountered the function will be called with the following parameters: - `block`: `true` if the comment is a block comment, false if it is a line comment. - `text`: The content of the comment. - `start`: Character offset of the start of the comment. - `end`: Character offset of the end of the comment. When the `locations` options is on, the `{line, column}` locations of the comment’s start and end are passed as two additional parameters. If array is passed for this option, each found comment is pushed to it as object in Esprima format: ```javascript { "type": "Line" | "Block", "value": "comment text", "start": Number, "end": Number, // If `locations` option is on: "loc": { "start": {line: Number, column: Number} "end": {line: Number, column: Number} }, // If `ranges` option is on: "range": [Number, Number] } ``` Note that you are not allowed to call the parser from the callback—that will corrupt its internal state. - **ranges**: Nodes have their start and end characters offsets recorded in `start` and `end` properties (directly on the node, rather than the `loc` object, which holds line/column data. To also add a [semi-standardized](https://bugzilla.mozilla.org/show_bug.cgi?id=745678) `range` property holding a `[start, end]` array with the same numbers, set the `ranges` option to `true`. - **program**: It is possible to parse multiple files into a single AST by passing the tree produced by parsing the first file as the `program` option in subsequent parses. This will add the toplevel forms of the parsed file to the "Program" (top) node of an existing parse tree. - **sourceFile**: When the `locations` option is `true`, you can pass this option to add a `source` attribute in every node’s `loc` object. Note that the contents of this option are not examined or processed in any way; you are free to use whatever format you choose. - **directSourceFile**: Like `sourceFile`, but a `sourceFile` property will be added (regardless of the `location` option) directly to the nodes, rather than the `loc` object. - **preserveParens**: If this option is `true`, parenthesized expressions are represented by (non-standard) `ParenthesizedExpression` nodes that have a single `expression` property containing the expression inside parentheses. **parseExpressionAt**`(input, offset, options)` will parse a single expression in a string, and return its AST. It will not complain if there is more of the string left after the expression. **tokenizer**`(input, options)` returns an object with a `getToken` method that can be called repeatedly to get the next token, a `{start, end, type, value}` object (with added `loc` property when the `locations` option is enabled and `range` property when the `ranges` option is enabled). When the token's type is `tokTypes.eof`, you should stop calling the method, since it will keep returning that same token forever. In ES6 environment, returned result can be used as any other protocol-compliant iterable: ```javascript for (let token of acorn.tokenizer(str)) { // iterate over the tokens } // transform code to array of tokens: var tokens = [...acorn.tokenizer(str)]; ``` **tokTypes** holds an object mapping names to the token type objects that end up in the `type` properties of tokens. **getLineInfo**`(input, offset)` can be used to get a `{line, column}` object for a given program string and offset. ### The `Parser` class Instances of the **`Parser`** class contain all the state and logic that drives a parse. It has static methods `parse`, `parseExpressionAt`, and `tokenizer` that match the top-level functions by the same name. When extending the parser with plugins, you need to call these methods on the extended version of the class. To extend a parser with plugins, you can use its static `extend` method. ```javascript var acorn = require("acorn"); var jsx = require("acorn-jsx"); var JSXParser = acorn.Parser.extend(jsx()); JSXParser.parse("foo(<bar/>)"); ``` The `extend` method takes any number of plugin values, and returns a new `Parser` class that includes the extra parser logic provided by the plugins. ## Command line interface The `bin/acorn` utility can be used to parse a file from the command line. It accepts as arguments its input file and the following options: - `--ecma3|--ecma5|--ecma6|--ecma7|--ecma8|--ecma9|--ecma10`: Sets the ECMAScript version to parse. Default is version 9. - `--module`: Sets the parsing mode to `"module"`. Is set to `"script"` otherwise. - `--locations`: Attaches a "loc" object to each node with "start" and "end" subobjects, each of which contains the one-based line and zero-based column numbers in `{line, column}` form. - `--allow-hash-bang`: If the code starts with the characters #! (as in a shellscript), the first line will be treated as a comment. - `--compact`: No whitespace is used in the AST output. - `--silent`: Do not output the AST, just return the exit status. - `--help`: Print the usage information and quit. The utility spits out the syntax tree as JSON data. ## Existing plugins - [`acorn-jsx`](https://github.com/RReverser/acorn-jsx): Parse [Facebook JSX syntax extensions](https://github.com/facebook/jsx) Plugins for ECMAScript proposals: - [`acorn-stage3`](https://github.com/acornjs/acorn-stage3): Parse most stage 3 proposals, bundling: - [`acorn-class-fields`](https://github.com/acornjs/acorn-class-fields): Parse [class fields proposal](https://github.com/tc39/proposal-class-fields) - [`acorn-import-meta`](https://github.com/acornjs/acorn-import-meta): Parse [import.meta proposal](https://github.com/tc39/proposal-import-meta) - [`acorn-private-methods`](https://github.com/acornjs/acorn-private-methods): parse [private methods, getters and setters proposal](https://github.com/tc39/proposal-private-methods)n # lodash.merge v4.6.2 The [Lodash](https://lodash.com/) method `_.merge` exported as a [Node.js](https://nodejs.org/) module. ## Installation Using npm: ```bash $ {sudo -H} npm i -g npm $ npm i --save lodash.merge ``` In Node.js: ```js var merge = require('lodash.merge'); ``` See the [documentation](https://lodash.com/docs#merge) or [package source](https://github.com/lodash/lodash/blob/4.6.2-npm-packages/lodash.merge) for more details. # `asbuild` [](https://github.com/AssemblyScript/asbuild/stargazers) *A simple build tool for [AssemblyScript](https://assemblyscript.org) projects, similar to `cargo`, etc.* ## 🚩 Table of Contents - [Installing](#-installing) - [Usage](#-usage) - [`asb init`](#asb-init---create-an-empty-project) - [`asb test`](#asb-test---run-as-pect-tests) - [`asb fmt`](#asb-fmt---format-as-files-using-eslint) - [`asb run`](#asb-run---run-a-wasi-binary) - [`asb build`](#asb-build---compile-the-project-using-asc) - [Background](#-background) ## 🔧 Installing Install it globally ``` npm install -g asbuild ``` Or, locally as dev dependencies ``` npm install --save-dev asbuild ``` ## 💡 Usage ``` Build tool for AssemblyScript projects. Usage: asb [command] [options] Commands: asb Alias of build command, to maintain back-ward compatibility [default] asb build Compile a local package and all of its dependencies [aliases: compile, make] asb init [baseDir] Create a new AS package in an given directory asb test Run as-pect tests asb fmt [paths..] This utility formats current module using eslint. [aliases: format, lint] Options: --version Show version number [boolean] --help Show help [boolean] ``` ### `asb init` - Create an empty project ``` asb init [baseDir] Create a new AS package in an given directory Positionals: baseDir Create a sample AS project in this directory [string] [default: "."] Options: --version Show version number [boolean] --help Show help [boolean] --yes Skip the interactive prompt [boolean] [default: false] ``` ### `asb test` - Run as-pect tests ``` asb test Run as-pect tests USAGE: asb test [options] -- [aspect_options] Options: --version Show version number [boolean] --help Show help [boolean] --verbose, --vv Print out arguments passed to as-pect [boolean] [default: false] ``` ### `asb fmt` - Format AS files using ESlint ``` asb fmt [paths..] This utility formats current module using eslint. Positionals: paths Paths to format [array] [default: ["."]] Initialisation: --init Generates recommended eslint config for AS Projects [boolean] Miscellaneous --lint, --dry-run Tries to fix problems without saving the changes to the file system [boolean] [default: false] Options: --version Show version number [boolean] --help Show help ``` ### `asb run` - Run a WASI binary ``` asb run Run a WASI binary USAGE: asb run [options] [binary path] -- [binary options] Positionals: binary path to Wasm binary [string] [required] Options: --version Show version number [boolean] --help Show help [boolean] --preopen, -p comma separated list of directories to open. [default: "."] ``` ### `asb build` - Compile the project using asc ``` asb build Compile a local package and all of its dependencies USAGE: asb build [entry_file] [options] -- [asc_options] Options: --version Show version number [boolean] --help Show help [boolean] --baseDir, -d Base directory of project. [string] [default: "."] --config, -c Path to asconfig file [string] [default: "./asconfig.json"] --wat Output wat file to outDir [boolean] [default: false] --outDir Directory to place built binaries. Default "./build/<target>/" [string] --target Target for compilation [string] [default: "release"] --verbose Print out arguments passed to asc [boolean] [default: false] Examples: asb build Build release of 'assembly/index.ts to build/release/packageName.wasm asb build --target release Build a release binary asb build -- --measure Pass argument to 'asc' ``` #### Defaults ##### Project structure ``` project/ package.json asconfig.json assembly/ index.ts build/ release/ project.wasm debug/ project.wasm ``` - If no entry file passed and no `entry` field is in `asconfig.json`, `project/assembly/index.ts` is assumed. - `asconfig.json` allows for options for different compile targets, e.g. release, debug, etc. `asc` defaults to the release target. - The default build directory is `./build`, and artifacts are placed at `./build/<target>/packageName.wasm`. ##### Workspaces If a `workspace` field is added to a top level `asconfig.json` file, then each path in the array is built and placed into the top level `outDir`. For example, `asconfig.json`: ```json { "workspaces": ["a", "b"] } ``` Running `asb` in the directory below will use the top level build directory to place all the binaries. ``` project/ package.json asconfig.json a/ asconfig.json assembly/ index.ts b/ asconfig.json assembly/ index.ts build/ release/ a.wasm b.wasm debug/ a.wasm b.wasm ``` To see an example in action check out the [test workspace](./tests/build_test) ## 📖 Background Asbuild started as wrapper around `asc` to provide an easier CLI interface and now has been extened to support other commands like `init`, `test` and `fmt` just like `cargo` to become a one stop build tool for AS Projects. ## 📜 License This library is provided under the open-source [MIT license](https://choosealicense.com/licenses/mit/). # safe-buffer [![travis][travis-image]][travis-url] [![npm][npm-image]][npm-url] [![downloads][downloads-image]][downloads-url] [![javascript style guide][standard-image]][standard-url] [travis-image]: https://img.shields.io/travis/feross/safe-buffer/master.svg [travis-url]: https://travis-ci.org/feross/safe-buffer [npm-image]: https://img.shields.io/npm/v/safe-buffer.svg [npm-url]: https://npmjs.org/package/safe-buffer [downloads-image]: https://img.shields.io/npm/dm/safe-buffer.svg [downloads-url]: https://npmjs.org/package/safe-buffer [standard-image]: https://img.shields.io/badge/code_style-standard-brightgreen.svg [standard-url]: https://standardjs.com #### Safer Node.js Buffer API **Use the new Node.js Buffer APIs (`Buffer.from`, `Buffer.alloc`, `Buffer.allocUnsafe`, `Buffer.allocUnsafeSlow`) in all versions of Node.js.** **Uses the built-in implementation when available.** ## install ``` npm install safe-buffer ``` ## usage The goal of this package is to provide a safe replacement for the node.js `Buffer`. It's a drop-in replacement for `Buffer`. You can use it by adding one `require` line to the top of your node.js modules: ```js var Buffer = require('safe-buffer').Buffer // Existing buffer code will continue to work without issues: new Buffer('hey', 'utf8') new Buffer([1, 2, 3], 'utf8') new Buffer(obj) new Buffer(16) // create an uninitialized buffer (potentially unsafe) // But you can use these new explicit APIs to make clear what you want: Buffer.from('hey', 'utf8') // convert from many types to a Buffer Buffer.alloc(16) // create a zero-filled buffer (safe) Buffer.allocUnsafe(16) // create an uninitialized buffer (potentially unsafe) ``` ## api ### Class Method: Buffer.from(array) <!-- YAML added: v3.0.0 --> * `array` {Array} Allocates a new `Buffer` using an `array` of octets. ```js const buf = Buffer.from([0x62,0x75,0x66,0x66,0x65,0x72]); // creates a new Buffer containing ASCII bytes // ['b','u','f','f','e','r'] ``` A `TypeError` will be thrown if `array` is not an `Array`. ### Class Method: Buffer.from(arrayBuffer[, byteOffset[, length]]) <!-- YAML added: v5.10.0 --> * `arrayBuffer` {ArrayBuffer} The `.buffer` property of a `TypedArray` or a `new ArrayBuffer()` * `byteOffset` {Number} Default: `0` * `length` {Number} Default: `arrayBuffer.length - byteOffset` When passed a reference to the `.buffer` property of a `TypedArray` instance, the newly created `Buffer` will share the same allocated memory as the TypedArray. ```js const arr = new Uint16Array(2); arr[0] = 5000; arr[1] = 4000; const buf = Buffer.from(arr.buffer); // shares the memory with arr; console.log(buf); // Prints: <Buffer 88 13 a0 0f> // changing the TypedArray changes the Buffer also arr[1] = 6000; console.log(buf); // Prints: <Buffer 88 13 70 17> ``` The optional `byteOffset` and `length` arguments specify a memory range within the `arrayBuffer` that will be shared by the `Buffer`. ```js const ab = new ArrayBuffer(10); const buf = Buffer.from(ab, 0, 2); console.log(buf.length); // Prints: 2 ``` A `TypeError` will be thrown if `arrayBuffer` is not an `ArrayBuffer`. ### Class Method: Buffer.from(buffer) <!-- YAML added: v3.0.0 --> * `buffer` {Buffer} Copies the passed `buffer` data onto a new `Buffer` instance. ```js const buf1 = Buffer.from('buffer'); const buf2 = Buffer.from(buf1); buf1[0] = 0x61; console.log(buf1.toString()); // 'auffer' console.log(buf2.toString()); // 'buffer' (copy is not changed) ``` A `TypeError` will be thrown if `buffer` is not a `Buffer`. ### Class Method: Buffer.from(str[, encoding]) <!-- YAML added: v5.10.0 --> * `str` {String} String to encode. * `encoding` {String} Encoding to use, Default: `'utf8'` Creates a new `Buffer` containing the given JavaScript string `str`. If provided, the `encoding` parameter identifies the character encoding. If not provided, `encoding` defaults to `'utf8'`. ```js const buf1 = Buffer.from('this is a tést'); console.log(buf1.toString()); // prints: this is a tést console.log(buf1.toString('ascii')); // prints: this is a tC)st const buf2 = Buffer.from('7468697320697320612074c3a97374', 'hex'); console.log(buf2.toString()); // prints: this is a tést ``` A `TypeError` will be thrown if `str` is not a string. ### Class Method: Buffer.alloc(size[, fill[, encoding]]) <!-- YAML added: v5.10.0 --> * `size` {Number} * `fill` {Value} Default: `undefined` * `encoding` {String} Default: `utf8` Allocates a new `Buffer` of `size` bytes. If `fill` is `undefined`, the `Buffer` will be *zero-filled*. ```js const buf = Buffer.alloc(5); console.log(buf); // <Buffer 00 00 00 00 00> ``` The `size` must be less than or equal to the value of `require('buffer').kMaxLength` (on 64-bit architectures, `kMaxLength` is `(2^31)-1`). Otherwise, a [`RangeError`][] is thrown. A zero-length Buffer will be created if a `size` less than or equal to 0 is specified. If `fill` is specified, the allocated `Buffer` will be initialized by calling `buf.fill(fill)`. See [`buf.fill()`][] for more information. ```js const buf = Buffer.alloc(5, 'a'); console.log(buf); // <Buffer 61 61 61 61 61> ``` If both `fill` and `encoding` are specified, the allocated `Buffer` will be initialized by calling `buf.fill(fill, encoding)`. For example: ```js const buf = Buffer.alloc(11, 'aGVsbG8gd29ybGQ=', 'base64'); console.log(buf); // <Buffer 68 65 6c 6c 6f 20 77 6f 72 6c 64> ``` Calling `Buffer.alloc(size)` can be significantly slower than the alternative `Buffer.allocUnsafe(size)` but ensures that the newly created `Buffer` instance contents will *never contain sensitive data*. A `TypeError` will be thrown if `size` is not a number. ### Class Method: Buffer.allocUnsafe(size) <!-- YAML added: v5.10.0 --> * `size` {Number} Allocates a new *non-zero-filled* `Buffer` of `size` bytes. The `size` must be less than or equal to the value of `require('buffer').kMaxLength` (on 64-bit architectures, `kMaxLength` is `(2^31)-1`). Otherwise, a [`RangeError`][] is thrown. A zero-length Buffer will be created if a `size` less than or equal to 0 is specified. The underlying memory for `Buffer` instances created in this way is *not initialized*. The contents of the newly created `Buffer` are unknown and *may contain sensitive data*. Use [`buf.fill(0)`][] to initialize such `Buffer` instances to zeroes. ```js const buf = Buffer.allocUnsafe(5); console.log(buf); // <Buffer 78 e0 82 02 01> // (octets will be different, every time) buf.fill(0); console.log(buf); // <Buffer 00 00 00 00 00> ``` A `TypeError` will be thrown if `size` is not a number. Note that the `Buffer` module pre-allocates an internal `Buffer` instance of size `Buffer.poolSize` that is used as a pool for the fast allocation of new `Buffer` instances created using `Buffer.allocUnsafe(size)` (and the deprecated `new Buffer(size)` constructor) only when `size` is less than or equal to `Buffer.poolSize >> 1` (floor of `Buffer.poolSize` divided by two). The default value of `Buffer.poolSize` is `8192` but can be modified. Use of this pre-allocated internal memory pool is a key difference between calling `Buffer.alloc(size, fill)` vs. `Buffer.allocUnsafe(size).fill(fill)`. Specifically, `Buffer.alloc(size, fill)` will *never* use the internal Buffer pool, while `Buffer.allocUnsafe(size).fill(fill)` *will* use the internal Buffer pool if `size` is less than or equal to half `Buffer.poolSize`. The difference is subtle but can be important when an application requires the additional performance that `Buffer.allocUnsafe(size)` provides. ### Class Method: Buffer.allocUnsafeSlow(size) <!-- YAML added: v5.10.0 --> * `size` {Number} Allocates a new *non-zero-filled* and non-pooled `Buffer` of `size` bytes. The `size` must be less than or equal to the value of `require('buffer').kMaxLength` (on 64-bit architectures, `kMaxLength` is `(2^31)-1`). Otherwise, a [`RangeError`][] is thrown. A zero-length Buffer will be created if a `size` less than or equal to 0 is specified. The underlying memory for `Buffer` instances created in this way is *not initialized*. The contents of the newly created `Buffer` are unknown and *may contain sensitive data*. Use [`buf.fill(0)`][] to initialize such `Buffer` instances to zeroes. When using `Buffer.allocUnsafe()` to allocate new `Buffer` instances, allocations under 4KB are, by default, sliced from a single pre-allocated `Buffer`. This allows applications to avoid the garbage collection overhead of creating many individually allocated Buffers. This approach improves both performance and memory usage by eliminating the need to track and cleanup as many `Persistent` objects. However, in the case where a developer may need to retain a small chunk of memory from a pool for an indeterminate amount of time, it may be appropriate to create an un-pooled Buffer instance using `Buffer.allocUnsafeSlow()` then copy out the relevant bits. ```js // need to keep around a few small chunks of memory const store = []; socket.on('readable', () => { const data = socket.read(); // allocate for retained data const sb = Buffer.allocUnsafeSlow(10); // copy the data into the new allocation data.copy(sb, 0, 0, 10); store.push(sb); }); ``` Use of `Buffer.allocUnsafeSlow()` should be used only as a last resort *after* a developer has observed undue memory retention in their applications. A `TypeError` will be thrown if `size` is not a number. ### All the Rest The rest of the `Buffer` API is exactly the same as in node.js. [See the docs](https://nodejs.org/api/buffer.html). ## Related links - [Node.js issue: Buffer(number) is unsafe](https://github.com/nodejs/node/issues/4660) - [Node.js Enhancement Proposal: Buffer.from/Buffer.alloc/Buffer.zalloc/Buffer() soft-deprecate](https://github.com/nodejs/node-eps/pull/4) ## Why is `Buffer` unsafe? Today, the node.js `Buffer` constructor is overloaded to handle many different argument types like `String`, `Array`, `Object`, `TypedArrayView` (`Uint8Array`, etc.), `ArrayBuffer`, and also `Number`. The API is optimized for convenience: you can throw any type at it, and it will try to do what you want. Because the Buffer constructor is so powerful, you often see code like this: ```js // Convert UTF-8 strings to hex function toHex (str) { return new Buffer(str).toString('hex') } ``` ***But what happens if `toHex` is called with a `Number` argument?*** ### Remote Memory Disclosure If an attacker can make your program call the `Buffer` constructor with a `Number` argument, then they can make it allocate uninitialized memory from the node.js process. This could potentially disclose TLS private keys, user data, or database passwords. When the `Buffer` constructor is passed a `Number` argument, it returns an **UNINITIALIZED** block of memory of the specified `size`. When you create a `Buffer` like this, you **MUST** overwrite the contents before returning it to the user. From the [node.js docs](https://nodejs.org/api/buffer.html#buffer_new_buffer_size): > `new Buffer(size)` > > - `size` Number > > The underlying memory for `Buffer` instances created in this way is not initialized. > **The contents of a newly created `Buffer` are unknown and could contain sensitive > data.** Use `buf.fill(0)` to initialize a Buffer to zeroes. (Emphasis our own.) Whenever the programmer intended to create an uninitialized `Buffer` you often see code like this: ```js var buf = new Buffer(16) // Immediately overwrite the uninitialized buffer with data from another buffer for (var i = 0; i < buf.length; i++) { buf[i] = otherBuf[i] } ``` ### Would this ever be a problem in real code? Yes. It's surprisingly common to forget to check the type of your variables in a dynamically-typed language like JavaScript. Usually the consequences of assuming the wrong type is that your program crashes with an uncaught exception. But the failure mode for forgetting to check the type of arguments to the `Buffer` constructor is more catastrophic. Here's an example of a vulnerable service that takes a JSON payload and converts it to hex: ```js // Take a JSON payload {str: "some string"} and convert it to hex var server = http.createServer(function (req, res) { var data = '' req.setEncoding('utf8') req.on('data', function (chunk) { data += chunk }) req.on('end', function () { var body = JSON.parse(data) res.end(new Buffer(body.str).toString('hex')) }) }) server.listen(8080) ``` In this example, an http client just has to send: ```json { "str": 1000 } ``` and it will get back 1,000 bytes of uninitialized memory from the server. This is a very serious bug. It's similar in severity to the [the Heartbleed bug](http://heartbleed.com/) that allowed disclosure of OpenSSL process memory by remote attackers. ### Which real-world packages were vulnerable? #### [`bittorrent-dht`](https://www.npmjs.com/package/bittorrent-dht) [Mathias Buus](https://github.com/mafintosh) and I ([Feross Aboukhadijeh](http://feross.org/)) found this issue in one of our own packages, [`bittorrent-dht`](https://www.npmjs.com/package/bittorrent-dht). The bug would allow anyone on the internet to send a series of messages to a user of `bittorrent-dht` and get them to reveal 20 bytes at a time of uninitialized memory from the node.js process. Here's [the commit](https://github.com/feross/bittorrent-dht/commit/6c7da04025d5633699800a99ec3fbadf70ad35b8) that fixed it. We released a new fixed version, created a [Node Security Project disclosure](https://nodesecurity.io/advisories/68), and deprecated all vulnerable versions on npm so users will get a warning to upgrade to a newer version. #### [`ws`](https://www.npmjs.com/package/ws) That got us wondering if there were other vulnerable packages. Sure enough, within a short period of time, we found the same issue in [`ws`](https://www.npmjs.com/package/ws), the most popular WebSocket implementation in node.js. If certain APIs were called with `Number` parameters instead of `String` or `Buffer` as expected, then uninitialized server memory would be disclosed to the remote peer. These were the vulnerable methods: ```js socket.send(number) socket.ping(number) socket.pong(number) ``` Here's a vulnerable socket server with some echo functionality: ```js server.on('connection', function (socket) { socket.on('message', function (message) { message = JSON.parse(message) if (message.type === 'echo') { socket.send(message.data) // send back the user's message } }) }) ``` `socket.send(number)` called on the server, will disclose server memory. Here's [the release](https://github.com/websockets/ws/releases/tag/1.0.1) where the issue was fixed, with a more detailed explanation. Props to [Arnout Kazemier](https://github.com/3rd-Eden) for the quick fix. Here's the [Node Security Project disclosure](https://nodesecurity.io/advisories/67). ### What's the solution? It's important that node.js offers a fast way to get memory otherwise performance-critical applications would needlessly get a lot slower. But we need a better way to *signal our intent* as programmers. **When we want uninitialized memory, we should request it explicitly.** Sensitive functionality should not be packed into a developer-friendly API that loosely accepts many different types. This type of API encourages the lazy practice of passing variables in without checking the type very carefully. #### A new API: `Buffer.allocUnsafe(number)` The functionality of creating buffers with uninitialized memory should be part of another API. We propose `Buffer.allocUnsafe(number)`. This way, it's not part of an API that frequently gets user input of all sorts of different types passed into it. ```js var buf = Buffer.allocUnsafe(16) // careful, uninitialized memory! // Immediately overwrite the uninitialized buffer with data from another buffer for (var i = 0; i < buf.length; i++) { buf[i] = otherBuf[i] } ``` ### How do we fix node.js core? We sent [a PR to node.js core](https://github.com/nodejs/node/pull/4514) (merged as `semver-major`) which defends against one case: ```js var str = 16 new Buffer(str, 'utf8') ``` In this situation, it's implied that the programmer intended the first argument to be a string, since they passed an encoding as a second argument. Today, node.js will allocate uninitialized memory in the case of `new Buffer(number, encoding)`, which is probably not what the programmer intended. But this is only a partial solution, since if the programmer does `new Buffer(variable)` (without an `encoding` parameter) there's no way to know what they intended. If `variable` is sometimes a number, then uninitialized memory will sometimes be returned. ### What's the real long-term fix? We could deprecate and remove `new Buffer(number)` and use `Buffer.allocUnsafe(number)` when we need uninitialized memory. But that would break 1000s of packages. ~~We believe the best solution is to:~~ ~~1. Change `new Buffer(number)` to return safe, zeroed-out memory~~ ~~2. Create a new API for creating uninitialized Buffers. We propose: `Buffer.allocUnsafe(number)`~~ #### Update We now support adding three new APIs: - `Buffer.from(value)` - convert from any type to a buffer - `Buffer.alloc(size)` - create a zero-filled buffer - `Buffer.allocUnsafe(size)` - create an uninitialized buffer with given size This solves the core problem that affected `ws` and `bittorrent-dht` which is `Buffer(variable)` getting tricked into taking a number argument. This way, existing code continues working and the impact on the npm ecosystem will be minimal. Over time, npm maintainers can migrate performance-critical code to use `Buffer.allocUnsafe(number)` instead of `new Buffer(number)`. ### Conclusion We think there's a serious design issue with the `Buffer` API as it exists today. It promotes insecure software by putting high-risk functionality into a convenient API with friendly "developer ergonomics". This wasn't merely a theoretical exercise because we found the issue in some of the most popular npm packages. Fortunately, there's an easy fix that can be applied today. Use `safe-buffer` in place of `buffer`. ```js var Buffer = require('safe-buffer').Buffer ``` Eventually, we hope that node.js core can switch to this new, safer behavior. We believe the impact on the ecosystem would be minimal since it's not a breaking change. Well-maintained, popular packages would be updated to use `Buffer.alloc` quickly, while older, insecure packages would magically become safe from this attack vector. ## links - [Node.js PR: buffer: throw if both length and enc are passed](https://github.com/nodejs/node/pull/4514) - [Node Security Project disclosure for `ws`](https://nodesecurity.io/advisories/67) - [Node Security Project disclosure for`bittorrent-dht`](https://nodesecurity.io/advisories/68) ## credit The original issues in `bittorrent-dht` ([disclosure](https://nodesecurity.io/advisories/68)) and `ws` ([disclosure](https://nodesecurity.io/advisories/67)) were discovered by [Mathias Buus](https://github.com/mafintosh) and [Feross Aboukhadijeh](http://feross.org/). Thanks to [Adam Baldwin](https://github.com/evilpacket) for helping disclose these issues and for his work running the [Node Security Project](https://nodesecurity.io/). Thanks to [John Hiesey](https://github.com/jhiesey) for proofreading this README and auditing the code. ## license MIT. Copyright (C) [Feross Aboukhadijeh](http://feross.org) # prebuild-install > **A command line tool to easily install prebuilt binaries for multiple versions of Node.js & Electron on a specific platform.** > By default it downloads prebuilt binaries from a GitHub release. [](https://www.npmjs.com/package/prebuild-install)  [](https://github.com/prebuild/prebuild-install/actions/workflows/test.yml) [](https://david-dm.org/prebuild/prebuild-install) [](http://standardjs.com/) ## Note **Instead of [`prebuild`](https://github.com/prebuild/prebuild) paired with [`prebuild-install`](https://github.com/prebuild/prebuild-install), we recommend [`prebuildify`](https://github.com/prebuild/prebuildify) paired with [`node-gyp-build`](https://github.com/prebuild/node-gyp-build).** With `prebuildify`, all prebuilt binaries are shipped inside the package that is published to npm, which means there's no need for a separate download step like you find in `prebuild`. The irony of this approach is that it is faster to download all prebuilt binaries for every platform when they are bundled than it is to download a single prebuilt binary as an install script. Upsides: 1. No extra download step, making it more reliable and faster to install. 2. Supports changing runtime versions locally and using the same install between Node.js and Electron. Reinstalling or rebuilding is not necessary, as all prebuilt binaries are in the npm tarball and the correct one is simply picked on runtime. 3. The `node-gyp-build` runtime dependency is dependency-free and will remain so out of principle, because introducing dependencies would negate the shorter install time. 4. Prebuilt binaries work even if npm install scripts are disabled. 5. The npm package checksum covers prebuilt binaries too. Downsides: 1. The installed npm package is larger on disk. Using [Node-API](https://nodejs.org/api/n-api.html) alleviates this because Node-API binaries are runtime-agnostic and forward-compatible. 2. Publishing is mildly more complicated, because `npm publish` must be done after compiling and fetching prebuilt binaries (typically in CI). ## Usage Use [`prebuild`](https://github.com/prebuild/prebuild) to create and upload prebuilt binaries. Then change your package.json install script to: ```json { "scripts": { "install": "prebuild-install || node-gyp rebuild" } } ``` ### Help ``` prebuild-install [options] --download -d [url] (download prebuilds, no url means github) --target -t version (version to install for) --runtime -r runtime (Node runtime [node, napi or electron] to build or install for, default is node) --path -p path (make a prebuild-install here) --token -T gh-token (github token for private repos) --arch arch (target CPU architecture, see Node OS module docs, default is current arch) --platform platform (target platform, see Node OS module docs, default is current platform) --tag-prefix <prefix> (github tag prefix, default is "v") --build-from-source (skip prebuild download) --verbose (log verbosely) --libc (use provided libc rather than system default) --debug (set Debug or Release configuration) --version (print prebuild-install version and exit) ``` When `prebuild-install` is run via an `npm` script, options `--build-from-source`, `--debug`, `--download`, `--target`, `--runtime`, `--arch` and `--platform` may be passed through via arguments given to the `npm` command. Alternatively you can set environment variables `npm_config_build_from_source=true`, `npm_config_platform`, `npm_config_arch`, `npm_config_target` and `npm_config_runtime`. ### Private Repositories `prebuild-install` supports downloading prebuilds from private GitHub repositories using the `-T <github-token>`: ``` $ prebuild-install -T <github-token> ``` If you don't want to use the token on cli you can put it in `~/.prebuild-installrc`: ``` token=<github-token> ``` Alternatively you can specify it in the `prebuild-install_token` environment variable. Note that using a GitHub token uses the API to resolve the correct release meaning that you are subject to the ([GitHub Rate Limit](https://developer.github.com/v3/rate_limit/)). ### Create GitHub Token To create a token: - Go to [this page](https://github.com/settings/tokens) - Click the `Generate new token` button - Give the token a name and click the `Generate token` button, see below  The default scopes should be fine. ### Custom binaries The end user can override binary download location through environment variables in their .npmrc file. The variable needs to meet the mask `% your package name %_binary_host` or `% your package name %_binary_host_mirror`. For example: ``` leveldown_binary_host=http://overriden-host.com/overriden-path ``` Note that the package version subpath and file name will still be appended. So if you are installing `leveldown@1.2.3` the resulting url will be: ``` http://overriden-host.com/overriden-path/v1.2.3/leveldown-v1.2.3-node-v57-win32-x64.tar.gz ``` #### Local prebuilds If you want to use prebuilds from your local filesystem, you can use the `% your package name %_local_prebuilds` .npmrc variable to set a path to the folder containing prebuilds. For example: ``` leveldown_local_prebuilds=/path/to/prebuilds ``` This option will look directly in that folder for bundles created with `prebuild`, for example: ``` /path/to/prebuilds/leveldown-v1.2.3-node-v57-win32-x64.tar.gz ``` Non-absolute paths resolve relative to the directory of the package invoking prebuild-install, e.g. for nested dependencies. ### Cache All prebuilt binaries are cached to minimize traffic. So first `prebuild-install` picks binaries from the cache and if no binary could be found, it will be downloaded. Depending on the environment, the cache folder is determined in the following order: - `${npm_config_cache}/_prebuilds` - `${APP_DATA}/npm-cache/_prebuilds` - `${HOME}/.npm/_prebuilds` ## License MIT binaryen.js =========== **binaryen.js** is a port of [Binaryen](https://github.com/WebAssembly/binaryen) to the Web, allowing you to generate [WebAssembly](https://webassembly.org) using a JavaScript API. <a href="https://github.com/AssemblyScript/binaryen.js/actions?query=workflow%3ABuild"><img src="https://img.shields.io/github/workflow/status/AssemblyScript/binaryen.js/Build/master?label=build&logo=github" alt="Build status" /></a> <a href="https://www.npmjs.com/package/binaryen"><img src="https://img.shields.io/npm/v/binaryen.svg?label=latest&color=007acc&logo=npm" alt="npm version" /></a> <a href="https://www.npmjs.com/package/binaryen"><img src="https://img.shields.io/npm/v/binaryen/nightly.svg?label=nightly&color=007acc&logo=npm" alt="npm nightly version" /></a> Usage ----- ``` $> npm install binaryen ``` ```js var binaryen = require("binaryen"); // Create a module with a single function var myModule = new binaryen.Module(); myModule.addFunction("add", binaryen.createType([ binaryen.i32, binaryen.i32 ]), binaryen.i32, [ binaryen.i32 ], myModule.block(null, [ myModule.local.set(2, myModule.i32.add( myModule.local.get(0, binaryen.i32), myModule.local.get(1, binaryen.i32) ) ), myModule.return( myModule.local.get(2, binaryen.i32) ) ]) ); myModule.addFunctionExport("add", "add"); // Optimize the module using default passes and levels myModule.optimize(); // Validate the module if (!myModule.validate()) throw new Error("validation error"); // Generate text format and binary var textData = myModule.emitText(); var wasmData = myModule.emitBinary(); // Example usage with the WebAssembly API var compiled = new WebAssembly.Module(wasmData); var instance = new WebAssembly.Instance(compiled, {}); console.log(instance.exports.add(41, 1)); ``` The buildbot also publishes nightly versions once a day if there have been changes. The latest nightly can be installed through ``` $> npm install binaryen@nightly ``` or you can use one of the [previous versions](https://github.com/AssemblyScript/binaryen.js/tags) instead if necessary. ### Usage with a CDN * From GitHub via [jsDelivr](https://www.jsdelivr.com):<br /> `https://cdn.jsdelivr.net/gh/AssemblyScript/binaryen.js@VERSION/index.js` * From npm via [jsDelivr](https://www.jsdelivr.com):<br /> `https://cdn.jsdelivr.net/npm/binaryen@VERSION/index.js` * From npm via [unpkg](https://unpkg.com):<br /> `https://unpkg.com/binaryen@VERSION/index.js` Replace `VERSION` with a [specific version](https://github.com/AssemblyScript/binaryen.js/releases) or omit it (not recommended in production) to use master/latest. API --- **Please note** that the Binaryen API is evolving fast and that definitions and documentation provided by the package tend to get out of sync despite our best efforts. It's a bot after all. If you rely on binaryen.js and spot an issue, please consider sending a PR our way by updating [index.d.ts](./index.d.ts) and [README.md](./README.md) to reflect the [current API](https://github.com/WebAssembly/binaryen/blob/master/src/js/binaryen.js-post.js). <!-- START doctoc generated TOC please keep comment here to allow auto update --> <!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE --> ### Contents - [Types](#types) - [Module construction](#module-construction) - [Module manipulation](#module-manipulation) - [Module validation](#module-validation) - [Module optimization](#module-optimization) - [Module creation](#module-creation) - [Expression construction](#expression-construction) - [Control flow](#control-flow) - [Variable accesses](#variable-accesses) - [Integer operations](#integer-operations) - [Floating point operations](#floating-point-operations) - [Datatype conversions](#datatype-conversions) - [Function calls](#function-calls) - [Linear memory accesses](#linear-memory-accesses) - [Host operations](#host-operations) - [Vector operations 🦄](#vector-operations-) - [Atomic memory accesses 🦄](#atomic-memory-accesses-) - [Atomic read-modify-write operations 🦄](#atomic-read-modify-write-operations-) - [Atomic wait and notify operations 🦄](#atomic-wait-and-notify-operations-) - [Sign extension operations 🦄](#sign-extension-operations-) - [Multi-value operations 🦄](#multi-value-operations-) - [Exception handling operations 🦄](#exception-handling-operations-) - [Reference types operations 🦄](#reference-types-operations-) - [Expression manipulation](#expression-manipulation) - [Relooper](#relooper) - [Source maps](#source-maps) - [Debugging](#debugging) <!-- END doctoc generated TOC please keep comment here to allow auto update --> [Future features](http://webassembly.org/docs/future-features/) 🦄 might not be supported by all runtimes. ### Types * **none**: `Type`<br /> The none type, e.g., `void`. * **i32**: `Type`<br /> 32-bit integer type. * **i64**: `Type`<br /> 64-bit integer type. * **f32**: `Type`<br /> 32-bit float type. * **f64**: `Type`<br /> 64-bit float (double) type. * **v128**: `Type`<br /> 128-bit vector type. 🦄 * **funcref**: `Type`<br /> A function reference. 🦄 * **anyref**: `Type`<br /> Any host reference. 🦄 * **nullref**: `Type`<br /> A null reference. 🦄 * **exnref**: `Type`<br /> An exception reference. 🦄 * **unreachable**: `Type`<br /> Special type indicating unreachable code when obtaining information about an expression. * **auto**: `Type`<br /> Special type used in **Module#block** exclusively. Lets the API figure out a block's result type automatically. * **createType**(types: `Type[]`): `Type`<br /> Creates a multi-value type from an array of types. * **expandType**(type: `Type`): `Type[]`<br /> Expands a multi-value type to an array of types. ### Module construction * new **Module**()<br /> Constructs a new module. * **parseText**(text: `string`): `Module`<br /> Creates a module from Binaryen's s-expression text format (not official stack-style text format). * **readBinary**(data: `Uint8Array`): `Module`<br /> Creates a module from binary data. ### Module manipulation * Module#**addFunction**(name: `string`, params: `Type`, results: `Type`, vars: `Type[]`, body: `ExpressionRef`): `FunctionRef`<br /> Adds a function. `vars` indicate additional locals, in the given order. * Module#**getFunction**(name: `string`): `FunctionRef`<br /> Gets a function, by name, * Module#**removeFunction**(name: `string`): `void`<br /> Removes a function, by name. * Module#**getNumFunctions**(): `number`<br /> Gets the number of functions within the module. * Module#**getFunctionByIndex**(index: `number`): `FunctionRef`<br /> Gets the function at the specified index. * Module#**addFunctionImport**(internalName: `string`, externalModuleName: `string`, externalBaseName: `string`, params: `Type`, results: `Type`): `void`<br /> Adds a function import. * Module#**addTableImport**(internalName: `string`, externalModuleName: `string`, externalBaseName: `string`): `void`<br /> Adds a table import. There's just one table for now, using name `"0"`. * Module#**addMemoryImport**(internalName: `string`, externalModuleName: `string`, externalBaseName: `string`): `void`<br /> Adds a memory import. There's just one memory for now, using name `"0"`. * Module#**addGlobalImport**(internalName: `string`, externalModuleName: `string`, externalBaseName: `string`, globalType: `Type`): `void`<br /> Adds a global variable import. Imported globals must be immutable. * Module#**addFunctionExport**(internalName: `string`, externalName: `string`): `ExportRef`<br /> Adds a function export. * Module#**addTableExport**(internalName: `string`, externalName: `string`): `ExportRef`<br /> Adds a table export. There's just one table for now, using name `"0"`. * Module#**addMemoryExport**(internalName: `string`, externalName: `string`): `ExportRef`<br /> Adds a memory export. There's just one memory for now, using name `"0"`. * Module#**addGlobalExport**(internalName: `string`, externalName: `string`): `ExportRef`<br /> Adds a global variable export. Exported globals must be immutable. * Module#**getNumExports**(): `number`<br /> Gets the number of exports witin the module. * Module#**getExportByIndex**(index: `number`): `ExportRef`<br /> Gets the export at the specified index. * Module#**removeExport**(externalName: `string`): `void`<br /> Removes an export, by external name. * Module#**addGlobal**(name: `string`, type: `Type`, mutable: `number`, value: `ExpressionRef`): `GlobalRef`<br /> Adds a global instance variable. * Module#**getGlobal**(name: `string`): `GlobalRef`<br /> Gets a global, by name, * Module#**removeGlobal**(name: `string`): `void`<br /> Removes a global, by name. * Module#**setFunctionTable**(initial: `number`, maximum: `number`, funcs: `string[]`, offset?: `ExpressionRef`): `void`<br /> Sets the contents of the function table. There's just one table for now, using name `"0"`. * Module#**getFunctionTable**(): `{ imported: boolean, segments: TableElement[] }`<br /> Gets the contents of the function table. * TableElement#**offset**: `ExpressionRef` * TableElement#**names**: `string[]` * Module#**setMemory**(initial: `number`, maximum: `number`, exportName: `string | null`, segments: `MemorySegment[]`, flags?: `number[]`, shared?: `boolean`): `void`<br /> Sets the memory. There's just one memory for now, using name `"0"`. Providing `exportName` also creates a memory export. * MemorySegment#**offset**: `ExpressionRef` * MemorySegment#**data**: `Uint8Array` * MemorySegment#**passive**: `boolean` * Module#**getNumMemorySegments**(): `number`<br /> Gets the number of memory segments within the module. * Module#**getMemorySegmentInfoByIndex**(index: `number`): `MemorySegmentInfo`<br /> Gets information about the memory segment at the specified index. * MemorySegmentInfo#**offset**: `number` * MemorySegmentInfo#**data**: `Uint8Array` * MemorySegmentInfo#**passive**: `boolean` * Module#**setStart**(start: `FunctionRef`): `void`<br /> Sets the start function. * Module#**getFeatures**(): `Features`<br /> Gets the WebAssembly features enabled for this module. Note that the return value may be a bitmask indicating multiple features. Possible feature flags are: * Features.**MVP**: `Features` * Features.**Atomics**: `Features` * Features.**BulkMemory**: `Features` * Features.**MutableGlobals**: `Features` * Features.**NontrappingFPToInt**: `Features` * Features.**SignExt**: `Features` * Features.**SIMD128**: `Features` * Features.**ExceptionHandling**: `Features` * Features.**TailCall**: `Features` * Features.**ReferenceTypes**: `Features` * Features.**Multivalue**: `Features` * Features.**All**: `Features` * Module#**setFeatures**(features: `Features`): `void`<br /> Sets the WebAssembly features enabled for this module. * Module#**addCustomSection**(name: `string`, contents: `Uint8Array`): `void`<br /> Adds a custom section to the binary. * Module#**autoDrop**(): `void`<br /> Enables automatic insertion of `drop` operations where needed. Lets you not worry about dropping when creating your code. * **getFunctionInfo**(ftype: `FunctionRef`: `FunctionInfo`<br /> Obtains information about a function. * FunctionInfo#**name**: `string` * FunctionInfo#**module**: `string | null` (if imported) * FunctionInfo#**base**: `string | null` (if imported) * FunctionInfo#**params**: `Type` * FunctionInfo#**results**: `Type` * FunctionInfo#**vars**: `Type` * FunctionInfo#**body**: `ExpressionRef` * **getGlobalInfo**(global: `GlobalRef`): `GlobalInfo`<br /> Obtains information about a global. * GlobalInfo#**name**: `string` * GlobalInfo#**module**: `string | null` (if imported) * GlobalInfo#**base**: `string | null` (if imported) * GlobalInfo#**type**: `Type` * GlobalInfo#**mutable**: `boolean` * GlobalInfo#**init**: `ExpressionRef` * **getExportInfo**(export_: `ExportRef`): `ExportInfo`<br /> Obtains information about an export. * ExportInfo#**kind**: `ExternalKind` * ExportInfo#**name**: `string` * ExportInfo#**value**: `string` Possible `ExternalKind` values are: * **ExternalFunction**: `ExternalKind` * **ExternalTable**: `ExternalKind` * **ExternalMemory**: `ExternalKind` * **ExternalGlobal**: `ExternalKind` * **ExternalEvent**: `ExternalKind` * **getEventInfo**(event: `EventRef`): `EventInfo`<br /> Obtains information about an event. * EventInfo#**name**: `string` * EventInfo#**module**: `string | null` (if imported) * EventInfo#**base**: `string | null` (if imported) * EventInfo#**attribute**: `number` * EventInfo#**params**: `Type` * EventInfo#**results**: `Type` * **getSideEffects**(expr: `ExpressionRef`, features: `FeatureFlags`): `SideEffects`<br /> Gets the side effects of the specified expression. * SideEffects.**None**: `SideEffects` * SideEffects.**Branches**: `SideEffects` * SideEffects.**Calls**: `SideEffects` * SideEffects.**ReadsLocal**: `SideEffects` * SideEffects.**WritesLocal**: `SideEffects` * SideEffects.**ReadsGlobal**: `SideEffects` * SideEffects.**WritesGlobal**: `SideEffects` * SideEffects.**ReadsMemory**: `SideEffects` * SideEffects.**WritesMemory**: `SideEffects` * SideEffects.**ImplicitTrap**: `SideEffects` * SideEffects.**IsAtomic**: `SideEffects` * SideEffects.**Throws**: `SideEffects` * SideEffects.**Any**: `SideEffects` ### Module validation * Module#**validate**(): `boolean`<br /> Validates the module. Returns `true` if valid, otherwise prints validation errors and returns `false`. ### Module optimization * Module#**optimize**(): `void`<br /> Optimizes the module using the default optimization passes. * Module#**optimizeFunction**(func: `FunctionRef | string`): `void`<br /> Optimizes a single function using the default optimization passes. * Module#**runPasses**(passes: `string[]`): `void`<br /> Runs the specified passes on the module. * Module#**runPassesOnFunction**(func: `FunctionRef | string`, passes: `string[]`): `void`<br /> Runs the specified passes on a single function. * **getOptimizeLevel**(): `number`<br /> Gets the currently set optimize level. `0`, `1`, `2` correspond to `-O0`, `-O1`, `-O2` (default), etc. * **setOptimizeLevel**(level: `number`): `void`<br /> Sets the optimization level to use. `0`, `1`, `2` correspond to `-O0`, `-O1`, `-O2` (default), etc. * **getShrinkLevel**(): `number`<br /> Gets the currently set shrink level. `0`, `1`, `2` correspond to `-O0`, `-Os` (default), `-Oz`. * **setShrinkLevel**(level: `number`): `void`<br /> Sets the shrink level to use. `0`, `1`, `2` correspond to `-O0`, `-Os` (default), `-Oz`. * **getDebugInfo**(): `boolean`<br /> Gets whether generating debug information is currently enabled or not. * **setDebugInfo**(on: `boolean`): `void`<br /> Enables or disables debug information in emitted binaries. * **getLowMemoryUnused**(): `boolean`<br /> Gets whether the low 1K of memory can be considered unused when optimizing. * **setLowMemoryUnused**(on: `boolean`): `void`<br /> Enables or disables whether the low 1K of memory can be considered unused when optimizing. * **getPassArgument**(key: `string`): `string | null`<br /> Gets the value of the specified arbitrary pass argument. * **setPassArgument**(key: `string`, value: `string | null`): `void`<br /> Sets the value of the specified arbitrary pass argument. Removes the respective argument if `value` is `null`. * **clearPassArguments**(): `void`<br /> Clears all arbitrary pass arguments. * **getAlwaysInlineMaxSize**(): `number`<br /> Gets the function size at which we always inline. * **setAlwaysInlineMaxSize**(size: `number`): `void`<br /> Sets the function size at which we always inline. * **getFlexibleInlineMaxSize**(): `number`<br /> Gets the function size which we inline when functions are lightweight. * **setFlexibleInlineMaxSize**(size: `number`): `void`<br /> Sets the function size which we inline when functions are lightweight. * **getOneCallerInlineMaxSize**(): `number`<br /> Gets the function size which we inline when there is only one caller. * **setOneCallerInlineMaxSize**(size: `number`): `void`<br /> Sets the function size which we inline when there is only one caller. ### Module creation * Module#**emitBinary**(): `Uint8Array`<br /> Returns the module in binary format. * Module#**emitBinary**(sourceMapUrl: `string | null`): `BinaryWithSourceMap`<br /> Returns the module in binary format with its source map. If `sourceMapUrl` is `null`, source map generation is skipped. * BinaryWithSourceMap#**binary**: `Uint8Array` * BinaryWithSourceMap#**sourceMap**: `string | null` * Module#**emitText**(): `string`<br /> Returns the module in Binaryen's s-expression text format (not official stack-style text format). * Module#**emitAsmjs**(): `string`<br /> Returns the [asm.js](http://asmjs.org/) representation of the module. * Module#**dispose**(): `void`<br /> Releases the resources held by the module once it isn't needed anymore. ### Expression construction #### [Control flow](http://webassembly.org/docs/semantics/#control-constructs-and-instructions) * Module#**block**(label: `string | null`, children: `ExpressionRef[]`, resultType?: `Type`): `ExpressionRef`<br /> Creates a block. `resultType` defaults to `none`. * Module#**if**(condition: `ExpressionRef`, ifTrue: `ExpressionRef`, ifFalse?: `ExpressionRef`): `ExpressionRef`<br /> Creates an if or if/else combination. * Module#**loop**(label: `string | null`, body: `ExpressionRef`): `ExpressionRef`<br /> Creates a loop. * Module#**br**(label: `string`, condition?: `ExpressionRef`, value?: `ExpressionRef`): `ExpressionRef`<br /> Creates a branch (br) to a label. * Module#**switch**(labels: `string[]`, defaultLabel: `string`, condition: `ExpressionRef`, value?: `ExpressionRef`): `ExpressionRef`<br /> Creates a switch (br_table). * Module#**nop**(): `ExpressionRef`<br /> Creates a no-operation (nop) instruction. * Module#**return**(value?: `ExpressionRef`): `ExpressionRef` Creates a return. * Module#**unreachable**(): `ExpressionRef`<br /> Creates an [unreachable](http://webassembly.org/docs/semantics/#unreachable) instruction that will always trap. * Module#**drop**(value: `ExpressionRef`): `ExpressionRef`<br /> Creates a [drop](http://webassembly.org/docs/semantics/#type-parametric-operators) of a value. * Module#**select**(condition: `ExpressionRef`, ifTrue: `ExpressionRef`, ifFalse: `ExpressionRef`, type?: `Type`): `ExpressionRef`<br /> Creates a [select](http://webassembly.org/docs/semantics/#type-parametric-operators) of one of two values. #### [Variable accesses](http://webassembly.org/docs/semantics/#local-variables) * Module#**local.get**(index: `number`, type: `Type`): `ExpressionRef`<br /> Creates a local.get for the local at the specified index. Note that we must specify the type here as we may not have created the local being accessed yet. * Module#**local.set**(index: `number`, value: `ExpressionRef`): `ExpressionRef`<br /> Creates a local.set for the local at the specified index. * Module#**local.tee**(index: `number`, value: `ExpressionRef`, type: `Type`): `ExpressionRef`<br /> Creates a local.tee for the local at the specified index. A tee differs from a set in that the value remains on the stack. Note that we must specify the type here as we may not have created the local being accessed yet. * Module#**global.get**(name: `string`, type: `Type`): `ExpressionRef`<br /> Creates a global.get for the global with the specified name. Note that we must specify the type here as we may not have created the global being accessed yet. * Module#**global.set**(name: `string`, value: `ExpressionRef`): `ExpressionRef`<br /> Creates a global.set for the global with the specified name. #### [Integer operations](http://webassembly.org/docs/semantics/#32-bit-integer-operators) * Module#i32.**const**(value: `number`): `ExpressionRef` * Module#i32.**clz**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**ctz**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**popcnt**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**eqz**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**div_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**div_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**rem_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**rem_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**and**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**or**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**xor**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**shl**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**shr_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**shr_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**rotl**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**rotr**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**lt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**le_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**le_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**gt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**gt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**ge_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32.**ge_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` > * Module#i64.**const**(low: `number`, high: `number`): `ExpressionRef` * Module#i64.**clz**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**ctz**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**popcnt**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**eqz**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**div_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**div_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**rem_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**rem_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**and**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**or**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**xor**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**shl**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**shr_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**shr_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**rotl**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**rotr**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**lt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**le_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**le_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**gt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**gt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**ge_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64.**ge_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` #### [Floating point operations](http://webassembly.org/docs/semantics/#floating-point-operators) * Module#f32.**const**(value: `number`): `ExpressionRef` * Module#f32.**const_bits**(value: `number`): `ExpressionRef` * Module#f32.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**abs**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**ceil**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**floor**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**trunc**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**nearest**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**sqrt**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**div**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**copysign**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**min**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**max**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**lt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**le**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**gt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32.**ge**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` > * Module#f64.**const**(value: `number`): `ExpressionRef` * Module#f64.**const_bits**(value: `number`): `ExpressionRef` * Module#f64.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**abs**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**ceil**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**floor**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**trunc**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**nearest**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**sqrt**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**div**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**copysign**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**min**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**max**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**lt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**le**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**gt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64.**ge**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` #### [Datatype conversions](http://webassembly.org/docs/semantics/#datatype-conversions-truncations-reinterpretations-promotions-and-demotions) * Module#i32.**trunc_s.f32**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**trunc_s.f64**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**trunc_u.f32**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**trunc_u.f64**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**reinterpret**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**wrap**(value: `ExpressionRef`): `ExpressionRef` > * Module#i64.**trunc_s.f32**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**trunc_s.f64**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**trunc_u.f32**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**trunc_u.f64**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**reinterpret**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**extend_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**extend_u**(value: `ExpressionRef`): `ExpressionRef` > * Module#f32.**reinterpret**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**convert_s.i32**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**convert_s.i64**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**convert_u.i32**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**convert_u.i64**(value: `ExpressionRef`): `ExpressionRef` * Module#f32.**demote**(value: `ExpressionRef`): `ExpressionRef` > * Module#f64.**reinterpret**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**convert_s.i32**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**convert_s.i64**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**convert_u.i32**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**convert_u.i64**(value: `ExpressionRef`): `ExpressionRef` * Module#f64.**promote**(value: `ExpressionRef`): `ExpressionRef` #### [Function calls](http://webassembly.org/docs/semantics/#calls) * Module#**call**(name: `string`, operands: `ExpressionRef[]`, returnType: `Type`): `ExpressionRef` Creates a call to a function. Note that we must specify the return type here as we may not have created the function being called yet. * Module#**return_call**(name: `string`, operands: `ExpressionRef[]`, returnType: `Type`): `ExpressionRef`<br /> Like **call**, but creates a tail-call. 🦄 * Module#**call_indirect**(target: `ExpressionRef`, operands: `ExpressionRef[]`, params: `Type`, results: `Type`): `ExpressionRef`<br /> Similar to **call**, but calls indirectly, i.e., via a function pointer, so an expression replaces the name as the called value. * Module#**return_call_indirect**(target: `ExpressionRef`, operands: `ExpressionRef[]`, params: `Type`, results: `Type`): `ExpressionRef`<br /> Like **call_indirect**, but creates a tail-call. 🦄 #### [Linear memory accesses](http://webassembly.org/docs/semantics/#linear-memory-accesses) * Module#i32.**load**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**load8_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**load8_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**load16_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**load16_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**store**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**store8**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef`<br /> * Module#i32.**store16**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef`<br /> > * Module#i64.**load**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load8_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load8_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load16_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load16_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load32_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**load32_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**store**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**store8**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**store16**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**store32**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` > * Module#f32.**load**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#f32.**store**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` > * Module#f64.**load**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#f64.**store**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` #### [Host operations](http://webassembly.org/docs/semantics/#resizing) * Module#**memory.size**(): `ExpressionRef` * Module#**memory.grow**(value: `number`): `ExpressionRef` #### [Vector operations](https://github.com/WebAssembly/simd/blob/master/proposals/simd/SIMD.md) 🦄 * Module#v128.**const**(bytes: `Uint8Array`): `ExpressionRef` * Module#v128.**load**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#v128.**store**(offset: `number`, align: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#v128.**not**(value: `ExpressionRef`): `ExpressionRef` * Module#v128.**and**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#v128.**or**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#v128.**xor**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#v128.**andnot**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#v128.**bitselect**(left: `ExpressionRef`, right: `ExpressionRef`, cond: `ExpressionRef`): `ExpressionRef` > * Module#i8x16.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**extract_lane_s**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i8x16.**extract_lane_u**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i8x16.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**lt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**gt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**gt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**le_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**ge_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**ge_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**any_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**all_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**shl**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**shr_s**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**shr_u**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**add_saturate_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**add_saturate_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**sub_saturate_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**sub_saturate_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**min_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**min_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**max_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**max_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**avgr_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**narrow_i16x8_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i8x16.**narrow_i16x8_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` > * Module#i16x8.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**extract_lane_s**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i16x8.**extract_lane_u**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i16x8.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**lt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**gt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**gt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**le_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**ge_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**ge_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**any_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**all_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**shl**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**shr_s**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**shr_u**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**add_saturate_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**add_saturate_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**sub_saturate_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**sub_saturate_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**min_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**min_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**max_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**max_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**avgr_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**narrow_i32x4_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**narrow_i32x4_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**widen_low_i8x16_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**widen_high_i8x16_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**widen_low_i8x16_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**widen_high_i8x16_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**load8x8_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i16x8.**load8x8_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#i32x4.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**extract_lane_s**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i32x4.**extract_lane_u**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i32x4.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**lt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**gt_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**gt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**le_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**lt_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**ge_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**ge_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**any_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**all_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**shl**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**shr_s**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**shr_u**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**min_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**min_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**max_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**max_u**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**dot_i16x8_s**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**trunc_sat_f32x4_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**trunc_sat_f32x4_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**widen_low_i16x8_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**widen_high_i16x8_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**widen_low_i16x8_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**widen_high_i16x8_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**load16x4_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i32x4.**load16x4_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#i64x2.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**extract_lane_s**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i64x2.**extract_lane_u**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#i64x2.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**any_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**all_true**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**shl**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**shr_s**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**shr_u**(vec: `ExpressionRef`, shift: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**trunc_sat_f64x2_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**trunc_sat_f64x2_u**(value: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**load32x2_s**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64x2.**load32x2_u**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#f32x4.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**extract_lane**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#f32x4.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**lt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**gt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**le**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**ge**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**abs**(value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**sqrt**(value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**qfma**(a: `ExpressionRef`, b: `ExpressionRef`, c: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**qfms**(a: `ExpressionRef`, b: `ExpressionRef`, c: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**div**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**min**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**max**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**convert_i32x4_s**(value: `ExpressionRef`): `ExpressionRef` * Module#f32x4.**convert_i32x4_u**(value: `ExpressionRef`): `ExpressionRef` > * Module#f64x2.**splat**(value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**extract_lane**(vec: `ExpressionRef`, index: `number`): `ExpressionRef` * Module#f64x2.**replace_lane**(vec: `ExpressionRef`, index: `number`, value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**eq**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**ne**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**lt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**gt**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**le**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**ge**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**abs**(value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**neg**(value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**sqrt**(value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**qfma**(a: `ExpressionRef`, b: `ExpressionRef`, c: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**qfms**(a: `ExpressionRef`, b: `ExpressionRef`, c: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**add**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**sub**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**mul**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**div**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**min**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**max**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**convert_i64x2_s**(value: `ExpressionRef`): `ExpressionRef` * Module#f64x2.**convert_i64x2_u**(value: `ExpressionRef`): `ExpressionRef` > * Module#v8x16.**shuffle**(left: `ExpressionRef`, right: `ExpressionRef`, mask: `Uint8Array`): `ExpressionRef` * Module#v8x16.**swizzle**(left: `ExpressionRef`, right: `ExpressionRef`): `ExpressionRef` * Module#v8x16.**load_splat**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#v16x8.**load_splat**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#v32x4.**load_splat**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` > * Module#v64x2.**load_splat**(offset: `number`, align: `number`, ptr: `ExpressionRef`): `ExpressionRef` #### [Atomic memory accesses](https://github.com/WebAssembly/threads/blob/master/proposals/threads/Overview.md#atomic-memory-accesses) 🦄 * Module#i32.**atomic.load**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.load8_u**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.load16_u**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.store**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.store8**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.store16**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` > * Module#i64.**atomic.load**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.load8_u**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.load16_u**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.load32_u**(offset: `number`, ptr: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.store**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.store8**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.store16**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.store32**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` #### [Atomic read-modify-write operations](https://github.com/WebAssembly/threads/blob/master/proposals/threads/Overview.md#read-modify-write) 🦄 * Module#i32.**atomic.rmw.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw8_u.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i32.**atomic.rmw16_u.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` > * Module#i64.**atomic.rmw.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw8_u.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw16_u.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.add**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.sub**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.and**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.or**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.xor**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.xchg**(offset: `number`, ptr: `ExpressionRef`, value: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.rmw32_u.cmpxchg**(offset: `number`, ptr: `ExpressionRef`, expected: `ExpressionRef`, replacement: `ExpressionRef`): `ExpressionRef` #### [Atomic wait and notify operations](https://github.com/WebAssembly/threads/blob/master/proposals/threads/Overview.md#wait-and-notify-operators) 🦄 * Module#i32.**atomic.wait**(ptr: `ExpressionRef`, expected: `ExpressionRef`, timeout: `ExpressionRef`): `ExpressionRef` * Module#i64.**atomic.wait**(ptr: `ExpressionRef`, expected: `ExpressionRef`, timeout: `ExpressionRef`): `ExpressionRef` * Module#**atomic.notify**(ptr: `ExpressionRef`, notifyCount: `ExpressionRef`): `ExpressionRef` * Module#**atomic.fence**(): `ExpressionRef` #### [Sign extension operations](https://github.com/WebAssembly/sign-extension-ops/blob/master/proposals/sign-extension-ops/Overview.md) 🦄 * Module#i32.**extend8_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**extend16_s**(value: `ExpressionRef`): `ExpressionRef` > * Module#i64.**extend8_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**extend16_s**(value: `ExpressionRef`): `ExpressionRef` * Module#i64.**extend32_s**(value: `ExpressionRef`): `ExpressionRef` #### [Multi-value operations](https://github.com/WebAssembly/multi-value/blob/master/proposals/multi-value/Overview.md) 🦄 Note that these are pseudo instructions enabling Binaryen to reason about multiple values on the stack. * Module#**push**(value: `ExpressionRef`): `ExpressionRef` * Module#i32.**pop**(): `ExpressionRef` * Module#i64.**pop**(): `ExpressionRef` * Module#f32.**pop**(): `ExpressionRef` * Module#f64.**pop**(): `ExpressionRef` * Module#v128.**pop**(): `ExpressionRef` * Module#funcref.**pop**(): `ExpressionRef` * Module#anyref.**pop**(): `ExpressionRef` * Module#nullref.**pop**(): `ExpressionRef` * Module#exnref.**pop**(): `ExpressionRef` * Module#tuple.**make**(elements: `ExpressionRef[]`): `ExpressionRef` * Module#tuple.**extract**(tuple: `ExpressionRef`, index: `number`): `ExpressionRef` #### [Exception handling operations](https://github.com/WebAssembly/exception-handling/blob/master/proposals/Exceptions.md) 🦄 * Module#**try**(body: `ExpressionRef`, catchBody: `ExpressionRef`): `ExpressionRef` * Module#**throw**(event: `string`, operands: `ExpressionRef[]`): `ExpressionRef` * Module#**rethrow**(exnref: `ExpressionRef`): `ExpressionRef` * Module#**br_on_exn**(label: `string`, event: `string`, exnref: `ExpressionRef`): `ExpressionRef` > * Module#**addEvent**(name: `string`, attribute: `number`, params: `Type`, results: `Type`): `Event` * Module#**getEvent**(name: `string`): `Event` * Module#**removeEvent**(name: `stirng`): `void` * Module#**addEventImport**(internalName: `string`, externalModuleName: `string`, externalBaseName: `string`, attribute: `number`, params: `Type`, results: `Type`): `void` * Module#**addEventExport**(internalName: `string`, externalName: `string`): `ExportRef` #### [Reference types operations](https://github.com/WebAssembly/reference-types/blob/master/proposals/reference-types/Overview.md) 🦄 * Module#ref.**null**(): `ExpressionRef` * Module#ref.**is_null**(value: `ExpressionRef`): `ExpressionRef` * Module#ref.**func**(name: `string`): `ExpressionRef` ### Expression manipulation * **getExpressionId**(expr: `ExpressionRef`): `ExpressionId`<br /> Gets the id (kind) of the specified expression. Possible values are: * **InvalidId**: `ExpressionId` * **BlockId**: `ExpressionId` * **IfId**: `ExpressionId` * **LoopId**: `ExpressionId` * **BreakId**: `ExpressionId` * **SwitchId**: `ExpressionId` * **CallId**: `ExpressionId` * **CallIndirectId**: `ExpressionId` * **LocalGetId**: `ExpressionId` * **LocalSetId**: `ExpressionId` * **GlobalGetId**: `ExpressionId` * **GlobalSetId**: `ExpressionId` * **LoadId**: `ExpressionId` * **StoreId**: `ExpressionId` * **ConstId**: `ExpressionId` * **UnaryId**: `ExpressionId` * **BinaryId**: `ExpressionId` * **SelectId**: `ExpressionId` * **DropId**: `ExpressionId` * **ReturnId**: `ExpressionId` * **HostId**: `ExpressionId` * **NopId**: `ExpressionId` * **UnreachableId**: `ExpressionId` * **AtomicCmpxchgId**: `ExpressionId` * **AtomicRMWId**: `ExpressionId` * **AtomicWaitId**: `ExpressionId` * **AtomicNotifyId**: `ExpressionId` * **AtomicFenceId**: `ExpressionId` * **SIMDExtractId**: `ExpressionId` * **SIMDReplaceId**: `ExpressionId` * **SIMDShuffleId**: `ExpressionId` * **SIMDTernaryId**: `ExpressionId` * **SIMDShiftId**: `ExpressionId` * **SIMDLoadId**: `ExpressionId` * **MemoryInitId**: `ExpressionId` * **DataDropId**: `ExpressionId` * **MemoryCopyId**: `ExpressionId` * **MemoryFillId**: `ExpressionId` * **RefNullId**: `ExpressionId` * **RefIsNullId**: `ExpressionId` * **RefFuncId**: `ExpressionId` * **TryId**: `ExpressionId` * **ThrowId**: `ExpressionId` * **RethrowId**: `ExpressionId` * **BrOnExnId**: `ExpressionId` * **PushId**: `ExpressionId` * **PopId**: `ExpressionId` * **getExpressionType**(expr: `ExpressionRef`): `Type`<br /> Gets the type of the specified expression. * **getExpressionInfo**(expr: `ExpressionRef`): `ExpressionInfo`<br /> Obtains information about an expression, always including: * Info#**id**: `ExpressionId` * Info#**type**: `Type` Additional properties depend on the expression's `id` and are usually equivalent to the respective parameters when creating such an expression: * BlockInfo#**name**: `string` * BlockInfo#**children**: `ExpressionRef[]` > * IfInfo#**condition**: `ExpressionRef` * IfInfo#**ifTrue**: `ExpressionRef` * IfInfo#**ifFalse**: `ExpressionRef | null` > * LoopInfo#**name**: `string` * LoopInfo#**body**: `ExpressionRef` > * BreakInfo#**name**: `string` * BreakInfo#**condition**: `ExpressionRef | null` * BreakInfo#**value**: `ExpressionRef | null` > * SwitchInfo#**names**: `string[]` * SwitchInfo#**defaultName**: `string | null` * SwitchInfo#**condition**: `ExpressionRef` * SwitchInfo#**value**: `ExpressionRef | null` > * CallInfo#**target**: `string` * CallInfo#**operands**: `ExpressionRef[]` > * CallImportInfo#**target**: `string` * CallImportInfo#**operands**: `ExpressionRef[]` > * CallIndirectInfo#**target**: `ExpressionRef` * CallIndirectInfo#**operands**: `ExpressionRef[]` > * LocalGetInfo#**index**: `number` > * LocalSetInfo#**isTee**: `boolean` * LocalSetInfo#**index**: `number` * LocalSetInfo#**value**: `ExpressionRef` > * GlobalGetInfo#**name**: `string` > * GlobalSetInfo#**name**: `string` * GlobalSetInfo#**value**: `ExpressionRef` > * LoadInfo#**isAtomic**: `boolean` * LoadInfo#**isSigned**: `boolean` * LoadInfo#**offset**: `number` * LoadInfo#**bytes**: `number` * LoadInfo#**align**: `number` * LoadInfo#**ptr**: `ExpressionRef` > * StoreInfo#**isAtomic**: `boolean` * StoreInfo#**offset**: `number` * StoreInfo#**bytes**: `number` * StoreInfo#**align**: `number` * StoreInfo#**ptr**: `ExpressionRef` * StoreInfo#**value**: `ExpressionRef` > * ConstInfo#**value**: `number | { low: number, high: number }` > * UnaryInfo#**op**: `number` * UnaryInfo#**value**: `ExpressionRef` > * BinaryInfo#**op**: `number` * BinaryInfo#**left**: `ExpressionRef` * BinaryInfo#**right**: `ExpressionRef` > * SelectInfo#**ifTrue**: `ExpressionRef` * SelectInfo#**ifFalse**: `ExpressionRef` * SelectInfo#**condition**: `ExpressionRef` > * DropInfo#**value**: `ExpressionRef` > * ReturnInfo#**value**: `ExpressionRef | null` > * NopInfo > * UnreachableInfo > * HostInfo#**op**: `number` * HostInfo#**nameOperand**: `string | null` * HostInfo#**operands**: `ExpressionRef[]` > * AtomicRMWInfo#**op**: `number` * AtomicRMWInfo#**bytes**: `number` * AtomicRMWInfo#**offset**: `number` * AtomicRMWInfo#**ptr**: `ExpressionRef` * AtomicRMWInfo#**value**: `ExpressionRef` > * AtomicCmpxchgInfo#**bytes**: `number` * AtomicCmpxchgInfo#**offset**: `number` * AtomicCmpxchgInfo#**ptr**: `ExpressionRef` * AtomicCmpxchgInfo#**expected**: `ExpressionRef` * AtomicCmpxchgInfo#**replacement**: `ExpressionRef` > * AtomicWaitInfo#**ptr**: `ExpressionRef` * AtomicWaitInfo#**expected**: `ExpressionRef` * AtomicWaitInfo#**timeout**: `ExpressionRef` * AtomicWaitInfo#**expectedType**: `Type` > * AtomicNotifyInfo#**ptr**: `ExpressionRef` * AtomicNotifyInfo#**notifyCount**: `ExpressionRef` > * AtomicFenceInfo > * SIMDExtractInfo#**op**: `Op` * SIMDExtractInfo#**vec**: `ExpressionRef` * SIMDExtractInfo#**index**: `ExpressionRef` > * SIMDReplaceInfo#**op**: `Op` * SIMDReplaceInfo#**vec**: `ExpressionRef` * SIMDReplaceInfo#**index**: `ExpressionRef` * SIMDReplaceInfo#**value**: `ExpressionRef` > * SIMDShuffleInfo#**left**: `ExpressionRef` * SIMDShuffleInfo#**right**: `ExpressionRef` * SIMDShuffleInfo#**mask**: `Uint8Array` > * SIMDTernaryInfo#**op**: `Op` * SIMDTernaryInfo#**a**: `ExpressionRef` * SIMDTernaryInfo#**b**: `ExpressionRef` * SIMDTernaryInfo#**c**: `ExpressionRef` > * SIMDShiftInfo#**op**: `Op` * SIMDShiftInfo#**vec**: `ExpressionRef` * SIMDShiftInfo#**shift**: `ExpressionRef` > * SIMDLoadInfo#**op**: `Op` * SIMDLoadInfo#**offset**: `number` * SIMDLoadInfo#**align**: `number` * SIMDLoadInfo#**ptr**: `ExpressionRef` > * MemoryInitInfo#**segment**: `number` * MemoryInitInfo#**dest**: `ExpressionRef` * MemoryInitInfo#**offset**: `ExpressionRef` * MemoryInitInfo#**size**: `ExpressionRef` > * MemoryDropInfo#**segment**: `number` > * MemoryCopyInfo#**dest**: `ExpressionRef` * MemoryCopyInfo#**source**: `ExpressionRef` * MemoryCopyInfo#**size**: `ExpressionRef` > * MemoryFillInfo#**dest**: `ExpressionRef` * MemoryFillInfo#**value**: `ExpressionRef` * MemoryFillInfo#**size**: `ExpressionRef` > * TryInfo#**body**: `ExpressionRef` * TryInfo#**catchBody**: `ExpressionRef` > * RefNullInfo > * RefIsNullInfo#**value**: `ExpressionRef` > * RefFuncInfo#**func**: `string` > * ThrowInfo#**event**: `string` * ThrowInfo#**operands**: `ExpressionRef[]` > * RethrowInfo#**exnref**: `ExpressionRef` > * BrOnExnInfo#**name**: `string` * BrOnExnInfo#**event**: `string` * BrOnExnInfo#**exnref**: `ExpressionRef` > * PopInfo > * PushInfo#**value**: `ExpressionRef` * **emitText**(expression: `ExpressionRef`): `string`<br /> Emits the expression in Binaryen's s-expression text format (not official stack-style text format). * **copyExpression**(expression: `ExpressionRef`): `ExpressionRef`<br /> Creates a deep copy of an expression. ### Relooper * new **Relooper**()<br /> Constructs a relooper instance. This lets you provide an arbitrary CFG, and the relooper will structure it for WebAssembly. * Relooper#**addBlock**(code: `ExpressionRef`): `RelooperBlockRef`<br /> Adds a new block to the CFG, containing the provided code as its body. * Relooper#**addBranch**(from: `RelooperBlockRef`, to: `RelooperBlockRef`, condition: `ExpressionRef`, code: `ExpressionRef`): `void`<br /> Adds a branch from a block to another block, with a condition (or nothing, if this is the default branch to take from the origin - each block must have one such branch), and optional code to execute on the branch (useful for phis). * Relooper#**addBlockWithSwitch**(code: `ExpressionRef`, condition: `ExpressionRef`): `RelooperBlockRef`<br /> Adds a new block, which ends with a switch/br_table, with provided code and condition (that determines where we go in the switch). * Relooper#**addBranchForSwitch**(from: `RelooperBlockRef`, to: `RelooperBlockRef`, indexes: `number[]`, code: `ExpressionRef`): `void`<br /> Adds a branch from a block ending in a switch, to another block, using an array of indexes that determine where to go, and optional code to execute on the branch. * Relooper#**renderAndDispose**(entry: `RelooperBlockRef`, labelHelper: `number`, module: `Module`): `ExpressionRef`<br /> Renders and cleans up the Relooper instance. Call this after you have created all the blocks and branches, giving it the entry block (where control flow begins), a label helper variable (an index of a local we can use, necessary for irreducible control flow), and the module. This returns an expression - normal WebAssembly code - that you can use normally anywhere. ### Source maps * Module#**addDebugInfoFileName**(filename: `string`): `number`<br /> Adds a debug info file name to the module and returns its index. * Module#**getDebugInfoFileName**(index: `number`): `string | null` <br /> Gets the name of the debug info file at the specified index. * Module#**setDebugLocation**(func: `FunctionRef`, expr: `ExpressionRef`, fileIndex: `number`, lineNumber: `number`, columnNumber: `number`): `void`<br /> Sets the debug location of the specified `ExpressionRef` within the specified `FunctionRef`. ### Debugging * Module#**interpret**(): `void`<br /> Runs the module in the interpreter, calling the start function. # ESLint Scope ESLint Scope is the [ECMAScript](http://www.ecma-international.org/publications/standards/Ecma-262.htm) scope analyzer used in ESLint. It is a fork of [escope](http://github.com/estools/escope). ## Usage Install: ``` npm i eslint-scope --save ``` Example: ```js var eslintScope = require('eslint-scope'); var espree = require('espree'); var estraverse = require('estraverse'); var ast = espree.parse(code); var scopeManager = eslintScope.analyze(ast); var currentScope = scopeManager.acquire(ast); // global scope estraverse.traverse(ast, { enter: function(node, parent) { // do stuff if (/Function/.test(node.type)) { currentScope = scopeManager.acquire(node); // get current function scope } }, leave: function(node, parent) { if (/Function/.test(node.type)) { currentScope = currentScope.upper; // set to parent scope } // do stuff } }); ``` ## Contributing Issues and pull requests will be triaged and responded to as quickly as possible. We operate under the [ESLint Contributor Guidelines](http://eslint.org/docs/developer-guide/contributing), so please be sure to read them before contributing. If you're not sure where to dig in, check out the [issues](https://github.com/eslint/eslint-scope/issues). ## Build Commands * `npm test` - run all linting and tests * `npm run lint` - run all linting ## License ESLint Scope is licensed under a permissive BSD 2-clause license. # sha.js [](https://www.npmjs.org/package/sha.js) [](https://travis-ci.org/crypto-browserify/sha.js) [](https://david-dm.org/crypto-browserify/sha.js#info=dependencies) [](https://github.com/feross/standard) Node style `SHA` on pure JavaScript. ```js var shajs = require('sha.js') console.log(shajs('sha256').update('42').digest('hex')) // => 73475cb40a568e8da8a045ced110137e159f890ac4da883b6b17dc651b3a8049 console.log(new shajs.sha256().update('42').digest('hex')) // => 73475cb40a568e8da8a045ced110137e159f890ac4da883b6b17dc651b3a8049 var sha256stream = shajs('sha256') sha256stream.end('42') console.log(sha256stream.read().toString('hex')) // => 73475cb40a568e8da8a045ced110137e159f890ac4da883b6b17dc651b3a8049 ``` ## supported hashes `sha.js` currently implements: - SHA (SHA-0) -- **legacy, do not use in new systems** - SHA-1 -- **legacy, do not use in new systems** - SHA-224 - SHA-256 - SHA-384 - SHA-512 ## Not an actual stream Note, this doesn't actually implement a stream, but wrapping this in a stream is trivial. It does update incrementally, so you can hash things larger than RAM, as it uses a constant amount of memory (except when using base64 or utf8 encoding, see code comments). ## Acknowledgements This work is derived from Paul Johnston's [A JavaScript implementation of the Secure Hash Algorithm](http://pajhome.org.uk/crypt/md5/sha1.html). ## LICENSE [MIT](LICENSE) [](https://www.npmjs.com/package/espree) [](https://travis-ci.org/eslint/espree) [](https://www.npmjs.com/package/espree) [](https://www.bountysource.com/trackers/9348450-eslint?utm_source=9348450&utm_medium=shield&utm_campaign=TRACKER_BADGE) # Espree Espree started out as a fork of [Esprima](http://esprima.org) v1.2.2, the last stable published released of Esprima before work on ECMAScript 6 began. Espree is now built on top of [Acorn](https://github.com/ternjs/acorn), which has a modular architecture that allows extension of core functionality. The goal of Espree is to produce output that is similar to Esprima with a similar API so that it can be used in place of Esprima. ## Usage Install: ``` npm i espree ``` And in your Node.js code: ```javascript const espree = require("espree"); const ast = espree.parse(code); ``` ## API ### `parse()` `parse` parses the given code and returns a abstract syntax tree (AST). It takes two parameters. - `code` [string]() - the code which needs to be parsed. - `options (Optional)` [Object]() - read more about this [here](#options). ```javascript const espree = require("espree"); const ast = espree.parse(code, options); ``` **Example :** ```js const ast = espree.parse('let foo = "bar"', { ecmaVersion: 6 }); console.log(ast); ``` <details><summary>Output</summary> <p> ``` Node { type: 'Program', start: 0, end: 15, body: [ Node { type: 'VariableDeclaration', start: 0, end: 15, declarations: [Array], kind: 'let' } ], sourceType: 'script' } ``` </p> </details> ### `tokenize()` `tokenize` returns the tokens of a given code. It takes two parameters. - `code` [string]() - the code which needs to be parsed. - `options (Optional)` [Object]() - read more about this [here](#options). Even if `options` is empty or undefined or `options.tokens` is `false`, it assigns it to `true` in order to get the `tokens` array **Example :** ```js const tokens = espree.tokenize('let foo = "bar"', { ecmaVersion: 6 }); console.log(tokens); ``` <details><summary>Output</summary> <p> ``` Token { type: 'Keyword', value: 'let', start: 0, end: 3 }, Token { type: 'Identifier', value: 'foo', start: 4, end: 7 }, Token { type: 'Punctuator', value: '=', start: 8, end: 9 }, Token { type: 'String', value: '"bar"', start: 10, end: 15 } ``` </p> </details> ### `version` Returns the current `espree` version ### `VisitorKeys` Returns all visitor keys for traversing the AST from [eslint-visitor-keys](https://github.com/eslint/eslint-visitor-keys) ### `latestEcmaVersion` Returns the latest ECMAScript supported by `espree` ### `supportedEcmaVersions` Returns an array of all supported ECMAScript versions ## Options ```js const options = { // attach range information to each node range: false, // attach line/column location information to each node loc: false, // create a top-level comments array containing all comments comment: false, // create a top-level tokens array containing all tokens tokens: false, // Set to 3, 5 (default), 6, 7, 8, 9, 10, 11, or 12 to specify the version of ECMAScript syntax you want to use. // You can also set to 2015 (same as 6), 2016 (same as 7), 2017 (same as 8), 2018 (same as 9), 2019 (same as 10), 2020 (same as 11), or 2021 (same as 12) to use the year-based naming. ecmaVersion: 5, // specify which type of script you're parsing ("script" or "module") sourceType: "script", // specify additional language features ecmaFeatures: { // enable JSX parsing jsx: false, // enable return in global scope globalReturn: false, // enable implied strict mode (if ecmaVersion >= 5) impliedStrict: false } } ``` ## Esprima Compatibility Going Forward The primary goal is to produce the exact same AST structure and tokens as Esprima, and that takes precedence over anything else. (The AST structure being the [ESTree](https://github.com/estree/estree) API with JSX extensions.) Separate from that, Espree may deviate from what Esprima outputs in terms of where and how comments are attached, as well as what additional information is available on AST nodes. That is to say, Espree may add more things to the AST nodes than Esprima does but the overall AST structure produced will be the same. Espree may also deviate from Esprima in the interface it exposes. ## Contributing Issues and pull requests will be triaged and responded to as quickly as possible. We operate under the [ESLint Contributor Guidelines](http://eslint.org/docs/developer-guide/contributing), so please be sure to read them before contributing. If you're not sure where to dig in, check out the [issues](https://github.com/eslint/espree/issues). Espree is licensed under a permissive BSD 2-clause license. ## Security Policy We work hard to ensure that Espree is safe for everyone and that security issues are addressed quickly and responsibly. Read the full [security policy](https://github.com/eslint/.github/blob/master/SECURITY.md). ## Build Commands * `npm test` - run all linting and tests * `npm run lint` - run all linting * `npm run browserify` - creates a version of Espree that is usable in a browser ## Differences from Espree 2.x * The `tokenize()` method does not use `ecmaFeatures`. Any string will be tokenized completely based on ECMAScript 6 semantics. * Trailing whitespace no longer is counted as part of a node. * `let` and `const` declarations are no longer parsed by default. You must opt-in by using an `ecmaVersion` newer than `5` or setting `sourceType` to `module`. * The `esparse` and `esvalidate` binary scripts have been removed. * There is no `tolerant` option. We will investigate adding this back in the future. ## Known Incompatibilities In an effort to help those wanting to transition from other parsers to Espree, the following is a list of noteworthy incompatibilities with other parsers. These are known differences that we do not intend to change. ### Esprima 1.2.2 * Esprima counts trailing whitespace as part of each AST node while Espree does not. In Espree, the end of a node is where the last token occurs. * Espree does not parse `let` and `const` declarations by default. * Error messages returned for parsing errors are different. * There are two addition properties on every node and token: `start` and `end`. These represent the same data as `range` and are used internally by Acorn. ### Esprima 2.x * Esprima 2.x uses a different comment attachment algorithm that results in some comments being added in different places than Espree. The algorithm Espree uses is the same one used in Esprima 1.2.2. ## Frequently Asked Questions ### Why another parser [ESLint](http://eslint.org) had been relying on Esprima as its parser from the beginning. While that was fine when the JavaScript language was evolving slowly, the pace of development increased dramatically and Esprima had fallen behind. ESLint, like many other tools reliant on Esprima, has been stuck in using new JavaScript language features until Esprima updates, and that caused our users frustration. We decided the only way for us to move forward was to create our own parser, bringing us inline with JSHint and JSLint, and allowing us to keep implementing new features as we need them. We chose to fork Esprima instead of starting from scratch in order to move as quickly as possible with a compatible API. With Espree 2.0.0, we are no longer a fork of Esprima but rather a translation layer between Acorn and Esprima syntax. This allows us to put work back into a community-supported parser (Acorn) that is continuing to grow and evolve while maintaining an Esprima-compatible parser for those utilities still built on Esprima. ### Have you tried working with Esprima? Yes. Since the start of ESLint, we've regularly filed bugs and feature requests with Esprima and will continue to do so. However, there are some different philosophies around how the projects work that need to be worked through. The initial goal was to have Espree track Esprima and eventually merge the two back together, but we ultimately decided that building on top of Acorn was a better choice due to Acorn's plugin support. ### Why don't you just use Acorn? Acorn is a great JavaScript parser that produces an AST that is compatible with Esprima. Unfortunately, ESLint relies on more than just the AST to do its job. It relies on Esprima's tokens and comment attachment features to get a complete picture of the source code. We investigated switching to Acorn, but the inconsistencies between Esprima and Acorn created too much work for a project like ESLint. We are building on top of Acorn, however, so that we can contribute back and help make Acorn even better. ### What ECMAScript features do you support? Espree supports all ECMAScript 2020 features and partially supports ECMAScript 2021 features. Because ECMAScript 2021 is still under development, we are implementing features as they are finalized. Currently, Espree supports: * [Logical Assignment Operators](https://github.com/tc39/proposal-logical-assignment) * [Numeric Separators](https://github.com/tc39/proposal-numeric-separator) See [finished-proposals.md](https://github.com/tc39/proposals/blob/master/finished-proposals.md) to know what features are finalized. ### How do you determine which experimental features to support? In general, we do not support experimental JavaScript features. We may make exceptions from time to time depending on the maturity of the features. # axios-retry [](https://travis-ci.org/softonic/axios-retry) Axios plugin that intercepts failed requests and retries them whenever possible. ## Installation ```bash npm install axios-retry ``` ### Note Not working with `axios 0.19.0`. For details see the [bug](https://github.com/axios/axios/issues/2203). [`axios 0.19.1`](https://github.com/axios/axios/releases/tag/0.19.1) has fixed this bug. ## Usage ```js // CommonJS // const axiosRetry = require('axios-retry'); // ES6 import axiosRetry from 'axios-retry'; axiosRetry(axios, { retries: 3 }); axios.get('http://example.com/test') // The first request fails and the second returns 'ok' .then(result => { result.data; // 'ok' }); // Exponential back-off retry delay between requests axiosRetry(axios, { retryDelay: axiosRetry.exponentialDelay}); // Custom retry delay axiosRetry(axios, { retryDelay: (retryCount) => { return retryCount * 1000; }}); // Works with custom axios instances const client = axios.create({ baseURL: 'http://example.com' }); axiosRetry(client, { retries: 3 }); client.get('/test') // The first request fails and the second returns 'ok' .then(result => { result.data; // 'ok' }); // Allows request-specific configuration client .get('/test', { 'axios-retry': { retries: 0 } }) .catch(error => { // The first request fails error !== undefined }); ``` **Note:** Unless `shouldResetTimeout` is set, the plugin interprets the request timeout as a global value, so it is not used for each retry but for the whole request lifecycle. ## Options | Name | Type | Default | Description | | --- | --- | --- | --- | | retries | `Number` | `3` | The number of times to retry before failing. | | retryCondition | `Function` | `isNetworkOrIdempotentRequestError` | A callback to further control if a request should be retried. By default, it retries if it is a network error or a 5xx error on an idempotent request (GET, HEAD, OPTIONS, PUT or DELETE). | | shouldResetTimeout | `Boolean` | false | Defines if the timeout should be reset between retries | | retryDelay | `Function` | `function noDelay() { return 0; }` | A callback to further control the delay in milliseconds between retried requests. By default there is no delay between retries. Another option is exponentialDelay ([Exponential Backoff](https://developers.google.com/analytics/devguides/reporting/core/v3/errors#backoff)). The function is passed `retryCount` and `error`. | ## Testing Clone the repository and execute: ```bash npm test ``` ## Contribute 1. Fork it: `git clone https://github.com/softonic/axios-retry.git` 2. Create your feature branch: `git checkout -b feature/my-new-feature` 3. Commit your changes: `git commit -am 'Added some feature'` 4. Check the build: `npm run build` 4. Push to the branch: `git push origin my-new-feature` 5. Submit a pull request :D # lodash v4.17.21 The [Lodash](https://lodash.com/) library exported as [Node.js](https://nodejs.org/) modules. ## Installation Using npm: ```shell $ npm i -g npm $ npm i --save lodash ``` In Node.js: ```js // Load the full build. var _ = require('lodash'); // Load the core build. var _ = require('lodash/core'); // Load the FP build for immutable auto-curried iteratee-first data-last methods. var fp = require('lodash/fp'); // Load method categories. var array = require('lodash/array'); var object = require('lodash/fp/object'); // Cherry-pick methods for smaller browserify/rollup/webpack bundles. var at = require('lodash/at'); var curryN = require('lodash/fp/curryN'); ``` See the [package source](https://github.com/lodash/lodash/tree/4.17.21-npm) for more details. **Note:**<br> Install [n_](https://www.npmjs.com/package/n_) for Lodash use in the Node.js < 6 REPL. ## Support Tested in Chrome 74-75, Firefox 66-67, IE 11, Edge 18, Safari 11-12, & Node.js 8-12.<br> Automated [browser](https://saucelabs.com/u/lodash) & [CI](https://travis-ci.org/lodash/lodash/) test runs are available. # detect-libc Node.js module to detect the C standard library (libc) implementation family and version in use on a given Linux system. Provides a value suitable for use with the `LIBC` option of [prebuild](https://www.npmjs.com/package/prebuild), [prebuild-ci](https://www.npmjs.com/package/prebuild-ci) and [prebuild-install](https://www.npmjs.com/package/prebuild-install), therefore allowing build and provision of pre-compiled binaries for musl-based Linux e.g. Alpine as well as glibc-based. Currently supports libc detection of `glibc` and `musl`. ## Install ```sh npm install detect-libc ``` ## Usage ### API ```js const { GLIBC, MUSL, family, version, isNonGlibcLinux } = require('detect-libc'); ``` * `GLIBC` is a String containing the value "glibc" for comparison with `family`. * `MUSL` is a String containing the value "musl" for comparison with `family`. * `family` is a String representing the system libc family. * `version` is a String representing the system libc version number. * `isNonGlibcLinux` is a Boolean representing whether the system is a non-glibc Linux, e.g. Alpine. ### detect-libc command line tool When run on a Linux system with a non-glibc libc, the child command will be run with the `LIBC` environment variable set to the relevant value. On all other platforms will run the child command as-is. The command line feature requires `spawnSync` provided by Node v0.12+. ```sh detect-libc child-command ``` ## Integrating with prebuild ```json "scripts": { "install": "detect-libc prebuild-install || node-gyp rebuild", "test": "mocha && detect-libc prebuild-ci" }, "dependencies": { "detect-libc": "^1.0.2", "prebuild-install": "^2.2.0" }, "devDependencies": { "prebuild": "^6.2.1", "prebuild-ci": "^2.2.3" } ``` ## Licence Copyright 2017 Lovell Fuller Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at [http://www.apache.org/licenses/LICENSE-2.0](http://www.apache.org/licenses/LICENSE-2.0.html) Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. [Build]: http://img.shields.io/travis/litejs/natural-compare-lite.png [Coverage]: http://img.shields.io/coveralls/litejs/natural-compare-lite.png [1]: https://travis-ci.org/litejs/natural-compare-lite [2]: https://coveralls.io/r/litejs/natural-compare-lite [npm package]: https://npmjs.org/package/natural-compare-lite [GitHub repo]: https://github.com/litejs/natural-compare-lite @version 1.4.0 @date 2015-10-26 @stability 3 - Stable Natural Compare &ndash; [![Build][]][1] [![Coverage][]][2] =============== Compare strings containing a mix of letters and numbers in the way a human being would in sort order. This is described as a "natural ordering". ```text Standard sorting: Natural order sorting: img1.png img1.png img10.png img2.png img12.png img10.png img2.png img12.png ``` String.naturalCompare returns a number indicating whether a reference string comes before or after or is the same as the given string in sort order. Use it with builtin sort() function. ### Installation - In browser ```html <script src=min.natural-compare.js></script> ``` - In node.js: `npm install natural-compare-lite` ```javascript require("natural-compare-lite") ``` ### Usage ```javascript // Simple case sensitive example var a = ["z1.doc", "z10.doc", "z17.doc", "z2.doc", "z23.doc", "z3.doc"]; a.sort(String.naturalCompare); // ["z1.doc", "z2.doc", "z3.doc", "z10.doc", "z17.doc", "z23.doc"] // Use wrapper function for case insensitivity a.sort(function(a, b){ return String.naturalCompare(a.toLowerCase(), b.toLowerCase()); }) // In most cases we want to sort an array of objects var a = [ {"street":"350 5th Ave", "room":"A-1021"} , {"street":"350 5th Ave", "room":"A-21046-b"} ]; // sort by street, then by room a.sort(function(a, b){ return String.naturalCompare(a.street, b.street) || String.naturalCompare(a.room, b.room); }) // When text transformation is needed (eg toLowerCase()), // it is best for performance to keep // transformed key in that object. // There are no need to do text transformation // on each comparision when sorting. var a = [ {"make":"Audi", "model":"A6"} , {"make":"Kia", "model":"Rio"} ]; // sort by make, then by model a.map(function(car){ car.sort_key = (car.make + " " + car.model).toLowerCase(); }) a.sort(function(a, b){ return String.naturalCompare(a.sort_key, b.sort_key); }) ``` - Works well with dates in ISO format eg "Rev 2012-07-26.doc". ### Custom alphabet It is possible to configure a custom alphabet to achieve a desired order. ```javascript // Estonian alphabet String.alphabet = "ABDEFGHIJKLMNOPRSŠZŽTUVÕÄÖÜXYabdefghijklmnoprsšzžtuvõäöüxy" ["t", "z", "x", "õ"].sort(String.naturalCompare) // ["z", "t", "õ", "x"] // Russian alphabet String.alphabet = "АБВГДЕЁЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдеёжзийклмнопрстуфхцчшщъыьэюя" ["Ё", "А", "Б"].sort(String.naturalCompare) // ["А", "Б", "Ё"] ``` External links -------------- - [GitHub repo][https://github.com/litejs/natural-compare-lite] - [jsperf test](http://jsperf.com/natural-sort-2/12) Licence ------- Copyright (c) 2012-2015 Lauri Rooden &lt;lauri@rooden.ee&gt; [The MIT License](http://lauri.rooden.ee/mit-license.txt) # defer-to-connect > The safe way to handle the `connect` socket event [](https://coveralls.io/github/szmarczak/defer-to-connect?branch=master) Once you receive the socket, it may be already connected (or disconnected).<br> To avoid checking that, use `defer-to-connect`. It'll do that for you. ## Usage ```js const deferToConnect = require('defer-to-connect'); deferToConnect(socket, () => { console.log('Connected!'); }); ``` ## API ### deferToConnect(socket, connectListener) Calls `connectListener()` when connected. ### deferToConnect(socket, listeners) #### listeners An object representing `connect`, `secureConnect` and `close` properties. Calls `connect()` when the socket is connected.<br> Calls `secureConnect()` when the socket is securely connected.<br> Calls `close()` when the socket is destroyed. ## License MIT # which Like the unix `which` utility. Finds the first instance of a specified executable in the PATH environment variable. Does not cache the results, so `hash -r` is not needed when the PATH changes. ## USAGE ```javascript var which = require('which') // async usage which('node', function (er, resolvedPath) { // er is returned if no "node" is found on the PATH // if it is found, then the absolute path to the exec is returned }) // or promise which('node').then(resolvedPath => { ... }).catch(er => { ... not found ... }) // sync usage // throws if not found var resolved = which.sync('node') // if nothrow option is used, returns null if not found resolved = which.sync('node', {nothrow: true}) // Pass options to override the PATH and PATHEXT environment vars. which('node', { path: someOtherPath }, function (er, resolved) { if (er) throw er console.log('found at %j', resolved) }) ``` ## CLI USAGE Same as the BSD `which(1)` binary. ``` usage: which [-as] program ... ``` ## OPTIONS You may pass an options object as the second argument. - `path`: Use instead of the `PATH` environment variable. - `pathExt`: Use instead of the `PATHEXT` environment variable. - `all`: Return all matches, instead of just the first one. Note that this means the function returns an array of strings instead of a single string. bs58 ==== [](https://travis-ci.org/cryptocoinjs/bs58) JavaScript component to compute base 58 encoding. This encoding is typically used for crypto currencies such as Bitcoin. **Note:** If you're looking for **base 58 check** encoding, see: [https://github.com/bitcoinjs/bs58check](https://github.com/bitcoinjs/bs58check), which depends upon this library. Install ------- npm i --save bs58 API --- ### encode(input) `input` must be a [Buffer](https://nodejs.org/api/buffer.html) or an `Array`. It returns a `string`. **example**: ```js const bs58 = require('bs58') const bytes = Buffer.from('003c176e659bea0f29a3e9bf7880c112b1b31b4dc826268187', 'hex') const address = bs58.encode(bytes) console.log(address) // => 16UjcYNBG9GTK4uq2f7yYEbuifqCzoLMGS ``` ### decode(input) `input` must be a base 58 encoded string. Returns a [Buffer](https://nodejs.org/api/buffer.html). **example**: ```js const bs58 = require('bs58') const address = '16UjcYNBG9GTK4uq2f7yYEbuifqCzoLMGS' const bytes = bs58.decode(address) console.log(out.toString('hex')) // => 003c176e659bea0f29a3e9bf7880c112b1b31b4dc826268187 ``` Hack / Test ----------- Uses JavaScript standard style. Read more: [](https://github.com/feross/standard) Credits ------- - [Mike Hearn](https://github.com/mikehearn) for original Java implementation - [Stefan Thomas](https://github.com/justmoon) for porting to JavaScript - [Stephan Pair](https://github.com/gasteve) for buffer improvements - [Daniel Cousens](https://github.com/dcousens) for cleanup and merging improvements from bitcoinjs-lib - [Jared Deckard](https://github.com/deckar01) for killing `bigi` as a dependency License ------- MIT has-unicode =========== Try to guess if your terminal supports unicode ```javascript var hasUnicode = require("has-unicode") if (hasUnicode()) { // the terminal probably has unicode support } ``` ```javascript var hasUnicode = require("has-unicode").tryHarder hasUnicode(function(unicodeSupported) { if (unicodeSupported) { // the terminal probably has unicode support } }) ``` ## Detecting Unicode What we actually detect is UTF-8 support, as that's what Node itself supports. If you have a UTF-16 locale then you won't be detected as unicode capable. ### Windows Since at least Windows 7, `cmd` and `powershell` have been unicode capable, but unfortunately even then it's not guaranteed. In many localizations it still uses legacy code pages and there's no facility short of running programs or linking C++ that will let us detect this. As such, we report any Windows installation as NOT unicode capable, and recommend that you encourage your users to override this via config. ### Unix Like Operating Systems We look at the environment variables `LC_ALL`, `LC_CTYPE`, and `LANG` in that order. For `LC_ALL` and `LANG`, it looks for `.UTF-8` in the value. For `LC_CTYPE` it looks to see if the value is `UTF-8`. This is sufficient for most POSIX systems. While locale data can be put in `/etc/locale.conf` as well, AFAIK it's always copied into the environment. <p align="center"> <img width="250" src="https://raw.githubusercontent.com/yargs/yargs/master/yargs-logo.png"> </p> <h1 align="center"> Yargs </h1> <p align="center"> <b >Yargs be a node.js library fer hearties tryin' ter parse optstrings</b> </p> <br>  [![NPM version][npm-image]][npm-url] [![js-standard-style][standard-image]][standard-url] [![Coverage][coverage-image]][coverage-url] [![Conventional Commits][conventional-commits-image]][conventional-commits-url] [![Slack][slack-image]][slack-url] ## Description Yargs helps you build interactive command line tools, by parsing arguments and generating an elegant user interface. It gives you: * commands and (grouped) options (`my-program.js serve --port=5000`). * a dynamically generated help menu based on your arguments: ``` mocha [spec..] Run tests with Mocha Commands mocha inspect [spec..] Run tests with Mocha [default] mocha init <path> create a client-side Mocha setup at <path> Rules & Behavior --allow-uncaught Allow uncaught errors to propagate [boolean] --async-only, -A Require all tests to use a callback (async) or return a Promise [boolean] ``` * bash-completion shortcuts for commands and options. * and [tons more](/docs/api.md). ## Installation Stable version: ```bash npm i yargs ``` Bleeding edge version with the most recent features: ```bash npm i yargs@next ``` ## Usage ### Simple Example ```javascript #!/usr/bin/env node const yargs = require('yargs/yargs') const { hideBin } = require('yargs/helpers') const argv = yargs(hideBin(process.argv)).argv if (argv.ships > 3 && argv.distance < 53.5) { console.log('Plunder more riffiwobbles!') } else { console.log('Retreat from the xupptumblers!') } ``` ```bash $ ./plunder.js --ships=4 --distance=22 Plunder more riffiwobbles! $ ./plunder.js --ships 12 --distance 98.7 Retreat from the xupptumblers! ``` ### Complex Example ```javascript #!/usr/bin/env node const yargs = require('yargs/yargs') const { hideBin } = require('yargs/helpers') yargs(hideBin(process.argv)) .command('serve [port]', 'start the server', (yargs) => { yargs .positional('port', { describe: 'port to bind on', default: 5000 }) }, (argv) => { if (argv.verbose) console.info(`start server on :${argv.port}`) serve(argv.port) }) .option('verbose', { alias: 'v', type: 'boolean', description: 'Run with verbose logging' }) .argv ``` Run the example above with `--help` to see the help for the application. ## Supported Platforms ### TypeScript yargs has type definitions at [@types/yargs][type-definitions]. ``` npm i @types/yargs --save-dev ``` See usage examples in [docs](/docs/typescript.md). ### Deno As of `v16`, `yargs` supports [Deno](https://github.com/denoland/deno): ```typescript import yargs from 'https://deno.land/x/yargs/deno.ts' import { Arguments } from 'https://deno.land/x/yargs/deno-types.ts' yargs(Deno.args) .command('download <files...>', 'download a list of files', (yargs: any) => { return yargs.positional('files', { describe: 'a list of files to do something with' }) }, (argv: Arguments) => { console.info(argv) }) .strictCommands() .demandCommand(1) .argv ``` ### ESM As of `v16`,`yargs` supports ESM imports: ```js import yargs from 'yargs' import { hideBin } from 'yargs/helpers' yargs(hideBin(process.argv)) .command('curl <url>', 'fetch the contents of the URL', () => {}, (argv) => { console.info(argv) }) .demandCommand(1) .argv ``` ### Usage in Browser See examples of using yargs in the browser in [docs](/docs/browser.md). ## Community Having problems? want to contribute? join our [community slack](http://devtoolscommunity.herokuapp.com). ## Documentation ### Table of Contents * [Yargs' API](/docs/api.md) * [Examples](/docs/examples.md) * [Parsing Tricks](/docs/tricks.md) * [Stop the Parser](/docs/tricks.md#stop) * [Negating Boolean Arguments](/docs/tricks.md#negate) * [Numbers](/docs/tricks.md#numbers) * [Arrays](/docs/tricks.md#arrays) * [Objects](/docs/tricks.md#objects) * [Quotes](/docs/tricks.md#quotes) * [Advanced Topics](/docs/advanced.md) * [Composing Your App Using Commands](/docs/advanced.md#commands) * [Building Configurable CLI Apps](/docs/advanced.md#configuration) * [Customizing Yargs' Parser](/docs/advanced.md#customizing) * [Bundling yargs](/docs/bundling.md) * [Contributing](/contributing.md) ## Supported Node.js Versions Libraries in this ecosystem make a best effort to track [Node.js' release schedule](https://nodejs.org/en/about/releases/). Here's [a post on why we think this is important](https://medium.com/the-node-js-collection/maintainers-should-consider-following-node-js-release-schedule-ab08ed4de71a). [npm-url]: https://www.npmjs.com/package/yargs [npm-image]: https://img.shields.io/npm/v/yargs.svg [standard-image]: https://img.shields.io/badge/code%20style-standard-brightgreen.svg [standard-url]: http://standardjs.com/ [conventional-commits-image]: https://img.shields.io/badge/Conventional%20Commits-1.0.0-yellow.svg [conventional-commits-url]: https://conventionalcommits.org/ [slack-image]: http://devtoolscommunity.herokuapp.com/badge.svg [slack-url]: http://devtoolscommunity.herokuapp.com [type-definitions]: https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/yargs [coverage-image]: https://img.shields.io/nycrc/yargs/yargs [coverage-url]: https://github.com/yargs/yargs/blob/master/.nycrc # ieee754 [![travis][travis-image]][travis-url] [![npm][npm-image]][npm-url] [![downloads][downloads-image]][downloads-url] [![javascript style guide][standard-image]][standard-url] [travis-image]: https://img.shields.io/travis/feross/ieee754/master.svg [travis-url]: https://travis-ci.org/feross/ieee754 [npm-image]: https://img.shields.io/npm/v/ieee754.svg [npm-url]: https://npmjs.org/package/ieee754 [downloads-image]: https://img.shields.io/npm/dm/ieee754.svg [downloads-url]: https://npmjs.org/package/ieee754 [standard-image]: https://img.shields.io/badge/code_style-standard-brightgreen.svg [standard-url]: https://standardjs.com [![saucelabs][saucelabs-image]][saucelabs-url] [saucelabs-image]: https://saucelabs.com/browser-matrix/ieee754.svg [saucelabs-url]: https://saucelabs.com/u/ieee754 ### Read/write IEEE754 floating point numbers from/to a Buffer or array-like object. ## install ``` npm install ieee754 ``` ## methods `var ieee754 = require('ieee754')` The `ieee754` object has the following functions: ``` ieee754.read = function (buffer, offset, isLE, mLen, nBytes) ieee754.write = function (buffer, value, offset, isLE, mLen, nBytes) ``` The arguments mean the following: - buffer = the buffer - offset = offset into the buffer - value = value to set (only for `write`) - isLe = is little endian? - mLen = mantissa length - nBytes = number of bytes ## what is ieee754? The IEEE Standard for Floating-Point Arithmetic (IEEE 754) is a technical standard for floating-point computation. [Read more](http://en.wikipedia.org/wiki/IEEE_floating_point). ## license BSD 3 Clause. Copyright (c) 2008, Fair Oaks Labs, Inc. # v8-compile-cache [](https://travis-ci.org/zertosh/v8-compile-cache) `v8-compile-cache` attaches a `require` hook to use [V8's code cache](https://v8project.blogspot.com/2015/07/code-caching.html) to speed up instantiation time. The "code cache" is the work of parsing and compiling done by V8. The ability to tap into V8 to produce/consume this cache was introduced in [Node v5.7.0](https://nodejs.org/en/blog/release/v5.7.0/). ## Usage 1. Add the dependency: ```sh $ npm install --save v8-compile-cache ``` 2. Then, in your entry module add: ```js require('v8-compile-cache'); ``` **Requiring `v8-compile-cache` in Node <5.7.0 is a noop – but you need at least Node 4.0.0 to support the ES2015 syntax used by `v8-compile-cache`.** ## Options Set the environment variable `DISABLE_V8_COMPILE_CACHE=1` to disable the cache. Cache directory is defined by environment variable `V8_COMPILE_CACHE_CACHE_DIR` or defaults to `<os.tmpdir()>/v8-compile-cache-<V8_VERSION>`. ## Internals Cache files are suffixed `.BLOB` and `.MAP` corresponding to the entry module that required `v8-compile-cache`. The cache is _entry module specific_ because it is faster to load the entire code cache into memory at once, than it is to read it from disk on a file-by-file basis. ## Benchmarks See https://github.com/zertosh/v8-compile-cache/tree/master/bench. **Load Times:** | Module | Without Cache | With Cache | | ---------------- | -------------:| ----------:| | `babel-core` | `218ms` | `185ms` | | `yarn` | `153ms` | `113ms` | | `yarn` (bundled) | `228ms` | `105ms` | _^ Includes the overhead of loading the cache itself._ ## Acknowledgements * `FileSystemBlobStore` and `NativeCompileCache` are based on Atom's implementation of their v8 compile cache: - https://github.com/atom/atom/blob/b0d7a8a/src/file-system-blob-store.js - https://github.com/atom/atom/blob/b0d7a8a/src/native-compile-cache.js * `mkdirpSync` is based on: - https://github.com/substack/node-mkdirp/blob/f2003bb/index.js#L55-L98 # <img src="docs_app/assets/Rx_Logo_S.png" alt="RxJS Logo" width="86" height="86"> RxJS: Reactive Extensions For JavaScript [](https://circleci.com/gh/ReactiveX/rxjs/tree/6.x) [](http://badge.fury.io/js/%40reactivex%2Frxjs) [](https://gitter.im/Reactive-Extensions/RxJS?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) # RxJS 6 Stable ### MIGRATION AND RELEASE INFORMATION: Find out how to update to v6, **automatically update your TypeScript code**, and more! - [Current home is MIGRATION.md](./docs_app/content/guide/v6/migration.md) ### FOR V 5.X PLEASE GO TO [THE 5.0 BRANCH](https://github.com/ReactiveX/rxjs/tree/5.x) Reactive Extensions Library for JavaScript. This is a rewrite of [Reactive-Extensions/RxJS](https://github.com/Reactive-Extensions/RxJS) and is the latest production-ready version of RxJS. This rewrite is meant to have better performance, better modularity, better debuggable call stacks, while staying mostly backwards compatible, with some breaking changes that reduce the API surface. [Apache 2.0 License](LICENSE.txt) - [Code of Conduct](CODE_OF_CONDUCT.md) - [Contribution Guidelines](CONTRIBUTING.md) - [Maintainer Guidelines](doc_app/content/maintainer-guidelines.md) - [API Documentation](https://rxjs.dev/) ## Versions In This Repository - [master](https://github.com/ReactiveX/rxjs/commits/master) - This is all of the current, unreleased work, which is against v6 of RxJS right now - [stable](https://github.com/ReactiveX/rxjs/commits/stable) - This is the branch for the latest version you'd get if you do `npm install rxjs` ## Important By contributing or commenting on issues in this repository, whether you've read them or not, you're agreeing to the [Contributor Code of Conduct](CODE_OF_CONDUCT.md). Much like traffic laws, ignorance doesn't grant you immunity. ## Installation and Usage ### ES6 via npm ```sh npm install rxjs ``` It's recommended to pull in the Observable creation methods you need directly from `'rxjs'` as shown below with `range`. And you can pull in any operator you need from one spot, under `'rxjs/operators'`. ```ts import { range } from "rxjs"; import { map, filter } from "rxjs/operators"; range(1, 200) .pipe( filter(x => x % 2 === 1), map(x => x + x) ) .subscribe(x => console.log(x)); ``` Here, we're using the built-in `pipe` method on Observables to combine operators. See [pipeable operators](https://github.com/ReactiveX/rxjs/blob/master/doc/pipeable-operators.md) for more information. ### CommonJS via npm To install this library for CommonJS (CJS) usage, use the following command: ```sh npm install rxjs ``` (Note: destructuring available in Node 8+) ```js const { range } = require('rxjs'); const { map, filter } = require('rxjs/operators'); range(1, 200).pipe( filter(x => x % 2 === 1), map(x => x + x) ).subscribe(x => console.log(x)); ``` ### CDN For CDN, you can use [unpkg](https://unpkg.com/): https://unpkg.com/rxjs/bundles/rxjs.umd.min.js The global namespace for rxjs is `rxjs`: ```js const { range } = rxjs; const { map, filter } = rxjs.operators; range(1, 200) .pipe( filter(x => x % 2 === 1), map(x => x + x) ) .subscribe(x => console.log(x)); ``` ## Goals - Smaller overall bundles sizes - Provide better performance than preceding versions of RxJS - To model/follow the [Observable Spec Proposal](https://github.com/zenparsing/es-observable) to the observable - Provide more modular file structure in a variety of formats - Provide more debuggable call stacks than preceding versions of RxJS ## Building/Testing - `npm run build_all` - builds everything - `npm test` - runs tests - `npm run test_no_cache` - run test with `ts-node` set to false ## Performance Tests Run `npm run build_perf` or `npm run perf` to run the performance tests with `protractor`. Run `npm run perf_micro [operator]` to run micro performance test benchmarking operator. ## Adding documentation We appreciate all contributions to the documentation of any type. All of the information needed to get the docs app up and running locally as well as how to contribute can be found in the [documentation directory](./docs_app). ## Generating PNG marble diagrams The script `npm run tests2png` requires some native packages installed locally: `imagemagick`, `graphicsmagick`, and `ghostscript`. For Mac OS X with [Homebrew](http://brew.sh/): - `brew install imagemagick` - `brew install graphicsmagick` - `brew install ghostscript` - You may need to install the Ghostscript fonts manually: - Download the tarball from the [gs-fonts project](https://sourceforge.net/projects/gs-fonts) - `mkdir -p /usr/local/share/ghostscript && tar zxvf /path/to/ghostscript-fonts.tar.gz -C /usr/local/share/ghostscript` For Debian Linux: - `sudo add-apt-repository ppa:dhor/myway` - `apt-get install imagemagick` - `apt-get install graphicsmagick` - `apt-get install ghostscript` For Windows and other Operating Systems, check the download instructions here: - http://imagemagick.org - http://www.graphicsmagick.org - http://www.ghostscript.com/ Deep Extend =========== Recursive object extending. [](https://travis-ci.org/unclechu/node-deep-extend) [](https://nodei.co/npm/deep-extend/) Install ------- ```bash $ npm install deep-extend ``` Usage ----- ```javascript var deepExtend = require('deep-extend'); var obj1 = { a: 1, b: 2, d: { a: 1, b: [], c: { test1: 123, test2: 321 } }, f: 5, g: 123, i: 321, j: [1, 2] }; var obj2 = { b: 3, c: 5, d: { b: { first: 'one', second: 'two' }, c: { test2: 222 } }, e: { one: 1, two: 2 }, f: [], g: (void 0), h: /abc/g, i: null, j: [3, 4] }; deepExtend(obj1, obj2); console.log(obj1); /* { a: 1, b: 3, d: { a: 1, b: { first: 'one', second: 'two' }, c: { test1: 123, test2: 222 } }, f: [], g: undefined, c: 5, e: { one: 1, two: 2 }, h: /abc/g, i: null, j: [3, 4] } */ ``` Unit testing ------------ ```bash $ npm test ``` Changelog --------- [CHANGELOG.md](./CHANGELOG.md) Any issues? ----------- Please, report about issues [here](https://github.com/unclechu/node-deep-extend/issues). License ------- [MIT](./LICENSE) # emoji-regex [](https://travis-ci.org/mathiasbynens/emoji-regex) _emoji-regex_ offers a regular expression to match all emoji symbols (including textual representations of emoji) as per the Unicode Standard. This repository contains a script that generates this regular expression based on [the data from Unicode v12](https://github.com/mathiasbynens/unicode-12.0.0). Because of this, the regular expression can easily be updated whenever new emoji are added to the Unicode standard. ## Installation Via [npm](https://www.npmjs.com/): ```bash npm install emoji-regex ``` In [Node.js](https://nodejs.org/): ```js const emojiRegex = require('emoji-regex'); // Note: because the regular expression has the global flag set, this module // exports a function that returns the regex rather than exporting the regular // expression itself, to make it impossible to (accidentally) mutate the // original regular expression. const text = ` \u{231A}: ⌚ default emoji presentation character (Emoji_Presentation) \u{2194}\u{FE0F}: ↔️ default text presentation character rendered as emoji \u{1F469}: 👩 emoji modifier base (Emoji_Modifier_Base) \u{1F469}\u{1F3FF}: 👩🏿 emoji modifier base followed by a modifier `; const regex = emojiRegex(); let match; while (match = regex.exec(text)) { const emoji = match[0]; console.log(`Matched sequence ${ emoji } — code points: ${ [...emoji].length }`); } ``` Console output: ``` Matched sequence ⌚ — code points: 1 Matched sequence ⌚ — code points: 1 Matched sequence ↔️ — code points: 2 Matched sequence ↔️ — code points: 2 Matched sequence 👩 — code points: 1 Matched sequence 👩 — code points: 1 Matched sequence 👩🏿 — code points: 2 Matched sequence 👩🏿 — code points: 2 ``` To match emoji in their textual representation as well (i.e. emoji that are not `Emoji_Presentation` symbols and that aren’t forced to render as emoji by a variation selector), `require` the other regex: ```js const emojiRegex = require('emoji-regex/text.js'); ``` Additionally, in environments which support ES2015 Unicode escapes, you may `require` ES2015-style versions of the regexes: ```js const emojiRegex = require('emoji-regex/es2015/index.js'); const emojiRegexText = require('emoji-regex/es2015/text.js'); ``` ## Author | [](https://twitter.com/mathias "Follow @mathias on Twitter") | |---| | [Mathias Bynens](https://mathiasbynens.be/) | ## License _emoji-regex_ is available under the [MIT](https://mths.be/mit) license. # node-hid - Access USB HID devices from Node.js # [](http://npmjs.com/package/node-hid) [](https://github.com/node-hid/node-hid/actions?query=workflow%3Amacos) [](https://github.com/node-hid/node-hid/actions?query=workflow%3Awindows) [](https://github.com/node-hid/node-hid/actions?query=workflow%3Alinux) * [node-hid - Access USB HID devices from Node.js](#node-hid---access-usb-hid-devices-from-nodejs) * [Platform Support](#platform-support) * [Supported Platforms](#supported-platforms) * [Supported Node versions](#supported-node-versions) * [Supported Electron versions](#supported-electron-versions) * [Installation](#installation) * [Installation Special Cases](#installation-special-cases) * [Examples](#examples) * [Usage](#usage) * [List all HID devices connected](#list-all-hid-devices-connected) * [Cost of HID.devices() and <code>new HID.HID()</code> for detecting device plug/unplug](#cost-of-hiddevices-and-new-hidhid-for-detecting-device-plugunplug) * [Opening a device](#opening-a-device) * [Picking a device from the device list](#picking-a-device-from-the-device-list) * [Reading from a device](#reading-from-a-device) * [Writing to a device](#writing-to-a-device) * [Complete API](#complete-api) * [devices = HID.devices()](#devices--hiddevices) * [HID.setDriverType(type)](#hidsetdrivertypetype) * [device = new HID.HID(path)](#device--new-hidhidpath) * [device = new HID.HID(vid,pid)](#device--new-hidhidvidpid) * [device.on('data', function(data) {} )](#deviceondata-functiondata--) * [device.on('error, function(error) {} )](#deviceonerror-functionerror--) * [device.write(data)](#devicewritedata) * [device.close()](#deviceclose) * [device.pause()](#devicepause) * [device.resume()](#deviceresume) * [device.read(callback)](#devicereadcallback) * [device.readSync()](#devicereadsync) * [device.readTimeout(time_out)](#devicereadtimeouttime_out) * [device.sendFeatureReport(data)](#devicesendfeaturereportdata) * [device.getFeatureReport(report_id, report_length)](#devicegetfeaturereportreport_id-report_length) * [device.setNonBlocking(no_block)](#devicesetnonblockingno_block) * [General notes:](#general-notes) * [Thread safety, Worker threads, Context-aware modules](#thread-safety-worker-threads-context-aware-modules) * [Keyboards and Mice](#keyboards-and-mice) * [Mac notes](#mac-notes) * [Windows notes](#windows-notes) * [Xbox 360 Controller on Windows 10](#xbox-360-controller-on-windows-10) * [Linux notes](#linux-notes) * [Selecting driver type](#selecting-driver-type) * [udev device permissions](#udev-device-permissions) * [Compiling from source](#compiling-from-source) * [Linux (kernel 2.6 ) : (install examples shown for Debian/Ubuntu)](#linux-kernel-26--install-examples-shown-for-debianubuntu) * [FreeBSD](#freebsd) * [Mac OS X 10.8 ](#mac-os-x-108) * [Windows 7, 8, 10](#windows-7-8-10) * [Building node-hid from source, for your projects](#building-node-hid-from-source-for-your-projects) * [Build node-hid for <code>node-hid</code> development](#build-node-hid-for-node-hid-development) * [Building node-hid for cross-compiling](#building-node-hid-for-cross-compiling) * [Electron projects using node-hid](#electron-projects-using-node-hid) * [NW.js projects using node-hid](#nwjs-projects-using-node-hid) * [Support](#support) ## Platform Support `node-hid` supports Node.js v6 and upwards. For versions before that, you will need to build from source. The platforms, architectures and node versions `node-hid` supports are the following. In general we try to provide pre-built native library binaries for the most common platforms, Node and Electron versions. We strive to make `node-hid` cross-platform so there's a good chance any combination not listed here will compile and work. ### Supported Platforms ### - Windows x86 (32-bit) (¹) - Windows x64 (64-bit) - Mac OSX 10.9+ - Linux x64 (²) - Linux x86 (¹) - Linux ARM / Raspberry Pi (¹) - Linux MIPSel (¹) - Linux PPC64 (¹) ¹ prebuilt-binaries not provided for these platforms ² prebuilt binary built on Ubuntu 18.04 x64 ### Supported Node versions ### * Node v8 to * Node v14 ### Supported Electron versions ### * Electron v3 to * Electron v11 #### Any newer version of Electron or Node MAY NOT WORK Native modules like `node-hid` require upstream dependencies to be updated to work with newer Node and Electron versions. Unless you need the features in the most recent Electron or Node, use a supported version. ## Installation For most "standard" use cases (node v4.x on mac, linux, windows on a x86 or x64 processor), `node-hid` will install like a standard npm package: ``` npm install node-hid ``` If you install globally, the test program `src/show-devices.js` is installed as `hid-showdevices`. On Linux you can use it to try the difference between `hidraw` and `libusb` driverTypes: ``` $ npm install -g node-hid $ hid-showdevices libusb $ hid-showdevices hidraw ``` ### Installation Special Cases We are using [prebuild](https://github.com/mafintosh/prebuild) to compile and post binaries of the library for most common use cases (Linux, MacOS, Windows on standard processor platforms). If a prebuild is not available, `node-hid` will work, but `npm install node-hid` will compile the binary when you install. For more details on compiler setup, see [Compling from source](#compiling-from-source) below. ## Examples In the `src/` directory, various JavaScript programs can be found that talk to specific devices in some way. Some interesting ones: - [`show-devices.js`](./src/show-devices.js) - display all HID devices in the system - [`test-ps3-rumbleled.js`](./src/test-ps3-rumbleled.js) - Read PS3 joystick and control its LED & rumblers - [`test-powermate.js`](./src/test-powermate.js) - Read Griffin PowerMate knob and change its LED - [`test-blink1.js`](./src/test-blink1.js) - Fade colors on blink(1) RGB LED - [`test-bigredbutton.js`](./src/test-bigredbutton.js) - Read Dreamcheeky Big Red Button - [`test-teensyrawhid.js`](./src/test-teensyrawhid.js) - Read/write Teensy running RawHID "Basic" Arduino sketch To try them out, run them with `node src/showdevices.js` from within the node-hid directory. ---- ## Usage ### List all HID devices connected ```js var HID = require('node-hid'); var devices = HID.devices(); ``` `devices` will contain an array of objects, one for each HID device available. Of particular interest are the `vendorId` and `productId`, as they uniquely identify a device, and the `path`, which is needed to open a particular device. Sample output: ```js HID.devices(); { vendorId: 10168, productId: 493, path: 'IOService:/AppleACPIPl...HIDDevice@14210000,0', serialNumber: '20002E8C', manufacturer: 'ThingM', product: 'blink(1) mk2', release: 2, interface: -1, usagePage: 65280, usage: 1 }, { vendorId: 1452, productId: 610, path: 'IOService:/AppleACPIPl...Keyboard@14400000,0', serialNumber: '', manufacturer: 'Apple Inc.', product: 'Apple Internal Keyboard / Trackpad', release: 549, interface: -1, usagePage: 1, usage: 6 }, <and more> ``` #### Cost of `HID.devices()` and `new HID.HID()` for detecting device plug/unplug Both `HID.devices()` and `new HID.HID()` are relatively costly, each causing a USB (and potentially Bluetooth) enumeration. This takes time and OS resources. Doing either can slow down the read/write that you do in parallel with a device, and cause other USB devices to slow down too. This is how USB works. If you are polling `HID.devices()` or doing repeated `new HID.HID(vid,pid)` to detect device plug / unplug, consider instead using [node-usb-detection](https://github.com/MadLittleMods/node-usb-detection). `node-usb-detection` uses OS-specific, non-bus enumeration ways to detect device plug / unplug. ### Opening a device Before a device can be read from or written to, it must be opened. The `path` can be determined by a prior HID.devices() call. Use either the `path` from the list returned by a prior call to `HID.devices()`: ```js var device = new HID.HID(path); ``` or open the first device matching a VID/PID pair: ```js var device = new HID.HID(vid,pid); ``` The `device` variable will contain a handle to the device. If an error occurs opening the device, an exception will be thrown. A `node-hid` device is an `EventEmitter`. While it shares some method names and usage patterns with `Readable` and `Writable` streams, it is not a stream and the semantics vary. For example, `device.write` does not take encoding or callback args and `device.pause` does not do the same thing as `readable.pause`. There is also no `pipe` method. ### Picking a device from the device list If you need to filter down the `HID.devices()` list, you can use standard Javascript array techniques: ```js var devices = HID.devices(); var deviceInfo = devices.find( function(d) { var isTeensy = d.vendorId===0x16C0 && d.productId===0x0486; return isTeensy && d.usagePage===0xFFAB && d.usage===0x200; }); if( deviceInfo ) { var device = new HID.HID( deviceInfo.path ); // ... use device } ``` ### Reading from a device To receive FEATURE reports, use `device.getFeatureReport()`. To receive INPUT reports, use `device.on("data",...)`. A `node-hid` device is an EventEmitter. Reading from a device is performed by registering a "data" event handler: ```js device.on("data", function(data) {}); ``` You can also listen for errors like this: ```js device.on("error", function(err) {}); ``` For FEATURE reports: ```js var buf = device.getFeatureReport(reportId, reportLength) ``` Notes: - Reads via `device.on("data")` are asynchronous - Reads via `device.getFeatureReport()` are synchronous - To remove an event handler, close the device with `device.close()` - When there is not yet a data handler or no data handler exists, data is not read at all -- there is no buffer. ### Writing to a device To send FEATURE reports, use `device.sendFeatureReport()`. To send OUTPUT reports, use `device.write()`. All writing is synchronous. The ReportId is the first byte of the array sent to `device.sendFeatureReport()` or `device.write()`, meaning the array should be one byte bigger than your report. If your device does NOT use numbered reports, set the first byte of the 0x00. ```js device.write([0x00, 0x01, 0x01, 0x05, 0xff, 0xff]); ``` ```js device.sendFeatureReport( [0x01, 'c', 0, 0xff,0x33,0x00, 70,0, 0] ); ``` Notes: - You must send the exact number of bytes for your chosen OUTPUT or FEATURE report. - Both `device.write()` and `device.sendFeatureReport()` return number of bytes written + 1. - For devices using Report Ids, the first byte of the array to `write()` or `sendFeatureReport()` must be the Report Id. ## Complete API ### `devices = HID.devices()` - Return array listing all connected HID devices ### `HID.setDriverType(type)` - Linux only - Sets underlying HID driver type - `type` can be `"hidraw"` or `"libusb"`, defaults to `"hidraw"` ### `device = new HID.HID(path)` - Open a HID device at the specified platform-specific path ### `device = new HID.HID(vid,pid)` - Open first HID device with specific VendorId and ProductId ### `device.on('data', function(data) {} )` - `data` - Buffer - the data read from the device ### `device.on('error, function(error) {} )` - `error` - The error Object emitted ### `device.write(data)` - `data` - the data to be synchronously written to the device, first byte is Report Id or 0x00 if not using numbered reports. - Returns number of bytes actually written ### `device.close()` - Closes the device. Subsequent reads will raise an error. ### `device.pause()` - Pauses reading and the emission of `data` events. This means the underlying device is _silenced_ until resumption -- it is not like pausing a stream, where data continues to accumulate. ### `device.resume()` - This method will cause the HID device to resume emmitting `data` events. If no listeners are registered for the `data` event, data will be lost. - When a `data` event is registered for this HID device, this method will be automatically called. ### `device.read(callback)` - Low-level function call to initiate an asynchronous read from the device. - `callback` is of the form `callback(err, data)` ### `device.readSync()` - Return an array of numbers data. If an error occurs, an exception will be thrown. ### `device.readTimeout(time_out)` - `time_out` - timeout in milliseconds - Return an array of numbers data. If an error occurs, an exception will be thrown. ### `device.sendFeatureReport(data)` - `data` - data of HID feature report, with 0th byte being report_id (`[report_id,...]`) - Returns number of bytes actually written ### `device.getFeatureReport(report_id, report_length)` - `report_id` - HID feature report id to get - `report_length` - length of report ### `device.setNonBlocking(no_block)` - `no_block` - boolean. Set to `true` to enable non-blocking reads - exactly mirrors `hid_set_nonblocking()` in [`hidapi`](https://github.com/libusb/hidapi) ----- ## General notes: ### Thread safety, Worker threads, Context-aware modules In general `node-hid` is not thread-safe because the underlying C-library it wraps (`hidapi`) is not thread-safe. However, `node-hid` is now reporting as minimally Context Aware to allow use in Electron v9+. Until `node-hid` (or `hidapi`) is rewritten to be thread-safe, please constrain all accesses to it via a single thread. ### Keyboards and Mice Most OSes will prevent USB HID keyboards or mice, or devices that appear as a keyboard to the OS. This includes many RFID scanners, barcode readers, USB HID scales, and many other devices. This is a security precaution. Otherwise, it would be trivial to build keyloggers. There are non-standard work-arounds for this, but in general you cannot use `node-hid` to access keyboard-like devices. ## Mac notes See General notes above Keyboards ## Windows notes See General notes above about Keyboards ### Xbox 360 Controller on Windows 10 For reasons similar to mice & keyboards it appears you can't access this controller on Windows 10. ## Linux notes See General notes above about Keyboards ### udev device permissions Most Linux distros use `udev` to manage access to physical devices, and USB HID devices are normally owned by the `root` user. To allow non-root access, you must create a udev rule for the device, based on the devices vendorId and productId. This rule is a text file placed in `/etc/udev/rules.d`. For an example HID device (say a blink(1) light with vendorId = 0x27b8 and productId = 0x01ed, the rules file to support both `hidraw` and `libusb` would look like: ``` SUBSYSTEM=="input", GROUP="input", MODE="0666" SUBSYSTEM=="usb", ATTRS{idVendor}=="27b8", ATTRS{idProduct}=="01ed", MODE:="666", GROUP="plugdev" KERNEL=="hidraw*", ATTRS{idVendor}=="27b8", ATTRS{idProduct}=="01ed", MODE="0666", GROUP="plugdev" ``` Note that the values for idVendor and idProduct must be in hex and lower-case. Save this file as `/etc/udev/rules.d/51-blink1.rules`, unplug the HID device, and reload the rules with: ``` sudo udevadm control --reload-rules ``` For a complete example, see the [blink1 udev rules](https://github.com/todbot/blink1/blob/master/linux/51-blink1.rules). ### Selecting driver type By default as of `node-hid@0.7.0`, the [hidraw](https://www.kernel.org/doc/Documentation/hid/hidraw.txt) driver is used to talk to HID devices. Before `node-hid@0.7.0`, the more older but less capable [libusb](http://libusb.info/) driver was used. With `hidraw` Linux apps can now see `usage` and `usagePage` attributes of devices. If you would still like to use the `libusb` driver, then you can do either: During runtime, you can use `HID.setDriverType('libusb')` immediately after require()-ing `node-hid`: ```js var HID = require('node-hid'); HID.setDriverType('libusb'); ``` If you must have the libusb version and cannot use `setDriverType()`, you can install older node-hid or build from source: ``` npm install node-hid@0.5.7 ``` or: ``` npm install node-hid --build-from-source --driver=libusb ``` ## Compiling from source To compile & develop locally or if `prebuild` cannot download a pre-built binary for you, you will need the following compiler tools and libraries: ### Linux (kernel 2.6+) : (install examples shown for Debian/Ubuntu) * Compilation tools: `apt install build-essential git` * gcc-4.8+: `apt install gcc-4.8 g++-4.8 && export CXX=g++-4.8` * libusb-1.0-0 w/headers:`apt install libusb-1.0-0 libusb-1.0-0-dev` * libudev-dev: `apt install libudev-dev` (Debian/Ubuntu) / `yum install libusbx-devel` (Fedora) ### FreeBSD * Compilation tools: `pkg install git gcc gmake libiconv node npm` ### Mac OS X 10.8+ * [Xcode](https://itunes.apple.com/us/app/xcode/id497799835?mt=12) ### Windows 7, 8, 10 * Visual C++ compiler and Python 2.7 * either: * `npm install --global windows-build-tools` * add `%USERPROFILE%\.windows-build-tools\python27` to `PATH`, like PowerShell: `$env:Path += ";$env:USERPROFILE\.windows-build-tools\python27"` * or: * [Python 2.7](https://www.python.org/downloads/windows/) * [Visual Studio Express 2013 for Desktop](https://www.visualstudio.com/downloads/download-visual-studio-vs#d-2013-express) ### Building `node-hid` from source, for your projects ``` npm install node-hid --build-from-source ``` ### Build `node-hid` for `node-hid` development * check out a copy of this repo * change into its directory * update the submodules * build the node package For example: ``` git clone https://github.com/node-hid/node-hid.git cd node-hid # must change into node-hid directory npm install -g rimraf # just so it doesn't get 'clean'ed npm run prepublishOnly # get the needed hidapi submodule npm install --build-from-source # rebuilds the module with C code npm run showdevices # list connected HID devices node ./src/show-devices.js # same as above ``` You may see some warnings from the C compiler as it compiles [hidapi](https://github.com/libusb/hidapi) (the underlying C library `node-hid` uses). This is expected. For ease of development, there are also the scripts: ``` npm run gypclean # "node-gyp clean" clean gyp build directory npm run gypconfigure # "node-gyp configure" configure makefiles npm run gypbuild # "node-gyp build" build native code ``` ### Building `node-hid` for cross-compiling When cross-compiling you need to override `node-hid`'s normal behavior of using Linux `pkg-config` to determine CLFAGS and LDFLAGS for `libusb`. To do this, you can use the `node-gyp` variable `node_hid_no_pkg_config` and then invoke a `node-hid` rebuild with either: ``` node-gyp rebuild --node_hid_no_pkg_config=1 ``` or ``` npm gyprebuild --node_hid_no_pkg_config=1 ``` ## Electron projects using `node-hid` In your electron project, add `electron-rebuild` to your `devDependencies`. Then in your package.json `scripts` add: ``` "postinstall": "electron-rebuild" ``` This will cause `npm` to rebuild `node-hid` for the version of Node that is in Electron. If you get an error similar to `The module "HID.node" was compiled against a different version of Node.js` then `electron-rebuild` hasn't been run and Electron is trying to use `node-hid` compiled for Node.js and not for Electron. If using `node-hid` with `webpack` or similar bundler, you may need to exclude `node-hid` and other libraries with native code. In webpack, you say which `externals` you have in your `webpack-config.js`: ``` externals: { "node-hid": 'commonjs node-hid' } ``` Examples of `node-hid` in Electron: * [electron-hid-test](https://github.com/todbot/electron-hid-test) - Simple example of using `node-hid`, should track latest Electron release * [electron-hid-toy](https://github.com/todbot/electron-hid-toy) - Simple example of using `node-hid`, showing packaging and signing * [Blink1Control2](https://github.com/todbot/Blink1Control2/) - a complete application, using webpack (e.g. see its [webpack-config.js](https://github.com/todbot/Blink1Control2/blob/master/webpack.config.js)) ## NW.js projects using `node-hid` Without knowing much about NW.js, a quick hacky solution that works is: ``` cd my-nwjs-app npm install node-hid --save npm install -g nw-gyp cd node_modules/node-hid nw-gyp rebuild --target=0.42.3 --arch=x64 // or whatever NW.js version you have cd ../.. nwjs . ``` ## Support Please use the [node-hid github issues page](https://github.com/node-hid/node-hid/issues) for support questions and issues. # lodash.isstring v4.0.1 The [lodash](https://lodash.com/) method `_.isString` exported as a [Node.js](https://nodejs.org/) module. ## Installation Using npm: ```bash $ {sudo -H} npm i -g npm $ npm i --save lodash.isstring ``` In Node.js: ```js var isString = require('lodash.isstring'); ``` See the [documentation](https://lodash.com/docs#isString) or [package source](https://github.com/lodash/lodash/blob/4.0.1-npm-packages/lodash.isstring) for more details. # Near Bindings Generator Transforms the Assembyscript AST to serialize exported functions and add `encode` and `decode` functions for generating and parsing JSON strings. ## Using via CLI After installling, `npm install nearprotocol/near-bindgen-as`, it can be added to the cli arguments of the assemblyscript compiler you must add the following: ```bash asc <file> --transform near-bindgen-as ... ``` This module also adds a binary `near-asc` which adds the default arguments required to build near contracts as well as the transformer. ```bash near-asc <input file> <output file> ``` ## Using a script to compile Another way is to add a file such as `asconfig.js` such as: ```js const compile = require("near-bindgen-as/compiler").compile; compile("assembly/index.ts", // input file "out/index.wasm", // output file [ // "-O1", // Optional arguments "--debug", "--measure" ], // Prints out the final cli arguments passed to compiler. {verbose: true} ); ``` It can then be built with `node asconfig.js`. There is an example of this in the test directory. randombytes === [](https://www.npmjs.org/package/randombytes) [](https://travis-ci.org/crypto-browserify/randombytes) randombytes from node that works in the browser. In node you just get crypto.randomBytes, but in the browser it uses .crypto/msCrypto.getRandomValues ```js var randomBytes = require('randombytes'); randomBytes(16);//get 16 random bytes randomBytes(16, function (err, resp) { // resp is 16 random bytes }); ``` ## Timezone support In order to provide support for timezones, without relying on the JavaScript host or any other time-zone aware environment, this library makes use of teh IANA Timezone Database directly: https://www.iana.org/time-zones The database files are parsed by the scripts in this folder, which emit AssemblyScript code which is used to process the various rules at runtime. # string_decoder ***Node-core v8.9.4 string_decoder for userland*** [](https://nodei.co/npm/string_decoder/) [](https://nodei.co/npm/string_decoder/) ```bash npm install --save string_decoder ``` ***Node-core string_decoder for userland*** This package is a mirror of the string_decoder implementation in Node-core. Full documentation may be found on the [Node.js website](https://nodejs.org/dist/v8.9.4/docs/api/). As of version 1.0.0 **string_decoder** uses semantic versioning. ## Previous versions Previous version numbers match the versions found in Node core, e.g. 0.10.24 matches Node 0.10.24, likewise 0.11.10 matches Node 0.11.10. ## Update The *build/* directory contains a build script that will scrape the source from the [nodejs/node](https://github.com/nodejs/node) repo given a specific Node version. ## Streams Working Group `string_decoder` is maintained by the Streams Working Group, which oversees the development and maintenance of the Streams API within Node.js. The responsibilities of the Streams Working Group include: * Addressing stream issues on the Node.js issue tracker. * Authoring and editing stream documentation within the Node.js project. * Reviewing changes to stream subclasses within the Node.js project. * Redirecting changes to streams from the Node.js project to this project. * Assisting in the implementation of stream providers within Node.js. * Recommending versions of `readable-stream` to be included in Node.js. * Messaging about the future of streams to give the community advance notice of changes. See [readable-stream](https://github.com/nodejs/readable-stream) for more details. # universal-url [![NPM Version][npm-image]][npm-url] [![Build Status][travis-image]][travis-url] [![Dependency Monitor][greenkeeper-image]][greenkeeper-url] > WHATWG [`URL`](https://developer.mozilla.org/en/docs/Web/API/URL) for Node & Browser. * For Node.js versions `>= 8`, the native implementation will be used. * For Node.js versions `< 8`, a [shim](https://npmjs.com/whatwg-url) will be used. * For web browsers without a native implementation, the same shim will be used. ## Installation [Node.js](http://nodejs.org/) `>= 6` is required. To install, type this at the command line: ```shell npm install universal-url ``` ## Usage ```js const {URL, URLSearchParams} = require('universal-url'); const url = new URL('http://domain/'); const params = new URLSearchParams('?param=value'); ``` Global shim: ```js require('universal-url').shim(); const url = new URL('http://domain/'); const params = new URLSearchParams('?param=value'); ``` ## Browserify/etc The bundled file size of this library can be large for a web browser. If this is a problem, try using [universal-url-lite](https://npmjs.com/universal-url-lite) in your build as an alias for this module. [npm-image]: https://img.shields.io/npm/v/universal-url.svg [npm-url]: https://npmjs.org/package/universal-url [travis-image]: https://img.shields.io/travis/stevenvachon/universal-url.svg [travis-url]: https://travis-ci.org/stevenvachon/universal-url [greenkeeper-image]: https://badges.greenkeeper.io/stevenvachon/universal-url.svg [greenkeeper-url]: https://greenkeeper.io/ # axios // adapters The modules under `adapters/` are modules that handle dispatching a request and settling a returned `Promise` once a response is received. ## Example ```js var settle = require('./../core/settle'); module.exports = function myAdapter(config) { // At this point: // - config has been merged with defaults // - request transformers have already run // - request interceptors have already run // Make the request using config provided // Upon response settle the Promise return new Promise(function(resolve, reject) { var response = { data: responseData, status: request.status, statusText: request.statusText, headers: responseHeaders, config: config, request: request }; settle(resolve, reject, response); // From here: // - response transformers will run // - response interceptors will run }); } ``` # napi-build-utils [](https://www.npmjs.com/package/napi-build-utils)  [](https://travis-ci.org/inspiredware/napi-build-utils) [](http://standardjs.com/) [](https://opensource.org/licenses/MIT) A set of utilities to assist developers of tools that build [N-API](https://nodejs.org/api/n-api.html#n_api_n_api) native add-ons. ## Background This module is targeted to developers creating tools that build N-API native add-ons. It implements a set of functions that aid in determining the N-API version supported by the currently running Node instance and the set of N-API versions against which the N-API native add-on is designed to be built. Other functions determine whether a particular N-API version can be built and can issue console warnings for unsupported N-API versions. Unlike the modules this code is designed to facilitate building, this module is written entirely in JavaScript. ## Quick start ```bash $ npm install napi-build-utils ``` The module exports a set of functions documented [here](./index.md). For example: ```javascript var napiBuildUtils = require('napi-build-utils'); var napiVersion = napiBuildUtils.getNapiVersion(); // N-API version supported by Node, or undefined. ``` ## Declaring supported N-API versions Native modules that are designed to work with [N-API](https://nodejs.org/api/n-api.html#n_api_n_api) must explicitly declare the N-API version(s) against which they are coded to build. This is accomplished by including a `binary.napi_versions` property in the module's `package.json` file. For example: ```json "binary": { "napi_versions": [2,3] } ``` In the absence of a need to compile against a specific N-API version, the value `3` is a good choice as this is the N-API version that was supported when N-API left experimental status. Modules that are built against a specific N-API version will continue to operate indefinitely, even as later versions of N-API are introduced. ## Support If you run into problems or limitations, please file an issue and we'll take a look. Pull requests are also welcome. ## Follow Redirects Drop-in replacement for Nodes `http` and `https` that automatically follows redirects. [](https://www.npmjs.com/package/follow-redirects) [](https://travis-ci.org/follow-redirects/follow-redirects) [](https://coveralls.io/r/follow-redirects/follow-redirects?branch=master) [](https://david-dm.org/follow-redirects/follow-redirects) [](https://www.npmjs.com/package/follow-redirects) `follow-redirects` provides [request](https://nodejs.org/api/http.html#http_http_request_options_callback) and [get](https://nodejs.org/api/http.html#http_http_get_options_callback) methods that behave identically to those found on the native [http](https://nodejs.org/api/http.html#http_http_request_options_callback) and [https](https://nodejs.org/api/https.html#https_https_request_options_callback) modules, with the exception that they will seamlessly follow redirects. ```javascript var http = require('follow-redirects').http; var https = require('follow-redirects').https; http.get('http://bit.ly/900913', function (response) { response.on('data', function (chunk) { console.log(chunk); }); }).on('error', function (err) { console.error(err); }); ``` You can inspect the final redirected URL through the `responseUrl` property on the `response`. If no redirection happened, `responseUrl` is the original request URL. ```javascript https.request({ host: 'bitly.com', path: '/UHfDGO', }, function (response) { console.log(response.responseUrl); // 'http://duckduckgo.com/robots.txt' }); ``` ## Options ### Global options Global options are set directly on the `follow-redirects` module: ```javascript var followRedirects = require('follow-redirects'); followRedirects.maxRedirects = 10; followRedirects.maxBodyLength = 20 * 1024 * 1024; // 20 MB ``` The following global options are supported: - `maxRedirects` (default: `21`) – sets the maximum number of allowed redirects; if exceeded, an error will be emitted. - `maxBodyLength` (default: 10MB) – sets the maximum size of the request body; if exceeded, an error will be emitted. ### Per-request options Per-request options are set by passing an `options` object: ```javascript var url = require('url'); var followRedirects = require('follow-redirects'); var options = url.parse('http://bit.ly/900913'); options.maxRedirects = 10; http.request(options); ``` In addition to the [standard HTTP](https://nodejs.org/api/http.html#http_http_request_options_callback) and [HTTPS options](https://nodejs.org/api/https.html#https_https_request_options_callback), the following per-request options are supported: - `followRedirects` (default: `true`) – whether redirects should be followed. - `maxRedirects` (default: `21`) – sets the maximum number of allowed redirects; if exceeded, an error will be emitted. - `maxBodyLength` (default: 10MB) – sets the maximum size of the request body; if exceeded, an error will be emitted. - `agents` (default: `undefined`) – sets the `agent` option per protocol, since HTTP and HTTPS use different agents. Example value: `{ http: new http.Agent(), https: new https.Agent() }` - `trackRedirects` (default: `false`) – whether to store the redirected response details into the `redirects` array on the response object. ### Advanced usage By default, `follow-redirects` will use the Node.js default implementations of [`http`](https://nodejs.org/api/http.html) and [`https`](https://nodejs.org/api/https.html). To enable features such as caching and/or intermediate request tracking, you might instead want to wrap `follow-redirects` around custom protocol implementations: ```javascript var followRedirects = require('follow-redirects').wrap({ http: require('your-custom-http'), https: require('your-custom-https'), }); ``` Such custom protocols only need an implementation of the `request` method. ## Browserify Usage Due to the way `XMLHttpRequest` works, the `browserify` versions of `http` and `https` already follow redirects. If you are *only* targeting the browser, then this library has little value for you. If you want to write cross platform code for node and the browser, `follow-redirects` provides a great solution for making the native node modules behave the same as they do in browserified builds in the browser. To avoid bundling unnecessary code you should tell browserify to swap out `follow-redirects` with the standard modules when bundling. To make this easier, you need to change how you require the modules: ```javascript var http = require('follow-redirects/http'); var https = require('follow-redirects/https'); ``` You can then replace `follow-redirects` in your browserify configuration like so: ```javascript "browser": { "follow-redirects/http" : "http", "follow-redirects/https" : "https" } ``` The `browserify-http` module has not kept pace with node development, and no long behaves identically to the native module when running in the browser. If you are experiencing problems, you may want to check out [browserify-http-2](https://www.npmjs.com/package/http-browserify-2). It is more actively maintained and attempts to address a few of the shortcomings of `browserify-http`. In that case, your browserify config should look something like this: ```javascript "browser": { "follow-redirects/http" : "browserify-http-2/http", "follow-redirects/https" : "browserify-http-2/https" } ``` ## Contributing Pull Requests are always welcome. Please [file an issue](https://github.com/follow-redirects/follow-redirects/issues) detailing your proposal before you invest your valuable time. Additional features and bug fixes should be accompanied by tests. You can run the test suite locally with a simple `npm test` command. ## Debug Logging `follow-redirects` uses the excellent [debug](https://www.npmjs.com/package/debug) for logging. To turn on logging set the environment variable `DEBUG=follow-redirects` for debug output from just this module. When running the test suite it is sometimes advantageous to set `DEBUG=*` to see output from the express server as well. ## Authors - Olivier Lalonde (olalonde@gmail.com) - James Talmage (james@talmage.io) - [Ruben Verborgh](https://ruben.verborgh.org/) ## License [https://github.com/follow-redirects/follow-redirects/blob/master/LICENSE](MIT License) are-we-there-yet ---------------- Track complex hiearchies of asynchronous task completion statuses. This is intended to give you a way of recording and reporting the progress of the big recursive fan-out and gather type workflows that are so common in async. What you do with this completion data is up to you, but the most common use case is to feed it to one of the many progress bar modules. Most progress bar modules include a rudamentary version of this, but my needs were more complex. Usage ===== ```javascript var TrackerGroup = require("are-we-there-yet").TrackerGroup var top = new TrackerGroup("program") var single = top.newItem("one thing", 100) single.completeWork(20) console.log(top.completed()) // 0.2 fs.stat("file", function(er, stat) { if (er) throw er var stream = top.newStream("file", stat.size) console.log(top.completed()) // now 0.1 as single is 50% of the job and is 20% complete // and 50% * 20% == 10% fs.createReadStream("file").pipe(stream).on("data", function (chunk) { // do stuff with chunk }) top.on("change", function (name) { // called each time a chunk is read from "file" // top.completed() will start at 0.1 and fill up to 0.6 as the file is read }) }) ``` Shared Methods ============== * var completed = tracker.completed() Implemented in: `Tracker`, `TrackerGroup`, `TrackerStream` Returns the ratio of completed work to work to be done. Range of 0 to 1. * tracker.finish() Implemented in: `Tracker`, `TrackerGroup` Marks the tracker as completed. With a TrackerGroup this marks all of its components as completed. Marks all of the components of this tracker as finished, which in turn means that `tracker.completed()` for this will now be 1. This will result in one or more `change` events being emitted. Events ====== All tracker objects emit `change` events with the following arguments: ``` function (name, completed, tracker) ``` `name` is the name of the tracker that originally emitted the event, or if it didn't have one, the first containing tracker group that had one. `completed` is the percent complete (as returned by `tracker.completed()` method). `tracker` is the tracker object that you are listening for events on. TrackerGroup ============ * var tracker = new TrackerGroup(**name**) * **name** *(optional)* - The name of this tracker group, used in change notifications if the component updating didn't have a name. Defaults to undefined. Creates a new empty tracker aggregation group. These are trackers whose completion status is determined by the completion status of other trackers. * tracker.addUnit(**otherTracker**, **weight**) * **otherTracker** - Any of the other are-we-there-yet tracker objects * **weight** *(optional)* - The weight to give the tracker, defaults to 1. Adds the **otherTracker** to this aggregation group. The weight determines how long you expect this tracker to take to complete in proportion to other units. So for instance, if you add one tracker with a weight of 1 and another with a weight of 2, you're saying the second will take twice as long to complete as the first. As such, the first will account for 33% of the completion of this tracker and the second will account for the other 67%. Returns **otherTracker**. * var subGroup = tracker.newGroup(**name**, **weight**) The above is exactly equivalent to: ```javascript var subGroup = tracker.addUnit(new TrackerGroup(name), weight) ``` * var subItem = tracker.newItem(**name**, **todo**, **weight**) The above is exactly equivalent to: ```javascript var subItem = tracker.addUnit(new Tracker(name, todo), weight) ``` * var subStream = tracker.newStream(**name**, **todo**, **weight**) The above is exactly equivalent to: ```javascript var subStream = tracker.addUnit(new TrackerStream(name, todo), weight) ``` * console.log( tracker.debug() ) Returns a tree showing the completion of this tracker group and all of its children, including recursively entering all of the children. Tracker ======= * var tracker = new Tracker(**name**, **todo**) * **name** *(optional)* The name of this counter to report in change events. Defaults to undefined. * **todo** *(optional)* The amount of work todo (a number). Defaults to 0. Ordinarily these are constructed as a part of a tracker group (via `newItem`). * var completed = tracker.completed() Returns the ratio of completed work to work to be done. Range of 0 to 1. If total work to be done is 0 then it will return 0. * tracker.addWork(**todo**) * **todo** A number to add to the amount of work to be done. Increases the amount of work to be done, thus decreasing the completion percentage. Triggers a `change` event. * tracker.completeWork(**completed**) * **completed** A number to add to the work complete Increase the amount of work complete, thus increasing the completion percentage. Will never increase the work completed past the amount of work todo. That is, percentages > 100% are not allowed. Triggers a `change` event. * tracker.finish() Marks this tracker as finished, tracker.completed() will now be 1. Triggers a `change` event. TrackerStream ============= * var tracker = new TrackerStream(**name**, **size**, **options**) * **name** *(optional)* The name of this counter to report in change events. Defaults to undefined. * **size** *(optional)* The number of bytes being sent through this stream. * **options** *(optional)* A hash of stream options The tracker stream object is a pass through stream that updates an internal tracker object each time a block passes through. It's intended to track downloads, file extraction and other related activities. You use it by piping your data source into it and then using it as your data source. If your data has a length attribute then that's used as the amount of work completed when the chunk is passed through. If it does not (eg, object streams) then each chunk counts as completing 1 unit of work, so your size should be the total number of objects being streamed. * tracker.addWork(**todo**) * **todo** Increase the expected overall size by **todo** bytes. Increases the amount of work to be done, thus decreasing the completion percentage. Triggers a `change` event. # readable-stream ***Node-core v8.11.1 streams for userland*** [](https://travis-ci.org/nodejs/readable-stream) [](https://nodei.co/npm/readable-stream/) [](https://nodei.co/npm/readable-stream/) [](https://saucelabs.com/u/readable-stream) ```bash npm install --save readable-stream ``` ***Node-core streams for userland*** This package is a mirror of the Streams2 and Streams3 implementations in Node-core. Full documentation may be found on the [Node.js website](https://nodejs.org/dist/v8.11.1/docs/api/stream.html). If you want to guarantee a stable streams base, regardless of what version of Node you, or the users of your libraries are using, use **readable-stream** *only* and avoid the *"stream"* module in Node-core, for background see [this blogpost](http://r.va.gg/2014/06/why-i-dont-use-nodes-core-stream-module.html). As of version 2.0.0 **readable-stream** uses semantic versioning. # Streams Working Group `readable-stream` is maintained by the Streams Working Group, which oversees the development and maintenance of the Streams API within Node.js. The responsibilities of the Streams Working Group include: * Addressing stream issues on the Node.js issue tracker. * Authoring and editing stream documentation within the Node.js project. * Reviewing changes to stream subclasses within the Node.js project. * Redirecting changes to streams from the Node.js project to this project. * Assisting in the implementation of stream providers within Node.js. * Recommending versions of `readable-stream` to be included in Node.js. * Messaging about the future of streams to give the community advance notice of changes. <a name="members"></a> ## Team Members * **Chris Dickinson** ([@chrisdickinson](https://github.com/chrisdickinson)) &lt;christopher.s.dickinson@gmail.com&gt; - Release GPG key: 9554F04D7259F04124DE6B476D5A82AC7E37093B * **Calvin Metcalf** ([@calvinmetcalf](https://github.com/calvinmetcalf)) &lt;calvin.metcalf@gmail.com&gt; - Release GPG key: F3EF5F62A87FC27A22E643F714CE4FF5015AA242 * **Rod Vagg** ([@rvagg](https://github.com/rvagg)) &lt;rod@vagg.org&gt; - Release GPG key: DD8F2338BAE7501E3DD5AC78C273792F7D83545D * **Sam Newman** ([@sonewman](https://github.com/sonewman)) &lt;newmansam@outlook.com&gt; * **Mathias Buus** ([@mafintosh](https://github.com/mafintosh)) &lt;mathiasbuus@gmail.com&gt; * **Domenic Denicola** ([@domenic](https://github.com/domenic)) &lt;d@domenic.me&gt; * **Matteo Collina** ([@mcollina](https://github.com/mcollina)) &lt;matteo.collina@gmail.com&gt; - Release GPG key: 3ABC01543F22DD2239285CDD818674489FBC127E * **Irina Shestak** ([@lrlna](https://github.com/lrlna)) &lt;shestak.irina@gmail.com&gt; # balanced-match Match balanced string pairs, like `{` and `}` or `<b>` and `</b>`. Supports regular expressions as well! [](http://travis-ci.org/juliangruber/balanced-match) [](https://www.npmjs.org/package/balanced-match) [](https://ci.testling.com/juliangruber/balanced-match) ## Example Get the first matching pair of braces: ```js var balanced = require('balanced-match'); console.log(balanced('{', '}', 'pre{in{nested}}post')); console.log(balanced('{', '}', 'pre{first}between{second}post')); console.log(balanced(/\s+\{\s+/, /\s+\}\s+/, 'pre { in{nest} } post')); ``` The matches are: ```bash $ node example.js { start: 3, end: 14, pre: 'pre', body: 'in{nested}', post: 'post' } { start: 3, end: 9, pre: 'pre', body: 'first', post: 'between{second}post' } { start: 3, end: 17, pre: 'pre', body: 'in{nest}', post: 'post' } ``` ## API ### var m = balanced(a, b, str) For the first non-nested matching pair of `a` and `b` in `str`, return an object with those keys: * **start** the index of the first match of `a` * **end** the index of the matching `b` * **pre** the preamble, `a` and `b` not included * **body** the match, `a` and `b` not included * **post** the postscript, `a` and `b` not included If there's no match, `undefined` will be returned. If the `str` contains more `a` than `b` / there are unmatched pairs, the first match that was closed will be used. For example, `{{a}` will match `['{', 'a', '']` and `{a}}` will match `['', 'a', '}']`. ### var r = balanced.range(a, b, str) For the first non-nested matching pair of `a` and `b` in `str`, return an array with indexes: `[ <a index>, <b index> ]`. If there's no match, `undefined` will be returned. If the `str` contains more `a` than `b` / there are unmatched pairs, the first match that was closed will be used. For example, `{{a}` will match `[ 1, 3 ]` and `{a}}` will match `[0, 2]`. ## Installation With [npm](https://npmjs.org) do: ```bash npm install balanced-match ``` ## Security contact information To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. ## License (MIT) Copyright (c) 2013 Julian Gruber &lt;julian@juliangruber.com&gt; Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # Javascript Error Polyfill [](https://travis-ci.org/inf3rno/error-polyfill) Implementing the [V8 Stack Trace API](https://github.com/v8/v8/wiki/Stack-Trace-API) in non-V8 environments as much as possible ## Installation ```bash npm install error-polyfill ``` ```bash bower install error-polyfill ``` ### Environment compatibility Tested on the following environments: Windows 7 - **Node.js** 9.6 - **Chrome** 64.0 - **Firefox** 58.0 - **Internet Explorer** 10.0, 11.0 - **PhantomJS** 2.1 - **Opera** 51.0 Travis - **Node.js** 8, 9 - **Chrome** - **Firefox** - **PhantomJS** The polyfill might work on other environments too due to its adaptive design. I use [Karma](https://github.com/karma-runner/karma) with [Browserify](https://github.com/substack/node-browserify) to test the framework in browsers. ### Requirements ES5 support is required, without that the lib throws an Error and stops working. The ES5 features are tested by the [capability](https://github.com/inf3rno/capability) lib run time. Classes are created by the [o3](https://github.com/inf3rno/o3) lib. Utility functions are implemented in the [u3](https://github.com/inf3rno/u3) lib. ## API documentation ### Usage In this documentation I used the framework as follows: ```js require("error-polyfill"); // <- your code here ``` It is recommended to require the polyfill in your main script. ### Getting a past stack trace with `Error.getStackTrace` This static method is not part of the V8 Stack Trace API, but it is recommended to **use `Error.getStackTrace(throwable)` instead of `throwable.stack`** to get the stack trace of Error instances! Explanation: By non-V8 environments we cannot replace the default stack generation algorithm, so we need a workaround to generate the stack when somebody tries to access it. So the original stack string will be parsed and the result will be properly formatted by accessing the stack using the `Error.getStackTrace` method. Arguments and return values: - The `throwable` argument should be an `Error` (descendant) instance, but it can be an `Object` instance as well. - The return value is the generated `stack` of the `throwable` argument. Example: ```js try { theNotDefinedFunction(); } catch (error) { console.log(Error.getStackTrace(error)); // ReferenceError: theNotDefinedFunction is not defined // at ... // ... } ``` ### Capturing the present stack trace with `Error.captureStackTrace` The `Error.captureStackTrace(throwable [, terminator])` sets the present stack above the `terminator` on the `throwable`. Arguments and return values: - The `throwable` argument should be an instance of an `Error` descendant, but it can be an `Object` instance as well. It is recommended to use `Error` descendant instances instead of inline objects, because we can recognize them by type e.g. `error instanceof UserError`. - The optional `terminator` argument should be a `Function`. Only the calls before this function will be reported in the stack, so without a `terminator` argument, the last call in the stack will be the call of the `Error.captureStackTrace`. - There is no return value, the `stack` will be set on the `throwable` so you will be able to access it using `Error.getStackTrace`. The format of the stack depends on the `Error.prepareStackTrace` implementation. Example: ```js var UserError = function (message){ this.name = "UserError"; this.message = message; Error.captureStackTrace(this, this.constructor); }; UserError.prototype = Object.create(Error.prototype); function codeSmells(){ throw new UserError("What's going on?!"); } codeSmells(); // UserError: What's going on?! // at codeSmells (myModule.js:23:1) // ... ``` Limitations: By the current implementation the `terminator` can be only the `Error.captureStackTrace` caller function. This will change soon, but in certain conditions, e.g. by using strict mode (`"use strict";`) it is not possible to access the information necessary to implement this feature. You will get an empty `frames` array and a `warning` in the `Error.prepareStackTrace` when the stack parser meets with such conditions. ### Formatting the stack trace with `Error.prepareStackTrace` The `Error.prepareStackTrace(throwable, frames [, warnings])` formats the stack `frames` and returns the `stack` value for `Error.captureStackTrace` or `Error.getStackTrace`. The native implementation returns a stack string, but you can override that by setting a new function value. Arguments and return values: - The `throwable` argument is an `Error` or `Object` instance coming from the `Error.captureStackTrace` or from the creation of a new `Error` instance. Be aware that in some environments you need to throw that instance to get a parsable stack. Without that you will get only a `warning` by trying to access the stack with `Error.getStackTrace`. - The `frames` argument is an array of `Frame` instances. Each `frame` represents a function call in the stack. You can use these frames to build a stack string. To access information about individual frames you can use the following methods. - `frame.toString()` - Returns the string representation of the frame, e.g. `codeSmells (myModule.js:23:1)`. - `frame.getThis()` - **Cannot be supported.** Returns the context of the call, only V8 environments support this natively. - `frame.getTypeName()` - **Not implemented yet.** Returns the type name of the context, by the global namespace it is `Window` in Chrome. - `frame.getFunction()` - Returns the called function or `undefined` by strict mode. - `frame.getFunctionName()` - **Not implemented yet.** Returns the name of the called function. - `frame.getMethodName()` - **Not implemented yet.** Returns the method name of the called function is a method of an object. - `frame.getFileName()` - **Not implemented yet.** Returns the file name where the function was called. - `frame.getLineNumber()` - **Not implemented yet.** Returns at which line the function was called in the file. - `frame.getColumnNumber()` - **Not implemented yet.** Returns at which column the function was called in the file. This information is not always available. - `frame.getEvalOrigin()` - **Not implemented yet.** Returns the original of an `eval` call. - `frame.isTopLevel()` - **Not implemented yet.** Returns whether the function was called from the top level. - `frame.isEval()` - **Not implemented yet.** Returns whether the called function was `eval`. - `frame.isNative()` - **Not implemented yet.** Returns whether the called function was native. - `frame.isConstructor()` - **Not implemented yet.** Returns whether the called function was a constructor. - The optional `warnings` argument contains warning messages coming from the stack parser. It is not part of the V8 Stack Trace API. - The return value will be the stack you can access with `Error.getStackTrace(throwable)`. If it is an object, it is recommended to add a `toString` method, so you will be able to read it in the console. Example: ```js Error.prepareStackTrace = function (throwable, frames, warnings) { var string = ""; string += throwable.name || "Error"; string += ": " + (throwable.message || ""); if (warnings instanceof Array) for (var warningIndex in warnings) { var warning = warnings[warningIndex]; string += "\n # " + warning; } for (var frameIndex in frames) { var frame = frames[frameIndex]; string += "\n at " + frame.toString(); } return string; }; ``` ### Stack trace size limits with `Error.stackTraceLimit` **Not implemented yet.** You can set size limits on the stack trace, so you won't have any problems because of too long stack traces. Example: ```js Error.stackTraceLimit = 10; ``` ### Handling uncaught errors and rejections **Not implemented yet.** ## Differences between environments and modes Since there is no Stack Trace API standard, every browsers solves this problem differently. I try to document what I've found about these differences as detailed as possible, so it will be easier to follow the code. Overriding the `error.stack` property with custom Stack instances - by Node.js and Chrome the `Error.prepareStackTrace()` can override every `error.stack` automatically right by creation - by Firefox, Internet Explorer and Opera you cannot automatically override every `error.stack` by native errors - by PhantomJS you cannot override the `error.stack` property of native errors, it is not configurable Capturing the current stack trace - by Node.js, Chrome, Firefox and Opera the stack property is added by instantiating a native error - by Node.js and Chrome the stack creation is lazy loaded and cached, so the `Error.prepareStackTrace()` is called only by the first access - by Node.js and Chrome the current stack can be added to any object with `Error.captureStackTrace()` - by Internet Explorer the stack is created by throwing a native error - by PhantomJS the stack is created by throwing any object, but not a primitive Accessing the stack - by Node.js, Chrome, Firefox, Internet Explorer, Opera and PhantomJS you can use the `error.stack` property - by old Opera you have to use the `error.stacktrace` property to get the stack Prefixes and postfixes on the stack string - by Node.js, Chrome, Internet Explorer and Opera you have the `error.name` and the `error.message` in a `{name}: {message}` format at the beginning of the stack string - by Firefox and PhantomJS the stack string does not contain the `error.name` and the `error.message` - by Firefox you have an empty line at the end of the stack string Accessing the stack frames array - by Node.js and Chrome you can access the frame objects directly by overriding the `Error.prepareStackTrace()` - by Firefox, Internet Explorer, PhantomJS, and Opera you need to parse the stack string in order to get the frames The structure of the frame string - by Node.js and Chrome - the frame string of calling a function from a module: `thirdFn (http://localhost/myModule.js:45:29)` - the frame strings contain an ` at ` prefix, which is not present by the `frame.toString()` output, so it is added by the `stack.toString()` - by Firefox - the frame string of calling a function from a module: `thirdFn@http://localhost/myModule.js:45:29` - by Internet Explorer - the frame string of calling a function from a module: ` at thirdFn (http://localhost/myModule.js:45:29)` - by PhantomJS - the frame string of calling a function from a module: `thirdFn@http://localhost/myModule.js:45:29` - by Opera - the frame string of calling a function from a module: ` at thirdFn (http://localhost/myModule.js:45)` Accessing information by individual frames - by Node.js and Chrome the `frame.getThis()` and the `frame.getFunction()` returns `undefined` by frames originate from [strict mode](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Strict_mode) code - by Firefox, Internet Explorer, PhantomJS, and Opera the context of the function calls is not accessible, so the `frame.getThis()` cannot be implemented - by Firefox, Internet Explorer, PhantomJS, and Opera functions are not accessible with `arguments.callee.caller` by frames originate from strict mode, so by these frames `frame.getFunction()` can return only `undefined` (this is consistent with V8 behavior) ## License MIT - 2016 Jánszky László Lajos # file-entry-cache > Super simple cache for file metadata, useful for process that work o a given series of files > and that only need to repeat the job on the changed ones since the previous run of the process — Edit [](https://npmjs.org/package/file-entry-cache) [](https://travis-ci.org/royriojas/file-entry-cache) ## install ```bash npm i --save file-entry-cache ``` ## Usage The module exposes two functions `create` and `createFromFile`. ## `create(cacheName, [directory, useCheckSum])` - **cacheName**: the name of the cache to be created - **directory**: Optional the directory to load the cache from - **usecheckSum**: Whether to use md5 checksum to verify if file changed. If false the default will be to use the mtime and size of the file. ## `createFromFile(pathToCache, [useCheckSum])` - **pathToCache**: the path to the cache file (this combines the cache name and directory) - **useCheckSum**: Whether to use md5 checksum to verify if file changed. If false the default will be to use the mtime and size of the file. ```js // loads the cache, if one does not exists for the given // Id a new one will be prepared to be created var fileEntryCache = require('file-entry-cache'); var cache = fileEntryCache.create('testCache'); var files = expand('../fixtures/*.txt'); // the first time this method is called, will return all the files var oFiles = cache.getUpdatedFiles(files); // this will persist this to disk checking each file stats and // updating the meta attributes `size` and `mtime`. // custom fields could also be added to the meta object and will be persisted // in order to retrieve them later cache.reconcile(); // use this if you want the non visited file entries to be kept in the cache // for more than one execution // // cache.reconcile( true /* noPrune */) // on a second run var cache2 = fileEntryCache.create('testCache'); // will return now only the files that were modified or none // if no files were modified previous to the execution of this function var oFiles = cache.getUpdatedFiles(files); // if you want to prevent a file from being considered non modified // something useful if a file failed some sort of validation // you can then remove the entry from the cache doing cache.removeEntry('path/to/file'); // path to file should be the same path of the file received on `getUpdatedFiles` // that will effectively make the file to appear again as modified until the validation is passed. In that // case you should not remove it from the cache // if you need all the files, so you can determine what to do with the changed ones // you can call var oFiles = cache.normalizeEntries(files); // oFiles will be an array of objects like the following entry = { key: 'some/name/file', the path to the file changed: true, // if the file was changed since previous run meta: { size: 3242, // the size of the file mtime: 231231231, // the modification time of the file data: {} // some extra field stored for this file (useful to save the result of a transformation on the file } } ``` ## Motivation for this module I needed a super simple and dumb **in-memory cache** with optional disk persistence (write-back cache) in order to make a script that will beautify files with `esformatter` to execute only on the files that were changed since the last run. In doing so the process of beautifying files was reduced from several seconds to a small fraction of a second. This module uses [flat-cache](https://www.npmjs.com/package/flat-cache) a super simple `key/value` cache storage with optional file persistance. The main idea is to read the files when the task begins, apply the transforms required, and if the process succeed, then store the new state of the files. The next time this module request for `getChangedFiles` will return only the files that were modified. Making the process to end faster. This module could also be used by processes that modify the files applying a transform, in that case the result of the transform could be stored in the `meta` field, of the entries. Anything added to the meta field will be persisted. Those processes won't need to call `getChangedFiles` they will instead call `normalizeEntries` that will return the entries with a `changed` field that can be used to determine if the file was changed or not. If it was not changed the transformed stored data could be used instead of actually applying the transformation, saving time in case of only a few files changed. In the worst case scenario all the files will be processed. In the best case scenario only a few of them will be processed. ## Important notes - The values set on the meta attribute of the entries should be `stringify-able` ones if possible, flat-cache uses `circular-json` to try to persist circular structures, but this should be considered experimental. The best results are always obtained with non circular values - All the changes to the cache state are done to memory first and only persisted after reconcile. ## License MIT # y18n [![Build Status][travis-image]][travis-url] [![Coverage Status][coveralls-image]][coveralls-url] [![NPM version][npm-image]][npm-url] [![js-standard-style][standard-image]][standard-url] [](https://conventionalcommits.org) The bare-bones internationalization library used by yargs. Inspired by [i18n](https://www.npmjs.com/package/i18n). ## Examples _simple string translation:_ ```js var __ = require('y18n').__ console.log(__('my awesome string %s', 'foo')) ``` output: `my awesome string foo` _using tagged template literals_ ```js var __ = require('y18n').__ var str = 'foo' console.log(__`my awesome string ${str}`) ``` output: `my awesome string foo` _pluralization support:_ ```js var __n = require('y18n').__n console.log(__n('one fish %s', '%d fishes %s', 2, 'foo')) ``` output: `2 fishes foo` ## JSON Language Files The JSON language files should be stored in a `./locales` folder. File names correspond to locales, e.g., `en.json`, `pirate.json`. When strings are observed for the first time they will be added to the JSON file corresponding to the current locale. ## Methods ### require('y18n')(config) Create an instance of y18n with the config provided, options include: * `directory`: the locale directory, default `./locales`. * `updateFiles`: should newly observed strings be updated in file, default `true`. * `locale`: what locale should be used. * `fallbackToLanguage`: should fallback to a language-only file (e.g. `en.json`) be allowed if a file matching the locale does not exist (e.g. `en_US.json`), default `true`. ### y18n.\_\_(str, arg, arg, arg) Print a localized string, `%s` will be replaced with `arg`s. This function can also be used as a tag for a template literal. You can use it like this: <code>__&#96;hello ${'world'}&#96;</code>. This will be equivalent to `__('hello %s', 'world')`. ### y18n.\_\_n(singularString, pluralString, count, arg, arg, arg) Print a localized string with appropriate pluralization. If `%d` is provided in the string, the `count` will replace this placeholder. ### y18n.setLocale(str) Set the current locale being used. ### y18n.getLocale() What locale is currently being used? ### y18n.updateLocale(obj) Update the current locale with the key value pairs in `obj`. ## License ISC [travis-url]: https://travis-ci.org/yargs/y18n [travis-image]: https://img.shields.io/travis/yargs/y18n.svg [coveralls-url]: https://coveralls.io/github/yargs/y18n [coveralls-image]: https://img.shields.io/coveralls/yargs/y18n.svg [npm-url]: https://npmjs.org/package/y18n [npm-image]: https://img.shields.io/npm/v/y18n.svg [standard-image]: https://img.shields.io/badge/code%20style-standard-brightgreen.svg [standard-url]: https://github.com/feross/standard # cross-spawn [![NPM version][npm-image]][npm-url] [![Downloads][downloads-image]][npm-url] [![Build Status][travis-image]][travis-url] [![Build status][appveyor-image]][appveyor-url] [![Coverage Status][codecov-image]][codecov-url] [![Dependency status][david-dm-image]][david-dm-url] [![Dev Dependency status][david-dm-dev-image]][david-dm-dev-url] [npm-url]:https://npmjs.org/package/cross-spawn [downloads-image]:https://img.shields.io/npm/dm/cross-spawn.svg [npm-image]:https://img.shields.io/npm/v/cross-spawn.svg [travis-url]:https://travis-ci.org/moxystudio/node-cross-spawn [travis-image]:https://img.shields.io/travis/moxystudio/node-cross-spawn/master.svg [appveyor-url]:https://ci.appveyor.com/project/satazor/node-cross-spawn [appveyor-image]:https://img.shields.io/appveyor/ci/satazor/node-cross-spawn/master.svg [codecov-url]:https://codecov.io/gh/moxystudio/node-cross-spawn [codecov-image]:https://img.shields.io/codecov/c/github/moxystudio/node-cross-spawn/master.svg [david-dm-url]:https://david-dm.org/moxystudio/node-cross-spawn [david-dm-image]:https://img.shields.io/david/moxystudio/node-cross-spawn.svg [david-dm-dev-url]:https://david-dm.org/moxystudio/node-cross-spawn?type=dev [david-dm-dev-image]:https://img.shields.io/david/dev/moxystudio/node-cross-spawn.svg A cross platform solution to node's spawn and spawnSync. ## Installation Node.js version 8 and up: `$ npm install cross-spawn` Node.js version 7 and under: `$ npm install cross-spawn@6` ## Why Node has issues when using spawn on Windows: - It ignores [PATHEXT](https://github.com/joyent/node/issues/2318) - It does not support [shebangs](https://en.wikipedia.org/wiki/Shebang_(Unix)) - Has problems running commands with [spaces](https://github.com/nodejs/node/issues/7367) - Has problems running commands with posix relative paths (e.g.: `./my-folder/my-executable`) - Has an [issue](https://github.com/moxystudio/node-cross-spawn/issues/82) with command shims (files in `node_modules/.bin/`), where arguments with quotes and parenthesis would result in [invalid syntax error](https://github.com/moxystudio/node-cross-spawn/blob/e77b8f22a416db46b6196767bcd35601d7e11d54/test/index.test.js#L149) - No `options.shell` support on node `<v4.8` All these issues are handled correctly by `cross-spawn`. There are some known modules, such as [win-spawn](https://github.com/ForbesLindesay/win-spawn), that try to solve this but they are either broken or provide faulty escaping of shell arguments. ## Usage Exactly the same way as node's [`spawn`](https://nodejs.org/api/child_process.html#child_process_child_process_spawn_command_args_options) or [`spawnSync`](https://nodejs.org/api/child_process.html#child_process_child_process_spawnsync_command_args_options), so it's a drop in replacement. ```js const spawn = require('cross-spawn'); // Spawn NPM asynchronously const child = spawn('npm', ['list', '-g', '-depth', '0'], { stdio: 'inherit' }); // Spawn NPM synchronously const result = spawn.sync('npm', ['list', '-g', '-depth', '0'], { stdio: 'inherit' }); ``` ## Caveats ### Using `options.shell` as an alternative to `cross-spawn` Starting from node `v4.8`, `spawn` has a `shell` option that allows you run commands from within a shell. This new option solves the [PATHEXT](https://github.com/joyent/node/issues/2318) issue but: - It's not supported in node `<v4.8` - You must manually escape the command and arguments which is very error prone, specially when passing user input - There are a lot of other unresolved issues from the [Why](#why) section that you must take into account If you are using the `shell` option to spawn a command in a cross platform way, consider using `cross-spawn` instead. You have been warned. ### `options.shell` support While `cross-spawn` adds support for `options.shell` in node `<v4.8`, all of its enhancements are disabled. This mimics the Node.js behavior. More specifically, the command and its arguments will not be automatically escaped nor shebang support will be offered. This is by design because if you are using `options.shell` you are probably targeting a specific platform anyway and you don't want things to get into your way. ### Shebangs support While `cross-spawn` handles shebangs on Windows, its support is limited. More specifically, it just supports `#!/usr/bin/env <program>` where `<program>` must not contain any arguments. If you would like to have the shebang support improved, feel free to contribute via a pull-request. Remember to always test your code on Windows! ## Tests `$ npm test` `$ npm test -- --watch` during development ## License Released under the [MIT License](https://www.opensource.org/licenses/mit-license.php). # pump pump is a small node module that pipes streams together and destroys all of them if one of them closes. ``` npm install pump ``` [](http://travis-ci.org/mafintosh/pump) ## What problem does it solve? When using standard `source.pipe(dest)` source will _not_ be destroyed if dest emits close or an error. You are also not able to provide a callback to tell when then pipe has finished. pump does these two things for you ## Usage Simply pass the streams you want to pipe together to pump and add an optional callback ``` js var pump = require('pump') var fs = require('fs') var source = fs.createReadStream('/dev/random') var dest = fs.createWriteStream('/dev/null') pump(source, dest, function(err) { console.log('pipe finished', err) }) setTimeout(function() { dest.destroy() // when dest is closed pump will destroy source }, 1000) ``` You can use pump to pipe more than two streams together as well ``` js var transform = someTransformStream() pump(source, transform, anotherTransform, dest, function(err) { console.log('pipe finished', err) }) ``` If `source`, `transform`, `anotherTransform` or `dest` closes all of them will be destroyed. Similarly to `stream.pipe()`, `pump()` returns the last stream passed in, so you can do: ``` return pump(s1, s2) // returns s2 ``` If you want to return a stream that combines *both* s1 and s2 to a single stream use [pumpify](https://github.com/mafintosh/pumpify) instead. ## License MIT ## Related `pump` is part of the [mississippi stream utility collection](https://github.com/maxogden/mississippi) which includes more useful stream modules similar to this one. # tar-fs filesystem bindings for [tar-stream](https://github.com/mafintosh/tar-stream). ``` npm install tar-fs ``` [](http://travis-ci.org/mafintosh/tar-fs) ## Usage tar-fs allows you to pack directories into tarballs and extract tarballs into directories. It doesn't gunzip for you, so if you want to extract a `.tar.gz` with this you'll need to use something like [gunzip-maybe](https://github.com/mafintosh/gunzip-maybe) in addition to this. ``` js var tar = require('tar-fs') var fs = require('fs') // packing a directory tar.pack('./my-directory').pipe(fs.createWriteStream('my-tarball.tar')) // extracting a directory fs.createReadStream('my-other-tarball.tar').pipe(tar.extract('./my-other-directory')) ``` To ignore various files when packing or extracting add a ignore function to the options. `ignore` is also an alias for `filter`. Additionally you get `header` if you use ignore while extracting. That way you could also filter by metadata. ``` js var pack = tar.pack('./my-directory', { ignore: function(name) { return path.extname(name) === '.bin' // ignore .bin files when packing } }) var extract = tar.extract('./my-other-directory', { ignore: function(name) { return path.extname(name) === '.bin' // ignore .bin files inside the tarball when extracing } }) var extractFilesDirs = tar.extract('./my-other-other-directory', { ignore: function(_, header) { // pass files & directories, ignore e.g. symlinks return header.type !== 'file' && header.type !== 'directory' } }) ``` You can also specify which entries to pack using the `entries` option ```js var pack = tar.pack('./my-directory', { entries: ['file1', 'subdir/file2'] // only the specific entries will be packed }) ``` If you want to modify the headers when packing/extracting add a map function to the options ``` js var pack = tar.pack('./my-directory', { map: function(header) { header.name = 'prefixed/'+header.name return header } }) var extract = tar.extract('./my-directory', { map: function(header) { header.name = 'another-prefix/'+header.name return header } }) ``` Similarly you can use `mapStream` incase you wanna modify the input/output file streams ``` js var pack = tar.pack('./my-directory', { mapStream: function(fileStream, header) { // NOTE: the returned stream HAS to have the same length as the input stream. // If not make sure to update the size in the header passed in here. if (path.extname(header.name) === '.js') { return fileStream.pipe(someTransform) } return fileStream; } }) var extract = tar.extract('./my-directory', { mapStream: function(fileStream, header) { if (path.extname(header.name) === '.js') { return fileStream.pipe(someTransform) } return fileStream; } }) ``` Set `options.fmode` and `options.dmode` to ensure that files/directories extracted have the corresponding modes ``` js var extract = tar.extract('./my-directory', { dmode: parseInt(555, 8), // all dirs should be readable fmode: parseInt(444, 8) // all files should be readable }) ``` It can be useful to use `dmode` and `fmode` if you are packing/unpacking tarballs between *nix/windows to ensure that all files/directories unpacked are readable. Alternatively you can set `options.readable` and/or `options.writable` to set the dmode and fmode to readable/writable. ``` js var extract = tar.extract('./my-directory', { readable: true, // all dirs and files should be readable writable: true, // all dirs and files should be writable }) ``` Set `options.strict` to `false` if you want to ignore errors due to unsupported entry types (like device files) To dereference symlinks (pack the contents of the symlink instead of the link itself) set `options.dereference` to `true`. ## Copy a directory Copying a directory with permissions and mtime intact is as simple as ``` js tar.pack('source-directory').pipe(tar.extract('dest-directory')) ``` ## Interaction with [`tar-stream`](https://github.com/mafintosh/tar-stream) Use `finalize: false` and the `finish` hook to leave the pack stream open for further entries (see [`tar-stream#pack`](https://github.com/mafintosh/tar-stream#packing)), and use `pack` to pass an existing pack stream. ``` js var mypack = tar.pack('./my-directory', { finalize: false, finish: function(sameAsMypack) { mypack.entry({name: 'generated-file.txt'}, "hello") tar.pack('./other-directory', { pack: sameAsMypack }) } }) ``` ## Performance Packing and extracting a 6.1 GB with 2496 directories and 2398 files yields the following results on my Macbook Air. [See the benchmark here](https://gist.github.com/mafintosh/8102201) * tar-fs: 34.261 seconds * [node-tar](https://github.com/isaacs/node-tar): 366.123 seconds (or 10x slower) ## License MIT # create-hash [](https://travis-ci.org/crypto-browserify/createHash) Node style hashes for use in the browser, with native hash functions in node. API is the same as hashes in node: ```js var createHash = require('create-hash') var hash = createHash('sha224') hash.update('synchronous write') // optional encoding parameter hash.digest() // synchronously get result with optional encoding parameter hash.write('write to it as a stream') hash.end() // remember it's a stream hash.read() // only if you ended it as a stream though ``` To get the JavaScript version even in node do `require('create-hash/browser')` # Web IDL Type Conversions on JavaScript Values This package implements, in JavaScript, the algorithms to convert a given JavaScript value according to a given [Web IDL](http://heycam.github.io/webidl/) [type](http://heycam.github.io/webidl/#idl-types). The goal is that you should be able to write code like ```js "use strict"; const conversions = require("webidl-conversions"); function doStuff(x, y) { x = conversions["boolean"](x); y = conversions["unsigned long"](y); // actual algorithm code here } ``` and your function `doStuff` will behave the same as a Web IDL operation declared as ```webidl void doStuff(boolean x, unsigned long y); ``` ## API This package's main module's default export is an object with a variety of methods, each corresponding to a different Web IDL type. Each method, when invoked on a JavaScript value, will give back the new JavaScript value that results after passing through the Web IDL conversion rules. (See below for more details on what that means.) Alternately, the method could throw an error, if the Web IDL algorithm is specified to do so: for example `conversions["float"](NaN)` [will throw a `TypeError`](http://heycam.github.io/webidl/#es-float). Each method also accepts a second, optional, parameter for miscellaneous options. For conversion methods that throw errors, a string option `{ context }` may be provided to provide more information in the error message. (For example, `conversions["float"](NaN, { context: "Argument 1 of Interface's operation" })` will throw an error with message `"Argument 1 of Interface's operation is not a finite floating-point value."`) Specific conversions may also accept other options, the details of which can be found below. ## Conversions implemented Conversions for all of the basic types from the Web IDL specification are implemented: - [`any`](https://heycam.github.io/webidl/#es-any) - [`void`](https://heycam.github.io/webidl/#es-void) - [`boolean`](https://heycam.github.io/webidl/#es-boolean) - [Integer types](https://heycam.github.io/webidl/#es-integer-types), which can additionally be provided the boolean options `{ clamp, enforceRange }` as a second parameter - [`float`](https://heycam.github.io/webidl/#es-float), [`unrestricted float`](https://heycam.github.io/webidl/#es-unrestricted-float) - [`double`](https://heycam.github.io/webidl/#es-double), [`unrestricted double`](https://heycam.github.io/webidl/#es-unrestricted-double) - [`DOMString`](https://heycam.github.io/webidl/#es-DOMString), which can additionally be provided the boolean option `{ treatNullAsEmptyString }` as a second parameter - [`ByteString`](https://heycam.github.io/webidl/#es-ByteString), [`USVString`](https://heycam.github.io/webidl/#es-USVString) - [`object`](https://heycam.github.io/webidl/#es-object) - [`Error`](https://heycam.github.io/webidl/#es-Error) - [Buffer source types](https://heycam.github.io/webidl/#es-buffer-source-types) Additionally, for convenience, the following derived type definitions are implemented: - [`ArrayBufferView`](https://heycam.github.io/webidl/#ArrayBufferView) - [`BufferSource`](https://heycam.github.io/webidl/#BufferSource) - [`DOMTimeStamp`](https://heycam.github.io/webidl/#DOMTimeStamp) - [`Function`](https://heycam.github.io/webidl/#Function) - [`VoidFunction`](https://heycam.github.io/webidl/#VoidFunction) (although it will not censor the return type) Derived types, such as nullable types, promise types, sequences, records, etc. are not handled by this library. You may wish to investigate the [webidl2js](https://github.com/jsdom/webidl2js) project. ### A note on the `long long` types The `long long` and `unsigned long long` Web IDL types can hold values that cannot be stored in JavaScript numbers, so the conversion is imperfect. For example, converting the JavaScript number `18446744073709552000` to a Web IDL `long long` is supposed to produce the Web IDL value `-18446744073709551232`. Since we are representing our Web IDL values in JavaScript, we can't represent `-18446744073709551232`, so we instead the best we could do is `-18446744073709552000` as the output. This library actually doesn't even get that far. Producing those results would require doing accurate modular arithmetic on 64-bit intermediate values, but JavaScript does not make this easy. We could pull in a big-integer library as a dependency, but in lieu of that, we for now have decided to just produce inaccurate results if you pass in numbers that are not strictly between `Number.MIN_SAFE_INTEGER` and `Number.MAX_SAFE_INTEGER`. ## Background What's actually going on here, conceptually, is pretty weird. Let's try to explain. Web IDL, as part of its madness-inducing design, has its own type system. When people write algorithms in web platform specs, they usually operate on Web IDL values, i.e. instances of Web IDL types. For example, if they were specifying the algorithm for our `doStuff` operation above, they would treat `x` as a Web IDL value of [Web IDL type `boolean`](http://heycam.github.io/webidl/#idl-boolean). Crucially, they would _not_ treat `x` as a JavaScript variable whose value is either the JavaScript `true` or `false`. They're instead working in a different type system altogether, with its own rules. Separately from its type system, Web IDL defines a ["binding"](http://heycam.github.io/webidl/#ecmascript-binding) of the type system into JavaScript. This contains rules like: when you pass a JavaScript value to the JavaScript method that manifests a given Web IDL operation, how does that get converted into a Web IDL value? For example, a JavaScript `true` passed in the position of a Web IDL `boolean` argument becomes a Web IDL `true`. But, a JavaScript `true` passed in the position of a [Web IDL `unsigned long`](http://heycam.github.io/webidl/#idl-unsigned-long) becomes a Web IDL `1`. And so on. Finally, we have the actual implementation code. This is usually C++, although these days [some smart people are using Rust](https://github.com/servo/servo). The implementation, of course, has its own type system. So when they implement the Web IDL algorithms, they don't actually use Web IDL values, since those aren't "real" outside of specs. Instead, implementations apply the Web IDL binding rules in such a way as to convert incoming JavaScript values into C++ values. For example, if code in the browser called `doStuff(true, true)`, then the implementation code would eventually receive a C++ `bool` containing `true` and a C++ `uint32_t` containing `1`. The upside of all this is that implementations can abstract all the conversion logic away, letting Web IDL handle it, and focus on implementing the relevant methods in C++ with values of the correct type already provided. That is payoff of Web IDL, in a nutshell. And getting to that payoff is the goal of _this_ project—but for JavaScript implementations, instead of C++ ones. That is, this library is designed to make it easier for JavaScript developers to write functions that behave like a given Web IDL operation. So conceptually, the conversion pipeline, which in its general form is JavaScript values ↦ Web IDL values ↦ implementation-language values, in this case becomes JavaScript values ↦ Web IDL values ↦ JavaScript values. And that intermediate step is where all the logic is performed: a JavaScript `true` becomes a Web IDL `1` in an unsigned long context, which then becomes a JavaScript `1`. ## Don't use this Seriously, why would you ever use this? You really shouldn't. Web IDL is … strange, and you shouldn't be emulating its semantics. If you're looking for a generic argument-processing library, you should find one with better rules than those from Web IDL. In general, your JavaScript should not be trying to become more like Web IDL; if anything, we should fix Web IDL to make it more like JavaScript. The _only_ people who should use this are those trying to create faithful implementations (or polyfills) of web platform interfaces defined in Web IDL. Its main consumer is the [jsdom](https://github.com/tmpvar/jsdom) project. wide-align ---------- A wide-character aware text alignment function for use in terminals / on the console. ### Usage ``` var align = require('wide-align') // Note that if you view this on a unicode console, all of the slashes are // aligned. This is because on a console, all narrow characters are // an en wide and all wide characters are an em. In browsers, this isn't // held to and wide characters like "古" can be less than two narrow // characters even with a fixed width font. console.log(align.center('abc', 10)) // ' abc ' console.log(align.center('古古古', 10)) // ' 古古古 ' console.log(align.left('abc', 10)) // 'abc ' console.log(align.left('古古古', 10)) // '古古古 ' console.log(align.right('abc', 10)) // ' abc' console.log(align.right('古古古', 10)) // ' 古古古' ``` ### Functions #### `align.center(str, length)` → `str` Returns *str* with spaces added to both sides such that that it is *length* chars long and centered in the spaces. #### `align.left(str, length)` → `str` Returns *str* with spaces to the right such that it is *length* chars long. ### `align.right(str, length)` → `str` Returns *str* with spaces to the left such that it is *length* chars long. ### Origins These functions were originally taken from [cliui](https://npmjs.com/package/cliui). Changes include switching to the MUCH faster pad generation function from [lodash](https://npmjs.com/package/lodash), making center alignment pad both sides and adding left alignment. <!-- -- This file is auto-generated from README_js.md. Changes should be made there. --> # uuid [](https://github.com/uuidjs/uuid/actions?query=workflow%3ACI) [](https://github.com/uuidjs/uuid/actions?query=workflow%3ABrowser) For the creation of [RFC4122](http://www.ietf.org/rfc/rfc4122.txt) UUIDs - **Complete** - Support for RFC4122 version 1, 3, 4, and 5 UUIDs - **Cross-platform** - Support for ... - CommonJS, [ECMAScript Modules](#ecmascript-modules) and [CDN builds](#cdn-builds) - Node 8, 10, 12, 14 - Chrome, Safari, Firefox, Edge, IE 11 browsers - Webpack and rollup.js module bundlers - [React Native / Expo](#react-native--expo) - **Secure** - Cryptographically-strong random values - **Small** - Zero-dependency, small footprint, plays nice with "tree shaking" packagers - **CLI** - Includes the [`uuid` command line](#command-line) utility **Upgrading from `uuid@3.x`?** Your code is probably okay, but check out [Upgrading From `uuid@3.x`](#upgrading-from-uuid3x) for details. ## Quickstart To create a random UUID... **1. Install** ```shell npm install uuid ``` **2. Create a UUID** (ES6 module syntax) ```javascript import { v4 as uuidv4 } from 'uuid'; uuidv4(); // ⇨ '9b1deb4d-3b7d-4bad-9bdd-2b0d7b3dcb6d' ``` ... or using CommonJS syntax: ```javascript const { v4: uuidv4 } = require('uuid'); uuidv4(); // ⇨ '1b9d6bcd-bbfd-4b2d-9b5d-ab8dfbbd4bed' ``` For timestamp UUIDs, namespace UUIDs, and other options read on ... ## API Summary | | | | | --- | --- | --- | | [`uuid.NIL`](#uuidnil) | The nil UUID string (all zeros) | New in `uuid@8.3` | | [`uuid.parse()`](#uuidparsestr) | Convert UUID string to array of bytes | New in `uuid@8.3` | | [`uuid.stringify()`](#uuidstringifyarr-offset) | Convert array of bytes to UUID string | New in `uuid@8.3` | | [`uuid.v1()`](#uuidv1options-buffer-offset) | Create a version 1 (timestamp) UUID | | | [`uuid.v3()`](#uuidv3name-namespace-buffer-offset) | Create a version 3 (namespace w/ MD5) UUID | | | [`uuid.v4()`](#uuidv4options-buffer-offset) | Create a version 4 (random) UUID | | | [`uuid.v5()`](#uuidv5name-namespace-buffer-offset) | Create a version 5 (namespace w/ SHA-1) UUID | | | [`uuid.validate()`](#uuidvalidatestr) | Test a string to see if it is a valid UUID | New in `uuid@8.3` | | [`uuid.version()`](#uuidversionstr) | Detect RFC version of a UUID | New in `uuid@8.3` | ## API ### uuid.NIL The nil UUID string (all zeros). Example: ```javascript import { NIL as NIL_UUID } from 'uuid'; NIL_UUID; // ⇨ '00000000-0000-0000-0000-000000000000' ``` ### uuid.parse(str) Convert UUID string to array of bytes | | | | --------- | ---------------------------------------- | | `str` | A valid UUID `String` | | _returns_ | `Uint8Array[16]` | | _throws_ | `TypeError` if `str` is not a valid UUID | Note: Ordering of values in the byte arrays used by `parse()` and `stringify()` follows the left &Rarr; right order of hex-pairs in UUID strings. As shown in the example below. Example: ```javascript import { parse as uuidParse } from 'uuid'; // Parse a UUID const bytes = uuidParse('6ec0bd7f-11c0-43da-975e-2a8ad9ebae0b'); // Convert to hex strings to show byte order (for documentation purposes) [...bytes].map((v) => v.toString(16).padStart(2, '0')); // ⇨ // [ // '6e', 'c0', 'bd', '7f', // '11', 'c0', '43', 'da', // '97', '5e', '2a', '8a', // 'd9', 'eb', 'ae', '0b' // ] ``` ### uuid.stringify(arr[, offset]) Convert array of bytes to UUID string | | | | -------------- | ---------------------------------------------------------------------------- | | `arr` | `Array`-like collection of 16 values (starting from `offset`) between 0-255. | | [`offset` = 0] | `Number` Starting index in the Array | | _returns_ | `String` | | _throws_ | `TypeError` if a valid UUID string cannot be generated | Note: Ordering of values in the byte arrays used by `parse()` and `stringify()` follows the left &Rarr; right order of hex-pairs in UUID strings. As shown in the example below. Example: ```javascript import { stringify as uuidStringify } from 'uuid'; const uuidBytes = [ 0x6e, 0xc0, 0xbd, 0x7f, 0x11, 0xc0, 0x43, 0xda, 0x97, 0x5e, 0x2a, 0x8a, 0xd9, 0xeb, 0xae, 0x0b, ]; uuidStringify(uuidBytes); // ⇨ '6ec0bd7f-11c0-43da-975e-2a8ad9ebae0b' ``` ### uuid.v1([options[, buffer[, offset]]]) Create an RFC version 1 (timestamp) UUID | | | | --- | --- | | [`options`] | `Object` with one or more of the following properties: | | [`options.node` ] | RFC "node" field as an `Array[6]` of byte values (per 4.1.6) | | [`options.clockseq`] | RFC "clock sequence" as a `Number` between 0 - 0x3fff | | [`options.msecs`] | RFC "timestamp" field (`Number` of milliseconds, unix epoch) | | [`options.nsecs`] | RFC "timestamp" field (`Number` of nanseconds to add to `msecs`, should be 0-10,000) | | [`options.random`] | `Array` of 16 random bytes (0-255) | | [`options.rng`] | Alternative to `options.random`, a `Function` that returns an `Array` of 16 random bytes (0-255) | | [`buffer`] | `Array \| Buffer` If specified, uuid will be written here in byte-form, starting at `offset` | | [`offset` = 0] | `Number` Index to start writing UUID bytes in `buffer` | | _returns_ | UUID `String` if no `buffer` is specified, otherwise returns `buffer` | | _throws_ | `Error` if more than 10M UUIDs/sec are requested | Note: The default [node id](https://tools.ietf.org/html/rfc4122#section-4.1.6) (the last 12 digits in the UUID) is generated once, randomly, on process startup, and then remains unchanged for the duration of the process. Note: `options.random` and `options.rng` are only meaningful on the very first call to `v1()`, where they may be passed to initialize the internal `node` and `clockseq` fields. Example: ```javascript import { v1 as uuidv1 } from 'uuid'; uuidv1(); // ⇨ '2c5ea4c0-4067-11e9-8bad-9b1deb4d3b7d' ``` Example using `options`: ```javascript import { v1 as uuidv1 } from 'uuid'; const v1options = { node: [0x01, 0x23, 0x45, 0x67, 0x89, 0xab], clockseq: 0x1234, msecs: new Date('2011-11-01').getTime(), nsecs: 5678, }; uuidv1(v1options); // ⇨ '710b962e-041c-11e1-9234-0123456789ab' ``` ### uuid.v3(name, namespace[, buffer[, offset]]) Create an RFC version 3 (namespace w/ MD5) UUID API is identical to `v5()`, but uses "v3" instead. &#x26a0;&#xfe0f; Note: Per the RFC, "_If backward compatibility is not an issue, SHA-1 [Version 5] is preferred_." ### uuid.v4([options[, buffer[, offset]]]) Create an RFC version 4 (random) UUID | | | | --- | --- | | [`options`] | `Object` with one or more of the following properties: | | [`options.random`] | `Array` of 16 random bytes (0-255) | | [`options.rng`] | Alternative to `options.random`, a `Function` that returns an `Array` of 16 random bytes (0-255) | | [`buffer`] | `Array \| Buffer` If specified, uuid will be written here in byte-form, starting at `offset` | | [`offset` = 0] | `Number` Index to start writing UUID bytes in `buffer` | | _returns_ | UUID `String` if no `buffer` is specified, otherwise returns `buffer` | Example: ```javascript import { v4 as uuidv4 } from 'uuid'; uuidv4(); // ⇨ '1b9d6bcd-bbfd-4b2d-9b5d-ab8dfbbd4bed' ``` Example using predefined `random` values: ```javascript import { v4 as uuidv4 } from 'uuid'; const v4options = { random: [ 0x10, 0x91, 0x56, 0xbe, 0xc4, 0xfb, 0xc1, 0xea, 0x71, 0xb4, 0xef, 0xe1, 0x67, 0x1c, 0x58, 0x36, ], }; uuidv4(v4options); // ⇨ '109156be-c4fb-41ea-b1b4-efe1671c5836' ``` ### uuid.v5(name, namespace[, buffer[, offset]]) Create an RFC version 5 (namespace w/ SHA-1) UUID | | | | --- | --- | | `name` | `String \| Array` | | `namespace` | `String \| Array[16]` Namespace UUID | | [`buffer`] | `Array \| Buffer` If specified, uuid will be written here in byte-form, starting at `offset` | | [`offset` = 0] | `Number` Index to start writing UUID bytes in `buffer` | | _returns_ | UUID `String` if no `buffer` is specified, otherwise returns `buffer` | Note: The RFC `DNS` and `URL` namespaces are available as `v5.DNS` and `v5.URL`. Example with custom namespace: ```javascript import { v5 as uuidv5 } from 'uuid'; // Define a custom namespace. Readers, create your own using something like // https://www.uuidgenerator.net/ const MY_NAMESPACE = '1b671a64-40d5-491e-99b0-da01ff1f3341'; uuidv5('Hello, World!', MY_NAMESPACE); // ⇨ '630eb68f-e0fa-5ecc-887a-7c7a62614681' ``` Example with RFC `URL` namespace: ```javascript import { v5 as uuidv5 } from 'uuid'; uuidv5('https://www.w3.org/', uuidv5.URL); // ⇨ 'c106a26a-21bb-5538-8bf2-57095d1976c1' ``` ### uuid.validate(str) Test a string to see if it is a valid UUID | | | | --------- | --------------------------------------------------- | | `str` | `String` to validate | | _returns_ | `true` if string is a valid UUID, `false` otherwise | Example: ```javascript import { validate as uuidValidate } from 'uuid'; uuidValidate('not a UUID'); // ⇨ false uuidValidate('6ec0bd7f-11c0-43da-975e-2a8ad9ebae0b'); // ⇨ true ``` Using `validate` and `version` together it is possible to do per-version validation, e.g. validate for only v4 UUIds. ```javascript import { version as uuidVersion } from 'uuid'; import { validate as uuidValidate } from 'uuid'; function uuidValidateV4(uuid) { return uuidValidate(uuid) && uuidVersion(uuid) === 4; } const v1Uuid = 'd9428888-122b-11e1-b85c-61cd3cbb3210'; const v4Uuid = '109156be-c4fb-41ea-b1b4-efe1671c5836'; uuidValidateV4(v4Uuid); // ⇨ true uuidValidateV4(v1Uuid); // ⇨ false ``` ### uuid.version(str) Detect RFC version of a UUID | | | | --------- | ---------------------------------------- | | `str` | A valid UUID `String` | | _returns_ | `Number` The RFC version of the UUID | | _throws_ | `TypeError` if `str` is not a valid UUID | Example: ```javascript import { version as uuidVersion } from 'uuid'; uuidVersion('45637ec4-c85f-11ea-87d0-0242ac130003'); // ⇨ 1 uuidVersion('6ec0bd7f-11c0-43da-975e-2a8ad9ebae0b'); // ⇨ 4 ``` ## Command Line UUIDs can be generated from the command line using `uuid`. ```shell $ uuid ddeb27fb-d9a0-4624-be4d-4615062daed4 ``` The default is to generate version 4 UUIDS, however the other versions are supported. Type `uuid --help` for details: ```shell $ uuid --help Usage: uuid uuid v1 uuid v3 <name> <namespace uuid> uuid v4 uuid v5 <name> <namespace uuid> uuid --help Note: <namespace uuid> may be "URL" or "DNS" to use the corresponding UUIDs defined by RFC4122 ``` ## ECMAScript Modules This library comes with [ECMAScript Modules](https://www.ecma-international.org/ecma-262/6.0/#sec-modules) (ESM) support for Node.js versions that support it ([example](./examples/node-esmodules/)) as well as bundlers like [rollup.js](https://rollupjs.org/guide/en/#tree-shaking) ([example](./examples/browser-rollup/)) and [webpack](https://webpack.js.org/guides/tree-shaking/) ([example](./examples/browser-webpack/)) (targeting both, Node.js and browser environments). ```javascript import { v4 as uuidv4 } from 'uuid'; uuidv4(); // ⇨ '1b9d6bcd-bbfd-4b2d-9b5d-ab8dfbbd4bed' ``` To run the examples you must first create a dist build of this library in the module root: ```shell npm run build ``` ## CDN Builds ### ECMAScript Modules To load this module directly into modern browsers that [support loading ECMAScript Modules](https://caniuse.com/#feat=es6-module) you can make use of [jspm](https://jspm.org/): ```html <script type="module"> import { v4 as uuidv4 } from 'https://jspm.dev/uuid'; console.log(uuidv4()); // ⇨ '1b9d6bcd-bbfd-4b2d-9b5d-ab8dfbbd4bed' </script> ``` ### UMD To load this module directly into older browsers you can use the [UMD (Universal Module Definition)](https://github.com/umdjs/umd) builds from any of the following CDNs: **Using [UNPKG](https://unpkg.com/uuid@latest/dist/umd/)**: ```html <script src="https://unpkg.com/uuid@latest/dist/umd/uuidv4.min.js"></script> ``` **Using [jsDelivr](https://cdn.jsdelivr.net/npm/uuid@latest/dist/umd/)**: ```html <script src="https://cdn.jsdelivr.net/npm/uuid@latest/dist/umd/uuidv4.min.js"></script> ``` **Using [cdnjs](https://cdnjs.com/libraries/uuid)**: ```html <script src="https://cdnjs.cloudflare.com/ajax/libs/uuid/8.1.0/uuidv4.min.js"></script> ``` These CDNs all provide the same [`uuidv4()`](#uuidv4options-buffer-offset) method: ```html <script> uuidv4(); // ⇨ '55af1e37-0734-46d8-b070-a1e42e4fc392' </script> ``` Methods for the other algorithms ([`uuidv1()`](#uuidv1options-buffer-offset), [`uuidv3()`](#uuidv3name-namespace-buffer-offset) and [`uuidv5()`](#uuidv5name-namespace-buffer-offset)) are available from the files `uuidv1.min.js`, `uuidv3.min.js` and `uuidv5.min.js` respectively. ## "getRandomValues() not supported" This error occurs in environments where the standard [`crypto.getRandomValues()`](https://developer.mozilla.org/en-US/docs/Web/API/Crypto/getRandomValues) API is not supported. This issue can be resolved by adding an appropriate polyfill: ### React Native / Expo 1. Install [`react-native-get-random-values`](https://github.com/LinusU/react-native-get-random-values#readme) 1. Import it _before_ `uuid`. Since `uuid` might also appear as a transitive dependency of some other imports it's safest to just import `react-native-get-random-values` as the very first thing in your entry point: ```javascript import 'react-native-get-random-values'; import { v4 as uuidv4 } from 'uuid'; ``` Note: If you are using Expo, you must be using at least `react-native-get-random-values@1.5.0` and `expo@39.0.0`. ### Web Workers / Service Workers (Edge <= 18) [In Edge <= 18, Web Crypto is not supported in Web Workers or Service Workers](https://caniuse.com/#feat=cryptography) and we are not aware of a polyfill (let us know if you find one, please). ## Upgrading From `uuid@7.x` ### Only Named Exports Supported When Using with Node.js ESM `uuid@7.x` did not come with native ECMAScript Module (ESM) support for Node.js. Importing it in Node.js ESM consequently imported the CommonJS source with a default export. This library now comes with true Node.js ESM support and only provides named exports. Instead of doing: ```javascript import uuid from 'uuid'; uuid.v4(); ``` you will now have to use the named exports: ```javascript import { v4 as uuidv4 } from 'uuid'; uuidv4(); ``` ### Deep Requires No Longer Supported Deep requires like `require('uuid/v4')` [which have been deprecated in `uuid@7.x`](#deep-requires-now-deprecated) are no longer supported. ## Upgrading From `uuid@3.x` "_Wait... what happened to `uuid@4.x` - `uuid@6.x`?!?_" In order to avoid confusion with RFC [version 4](#uuidv4options-buffer-offset) and [version 5](#uuidv5name-namespace-buffer-offset) UUIDs, and a possible [version 6](http://gh.peabody.io/uuidv6/), releases 4 thru 6 of this module have been skipped. ### Deep Requires Now Deprecated `uuid@3.x` encouraged the use of deep requires to minimize the bundle size of browser builds: ```javascript const uuidv4 = require('uuid/v4'); // <== NOW DEPRECATED! uuidv4(); ``` As of `uuid@7.x` this library now provides ECMAScript modules builds, which allow packagers like Webpack and Rollup to do "tree-shaking" to remove dead code. Instead, use the `import` syntax: ```javascript import { v4 as uuidv4 } from 'uuid'; uuidv4(); ``` ... or for CommonJS: ```javascript const { v4: uuidv4 } = require('uuid'); uuidv4(); ``` ### Default Export Removed `uuid@3.x` was exporting the Version 4 UUID method as a default export: ```javascript const uuid = require('uuid'); // <== REMOVED! ``` This usage pattern was already discouraged in `uuid@3.x` and has been removed in `uuid@7.x`. ---- Markdown generated from [README_js.md](README_js.md) by [](https://github.com/broofa/runmd) # is-yarn-global [](https://travis-ci.org/LitoMore/is-yarn-global) [](https://www.npmjs.com/package/is-yarn-global) [](https://github.com/LitoMore/is-yarn-global/blob/master/LICENSE) [](https://github.com/sindresorhus/xo) Check if installed by yarn globally without any `fs` calls ## Install ```bash $ npm install is-yarn-global ``` ## Usage Just require it in your package. ```javascript const isYarnGlobal = require('is-yarn-global'); console.log(isYarnGlobal()); ``` ## License MIT © [LitoMore](https://github.com/LitoMore) # create-hmac [](https://www.npmjs.org/package/create-hmac) [](https://travis-ci.org/crypto-browserify/createHmac) [](https://david-dm.org/crypto-browserify/createHmac#info=dependencies) [](https://github.com/feross/standard) Node style HMACs for use in the browser, with native HMAC functions in node. API is the same as HMACs in node: ```js var createHmac = require('create-hmac') var hmac = createHmac('sha224', Buffer.from('secret key')) hmac.update('synchronous write') //optional encoding parameter hmac.digest() // synchronously get result with optional encoding parameter hmac.write('write to it as a stream') hmac.end() //remember it's a stream hmac.read() //only if you ended it as a stream though ``` # isexe Minimal module to check if a file is executable, and a normal file. Uses `fs.stat` and tests against the `PATHEXT` environment variable on Windows. ## USAGE ```javascript var isexe = require('isexe') isexe('some-file-name', function (err, isExe) { if (err) { console.error('probably file does not exist or something', err) } else if (isExe) { console.error('this thing can be run') } else { console.error('cannot be run') } }) // same thing but synchronous, throws errors var isExe = isexe.sync('some-file-name') // treat errors as just "not executable" isexe('maybe-missing-file', { ignoreErrors: true }, callback) var isExe = isexe.sync('maybe-missing-file', { ignoreErrors: true }) ``` ## API ### `isexe(path, [options], [callback])` Check if the path is executable. If no callback provided, and a global `Promise` object is available, then a Promise will be returned. Will raise whatever errors may be raised by `fs.stat`, unless `options.ignoreErrors` is set to true. ### `isexe.sync(path, [options])` Same as `isexe` but returns the value and throws any errors raised. ### Options * `ignoreErrors` Treat all errors as "no, this is not executable", but don't raise them. * `uid` Number to use as the user id * `gid` Number to use as the group id * `pathExt` List of path extensions to use instead of `PATHEXT` environment variable on Windows. # is-number [](https://www.npmjs.com/package/is-number) [](https://npmjs.org/package/is-number) [](https://npmjs.org/package/is-number) [](https://travis-ci.org/jonschlinkert/is-number) > Returns true if the value is a finite number. Please consider following this project's author, [Jon Schlinkert](https://github.com/jonschlinkert), and consider starring the project to show your :heart: and support. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save is-number ``` ## Why is this needed? In JavaScript, it's not always as straightforward as it should be to reliably check if a value is a number. It's common for devs to use `+`, `-`, or `Number()` to cast a string value to a number (for example, when values are returned from user input, regex matches, parsers, etc). But there are many non-intuitive edge cases that yield unexpected results: ```js console.log(+[]); //=> 0 console.log(+''); //=> 0 console.log(+' '); //=> 0 console.log(typeof NaN); //=> 'number' ``` This library offers a performant way to smooth out edge cases like these. ## Usage ```js const isNumber = require('is-number'); ``` See the [tests](./test.js) for more examples. ### true ```js isNumber(5e3); // true isNumber(0xff); // true isNumber(-1.1); // true isNumber(0); // true isNumber(1); // true isNumber(1.1); // true isNumber(10); // true isNumber(10.10); // true isNumber(100); // true isNumber('-1.1'); // true isNumber('0'); // true isNumber('012'); // true isNumber('0xff'); // true isNumber('1'); // true isNumber('1.1'); // true isNumber('10'); // true isNumber('10.10'); // true isNumber('100'); // true isNumber('5e3'); // true isNumber(parseInt('012')); // true isNumber(parseFloat('012')); // true ``` ### False Everything else is false, as you would expect: ```js isNumber(Infinity); // false isNumber(NaN); // false isNumber(null); // false isNumber(undefined); // false isNumber(''); // false isNumber(' '); // false isNumber('foo'); // false isNumber([1]); // false isNumber([]); // false isNumber(function () {}); // false isNumber({}); // false ``` ## Release history ### 7.0.0 * Refactor. Now uses `.isFinite` if it exists. * Performance is about the same as v6.0 when the value is a string or number. But it's now 3x-4x faster when the value is not a string or number. ### 6.0.0 * Optimizations, thanks to @benaadams. ### 5.0.0 **Breaking changes** * removed support for `instanceof Number` and `instanceof String` ## Benchmarks As with all benchmarks, take these with a grain of salt. See the [benchmarks](./benchmark/index.js) for more detail. ``` # all v7.0 x 413,222 ops/sec ±2.02% (86 runs sampled) v6.0 x 111,061 ops/sec ±1.29% (85 runs sampled) parseFloat x 317,596 ops/sec ±1.36% (86 runs sampled) fastest is 'v7.0' # string v7.0 x 3,054,496 ops/sec ±1.05% (89 runs sampled) v6.0 x 2,957,781 ops/sec ±0.98% (88 runs sampled) parseFloat x 3,071,060 ops/sec ±1.13% (88 runs sampled) fastest is 'parseFloat,v7.0' # number v7.0 x 3,146,895 ops/sec ±0.89% (89 runs sampled) v6.0 x 3,214,038 ops/sec ±1.07% (89 runs sampled) parseFloat x 3,077,588 ops/sec ±1.07% (87 runs sampled) fastest is 'v6.0' ``` ## About <details> <summary><strong>Contributing</strong></summary> Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). </details> <details> <summary><strong>Running Tests</strong></summary> Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` </details> <details> <summary><strong>Building docs</strong></summary> _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` </details> ### Related projects You might also be interested in these projects: * [is-plain-object](https://www.npmjs.com/package/is-plain-object): Returns true if an object was created by the `Object` constructor. | [homepage](https://github.com/jonschlinkert/is-plain-object "Returns true if an object was created by the `Object` constructor.") * [is-primitive](https://www.npmjs.com/package/is-primitive): Returns `true` if the value is a primitive. | [homepage](https://github.com/jonschlinkert/is-primitive "Returns `true` if the value is a primitive. ") * [isobject](https://www.npmjs.com/package/isobject): Returns true if the value is an object and not an array or null. | [homepage](https://github.com/jonschlinkert/isobject "Returns true if the value is an object and not an array or null.") * [kind-of](https://www.npmjs.com/package/kind-of): Get the native type of a value. | [homepage](https://github.com/jonschlinkert/kind-of "Get the native type of a value.") ### Contributors | **Commits** | **Contributor** | | --- | --- | | 49 | [jonschlinkert](https://github.com/jonschlinkert) | | 5 | [charlike-old](https://github.com/charlike-old) | | 1 | [benaadams](https://github.com/benaadams) | | 1 | [realityking](https://github.com/realityking) | ### Author **Jon Schlinkert** * [LinkedIn Profile](https://linkedin.com/in/jonschlinkert) * [GitHub Profile](https://github.com/jonschlinkert) * [Twitter Profile](https://twitter.com/jonschlinkert) ### License Copyright © 2018, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT License](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.6.0, on June 15, 2018._

near_near-discovery-indexer

.github ISSUE_TEMPLATE BOUNTY.yml README.md example-indexer Cargo.toml README.md diesel.toml migrations 2022-03-18-000000_initial_scam down.sql up.sql 2022-10-10-000000_add_receipts down.sql up.sql src main.rs models enums.rs events.rs mod.rs social.rs retriable.rs schema.rs

# example-indexer This repository contains finished code for Indexer tutorial from official docs https://docs.near.org/docs/tools/near-indexer # Indexer tutorials This repository contains the code for indexer tutorials from official documentation. ## Contents * example-indexer https://docs.near.org/docs/tools/near-indexer # example-indexer This repository contains finished code for Indexer tutorial from official docs https://docs.near.org/docs/tools/near-indexer # Indexer tutorials This repository contains the code for indexer tutorials from official documentation. ## Contents * example-indexer https://docs.near.org/docs/tools/near-indexer

kamalbuilds_Near-StoreHub

.gitpod.yml README.md nftitem-contract Cargo.toml build.bat build.sh src approval.rs enumeration.rs events.rs external.rs internal.rs lib.rs metadata.rs mint.rs nft_core.rs royalty.rs test.sh package-lock.json package.json public index.html src App.css App.js Close.js Modal.js Sale.js assets near-logo.svg config.js fonts OFL.txt README.txt index.html index.js useModal.js store-contract Cargo.toml README.md build.bat build.sh src external.rs internal.rs lib.rs nft_callbacks.rs sale.rs sale_views.rs

# StoreSetup on Near Relevant Contract Deployment Links Initial Deployments Store - https://explorer.testnet.near.org/transactions/FU5nmCmZzXB78Jh9Canzqt1kWVLtu7ALAUaDeAXcjDum Market - https://explorer.testnet.near.org/transactions/9MiT4Ut98kTJr48t8EUby6cjRSzUgr3sqCqJXB9acsHg Store Init - https://explorer.testnet.near.org/transactions/BdguewH5q7CVdKCaR6tY95vKUn2Z2qiJqURP5cACsPek Bangle listed - https://explorer.testnet.near.org/transactions/4yj1eZ5WppwTmJxU1BXJkMnzdiuAjSupHvjvgMknze3h Market Deployed https://explorer.testnet.near.org/transactions/4egq1T3LmArvKsVXHhDeDAbhWoALAVKowsp1DmC1hQnG Initialised - https://explorer.testnet.near.org/transactions/86cdGKwEXBYuFxyMH38WY3MUYw7SiuGHp1BxTYA6P9P Key Features: - NFT-Backed Stores: Empower merchants to tokenize their physical assets as NFTs and seamlessly set up their stores on the NEAR blockchain. - Decentralized Marketplace: A groundbreaking marketplace where NFT-backed products are bought and sold directly, removing intermediaries and reducing costs. - Blockchain Operating System Integration: Built on the innovative BOS, offering a fully decentralized frontend experience that ensures transparency and security. - Global Accessibility: Enable merchants and users from all corners of the world to participate in frictionless real-world asset trading using NEAR's high-speed and low-cost blockchain. - Immutable Ownership: NFTs on NEAR's blockchain guarantee secure and immutable ownership records, preventing fraud and ensuring genuine transactions. The NFTCommerce application powered by NEAR's blockchain and the revolutionary Blockchain Operating System has the potential to redefine how real-world assets are traded and owned. By enabling merchants to tokenize their assets as NFTs, the platform ensures transparency, trust, and security in transactions. The decentralized marketplace eliminates unnecessary intermediaries, reducing costs and enhancing the merchant-to-consumer connection. The integration of the Blockchain Operating System empowers developers to create and deploy applications efficiently, with the added advantage of on-chain source code publication. This approach enhances accountability and supports the growth of a thriving decentralized ecosystem. NFTCommerce drives the adoption of NEAR's blockchain, tapping into its high-speed and cost-effective features to facilitate global asset exchange. In the rapidly evolving landscape of blockchain technology, NFTCommerce stands out as a pioneering solution, revolutionizing real-world asset transactions and contributing to the wider adoption of decentralized applications on the NEAR ecosystem. Challenges I ran into I ran into various challenges like building up the contract and frontend, Then decentralising the frontend using BOS. # TBD

kunal266_pumpkin_carv

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run-build-script-build-script-build.json wee_alloc-adb071298af20a95 lib-wee_alloc.json build num-bigint-cf5799adc943a33e out radix_bases.rs typenum-5bdf061afe46b05e out consts.rs op.rs tests.rs wee_alloc-87427b00e2478ff4 out wee_alloc_static_array_backend_size_bytes.txt release .fingerprint ahash-5733d2af5ab642f9 lib-ahash.json aho-corasick-358cd9fc49fc208f lib-aho_corasick.json base64-0ed85d98192b35cb lib-base64.json block-buffer-1e4e2337592206e5 lib-block-buffer.json block-buffer-c54763f257b15dd1 lib-block-buffer.json block-padding-c555c563296295f4 lib-block-padding.json borsh-beb3e822996c2cb4 lib-borsh.json bs58-41d69aa5ea2113ca lib-bs58.json byte-tools-fb87ed39c08375ce lib-byte-tools.json byteorder-0c3b7b13740da921 lib-byteorder.json byteorder-405f574730de3eef run-build-script-build-script-build.json cfg-if-b071a0b2275e82e2 lib-cfg-if.json cfg-if-d5346bc0bf7330e8 lib-cfg-if.json digest-0d4237bf4d9c1a6a lib-digest.json digest-adac54607d80ee38 lib-digest.json 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near-vm-errors-8abc13bf4c874e4c lib-near-vm-errors.json near-vm-logic-27a1fbe8540f5631 lib-near-vm-logic.json num-bigint-5f3184d31ccdc4aa lib-num-bigint.json num-bigint-edd88df40ad0adeb run-build-script-build-script-build.json num-integer-3caf5a2e1cd3ffa6 run-build-script-build-script-build.json num-integer-80774b99740e0f81 lib-num-integer.json num-rational-461cc94cc1251d94 run-build-script-build-script-build.json num-rational-9439f578daeff963 lib-num-rational.json num-traits-542afd3e0b9f4731 run-build-script-build-script-build.json num-traits-d764c2a26c748628 lib-num-traits.json opaque-debug-e7c6e45d0f6dbcbc lib-opaque-debug.json opaque-debug-fbd12b4a5adf74d4 lib-opaque-debug.json regex-c45e85a87d9d3aa2 lib-regex.json regex-syntax-4308c62ce412d750 lib-regex-syntax.json ryu-17d9881e571cdd4b lib-ryu.json ryu-6c0eafb381d8ef83 run-build-script-build-script-build.json serde-8cfb315b6ee116ce lib-serde.json serde-a8f4a3c392c64d21 run-build-script-build-script-build.json serde_json-c74861dd6cf40b64 run-build-script-build-script-build.json serde_json-dd836d1a69b1c32b lib-serde_json.json sha2-e06d4e2ca3f7096b lib-sha2.json sha3-7e8ddc190e555192 lib-sha3.json typenum-4acd3ba97586d824 lib-typenum.json typenum-55ff30b9565f0355 run-build-script-build-script-main.json wee_alloc-2b2eac064dc92512 run-build-script-build-script-build.json wee_alloc-c61199675b501834 lib-wee_alloc.json build num-bigint-edd88df40ad0adeb out radix_bases.rs typenum-55ff30b9565f0355 out consts.rs op.rs tests.rs wee_alloc-2b2eac064dc92512 out wee_alloc_static_array_backend_size_bytes.txt neardev shared-test-staging test.near.json shared-test test.near.json package.json src App.js Components Home.js Mintnft.js exmaple.js mynft.js __mocks__ fileMock.js assets logo-black.svg logo-white.svg config.js global.css http-common.js index.html index.js jest.init.js main.test.js services FileUploadService.js utils.js wallet login index.html supas.sh

pumpblock ================== This [React] app was initialized with [create-near-app] Quick Start =========== To run this project locally: 1. Prerequisites: Make sure you've installed [Node.js] ≥ 12 2. Install dependencies: `yarn install` 3. Run the local development server: `yarn dev` (see `package.json` for a full list of `scripts` you can run with `yarn`) Now you'll have a local development environment backed by the NEAR TestNet! Go ahead and play with the app and the code. As you make code changes, the app will automatically reload. Exploring The Code ================== 1. The "backend" code lives in the `/contract` folder. See the README there for more info. 2. The frontend code lives in the `/src` folder. `/src/index.html` is a great place to start exploring. Note that it loads in `/src/index.js`, where you can learn how the frontend connects to the NEAR blockchain. 3. Tests: there are different kinds of tests for the frontend and the smart contract. See `contract/README` for info about how it's tested. The frontend code gets tested with [jest]. You can run both of these at once with `yarn run test`. Deploy ====== Every smart contract in NEAR has its [own associated account][NEAR accounts]. When you run `yarn dev`, your smart contract gets deployed to the live NEAR TestNet with a throwaway account. When you're ready to make it permanent, here's how. Step 0: Install near-cli (optional) ------------------------------------- [near-cli] is a command line interface (CLI) for interacting with the NEAR blockchain. It was installed to the local `node_modules` folder when you ran `yarn install`, but for best ergonomics you may want to install it globally: yarn install --global near-cli Or, if you'd rather use the locally-installed version, you can prefix all `near` commands with `npx` Ensure that it's installed with `near --version` (or `npx near --version`) Step 1: Create an account for the contract ------------------------------------------ Each account on NEAR can have at most one contract deployed to it. If you've already created an account such as `your-name.testnet`, you can deploy your contract to `pumpblock.your-name.testnet`. Assuming you've already created an account on [NEAR Wallet], here's how to create `pumpblock.your-name.testnet`: 1. Authorize NEAR CLI, following the commands it gives you: near login 2. Create a subaccount (replace `YOUR-NAME` below with your actual account name): near create-account pumpblock.YOUR-NAME.testnet --masterAccount YOUR-NAME.testnet Step 2: set contract name in code --------------------------------- Modify the line in `src/config.js` that sets the account name of the contract. Set it to the account id you used above. const CONTRACT_NAME = process.env.CONTRACT_NAME || 'pumpblock.YOUR-NAME.testnet' Step 3: deploy! --------------- One command: yarn deploy As you can see in `package.json`, this does two things: 1. builds & deploys smart contract to NEAR TestNet 2. builds & deploys frontend code to GitHub using [gh-pages]. This will only work if the project already has a repository set up on GitHub. Feel free to modify the `deploy` script in `package.json` to deploy elsewhere. Troubleshooting =============== On Windows, if you're seeing an error containing `EPERM` it may be related to spaces in your path. Please see [this issue](https://github.com/zkat/npx/issues/209) for more details. [React]: https://reactjs.org/ [create-near-app]: https://github.com/near/create-near-app [Node.js]: https://nodejs.org/en/download/package-manager/ [jest]: https://jestjs.io/ [NEAR accounts]: https://docs.near.org/docs/concepts/account [NEAR Wallet]: https://wallet.testnet.near.org/ [near-cli]: https://github.com/near/near-cli [gh-pages]: https://github.com/tschaub/gh-pages pumpblock Smart Contract ================== A [smart contract] written in [Rust] for an app initialized with [create-near-app] Quick Start =========== Before you compile this code, you will need to install Rust with [correct target] Exploring The Code ================== 1. The main smart contract code lives in `src/lib.rs`. You can compile it with the `./compile` script. 2. Tests: You can run smart contract tests with the `./test` script. This runs standard Rust tests using [cargo] with a `--nocapture` flag so that you can see any debug info you print to the console. [smart contract]: https://docs.near.org/docs/develop/contracts/overview [Rust]: https://www.rust-lang.org/ [create-near-app]: https://github.com/near/create-near-app [correct target]: https://github.com/near/near-sdk-rs#pre-requisites [cargo]: https://doc.rust-lang.org/book/ch01-03-hello-cargo.html

max-mainnet_ref-orderly-trading-view

README.md package.json postcss.config.js public index.html manifest.json robots.txt src App.css components AllOrders state.ts AssetModal state.ts ChartHeader state.ts UserBoard state.ts config.ts datafeed helpers.ts index.ts streaming.ts near.ts orderly api.ts constant.ts error.ts off-chain-api.ts off-chain-ws.ts on-chain-api.ts state.ts type.ts utils.ts react-app-env.d.ts serviceWorker.ts setupTests.ts styles tailwind.css utiles.ts tailwind.config.js tsconfig.json

# REF <> ORDERLY

peekpi_RainbowWars-Assembly

.dependabot config.yml .gitpod.yml .travis.yml README-Gitpod.md README.md as-pect.config.js asconfig.js assembly MPT.ts RlpReader.ts Solidity.ts __tests__ as-pect.d.ts context.json main.spec.ts as_types.d.ts main.ts model.ts tsconfig.json neardev shared-test-staging test.near.json shared-test test.near.json package.json src config.js index.html loader.html main.js test-setup.js test.js

# RainbowWars AssemblyScript Contract ## Description RainbowWars is a cross-chain game. Here is the [description][describe] and [demo][demo]. This is the near contract for RainbowWars. The RainbowWars project consists of three parts: - [ethereum solidity contract][ethcontract] - [near assembly contract][nearcontract] - [vue frontend][frontend] > This repo was ported from [near-Counter][counter] demo. Only use the assembly contract part, please ignore the front-end part. ## Setup Install dependencies: ``` yarn ``` Make sure you have `near-cli` by running: ``` near --version ``` If you need to install `near-cli`: ``` npm install near-cli -g ``` ## Modify the contract code Modify the `assembly/main.ts`, changing the `otherSideBridge` to your ethereum Contract Address: ``` ... const otherSideBridge:u256 = str2u256('ETH CONTRACT ADDRESS'); ... ``` ## Compilation ``` yarn build ``` ## Deployment 1. login your near account ··· near login ··· 2. deploy the contract ``` near deploy ``` [counter]: https://github.com/near-examples/counter [demo]: https://peekpi.github.io/RainbowWars/dist [ethcontract]: https://github.com/peekpi/RainbowWars-Solidity [nearcontract]: https://github.com/peekpi/RainbowWars-Assembly [frontend]: https://github.com/peekpi/RainbowWars-Vue [describe]: https://github.com/peekpi/RainbowWars

iyidaclem_AssemblyScriptContract

.gitpod.yml README.md asconfig.json assembly index.ts package.json

# AssemblyScriptContract Smartcontract development using assembly script and rust

near_near-discovery

commitlint.config.js next.config.js public blog category a-post-from-illia-polosukhin index.html case-studies index.html page 2 index.html 3 index.html community index.html page 10 index.html 11 index.html 12 index.html 13 index.html 14 index.html 15 index.html 16 index.html 17 index.html 18 index.html 19 index.html 2 index.html 20 index.html 21 index.html 22 index.html 23 index.html 24 index.html 25 index.html 26 index.html 3 index.html 4 index.html 5 index.html 6 index.html 7 index.html 8 index.html 9 index.html developers index.html page 2 index.html 3 index.html 4 index.html 5 index.html 6 index.html 7 index.html 8 index.html 9 index.html near-foundation index.html page 10 index.html 11 index.html 12 index.html 13 index.html 14 index.html 15 index.html 16 index.html 17 index.html 18 index.html 19 index.html 2 index.html 20 index.html 21 index.html 22 index.html 23 index.html 3 index.html 4 index.html 5 index.html 6 index.html 7 index.html 8 index.html 9 index.html uncategorized 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index.html technical index.html press-releases bitcoin-suisse-announces-full-support-of-near-for-institutional-investors index.html fireblocks-provides-custody-facility-for-institutional-investors-on-near index.html marieke-flament-appointed-ceo-of-near-foundation index.html mintbase-raises-7-5-million-in-series-a-and-5-million-grant-pool-to-pioneer-nft-infrastructure index.html near-and-circle-announce-usdc-support-for-multi-chain-ecosystem index.html near-foundation-and-forkast-unveil-shortlist-for-women-in-web3-changemakers-2022 index.html near-launches-regional-hub-in-kenya-to-lead-blockchain-innovation-and-talent-development-in-africa index.html near-launches-web3-regional-hub-in-korea index.html near-opens-submissions-for-women-in-web3-changemakers-2022 index.html near-protocol-enhances-its-ecosystem-with-nep-141-integration-on-binance-custody index.html near-releases-javascript-sdk-bringing-web3-to-20-million-developers index.html near-teams-with-google-cloud-to-accelerate-web3-startups index.html near-wallet-users-soar-to-20-million index.html sailgp-and-near-unveil-multi-year-global-league-partnership index.html tag accelerator index.html account-aggregation index.html ai-is-near index.html ai index.html alex-skidanov index.html alibaba-cloud index.html alpha-near-org index.html analytics index.html arbitrum index.html art index.html arterra-labs index.html artificial-intelligence index.html aurora-cloud index.html aurora-labs index.html aurora index.html b-o-s-web-push-notifications index.html b-o-s index.html berklee-college-of-music index.html berklee-raidar index.html bernoulli-locke index.html bigquery index.html blockchain-operating-system index.html blockchain index.html bora index.html bos index.html page 2 index.html captains-call index.html case-study index.html cathy-hackl index.html chain-abstraction index.html circle index.html coin98-super-app index.html coinbase index.html coingecko-raffle index.html collision index.html communication index.html community index.html page 2 index.html 3 index.html competition index.html consensus index.html core-protocol index.html page 2 index.html cosmose-ai index.html creatives index.html cricket-world-cup-2023 index.html daos index.html page 2 index.html decentralized-storage index.html defi index.html dev-rel index.html developer-tools index.html developers index.html dropt index.html ecosystem-funding index.html ecosystem index.html page 2 index.html 3 index.html 4 index.html 5 index.html 6 index.html 7 index.html 8 index.html eigen-labs index.html eigenlayer index.html emily-rose-dallara index.html encode-club index.html encode index.html entertainment index.html erica-kang index.html eth-denver index.html ethcc index.html ethdenver index.html ethereum-climate-alliance index.html ethereum-climate-platform index.html ethereum-rollups index.html ethereum index.html events index.html fan-engagement index.html fastauth-sdk index.html fastauth index.html few-and-far index.html fitness index.html flipside index.html founders index.html funding index.html galxe index.html gamefi index.html gaming index.html gig-economy index.html glass index.html governance index.html grants index.html grassroots-support-initiative index.html hackathon index.html horizon index.html i-am-human index.html icc-world-cup index.html icc index.html idos index.html illia-polosukhin index.html indexer index.html infrastructure index.html international-cricket-council index.html inven index.html investments index.html javascript-dapps index.html javascript index.html journey index.html kaikai index.html kaikainow index.html kakao-games index.html knaq index.html lafc index.html ledger-live index.html litenode index.html los-angeles-football-club index.html loyalty index.html machine-learning index.html mantle index.html mass-adoption index.html mastercard index.html media index.html metabuild index.html mintbase index.html mirea-asset index.html mission-vision index.html modularity index.html move-to-earn index.html multichain index.html music-licensing index.html music index.html ncon-bounties index.html ncon index.html ndc-funding index.html ndc index.html ndcfunding index.html near-2023 index.html near-2024 index.html near-apac index.html near-balkans index.html near-big-query index.html near-block-explorers index.html near-da-layer index.html near-da index.html near-data-availability-layer index.html near-day index.html near-digital-collective index.html near-discord index.html near-ecosystem index.html near-foundation-council index.html near-foundation-policy-priorities index.html near-foundation-update index.html near-foundation index.html near-horizon index.html near-in-review index.html near-korea-hub index.html near-korea index.html near-protocol index.html near-query-api index.html near-regional-hubs index.html near-tasks index.html near-vietnam index.html near-wallet-migration index.html near-wallet index.html near index.html nearcon-2023 index.html nearcon-23-3 index.html nearcon-23 index.html nearcon-early-bird-tickets index.html nearcon-highlights index.html nearcon-irl-hackathon index.html nearcon-speakers index.html nearcon index.html page 2 index.html nfts index.html page 2 index.html 3 index.html nightshade index.html okrs index.html onmachina index.html open-web index.html oracles index.html pagoda-product-roadmap index.html pagoda index.html partners index.html partnerships index.html page 2 index.html pipeflare index.html polygon-zkevm index.html press-start index.html press index.html protocol-roadmap index.html public-dataset index.html pyth-price-feeds index.html pyth index.html raidar index.html refer-and-earn index.html regional-hubs index.html research index.html retail index.html rewards index.html richmond-night-market index.html roadmaps index.html rownd index.html sailgp index.html satori index.html self-sovereignty index.html seracle index.html sharding index.html shemaroo index.html shopify index.html shred-sports index.html sk-inc-cc index.html skateboarding index.html space-id-voyage index.html startup-wise-guys index.html stateless-validation index.html statistics index.html sustainability index.html sweat-economy index.html sweat index.html sweatcoin index.html taco-labs index.html tekuno index.html the-dock index.html the-littles index.html thefunpass index.html ticketing index.html transfer-wizard index.html transparency-report index.html transparency index.html uk-crypto-asset-consultation index.html ukraine index.html usdc index.html user-owned-ai index.html validator-delegation index.html veronica-korzh index.html vortex-gaming index.html wallet index.html we-are-developers-world-congress index.html we-are-developers index.html web3-accelerator index.html web3-and-thrive-podcast index.html web3-b2b index.html web3-finance index.html web3-gaming index.html web3-incubation index.html web3-loyalty index.html web3-onboarding index.html women-in-web3-changemakers index.html women-of-web3-changemakers index.html wormhole index.html zero-knowledge index.html zk-proofs index.html унікальна-можливість-для-українців-б index.html push push-notifications.js pwa.js robots.txt src components sandbox Banners BannerOboarding.js VsCodeBanner.js Buttons ForkButton.js OnboardingPublishButton.js OpenCreateButton.js OpenInNewTabButton.js PublishButton.js PublishDraftAsMainButton.js RenameButton.js RenderPreviewButton.js SaveDraftButton.js Mobile MobileBlocker.js Modals AddModal.js CreateModal.js OpenModal.js OpenModuleModal.js RenameModal.js SaveDraft.js index.js Navigation FileTab.js NavigationLeft.js NavigationRight.js index.js NavigationSub index.js OnBoarding OnboardingWelcome.js Step1.js Step10.js Step2.js Step3.js Step4.js Step5.js Step6.js Step7.js Step8.js Step9.js index.js Preview index.js PreviewMetadata index.js Sandbox.js Search index.js TabEditor index.js TabMetadata index.js TabProps index.js Tabs index.js Welcome MainLoader.js index.js css MainWrapper.js utils const.js editor.js onboarding.js

# example-indexer This repository contains finished code for Indexer tutorial from official docs https://docs.near.org/docs/tools/near-indexer # Toast Implemented via Radix primitives: https://www.radix-ui.com/docs/primitives/components/toast _If the current props and Stitches style overrides aren't enough to cover your use case, feel free to implement your own component using the Radix primitives directly._ ## Example Using the `openToast` API allows you to easily open a toast from any context: ```tsx import { openToast } from '@/components/lib/Toast'; ... <Button onClick={() => openToast({ type: 'ERROR', title: 'Toast Title', description: 'This is a great toast description.', }) } > Open a Toast </Button> ``` You can pass other options too: ```tsx <Button onClick={() => openToast({ type: 'SUCCESS', // SUCCESS | INFO | ERROR title: 'Toast Title', description: 'This is a great toast description.', icon: 'ph-bold ph-pizza', // https://phosphoricons.com/ duration: 20000, // milliseconds (pass Infinity to disable auto close) }) } > Open a Toast </Button> ``` ## Deduplicate If you need to ensure only a single instance of a toast is ever displayed at once, you can deduplicate by passing a unique `id` key. If a toast with the passed `id` is currently open, a new toast will not be opened: ```tsx <Button onClick={() => openToast({ id: 'my-unique-toast', title: 'Toast Title', description: 'This is a great toast description.', }) } > Deduplicated Toast </Button> ``` ## Custom Toast If you need something more custom, you can render a custom toast using `lib/Toast/Toaster.tsx` as an example like so: ```tsx import * as Toast from '@/components/lib/Toast'; ... <Toast.Provider duration={5000}> <Toast.Root open={isOpen} onOpenChange={setIsOpen}> <Toast.Title>My Title</Toast.Title> <Toast.Description>My Description</Toast.Description> <Toast.CloseButton /> </Toast.Root> <Toast.Viewport /> </Toast.Provider> ``` # Tooltip Implemented via Radix primitives: https://www.radix-ui.com/docs/primitives/components/tooltip _If the current props and Stitches style overrides aren't enough to cover your use case, feel free to implement your own component using the Radix primitives directly._ ## Example Simply wrap the element you desire to have a tooltip with the `<Tooltip>` component: ```tsx import { Tooltip } from '@/components/lib/Tooltip'; ... <Tooltip content="I am the tooltip message."> <Button>Curious Button</Button> </Tooltip> ``` ## Props To simplify usage of the Radix tooltip primitives, the component abstracts away the need for using `Root`, `Trigger`, and `Content` - all you need to do is use the single `<Tooltip>` component as shown above. To pass a [Root](https://www.radix-ui.com/docs/primitives/components/tooltip#root) option, use the `root={{}}` property like so: ```tsx <Tooltip content="I am the tooltip message." root={{ delayDuration: 500, }} > ... </Tooltip> ``` To pass a [Content](https://www.radix-ui.com/docs/primitives/components/tooltip#content) option, pass it as you normally would like so: ```tsx <Tooltip content="I am the tooltip message." side="left" align="end"> ... </Tooltip> ``` ## Content The `content` prop can be passed a string to render a default message: ```tsx <Tooltip content="I am the tooltip message.">...</Tooltip> ``` A `ReactNode` can also be passed if you want to use a custom set of elements for the message. ```tsx <Tooltip content={ <> <FeatherIcon icon="eye" /> I have an icon. </> } > ... </Tooltip> ``` ## Disabled Sometimes you might need to temporarily disable the tooltip from appearing. You can use the `disabled` prop to prevent the tooltip from showing while still letting the child element be interacted with: ```tsx <Tooltip content="I am the tooltip message." disabled={shouldDisableTooltip}> <Button>Curious Button</Button> </Tooltip> ``` You can also disable the tooltip for touch screens: ```tsx <Tooltip content="I will not show on touch screen devices." disabledTouchScreen> <Button>Curious Button</Button> </Tooltip> ``` # QueryApi Indexers used by components Several components use QueryApi Indexers as a source of data, specifically the ActivityFeed Posts & 'Following' Posts. These indexers can be modified at https://near.org/dataplatform.near/widget/QueryApi.App under the dataplatform.near account. Each indexer has a .sql schema file and a .js file which contains the Indexer Function code. # Feed indexer This indexer holds the top level views used to display the feed. It prevents a circular reference between the social_feed and moderation indexers. The relationships.json file documents the manually created GraphQL relationships used by the feed, in hasura metadata format. At some point QueryApi indexers may support a similar format for declarative relationships. # NEAR Discovery (BOS) ## Setup & Development _This repo requires [pnpm](https://pnpm.io/installation)._ Initialize repo: ``` pnpm i ``` Start development version: ``` pnpm dev ``` ## Local Component Development To start local component development you need to follow this steps: 1. Run commands as mentioned in [Setup & Development](#setup--development). 2. Navigate to [near-discovery-components](https://github.com/near/near-discovery-components) and follow [Local development with BOS-Loader](https://github.com/near/near-discovery-components/blob/develop/CONTRIBUTING.md#local-development-with-bos-loader) section. 3. *(optional)* Make a copy of `".env.example"` called `".env.local"`. **`NEXT_PUBLIC_NETWORK_ID`** allows you to choose working environment. *Note:* The **`NEXT_PUBLIC_NETWORK_ID`** value should be the same as chosen working environment in `near-discovery-components`. More about [environments](https://github.com/near/near-discovery-components/blob/develop/CONTRIBUTING.md#testing-across-multiple-environments). ## Local VM Development > This section needs testing since switch to pnpm If you need to make changes to the VM and test locally, you can easily link your local copy of the VM: 1. Clone the VM repo as a sibling of `near-discovery`: ``` git clone git@github.com:NearSocial/VM.git ``` Folder Structure: ``` /near-discovery /VM ``` 2. Run `pnpm link ../VM` 3. Any time you make changes to the `VM`, run `pnpm build` inside the `VM` project in order for the viewer project to pick up the changes # Near Discovery Components This is a repository that holds the source code of all NEAR discovery components that the team maintains for [near.org](https://near.org). Components will be deployed to production automatically as they are merged into the main branch. This occurs weekly, on Thursdays. Keep in mind that folders under `src` will be prepended to the component name when it's deployed. E.g. `src/post/comment.jsx` will be deployed as `post.comment`. ### Deployments Across Discovery Gateways #### tl;dr; >test.beta.near.org => discom-dev.testnet >test.near.org => discom.testnet >near.org => near TLA >beta.near.org => near TLA The [discovery gateway](https://github.com/near/near-discovery) deploys its main and develop branches across environments as follows - the `main` branch is deployed on [near.org](https://near.org), pointing to `mainnet` and [test.near.org](https://test.near.org) pointing to `testnet` - the `develop` branch is deployed to [beta.near.org](https://beta.near.org), pointing to `mainnet`, and [test.beta.near.org](https://test.beta.near.org), pointing to `testnet` This `discovery-components` repo deploys main and develop branches across accounts as follows - the `main` branch deploys components to the near top-level-acount for `mainnet` and `discom.testnet` for `testnet` except where indicated otherwise in replacements.[mainnet/testnet].json - the `develop` branch deploys components to `discom-dev.testnet` except where indicated otherwise in replacements.dev.json; there is currently no mainnet deployment for the develop branch. ## Contributing Please review the [contribution guide](CONTRIBUTING.md) ## Local Development Please review the [Local development with BOS-Loader](CONTRIBUTING.md#local-development-with-bos-loader) *Note:* This repository is not compatible with the [VS Code Extension](https://docs.near.org/bos/dev/vscode) due to the [replacements](CONTRIBUTING.md#testing-across-multiple-environments) strategy featured in this repository. ## Troubleshooting Deployments `near-social` cli tool will attempt to deploy any updated components with 1 NEAR of deposit and 100 Tgas. The deployment may fail if too many changes are present. There are several solutions for this. You can either plan releases more often or release components in batches from your local using `near-social`. If you get a `Not enough storage balance` error, you will need to make sure that the NEAR account has enough storage staked on the `social.near` contract. You can view the current storage and available storage for any account using `near-cli-rs`: `near-cli contract call-function as-read-only social.near storage_balance_of json-args '{"account_id":"adminalpha.near"}' network-config mainnet now` Note: replace `adminalpha.near` with any other account name on mainnet. You can then stake more of your NEAR for storage on `social.near` using `near-cli-rs`: `near-cli contract call-function as-transaction social.near storage_deposit json-args {} prepaid-gas '100.000 TeraGas' attached-deposit '0.5 NEAR' sign-as adminalpha.near network-config mainnet sign-with-seed-phrase '{{REPLACE_WITH_SEED_PHRASE}}' --seed-phrase-hd-path 'm/44'\''/397'\''/0'\ # Indexer tutorials This repository contains the code for indexer tutorials from official documentation. ## Contents * example-indexer https://docs.near.org/docs/tools/near-indexer # example-indexer This repository contains finished code for Indexer tutorial from official docs https://docs.near.org/docs/tools/near-indexer # Indexer tutorials This repository contains the code for indexer tutorials from official documentation. ## Contents * example-indexer https://docs.near.org/docs/tools/near-indexer

nearprotocol_metanear-src

README.md assembly main.ts model.ts tsconfig.json docs _next static 1baOWWjYGjFufF1Xfb5u3 pages _app.js _error.js index.js start.js chunks 0.js commons.973a0b5e61b989362177.js development dll dll_2011977376de5c4d4cfb.js pages _app.js _error.js index.js start.js jGk_PelwZgY_pxWFNfGWx pages _app.js _error.js index.js start.js runtime main-1eaad13cfef26fe1ff3e.js main.js webpack-f0c6edbea5b547edc23f.js webpack.js webpack 103ac23f505a3906a104.hot-update.json 116b4f9b3a13256c8573.hot-update.json 3a35d8c6e01b2aa1bdbb.hot-update.json 589f8ede9731669ed3a4.hot-update.json 738a169bcb80fef32c51.hot-update.json ca10f704e82a8be5eec8.hot-update.json f1f45b00d10ee4ede098.hot-update.json f616877611dd811c98b5.hot-update.json static development pages index.js.116b4f9b3a13256c8573.hot-update.js index.js.3a35d8c6e01b2aa1bdbb.hot-update.js index.js.589f8ede9731669ed3a4.hot-update.js index.js.738a169bcb80fef32c51.hot-update.js index.js.f1f45b00d10ee4ede098.hot-update.js index.js.f616877611dd811c98b5.hot-update.js index.html start index.html Welcome to debugging React gulpfile.js local_test_environment.js package.json src README.md build_prod.sh next.config.js package.json pages _document.js index.js start.js server.js settings.js test.js

# Greeter example in AssemblyScript ## Description The contract implements a single function to return a greeting. ## To Run on local node Step 1: Create account for the contract and deploy the contract. ``` npm install near create_account --account_id id near deploy --account_id id ``` Step 2: modify src/settings.js line that sets the contractName. Set it to id from step 1. ``` const contractName = "contractId"; /* TODO: fill this in! */ ``` Step 3: Open src/main.html in your browser. That's it! ## To Test ``` npm install npm run-script build npm test ``` ## To Explore - `assembly/main.ts` for the contract code - `src/main.html` for the front-end HTML - `src/main.js` for the JavaScript front-end code and how to integrate contracts - `src/test.js` for the JS tests for the contract Install npm install Local dev: npm run dev Export: npm run build npm run export rm -rf ../docs/_next mv out/* ../docs/

phuonghoang713_HiReactRust

.gitpod.yml README.md babel.config.js contract Cargo.toml README.md compile.js src lib.rs package.json src App.js __mocks__ fileMock.js assets logo-black.svg logo-white.svg config.js global.css index.html index.js jest.init.js main.test.js utils.js wallet login index.html

HiReactRust ================== This [React] app was initialized with [create-near-app] Quick Start =========== To run this project locally: 1. Prerequisites: Make sure you've installed [Node.js] ≥ 12 2. Install dependencies: `yarn install` 3. Run the local development server: `yarn dev` (see `package.json` for a full list of `scripts` you can run with `yarn`) Now you'll have a local development environment backed by the NEAR TestNet! Go ahead and play with the app and the code. As you make code changes, the app will automatically reload. Exploring The Code ================== 1. The "backend" code lives in the `/contract` folder. See the README there for more info. 2. The frontend code lives in the `/src` folder. `/src/index.html` is a great place to start exploring. Note that it loads in `/src/index.js`, where you can learn how the frontend connects to the NEAR blockchain. 3. Tests: there are different kinds of tests for the frontend and the smart contract. See `contract/README` for info about how it's tested. The frontend code gets tested with [jest]. You can run both of these at once with `yarn run test`. Deploy ====== Every smart contract in NEAR has its [own associated account][NEAR accounts]. When you run `yarn dev`, your smart contract gets deployed to the live NEAR TestNet with a throwaway account. When you're ready to make it permanent, here's how. Step 0: Install near-cli (optional) ------------------------------------- [near-cli] is a command line interface (CLI) for interacting with the NEAR blockchain. It was installed to the local `node_modules` folder when you ran `yarn install`, but for best ergonomics you may want to install it globally: yarn install --global near-cli Or, if you'd rather use the locally-installed version, you can prefix all `near` commands with `npx` Ensure that it's installed with `near --version` (or `npx near --version`) Step 1: Create an account for the contract ------------------------------------------ Each account on NEAR can have at most one contract deployed to it. If you've already created an account such as `your-name.testnet`, you can deploy your contract to `HiReactRust.your-name.testnet`. Assuming you've already created an account on [NEAR Wallet], here's how to create `HiReactRust.your-name.testnet`: 1. Authorize NEAR CLI, following the commands it gives you: near login 2. Create a subaccount (replace `YOUR-NAME` below with your actual account name): near create-account HiReactRust.YOUR-NAME.testnet --masterAccount YOUR-NAME.testnet Step 2: set contract name in code --------------------------------- Modify the line in `src/config.js` that sets the account name of the contract. Set it to the account id you used above. const CONTRACT_NAME = process.env.CONTRACT_NAME || 'HiReactRust.YOUR-NAME.testnet' Step 3: deploy! --------------- One command: yarn deploy As you can see in `package.json`, this does two things: 1. builds & deploys smart contract to NEAR TestNet 2. builds & deploys frontend code to GitHub using [gh-pages]. This will only work if the project already has a repository set up on GitHub. Feel free to modify the `deploy` script in `package.json` to deploy elsewhere. Troubleshooting =============== On Windows, if you're seeing an error containing `EPERM` it may be related to spaces in your path. Please see [this issue](https://github.com/zkat/npx/issues/209) for more details. [React]: https://reactjs.org/ [create-near-app]: https://github.com/near/create-near-app [Node.js]: https://nodejs.org/en/download/package-manager/ [jest]: https://jestjs.io/ [NEAR accounts]: https://docs.near.org/docs/concepts/account [NEAR Wallet]: https://wallet.testnet.near.org/ [near-cli]: https://github.com/near/near-cli [gh-pages]: https://github.com/tschaub/gh-pages HiReactRust Smart Contract ================== A [smart contract] written in [Rust] for an app initialized with [create-near-app] Quick Start =========== Before you compile this code, you will need to install Rust with [correct target] Exploring The Code ================== 1. The main smart contract code lives in `src/lib.rs`. You can compile it with the `./compile` script. 2. Tests: You can run smart contract tests with the `./test` script. This runs standard Rust tests using [cargo] with a `--nocapture` flag so that you can see any debug info you print to the console. [smart contract]: https://docs.near.org/docs/develop/contracts/overview [Rust]: https://www.rust-lang.org/ [create-near-app]: https://github.com/near/create-near-app [correct target]: https://github.com/near/near-sdk-rs#pre-requisites [cargo]: https://doc.rust-lang.org/book/ch01-03-hello-cargo.html

NearDeFi_bos-docs

.github workflows build.yml links.yml spellcheck.yml README.md babel.config.js docs Tutorials hello-ethersJS.md hello-lido.md hello-world.md components.md faq.md intro.md quick-start.md vm-api.md docusaurus.config.js mlc_config.json package.json sidebars.js src components HomepageFeatures index.js styles.module.css css custom.css pages index.js index.module.css markdown-page.md static img logo.svg logo_dark.svg undraw_docusaurus_mountain.svg undraw_docusaurus_react.svg undraw_docusaurus_tree.svg

# Website This website is built using [Docusaurus 2](https://docusaurus.io/), a modern static website generator. ### Installation ``` $ yarn ``` ### Local Development ``` $ yarn start ``` This command starts a local development server and opens up a browser window. Most changes are reflected live without having to restart the server. ### Build ``` $ yarn build ``` This command generates static content into the `build` directory and can be served using any static contents hosting service. ### Deployment Using SSH: ``` $ USE_SSH=true yarn deploy ``` Not using SSH: ``` $ GIT_USER=<Your GitHub username> yarn deploy ``` If you are using GitHub pages for hosting, this command is a convenient way to build the website and push to the `gh-pages` branch.

himanigulati01_vote2.0

.gitpod.yml README.md babel.config.js contract README.md as-pect.config.js asconfig.json assembly __tests__ as-pect.d.ts main.spec.ts as_types.d.ts index.ts tsconfig.json compile.js package-lock.json package.json package.json src App.js Components Blog.js Home.js NewPoll.js PollingStation.js SingleBlog.js GenericComponent BlogCard.js BlogContent.js BlogHeader.js Loader.js Loading.css Sidebar.js SingleBlogPost.js sidebar.css singlePost.css __mocks__ fileMock.js assets blockvotelogo.svg loadingcircles.svg logo-black.svg logo-white.svg config.js global.css index.html index.js jest.init.js main.test.js requests getAllBlogsApi.js getSingleBlogApi.js utils.js wallet login index.html

blockvote Smart Contract ================== A [smart contract] written in [AssemblyScript] for an app initialized with [create-near-app] Quick Start =========== Before you compile this code, you will need to install [Node.js] ≥ 12 Exploring The Code ================== 1. The main smart contract code lives in `assembly/index.ts`. You can compile it with the `./compile` script. 2. Tests: You can run smart contract tests with the `./test` script. This runs standard AssemblyScript tests using [as-pect]. [smart contract]: https://docs.near.org/docs/develop/contracts/overview [AssemblyScript]: https://www.assemblyscript.org/ [create-near-app]: https://github.com/near/create-near-app [Node.js]: https://nodejs.org/en/download/package-manager/ [as-pect]: https://www.npmjs.com/package/@as-pect/cli blockvote ================== This [React] app was initialized with [create-near-app] Quick Start =========== To run this project locally: 1. Prerequisites: Make sure you've installed [Node.js] ≥ 12 2. Install dependencies: `yarn install` 3. Run the local development server: `yarn dev` (see `package.json` for a full list of `scripts` you can run with `yarn`) Now you'll have a local development environment backed by the NEAR TestNet! Go ahead and play with the app and the code. As you make code changes, the app will automatically reload. Exploring The Code ================== 1. The "backend" code lives in the `/contract` folder. See the README there for more info. 2. The frontend code lives in the `/src` folder. `/src/index.html` is a great place to start exploring. Note that it loads in `/src/index.js`, where you can learn how the frontend connects to the NEAR blockchain. 3. Tests: there are different kinds of tests for the frontend and the smart contract. See `contract/README` for info about how it's tested. The frontend code gets tested with [jest]. You can run both of these at once with `yarn run test`. Deploy ====== Every smart contract in NEAR has its [own associated account][NEAR accounts]. When you run `yarn dev`, your smart contract gets deployed to the live NEAR TestNet with a throwaway account. When you're ready to make it permanent, here's how. Step 0: Install near-cli (optional) ------------------------------------- [near-cli] is a command line interface (CLI) for interacting with the NEAR blockchain. It was installed to the local `node_modules` folder when you ran `yarn install`, but for best ergonomics you may want to install it globally: yarn install --global near-cli Or, if you'd rather use the locally-installed version, you can prefix all `near` commands with `npx` Ensure that it's installed with `near --version` (or `npx near --version`) Step 1: Create an account for the contract ------------------------------------------ Each account on NEAR can have at most one contract deployed to it. If you've already created an account such as `your-name.testnet`, you can deploy your contract to `blockvote.your-name.testnet`. Assuming you've already created an account on [NEAR Wallet], here's how to create `blockvote.your-name.testnet`: 1. Authorize NEAR CLI, following the commands it gives you: near login 2. Create a subaccount (replace `YOUR-NAME` below with your actual account name): near create-account blockvote.YOUR-NAME.testnet --masterAccount YOUR-NAME.testnet Step 2: set contract name in code --------------------------------- Modify the line in `src/config.js` that sets the account name of the contract. Set it to the account id you used above. const CONTRACT_NAME = process.env.CONTRACT_NAME || 'blockvote.YOUR-NAME.testnet' Step 3: deploy! --------------- One command: yarn deploy As you can see in `package.json`, this does two things: 1. builds & deploys smart contract to NEAR TestNet 2. builds & deploys frontend code to GitHub using [gh-pages]. This will only work if the project already has a repository set up on GitHub. Feel free to modify the `deploy` script in `package.json` to deploy elsewhere. Troubleshooting =============== On Windows, if you're seeing an error containing `EPERM` it may be related to spaces in your path. Please see [this issue](https://github.com/zkat/npx/issues/209) for more details. [React]: https://reactjs.org/ [create-near-app]: https://github.com/near/create-near-app [Node.js]: https://nodejs.org/en/download/package-manager/ [jest]: https://jestjs.io/ [NEAR accounts]: https://docs.near.org/docs/concepts/account [NEAR Wallet]: https://wallet.testnet.near.org/ [near-cli]: https://github.com/near/near-cli [gh-pages]: https://github.com/tschaub/gh-pages # blockvotetutorial2

qstnus_NEARCON2022

.cargo config.toml .idea misc.xml modules.xml vcs.xml Cargo.toml src lib.rs

jon-lewis_ipfs-dev-3

.github ISSUE_TEMPLATE 01_BUG_REPORT.md 02_FEATURE_REQUEST.md 03_CODEBASE_IMPROVEMENT.md 04_SUPPORT_QUESTION.md config.yml PULL_REQUEST_TEMPLATE.md labels.yml workflows codeql.yml deploy-to-console.yml labels.yml lint.yml lock.yml pr-labels.yml stale.yml test.yml README.md contract README.md babel.config.json build.sh check-deploy.sh deploy.sh package-lock.json package.json src contract.ts types.ts tsconfig.json docs CODE_OF_CONDUCT.md CONTRIBUTING.md SECURITY.md frontend .env .eslintrc.json .prettierrc.json README.md constants.ts contracts contract.ts ipfs-contract.ts types.ts ipfs.ts next.config.js package-lock.json package.json postcss.config.js public next.svg thirteen.svg vercel.svg styles globals.css tailwind.config.js tsconfig.json integration-tests package-lock.json package.json src main.ava.ts package-lock.json package.json

This is a [Next.js](https://nextjs.org/) project bootstrapped with [`create-next-app`](https://github.com/vercel/next.js/tree/canary/packages/create-next-app) and [`tailwindcss`](https://tailwindcss.com/docs/guides/nextjs). ## Getting Started First, run the development server: ```bash npm run dev # or yarn dev ``` Open [http://localhost:3000](http://localhost:3000) with your browser to see the result. You can start editing the page by modifying `pages/index.tsx`. The page auto-updates as you edit the file. [API routes](https://nextjs.org/docs/api-routes/introduction) can be accessed on [http://localhost:3000/api/hello](http://localhost:3000/api/hello). This endpoint can be edited in `pages/api/hello.ts`. The `pages/api` directory is mapped to `/api/*`. Files in this directory are treated as [API routes](https://nextjs.org/docs/api-routes/introduction) instead of React pages. This project uses [`next/font`](https://nextjs.org/docs/basic-features/font-optimization) to automatically optimize and load Inter, a custom Google Font. ## Learn More To learn more about Next.js, take a look at the following resources: - [Next.js Documentation](https://nextjs.org/docs) - learn about Next.js features and API. - [Learn Next.js](https://nextjs.org/learn) - an interactive Next.js tutorial. You can check out [the Next.js GitHub repository](https://github.com/vercel/next.js/) - your feedback and contributions are welcome! ## Deploy on Vercel The easiest way to deploy your Next.js app is to use the [Vercel Platform](https://vercel.com/new?utm_medium=default-template&filter=next.js&utm_source=create-next-app&utm_campaign=create-next-app-readme) from the creators of Next.js. Check out our [Next.js deployment documentation](https://nextjs.org/docs/deployment) for more details. <h1 align="center"> <a href="https://github.com/near/boilerplate-template-ipfs"> <picture> <source media="(prefers-color-scheme: dark)" srcset="https://raw.githubusercontent.com/near/boilerplate-template-ipfs/main/docs/images/pagoda_logo_light.png"> <source media="(prefers-color-scheme: light)" srcset="https://raw.githubusercontent.com/near/boilerplate-template-ipfs/main/docs/images/pagoda_logo_dark.png"> <img alt="" src="https://raw.githubusercontent.com/shelegdmitriy/boilerplate-template-ipfs/main/docs/images/pagoda_logo_dark.png"> </picture> </a> </h1> <div align="center"> Boilerplate Template IPFS <br /> <br /> <a href="https://github.com/near/boilerplate-template-ipfs/issues/new?assignees=&labels=bug&template=01_BUG_REPORT.md&title=bug%3A+">Report a Bug</a> · <a href="https://github.com/near/boilerplate-template-ipfs/issues/new?assignees=&labels=enhancement&template=02_FEATURE_REQUEST.md&title=feat%3A+">Request a Feature</a> . <a href="https://github.com/near/boilerplate-template-ipfs/issues/new?assignees=&labels=question&template=04_SUPPORT_QUESTION.md&title=support%3A+">Ask a Question</a> </div> <div align="center"> <br /> [](https://github.com/near/boilerplate-template-ipfs/issues?q=is%3Aissue+is%3Aopen+label%3A%22help+wanted%22) [](https://github.com/near) </div> <details open="open"> <summary>Table of Contents</summary> - [Getting Started](#getting-started) - [Prerequisites](#prerequisites) - [Installation](#installation) - [Usage](#usage) - [Exploring The Code](#exploring-the-code) - [Deploy](#deploy) - [Step 0: Install near-cli (optional)](#step-0-install-near-cli-optional) - [Step 1: Create an account for the contract](#step-1-create-an-account-for-the-contract) - [Step 2: deploy the contract](#step-2-deploy-the-contract) - [Step 3: set contract name in your frontend code](#step-3-set-contract-name-in-your-frontend-code) - [Troubleshooting](#troubleshooting) - [Roadmap](#roadmap) - [Support](#support) - [Project assistance](#project-assistance) - [Contributing](#contributing) - [Authors \& contributors](#authors--contributors) - [Security](#security) </details> --- ## About This project is created for easy-to-start as a React + IPFS skeleton template in the Pagoda Gallery. It was initialized with [create-near-app]. Clone it and start to build your own gallery project! ### Built With [create-near-app], [amazing-github-template](https://github.com/dec0dOS/amazing-github-template) Getting Started ================== ### Prerequisites Make sure you have a [current version of Node.js](https://nodejs.org/en/about/releases/) installed – we are targeting versions `18+`. Read about other [prerequisites](https://docs.near.org/develop/prerequisites) in our docs. ### Installation Install all dependencies: npm install Install IPFS: npm install -g ipfs Initialize IPFS daemon: jsipfs init Allow our clients to talk to our jsipfs instance: jsipfs config --json API.HTTPHeaders.Access-Control-Allow-Origin '["http://localhost:5002", "http://localhost:3000", "https://webui.ipfs.io"]' jsipfs config --json API.HTTPHeaders.Access-Control-Allow-Methods '["PUT", "POST"]' Build your contract: npm run build Deploy your contract to TestNet with a temporary dev account: npm run deploy Usage ===== Test your contract (must use node v16): npm test Start your IPFS daemon: jsipfs daemon Run your frontend in development mode: npm run dev Start your frontend in production mode: npm start Exploring The Code ================== 1. The smart-contract code lives in the `/contract` folder. See the README there for more info. In blockchain apps the smart contract is the "backend" of your app. 2. The frontend code lives in the `/frontend` folder. `/frontend/pages/index.tsx` is a great place to start exploring. Note that it uses `/frontend/contracts/ipfs-contract.ts`, this is your entrypoint to learn how the frontend connects to the NEAR blockchain. Deploy ====== Every smart contract in NEAR has its [own associated account][NEAR accounts]. When you run `npm run deploy`, your smart contract gets deployed to the live NEAR TestNet with a temporary dev account. When you're ready to make it permanent, here's how: Step 0: Install near-cli (optional) ------------------------------------- [near-cli] is a command line interface (CLI) for interacting with the NEAR blockchain. It was installed to the local `node_modules` folder when you ran `npm install`, but for best ergonomics you may want to install it globally: npm install --global near-cli Or, if you'd rather use the locally-installed version, you can prefix all `near` commands with `npx` Ensure that it's installed with `near --version` (or `npx near --version`) Step 1: Create an account for the contract ------------------------------------------ Each account on NEAR can have at most one contract deployed to it. If you've already created an account such as `your-name.testnet`, you can deploy your contract to `near-blank-project.your-name.testnet`. Assuming you've already created an account on [NEAR Wallet], here's how to create `near-blank-project.your-name.testnet`: 1. Authorize NEAR CLI, following the commands it gives you: near login 2. Create a subaccount (replace `YOUR-NAME` below with your actual account name): near create-account near-blank-project.YOUR-NAME.testnet --masterAccount YOUR-NAME.testnet Step 2: deploy the contract --------------------------- Use the CLI to deploy the contract to TestNet with your account ID. Replace `PATH_TO_WASM_FILE` with the `wasm` that was generated in `contract` build directory. near deploy --accountId near-blank-project.YOUR-NAME.testnet --wasmFile PATH_TO_WASM_FILE Step 3: set contract name in your frontend code ----------------------------------------------- Modify `NEXT_PUBLIC_CONTRACT_NAME` in `frontend/.env.local` that sets the account name of the contract. Set it to the account id you used above. NEXT_PUBLIC_CONTRACT_NAME=near-blank-project.YOUR-NAME.testnet Troubleshooting =============== On Windows, if you're seeing an error containing `EPERM` it may be related to spaces in your path. Please see [this issue](https://github.com/zkat/npx/issues/209) for more details. [create-near-app]: https://github.com/near/create-near-app [Node.js]: https://nodejs.org/en/download/package-manager/ [jest]: https://jestjs.io/ [NEAR accounts]: https://docs.near.org/concepts/basics/account [NEAR Wallet]: https://wallet.testnet.near.org/ [near-cli]: https://github.com/near/near-cli [gh-pages]: https://github.com/tschaub/gh-pages ## Roadmap See the [open issues](https://github.com/near/boilerplate-template-ipfs/issues) for a list of proposed features (and known issues). - [Top Feature Requests](https://github.com/near/boilerplate-template-ipfs/issues?q=label%3Aenhancement+is%3Aopen+sort%3Areactions-%2B1-desc) (Add your votes using the 👍 reaction) - [Top Bugs](https://github.com/near/boilerplate-template-ipfs/issues?q=is%3Aissue+is%3Aopen+label%3Abug+sort%3Areactions-%2B1-desc) (Add your votes using the 👍 reaction) - [Newest Bugs](https://github.com/near/boilerplate-template-ipfs/issues?q=is%3Aopen+is%3Aissue+label%3Abug) ## Support Reach out to the maintainer: - [GitHub issues](https://github.com/near/boilerplate-template-ipfs/issues/new?assignees=&labels=question&template=04_SUPPORT_QUESTION.md&title=support%3A+) ## Project assistance If you want to say **thank you** or/and support active development of Boilerplate Template React: - Add a [GitHub Star](https://github.com/near/boilerplate-template-ipfs) to the project. - Tweet about the Boilerplate Template React. - Write interesting articles about the project on [Dev.to](https://dev.to/), [Medium](https://medium.com/) or your personal blog. Together, we can make Boilerplate Template React **better**! ## Contributing First off, thanks for taking the time to contribute! Contributions are what make the open-source community such an amazing place to learn, inspire, and create. Any contributions you make will benefit everybody else and are **greatly appreciated**. Please read [our contribution guidelines](docs/CONTRIBUTING.md), and thank you for being involved! ## Authors & contributors The original setup of this repository is by [Jonathan Lewis](https://github.com/jon-lewis). For a full list of all authors and contributors, see [the contributors page](https://github.com/near/boilerplate-template-ipfs/contributors). ## Security Boilerplate Template React follows good practices of security, but 100% security cannot be assured. Boilerplate Template React is provided **"as is"** without any **warranty**. Use at your own risk. _For more information and to report security issues, please refer to our [security documentation](docs/SECURITY.md)._ # IPFS NEAR Contract The smart contract exposes two methods to enable storing and retrieving a file references in the NEAR network. ```ts @NearBindgen({}) class FilesNear { files: UnorderedMap<File[]> = new UnorderedMap<File[]>("ipfs-files"); @call({}) add_file({ cid, name }: { cid: string; name: string }) { const sender = near.predecessorAccountId(); const senders_files = this.files.get(sender) || []; senders_files.push(new File({ cid, name })); this.files.set(sender, senders_files); } @view({}) get_files({ account_id, from_index = 0, limit = 10, }: { account_id: string; from_index: number; limit: number; }): File[] { const files = this.files.get(account_id); if (!files) { return []; } return files.slice(from_index, from_index + limit); } ``` <br /> # Quickstart 1. Make sure you have installed [node.js](https://nodejs.org/en/download/package-manager/) >= 16. 2. Install the [`NEAR CLI`](https://github.com/near/near-cli#setup) <br /> ## 1. Build and Deploy the Contract You can automatically compile and deploy the contract in the NEAR testnet by running: ```bash npm run deploy ``` Once finished, check the `neardev/dev-account` file to find the address in which the contract was deployed: ```bash cat ./neardev/dev-account # e.g. dev-1659899566943-21539992274727 ``` <br /> ## 2. Retrieve the file references `get_files` is a read-only method (aka `view` method). `View` methods can be called for **free** by anyone, even people **without a NEAR account**! ```bash # Use near-cli to get the greeting near view <dev-account> get_files '{"account_id":"your account id"}' ``` <br /> ## 3. Store a file reference `add_file` changes the contract's state, for which it is a `call` method. `Call` methods can only be invoked using a NEAR account, since the account needs to pay GAS for the transaction. ```bash # Use near-cli to set a new greeting near call <dev-account> add_file '{"cid":"cid", "name": "file name"}' --accountId <dev-account> ``` **Tip:** If you would like to call `add_file` using your own account, first login into NEAR using: ```bash # Use near-cli to login your NEAR account near login ``` and then use the logged account to sign the transaction: `--accountId <your-account>`.

nightfury1111111111_coinmarketcap_fetch_price

Cargo.toml src lib.rs util.rs

kdysq_example-subgraph

.vscode settings.json README.md abis Gravity.json browser-example README.md package.json public index.html manifest.json robots.txt src App.css index.css logo.svg react-app-env.d.ts reportWebVitals.ts setupTests.ts tsconfig.json doc how-to-and-what's-internal.md ref.md docker-compose.yml migrations 1_initial_migration.js 2_deploy_contract.js 3_create_gravatars.js package.json src mapping.ts truffle.js tsconfig.json

# Getting Started with Create React App This project was bootstrapped with [Create React App](https://github.com/facebook/create-react-app). ## Available Scripts In the project directory, you can run: ### `npm start` Runs the app in the development mode.\ Open [http://localhost:3000](http://localhost:3000) to view it in the browser. The page will reload if you make edits.\ You will also see any lint errors in the console. ### `npm test` Launches the test runner in the interactive watch mode.\ See the section about [running tests](https://facebook.github.io/create-react-app/docs/running-tests) for more information. ### `npm run build` Builds the app for production to the `build` folder.\ It correctly bundles React in production mode and optimizes the build for the best performance. The build is minified and the filenames include the hashes.\ Your app is ready to be deployed! See the section about [deployment](https://facebook.github.io/create-react-app/docs/deployment) for more information. ### `npm run eject` **Note: this is a one-way operation. Once you `eject`, you can’t go back!** If you aren’t satisfied with the build tool and configuration choices, you can `eject` at any time. This command will remove the single build dependency from your project. Instead, it will copy all the configuration files and the transitive dependencies (webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except `eject` will still work, but they will point to the copied scripts so you can tweak them. At this point you’re on your own. You don’t have to ever use `eject`. The curated feature set is suitable for small and middle deployments, and you shouldn’t feel obligated to use this feature. However we understand that this tool wouldn’t be useful if you couldn’t customize it when you are ready for it. ## Learn More You can learn more in the [Create React App documentation](https://facebook.github.io/create-react-app/docs/getting-started). To learn React, check out the [React documentation](https://reactjs.org/). # Example NEAR Blocks Subgraph An example to help you get started with NEAR indexing with The Graph. For more information see the docs on https://thegraph.com/docs/supported-networks/near. ## Dev ``` yarn yarn codegen yarn build export GRAPH_TOKEN=your_access_token_of_graph yarn deploy:test ```

neararabic_verified-profile

contract __tests__ as-pect.d.ts index.unit.spec.ts as-pect.config.js asconfig.json assembly as_types.d.ts index.ts tsconfig.json package.json package.json public index.html manifest.json robots.txt src App.css App.js App.test.js components Direct.js Functions.js Splitusers.js Wallet.js admin.js form.js storageconfig.js utils Cover.js config.js functions.js loader.js near.js index.css index.js logo.svg reportWebVitals.js setupTests.js

nearprotocol_exonum_sodiumoxide

.travis.yml Cargo.toml README.md appveyor.yml libsodium-sys Cargo.toml build.rs lib.rs src core.rs crypto_aead_chacha20poly1305.rs crypto_auth.rs crypto_auth_hmacsha256.rs crypto_auth_hmacsha512.rs crypto_auth_hmacsha512256.rs crypto_box.rs crypto_box_curve25519xsalsa20poly1305.rs crypto_core_hsalsa20.rs crypto_core_salsa20.rs crypto_core_salsa2012.rs crypto_core_salsa208.rs crypto_generichash.rs crypto_generichash_blake2b.rs crypto_hash.rs crypto_hash_sha256.rs crypto_hash_sha512.rs crypto_onetimeauth.rs crypto_onetimeauth_poly1305.rs crypto_pwhash_scryptsalsa208sha256.rs crypto_scalarmult.rs crypto_scalarmult_curve25519.rs crypto_secretbox.rs crypto_secretbox_xsalsa20poly1305.rs crypto_shorthash_siphash24.rs crypto_sign_ed25519.rs crypto_stream.rs crypto_stream_chacha20.rs crypto_stream_salsa20.rs crypto_stream_salsa2012.rs crypto_stream_salsa208.rs crypto_stream_xsalsa20.rs crypto_verify_16.rs crypto_verify_32.rs crypto_verify_64.rs randombytes.rs utils.rs version.rs src crypto aead aead_macros.rs chacha20poly1305.rs chacha20poly1305_ietf.rs mod.rs auth auth_macros.rs hmacsha256.rs hmacsha512.rs hmacsha512256.rs mod.rs box_ curve25519xsalsa20poly1305.rs mod.rs hash hash_macros.rs mod.rs sha256.rs sha512.rs onetimeauth mod.rs poly1305.rs pwhash mod.rs scryptsalsa208sha256.rs scalarmult curve25519.rs mod.rs sealedbox curve25519blake2bxsalsa20poly1305.rs mod.rs secretbox mod.rs xsalsa20poly1305.rs shorthash mod.rs siphash24.rs sign ed25519.rs mod.rs stream chacha20.rs mod.rs salsa20.rs salsa2012.rs salsa208.rs stream_macros.rs xsalsa20.rs verify.rs lib.rs newtype_macros.rs randombytes.rs test_utils.rs utils.rs version.rs

sodiumoxide =========== [](https://travis-ci.org/exonum/exonum_sodiumoxide) [](https://ci.appveyor.com/project/DarkEld3r/exonum-sodiumoxide) > [NaCl](http://nacl.cr.yp.to) (pronounced "salt") is a new easy-to-use high-speed software library for network communication, encryption, decryption, signatures, etc. NaCl's goal is to provide all of the core operations needed to build higher-level cryptographic tools. > Of course, other libraries already exist for these core operations. NaCl advances the state of the art by improving security, by improving usability, and by improving speed. > [Sodium](https://github.com/jedisct1/libsodium) is a portable, cross-compilable, installable, packageable fork of NaCl (based on the latest released upstream version nacl-20110221), with a compatible API. This package aims to provide a type-safe and efficient Rust binding that's just as easy to use. Dependencies ------------ [Sodium](https://github.com/jedisct1/libsodium) Building -------- cargo build Testing ------- cargo test Documentation ------------- cargo doc Documentation will be generated in target/doc/... Most documentation is taken from NaCl, with minor modification where the API differs between the C and Rust versions. Documentation for the latest build can be found at [gh-pages](https://dnaq.github.io/sodiumoxide). Optional features ----------------- Several [optional features](http://doc.crates.io/manifest.html#usage-in-end-products) are available: * `std` (default: **enabled**). When this feature is disabled, sodiumoxide builds using `#![no_std]`. Some functionality may be lost. Requires a nightly build of Rust. * `serde` (default: **enabled**). Allows serialization and deserialization of keys, authentication tags, etc. using the [serde library](https://crates.io/crates/serde). * `benchmarks` (default: **disabled**). Compile benchmark tests. Requires a nightly build of Rust. Examples -------- ```rust extern crate exonum_sodiumoxide; exonum_sodiumoxide::init(); ``` Join in ======= File bugs in the issue tracker Master git repository git clone https://github.com/exonum/exonum_sodiumoxide.git License ------- Licensed under either of * Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0) * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT) at your option. ### Contribution Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

near-everything_viewer

.github workflows quality.yml release-mainnet.yml release-testnet.yml README.md apps every.near bos.config.json data.json bos.workspace.json index.html package.json src app.css index.css tree.json vite.config.js

# everything.dev <img src="./assets/under-construction-bar-roll.gif" alt="under construction" > ## Getting started 1. Install packages ```cmd yarn install ``` 2. Start dev environment ```cmd yarn run dev ```

IllyaPashchenko_VotingNear

.github workflows static.yml .gitpod.yml .idea inspectionProfiles Project_Default.xml modules.xml vcs.xml README.md contract README.md build.sh build builder.c code.h methods.h votes.js deploy.sh neardev dev-account.env package-lock.json package.json src votes.ts tsconfig.json frontend App.js Components Votes.js assets global.css logo-black.svg logo-white.svg build.sh dist index.6118c72d.css index.ab0485ab.css index.html index.html index.js near-wallet.js package-lock.json package.json start.sh ui-components.js integration-tests package-lock.json package.json src main.ava.ts neardev dev-account.env package-lock.json package.json

# Block Vote JS Edition Welcome to BlockVote! The application where a user can propose a prompt to vote on, then vote for one of two candidates! This app is meant to demonstrate how to create a full dApp starting from `create-near-app`, and also demonstrate how to implement collections and initiate a JS smart contract using the near-sdk-js! This app was initialized with [create-near-app] # Quick Start If you haven't installed dependencies during setup: npm install Build and deploy your contract to TestNet with a temporary dev account: npm run deploy Test your contract: npm run start # Exploring The Code 1. The smart-contract code lives in the `/contract` folder. There you will find the functionality implemented to store votes, store user names per prompt and store the prompt names to vote on 2. The frontend code lives in the `/frontend` folder. `/frontend/index.html` is a great place to start exploring. Note that it loads in `/frontend/index.js`, this is your entrypoint to learn how the frontend connects to the NEAR blockchain. # Deploy Every smart contract in NEAR has its [own associated account][near accounts]. When you run `npm run deploy`, your smart contract gets deployed to the live NEAR TestNet with a temporary dev account. When you're ready to make it permanent, here's how: ## Step 0: Install near-cli (optional) [near-cli] is a command line interface (CLI) for interacting with the NEAR blockchain. It was installed to the local `node_modules` folder when you ran `npm install`, but for best ergonomics you may want to install it globally: npm install --global near-cli Or, if you'd rather use the locally-installed version, you can prefix all `near` commands with `npx` Ensure that it's installed with `near --version` (or `npx near --version`) ## Step 1: Create an account for the contract Each account on NEAR can have at most one contract deployed to it. If you've already created an account such as `your-name.testnet`, you can deploy your contract to `near-blank-project.your-name.testnet`. Assuming you've already created an account on [NEAR Wallet], here's how to create `near-blank-project.your-name.testnet`: 1. Authorize NEAR CLI, following the commands it gives you: near login 2. Create a subaccount (replace `YOUR-NAME` below with your actual account name): near create-account near-blank-project.YOUR-NAME.testnet --masterAccount YOUR-NAME.testnet ## Step 2: deploy the contract Use the CLI to deploy the contract to TestNet with your account ID. Replace `PATH_TO_WASM_FILE` with the `wasm` that was generated in `contract` build directory. near deploy --accountId near-blank-project.YOUR-NAME.testnet --wasmFile PATH_TO_WASM_FILE ## Step 3: set contract name in your frontend code Modify the line in `src/config.js` that sets the account name of the contract. Set it to the account id you used above. const CONTRACT_NAME = process.env.CONTRACT_NAME || 'near-blank-project.YOUR-NAME.testnet' # Troubleshooting On Windows, if you're seeing an error containing `EPERM` it may be related to spaces in your path. Please see [this issue](https://github.com/zkat/npx/issues/209) for more details. [create-near-app]: https://github.com/near/create-near-app [node.js]: https://nodejs.org/en/download/package-manager/ [jest]: https://jestjs.io/ [near accounts]: https://docs.near.org/concepts/basics/account [near wallet]: https://wallet.testnet.near.org/ [near-cli]: https://github.com/near/near-cli [gh-pages]: https://github.com/tschaub/gh-pages # BlockVote-JS-Edition-Tutorial # Hello NEAR Contract The smart contract exposes two methods to enable storing and retrieving a greeting in the NEAR network. ```ts @NearBindgen({}) class HelloNear { greeting: string = "Hello"; @view // This method is read-only and can be called for free get_greeting(): string { return this.greeting; } @call // This method changes the state, for which it cost gas set_greeting({ greeting }: { greeting: string }): void { // Record a log permanently to the blockchain! near.log(`Saving greeting ${greeting}`); this.greeting = greeting; } } ``` <br /> # Quickstart 1. Make sure you have installed [node.js](https://nodejs.org/en/download/package-manager/) >= 16. 2. Install the [`NEAR CLI`](https://github.com/near/near-cli#setup) <br /> ## 1. Build and Deploy the Contract You can automatically compile and deploy the contract in the NEAR testnet by running: ```bash npm run deploy ``` Once finished, check the `neardev/dev-account` file to find the address in which the contract was deployed: ```bash cat ./neardev/dev-account # e.g. dev-1659899566943-21539992274727 ``` <br /> ## 2. Retrieve the Greeting `get_greeting` is a read-only method (aka `view` method). `View` methods can be called for **free** by anyone, even people **without a NEAR account**! ```bash # Use near-cli to get the greeting near view <dev-account> get_greeting ``` <br /> ## 3. Store a New Greeting `set_greeting` changes the contract's state, for which it is a `call` method. `Call` methods can only be invoked using a NEAR account, since the account needs to pay GAS for the transaction. ```bash # Use near-cli to set a new greeting near call <dev-account> set_greeting '{"greeting":"howdy"}' --accountId <dev-account> ``` **Tip:** If you would like to call `set_greeting` using your own account, first login into NEAR using: ```bash # Use near-cli to login your NEAR account near login ``` and then use the logged account to sign the transaction: `--accountId <your-account>`.

near_the-guard-bot

.circleci config.yml .eslintrc.json .github ISSUE_TEMPLATE BOUNTY.yml .vscode extensions.json settings.json README.md | actions ban.js batchBan.js warn.js bot context.js index.js example.config.js handlers commands addCommand.js admin.js ban.js commands.js del.js fban.js groups.js help.js hideGroup.js index.js leave.ts link.js nowarns.js permit.ts removeCommand.js report.js routingFn.js showGroup.js staff.js start.js unadmin.js unban.js unwarn.js user.js warn.js middlewares addedToGroup.ts antibot.js checkLinks.ts commandButtons.js index.js kickBanned.js kickedFromGroup.js leaveUnmanaged.js logPresence.js monkeyPatch.js removeChannelForwards.js removeCommands.js reportHandled.ts syncStatus.js updateGroupTitle.js updateUserData.js regex groupLinker.js index.js runCustomCmd.js unmatched.js index.js package-lock.json package.json plugins README.md index.js stores command.js group.js user.js tsconfig.json typings config.d.ts context.d.ts utils cmd index.js parse.ts stringify.js substom.ts config.js eq.js html.ts log.js normalize.js promise.ts spamwatch.js tg.js

<p align="center"> <img src="assets/logo.png" width="180" height="180"> <h1 align="center">The Guard Bot</h1> </p> The Guard is a Telegram bot made to help admins manage their groups. Initially created to moderate [The Devs Network](https://thedevs.network). **NOTE: The Guard is in beta phase;** **it has known issues, but it's successfully being used in production** If you need help with using the Bot or setting it up, join our [Support Chat](https://t.me/theguardsupport). ## Setup You need [Node.js](https://nodejs.org/) (>= 12) to run this bot. 1. Create a bot via [@BotFather](https://t.me/BotFather) and grab a **token**. 2. Clone this repository or [download zip](https://github.com/TheDevs-Network/the-guard-bot/archive/master.zip). 3. Install dependencies via `npm install`. 4. Copy `example.config.js` to `config.js` and edit it. 5. Start the bot via `npm start`. ## Setup with Docker You need to have [docker](https://docs.docker.com/engine/installation/linux/docker-ce/ubuntu/#install-from-a-package) installed on your machine. 1. Create a bot via [@BotFather](https://t.me/BotFather) and grab a **token**. 2. Clone this repository or [download zip](https://github.com/TheDevs-Network/the-guard-bot/archive/master.zip). 3. Copy `example.config.js` to `config.js` and edit it. 4. Run `docker build -t the_guard_bot .` to build image. 5. Run `docker run -v $(pwd)/data:/app/data --rm -itd the_guard_bot` to start the bot. Now you can add the bot as **administrator** to your groups. ## Features * Synchronized database across multiple groups. * Adding admins to the bot. * Auto-remove and warn channels and groups ads. * Kick bots added by users. * Warn and ban users to control the group. * Commands work with replying, mentioning and ID. * Removes commands and temporary bot messages. * Ability to create custom commands. * Supports plugins. Overall, keeps the groups clean and healthy to use. ## Commands Command | Role | Available at | Description ----------------------- | ---------- | ------------ | ----------------- `/admin` | _Master_ | _Everywhere_ | Makes the user admin in the bot and groups. `/unadmin` | _Master_ | _Everywhere_ | Demotes the user from admin list. `/leave <name\|id>` | _Master_ | _Everywhere_ | Make the bot to leave the group cleanly. `/hidegroup` | _Master_ | _Groups_ | Revoke invite link and hide the group from `/groups` list. `/showgroup` | _Master_ | _Groups_ | Make the group accessible via `/groups` list. `/del [reason]` | _Admin_ | _Everywhere_ | Deletes replied-to message. `/warn <reason>` | _Admin_ | _Groups_ | Warns the user. `/unwarn` | _Admin_ | _Everywhere_ | Removes the last warn from the user. `/nowarns` | _Admin_ | _Everywhere_ | Clears warns for the user. `/permit` | _Admin_ | _Everywhere_ | Permits the user to advertise once, within 24 hours. `/ban <reason>` | _Admin_ | _Groups_ | Bans the user from groups. `/unban` | _Admin_ | _Everywhere_ | Removes the user from ban list. `/user` | _Admin_ | _Everywhere_ | Shows the status of the user. `/addcommand <name>` | _Admin_ | _In-Bot_ | Create a custom command. `/removecommand <name>` | _Admin_ | _In-Bot_ | Remove a custom command. `/staff` | _Everyone_ | _Everywhere_ | Shows a list of admins. `/link` | _Everyone_ | _Everywhere_ | Shows the current group's link. `/groups` | _Everyone_ | _Everywhere_ | Shows a list of groups which the bot is admin in. `/report` | _Everyone_ | _Everywhere_ | Reports the replied-to message to admins. `/commands` | _Everyone_ | _In-Bot_ | Shows a list of available commands. `/help` \| `/start` | _Everyone_ | _In-Bot_ | How to use the bot. All commands and actions are synchronized across all of the groups managed by the owner and they work with **replying**, **mentioning** or **ID** of a user. If used by reply, `/ban` and `/warn` would remove the replied-to message. The bot is still in beta phase so feel free to [open issues](https://github.com/thedevs-network/the-guard-bot/issues/new) and ask for features. [**Roadmap**](https://github.com/TheDevs-Network/the-guard-bot/projects/1) --- > Important Note: Under the AGPL-3.0 license, if you're running your own instance, you should add a link to the source [(this repository)](https://github.com/TheDevs-Network/the-guard-bot) in your bot's bio. If you're modifying this source and making your own bot, you should link to the source of your own version of the bot according to the AGPL-3.0 license. Check [LICENSE](LICENSE) for more info. `The Guard` icon is from [Entypo+](http://entypo.com/) by Daniel Bruce. # Plugins # Plugins let you extend the bot with new functionality without touching source code of the bot. ## Using plugins ## To use a plugin, put it in this directory and add it's name to `plugins` array in `config.js`. If `plugins` is undefined, no plugins are loaded. However, this behavior may change, don't rely on it. If you want no plugins to be loaded, explicitly set it to empty array. ## Creating a plugin ## Plugin is basically "requirable" (JS file, or directory with `index.js`) which exports a valid Telegraf handler (usually function or `Composer` instance). Plugins are similar to [micro-bot] bots. ## Known plugins ## - https://gist.github.com/wojpawlik/ef6273e4155bc5db89e4db8b3bdc14a8 [micro-bot]: https://github.com/telegraf/micro-bot

orkun51_Web3-Fundamentals-www.patika.dev

README.md as-pect.config.js asconfig.json package.json scripts 1.dev-deploy.sh 2.use-contract.sh 3.cleanup.sh README.md src as_types.d.ts simple __tests__ as-pect.d.ts index.unit.spec.ts asconfig.json assembly index.ts singleton __tests__ as-pect.d.ts index.unit.spec.ts asconfig.json assembly index.ts tsconfig.json utils.ts

## Setting up your terminal The scripts in this folder are designed to help you demonstrate the behavior of the contract(s) in this project. It uses the following setup: ```sh # set your terminal up to have 2 windows, A and B like this: ┌─────────────────────────────────┬─────────────────────────────────┐ │ │ │ │ │ │ │ A │ B │ │ │ │ │ │ │ └─────────────────────────────────┴─────────────────────────────────┘ ``` ### Terminal **A** *This window is used to compile, deploy and control the contract* - Environment ```sh export CONTRACT= # depends on deployment export OWNER= # any account you control # for example # export CONTRACT=dev-1615190770786-2702449 # export OWNER=sherif.testnet ``` - Commands _helper scripts_ ```sh 1.dev-deploy.sh # helper: build and deploy contracts 2.use-contract.sh # helper: call methods on ContractPromise 3.cleanup.sh # helper: delete build and deploy artifacts ``` ### Terminal **B** *This window is used to render the contract account storage* - Environment ```sh export CONTRACT= # depends on deployment # for example # export CONTRACT=dev-1615190770786-2702449 ``` - Commands ```sh # monitor contract storage using near-account-utils # https://github.com/near-examples/near-account-utils watch -d -n 1 yarn storage $CONTRACT ``` --- ## OS Support ### Linux - The `watch` command is supported natively on Linux - To learn more about any of these shell commands take a look at [explainshell.com](https://explainshell.com) ### MacOS - Consider `brew info visionmedia-watch` (or `brew install watch`) ### Windows - Consider this article: [What is the Windows analog of the Linux watch command?](https://superuser.com/questions/191063/what-is-the-windows-analog-of-the-linuo-watch-command#191068) # `near-sdk-as` Starter Kit This is a good project to use as a starting point for your AssemblyScript project. ## Samples This repository includes a complete project structure for AssemblyScript contracts targeting the NEAR platform. The example here is very basic. It's a simple contract demonstrating the following concepts: - a single contract - the difference between `view` vs. `change` methods - basic contract storage There are 2 AssemblyScript contracts in this project, each in their own folder: - **simple** in the `src/simple` folder - **singleton** in the `src/singleton` folder ### Simple We say that an AssemblyScript contract is written in the "simple style" when the `index.ts` file (the contract entry point) includes a series of exported functions. In this case, all exported functions become public contract methods. ```ts // return the string 'hello world' export function helloWorld(): string {} // read the given key from account (contract) storage export function read(key: string): string {} // write the given value at the given key to account (contract) storage export function write(key: string, value: string): string {} // private helper method used by read() and write() above private storageReport(): string {} ``` ### Singleton We say that an AssemblyScript contract is written in the "singleton style" when the `index.ts` file (the contract entry point) has a single exported class (the name of the class doesn't matter) that is decorated with `@nearBindgen`. In this case, all methods on the class become public contract methods unless marked `private`. Also, all instance variables are stored as a serialized instance of the class under a special storage key named `STATE`. AssemblyScript uses JSON for storage serialization (as opposed to Rust contracts which use a custom binary serialization format called borsh). ```ts @nearBindgen export class Contract { // return the string 'hello world' helloWorld(): string {} // read the given key from account (contract) storage read(key: string): string {} // write the given value at the given key to account (contract) storage @mutateState() write(key: string, value: string): string {} // private helper method used by read() and write() above private storageReport(): string {} } ``` ## Usage ### Getting started (see below for video recordings of each of the following steps) INSTALL `NEAR CLI` first like this: `npm i -g near-cli` 1. clone this repo to a local folder 2. run `yarn` 3. run `./scripts/1.dev-deploy.sh` 3. run `./scripts/2.use-contract.sh` 4. run `./scripts/2.use-contract.sh` (yes, run it to see changes) 5. run `./scripts/3.cleanup.sh` ### Videos **`1.dev-deploy.sh`** This video shows the build and deployment of the contract. [](https://asciinema.org/a/409575) **`2.use-contract.sh`** This video shows contract methods being called. You should run the script twice to see the effect it has on contract state. [](https://asciinema.org/a/409577) **`3.cleanup.sh`** This video shows the cleanup script running. Make sure you add the `BENEFICIARY` environment variable. The script will remind you if you forget. ```sh export BENEFICIARY=<your-account-here> # this account receives contract account balance ``` [](https://asciinema.org/a/409580) ### Other documentation - See `./scripts/README.md` for documentation about the scripts - Watch this video where Willem Wyndham walks us through refactoring a simple example of a NEAR smart contract written in AssemblyScript https://youtu.be/QP7aveSqRPo ``` There are 2 "styles" of implementing AssemblyScript NEAR contracts: - the contract interface can either be a collection of exported functions - or the contract interface can be the methods of a an exported class We call the second style "Singleton" because there is only one instance of the class which is serialized to the blockchain storage. Rust contracts written for NEAR do this by default with the contract struct. 0:00 noise (to cut) 0:10 Welcome 0:59 Create project starting with "npm init" 2:20 Customize the project for AssemblyScript development 9:25 Import the Counter example and get unit tests passing 18:30 Adapt the Counter example to a Singleton style contract 21:49 Refactoring unit tests to access the new methods 24:45 Review and summary ``` ## The file system ```sh ├── README.md # this file ├── as-pect.config.js # configuration for as-pect (AssemblyScript unit testing) ├── asconfig.json # configuration for AssemblyScript compiler (supports multiple contracts) ├── package.json # NodeJS project manifest ├── scripts │   ├── 1.dev-deploy.sh # helper: build and deploy contracts │   ├── 2.use-contract.sh # helper: call methods on ContractPromise │   ├── 3.cleanup.sh # helper: delete build and deploy artifacts │   └── README.md # documentation for helper scripts ├── src │   ├── as_types.d.ts # AssemblyScript headers for type hints │   ├── simple # Contract 1: "Simple example" │   │   ├── __tests__ │   │   │   ├── as-pect.d.ts # as-pect unit testing headers for type hints │   │   │   └── index.unit.spec.ts # unit tests for contract 1 │   │   ├── asconfig.json # configuration for AssemblyScript compiler (one per contract) │   │   └── assembly │   │   └── index.ts # contract code for contract 1 │   ├── singleton # Contract 2: "Singleton-style example" │   │   ├── __tests__ │   │   │   ├── as-pect.d.ts # as-pect unit testing headers for type hints │   │   │   └── index.unit.spec.ts # unit tests for contract 2 │   │   ├── asconfig.json # configuration for AssemblyScript compiler (one per contract) │   │   └── assembly │   │   └── index.ts # contract code for contract 2 │   ├── tsconfig.json # Typescript configuration │   └── utils.ts # common contract utility functions └── yarn.lock # project manifest version lock ``` You may clone this repo to get started OR create everything from scratch. Please note that, in order to create the AssemblyScript and tests folder structure, you may use the command `asp --init` which will create the following folders and files: ``` ./assembly/ ./assembly/tests/ ./assembly/tests/example.spec.ts ./assembly/tests/as-pect.d.ts ```

NEARFoundation_nearcon-website

README.md api Cargo.toml build.rs migrations 20230621191330_initial.down.sql 20230621191330_initial.up.sql 20230711105221_users.down.sql 20230711105221_users.up.sql 20230807104043_auth.down.sql 20230807104043_auth.up.sql 20230818075724_user_updates.down.sql 20230818075724_user_updates.up.sql 20230818080118_private_key.down.sql 20230818080118_private_key.up.sql rust-toolchain.toml src auth.rs lib.rs main.rs dev_widget_deploy.sh package-lock.json package.json types.d.ts

leonardokhorliey_near-expense-app

README.md package.json public index.html manifest.json robots.txt src App.js components Chart Chart.css Chart.js ChartBar.css ChartBar.js Expenses ExpenseDate.css ExpenseDate.js ExpenseItem.css ExpenseItem.js Expenses.css Expenses.js ExpensesChart.js ExpensesFilter.css ExpensesFilter.js ExpensesList.css ExpensesList.js NewExpense ExpenseForm.css ExpenseForm.js NewExpense.css NewExpense.js UI Card.css Card.js home.js index.css index.js utils constants.js nearconfig.js

# Title A simple budget/expense Management App built on the NEAR BlockChain Protocol

mikedotexe_near-get-block

README.md index.js package-lock.json package.json

Hi Summa, NEAR thinks y'all are awesome. `yarn` then `node index.js`

michaelwaves_web3-hackathon

.gitpod.yml README.md contract README.md build.sh build builder.c code.h hello_near.js methods.h patent_contract.js deploy.sh neardev dev-account.env package-lock.json package.json src contract.ts patentContract.ts patentInterface.ts patentSchema.ts tsconfig.json frontend assets global.css logo-black.svg logo-white.svg dist fetch.5aa4d3e3.js index.9e4c6fd2.css index.bc0daea6.css index.html logo-black.4514ed42.svg logo-white.a7716062.svg index.css index.html near-wallet.js package-lock.json package.json postcss.config.js start.sh tailwind.config.js ui-components.js integration-tests package-lock.json package.json src main.ava.ts package-lock.json package.json rust-toolchain.toml

# Hello NEAR Contract The smart contract exposes two methods to enable storing and retrieving a greeting in the NEAR network. ```ts @NearBindgen({}) class HelloNear { greeting: string = "Hello"; @view // This method is read-only and can be called for free get_greeting(): string { return this.greeting; } @call // This method changes the state, for which it cost gas set_greeting({ greeting }: { greeting: string }): void { // Record a log permanently to the blockchain! near.log(`Saving greeting ${greeting}`); this.greeting = greeting; } } ``` <br /> # Quickstart 1. Make sure you have installed [node.js](https://nodejs.org/en/download/package-manager/) >= 16. 2. Install the [`NEAR CLI`](https://github.com/near/near-cli#setup) <br /> ## 1. Build and Deploy the Contract You can automatically compile and deploy the contract in the NEAR testnet by running: ```bash npm run deploy ``` Once finished, check the `neardev/dev-account` file to find the address in which the contract was deployed: ```bash cat ./neardev/dev-account # e.g. dev-1659899566943-21539992274727 ``` <br /> ## 2. Retrieve the Greeting `get_greeting` is a read-only method (aka `view` method). `View` methods can be called for **free** by anyone, even people **without a NEAR account**! ```bash # Use near-cli to get the greeting near view <dev-account> get_greeting ``` <br /> ## 3. Store a New Greeting `set_greeting` changes the contract's state, for which it is a `call` method. `Call` methods can only be invoked using a NEAR account, since the account needs to pay GAS for the transaction. ```bash # Use near-cli to set a new greeting near call <dev-account> set_greeting '{"greeting":"howdy"}' --accountId <dev-account> ``` **Tip:** If you would like to call `set_greeting` using your own account, first login into NEAR using: ```bash # Use near-cli to login your NEAR account near login ``` and then use the logged account to sign the transaction: `--accountId <your-account>`. # NearIP - Web3 Build Hackathon! ## Inspiration Before demoing our product, I want to provide quick context on the inspiration. I recently had a conversation with a close friend who wanted to share their patents with the world. However, their excitement quickly turned into frustration as they discovered the exorbitant costs associated with navigating the convoluted legal landscape and finding potential buyers. Meanwhile, I found online that companies had trouble scouting relevant patents, with transactions costing thousands due to the lawyer fees involved. This encounter ignited a fire within me—a burning determination to create a solution that would empower innovators like my friend and revolutionize the way intellectual property is transacted. That's when NearIP was born, an Intellectual Property NFT Marketplace built on Near Protocol's Blockchain Operating System. Here’s the data. Did you know that intellectual property (IP) and patents play a significant role in both the Canadian and US economies? In the United States, IP-intensive industries account for an astounding 38.2% of the nation's GDP, contributing over USD 6.6 trillion to the economy [source: U.S. Department of Commerce]. However, the current IP ecosystem is burdened by inefficiencies and limitations. Traditional methods of IP protection, licensing, and transactions are slow, costly, and prone to disputes. This hampers innovation and prevents creators from fully leveraging the value of their intellectual assets. ## What it does That's where NearIP comes in. NearIP is an Intellectual Property NFT Marketplace built on Near Protocol's Blockchain Operating System, offering a transformative solution for the IP industry. By harnessing the power of blockchain technology, NearIP brings a multitude of benefits to all stakeholders involved. For creators, NearIP provides a secure and transparent platform to tokenize their intellectual property as Non-Fungible Tokens (NFTs). This enables them to establish verifiable ownership, protect their IP rights, and unlock new avenues for monetization. Creators can seamlessly license their IP assets to interested parties, ensuring fair compensation and streamlined transactions. For investors, NearIP opens up a new world of investment opportunities in the IP space. Through the marketplace, they can explore a diverse range of IP assets and participate in their growth potential. The transparent nature of blockchain ensures trust and reduces the risk of fraud, providing a secure environment for IP investments. NearIP also benefits businesses seeking to access and license IP assets. The marketplace offers a global repository of NFT-based IP assets, facilitating easy discovery and licensing negotiations. By leveraging blockchain's immutability and smart contract capabilities, NearIP enables streamlined, automated licensing agreements, reducing legal complexities and ensuring compliance. ## How we built it Near - for user authentication through Near's Wallet, so we can track who owns what patents and charge the relevant fees through Near Firebase - for storage of patent information (next step is moving it onto Near, couldn't get that working in time) Voiceflow - AI driven chatbot to help with any user inquiries, both general or specific (e.g. what elevator patents exist) ## Challenges we ran into During the development of NearIP, we faced challenges in ensuring seamless integration with Near Wallet for user authentication, implementing a reliable storage solution with Firebase, and fine-tuning the Voiceflow AI chatbot to provide accurate and helpful responses to user inquiries regarding elevator patents or general queries. ## Accomplishments that we're proud of Working with NEAR for the first time for Michael and second time for William! Learning more about NEAR and building a proof of concept in time this weekend 😄 ## What we learned Throughout the development of NearIP, we learned about the significant challenges faced by creators and businesses in the current IP ecosystem, including high costs, inefficiencies, and limited accessibility. We also gained valuable insights into the potential of blockchain technology to revolutionize IP transactions by providing secure ownership, streamlined licensing, and increased transparency. ## Business Model In terms of business model, we can charge a flat fee of 1% on every patent transaction so instead of paying thousands for a lawyer to look through a bunch of paperwork, you can get a seamless and secure experience through NearIP for $100 if their patent is being sold for $10k. Will $38 Billion in patents listed out of the total $3 trillion worth of US patents, that’s a total addressable market of $380 million. Capturing just 1% of that would mean annual revenues of $3.8 million. ## What's next for NearIP We hope to take NearIP from a proof of concept to a fully working application on Near! Right now we are using Firebase to store the information due to not being able to get the Near smart contracts working in time, but we already have the logic in place to secure these patents on chain. To conclude, NearIP revolutionizes the trillion dollar IP industry by increasing efficiency, transparency, and accessibility. By embracing blockchain technology, we empower creators, investors, and businesses to fully leverage the immense value of intellectual property. Join us in shaping the future of IP transactions with NearIP!

freewind-demos_typescript-react-near-api-js-login-run-contract-demo

README.md package.json tsconfig.json webpack.config.ts

TypeScript React "near-api-js" Login Run Contract Demo ================================= 直接使用`near-api-js`而非`wallet-selector`进行登录并执行 function call（包括change function) 多次connectToNear以及创建WalletConnection对象，信息都是从`localStorage`中取的，可以当作同一个对象使用，不会产生格外连接。 每次SignIn只能指定一个contract。如果登录到新的contract，之前的登录就无效了。如果操作其change method，每次都需要 approve ``` npm install ``` ## Deploy contract 已经操作过，不需要再操作 ``` near login npm run deploy-contract npm run deploy-contract ``` ## Run frontend ``` npm start ```

esaminu_donation-boilerplate-template-js-sfd

.github scripts runfe.sh workflows deploy-to-console.yml readme.yml tests.yml .gitpod.yml README.md contract README.md build.sh deploy.sh package-lock.json package.json src contract.ts model.ts utils.ts tsconfig.json integration-tests package-lock.json package.json src main.ava.ts package-lock.json package.json

# Donation Contract The smart contract exposes methods to handle donating $NEAR to a `beneficiary`. ```ts @call donate() { // Get who is calling the method and how much $NEAR they attached let donor = near.predecessorAccountId(); let donationAmount: bigint = near.attachedDeposit() as bigint; let donatedSoFar = this.donations.get(donor) === null? BigInt(0) : BigInt(this.donations.get(donor) as string) let toTransfer = donationAmount; // This is the user's first donation, lets register it, which increases storage if(donatedSoFar == BigInt(0)) { assert(donationAmount > STORAGE_COST, `Attach at least ${STORAGE_COST} yoctoNEAR`); // Subtract the storage cost to the amount to transfer toTransfer -= STORAGE_COST } // Persist in storage the amount donated so far donatedSoFar += donationAmount this.donations.set(donor, donatedSoFar.toString()) // Send the money to the beneficiary const promise = near.promiseBatchCreate(this.beneficiary) near.promiseBatchActionTransfer(promise, toTransfer) // Return the total amount donated so far return donatedSoFar.toString() } ``` <br /> # Quickstart 1. Make sure you have installed [node.js](https://nodejs.org/en/download/package-manager/) >= 16. 2. Install the [`NEAR CLI`](https://github.com/near/near-cli#setup) <br /> ## 1. Build and Deploy the Contract You can automatically compile and deploy the contract in the NEAR testnet by running: ```bash npm run deploy ``` Once finished, check the `neardev/dev-account` file to find the address in which the contract was deployed: ```bash cat ./neardev/dev-account # e.g. dev-1659899566943-21539992274727 ``` The contract will be automatically initialized with a default `beneficiary`. To initialize the contract yourself do: ```bash # Use near-cli to initialize contract (optional) near call <dev-account> init '{"beneficiary":"<account>"}' --accountId <dev-account> ``` <br /> ## 2. Get Beneficiary `beneficiary` is a read-only method (`view` method) that returns the beneficiary of the donations. `View` methods can be called for **free** by anyone, even people **without a NEAR account**! ```bash near view <dev-account> beneficiary ``` <br /> ## 3. Get Number of Donations `donate` forwards any attached money to the `beneficiary` while keeping track of it. `donate` is a payable method for which can only be invoked using a NEAR account. The account needs to attach money and pay GAS for the transaction. ```bash # Use near-cli to donate 1 NEAR near call <dev-account> donate --amount 1 --accountId <account> ``` **Tip:** If you would like to `donate` using your own account, first login into NEAR using: ```bash # Use near-cli to login your NEAR account near login ``` and then use the logged account to sign the transaction: `--accountId <your-account>`. # Donation 💸 [](https://docs.near.org/tutorials/welcome) [](https://gitpod.io/#/https://github.com/near-examples/donation-js) [](https://docs.near.org/develop/contracts/anatomy) [](https://docs.near.org/develop/integrate/frontend) [](https://actions-badge.atrox.dev/near-examples/donation-js/goto) Our Donation example enables to forward money to an account while keeping track of it. It is one of the simplest examples on making a contract receive and send money.  # What This Example Shows 1. How to receive and transfer $NEAR on a contract. 2. How to divide a project into multiple modules. 3. How to handle the storage costs. 4. How to handle transaction results. 5. How to use a `Map`. <br /> # Quickstart Clone this repository locally or [**open it in gitpod**](https://gitpod.io/#/github.com/near-examples/donation-js). Then follow these steps: ### 1. Install Dependencies ```bash npm install ``` ### 2. Test the Contract Deploy your contract in a sandbox and simulate interactions from users. ```bash npm test ``` ### 3. Deploy the Contract Build the contract and deploy it in a testnet account ```bash npm run deploy ``` --- # Learn More 1. Learn more about the contract through its [README](./contract/README.md). 2. Check [**our documentation**](https://docs.near.org/develop/welcome).

FantasyNFTLeague_near-first-deploy

README.md as-pect.config.js asconfig.json package.json scripts 1.dev-deploy.sh 2.use-contract.sh 3.cleanup.sh README.md src as_types.d.ts simple __tests__ as-pect.d.ts index.unit.spec.ts asconfig.json assembly index.ts singleton __tests__ as-pect.d.ts index.unit.spec.ts asconfig.json assembly index.ts tsconfig.json utils.ts

# `near-sdk-as` Starter Kit This is a good project to use as a starting point for your AssemblyScript project. ## Samples This repository includes a complete project structure for AssemblyScript contracts targeting the NEAR platform. The example here is very basic. It's a simple contract demonstrating the following concepts: - a single contract - the difference between `view` vs. `change` methods - basic contract storage There are 2 AssemblyScript contracts in this project, each in their own folder: - **simple** in the `src/simple` folder - **singleton** in the `src/singleton` folder ### Simple We say that an AssemblyScript contract is written in the "simple style" when the `index.ts` file (the contract entry point) includes a series of exported functions. In this case, all exported functions become public contract methods. ```ts // return the string 'hello world' export function helloWorld(): string {} // read the given key from account (contract) storage export function read(key: string): string {} // write the given value at the given key to account (contract) storage export function write(key: string, value: string): string {} // private helper method used by read() and write() above private storageReport(): string {} ``` ### Singleton We say that an AssemblyScript contract is written in the "singleton style" when the `index.ts` file (the contract entry point) has a single exported class (the name of the class doesn't matter) that is decorated with `@nearBindgen`. In this case, all methods on the class become public contract methods unless marked `private`. Also, all instance variables are stored as a serialized instance of the class under a special storage key named `STATE`. AssemblyScript uses JSON for storage serialization (as opposed to Rust contracts which use a custom binary serialization format called borsh). ```ts @nearBindgen export class Contract { // return the string 'hello world' helloWorld(): string {} // read the given key from account (contract) storage read(key: string): string {} // write the given value at the given key to account (contract) storage @mutateState() write(key: string, value: string): string {} // private helper method used by read() and write() above private storageReport(): string {} } ``` ## Usage ### Getting started (see below for video recordings of each of the following steps) INSTALL `NEAR CLI` first like this: `npm i -g near-cli` 1. clone this repo to a local folder 2. run `yarn` 3. run `./scripts/1.dev-deploy.sh` 3. run `./scripts/2.use-contract.sh` 4. run `./scripts/2.use-contract.sh` (yes, run it to see changes) 5. run `./scripts/3.cleanup.sh` ### Videos **`1.dev-deploy.sh`** This video shows the build and deployment of the contract. [](https://asciinema.org/a/409575) **`2.use-contract.sh`** This video shows contract methods being called. You should run the script twice to see the effect it has on contract state. [](https://asciinema.org/a/409577) **`3.cleanup.sh`** This video shows the cleanup script running. Make sure you add the `BENEFICIARY` environment variable. The script will remind you if you forget. ```sh export BENEFICIARY=<your-account-here> # this account receives contract account balance ``` [](https://asciinema.org/a/409580) ### Other documentation - See `./scripts/README.md` for documentation about the scripts - Watch this video where Willem Wyndham walks us through refactoring a simple example of a NEAR smart contract written in AssemblyScript https://youtu.be/QP7aveSqRPo ``` There are 2 "styles" of implementing AssemblyScript NEAR contracts: - the contract interface can either be a collection of exported functions - or the contract interface can be the methods of a an exported class We call the second style "Singleton" because there is only one instance of the class which is serialized to the blockchain storage. Rust contracts written for NEAR do this by default with the contract struct. 0:00 noise (to cut) 0:10 Welcome 0:59 Create project starting with "npm init" 2:20 Customize the project for AssemblyScript development 9:25 Import the Counter example and get unit tests passing 18:30 Adapt the Counter example to a Singleton style contract 21:49 Refactoring unit tests to access the new methods 24:45 Review and summary ``` ## The file system ```sh ├── README.md # this file ├── as-pect.config.js # configuration for as-pect (AssemblyScript unit testing) ├── asconfig.json # configuration for AssemblyScript compiler (supports multiple contracts) ├── package.json # NodeJS project manifest ├── scripts │   ├── 1.dev-deploy.sh # helper: build and deploy contracts │   ├── 2.use-contract.sh # helper: call methods on ContractPromise │   ├── 3.cleanup.sh # helper: delete build and deploy artifacts │   └── README.md # documentation for helper scripts ├── src │   ├── as_types.d.ts # AssemblyScript headers for type hints │   ├── simple # Contract 1: "Simple example" │   │   ├── __tests__ │   │   │   ├── as-pect.d.ts # as-pect unit testing headers for type hints │   │   │   └── index.unit.spec.ts # unit tests for contract 1 │   │   ├── asconfig.json # configuration for AssemblyScript compiler (one per contract) │   │   └── assembly │   │   └── index.ts # contract code for contract 1 │   ├── singleton # Contract 2: "Singleton-style example" │   │   ├── __tests__ │   │   │   ├── as-pect.d.ts # as-pect unit testing headers for type hints │   │   │   └── index.unit.spec.ts # unit tests for contract 2 │   │   ├── asconfig.json # configuration for AssemblyScript compiler (one per contract) │   │   └── assembly │   │   └── index.ts # contract code for contract 2 │   ├── tsconfig.json # Typescript configuration │   └── utils.ts # common contract utility functions └── yarn.lock # project manifest version lock ``` You may clone this repo to get started OR create everything from scratch. Please note that, in order to create the AssemblyScript and tests folder structure, you may use the command `asp --init` which will create the following folders and files: ``` ./assembly/ ./assembly/tests/ ./assembly/tests/example.spec.ts ./assembly/tests/as-pect.d.ts ``` ## Setting up your terminal The scripts in this folder are designed to help you demonstrate the behavior of the contract(s) in this project. It uses the following setup: ```sh # set your terminal up to have 2 windows, A and B like this: ┌─────────────────────────────────┬─────────────────────────────────┐ │ │ │ │ │ │ │ A │ B │ │ │ │ │ │ │ └─────────────────────────────────┴─────────────────────────────────┘ ``` ### Terminal **A** *This window is used to compile, deploy and control the contract* - Environment ```sh export CONTRACT= # depends on deployment export OWNER= # any account you control # for example # export CONTRACT=dev-1615190770786-2702449 # export OWNER=sherif.testnet ``` - Commands _helper scripts_ ```sh 1.dev-deploy.sh # helper: build and deploy contracts 2.use-contract.sh # helper: call methods on ContractPromise 3.cleanup.sh # helper: delete build and deploy artifacts ``` ### Terminal **B** *This window is used to render the contract account storage* - Environment ```sh export CONTRACT= # depends on deployment # for example # export CONTRACT=dev-1615190770786-2702449 ``` - Commands ```sh # monitor contract storage using near-account-utils # https://github.com/near-examples/near-account-utils watch -d -n 1 yarn storage $CONTRACT ``` --- ## OS Support ### Linux - The `watch` command is supported natively on Linux - To learn more about any of these shell commands take a look at [explainshell.com](https://explainshell.com) ### MacOS - Consider `brew info visionmedia-watch` (or `brew install watch`) ### Windows - Consider this article: [What is the Windows analog of the Linux watch command?](https://superuser.com/questions/191063/what-is-the-windows-analog-of-the-linuo-watch-command#191068)

lfg-oliveira_crow-token

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lib-opaque-debug.json opaque-debug-ce59ec0a8ef85c91 lib-opaque-debug.json regex-180ae6db84ef7c43 lib-regex.json regex-syntax-64d72df1a7a24eed lib-regex-syntax.json ryu-cee8a9e3ef551249 run-build-script-build-script-build.json ryu-f5f5279d17e4558f lib-ryu.json serde-454350dad00c836f lib-serde.json serde-9c4e68c7bafb97ab run-build-script-build-script-build.json serde_json-89e9633a411c631e lib-serde_json.json serde_json-99a433b6f05242fb run-build-script-build-script-build.json sha2-f58f5f9043003f37 lib-sha2.json sha3-e89a3e3ea208ff02 lib-sha3.json typenum-5bdf061afe46b05e run-build-script-build-script-main.json typenum-5eb09d9567c7402c lib-typenum.json wee_alloc-87427b00e2478ff4 run-build-script-build-script-build.json wee_alloc-adb071298af20a95 lib-wee_alloc.json build num-bigint-cf5799adc943a33e out radix_bases.rs typenum-5bdf061afe46b05e out consts.rs op.rs tests.rs wee_alloc-87427b00e2478ff4 out wee_alloc_static_array_backend_size_bytes.txt | |","span":{"file_name":" home luizfgdo .cargo registry src github.com-1ecc6299db9ec823 base64-0.13.0 src lib.rs","byte_start":1038,"byte_end":1133,"line_start":22,"line_end":22,"column_start":1,"column_end":96}},{"value":" | `encode` | Returns a new `String` | Always |","span":{"file_name":" home luizfgdo .cargo registry src github.com-1ecc6299db9ec823 base64-0.13.0 src lib.rs","byte_start":1134,"byte_end":1229,"line_start":23,"line_end":23,"column_start":1,"column_end":96}},{"value":" | `encode_config` | Returns a new `String` | Always |","span":{"file_name":" home luizfgdo .cargo registry src github.com-1ecc6299db9ec823 base64-0.13.0 src lib.rs","byte_start":1230,"byte_end":1325,"line_start":24,"line_end":24,"column_start":1,"column_end":96}},{"value":" | `encode_config_buf` | Appends to provided `String` | Only if `String` needs to grow |","span":{"file_name":" home luizfgdo .cargo registry src github.com-1ecc6299db9ec823 base64-0.13.0 src lib.rs","byte_start":1326,"byte_end":1421,"line_start":25,"line_end":25,"column_start":1,"column_end":96}},{"value":" | `encode_config_slice` | Writes to provided `&[u8]` | Never |","span":{"file_name":" home luizfgdo .cargo registry src github.com-1ecc6299db9ec823 base64-0.13.0 src lib.rs","byte_start":1422,"byte_end":1517,"line_start":26,"line_end":26,"column_start":1,"column_end":96}},{"value":" ","span":{"file_name":" home luizfgdo .cargo registry src github.com-1ecc6299db9ec823 base64-0.13.0 src lib.rs","byte_start":1518,"byte_end":1521,"line_start":27,"line_end":27,"column_start":1,"column_end":4}},{"value":" All of the encoding functions that take a `Config` will pad as per the config.","span":{"file_name":" home luizfgdo .cargo registry src github.com-1ecc6299db9ec823 base64-0.13.0 src lib.rs","byte_start":1522,"byte_end":1604,"line_start":28,"line_end":28,"column_start":1,"column_end":83}},{"value":" ","span":{"file_name":" home luizfgdo .cargo registry src github.com-1ecc6299db9ec823 base64-0.13.0 src lib.rs","byte_start":1605,"byte_end":1608,"line_start":29,"line_end":29,"column_start":1,"column_end":4}},{"value":" # Decoding","span":{"file_name":" home luizfgdo .cargo registry src github.com-1ecc6299db9ec823 base64-0.13.0 src lib.rs","byte_start":1609,"byte_end":1623,"line_start":30,"line_end":30,"column_start":1,"column_end":15}},{"value":" ","span":{"file_name":" home luizfgdo .cargo registry src github.com-1ecc6299db9ec823 base64-0.13.0 src lib.rs","byte_start":1624,"byte_end":1627,"line_start":31,"line_end":31,"column_start":1,"column_end":4}},{"value":" Just as for encoding, there are different decoding functions available.","span":{"file_name":" home luizfgdo .cargo registry src github.com-1ecc6299db9ec823 base64-0.13.0 src lib.rs","byte_start":1628,"byte_end":1703,"line_start":32,"line_end":32,"column_start":1,"column_end":76}},{"value":" ","span":{"file_name":" home luizfgdo .cargo registry src github.com-1ecc6299db9ec823 base64-0.13.0 src lib.rs","byte_start":1704,"byte_end":1707,"line_start":33,"line_end":33,"column_start":1,"column_end":4}},{"value":" | Function | Output | Allocates |","span":{"file_name":" home luizfgdo .cargo registry src github.com-1ecc6299db9ec823 base64-0.13.0 src lib.rs","byte_start":1708,"byte_end":1804,"line_start":34,"line_end":34,"column_start":1,"column_end":97}},{"value":" | package.json src App.js __mocks__ fileMock.js assets logo-black.svg logo-white.svg config.js global.css index.html index.js jest.init.js main.test.js utils.js wallet login index.html

rust-blockchain ================== This [React] app was initialized with [create-near-app] Quick Start =========== To run this project locally: 1. Prerequisites: Make sure you've installed [Node.js] ≥ 12 2. Install dependencies: `yarn install` 3. Run the local development server: `yarn dev` (see `package.json` for a full list of `scripts` you can run with `yarn`) Now you'll have a local development environment backed by the NEAR TestNet! Go ahead and play with the app and the code. As you make code changes, the app will automatically reload. Exploring The Code ================== 1. The "backend" code lives in the `/contract` folder. See the README there for more info. 2. The frontend code lives in the `/src` folder. `/src/index.html` is a great place to start exploring. Note that it loads in `/src/index.js`, where you can learn how the frontend connects to the NEAR blockchain. 3. Tests: there are different kinds of tests for the frontend and the smart contract. See `contract/README` for info about how it's tested. The frontend code gets tested with [jest]. You can run both of these at once with `yarn run test`. Deploy ====== Every smart contract in NEAR has its [own associated account][NEAR accounts]. When you run `yarn dev`, your smart contract gets deployed to the live NEAR TestNet with a throwaway account. When you're ready to make it permanent, here's how. Step 0: Install near-cli (optional) ------------------------------------- [near-cli] is a command line interface (CLI) for interacting with the NEAR blockchain. It was installed to the local `node_modules` folder when you ran `yarn install`, but for best ergonomics you may want to install it globally: yarn install --global near-cli Or, if you'd rather use the locally-installed version, you can prefix all `near` commands with `npx` Ensure that it's installed with `near --version` (or `npx near --version`) Step 1: Create an account for the contract ------------------------------------------ Each account on NEAR can have at most one contract deployed to it. If you've already created an account such as `your-name.testnet`, you can deploy your contract to `rust-blockchain.your-name.testnet`. Assuming you've already created an account on [NEAR Wallet], here's how to create `rust-blockchain.your-name.testnet`: 1. Authorize NEAR CLI, following the commands it gives you: near login 2. Create a subaccount (replace `YOUR-NAME` below with your actual account name): near create-account rust-blockchain.YOUR-NAME.testnet --masterAccount YOUR-NAME.testnet Step 2: set contract name in code --------------------------------- Modify the line in `src/config.js` that sets the account name of the contract. Set it to the account id you used above. const CONTRACT_NAME = process.env.CONTRACT_NAME || 'rust-blockchain.YOUR-NAME.testnet' Step 3: deploy! --------------- One command: yarn deploy As you can see in `package.json`, this does two things: 1. builds & deploys smart contract to NEAR TestNet 2. builds & deploys frontend code to GitHub using [gh-pages]. This will only work if the project already has a repository set up on GitHub. Feel free to modify the `deploy` script in `package.json` to deploy elsewhere. Troubleshooting =============== On Windows, if you're seeing an error containing `EPERM` it may be related to spaces in your path. Please see [this issue](https://github.com/zkat/npx/issues/209) for more details. [React]: https://reactjs.org/ [create-near-app]: https://github.com/near/create-near-app [Node.js]: https://nodejs.org/en/download/package-manager/ [jest]: https://jestjs.io/ [NEAR accounts]: https://docs.near.org/docs/concepts/account [NEAR Wallet]: https://wallet.testnet.near.org/ [near-cli]: https://github.com/near/near-cli [gh-pages]: https://github.com/tschaub/gh-pages rust-blockchain Smart Contract ================== A [smart contract] written in [Rust] for an app initialized with [create-near-app] Quick Start =========== Before you compile this code, you will need to install Rust with [correct target] Exploring The Code ================== 1. The main smart contract code lives in `src/lib.rs`. You can compile it with the `./compile` script. 2. Tests: You can run smart contract tests with the `./test` script. This runs standard Rust tests using [cargo] with a `--nocapture` flag so that you can see any debug info you print to the console. [smart contract]: https://docs.near.org/docs/develop/contracts/overview [Rust]: https://www.rust-lang.org/ [create-near-app]: https://github.com/near/create-near-app [correct target]: https://github.com/near/near-sdk-rs#pre-requisites [cargo]: https://doc.rust-lang.org/book/ch01-03-hello-cargo.html

near_optimism

.changeset README.md config.json new-mails-explain.md nine-pugs-fix.md old-poets-camp.md rare-moose-itch.md .circleci config.yml .eslintrc.js .github ISSUE_TEMPLATE BOUNTY.yml dependabot.yml labeler.yml mergify.yml workflows close-stale.yml fork-sync.yml labeler.yml publish-canary.yml release.yml tag-service.yml .markdownlint.json .prettierrc.js .vscode extensions.json settings.json CONTRIBUTING.md README.md | SECURITY.md batch-submitter CHANGELOG.md batch_submitter.go bindings ctc canonical_transaction_chain.go scc state_commitment_chain.go cmd batch-submitter main.go config.go config_test.go dial_l2_client.go drivers proposer driver.go sequencer batch.go batch_test.go cached_tx.go driver.go encoding.go encoding_test.go metrics.go testdata valid_append_sequencer_batch_params.json flags flags.go flags_test.go package.json bedrock-devnet README.md devnet __init__.py genesis.py log_setup.py main.py bss-core batch_submitter.go crypto.go crypto_test.go dial common.go l1_client.go drivers clear_pending_tx.go clear_pending_tx_test.go interface.go max_priority_fee_fallback.go metrics interface.go metrics.go run_metrics_server.go mock l1client.go sentry_log.go service.go txmgr send_state.go send_state_test.go txmgr.go txmgr_test.go codecov.yml docs op-stack README.md package.json src .vuepress config.js enhanceApp.js public manifest.json theme components AlgoliaSearch Dropdown.js Full.js Anchor.js Clipboard.js Common.js Home.js MyTransition.js Navbar DropdownLink.js LanguageDropdown.js NavLink.js NavLinks.js Navbar.js RepoLink.js Page.js PageMeta.js PageNav.js Sidebar DropdownTransition.js Sidebar.js SidebarDropdownLink.js SidebarGroup.js SidebarLink.js SidebarLinks.js SidebarNavLinks.js Theme DarkmodeSwitch.js ThemeColor.js ThemeOptions.js index.js layouts 404.js Layout.js node alias.js chunk-rename.js clean-url.js config.js locales.js plugins.js themeConfig.js utils article.js click-outside.js color.js dom.js groupHeader.js navbar.js navigate.js path.js sidebar.js README.md assets docs understand Celestia-logo-color-color.svg near-logo.svg docs README.md build README.md conf.md data-avail.md derivation.md execution.md explorer.md featured.md getting-started.md hacks.md operations.md sdk.md settlement.md tutorials add-attr.md new-precomp.md predeploys.md contribute.md releases README.md bedrock README.md differences.md explainer.md security README.md faq.md forced-withdrawal.md pause.md policy.md understand design-principles.md explainer.md landscape.md endpoint-monitor CHANGELOG.md README.md cmd main.go config.go endpoint_monitor.go package.json gas-oracle CHANGELOG.md README.md abis OVM_GasPriceOracle.json bindings gaspriceoracle.go flags flags.go gasprices gas_price_updater.go gas_price_updater_test.go l2_gas_pricer.go l2_gas_pricer_test.go main.go metrics handler.go oracle base_fee.go base_fee_test.go config.go gas_price_oracle.go updater_interface.go updater_interface_test.go package.json indexer CHANGELOG.md bindings legacy scc statecommitmentchain.go cmd indexer main.go config.go config_test.go contracts ERC20.sol ERC20.json crypto.go crypto_test.go db airdrop.go db.go deposit.go eth.go guid.go l1block.go locator.go pagination.go sql.go state_batch.go token.go txn.go withdrawal.go flags flags.go flags_test.go indexer.go integration_tests bedrock_test.go metrics metrics.go server server.go services addresses.go airdrop.go l1 bridge bridge.go const.go eth_bridge.go filter.go log.go portal.go standard_bridge.go confirmed_headers.go query.go service.go l2 bridge bridge.go const.go log.go standard_bridge.go confirmed_headers.go service.go query erc20.go headers.go util util.go infra op-replica README.md docker-compose README.md contrib traefik-haproxy README.md check-ecsync-optimism.sh default-kovan.env default-mainnet.env ext-network.yml haproxy-docker-sample.yml traefik-aws.yml traefik-cf.yml default-goerli.env default-kovan.env default-mainnet.env replica-shared.yml replica-toml.yml replica.yml envs goerli-devnet check-for-chaindata.sh data-transport-layer.env l2geth-replica.env goerli-nightly check-for-chaindata.sh data-transport-layer.env l2geth-replica.env kovan-gen4 data-transport-layer.env l2geth-replica.env replica-healthcheck.env kovan-gen5-berlin check-for-chaindata.sh data-transport-layer.env l2geth-replica.env replica-healthcheck.env kovan-gen5-rc6 data-transport-layer.env l2geth-replica.env replica-healthcheck.env kovan-gen5 data-transport-layer.env l2geth-replica.env replica-healthcheck.env kovan data-transport-layer.env l2geth-replica.env mainnet-gen5-berlin check-for-chaindata.sh data-transport-layer.env l2geth-replica.env replica-healthcheck.env mainnet-gen5-l1-berlin check-for-chaindata.sh data-transport-layer.env l2geth-replica.env replica-healthcheck.env mainnet-gen5-l1 data-transport-layer.env l2geth-replica.env replica-healthcheck.env mainnet-gen5-staging-1 data-transport-layer.env l2geth-replica.env replica-healthcheck.env mainnet-gen5 check-for-chaindata.sh data-transport-layer.env l2geth-replica.env replica-healthcheck.env mainnet-l1 data-transport-layer.env l2geth-replica.env replica-healthcheck.env mainnet-staging-1 data-transport-layer.env l2geth-replica.env replica-healthcheck.env mainnet-staging-2 data-transport-layer.env l2geth-replica.env replica-healthcheck.env mainnet data-transport-layer.env l2geth-replica.env kustomize README-kovan-replica-deploy.md README-kovan-replica.md README.md overlays goerli-replica-0-5-14-alpha data-transport-layer-sync-source.env l2geth-replica-sync-source.env replica-healthcheck-v1.env goerli-replica-0-5-14-beta data-transport-layer-sync-source.env l2geth-replica-sync-source.env replica-healthcheck-v1.env goerli-replica-l1-0-5-14-alpha data-transport-layer-sync-source.env l2geth-replica-sync-source.env replica-healthcheck-v1.env goerli-replica-l1-0-5-14-beta data-transport-layer-sync-source.env l2geth-replica-sync-source.env replica-healthcheck-v1.env mainnet-replica-0-5-14-alpha replica-healthcheck-v1.env mainnet-replica-0-5-14-beta replica-healthcheck-v1.env mainnet-replica-0-5-14 replica-healthcheck-v1.env mainnet-replica-l1-0-5-14-beta replica-healthcheck-v1.env mainnet-replica-l1-0-5-14 replica-healthcheck-v1.env mainnet-replica-l1-0-5-15 replica-healthcheck-v1.env public-overlays goerli-replica-0-5-14-alpha data-transport-layer-sync-source.env l2geth-replica-sync-source.env replica-healthcheck-v1.env goerli-replica-0-5-14-beta data-transport-layer-sync-source.env l2geth-replica-sync-source.env replica-healthcheck-v1.env goerli-replica-l1-0-5-14-alpha data-transport-layer-sync-source.env l2geth-replica-sync-source.env replica-healthcheck-v1.env goerli-replica-l1-0-5-14-beta data-transport-layer-sync-source.env l2geth-replica-sync-source.env replica-healthcheck-v1.env mainnet-replica-0-5-14 replica-healthcheck-v1.env mainnet-replica-0-5-17 replica-healthcheck-v1.env scripts check-for-chaindata-berlin.sh check-for-chaindata.sh l2geth-replica-start.sh l2geth.toml test.sh wait-for-deployer.sh wait-for-dtl.sh wait-for-l1.sh wait-for-l2.sh integration-tests .eslintrc.js .lintstagedrc.yml .prettierrc.js CHANGELOG.md README.md ext-test snx.sh hardhat.config.ts package.json tasks check-block-hashes.ts test basic-l1-l2-communication.spec.ts bridged-tokens.spec.ts contracts.spec.ts fee-payment.spec.ts hardfork.spec.ts healthcheck.spec.ts native-eth-ovm-calls.spec.ts native-eth.spec.ts nft-bridge.spec.ts ovmcontext.spec.ts predeploys.spec.ts queue-ingestion.spec.ts replica.spec.ts rpc.spec.ts shared env.ts setup.ts stress-test-helpers.ts utils.ts stress-tests.spec.ts system-addresses.spec.ts verifier.spec.ts whitelist.spec.ts z-batch-serialization.spec.ts tsconfig.json l2geth-exporter CHANGELOG.md bindings CanonicalTransactionChain.go StateCommitmentChain.go collector.go l1contracts main.go main.go package.json l2geth .golangci.yml CHANGELOG.md README.md accounts abi abi.go abi_test.go argument.go bind auth.go backend.go backends simulated.go simulated_test.go base.go base_test.go bind.go bind_test.go template.go topics.go topics_test.go util.go util_test.go doc.go error.go event.go event_test.go method.go method_test.go numbers.go numbers_test.go pack.go pack_test.go reflect.go reflect_test.go type.go type_test.go unpack.go unpack_test.go accounts.go accounts_test.go errors.go external backend.go hd.go hd_test.go keystore account_cache.go account_cache_test.go file_cache.go key.go keystore.go keystore_test.go passphrase.go passphrase_test.go plain.go plain_test.go presale.go testdata v1_test_vector.json v3_test_vector.json very-light-scrypt.json wallet.go watch.go watch_fallback.go manager.go scwallet README.md apdu.go hub.go securechannel.go wallet.go sort.go url.go url_test.go usbwallet hub.go ledger.go trezor.go trezor messages-common.pb.go messages-ethereum.pb.go messages-management.pb.go messages.pb.go trezor.go wallet.go build checksums.txt ci-notes.md ci.go goimports.sh travis_keepalive.sh update-license.go cmd abigen main.go bootnode main.go checkpoint-admin common.go exec.go main.go status.go clef README.md datatypes.md docs qubes qubes-client.py setup.md extapi_changelog.md intapi_changelog.md main.go pythonsigner.py rules.md tests testsigner.js tutorial.md devp2p crawl.go discv4cmd.go dns_cloudflare.go dns_route53.go dns_route53_test.go dnscmd.go enrcmd.go main.go nodeset.go nodesetcmd.go ethkey README.md changepassword.go generate.go inspect.go main.go message.go message_test.go run_test.go utils.go evm compiler.go disasm.go internal compiler compiler.go main.go runner.go staterunner.go faucet faucet.go faucet.html website.go geth accountcmd.go accountcmd_test.go chaincmd.go chaincmd_test.go config.go consolecmd.go consolecmd_test.go dao_test.go genesis_test.go main.go misccmd.go retesteth.go retesteth_copypaste.go run_test.go testdata empty.js guswallet.json init.json passwords.txt wrong-passwords.txt usage.go p2psim main.go puppeth genesis.go genesis_test.go module.go module_dashboard.go module_ethstats.go module_explorer.go module_faucet.go module_nginx.go module_node.go module_wallet.go puppeth.go ssh.go testdata stureby_aleth.json stureby_geth.json stureby_parity.json wizard.go wizard_dashboard.go wizard_ethstats.go wizard_explorer.go wizard_faucet.go wizard_genesis.go wizard_intro.go wizard_netstats.go wizard_network.go wizard_nginx.go wizard_node.go wizard_wallet.go rlpdump main.go utils cmd.go customflags.go customflags_test.go flags.go flags_test.go wnode main.go common big.go bitutil bitutil.go bitutil_test.go compress.go compress_fuzz.go compress_test.go bytes.go bytes_test.go compiler helpers.go solidity.go solidity_test.go test.v.py test_bad.v.py vyper.go vyper_test.go debug.go fdlimit fdlimit_darwin.go fdlimit_freebsd.go fdlimit_test.go fdlimit_unix.go fdlimit_windows.go format.go hexutil hexutil.go hexutil_test.go json.go json_example_test.go json_test.go math big.go big_test.go integer.go integer_test.go mclock mclock.go simclock.go simclock_test.go path.go prque lazyqueue.go lazyqueue_test.go prque.go sstack.go size.go size_test.go test_utils.go types.go types_test.go varbytes.go consensus clique api.go clique.go clique_test.go snapshot.go snapshot_test.go consensus.go errors.go ethash algorithm.go algorithm_test.go api.go consensus.go consensus_test.go ethash.go ethash_test.go sealer.go sealer_test.go misc dao.go forks.go console bridge.go console.go console_test.go prompter.go testdata exec.js preload.js contracts checkpointoracle contract oracle.go oracle.go oracle_test.go core asm asm.go asm_test.go compiler.go compiler_test.go lex_test.go lexer.go bench_test.go block_validator.go block_validator_test.go blockchain.go blockchain_insert.go blockchain_test.go blocks.go bloombits doc.go generator.go generator_test.go matcher.go matcher_test.go scheduler.go scheduler_test.go chain_indexer.go chain_indexer_test.go chain_makers.go chain_makers_test.go dao_test.go error.go events.go evm.go forkid forkid.go forkid_test.go gaspool.go gen_genesis.go gen_genesis_account.go genesis.go genesis_alloc.go genesis_test.go headerchain.go mkalloc.go rawdb accessors_chain.go accessors_chain_test.go accessors_indexes.go accessors_indexes_test.go accessors_metadata.go database.go freezer.go freezer_reinit.go freezer_table.go freezer_table_test.go rollup_indexes.go rollup_indexes_test.go schema.go table.go state access_list.go database.go dump.go iterator.go iterator_test.go journal.go state_object.go state_object_test.go state_test.go statedb.go statedb_test.go sync.go sync_test.go state_prefetcher.go state_processor.go state_transition.go tx_cacher.go tx_journal.go tx_list.go tx_list_test.go tx_noncer.go tx_pool.go tx_pool_test.go types.go types access_list_tx.go block.go block_test.go bloom9.go bloom9_test.go derive_sha.go gen_header_json.go gen_log_json.go gen_receipt_json.go gen_tx_json.go gen_tx_meta_json.go log.go log_test.go receipt.go receipt_test.go transaction.go transaction_meta.go transaction_meta_test.go transaction_signing.go transaction_signing_test.go transaction_test.go vm analysis.go analysis_test.go common.go contract.go contracts.go contracts_test.go doc.go eips.go errors.go evm.go gas.go gas_table.go gas_table_test.go gen_structlog.go instructions.go instructions_test.go int_pool_verifier.go int_pool_verifier_empty.go interface.go interpreter.go intpool.go intpool_test.go jump_table.go logger.go logger_json.go logger_test.go memory.go memory_table.go opcodes.go operations_acl.go operations_acl_optimism.go ovm_state_dump.go runtime doc.go env.go fuzz.go runtime.go runtime_example_test.go runtime_test.go stack.go stack_table.go testdata testcases_add.json testcases_and.json testcases_byte.json testcases_div.json testcases_eq.json testcases_exp.json testcases_gt.json testcases_lt.json testcases_mod.json testcases_mul.json testcases_or.json testcases_sar.json testcases_sdiv.json testcases_sgt.json testcases_shl.json testcases_shr.json testcases_signext.json testcases_slt.json testcases_smod.json testcases_sub.json testcases_xor.json crypto blake2b blake2b.go blake2bAVX2_amd64.go blake2b_amd64.go blake2b_f_fuzz.go blake2b_f_test.go blake2b_generic.go blake2b_ref.go blake2b_test.go blake2x.go register.go bn256 bn256_fast.go bn256_fuzz.go bn256_slow.go cloudflare bn256.go bn256_test.go constants.go curve.go example_test.go gfp.go gfp12.go gfp2.go gfp6.go gfp_decl.go gfp_generic.go gfp_test.go lattice.go lattice_test.go main_test.go mul_amd64.h mul_arm64.h mul_bmi2_amd64.h optate.go twist.go google bn256.go bn256_test.go constants.go curve.go example_test.go gfp12.go gfp2.go gfp6.go main_test.go optate.go twist.go crypto.go crypto_test.go ecies ecies.go ecies_test.go params.go secp256k1 curve.go ext.h libsecp256k1 .travis.yml README.md autogen.sh contrib lax_der_parsing.c lax_der_parsing.h lax_der_privatekey_parsing.c lax_der_privatekey_parsing.h include secp256k1.h secp256k1_ecdh.h secp256k1_recovery.h src basic-config.h bench.h bench_ecdh.c bench_internal.c bench_recover.c bench_schnorr_verify.c bench_sign.c bench_verify.c ecdsa.h ecdsa_impl.h eckey.h eckey_impl.h ecmult.h ecmult_const.h ecmult_const_impl.h ecmult_gen.h ecmult_gen_impl.h ecmult_impl.h field.h field_10x26.h field_10x26_impl.h field_5x52.h field_5x52_asm_impl.h field_5x52_impl.h field_5x52_int128_impl.h field_impl.h gen_context.c group.h group_impl.h hash.h hash_impl.h java org bitcoin NativeSecp256k1.java NativeSecp256k1Test.java NativeSecp256k1Util.java Secp256k1Context.java org_bitcoin_NativeSecp256k1.c org_bitcoin_NativeSecp256k1.h org_bitcoin_Secp256k1Context.c org_bitcoin_Secp256k1Context.h modules ecdh main_impl.h tests_impl.h recovery main_impl.h tests_impl.h num.h num_gmp.h num_gmp_impl.h num_impl.h scalar.h scalar_4x64.h scalar_4x64_impl.h scalar_8x32.h scalar_8x32_impl.h scalar_impl.h scalar_low.h scalar_low_impl.h secp256k1.c testrand.h testrand_impl.h tests.c tests_exhaustive.c util.h secp256.go secp256_test.go signature_cgo.go signature_nocgo.go signature_test.go eth api.go api_backend.go api_test.go api_tracer.go backend.go bloombits.go config.go downloader api.go downloader.go downloader_test.go events.go fakepeer.go metrics.go modes.go peer.go queue.go statesync.go testchain_test.go types.go enr_entry.go fetcher fetcher.go fetcher_test.go metrics.go filters api.go api_test.go bench_test.go filter.go filter_system.go filter_system_test.go filter_test.go gasprice gasprice.go rollup_gasprice.go gen_config.go handler.go handler_test.go helper_test.go metrics.go peer.go protocol.go protocol_test.go sync.go sync_test.go tracers internal tracers 4byte_tracer.js assets.go bigram_tracer.js call_tracer.js evmdis_tracer.js noop_tracer.js opcount_tracer.js prestate_tracer.js tracers.go trigram_tracer.js unigram_tracer.js testdata call_tracer_create.json call_tracer_deep_calls.json call_tracer_delegatecall.json call_tracer_inner_create_oog_outer_throw.json call_tracer_inner_throw_outer_revert.json call_tracer_oog.json call_tracer_revert.json call_tracer_simple.json call_tracer_throw.json tracer.go tracer_test.go tracers.go tracers_test.go ethclient ethclient.go ethclient_test.go gen_rpc_tx_meta_json.go signer.go ethdb batch.go database.go dbtest testsuite.go iterator.go leveldb leveldb.go leveldb_test.go memorydb memorydb.go memorydb_test.go ethstats ethstats.go event event.go event_test.go example_feed_test.go example_scope_test.go example_subscription_test.go example_test.go feed.go feed_test.go subscription.go subscription_test.go graphql graphiql.go graphql.go graphql_test.go schema.go service.go interfaces.go internal build archive.go azure.go download.go env.go pgp.go util.go cmdtest test_cmd.go debug api.go flags.go loudpanic.go loudpanic_fallback.go trace.go trace_fallback.go ethapi addrlock.go api.go backend.go guide guide.go guide_test.go jsre completion.go completion_test.go deps bignumber.js bindata.go deps.go web3.js jsre.go jsre_test.go pretty.go testlog testlog.go web3ext web3ext.go les api.go api_backend.go api_test.go balance.go balance_test.go benchmark.go bloombits.go checkpointoracle oracle.go client.go client_handler.go clientpool.go clientpool_test.go commons.go costtracker.go distributor.go distributor_test.go enr_entry.go execqueue.go execqueue_test.go fetcher.go flowcontrol control.go logger.go manager.go manager_test.go handler_test.go metrics.go odr.go odr_requests.go odr_test.go peer.go peer_test.go protocol.go randselect.go randselect_test.go request_test.go retrieve.go server.go server_handler.go serverpool.go servingqueue.go sync.go sync_test.go test_helper.go txrelay.go ulc.go ulc_test.go light lightchain.go lightchain_test.go nodeset.go odr.go odr_test.go odr_util.go postprocess.go trie.go trie_test.go txpool.go txpool_test.go log README.md README_ETHEREUM.md doc.go format.go handler.go handler_glog.go handler_go13.go handler_go14.go logger.go root.go syslog.go metrics FORK.md README.md counter.go counter_test.go cpu.go cpu_syscall.go cpu_windows.go debug.go debug_test.go disk.go disk_linux.go disk_nop.go doc.go ewma.go ewma_test.go exp exp.go gauge.go gauge_float64.go gauge_float64_test.go gauge_test.go graphite.go graphite_test.go healthcheck.go histogram.go histogram_test.go influxdb README.md influxdb.go init_test.go json.go json_test.go librato client.go librato.go log.go memory.md meter.go meter_test.go metrics.go metrics_test.go opentsdb.go opentsdb_test.go prometheus collector.go prometheus.go registry.go registry_test.go resetting_timer.go resetting_timer_test.go runtime.go runtime_cgo.go runtime_gccpufraction.go runtime_no_cgo.go runtime_no_gccpufraction.go runtime_test.go sample.go sample_test.go syslog.go timer.go timer_test.go validate.sh writer.go writer_test.go miner miner.go stress_clique.go stress_ethash.go unconfirmed.go unconfirmed_test.go worker.go worker_test.go mobile accounts.go android_test.go big.go bind.go common.go context.go discover.go doc.go ethclient.go ethereum.go geth.go geth_android.go geth_ios.go geth_other.go init.go interface.go interface_test.go logger.go p2p.go params.go primitives.go shhclient.go types.go vm.go node api.go config.go config_test.go defaults.go doc.go errors.go node.go node_example_test.go node_test.go service.go service_test.go utils_test.go p2p dial.go dial_test.go discover common.go lookup.go node.go ntp.go table.go table_test.go table_util_test.go v4_lookup_test.go v4_udp.go v4_udp_test.go discv5 database.go database_test.go metrics.go net.go net_test.go node.go node_test.go nodeevent_string.go sim_run_test.go sim_test.go sim_testmain_test.go table.go table_test.go ticket.go topic.go topic_test.go udp.go dnsdisc client.go client_test.go doc.go error.go sync.go sync_test.go tree.go tree_test.go enode idscheme.go idscheme_test.go iter.go iter_test.go localnode.go localnode_test.go node.go node_test.go nodedb.go nodedb_test.go urlv4.go urlv4_test.go enr enr.go enr_test.go entries.go message.go message_test.go metrics.go nat nat.go nat_test.go natpmp.go natupnp.go natupnp_test.go netutil addrutil.go error.go error_test.go iptrack.go iptrack_test.go net.go net_test.go toobig_notwindows.go toobig_windows.go peer.go peer_error.go peer_test.go protocol.go rlpx.go rlpx_test.go server.go server_test.go simulations README.md adapters exec.go inproc.go inproc_test.go types.go connect.go connect_test.go events.go examples README.md ping-pong.go ping-pong.sh http.go http_test.go mocker.go mocker_test.go network.go network_test.go pipes pipes.go simulation.go test.go testing peerpool.go protocolsession.go protocoltester.go util.go util_test.go package.json params bootnodes.go config.go config_test.go dao.go denomination.go network_params.go protocol_params.go version.go rlp decode.go decode_tail_test.go decode_test.go doc.go encode.go encode_test.go encoder_example_test.go raw.go raw_test.go typecache.go rollup client.go client_test.go config.go dump constants.go types.go fees bindings gaspriceoracle.go gaspriceoracle_test.go rollup_fee.go rollup_fee_test.go rcfg config.go system_address.go system_address_test.go sync_service.go sync_service_test.go types.go util vm_errors.go rpc client.go client_example_test.go client_test.go constants_unix.go constants_unix_nocgo.go doc.go endpoints.go errors.go gzip.go handler.go http.go http_test.go inproc.go ipc.go ipc_js.go ipc_unix.go ipc_windows.go json.go server.go server_test.go service.go stdio.go subscription.go subscription_test.go testdata invalid-badid.js invalid-batch.js invalid-idonly.js invalid-nonobj.js invalid-syntax.json reqresp-batch.js reqresp-echo.js reqresp-namedparam.js reqresp-noargsrets.js reqresp-nomethod.js reqresp-noparam.js reqresp-paramsnull.js revcall.js revcall2.js subscription.js testservice_test.go types.go types_test.go websocket.go websocket_test.go scripts bindings.sh init.sh start.sh signer core api.go api_test.go auditlog.go cliui.go signed_data.go signed_data_internal_test.go signed_data_test.go stdioui.go testdata README.md arrays-1.json custom_arraytype.json eip712.json expfail_arraytype_overload.json expfail_datamismatch_1.json expfail_extradata-1.json expfail_extradata-2.json expfail_malformeddomainkeys.json expfail_nonexistant_type.json expfail_toolargeuint.json expfail_toolargeuint2.json expfail_unconvertiblefloat.json expfail_unconvertiblefloat2.json types.go uiapi.go validation.go validation_test.go fourbyte abi.go abi_test.go fourbyte.go fourbyte_test.go validation.go validation_test.go rules deps bignumber.js bindata.go deps.go rules.go rules_test.go storage aes_gcm_storage.go aes_gcm_storage_test.go storage.go statedumper dumper.go dumper_test.go swarm README.md tests block_test.go block_test_util.go difficulty_test.go difficulty_test_util.go fuzzers README.md keystore keystore-fuzzer.go rlp rlp_fuzzer.go trie trie-fuzzer.go whisperv6 whisper-fuzzer.go gen_btheader.go gen_difficultytest.go gen_stenv.go gen_sttransaction.go gen_vmexec.go init.go init_test.go rlp_test.go rlp_test_util.go solidity bytecode.js migrations 1_initial_migration.js 2_opCodes_migration.js test opCodes.js truffle-config.js state_test.go state_test_util.go transaction_test.go transaction_test_util.go vm_test.go vm_test_util.go trie database.go database_test.go encoding.go encoding_test.go errors.go hasher.go iterator.go iterator_test.go node.go node_test.go proof.go proof_test.go secure_trie.go secure_trie_test.go sync.go sync_bloom.go sync_test.go trie.go trie_test.go whisper mailserver mailserver.go server_test.go shhclient client.go whisperv6 api.go api_test.go benchmarks_test.go config.go doc.go envelope.go envelope_test.go filter.go filter_test.go gen_criteria_json.go gen_message_json.go gen_newmessage_json.go message.go message_test.go peer.go peer_test.go topic.go topic_test.go whisper.go whisper_test.go |---- | Signer info snapshot %d lerna.json op-batcher batcher batch_submitter.go channel_builder.go channel_builder_test.go channel_config_test.go channel_manager.go channel_manager_test.go config.go driver.go tx_data.go utils.go cmd doc cmd.go main.go flags flags.go metrics metrics.go noop.go rpc api.go config.go op-bindings README.md ast canonicalize.go canonicalize_test.go testdata public-variables.json simple.json values-in-storage.json bindings addressmanager.go basefeevault.go deployerwhitelist.go deployerwhitelist_more.go erc20.go gaspriceoracle.go governancetoken_more.go l1block.go l1block_more.go l1blocknumber.go l1blocknumber_more.go l1crossdomainmessenger.go l1crossdomainmessenger_more.go l1erc721bridge.go l1feevault.go l1standardbridge.go l2crossdomainmessenger.go l2crossdomainmessenger_more.go l2erc721bridge.go l2erc721bridge_more.go l2outputoracle.go l2standardbridge.go l2standardbridge_more.go l2tol1messagepasser.go l2tol1messagepasser_more.go legacyerc20eth.go legacyerc20eth_more.go legacymessagepasser.go legacymessagepasser_more.go optimismmintableerc20.go optimismmintableerc20factory.go optimismmintableerc20factory_more.go optimismmintableerc721factory.go optimismmintableerc721factory_more.go optimismportal.go optimismportal_more.go proxy.go proxy_more.go proxyadmin.go proxyadmin_more.go registry.go sequencerfeevault.go sequencerfeevault_more.go systemconfig.go systemconfig_more.go weth9.go weth9_more.go doc.go gen main.go gen_bindings.sh hardhat hardhat.go hardhat_test.go testdata artifacts build-info 41b5106372a301360350245ee188494f.json contracts HelloWorld.sol HelloWorld.dbg.json HelloWorld.json deployments alpha OptimismPortal.json OptimismPortalProxy.json goerli OptimismPortal.json OptimismPortalProxy.json types.go utils.go legacy-bindings CanonicalTransactionChain.go StateCommitmentChain.go predeploys addresses.go addresses_test.go dev_addresses.go solc types.go op-celestia README.md celestia celestia.go celestia_test.go op-chain-ops README.md cmd check-migration main.go eof-crawler main.go inject-mints main.go op-migrate main.go rollover main.go withdrawals main.go crossdomain alias.go alias_test.go encoding.go encoding_test.go hashing.go legacy.go legacy_withdrawal.go legacy_withdrawal_test.go message.go message_test.go migrate.go migrate_test.go params.go precheck.go precheck_test.go testdata README.md call-traces 0x26b854fe0b8f0c5ad15d5c3c1291107cc870f5d7351cfc399e23e68f22231fbe.json 0x32d3b5a0178a33cfbf904cfd36f66a13ff8576f409f15aae86dc3ff0e101c93a.json 0x38236157c6941ef64f4dd0dfa7efed4a82ef9fccdcdda75a8ee89cbe831b182b.json 0xed57a510022157b14542491a501daed1d58003e4b274b331d2fc40dcc43f0941.json receipts 0x26b854fe0b8f0c5ad15d5c3c1291107cc870f5d7351cfc399e23e68f22231fbe.json 0x32d3b5a0178a33cfbf904cfd36f66a13ff8576f409f15aae86dc3ff0e101c93a.json 0x38236157c6941ef64f4dd0dfa7efed4a82ef9fccdcdda75a8ee89cbe831b182b.json 0xed57a510022157b14542491a501daed1d58003e4b274b331d2fc40dcc43f0941.json state-diffs 0x26b854fe0b8f0c5ad15d5c3c1291107cc870f5d7351cfc399e23e68f22231fbe.json 0x32d3b5a0178a33cfbf904cfd36f66a13ff8576f409f15aae86dc3ff0e101c93a.json 0x38236157c6941ef64f4dd0dfa7efed4a82ef9fccdcdda75a8ee89cbe831b182b.json 0xed57a510022157b14542491a501daed1d58003e4b274b331d2fc40dcc43f0941.json trace.sh witness.txt types.go types_test.go withdrawal.go withdrawal_test.go withdrawals.go withdrawals_test.go witness.go witness_test.go db util.go deployer deployer.go eof README.md eof_crawler.go ether addresses.go cli.go db.go genesis.go migrate.go migrate_test.go storage.go genesis check.go config.go config_test.go db_migration.go genesis.go helpers.go layer_one.go layer_one_test.go layer_two.go layer_two_test.go migration_action action.go setters.go setters_test.go test_util.go testdata test-deploy-config-devnet-l1.json test-deploy-config-full.json immutables immutables.go immutables_test.go state encoding.go memory_db.go memory_db_test.go state.go state_test.go testdata contract.go layout.json util state_iterator.go state_iterator_test.go util.go op-e2e actions action.go blocktime_test.go fork_test.go garbage_channel_out.go l1_miner.go l1_miner_test.go l1_replica.go l1_replica_test.go l2_batcher.go l2_batcher_test.go l2_engine.go l2_engine_test.go l2_proposer.go l2_proposer_test.go l2_sequencer.go l2_sequencer_test.go l2_verifier.go l2_verifier_test.go reorg_test.go sync_test.go system_config_test.go user.go user_test.go bridge_test.go e2eutils addresses.go addresses_test.go secrets.go setup.go setup_test.go testing.go waits.go geth.go helper.go migration_test.go op_geth.go op_geth_test.go setup.go system_fpp_test.go system_test.go system_tob_test.go tracer.go tx_helper.go withdrawal_helper.go [ CHAIN B ] op-exporter CHANGELOG.md README.md collector.go k8sClient main.go main.go package.json rpc.go version version.go op-heartbeat cmd main.go config.go flags flags.go metrics.go service.go service_test.go whitelists.go op-node README.md chaincfg chains.go client client.go polling.go polling_test.go rate_limited.go rpc.go cmd batch_decoder README.md fetch fetch.go main.go reassemble reassemble.go doc cmd.go genesis cmd.go main.go p2p cmd.go cmd_test.go stateviz assets index.html main.js main.go eth account_proof.go account_proof_test.go block_info.go heads.go id.go label.go output.go receipts.go ssz.go ssz_test.go status.go sync_status.go transactions.go types.go types_test.go flags flags.go flags_test.go p2p_flags.go util.go heartbeat service.go service_test.go http http.go metrics caching.go events.go metrics.go node api.go client.go comms.go config.go node.go runtime_config.go server.go server_test.go p2p band_scorer_test.go cli load_config.go load_signer.go config.go discovery.go gossip.go gossip_test.go host.go host_test.go mocks ConnectionGater.go GossipMetricer.go PeerGater.go Peerstore.go node.go notifications.go peer_gater.go peer_gater_test.go peer_params.go peer_params_test.go peer_scorer.go peer_scorer_test.go peer_scores.go peer_scores_test.go prepared.go rpc_api.go rpc_client.go rpc_server.go signer.go signer_test.go sync.go sync_test.go topic_params.go rollup derive attributes.go attributes_queue.go attributes_queue_test.go attributes_test.go batch.go batch_queue.go batch_queue_test.go batch_test.go batch_tob_test.go batches.go batches_test.go calldata_source.go calldata_source_test.go channel.go channel_bank.go channel_bank_test.go channel_in_reader.go channel_out.go channel_out_test.go channel_test.go deposit_log.go deposit_log_test.go deposit_log_tob_test.go deposit_source.go deposits.go doc.go engine_consolidate.go engine_queue.go engine_queue_test.go engine_update.go error.go frame.go frame_queue.go frame_test.go fuzz_parsers_test.go l1_block_info.go l1_block_info_test.go l1_block_info_tob_test.go l1_retrieval.go l1_retrieval_test.go l1_traversal.go l1_traversal_test.go l2block_util.go params.go payload_util.go payloads_queue.go payloads_queue_test.go pipeline.go pipeline_test.go system_config.go system_config_test.go test random.go driver conf_depth.go conf_depth_test.go config.go driver.go l1_state.go metered_engine.go origin_selector.go origin_selector_test.go sequencer.go sequencer_test.go state.go output_root.go sync start.go start_test.go types.go types_test.go service.go sources batching.go batching_test.go caching cache.go debug_client.go engine_client.go eth_client.go eth_client_test.go l1_client.go l2_client.go limit.go receipts.go receipts_test.go rollupclient.go sync_client.go types.go types_test.go testlog README.md testlog.go testutils assertions.go block_id.go deposits.go fake_chain.go fuzzerutils fuzzer_functions.go l1info.go metrics.go mock_debug_client.go mock_engine.go mock_eth_client.go mock_l1.go mock_l2.go random.go rpc_err_faker.go runtime_config.go version version.go withdrawals proof.go testdata bridge-withdrawal.json utils.go utils_test.go op-program README.md client boot.go boot_test.go driver driver.go driver_test.go env.go l1 cache.go cache_test.go client.go client_test.go hints.go oracle.go oracle_test.go test stub_oracle.go l2 cache.go cache_test.go db.go db_test.go engine.go engine_backend.go engine_backend_test.go engine_test.go engineapi block_processor.go l2_engine_api.go test l2_engine_api_tests.go hints.go oracle.go oracle_test.go test stub_oracle.go mpt db.go trie.go trie_test.go program.go host cmd main.go main_test.go config config.go config_test.go flags flags.go flags_test.go host.go kvstore disk.go disk_test.go kv.go kv_test.go local.go local_test.go mem.go mem_test.go splitter.go splitter_test.go l1 fetcher.go fetcher_test.go l1.go l2 fetcher.go fetcher_test.go l2.go prefetcher prefetcher.go prefetcher_test.go retry.go retry_test.go version version.go io filechan.go preimage hints.go hints_test.go iface.go oracle.go oracle_test.go op-proposer cmd doc cmd.go main.go flags flags.go metrics metrics.go noop.go proposer abi_test.go config.go l2_output_submitter.go utils.go op-service backoff operation.go operation_test.go strategies.go strategies_test.go crypto signature.go httputil server.go wrapped_response_writer.go log cli.go defaults.go http.go metrics balance.go balance_test.go cli.go event.go factory.go http.go node_info.go ref_metrics.go registry.go server.go pprof cli.go server.go rpc cli.go server.go server_test.go solabi util.go utils_test.go tls certman certman.go certman_test.go cli.go tlsinfo.go txmgr cli.go metrics noop.go tx_metrics.go mocks TxManager.go price_bump_test.go send_state.go send_state_test.go txmgr.go txmgr_test.go util.go op-signer README.md client client.go config.go transaction_args.go op-wheel cheat cheat.go cmd main.go commands.go engine engine.go metrics.go ops-bedrock-goerli docker-compose.yml entrypoint.sh envs common-blockscout.env common-frontend.env common-smart-contract-verifier.env common-stats.env common-visualizer.env op-batcher-entrypoint.sh p2p-node-key.txt up.sh ops-bedrock devnet-genesis-entrypoint.sh devnet-up.sh docker-compose-devnet.yml docker-compose-testnet.yml entrypoint.sh envs common-blockscout.env common-frontend.env common-smart-contract-verifier.env common-stats.env common-visualizer.env light-client.toml op-batcher-entrypoint.sh op-batcher-key.txt p2p-node-key.txt test-integration.sh test-jwt-secret.txt test-jwt-secret2.txt testnet-up.sh tools README.md generate_replica.py ops README.md check-changed main.py requirements.txt docker-compose-metrics.yml docker-compose.yml docker ci-builder CHANGELOG.md check-changed.sh foundry CHANGELOG.md package.json grafana provisioning dashboards config.yml datasources influxdb.yml prometheus.yml hardhat CHANGELOG.md hardhat.config.js package.json prometheus prometheus.yml scripts dashboard-sync.py envs batch-submitter.env dtl.env geth.env indexer.env l1_chain.env metrics.env scripts batch-submitter.sh build-ci.sh ci-docker-tag-op-stack-release.sh ci-versions.js deployer.sh detector.sh dtl.sh geth.sh integration-tests.sh relayer.sh stats.sh tag-bedrock-go-modules.sh update-op-geth.py wait-for-sequencer.sh tag-service requirements.txt tag-service.py package.json packages actor-tests .eslintrc.js .lintstagedrc.yml .prettierrc.js CHANGELOG.md README.md bedrock account-sends.ts contracts ERC20.json deployments.ts deposit-eth.ts utils.ts lib actor.ts convenience.ts faucet.ts logger.ts metrics.ts runner.ts package.json tsconfig.json atst .eslintrc.json .lintstagedrc.yml CHANGELOG.md README.md assets README.md docs cli.md sdk.md package.json src README.md cli.ts commands read.spec.ts read.ts write.spec.ts write.ts constants attestationStationAddress.ts defaultRpcUrl.ts index.ts lib abi.spec.ts abi.ts castAsDataType.ts createKey.spec.ts createKey.ts createValue.ts getEvents.spec.ts getEvents.ts logger.spec.ts logger.ts parseAttestationBytes.spec.ts parseAttestationBytes.ts prepareWriteAttestation.spec.ts prepareWriteAttestation.ts prepareWriteAttestations.spec.ts prepareWriteAttestations.ts readAttestation.spec.ts readAttestation.ts readAttestations.spec.ts readAttestations.ts writeAttestation.spec.ts writeAttestation.ts react.ts test watchConsole.ts types AttestationCreatedEvent.ts AttestationReadParams.ts DataTypeOption.ts ParseBytesReturn.ts WagmiBytes.ts tsconfig.json tsup.config.ts vite.config.ts wagmi.config.ts balance-monitor .eslintrc.js .prettierrc.js CHANGELOG.md README.md forta.config.example.json package.json scripts test.sh src agent.spec.ts agent.ts utils.ts tsconfig.json chain-mon .eslintrc.js .lintstagedrc.yml .prettierrc.js CHANGELOG.md README.md package.json src balance-mon service.ts drippie-mon service.ts index.ts wd-mon service.ts tsconfig.json common-ts .eslintrc.js .lintstagedrc.yml .prettierrc.js CHANGELOG.md README.md package.json src base-service base-service-v2.ts base-service.ts index.ts metrics.ts options.ts router.ts validators.ts common index.ts logger.ts metrics.ts provider.ts index.ts test metrics.spec.ts service-spec.ts tsconfig.json contracts-bedrock .eslintrc.js .prettierrc.js .solhint.json CHANGELOG.md README.md deploy-config devnetL1.json devnetL1.ts final-migration-rehearsal.json final-migration-rehearsal.ts goerli-forked.json goerli-forked.ts goerli.json goerli.ts hardhat.json hardhat.ts internal-devnet.json local.ts mainnet.json mainnet.ts near-goerli.json near-goerli.ts deploy 000-ProxyAdmin.ts 001-AddressManager.ts 002-L1StandardBridgeProxy.ts 003-L2OutputOracleProxy.ts 004-L1CrossDomainMessengerProxy.ts 005-OptimismPortalProxy.ts 006-OptimismMintableERC20FactoryProxy.ts 007-L1ERC721BridgeProxy.ts 008-SystemConfigProxy.ts 009-SystemDictatorProxy.ts 010-L1CrossDomainMessengerImpl.ts 011-L1StandardBridgeImpl.ts 012-L2OutputOracleImpl.ts 013-OptimismPortalImpl.ts 014-OptimismMintableERC20FactoryImpl.ts 015-L1ERC721BridgeImpl.ts 016-PortalSenderImpl.ts 017-SystemConfigImpl.ts 018-SystemDictatorImpl.ts 019-SystemDictatorInit.ts 020-SystemDictatorSteps-1.ts 021-SystemDictatorSteps-2.ts 100-L1BlockImpl.ts 101-L2CrossDomainMessengerImpl.ts 102-L2StandardBridgeImpl.ts 103-L2ToL1MessagePasserImpl.ts 104-L2ERC721BridgeImpl.ts 105-GasPriceOracleImpl.ts 106-SequencerFeeVaultImpl.ts 107-BaseFeeVaultImpl.ts 108-L1FeeVaultImpl.ts 109-OptimismMintableERC20FactoryImpl.ts 110-OptimismMintableERC721FactoryImpl.ts deployments final-migration-rehearsal L1CrossDomainMessenger.json L1StandardBridge.json L2OutputOracle.json L2OutputOracleProxy.json OptimismMintableERC20Factory.json OptimismMintableERC20FactoryProxy.json OptimismPortal.json OptimismPortalProxy.json PortalSender.json ProxyAdmin.json SystemConfig.json SystemConfigProxy.json SystemDictator.json SystemDictatorProxy.json solcInputs 3297925b58a585af93360a0e57a052e0.json 6e8075afa6dc9884208ae18fcd511409.json ee9768957018483913ed24aec25c2468.json goerli L1CrossDomainMessenger.json L1CrossDomainMessengerProxy.json L1ERC721Bridge.json L1ERC721BridgeProxy.json L1StandardBridge.json L1StandardBridgeProxy.json L2OutputOracle.json L2OutputOracleProxy.json OptimismMintableERC20Factory.json OptimismMintableERC20FactoryProxy.json OptimismPortal.json OptimismPortalProxy.json PortalSender.json ProxyAdmin.json SystemConfig.json SystemConfigProxy.json SystemDictator.json SystemDictatorProxy.json internal-devnet L1CrossDomainMessenger.json L1ERC721Bridge.json L1ERC721BridgeProxy.json L1StandardBridge.json L2OutputOracle.json L2OutputOracleProxy.json Lib_AddressManager.json OptimismMintableERC20Factory.json OptimismMintableERC20FactoryProxy.json OptimismPortal.json OptimismPortalProxy.json PortalSender.json ProxyAdmin.json Proxy__OVM_L1CrossDomainMessenger.json Proxy__OVM_L1StandardBridge.json SystemConfig.json SystemConfigProxy.json SystemDictator.json SystemDictatorProxy.json mainnet L1ERC721Bridge.json L1ERC721BridgeProxy.json near-goerli L1Block.json L1CrossDomainMessenger.json L1ERC721Bridge.json L1ERC721BridgeProxy.json L1StandardBridge.json L2OutputOracle.json L2OutputOracleProxy.json Lib_AddressManager.json OptimismMintableERC20Factory.json OptimismMintableERC20FactoryProxy.json OptimismPortal.json OptimismPortalProxy.json PortalSender.json ProxyAdmin.json Proxy__OVM_L1CrossDomainMessenger.json Proxy__OVM_L1StandardBridge.json SystemConfig.json SystemConfigProxy.json SystemDictator.json SystemDictatorProxy.json optimism-goerli BaseFeeVault.json GasPriceOracle.json L1Block.json L1FeeVault.json L2CrossDomainMessenger.json L2ERC721Bridge.json L2StandardBridge.json L2ToL1MessagePasser.json MintManager.json OptimismMintableERC20Factory.json OptimismMintableERC721Factory.json SequencerFeeVault.json solcInputs 122f564fe2b0653be019a081e37a8225.json b1df373a9ed51b3903b61f56faa9a78f.json cf9f12504fd2a3f54e63ce13e7c60cdc.json d3e2ac71ccbe65f9ada376945e1c05bf.json optimism-mainnet MintManager.json OptimismMintableERC721Factory.json OptimismMintableERC721FactoryProxy.json solcInputs b1df373a9ed51b3903b61f56faa9a78f.json foundry.toml hardhat.config.ts invariant-docs AddressAliasing.md Burn.md CrossDomainMessenger.md Encoding.md Hashing.md L2OutputOracle.md OptimismPortal.md README.md ResourceMetering.md SafeCall.md SystemConfig.md layout-lock.json package.json scripts differential-testing differential-testing.go utils.go forge-test-names.ts generate-artifacts.ts invariant-doc-gen.ts slither.sh storage-snapshot.sh validate-deploy-configs.sh verify-foundry-install.ts slither.config.json slither.db.json src constants.ts contract-defs.ts deploy-config.ts deploy-utils.ts index.ts tasks accounts.ts check-l2.ts check-op-node.ts deposits.ts forge-verify.ts generate-deploy-config.ts index.ts rekey.ts solidity.ts update-dynamic-oracle-config.ts validate-spacers.ts watch.ts test-case-generator README.md cmd fuzz.go trie trie.go tsconfig.build.json tsconfig.json contracts-periphery .eslintrc.js .lintstagedrc.yml .prettierrc.js .solcover.js .solhint.json CHANGELOG.md README.md codechecks.yml config deploy ethereum.ts goerli.ts hardhat.ts localhost.ts mainnet.ts optimism-goerli.ts optimism.ts drippie ethereum.ts goerli.ts kovan.ts mainnet.ts optimism-kovan.ts deploy PeripheryProxyAdmin.ts RetroReceiver.ts drippie Drippie.ts dripchecks CheckBalanceHigh.ts CheckBalanceLow.ts CheckGelatoLow.ts CheckTrue.ts op-nft AttestationStationImpl.ts AttestationStationProxy.ts OptimistAllowlistImpl.ts OptimistAllowlistProxy.ts OptimistImpl.ts OptimistInviterImpl.ts OptimistInviterProxy.ts OptimistProxy.ts deployments goerli CheckBalanceHigh.json CheckBalanceLow.json CheckGelatoLow.json CheckTrue.json Drippie.json solcInputs 2373b7ba869baea4fec58e6e7f7b8988.json ab9b77493f35e63b7a63fb2fa8d618b4.json mainnet-forked AssetReceiver.json CheckBalanceHigh.json CheckBalanceLow.json CheckGelatoLow.json CheckTrue.json Drippie.json L1ERC721Bridge.json L1ERC721BridgeProxy.json TeleportrWithdrawer.json solcInputs 5bd191b00ea9c0cd6028a01f6227b05c.json 66d28de48de020e62747d42ffe3118e7.json ab9b77493f35e63b7a63fb2fa8d618b4.json b09909e91a3ff9823ceba49a3a845230.json mainnet AssetReceiver.json CheckBalanceHigh.json CheckBalanceLow.json CheckGelatoLow.json CheckTrue.json Drippie.json TeleportrWithdrawer.json solcInputs 2373b7ba869baea4fec58e6e7f7b8988.json 5bd191b00ea9c0cd6028a01f6227b05c.json 66d28de48de020e62747d42ffe3118e7.json ab9b77493f35e63b7a63fb2fa8d618b4.json b09909e91a3ff9823ceba49a3a845230.json optimism-goerli AttestationStation.json AttestationStationProxy.json CheckBalanceHigh.json CheckBalanceLow.json CheckGelatoLow.json CheckTrue.json Drippie.json L2ERC721Bridge.json L2ERC721BridgeProxy.json OptimismMintableERC721Factory.json OptimismMintableERC721FactoryProxy.json Optimist.json OptimistAllowlist.json OptimistAllowlistProxy.json OptimistInviter.json OptimistInviterProxy.json OptimistProxy.json solcInputs 3aa2ad7d005d9515a1f12df8da17d178.json 45837d34ff24b9cb2ae34232b60ea874.json ab9b77493f35e63b7a63fb2fa8d618b4.json cb12280dddcf446d7c90129cbaba29bb.json d7155764d4bdb814f10e1bb45296292b.json optimism AssetReceiver.json AttestationStation.json AttestationStationProxy.json L2ERC721Bridge.json Optimist.json OptimistAllowlist.json OptimistAllowlistProxy.json OptimistInviter.json OptimistInviterProxy.json OptimistProxy.json solcInputs 3aa2ad7d005d9515a1f12df8da17d178.json 45837d34ff24b9cb2ae34232b60ea874.json 5bd191b00ea9c0cd6028a01f6227b05c.json 66d28de48de020e62747d42ffe3118e7.json ab9b77493f35e63b7a63fb2fa8d618b4.json d7155764d4bdb814f10e1bb45296292b.json foundry.toml hardhat.config.ts package.json scripts deploy-nft-bridge.sh slither.config.json src config deploy.ts drippie.ts index.ts etherscan.ts gnosis-safe-checksum.ts helpers setupProxyContract.ts index.ts nft-bridge-deploy-helpers.ts tasks index.ts install-drippie-config-multisig.ts install-drippie-config.ts tsconfig.json contracts .eslintrc.js .lintstagedrc.yml .prettierrc.js .solcover.js .solhint.json CHANGELOG.md README.md codechecks.yml deploy-config goerli-nightly.ts goerli.ts hardhat.ts kovan.ts local.ts mainnet.ts deploy 000-hardhat-setup.ts 001-Lib_AddressManager.deploy.ts 002-OVM_ChainStorageContainer_ctc_batches.deploy.ts 003-OVM_ChainStorageContainer_scc_batches.deploy.ts 004-OVM_CanonicalTransactionChain.deploy.ts 005-OVM_StateCommitmentChain.deploy.ts 006-OVM_BondManager.deploy.ts 007-OVM_L1CrossDomainMessenger.deploy.ts 008-Proxy__OVM_L1CrossDomainMessenger.deploy.ts 009-Proxy__OVM_L1StandardBridge.deploy.ts 010-AddressDictator.deploy.ts 011-set-addresses.ts 012-initialize-Proxy__L1CrossDomainMessenger.ts 013-ChugSplashDictator.deploy.ts 014-OVM_L1StandardBridge.deploy.ts 015-finalize.ts 016-fund-accounts.ts deployments README.md goerli AddressDictator.json BondManager.json CanonicalTransactionChain.json ChainStorageContainer-CTC-batches.json ChainStorageContainer-SCC-batches.json ChugSplashDictator.json L1StandardBridge_for_verification_only.json Lib_AddressManager.json OVM_L1CrossDomainMessenger.json Proxy__OVM_L1CrossDomainMessenger.json Proxy__OVM_L1StandardBridge.json README.md StateCommitmentChain.json solcInputs 0a41276e1e61949b5de1e4f1cd89fb6c.json 0b6b0f2f7cbf6cb1011b2fd242eb9f69.json 12afc2c6487cfec4471fc920fd475624.json 1845b32709cda2bc0b584a5e3f043e7b.json 1922d6575f24d34049f0f77444309807.json 5aae07ef9122520401369865ebc0eb3e.json 5f4e2d2e170708499f05344e000df330.json 71a3e0efd80de83ffb4a21a5a9f6be0a.json 76c096070f4b72a86045eb6ab63709ed.json 8d6d99a3584a757f4a6db32b22382ae9.json 96c709f6604e7bd8a94077f137b56cbc.json mainnet AddressDictator.json BondManager.json CanonicalTransactionChain.json ChainStorageContainer-CTC-batches.json ChainStorageContainer-SCC-batches.json ChugSplashDictator.json L1StandardBridge_for_verification_only.json Lib_AddressManager.json OVM_L1CrossDomainMessenger.json Proxy__OVM_L1CrossDomainMessenger.json Proxy__OVM_L1StandardBridge.json README.md StateCommitmentChain.json TeleportrDeposit.json solcInputs 4532a57dbcb505a79ddf510df0371b5f.json 475653b7e5822844bbc8885f604f5e79.json 7531d7762a77038a37e7490a7b4b176f.json 8a22f2b322f61ab13865f2d2a82e5f09.json ad04ab9565e42a9370aa7f055041028d.json e2f1121f17d06f85851dd0c837a00344.json ef3f334bac4d7e77d91b457a0d89ab0a.json f20d616c1af6713a0e8ca9fae9d7bae7.json docs Address.md AddressAliasHelper.md AddressDictator.md AddressUpgradeable.md BondManager.md CanonicalTransactionChain.md ChainStorageContainer.md ChugSplashDictator.md Context.md ContextUpgradeable.md CrossDomainEnabled.md ERC165Checker.md ERC20.md FailingReceiver.md IBondManager.md ICanonicalTransactionChain.md IChainStorageContainer.md ICrossDomainMessenger.md IERC165.md IERC20.md IERC20Metadata.md IL1CrossDomainMessenger.md IL1ERC20Bridge.md IL1StandardBridge.md IL2CrossDomainMessenger.md IL2ERC20Bridge.md IL2StandardERC20.md IStateCommitmentChain.md Initializable.md L1ChugSplashProxy.md L1CrossDomainMessenger.md L1StandardBridge.md L2CrossDomainMessenger.md L2StandardBridge.md L2StandardERC20.md L2StandardTokenFactory.md Lib_AddressManager.md Lib_AddressResolver.md Lib_Buffer.md Lib_Bytes32Utils.md Lib_BytesUtils.md Lib_CrossDomainUtils.md Lib_DefaultValues.md Lib_MerkleTree.md Lib_MerkleTrie.md Lib_OVMCodec.md Lib_PredeployAddresses.md Lib_RLPReader.md Lib_RLPWriter.md Lib_ResolvedDelegateProxy.md Lib_SecureMerkleTrie.md OVM_DeployerWhitelist.md OVM_ETH.md OVM_GasPriceOracle.md OVM_L2ToL1MessagePasser.md OVM_SequencerFeeVault.md Ownable.md OwnableUpgradeable.md PausableUpgradeable.md ReentrancyGuardUpgradeable.md SafeERC20.md StateCommitmentChain.md WETH9.md iL1ChugSplashDeployer.md iOVM_L1BlockNumber.md iOVM_L2ToL1MessagePasser.md genesis goerli-nightly.json goerli.json hardhat.config.ts package.json scripts generate-artifacts.ts generate-deployed-artifacts.ts generate-markdown.ts legacy-bindings.sh ovm-gas-oracle.sh slither.config.json src address-names.ts contract-defs.ts deploy-config.ts deploy-utils.ts index.ts predeploys.ts validation-utils.ts tasks fetch-batches.ts index.ts inspect.ts set-owner.ts take-dump.ts validate-address-dictator.ts validate-chugsplash-dictator.ts whitelist.ts withdraw-fees.ts test contracts L1 deployment AddressDictator.spec.ts ChugSplashDictator.spec.ts messaging L1CrossDomainMessenger.spec.ts L1StandardBridge.spec.ts deposit.gas.spec.ts rollup CanonicalTransactionChain.gas.spec.ts CanonicalTransactionChain.spec.ts ChainStorageContainer.spec.ts StateCommitmentChain.spec.ts verification BondManager.spec.ts L2 messaging L2CrossDomainMessenger.spec.ts L2StandardBridge.spec.ts L2StandardTokenFactory.spec.ts predeploys OVM_ETH.spec.ts OVM_GasPriceOracle.spec.ts OVM_L2ToL1MessagePasser.spec.ts OVM_SequencerFeeVault.spec.ts WETH9.spec.ts chugsplash L1ChugSplashProxy.spec.ts libraries codec Lib_OVMCodec.spec.ts rlp Lib_RLPReader.spec.ts Lib_RLPWriter.spec.ts standards AddressAliasHelper.spec.ts trie Lib_MerkleTrie.spec.ts Lib_SecureMerkleTrie.spec.ts utils Lib_Buffer.spec.ts Lib_Bytes32Utils.spec.ts Lib_BytesUtils.spec.ts Lib_MerkleTree.spec.ts data index.ts json libraries rlp Lib_RLPReader.test.json Lib_RLPWriter.test.json trie trieanyorder.json trietest.json utils Lib_Bytes32Utils.test.json Lib_BytesUtils.test.json helpers codec bridge.ts index.ts constants.ts dummy batches.ts index.ts index.ts test-runner index.ts json-test-runner.ts trie index.ts trie-test-generator.ts utils deploy.ts eth-time.ts impersonation.ts index.ts setup.ts tsconfig.json core-utils .eslintrc.js .lintstagedrc.yml .prettierrc.js CHANGELOG.md README.md package.json src @types external bufio index.d.ts common basic-types.ts bn.ts hex-strings.ts index.ts misc.ts test-utils.ts external bcfg bcfg-types.ts index.ts ethers fallback-provider.ts index.ts network.ts geth geth-types.ts index.ts index.ts index.ts optimism alias.ts batch-encoding.ts deposit-transaction.ts encoding.ts fees.ts hashing.ts index.ts op-node.ts op-provider.ts rollup-types.ts test common hex-strings.spec.ts misc.spec.ts test-utils.spec.ts optimism alias.spec.ts batch-encoding.spec.ts fees.spec.ts setup.ts tsconfig.json data-transport-layer .eslintrc.js .lintstagedrc.yml .prettierrc.js CHANGELOG.md README.md openapi.yml package.json src config chain-constants.ts index.ts patch-contexts.ts db simple-db.ts transport-db.ts index.ts services l1-ingestion handlers errors.ts sequencer-batch-appended.ts state-batch-appended.ts transaction-enqueued.ts service.ts l2-ingestion handlers errors.ts transaction.ts service.ts main service.ts run.ts server service.ts types api-types.ts database-types.ts event-handler-types.ts index.ts utils contracts.ts eth-tx.ts index.ts validation.ts test config hardhat.config.ts setup.ts unit-tests examples 0x4c6d86eff88ebc2a32b265fb1f50d9265b9c6ee3ecee296e77f73dc80bf14d6f.txt 0x779a91270b473172b732eb0d482ac179ab1f0520b8c34ae94ed6f45846a98495.txt 0xcb255253054ee453bb9e042dee9b3cbba1f56f67d39f0f8d164426c051703e40.txt 0xe172c60a552beed0de63ce562a6eb04e6a912ca8d518fa0e2e3ccb479bc93c59.txt 0xef6157961c59dfde154e728a3f582e84d1a2a9f991ac1aeba30ae57d8824c54d.txt 0xff835143b39c47563bf7a051471d1c4df1bff1d43e6eb9268b63c22c66b1d0fe.txt l1-data.ts l2-data.ts services l1-ingestion handlers sequencer-batch-appended.spec.ts state-batch-appended.spec.ts transaction-enqueued.spec.ts l2-ingestion handlers transaction.spec.ts tsconfig.json fault-detector .eslintrc.js .lintstagedrc.yml .prettierrc.js CHANGELOG.md README.md hardhat.config.ts package.json src helpers.ts index.ts service.ts test helpers.spec.ts setup.ts tsconfig.json hardhat-deploy-config .eslintrc.js .lintstagedrc.yml .prettierrc.js CHANGELOG.md README.md package.json src index.ts plugin.ts type-extensions.ts types.ts tsconfig.json message-relayer .eslintrc.js .lintstagedrc.yml .prettierrc.js CHANGELOG.md README.md hardhat.config.ts package.json src index.ts service.ts tsconfig.json migration-data .eslintrc.js .lintstagedrc.yml .prettierrc.js CHANGELOG.md README.md bin cli.ts package.json src advanced-query.ts tsconfig.json replica-healthcheck .eslintrc.js .lintstagedrc.yml .prettierrc.js CHANGELOG.md README.md package.json src index.ts service.ts tsconfig.json sdk .eslintrc.js .lintstagedrc.yml .prettierrc.js CHANGELOG.md README.md hardhat.config.ts package.json src adapters dai-bridge.ts eth-bridge.ts index.ts standard-bridge.ts cross-chain-messenger.ts index.ts interfaces bridge-adapter.ts index.ts l2-provider.ts types.ts l2-provider.ts utils assert.ts chain-constants.ts coercion.ts contracts.ts index.ts merkle-utils.ts message-utils.ts misc-utils.ts type-utils.ts tasks deposit-erc20.ts deposit-eth.ts finalize-withdrawal.ts index.ts test-next README.md proveMessage.spec.ts test cross-chain-messenger.spec.ts helpers constants.ts index.ts l2-provider.spec.ts setup.ts utils coercion.spec.ts contracts.spec.ts message-utils.spec.ts tsconfig.json proxyd CHANGELOG.md README.md backend.go backend_rate_limiter.go cache.go cache_test.go cmd proxyd main.go config.go consensus_poller.go consensus_tracker.go entrypoint.sh errors.go example.config.toml frontend_rate_limiter.go frontend_rate_limiter_test.go integration_tests batch_timeout_test.go batching_test.go caching_test.go consensus_test.go failover_test.go max_rpc_conns_test.go mock_backend_test.go rate_limit_test.go sender_rate_limit_test.go testdata backend_rate_limit.toml batch_timeout.toml batching.toml caching.toml consensus.toml consensus_responses.yml failover.toml frontend_rate_limit.toml max_rpc_conns.toml out_of_service_interval.toml retries.toml sender_rate_limit.toml testdata.txt whitelist.toml ws.toml util_test.go validation_test.go ws_test.go lvc.go methods.go metrics.go proxyd.go redis.go rpc.go rpc_test.go server.go string_set.go tls.go tools mockserver handler handler.go main.go node1.yml node2.yml specs README.md assets batch-deriv-chain.svg batch-deriv-pipeline.svg components.svg derivation-1.svg derivation-2.svg derivation-3.svg engine.svg fault-proof.svg network-participants-overview.svg propagation.svg sequencer-block-gen.svg sequencer-handling-deposits-and-transactions.svg user-withdrawing-to-l1.svg verifier-executing-fraud-proof.svg batcher.md bond-manager.md bridges.md challenger.md deposits.md derivation.md dispute-game-interface.md dispute-game.md exec-engine.md fault-proof.md glossary.md guaranteed-gas-market.md introduction.md messengers.md meta README.md devnet.md linting.md markdown-style.md versioning.md network-upgrades.md overview.md predeploys.md proposals.md rollup-node-p2p.md rollup-node.md system_config.md withdrawals.md technical-documents postmortems 2022-02-02-inflation-vuln.md 2022-05-31-drop-1.md tsconfig.json

<!-- DOCTOC SKIP --> # Meta Processes This directory describes processes that we use to lint/test the specification. - [Linting](linting.md): how to lint source files. - [Markdown Style Guide](markdown-style.md): how to format and structure Markdown files. - [Devnet introduction](devnet.md): how to run a devnet. # bedrock-devnet This is a utility for running a local Bedrock devnet. It is designed to replace the legacy Bash-based devnet runner as part of a progressive migration away from Bash automation. The easiest way to invoke this script is to run `make devnet-up-deploy` from the root of this repository. Otherwise, to use this script run `python3 main.py --monorepo-dir=<path to the monorepo>`. You may need to set `PYTHONPATH` to this directory if you are invoking the script from somewhere other than `bedrock-devnet`. <!-- DOCTOC SKIP --> # Optimism Bedrock specs This directory contains the plain english specs for Optimism, a minimal optimistic rollup protocol that maintains 1:1 compatibility with Ethereum. ## Specification Contents - [Introduction](introduction.md) - [Overview](overview.md) - [Deposits](deposits.md) - [Withdrawals](withdrawals.md) - [Execution Engine](exec-engine.md) - [L2 Output Root Proposals](proposals.md) - [Rollup Node](rollup-node.md) - [Rollup Node P2p](rollup-node-p2p.md) - [L2 Chain Derivation](derivation.md) - [Network Upgrades](network-upgrades.md) - [System Config](system_config.md) - [Batch Submitter](batcher.md) - [Guaranteed Gas Market](guaranteed-gas-market.md) - [Messengers](messengers.md) - [Bridges](bridges.md) - [Predeploys](predeploys.md) - [Glossary](glossary.md) ### Experimental Specifications of new features in active development. - [Fault Proof](./fault-proof.md) - [Dispute Game](./dispute-game.md) - [Dispute Game Interface](./dispute-game-interface.md) ## Design Goals Our aim is to design a protocol specification that is: - **Fast:** When users send transactions, they get reliable confirmations with low-latency. For example when swapping on Uniswap you should see that your transaction succeed in less than 2 seconds. - **Scalable:** It should be possible to handle an enormous number of transactions per second which will enable the system to charge low fees. V1.0 will enable Optimism to scale up to and even past the gas limit on L1. Later iterations should scale much further. - **Modular:** Our designs will use modularity to reduce complexity and enable parallel contributions. Coming up with good conceptual frameworks & composable atoms of software enables us to build extremely complex software even when any one person cannot hold that much in their brain. - **Minimal:** Rollups should be minimal to best take advantage of the battle-tested infrastructure (like Geth) that already runs Ethereum. An ideal optimistic rollup design should be representable as a *diff* against Ethereum client software. - **Developer Driven:** Our designs will be developer driven to ensure we are actually building something that people want to use. We must constantly engage with the developers who will be using our software to avoid creating a system no one wants to use. - **Clear and Readable:** The specs we write are written to be read. So tight feedback loop with the systems team consuming the spec is also key! - **Secure:** This is self-evident. User’s assets are at stake. Every component of the system must be incredibly secure. - **Decentralizable:** Optimism must be designed to avail itself of the security and censorship-resistant guarantees achieved by a decentralized system. Currently centralized components of the system should have a clear path towards decentralization. Already decentralized components of the system should be protected and preserved. # @eth-optimism/endpoint-monitor The endpoint-monitor runs websocket checks on edge-proxyd endpoints and downstream infra provider endpoints. ## Setup Install go1.18 ```bash make build source .env.example # (or copy to .envrc if using direnv) ./bin/endpoint-monitor ``` # Running a Network Node This project lets you set up a local replica of the Optimistic Ethereum chain (either the main one or the Kovan testnet). [New transactions are submitted either to the sequencer outside of Ethereum or to the Canonical Transaction Chain on L1](https://research.paradigm.xyz/optimism#data-availability-batches). To submit transactions via a replica, set `SEQUENCER_CLIENT_HTTP` to a sequencer URL. ## Architecture You need two components to replicate Optimistic Ethereum: - `data-transport-layer`, which retrieves and indexes blocks from L1. To access L1 you need an Ethereum Layer 1 provider, such as   [Infura](https://infura.io/). - `l2geth`, which provides an Ethereum node where you applications can connect and run API calls. ## Resource requirements The `data-transport-layer` should run with 1 CPU and 256Mb of memory. The `l2geth` process should run with 1 or 2 CPUs and between 4 and 8Gb of memory. With this configuration a synchronization from block 0 to current height is expect to take about 8 hours. ## Software Packages These packages are required to run the replica: 1. [Docker](https://www.docker.com/) 1. [Docker compose](https://docs.docker.com/compose/install/) ## Configuration To configure the project, clone this repository and copy either `default-kovan.env` or `default-mainnet.env` file to `.env`. Review the `SHARED_ENV_PATH` configurations, no changes are required, but depending on the use case, you may need copy these examples to a new directory and make your changes. !! Update DATA_TRANSPORT_LAYER__L1_RPC_ENDPOINT to a valid endpoint !! ### Settings Change any other settings required for your environment | Variable                 | Purpose                                                  | Default | ------------------------ | -------------------------------------------------------- | ----------- | COMPOSE_FILE | The yml files to use with docker-compose | replica.yml:replica-shared.yml | ETH_NETWORK              | Ethereum Layer1 and Layer2 network (mainnet,kovan)       | kovan (change to `mainnet` for the production network) | DATA_TRANSPORT_LAYER__L1_RPC_ENDPOINT | An endpoint for the L1 network, either kovan or mainnet. | DATA_TRANSPORT_LAYER__L2_RPC_ENDPOINT | Optimistic endpoint, such as https://kovan.optimism.io or https://mainnet.optimism.io | REPLICA_HEALTHCHECK__ETH_NETWORK_RPC_PROVIDER | The L2 endpoint to check the replica against | (typically the same as the DATA_TRANSPORT_LAYER__L2_RPC_ENDPOINT) | SEQUENCER_CLIENT_HTTP | The L2 sequencer to forward tx to | (typically the same as the DATA_TRANSPORT_LAYER__L2_RPC_ENDPOINT) | SHARED_ENV_PATH          | Path to a directory containing env files                 | [a directory under ./kustomize/replica/envs](https://github.com/optimisticben/op-replica/tree/main/kustomize/replica/envs) | GCMODE | Whether to run l2geth as an `archive` or `full` node | archive | L2GETH_IMAGE_TAG         | L2geth version                                           | 0.5.8 (see below) | DTL_IMAGE_TAG            | Data transport layer version                             | latest (see below) | HC_IMAGE_TAG | Health check version | latest (see below) | L2GETH_HTTP_PORT         | Port number for the l2geth RPC endpoint                  | 9991 | L2GETH_WS_PORT         | Port number for the l2geth WebSockets endpoint          | 9992 | DTL_PORT | Port number for the DTL endpoint, for troubleshooting | 7878 | GETH_INIT_SCRIPT | The script name to run when initializing l2geth | A file under kustomize/replica/bases/configmaps/ ### Docker Image Versions We recommend using the latest versions of both docker images. Find them as GitHub tags [here](https://github.com/ethereum-optimism/optimism/tags) and as published Docker images linked in the badges: | Package                                                                                                                         | Docker                                                                                                                                                                                                              | | ------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [`@eth-optimism/l2geth`](https://github.com/ethereum-optimism/optimism/tree/master/l2geth)                                      | [](https://hub.docker.com/r/ethereumoptimism/l2geth/tags?page=1&ordering=last_updated)                             | | [`@eth-optimism/data-transport-layer`](https://github.com/ethereum-optimism/optimism/tree/master/packages/data-transport-layer) | [](https://hub.docker.com/r/ethereumoptimism/data-transport-layer/tags?page=1&ordering=last_updated) | | [`@eth-optimism/replica-healthcheck`](https://github.com/ethereum-optimism/optimism/tree/master/packages/replica-healthcheck) | [](https://hub.docker.com/r/ethereumoptimism/replica-healthcheck/tags?page=1&ordering=last_updated) | ## Usage | Action | Command | | - | - | | Start the replica (after which you can access it at `http://localhost:L2GETH_HTTP_PORT` | `docker-compose up -d` | | Get the logs for `l2geth` | `docker-compose logs -f l2geth-replica` | | Get the logs for `data-transport-layer` | `docker-compose logs -f data-transport-layer` | | Stop the replica | `docker-compose down` | ## Sync Check   There is a sync check container. It fails at startup because at that point the replica is not running yet. It exposes metrics on port 3000, which you could pick up with a Prometheus. You can view its status with this command: ```sh docker-compose logs -f replica-healthcheck ``` ## Registration [Register here](https://groups.google.com/a/optimism.io/g/optimism-announce) to get announcements, such as notifications of when you're supposed to update your replica. # @eth-optimism/integration-tests Note that these tests are ran against the legacy system, see `op-e2e` for the bedrock test suite. ## Setup Follow installation + build instructions in the [primary README](../README.md). Then, run: ```bash yarn build ``` ## Running integration tests ### Testing a live network Testing on a live network is a bit more complicated than testing locally. You'll need the following in order to do so: 1. A pre-funded wallet with at least 40 ETH. 2. URLs to an L1 and L2 node. 3. The address of the address manager contract. 4. The chain ID of the L2. Once you have all the necessary info, create a `.env` file like the one in `.env.example` and fill it in with the values above. Then, run: ```bash yarn test:integration:live ``` This will take quite a long time. Kovan, for example, takes about 30 minutes to complete. You can also set environment variables on the command line instead of inside `.env` if you want: ```bash L1_URL=whatever L2_URL=whatever yarn test:integration:live ``` To run the Uniswap integration tests against a deployed set of Uniswap contracts, add the following env vars: ``` UNISWAP_POSITION_MANAGER_ADDRESS=<non fungible position manager address> UNISWAP_ROUTER_ADDRESS=<router address> ``` ## Running actor tests Actor tests use the same environment variables as the integration tests, so set up your `.env` file if you haven't already. Then, run `yarn test:actor <args>` to run the tests. Note that it will be **very expensive** to run the actor tests against mainnet, and that the tests can take a while to complete. See [actor-tests/README.md](actor-tests/README.md) for information on actor tests. libsecp256k1 ============ [](https://travis-ci.org/bitcoin-core/secp256k1) Optimized C library for EC operations on curve secp256k1. This library is a work in progress and is being used to research best practices. Use at your own risk. Features: * secp256k1 ECDSA signing/verification and key generation. * Adding/multiplying private/public keys. * Serialization/parsing of private keys, public keys, signatures. * Constant time, constant memory access signing and pubkey generation. * Derandomized DSA (via RFC6979 or with a caller provided function.) * Very efficient implementation. Implementation details ---------------------- * General * No runtime heap allocation. * Extensive testing infrastructure. * Structured to facilitate review and analysis. * Intended to be portable to any system with a C89 compiler and uint64_t support. * Expose only higher level interfaces to minimize the API surface and improve application security. ("Be difficult to use insecurely.") * Field operations * Optimized implementation of arithmetic modulo the curve's field size (2^256 - 0x1000003D1). * Using 5 52-bit limbs (including hand-optimized assembly for x86_64, by Diederik Huys). * Using 10 26-bit limbs. * Field inverses and square roots using a sliding window over blocks of 1s (by Peter Dettman). * Scalar operations * Optimized implementation without data-dependent branches of arithmetic modulo the curve's order. * Using 4 64-bit limbs (relying on __int128 support in the compiler). * Using 8 32-bit limbs. * Group operations * Point addition formula specifically simplified for the curve equation (y^2 = x^3 + 7). * Use addition between points in Jacobian and affine coordinates where possible. * Use a unified addition/doubling formula where necessary to avoid data-dependent branches. * Point/x comparison without a field inversion by comparison in the Jacobian coordinate space. * Point multiplication for verification (a*P + b*G). * Use wNAF notation for point multiplicands. * Use a much larger window for multiples of G, using precomputed multiples. * Use Shamir's trick to do the multiplication with the public key and the generator simultaneously. * Optionally (off by default) use secp256k1's efficiently-computable endomorphism to split the P multiplicand into 2 half-sized ones. * Point multiplication for signing * Use a precomputed table of multiples of powers of 16 multiplied with the generator, so general multiplication becomes a series of additions. * Access the table with branch-free conditional moves so memory access is uniform. * No data-dependent branches * The precomputed tables add and eventually subtract points for which no known scalar (private key) is known, preventing even an attacker with control over the private key used to control the data internally. Build steps ----------- libsecp256k1 is built using autotools: $ ./autogen.sh $ ./configure $ make $ ./tests $ sudo make install # optional --- title: Security FAQs lang: en-US --- ::: warning 🚧 Work in Progress The OP Stack is a work in progress. Constantly pushing to improve the overall security and decentralization of the OP Stack is a top priority. ::: ## Security in the decentralized context The OP Stack is a decentralized development stack that powers Optimism. Components of the OP Stack may be maintained by various different teams within the Optimism Collective. It is generally easier to talk about the security model of specific chains built on the OP Stack rather than the security model of the stack itself. **The OP Stack security baseline is to create safe defaults while still giving developers the flexibility to make modifications and extend the stack.** ## FAQ ### Is every OP Stack chain safe? The security model of an OP Stack based blockchain depends on the modules used for its components. Because of the flexibility provided by OP Stack, it is always possible to set up an insecure blockchain using OP Stack components. **The goal of the OP Stack is to provide safe defaults.** Please also keep in mind that just like any other system, **the OP Stack may contain unknown bugs** that could lead to the loss of some or all of the assets held within an OP Stack based system. [Many components of the OP Stack codebase have been audited](https://github.com/ethereum-optimism/optimism/tree/develop/technical-documents/security-reviews) but **audits are not a stamp of approval** and **a completed audit does not mean that the audited codebase is free of bugs.** It’s important to understand that using the OP Stack inherently exposes you to the risk of bugs within the OP Stack codebase. ### Is the OP Stack safe to modify? As with anything, modify the OP Stack at your own risk. There is no guarantee that modifications to the stack will be safe. If you aren’t entirely sure about what you’re doing, stick with the safer defaults that the OP Stack provides. At the moment, the OP Stack is not particularly amenable to modifications and **you should not expect any technical support for modifications that fall outside of the standard Rollup configuration of the stack**. ### Can I use fault proofs? **Not yet.** The OP Stack does not currently have a fault proof system. **Note that fault proofs do not meaningfully improve the security of a system if that system can be upgraded within the 7 day challenge window (”fast upgrade keys”)**. A system with fast upgrade keys is fully dependent on the upgrade keys for security. Fault proofs are a key milestone and top priority for the OP Stack. In the meantime, the OP Stack can be shipped with several other excellent security options for systems that want to improve security before fault proofs are available in production. ### How can I help make the OP Stack more secure? One of the easiest ways to help secure the OP Stack is to look for bugs and vulnerabilities. [Optimism Mainnet, a user of the OP Stack, has one of the biggest bug bounties (ever)](https://immunefi.com/bounty/optimism/). You can earn up to $2,000,042 by finding critical bugs in the Optimism Mainnet codebase (and by extension the OP Stack). Don’t forget that the OP Stack is a decentralized development stack. Anyone can start to contribute to the OP Stack by building software that follows [the stack’s design principles](../understand/design-principles.md). You can always help make the OP Stack more secure by building components, like alternative client or proof implementations, that users of the OP Stack can take advantage of. ### Where do I report bugs? [View the Security Policy for details about reporting vulnerabilities and available bug bounty programs](./policy.md) go-metrics-influxdb =================== This is a reporter for the [go-metrics](https://github.com/rcrowley/go-metrics) library which will post the metrics to [InfluxDB](https://influxdb.com/). Note ---- This is only compatible with InfluxDB 0.9+. Usage ----- ```go import "github.com/vrischmann/go-metrics-influxdb" go influxdb.InfluxDB( metrics.DefaultRegistry, // metrics registry time.Second * 10, // interval "http://localhost:8086", // the InfluxDB url "mydb", // your InfluxDB database "myuser", // your InfluxDB user "mypassword", // your InfluxDB password ) ``` License ------- go-metrics-influxdb is licensed under the MIT license. See the LICENSE file for details. # Invariant Docs This directory contains documentation for all defined invariant tests within `contracts-bedrock`. <!-- Do not modify the following section manually. It will be automatically generated on running `yarn autogen:invariant-docs` --> <!-- START autoTOC --> ## Table of Contents - [AddressAliasing](./AddressAliasing.md) - [Burn](./Burn.md) - [CrossDomainMessenger](./CrossDomainMessenger.md) - [Encoding](./Encoding.md) - [Hashing](./Hashing.md) - [L2OutputOracle](./L2OutputOracle.md) - [OptimismPortal](./OptimismPortal.md) - [ResourceMetering](./ResourceMetering.md) - [SafeCall](./SafeCall.md) - [SystemConfig](./SystemConfig.md) <!-- END autoTOC --> ## Usage To auto-generate documentation for invariant tests, run `yarn autogen:invariant-docs`. ## Documentation Standard In order for an invariant test file to be picked up by the [docgen script](../scripts/invariant-doc-gen.ts), it must adhere to the following conventions: ### Forge Invariants All `forge` invariant tests must exist within the `contracts/test/invariants` folder, and the file name should be `<ContractName>.t.sol`, where `<ContractName>` is the name of the contract that is being tested. All tests within `forge` invariant files should follow the convention: ```solidity /** * @custom:invariant <title> * * <longDescription> */ function invariant_<shortDescription>() external { // ... } ``` ### Echidna Invariants All `echidna` invariant tests must exist within the `contracts/echidna` folder, and the file name should be `Fuzz<ContractName>.sol`, where `<ContractName>` is the name of the contract that is being tested. All property tests within `echidna` invariant files should follow the convention: ```solidity /** * @custom:invariant <title> * * <longDescription> */ function echidna_<shortDescription>() external view returns (bool) { // ... } ``` # Assets ## preview.gif A gif preview of using the cli ## preview.tape The script to record the preview.gif with [vhs](https://github.com/charmbracelet/vhs) To execute: 1. [Download vhs](https://github.com/charmbracelet/vhs) 2. Install the local version of atst ```bash npm uninstall @eth-optimism/atst -g && npm i . -g && atst --version ``` 3. Start anvil ```bash anvil --fork-url https://mainnet.optimism.io ``` 4. Record tape vhs < assets/preview.tape ```bash vhs < assets/preview.tape ``` 5. The tape will be outputted to `assets/preview.gif` # @eth-optimism/migration-data This package is a temporary space for scripts and tools being built to collect data for the upcoming Bedrock upgrade migration! We will not be publishing this package publicly as it is not meant for end-user consumption. # @eth-optimism/hardhat-deploy-config `hardhat-deploy-config` is a simple plugin that adds support for global deploy configuration values. ## Installation ``` yarn add @eth-optimism/hardhat-deploy-config ``` # @eth-optimism/replica-healthcheck [](https://codecov.io/gh/ethereum-optimism/optimism) ## What is this? `replica-healthcheck` is an express server to be run alongside a replica instance, to ensure that the replica is healthy. Currently, it exposes metrics on syncing stats and exits when the replica has a mismatched state root against the sequencer. ## Installation Clone, install, and build the Optimism monorepo: ``` git clone https://github.com/ethereum-optimism/optimism.git yarn install yarn build ``` ## Running the service (manual) Copy `.env.example` into a new file named `.env`, then set the environment variables listed there. You can view a list of all environment variables and descriptions for each via: ``` yarn start --help ``` Once your environment variables have been set, run the relayer via: ``` yarn start ``` --- title: Release History lang: en-US --- The OP Stack codebase is a decentralized development stack maintained by the Optimism Collective and built to power Optimism. The OP Stack is constantly evolving as new layers and modules are developed. The OP Stack codebase is also not a product (in the traditional sense) but rather a collection of software components that power the Optimism ecosystem. **A “Release” of the OP Stack codebase is a particular set of software components that are production-ready and which fit the stack’s design principles and goals.** Only the software components included within the Current Release of the OP Stack codebase are considered in the scope of the OP Stack. Any usage of the OP Stack outside of the official, intended capabilities of the Current Release are considered [OP Stack Hacks](../build/hacks.md) — unofficial modifications that are useful for experimentation but could have unforeseen results, such as security vulnerabilities, and are likely cause your chain to no longer be interoperable with [the Optimism Superchain](https://app.optimism.io/superchain/). **Developer support for OP Stack Hacks is limited — when in doubt, stick to the capabilities of the Current Release!** ## Current Release [OP Stack codebase V1: Bedrock](./bedrock/) ## Past Releases N/A # @eth-optimism/common-ts [](https://codecov.io/gh/ethereum-optimism/optimism) ## What is this? `@eth-optimism/common-ts` contains useful tools for logging, metrics, and other Node stuff. # Kustomize kubernetes deployments [Kustomize](https://kustomize.io/) is a way to build custom kubernetes manifests in a template-free way. This directory describes how to build and deploy Optimistic Ethereum software to a kubernetes cluster. ## Prerequisits - `kubectl` **Minimum version v1.20** [Install notes](https://kubernetes.io/docs/tasks/tools/install-kubectl-linux/#install-kubectl-on-linux) - a kubernetes cluster ## Structure The kustomization starts from a folder in `./bases`. Directories under `bases` should describe components in their most generic form. It is possible to deploy directly from a `bases` directory if no resource modification is needed. The other folders are "overlays", or configuration that will modify resources defined in `bases`. ## Kustomizing with a new overlay Kustomize build resources based on `kustomization.yaml` files. To create a new overlay, create a new directory with a new `kustomization.yaml` file that refers to the base resources to target. Add any global modifers, the base resources to target and any modifications. **A valid base target is any directory with a `kustomization.yaml` file**. See a detailed description of a kovan replica [here](./README-kovan-replica.md) ## Building `kustomize` can be run in 2 different way, with the built in `kubectl` flag or using the stand alone binary. **The binary should be used for this repository** as the `kubectl` releases are lagging on the `envs` feature. Using kubectl with the `-k` flag and a target directory will build and diff or apply the generated manifests. ``` kubectl diff -k ./bases/configmaps/ kubectl apply -k ./bases/configmaps/ ``` Using a `kustomize` binary release, we simplay build the manifests and pipe them to `kubectl` on STDIN. ``` kustomize build ./bases/configmaps/ | kubectl diff -f - kustomize build ./bases/configmaps/ | kubectl apply -f - ``` ## Example deployment See [./README-kovan-replica-deploy.md](README-kovan-replica-deploy.md) # Using the smartcard wallet ## Requirements * A USB smartcard reader * A keycard that supports the status app * PCSCD version 4.3 running on your system **Only version 4.3 is currently supported** ## Preparing the smartcard **WARNING: FOILLOWING THESE INSTRUCTIONS WILL DESTROY THE MASTER KEY ON YOUR CARD. ONLY PROCEED IF NO FUNDS ARE ASSOCIATED WITH THESE ACCOUNTS** You can use status' [keycard-cli](https://github.com/status-im/keycard-cli) and you should get _at least_ version 2.1.1 of their [smartcard application](https://github.com/status-im/status-keycard/releases/download/2.2.1/keycard_v2.2.1.cap) You also need to make sure that the PCSC daemon is running on your system. Then, you can install the application to the card by typing: ``` keycard install -a keycard_v2.2.1.cap && keycard init ``` At the end of this process, you will be provided with a PIN, a PUK and a pairing password. Write them down, you'll need them shortly. Start `geth` with the `console` command. You will notice the following warning: ``` WARN [04-09|16:58:38.898] Failed to open wallet url=keycard://044def09 err="smartcard: pairing password needed" ``` Write down the URL (`keycard://044def09` in this example). Then ask `geth` to open the wallet: ``` > personal.openWallet("keycard://044def09") Please enter the pairing password: ``` Enter the pairing password that you have received during card initialization. Same with the PIN that you will subsequently be asked for. If everything goes well, you should see your new account when typing `personal` on the console: ``` > personal WARN [04-09|17:02:07.330] Smartcard wallet account derivation failed url=keycard://044def09 err="Unexpected response status Cla=0x80, Ins=0xd1, Sw=0x6985" { listAccounts: [], listWallets: [{ status: "Empty, waiting for initialization", url: "keycard://044def09" }], ... } ``` So the communication with the card is working, but there is no key associated with this wallet. Let's create it: ``` > personal.initializeWallet("keycard://044def09") "tilt ... impact" ``` You should get a list of words, this is your seed so write them down. Your wallet should now be initialized: ``` > personal.listWallets [{ accounts: [{ address: "0x678b7cd55c61917defb23546a41803c5bfefbc7a", url: "keycard://044d/m/44'/60'/0'/0/0" }], status: "Online", url: "keycard://044def09" }] ``` You're all set! ## Usage 1. Start `geth` with the `console` command 2. Check the card's URL by checking `personal.listWallets`: ``` listWallets: [{ status: "Online, can derive public keys", url: "keycard://a4d73015" }] ``` 3. Open the wallet, you will be prompted for your pairing password, then PIN: ``` personal.openWallet("keycard://a4d73015") ``` 4. Check that creation was successful by typing e.g. `personal`. Then use it like a regular wallet. ## Known issues * Starting geth with a valid card seems to make firefox crash. * PCSC version 4.4 should work, but is currently untested --- title: Welcome to the OP Stack lang: en-US --- **The OP Stack is the standardized, shared, and open-source development stack that powers Optimism, maintained by the Optimism Collective.** ::: tip Staying up to date [Stay up to date on the Superchain and the OP Stack by subscribing to the Optimism newsletter](https://optimism.us6.list-manage.com/subscribe/post?u=9727fa8bec4011400e57cafcb&id=ca91042234&f_id=002a19e3f0). ::: The OP Stack consists of the many different software components managed and maintained by the Optimism Collective that, together, form the backbone of Optimism. The OP Stack is built as a public good for the Ethereum and Optimism ecosystems. ## The OP Stack powers Optimism The OP Stack is the set of software that powers Optimism — currently in the form of the software behind Optimism Mainnet and eventually in the form of the Optimism Superchain and its governance. With the advent of the Superchain concept, it has become increasingly important for Optimism to easily support the secure creation of new chains that can interoperate within the proposed Superchain ecosystem. As a result, the OP Stack is primarily focused around the creation of a shared, high-quality, and fully open-source system for creating new L2 blockchains. By coordinating on shared standards, the Optimism Collective can avoid rebuilding the same software in silos repeatedly. Although the OP Stack today significantly simplifies the process of creating L2 blockchains, it’s important to note that this does not fundamentally define what the OP Stack **is**. The OP Stack is *all* of the software that powers Optimism. As Optimism evolves, so will the OP Stack. **The OP Stack can be thought of as software components that either help define a specific layer of the Optimism ecosystem or fill a role as a module within an existing layer.** Although the current heart of the OP Stack is infrastructure for running L2 blockchains, the OP Stack theoretically extends to layers on top of the underlying blockchain including tools like block explorers, message passing mechanisms, governance systems, and more. Layers are generally more tightly defined towards the bottom of the stack (like the Data Availability Layer) but become more loosely defined towards the top of the stack (like the Governance Layer). ## The OP Stack today Optimism Bedrock is the current iteration of the OP Stack. The Bedrock release provides the tools for launching a production-quality Optimistic Rollup blockchain. At this point in time, the APIs for the different layers of the OP Stack are still tightly coupled to this Rollup configuration of the stack. If you'd like to learn more about the current state of the OP Stack, check out [the page describing the Bedrock release](/docs/releases/bedrock/README.md). The OP Stack of today was built to support [the Optimism Superchain](./docs/understand/explainer.md), a proposed network of L2s that share security, communication layers, and a common development stack (the OP Stack itself). The Bedrock release of the OP Stack makes it easy to spin up an L2 that will be compatible with the Superchain when it launches. If you'd like to launch a Superchain-ready L2, check out our guide for running a chain based on the Bedrock release of the OP Stack. It is possible to modify components of the OP Stack to build novel L2 systems. If you're interested in experimenting with the OP Stack, check out [the OP Stack Hacks section of this site](/docs/build/hacks.md). Please note that, as of the Bedrock release, the OP Stack is *not* designed to support these modifications and you will very much be *hacking* on the codebase. As a result, **you should, for the moment, expect limited (if any) developer support for OP Stack Hacks.** OP Stack Hacks will likely make your chain incompatible with the Optimism Superchain. Have fun, but at your own risk and **stick to the Bedrock release if you're looking to join the Superchain!** ## The OP Stack tomorrow The OP Stack is an evolving concept. As Optimism grows, so will the OP Stack. Today, the Bedrock Release of the OP Stack simplifies the process of deploying new L2 Rollups. As work on the stack continues, it should become easier to plug in and configure different modules. As the Superchain (link) begins to take shape, the OP Stack can evolve alongside it, to include the message-passing infrastructure that allows different chains to interoperate seamlessly. At the end of the day, the OP Stack becomes what Optimism needs. ## Dive Deeper into the OP Stack Ready to dive into the world of the OP Stack? - If you’re interested in learning more about the current release of the OP Stack, check out the Bedrock Release page. - If you’re interested in understanding the OP Stack in more depth, start with the [Design Principles](/docs/understand/design-principles.md) and [Landscape Overview](/docs/understand/landscape.md). - If you're excited to join the Superchain, launch your first Superchain-ready L2 with our [Getting Started guide](/docs/build/getting-started.md) or dive directly into the OP Stack codebase to learn more. The OP Stack is the next frontier for Ethereum. You’re already here, so what are you waiting for? <div align="center"> <br /> <br /> <a href="https://optimism.io"><img alt="Optimism" src="https://raw.githubusercontent.com/ethereum-optimism/brand-kit/main/assets/svg/OPTIMISM-R.svg" width=600></a> <h3><a href="https://optimism.io">Optimism</a> is a low-cost and lightning-fast Ethereum L2 blockchain, built with the OP Stack.</h3> <br /> <h3>+</h3> <a href="https://near.org"><img alt="NEAR Protocol" src="docs/op-stack/src/assets/docs/understand/near-logo.svg" width=600></a> <h3> <a href="https://near.org">NEAR</a> is a low-cost, usable, and scalable layer-one blockchain that offers cheap data availability layer.</h3> <br /> </div> ## NEAR DA + OP Stack tutorial If you're looking to run the OP Stack + NEAR DA setup for this repository, please visit the [NEAR DA guides](https://docs.near.org/data-availability/welcome) to get started. ## What are Optimism and the OP Stack? Optimism is a low-cost and lightning-fast Ethereum L2 blockchain, **but it's also so much more than that**. The OP Stack powers Optimism, an Ethereum L2 blockchain, and forms the technical foundation for the [the Optimism Collective](https://app.optimism.io/announcement)—a group committed to the **impact=profit** principle. This principle rewards individuals for their positive contributions to the collective. Optimism addresses critical coordination failures in the crypto ecosystem, such as funding public goods and infrastructure. The OP Stack focuses on creating a shared, open-source system for developing new L2 blockchains within the proposed Superchain ecosystem, promoting collaboration and preventing redundant efforts. As Optimism evolves, the OP Stack will adapt, encompassing components ranging from blockchain infrastructure to governance systems. This software suite aims to simplify L2 blockchain creation while supporting the growth and development of the Optimism ecosystem. ## What is NEAR? NEAR is a decentralized application platform designed to improve scalability and user experience in blockchain technology. Utilizing a proof-of-stake consensus mechanism, it focuses on energy efficiency and high transaction throughput. NEAR’s standout feature is sharding, which breaks the network into smaller segments for parallel processing, greatly enhancing speed and capacity. This approach makes NEAR particularly appealing for developers building decentralized applications and for users seeking fast, low-cost transactions, and also for data availability for Ethereum rollups. ## Documentation If you want to learn more about the OP Stack, check out the documentation at [stack.optimism.io](https://stack.optimism.io/). If you want to learn more about the NEAR Data Availability and also NEAR, check out the documentation at [near.org](https://near.org/) ## Community ### Optimism General discussion happens most frequently on the [Optimism Discord](https://discord.gg/optimism). Governance discussion can also be found on the [Optimism Governance Forum](https://gov.optimism.io/). ### NEAR General discussion happens most frequently on the [NEAR discord](https://discord.com/invite/zfhfRpaM4m). Other discussions can be found on the [NEAR Governance Forum](https://gov.near.org/). <!-- ## Contributing Read through [CONTRIBUTING.md](./CONTRIBUTING.md) for a general overview of our contribution process. Use the [Developer Quick Start](./CONTRIBUTING.md#development-quick-start) to get your development environment set up to start working on the Optimism Monorepo. Then check out our list of [good first issues](https://github.com/ethereum-optimism/optimism/contribute) to find something fun to work on! --> ## e2e testing This repository has updated end-to-end tests in the `op-e2e` package to work with NEAR DA as the data availability (DA) layer. Currently, the tests assume a working [Celestia devnet](https://github.com/rollkit/local-celestia-devnet) running locally: ```bash docker run --platform linux/amd64 -p 26658:26658 ghcr.io/rollkit/local-celestia-devnet:v0.11.0-rc8 ``` The e2e tests can be triggered with: ```bash cd $HOME/optimism cd op-e2e make test ``` ## Bridging If you have the OP Stack + NEAR DA setup running, you can test out bridging from the L1 to the L2. To do this, first navigate to the `packages/contracts-bedrock` directory and create a `.env` file with the following contents: ```bash L1_PROVIDER_URL=http://localhost:8545 L2_PROVIDER_URL=http://localhost:9545 PRIVATE_KEY=bf7604d9d3a1c7748642b1b7b05c2bd219c9faa91458b370f85e5a40f3b03af7 ``` Then, run the following from the same directory: ```bash npx hardhat deposit --network devnetL1 --l1-provider-url http://localhost:8545 --l2-provider-url http://localhost:9545 --amount-eth <AMOUNT> --to <ADDRESS> ``` ## Directory Structure <pre> ~~ Production ~~ ├── <a href="./packages">packages</a> │ ├── <a href="./packages/common-ts">common-ts</a>: Common tools for building apps in TypeScript │ ├── <a href="./packages/contracts">contracts</a>: L1 and L2 smart contracts for Optimism │ ├── <a href="./packages/contracts-periphery">contracts-periphery</a>: Peripheral contracts for Optimism │ ├── <a href="./packages/core-utils">core-utils</a>: Low-level utilities that make building Optimism easier │ ├── <a href="./packages/data-transport-layer">data-transport-layer</a>: Service for indexing Optimism-related L1 data │ ├── <a href="./packages/chain-mon">chain-mon</a>: Chain monitoring services │ ├── <a href="./packages/fault-detector">fault-detector</a>: Service for detecting Sequencer faults │ ├── <a href="./packages/message-relayer">message-relayer</a>: Tool for automatically relaying L1<>L2 messages in development │ ├── <a href="./packages/replica-healthcheck">replica-healthcheck</a>: Service for monitoring the health of a replica node │ └── <a href="./packages/sdk">sdk</a>: provides a set of tools for interacting with Optimism ├── <a href="./batch-submitter">batch-submitter</a>: Service for submitting batches of transactions and results to L1 ├── <a href="./bss-core">bss-core</a>: Core batch-submitter logic and utilities ├── <a href="./gas-oracle">gas-oracle</a>: Service for updating L1 gas prices on L2 ├── <a href="./indexer">indexer</a>: indexes and syncs transactions ├── <a href="./infra/op-replica">infra/op-replica</a>: Deployment examples and resources for running an Optimism replica ├── <a href="./integration-tests">integration-tests</a>: Various integration tests for the Optimism network ├── <a href="./l2geth">l2geth</a>: Optimism client software, a fork of <a href="https://github.com/ethereum/go-ethereum/tree/v1.9.10">geth v1.9.10</a> (deprecated for BEDROCK upgrade) ├── <a href="./l2geth-exporter">l2geth-exporter</a>: A prometheus exporter to collect/serve metrics from an L2 geth node ├── <a href="./op-exporter">op-exporter</a>: A prometheus exporter to collect/serve metrics from an Optimism node ├── <a href="./proxyd">proxyd</a>: Configurable RPC request router and proxy ├── <a href="./technical-documents">technical-documents</a>: audits and post-mortem documents ~~ BEDROCK upgrade - Not production-ready yet, part of next major upgrade ~~ ├── <a href="./packages">packages</a> │ └── <a href="./packages/contracts-bedrock">contracts-bedrock</a>: Bedrock smart contracts. To be merged with ./packages/contracts. ├── <a href="./op-bindings">op-bindings</a>: Go bindings for Bedrock smart contracts. ├── <a href="./op-batcher">op-batcher</a>: L2-Batch Submitter, submits bundles of batches to L1 ├── <a href="./op-e2e">op-e2e</a>: End-to-End testing of all bedrock components in Go ├── <a href="./op-node">op-node</a>: rollup consensus-layer client. ├── <a href="./op-proposer">op-proposer</a>: L2-Output Submitter, submits proposals to L1 ├── <a href="./ops-bedrock">ops-bedrock</a>: Bedrock devnet work └── <a href="./specs">specs</a>: Specs of the rollup starting at the Bedrock upgrade </pre> <!-- ## Branching Model ### Active Branches | Branch | Status | | --------------- | -------------------------------------------------------------------------------- | | [master](https://github.com/ethereum-optimism/optimism/tree/master/) | Accepts PRs from `develop` when we intend to deploy to mainnet. | | [develop](https://github.com/ethereum-optimism/optimism/tree/develop/) | Accepts PRs that are compatible with `master` OR from `release/X.X.X` branches. | | release/X.X.X | Accepts PRs for all changes, particularly those not backwards compatible with `develop` and `master`. | ### Overview We generally follow [this Git branching model](https://nvie.com/posts/a-successful-git-branching-model/). Please read the linked post if you're planning to make frequent PRs into this repository (e.g., people working at/with Optimism). ### Production branch Our production branch is `master`. The `master` branch contains the code for our latest "stable" releases. Updates from `master` **always** come from the `develop` branch. We only ever update the `master` branch when we intend to deploy code within the `develop` to the Optimism mainnet. Our update process takes the form of a PR merging the `develop` branch into the `master` branch. ### Development branch Our primary development branch is [`develop`](https://github.com/ethereum-optimism/optimism/tree/develop/). `develop` contains the most up-to-date software that remains backwards compatible with our latest experimental [network deployments](https://community.optimism.io/docs/useful-tools/networks/). If you're making a backwards compatible change, please direct your pull request towards `develop`. **Changes to contracts within `packages/contracts/contracts` are usually NOT considered backwards compatible and SHOULD be made against a release candidate branch**. Some exceptions to this rule exist for cases in which we absolutely must deploy some new contract after a release candidate branch has already been fully deployed. If you're changing or adding a contract and you're unsure about which branch to make a PR into, default to using the latest release candidate branch. See below for info about release candidate branches. ### Release candidate branches Branches marked `release/X.X.X` are **release candidate branches**. Changes that are not backwards compatible and all changes to contracts within `packages/contracts/contracts` MUST be directed towards a release candidate branch. Release candidates are merged into `develop` and then into `master` once they've been fully deployed. We may sometimes have more than one active `release/X.X.X` branch if we're in the middle of a deployment. See table in the **Active Branches** section above to find the right branch to target. ## Releases ### Changesets We use [changesets](https://github.com/changesets/changesets) to mark packages for new releases. When merging commits to the `develop` branch you MUST include a changeset file if your change would require that a new version of a package be released. To add a changeset, run the command `yarn changeset` in the root of this monorepo. You will be presented with a small prompt to select the packages to be released, the scope of the release (major, minor, or patch), and the reason for the release. Comments within changeset files will be automatically included in the changelog of the package. ### Triggering Releases Releases can be triggered using the following process: 1. Create a PR that merges the `develop` branch into the `master` branch. 2. Wait for the auto-generated `Version Packages` PR to be opened (may take several minutes). 3. Change the base branch of the auto-generated `Version Packages` PR from `master` to `develop` and merge into `develop`. 4. Create a second PR to merge the `develop` branch into the `master` branch. After merging the second PR into the `master` branch, packages will be automatically released to their respective locations according to the set of changeset files in the `develop` branch at the start of the process. Please carry this process out exactly as listed to avoid `develop` and `master` falling out of sync. **NOTE**: PRs containing changeset files merged into `develop` during the release process can cause issues with changesets that can require manual intervention to fix. It's strongly recommended to avoid merging PRs into develop during an active release. ## License Code forked from [`go-ethereum`](https://github.com/ethereum/go-ethereum) under the name [`l2geth`](https://github.com/ethereum-optimism/optimism/tree/master/l2geth) is licensed under the [GNU GPLv3](https://gist.github.com/kn9ts/cbe95340d29fc1aaeaa5dd5c059d2e60) in accordance with the [original license](https://github.com/ethereum/go-ethereum/blob/master/COPYING). All other files within this repository are licensed under the [MIT License](https://github.com/ethereum-optimism/optimism/blob/master/LICENSE) unless stated otherwise. --> # rpc-proxy This tool implements `proxyd`, an RPC request router and proxy. It does the following things: 1. Whitelists RPC methods. 2. Routes RPC methods to groups of backend services. 3. Automatically retries failed backend requests. 4. Provides metrics the measure request latency, error rates, and the like. ## Usage Run `make proxyd` to build the binary. No additional dependencies are necessary. To configure `proxyd` for use, you'll need to create a configuration file to define your proxy backends and routing rules. Check out [example.config.toml](./example.config.toml) for how to do this alongside a full list of all options with commentary. Once you have a config file, start the daemon via `proxyd <path-to-config>.toml`. ## Metrics See `metrics.go` for a list of all available metrics. The metrics port is configurable via the `metrics.port` and `metrics.host` keys in the config. ## Adding Backend SSL Certificates in Docker The Docker image runs on Alpine Linux. If you get SSL errors when connecting to a backend within Docker, you may need to add additional certificates to Alpine's certificate store. To do this, bind mount the certificate bundle into a file in `/usr/local/share/ca-certificates`. The `entrypoint.sh` script will then update the store with whatever is in the `ca-certificates` directory prior to starting `proxyd`. # op-chain-ops This package performs state surgery. It takes the following input: 1. A v0 database 2. A partial `genesis.json` 3. A list of addresses that transacted on the network prior to this past regenesis. 4. A list of addresses that performed approvals on prior versions of the OVM ETH contract. It creates an initialized Bedrock Geth database as output. It does this by performing the following steps: 1. Iterates over the old state. 2. For each account in the old state, add that account and its storage to the new state after copying its balance from the OVM_ETH contract. 3. Iterates over the pre-allocated accounts in the genesis file and adds them to the new state. 4. Imports any accounts that have OVM ETH balances but aren't in state. 5. Configures a genesis block in the new state using `genesis.json`. It performs the following integrity checks: 1. OVM ETH storage slots must be completely accounted for. 2. The total supply of OVM ETH migrated must match the total supply of the OVM ETH contract. This process takes about two hours on mainnet. Unlike previous iterations of our state surgery scripts, this one does not write results to a `genesis.json` file. This is for the following reasons: 1. **Performance**. It's much faster to write binary to LevelDB than it is to write strings to a JSON file. 2. **State Size**. There are nearly 1MM accounts on mainnet, which would create a genesis file several gigabytes in size. This is impossible for Geth to import without a large amount of memory, since the entire JSON gets buffered into memory. Importing the entire state database will be much faster, and can be done with fewer resources. ## Compilation Run `make op-migrate`. # Optimism Smart Contracts [](https://codecov.io/gh/ethereum-optimism/optimism) `@eth-optimism/contracts` contains the various Solidity smart contracts used within the Optimism system. Some of these contracts are [meant to be deployed to Ethereum ("Layer 1")](https://github.com/ethereum-optimism/optimism/tree/develop/packages/contracts/contracts/L1), while others are [meant to be deployed to Optimism ("Layer 2")](https://github.com/ethereum-optimism/optimism/tree/develop/packages/contracts/contracts/L2). Within each contract file you'll find the network upon which the contract is meant to be deloyed, listed as either `EVM` (for Ethereum) or `OVM` (for Optimism). If neither `EVM` nor `OVM` are listed, the contract is likely intended to be used on either network. ## Usage (npm) You can import `@eth-optimism/contracts` to use the Optimism contracts within your own codebase. Install via `npm` or `yarn`: ```shell npm install @eth-optimism/contracts ``` Within your contracts: ```solidity import { SomeContract } from "@eth-optimism/contracts/path/to/SomeContract.sol"; ``` Note that the `/path/to/SomeContract.sol` is the path to the target contract within the [contracts folder](https://github.com/ethereum-optimism/optimism/tree/develop/packages/contracts/contracts) inside of this package. For example, the [L1CrossDomainMessenger](https://github.com/ethereum-optimism/optimism/blob/develop/packages/contracts/contracts/L1/messaging/L1CrossDomainMessenger.sol) contract is located at `packages/contracts/contracts/L1/messaging/L1CrossDomainMessenger.sol`, relative to this README. You would therefore import the contract as: ```solidity import { L1CrossDomainMessenger } from "@eth-optimism/contracts/L1/messaging/L1CrossDomainMessenger.sol"; ``` ## Guide for Developers ### Setup Install the following: - [`Node.js` (14+)](https://nodejs.org/en/) - [`npm`](https://www.npmjs.com/get-npm) - [`yarn`](https://classic.yarnpkg.com/en/docs/install/) Clone the repo: ```shell git clone https://github.com/ethereum-optimism/contracts.git cd contracts ``` Install `npm` packages: ```shell yarn install ``` ### Running Tests Tests are executed via `yarn`: ```shell yarn test ``` Run specific tests by giving a path to the file you want to run: ```shell yarn test ./test/path/to/my/test.spec.ts ``` ### Measuring test coverage: ```shell yarn test:coverage ``` The output is most easily viewable by opening the html file in your browser: ```shell open ./coverage/index.html ``` ### Compiling and Building Compile and build the various required with the `build` command: ```shell yarn build ``` ### Deploying the Contracts #### Required environment variables You must set several required environment variables before you can execute a deployment. Duplicate the file [`.env.example`](./.env.example) and rename your duplicate to `.env`. Fill out each of the environment variables before continuing. #### Creating a deployment configuration Before you can carry out a deployment, you must create a deployment configuration file inside of the [deploy-config](./deploy-config/) folder. Deployment configuration files are TypeScript files that export an object that conforms to the `DeployConfig` type. See [mainnet.ts](./deploy-config/mainnet.ts) for an example deployment configuration. We recommend duplicating an existing deployment config and modifying it to satisfy your requirements. #### Executing a deployment Once you've created your deploy config, you can execute a deployment with the following command: ``` npx hardhat deploy --network <my network name> ``` Note that this only applies to fresh deployments. If you want to upgrade an existing system (instead of deploying a new system from scratch), you must use the following command instead: ``` npx hardhat deploy --network <my network name> --tags upgrade ``` During the deployment process, you will be asked to transfer ownership of several contracts to a special contract address. You will also be asked to verify various configuration values. This is a safety mechanism to make sure that actions within an upgrade are performed atomically. Ownership of these addresses will be automatically returned to the original owner address once the upgrade is complete. The original owner can always recover ownership from the upgrade contract in an emergency. Please read these instructions carefully, verify each of the presented configuration values, and carefully confirm that the contract you are giving ownership to has not been compromised (e.g., check the code on Etherscan). After your deployment is complete, your new contracts will be written to an artifacts directory in `./deployments/<my network name>`. #### Verifying contract source code Contracts will be automatically verified via both [Etherscan](https://etherscan.io) and [Sourcify](https://sourcify.dev/) during the deployment process. If there was an issue with verification during the deployment, you can manually verify your contracts with the command: ``` npx hardhat etherscan-verify --network <my network name> ``` #### Creating a genesis file Optimism expects that certain contracts (called "predeploys") be deployed to the L2 network at pre-determined addresses. We guarantee this by creating a genesis file in which certain contracts are already within the L2 state at the genesis block. To create the genesis file for your network, you must first deploy the L1 contracts using the appropriate commands from above. Once you've deployed your contracts, run the following command: ``` npx hardhat take-dump --network <my network name> ``` A genesis file will be created for you at `/genesis/<my network name>.json`. You can then ingest this file via `geth init`. ### Hardhat tasks #### Whitelisting Optimism has removed the whitelist from the Optimism mainnet. However, if you are running your own network and still wish to use the whitelist, you can manage the whitelist with the `whitelist` task. Run the following to get help text for the `whitelist` command: ``` npx hardhat whitelist --help ``` #### Withdrawing fees Any wallet can trigger a withdrawal of fees within the `SequencerFeeWallet` contract on L2 back to L1 as long as a threshold balance has been reached. Fees within the wallet will return to a fixed address on L1. Run the following to get help text for the `withdraw-fees` command: ``` npx hardhat withdraw-fees --help ``` ## Security Please refer to our [Security Policy](https://github.com/ethereum-optimism/.github/security/policy) for information about how to disclose security issues with this code. We also maintain a [bug bounty program via Immunefi](https://immunefi.com/bounty/optimism/) with a maximum payout of $2,000,042 for critical bug reports. # op-node This is the reference implementation of the [rollup-node spec](../specs/rollup-node.md). ## Compiling Compile a binary: ```shell cd op-node go build -o bin/op-node ./cmd ``` ## Testing Run op-node unit tests: ```shell cd op-node go test ./... ``` Run end-to-end tests: ```shell cd op-e2e go test ./... ``` ## Running Options can be reviewed with: ```shell ./bin/op-node --help ``` To start syncing the rollup: Connect to at least one L1 RPC and L2 execution engine: - L1: use any L1 node / RPC (websocket connection path may differ) - L2: run the Optimism fork of geth: [`op-geth`](https://github.com/ethereum-optimism/op-geth) ```shell # websockets or IPC preferred for event notifications to improve sync, http RPC works with adaptive polling. op \ --l1=ws://localhost:8546 --l2=ws//localhost:9001 \ --rollup.config=./path-to-network-config/rollup.json \ --rpc.addr=127.0.0.1 \ --rpc.port=7000 ``` ## Devnet Genesis Generation The `op-node` can generate geth compatible `genesis.json` files. These files can be used with `geth init` to initialize the `StateDB` with accounts, storage, code and balances. The L2 state must be initialized with predeploy contracts that exist in the state and act as system level contracts. The `op-node` can generate a genesis file with these predeploys configured correctly given hardhat compilation artifacts, hardhat deployment artifacts, a L1 RPC URL and a deployment config. The hardhat compilation artifacts are produced by `hardhat compile`. The native hardhat compiler toolchain produces them by default and the `@foundry-rs/hardhat` plugin can also produce them when using the foundry compiler toolchain. They can usually be found in an `artifacts` directory. The hardhat deployment artifacts are produced by running `hardhat deploy`. These exist to make it easy to track deployments of smart contract systems over time. They can usually be found in a `deployments` directory. The deployment config contains all of the information required to deploy the system. It can be found in `packages/contracts-bedrock/deploy-config`. Each deploy config file can be JSON or TypeScript, although only JSON files are supported by the `op-node`. The network name must match the name of the file in the deploy config directory. Example usage: ```bash $ op-node genesis devnet-l2 \ --artifacts $CONTRACTS_BEDROCK/artifacts \ --network $NETWORK \ --deployments $CONTRACTS_BEDROCK/deployments \ --deploy-config $CONTRACTS_BEDROCK/deploy-config \ --rpc-url http://localhost:8545 \ ``` # Optimism Goerli (public testnet) ## Network Info - **Chain ID**: 420 - **Public RPC**: https://goerli.optimism.io - **Block Explorer**: https://goerli-optimism.etherscan.io/ **Note:** This list is out of date, now that Goerli is on bedrock. [The valid list is here](https://github.com/ethereum-optimism/optimism/tree/develop/packages/contracts-bedrock/deployments/goerli). ## Layer 1 Contracts <table> <tr> <th> <img width="506px" height="0px" /> <p><small>Contract</small></p> </th> <th> <img width="506px" height="0px" /> <p><small>Address</small></p> </th> </tr> <tr> <td> BondManager </td> <td align="center"> <a href="https://goerli.etherscan.io/address/0xfC2ab6987C578218f99E85d61Dcf4814A26637Bd"> <code>0xfC2ab6987C578218f99E85d61Dcf4814A26637Bd</code> </a> </td> </tr> <tr> <td> CanonicalTransactionChain </td> <td align="center"> <a href="https://goerli.etherscan.io/address/0x607F755149cFEB3a14E1Dc3A4E2450Cde7dfb04D"> <code>0x607F755149cFEB3a14E1Dc3A4E2450Cde7dfb04D</code> </a> </td> </tr> <tr> <td> ChainStorageContainer-CTC-batches </td> <td align="center"> <a href="https://goerli.etherscan.io/address/0x4325Ac17c7fF5Afc0d05335dD30Db3D010455813"> <code>0x4325Ac17c7fF5Afc0d05335dD30Db3D010455813</code> </a> </td> </tr> <tr> <td> ChainStorageContainer-SCC-batches </td> <td align="center"> <a href="https://goerli.etherscan.io/address/0x41eF5DaF4A7719bfe89A88BA3DD0DCFF5feCeD39"> <code>0x41eF5DaF4A7719bfe89A88BA3DD0DCFF5feCeD39</code> </a> </td> </tr> <tr> <td> Lib_AddressManager </td> <td align="center"> <a href="https://goerli.etherscan.io/address/0xa6f73589243a6A7a9023b1Fa0651b1d89c177111"> <code>0xa6f73589243a6A7a9023b1Fa0651b1d89c177111</code> </a> </td> </tr> <tr> <td> Proxy__OVM_L1CrossDomainMessenger </td> <td align="center"> <a href="https://goerli.etherscan.io/address/0x5086d1eEF304eb5284A0f6720f79403b4e9bE294"> <code>0x5086d1eEF304eb5284A0f6720f79403b4e9bE294</code> </a> </td> </tr> <tr> <td> Proxy__OVM_L1StandardBridge </td> <td align="center"> <a href="https://goerli.etherscan.io/address/0x636Af16bf2f682dD3109e60102b8E1A089FedAa8"> <code>0x636Af16bf2f682dD3109e60102b8E1A089FedAa8</code> </a> </td> </tr> <tr> <td> StateCommitmentChain </td> <td align="center"> <a href="https://goerli.etherscan.io/address/0x9c945aC97Baf48cB784AbBB61399beB71aF7A378"> <code>0x9c945aC97Baf48cB784AbBB61399beB71aF7A378</code> </a> </td> </tr> </table> ## Layer 2 Contracts <table> <tr> <th> <img width="506px" height="0px" /> <p><small>Contract</small></p> </th> <th> <img width="506px" height="0px" /> <p><small>Address</small></p> </th> </tr> <tr> <td> OVM_L2ToL1MessagePasser </td> <td align="center"> <a href="https://goerli-optimism.etherscan.io//address/0x4200000000000000000000000000000000000000"> <code>0x4200000000000000000000000000000000000000</code> </a> </td> </tr> <tr> <td> OVM_DeployerWhitelist </td> <td align="center"> <a href="https://goerli-optimism.etherscan.io//address/0x4200000000000000000000000000000000000002"> <code>0x4200000000000000000000000000000000000002</code> </a> </td> </tr> <tr> <td> L2CrossDomainMessenger </td> <td align="center"> <a href="https://goerli-optimism.etherscan.io//address/0x4200000000000000000000000000000000000007"> <code>0x4200000000000000000000000000000000000007</code> </a> </td> </tr> <tr> <td> OVM_GasPriceOracle </td> <td align="center"> <a href="https://goerli-optimism.etherscan.io//address/0x420000000000000000000000000000000000000F"> <code>0x420000000000000000000000000000000000000F</code> </a> </td> </tr> <tr> <td> L2StandardBridge </td> <td align="center"> <a href="https://goerli-optimism.etherscan.io//address/0x4200000000000000000000000000000000000010"> <code>0x4200000000000000000000000000000000000010</code> </a> </td> </tr> <tr> <td> OVM_SequencerFeeVault </td> <td align="center"> <a href="https://goerli-optimism.etherscan.io//address/0x4200000000000000000000000000000000000011"> <code>0x4200000000000000000000000000000000000011</code> </a> </td> </tr> <tr> <td> L2StandardTokenFactory </td> <td align="center"> <a href="https://goerli-optimism.etherscan.io//address/0x4200000000000000000000000000000000000012"> <code>0x4200000000000000000000000000000000000012</code> </a> </td> </tr> <tr> <td> OVM_L1BlockNumber </td> <td align="center"> <a href="https://goerli-optimism.etherscan.io//address/0x4200000000000000000000000000000000000013"> <code>0x4200000000000000000000000000000000000013</code> </a> </td> </tr> <tr> <td> OVM_ETH </td> <td align="center"> <a href="https://goerli-optimism.etherscan.io//address/0xDeadDeAddeAddEAddeadDEaDDEAdDeaDDeAD0000"> <code>0xDeadDeAddeAddEAddeadDEaDDEAdDeaDDeAD0000</code> </a> </td> </tr> <tr> <td> WETH9 </td> <td align="center"> <a href="https://goerli-optimism.etherscan.io//address/0x4200000000000000000000000000000000000006"> <code>0x4200000000000000000000000000000000000006</code> </a> </td> </tr> </table> # devp2p Simulations The `p2p/simulations` package implements a simulation framework which supports creating a collection of devp2p nodes, connecting them together to form a simulation network, performing simulation actions in that network and then extracting useful information. ## Nodes Each node in a simulation network runs multiple services by wrapping a collection of objects which implement the `node.Service` interface meaning they: * can be started and stopped * run p2p protocols * expose RPC APIs This means that any object which implements the `node.Service` interface can be used to run a node in the simulation. ## Services Before running a simulation, a set of service initializers must be registered which can then be used to run nodes in the network. A service initializer is a function with the following signature: ```go func(ctx *adapters.ServiceContext) (node.Service, error) ``` These initializers should be registered by calling the `adapters.RegisterServices` function in an `init()` hook: ```go func init() { adapters.RegisterServices(adapters.Services{ "service1": initService1, "service2": initService2, }) } ``` ## Node Adapters The simulation framework includes multiple "node adapters" which are responsible for creating an environment in which a node runs. ### SimAdapter The `SimAdapter` runs nodes in-memory, connecting them using an in-memory, synchronous `net.Pipe` and connecting to their RPC server using an in-memory `rpc.Client`. ### ExecAdapter The `ExecAdapter` runs nodes as child processes of the running simulation. It does this by executing the binary which is running the simulation but setting `argv[0]` (i.e. the program name) to `p2p-node` which is then detected by an init hook in the child process which runs the `node.Service` using the devp2p node stack rather than executing `main()`. The nodes listen for devp2p connections and WebSocket RPC clients on random localhost ports. ## Network A simulation network is created with an ID and default service (which is used if a node is created without an explicit service), exposes methods for creating, starting, stopping, connecting and disconnecting nodes, and emits events when certain actions occur. ### Events A simulation network emits the following events: * node event - when nodes are created / started / stopped * connection event - when nodes are connected / disconnected * message event - when a protocol message is sent between two nodes The events have a "control" flag which when set indicates that the event is the outcome of a controlled simulation action (e.g. creating a node or explicitly connecting two nodes together). This is in contrast to a non-control event, otherwise called a "live" event, which is the outcome of something happening in the network as a result of a control event (e.g. a node actually started up or a connection was actually established between two nodes). Live events are detected by the simulation network by subscribing to node peer events via RPC when the nodes start up. ## Testing Framework The `Simulation` type can be used in tests to perform actions in a simulation network and then wait for expectations to be met. With a running simulation network, the `Simulation.Run` method can be called with a `Step` which has the following fields: * `Action` - a function which performs some action in the network * `Expect` - an expectation function which returns whether or not a given node meets the expectation * `Trigger` - a channel which receives node IDs which then trigger a check of the expectation function to be performed against that node As a concrete example, consider a simulated network of Ethereum nodes. An `Action` could be the sending of a transaction, `Expect` it being included in a block, and `Trigger` a check for every block that is mined. On return, the `Simulation.Run` method returns a `StepResult` which can be used to determine if all nodes met the expectation, how long it took them to meet the expectation and what network events were emitted during the step run. ## HTTP API The simulation framework includes a HTTP API which can be used to control the simulation. The API is initialised with a particular node adapter and has the following endpoints: ``` GET / Get network information POST /start Start all nodes in the network POST /stop Stop all nodes in the network GET /events Stream network events GET /snapshot Take a network snapshot POST /snapshot Load a network snapshot POST /nodes Create a node GET /nodes Get all nodes in the network GET /nodes/:nodeid Get node information POST /nodes/:nodeid/start Start a node POST /nodes/:nodeid/stop Stop a node POST /nodes/:nodeid/conn/:peerid Connect two nodes DELETE /nodes/:nodeid/conn/:peerid Disconnect two nodes GET /nodes/:nodeid/rpc Make RPC requests to a node via WebSocket ``` For convenience, `nodeid` in the URL can be the name of a node rather than its ID. ## Command line client `p2psim` is a command line client for the HTTP API, located in `cmd/p2psim`. It provides the following commands: ``` p2psim show p2psim events [--current] [--filter=FILTER] p2psim snapshot p2psim load p2psim node create [--name=NAME] [--services=SERVICES] [--key=KEY] p2psim node list p2psim node show <node> p2psim node start <node> p2psim node stop <node> p2psim node connect <node> <peer> p2psim node disconnect <node> <peer> p2psim node rpc <node> <method> [<args>] [--subscribe] ``` ## Example See [p2p/simulations/examples/README.md](examples/README.md). # src Source code for atst ## index.ts Entrypoint for sdk ## cli.ts Entrypoint for the cli ## __snapshots__ Vitest snapshots for the vitest tests ## commands CLI implementations of atst read and write ## constants Internal and external constants ## contracts The attestation station contract ## lib All library code for the sdk lives here ## test Test helpers ## types Zod and typscript types ## Fuzzers To run a fuzzer locally, you need [go-fuzz](https://github.com/dvyukov/go-fuzz) installed. First build a fuzzing-binary out of the selected package: ``` (cd ./rlp && CGO_ENABLED=0 go-fuzz-build .) ``` That command should generate a `rlp-fuzz.zip` in the `rlp/` directory. If you are already in that directory, you can do ``` [user@work rlp]$ go-fuzz 2019/11/26 13:36:54 workers: 6, corpus: 3 (3s ago), crashers: 0, restarts: 1/0, execs: 0 (0/sec), cover: 0, uptime: 3s 2019/11/26 13:36:57 workers: 6, corpus: 3 (6s ago), crashers: 0, restarts: 1/0, execs: 0 (0/sec), cover: 1054, uptime: 6s 2019/11/26 13:37:00 workers: 6, corpus: 3 (9s ago), crashers: 0, restarts: 1/8358, execs: 25074 (2786/sec), cover: 1054, uptime: 9s 2019/11/26 13:37:03 workers: 6, corpus: 3 (12s ago), crashers: 0, restarts: 1/8497, execs: 50986 (4249/sec), cover: 1054, uptime: 12s 2019/11/26 13:37:06 workers: 6, corpus: 3 (15s ago), crashers: 0, restarts: 1/9330, execs: 74640 (4976/sec), cover: 1054, uptime: 15s 2019/11/26 13:37:09 workers: 6, corpus: 3 (18s ago), crashers: 0, restarts: 1/9948, execs: 99482 (5527/sec), cover: 1054, uptime: 18s 2019/11/26 13:37:12 workers: 6, corpus: 3 (21s ago), crashers: 0, restarts: 1/9428, execs: 122568 (5836/sec), cover: 1054, uptime: 21s 2019/11/26 13:37:15 workers: 6, corpus: 3 (24s ago), crashers: 0, restarts: 1/9676, execs: 145152 (6048/sec), cover: 1054, uptime: 24s 2019/11/26 13:37:18 workers: 6, corpus: 3 (27s ago), crashers: 0, restarts: 1/9855, execs: 167538 (6205/sec), cover: 1054, uptime: 27s 2019/11/26 13:37:21 workers: 6, corpus: 3 (30s ago), crashers: 0, restarts: 1/9645, execs: 192901 (6430/sec), cover: 1054, uptime: 30s 2019/11/26 13:37:24 workers: 6, corpus: 3 (33s ago), crashers: 0, restarts: 1/9967, execs: 219294 (6645/sec), cover: 1054, uptime: 33s ``` Otherwise: ``` go-fuzz -bin ./rlp/rlp-fuzz.zip ``` ### Notes Once a 'crasher' is found, the fuzzer tries to avoid reporting the same vector twice, so stores the fault in the `suppressions` folder. Thus, if you e.g. make changes to fix a bug, you should _remove_ all data from the `suppressions`-folder, to verify that the issue is indeed resolved. Also, if you have only one and the same exit-point for multiple different types of test, the suppression can make the fuzzer hide differnent types of errors. So make sure that each type of failure is unique (for an example, see the rlp fuzzer, where a counter `i` is used to differentiate between failures: ```golang if !bytes.Equal(input, output) { panic(fmt.Sprintf("case %d: encode-decode is not equal, \ninput : %x\noutput: %x", i, input, output)) } ``` # Optimism Peripheral Smart Contracts [](https://codecov.io/gh/ethereum-optimism/optimism) # @eth-optimism/message-relayer [](https://codecov.io/gh/ethereum-optimism/optimism) `message-relayer` is a service that automatically finalizes ("relays") messages sent from Optimism to Ethereum. This package is meant to be used during local development and should NOT be used on a production network. ## Installation Clone, install, and build the Optimism monorepo: ``` git clone https://github.com/ethereum-optimism/optimism.git yarn install yarn build ``` ## Running the relayer (Docker) The `message-relayer` can be included as part of the [local Optimism development environment](https://community.optimism.io/docs/developers/build/dev-node/). Although the `message-relayer` is not turned on by default, it can be enabled by [changing this line in docker-compose.yml](https://github.com/ethereum-optimism/optimism/blob/51a527b8e3fe69940fb8c0f5e4aa2e0ae8ee294c/ops/docker-compose.yml#L129) to: ``` replicas: 1 ``` ## Running the relayer (manual) The `message-relayer` can also be run manually. Copy `.env.example` into a new file named `.env`, then set the environment variables listed there. Once your environment variables have been set, run the relayer via: ``` yarn start ``` # @eth-optimism/data-transport-layer [](https://codecov.io/gh/ethereum-optimism/optimism) ## What is this? The Optimism Data Transport Layer is a long-running software service (written in TypeScript) designed to reliably index Optimism transaction data from Layer 1 (Ethereum). Specifically, this service indexes: * Transactions that have been enqueued for submission to the CanonicalTransactionChain via [`CanonicalTransactionChain.enqueue`]. * Transactions that have been included in the CanonicalTransactionChain via [`CanonicalTransactionChain.appendQueueBatch`] or [`CanonicalTransactionChain.appendSequencerBatch`]. * State roots (transaction results) that have been published to the StateCommitmentChain via [`StateCommitmentChain.appendStateBatch`]. ## How does it work? We run two sub-services, the [`L1IngestionService`](./src/services/l1-ingestion/service.ts) and the [`L1TransportServer`](./src/services/server/service.ts). The `L1IngestionService` is responsible for querying for the various events and transaction data necessary to accurately index information from our Layer 1 (Ethereum) smart contracts. The `L1TransportServer` simply provides an API for accessing this information. ## Getting started ### Configuration See an example config at [.env.example](.env.example); copy into a `.env` file before running. `L1_TRANSPORT__L1_RPC_ENDPOINT` can be the JSON RPC endpoint of any L1 Ethereum node. `L1_TRANSPORT__ADDRESS_MANAGER` should be the contract addresss of the Address Manager on the corresponding network; find their values in the [contracts package](https://github.com/ethereum-optimism/optimism/tree/develop/packages/contracts/deployments). ### Building and usage After cloning and switching to the repository, install dependencies: ```bash $ yarn ``` Use the following commands to build, use, test, and lint: ```bash $ yarn build $ yarn start $ yarn test $ yarn lint ``` ## Configuration We're using `dotenv` for our configuration. Copy `.env.example` into `.env`, feel free to modify it. Here's the list of environment variables you can change: | Variable | Default | Description | | ------------------------------------------------------- | ----------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------- | | DATA_TRANSPORT_LAYER__DB_PATH | ./db | Path to the database for this service. | | DATA_TRANSPORT_LAYER__ADDRESS_MANAGER | - | Address of the AddressManager contract on L1. See [contracts](https://github.com/ethereum-optimism/optimism/tree/develop/packages/contracts/deployments) package to find this address for mainnet or kovan. | | DATA_TRANSPORT_LAYER__POLLING_INTERVAL | 5000 | Period of time between execution loops. | | DATA_TRANSPORT_LAYER__DANGEROUSLY_CATCH_ALL_ERRORS | false | If true, will catch all errors without throwing. | | DATA_TRANSPORT_LAYER__CONFIRMATIONS | 12 | Number of confirmations to wait before accepting transactions as "canonical". | | DATA_TRANSPORT_LAYER__SERVER_HOSTNAME | localhost | Host to run the API on. | | DATA_TRANSPORT_LAYER__SERVER_PORT | 7878 | Port to run the API on. | | DATA_TRANSPORT_LAYER__SYNC_FROM_L1 | true | Whether or not to sync from L1. | | DATA_TRANSPORT_LAYER__L1_RPC_ENDPOINT | - | RPC endpoint for an L1 node. | | DATA_TRANSPORT_LAYER__L1_RPC_USER | - | Basic Authentication user for the L1 node endpoint. | | DATA_TRANSPORT_LAYER__L1_RPC_PASSWORD | - | Basic Authentication password for the L1 node endpoint. | | DATA_TRANSPORT_LAYER__LOGS_PER_POLLING_INTERVAL | 2000 | Logs to sync per polling interval. | | DATA_TRANSPORT_LAYER__SYNC_FROM_L2 | false | Whether or not to sync from L2. | | DATA_TRANSPORT_LAYER__L2_RPC_ENDPOINT | - | RPC endpoint for an L2 node. | | DATA_TRANSPORT_LAYER__L2_RPC_USER | - | Basic Authentication user for the L2 node endpoint. | | DATA_TRANSPORT_LAYER__L2_RPC_PASSWORD | - | Basic Authentication password for the L2 node endpoint. | | DATA_TRANSPORT_LAYER__TRANSACTIONS_PER_POLLING_INTERVAL | 1000 | Number of L2 transactions to query per polling interval. | | DATA_TRANSPORT_LAYER__L2_CHAIN_ID | - | L2 chain ID. | | DATA_TRANSPORT_LAYER__LEGACY_SEQUENCER_COMPATIBILITY | false | Whether or not to enable "legacy" sequencer sync (without the custom `eth_getBlockRange` endpoint) | | DATA_TRANSPORT_LAYER__NODE_ENV | development | Environment the service is running in: production, development, or test. | | DATA_TRANSPORT_LAYER__ETH_NETWORK_NAME | - | L1 Ethereum network the service is deployed to: mainnet, kovan, goerli. | | DATA_TRANSPORT_LAYER__L1_GAS_PRICE_BACKEND | l1 | Where to pull the l1 gas price from (l1 or l2) | | DATA_TRANSPORT_LAYER__DEFAULT_BACKEND | l1 | Where to sync transactions from (l1 or l2) | To enable proper error tracking via Sentry on deployed instances, make sure `NODE_ENV` and `ETH_NETWORK_NAME` are set in addition to [`SENTRY_DSN`](https://docs.sentry.io/platforms/node/). ## HTTP API This section describes the HTTP API for accessing indexed Layer 1 data. ### Latest Ethereum Block Context #### Request ``` GET /eth/context/latest ``` #### Response ```ts { "blockNumber": number, "timestamp": number } ``` ### Latest Ethereum L1 Gas Price #### Request ``` GET /eth/gasprice ``` Defaults to pulling L1 gas price from config option `DATA_TRANSPORT_LAYER__L1_GAS_PRICE_BACKEND`. Can be overridden with query parameter `backend` (`/eth/gasprice?backend=l1`). #### Response ```ts { "gasPrice": string } ``` ### Enqueue by Index #### Request ``` GET /enqueue/index/{index: number} ``` #### Response ```ts { "index": number, "target": string, "data": string, "gasLimit": number, "origin": string, "blockNumber": number, "timestamp": number } ``` ### Transaction by Index #### Request ``` GET /transaction/index/{index: number} ``` #### Response ```ts { "transaction": { "index": number, "batchIndex": number, "data": string, "blockNumber": number, "timestamp": number, "gasLimit": number, "target": string, "origin": string, "queueOrigin": string, "type": string | null, "decoded": { "sig": { "r": string, "s": string, "v": string }, "gasLimit": number, "gasPrice": number, "nonce": number, "target": string, "data": string } | null, "queueIndex": number | null, }, "batch": { "index": number, "blockNumber": number, "timestamp": number, "submitter": string, "size": number, "root": string, "prevTotalElements": number, "extraData": string } } ``` ### Transaction Batch by Index #### Request ``` GET /batch/transaction/index/{index: number} ``` #### Response ```ts { "batch": { "index": number, "blockNumber": number, "timestamp": number, "submitter": string, "size": number, "root": string, "prevTotalElements": number, "extraData": string }, "transactions": [ { "index": number, "batchIndex": number, "data": string, "blockNumber": number, "timestamp": number, "gasLimit": number, "target": string, "origin": string, "queueOrigin": string, "type": string | null, "decoded": { "sig": { "r": string, "s": string, "v": string }, "gasLimit": number, "gasPrice": number, "nonce": number, "target": string, "data": string } | null, "queueIndex": number | null, } ] } ``` ### State Root by Index #### Request ``` GET /stateroot/index/{index: number} ``` #### Response ```ts { "stateRoot": { "index": number, "batchIndex": number, "value": string }, "batch": { "index": number, "blockNumber": number, "timestamp": number, "submitter": string, "size": number, "root": string, "prevTotalElements": number, "extraData": string }, } ``` ### State Root Batch by Index #### Request ``` GET /batch/stateroot/index/{index: number} ``` #### Response ```ts { "batch": { "index": number, "blockNumber": number, "timestamp": number, "submitter": string, "size": number, "root": string, "prevTotalElements": number, "extraData": string }, "stateRoots": [ { "index": number, "batchIndex": number, "value": string } ] } ``` # docker-compose The docker-compose project runs a local optimism stack. ## prerequisites - docker - docker-compose - make ## Building the services ```bash make build ``` ## Starting and stopping the project The base `docker-compose.yml` file will start the required components for a full stack. Supplementing the base configuration is an additional metric enabling file, `docker-compose-metrics.yml`. Adding this configuration to the stack will enable metric emission for l2geth and start grafana (for metrics visualisation) and influxdb (for metric collection) instances. Also available for testing is the `rpc-proxy` service in the `docker-compose-rpc-proxy.yml` file. It can be used to restrict what RPC methods are allowed to the Sequencer. The base stack can be started and stopped with a command like this: ``` docker-compose \ -f docker-compose.yml \ up --build --detach ``` *Note*: This generates a large amount of log data which docker stores by default. See [Disk Usage](#disk-usage). Also note that Docker Desktop only allocates 2GB of memory by default, which isn't enough to run the docker-compose services reliably. To allocate more memory, go to Settings > Resources in the Docker UI and use the slider to change the value (_8GB recommended_). Make sure to click Apply & Restart for the changes to take effect. To start the stack with monitoring enabled, just add the metric composition file. ``` docker-compose \ -f docker-compose.yml \ -f docker-compose-metrics.yml \ up --build --detach ``` Optionally, run a verifier along the rest of the stack. Run a replica with the same command by switching the service name! ``` docker-compose -f docker-compose.yml \ up --scale \ verifier=1 \ --build --detach ``` A Makefile has been provided for convience. The following targets are available. - make up - make down - make up-metrics - make down-metrics ## Turning off L2 Fee Enforcement Fees can be turned off at runtime by setting the environment variable `ROLLUP_ENFORCE_FEES` to `false`. ```bash ROLLUP_ENFORCE_FEES=false docker-compose up ``` ## Cross domain communication By default, the `message-relayer` service is turned off. This means that any tests must manually submit withdrawals. The `message-relayer` will automatically look for withdrawals and submit the proofs. To run with the `message-relayer` on, use the command: ```bash $ docker-compose up --scale relayer=1 ``` ## Authentication Influxdb has authentication disabled. Grafana requires a login. The defaults are: ``` user: admin password: optimism ``` ## Data persistance Grafana data is not currently saved. Any modifications or additions will be lost on container restart. InfluxDB is persisting data to a Docker volume. **Stopping the project removing the containers will not clear this volume** To remove the influxdb and grafana data, run a commands like ``` docker volume rm ops_influxdb_data docker volume rm ops_grafana_data ``` ## Accessing Grafana dashboards After starting up the project Grafana should be listening on http://localhost:3000. Access this link and authenticate as `admin` (see #Authentication) From the Dashboard list, select "Geth dashboard". ## Disk Usage The logs generated are in the gigabytes per day range, so you need to be wary of disk exhaustion when running for long periods. One way to solve this is to configure `/etc/docker/daemon.json` like this: ```json { "log-driver": "json-file", "log-opts": { "max-size": "10m", "max-file": "3" } } ``` This configures log rotation with a limit of 10MB per file and storing a maximum of three files (per container). [More details on docker logging configuration](https://docs.docker.com/config/containers/logging/configure/). You can also decrease logging by increasing polling intervals: ```env DATA_TRANSPORT_LAYER__POLLING_INTERVAL=100 ``` - [./envs/dtl.env#L7](./envs/dtl.env#L7) ```env ROLLUP_POLL_INTERVAL_FLAG=500ms ``` - [./envs/geth.env#L8](./envs/geth.env#L8) # `ctb-test-case-generator` A lightweight input fuzzing utility used for testing various Bedrock contracts. <pre> ├── test-case-generator │ ├── <a href="./cmd">cmd</a>: `ctb-test-case-genertor`'s binary │ └── <a href="./trie">trie</a>: Utility for generating random merkle trie roots / inclusion proofs </pre> ## Usage To build, run `yarn build:fuzz` from this directory or the `contract-bedrock` package. To generate an abi-encoded fuzz case, pass in a mode via the `-m` flag as well as an optional variant via the `-v` flag. ### Available Modes #### `trie` > **Note** > Variant required for `trie` mode. | Variant | Description | | ----------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------- | | `valid` | Generate a test case with a valid proof of inclusion for the k/v pair in the trie. | | `extra_proof_elems` | Generate an invalid test case with an extra proof element attached to an otherwise valid proof of inclusion for the passed k/v. | | `corrupted_proof` | Generate an invalid test case where the proof is malformed. | | `invalid_data_remainder` | Generate an invalid test case where a random element of the proof has more bytes than the length designates within the RLP list encoding. | | `invalid_large_internal_hash` | Generate an invalid test case where a long proof element is incorrect for the root. | | `invalid_internal_node_hash` | Generate an invalid test case where a small proof element is incorrect for the root. | | `prefixed_valid_key` | Generate a valid test case with a key that has been given a random prefix | | `empty_key` | Generate a valid test case with a proof of inclusion for an empty key. | | `partial_proof` | Generate an invalid test case with a partially correct proof | --- title: OP Stack Docs lang: en-US --- [Click here](..) ## Go Ethereum Official Golang implementation of the Ethereum protocol. [](https://godoc.org/github.com/ethereum/go-ethereum) [](https://goreportcard.com/report/github.com/ethereum/go-ethereum) [](https://travis-ci.org/ethereum/go-ethereum) [](https://discord.gg/nthXNEv) ## Optimism The same codebase is used to run both the Sequencer and the Verifier. Runtime configuration will determine the mode of operation. The configuration flags can be configured using either environment variables or passed at runtime as flags. A prebuilt Docker image is available at `ethereumoptimism/l2geth`. To compile the code, run: ``` $ make geth ``` ### Running a Sequencer Running a sequencer that ingests L1 to L2 transactions requires running the [Data Transport Layer](https://github.com/ethereum-optimism/optimism/tree/develop/packages/data-transport-layer). The data transport layer is responsible for indexing transactions from layer one Ethereum. It is possible to run a local development sequencer without the data transport layer by turning off the sync service. To turn on the sync service, use the config flag `--eth1.syncservice` or `ETH1_SYNC_SERVICE_ENABLE`. The URL of the data transport layer should be used for the sequencer config option `--rollup.clienthttp`. The `scripts` directory contains some scripts that make it easy to run a local sequencer for development purposes. First, the genesis block must be initialized. This is because there are predeployed contracts in the L2 state. The scripts to generate the genesis block can be found in the `contracts` package. Be sure to run those first. ```bash $ ./scripts/init.sh ``` This script can be ran with the `DEVELOPMENT` env var set which will add a prefunded account to the genesis state that can be used for development. The `start.sh` script is used to start `geth`. It hardcodes a bunch of common config values for when running `geth`. ```bash $ ./scripts/start.sh ``` This script can be modified to work with `dlv` by prefixing the `$cmd` with `dlv exec` and being sure to prefix the `geth` arguments with `--` so they are interpreted as arguments to `geth` instead of `dlv`. ### Running a Verifier Add the flag `--rollup.verifier` ## Building the source For prerequisites and detailed build instructions please read the [Installation Instructions](https://github.com/ethereum/go-ethereum/wiki/Building-Ethereum) on the wiki. Building `geth` requires both a Go (version 1.10 or later) and a C compiler. You can install them using your favourite package manager. Once the dependencies are installed, run ```shell make geth ``` or, to build the full suite of utilities: ```shell make all ``` ## Executables The go-ethereum project comes with several wrappers/executables found in the `cmd` directory. | Command | Description | | :-----------: | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **`geth`** | Our main Ethereum CLI client. It is the entry point into the Ethereum network (main-, test- or private net), capable of running as a full node (default), archive node (retaining all historical state) or a light node (retrieving data live). It can be used by other processes as a gateway into the Ethereum network via JSON RPC endpoints exposed on top of HTTP, WebSocket and/or IPC transports. `geth --help` and the [CLI Wiki page](https://github.com/ethereum/go-ethereum/wiki/Command-Line-Options) for command line options. | | `abigen` | Source code generator to convert Ethereum contract definitions into easy to use, compile-time type-safe Go packages. It operates on plain [Ethereum contract ABIs](https://github.com/ethereum/wiki/wiki/Ethereum-Contract-ABI) with expanded functionality if the contract bytecode is also available. However, it also accepts Solidity source files, making development much more streamlined. Please see our [Native DApps](https://github.com/ethereum/go-ethereum/wiki/Native-DApps:-Go-bindings-to-Ethereum-contracts) wiki page for details. | | `bootnode` | Stripped down version of our Ethereum client implementation that only takes part in the network node discovery protocol, but does not run any of the higher level application protocols. It can be used as a lightweight bootstrap node to aid in finding peers in private networks. | | `evm` | Developer utility version of the EVM (Ethereum Virtual Machine) that is capable of running bytecode snippets within a configurable environment and execution mode. Its purpose is to allow isolated, fine-grained debugging of EVM opcodes (e.g. `evm --code 60ff60ff --debug`). | | `gethrpctest` | Developer utility tool to support our [ethereum/rpc-test](https://github.com/ethereum/rpc-tests) test suite which validates baseline conformity to the [Ethereum JSON RPC](https://github.com/ethereum/wiki/wiki/JSON-RPC) specs. Please see the [test suite's readme](https://github.com/ethereum/rpc-tests/blob/master/README.md) for details. | | `rlpdump` | Developer utility tool to convert binary RLP ([Recursive Length Prefix](https://github.com/ethereum/wiki/wiki/RLP)) dumps (data encoding used by the Ethereum protocol both network as well as consensus wise) to user-friendlier hierarchical representation (e.g. `rlpdump --hex CE0183FFFFFFC4C304050583616263`). | | `puppeth` | a CLI wizard that aids in creating a new Ethereum network. | ## Running `geth` Going through all the possible command line flags is out of scope here (please consult our [CLI Wiki page](https://github.com/ethereum/go-ethereum/wiki/Command-Line-Options)), but we've enumerated a few common parameter combos to get you up to speed quickly on how you can run your own `geth` instance. ### Full node on the main Ethereum network By far the most common scenario is people wanting to simply interact with the Ethereum network: create accounts; transfer funds; deploy and interact with contracts. For this particular use-case the user doesn't care about years-old historical data, so we can fast-sync quickly to the current state of the network. To do so: ```shell $ geth console ``` This command will: * Start `geth` in fast sync mode (default, can be changed with the `--syncmode` flag), causing it to download more data in exchange for avoiding processing the entire history of the Ethereum network, which is very CPU intensive. * Start up `geth`'s built-in interactive [JavaScript console](https://github.com/ethereum/go-ethereum/wiki/JavaScript-Console), (via the trailing `console` subcommand) through which you can invoke all official [`web3` methods](https://github.com/ethereum/wiki/wiki/JavaScript-API) as well as `geth`'s own [management APIs](https://github.com/ethereum/go-ethereum/wiki/Management-APIs). This tool is optional and if you leave it out you can always attach to an already running `geth` instance with `geth attach`. ### A Full node on the Ethereum test network Transitioning towards developers, if you'd like to play around with creating Ethereum contracts, you almost certainly would like to do that without any real money involved until you get the hang of the entire system. In other words, instead of attaching to the main network, you want to join the **test** network with your node, which is fully equivalent to the main network, but with play-Ether only. ```shell $ geth --testnet console ``` The `console` subcommand has the exact same meaning as above and they are equally useful on the testnet too. Please see above for their explanations if you've skipped here. Specifying the `--testnet` flag, however, will reconfigure your `geth` instance a bit: * Instead of using the default data directory (`~/.ethereum` on Linux for example), `geth` will nest itself one level deeper into a `testnet` subfolder (`~/.ethereum/testnet` on Linux). Note, on OSX and Linux this also means that attaching to a running testnet node requires the use of a custom endpoint since `geth attach` will try to attach to a production node endpoint by default. E.g. `geth attach <datadir>/testnet/geth.ipc`. Windows users are not affected by this. * Instead of connecting the main Ethereum network, the client will connect to the test network, which uses different P2P bootnodes, different network IDs and genesis states. *Note: Although there are some internal protective measures to prevent transactions from crossing over between the main network and test network, you should make sure to always use separate accounts for play-money and real-money. Unless you manually move accounts, `geth` will by default correctly separate the two networks and will not make any accounts available between them.* ### Full node on the Rinkeby test network The above test network is a cross-client one based on the ethash proof-of-work consensus algorithm. As such, it has certain extra overhead and is more susceptible to reorganization attacks due to the network's low difficulty/security. Go Ethereum also supports connecting to a proof-of-authority based test network called [*Rinkeby*](https://www.rinkeby.io) (operated by members of the community). This network is lighter, more secure, but is only supported by go-ethereum. ```shell $ geth --rinkeby console ``` ### Configuration As an alternative to passing the numerous flags to the `geth` binary, you can also pass a configuration file via: ```shell $ geth --config /path/to/your_config.toml ``` To get an idea how the file should look like you can use the `dumpconfig` subcommand to export your existing configuration: ```shell $ geth --your-favourite-flags dumpconfig ``` *Note: This works only with `geth` v1.6.0 and above.* #### Docker quick start One of the quickest ways to get Ethereum up and running on your machine is by using Docker: ```shell docker run -d --name ethereum-node -v /Users/alice/ethereum:/root \ -p 8545:8545 -p 30303:30303 \ ethereum/client-go ``` This will start `geth` in fast-sync mode with a DB memory allowance of 1GB just as the above command does. It will also create a persistent volume in your home directory for saving your blockchain as well as map the default ports. There is also an `alpine` tag available for a slim version of the image. Do not forget `--rpcaddr 0.0.0.0`, if you want to access RPC from other containers and/or hosts. By default, `geth` binds to the local interface and RPC endpoints is not accessible from the outside. ### Programmatically interfacing `geth` nodes As a developer, sooner rather than later you'll want to start interacting with `geth` and the Ethereum network via your own programs and not manually through the console. To aid this, `geth` has built-in support for a JSON-RPC based APIs ([standard APIs](https://github.com/ethereum/wiki/wiki/JSON-RPC) and [`geth` specific APIs](https://github.com/ethereum/go-ethereum/wiki/Management-APIs)). These can be exposed via HTTP, WebSockets and IPC (UNIX sockets on UNIX based platforms, and named pipes on Windows). The IPC interface is enabled by default and exposes all the APIs supported by `geth`, whereas the HTTP and WS interfaces need to manually be enabled and only expose a subset of APIs due to security reasons. These can be turned on/off and configured as you'd expect. HTTP based JSON-RPC API options: * `--rpc` Enable the HTTP-RPC server * `--rpcaddr` HTTP-RPC server listening interface (default: `localhost`) * `--rpcport` HTTP-RPC server listening port (default: `8545`) * `--rpcapi` API's offered over the HTTP-RPC interface (default: `eth,net,web3`) * `--rpccorsdomain` Comma separated list of domains from which to accept cross origin requests (browser enforced) * `--ws` Enable the WS-RPC server * `--wsaddr` WS-RPC server listening interface (default: `localhost`) * `--wsport` WS-RPC server listening port (default: `8546`) * `--wsapi` API's offered over the WS-RPC interface (default: `eth,net,web3`) * `--wsorigins` Origins from which to accept websockets requests * `--ipcdisable` Disable the IPC-RPC server * `--ipcapi` API's offered over the IPC-RPC interface (default: `admin,debug,eth,miner,net,personal,shh,txpool,web3`) * `--ipcpath` Filename for IPC socket/pipe within the datadir (explicit paths escape it) You'll need to use your own programming environments' capabilities (libraries, tools, etc) to connect via HTTP, WS or IPC to a `geth` node configured with the above flags and you'll need to speak [JSON-RPC](https://www.jsonrpc.org/specification) on all transports. You can reuse the same connection for multiple requests! **Note: Please understand the security implications of opening up an HTTP/WS based transport before doing so! Hackers on the internet are actively trying to subvert Ethereum nodes with exposed APIs! Further, all browser tabs can access locally running web servers, so malicious web pages could try to subvert locally available APIs!** ### Operating a private network Maintaining your own private network is more involved as a lot of configurations taken for granted in the official networks need to be manually set up. #### Defining the private genesis state First, you'll need to create the genesis state of your networks, which all nodes need to be aware of and agree upon. This consists of a small JSON file (e.g. call it `genesis.json`): ```json { "config": { "chainId": <arbitrary positive integer>, "homesteadBlock": 0, "eip150Block": 0, "eip155Block": 0, "eip158Block": 0, "byzantiumBlock": 0, "constantinopleBlock": 0, "petersburgBlock": 0 }, "alloc": {}, "coinbase": "0x0000000000000000000000000000000000000000", "difficulty": "0x20000", "extraData": "", "gasLimit": "0x2fefd8", "nonce": "0x0000000000000042", "mixhash": "0x0000000000000000000000000000000000000000000000000000000000000000", "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000", "timestamp": "0x00" } ``` The above fields should be fine for most purposes, although we'd recommend changing the `nonce` to some random value so you prevent unknown remote nodes from being able to connect to you. If you'd like to pre-fund some accounts for easier testing, create the accounts and populate the `alloc` field with their addresses. ```json "alloc": { "0x0000000000000000000000000000000000000001": { "balance": "111111111" }, "0x0000000000000000000000000000000000000002": { "balance": "222222222" } } ``` With the genesis state defined in the above JSON file, you'll need to initialize **every** `geth` node with it prior to starting it up to ensure all blockchain parameters are correctly set: ```shell $ geth init path/to/genesis.json ``` #### Creating the rendezvous point With all nodes that you want to run initialized to the desired genesis state, you'll need to start a bootstrap node that others can use to find each other in your network and/or over the internet. The clean way is to configure and run a dedicated bootnode: ```shell $ bootnode --genkey=boot.key $ bootnode --nodekey=boot.key ``` With the bootnode online, it will display an [`enode` URL](https://github.com/ethereum/wiki/wiki/enode-url-format) that other nodes can use to connect to it and exchange peer information. Make sure to replace the displayed IP address information (most probably `[::]`) with your externally accessible IP to get the actual `enode` URL. *Note: You could also use a full-fledged `geth` node as a bootnode, but it's the less recommended way.* #### Starting up your member nodes With the bootnode operational and externally reachable (you can try `telnet <ip> <port>` to ensure it's indeed reachable), start every subsequent `geth` node pointed to the bootnode for peer discovery via the `--bootnodes` flag. It will probably also be desirable to keep the data directory of your private network separated, so do also specify a custom `--datadir` flag. ```shell $ geth --datadir=path/to/custom/data/folder --bootnodes=<bootnode-enode-url-from-above> ``` *Note: Since your network will be completely cut off from the main and test networks, you'll also need to configure a miner to process transactions and create new blocks for you.* #### Running a private miner Mining on the public Ethereum network is a complex task as it's only feasible using GPUs, requiring an OpenCL or CUDA enabled `ethminer` instance. For information on such a setup, please consult the [EtherMining subreddit](https://www.reddit.com/r/EtherMining/) and the [ethminer](https://github.com/ethereum-mining/ethminer) repository. In a private network setting, however a single CPU miner instance is more than enough for practical purposes as it can produce a stable stream of blocks at the correct intervals without needing heavy resources (consider running on a single thread, no need for multiple ones either). To start a `geth` instance for mining, run it with all your usual flags, extended by: ```shell $ geth <usual-flags> --mine --miner.threads=1 --etherbase=0x0000000000000000000000000000000000000000 ``` Which will start mining blocks and transactions on a single CPU thread, crediting all proceedings to the account specified by `--etherbase`. You can further tune the mining by changing the default gas limit blocks converge to (`--targetgaslimit`) and the price transactions are accepted at (`--gasprice`). ## Contribution Thank you for considering to help out with the source code! We welcome contributions from anyone on the internet, and are grateful for even the smallest of fixes! If you'd like to contribute to go-ethereum, please fork, fix, commit and send a pull request for the maintainers to review and merge into the main code base. If you wish to submit more complex changes though, please check up with the core devs first on [our gitter channel](https://gitter.im/ethereum/go-ethereum) to ensure those changes are in line with the general philosophy of the project and/or get some early feedback which can make both your efforts much lighter as well as our review and merge procedures quick and simple. Please make sure your contributions adhere to our coding guidelines: * Code must adhere to the official Go [formatting](https://golang.org/doc/effective_go.html#formatting) guidelines (i.e. uses [gofmt](https://golang.org/cmd/gofmt/)). * Code must be documented adhering to the official Go [commentary](https://golang.org/doc/effective_go.html#commentary) guidelines. * Pull requests need to be based on and opened against the `master` branch. * Commit messages should be prefixed with the package(s) they modify. * E.g. "eth, rpc: make trace configs optional" Please see the [Developers' Guide](https://github.com/ethereum/go-ethereum/wiki/Developers'-Guide) for more details on configuring your environment, managing project dependencies, and testing procedures. ## License The go-ethereum library (i.e. all code outside of the `cmd` directory) is licensed under the [GNU Lesser General Public License v3.0](https://www.gnu.org/licenses/lgpl-3.0.en.html), also included in our repository in the `COPYING.LESSER` file. The go-ethereum binaries (i.e. all code inside of the `cmd` directory) is licensed under the [GNU General Public License v3.0](https://www.gnu.org/licenses/gpl-3.0.en.html), also included in our repository in the `COPYING` file. # test-next - The new tests for the next version of sdk will use vitest - The vitest tests are kept here seperated from mocha tests for now # Optimism (mainnet) ## Network Info - **Chain ID**: 10 - **Public RPC**: https://mainnet.optimism.io - **Block Explorer**: https://optimistic.etherscan.io ## Layer 1 Contracts <table> <tr> <th> <img width="506px" height="0px" /> <p><small>Contract</small></p> </th> <th> <img width="506px" height="0px" /> <p><small>Address</small></p> </th> </tr> <tr> <td> BondManager </td> <td align="center"> <a href="https://etherscan.io/address/0xcd626E1328b41fCF24737F137BcD4CE0c32bc8d1"> <code>0xcd626E1328b41fCF24737F137BcD4CE0c32bc8d1</code> </a> </td> </tr> <tr> <td> CanonicalTransactionChain </td> <td align="center"> <a href="https://etherscan.io/address/0x5E4e65926BA27467555EB562121fac00D24E9dD2"> <code>0x5E4e65926BA27467555EB562121fac00D24E9dD2</code> </a> </td> </tr> <tr> <td> ChainStorageContainer-CTC-batches </td> <td align="center"> <a href="https://etherscan.io/address/0xD16463EF9b0338CE3D73309028ef1714D220c024"> <code>0xD16463EF9b0338CE3D73309028ef1714D220c024</code> </a> </td> </tr> <tr> <td> ChainStorageContainer-SCC-batches </td> <td align="center"> <a href="https://etherscan.io/address/0xb0ddFf09c4019e31960de11bD845E836078E8EbE"> <code>0xb0ddFf09c4019e31960de11bD845E836078E8EbE</code> </a> </td> </tr> <tr> <td> Lib_AddressManager </td> <td align="center"> <a href="https://etherscan.io/address/0xdE1FCfB0851916CA5101820A69b13a4E276bd81F"> <code>0xdE1FCfB0851916CA5101820A69b13a4E276bd81F</code> </a> </td> </tr> <tr> <td> Proxy__OVM_L1CrossDomainMessenger </td> <td align="center"> <a href="https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1"> <code>0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1</code> </a> </td> </tr> <tr> <td> Proxy__OVM_L1StandardBridge </td> <td align="center"> <a href="https://etherscan.io/address/0x99C9fc46f92E8a1c0deC1b1747d010903E884bE1"> <code>0x99C9fc46f92E8a1c0deC1b1747d010903E884bE1</code> </a> </td> </tr> <tr> <td> StateCommitmentChain </td> <td align="center"> <a href="https://etherscan.io/address/0xBe5dAb4A2e9cd0F27300dB4aB94BeE3A233AEB19"> <code>0xBe5dAb4A2e9cd0F27300dB4aB94BeE3A233AEB19</code> </a> </td> </tr> <tr> <td> TeleportrDeposit </td> <td align="center"> <a href="https://etherscan.io/address/0x52ec2F3d7C5977A8E558C8D9C6000B615098E8fC"> <code>0x52ec2F3d7C5977A8E558C8D9C6000B615098E8fC</code> </a> </td> </tr> </table> ## Layer 2 Contracts <table> <tr> <th> <img width="506px" height="0px" /> <p><small>Contract</small></p> </th> <th> <img width="506px" height="0px" /> <p><small>Address</small></p> </th> </tr> <tr> <td> OVM_L2ToL1MessagePasser </td> <td align="center"> <a href="https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000000"> <code>0x4200000000000000000000000000000000000000</code> </a> </td> </tr> <tr> <td> OVM_DeployerWhitelist </td> <td align="center"> <a href="https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000002"> <code>0x4200000000000000000000000000000000000002</code> </a> </td> </tr> <tr> <td> L2CrossDomainMessenger </td> <td align="center"> <a href="https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000007"> <code>0x4200000000000000000000000000000000000007</code> </a> </td> </tr> <tr> <td> OVM_GasPriceOracle </td> <td align="center"> <a href="https://optimistic.etherscan.io/address/0x420000000000000000000000000000000000000F"> <code>0x420000000000000000000000000000000000000F</code> </a> </td> </tr> <tr> <td> L2StandardBridge </td> <td align="center"> <a href="https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000010"> <code>0x4200000000000000000000000000000000000010</code> </a> </td> </tr> <tr> <td> OVM_SequencerFeeVault </td> <td align="center"> <a href="https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000011"> <code>0x4200000000000000000000000000000000000011</code> </a> </td> </tr> <tr> <td> L2StandardTokenFactory </td> <td align="center"> <a href="https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000012"> <code>0x4200000000000000000000000000000000000012</code> </a> </td> </tr> <tr> <td> OVM_L1BlockNumber </td> <td align="center"> <a href="https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000013"> <code>0x4200000000000000000000000000000000000013</code> </a> </td> </tr> <tr> <td> OVM_ETH </td> <td align="center"> <a href="https://optimistic.etherscan.io/address/0xDeadDeAddeAddEAddeadDEaDDEAdDeaDDeAD0000"> <code>0xDeadDeAddeAddEAddeadDEaDDEAdDeaDDeAD0000</code> </a> </td> </tr> <tr> <td> WETH9 </td> <td align="center"> <a href="https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000006"> <code>0x4200000000000000000000000000000000000006</code> </a> </td> </tr> </table> # op-program Implements a fault proof program that runs through the rollup state-transition to verify an L2 output from L1 inputs. This verifiable output can then resolve a disputed output on L1. The program is designed such that it can be run in a deterministic way such that two invocations with the same input data wil result in not only the same output, but the same program execution trace. This allows it to be run in an on-chain VM as part of the dispute resolution process. ## Compiling To build op-program, from within the `op-program` directory run: ```shell make op-program ``` This resulting executable will be in `./bin/op-program` ## Testing To run op-program unit tests, from within the `op-program` directory run: ```shell make test ``` ## Lint To run the linter, from within the `op-program` directory run: ```shell make lint ``` This requires having `golangci-lint` installed. ## Running From within the `op-program` directory, options can be reviewed with: ```shell ./bin/op-program --help ``` # @eth-optimism/sdk [](https://codecov.io/gh/ethereum-optimism/optimism) The `@eth-optimism/sdk` package provides a set of tools for interacting with Optimism. ## Installation ``` npm install @eth-optimism/sdk ``` ## Docs You can find auto-generated API documentation over at [sdk.optimism.io](https://sdk.optimism.io). ## Using the SDK ### CrossChainMessenger The [`CrossChainMessenger`](https://github.com/ethereum-optimism/optimism/blob/develop/packages/sdk/src/cross-chain-messenger.ts) class simplifies the process of moving assets and data between Ethereum and Optimism. You can use this class to, for example, initiate a withdrawal of ERC20 tokens from Optimism back to Ethereum, accurately track when the withdrawal is ready to be finalized on Ethereum, and execute the finalization transaction after the challenge period has elapsed. The `CrossChainMessenger` can handle deposits and withdrawals of ETH and any ERC20-compatible token. Detailed API descriptions can be found at [sdk.optimism.io](https://sdk.optimism.io/classes/crosschainmessenger). The `CrossChainMessenger` automatically connects to all relevant contracts so complex configuration is not necessary. ### L2Provider and related utilities The Optimism SDK includes [various utilities](https://github.com/ethereum-optimism/optimism/blob/develop/packages/sdk/src/l2-provider.ts) for handling Optimism's [transaction fee model](https://community.optimism.io/docs/developers/build/transaction-fees/). For instance, [`estimateTotalGasCost`](https://sdk.optimism.io/modules.html#estimateTotalGasCost) will estimate the total cost (in wei) to send at transaction on Optimism including both the L2 execution cost and the L1 data cost. You can also use the [`asL2Provider`](https://sdk.optimism.io/modules.html#asL2Provider) function to wrap an ethers Provider object into an `L2Provider` which will have all of these helper functions attached. ### Other utilities The SDK contains other useful helper functions and constants. For a complete list, refer to the auto-generated [SDK documentation](https://sdk.optimism.io/) # Swarm https://swarm.ethereum.org Swarm is a distributed storage platform and content distribution service, a native base layer service of the ethereum web3 stack. The primary objective of Swarm is to provide a decentralized and redundant store for dapp code and data as well as block chain and state data. Swarm is also set out to provide various base layer services for web3, including node-to-node messaging, media streaming, decentralised database services and scalable state-channel infrastructure for decentralised service economies. **Note**: The codebase has been moved to [ethersphere/swarm](https://github.com/ethersphere/swarm) --- title: OP Stack codebase V1 - Bedrock lang: en-US --- ## Overview The first release of the OP Stack codebase is called **Bedrock**. The Bedrock release primarily consists of the core software required to run L2 blockchains and was originally designed to power an upgrade to the Optimism Mainnet network. ## Resources ### Rollup Protocol Learn about the basics of the Rollup protocol used by Bedrock on the [Rollup Protocol](https://community.optimism.io/docs/protocol/2-rollup-protocol/) page. ### Bedrock Explainer Learn all about the Bedrock release of the OP Stack by reading the [Bedrock Explainer](./explainer.md). ### Specifications Dive deep into the specifications for the Bedrock release in the [specs folder of the Optimism Monorepo](https://github.com/ethereum-optimism/optimism/blob/develop/specs/README.md). ## Components - [`op-node`](https://github.com/ethereum-optimism/optimism/tree/develop/op-node) - [`op-geth`](https://github.com/ethereum-optimism/op-geth) - [`op-batcher`](https://github.com/ethereum-optimism/optimism/tree/develop/op-batcher) - [`op-proposer`](https://github.com/ethereum-optimism/optimism/tree/develop/op-proposer) - [`contracts-bedrock`](https://github.com/ethereum-optimism/optimism/tree/develop/packages/contracts-bedrock) - [`fault-detector`](https://github.com/ethereum-optimism/optimism/tree/develop/packages/fault-detector) - [`sdk`](https://github.com/ethereum-optimism/optimism/tree/develop/packages/sdk) - [`chain-mon`](https://github.com/ethereum-optimism/optimism/tree/develop/packages/chain-mon) # crossdomain/testdata Real world test data is used to generate test vectors for the withdrawal hashing. The `trace.sh` script will generate artifacts used as part of the tests. It accepts a single argument, being the transaction hash to fetch artifacts for. It will fetch a receipt, a call trace and a state diff. The tests require that a file named after the transaction hash exists in each of the directories `call-traces`, `receipts` and `state-diffs`. The `trace.sh` script will ensure that the files are created correctly. # @eth-optimism/fault-detector [](https://codecov.io/gh/ethereum-optimism/optimism) The `fault-detector` is a simple service for detecting discrepancies between your local view of the Optimism network and the L2 output proposals published to Ethereum. ## Installation Clone, install, and build the Optimism monorepo: ``` git clone https://github.com/ethereum-optimism/optimism.git yarn install yarn build ``` ## Running the service Copy `.env.example` into a new file named `.env`, then set the environment variables listed there. Once your environment variables have been set, run the service via: ``` yarn start ``` ## Ports - API is exposed at `$FAULT_DETECTOR__HOSTNAME:$FAULT_DETECTOR__PORT/api` - Metrics are exposed at `$FAULT_DETECTOR__HOSTNAME:$FAULT_DETECTOR__PORT/metrics` - `$FAULT_DETECTOR__HOSTNAME` defaults to `0.0.0.0` - `$FAULT_DETECTOR__PORT` defaults to `7300` ## What this service does The `fault-detector` detects differences between the transaction results generated by your local Optimism node and the transaction results actually published to Ethereum. Currently, transaction results take the form of [the root of the Optimism state trie](https://medium.com/@eiki1212/ethereum-state-trie-architecture-explained-a30237009d4e). For every Optimism block, the state root of the block is published to the [`StateCommitmentChain`](https://github.com/ethereum-optimism/optimism/blob/39b7262cc3ffd78cd314341b8512b2683c1d9af7/packages/contracts/contracts/L1/rollup/StateCommitmentChain.sol) contract on Ethereum. We can therefore detect differences by, for each block, checking the state root of the given block as reported by an Optimism node and the state root as published to Ethereum. We export a series of Prometheus metrics that you can use to trigger alerting when issues are detected. Check the list of available metrics via `yarn start --help`: ```sh > yarn start --help yarn run v1.22.19 $ ts-node ./src/service.ts --help Usage: service [options] Options: --l1rpcprovider Provider for interacting with L1 (env: FAULT_DETECTOR__L1_RPC_PROVIDER) --l2rpcprovider Provider for interacting with L2 (env: FAULT_DETECTOR__L2_RPC_PROVIDER) --startbatchindex Batch index to start checking from. Setting it to -1 will cause the fault detector to find the first state batch index that has not yet passed the fault proof window (env: FAULT_DETECTOR__START_BATCH_INDEX, default value: -1) --loopintervalms Loop interval in milliseconds (env: FAULT_DETECTOR__LOOP_INTERVAL_MS) --bedrock Whether or not the service is running against a Bedrock chain (env: FAULT_DETECTOR__BEDROCK, default value: false) --port Port for the app server (env: FAULT_DETECTOR__PORT) --hostname Hostname for the app server (env: FAULT_DETECTOR__HOSTNAME) -h, --help display help for command Metrics: highest_checked_batch_index Highest good batch index (type: Gauge) highest_known_batch_index Highest known batch index (type: Gauge) is_currently_mismatched 0 if state is ok, 1 if state is mismatched (type: Gauge) l1_node_connection_failures Number of times L1 node connection has failed (type: Gauge) l2_node_connection_failures Number of times L2 node connection has failed (type: Gauge) metadata Service metadata (type: Gauge) unhandled_errors Unhandled errors (type: Counter) Done in 2.19s. ``` go-metrics ==========  Go port of Coda Hale's Metrics library: <https://github.com/dropwizard/metrics>. Documentation: <https://godoc.org/github.com/rcrowley/go-metrics>. Usage ----- Create and update metrics: ```go c := metrics.NewCounter() metrics.Register("foo", c) c.Inc(47) g := metrics.NewGauge() metrics.Register("bar", g) g.Update(47) r := NewRegistry() g := metrics.NewRegisteredFunctionalGauge("cache-evictions", r, func() int64 { return cache.getEvictionsCount() }) s := metrics.NewExpDecaySample(1028, 0.015) // or metrics.NewUniformSample(1028) h := metrics.NewHistogram(s) metrics.Register("baz", h) h.Update(47) m := metrics.NewMeter() metrics.Register("quux", m) m.Mark(47) t := metrics.NewTimer() metrics.Register("bang", t) t.Time(func() {}) t.Update(47) ``` Register() is not threadsafe. For threadsafe metric registration use GetOrRegister: ```go t := metrics.GetOrRegisterTimer("account.create.latency", nil) t.Time(func() {}) t.Update(47) ``` **NOTE:** Be sure to unregister short-lived meters and timers otherwise they will leak memory: ```go // Will call Stop() on the Meter to allow for garbage collection metrics.Unregister("quux") // Or similarly for a Timer that embeds a Meter metrics.Unregister("bang") ``` Periodically log every metric in human-readable form to standard error: ```go go metrics.Log(metrics.DefaultRegistry, 5 * time.Second, log.New(os.Stderr, "metrics: ", log.Lmicroseconds)) ``` Periodically log every metric in slightly-more-parseable form to syslog: ```go w, _ := syslog.Dial("unixgram", "/dev/log", syslog.LOG_INFO, "metrics") go metrics.Syslog(metrics.DefaultRegistry, 60e9, w) ``` Periodically emit every metric to Graphite using the [Graphite client](https://github.com/cyberdelia/go-metrics-graphite): ```go import "github.com/cyberdelia/go-metrics-graphite" addr, _ := net.ResolveTCPAddr("tcp", "127.0.0.1:2003") go graphite.Graphite(metrics.DefaultRegistry, 10e9, "metrics", addr) ``` Periodically emit every metric into InfluxDB: **NOTE:** this has been pulled out of the library due to constant fluctuations in the InfluxDB API. In fact, all client libraries are on their way out. see issues [#121](https://github.com/rcrowley/go-metrics/issues/121) and [#124](https://github.com/rcrowley/go-metrics/issues/124) for progress and details. ```go import "github.com/vrischmann/go-metrics-influxdb" go influxdb.InfluxDB(metrics.DefaultRegistry, 10e9, "127.0.0.1:8086", "database-name", "username", "password" ) ``` Periodically upload every metric to Librato using the [Librato client](https://github.com/mihasya/go-metrics-librato): **Note**: the client included with this repository under the `librato` package has been deprecated and moved to the repository linked above. ```go import "github.com/mihasya/go-metrics-librato" go librato.Librato(metrics.DefaultRegistry, 10e9, // interval "example@example.com", // account owner email address "token", // Librato API token "hostname", // source []float64{0.95}, // percentiles to send time.Millisecond, // time unit ) ``` Periodically emit every metric to StatHat: ```go import "github.com/rcrowley/go-metrics/stathat" go stathat.Stathat(metrics.DefaultRegistry, 10e9, "example@example.com") ``` Maintain all metrics along with expvars at `/debug/metrics`: This uses the same mechanism as [the official expvar](https://golang.org/pkg/expvar/) but exposed under `/debug/metrics`, which shows a json representation of all your usual expvars as well as all your go-metrics. ```go import "github.com/rcrowley/go-metrics/exp" exp.Exp(metrics.DefaultRegistry) ``` Installation ------------ ```sh go get github.com/rcrowley/go-metrics ``` StatHat support additionally requires their Go client: ```sh go get github.com/stathat/go ``` Publishing Metrics ------------------ Clients are available for the following destinations: * Librato - https://github.com/mihasya/go-metrics-librato * Graphite - https://github.com/cyberdelia/go-metrics-graphite * InfluxDB - https://github.com/vrischmann/go-metrics-influxdb * Ganglia - https://github.com/appscode/metlia * Prometheus - https://github.com/deathowl/go-metrics-prometheus * DataDog - https://github.com/syntaqx/go-metrics-datadog * SignalFX - https://github.com/pascallouisperez/go-metrics-signalfx # Minimum Balance Agent ## Description A forta agent which detects when a specified account balance is below the specified threshold. ## Installing and building `yarn && yarn build` ## Running 1. Copy `.env.example` into `.env` and set the appropriate values. 2. Copy `forta.config.example.json` into `forta.config.json`, and set the RPC endpoint (yes, this is duplicated in the .env file). 2. `yarn run start:prod` ## Alerts - `OPTIMISM-BALANCE-DANGER-[ACCOUNT_NAME]` - Fired when the specified account balance is below the configured DANGER threshold - Severity is always set to "high" - Type is always set to "info" - Metadata "balance" field contains amount of wei in account # Optimism Deployments - [Optimism (mainnet)](./mainnet#readme) - [Optimism Goerli (public testnet)](./goerli#readme) # Batch Decoding Tool The batch decoding tool is a utility to aid in debugging the batch submitter & the op-node by looking at what batches were submitted on L1. ## Design Philosophy The `batch_decoder` tool is designed to be simple & flexible. It offloads as much data analysis as possible to other tools. It is built around manipulating JSON on disk. The first stage is to fetch all transaction which are sent to a batch inbox address. Those transactions are decoded into frames in that step & information about them is recorded. After transactions are fetched the frames are re-assembled into channels in a second step that does not touch the network. ## Commands ### Fetch `batch_decoder fetch` pulls all L1 transactions sent to the batch inbox address in a given L1 block range and then stores them on disk to a specified path as JSON files where the name of the file is the transaction hash. ### Reassemble `batch_decoder reassemble` goes through all of the found frames in the cache & then turns them into channels. It then stores the channels with metadata on disk where the file name is the Channel ID. ### Force Close `batch_decoder force-close` will create a transaction data that can be sent from the batcher address to the batch inbox address which will force close the given channels. This will allow future channels to be read without waiting for the channel timeout. It uses uses the results from `batch_decoder fetch` to create the close transaction because the transaction it creates for a specific channel requires information about if the channel has been closed or not. If it has been closed already but is missing specific frames those frames need to be generated differently than simply closing the channel. ## JQ Cheat Sheet `jq` is a really useful utility for manipulating JSON files. ``` # Pretty print a JSON file jq . $JSON_FILE # Print the number of valid & invalid transactions jq .valid_data $TX_DIR/* | sort | uniq -c # Select all transactions that have invalid data & then print the transaction hash jq "select(.valid_data == false)|.tx.hash" $TX_DIR # Select all channels that are not ready and then get the id and inclusion block & tx hash of the first frame. jq "select(.is_ready == false)|[.id, .frames[0].inclusion_block, .frames[0].transaction_hash]" $CHANNEL_DIR # Show all of the frames in a channel without seeing the batches or frame data jq 'del(.batches)|del(.frames[]|.frame.data)' $CHANNEL_FILE # Show all batches (without timestamps) in a channel jq '.batches|del(.[]|.Transactions)' $CHANNEL_FILE ``` ## Roadmap - Parallel transaction fetching (CLI-3563) - Pull the batches out of channels & store that information inside the ChannelWithMetadata (CLI-3565) - Transaction Bytes used - Total uncompressed (different from tx bytes) + compressed bytes - Invert ChannelWithMetadata so block numbers/hashes are mapped to channels they are submitted in (CLI-3560) # Overview These files allow you to expose the l2geth RPC/WS ports to the Internet, TLS-encrypted, via a traefik reverse proxy and Let's Encrypt Certs. Instructions for the CloudFlare and AWS options are kept up-to-date at https://eth-docker.net/docs/Usage/ReverseProxy Please open issues for this contribution in the fork at https://github.com/CryptoManufaktur-io/op-replica ## Usage The `.env` in the main project directory needs to contain traefik-specific variables. Make a backup copy with `cp .env .env.bak`, then bring in the `default.env` from this directory: `cp contrib/traefik-haproxy/default.env .env`. Adjust replica variables to match what they were and add either `contrib/traefik-haproxy/traefik-cf.yml` or `contrib/traefik-haproxy/traefik-aws.yml` to `COMPOSE_FILE`. Then edit traefik-specific variables for CloudFlare or AWS as per above-linked instructions. Alternatively, if you have traefik running in its own stack, you can add `contrib/traefik-haproxy/ext-network.yml` and adjust it for the network traefik runs in. The haproxy files are examples taken from a docker swarm mode installation. They should work with minor modifications in k8s via kompose or Portainer. `optimism-haproxy.cfg` is the configuration file for haproxy, adjust the host and domain names you'll use in there `haproxy-docker-sample.yml` is an example docker-compose style deployment in docker swarm. For example, you may have two replicas called `optimism-a.example.com` and `optimism-b.example.com`. Both are configured in their `traefik.env` to respond to `optimism-lb.example.com`. Haproxy has a local alias `optimism-lb.example.com` and will forward traffic to a and b servers, which know to respond to the `optimism-lb` hostname. `check-ecsync-optimism.sh` is an external check script to take a server out of rotation when it is not in sync. It relies on the sequencer-health metrics being available via traefik, and assumes that servers have `-a`, `-b`, `-c` etc suffixes. The maximum slot distance and name of the healthcheck host without suffix are configured in the script. # Clef Clef can be used to sign transactions and data and is meant as a(n eventual) replacement for Geth's account management. This allows DApps to not depend on Geth's account management. When a DApp wants to sign data (or a transaction), it can send the content to Clef, which will then provide the user with context and asks for permission to sign the content. If the users grants the signing request, Clef will send the signature back to the DApp. This setup allows a DApp to connect to a remote Ethereum node and send transactions that are locally signed. This can help in situations when a DApp is connected to an untrusted remote Ethereum node, because a local one is not available, not synchronised with the chain, or is a node that has no built-in (or limited) account management. Clef can run as a daemon on the same machine, off a usb-stick like [USB armory](https://inversepath.com/usbarmory), or even a separate VM in a [QubesOS](https://www.qubes-os.org/) type setup. Check out the * [CLI tutorial](tutorial.md) for some concrete examples on how Clef works. * [Setup docs](docs/setup.md) for infos on how to configure Clef on QubesOS or USB Armory. * [Data types](datatypes.md) for details on the communication messages between Clef and an external UI. ## Command line flags Clef accepts the following command line options: ``` COMMANDS: init Initialize the signer, generate secret storage attest Attest that a js-file is to be used setpw Store a credential for a keystore file delpw Remove a credential for a keystore file gendoc Generate documentation about json-rpc format help Shows a list of commands or help for one command GLOBAL OPTIONS: --loglevel value log level to emit to the screen (default: 4) --keystore value Directory for the keystore (default: "$HOME/.ethereum/keystore") --configdir value Directory for Clef configuration (default: "$HOME/.clef") --chainid value Chain id to use for signing (1=mainnet, 3=Ropsten, 4=Rinkeby, 5=Goerli) (default: 1) --lightkdf Reduce key-derivation RAM & CPU usage at some expense of KDF strength --nousb Disables monitoring for and managing USB hardware wallets --pcscdpath value Path to the smartcard daemon (pcscd) socket file (default: "/run/pcscd/pcscd.comm") --rpcaddr value HTTP-RPC server listening interface (default: "localhost") --rpcvhosts value Comma separated list of virtual hostnames from which to accept requests (server enforced). Accepts '*' wildcard. (default: "localhost") --ipcdisable Disable the IPC-RPC server --ipcpath Filename for IPC socket/pipe within the datadir (explicit paths escape it) --rpc Enable the HTTP-RPC server --rpcport value HTTP-RPC server listening port (default: 8550) --signersecret value A file containing the (encrypted) master seed to encrypt Clef data, e.g. keystore credentials and ruleset hash --4bytedb-custom value File used for writing new 4byte-identifiers submitted via API (default: "./4byte-custom.json") --auditlog value File used to emit audit logs. Set to "" to disable (default: "audit.log") --rules value Path to the rule file to auto-authorize requests with --stdio-ui Use STDIN/STDOUT as a channel for an external UI. This means that an STDIN/STDOUT is used for RPC-communication with a e.g. a graphical user interface, and can be used when Clef is started by an external process. --stdio-ui-test Mechanism to test interface between Clef and UI. Requires 'stdio-ui'. --advanced If enabled, issues warnings instead of rejections for suspicious requests. Default off --help, -h show help --version, -v print the version ``` Example: ``` $ clef -keystore /my/keystore -chainid 4 ``` ## Security model The security model of Clef is as follows: * One critical component (the Clef binary / daemon) is responsible for handling cryptographic operations: signing, private keys, encryption/decryption of keystore files. * Clef has a well-defined 'external' API. * The 'external' API is considered UNTRUSTED. * Clef also communicates with whatever process that invoked the binary, via stdin/stdout. * This channel is considered 'trusted'. Over this channel, approvals and passwords are communicated. The general flow for signing a transaction using e.g. Geth is as follows:  In this case, `geth` would be started with `--signer http://localhost:8550` and would relay requests to `eth.sendTransaction`. ## TODOs Some snags and todos * [ ] Clef should take a startup param "--no-change", for UIs that do not contain the capability to perform changes to things, only approve/deny. Such a UI should be able to start the signer in a more secure mode by telling it that it only wants approve/deny capabilities. * [x] It would be nice if Clef could collect new 4byte-id:s/method selectors, and have a secondary database for those (`4byte_custom.json`). Users could then (optionally) submit their collections for inclusion upstream. * [ ] It should be possible to configure Clef to check if an account is indeed known to it, before passing on to the UI. The reason it currently does not, is that it would make it possible to enumerate accounts if it immediately returned "unknown account" (side channel attack). * [x] It should be possible to configure Clef to auto-allow listing (certain) accounts, instead of asking every time. * [x] Done Upon startup, Clef should spit out some info to the caller (particularly important when executed in `stdio-ui`-mode), invoking methods with the following info: * [x] Version info about the signer * [x] Address of API (HTTP/IPC) * [ ] List of known accounts * [ ] Have a default timeout on signing operations, so that if the user has not answered within e.g. 60 seconds, the request is rejected. * [ ] `account_signRawTransaction` * [ ] `account_bulkSignTransactions([] transactions)` should * only exist if enabled via config/flag * only allow non-data-sending transactions * all txs must use the same `from`-account * let the user confirm, showing * the total amount * the number of unique recipients * Geth todos - The signer should pass the `Origin` header as call-info to the UI. As of right now, the way that info about the request is put together is a bit of a hack into the HTTP server. This could probably be greatly improved. - Relay: Geth should be started in `geth --signer localhost:8550`. - Currently, the Geth APIs use `common.Address` in the arguments to transaction submission (e.g `to` field). This type is 20 `bytes`, and is incapable of carrying checksum information. The signer uses `common.MixedcaseAddress`, which retains the original input. - The Geth API should switch to use the same type, and relay `to`-account verbatim to the external API. * [x] Storage * [x] An encrypted key-value storage should be implemented. * See [rules.md](rules.md) for more info about this. * Another potential thing to introduce is pairing. * To prevent spurious requests which users just accept, implement a way to "pair" the caller with the signer (external API). * Thus Geth/cpp would cryptographically handshake and afterwards the caller would be allowed to make signing requests. * This feature would make the addition of rules less dangerous. * Wallets / accounts. Add API methods for wallets. ## Communication ### External API Clef listens to HTTP requests on `rpcaddr`:`rpcport` (or to IPC on `ipcpath`), with the same JSON-RPC standard as Geth. The messages are expected to be [JSON-RPC 2.0 standard](https://www.jsonrpc.org/specification). Some of these call can require user interaction. Clients must be aware that responses may be delayed significantly or may never be received if a users decides to ignore the confirmation request. The External API is **untrusted**: it does not accept credentials over this API, nor does it expect that requests have any authority. ### Internal UI API Clef has one native console-based UI, for operation without any standalone tools. However, there is also an API to communicate with an external UI. To enable that UI, the signer needs to be executed with the `--stdio-ui` option, which allocates `stdin` / `stdout` for the UI API. An example (insecure) proof-of-concept of has been implemented in `pythonsigner.py`. The model is as follows: * The user starts the UI app (`pythonsigner.py`). * The UI app starts `clef` with `--stdio-ui`, and listens to the process output for confirmation-requests. * `clef` opens the external HTTP API. * When the `signer` receives requests, it sends a JSON-RPC request via `stdout`. * The UI app prompts the user accordingly, and responds to `clef`. * `clef` signs (or not), and responds to the original request. ## External API See the [external API changelog](extapi_changelog.md) for information about changes to this API. ### Encoding - number: positive integers that are hex encoded - data: hex encoded data - string: ASCII string All hex encoded values must be prefixed with `0x`. ## Methods ### account_new #### Create new password protected account The signer will generate a new private key, encrypts it according to [web3 keystore spec](https://github.com/ethereum/wiki/wiki/Web3-Secret-Storage-Definition) and stores it in the keystore directory. The client is responsible for creating a backup of the keystore. If the keystore is lost there is no method of retrieving lost accounts. #### Arguments None #### Result - address [string]: account address that is derived from the generated key - url [string]: location of the keyfile #### Sample call ```json { "id": 0, "jsonrpc": "2.0", "method": "account_new", "params": [] } ``` Response ``` { "id": 0, "jsonrpc": "2.0", "result": { "address": "0xbea9183f8f4f03d427f6bcea17388bdff1cab133", "url": "keystore:///my/keystore/UTC--2017-08-24T08-40-15.419655028Z--bea9183f8f4f03d427f6bcea17388bdff1cab133" } } ``` ### account_list #### List available accounts List all accounts that this signer currently manages #### Arguments None #### Result - array with account records: - account.address [string]: account address that is derived from the generated key - account.type [string]: type of the - account.url [string]: location of the account #### Sample call ```json { "id": 1, "jsonrpc": "2.0", "method": "account_list" } ``` Response ``` { "id": 1, "jsonrpc": "2.0", "result": [ { "address": "0xafb2f771f58513609765698f65d3f2f0224a956f", "type": "account", "url": "keystore:///tmp/keystore/UTC--2017-08-24T07-26-47.162109726Z--afb2f771f58513609765698f65d3f2f0224a956f" }, { "address": "0xbea9183f8f4f03d427f6bcea17388bdff1cab133", "type": "account", "url": "keystore:///tmp/keystore/UTC--2017-08-24T08-40-15.419655028Z--bea9183f8f4f03d427f6bcea17388bdff1cab133" } ] } ``` ### account_signTransaction #### Sign transactions Signs a transactions and responds with the signed transaction in RLP encoded form. #### Arguments 2. transaction object: - `from` [address]: account to send the transaction from - `to` [address]: receiver account. If omitted or `0x`, will cause contract creation. - `gas` [number]: maximum amount of gas to burn - `gasPrice` [number]: gas price - `value` [number:optional]: amount of Wei to send with the transaction - `data` [data:optional]: input data - `nonce` [number]: account nonce 3. method signature [string:optional] - The method signature, if present, is to aid decoding the calldata. Should consist of `methodname(paramtype,...)`, e.g. `transfer(uint256,address)`. The signer may use this data to parse the supplied calldata, and show the user. The data, however, is considered totally untrusted, and reliability is not expected. #### Result - signed transaction in RLP encoded form [data] #### Sample call ```json { "id": 2, "jsonrpc": "2.0", "method": "account_signTransaction", "params": [ { "from": "0x1923f626bb8dc025849e00f99c25fe2b2f7fb0db", "gas": "0x55555", "gasPrice": "0x1234", "input": "0xabcd", "nonce": "0x0", "to": "0x07a565b7ed7d7a678680a4c162885bedbb695fe0", "value": "0x1234" } ] } ``` Response ```json { "id": 2, "jsonrpc": "2.0", "error": { "code": -32000, "message": "Request denied" } } ``` #### Sample call with ABI-data ```json { "id": 67, "jsonrpc": "2.0", "method": "account_signTransaction", "params": [ { "from": "0x694267f14675d7e1b9494fd8d72fefe1755710fa", "gas": "0x333", "gasPrice": "0x1", "nonce": "0x0", "to": "0x07a565b7ed7d7a678680a4c162885bedbb695fe0", "value": "0x0", "data": "0x4401a6e40000000000000000000000000000000000000000000000000000000000000012" }, "safeSend(address)" ] } ``` Response ```json { "jsonrpc": "2.0", "id": 67, "result": { "raw": "0xf88380018203339407a565b7ed7d7a678680a4c162885bedbb695fe080a44401a6e4000000000000000000000000000000000000000000000000000000000000001226a0223a7c9bcf5531c99be5ea7082183816eb20cfe0bbc322e97cc5c7f71ab8b20ea02aadee6b34b45bb15bc42d9c09de4a6754e7000908da72d48cc7704971491663", "tx": { "nonce": "0x0", "gasPrice": "0x1", "gas": "0x333", "to": "0x07a565b7ed7d7a678680a4c162885bedbb695fe0", "value": "0x0", "input": "0x4401a6e40000000000000000000000000000000000000000000000000000000000000012", "v": "0x26", "r": "0x223a7c9bcf5531c99be5ea7082183816eb20cfe0bbc322e97cc5c7f71ab8b20e", "s": "0x2aadee6b34b45bb15bc42d9c09de4a6754e7000908da72d48cc7704971491663", "hash": "0xeba2df809e7a612a0a0d444ccfa5c839624bdc00dd29e3340d46df3870f8a30e" } } } ``` Bash example: ```bash #curl -H "Content-Type: application/json" -X POST --data '{"jsonrpc":"2.0","method":"account_signTransaction","params":[{"from":"0x694267f14675d7e1b9494fd8d72fefe1755710fa","gas":"0x333","gasPrice":"0x1","nonce":"0x0","to":"0x07a565b7ed7d7a678680a4c162885bedbb695fe0", "value":"0x0", "data":"0x4401a6e40000000000000000000000000000000000000000000000000000000000000012"},"safeSend(address)"],"id":67}' http://localhost:8550/ {"jsonrpc":"2.0","id":67,"result":{"raw":"0xf88380018203339407a565b7ed7d7a678680a4c162885bedbb695fe080a44401a6e4000000000000000000000000000000000000000000000000000000000000001226a0223a7c9bcf5531c99be5ea7082183816eb20cfe0bbc322e97cc5c7f71ab8b20ea02aadee6b34b45bb15bc42d9c09de4a6754e7000908da72d48cc7704971491663","tx":{"nonce":"0x0","gasPrice":"0x1","gas":"0x333","to":"0x07a565b7ed7d7a678680a4c162885bedbb695fe0","value":"0x0","input":"0x4401a6e40000000000000000000000000000000000000000000000000000000000000012","v":"0x26","r":"0x223a7c9bcf5531c99be5ea7082183816eb20cfe0bbc322e97cc5c7f71ab8b20e","s":"0x2aadee6b34b45bb15bc42d9c09de4a6754e7000908da72d48cc7704971491663","hash":"0xeba2df809e7a612a0a0d444ccfa5c839624bdc00dd29e3340d46df3870f8a30e"}}} ``` ### account_signData #### Sign data Signs a chunk of data and returns the calculated signature. #### Arguments - content type [string]: type of signed data - `text/validator`: hex data with custom validator defined in a contract - `application/clique`: [clique](https://github.com/ethereum/EIPs/issues/225) headers - `text/plain`: simple hex data validated by `account_ecRecover` - account [address]: account to sign with - data [object]: data to sign #### Result - calculated signature [data] #### Sample call ```json { "id": 3, "jsonrpc": "2.0", "method": "account_signData", "params": [ "data/plain", "0x1923f626bb8dc025849e00f99c25fe2b2f7fb0db", "0xaabbccdd" ] } ``` Response ```json { "id": 3, "jsonrpc": "2.0", "result": "0x5b6693f153b48ec1c706ba4169960386dbaa6903e249cc79a8e6ddc434451d417e1e57327872c7f538beeb323c300afa9999a3d4a5de6caf3be0d5ef832b67ef1c" } ``` ### account_signTypedData #### Sign data Signs a chunk of structured data conformant to [EIP712]([EIP-712](https://github.com/ethereum/EIPs/blob/master/EIPS/eip-712.md)) and returns the calculated signature. #### Arguments - account [address]: account to sign with - data [object]: data to sign #### Result - calculated signature [data] #### Sample call ```json { "id": 68, "jsonrpc": "2.0", "method": "account_signTypedData", "params": [ "0xcd2a3d9f938e13cd947ec05abc7fe734df8dd826", { "types": { "EIP712Domain": [ { "name": "name", "type": "string" }, { "name": "version", "type": "string" }, { "name": "chainId", "type": "uint256" }, { "name": "verifyingContract", "type": "address" } ], "Person": [ { "name": "name", "type": "string" }, { "name": "wallet", "type": "address" } ], "Mail": [ { "name": "from", "type": "Person" }, { "name": "to", "type": "Person" }, { "name": "contents", "type": "string" } ] }, "primaryType": "Mail", "domain": { "name": "Ether Mail", "version": "1", "chainId": 1, "verifyingContract": "0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC" }, "message": { "from": { "name": "Cow", "wallet": "0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826" }, "to": { "name": "Bob", "wallet": "0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB" }, "contents": "Hello, Bob!" } } ] } ``` Response ```json { "id": 1, "jsonrpc": "2.0", "result": "0x4355c47d63924e8a72e509b65029052eb6c299d53a04e167c5775fd466751c9d07299936d304c153f6443dfa05f40ff007d72911b6f72307f996231605b915621c" } ``` ### account_ecRecover #### Sign data Derive the address from the account that was used to sign data with content type `text/plain` and the signature. #### Arguments - data [data]: data that was signed - signature [data]: the signature to verify #### Result - derived account [address] #### Sample call ```json { "id": 4, "jsonrpc": "2.0", "method": "account_ecRecover", "params": [ "data/plain", "0xaabbccdd", "0x5b6693f153b48ec1c706ba4169960386dbaa6903e249cc79a8e6ddc434451d417e1e57327872c7f538beeb323c300afa9999a3d4a5de6caf3be0d5ef832b67ef1c" ] } ``` Response ```json { "id": 4, "jsonrpc": "2.0", "result": "0x1923f626bb8dc025849e00f99c25fe2b2f7fb0db" } ``` ### account_import #### Import account Import a private key into the keystore. The imported key is expected to be encrypted according to the web3 keystore format. #### Arguments - account [object]: key in [web3 keystore format](https://github.com/ethereum/wiki/wiki/Web3-Secret-Storage-Definition) (retrieved with account_export) #### Result - imported key [object]: - key.address [address]: address of the imported key - key.type [string]: type of the account - key.url [string]: key URL #### Sample call ```json { "id": 6, "jsonrpc": "2.0", "method": "account_import", "params": [ { "address": "c7412fc59930fd90099c917a50e5f11d0934b2f5", "crypto": { "cipher": "aes-128-ctr", "cipherparams": { "iv": "401c39a7c7af0388491c3d3ecb39f532" }, "ciphertext": "eb045260b18dd35cd0e6d99ead52f8fa1e63a6b0af2d52a8de198e59ad783204", "kdf": "scrypt", "kdfparams": { "dklen": 32, "n": 262144, "p": 1, "r": 8, "salt": "9a657e3618527c9b5580ded60c12092e5038922667b7b76b906496f021bb841a" }, "mac": "880dc10bc06e9cec78eb9830aeb1e7a4a26b4c2c19615c94acb632992b952806" }, "id": "09bccb61-b8d3-4e93-bf4f-205a8194f0b9", "version": 3 } ] } ``` Response ```json { "id": 6, "jsonrpc": "2.0", "result": { "address": "0xc7412fc59930fd90099c917a50e5f11d0934b2f5", "type": "account", "url": "keystore:///tmp/keystore/UTC--2017-08-24T11-00-42.032024108Z--c7412fc59930fd90099c917a50e5f11d0934b2f5" } } ``` ### account_export #### Export account from keystore Export a private key from the keystore. The exported private key is encrypted with the original password. When the key is imported later this password is required. #### Arguments - account [address]: export private key that is associated with this account #### Result - exported key, see [web3 keystore format](https://github.com/ethereum/wiki/wiki/Web3-Secret-Storage-Definition) for more information #### Sample call ```json { "id": 5, "jsonrpc": "2.0", "method": "account_export", "params": [ "0xc7412fc59930fd90099c917a50e5f11d0934b2f5" ] } ``` Response ```json { "id": 5, "jsonrpc": "2.0", "result": { "address": "c7412fc59930fd90099c917a50e5f11d0934b2f5", "crypto": { "cipher": "aes-128-ctr", "cipherparams": { "iv": "401c39a7c7af0388491c3d3ecb39f532" }, "ciphertext": "eb045260b18dd35cd0e6d99ead52f8fa1e63a6b0af2d52a8de198e59ad783204", "kdf": "scrypt", "kdfparams": { "dklen": 32, "n": 262144, "p": 1, "r": 8, "salt": "9a657e3618527c9b5580ded60c12092e5038922667b7b76b906496f021bb841a" }, "mac": "880dc10bc06e9cec78eb9830aeb1e7a4a26b4c2c19615c94acb632992b952806" }, "id": "09bccb61-b8d3-4e93-bf4f-205a8194f0b9", "version": 3 } } ``` ## UI API These methods needs to be implemented by a UI listener. By starting the signer with the switch `--stdio-ui-test`, the signer will invoke all known methods, and expect the UI to respond with denials. This can be used during development to ensure that the API is (at least somewhat) correctly implemented. See `pythonsigner`, which can be invoked via `python3 pythonsigner.py test` to perform the 'denial-handshake-test'. All methods in this API uses object-based parameters, so that there can be no mixups of parameters: each piece of data is accessed by key. See the [ui API changelog](intapi_changelog.md) for information about changes to this API. OBS! A slight deviation from `json` standard is in place: every request and response should be confined to a single line. Whereas the `json` specification allows for linebreaks, linebreaks __should not__ be used in this communication channel, to make things simpler for both parties. ### ApproveTx / `ui_approveTx` Invoked when there's a transaction for approval. #### Sample call Here's a method invocation: ```bash curl -i -H "Content-Type: application/json" -X POST --data '{"jsonrpc":"2.0","method":"account_signTransaction","params":[{"from":"0x694267f14675d7e1b9494fd8d72fefe1755710fa","gas":"0x333","gasPrice":"0x1","nonce":"0x0","to":"0x07a565b7ed7d7a678680a4c162885bedbb695fe0", "value":"0x0", "data":"0x4401a6e40000000000000000000000000000000000000000000000000000000000000012"},"safeSend(address)"],"id":67}' http://localhost:8550/ ``` Results in the following invocation on the UI: ```json { "jsonrpc": "2.0", "id": 1, "method": "ui_approveTx", "params": [ { "transaction": { "from": "0x0x694267f14675d7e1b9494fd8d72fefe1755710fa", "to": "0x0x07a565b7ed7d7a678680a4c162885bedbb695fe0", "gas": "0x333", "gasPrice": "0x1", "value": "0x0", "nonce": "0x0", "data": "0x4401a6e40000000000000000000000000000000000000000000000000000000000000012", "input": null }, "call_info": [ { "type": "WARNING", "message": "Invalid checksum on to-address" }, { "type": "Info", "message": "safeSend(address: 0x0000000000000000000000000000000000000012)" } ], "meta": { "remote": "127.0.0.1:48486", "local": "localhost:8550", "scheme": "HTTP/1.1" } } ] } ``` The same method invocation, but with invalid data: ```bash curl -i -H "Content-Type: application/json" -X POST --data '{"jsonrpc":"2.0","method":"account_signTransaction","params":[{"from":"0x694267f14675d7e1b9494fd8d72fefe1755710fa","gas":"0x333","gasPrice":"0x1","nonce":"0x0","to":"0x07a565b7ed7d7a678680a4c162885bedbb695fe0", "value":"0x0", "data":"0x4401a6e40000000000000002000000000000000000000000000000000000000000000012"},"safeSend(address)"],"id":67}' http://localhost:8550/ ``` ```json { "jsonrpc": "2.0", "id": 1, "method": "ui_approveTx", "params": [ { "transaction": { "from": "0x0x694267f14675d7e1b9494fd8d72fefe1755710fa", "to": "0x0x07a565b7ed7d7a678680a4c162885bedbb695fe0", "gas": "0x333", "gasPrice": "0x1", "value": "0x0", "nonce": "0x0", "data": "0x4401a6e40000000000000002000000000000000000000000000000000000000000000012", "input": null }, "call_info": [ { "type": "WARNING", "message": "Invalid checksum on to-address" }, { "type": "WARNING", "message": "Transaction data did not match ABI-interface: WARNING: Supplied data is stuffed with extra data. \nWant 0000000000000002000000000000000000000000000000000000000000000012\nHave 0000000000000000000000000000000000000000000000000000000000000012\nfor method safeSend(address)" } ], "meta": { "remote": "127.0.0.1:48492", "local": "localhost:8550", "scheme": "HTTP/1.1" } } ] } ``` One which has missing `to`, but with no `data`: ```json { "jsonrpc": "2.0", "id": 3, "method": "ui_approveTx", "params": [ { "transaction": { "from": "", "to": null, "gas": "0x0", "gasPrice": "0x0", "value": "0x0", "nonce": "0x0", "data": null, "input": null }, "call_info": [ { "type": "CRITICAL", "message": "Tx will create contract with empty code!" } ], "meta": { "remote": "signer binary", "local": "main", "scheme": "in-proc" } } ] } ``` ### ApproveListing / `ui_approveListing` Invoked when a request for account listing has been made. #### Sample call ```json { "jsonrpc": "2.0", "id": 5, "method": "ui_approveListing", "params": [ { "accounts": [ { "type": "Account", "url": "keystore:///home/bazonk/.ethereum/keystore/UTC--2017-11-20T14-44-54.089682944Z--123409812340981234098123409812deadbeef42", "address": "0x123409812340981234098123409812deadbeef42" }, { "type": "Account", "url": "keystore:///home/bazonk/.ethereum/keystore/UTC--2017-11-23T21-59-03.199240693Z--cafebabedeadbeef34098123409812deadbeef42", "address": "0xcafebabedeadbeef34098123409812deadbeef42" } ], "meta": { "remote": "signer binary", "local": "main", "scheme": "in-proc" } } ] } ``` ### ApproveSignData / `ui_approveSignData` #### Sample call ```json { "jsonrpc": "2.0", "id": 4, "method": "ui_approveSignData", "params": [ { "address": "0x123409812340981234098123409812deadbeef42", "raw_data": "0x01020304", "message": "\u0019Ethereum Signed Message:\n4\u0001\u0002\u0003\u0004", "hash": "0x7e3a4e7a9d1744bc5c675c25e1234ca8ed9162bd17f78b9085e48047c15ac310", "meta": { "remote": "signer binary", "local": "main", "scheme": "in-proc" } } ] } ``` ### ShowInfo / `ui_showInfo` The UI should show the info to the user. Does not expect response. #### Sample call ```json { "jsonrpc": "2.0", "id": 9, "method": "ui_showInfo", "params": [ { "text": "Tests completed" } ] } ``` ### ShowError / `ui_showError` The UI should show the info to the user. Does not expect response. ```json { "jsonrpc": "2.0", "id": 2, "method": "ShowError", "params": [ { "text": "Testing 'ShowError'" } ] } ``` ### OnApprovedTx / `ui_onApprovedTx` `OnApprovedTx` is called when a transaction has been approved and signed. The call contains the return value that will be sent to the external caller. The return value from this method is ignored - the reason for having this callback is to allow the ruleset to keep track of approved transactions. When implementing rate-limited rules, this callback should be used. TLDR; Use this method to keep track of signed transactions, instead of using the data in `ApproveTx`. ### OnSignerStartup / `ui_onSignerStartup` This method provide the UI with information about what API version the signer uses (both internal and external) aswell as build-info and external API, in k/v-form. Example call: ```json { "jsonrpc": "2.0", "id": 1, "method": "ui_onSignerStartup", "params": [ { "info": { "extapi_http": "http://localhost:8550", "extapi_ipc": null, "extapi_version": "2.0.0", "intapi_version": "1.2.0" } } ] } ``` ### Rules for UI apis A UI should conform to the following rules. * A UI MUST NOT load any external resources that were not embedded/part of the UI package. * For example, not load icons, stylesheets from the internet * Not load files from the filesystem, unless they reside in the same local directory (e.g. config files) * A Graphical UI MUST show the blocky-identicon for ethereum addresses. * A UI MUST warn display appropriate warning if the destination-account is formatted with invalid checksum. * A UI MUST NOT open any ports or services * The signer opens the public port * A UI SHOULD verify the permissions on the signer binary, and refuse to execute or warn if permissions allow non-user write. * A UI SHOULD inform the user about the `SHA256` or `MD5` hash of the binary being executed * A UI SHOULD NOT maintain a secondary storage of data, e.g. list of accounts * The signer provides accounts * A UI SHOULD, to the best extent possible, use static linking / bundling, so that required libraries are bundled along with the UI. ### UI Implementations There are a couple of implementation for a UI. We'll try to keep this list up to date. | Name | Repo | UI type| No external resources| Blocky support| Verifies permissions | Hash information | No secondary storage | Statically linked| Can modify parameters| | ---- | ---- | -------| ---- | ---- | ---- |---- | ---- | ---- | ---- | | QtSigner| https://github.com/holiman/qtsigner/| Python3/QT-based| :+1:| :+1:| :+1:| :+1:| :+1:| :x: | :+1: (partially)| | GtkSigner| https://github.com/holiman/gtksigner| Python3/GTK-based| :+1:| :x:| :x:| :+1:| :+1:| :x: | :x: | | Frame | https://github.com/floating/frame/commits/go-signer| Electron-based| :x:| :x:| :x:| :x:| ?| :x: | :x: | | Clef UI| https://github.com/kyokan/clef-ui| Golang/QT-based| :+1:| :+1:| :x:| :+1:| :+1:| :x: | :+1: (approve tx only)| # Changesets Hello and welcome! This folder has been automatically generated by `@changesets/cli`, a build tool that works with multi-package repos, or single-package repos to help you version and publish your code. You can find the full documentation for it [in our repository](https://github.com/changesets/changesets) We have a quick list of common questions to get you started engaging with this project in [our documentation](https://github.com/changesets/changesets/blob/main/docs/common-questions.md)  # log15 [](https://godoc.org/github.com/inconshreveable/log15) [](https://travis-ci.org/inconshreveable/log15) Package log15 provides an opinionated, simple toolkit for best-practice logging in Go (golang) that is both human and machine readable. It is modeled after the Go standard library's [`io`](https://golang.org/pkg/io/) and [`net/http`](https://golang.org/pkg/net/http/) packages and is an alternative to the standard library's [`log`](https://golang.org/pkg/log/) package. ## Features - A simple, easy-to-understand API - Promotes structured logging by encouraging use of key/value pairs - Child loggers which inherit and add their own private context - Lazy evaluation of expensive operations - Simple Handler interface allowing for construction of flexible, custom logging configurations with a tiny API. - Color terminal support - Built-in support for logging to files, streams, syslog, and the network - Support for forking records to multiple handlers, buffering records for output, failing over from failed handler writes, + more ## Versioning The API of the master branch of log15 should always be considered unstable. If you want to rely on a stable API, you must vendor the library. ## Importing ```go import log "github.com/inconshreveable/log15" ``` ## Examples ```go // all loggers can have key/value context srvlog := log.New("module", "app/server") // all log messages can have key/value context srvlog.Warn("abnormal conn rate", "rate", curRate, "low", lowRate, "high", highRate) // child loggers with inherited context connlog := srvlog.New("raddr", c.RemoteAddr()) connlog.Info("connection open") // lazy evaluation connlog.Debug("ping remote", "latency", log.Lazy{pingRemote}) // flexible configuration srvlog.SetHandler(log.MultiHandler( log.StreamHandler(os.Stderr, log.LogfmtFormat()), log.LvlFilterHandler( log.LvlError, log.Must.FileHandler("errors.json", log.JSONFormat())))) ``` Will result in output that looks like this: ``` WARN[06-17|21:58:10] abnormal conn rate module=app/server rate=0.500 low=0.100 high=0.800 INFO[06-17|21:58:10] connection open module=app/server raddr=10.0.0.1 ``` ## Breaking API Changes The following commits broke API stability. This reference is intended to help you understand the consequences of updating to a newer version of log15. - 57a084d014d4150152b19e4e531399a7145d1540 - Added a `Get()` method to the `Logger` interface to retrieve the current handler - 93404652ee366648fa622b64d1e2b67d75a3094a - `Record` field `Call` changed to `stack.Call` with switch to `github.com/go-stack/stack` - a5e7613673c73281f58e15a87d2cf0cf111e8152 - Restored `syslog.Priority` argument to the `SyslogXxx` handler constructors ## FAQ ### The varargs style is brittle and error prone! Can I have type safety please? Yes. Use `log.Ctx`: ```go srvlog := log.New(log.Ctx{"module": "app/server"}) srvlog.Warn("abnormal conn rate", log.Ctx{"rate": curRate, "low": lowRate, "high": highRate}) ``` ## License Apache # testlog `github.com/ethereum/go-ethereum/internal/testlog`: a Go-ethereum util for logging in tests. Since we use the same logging, but as an external package, we have to move the test utility to our own internal package. This fork also made minor modifications: - Enable color by default. - Add `estimateInfoLen` and use this for message padding in `flush()` to align the contents of the log entries, compensating for the different lengths of the log decoration that the Go library adds. # The OP Stack Docs [](https://discord.gg/optimism) [](https://twitter.com/optimismPBC) The OP Stack is an open, collectively maintained development stack for blockchain ecosystems. This repository contains the source code for the [OP Stack Docs](https://stack.optimism.io). ## Development ### Serving docs locally ```sh yarn dev ``` Then navigate to [http://localhost:8080](http://localhost:8080). If that link doesn't work, double check the output of `yarn dev`. You might already be serving something on port 8080 and the site may be on another port (e.g., 8081). ### Building docs for production ```sh yarn build ``` You probably don't need to run this command, but now you know. ### Editing docs Edit the markdown directly in [src/docs](./src/docs). ### Adding new docs Add your markdown files to [src/docs](./src/docs). You will also have to update [src/.vuepress/config.js](./src/.vuepress/config.js) if you want these docs to show up in the sidebar. ### Updating the theme We currently use an ejected version of [vuepress-theme-hope](https://vuepress-theme-hope.github.io/). Since the version we use was ejected from the original theme, you'll see a bunch of compiled JavaScript files instead of the original TypeScript files. There's not much we can do about that right now, so you'll just need to make do and edit the raw JS if you need to make theme adjustments. We're planning to move away from VuePress relatively soon anyway so we won't be fixing this. <div align="center"> <br /> <br /> <a href="https://optimism.io"><img alt="Optimism" src="https://raw.githubusercontent.com/ethereum-optimism/brand-kit/main/assets/svg/OPTIMISM-R.svg" width=600></a> <br /> <h3>@eth-optimism/atst</h3> The official SDK and cli for Optimism's attestation Station <br /> </div> <p align="center"> <p> <a href="https://www.npmjs.com/package/@eth-optimism/atst" target="\_parent"> <img alt="" src="https://img.shields.io/npm/dm/@eth-optimism/atst.svg" /> </a> # atst atst is a typescript / javascript sdk and cli around AttestationStation **Visit [Docs](https://community.optimism.io/docs/governance/attestation-station/) for general documentation on AttestationStation.** ## Getting started Install ```bash npm install @eth-optimism/atst wagmi @wagmi/core ethers@5.7.0 ``` ## atst typescript/javascript sdk The typescript sdk provides a clean [wagmi](https://wagmi.sh/) based interface for reading and writing to AttestationStation. **See [sdk docs](https://github.com/ethereum-optimism/optimism/blob/develop/packages/atst/docs/sdk.md) for usage instructions.** ## atst cli The cli provides a convenient cli for interacting with the AttestationStation contract  **See [cli docs](https://github.com/ethereum-optimism/optimism/blob/develop/packages/atst/docs/cli.md) for usage instructions.** ## React API For react hooks we recomend using the [wagmi cli](https://wagmi.sh/cli/getting-started) with the [etherscan plugin](https://wagmi.sh/cli/plugins/etherscan) and [react plugin](https://wagmi.sh/cli/plugins/react) to automatically generate react hooks around AttestationStation. Use `createKey` and `createValue` to convert your raw keys and values into bytes that can be used in AttestationStation contract calls Use `parseString`, `parseBool`, `parseAddress` and `parseNumber` to convert values returned by AttestationStation to their correct data type. For convenience we also [export the hooks here](https://github.com/ethereum-optimism/optimism/blob/develop/packages/atst/src/index.ts): - `useAttestationStationAttestation` - Reads attestations with useContractRead - `useAttestationStationVersion` - Reads attestation version - `useAttestationStationAttest` - Wraps useContractWrite with AttestationStation abi calling attest - `usePrepareAttestationStationAttest` - Wraps usePrepare with AttestationStation abi calling attest - `useAttestationStationAttestationCreatedEvent` - Wraps useContractEvents for Created events Also some more hooks exported by the cli but these are likely the only ones you need. ## Contributing Please see our [contributing.md](https://github.com/ethereum-optimism/optimism/blob/develop/CONTRIBUTING.md). No contribution is too small. Having your contribution denied feels bad. Please consider [opening an issue](https://github.com/ethereum-optimism/optimism/issues) before adding any new features or apis. ## Getting help If you have any problems, these resources could help you: - [sdk documentation](https://github.com/ethereum-optimism/optimism/blob/develop/packages/atst/docs/sdk.md) - [cli documentation](https://github.com/ethereum-optimism/optimism/blob/develop/packages/atst/docs/cli.md) - [Optimism Discord](https://discord.gg/optimism) - [Telegram group](https://t.me/+zwpJ8Ohqgl8yNjNh) --- title: Building with the OP Stack lang: en-US --- The OP Stack is the decentralized development stack that powers Optimism. The current release of the OP Stack (named “Bedrock”) was designed to facilitate the creation of L2 blockchains that can interoperate with the proposed [Optimism Superchain](https://app.optimism.io/superchain/). The Superchain is a proposed network of rollups that share a security model, communication protocols, and a common development stack (the OP Stack itself). **The best way to get started building with the OP Stack today is to launch your own Bedrock-based Rollup by following our guide to [Running a Bedrock Rollup](./getting-started.md)**. Bedrock Rollups will be compatible with the Superchain. You can also experiment with the OP Stack by making modifications to its various components. The OP Stack, as of the Bedrock release, is not explicitly designed to handle any significant modifications out of the box. By modifying the components of the OP Stack, you will likely no longer be compatible with the Superchain. Please also note that there is limited developer support available for modifications to the OP Stack. Have fun, but modify the stack at your own risk! # @eth-optimism/chain-mon [](https://codecov.io/gh/ethereum-optimism/optimism) `chain-mon` is a collection of chain monitoring services. ## Installation Clone, install, and build the Optimism monorepo: ``` git clone https://github.com/ethereum-optimism/optimism.git yarn install yarn build ``` ## Running a service Copy `.env.example` into a new file named `.env`, then set the environment variables listed there depending on the service you want to run. Once your environment variables have been set, run via: ``` yarn start:<service name> ``` For example, to run `drippie-mon`, execute: ``` yarn start:drippie-mon ``` OP x Celestia: ============== This package defines a generic interface to encode/decode the `FrameRef` i.e. a reference to the Frame data submitted by `op-batcher` to the batch inbox address. `op-batcher` and `op-node` need to be updated to use the new `FrameRef` instead: in `calldata_source.go` `DataFromEVMTransactions` out = append(out, tx.Data()) becomes frameRef := celestia.FrameRef{} frameRef.UnmarshalBinary(tx.Data()) if err != nil { log.Warn("unable to decode frame reference", "index", j, "err", err) return nil, err } log.Info("requesting data from celestia", "namespace", hex.EncodeToString(daCfg.Namespace), "height", frameRef.BlockHeight) blob, err := daCfg.Client.Blob.Get(context.Background(), frameRef.BlockHeight, daCfg.Namespace, frameRef.TxCommitment) if err != nil { return nil, NewResetError(fmt.Errorf("failed to resolve frame from celestia: %w", err)) } out = append(out, blob.Data) in `txmgr/txmgr.go`: tx, err := m.craftTx(ctx, candidate) becomes dataBlob, err := blob.NewBlobV0(m.namespace.Bytes(), candidate.TxData) com, err := blob.CreateCommitment(dataBlob) if err != nil { m.l.Warn("unable to create blob commitment to celestia", "err", err) return nil, err } height, err := m.daClient.Blob.Submit(ctx, []*blob.Blob{dataBlob}) if err != nil { m.l.Warn("unable to publish tx to celestia", "err", err) return nil, err } if height == 0 { m.l.Warn("unexpected response from celestia got", "height", height) return nil, errors.New("unexpected response code") } frameRef := celestia.FrameRef{ BlockHeight: height, TxCommitment: com, } frameRefData, _ := frameRef.MarshalBinary() candidate = TxCandidate{TxData: frameRefData, To: candidate.To, GasLimit: candidate.GasLimit} # Optimism Smart Contracts (Bedrock) [](https://codecov.io/gh/ethereum-optimism/optimism) This package contains the smart contracts that compose the on-chain component of Optimism's upcoming Bedrock upgrade. We've tried to maintain 100% backwards compatibility with the existing system while also introducing new useful features. You can find detailed specifications for the contracts contained within this package [here](../../specs). ## Contracts Overview ### Contracts deployed to L1 | Name | Proxy Type | Description | | ---------------------------------------------------------------------------------------- | ----------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------- | | [`L1CrossDomainMessenger`](../../specs/messengers.md) | [`ResolvedDelegateProxy`](./contracts/legacy/ResolvedDelegateProxy.sol) | High-level interface for sending messages to and receiving messages from Optimism | | [`L1StandardBridge`](../../specs/bridges.md) | [`L1ChugSplashProxy`](./contracts/legacy/L1ChugSplashProxy.sol) | Standardized system for transfering ERC20 tokens to/from Optimism | | [`L2OutputOracle`](../../specs/proposals.md#l2-output-oracle-smart-contract) | [`Proxy`](./contracts/universal/Proxy.sol) | Stores commitments to the state of Optimism which can be used by contracts on L1 to access L2 state | | [`OptimismPortal`](../../specs/deposits.md#deposit-contract) | [`Proxy`](./contracts/universal/Proxy.sol) | Low-level message passing interface | | [`OptimismMintableERC20Factory`](../../specs/predeploys.md#optimismmintableerc20factory) | [`Proxy`](./contracts/universal/Proxy.sol) | Deploys standard `OptimismMintableERC20` tokens that are compatible with either `StandardBridge` | | [`ProxyAdmin`](../../specs/TODO) | - | Contract that can upgrade L1 contracts | ### Contracts deployed to L2 | Name | Proxy Type | Description | | ---------------------------------------------------------------------------------------- | ------------------------------------------ | ------------------------------------------------------------------------------------------------ | | [`GasPriceOracle`](../../specs/predeploys.md#ovm_gaspriceoracle) | [`Proxy`](./contracts/universal/Proxy.sol) | Stores L2 gas price configuration values | | [`L1Block`](../../specs/predeploys.md#l1block) | [`Proxy`](./contracts/universal/Proxy.sol) | Stores L1 block context information (e.g., latest known L1 block hash) | | [`L2CrossDomainMessenger`](../../specs/predeploys.md#l2crossdomainmessenger) | [`Proxy`](./contracts/universal/Proxy.sol) | High-level interface for sending messages to and receiving messages from L1 | | [`L2StandardBridge`](../../specs/predeploys.md#l2standardbridge) | [`Proxy`](./contracts/universal/Proxy.sol) | Standardized system for transferring ERC20 tokens to/from L1 | | [`L2ToL1MessagePasser`](../../specs/predeploys.md#ovm_l2tol1messagepasser) | [`Proxy`](./contracts/universal/Proxy.sol) | Low-level message passing interface | | [`SequencerFeeVault`](../../specs/predeploys.md#sequencerfeevault) | [`Proxy`](./contracts/universal/Proxy.sol) | Vault for L2 transaction fees | | [`OptimismMintableERC20Factory`](../../specs/predeploys.md#optimismmintableerc20factory) | [`Proxy`](./contracts/universal/Proxy.sol) | Deploys standard `OptimismMintableERC20` tokens that are compatible with either `StandardBridge` | | [`L2ProxyAdmin`](../../specs/TODO) | - | Contract that can upgrade L2 contracts when sent a transaction from L1 | ### Legacy and deprecated contracts | Name | Location | Proxy Type | Description | | --------------------------------------------------------------- | -------- | ------------------------------------------ | ------------------------------------------------------------------------------------- | | [`AddressManager`](./contracts/legacy/AddressManager.sol) | L1 | - | Legacy upgrade mechanism (unused in Bedrock) | | [`DeployerWhitelist`](./contracts/legacy/DeployerWhitelist.sol) | L2 | [`Proxy`](./contracts/universal/Proxy.sol) | Legacy contract for managing allowed deployers (unused since EVM Equivalence upgrade) | | [`L1BlockNumber`](./contracts/legacy/L1BlockNumber.sol) | L2 | [`Proxy`](./contracts/universal/Proxy.sol) | Legacy contract for accessing latest known L1 block number, replaced by `L1Block` | ## Installation We export contract ABIs, contract source code, and contract deployment information for this package via `npm`: ```shell npm install @eth-optimism/contracts-bedrock ``` ## Development ### Dependencies We work on this repository with a combination of [Hardhat](https://hardhat.org) and [Foundry](https://getfoundry.sh/). 1. Install Foundry by following [the instructions located here](https://getfoundry.sh/). A specific version must be used. ```shell foundryup -C da2392e58bb8a7fefeba46b40c4df1afad8ccd22 ``` 2. Install node modules with yarn (v1) and Node.js (16+): ```shell yarn install ``` ### Build ```shell yarn build ``` ### Tests ```shell yarn test ``` #### Running Echidna tests You must have [Echidna](https://github.com/crytic/echidna) installed. Contracts targetted for Echidna testing are located in `./contracts/echidna` Each target contract is tested with a separate yarn command, for example: ```shell yarn echidna:aliasing ``` ### Deployment #### Configuration 1. Create or modify a file `<network-name>.ts` inside of the [`deploy-config`](./deploy-config/) folder. 2. Fill out this file according to the `deployConfigSpec` located inside of the [`hardhat.config.ts](./hardhat.config.ts) 3. Optionally: Run `npx hardhat generate-deploy-config --network <network-name>` to generate the associated JSON file. This is required if using `op-chain-ops`. #### Execution 1. Copy `.env.example` into `.env` 2. Fill out the `L1_RPC` and `PRIVATE_KEY_DEPLOYER` environment variables in `.env` 3. Run `npx hardhat deploy --network <network-name>` to deploy the L1 contracts 4. Run `npx hardhat etherscan-verify --network <network-name> --sleep` to verify contracts on Etherscan ## Tools ### Layout Locking We use a system called "layout locking" as a safety mechanism to prevent certain contract variables from being moved to different storage slots accidentally. To lock a contract variable, add it to the `layout-lock.json` file which has the following format: ```json { "MyContractName": { "myVariableName": { "slot": 1, "offset": 0, "length": 32 } } } ``` With the above config, the `validate-spacers` hardhat task will check that we have a contract called `MyContractName`, that the contract has a variable named `myVariableName`, and that the variable is in the correct position as defined in the lock file. You should add things to the `layout-lock.json` file when you want those variables to **never** change. Layout locking should be used in combination with diffing the `.storage-layout` file in CI. ## Standards and Conventions ### Style #### Comments We use [Seaport](https://github.com/ProjectOpenSea/seaport/blob/main/contracts/Seaport.sol)-style comments with some minor modifications. Some basic rules: - Always use `@notice` since it has the same general effect as `@dev` but avoids confusion about when to use one over the other. - Include a newline between `@notice` and the first `@param`. - Include a newline between `@param` and the first `@return`. - Use a line-length of 100 characters. We also have the following custom tags: - `@custom:proxied`: Add to a contract whenever it's meant to live behind a proxy. - `@custom:upgradeable`: Add to a contract whenever it's meant to be used in an upgradeable contract. - `@custom:semver`: Add to a constructor to indicate the version of a contract. - `@custom:legacy`: Add to an event or function when it only exists for legacy support. #### Errors - Use `require` statements when making simple assertions. - Use `revert` if throwing an error where an assertion is not being made (no custom errors). See [here](https://github.com/ethereum-optimism/optimism/blob/861ae315a6db698a8c0adb1f8eab8311fd96be4c/packages/contracts-bedrock/contracts/L2/OVM_ETH.sol#L31) for an example of this in practice. - Error strings MUST have the format `"{ContractName}: {message}"` where `message` is a lower case string. #### Function Parameters - Function parameters should be prefixed with an underscore. #### Event Parameters - Event parameters should NOT be prefixed with an underscore. #### Spacers We use spacer variables to account for old storage slots that are no longer being used. The name of a spacer variable MUST be in the format `spacer_<slot>_<offset>_<length>` where `<slot>` is the original storage slot number, `<offset>` is the original offset position within the storage slot, and `<length>` is the original size of the variable. Spacers MUST be `private`. ### Proxy by Default All contracts should be assumed to live behind proxies (except in certain special circumstances). This means that new contracts MUST be built under the assumption of upgradeability. We use a minimal [`Proxy`](./contracts/universal/Proxy.sol) contract designed to be owned by a corresponding [`ProxyAdmin`](./contracts/universal/ProxyAdmin.sol) which follow the interfaces of OpenZeppelin's `Proxy` and `ProxyAdmin` contracts, respectively. Unless explicitly discussed otherwise, you MUST include the following basic upgradeability pattern for each new implementation contract: 1. Extend OpenZeppelin's `Initializable` base contract. 2. Include a `uint8 public constant VERSION = X` at the TOP of your contract. 3. Include a function `initialize` with the modifier `reinitializer(VERSION)`. 4. In the `constructor`, set any `immutable` variables and call the `initialize` function for setting mutables. ### Versioning All (non-library and non-abstract) contracts MUST extend the `Semver` base contract which exposes a `version()` function that returns a semver-compliant version string. During the Bedrock development process the `Semver` value for all contracts SHOULD return `0.0.1` (this is not particularly important, but it's an easy standard to follow). When the initial Bedrock upgrade is released, the `Semver` value MUST be updated to `1.0.0`. After the initial Bedrock upgrade, contracts MUST use the following versioning scheme: - `patch` releases are to be used only for changes that do NOT modify contract bytecode (such as updating comments). - `minor` releases are to be used for changes that modify bytecode OR changes that expand the contract ABI provided that these changes do NOT break the existing interface. - `major` releases are to be used for changes that break the existing contract interface OR changes that modify the security model of a contract. #### Exceptions We have made an exception to the `Semver` rule for the `WETH` contract to avoid making changes to a well-known, simple, and recognizable contract. ### Dependencies Where basic functionality is already supported by an existing contract in the OpenZeppelin library, we should default to using the Upgradeable version of that contract. ### Tests Tests are written using Foundry. All test contracts and functions should be organized and named according to the following guidelines. These guidelines are also encoded in a script which can be run with: ``` ts-node scripts/forge-test-names.ts ``` _Note: This is a work in progress, not all test files are compliant with these guidelines._ #### Organizing Principles - Solidity `contract`s are used to organize the test suite similar to how mocha uses describe. - Every non-trivial state changing function should have a separate contract for happy and sad path tests. This helps to make it very obvious where there are not yet sad path tests. - Simpler functions like getters and setters are grouped together into test contracts. #### Test function naming convention Test function names are split by underscores, into 3 or 4 parts. An example function name is `test_onlyOwner_callerIsNotOwner_reverts()`. The parts are: `[method]_[FunctionName]_[reason]_[success]`, where: - `[method]` is either `test`, `testFuzz`, or `testDiff` - `[FunctionName]` is the name of the function or higher level behavior being tested. - `[reason]` is an optional description for the behavior being tested. - `[status]` must be one of: - `succeeds`: used for most happy path cases - `reverts`: used for most sad path cases - `works`: used for tests which include a mix of happy and sad assertions (these should be broken up if possible) - `fails`: used for tests which 'fail' in some way other than reverting - `benchmark`: used for tests intended to establish gas costs #### Contract Naming Conventions Test contracts should be named one of the following according to their use: - `TargetContract_Init` for contracts that perform basic setup to be reused in other test contracts. - `TargetContract_Function_Test` for contracts containing happy path tests for a given function. - `TargetContract_Function_TestFail` for contracts containing sad path tests for a given function. ## Withdrawaing From Fee Vaults See the file `scripts/FeeVaultWithdrawal.s.sol` to withdraw from the L2 fee vaults. It includes instructions on how to run it. `foundry` is required. # op-signer op-signer service client # op-bindings This package contains built go bindings of the smart contracts. It must be updated after any changes to the smart contracts to ensure that the bindings are up to date. The bindings include the bytecode for each contract so that go based tests can deploy the contracts. There are also `more` files that include the deployed bytecode as well as the storage layout. These are used to dynamically set bytecode and storage slots in state. ## Dependencies - `abigen` version 1.10.25 - `make` To check the version of `abigen`, run the command `abigen --version`. ## abigen The `abigen` tool is part of `go-ethereum` and can be used to build go bindings for smart contracts. It can be installed with go using the commands: ```bash $ go get -u github.com/ethereum/go-ethereum $ cd $GOPATH/src/github.com/ethereum/go-ethereum/ $ make devtools ``` The geth docs for `abigen` can be found [here](https://geth.ethereum.org/docs/dapp/native-bindings). # @eth-optimism/core-utils [](https://codecov.io/gh/ethereum-optimism/optimism) ## What is this? `@eth-optimism/core-utils` contains the Optimistic Virtual Machine core utilities. ## Getting started ### Building and usage After cloning and switching to the repository, install dependencies: ```bash $ yarn ``` Use the following commands to build, use, test, and lint: ```bash $ yarn build $ yarn start $ yarn test $ yarn lint ``` ### L2 Fees `TxGasLimit` can be used to `encode` and `decode` the L2 Gas Limit locally. ```typescript import { TxGasLimit } from '@eth-optimism/core-utils' import { JsonRpcProvider } from 'ethers' const L2Provider = new JsonRpcProvider('https://mainnet.optimism.io') const L1Provider = new JsonRpcProvider('http://127.0.0.1:8545') const l2GasLimit = await L2Provider.send('eth_estimateExecutionGas', [tx]) const l1GasPrice = await L1Provider.getGasPrice() const encoded = TxGasLimit.encode({ data: '0x', l1GasPrice, l2GasLimit, l2GasPrice: 10000000, }) const decoded = TxGasLimit.decode(encoded) assert(decoded.eq(gasLimit)) const estimate = await L2Provider.estimateGas() assert(estimate.eq(encoded)) ``` # devp2p simulation examples ## ping-pong `ping-pong.go` implements a simulation network which contains nodes running a simple "ping-pong" protocol where nodes send a ping message to all their connected peers every 10s and receive pong messages in return. To run the simulation, run `go run ping-pong.go` in one terminal to start the simulation API and `./ping-pong.sh` in another to start and connect the nodes: ``` $ go run ping-pong.go INFO [08-15|13:53:49] using sim adapter INFO [08-15|13:53:49] starting simulation server on 0.0.0.0:8888... ``` ``` $ ./ping-pong.sh ---> 13:58:12 creating 10 nodes Created node01 Started node01 ... Created node10 Started node10 ---> 13:58:13 connecting node01 to all other nodes Connected node01 to node02 ... Connected node01 to node10 ---> 13:58:14 done ``` Use the `--adapter` flag to choose the adapter type: ``` $ go run ping-pong.go --adapter exec INFO [08-15|14:01:14] using exec adapter tmpdir=/var/folders/k6/wpsgfg4n23ddbc6f5cnw5qg00000gn/T/p2p-example992833779 INFO [08-15|14:01:14] starting simulation server on 0.0.0.0:8888... ``` # gas-oracle This service is responsible for sending transactions to the Sequencer to update the L2 gas price over time. It consists of a set of functions found in the `gasprices` package that define the parameters of how the gas prices are updated and then the `oracle` package is responsible for observing the Sequencer over time and send transactions that actually do update the gas prices. ### Generating the Bindings Note: this only needs to happen if the ABI of the `OVM_GasPriceOracle` is updated. This project uses `abigen` to automatically create smart contract bindings in Go. To generate the bindings, be sure that the latest ABI and bytecode are committed into the repository in the `abis` directory. Use the following command to generate the bindings: ```bash $ make binding ``` Be sure to use `abigen` built with the same version of `go-ethereum` as what is in the `go.mod` file. ### Building the service The service can be built with the `Makefile`. A binary will be produced called the `gas-oracle`. ```bash $ make gas-oracle ``` ### Running the service Use the `--help` flag when running the `gas-oracle` to see it's configuration options. ``` NAME: gas-oracle - Remotely Control the Optimism Gas Price USAGE: gas-oracle [global options] command [command options] [arguments...] VERSION: 0.0.0-1.10.4-stable DESCRIPTION: Configure with a private key and an Optimism HTTP endpoint to send transactions that update the L2 gas price. COMMANDS: help, h Shows a list of commands or help for one command GLOBAL OPTIONS: --ethereum-http-url value Sequencer HTTP Endpoint (default: "http://127.0.0.1:8545") [$GAS_PRICE_ORACLE_ETHEREUM_HTTP_URL] --chain-id value L2 Chain ID (default: 0) [$GAS_PRICE_ORACLE_CHAIN_ID] --gas-price-oracle-address value Address of OVM_GasPriceOracle (default: "0x420000000000000000000000000000000000000F") [$GAS_PRICE_ORACLE_GAS_PRICE_ORACLE_ADDRESS] --private-key value Private Key corresponding to OVM_GasPriceOracle Owner [$GAS_PRICE_ORACLE_PRIVATE_KEY] --transaction-gas-price value Hardcoded tx.gasPrice, not setting it uses gas estimation (default: 0) [$GAS_PRICE_ORACLE_TRANSACTION_GAS_PRICE] --loglevel value log level to emit to the screen (default: 3) [$GAS_PRICE_ORACLE_LOG_LEVEL] --floor-price value gas price floor (default: 1) [$GAS_PRICE_ORACLE_FLOOR_PRICE] --target-gas-per-second value target gas per second (default: 11000000) [$GAS_PRICE_ORACLE_TARGET_GAS_PER_SECOND] --max-percent-change-per-epoch value max percent change of gas price per second (default: 0.1) [$GAS_PRICE_ORACLE_MAX_PERCENT_CHANGE_PER_EPOCH] --average-block-gas-limit-per-epoch value average block gas limit per epoch (default: 1.1e+07) [$GAS_PRICE_ORACLE_AVERAGE_BLOCK_GAS_LIMIT_PER_EPOCH] --epoch-length-seconds value length of epochs in seconds (default: 10) [$GAS_PRICE_ORACLE_EPOCH_LENGTH_SECONDS] --significant-factor value only update when the gas price changes by more than this factor (default: 0.05) [$GAS_PRICE_ORACLE_SIGNIFICANT_FACTOR] --wait-for-receipt wait for receipts when sending transactions [$GAS_PRICE_ORACLE_WAIT_FOR_RECEIPT] --metrics Enable metrics collection and reporting [$GAS_PRICE_ORACLE_METRICS_ENABLE] --metrics.addr value Enable stand-alone metrics HTTP server listening interface (default: "127.0.0.1") [$GAS_PRICE_ORACLE_METRICS_HTTP] --metrics.port value Metrics HTTP server listening port (default: 6060) [$GAS_PRICE_ORACLE_METRICS_PORT] --metrics.influxdb Enable metrics export/push to an external InfluxDB database [$GAS_PRICE_ORACLE_METRICS_ENABLE_INFLUX_DB] --metrics.influxdb.endpoint value InfluxDB API endpoint to report metrics to (default: "http://localhost:8086") [$GAS_PRICE_ORACLE_METRICS_INFLUX_DB_ENDPOINT] --metrics.influxdb.database value InfluxDB database name to push reported metrics to (default: "gas-oracle") [$GAS_PRICE_ORACLE_METRICS_INFLUX_DB_DATABASE] --metrics.influxdb.username value Username to authorize access to the database (default: "test") [$GAS_PRICE_ORACLE_METRICS_INFLUX_DB_USERNAME] --metrics.influxdb.password value Password to authorize access to the database (default: "test") [$GAS_PRICE_ORACLE_METRICS_INFLUX_DB_PASSWORD] --help, -h show help --version, -v print the version ``` ### Testing the service The service can be tested with the `Makefile` ``` $ make test ``` # `eof-crawler` Simple CLI tool to scan all accounts in a geth LevelDB for contracts that begin with the EOF prefix. ## Usage 1. Pass the directory of the Geth DB into the tool ```sh go run ./cmd/eof-crawler/main.go --db-path <db_path> [--out <out_file>] ``` 2. Once the indexing has completed, an array of all EOF-prefixed contracts will be written to `eof_contracts.json` or the designated output file. # tools A collection of Bedrock ops tools. ## generate_replica.py This script generates a replica configuration suitable for use with a deployed Bedrock network. Given a network name and an output directory, it will: 1. Pull the network's genesis, rollup config, and contract addresses from GCP. 2. Generate P2P/JWT keys. 3. Generate a `docker-compose.yml` file that can be used to immediately start the replica. The above files are outputted to a user-defined output directory in case further customization is desired. The network must already have been deployed using `bedrock-regen`. **Prerequisites**: Python 3.7 or above. No `pip` or `venv` is necessary, since the script does not have any dependencies outside of the standard library. **Usage:** Run `python3 generate.py <options>` to invoke the script. `python3 generate.py -h` will output the usage help text below. All configuration options except for the following are optional: `--network`, `--l1-rpc`, and `--outdir`. **Example**: ``` python3 generate_replica.py --network <network-name> --op-node-tag 068113f255fa23edcd628ed853c6e5e616af7b77 --outdir ./replica-regenesis-447cda2 --l1-rpc <removed> ``` **CLI Helptext**: ``` generate.py [-h] --network NETWORK --l1-rpc L1_RPC --outdir OUTDIR [--geth-tag GETH_TAG] [--geth-http-port GETH_HTTP_PORT] [--geth-ws-port GETH_WS_PORT] [--op-node-tag OP_NODE_TAG] [--op-node-http-port OP_NODE_HTTP_PORT] [--op-node-metrics-port OP_NODE_METRICS_PORT] [--op-node-pprof-port OP_NODE_PPROF_PORT] [--bucket BUCKET] Configure an Optimism Bedrock replica using docker-compose. optional arguments: -h, --help show this help message and exit --network NETWORK name for the network to create a replica for --l1-rpc L1_RPC l1 RPC provider --outdir OUTDIR output directory for the replica config --geth-tag GETH_TAG docker tag to use with geth --geth-http-port GETH_HTTP_PORT geth http port --geth-ws-port GETH_WS_PORT geth ws port --op-node-tag OP_NODE_TAG docker tag to use with the rollup node --op-node-http-port OP_NODE_HTTP_PORT rollup node http port --op-node-metrics-port OP_NODE_METRICS_PORT rollup node http port --op-node-pprof-port OP_NODE_PPROF_PORT rollup node http port --bucket BUCKET GCP bucket to pull network data from ``` # Actor Tests [](https://codecov.io/gh/ethereum-optimism/optimism) This README describes how to use the actor testing library to write new tests. If you're just looking for how to run test cases, check out the README [in the root of the repo](../README.md). ## Introduction An "actor test" is a test case that simulates how a user might interact with Optimism. For example, an actor test might automate a user minting NFTs or swapping on Uniswap. Multiple actor tests are composed together in order to simulate real-world usage and help us optimize network performance under realistic load. Actor tests are designed to catch race conditions, resource leaks, and performance regressions. They aren't a replacement for standard unit/integration tests, and aren't executed on every pull request since they take time to run. This directory contains the actor testing framework as well as the tests themselves. The framework lives in `lib` and the tests live in this directory with `.test.ts` prefixes. Read on to find out more about how to use the framework to write actor tests of your own. ## CLI Use the following command to run actor tests from the CLI: ``` ts-node actor-tests/lib/runner.ts -f <path-to-test-file> -c <concurrency> -r <num-runs> -t <time-to-run> --think-time <think time?> ``` You can also run `ts-node actor-tests/lib/runner.ts --help` for a full list of options with documentation. **Arguments:** - `path-to-test-file`: A path to the TS file containing the actor test. - `concurrency`: How many workers to spawn. - `run-for`: How long, in milliseconds, the worker should run. - `think-time`: How long the runner should pause between test runs. Defaults to zero, meaning runs execute as fast as possible. ## Usage ### Test DSL Actor tests are defined using a Mocha-like DSL. Follow along using the example below: ```typescript import { actor, setupRun, setupActor, run } from './lib/convenience' interface Context { wallet: Wallet } actor('Value sender', () => { let env: OptimismEnv setupActor(async () => { env = await OptimismEnv.new() }) setupRun(async () => { const wallet = Wallet.createRandom() const tx = await env.l2Wallet.sendTransaction({ to: wallet.address, value: utils.parseEther('0.01'), }) await tx.wait() return { wallet: wallet.connect(env.l2Wallet.provider), } }) run(async (b, ctx: Context) => { const randWallet = Wallet.createRandom().connect(env.l2Wallet.provider) await b.bench('send funds', async () => { const tx = await ctx.wallet.sendTransaction({ to: randWallet.address, value: 0x42, }) await tx.wait() }) expect(await randWallet.getBalance()).to.deep.equal(BigNumber.from(0x42)) }) }) ``` #### `actor(name: string, cb: () => void)` Defines a new actor. **Arguments:** - `name`: Sets the actor's name. Used in logs and in outputted metrics. - `cb`: The body of the actor. Cannot be async. All the other DSL methods (i.e. `setup*`, `run`) must be called within this callback. #### `setupActor(cb: () => Promise<void>)` Defines a setup method that gets called after the actor is instantiated but before any workers are spawned. Useful to set variables that need to be shared across all worker instances. **Note:** Any variables set using `setupActor` must be thread-safe. Don't use `setupActor` to define a shared `Provider` instance, for example, since this will introduce nonce errors. Use `setupRun` to define a test context instead. #### `setupRun(cb: () => Promise<T>)` Defines a setup method that gets called inside each worker after it is instantiated but before any runs have executed. The value returned by the `setupRun` method becomes the worker's test context, which will be described in more detail below. **Note:** While `setupRun` is called once in each worker, invocations of the `setupRun` callback are executed serially. This makes `setupRun` useful for nonce-dependent setup tasks like funding worker wallets. #### `run<T>(cb: (b: Benchmarker, ctx: T) => Promise<void>)` Defines what the actor actually does. The test runner will execute the `run` method multiple times depending on its configuration. **Benchmarker** Sections of the `run` method can be benchmarked using the `Benchmarker` argument to the `run` callback. Use the `Benchmarker` like this: ```typescript b.bench('bench name', async () => { // benchmarked code here }) ``` A summary of the benchmark's runtime and a count of how many times it succeeded/failed across each worker will be recorded in the run's metrics. **Context** The value returned by `setupRun` will be passed into the `ctx` argument to the `run` callback. Use the test context for values that need to be local to a particular worker. In the example, we use it to pass around the worker's wallet. ### Error Handling Errors in setup methods cause the test process to crash. Errors in the `run` method are recorded in the test's metrics, and cause the run to be retried. The runtime of failed runs are not recorded. It's useful to use `expect`/`assert` to make sure that actors are executing properly. ### Test Runner The test runner is responsible for executing actor tests and managing their lifecycle. It can run in one of two modes: 1. Fixed run mode, which will execute the `run` method a fixed number of times. 2. Timed mode, which will will execute the `run` method as many times as possible until a period of time has elapsed. Test lifecycle is as follows: 1. The runner collects all the actors it needs to run. > Actors automatically register themselves with the default instance of the runner upon being `require()`d. 2. The runner executes each actor's `setupActor` method. 3. The runner spawns `n` workers. 4. The runner executes the `setupRun` method in each worker. The runner will wait for all `setupRun` methods to complete before continuing. 5. The runner executes the `run` method according to the mode described above. ## Metrics The test runner prints metrics about each run to `stdout` on exit. This output can then be piped into Prometheus for visualization in Grafana or similar tools. Example metrics output might looks like: ``` # HELP actor_successful_bench_runs_total Count of total successful bench runs. # TYPE actor_successful_bench_runs_total counter actor_successful_bench_runs_total{actor_name="value_sender",bench_name="send_funds",worker_id="0"} 20 actor_successful_bench_runs_total{actor_name="value_sender",bench_name="send_funds",worker_id="1"} 20 # HELP actor_failed_bench_runs_total Count of total failed bench runs. # TYPE actor_failed_bench_runs_total counter # HELP actor_step_durations_ms_summary Summary of successful bench durations. # TYPE actor_step_durations_ms_summary summary actor_step_durations_ms_summary{quantile="0.5",actor_name="value_sender",bench_name="send_funds"} 1278.0819790065289 actor_step_durations_ms_summary{quantile="0.9",actor_name="value_sender",bench_name="send_funds"} 1318.4640210270882 actor_step_durations_ms_summary{quantile="0.95",actor_name="value_sender",bench_name="send_funds"} 1329.5195834636688 actor_step_durations_ms_summary{quantile="0.99",actor_name="value_sender",bench_name="send_funds"} 1338.0024159550667 actor_step_durations_ms_summary_sum{actor_name="value_sender",bench_name="send_funds"} 51318.10741400719 actor_step_durations_ms_summary_count{actor_name="value_sender",bench_name="send_funds"} 40 # HELP actor_successful_actor_runs_total Count of total successful actor runs. # TYPE actor_successful_actor_runs_total counter actor_successful_actor_runs_total{actor_name="value_sender"} 40 # HELP actor_failed_actor_runs_total Count of total failed actor runs. # TYPE actor_failed_actor_runs_total counter ``` ethkey ====== ethkey is a simple command-line tool for working with Ethereum keyfiles. # Usage ### `ethkey generate` Generate a new keyfile. If you want to use an existing private key to use in the keyfile, it can be specified by setting `--privatekey` with the location of the file containing the private key. ### `ethkey inspect <keyfile>` Print various information about the keyfile. Private key information can be printed by using the `--private` flag; make sure to use this feature with great caution! ### `ethkey signmessage <keyfile> <message/file>` Sign the message with a keyfile. It is possible to refer to a file containing the message. To sign a message contained in a file, use the `--msgfile` flag. ### `ethkey verifymessage <address> <signature> <message/file>` Verify the signature of the message. It is possible to refer to a file containing the message. To sign a message contained in a file, use the --msgfile flag. ### `ethkey changepassword <keyfile>` Change the password of a keyfile. use the `--newpasswordfile` to point to the new password file. ## Passwords For every command that uses a keyfile, you will be prompted to provide the password for decrypting the keyfile. To avoid this message, it is possible to pass the password by using the `--passwordfile` flag pointing to a file that contains the password. ## JSON In case you need to output the result in a JSON format, you shall by using the `--json` flag. # op_exporter A prometheus exporter to collect information from an Optimism node and serve metrics for collection ## Usage ``` make build && ./op_exporter --rpc.provider="https://kovan-sequencer.optimism.io" --label.network="kovan" ``` ## Health endpoint `/health` Returns json describing the health of the sequencer based on the time since a block height update. ``` $ curl http://localhost:9100/health { "healthy": "false" } ``` ## Metrics endpoint `/metrics` ``` # HELP op_gasPrice Gas price. # TYPE op_gasPrice gauge op_gasPrice{layer="layer1",network="kovan"} 6.9e+09 op_gasPrice{layer="layer2",network="kovan"} 1 ``` ### EIP 712 tests These tests are json files which are converted into eip-712 typed data. All files are expected to be proper json, and tests will fail if they are not. Files that begin with `expfail' are expected to not pass the hashstruct construction. # op-replica infra Deployment examples and resources for running an Optimism replica. [./envs](./envs) contains working example environmenatal files to configure a replica for different networks. [./scripts](./scripts/) contains helper scripts to prepare or verify an environment. [./docker-compose](./docker-compose/) provides working docker-compose example deployments [./kustomize](./kustomize/) has kubernetes base overlays and network examples

near_rollup-data-availability

.github ISSUE_TEMPLATE bug_report.md feature_request.md workflows on_main.yml on_pull_request.yml .vscode bookmarks.json CHANGELOG.md Cargo.toml README.md bin cli Cargo.toml src main.rs http-api Cargo.toml src main.rs cliff.toml contracts blob-store Cargo.toml build.sh src lib.rs tests tests.rs crates da-rpc-sys Cargo.toml build.rs src lib.rs da-rpc Cargo.toml src lib.rs near config.rs mod.rs http-api-data Cargo.toml src lib.rs primitives Cargo.toml src lib.rs docker-compose.yml docs README.md da_rpc_client.md optimisim_containers.md system_context.md test.md eth .prettierrc.yml .solhint.json README.md foundry.toml package.json remappings.txt gopkg da-rpc README.md lib libnear_da_rpc_sys.h near.go near_darwin.go near_test.go near_unix.go sidecar near.go near_test.go http-config.template.json recipe.json rust-toolchain.toml scripts enrich.sh taplo.toml test genesis.json http-sidecar.json node_key.json validator_key.json

# NEAR Data Availability architecture docs For our architecture docs, we make use of [mermaid](https://mermaid.js.org/intro/). It's a simple and easy to use architecture-as-code software, with an online editor and various plugins. Gihub also supports this out of the box within mermaid code blocks. # go-near This library exposes a thin go module around `near-op-sys`. This enables DA capabilities with minimal intrusion. If this is your first time with Foundry, check out the [installation](https://github.com/foundry-rs/foundry#installation) instructions. ## Features This template builds upon the frameworks and libraries mentioned above, so please consult their respective documentation for details about their specific features. For example, if you're interested in exploring Foundry in more detail, you should look at the [Foundry Book](https://book.getfoundry.sh/). In particular, you may be interested in reading the [Writing Tests](https://book.getfoundry.sh/forge/writing-tests.html) tutorial. ### Sensible Defaults This template comes with a set of sensible default configurations for you to use. These defaults can be found in the following files: ```text ├── .editorconfig ├── .gitignore ├── .prettierignore ├── .prettierrc.yml ├── .solhint.json ├── foundry.toml └── remappings.txt ``` ### VSCode Integration This template is IDE agnostic, but for the best user experience, you may want to use it in VSCode alongside Nomic Foundation's [Solidity extension](https://marketplace.visualstudio.com/items?itemName=NomicFoundation.hardhat-solidity). For guidance on how to integrate a Foundry project in VSCode, please refer to this [guide](https://book.getfoundry.sh/config/vscode). ### GitHub Actions This template comes with GitHub Actions pre-configured. Your contracts will be linted and tested on every push and pull request made to the `main` branch. You can edit the CI script in [.github/workflows/ci.yml](./.github/workflows/ci.yml). ## Installing Dependencies Foundry typically uses git submodules to manage dependencies, but this template uses Node.js packages because [submodules don't scale](https://twitter.com/PaulRBerg/status/1736695487057531328). This is how to install dependencies: 1. Install the dependency using your preferred package manager, e.g. `bun install dependency-name` - Use this syntax to install from GitHub: `bun install github:username/repo-name` 2. Add a remapping for the dependency in [remappings.txt](./remappings.txt), e.g. `dependency-name=node_modules/dependency-name` Note that OpenZeppelin Contracts is pre-installed, so you can follow that as an example. ## Writing Tests To write a new test contract, you start by importing [PRBTest](https://github.com/PaulRBerg/prb-test) and inherit from it in your test contract. PRBTest comes with a pre-instantiated [cheatcodes](https://book.getfoundry.sh/cheatcodes/) environment accessible via the `vm` property. If you would like to view the logs in the terminal output you can add the `-vvv` flag and use [console.log](https://book.getfoundry.sh/faq?highlight=console.log#how-do-i-use-consolelog). This template comes with an example test contract [Foo.t.sol](./test/Foo.t.sol) ## Usage This is a list of the most frequently needed commands. ### Build Build the contracts: ```sh $ forge build ``` ### Clean Delete the build artifacts and cache directories: ```sh $ forge clean ``` ### Compile Compile the contracts: ```sh $ forge build ``` ### Coverage Get a test coverage report: ```sh $ forge coverage ``` ### Deploy Deploy to Anvil: ```sh $ forge script script/Deploy.s.sol --broadcast --fork-url http://localhost:8545 ``` For this script to work, you need to have a `MNEMONIC` environment variable set to a valid [BIP39 mnemonic](https://iancoleman.io/bip39/). For instructions on how to deploy to a testnet or mainnet, check out the [Solidity Scripting](https://book.getfoundry.sh/tutorials/solidity-scripting.html) tutorial. ### Format Format the contracts: ```sh $ forge fmt ``` ### Gas Usage Get a gas report: ```sh $ forge test --gas-report ``` ### Lint Lint the contracts: ```sh $ bun run lint ``` ### Test Run the tests: ```sh $ forge test ``` Generate test coverage and output result to the terminal: ```sh $ bun run test:coverage ``` Generate test coverage with lcov report (you'll have to open the `./coverage/index.html` file in your browser, to do so simply copy paste the path): ```sh $ bun run test:coverage:report ``` ## Related Efforts - [abigger87/femplate](https://github.com/abigger87/femplate) - [cleanunicorn/ethereum-smartcontract-template](https://github.com/cleanunicorn/ethereum-smartcontract-template) - [foundry-rs/forge-template](https://github.com/foundry-rs/forge-template) - [FrankieIsLost/forge-template](https://github.com/FrankieIsLost/forge-template) ## License This project is licensed under MIT. # Rollup Data Availability <!-- [](https://github.com/near/rollup-data-availability/actions/workflows/on_pull_request.yml) --> <!-- [](https://github.com/near/rollup-data-availability/actions/workflows/on_main.yml) --> Utilising NEAR as storage data availability with a focus on lowering rollup DA fees. ## Components Herein outlines the components of the project and their purposes. ### Blob store contract This contract provides the store for arbitrary DA blobs. In practice, these "blobs" are sequencing data from rollups, but they can be any data. NEAR blockchain state storage is pretty cheap. At the time of writing, 100KiB is a flat fee of 1NEAR. To limit the costs of NEAR storage even more, we don't store the blob data in the blockchain state. It works by taking advantage of NEAR consensus around receipts. When a chunk producer processes a receipt, there is consensus around the receipt. However, once the chunk has been processed and included in the block, the receipt is no longer required for consensus and can be pruned. The pruning time is at least 3 NEAR epochs, where each epoch is 12 Hours; in practice, this is around five epochs. Once the receipt has been pruned, it is the responsibility of archival nodes to retain the transaction data, and we can even get the data from indexers. We can validate that the blob was retrieved from ecosystem actors in the format submitted by checking the blob commitment. The blob commitment currently needs to be more efficient and will be improved, but it benefits us because anybody can build this with limited expertise and tooling. It is created by taking a blob, chunking it into 256-byte pieces, and creating a Merkle tree, where each leaf is a Sha-256 hash of the shard. The root of the Merkle tree is the blob commitment, which is provided as `[transaction_id ++ commitment]` to the L1 contract, which is 64 bytes. What this means: - consensus is provided around the submission of a blob by NEAR validators - the function input data is stored by full nodes for at least three days - archival nodes can store the data for longer - we don't occupy consensus with more data than needs to be - indexers can also be used, and this Data is currently indexed by all significant explorers in NEAR - the commitment is available for a long time, and the commitment is straightforward to create ### Light client A trustless off-chain light client for NEAR with DA-enabled features, Such as KZG commitments, Reed-Solomon erasure coding & storage connectors. The light client provides easy access to transaction and receipt inclusion proofs within a block or chunk. This is useful for checking any dubious blobs which may not have been submitted or validating that a blob has been submitted to NEAR. A blob submission can be verified by: - taking the NEAR transaction ID from Ethereum for the blob commitment. - Ask the light client for an inclusion proof for the transaction ID or the receipt ID if you're feeling specific; this will give you a Merkle inclusion proof for the transaction/receipt. - once you have the inclusion proof, you can ask the light client to verify the proof for you, or advanced users can manually verify it themselves. - armed with this knowledge, rollup providers can have advanced integration with light clients and build proving systems around it. In the future, we will provide extensions to light clients such that non-interactive proofs can be supplied for blob commitments and other data availability features. It's also possible that the light client may be on-chain for the header syncing and inclusion proof verification, but this is a low priority right now. TODO: write and draw up extensions to the light client and draw an architecture diagram ### DA RPC Client This client is the defacto client for submitting blobs to NEAR. These crates allow a client to interact with the blob store. It can be treated as a "black box", where blobs go in, and `[transaction_id ++ commitment]` emerges. The `da-rpc` crate is the rust client, which anyone can use if they prefer rust in their application. The responsibility of this client is to provide a simple interface for interacting with NEAR DA. The `da-rpc-sys` crate is the FFI client binding for use by non-rust applications. This calls through to `da-rpc` to interact with the blob store, with some additional black box functionality for dealing with pointers wrangling and such. The `da-rpc-go` crate is the go client bindings for use by non-rust applications, and this calls through to `da-rpc-sys`, which provides another application-level layer for easy interaction with the bindings. ## Integrations We have some proof of concept works for integrating with other rollups. We are working to prove the system's capabilities and provide a reference implementation for others to follow. They are being actively developed, so they are in a state of flux. We know that each rollup has different features and capabilities, even if they are built on the same SDK. The reference implementations are not necessarily "production grade", they serve as inspiration to help integrators make use of NEAR DA in their system. Our ultimate goal is to make NEAR DA as pluggable as any other tool you might use. This means our heavy focus is on proving, submission and making storage as fair as possible. Architecture Diagrams can be viewed at [this directory](./docs/) ### OP Stack https://github.com/near/optimism We have integrated with the Optimism OP stack. Utilising the `Batcher` for submissions to NEAR and the `proposer` for submitting NEAR commitment data to Ethereum. ### CDK Stack # TODO: move this https://github.com/firatNEAR/cdk-validium-node/tree/near We have integrated with the Polygon CDK stack. Utilising the Sequence Sender for submissions to NEAR. ### Arbitrum Nitro https://github.com/near/nitro We have integrated a small plugin into the DAC `daserver`. This is much like our http sidecar and provides a very modular integration into NEAR DA whilst supporting arbitrum DACs. In the future, this will likely be the easiest way to support NEAR DA as it acts as an independent sidecar which can be scaled as needed. This also means that the DAC can opt-in and out of NEAR DA, lowering their infrastructure burden. With this approach, the DAC committee members just need to have a "dumb" signing service, with the store backed by NEAR. ### 👷🚧 Intregrating your own rollup 🚧👷 The aim of NEAR DA is to be as modular as possible. If implementing your own rollup, it should be fairly straightforward, assuming you can utilise `da-rpc` or `da-rpc-go`(with some complexity here). All the implementations so far have been different, but the general rules have been: - find where the sequencer normally posts batch data, for optimism it was the `batcher`, for CDK it's the `Sequence Sender` and plug the client in. - find where the sequencer needs commitments posted, for optimism it was the `proposer`, and CDK the `synchronizer`. Hook the blob reads from the commitment there. The complexity arises, depending on how pluggable the commitment data is in the contracts. If you can simply add a field, great! But these waters are unchartered mostly. If your rollup does anything additional, feel free to hack, and we can try reach the goal of NEAR DA being as modular as possible. ## Getting started Makefiles are floating around, but here's a rundown of how to start with NEAR DA. **Prerequisites** Rust, go, cmake & friends should be installed. Please look at `flake.nix#nativeBuildInputs` for a list of required installation items. If you use Nix, you're in luck! Just do `direnv allow`, and you're good to go. [Ensure you have setup](https://docs.near.org/tools/near-cli-rs) `near-cli`. For the Makefiles to work correctly, you need to have the `near-cli-rs` version of NEAR-CLI. Make sure you setup some keys for your contract, the documentation above should help. You can write these down, or query these from `~/.near-credentials/**` later. If you didn't clone with submodules, sync them: `make submodules` Note, there are some semantic differences between `near-cli-rs` and `near-cli-js`. Notably, the keys generated with `near-cli-js` used to have and `account_id` key in the json object. But this is omitted in `near-cli-rs` becuse it's already in the filename, but some applications require this object. So you may need to add it back in. ### If using your own contract If you're using your own contract, you have to build the contract yourself. And make sure you set the keys. To build the contract: `make build-contracts` The contract will now be in `./target/wasm32-unknown-unknown/release/near_da_blob_store.wasm`. Now to deploy, once you've decided where you want to deploy to, and have permissions to deploy it. Set `$NEAR_CONTRACT` to the address you want to deploy to, and sign with. For advanced users, take a look at the command and adjust as fit. Next up: `make deploy-contracts` Don't forget to update your `.env` file for `DA_KEY`, `DA_CONTRACT` and `DA_ACCOUNT` for use later. ### If deploying optimism First clone the [repository](https://github.com/near/optimism) Configure `./ops-bedrock/.env.example`. This just needs copying the without `.example` suffix, adding the keys, contract address and signer from your NEAR wallet, and should work out of the box for you. #### If deploying optimism on arm64 To standardize the builds for da-rpc-sys and genesis, you can use a docker image. `da-rpc-sys-unix` This will copy the contents of `da-rpc-sys-docker` generated libraries to the `gopkg/da-rpc` folder. `op-devnet-genesis-docker` This will create a docker image to generate the genesis files `op-devnet-genesis` This will generate the genesis files in a docker container and push the files in `.devnet` folder. `make op-devnet-up` This should build the docker images and deploy a local devnet for you Once up, observe the logs `make op-devnet-da-logs` You should see `got data from NEAR` and `submitting to NEAR` Of course, to stop `make op-devnet-down` If you just wanna get up and running and have already built the docker images using something like `make bedrock images`, there is a `docker-compose-testnet.yml` in `ops-bedrock` you can play with. ### If deploying polygon CDK First clone the [repository](https://github.com/firatNEAR/cdk-validium-node) Now we have to pull the docker image containing the contracts. `make cdk-images` **_why is this different to op-stack_**? When building the contracts in `cdk-validium-contracts`, it does a little bit more than build contracts. It creates a local eth devnet, deploys the various components (CDKValidiumDeployer & friends). Then it generates genesis and posts it to L1 at some arbitrary block. The block number that the L2 genesis gets posted to is **non-deterministic**. This block is then fed into the `genesis` config in `cdk-validium-node/tests`. Because of this reason, we want an out of the box deployment, so using a pre-built docker image for this is incredibly convenient. It's fairly reasonable that, when scanning for the original genesis, we can just query a bunch of blocks between 0..N for the genesis data. However, this feature doesn't exist yet. Once the image is downloaded, or advanced users built the image and modified the genesis config for tests, we need to configure an env file again. The envfile example is at `./cdk-stack/cdk-validium-node/.env.example`, and should be updated with the respective variables as above. Now we can just do: `cdk-devnet-up` This wil spawn the devnet and an explorer for each network at `localhost:4000`(L1) and localhost:4001`(L2). Run a transaction, and check out your contract on NEAR, verify the commitment with the last 64 bytes of the transaction made to L1. You'll get some logs that look like: ``` time="2023-10-03T15:16:21Z" level=info msg="Submitting to NEARmaybeFrameData{0x7ff5b804adf0 64}candidate0xfF00000000000000000000000000000000000000namespace{0 99999}txLen1118" 2023-10-03T15:16:21.583Z WARN sequencesender/sequencesender.go:129 to 0x0DCd1Bf9A1b36cE34237eEaFef220932846BCD82, data: 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 {"pid": 7, "version": ""} github.com/0xPolygon/cdk-validium-node/sequencesender.(*SequenceSender).tryToSendSequence /src/sequencesender/sequencesender.go:129 github.com/0xPolygon/cdk-validium-node/sequencesender.(*SequenceSender).Start /src/sequencesender/sequencesender.go:69 2023-10-03T15:16:21.584Z DEBUG etherman/etherman.go:1136 Estimating gas for tx. From: 0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266, To: 0x0DCd1Bf9A1b36cE34237eEaFef220932846BCD82, Value: <nil>, Data: 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 {"pid": 7, "version": ""} 2023-10-03T15:16:21.586Z DEBUG ethtxmanager/ethtxmanager.go:89 Applying gasOffset: 80000. Final Gas: 246755, Owner: sequencer {"pid": 7, "version": ""} 2023-10-03T15:16:21.587Z DEBUG etherman/etherman.go:1111 gasPrice chose: 8 {"pid": 7, "version": ""} ``` For this transaction, the blob commitment was `7f5aa2475d57f8a5b2b3d3368ee8760cffeb72b11783779a86abb83ac09c8d59` And if I check the CDKValidium contract `0x0dcd1bf9a1b36ce34237eeafef220932846bcd82`, the root was at the end of the calldata. `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` ### If deploying arbitrum nitro Build daserver/datool: `make target/bin/daserver && make target/bin/datool` Deploy your DA contract as above Update daserver config to introduce new configuration fields: "near-aggregator": { "enable": true, "key": "ed25519:insert_here", "account": "helloworld.testnet", "contract": "your_deployed_da_contract.testnet", "storage": { "enable": true, "data-dir": "config/near-storage" } }, `target/bin/datool client rpc store --url http://localhost:7876 --message "Hello world" --signing-key config/daserverkeys/ecdsa` Take the hash, check the output: `target/bin/datool client rest getbyhash --url http://localhost:7877 --data-hash 0xea7c19deb86746af7e65c131e5040dbd5dcce8ecb3ca326ca467752e72915185`

johnnykramer_usdm-prices

abis USDM3CRV.json package-lock.json package.json src price.ts

p2pvid_sdfkd

.eslintrc.yml .github workflows deploy.yml .gitpod.yml .travis.yml README-Gitpod.md README.md as-pect.config.js asconfig.json assembly __tests__ as-pect.d.ts guestbook.spec.ts as_types.d.ts main.ts model.ts tsconfig.json babel.config.js neardev shared-test-staging test.near.json shared-test test.near.json package.json src App.js config.js index.html index.js tests integration App-integration.test.js ui App-ui.test.js

Guest Book ========== [](https://travis-ci.com/near-examples/guest-book) [](https://gitpod.io/#https://github.com/near-examples/guest-book) <!-- MAGIC COMMENT: DO NOT DELETE! Everything above this line is hidden on NEAR Examples page --> Sign in with [NEAR] and add a message to the guest book! A starter app built with an [AssemblyScript] backend and a [React] frontend. Quick Start =========== To run this project locally: 1. Prerequisites: Make sure you have Node.js ≥ 12 installed (https://nodejs.org), then use it to install [yarn]: `npm install --global yarn` (or just `npm i -g yarn`) 2. Install dependencies: `yarn install` (or just `yarn`) 3. Run the local development server: `yarn dev` (see `package.json` for a full list of `scripts` you can run with `yarn`) Now you'll have a local development environment backed by the NEAR TestNet! Running `yarn dev` will tell you the URL you can visit in your browser to see the app. Exploring The Code ================== 1. The backend code lives in the `/assembly` folder. This code gets deployed to the NEAR blockchain when you run `yarn deploy:contract`. This sort of code-that-runs-on-a-blockchain is called a "smart contract" – [learn more about NEAR smart contracts][smart contract docs]. 2. The frontend code lives in the `/src` folder. [/src/index.html](/src/index.html) is a great place to start exploring. Note that it loads in `/src/index.js`, where you can learn how the frontend connects to the NEAR blockchain. 3. Tests: there are different kinds of tests for the frontend and backend. The backend code gets tested with the [asp] command for running the backend AssemblyScript tests, and [jest] for running frontend tests. You can run both of these at once with `yarn test`. Both contract and client-side code will auto-reload as you change source files. Deploy ====== Every smart contract in NEAR has its [own associated account][NEAR accounts]. When you run `yarn dev`, your smart contracts get deployed to the live NEAR TestNet with a throwaway account. When you're ready to make it permanent, here's how. Step 0: Install near-cli -------------------------- You need near-cli installed globally. Here's how: npm install --global near-cli This will give you the `near` [CLI] tool. Ensure that it's installed with: near --version Step 1: Create an account for the contract ------------------------------------------ Visit [NEAR Wallet] and make a new account. You'll be deploying these smart contracts to this new account. Now authorize NEAR CLI for this new account, and follow the instructions it gives you: near login Step 2: set contract name in code --------------------------------- Modify the line in `src/config.js` that sets the account name of the contract. Set it to the account id you used above. const CONTRACT_NAME = process.env.CONTRACT_NAME || 'your-account-here!' Step 3: change remote URL if you cloned this repo ------------------------- Unless you forked this repository you will need to change the remote URL to a repo that you have commit access to. This will allow auto deployment to Github Pages from the command line. 1) go to GitHub and create a new repository for this project 2) open your terminal and in the root of this project enter the following: $ `git remote set-url origin https://github.com/YOUR_USERNAME/YOUR_REPOSITORY.git` Step 4: deploy! --------------- One command: yarn deploy As you can see in `package.json`, this does two things: 1. builds & deploys smart contracts to NEAR TestNet 2. builds & deploys frontend code to GitHub using [gh-pages]. This will only work if the project already has a repository set up on GitHub. Feel free to modify the `deploy` script in `package.json` to deploy elsewhere. [NEAR]: https://nearprotocol.com/ [yarn]: https://yarnpkg.com/ [AssemblyScript]: https://docs.assemblyscript.org/ [React]: https://reactjs.org [smart contract docs]: https://docs.nearprotocol.com/docs/roles/developer/contracts/assemblyscript [asp]: https://www.npmjs.com/package/@as-pect/cli [jest]: https://jestjs.io/ [NEAR accounts]: https://docs.nearprotocol.com/docs/concepts/account [NEAR Wallet]: https://wallet.nearprotocol.com [near-cli]: https://github.com/nearprotocol/near-cli [CLI]: https://www.w3schools.com/whatis/whatis_cli.asp [create-near-app]: https://github.com/nearprotocol/create-near-app [gh-pages]: https://github.com/tschaub/gh-pages

nearwatch_postcards

Cargo.toml README.md card.svg index.html lib.rs

<a href="https://pcards.near.page" target="_blank">pcards.near.page</a>, <a href="https://pcards.testnet.page" target="_blank">pcards.testnet.page</a><br /> ## Introduction Near Postcards dApp is an example of a fully decentralized Near protocol service that stores all data directly on the blockchain itself, including design templates and web interface. Also, the service is an example of integrating any application into an official wallet through the Collectibles tab. Just open a postcard image in a new browser tab and you will be redirected to the project page. In this way, you can significantly improve the usability of your application. ### Usage The service provides the ability to send NFT images simulating paper postcards with a postage stamp with the flag of the country of origin, postal seals and stamps. The sender can write a short text (200 characters) which will be displayed on the NFT postcard. Open <a href="https://pcards.near.page" target="_blank">pcards.near.page</a>, log in and fill out the form to send a postcard. After successful sending, you will be redirected to the page with postcards of the receiver. <img src="https://telegra.ph/file/1dee2c369f02a4a6761c3.png" /> ### Video https://youtu.be/jYkiEB18GeY ### Build ``` $ cargo build --target wasm32-unknown-unknown --release $ copy target\wasm32-unknown-unknown\release\near_postcards.wasm main.wasm ``` ### Deploy ``` $ near deploy --wasmFile main.wasm --accountId account.near ``` ### Support <a href="https://t.me/nearwatch">Near.Watch technical support group (telegram)</a>

NEAR-Analytics_BOS_UnOfficial_Guide

Overview customBuild.md detail.md readme.md README.md assets imgs BOS Diagram-Page-5.drawio.svg

# BOS_UnOfficial_Guide This is an unofficial and rough guide on how to build on the blockchain operating system > The Blockchain Operating System (BOS) allows you to quicky develop fullstack decentralized applications by publishing all of its source code on-chain. --- # Unofficial Guide to Building on the Blockchain Operating System (BOS) with NEAR Protocol This tutorial will guide you through understanding the essential components of the Blockchain Operating System (BOS) built by the NEAR Protocol team. By walking through the different components and concepts, we aim to provide a clear understanding of how to develop applications within this unique paradigm. ## Contents 1. Understanding the Main Parts 1. - [Headover to Overview for Details:](./Overview/detail.md) 2. Introducing the Chain 3. The Role of Components 4. Exploring Gateways and VMs 5. Utilizing Tools 6. Customizing Gateways and VMs 7. Deploying App Fully On BOS

evgenykuzyakov_ad-token

contract Cargo.toml add_ad.sh build.sh meta.sh send.sh src lib.rs storage.rs token.rs

michaelshapkin_near-dice-deploy

README.md babel.config.js contract Cargo.toml README.md build.sh compile.js src lib.rs tests test_utils.rs copy-dev-account.js jest.config.js package.json src __mocks__ fileMock.js assets logo-black.svg logo-white.svg config.js global.css jest.init.js main.js main.test.js utils.js wallet login index.html tests unit Notification.spec.js SignedIn.spec.js SignedOut.spec.js

NCD-GroupA-Demo Smart Contract ================== A demo contract for NCD Pojrect Phase-1. Play with this contract ======================== the contract is deployed at testnet with the name `dev-1614240595058-5266655` you can set it to env for later use: ```shell export CONTRACTID=dev-1614240595058-5266655 ``` ## Look around ```shell # return playground info near view $CONTRACTID get_contract_info '' # return winner tip rate near view $CONTRACTID get_reward_fee_fraction '' # return win history list near view $CONTRACTID get_win_history '{"from_index": 0, "limit": 100}' # return dice count that alice has near view $CONTRACTID get_account_dice_count '{"account_id": "alice.testnet"}' ``` ## Let's play ```shell # attached 3 Near to buy 3 dices near call $CONTRACTID buy_dice '' --amount=3 --account_id=alice.testnet #check user's dice, would return 3 here near view $CONTRACTID get_account_dice_count '{"account_id": "alice.testnet"}' # roll dice 3 times, say how luck you are near call $CONTRACTID roll_dice '{"target": 1}' --account_id=alice.testnet near call $CONTRACTID roll_dice '{"target": 3}' --account_id=alice.testnet near call $CONTRACTID roll_dice '{"target": 4}' --account_id=alice.testnet ``` Build Deploy and Init ====================== Before you compile this code, you will need to install Rust with [correct target] ```shell # building it srouce ./build.sh ``` ```shell # dev-deploy or deploy it near dev-deploy res/neardice.wasm # say it was deploy at $CONTRACTID, then init it near call $CONTRACTID new \ '{"owner_id": "boss.testnet", "dice_number": 1, "rolling_fee": "1000000000000000000000000", "reward_fee_fraction": {"numerator": 5, "denominator": 100}}' \ --account_id=$CONTRACTID ``` ```shell # last step to open the playgroud is # to deposit to the jackpod the very first time near call $CONTRACTID deposit_jackpod '' --amount=50 --account_id=boss.testnet ``` Exploring The Code ================== 1. The main smart contract code lives in `src/lib.rs`. You can compile it with the `./compile` script. 2. Tests: You can run smart contract tests with the `./test` script. This runs standard Rust tests using [cargo] with a `--nocapture` flag so that you can see any debug info you print to the console. [smart contract]: https://docs.near.org/docs/roles/developer/contracts/intro [Rust]: https://www.rust-lang.org/ [create-near-app]: https://github.com/near/create-near-app [correct target]: https://github.com/near/near-sdk-rs#pre-requisites [cargo]: https://doc.rust-lang.org/book/ch01-03-hello-cargo.html NCD-GroupA-Demo ================== This is a homework demo project for NCD program phase-1. Rolling Dice On NEAR ==================== Guys, let's roll dice on NEAR. ## Why dice Randomness is always a key focus on any blockchain. We wanna show you how convenient that a random number can get on NEAR blockchain. To achieve that, it is hard to believe there is a better way than to make a dice dapp. Beyond what you can see in this demo, NEAR can even generate independent randomness not per block, but per receipt! ## How to play On home page, user can see the whole status of playground without login, i.e. an NEAR account is not necessary. He would have full imformation about owner account of this contract, dice price, commission fee rate, the size of current jackpod and etc. Then, user can login with NEAR account and buy several dices. With dices bought, he can guess a number and roll dice again and again. If the dice point is equal to his guess, half of jackpod would belong to him. Otherwise the amount he paid for the dice would belong to the jackpod. During playing, the latest 20 win records would appear and be auto refreshed on screen too. About Contract ==================== It's need to be mentioned that it is a pure dapp project, which means there is no centralized backend nor data server, all persistent information is stored and mananged on NEAR chain by a contract. ## Contract Structure ```rust /// This structure describe a winning event #[derive(BorshDeserialize, BorshSerialize)] pub struct WinnerInfo { pub user: AccountId, // winner accountId pub amount: Balance, // how much he got as win reward pub height: BlockHeight, // the block hight this event happened pub ts: u64, // the timestamp this event happened } /// main structure of this contract #[near_bindgen] #[derive(BorshDeserialize, BorshSerialize)] pub struct NearDice { pub owner_id: AccountId, // owner can adjust params of this playground pub dice_number: u8, // how many dices one rolling event uses pub rolling_fee: Balance, // how much a dice costs when user buys it pub jack_pod: Balance, // as name shows and half of it would belong to the winner pub owner_pod: Balance, // winner would share a tip to the playground, this is where those tips go pub reward_fee_fraction: RewardFeeFraction, // a fraction defines tip rate // an always grow vector records all win event, // as a demo, we ignore the management of its size, // but in real project, it must be taken care of, // maybe has a maximum length and remove the oldest item when exceeds. pub win_history: Vector<WinnerInfo>, // records dice user bought by his payment amount. // This map has a mechanism to shrink, // when a user's balance is reduce to zero, the entry would be removed. pub accounts: LookupMap<AccountId, Balance>, } ``` ## Contract Interface ```rust /// winner's tip rate pub struct RewardFeeFraction { pub numerator: u32, pub denominator: u32, } /// a human readable version for win event struct, used in return value to caller pub struct HumanReadableWinnerInfo { pub user: AccountId, // winner accountId pub amount: U128, // the reward he got pub height: U64, // block height the event happens pub ts: U64, // timestamp the event happens } /// status of this playground, as return value of get_contract_info pub struct HumanReadableContractInfo { pub owner: AccountId, // who runs this playground, if you feel bad, just sue him :) pub jack_pod: U128, // you know what it means pub owner_pod: U128, // winner's tip goes to here, owner can withdraw pub dice_number: u8, // how many dice we use in one rolling event pub rolling_fee: U128, // how much a dice costs when user wanna buy it } /// every roll_dice event would return this info pub struct HumanReadableDiceResult { pub user: AccountId, // who rolls pub user_guess: u8, // the number he guess pub dice_point: u8, // the number dice shows pub reward_amount: U128, // reward he got pub jackpod_left: U128, // jackpod after this event pub height: U64, // the block height when he rolls pub ts: U64, // the timestamp when he rolls } //****************/ //***** INIT *****/ //****************/ /// initialization of this contract #[init] pub fn new( owner_id: AccountId, dice_number: u8, rolling_fee: U128, reward_fee_fraction: RewardFeeFraction, ) -> Self; //***************************/ //***** OWNER FUNCTIONS *****/ //***************************/ /// deposit to jackpod, used for initalizing the very first jackpod, /// otherwise, the jackpod is initialized as 0. #[payable] pub fn deposit_jackpod(&mut self); /// withdraw ownerpod to owner's account pub fn withdraw_ownerpod(&mut self, amount: U128); /// Updates current reward fee fraction to the new given fraction. pub fn update_reward_fee_fraction(&mut self, reward_fee_fraction: RewardFeeFraction); /// Updates current dice number used in one rolling event. pub fn update_dice_number(&mut self, dice_number: u8); /// Updates current dice price. pub fn update_rolling_fee(&mut self, rolling_fee: U128); //**************************/ //***** USER FUNCTIONS *****/ //**************************/ /// user deposit near to buy dice. /// he can buy multiple dices, /// any leftover amount would refund /// eg: rolling_fee is 1 Near, he can buy_dice with 4.4 Near and got 4 dices and 0.4 Near refund. #[payable] pub fn buy_dice(&mut self); /// user roll dice once, then his available dice count would reduce by one. pub fn roll_dice(&mut self, target: u8) -> HumanReadableDiceResult; //**************************/ //***** VIEW FUNCTIONS *****/ //**************************/ /// get a list of winn events in LIFO order /// best practise is set from_index to 0, and limit to 20, /// that means to get latest 20 win events information with latest first order. pub fn get_win_history(&self, from_index: u64, limit: u64) -> Vec<HumanReadableWinnerInfo>; /// get current playground status pub fn get_contract_info(&self) -> HumanReadableContractInfo; /// get current winner tip rate pub fn get_reward_fee_fraction(&self) -> RewardFeeFraction; /// get account's available dice count pub fn get_account_dice_count(&self, account_id: String) -> u8; ``` Quick Start =========== To run this project locally: 1. Prerequisites: Make sure you've installed [Node.js] ≥ 12 2. Install dependencies: `yarn install` 3. Run the local development server: `yarn dev` (see `package.json` for a full list of `scripts` you can run with `yarn`) Now you'll have a local development environment backed by the NEAR TestNet! Go ahead and play with the app and the code. As you make code changes, the app will automatically reload. Exploring The Code ================== 1. The "backend" code lives in the `/contract` folder. See the README there for more info. 2. The frontend code lives in the `/src` folder. `/src/main.js` is a great place to start exploring. 3. Tests: there are different kinds of tests for the frontend and the smart contract. See `contract/README` for info about how it's tested. The frontend code gets tested with [jest]. You can run both of these at once with `yarn run test`. Deploy ====== Every smart contract in NEAR has its [own associated account][NEAR accounts]. When you run `yarn dev`, your smart contract gets deployed to the live NEAR TestNet with a throwaway account. When you're ready to make it permanent, here's how. Step 0: Install near-cli (optional) ------------------------------------- [near-cli] is a command line interface (CLI) for interacting with the NEAR blockchain. It was installed to the local `node_modules` folder when you ran `yarn install`, but for best ergonomics you may want to install it globally: yarn install --global near-cli Or, if you'd rather use the locally-installed version, you can prefix all `near` commands with `npx` Ensure that it's installed with `near --version` (or `npx near --version`) Step 1: Create an account for the contract ------------------------------------------ Each account on NEAR can have at most one contract deployed to it. If you've already created an account such as `your-name.testnet`, you can deploy your contract to `NCD-GroupA-Demo.your-name.testnet`. Assuming you've already created an account on [NEAR Wallet], here's how to create `NCD-GroupA-Demo.your-name.testnet`: 1. Authorize NEAR CLI, following the commands it gives you: near login 2. Create a subaccount (replace `YOUR-NAME` below with your actual account name): near create-account NCD-GroupA-Demo.YOUR-NAME.testnet --masterAccount YOUR-NAME.testnet Step 2: set contract name in code --------------------------------- Modify the line in `src/config.js` that sets the account name of the contract. Set it to the account id you used above. const CONTRACT_NAME = process.env.CONTRACT_NAME || 'NCD-GroupA-Demo.YOUR-NAME.testnet' Step 3: deploy! --------------- One command: yarn deploy As you can see in `package.json`, this does two things: 1. builds & deploys smart contract to NEAR TestNet 2. builds & deploys frontend code to GitHub using [gh-pages]. This will only work if the project already has a repository set up on GitHub. Feel free to modify the `deploy` script in `package.json` to deploy elsewhere. Troubleshooting =============== On Windows, if you're seeing an error containing `EPERM` it may be related to spaces in your path. Please see [this issue](https://github.com/zkat/npx/issues/209) for more details. [Vue]: https://vuejs.org/ [create-near-app]: https://github.com/near/create-near-app [Node.js]: https://nodejs.org/en/download/package-manager/ [jest]: https://jestjs.io/ [NEAR accounts]: https://docs.near.org/docs/concepts/account [NEAR Wallet]: https://wallet.testnet.near.org/ [near-cli]: https://github.com/near/near-cli [gh-pages]: https://github.com/tschaub/gh-pages

ifabrisarabellapark_sc-near-mintingNFT

README.md nft-contract Cargo.toml build.sh src approval.rs enumeration.rs events.rs internal.rs lib.rs metadata.rs mint.rs nft_core.rs royalty.rs package.json

<p align="center"> <a href="https://near.org/"> <img alt="Near" src="https://github.com/irene-bbox/sc-near-mintingNFT/blob/main/images/near_oceanblue.png" width="900" /> </a> </p> # Minting an NFT on NEAR Protocol :ringed_planet: :roller_skate: :kick_scooter: In this guide, you'll learn how to mint an NFT on NEAR Protocol blockchain (testnet) via a Rust Smart Contract. This guide walks you through all steps to quickly deploy the contract, yet the guide doesn't explain the actual logic of the NFT-minting contract :nerd_face: :shipit: :bowtie:, if you want to learn how to write a smart contract or mint NFTs on near, then follow [this](https://docs.near.org/tutorials/nfts/introduction) tutorial in the official NEAR documentation. --- ## Create testnet account If you don't own a NEAR wallet yet, create one. Navigate to NEAR testnet [wallet](https://wallet.testnet.near.org) and click on 'Create Account'. ## Configure CLI ```bash npm install -g near-cli # Install the NEAR CLI near # To see various possible commands run near login # Log into your NEAR testnet wallet near keys <youraccountname>.testnet # Visualize your keys running ``` ## Set up Rust ```bash curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh # If you haven't installed Rust yet, install it now using rustup rustup target add wasm32-unknown-unknown # Add Wasm toolchain ``` Some -but not all- Smart Contracts (e.g., SCRT Network, NEAR Protocol, etc.) compile to WebAssembly (Wasm) <br /> and that's why we add the toolchain for Rust :sheep:. ###### Version Management Over time you'll need to manage rust versions. Notice that often your rustup toolchain manager and your rust compiler run on different versions and this is totally fine. Check the official [rust-lang](https://github.com/rust-lang/rust/blob/master/RELEASES.md) Git repo for new releases. Lastly, keep your toolchain and compilers up to date: ```bash #check for current version rustup --version rustc --version cargo --version #update to the newest version rustup update #install a specific rust version rustup install 1.63.0 #target a specific version of Rust rustup override set 1.63.0 ``` ## Prep smart contract This guide assumes you already have a ready-to-deploy smart contract. If you haven't, download from the official NEAR GitHub repo found [here](https://github.com/near-examples/nft-tutorial) a full-fledged smart contract to mint NFTs. Notice that this Repo has many branches. Each branch corresponds to the incremental spet in the smart contract development. Refer to the last branch if you want the most complete version of the contract. ## Login Near wallet To log into your Near wallet (testnet account), run in terminal the command below and follow the pop-up prompts ```bash near login ``` ## Deploy Follow these 3 steps to deploy a Smart Contract on NEAR: 1. :gear: **build** the contract 2. :clapper: **deploy** the contract 3. :airplane: **initialize** the contract Run in terminal, ```bash export NFT_CONTRACT_ID=accountname.testnet # Export path to your testnet account name echo $NFT_CONTRACT_ID yarn build # Build the contract # now, ensure you are in the root folder and run near deploy --wasmFile out/main.wasm $NFT_CONTRACT_ID # Deploy the contract near call $NFT_CONTRACT_ID new_default_meta '{"owner_id": "'$NFT_CONTRACT_ID'"}' --accountId $NFT_CONTRACT_ID # Initialize the contract near call $NFT_CONTRACT_ID nft_mint '{"token_id": "nft1", "metadata": {"title": "May 4th", "description": "Star Wars pun", "media": "https://www.rd.com/wp-content/uploads/2020/04/GettyImages-1146900170.jpg"}, "receiver_id": "'$NFT_CONTRACT_ID'"}' --accountId $NFT_CONTRACT_ID --amount 0.1 # Mint the NFT near view $NFT_CONTRACT_ID nft_metadata # Call view functions ``` Congratulations :raised_hands: :tada: :partying_face: ! You've just minted an NFT on NEAR testnet. <br /> > * `accountname.testnet` is the name of your NEAR testnet account <br /> > * `NFT_CONTRACT_ID` is a path to a self-defined variable, i.e., your testnet account <br /> > * fields like `token_id`, `title`, `description`, etc. are customizable ## Redeploy (patch fixes) Imagine you have an already-deployed smart contract. Assume you want to upgrade/change/add functionalities to such contract by altering its Rust code. The correct way to do so is by using *deployment patch fixes* (see official doc [here](https://docs.near.org/tutorials/nfts/upgrade-contract)), namely code patches to a contract that had been previously deployed. To upgrade a contract follow the next steps: * change the current code to add the desired functionality * run in terminal from the root directory ```bash yarn build && near deploy --wasmFile out/main.wasm --accountId $NFT_CONTRACT_ID ``` * this outputs a warning and will ask if you'd like to proceed. Simply type `y` and hit enter * once the contract is redeployed, test that the state migrated correctly by running a simple a *view* function of your choice, e.g., `near view $NFT_CONTRACT_ID <my_function_name>` > :no_entry: :radioactive: :warning: Patch fixes on NEAR require you to run the *yarn build && near deploy* commands **simultaneously**. If you try to execute these commands *consecutively* the operation will fail because the initial contract had already been deployed and the NEAR Runtime doesn't understand what to do with this contradictory request to deploy an already-deployed contract. ## Interact You're ready to interact with the smart contract. Use view calls to return viewing data from the smart contract. ```bash near view $NFT_CONTRACT_ID json_token '{"token_id": "nft1"}' # View call ```

phuonghoang713_BotAutoTransferMoney

.gitpod.yml README.md contract Cargo.toml README.md compile.js src lib.rs package.json src assets logo-black.svg logo-white.svg config.js global.css index.html index.js main.test.js utils.js wallet login index.html

BotAutoTransferMoney ================== This app was initialized with [create-near-app] Quick Start =========== To run this project locally: 1. Prerequisites: Make sure you've installed [Node.js] ≥ 12 2. Install dependencies: `yarn install` 3. Run the local development server: `yarn dev` (see `package.json` for a full list of `scripts` you can run with `yarn`) Now you'll have a local development environment backed by the NEAR TestNet! Go ahead and play with the app and the code. As you make code changes, the app will automatically reload. Exploring The Code ================== 1. The "backend" code lives in the `/contract` folder. See the README there for more info. 2. The frontend code lives in the `/src` folder. `/src/index.html` is a great place to start exploring. Note that it loads in `/src/index.js`, where you can learn how the frontend connects to the NEAR blockchain. 3. Tests: there are different kinds of tests for the frontend and the smart contract. See `contract/README` for info about how it's tested. The frontend code gets tested with [jest]. You can run both of these at once with `yarn run test`. Deploy ====== Every smart contract in NEAR has its [own associated account][NEAR accounts]. When you run `yarn dev`, your smart contract gets deployed to the live NEAR TestNet with a throwaway account. When you're ready to make it permanent, here's how. Step 0: Install near-cli (optional) ------------------------------------- [near-cli] is a command line interface (CLI) for interacting with the NEAR blockchain. It was installed to the local `node_modules` folder when you ran `yarn install`, but for best ergonomics you may want to install it globally: yarn install --global near-cli Or, if you'd rather use the locally-installed version, you can prefix all `near` commands with `npx` Ensure that it's installed with `near --version` (or `npx near --version`) Step 1: Create an account for the contract ------------------------------------------ Each account on NEAR can have at most one contract deployed to it. If you've already created an account such as `your-name.testnet`, you can deploy your contract to `BotAutoTransferMoney.your-name.testnet`. Assuming you've already created an account on [NEAR Wallet], here's how to create `BotAutoTransferMoney.your-name.testnet`: 1. Authorize NEAR CLI, following the commands it gives you: near login 2. Create a subaccount (replace `YOUR-NAME` below with your actual account name): near create-account BotAutoTransferMoney.YOUR-NAME.testnet --masterAccount YOUR-NAME.testnet Step 2: set contract name in code --------------------------------- Modify the line in `src/config.js` that sets the account name of the contract. Set it to the account id you used above. const CONTRACT_NAME = process.env.CONTRACT_NAME || 'BotAutoTransferMoney.YOUR-NAME.testnet' Step 3: deploy! --------------- One command: yarn deploy As you can see in `package.json`, this does two things: 1. builds & deploys smart contract to NEAR TestNet 2. builds & deploys frontend code to GitHub using [gh-pages]. This will only work if the project already has a repository set up on GitHub. Feel free to modify the `deploy` script in `package.json` to deploy elsewhere. Troubleshooting =============== On Windows, if you're seeing an error containing `EPERM` it may be related to spaces in your path. Please see [this issue](https://github.com/zkat/npx/issues/209) for more details. [create-near-app]: https://github.com/near/create-near-app [Node.js]: https://nodejs.org/en/download/package-manager/ [jest]: https://jestjs.io/ [NEAR accounts]: https://docs.near.org/docs/concepts/account [NEAR Wallet]: https://wallet.testnet.near.org/ [near-cli]: https://github.com/near/near-cli [gh-pages]: https://github.com/tschaub/gh-pages # BotAutoTransferMoney BotAutoTransferMoney Smart Contract ================== A [smart contract] written in [Rust] for an app initialized with [create-near-app] Quick Start =========== Before you compile this code, you will need to install Rust with [correct target] Exploring The Code ================== 1. The main smart contract code lives in `src/lib.rs`. You can compile it with the `./compile` script. 2. Tests: You can run smart contract tests with the `./test` script. This runs standard Rust tests using [cargo] with a `--nocapture` flag so that you can see any debug info you print to the console. [smart contract]: https://docs.near.org/docs/develop/contracts/overview [Rust]: https://www.rust-lang.org/ [create-near-app]: https://github.com/near/create-near-app [correct target]: https://github.com/near/near-sdk-rs#pre-requisites [cargo]: https://doc.rust-lang.org/book/ch01-03-hello-cargo.html

pagoda-gallery-repos_temp

.github ISSUE_TEMPLATE 01_BUG_REPORT.md 02_FEATURE_REQUEST.md 03_CODEBASE_IMPROVEMENT.md 04_SUPPORT_QUESTION.md config.yml PULL_REQUEST_TEMPLATE.md labels.yml workflows build.yml deploy-to-console.yml labels.yml lock.yml pr-labels.yml stale.yml README.md contract Cargo.toml README.md build.sh deploy.sh src lib.rs docs CODE_OF_CONDUCT.md CONTRIBUTING.md SECURITY.md frontend .eslintrc.json .prettierrc.json hooks wallet-selector.ts next.config.js package-lock.json package.json pages api hello.ts postcss.config.js public next.svg thirteen.svg vercel.svg start.sh styles globals.css tailwind.config.js tsconfig.json integration-tests Cargo.toml src tests.rs package-lock.json package.json

<h1 align="center"> <a href="https://github.com/near/boilerplate-template-rs"> <picture> <source media="(prefers-color-scheme: dark)" srcset="https://raw.githubusercontent.com/near/boilerplate-template-rs/main/docs/images/pagoda_logo_light.png"> <source media="(prefers-color-scheme: light)" srcset="https://raw.githubusercontent.com/near/boilerplate-template-rs/main/docs/images/pagoda_logo_dark.png"> <img alt="" src="https://raw.githubusercontent.com/near/boilerplate-template-rs/main/docs/images/pagoda_logo_dark.png"> </picture> </a> </h1> <div align="center"> Rust Boilerplate Template <br /> <br /> <a href="https://github.com/near/boilerplate-template-rs/issues/new?assignees=&labels=bug&template=01_BUG_REPORT.md&title=bug%3A+">Report a Bug</a> · <a href="https://github.com/near/boilerplate-template-rs/issues/new?assignees=&labels=enhancement&template=02_FEATURE_REQUEST.md&title=feat%3A+">Request a Feature</a> . <a href="https://github.com/near/boilerplate-template-rs/issues/new?assignees=&labels=question&template=04_SUPPORT_QUESTION.md&title=support%3A+">Ask a Question</a> </div> <div align="center"> <br /> [](https://github.com/near/boilerplate-template-rs/issues?q=is%3Aissue+is%3Aopen+label%3A%22help+wanted%22) [](https://github.com/near) </div> <details open="open"> <summary>Table of Contents</summary> - [About](#about) - [Built With](#built-with) - [Getting Started](#getting-started) - [Prerequisites](#prerequisites) - [Installation](#installation) - [Usage](#usage) - [Deploy on Vercel](#deploy-on-vercel) - [Roadmap](#roadmap) - [Support](#support) - [Project assistance](#project-assistance) - [Contributing](#contributing) - [Authors & contributors](#authors--contributors) - [Security](#security) </details> --- ## About This is a [Next.js](https://nextjs.org/) project bootstrapped with [`create-next-app`](https://github.com/vercel/next.js/tree/canary/packages/create-next-app) and [`tailwindcss`](https://tailwindcss.com/docs/guides/nextjs) created for easy-to-start as a React + Rust skeleton template in the Pagoda Gallery. Smart-contract was initialized with [create-near-app]. Use this template and start to build your own gallery project! ### Built With [`create-next-app`](https://github.com/vercel/next.js/tree/canary/packages/create-next-app), [`tailwindcss`](https://tailwindcss.com/docs/guides/nextjs), [`tailwindui`](https://tailwindui.com/), [`@headlessui/react`](https://headlessui.com/), [`@heroicons/react`](https://heroicons.com/), [create-near-app], [`amazing-github-template`](https://github.com/dec0dOS/amazing-github-template) Getting Started ================== ### Prerequisites Make sure you have a [current version of Node.js](https://nodejs.org/en/about/releases/) installed – we are targeting versions `18>`. Read about other [prerequisites](https://docs.near.org/develop/prerequisites) in our docs. ### Installation Install all dependencies: npm install Build your contract: npm run build Deploy your contract to TestNet with a temporary dev account: npm run deploy Usage ===== Start your frontend: npm run start Open [http://localhost:3000](http://localhost:3000) with your browser to see the result. Test your contract: npm run test Exploring The Code ================== 1. The smart-contract code lives in the `/contract` folder. See the README there for more info. In blockchain apps the smart contract is the "backend" of your app. 2. The frontend code lives in the `/frontend` folder. You can start editing the page by modifying `frontend/pages/index.tsx`. The page auto-updates as you edit the file. This is your entrypoint to learn how the frontend connects to the NEAR blockchain. 3. Test your contract: `npm test`, this will run the tests in `integration-tests` directory. 4. [API routes](https://nextjs.org/docs/api-routes/introduction) can be accessed on [http://localhost:3000/api/hello](http://localhost:3000/api/hello). This endpoint can be edited in `frontend/pages/api/hello.ts`. 5. The `frontend/pages/api` directory is mapped to `/api/*`. Files in this directory are treated as [API routes](https://nextjs.org/docs/api-routes/introduction) instead of React pages. 6. This project uses [`next/font`](https://nextjs.org/docs/basic-features/font-optimization) to automatically optimize and load Inter, a custom Google Font. Deploy ====== Every smart contract in NEAR has its [own associated account][NEAR accounts]. When you run `npm run deploy`, your smart contract gets deployed to the live NEAR TestNet with a temporary dev account. When you're ready to make it permanent, here's how: Step 0: Install near-cli (optional) ------------------------------------- [near-cli] is a command line interface (CLI) for interacting with the NEAR blockchain. It was installed to the local `node_modules` folder when you ran `npm install`, but for best ergonomics you may want to install it globally: npm install --global near-cli Or, if you'd rather use the locally-installed version, you can prefix all `near` commands with `npx` Ensure that it's installed with `near --version` (or `npx near --version`) Step 1: Create an account for the contract ------------------------------------------ Each account on NEAR can have at most one contract deployed to it. If you've already created an account such as `your-name.testnet`, you can deploy your contract to `near-blank-project.your-name.testnet`. Assuming you've already created an account on [NEAR Wallet], here's how to create `near-blank-project.your-name.testnet`: 1. Authorize NEAR CLI, following the commands it gives you: near login 2. Create a subaccount (replace `YOUR-NAME` below with your actual account name): near create-account near-blank-project.YOUR-NAME.testnet --masterAccount YOUR-NAME.testnet Step 2: deploy the contract --------------------------- Use the CLI to deploy the contract to TestNet with your account ID. Replace `PATH_TO_WASM_FILE` with the `wasm` that was generated in `contract` build directory. near deploy --accountId near-blank-project.YOUR-NAME.testnet --wasmFile PATH_TO_WASM_FILE Step 3: set contract name in your frontend code ----------------------------------------------- Modify the line in `contract/neardev/dev-account.env` that sets the account name of the contract. Set it to the account id you used above. CONTRACT_NAME=near-blank-project.YOUR-NAME.testnet Troubleshooting =============== On Windows, if you're seeing an error containing `EPERM` it may be related to spaces in your path. Please see [this issue](https://github.com/zkat/npx/issues/209) for more details. [create-next-app]: https://github.com/vercel/next.js/tree/canary/packages/create-next-app [Node.js]: https://nodejs.org/en/download/package-manager [tailwindcss]: https://tailwindcss.com/docs/guides/nextjs [create-near-app]: https://github.com/near/create-near-app [jest]: https://jestjs.io/ [NEAR accounts]: https://docs.near.org/concepts/basics/account [NEAR Wallet]: https://wallet.testnet.near.org/ [near-cli]: https://github.com/near/near-cli You can check out [the Next.js GitHub repository](https://github.com/vercel/next.js/) - your feedback and contributions are welcome! ## Deploy on Vercel The easiest way to deploy your Next.js app is to use the [Vercel Platform](https://vercel.com/new?utm_medium=default-template&filter=next.js&utm_source=create-next-app&utm_campaign=create-next-app-readme) from the creators of Next.js. Check out our [Next.js deployment documentation](https://nextjs.org/docs/deployment) for more details. ## Roadmap See the [open issues](https://github.com/near/boilerplate-template-rs/issues) for a list of proposed features (and known issues). - [Top Feature Requests](https://github.com/near/boilerplate-template-rs/issues?q=label%3Aenhancement+is%3Aopen+sort%3Areactions-%2B1-desc) (Add your votes using the 👍 reaction) - [Top Bugs](https://github.com/near/boilerplate-template-rs/issues?q=is%3Aissue+is%3Aopen+label%3Abug+sort%3Areactions-%2B1-desc) (Add your votes using the 👍 reaction) - [Newest Bugs](https://github.com/near/boilerplate-template-rs/issues?q=is%3Aopen+is%3Aissue+label%3Abug) ## Support Reach out to the maintainer: - [GitHub issues](https://github.com/near/boilerplate-template-rs/issues/new?assignees=&labels=question&template=04_SUPPORT_QUESTION.md&title=support%3A+) ## Project assistance If you want to say **thank you** or/and support active development of Rust Boilerplate Template: - Add a [GitHub Star](https://github.com/near/boilerplate-template-rs) to the project. - Tweet about the Rust Boilerplate Template. - Write interesting articles about the project on [Dev.to](https://dev.to/), [Medium](https://medium.com/) or your personal blog. Together, we can make Rust Boilerplate Template **better**! ## Contributing First off, thanks for taking the time to contribute! Contributions are what make the open-source community such an amazing place to learn, inspire, and create. Any contributions you make will benefit everybody else and are **greatly appreciated**. Please read [our contribution guidelines](docs/CONTRIBUTING.md), and thank you for being involved! ## Authors & contributors The original setup of this repository is by [Dmitriy Sheleg](https://github.com/shelegdmitriy). For a full list of all authors and contributors, see [the contributors page](https://github.com/near/boilerplate-template-rs/contributors). ## Security Rust Boilerplate Template follows good practices of security, but 100% security cannot be assured. Rust Boilerplate Template is provided **"as is"** without any **warranty**. Use at your own risk. _For more information and to report security issues, please refer to our [security documentation](docs/SECURITY.md)._ # Hello NEAR Contract The smart contract exposes two methods to enable storing and retrieving a greeting in the NEAR network. ```rust const DEFAULT_GREETING: &str = "Hello"; #[near_bindgen] #[derive(BorshDeserialize, BorshSerialize)] pub struct Contract { greeting: String, } impl Default for Contract { fn default() -> Self { Self{greeting: DEFAULT_GREETING.to_string()} } } #[near_bindgen] impl Contract { // Public: Returns the stored greeting, defaulting to 'Hello' pub fn get_greeting(&self) -> String { return self.greeting.clone(); } // Public: Takes a greeting, such as 'howdy', and records it pub fn set_greeting(&mut self, greeting: String) { // Record a log permanently to the blockchain! log!("Saving greeting {}", greeting); self.greeting = greeting; } } ``` <br /> # Quickstart 1. Make sure you have installed [rust](https://rust.org/). 2. Install the [`NEAR CLI`](https://github.com/near/near-cli#setup) <br /> ## 1. Build and Deploy the Contract You can automatically compile and deploy the contract in the NEAR testnet by running: ```bash ./deploy.sh ``` Once finished, check the `neardev/dev-account` file to find the address in which the contract was deployed: ```bash cat ./neardev/dev-account # e.g. dev-1659899566943-21539992274727 ``` <br /> ## 2. Retrieve the Greeting `get_greeting` is a read-only method (aka `view` method). `View` methods can be called for **free** by anyone, even people **without a NEAR account**! ```bash # Use near-cli to get the greeting near view <dev-account> get_greeting ``` <br /> ## 3. Store a New Greeting `set_greeting` changes the contract's state, for which it is a `change` method. `Change` methods can only be invoked using a NEAR account, since the account needs to pay GAS for the transaction. ```bash # Use near-cli to set a new greeting near call <dev-account> set_greeting '{"message":"howdy"}' --accountId <dev-account> ``` **Tip:** If you would like to call `set_greeting` using your own account, first login into NEAR using: ```bash # Use near-cli to login your NEAR account near login ``` and then use the logged account to sign the transaction: `--accountId <your-account>`.

lhtkamleshkulkrni_Task-Creator_Rust-Smart-Contract

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wee_alloc-b109b8206de3730d build-script-build-script-build.json wasm32-unknown-unknown release .fingerprint ahash-053ee982ea576fa2 run-build-script-build-script-build.json ahash-d257bc90b213a1a4 lib-ahash.json base64-6998116a7dcb83c1 lib-base64.json borsh-81c6cc3d4206befe lib-borsh.json bs58-6604fbdc96c06d27 lib-bs58.json byteorder-99f5b66d6a1db1d4 lib-byteorder.json cfg-if-4ca2b295e9614f97 lib-cfg-if.json crunchy-d7f980d381089223 run-build-script-build-script-build.json crunchy-e4cd843bd799bdcb lib-crunchy.json greeter-d5cbb7d1e1b2873c lib-greeter.json hashbrown-b04f36f987e9ea51 lib-hashbrown.json hex-f27d7c3e22e85d28 lib-hex.json itoa-e49bd9614fc2d291 lib-itoa.json memory_units-cfdb43266b7e98fa lib-memory_units.json near-sdk-24f9965a11bb198a lib-near-sdk.json near-sys-ca566f8da38677d6 lib-near-sys.json once_cell-6aa79599c8503d3b lib-once_cell.json ryu-0c2bf78aac0be487 lib-ryu.json serde-251e0c5c8d9aa1ab lib-serde.json serde-90ca8f41fe071b43 run-build-script-build-script-build.json 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near-blank-project Smart Contract ================== A [smart contract] written in [Rust] for an app initialized with [create-near-app] Quick Start =========== Before you compile this code, you will need to install Rust with [correct target] Exploring The Code ================== 1. The main smart contract code lives in `src/lib.rs`. 2. Tests: You can run smart contract tests with the `./test` script. This runs standard Rust tests using [cargo] with a `--nocapture` flag so that you can see any debug info you print to the console. [smart contract]: https://docs.near.org/docs/develop/contracts/overview [Rust]: https://www.rust-lang.org/ [create-near-app]: https://github.com/near/create-near-app [correct target]: https://github.com/near/near-sdk-rs#pre-requisites [cargo]: https://doc.rust-lang.org/book/ch01-03-hello-cargo.html # Near Task Creator - Near Task Creator is a NEAR blockchain based dApp which which includes creation of Task for users - This Near Task Creator dApp it consists of a Smart Contract and it is witten in Rust. - Ultimately, the purpose of this project was to build a simple contract to explore how contract calls interact when building on the NEAR ecosystem. ### Functionality #### This Near Task Creator includes following functionality : - Manager login with Near Wallet - Manager create task for users - Task Dashboard - User get the Task Allocated message in their Near wallet - User get account-ID, Task Heading, Task Description in message - Logout ### Smart Contracts Used In Project #### Change Method ```bash addTasks ``` #### Send Method ```bash Task_Allocated ``` #### View Method ```bash getTasks ``` ```bash // Change Method pub fn addTasks(&mut self, assigne: String, taskNumber: String, Description: String, Task_heading: String) { log!("Adding New Task"); let account_id = env::signer_account_id(); let contains_user = self.memo.contains_key(&account_id); if contains_user { let mut temp_list = match self.memo.get(&account_id) { Some(x) => x, None => vec![], }; temp_list.push( taskNumber + " ___ Assignee : " + &assigne + " ___ Task Heading : " + &Task_heading + " ___ Description : " + &Description); self.memo.insert(&account_id, &temp_list); } else { let fresh_vec = vec![taskNumber + " ___ Assignee : " + &assigne + " ___ Task Heading : " + &Task_heading + " ___ Description : " + &Description]; self.memo.insert(&account_id, &fresh_vec); } } // send Task pub fn Task_Allocated(&mut self, account_id: AccountId, taskNumber: f64, Taskheading: String, Description: String,) { Promise::new(account_id).transfer(taskNumber as u128); } // View Methods pub fn getTasks(self, user: AccountId) -> Vec<String> { match self.memo.get(&user) { Some(x) => x, None => vec![], ``` ### Quick Start #### To run this project locally: - Prerequisites: Make sure you've installed [Node.js] ≥ 12 - Clone this repository - Go to the project folder - Install dependencies: `yarn install` - Run the local development server: `yarn dev` (see `package.json` for a full list of `scripts` you can run with `yarn`) Now you'll have a local development environment backed by the NEAR TestNet! Go ahead and play with the app and the code. As you make code changes, the app will automatically reload. ### Exploring The Code - The "backend" code lives in the `/contract` folder. - The frontend code lives in the `/frontend` folder. `/frontend/index.html` is a great place to start exploring. Note that it loads in `/frontend/assets/js/index.js`, where you can connects frontend to the NEAR blockchain. - Tests: there are different kinds of tests for the frontend and the smart contract. See `contract/README` for info about how it's tested. The frontend code gets tested with [jest]. You can run both of these at once with `yarn run test`. ### Installation - Every smart contract in NEAR has its [own associated account][near accounts]. When you run `yarn dev`, your smart contract gets deployed to the live NEAR TestNet with a throwaway account. When you're ready to make it permanent, here's how. ### Step 1: Install near-cli (optional) [near-cli] is a command line interface (CLI) for interacting with the NEAR blockchain. It was installed to the local `node_modules` folder when you ran `yarn install`, but for best ergonomics you may want to install it globally: yarn install --global near-cli Or, if you'd rather use the locally-installed version, you can prefix all `near` commands with `npx` Ensure that it's installed with `near --version` (or `npx near --version`) ### Step 2: Create an account for the contract Each account on NEAR can have at most one contract deployed to it. If you've already created an account such as `your-name.testnet`, you can deploy your contract to `near-blank-project.your-name.testnet`. Assuming you've already created an account on [NEAR Wallet], here's how to create `near-blank-project.your-name.testnet`: - Authorize NEAR CLI, following the commands it gives you: ```bash near login ``` - Create a subaccount (replace `YOUR-NAME` below with your actual account name): ```bash near create-account near-blank-project.YOUR-NAME.testnet --masterAccount YOUR-NAME.testnet ```

metaseed-project_factory-instruction

README.md

### Create Game contract ``` ContractId=registry4.metaseed.testnet GD=game_creator1.testnet GAME_NAME=my_game_name near call $ContractId create_game_manager '{"prefix": "'$GAME_NAME'"}' --accountId $GD --depositYocto 5789980000000000000000000 --gas 300000000000000 ``` ### Create an NFT ``` NFT_PREFIX=super_sword_collection near call $GAME_NAME.$ContractId create_ingame_nft '{"prefix": "'$NFT_PREFIX'"}' --accountId $GD --depositYocto 5189980000000000000000000 --gas 300000000000000 ``` ### Check data ``` near view $GAME_NAME.$ContractId get_asset '{"account_id": "'$NFT_PREFIX.$GAME_NAME.$ContractId'"}' --accountId $GD ``` ### Mint Specific sword ``` Receiver=phoneiostest.testnet echo $NFT_PREFIX.$GAME_NAME.$ContractId near call $NFT_PREFIX.$GAME_NAME.$ContractId nft_mint '{"token_id": "2", "receiver_id": "'$Receiver'", "token_metadata": { "title": "sword1", "description": "Super rare sword", "media": "https://bafkreifeih3hr6g5e3alrngb3rsrkvb7wwspibwreu6wagwwfietbboa6u.ipfs.dweb.link", "copies": 1}}' --accountId $GD --deposit 0.1 ```

Learn-NEAR-Hispano_NCD2L1--habitar-near-blockchain

README.md as-pect.config.js asconfig.json assembly __tests__ as-pect.d.ts index.spec.ts index.ts models.ts tsconfig.json package-lock.json package.json

Introducción a Habitar ================== Habitar es un contrato inteligente que permite verificar la identidad de los dueños de propiedades inmuebles. Debido a que la tecnología blockchain permite validar esa propiedad para que no sea posible una falsificación de documentos de propiedad o una alteración anormal del valor del inmueble. las funcionalidades principales del contrato son: 1. Crear una propiedad (inmueble) 2. Obtener el propietaerio del inmueble 3. Eliminar dicha propiedad 4. Comprar la propiedad 5. Crear propiedades para arrendar 6. Arrendar una propiedad 👨‍💻 Instalación en local =========== Para correr este proyecto en local debes seguir los siguientes pasos: Paso 1: Pre - Requisitos ------------------------------ 1. Asegúrese de haber instalado [Node.js] ≥ 12 ((recomendamos usar [nvm]) 2. Asegúrese de haber instalado yarn: `npm install -g yarn` 3. Instalar dependencias: `yarn install` 4. Crear un test near account [NEAR test account] 5. Instalar el NEAR CLI globally: [near-cli] es una interfaz de linea de comando (CLI) para interacturar con NEAR blockchain yarn install --global near-cli Step 2: Configura tu NEAR CLI ------------------------------- Configura tu near-cli para autorizar su cuenta de prueba creada recientemente: near login Step 3: Clonar Repositorio ------------------------------- Este comando nos permite clonar el repositorio de nuestro proyecto ```bash https://github.com/EdwardsVO/habitar-near-blockchain.git ``` Step 4: Realiza el BUILD para implementación de desarrollo de contrato inteligente ------------------------------------------------------------------------------------ Instale el gestor de dependencia de Node.js dentro del repositorio ```bash npm install ``` Cree el código de contrato inteligente e implemente el servidor de desarrollo local: ```bash yarn deploy:dev ``` Consulte` package.json` para obtener una lista completa de `scripts` que puede ejecutar con` yarn`). Este script le devuelve un contrato inteligente provisional implementado (guárdelo para usarlo más tarde) ¡Felicitaciones, ahora tendrá un entorno de desarrollo local ejecutándose en NEAR TestNet! ✏️ Explorando los métodos del contrato inteligente -------------------------------------------- los siguientes comandos permiten ejecutar el contrato y realizar cambios en él: Para Linux : comando para crear una propiedad ```bash near call <your deployed contract> createHouse '{"price": number, "description": string, "location": string, "rooms": number, "toilets": number, "size": number}' --account-id <username>.testnet --deposit amount ``` comando para crear una propiedad para alquiler ```bash near call <your deployed contract> createHouse '{"initialCost":number, "price": number, "description": string, "location": string, "rooms": number, "toilets": number, "size": number}' --account-id <username>.testnet --deposit amount ``` comando para obtener la cantidad de casas registradas ```bash near call <your deployed contract> getHouses --account-id <username>.testnet ``` comando para obtener el listado de casas registradas ```bash near call <your deployed contract> getNumHouses --account-id <username>.testnet ``` comando para obtener la cantidad de casas registradas destinadas al alquiler ```bash near call <your deployed contract> getNumHousesRent --account-id <username>.testnet ``` comando para obtener el listado de casas registradas destinadas al alquiler ```bash near call <your deployed contract> getHousesRent --account-id <username>.testnet ``` 🤖 Test ================== Las pruebas son parte del desarrollo, luego, para ejecutar las pruebas en el contrato inteligente , debe ejecutar el siguiente comando: yarn test Puedes visualizar una aproximación al diseño visual de la aplicación mediante :https://drive.google.com/file/d/1qqLefP4RpZrzsf6rmLukzSBbc6D3Nky0/view?usp=sharing ============================================== [create-near-app]: https://github.com/near/create-near-app [Node.js]: https://nodejs.org/en/download/package-manager/ [NEAR accounts]: https://docs.near.org/docs/concepts/account [NEAR Wallet]: https://wallet.testnet.near.org/ [near-cli]: https://github.com/near/near-cli [NEAR test account]: https://docs.near.org/docs/develop/basics/create-account#creating-a-testnet-account

near_as-base64

.github ISSUE_TEMPLATE BOUNTY.yml .travis.yml README.md as-pect.config.js assembly __tests__ as-pect.d.ts roundtrip.spec.ts index.ts tsconfig.json package.json

# as-base64 Base64 encoder / decoder for AssemblyScript. Adapted from https://gist.github.com/Juszczak/63e6d9e01decc850de03 # Usage ```ts import { encode, decode } from "as-base64"; const input = "c29tZSBzdHJpbmc="; assert(input = enocde(decode(input)); ```